Multi-channel peristaltic pump capable of automatically relieving pressureTechnical Field
The invention relates to the technical field of peristaltic pumps, in particular to a multichannel peristaltic pump capable of automatically relieving pressure.
Background
Peristaltic pump is a liquid material conveying power device, and is widely applied to medical, environmental protection and chemical industry because of the advantage of avoiding direct contact with liquid material. The main structure of the device comprises rollers, a pressing sheet and a hose, wherein the operation process is that after the pressing sheet presses the hose tightly against the rollers, negative pressure is generated by continuous extrusion of a disc formed by a plurality of rollers, so that liquid materials are continuously conveyed out.
However, when the peristaltic pump is used, the peristaltic pump hose can not be used due to the fact that the peristaltic pump hose is extruded and deformed for a long time and loses elasticity after being used for many times, (2) in order to prolong the service life of the hose, the conventional operation is to manually loosen a card to enable the hose to recover to a natural state, and (3) in a field automation instrument and an online unattended working condition state, the hose cannot be loosened, so that the service life of the hose is greatly reduced, and the hose needs to be replaced frequently.
Disclosure of Invention
The invention aims to provide a multichannel peristaltic pump capable of automatically relieving pressure so as to solve the problems in the prior art, realize automatic pressure relief of a hose and facilitate use.
In order to achieve the above object, the present invention provides the following solutions:
The invention provides a multichannel peristaltic pump capable of automatically relieving pressure, which comprises a support, wherein a steering motor, a rolling body, a cover plate and a cover opening and closing mechanism are arranged on the support, the rolling body is columnar, a plurality of circumferentially distributed axial protrusions are arranged on the cylindrical surface of the rolling body, two ends of the rolling body are respectively in rotary fit with the support, the steering motor can drive the rolling body to rotate, the cover plate is positioned below the rolling body, one end of the cover plate is hinged with the support, a transverse arc-shaped groove and a plurality of longitudinal pressing grooves for accommodating hoses are arranged on the top surface of the cover plate, each longitudinal groove is intersected with the bottom of the transverse arc-shaped groove, when the cover plate is horizontal, the bottom of the rolling body stretches into the transverse arc-shaped groove, the cover opening and closing mechanism comprises a motor, a screw rod, a sliding block, a sliding rail and a connecting rod, the two ends of the rolling body are respectively and fixedly arranged on the support, the screw rod is fixedly connected with an output shaft of the rolling body, the sliding block is in threaded connection with the screw rod, one end of the sliding rod is in sliding fit with the sliding rail, one end of the sliding rod is in rotary fit with the sliding rod, and one end of the sliding rod is connected with the connecting rod, and the other end of the sliding rod is far away from the rotating end of the cover plate.
Preferably, the rolling body comprises a rolling shaft, two rolling plates and a plurality of rollers, wherein two ends of the rolling shaft are respectively in running fit with the support, the two rolling plates are respectively fixedly arranged on the rolling shaft, a plurality of rollers which are uniformly arranged along the circumferential direction of the rolling shaft are fixedly arranged between the two rolling plates, and the rollers can rotate relative to the rolling plates.
Preferably, a driving gear is fixedly arranged on an output shaft of the steering motor, a driven gear is fixedly arranged at one end of the rolling shaft, and a driving belt is wound on the driving gear and the driven gear.
Preferably, the longitudinal pressing groove is a through groove, one end of the longitudinal pressing groove is provided with a front clamping point, and the other end of the longitudinal pressing groove is provided with a rear clamping point.
Preferably, the bottom of apron has set firmly first locating piece, the top of slider has set firmly the second locating piece, first locating piece one end be provided with the first back of apron bottom surface vertically, second location open one end be provided with the top surface vertically second back of slider, connecting rod one end with first locating piece is articulated, the connecting rod other end with the second locating piece is articulated, just the connecting rod is located first back with between the second back.
Preferably, the top end of the sliding block is fixedly connected with a horizontal positioning plate, the length direction of the positioning plate is perpendicular to the length direction of the sliding rail, the support is fixedly provided with a cover opening limit switch and a cover closing limit switch, and the positioning plate can trigger the cover opening limit switch and the cover closing limit switch when moving along with the sliding block.
