Sampling device for monitoring groundwater pollutionTechnical Field
The invention relates to the field of sampling devices, in particular to a sampling device for monitoring groundwater pollution.
Background
Groundwater refers to water in a rock gap below the ground, well water belongs to underground water, and groundwater monitoring refers to the condition that a related management department needs to monitor the water level, water quality and the like of the groundwater, so that the groundwater is protected.
One of the existing groundwater monitoring works is to sample groundwater, taking well water as an example, patent publication number CN116718431A discloses a groundwater sampling device, including sampling mechanism, haulage rope and moving truck, etc., need to move the moving truck near the well head when sampling, then through letting out the haulage rope for sampling mechanism can enter into the well, thereby can sample well water, but because put sampling mechanism into the well through the haulage rope, haulage rope can be subjected to wind force or other external force influence and shake, thereby make sampling mechanism also take place to rock, then sampling mechanism can take place to damage because of colliding the wall of a well, thereby influence the sampling, consequently a sampling device for groundwater pollution monitoring that can stably sample is developed now.
Disclosure of Invention
In order to overcome the defect that a sampling barrel is easy to damage due to shaking and impacting a well wall in the existing sampling process of groundwater monitoring, the invention provides a sampling device for monitoring groundwater pollution, which can stably sample.
The technical proposal is as follows: the utility model provides a sampling device for groundwater pollution monitoring, including the shallow, the shallow rigid coupling has the rolling ware, the shallow rigid coupling has first guide, it has first stay cord to wind on the rolling ware, first guide is walked around to first stay cord, one side rigid coupling that the rolling ware was kept away from to first stay cord has the sample bucket, the sample bucket top rigid coupling has the filter screen, still including the fixing base, fixing base symmetry rigid coupling is in the sample bucket, one side rigid coupling that first guide is close to the sample bucket has the restriction piece, rotationally be connected with first rotating member on the fixing base, first rotating member and restriction piece extrusion fit, wind the first torsional spring that is equipped with symmetric distribution between first rotating member and the similar fixing base, first torsional spring winds on corresponding first rotating member, the upper portion rotation of first rotating member is connected with the gyro wheel, be provided with buffer assembly on the sample bucket, buffer assembly is used for buffering the impact that the sample bucket received.
In addition, particularly preferred is that the buffer assembly comprises a first fixing piece, wherein the first fixing piece is fixedly connected to the middle of the sampling barrel in the circumferential direction, a rotating piece is connected to the first fixing piece in a rotating mode, a telescopic block is connected to the rotating piece in a sliding mode, an extrusion spring is connected between the telescopic block and the first fixing piece close to the telescopic block, and a buffer piece is connected between one side, far away from the sampling barrel, of the telescopic block in a rotating mode.
In addition, it is particularly preferred that the trolley further comprises a storage box, wherein the storage box is fixedly connected with the trolley.
In addition, particularly preferred is, still include stabilizing mean, stabilizing mean sets up in the restriction piece, stabilizing mean is used for letting the position of sampling bucket keep stable, stabilizing mean is including the bracing piece, one side rigid coupling that the bracing piece is close to the sampling bucket has the fixed screw, the fixed screw threaded connection has the screw sleeve, one side rigid coupling that the sampling bucket is close to the screw sleeve has the second mounting, the second mounting is connected with the screw sleeve rotation formula, the screw sleeve rigid coupling has first gear, the sampling bucket rotation formula is connected with the second gear, the second gear meshes with first gear, the lower part rotation formula of sampling bucket is connected with a plurality of second rotating parts of circumference distribution, the second rotating part rigid coupling has the third gear, third gear meshes with the second gear, one side rigid coupling that the sampling bucket is close to the second gear has the fixed disk, the fixed disk is connected with the second rotating part rotation, around being equipped with the second stay cord on the second rotating part, second stay cord and fixed disk sliding connection have the counter weight ball.
