Disclosure of Invention
The invention aims to solve the technical problem of providing a headspace mechanism for a soil VOCs processor, which has a simple structure and can extract the headspace at two ends of a sampling bottle, and the soil VOCs processor.
The invention relates to a headspace mechanism for a soil VOCs treatment instrument, which comprises a sampling bottle, wherein the headspace mechanism is used for performing headspace operation on the sampling bottle, the sampling bottle comprises a bottle body and a group of end head assemblies respectively arranged at two ends of the bottle body,
The device is characterized in that the head space mechanism is parallel to the ground and comprises two groups of head space needle assemblies capable of moving relatively/oppositely, each group of head space needle assemblies comprises a head space needle, when a sampling bottle flows from the last procedure to the head space mechanism, the two groups of head space needle assemblies are respectively positioned at two sides of the sampling bottle, after the head space operation is started, the two groups of head space needle assemblies can move relatively, so that the two head space needles can enter the sampling bottle to carry out head space at the same time, and after the head space operation is completed, when the head space needle assemblies move oppositely to a certain position, the sampling bottle can drop from the head space mechanism.
The invention discloses a head space mechanism for a soil VOCs treatment instrument, wherein one side, close to a bottle body, of each end head assembly is provided with an organic filter membrane, one end, far away from the bottle body, of each end head assembly is provided with a sealing membrane, each end head assembly comprises an end head seat, an end head sleeve and an end head clamping sleeve, one end of each end head seat is sleeved at the end part of the bottle body, the end head sleeve is sleeved at the other end part of the end head seat, the organic filter membrane is arranged at a position, close to the end part of the bottle body, of the end head seat, the end head sleeve is positioned at one side, far away from the bottle body, of the organic filter membrane, the other end part of the end head seat is covered by the sealing membrane, and a through hole is formed in the end head clamping sleeve, so that the sealing membrane is partially exposed.
The invention discloses a headspace mechanism for a soil VOCs treatment instrument, which also comprises a headspace power component, a second adjusting screw rod connected with the headspace power component and a headspace heating component, wherein the headspace heating component is arranged at a circulation position corresponding to a sampling bottle in the last procedure, the sampling bottle flows onto the headspace heating component after oscillation operation is completed, and two groups of headspace needle components are sleeved on the second adjusting screw rod and synchronously move with the second adjusting screw rod to realize relative/opposite movement of the two groups of headspace needle components.
The invention relates to a headspace mechanism for a soil VOCs processor, wherein after the headspace operation of a sampling bottle on the headspace mechanism is completed, two groups of headspace needle assemblies are moved to a certain position in opposite directions, the sampling bottle can fall off from a headspace heating assembly,
When the sampling bottle flows to the headspace heating assembly, and the two groups of headspace needle assemblies move relatively to perform headspace operation on the sampling bottle, a second limiting device for preventing the sampling bottle from falling is arranged on each group of headspace needle heating assemblies.
According to the headspace mechanism for the soil VOCs treatment instrument, the headspace heating assembly is a penetrating body, so that after the headspace operation is finished, the two groups of headspace needle assemblies move back to a certain position, and the sampling bottle can fall off after passing through the headspace heating assembly.
The headspace heating assembly comprises two heating blocks and two supporting plates, wherein the two heating blocks are oppositely arranged, the two supporting plates are connected with the two heating blocks, a body is communicated with the surrounding areas of the two supporting plates, and the headspace needle can pass through the supporting plates to perform headspace operation on the sampling bottle.
The invention discloses a headspace mechanism for a soil VOCs treatment instrument, wherein the headspace mechanism further comprises a headspace bracket arranged on one side of a headspace heating assembly, the headspace bracket is used for supporting the headspace heating assembly, an opening communicated with the headspace heating assembly is formed in the headspace bracket, and a sampling bottle can fall after passing through the headspace heating assembly and the opening in sequence.
According to the headspace mechanism for the soil VOCs treatment instrument, the two opposite side surfaces of the heating blocks are respectively provided with the bulge, and when the sampling bottle flows onto the headspace heating assembly, the bulges can be clamped at the bottle body.
According to the headspace mechanism for the soil VOCs treatment instrument, each group of second limiting devices comprises a second limiting block sleeved on the second adjusting screw rod and a limiting baffle fixedly arranged on the second limiting block, when in headspace operation, the limiting baffles relatively move between the headspace heating assembly and the headspace support to prevent the sampling bottle from falling, and when the headspace is finished and the two groups of headspace needle assemblies move back to a certain position, the limiting baffles are far away from the headspace heating assembly, so that the sampling bottle can fall from the headspace mechanism after passing through the headspace heating assembly.
