Double-roller radial continuous rotating peristaltic pump

Abstract

The utility model discloses a double-roller radial continuous rotating peristaltic pump. A driving mechanism, a rotating mechanism, a hose mechanism and a pipe pressing mechanism are arranged on a mounting bedplate; the hose mechanism comprises an elastic hose, a cam and a supporting plate, the supporting plate is connected with the bearing seat and the cam, the bearing seat is connected with the mounting table plate, and the elastic hose surrounds the periphery of the cam in the radial direction; the pipe pressing mechanism comprises rollers and a guide assembly, the guide assembly is connected with the rollers and the rotating mechanism, and the rollers are symmetrically arranged on the two sides of the elastic hose. The rotating mechanism is connected with the driving mechanism, the driving mechanism drives the rotating mechanism to rotate, the rotating mechanism drives the guide assembly to rotate, the idler wheel installed on the guide assembly circumferentially rotates in the radial direction and extrudes the elastic hose, and continuous metering and conveying of fluid are achieved. The peristaltic pump has the advantages of being compact in structure, high in reliability, low in abrasion loss of the inner wall of the hose and the like, and solves the problem that fluid is polluted due to the fact that the inner wall of the hose is seriously abraded and a large number of particles are generated in an existing peristaltic pump.

Description

Technical Field

[0001] The utility model belongs to the technical field of peristaltic pumps for fluid filling, and particularly relates to a double-roller radially continuous rotary peristaltic pump. Background Technique

[0002] A peristaltic pump is a liquid conveying device with controllable flow rate. The peristaltic pump uses a rotating roller to roll and press an elastic hose, and the fluid in the hose moves as the roller rotates, just like squeezing a hose with two fingers. As the fingers move, the liquid flows accordingly.

[0003] In the existing peristaltic pump, one side of the working hose is provided with a roller that can roll flexibly, and the other side is provided with a relatively fixed arc-shaped back plate. The flexible roller presses the hose against the back plate to achieve the purpose of peristaltically conveying fluid. However, there is a problem that the inner wall of the hose is easily worn.

[0004] In addition, the filling volume range of the existing peristaltic pump for a single filling is not wide, which has limitations. Currently, there are peristaltic pumps with different flow rate ranges for micro flow, small flow, medium flow, and large flow transmission on the market. There is a lack of a high-precision continuous filling peristaltic pump that is not limited by the flow rate range. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to solve the problems of serious wear of the inner wall of the hose in the existing peristaltic pump, generation of a large number of microparticles resulting in fluid contamination, and narrow filling range. The utility model provides a double-roller radially continuous rotary peristaltic pump with a compact structure, convenient disassembly and assembly, high reliability, low wear of the inner wall of the hose, high repeated filling accuracy, and a wide single filling flow rate range.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A double-roller radial continuous rotary peristaltic pump, comprising a mounting base plate, on which a driving mechanism, a rotating mechanism, a hose mechanism and a pipe pressing mechanism are provided; the hose mechanism includes an elastic hose, a cam and a support plate, the cam includes a thick-wall region and a thin-wall region, one end of the support plate is connected to a bearing seat, the bearing seat is connected to the mounting base plate, and the other end of the support plate is connected to the cam; the pipe pressing mechanism includes rollers and a guiding assembly, the guiding assembly is connected to the rotating mechanism, the rollers are connected to the guiding assembly, the elastic hose is fixedly wound around the outer periphery of the cam in the radial direction, and the rollers are symmetrically arranged on two opposite sides of the elastic hose; alternatively, the cam is arranged on the side of the roller, the elastic hose is fixedly wound around a supporting wheel in the radial direction, the supporting wheel is fixedly connected to the support plate, and the rollers are symmetrically arranged on two opposite sides of the elastic hose; the rotating mechanism is mounted on the bearing seat and connected to the output end of the driving mechanism, the driving mechanism drives the rotating mechanism to rotate, the rotating mechanism drives the guiding assembly to rotate, and the rollers mounted on the guiding assembly rotate in a circular motion in the radial direction. When the rollers rotate to the thick-wall region of the cam, the rollers extrude the elastic hose, and when the rollers rotate to the thin-wall region of the cam, the rollers release the elastic hose.

