CN117249073A - Adjustable extrusion peristaltic pump - Google Patents

Abstract

The embodiments of the specification disclose an adjustable squeeze peristaltic pump comprising: the hose pressing device comprises a shell, a transmission part, a working pressing block, a limiting plate and a stop valve, wherein the transmission part is arranged in the shell, the working pressing block, the limiting plate and the stop valve are arranged on a top plate of the shell, the working pressing block is movably connected with the shell, a hose is placed between the working pressing block and the limiting plate during working, and the transmission part drives the working pressing block to reciprocate along the transverse direction of the hose so as to squeeze the hose; the stop valves are arranged near two ends of the hose; the limiting plate can adjust the extruded length of the hose. The limiting plate provided by the scheme can be used for adjusting different transmission flows of the same pipe on line, and realizing real-time adjustment of the transmission flows on the premise of not changing the pipe and the pump.

Description

Adjustable extrusion peristaltic pump

Technical Field

The application relates to the technical field of peristaltic pumps, in particular to an adjustable extrusion peristaltic pump.

Background

Peristaltic pumps are like a peristaltic pump which clamps a fluid-filled hose with fingers, and the peristaltic pump is commonly used in the market in which a roller rotates to squeeze the hose to convey the fluid as the fingers slide forward in the tube, and the roller replaces the fingers. Fluid is pumped by alternately squeezing and releasing the flexible delivery hose of the pump.

The peristaltic pump is generally used for quantitatively conveying liquid, if the flow is required to be regulated, the peristaltic pump can be realized only by replacing hoses with different specifications or replacing the peristaltic pump, the online regulation can not be realized, and the operation is quite inconvenient.

Disclosure of Invention

In order to solve the above technical problems, the embodiments of the present specification are implemented as follows:

an embodiment of the present disclosure provides an adjustable squeeze peristaltic pump, comprising: the hose pressing device comprises a shell, a transmission part, a working pressing block, a limiting plate and a stop valve, wherein the transmission part is arranged in the shell, the working pressing block, the limiting plate and the stop valve are arranged on a top plate of the shell, the working pressing block is movably connected with the shell, a hose is placed between the working pressing block and the limiting plate during working, and the transmission part drives the working pressing block to reciprocate along the transverse direction of the hose so as to squeeze the hose; the stop valves are arranged near two ends of the hose;

the limiting plate can adjust the extruded length of the hose.

In one or more embodiments, the limiting plate includes: the device comprises a fixed seat, a moving block, an adjusting knob and a locking knob;

the movable block is connected with the fixed seat through a rack, the movable block is provided with an adjusting knob and a locking knob, a gear is arranged on the adjusting knob, the rack is meshed with the gear for transmission, the adjusting knob is used for adjusting the position of the movable block, and the locking knob is used for locking the adjusting knob.

In one or more embodiments, the regulated extrusion peristaltic pump further comprises: the device comprises a position adjusting mechanism, a sliding plate and a sliding rail;

the sliding plate is connected with the sliding rail through the sliding block, the sliding rail is fixed on the top plate of the shell, the limiting plate is arranged on the sliding plate, the sliding rail is perpendicular to the direction of the hose, and the position adjusting mechanism can adjust the sliding plate to slide along the sliding rail.

In one or more embodiments, the position adjustment mechanism includes: the adjusting nut, the adjusting bolt and the locking screw;

the adjusting nut is fixed on the top plate of the shell, the adjusting bolt penetrates through the adjusting nut and then is connected with the sliding plate, and the locking screw is arranged on the adjusting nut and used for locking the adjusting bolt.

In one or more embodiments, the sliding plate and the top plate are provided with openings at positions corresponding to the working press block, and the openings are larger than the working press block in size.

In one or more embodiments, the shut-off valve includes an inlet shut-off valve and an outlet shut-off valve that are in linkage.

In one or more embodiments, the transmission component is a camshaft, and the cams of the camshaft are shaped differently.

In one or more embodiments, the stop valve includes a movable block and a fixed block, the fixed block is fixed on the top plate of the housing, and the movable block is driven by the transmission component to reciprocate along the direction of the fixed block.

In one or more embodiments, the fixed block includes a valve seat, a valve body, a button, a locking pin, and a spring;

the valve body is arranged inside the valve seat, the button is arranged on the valve body, the locking pin and the spring are arranged inside the valve body, the locking pin is arranged below the button, when the valve body works, the valve body is close to the front limiting plate of the valve seat, the locking pin is inserted into the pin hole of the valve seat, after the button is pressed down, the locking pin is retracted, and the valve body moves to the rear limiting plate of the valve seat under the action of the spring.