The invention also provides a soil VOCs treatment instrument comprising any vibrating mechanism, the soil VOCs treatment instrument further comprises a vibrating mechanism, the vibrating mechanism is used for vibrating the sampling bottle, the vibrating mechanism is inclined at an acute angle relative to the ground, and the sampling bottle can automatically flow from the vibrating mechanism to the headspace mechanism.
The headspace mechanism soil VOCs processor for the soil VOCs processor is different from the prior art in that the sampling bottle of the soil VOCs processor is a sampling bottle with both ends capable of performing headspace extraction, so that soil samples are more volatile, and the detection precision is improved; the head space mechanism comprises two groups of head space needle assemblies, each group of head space needle assemblies comprises a head space needle, the head space extraction of the two ends of the sampling bottle is realized, the detection precision is improved, the two groups of head space needle assemblies can move relatively/reversely, the head space extraction of the two ends of the sampling bottle is realized, and the sampling bottle after the head space is finished falls. The device has higher detection precision and simple and convenient operation.
In the soil VOCs treatment instrument, in order to improve the rigidity and the tightness of a sampling bottle, the end socket is designed into a first part and a second part; the headspace mechanism headspace comprises a second adjusting screw and a headspace heating assembly, the headspace heating assembly is arranged corresponding to the circulation position of the sampling bottle on the oscillation mechanism, so that the sampling bottle can conveniently flow onto the headspace heating assembly, the second adjusting screw realizes the relative/opposite movement of the two groups of headspace needle assemblies, and the headspace operation of the sampling bottle is realized; when the head space is over, the second limiting device is used for limiting the sampling bottle so as to prevent the sampling bottle from falling off automatically, and after the head space is over, the sampling bottle can fall off automatically, so that the operation is simplified; the headspace heating assembly is designed to be a through body, so that the sampling bottle can automatically drop down, and the operation is simplified; the head space heating assembly is a through body surrounded by two heating blocks and two supporting plates, is convenient to manufacture, can realize the heating function of the head space heating assembly, and can also realize self-dropping of the sampling bottle after the head space is finished; a headspace bracket is arranged below the headspace heating assembly, so that the headspace heating assembly is better supported and fixed; protrusions are arranged on two opposite side surfaces of the heating block, so that the sampling bottle is prevented from moving along the axis direction of the bottle body when the head space of the sampling bottle is in the process of taking the sample, and the limiting effect on the sampling bottle is better achieved; the second limiting device comprises a second limiting block and a limiting baffle, the limiting baffle and the second limiting block synchronously move along with the second adjusting screw, the two limiting baffles move relatively/reversely, the limiting effect of the limiting baffle on the sampling bottle is achieved, and the sampling bottle automatically falls after the head space is finished.
The headspace mechanism for the soil VOCs treatment apparatus of the present invention will be further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a perspective view of a headspace mechanism for a soil VOCs treatment apparatus of the present invention;
FIG. 2a is a perspective view of a headspace mechanism for a soil VOCs treatment apparatus of the present invention and an oscillating mechanism in the soil VOCs treatment apparatus;
FIG. 2b is a front view of the headspace mechanism for a soil VOCs treatment apparatus of the present invention with the oscillating mechanism mounted on the support base;
FIG. 3 is a rear view of the headspace mechanism for a soil VOCs treatment apparatus of the present invention, and the oscillating mechanism in the soil VOCs treatment apparatus;
Fig. 4 is a front view of the headspace mechanism for the soil VOCs treatment apparatus of the present invention when the oscillating mechanism in the soil VOCs treatment apparatus performs a limiting operation;
FIG. 5a is a perspective view of the upper rail of the headspace mechanism for a soil VOCs treatment apparatus of the present invention, and the oscillating mechanism in the soil VOCs treatment apparatus;
FIG. 5b is a perspective view of the lower rail of the oscillation mechanism in the soil VOCs treatment apparatus of the present invention;