[0008] As a further improvement of the present utility model, the driving mechanism includes a driving component and an external PLC controller; the driving component is mounted on the mounting base plate, and the output end of the driving component is connected to the rotating mechanism; the driving component is electrically connected to the PLC controller, and the PLC controller controls the operation of the driving component.

[0009] As a further improvement of the present utility model, the rotating mechanism includes a rotating shaft, the output shaft of the driving component penetrates through the mounting base plate and the bearing seat and is connected to one end of the rotating shaft, the other end of the rotating shaft is connected to the guiding assembly, the bearing seat is nested on the outer periphery of the rotating shaft, and the bearing seat is located between the mounting base plate and the guiding assembly.

[0010] As a further improvement of the present utility model, one end of the bearing seat is fixedly connected to the mounting base plate, the other end of the bearing seat is detachably connected to an end cover, a first deep groove ball bearing and a second deep groove ball bearing are sequentially nested between the bearing seat and the rotating shaft, the first deep groove ball bearing is close to the output shaft of the driving component, a bushing is provided between the first deep groove ball bearing and the second deep groove ball bearing, and a shaft retaining ring is provided between the end of the first deep groove ball bearing and the end of the rotating shaft.

[0011] As a further improvement of the present utility model, the guiding assembly includes a left guiding block and a right guiding block with the same structure, the left guiding block and the right guiding block are symmetrically arranged on both sides of the rotating shaft, and the left guiding block and the right guiding block are each arranged on the rotating shaft in a group of two. Rollers are provided on both the left guiding block and the right guiding block, and the rollers are located on two opposite sides of the elastic hose to realize double-roller extrusion of the elastic hose.

[0012] As a further improvement of the present utility model, both the left guiding block and the right guiding block are detachably connected to the rotating shaft through screws, and cushion blocks are provided between the left guiding block and the rotating shaft and between the right guiding block and the rotating shaft; the roller is connected to the left guiding block through a roller shaft, and the roller shaft is locked and fixed to the left guiding block through a nut.

[0013] As a further improvement of the present utility model, a third deep groove ball bearing and a pin shaft are provided on the left guiding block. The third deep groove ball bearing is connected to the left guiding block through the pin shaft. The third deep groove ball bearing and the roller are respectively located on both sides of the left guiding block, and the third deep groove ball bearing is located in front of the roller. The third deep groove ball bearing rotates along the edge of the cam; a third deep groove ball bearing and a pin shaft are provided on the right guiding block. The third deep groove ball bearing is connected to the right guiding block through the pin shaft. The third deep groove ball bearing and the roller are respectively located on both sides of the right guiding block, and the third deep groove ball bearing is located in front of the roller. The third deep groove ball bearing rotates along the edge of the cam.

[0014] As a further improvement of the present utility model, both ends between the two left guiding blocks and both ends between the two right guiding blocks are connected through a tension spring, and the tension spring is close to the third deep groove ball bearing; alternatively, both ends between the two left guiding blocks and both ends between the two right guiding blocks are connected through a compression spring, and the compression spring is close to the third deep groove ball bearing.

[0015] As a further improvement of the present utility model, the hose mechanism further includes a first limiting block and a second limiting block. The first limiting block and the second limiting block are symmetrically arranged on both sides of the support plate to assist in clamping and positioning the input end and the output end of the elastic hose.

[0016] As a further improvement of the present utility model, the cam is of an annular structure, and the circumferential angle β of the thin-wall region of the cam is 80° ± 40°; the driving assembly adopts a stepping motor or a servo motor or a motor driving unit.

[0017] As a further improvement of the present utility model, there are two elastic hoses, and both ends of the two elastic hoses are respectively connected through a three-way joint. A plurality of groups of hose pressing mechanisms are alternately arranged on the rotating mechanism. The driving mechanism drives the rotating mechanism to rotate, the rotating mechanism drives the hose pressing mechanism to rotate, and the plurality of groups of hose pressing mechanisms alternately and staggeredly squeeze the two elastic hoses to achieve low-pulse fluid filling. Compared with the prior art, the advantages of the present utility model are as follows:

[0018] The double-roller radially continuous rotary peristaltic pump of the present utility model forms a compact peristaltic pump main body by arranging a driving mechanism, a rotating mechanism, a hose mechanism and a tube pressing mechanism on an installation platen. Specifically, a cam with inconsistent thickness in a local area is used to realize the radial installation and fixation of an elastic hose. The rollers are symmetrically arranged on opposite sides of the elastic hose, and the rollers are connected to the rotating mechanism through a guiding component. The rotating mechanism is connected to the output end of the driving mechanism. The driving mechanism drives the rotating mechanism to rotate, the rotating mechanism drives the guiding component to rotate, and the rollers installed on the guiding component rotate circumferentially in the radial direction. When the rollers rotate to the thick-wall area of the cam, the rollers extrude the elastic hose to achieve fluid metering and conveying. When the rollers rotate to the thin-wall area of the cam, the rollers release the elastic hose, and the elastic hose can elastically recover periodically. Moreover, since the two rollers rotate synchronously and radially to extrude the elastic hose, the shear of the filled liquid molecules and the wear of the hose can be minimized, avoiding the risk of fluid contamination caused by severe wear of the inner wall of the hose and generation of a large number of microparticles, effectively extending the service life of the pump tube. Since the initial position of the fluid filling rollers is the same each time, the repeated filling accuracy can be greatly improved. And as long as the wall thickness of the elastic hose is consistent, regardless of the inner diameter size of the hose, it can be directly installed on the device to implement fluid filling, achieving the purpose that the peristaltic pump is not restricted by the flow range for single transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic diagram of the main view structural principle of the double-roller radially continuous rotary peristaltic pump in a specific embodiment of the present utility model.

[0020] Figure 2 FIG. Figure 1 FIG. 2 is a schematic diagram of the left view structural principle of the double-roller radially continuous rotary peristaltic pump in FIG. 1.

[0021] Figure 3 FIG. Figure 1 FIG. 3 is a schematic diagram of the structural principle of the cross-section cut downward in the horizontal direction of the rotation center in FIG. 1.

[0022] Figure 4 FIG. Figure 1 FIG. 4 is a schematic diagram of the structural principle of the cross-section cut leftward in the vertical direction of the rotation center in FIG. 1.

[0023] Figure 5 FIG. 5 is a schematic diagram of the three-dimensional axonometric projection structural principle of the double-roller radially continuous rotary peristaltic pump in a specific embodiment of the present utility model.

[0024] Figure 6 FIG. 6 is a schematic diagram of the side view structural principle of the double-roller radially continuous rotary peristaltic pump in a specific embodiment 2 of the present utility model.

[0025] Figure 7This is a schematic diagram of the three-dimensional axonometric projection structure principle of a 2-roller radial continuous rotation peristaltic pump in a specific embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of the side view structure principle of a 3-roller radial continuous rotation peristaltic pump in a specific embodiment of the present invention.

[0027] Figure 9 This is a schematic diagram of the three-dimensional axonometric projection structure principle of a 3-roller radial continuous rotation peristaltic pump in a specific embodiment of the present invention.

[0028] Legend: 1. Bearing seat; 2. Shaft circlip; 3. First deep groove ball bearing; 4. Bushing; 5. Second deep groove ball bearing; 6. End cover; 7. Flexible hose; 8. Cam; 9. Screw; 10. Rotating shaft; 11. Roller; 12. Installation platen; 13. Driving assembly; 14. Roller shaft; 15. Left guide block; 16. Nut; 18. Third deep groove ball bearing; 19. Pin shaft; 20. Washer; 21. Split pin; 22. Tension spring; 23. Right guide block; 24. First limit block; 25. Support plate; 26. Second limit block; 27. Spacer block; 28. Compression spring; 29. Support wheel. Detailed implementation manners

[0029] The present invention will be further described below in conjunction with the accompanying drawings of the specification and specific preferred embodiments, but this does not limit the protection scope of the present invention.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "side", "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0032] Embodiment 1