Compared with the prior art, the invention has the following technical effects:
The multichannel peristaltic pump capable of automatically releasing pressure realizes automatic pressure release on the hose and is convenient to use. The multi-channel peristaltic pump capable of automatically releasing pressure realizes automatic pressure release of the peristaltic pump through opening and closing the cover plate by the opening and closing mechanism, and can realize 0-90-degree opening and closing of the cover plate. The hose can be fixed in position through the front clamping point and the rear clamping point, the hose is prevented from being displaced when the rolling body rotates, the radian of the transverse arc-shaped groove is 5-180 degrees, and the hose can be attached to the roller in the largest quantity, so that strong power is realized. The longitudinal pressing groove is used for semi-fixing the hose and preventing the hose from moving and deforming. A plurality of longitudinal pressing grooves are formed in the cover plate, and liquid feeding can be achieved when 3-48 hoses are arranged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a multi-channel peristaltic pump capable of automatic pressure relief;
FIG. 2 is a schematic diagram of a multi-channel peristaltic pump capable of automatically releasing pressure according to the present invention;
FIG. 3 is a schematic diagram of a multi-channel peristaltic pump capable of automatic pressure relief according to the present invention;
FIG. 4 is a schematic diagram of a cover plate in a multi-channel peristaltic pump capable of automatically releasing pressure according to the present invention;
FIG. 5 is a schematic diagram II of a cover plate in the multi-channel peristaltic pump capable of automatically releasing pressure;
100, a multichannel peristaltic pump capable of automatically decompressing; 1, a bracket, 2, a cover opening motor, 3, a screw rod, 4, a sliding block, 5, a sliding rail, 6, a second positioning block, 61, a second backrest, 7, a connecting rod, 8, a first positioning block, 81, a first backrest, 9, a cover plate, 91, a front clamping point, 92, a rear clamping point, 93, a transverse arc-shaped groove, 94, a longitudinal pressing groove, 10, a hose, 11, a rotating motor, 12, a driving gear, 13, a driven gear, 14, a rolling shaft, 15, a rolling plate, 16, a roller, 17, a transverse side plate, 18, a hinge, 19, a driving belt, 20, a positioning piece, 21, a cover opening limit switch, 22 and a closed cover limit switch.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art based on the embodiments of the invention without any inventive effort, are intended to fall within the scope of the invention.
The invention aims to provide a multichannel peristaltic pump capable of automatically relieving pressure so as to solve the problems in the prior art, realize automatic pressure relief of a hose and facilitate use.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1 to 5, the present embodiment provides a multi-channel peristaltic pump 100 capable of automatically releasing pressure, comprising a bracket 1, wherein a steering motor, a roller press body, a cover plate 9 and a cover opening and closing mechanism are arranged on the bracket 1.
The rolling body is columnar, a plurality of axial protrusions distributed circumferentially are arranged on the cylindrical surface of the rolling body, two ends of the rolling body are respectively in running fit with the support 1, the steering motor can drive the rolling body to rotate, in the embodiment, the rolling body comprises a rolling shaft 14, two rolling plates 15 and a plurality of rollers 16, two ends of the rolling shaft 14 are respectively in running fit with the support 1, the two rolling plates 15 are respectively fixedly arranged on the rolling shaft 14, a plurality of rollers 16 which are uniformly arranged along the circumferential direction of the rolling shaft 14 are fixedly arranged between the two rolling plates 15, and the rollers 16 can rotate relative to the rolling plates 15. The driving gear 12 is fixedly arranged on the output shaft of the steering motor, the driven gear 13 is fixedly arranged at one end of the rolling shaft 14, and the driving gear 12 and the driven gear 13 are wound with the driving belt 19. When the steering motor is started, the driving gear 12 is driven to rotate, the driving gear 12 drives the driven gear 13 to rotate through the driving belt 19, the driven gear 13 drives the rolling shaft 14 and the rolling plate 15 to rotate, and the rolling plate 15 drives the roller 16 to rotate.
The cover plate 9 is positioned below the rolling body and one end of the cover plate is hinged with the bracket 1, the top of the bracket 1 is provided with a transverse side plate 17, the bottom end of the transverse side plate 17 is provided with a hinge 18, one end of the cover plate 9 is rotatably connected with the transverse side plate 17 through the hinge 18, the top surface of the cover plate 9 is provided with a transverse arc-shaped groove 93 and a plurality of longitudinal clamping points 92 for placing the hose 10, each longitudinal groove is intersected with the bottom of the transverse arc-shaped groove 93 (refer to fig. 1, 3, 4 and 5), the purpose of the arrangement is that after the bottom of the rolling body stretches into the transverse arc-shaped groove 93 when the cover plate 9 is horizontal, the side wall of the roller 16 on the rolling body can press and semi-fix the hose 10 in the longitudinal grooves, the longitudinal clamping points 94 are through grooves, one end of the longitudinal clamping points 91 are arranged at one end of the longitudinal clamping points 94, the other end of the longitudinal clamping points 92 are arranged at the rear clamping points 92, and the positions of the hose 10 can be fixed through the front clamping points and the rear clamping points, and the hose 10 can be prevented from shifting when the rolling body rotates.