FIG. 6a is a schematic view showing the installation of the oscillation buffer pad of the oscillation mechanism on the upper guide rail in the headspace mechanism for the soil VOCs treatment apparatus of the present invention;
FIG. 6b is a schematic view showing the installation of the oscillation buffer pad of the oscillation mechanism of the soil VOCs treatment apparatus on the lower guide rail;
FIG. 7 is a perspective view of a spacing connector of an oscillation mechanism in the soil VOCs treatment apparatus of the present invention;
FIG. 8 is a perspective view of the headspace mechanism of the soil VOCs treatment apparatus of the present invention;
FIG. 9 is a perspective view of a headspace stent of a headspace mechanism in a soil VOCs treatment apparatus of the present invention;
FIG. 10 is a perspective view of a headspace mechanism for a soil VOCs treatment apparatus and a limit baffle of the headspace mechanism in the soil VOCs treatment apparatus of the present invention;
FIG. 11a is a front view of one of the heating blocks of the headspace mechanism of the soil VOCs treatment apparatus of the present invention, away from the oscillating mechanism;
FIG. 11b is a front view of one of the heating blocks of the headspace mechanism of the soil VOCs treatment apparatus of the present invention, which is adjacent to the oscillating mechanism;
FIG. 12 is a front view of a headspace mechanism for a soil VOCs treatment apparatus and a sample bottle in the soil VOCs treatment apparatus of the present invention;
FIG. 13 is a cross-sectional view taken at A-A of FIG. 12;
Fig. 14a is a perspective view of the head holder of the sampling bottle in the soil VOCs treatment apparatus of the present invention;
Fig. 14b is a front view of the head holder of the sampling bottle in the soil VOCs treatment apparatus of the present invention;
FIG. 14c is a cross-sectional view of the head holder of the sample bottle of the soil VOCs treatment apparatus of the present invention taken along the axial direction thereof;
fig. 14d is a bottom view of the end head mount of the sampling bottle in the soil VOCs treatment apparatus of the present invention;
fig. 15a is a perspective view of the head clamping sleeve of the sampling bottle in the soil VOCs treatment apparatus of the present invention;
Fig. 15b is a cross-sectional view of the head ferrule of the sampling bottle in the soil VOCs treatment apparatus of the present invention along the axial direction thereof;
fig. 15c is a top view of the head clamping sleeve of the sampling bottle in the soil VOCs treatment apparatus of the present invention;
FIG. 16a is a perspective view of the head over sleeve of the sampling bottle in the soil VOCs treatment apparatus of the present invention;
FIG. 16b is a cross-sectional view of the head over sleeve of the sampling bottle in the soil VOCs treatment apparatus along the axial direction thereof, in accordance with the present invention;
FIG. 17a is a perspective view of the body of the sample bottle in the soil VOCs treatment apparatus of the present invention;
FIG. 17b is a cross-sectional view of the body of the sample bottle of the soil VOCs treatment apparatus of the present invention along the axial direction thereof;
fig. 17c is a top view of the bottle body of the sampling bottle in the soil VOCs treatment apparatus of the present invention.
1-Sampling bottle, 2-bottle body, 3-end head assembly, 4-organic filter membrane, 5-sealing membrane, 6-end head seat, 7-first part, 8-clamping groove, 9-clamping table, 10-second part, 11-end head sleeve and 12-end head sleeve,
The vibration mechanism comprises a vibration mechanism body, a vibration guide rail body, an upper guide rail body, a lower guide rail body, a 17-connection lug plate, a 18-vibration power component, a 19-vibration base, a 20-vibration spring, a 21-vibration buffer cushion, a 22-vibration motor seat, a 23-clamp, a 24-first limiting device, a 25-limiting motor, a 26-first adjusting screw rod, a 27-limiting connecting piece, a 28-upper connecting piece, a 29-lower connecting piece, a 30-limiting stop lever, a 31-upper stop lever, a 32-lower stop lever, a 33-first limiting block, a 34-upper connecting plate, a 35-lower connecting plate and a 36-limiting motor support frame,
37-Headspace mechanism, 38-headspace needle assembly, 39-headspace power component, 40-second adjusting screw, 41-headspace heating assembly, 42-heating block, 43-bulge, 44-supporting plate, 45-headspace bracket, 46-second limiting block, 47-limiting baffle, 48-headspace needle, 49-headspace needle bracket, 50-opening, 51-supporting base, 52-oscillating bracket, 53-reinforcing rib plate, 54-bracket column and 55-linear bearing.
Detailed Description
In the present application, "upper" is an orientation perpendicular to the ground surface, and "lower" is an orientation perpendicular to the ground surface.