[0033] AsFigures 1 to 5 As shown in the figure, the double-roller radial continuous rotation peristaltic pump of the present utility model includes a radially arranged mounting table plate 12, and a driving mechanism, a rotating mechanism, a hose mechanism, and a pipe pressing mechanism are provided on the mounting table plate 12. The hose mechanism includes an elastic hose 7, a cam 8, and a support plate 25. The cam includes a thick-wall region and a thin-wall region. The support plate 25 is arranged horizontally. One end of the support plate 25 is connected to a bearing seat 1, and the bearing seat 1 is connected to the mounting table plate 12. The other end of the support plate 25 is connected to the cam 8. The cam 8 is arranged radially. The mounting table plate 12 and the cam 8 are parallel to each other. The elastic hose 7 is radially wound and fixed around the outer periphery of the cam 8. The pipe pressing mechanism includes rollers 11 and a guiding assembly. The guiding assembly is connected to the rotating mechanism, and the rollers 11 are connected to the guiding assembly, and the rollers 11 are symmetrically arranged on opposite sides of the elastic hose 7. The rotating mechanism is mounted on the bearing seat 1 and is connected to the output end of the driving mechanism. The driving mechanism drives the rotating mechanism to rotate. The rotating mechanism drives the guiding assembly to rotate. The rollers 11 mounted on the guiding assembly rotate in a circular motion radially. When the rollers 11 rotate to the thick-wall region of the cam 8, the rollers 11 squeeze the elastic hose 7. When the rollers 11 rotate to the thin-wall region of the cam 8, the rollers 11 release the elastic hose 7.

[0034] In this embodiment, by providing a driving mechanism, a rotating mechanism, a hose mechanism, and a pipe pressing mechanism on the mounting table plate 12, a peristaltic pump main body with a compact structure is formed. Specifically, the elastic hose 7 is radially installed and fixed by using a cam 8 with inconsistent thickness in a local area. The rollers 11 are symmetrically arranged on opposite sides of the elastic hose 7, and the rollers 11 are connected to the rotating mechanism through the guiding assembly. The rotating mechanism is connected to the output end of the driving mechanism. The driving mechanism drives the rotating mechanism to rotate. The rotating mechanism drives the guiding assembly to rotate. The rollers 11 mounted on the guiding assembly rotate in a circular motion radially. When the rollers 11 rotate to the thick-wall region of the cam 8, the rollers 11 squeeze the elastic hose 7 to achieve fluid metering and conveying. When the rollers 11 rotate to the thin-wall region of the cam 8, the rollers 11 release the elastic hose 7. The elastic hose 7 can elastically recover periodically. Also, because the double rollers rotate and squeeze the elastic hose synchronously in the radial direction, the shear of the filled liquid molecules and the wear of the hose can be minimized, avoiding the risk of fluid contamination caused by severe wear of the inner wall of the hose and generation of a large number of microparticles, effectively extending the service life of the pump tube. Since the initial position of the fluid filling roller is the same each time, the repeated filling accuracy can be greatly improved. Moreover, as long as the wall thickness of the elastic hose 7 is consistent, regardless of the inner diameter size of the hose, it can be directly installed on the equipment to implement fluid filling, achieving the purpose that the peristaltic pump is not restricted by the flow range for single transmission.

[0035] As Figure 5As shown in the figure, in this embodiment, the driving mechanism includes a driving component 13 and an external PLC controller (not shown in the figure). The driving component 13 is installed on the mounting base plate 12, and the output end of the driving component 13 is connected to the rotating mechanism; the driving component and the PLC controller are electrically connected, and the PLC controller controls the operation of the driving component 13. The start / stop, forward / reverse rotation, rotational speed, and flow calibration of the driving component are all completed by controlling the driving component 13 through the PLC control system and program, which has the advantages of simple operation and precise control. Further, the driving component 13 can specifically adopt motors or driving units such as stepping motors or servo motors, as long as it can drive the rotating mechanism to rotate smoothly and realize the smooth extrusion of the elastic hose 7 by the roller 11.

[0036] As Figure 2 , Figure 3 and Figure 4 shown, the rotating mechanism includes a rotating shaft 10. The output shaft of the driving component 13 passes through the mounting base plate 12 and is connected to one end of the rotating shaft 10. The output shaft of the driving component 13 is nested inside the end of the rotating shaft 10. The other end of the rotating shaft 10 is connected to the guiding component. The bearing seat 1 is nested on the outer periphery of the rotating shaft 10, and the bearing seat 1 is located between the mounting base plate 12 and the guiding component.

[0037] As Figure 3 and Figure 4 shown, one end of the bearing seat 1 is fixedly connected to the mounting base plate 12, and the other end of the bearing seat 1 is detachably connected to the end cover 6. A first deep groove ball bearing 3 and a second deep groove ball bearing 5 are sequentially nested between the bearing seat 1 and the rotating shaft 10. The first deep groove ball bearing 3 is close to the output shaft of the driving component 13, and the second deep groove ball bearing 5 is close to the guiding component. A bushing 4 is provided between the first deep groove ball bearing 3 and the second deep groove ball bearing 5. By setting the deep groove ball bearings and the bushing 4, the smoothness of transmission is improved. An axial circlip 2 is provided between the end of the first deep groove ball bearing 3 and the end of the rotating shaft 10 to prevent the first deep groove ball bearing 3 from slipping off the outside of the rotating shaft 10.