In one or more embodiments, the shape of the valve body near one end of the movable block is a tip protrusion, or the shape of the movable block near one end of the valve body is a tip protrusion.

In one or more embodiments, further comprising: and the pipe clamp is arranged at the outer side of the stop valve and used for fixing the hose.

In one or more embodiments, the pipe clamp includes: a fixed clip, a movable clip and a V-shaped reed; the fixing clamp is fixed on the shell; the fixed clamp is movably connected with the movable clamp through a pin shaft, one end of the V-shaped reed is fixed on the fixed clamp, and the other end of the V-shaped reed is fixed on the movable clamp.

In one or more embodiments, the working press block or the movable block is connected with a linear shaft through a guide seat and a linear bearing, the linear shaft is connected with a side plate of the shell, the linear shaft is arranged in parallel with the top plate, the guide seat and the linear shaft are arranged inside the shell, and a return spring is arranged between the linear shaft and the shell.

In one or more embodiments, the working press blocks are arranged in multiple groups, and multiple groups of working press blocks are arranged in parallel along the direction of the hose.

In one or more embodiments, the stop valve includes a movable block and a fixed block, the fixed block is fixed on the sliding plate, and the movable block reciprocates in a direction of the fixed block under the drive of the transmission component.

The above-mentioned at least one technical scheme that this description embodiment adopted can reach following beneficial effect:

the limiting plate provided by the scheme can be used for adjusting different transmission flows of the same pipe on line, and realizing real-time adjustment of the transmission flows on the premise of not changing the pipe and the pump.

The position adjusting mechanism provided by the scheme can complete on-line adjustment of the pipe pressing gap to adapt to hoses with different pipe diameters and different wall thicknesses, and any part is not required to be opened or disassembled.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of an extrusion peristaltic pump with adjustable flow rate according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the internal structure of the housing of FIG. 1 with portions broken away;

FIG. 3 is a schematic diagram of a specific structure of a limiting plate;

FIG. 4 is a schematic overall structure of a single-channel peristaltic extrusion pump with a tube clamp;

FIG. 5 is a schematic illustration of a specific construction of a pipe clamp;

FIG. 6 is a schematic diagram of the overall structure of an extrusion peristaltic pump with adjustable tube pressing gap (multi-channel);

FIG. 7 is a schematic view of a portion of the structure of FIG. 6;

FIG. 8 is a schematic structural view of the inlet shutoff valve fixed block;

FIG. 9 is a partial structural cross-sectional view of the inlet shutoff valve mounting block;

FIG. 10 is a cross-sectional view of the inlet shutoff valve mounting block;

reference numerals: 1. a driving motor; 2. an inlet stop valve fixed block; 3. an inlet stop valve movable block; 4. a limiting plate; 5. working pressing blocks; 6. an outlet stop valve fixing block; 7. an outlet stop valve movable block; 8. a pipe clamp; 9. a hose; 10. a housing; 11. a return spring; 12. a linear shaft; 13. a linear shaft mounting seat; 14. a cam shaft; 15. a guide seat; 16. a top plate; 21. a valve seat; 22. a rear limiting plate; 23. a valve body; 24. a button; 25. a front limiting plate; 26. a locking pin; 27. a spring; 32. a sliding plate; 35. a clamping plate; 36. a slide rail; 37. adjusting the nut; 38. adjusting a bolt; 39. a locking screw; 41. a fixing seat; 42. a rack; 43. a moving block; 44. an adjustment knob; 45. a locking button; 81. a fixing clamp; 82. a movable clamp; 83. a pin shaft; 84. v-shaped reed.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.

Example 1

As shown in fig. 1, the adjustable extrusion peristaltic pump provided in this scheme includes: the device comprises a driving motor 1, an inlet stop valve, a limiting plate 4, a working press block 5, an outlet stop valve, a hose 9, a shell 10 and a transmission part; the inlet stop valve comprises an inlet stop valve fixed block 2 and an inlet stop valve movable block 3, and the outlet stop valve comprises an outlet stop valve fixed block 6 and an outlet stop valve movable block 7.

The inlet stop valve, the limiting plate 4, the working pressing block 5, the outlet stop valve and the hose 9 are arranged on a top plate (not shown in fig. 1) of the shell 10, the inlet stop valve fixing block 2, the limiting plate 4, the outlet stop valve fixing block 6 and the top plate are fixedly connected, and the working pressing block 5, the inlet stop valve moving block 3 and the outlet stop valve moving block 7 are movably connected with the top plate. The transmission part is arranged in the shell 10 and is used for driving the working press block 5, the inlet stop valve movable block 3 and the outlet stop valve movable block 7 to do reciprocating motion.