The earlier-stage vibration of the sampling bottle 1 can enable the sample to volatilize better at an accelerated speed, so that the detection precision is improved. In order to enable the soil sample in the sampling bottle 1 to vibrate better, avoid the accumulation of the soil sample in the vibration process, and simultaneously solve the problem of low precision caused by the headspace extraction at one end in the prior art, the invention provides a headspace mechanism for a soil VOCs processor and the soil VOCs processor,
As shown in fig. 1, the sampling bottle comprises a sampling bottle 1, an oscillation mechanism 13 for oscillating the sampling bottle 1 and a headspace mechanism 37 for headspace of the sampling bottle 1, wherein the headspace mechanism 37 is parallel to the ground, the oscillation mechanism 13 is arranged at an acute angle relative to the ground, the sampling bottle 1 can flow into the headspace mechanism 37 after the oscillation mechanism 13 completes the oscillation, the oscillation mechanism 13 is arranged at an acute angle relative to the ground so as to facilitate the flow of the sampling bottle 1,
As shown in fig. 12 and 13, the sampling bottle 1 comprises a bottle body 2 and a group of end head assemblies 3 respectively arranged at two ends of the bottle body 2, an organic filter membrane 4 is arranged at one end of each group of end head assemblies 3 close to the bottle body 2 along the axis direction of the bottle body 2, a sealing membrane 5 is arranged at one end of each end head assembly 3 far away from the bottle body 2,
The oscillating mechanism 13 comprises an oscillating guide rail 14, the oscillating guide rail 14 is arranged along the circulation direction of the sampling bottles 1 and is inclined at an acute angle relative to the ground, a plurality of sampling bottles 1 are sequentially arranged on the oscillating guide rail 14 along the circulation direction and are horizontally arranged relative to the oscillating guide rail 14,
The head space mechanism 37 comprises two groups of head space needle assemblies 38 capable of moving relatively/reversely, each group of head space needle assemblies 38 comprises a head space needle 48, the two groups of head space needle assemblies 38 are arranged parallel to the ground, when the sampling bottle 1 flows onto the head space mechanism 37, the two groups of head space needle assemblies 38 are respectively positioned at two sides of the sampling bottle 1, after the head space operation is started, the two groups of head space needle assemblies 38 can move relatively, so that the two head space needle assemblies 48 can simultaneously insert and break the sealing membrane 5 and do not touch the organic filter membrane 4 to enter the sampling bottle 1 to carry out head space on the sampling bottle 1, and after the head space operation is completed, when the head space needle assemblies 38 move reversely to a certain position, the sampling bottle 1 can drop from the head space mechanism 37.
According to the invention, the sampling bottle 1 is the sampling bottle 1 with both ends capable of carrying out headspace extraction, so that a soil sample is more volatile, and the detection precision is improved conveniently; the vibration mechanism 13 is arranged at an acute angle opposite to the vibration guide rail 14, and the sampling bottle 1 is horizontally arranged, so that the accumulation of soil samples in the sampling bottle 1 during vibration is effectively avoided, the volatilization of the soil samples is facilitated, and the detection precision is improved; the head space mechanism 37 comprises two groups of head space needle assemblies 38, each group of head space needle assemblies 38 comprises a head space needle 48, head space extraction of two ends of the sampling bottle 1 is achieved, detection precision is improved, the two groups of head space needle assemblies 38 can move relatively/reversely, head space extraction of two ends of the sampling bottle 1 is achieved, and the sampling bottle 1 falls after head space is finished. The device has higher detection precision and simple and convenient operation.
Preferably, in order to improve the rigidity and the tightness of the sampling bottle 1, the headspace operation at both ends of the sampling bottle 1 is realized, so that the detection precision is improved, as shown in fig. 12 and 13, each group of end assemblies 3 comprises an end socket 6 sleeved at the end part of the bottle body 2, an end sleeve 11 sleeved in the other end part of the end socket 6 and an end sleeve 12 sleeved on the other end part of the end socket 6, the organic filter membrane 4 is arranged at a position on the end socket 6 close to the end part of the bottle body 2, the end sleeve 11 is positioned at one side, far away from the bottle body 2, of the organic filter membrane 4, the sealing membrane 5 covers the other end part of the end socket 6, and a through hole is formed in the end sleeve 12, so that the sealing membrane 5 is partially exposed. Specifically, as shown in fig. 14a to 17c, the bottle body 2, the end socket 6, the end ferrule 12 and the end sleeve 11 are all solid of revolution parts, and when the parts are assembled together in sequence, the axes of the parts coincide with each other.
Further preferably, in order to better realize the connection between the end socket 6 and the end cutting sleeve 12, the bottle body 2 and the end passing sleeve 11, as shown in fig. 13 in combination with fig. 14a, 14b, 14c and 14d, the end socket 6 comprises a first part 7 and a second part 10 integrally formed with the first part 7, the outer diameter of the first part 7 is larger than that of the second part 10, the first part 7 is sleeved at the end part of the bottle body 2, the end passing sleeve 11 is sleeved inside the second part 10, the end cutting sleeve 12 is sleeved outside the second part 10, the organic filter membrane 4 is positioned at the connection part of the first part 7 and the second part 10, and the sealing membrane 5 covers the end parts of the second part 10 and the end passing sleeve 11.
Further preferably, in order to improve the tightness of the sampling bottle 1, as shown in fig. 14a and fig. 14c, a clamping groove 8 is provided in the first portion 7, and a sealing ring, preferably an O-ring, is mounted in the clamping groove 8. It is further preferred that the clamping groove 8 is an annular sealing clamping groove 8 for the convenience of manufacture, and the clamping grooves 8 are preferably two.
It is further preferred that, in order to facilitate the connection of the end cap 6 to the bottle body 2, as shown in fig. 13 in combination with fig. 14a, the first portion 7 is in a snap-fit connection to the bottle body 2, such that a rigid connection is formed between the two, thereby achieving a relative fixation of the end cap 6 to the bottle body 2.