[0038] As Figure 1 , Figure 2 and Figure 5 shown, the guiding component includes left guiding blocks 15 and right guiding blocks 23 with the same structure. The left guiding blocks 15 and the right guiding blocks 23 are symmetrically arranged on both sides of the rotating shaft 10, and the left guiding blocks 15 and the right guiding blocks 23 are each set on the rotating shaft 10 in groups of two. Rollers 11 are provided on both the left guiding blocks 15 and the right guiding blocks 23. The rollers 11 are located on opposite sides of the elastic hose 7, that is, two sets of double rollers are provided on the rotating shaft 10 to realize the extrusion of the elastic hose 7 by the double rollers and complete the continuous metering and conveying of the fluid.

[0039] As Figure 1As shown, both the left guide block 15 and the right guide block 23 are detachably connected to the rotating shaft 10 through the screw 9, and cushion blocks 27 are provided between the left guide block 15 and the rotating shaft 10 and between the right guide block 23 and the rotating shaft 10 to provide flexible buffering and avoid wear caused by direct rigid connection between the guide block and the rotating shaft 10. The roller 11 is connected to the left guide block 15 through the roller shaft 14. The roller shaft 14 sequentially passes through the roller 11 and the left guide block 15, and the roller shaft 14 is locked and fixed to the left guide block 15 through the nut 16, that is, the detachable connection and fixation between the roller 11 and the left guide block 15 are realized. The connection between the roller 11 and the right guide block 23 is also based on the same principle.

[0040] As Figure 1 shown, a third deep groove ball bearing 18 and a pin shaft 19 are provided on the left guide block 15. The third deep groove ball bearing 18 is connected to the left guide block 15 through the pin shaft 19. The pin shaft 19 sequentially passes through the third deep groove ball bearing 18 and the left guide block 15 and is locked and fixed to the left guide block 15 through the split pin 21. A washer 20 is provided between the third deep groove ball bearing 18 and the left guide block 15 to provide flexible buffering and ensure the smooth rotation of the third deep groove ball bearing 18. The third deep groove ball bearing 18 and the roller 11 are respectively located on both sides of the left guide block 15. When the peristaltic pump operates, the third deep groove ball bearing 18 is located in front of the roller 11, and the third deep groove ball bearing 18 rotates along the edge of the cam 8 to assist in positioning the left guide block 15 and improve the accuracy of the roller 11 squeezing the elastic hose 7. A third deep groove ball bearing 18 and a pin shaft 19 are provided on the right guide block 23. The third deep groove ball bearing 18 is connected to the right guide block 23 through the pin shaft 19. The pin shaft 19 sequentially passes through the third deep groove ball bearing 18 and the right guide block 23 and is locked and fixed to the left guide block 15 through the split pin 21. A washer 20 is provided between the third deep groove ball bearing 18 and the right guide block 23. The third deep groove ball bearing 18 and the roller 11 are respectively located on both sides of the right guide block 23. When the peristaltic pump operates, the third deep groove ball bearing 18 rotates along the edge of the cam 8 to assist in positioning the right guide block 23 and improve the accuracy of the roller 11 squeezing the elastic hose 7.

[0041] During the operation of the peristaltic pump, under the action of the tension spring 22, the third deep groove ball bearing 18 squeezes the cam 8 or disengages from the extrusion of the cam 8. The rotating shaft 10 drives the left guide block 15 and the right guide block 23 to rotate around the screw 9 as the rotation center, realizing the radial rotation extrusion or disengagement of the double rollers from the elastic hose 7.

[0042] As Figure 1 shown, both ends between the two left guide blocks 15 and both ends between the two right guide blocks 23 are connected through the tension spring 22, and the tension spring 22 is close to the third deep groove ball bearing 18.