As shown in fig. 2, the transmission part is a cam shaft 14, the driving motor 1 drives the cam shaft 14 to rotate, the guide seat 15 reciprocates along the horizontal direction under the action of the cam, the guide seat 15 is arranged into three groups, and the inlet stop valve movable block 3, the working press block 5 and the outlet stop valve movable block 7 are respectively installed. The guide seat 15 moves linearly along the linear shaft 12 through a linear bearing, and can return rapidly under the action of the return spring 11. The linear shaft 12 is fixed to the side plate of the housing 10 by two-end linear shaft mounting seats 13.

The extrusion peristaltic pump that this scheme provided is for the horizontal extrusion to the extrusion direction of hose, need not to open the limiting plate and can directly load and unload the hose, increases and decreases the passageway number at will as required (as shown in fig. 4).

The limiting plate provided by the scheme can adjust the extruded length of the hose, so that the purpose of on-line flow regulation is achieved.

In a specific embodiment, as shown in fig. 3, the limiting plate 4 includes: the hose pressing device comprises a fixed seat 41, a moving block 43, an adjusting knob 44 and a locking knob 45, wherein the moving block 43 is connected with the fixed seat 41 through a rack 42, the adjusting knob 44 and the locking knob 45 are arranged on the moving block 43, a gear is arranged on the adjusting knob 44, and when the adjusting knob 44 is rotated, the rack 42 is in meshed transmission with the gear, so that the moving block 43 moves and is matched with a working pressing block 5 to change the pressing length of the hose. The squeeze length of the hose is determined by the overlap length between the working block 5 and the moving block 43, thereby adjusting the flow rate. After the flow rate adjustment is completed, the adjustment knob 44 is locked by the lock knob 45.

The distance of movement of the moving block 43 can also be identified in order to achieve a visual adjustment of the flow.

Example two

In order to better secure the hose, preventing it from slipping off when the shut-off valve is released, the solution is also provided with a pipe clamp 8 (as shown in fig. 4 and 6), which is arranged outside the shut-off valve, secured to the top plate 16 of the housing 10 for securing the hose. It should be noted that the tube clamp 8 may be provided on a single-channel peristaltic pump as in fig. 4, or on a multi-channel peristaltic pump as in fig. 6.

Optionally, in order to adapt to hoses with different sizes, the pipe clamp can be configured to be adaptive to the pipe diameter of the hose. Specifically, as shown in fig. 5, the pipe clamp 8 includes: a fixed clip 81, a movable clip 82 and a V-shaped reed 84. Wherein, the fixing clip 81 is fixed on the casing 10, the fixing clip 81 is detachably connected with the casing 10, specifically, a through hole can be arranged on the fixing clip 81, and the fixing clip 81 and the casing 10 are fixed by a screw.

To achieve the adaptability adjustment, the fixed clip 81 and the movable clip 82 may be movably connected by a pin 83, and thus, the fixed clip 81 and the movable clip 82 may be relatively rotated. In order to fix the hose, the same side ends of the fixed clip 81 and the movable clip 82 are connected by a V-shaped spring 84, i.e., one end of the V-shaped spring 84 is fixed on the fixed clip 81, and the other end of the V-shaped spring 84 is fixed on the movable clip 82. The spring action of the V-shaped springs 84 ensures a reliable fixing of the hose clamp 8 to hoses of different diameters.

It should be noted that the end of the fixing clip 81 to which the housing 10 is fixed is the end near the V-spring 84.

In addition, in order to prevent the hose from slipping off, the top of one end of the fixed clip 81 and the movable clip 82 holding the hose may be provided in the shape of an inner protrusion to restrict the hose inside the fixed clip 81 and the movable clip 82.

Example III

The principle of the extrusion pump is that stop valves are respectively arranged on two sides of a working extrusion block, in order to ensure the transmission performance of a pump body and the tightness of a pipeline, two stop valves are matched with a working pressing block to alternatively extrude a hose to be completely closed in the working process, the pipe pressing quantity is insufficient and cannot be completely closed, the service life of the hose can be reduced and the hose can be damaged even if the pipe pressing quantity is excessive, and the extrusion pump can only use the hose with the same wall thickness.

In order to solve the problems, the scheme provides the pressure pipe gap adjusting device which can dynamically adjust the pressure pipe gap according to the needs so as to adapt to hoses with different wall thicknesses. According to this principle, the distance between the working press block and the limiting plate can be changed, so that the position of the working press block can be set to be adjustable, and the position of the limiting plate can also be set to be adjustable. However, it should be considered that, because the working press block reciprocates toward the limiting plate when in the working state, if the position of the working press block is made adjustable again, a certain problem exists, so that the position of the limiting plate can be adjusted by the scheme, namely, the position of the limiting plate can be adjusted when in the non-working state.