Further preferably, in order to increase the rigidity of the sampling bottle 1, as shown in fig. 13 and 14c, a clamping table 9 is provided on the outer peripheral surface of the second portion 10, and the end socket 6 is clamped on the end socket 6 through the clamping table 9 and the end clamping sleeve 12, so that a rigid connection is formed between the end clamping sleeve 12 and the end socket 6.
It is further preferred that the sampling bottle 1 is made of 316 material, is resistant to corrosion and oxidation treatment, is resistant to high temperature, and can be used for a long period of time in order to improve the service life of the sampling bottle 1.
Preferably, in order to better perform the oscillation operation on the sampling bottle 1, as shown in fig. 1 in combination with fig. 2a, 2b and 3, the oscillation mechanism 13 further includes an oscillation power component 18 and an oscillation base 19 for supporting the oscillation guide rail 14, the oscillation power component 18 is used for providing a power source for the oscillation of the sampling bottle 1, the oscillation power component 18 is preferably an oscillation motor, and the oscillation base 19 is inclined at an acute angle with respect to the ground. The inclination angle of the oscillation base 19 is preferably consistent with the inclination angle of the oscillation guide rail 14, so as to ensure the stability and uniformity of oscillation. The acute angle is preferably 5 degrees.
Further preferably, as shown in fig. 1 and 2b, the invention further comprises a supporting base 51 fixedly installed on the ground, the oscillation base 19 is fixed on the supporting base 51 through an oscillation support 52 arranged below, specifically, the supporting base 51 is arranged in parallel relative to the ground, the oscillation supports 52 are four respectively distributed at four azimuth angles of the oscillation base 19, and the two oscillation supports 52 close to the headspace mechanism 37 are the same in height and smaller than the two oscillation supports 52 far from the headspace mechanism 37, so that the oscillation base 19 is obliquely arranged relative to the ground, and the oscillation base 19 is downwardly inclined towards the headspace mechanism 37 side in the circulation direction of the sampling bottle 1. The specific inclination angle is 5 degrees. It is further preferable that a reinforcing rib plate 53 is provided at the junction of the oscillating bracket 52 and the support base 51.
A plurality of oscillating springs 20 are fixedly arranged between the oscillating base 19 and the oscillating guide rail 14, so that better oscillation volatilization of samples in the sampling bottle 1 is facilitated.
Further preferably, in order to improve the stability of the sample bottle 1 placed in the oscillating guide rail 14 and ensure the stability of the oscillation of the sample bottle 1, as shown in fig. 1 in combination with fig. 5a and 5b, the oscillating guide rail 14 includes an upper guide rail 15, a lower guide rail 16 arranged parallel to the upper guide rail 15, a containing space is formed between the upper guide rail 15 and the lower guide rail 16, a plurality of sample bottles 1 are located in the containing space, an oscillating power component 18 is disposed on the upper side of the upper guide rail 15, and an oscillating spring 20 is disposed between the oscillating base 19 and the lower guide rail 16. Specifically, the sections of the upper guide rail 15 and the lower guide rail 16 are both in a shape of inverted U, the upper guide rail 15 and the lower guide rail 16 are buckled to form a containing space, connecting lug plates 17 are arranged at corresponding positions of the side surfaces of the upper guide rail 15 and the lower guide rail 16, and the upper guide rail 15 and the lower guide rail 16 are fixedly connected through the connecting lug plates 17. Specifically, as shown in fig. 2b, the oscillating bracket 52 is disposed between the lower rail 16 and the oscillating base 19.
Further preferably, in order to better protect the sampling bottle 1 and eliminate vibration noise, as shown in fig. 1 in conjunction with fig. 6a and 6b, a vibration buffer 21 is mounted on one side of the upper rail 15 opposite to the lower rail 16, and preferably, the vibration buffer 21 is a rubber pad.
It is further preferred that the oscillating motor is arranged on the outer side of the upper rail 15, as shown in fig. 2a and 2 b. Specifically, an oscillating motor seat 22 is fixedly installed on the outer side face of the upper guide rail 15, and an oscillating motor is fixed on the oscillating motor seat 22 through a clamp 23.