[0043] As Figure 1 andFigure 5 As shown in the figure, the hose mechanism further includes a first limiting block 24 and a second limiting block 26. The first limiting block 24 and the second limiting block 26 are symmetrically arranged on both sides of the support plate 25 to assist in the clamping and positioning of the input end and the output end of the elastic hose 7. Through the combined action of the support plate 25, the first limiting block 24, the second limiting block 26 and the cam 8, the positioning and clamping fixation of the elastic hose 7 are realized, and the movement during the filling process is prevented.

[0044] As Figure 1 shown in the figure, in this embodiment, the cam 8 is of a circular ring structure, and the circumferential angle β of the thin-wall region of the cam 8 is about 80°. Then the circumferential angle of the thin-wall region of the cam 8 is about 280°. The initial position and the end position of the elastic hose 7 being squeezed each time are the same, and high-precision continuous filling with the same initial position can be realized, greatly improving the repeated filling accuracy of the peristaltic pump. Moreover, as long as the elastic hose 7 has the same wall thickness, it can be installed on the equipment for filling, and filling with a wide range of flow rates can be realized.

[0045] The working principle of the peristaltic pump in this embodiment is as follows:

[0046] During each filling, the rotating shaft 10 rotates to drive the left guide block 15 and the right guide block 23 to rotate. When the third deep groove ball bearing 18 installed on the left guide block 15 and the right guide block 23 rotates and reaches the thick-wall region of the circumferential section of about 280° on the cam 8, it comes into extrusion contact with the cam 8; when the third deep groove ball bearing 18 rotates and reaches the thin-wall region of the circumferential section of about 80° on the cam 8, under the action of the tension spring 22, the third deep groove ball bearing 18 disengages from the contact with the cam 8. When the third deep groove ball bearing 18 squeezes the cam 8, the left guide block 15 and the right guide block 23 rotate around the screw 9 as the rotation axis center and drive the double rollers to rotate and squeeze the elastic hose 7 from both sides; when the third deep groove ball bearing 18 disengages from the extrusion of the cam 8, the left guide block 15 and the right guide block 23 rotate around the screw 9 under the pulling force of the tension spring 22 and drive the double rollers to disengage from the extrusion of the elastic hose 7 from both sides. Through the rotational extrusion of the two groups of double rollers, continuous filling of the fluid is realized.

[0047] In this embodiment, on both sides of the elastic hose 7, rollers 11 that can roll flexibly are symmetrically arranged. The double rollers rotate continuously in the radial direction, and the purpose of squeezing or disengaging from the elastic hose 7 is achieved through the change in the thickness of the cam 8 in the circumferential direction. Moreover, there is no relative movement between the rollers 11 and the elastic hose 7, which can greatly reduce the wear of the inner wall of the elastic hose 7; as long as the wall thickness of the clamped elastic hose 7 is the same, regardless of the inner diameter size of the elastic hose 7, it can be directly installed on the equipment to implement fluid filling, achieving the purpose that the fluid filling of the peristaltic pump is not restricted by the flow rate range.

[0048] Embodiment 2

[0049] AsFigure 6 and Figure 7 As shown, the double-roller radially continuously rotating peristaltic pump of the present utility model has a similar structural arrangement and working principle to the double-roller radially continuously rotating peristaltic pump in Embodiment 1. The main differences are as follows:

[0050] Two cams 8 are respectively arranged on the outer sides of the two rollers 11. The elastic hose 7 is fixedly wound around the annular support wheel 29 in the radial direction. The support wheel 29 is fixedly connected to the support plate 25. The rollers 11 are symmetrically arranged on the opposite sides of the elastic hose 7. At this time, the cams 8 and the elastic hose 7 are respectively arranged on the two sides of the roller 11.

[0051] Furthermore, when the cams 8 are arranged on the outer sides of the rollers 11, the ends between the two left guide blocks 15 and the ends between the two right guide blocks 23 are both connected by compression springs 28, and the compression springs 28 are close to the third deep groove ball bearings 18. During the material filling process, when the roller 11 rotates to the thick-wall area of the cam 8, the compression spring 28 is in a compressed state, and the roller 11 rotates while squeezing the elastic hose 7; when the roller 11 rotates to the thin-wall area of the cam 8, the compression spring 28 is in the original state, and the roller 11 rotates while loosening the elastic hose 7.