One possible implementation is shown in fig. 6 and 7, where the solution may further include, on the basis of the first embodiment (may not include the improved limiting plate in the first embodiment): a position adjustment mechanism, a slide plate 32 and a slide rail 36;

the sliding plate 32 is connected with the sliding rail 36 through a sliding block, the sliding rail 36 is fixed on the top plate 16 of the shell 10, the limiting plate 4 is arranged on the sliding plate 32, and the sliding rail 36 is perpendicular to the direction of the hose. The position adjusting mechanism is connected to the slide plate 32, and can adjust the slide plate 32 to slide along the slide rail 36. The stopper plate 4 and the like can move integrally with the slide plate 32. It should be noted that the positions of the sliding plate 32 and the top plate 16 corresponding to the working press 5 require openings so that the working press 5 passes out of the sliding plate 32 and the top plate 16, and in addition, since the sliding plate 32 also needs to be moved, the size of the openings is larger than the cross section of the working press 5.

In order that the slide plate 32 can slide stably to ensure that the position of the stopper plate 4 or the like does not change in other directions, the slide rail 36 may be provided in two or more.

Alternatively, other means may be employed to facilitate sliding movement of the slide plate 32, such as a rack and pinion fit, a wire rope, etc.

Specifically, as shown in fig. 7, the position adjustment mechanism includes: an adjustment nut 37, an adjustment bolt 38, and a locking screw 39;

an adjusting nut 37 is fixed to the top plate 16 of the housing 10 so as to be close to the edge of the top plate 16, an adjusting bolt 38 passes through the adjusting nut 37 and is connected to the slide plate 32 by a clamping plate 35, and a locking screw 39 is provided on the adjusting nut 37 for locking the adjusting bolt 38. After the clamping plate 35 is clamped, when the adjusting bolt 38 is rotated, the sliding plate 32 moves along the sliding rail 36 together with the limiting plate 4 and the like, so that the gap of the transformer is changed, and after the adjustment is completed, the locking and locking screw 39 is locked.

Example IV

As shown in fig. 8 to 10, taking an inlet shutoff valve as an example, the inlet shutoff valve fixing block 2 includes a valve seat 21, a valve body 23, a button 24, a lock pin 26, and a spring 27; wherein the valve seat 21 is a housing structure fixed to the top plate of the housing 10, and a part of the structure of the valve body 23 can be placed inside the valve seat 21. The middle of the valve body 23 is provided with a through hole for placing the locking pin 26, and correspondingly, the bottom of the valve seat 21 is also provided with a counter bore, and the locking pin 26 can be inserted. A button 24 is provided on the top of the valve body 23, and depressing the button 24 controls the position of the lock pin 26.

The spring 27 is disposed in a counter bore of the valve body 23 adjacent to the front limiting plate 25 of the valve seat 21, and can spring the valve body 23 back to the rear limiting plate 22 of the valve body 23 when the locking pin 26 is not inserted into the counter bore of the valve seat 21. For stable operation of the valve body 23, the spring 27 may be provided in a symmetrical structure.

When the valve is in operation, the valve body 23 is close to the front limiting plate 25 of the valve seat 21, the locking pin 26 is inserted into the counter bore of the valve seat 21, after the button 24 is pressed down, the locking pin 26 is retracted, the valve body 23 moves to the rear limiting plate 22 of the valve seat 21 under the action of the spring 27, and at the moment, the stop valve releases the hose, so that the hose can be conveniently assembled and disassembled; the valve body 23 is shifted to the front limiting plate 25, the locking pin 26 is inserted into the pin hole of the valve seat 21 to lock the valve body 23, and the stop valve is reset to the working state.

The extrusion pump transmission principle makes the extrusion pump have a stop valve to be in the closed state all the time when being in the shut-down state, and the hose is in the compressed state at this moment, and is very inconvenient when changing the dress hose. The quick pipe changing extrusion pump has the functions of quickly opening and resetting the stop valve, when the pipe is changed, the upper button of the stop valve for pressing the hose is pressed, the stop valve is sprung to release the hose, and at the moment, the hose can be easily taken down; after a new hose is placed to the pipe clamp, the stop valve is automatically locked when the stop valve is shifted to a working rotation state, and convenience and high efficiency are realized for replacement of the pipe of the extrusion pump, particularly replacement of the pipe of the multichannel extrusion pump.