It is further preferred that, in order to enable the sample bottle 1 to be better fixed in the oscillating guide rail 14 in order according to the design and to be able to flow in order to the next detection process, as shown in fig. 1 in combination with fig. 2a, 2b, 4 and 7, the oscillating mechanism 13 further comprises a first limiting device 24, the first limiting device 24 is used for limiting the sample bottle 1 during the oscillating operation and limiting the sample bottle 1 when the sample bottle 1 flows onto the headspace mechanism 37 after the oscillating operation is completed, the first limiting device 24 comprises a limiting motor 25, a first adjusting screw 26 connected with the limiting motor 25, a limiting connecting piece 27 moving synchronously with the first adjusting screw 26, a limiting stop lever fixedly arranged on the limiting connecting piece 27 and a supporting frame of the limiting motor 25, the limiting connecting piece 27 and the limiting stop lever 30 are respectively provided with two groups, namely an upper connecting piece 28, an upper stop lever 31 connected with the upper connecting piece 28, a lower connecting piece 29 and a lower stop lever 32 connected with the lower connecting piece 29, wherein the upper stop lever 31 can penetrate into and not penetrate out of the oscillating guide rail 14 from one outer side surface of the oscillating guide rail 14, the lower stop lever can penetrate into and not penetrate out of the oscillating guide rail 14 from the other outer side surface of the oscillating guide rail 14, when the tail end of the upper stop lever 31/lower stop lever penetrates into the oscillating guide rail 14 and is propped against the inner side surface of the oscillating guide rail 14, the tail end of the lower stop lever/upper stop lever 31 is just separated from the oscillating guide rail 14, and the interval between the upper stop lever 31 and the lower stop lever is the outer diameter length of the bottle body 2 of the sampling bottle 1.
Specifically, as shown in fig. 2a and fig. 2b in combination with fig. 7, a first limiting block 33 is sleeved on the first adjusting screw 26, a limiting connecting piece 27 is fixedly connected on the outer side surface of the first limiting block 33, two end parts of the limiting connecting piece 27 are respectively and fixedly connected with an upper connecting plate 34 and a lower connecting plate 35 through bolts, namely, the end part of the upper connecting piece 28 is connected with the upper connecting plate 34, the end part of the lower connecting piece 29 is connected with the lower connecting plate 35, the upper connecting plate 34 and the lower connecting plate 35 are both arranged parallel to the oscillating guide rail 14, a fixed end of the upper stop lever 31 is fixed on the upper connecting plate 34, and a fixed end of the lower stop lever is fixed on the lower connecting plate 35.
As shown in fig. 4, the upper bar 31 and the lower bar divide the oscillating rail 14 into two areas: the vibration area and the circulation area, the region that presss from both sides between last pin 31 and the lower shelves pole is the circulation area, because go up the interval between pin 31 and the lower shelves pole and be the external diameter length of the bottle 2 of a sampling bottle 1, consequently circulate regional only a sampling bottle 1 of holding, this sampling bottle 1 is used for circulation to carry out the headspace operation on the headspace mechanism 37, the rest of vibration guide rail 14 is the vibration area, the vibration area can hold a plurality of sampling bottles 1, be convenient for vibrate a plurality of sampling bottles 1 simultaneously, provide efficiency. When the sampling bottle 1 is subjected to vibration operation, as the vibration guide rail 14 is an inclined guide rail, in order to prevent the sampling bottle 1 from flowing to the headspace mechanism 37 along the inclined direction of the vibration guide rail 14, the first limiting device 24 is utilized to limit the sampling bottle 1, the limiting motor 25 is driven, the limiting motor 25 drives the first adjusting screw 26 to rotate, the first adjusting screw 26 drives the first limiting block 33 to move downwards, the first limiting block 33 drives the limiting connecting piece 27 to synchronously move downwards, so that the upper stop lever 31 is driven to move downwards to slowly penetrate into the vibration guide rail 14, the lower stop lever is also driven to move downwards to slowly separate from the vibration guide rail 14, the blocking effect on the sampling bottle 1 is realized through the upper stop lever 31, the limiting motor 25 is stopped, and the vibration motor is started to start vibration operation; after the oscillation is finished, the sampling bottle 1 needs to carry out the next procedure to carry out the headspace operation, the limiting motor 25 is started again, the first adjusting screw 26 drives the first limiting block 33 to move upwards, the first limiting block 33 drives the limiting connecting piece 27 to move upwards synchronously, the upper stop lever 31 is driven to move upwards and slowly separate from the oscillating guide rail 14, the lower stop lever also moves upwards and slowly penetrates into the oscillating guide rail 14, the limiting motor 25 is stopped, one sampling bottle 1 in the oscillating area of the oscillating guide rail 14 moves to the circulation area along the guide rail, and after the one sampling bottle 1 enters the headspace mechanism 37 through the circulation area, the rest sampling bottles 1 slide from the oscillating guide rail 14 through the lower stop lever; when a sample bottle 1 enters the circulation area, in order to make the sample bottle 1 further enter the headspace mechanism 37, the limit motor 25 is started again, so that the first adjusting screw 26 moves, and then drives the upper stop lever 31 and the lower stop lever to move downwards, the upper stop lever 31 moves downwards to penetrate into the oscillating guide rail 14 slowly and the lower stop lever also moves downwards to be separated from the oscillating guide rail 14 slowly, the limit motor 25 is turned off, so that the sample bottle 1 in the circulation area enters the headspace mechanism 37, and the sample bottle 1 in the oscillation area is prevented from sliding down along the movement of the oscillating guide rail 14 due to the blocking effect of the upper stop lever 31. The limiting effect on the sampling bottle 1 is effectively achieved through the above first limiting device 24 and the operation steps.