[0052] Embodiment 3

[0053] As Figure 8 and Figure 9 shown, the double-roller radially continuously rotating peristaltic pump of the present utility model has a similar structural arrangement and working principle to the double-roller radially continuously rotating peristaltic pump in Embodiment 1. The main differences are as follows:

[0054] The elastic hoses 7 are two arranged side by side, and the two ends of the two elastic hoses 7 are respectively connected by three-way joints (not shown in the figure) to achieve confluence and diversion. Multiple groups of hose pressing mechanisms are alternately arranged on the rotating mechanism. The rotating mechanism is driven to rotate by the driving mechanism, and the rotating mechanism drives the hose pressing mechanisms to rotate. Multiple groups of hose pressing mechanisms alternately and staggeredly squeeze the two elastic hoses 7 to achieve low-pulse fluid filling.

[0055] Furthermore, as Figure 8 shown, two cams 8 are arranged side by side in the front and back on the rotating shaft 10. Each cam 8 is wound with an elastic hose 7 around it. Correspondingly, multiple groups of rollers 11 are arranged side by side in the front and back on the rotating shaft 10, and the roller groups on the outer sides of the two elastic hoses 7 are alternately installed. During the operation of the peristaltic pump, when the rollers 11 on both sides of one of the elastic hoses 7 squeeze the elastic hose 7 and rotate and displace a certain distance, the rollers 11 on both sides of the other elastic hose 7 start to squeeze the elastic hose 7 to achieve alternately and staggeredly squeezing the two elastic hoses 7.

[0056] Although the present utility model is disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present utility model by using the methods and technical contents disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the spirit and technical solution of the present utility model. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the scope of protection of the technical solution of the present utility model.

Claims

1. A double-roller radial continuous rotating peristaltic pump, characterized in that: The invention comprises a mounting plate (12), on which a driving mechanism, a rotating mechanism, a hose mechanism and a pipe pressing mechanism are arranged; the hose mechanism comprises an elastic hose (7), a cam (8) and a support plate (25), the cam (8) comprises a thick-walled area and a thin-walled area, one end of the support plate (25) is connected to a bearing seat (1), the bearing seat (1) is connected to the mounting plate (12), and the other end of the support plate (25) is connected to the cam (8); the pipe pressing mechanism comprises a roller (11) and a guide assembly, the guide assembly is connected to the rotating mechanism, the roller (11) is connected to the guide assembly, the elastic hose (7) is radially surrounded and fixed on the outer periphery of the cam (8), and the rollers (11) are symmetrically arranged on two opposite sides of the elastic hose (7). ; or, the cam (8) is arranged on the side of the roller (11), the elastic hose (7) is fixed on the support wheel (29) in the radial direction, the support wheel (29) is connected and fixed to the support plate (25), and the rollers (11) are symmetrically arranged on the opposite sides of the elastic hose (7); the rotating mechanism is installed on the bearing seat (1) and connected to the output end of the driving mechanism, the rotating mechanism is driven to rotate by the driving mechanism, and the rotating mechanism drives the guide assembly to rotate, and the roller (11) installed on the guide assembly rotates in a circular manner in the radial direction, when the roller (11) rotates to the thick-walled area of ​​the cam (8), the roller (11) squeezes the elastic hose (7), and when the roller (11) rotates to the thin-walled area of ​​the cam (8), the roller (11) releases the elastic hose (7).

2. The double-roller radial continuous rotation peristaltic pump according to claim 1, characterized in that: The driving mechanism comprises a driving component (13) and an external PLC controller; the driving component (13) is mounted on a mounting plate (12), and an output end of the driving component (13) is connected to a rotating mechanism; the driving component (13) is electrically connected to the PLC controller, and the PLC controller controls the operation of the driving component (13).

3. The double-roller radial continuous rotation peristaltic pump according to claim 2, characterized in that: The rotating mechanism comprises a rotating shaft (10), an output shaft of a driving assembly (13) passes through a mounting plate (12) and a bearing seat (1) and is connected to one end of the rotating shaft (10), the other end of the rotating shaft (10) is connected to a guide assembly, the bearing seat (1) is nested in the outer periphery of the rotating shaft (10), and the bearing seat (1) is located between the mounting plate (12) and the guide assembly.