In order to better stop the hose, the contact part of the valve body and the movable block can be made into a tip protrusion, specifically, the shape of the valve body close to one end of the movable block is a tip protrusion, or the shape of the movable block close to one end of the valve body is a tip protrusion, and of course, the valve body and the movable block are both made into tip structures, so that the effect is better.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such device. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a device comprising the element.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims (13)

1. An adjustable squeeze peristaltic pump comprising: the hose pressing device comprises a shell, a transmission part, a working pressing block, a limiting plate and a stop valve, wherein the transmission part is arranged in the shell, the working pressing block, the limiting plate and the stop valve are arranged on a top plate of the shell, the working pressing block is movably connected with the shell, a hose is placed between the working pressing block and the limiting plate during working, and the transmission part drives the working pressing block to reciprocate along the transverse direction of the hose so as to squeeze the hose; the stop valves are arranged near two ends of the hose;

the limiting plate can adjust the extruded length of the hose.

2. The adjustable peristaltic pump of claim 1 wherein the stop plate comprises: the device comprises a fixed seat, a moving block, an adjusting knob and a locking knob;

the movable block is connected with the fixed seat through a rack, the movable block is provided with an adjusting knob and a locking knob, a gear is arranged on the adjusting knob, the rack is meshed with the gear for transmission, the adjusting knob is used for adjusting the position of the movable block, and the locking knob is used for locking the adjusting knob.

3. The regulated extrusion peristaltic pump of claim 1, wherein the regulated extrusion peristaltic pump further comprises: the device comprises a position adjusting mechanism, a sliding plate and a sliding rail;

the sliding plate is connected with the sliding rail through the sliding block, the sliding rail is fixed on the top plate of the shell, the limiting plate is arranged on the sliding plate, the sliding rail is perpendicular to the direction of the hose, and the position adjusting mechanism can adjust the sliding plate to slide along the sliding rail.

4. An adjustable peristaltic pump as claimed in claim 3, wherein the position adjustment mechanism comprises: the adjusting nut, the adjusting bolt and the locking screw;

the adjusting nut is fixed on the top plate of the shell, the adjusting bolt penetrates through the adjusting nut and then is connected with the sliding plate, and the locking screw is arranged on the adjusting nut and used for locking the adjusting bolt.

5. An adjustable squeeze peristaltic pump as set forth in claim 3, wherein said slide plate and said top plate are each provided with openings corresponding to the location of said working press block, said openings being larger than the size of said working press block.

6. The regulated peristaltic squeeze pump of claim 1, wherein the shut-off valve comprises an inlet shut-off valve and an outlet shut-off valve, the inlet shut-off valve and the outlet shut-off valve being in linkage.

7. The adjustable peristaltic pump of claim 1 wherein the shut-off valve includes a movable block and a fixed block, the fixed block being secured to the top plate of the housing, the movable block being reciprocally movable in the direction of the fixed block under the drive of the drive member.

8. The adjustable peristaltic pump of claim 7 wherein the fixed block comprises a valve seat, a valve body, a button, a locking pin, and a spring;

the valve body is arranged inside the valve seat, the button is arranged on the valve body, the locking pin and the spring are arranged inside the valve body, the locking pin is arranged below the button, when the valve body works, the valve body is close to the front limiting plate of the valve seat, the locking pin is inserted into the pin hole of the valve seat, after the button is pressed down, the locking pin is retracted, and the valve body moves to the rear limiting plate of the valve seat under the action of the spring.

9. The regulated extrusion peristaltic pump of claim 1, further comprising: and the pipe clamp is arranged at the outer side of the stop valve and used for fixing the hose.

10. The adjustable squeeze peristaltic pump of claim 9 wherein the tube clamp comprises: a fixed clip, a movable clip and a V-shaped reed; the fixing clamp is fixed on the shell; the fixed clamp is movably connected with the movable clamp through a pin shaft, one end of the V-shaped reed is fixed on the fixed clamp, and the other end of the V-shaped reed is fixed on the movable clamp.

11. The adjustable extrusion peristaltic pump of claim 7 wherein the working block or the movable block is connected to a linear shaft by a guide block through a linear bearing, the linear shaft is connected to a side plate of the housing, the linear shaft is disposed parallel to the top plate, the guide block and the linear shaft are disposed inside the housing, and a return spring is disposed between the linear shaft and the housing.

12. The adjustable peristaltic pump as claimed in claim 1, wherein the working blocks are arranged in a plurality of groups, the plurality of groups of working blocks being arranged in parallel along the direction of the hose.

13. An adjustable peristaltic pump as claimed in claim 3, wherein the shut-off valve comprises a movable block and a fixed block, the fixed block being fixed to the sliding plate, the movable block being driven by the transmission member to reciprocate in the direction of the fixed block.