Further preferably, the limit motor support 36 may be fixed to the ground or other support base, such as the vibration base 19.
It is further preferred that, as shown in fig. 2a, in order to achieve a high precision of the movement of the upper bar 31, a linear bearing 55 is mounted between the upper bar 31 and the oscillating rail 14.
Further preferably, in order to better exert the limiting function of the upper stop lever 31 on the sampling bottle 1 and improve the vibration performance of the sampling bottle 1, as shown in fig. 4, the number of the upper stop levers 31 is two, and when the upper stop lever 31 penetrates into the vibration guide rail 14 and does not penetrate out of the vibration guide rail 14, the two upper stop levers 31 can be respectively clamped at the joint of the end head assembly 3 and the bottle body 2.
Further preferably, in order to better exert the limit effect of the lower stop lever 32 on the sampling bottle 1, the sampling bottle 1 is prevented from directly flowing into the top mechanism 37 along the oscillating guide rail 14, as shown in fig. 4, the number of the lower stop levers is two, and when the upper stop lever 31 penetrates into the oscillating guide rail 14 and does not penetrate out of the oscillating guide rail 14, the two upper stop levers 31 can be respectively clamped at the joint of the end head assembly 3 and the bottle body 2.
It is further preferred that the upper link 28 and the lower link 29 are integrally formed as a single piece in order to better achieve synchronous movement of the upper bar 31 and the lower bar.
Preferably, in order to facilitate the headspace operation on the sampling bottle 1, as shown in fig. 1 in combination with fig. 8, the headspace mechanism 37 further includes a headspace power component 39, a second adjusting screw 40 connected to the headspace power component 39, and a headspace heating assembly 41, where the headspace heating assembly 41 is disposed at a position corresponding to the circulation position of the sampling bottle 1 on the oscillation mechanism 13, the sampling bottle 1 circulates onto the headspace heating assembly 41 after the oscillation operation is completed, and the two groups of headspace needle assemblies 38 are sleeved on the second adjusting screw 40 and move synchronously with the second adjusting screw 40 to realize the relative/opposite movement of the two groups of headspace needle assemblies 38. The headspace power means 39 is preferably a headspace motor.
It is further preferred that, in order to achieve a limit of the headspace of the sampling bottle 1, and a drop of the sampling bottle 1 after the completion of the headspace operation, when the sampling bottle 1 completes the headspace operation on the headspace mechanism 37, the two sets of headspace needle assemblies 38 are moved back to a certain position, the sampling bottle 1 can drop from the headspace heating assembly 41,
When the sampling bottle 1 flows onto the headspace heating assembly 41, and the two groups of headspace needle assemblies 38 perform headspace operation on the sampling bottle 1 by relative movement, a second limiting device for preventing the sampling bottle 1 from falling is further arranged on each group of headspace needle 48 heating assemblies.
Further preferably, in order to better realize the automatic dropping of the sampling bottle 1 after the completion of the headspace, as shown in fig. 8, the headspace heating assembly 41 is a penetrating body, so that after the headspace operation is completed, the two groups of headspace needle assemblies 38 move back to a certain position, and the sampling bottle 1 can drop after passing through the headspace heating assembly 41.
It is further preferable that, for convenience of manufacture and self-dropping of the sampling bottle 1 after the completion of the headspace, as shown in fig. 8 in combination with fig. 11a and 11b, the headspace heating unit 41 includes two heating blocks 42 disposed opposite to each other and two support plates 44 connected to the heating blocks 42, the two heating blocks 42 and the two support plates 44 are integrated, and the headspace needle 48 is capable of performing a headspace operation on the sampling bottle 1 across the support plates 44. Specifically, one of the two heating blocks 42 is disposed close to the oscillating mechanism 13, the other heating block 42 is disposed opposite to the other heating block 42, and two support plates 44 are distributed on both sides of the two heating blocks 42.