In addition, particularly preferred is, still including protection machanism, protection machanism sets up in first guide, and protection machanism is used for protecting first stay cord, and protection machanism includes the connecting rod, and the connecting rod rigid coupling is in first guide, and the rigid coupling has the protection network on the connecting rod, and the protection network cover is on first stay cord, and the protection network rigid coupling has equidistant a plurality of go-between of distribution, and the last slidingtype of go-between is connected with a plurality of buffer rods of circumference distribution, is connected with buffer spring between buffer rod and the close go-between.
In addition, particularly preferred is that the device further comprises a stirring mechanism, the stirring mechanism is arranged on the fixed disc and used for stirring impurities floating on the water surface, the stirring mechanism comprises rotating blocks, the number of the rotating blocks is equal to that of the second rotating parts, the rotating blocks are fixedly connected with the second rotating parts respectively, the fixed disc is connected with a circumferentially distributed movable frame in a sliding mode, the number of the movable frames is equal to that of the rotating blocks, one side of the movable frame, which is close to the adjacent rotating blocks, is rotationally connected with a stirring rod, the movable frame limits the stirring rod, the stirring rod is in extrusion fit with the adjacent rotating blocks, a circumferentially distributed supporting part is fixedly connected to the lower portion of the fixed disc, the number of the supporting parts is equal to that of the movable frames, stirring frames are rotationally connected with connecting screw rods fixedly connected to the stirring frames, third torsion springs are wound between the stirring frames and the adjacent supporting parts, and the third torsion springs are wound on the corresponding stirring frames.
In addition, it is particularly preferable that the device further comprises second torsion springs, the number of the second torsion springs is equal to that of the movable frames, and the second torsion springs are respectively wound between the deflector rod and the adjacent movable frames.
In addition, particularly preferred is, still including closing mechanism, closing mechanism sets up in the restriction piece, closing mechanism is used for preventing impurity to fall into in the water, closing mechanism is including the carriage, the carriage slidingtype is connected in the restriction piece, be connected with the connecting piece between carriage and the sampling bucket, the restriction piece rigid coupling has the second guide, the carriage slidingtype is connected with the movable plate of symmetric distribution, the movable plate is close to one side rigid coupling of second guide has the fixed column, fixed column and second guide slidingtype connection, be provided with seal assembly on the second guide, seal assembly is used for further sealing the space between movable plate and the wall of a well.
In addition, it is particularly preferred that the sealing assembly comprises an air storage tank fixedly connected with the second guide member, symmetrically distributed piston rods are slidably connected with the air storage tank, the piston rods are in extrusion fit with similar fixed columns, an air bag is connected to the moving plate, and a hose is communicated between the air bag and the air storage tank.
In addition, particularly preferred is, still include fixed establishment, fixed establishment sets up in the shallow, and fixed establishment is used for stabilizing the position of shallow, and fixed establishment is including the supporting shoe, and the supporting shoe symmetry rigid coupling is in the shallow, and threaded connection has accommodate the lead screw on the supporting shoe, and last rotation is connected with the backup pad on the accommodate the lead screw.
The invention has the following advantages: 1. according to the invention, the first rotating piece is contacted with the roller and the inner wall of the well, so that the sampling barrel is supported in an auxiliary way, the impact force of the raised part of the inner wall of the well on the sampling barrel is buffered by the buffer component, the sampling barrel is prevented from shaking in the well, the sampling barrel is prevented from being impacted to the inner wall of the well to cause damage, and the purpose of stable sampling is realized.
2. According to the invention, the first gear, the second gear and the third gear rotate through the cooperation of the fixed screw rod and the threaded sleeve, so that the second rotating piece can rotate and loosen the second pull rope, the counterweight ball moves downwards, the gravity center of the sampling barrel is lowered, the sampling barrel is further prevented from shaking, and stable sampling is facilitated.
3. According to the invention, the buffer rod and the buffer spring are used for buffering the first pull rope, so that the first pull rope is prevented from shaking to drive the sampling barrel to shake, and stable sampling is facilitated.
4. According to the invention, the rotating block pushes the deflector rod, so that the movable frame drives the deflector frame to rotate through the connecting screw rod, thereby being capable of pulling out large-volume impurities floating on the water surface, avoiding the impurities from affecting the sampling of the sampling barrel, and being beneficial to stable sampling.