The opening-closing mechanism comprises an opening-closing motor 2, a screw rod 3, a sliding block 4, a sliding rail 5 and a connecting rod 7, wherein the opening-closing motor 2 and the sliding rail 5 are respectively and fixedly arranged on the support 1, the screw rod 3 is fixedly connected with an output shaft of the opening-closing motor 2, the sliding block 4 is in threaded connection with the screw rod 3 and is in sliding fit with the sliding rail 5, one end of the connecting rod 7 is rotationally connected with the top end of the sliding block 4, the other end of the connecting rod 7 is rotationally connected with the cover plate 9, and the rotating connection part of the connecting rod 7 and the cover plate 9 is away from one end of the cover plate 9 hinged with the support 1.
The bottom of apron 9 has set firmly first locating piece 8, the top of slider 4 has set firmly second locating piece 6, first locating piece 8 one end is provided with the perpendicular first back 81 in bottom surface of apron 9, second location is opened one end and is provided with the perpendicular second back 61 in top surface with slider 4, connecting rod 7 one end is articulated with first locating piece 8, the connecting rod 7 other end is articulated with second locating piece 6, and connecting rod 7 is located between first back 81 and the second back 61, the setting of first back 81 and second back 61 can play limiting displacement to the rotation of connecting rod 7.
The top end of the sliding block 4 is fixedly connected with a horizontal positioning plate, the length direction of the positioning plate is perpendicular to the length direction of the sliding rail 5, the support 1 is fixedly provided with a cover opening limit switch 21 and a cover closing limit switch 22, the cover opening limit switch 21 and the cover closing limit switch 22 are respectively electrically connected with the cover opening motor 2, the positioning plate can trigger the cover opening limit switch 21 and the cover closing limit switch 22 when moving along with the sliding block 4, and the cover opening motor 2 can be closed after the cover opening limit switch 21 or the cover closing limit switch 22 is triggered.
The specific working process of the multi-channel peristaltic pump 100 capable of automatically releasing pressure in this embodiment is as follows:
When the cover opening motor 2 drives the screw rod 3 to rotate, the slide block 4 drives the positioning sheet 20 to move to the cover opening limit switch 21, meanwhile, the slide block 4 drives the second positioning block 6 to drag the connecting rod 7, so that the first positioning block 8 is pulled, the cover plate 9 is in an open state, the hose 10 passes through the hinge 18 of the cover plate 9 and the roller assembly, the bottom of the hose 10 is positioned in the longitudinal pressing groove 94, two clamps are sleeved on the hose 10, one clamp is clamped at the front clamping point 91, the other clamp is clamped at the rear clamping point 92, a certain pretightening force is arranged between the clamp and the hose 10, the hose 10 can be prevented from sliding along the length direction of the longitudinal pressing groove 94 on the cover plate 9, the steps are repeated, the cover opening motor 2 is driven to drive the screw rod 3 to rotate, the slide block 4 drives the second positioning block 6 and the positioning sheet 20 to move to the position of the cover opening limit switch 22, at the moment, the connecting rod 7 is tightly attached to the first backrest 81 and the second backrest 61, and the connecting rod 7 tightly presses the cover plate 9, and the hose 10 is fixed between the cover plate 9 and the roller assembly. When the rotation motor 11 rotates to drive the driving wheel gear to rotate, the driving belt 19 drives the driven wheel to rotate, so that the roller 14 is driven to rotate, meanwhile, the rollers 16 rotate and revolve around the roller 14, each roller 16 intermittently presses the hose 10, vacuum is generated when the hose 10 is restored to the shape, and liquid is sucked into the tube. Because of the front clamping point and the rear clamping point, the hose 10 is fixed and cannot move along with the peristaltic pump, and meanwhile, the hose 10 is tightly attached to the roller 16 by the extrusion arc;
after the use is stopped, the motor 2 of uncapping drives the lead screw 3 to rotate, and the slider 4 drives the spacer 20 to remove to uncapping limit switch 21, and the slider 4 drives the connecting rod 7 of second locating piece 6 drag simultaneously to pulling first locating piece 8, making apron 9 be in the open state, thereby realizing hose 10 pressure release.
In the description of the present invention, it should be noted that the terms "top," "bottom," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principles and embodiments of the present invention have been described in detail in this application, the above examples are provided to facilitate understanding of the method of the present invention and its core ideas, and modifications may be made by those skilled in the art in light of the present teachings, both in the detailed description and the application scope. In view of the foregoing, this description should not be construed as limiting the invention.