Further preferably, in order to better support the headspace heating assembly 41, as shown in fig. 8 in combination with fig. 9, the headspace mechanism 37 further includes a headspace support 45 disposed below the headspace heating assembly 41, the headspace support 45 is used for supporting the headspace heating assembly 41, an opening 50 in communication with the headspace heating assembly 41 is formed in the headspace support 45, and the sampling bottle 1 can fall through the headspace heating assembly 41 and the opening 50 in sequence. The headspace support 45 is preferably secured to the ground, or other support such as the shock mount 19 or the like,
Further preferably, in order to better limit the space on the top of the sampling bottle 1, avoid the movement of the sampling bottle 1 along the axis direction of the bottle body 2, as shown in fig. 11a and 11b, protrusions 43 are arranged on opposite sides of the two heating blocks 42, when the sampling bottle 1 flows onto the top heating component 41, the protrusions 43 can be clamped at the bottle body 2, the sampling bottle 1 is properly assembled with the heating blocks 42, and meanwhile, the movement of the sampling bottle 1 along the axis direction of the bottle body 2 is prevented, so that the limit effect on the sampling bottle 1 is further realized, and the reasonable insertion of the headspace needle 48 into the sampling bottle 1 is ensured. Meanwhile, when the sampling bottle 1 flows onto the heating component 41, the protrusion 43 also plays a guiding role on the sampling bottle 1 falling onto the heating component 41, so that the sampling bottle 1 is prevented from being clamped between the two heating blocks 42 when vibrating and rolling along the guide rail of the vibrating guide rail 14.
Further preferably, as shown in fig. 11b, the protrusion 43 of the heating block 42 near the oscillating mechanism 13 of the two heating blocks 42 is designed as an inclined plane, and the inclined plane can be used as a flow surface or a flow guiding surface for the sample bottle 1 to flow onto the heating block assembly 41, so that the sample bottle 1 can flow onto the heating block assembly 41 accurately and quickly, and the structure is simple, and the mechanical efficiency is high.
Further preferably, in order to better realize the spacing of the sampling bottle 1 when the headspace is over, avoid the dropping of the sampling bottle 1 and the self-dropping of the sampling bottle 1 after the headspace is over, as shown in fig. 8 in combination with fig. 10, each group of second spacing devices includes a second spacing block 46 sleeved on the second adjusting screw 40, and a spacing baffle 47 fixedly arranged on the second spacing block 46, when the headspace is operated, the spacing baffle 47 relatively moves between the headspace heating assembly 41 and the headspace bracket 45 to block the dropping of the sampling bottle 1, when the headspace is over, the two groups of headspace needle assemblies 38 move back to the headspace heating assembly 41, so that the sampling bottle 1 can drop from the headspace mechanism 37 after passing through the headspace heating assembly 41.
Further preferably, in order to better fix the head space needle 48, as shown in fig. 8, the head space needle assembly 38 further includes a head space needle holder 49, the head space needle holder 49 is fixedly provided on the second stopper 46, and the head space needle holder 49 is used for supporting the head space needle 48.
The working process of the head space mechanism is as follows: before the sampling bottle 1 flows from the oscillation mechanism 13 to the top heating assembly 41, firstly, a top motor is started, the top motor drives a second adjusting screw 40 to rotate, the second adjusting screw 40 drives two groups of second limiting blocks 46 to relatively move, the second limiting blocks 46 drive a top needle bracket 49, a top needle 48 and a limiting baffle 47 on the second limiting blocks to relatively move until the limiting baffle 47 moves between the top bracket 45 and the top heating assembly 41 to avoid dropping of the sampling bottle 1 during circulation, meanwhile, the top needle 48 does not pass through a supporting plate 44 at the position to avoid movement interference when the sampling bottle 1 flows to the top heating assembly 41, then the top motor is stopped, after that, the sampling bottle 1 flows to the top heating assembly 41 to heat the sampling bottle 1 through the top heating assembly 41, the top motor is started again after the heating is finished, the headspace motor drives the second adjusting screw 40 to rotate, the second adjusting screw 40 drives the parts thereon to move relatively continuously, so that the headspace needle 48 is slowly inserted into the sampling bottle 1 to perform headspace until the headspace needle 48 is inserted into the sealing membrane 5 without being inserted into the organic filter membrane, the headspace motor is stopped, the headspace motor is started again to rotate reversely, the second adjusting screw 40 is driven to rotate reversely, the headspace motor is started after the second adjusting screw 40 drives the sampling bottle 1 to flow from the oscillating mechanism 13 to the headspace heating assembly 41, the headspace needle bracket 49, the headspace needle 48 and the limit baffle 47 on the headspace motor are moved reversely, the headspace needle 48 is slowly pulled out from the sampling bottle 1, when the two groups of limit baffles 47 continue to move reversely to a certain position, the limit baffle 47 is separated from the headspace bracket 45 and the headspace heating assembly 41, the sampling bottle 1 falls by itself after passing through the head space heating assembly 41 and the head space holder 45.
Preferably, as shown in fig. 1, the head space mechanism 37 is secured to the support base 51 by a bracket post 54.
It is further preferred that, in order to facilitate the circulation of the sampling bottle 1, the distance between the oscillation mechanism 13 and the ground is greater than the distance between the headspace mechanism 37 and the ground, so that the sampling bottle 1 automatically circulates onto the headspace mechanism 37 under the action of gravity when circulating. Specifically, the height of the oscillating mechanism 52 is greater than the height of the support post 54.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the present invention.