5. According to the invention, the wellhead is covered by the moving plate in a closed manner, so that impurities are prevented from falling into well water during sampling, thereby avoiding the influence of the impurities on water quality, avoiding the impact of the impurities on the sampling barrel, and being beneficial to stable sampling.
6. According to the invention, the ground is supported by the adjusting screw rod and the supporting plate, so that the position of the trolley is further stabilized, and the trolley is prevented from moving during sampling, so that the shaking of the sampling barrel can be avoided, and the stable sampling is facilitated.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of a partial perspective structure of the present invention.
Fig. 3 is a schematic perspective view of the components such as the sampling barrel, the winder and the first pull rope.
Fig. 4 is a schematic perspective view of the components such as the fixing block, the limiting piece and the fixing seat.
Fig. 5 is a schematic perspective view of the buffer, the first fixing member, the roller and other components of the present invention.
Fig. 6 is a schematic perspective view of a stabilizing mechanism according to the present invention.
Fig. 7 is a schematic perspective view of the support rod, the fixed screw rod, the fixed disc and other parts of the invention.
Fig. 8 is a schematic perspective view of the components of the first gear, the second gear, the weight ball and the like.
Fig. 9 is a schematic perspective view of the second rope and weight ball according to the present invention.
Fig. 10 is a schematic perspective view of a protection mechanism according to the present invention.
FIG. 11 is a schematic perspective view of the connecting rod, the protective net, the connecting ring and other parts of the invention.
Fig. 12 is a schematic perspective view of the components of the connecting ring, the buffer rod, the buffer spring, etc. of the present invention.
Fig. 13 is a schematic perspective view of a toggle mechanism according to the present invention.
Fig. 14 is a schematic perspective view of the moving rack, toggle rack and supporting member of the present invention.
Fig. 15 is a schematic perspective view of a closure mechanism according to the present invention.
Fig. 16 is a schematic perspective view of a rotating mechanism according to the present invention.
Fig. 17 is a schematic perspective view of the moving plate, the air bag, the connector and other components of the present invention.
Fig. 18 is a schematic perspective view of the components of the air tank, hose, fixing column, etc. of the present invention.
Fig. 19 is a schematic perspective view of a fixing mechanism according to the present invention.
In the reference numerals: the device comprises a 1-cart, a 11-reel, a 12-first pull rope, a 13-first guide piece, a 14-sampling barrel, a 15-filter net, a 16-storage box, a 18-limiting piece, a 19-permanent seat, a 110-first rotating piece, a 111-first torsion spring, a 112-buffering piece, a 113-first fixing piece, a 114-roller, a 115-telescopic block, a 116-extrusion spring, a 117-rotating piece, a 2-support rod, a 21-fixing screw, a 22-fixed disc, a 23-threading sleeve, a 24-second fixing piece, a 25-first gear, a 26-second gear, a 27-counterweight ball, a 28-second pull rope, a 29-second rotating piece, a 210-third gear, a 3-connecting rod, a 31-protecting net, a 32-connecting ring, a 33-buffering rod, a 34-buffering spring, a 4-rotating block, a 41-moving frame, a 411-driving rod, a 412-second torsion spring, a 42-driving frame, a 43-supporting piece, a 44-third torsion spring, a 45-connecting screw, a 5-sliding frame, a 51-moving plate, a 52-moving plate, a 53-counterweight ball, a 28-second guide wire, a 29-second rotating piece, a 58-fixing piece, a 58-holding piece, a 58-rotating piece, a 58-holding wire, a 58-rotating piece, a 58-holding wire, a 58-rotating piece, and a 58-holding piece.
Detailed Description
The following describes in detail the preferred embodiments of the present invention with reference to the accompanying drawings.