4. The double-roller radial continuous rotation peristaltic pump according to claim 3, characterized in that: One end of the bearing seat (1) is connected and fixed to the mounting table (12), and the other end of the bearing seat (1) is detachably connected to the end cover (6). A first deep groove ball bearing (3) and a second deep groove ball bearing (5) are nested in sequence between the bearing seat (1) and the rotating shaft (10). The first deep groove ball bearing (3) is close to the output shaft of the driving component (13), and the first deep groove ball bearing (3) and the second deep groove ball bearing (5) are provided with bushings (4). An elastic retaining ring (2) for the shaft is provided between the end of the first deep groove ball bearing (3) and the end of the rotating shaft (10).

5. The double-roller radial continuous rotation peristaltic pump according to claim 4, characterized in that: The guide assembly comprises a left guide block (15) and a right guide block (23) of the same structure. The left guide block (15) and the right guide block (23) are symmetrically arranged on both sides of the rotating shaft (10), and the left guide block (15) and the right guide block (23) are arranged on the rotating shaft (10) in pairs. The left guide block (15) and the right guide block (23) are both provided with rollers (11), and the rollers (11) are located on opposite sides of the elastic hose (7) to realize double roller extrusion of the elastic hose (7).

6. The double-roller radial continuous rotation peristaltic pump according to claim 5, characterized in that: The left guide block (15) and the right guide block (23) are both detachably connected to the rotating shaft (10) via a screw rod (9), and a cushion block (27) is provided between the left guide block (15) and the rotating shaft (10), and between the right guide block (23) and the rotating shaft (10); the roller (11) is connected to the left guide block (15) via a roller shaft (14), and the roller shaft (14) is locked and fixed to the left guide block (15) via a nut (16).

7. The double-roller radial continuous rotation peristaltic pump according to claim 5, characterized in that: The left guide block (15) is provided with a third deep groove ball bearing (18) and a pin (19), the third deep groove ball bearing (18) is connected to the left guide block (15) through the pin (19), the third deep groove ball bearing (18) and the roller (11) are respectively located on both sides of the left guide block (15), and the third deep groove ball bearing (18) is located in front of the roller (11), and the third deep groove ball bearing (18) rotates along the edge of the cam (8); the right guide block (23) is provided with a third deep groove ball bearing (18) and a pin (19), the third deep groove ball bearing (18) is connected to the left guide block (15) through the pin (19), the third deep groove ball bearing (18) and the roller (11) are respectively located on both sides of the left guide block (15), and the third deep groove ball bearing (18) is located in front of the roller (11), and the third deep groove ball bearing (18) rotates along the edge of the cam (8); The third deep groove ball bearing (18) is connected to the right guide block (23) through a pin shaft (19), the third deep groove ball bearing (18) and the roller (11) are respectively located on both sides of the right guide block (23), and the third deep groove ball bearing (18) is located in front of the roller (11), and the third deep groove ball bearing (18) rotates along the edge of the cam (8); the ends of the two left guide blocks (15) and the ends of the two right guide blocks (23) are connected through a tension spring (22), and the tension spring (22) is close to the third deep groove ball bearing (18); Alternatively, the ends of the two left guide blocks (15) and the ends of the two right guide blocks (23) are connected via a compression spring (28), and the compression spring (28) is close to the third deep groove ball bearing (18).

8. The double-roller radial continuous rotation peristaltic pump according to any one of claims 1 to 7, characterized in that: The hose mechanism further comprises a first limit block (24) and a second limit block (26), wherein the first limit block (24) and the second limit block (26) are symmetrically arranged on both sides of the support plate (25) to assist in clamping and positioning the input end and the output end of the elastic hose (7).

9. The double-roller radial continuous rotation peristaltic pump according to any one of claims 2 to 7, characterized in that: The cam (8) is a circular ring structure, and the circumferential angle β of the thin-walled area of ​​the cam (8) is 80°±40°; the driving component (13) adopts a stepping motor or a servo motor or a motor driving unit.

10. The double-roller radial continuous rotation peristaltic pump according to any one of claims 1 to 7, characterized in that: There are two elastic hoses (7), and both ends of the two elastic hoses (7) are connected via three-way joints respectively. A plurality of groups of tube pressing mechanisms are alternately arranged on the rotating mechanism. The rotating mechanism is driven to rotate by the driving mechanism, and the rotating mechanism drives the tube pressing mechanism to rotate. The plurality of groups of tube pressing mechanisms alternately and displaceably squeeze the two elastic hoses (7) to achieve low-pulsation fluid filling.

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