Example 1: a sampling device for groundwater pollution monitoring, as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, including shallow 1, the upper rear portion rigid coupling of shallow 1 has the rolling ware 11, the left side rigid coupling of the upper front portion of shallow 1 has first guide 13, the winding has first stay cord 12 on the rolling ware 11, first stay cord 12 bypasses first guide 13, the lower front portion rigid coupling of first stay cord 12 has sampling barrel 14, the upper portion rigid coupling of sampling barrel 14 has filter screen 15, still include fixing base 19, fixing base 19 symmetry rigid coupling is in the upper portion of sampling barrel 14, the lower front portion rigid coupling of first guide 13 has limiting piece 18, all be connected with first rotating member 110 on the fixing base 19 in a rotating way, first rotating member 110 all with limiting piece 18 extrusion fit, all around being equipped with symmetrical distribution's first torsional spring 111 between the fixing base 19 of first rotating member 110 and limiting piece 18, first torsional spring 111 all winds on corresponding first rotating member 110, the upper portion of first rotating member 110 all is connected with gyro wheel 114 in a rotating way, sampling barrel 14 is provided with buffering subassembly, buffering subassembly is used for buffering the impact of sampling barrel 14.
As shown in fig. 3, 4 and 5, the buffer assembly includes a first fixing member 113, the number of the first fixing members 113 is four, the circumferences Xiang Gujie of the four first fixing members 113 are in the middle of the sampling barrel 14, the first fixing members 113 are all rotationally connected with a rotating member 117, the rotating member 117 is all slidably connected with a telescopic block 115, an extrusion spring 116 is connected between the telescopic block 115 and the first fixing member 113, and a buffer member 112 is rotationally connected between one side of the telescopic block 115 far away from the sampling barrel 14.
As shown in fig. 2, the cart further comprises a storage box 16, and the storage box 16 is fixedly connected to the right side of the front upper part of the cart 1.
The device is mainly used for sampling underground water and is mainly used for sampling well water when underground sewage pollution is monitored, when the device is used, firstly, the cart 1 needs to be manually pushed to the vicinity of a well to be monitored, if an operator has other related tools, the related tools can be placed in the storage box 16 to be brought to the vicinity of the well together, so that the device is convenient to take, after the cart 1 moves to the vicinity of the well, the sampling bucket 14 is positioned right above a wellhead, then the winder 11 is started, under the action of the winder 11, the first pull rope 12 is lengthened, then the sampling bucket 14 can gradually descend into the well under the action of self gravity, under the action of the sampling bucket 14, the fixing base 19, the first rotating member 110, the first torsion spring 111 and the roller 114 are all moved downward, and at the same time, the first fixing member 113, the rotating member 117, the telescopic block 115, the pressing spring 116 and the buffer member 112 are also moved downward, so that when the first rotating member 110 is moved downward to be out of contact with the restriction member 18, the first rotating member 110 is released, and at this time, the first rotating member 110 is rotated by the first torsion spring 111, so that the two first rotating members 110 are substantially formed into a V shape, and the roller 114 is contacted with the inner wall of the well, so that as the sampling barrel 14 is further lowered, the roller 114 rolls on the inner wall of the well, this further supports the barrel 14, which is more stable when the barrel 14 moves downward, and also allows the barrel 14 to move downward with a different shape of the protrusions, which may strike the barrel 14, causing the barrel 14 to deflect, so that the buffer 112 is pressed by the protrusions, the buffer 112 moves, the compression spring 116 near the protrusions compresses, and the buffer 112 is slightly tilted by the different protrusions, so that the buffer 112 can smoothly pass the protrusions, and after the buffer 112 continues to move downward beyond the protrusions, under the action of the compression spring 116, the buffer member 112 moves reversely to recover, so that the impact on the sampling barrel 14 caused by the bulge of the well wall can be buffered by the buffer member 112, the sampling barrel 14 can sample more stably, after the sampling barrel 14 enters into well water, the well water enters into the sampling barrel 14 through the filter screen 15, and under the action of the filter screen 15, impurities with larger volume in the well water cannot enter into the sampling barrel 14, after the sampling barrel 14 is filled with samples, the first pull rope 12 is controlled to tighten by the winder 11, so that the sampling barrel 14 can move upwards to recover, and the fixing seat 19, The first rotating member 110, the first torsion spring 111 and the roller 114 all move upward, and at the same time the first fixing member 113, the rotating member 117, the telescopic block 115, the compression spring 116 and the buffer member 112 also move upward, and after the sampling bucket 14 has been separated from the wellhead, the first rotating member 110 is manually drawn in, at this time the first torsion spring 111 is twisted, so that the first rotating member 110 can continue to be limited by the limiting member 18, and then the first rotating member 110 is released, the winder 11 is closed, and when the sample in the sampling bucket 14 needs to be taken out, the front lower portion of the sampling bucket 14 can be opened, well water in the sampling bucket 14 is discharged into the collection container, then close the preceding lower part of sample bucket 14 can, through first rotating member 110 and gyro wheel 114 auxiliary stay sample bucket 14 for sample bucket 14 can not take place to rock in the well, again through the impact force of buffer unit buffering well inner wall protruding department to sample bucket 14, further avoid sample bucket 14 to take place to rock, thereby can avoid sample bucket 14 to strike the well inner wall and cause the damage, realize the purpose of stable sample through sample bucket 14.
Example 2: on the basis of embodiment 1, as shown in fig. 6, 7, 8 and 9, the device further comprises a stabilizing mechanism, the stabilizing mechanism is arranged on the limiting piece 18, the stabilizing mechanism is used for keeping the position of the sampling barrel 14 stable, the stabilizing mechanism comprises a supporting rod 2, a fixed screw rod 21 is fixedly connected to one side of the supporting rod 2 close to the sampling barrel 14, a threaded sleeve 23 is connected to the lower portion of the fixed screw rod 21 in a threaded manner, a second fixing piece 24 is fixedly connected to one side of the sampling barrel 14 close to the threaded sleeve 23, the second fixing piece 24 is rotatably connected with the threaded sleeve 23, a first gear 25 is fixedly connected to the lower portion of the threaded sleeve 23, a second gear 26 is rotatably connected to the lower portion of the sampling barrel 14, the second gear 26 is meshed with the first gear 25, three second rotating pieces 29 distributed circumferentially are rotatably connected to the lower portion of the sampling barrel 14, a third gear 210 is fixedly connected to the upper portion of the second rotating piece 29, a fixed disc 22 is fixedly connected to the lower portion of the sampling barrel 14, the fixed disc 22 is rotatably connected to the third rotating pieces 29, the second rotating pieces 29 are rotatably connected to the second rotating pieces 29, and the second rotating pieces are rotatably connected to the second rotating pieces 28 and the second rotating pieces 28 are fixedly connected to the bottoms of the second rotating pieces 28.
In order to further stably lower the sampling bucket 14, when the sampling bucket 14 moves downwards, the second fixing piece 24 and the threaded sleeve 23 move downwards, but the fixed screw 21 does not move, at this time, because the threaded sleeve 23 moves downwards relative to the fixed screw 21, the threaded sleeve 23 rotates under the action of the fixed screw 21, so that the first gear 25 rotates, the first gear 25 drives the second gear 26 to rotate, the second gear 26 drives the third gear 210 to rotate at this time, the second rotating piece 29 rotates under the drive of the third gear 210, the second pull rope 28 is loosened, the counterweight ball 27 moves downwards under the action of gravity, so that the gravity center position of the sampling bucket 14 moves downwards, and the sampling bucket 14 is less prone to shaking, and can also make the position of sample bucket 14 stable when sampling in well water, when sample bucket 14 upwards moves, along with thread bush 23 and fixed lead screw 21 contact, under the effect of fixed lead screw 21, thread bush 23 can drive first gear 25 reverse rotation, thereby make second gear 26 and third gear 210 reverse rotation too, then second rotating member 29 reverse rotation tightens up second stay cord 28, thereby make weight ball 27 upwards move, conveniently accomodate, loosen through second stay cord 28, weight ball 27 moves down, make the whole focus of sample bucket 14 can the downwardly movement, sample bucket 14 is difficult to take place to rock, thereby be favorable to making sample bucket 14 stable movement, be favorable to stable sampling.
As shown in fig. 10, 11 and 12, the device further comprises a protection mechanism, the protection mechanism is arranged on the first guide piece 13 and is used for protecting the first pull rope 12, the protection mechanism comprises a connecting rod 3, the connecting rod 3 is fixedly connected to the front portion of the first guide piece 13, a protection net 31 is fixedly connected to the connecting rod 3, the protection net 31 is sleeved on the first pull rope 12, a plurality of connecting rings 32 which are distributed at equal intervals are fixedly connected to the protection net 31, four buffer rods 33 which are distributed circumferentially are connected to the connecting rings 32 in a sliding mode, and buffer springs 34 are connected between the buffer rods 33 and the adjacent connecting rings 32.
In order to prevent the first stay 12 from striking the well wall and leading to the sampling bucket 14 to shake, can cushion first stay 12 through buffer rod 33, when first stay 12 has the trend of striking the well wall, buffer rod 33 can contact with the well wall earlier, under the extrusion of well wall, buffer rod 33 moves to the one side that is close to the direction of connector ring 32, buffer spring 34 compresses, impact force when can alleviate first stay 12 and strike the well wall this moment, also can avoid first stay 12 to receive the frictional force of well wall and produce jolt, then after the position of first stay 12 is stable, buffer rod 33 reverse movement resets under buffer spring 34's effect, cushion first stay 12 through buffer rod 33 and buffer spring 34, avoid first stay 12 to shake and drive sampling bucket 14 and shake, thereby be favorable to stable sampling.
As shown in fig. 13, 14 and 15, the device further comprises a stirring mechanism, the stirring mechanism is arranged on the fixed disc 22, the stirring mechanism is used for stirring impurities floating on a water surface, the stirring mechanism comprises rotating blocks 4, the number of the rotating blocks 4 is three, the three rotating blocks 4 are fixedly connected to the lower parts of the three second rotating members 29 respectively, three moving frames 41 distributed circumferentially are connected to the fixed disc 22 in a sliding manner, a stirring rod 411 is connected to one side of each moving frame 41 close to the adjacent rotating block 4 in a rotating manner, the moving frames 41 limit the stirring rod 411, stirring rods 411 are in extrusion fit with the adjacent rotating blocks 4, three supporting members 43 distributed circumferentially are fixedly connected to the lower parts of the fixed disc 22, stirring frames 42 are connected in a rotating manner, connecting screw rods 45 are connected to the moving frames 41 in a threaded manner, third torsion springs 44 are arranged between the stirring frames 42 and the adjacent supporting members 43 in a winding manner, and the third torsion springs 44 are wound on the corresponding stirring frames 42 in a winding manner.
As shown in fig. 15, the device further includes three second torsion springs 412, and the three second torsion springs 412 are respectively wound between the shift lever 411 and the adjacent moving frame 41.
Because during sampling, there may be some bulky impurity such as fallen leaves in well water, then when second rotating member 29 rotates, under the drive of second rotating member 29, rotating block 4 also takes place to rotate, after rotating block 4 rotates to contact with driving lever 411, because driving lever 411 is spacing by carriage 41 this moment, so driving lever 411 can not take place to rotate under the extrusion of rotating block 4, so rotating block 4 can promote driving lever 411 and remove, thereby driving carriage 41 to remove, at this moment under the effect of moving carriage 41, connecting lead screw 45 can take place to rotate, thereby make driving lever 42 take place to rotate, third torsional spring 44 takes place to twist, at this moment just can dial impurity on the surface of water through driving lever 42, thereby convenient sampling, when second rotating member 29 counter-rotate, rotating block 4 also counter-rotates, because driving lever 411 is spacing by carriage 41, thereby making carriage 41 counter-move, then when rotating block 411 counter-rotate to contact with driving lever 411, thereby enabling driving lever 411 to take place under the effect of second torsional spring 412, thereby can avoid the effect of weighing down the impurity on the second torsional spring 411, thereby, the volume can be kept over the second torsional spring 412 when driving lever 411 counter-rotates, thereby the effect of rotating block 411 can take place under the second torsional spring 412, thereby the effect of avoiding the fact that the sample is rotated down by the counter-rotating.
As shown in fig. 16, 17 and 18, the device further comprises a sealing mechanism, the sealing mechanism is arranged on the limiting piece 18 and used for preventing impurities from falling into water, the sealing mechanism comprises a sliding frame 5, the sliding frame 5 is connected with the limiting piece 18 in a sliding mode, a connecting piece 53 is connected between the sliding frame 5 and the sampling barrel 14, a second guide piece 54 is fixedly connected to the left part of the limiting piece 18, moving plates 51 are connected to the front side and the rear side of the sliding frame 5 in a sliding mode, fixing columns 57 are fixedly connected to the left part of the moving plates 51 in a sliding mode, the fixing columns 57 are connected with the second guide piece 54 in a sliding mode, and a sealing component is arranged on the second guide piece 54 and used for further sealing a gap between the moving plates 51 and a well wall.
As shown in fig. 17 and 18, the sealing assembly includes an air storage tank 55, the air storage tank 55 is fixedly connected to the second guide member 54, the front and rear sides of the air storage tank 55 are both slidably connected with piston rods 58, the piston rods 58 are respectively in press fit with similar fixing columns 57, the moving plate 51 is respectively connected with an air bag 52, and hoses 56 are respectively communicated between the air bags 52 and the air storage tank 55.
Because the sampling process may cause surrounding impurities to drop into the wellhead due to sampling, water quality may be affected, and sampling is prevented from being affected, in order to avoid the situation, when the sampling barrel 14 moves downwards, the connecting piece 53 drives the moving frame 41 to move downwards, the moving plate 51 and the fixed column 57 move downwards, then the fixed column 57 moves towards one side in the mutually approaching direction under the extrusion of the second guide piece 54, so that the moving plate 51 moves along with the moving plate, the moving plate 51 can seal the upper side of the sampling barrel 14, impurities are prevented from falling into water, then the fixed column 57 can separate from the second guide piece 54 and move downwards, meanwhile, under the extrusion of the fixed column 57, the piston rod 58 can push into the air storage tank 55, so that gas in the air storage tank 55 enters the air bag 52 through the hose 56, the air bag 52 expands and fills up a gap between the moving plate 51 and the well wall, and is further sealed, when the sampling barrel 14 moves upwards, the fixed column 57 contacts the second guide piece 54 again, and then the moving plate 51 moves towards one side in the mutually separating direction, the moving plate 58 is prevented from being reset, the air bag 58 is prevented from moving downwards, the air storage tank 52 is prevented from being blocked from falling into the air storage tank 55, and the water quality is prevented from being affected by the air storage tank 52, and the impurities are prevented from falling into the air storage tank 52 through the hose 52.
As shown in fig. 19, the device further comprises a fixing mechanism disposed on the cart 1, wherein the fixing mechanism is used for stabilizing the position of the cart 1, the fixing mechanism comprises two support blocks 6, the two support blocks 6 are fixedly connected to the left and right sides of the cart 1 respectively, the support blocks 6 are respectively connected with an adjusting screw 62 in a threaded manner, and the adjusting screw 62 is respectively and rotatably connected with a support plate 61.
In order to sample more stably, can manual rotation accommodate the lead screw 62 for accommodate the lead screw 62 to move down, and under accommodate the lead screw 62 drive, backup pad 61 also can move down, accommodate the lead screw 62 and insert behind the ground, rethread backup pad 61 presses tight ground, thereby can further stabilize the position of shallow 1, when needs remove shallow 1, manual reverse rotation accommodate the lead screw 62, thereby it can to make accommodate the lead screw 62 drive backup pad 61 upward movement reset, prop up ground through accommodate the lead screw 62 and backup pad 61, further stabilize shallow 1 position, avoid taking place to remove at the time of taking a sample shallow 1, thereby can avoid taking place to rock in the sample bucket 14, be favorable to stable sample.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.