Rotary rolling peristaltic pump
By using the design of a dual roller synchronous rotary extrusion elastic hose in a peristaltic pump, the problems of wear and filling accuracy of the inner wall of the hose are solved, and the fluid filling effect with high precision and low wear is achieved.
Patent Information
- Application Number
- CN202422162360.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-03
AI Technical Summary
The inner wall of the hose in the existing peristaltic pumps is severely worn, the fluid is contaminated, the repeat filling accuracy is low and the filling range is narrow.
A rotary rolling peristaltic pump is designed, using a transmission wheel assembly and a transmission belt assembly to mesh each other. The roller pressing tube assembly is located on both sides of the elastic hose. The extrusion hose is synchronously rotated and extruded hose through a dual roller to realize fluid metering and conveying, and the hose is disassembled and assembled through a moving mechanism.
It effectively reduces the wear of the inner wall of the hose, improves the accuracy of repeated filling, extends the service life of the pump pipe, and achieves high-precision continuous filling without being restricted by the flow range.
Smart Images
Figure CN222977001U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of fluid filling pumps, and particularly relates to a rotary rolling peristaltic pump. Background Art
[0002] A peristaltic pump is a liquid conveying device with controllable flow rate. The peristaltic pump utilizes 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] The existing peristaltic pump relies on a roller pressing tube assembly with a rotating device to rotate and roll the hose to discharge the fluid, and the rolling and extrusion amount of the fluid is controlled by the number of turns or the angle of rotation of the roller pressing tube assembly. For each filling, the initial position and the end position of the roller pressing tube assembly rolling the hose will not be at the same position due to the accumulation of the number of turns or the angle, and there are also differences in the elastic recovery of the hose at different positions, making it difficult for the traditional peristaltic pump to achieve the expected effect in terms of repeated filling accuracy.
[0004] The filling amount range of the existing peristaltic pump for single filling is not wide and there are limitations. Currently, there are peristaltic pumps with classified 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 restricted by the flow rate range. Summary of the Utility Model
[0005] The technical problem to be solved by the utility model is to solve the problems in the existing peristaltic pump, such as serious wear on the inner wall of the hose, generation of a large amount of particles resulting in fluid contamination, low repeated filling accuracy, and narrow filling range. The utility model provides a rotary rolling peristaltic pump with a compact structure, convenient disassembly and assembly, high reliability, low wear amount on the inner wall of the hose, high repeated filling accuracy, and low cost.
[0006] To solve the above technical problems, the utility model adopts the following technical solutions:
[0007] A rotary rolling peristaltic pump, comprising a mounting platen, on which a driving mechanism, a rotating mechanism and a roller tube pressing assembly are provided; the rotating mechanism includes a transmission wheel assembly and a transmission belt assembly, the transmission belt assembly surrounds the side of the transmission wheel assembly, and the transmission wheel assembly and the transmission belt assembly mesh with each other; a plurality of groups of roller tube pressing assemblies are evenly provided on the transmission belt assembly and the transmission wheel assembly, and the roller tube pressing assemblies on the transmission belt assembly and the roller tube pressing assemblies on the transmission wheel assembly are respectively arranged on opposite sides of the flexible hose; the transmission wheel assembly is connected to the output end of the driving mechanism, and under the drive of the driving mechanism, the transmission wheel assembly rotates and drives the engaged transmission belt assembly to rotate. The roller tube pressing assemblies mounted on the transmission wheel assembly and the roller tube pressing assemblies mounted on the transmission belt assembly are driven to move in a circular motion together and rotate to squeeze the flexible hose, realizing fluid metering and conveying; when the roller tube pressing assembly on the transmission belt assembly rotates to the end of the transmission belt assembly, the roller tube pressing assembly releases the flexible hose.
[0008] As a further improvement of the present utility model, a moving mechanism is further provided on the mounting platen, the transmission belt assembly is mounted on the moving mechanism, and under the drive of the moving mechanism, the transmission belt assembly moves as a whole and moves away from or close to the transmission wheel assembly, so as to facilitate the disassembly and assembly of the flexible hose.
[0009] As a further improvement of the present utility model, the transmission wheel assembly includes a bearing seat, a transmission wheel, a support block, a belt pulley shaft and a first cover plate; the bearing seat is fixedly connected to the mounting platen, one end of the support block is fixedly connected to the bearing seat, and the other end of the support block is fixedly connected to the first cover plate. The liquid inlet end and the liquid outlet end of the flexible hose are respectively fixed to both ends of the support block; the transmission wheel is nested on the belt pulley shaft, and the transmission wheel meshes with the transmission belt assembly. The transmission wheel and the flexible hose are located in the installation space surrounded by the bearing seat, the support block and the first cover plate; one end of the belt pulley shaft passes through the bearing seat and is rotatably connected to the output end of the driving mechanism, and the other end of the belt pulley shaft is rotatably connected to the first cover plate through. A plurality of groups of roller tube pressing assemblies are evenly distributed on the transmission wheel; under the drive of the driving mechanism, the belt pulley shaft drives the transmission wheel to rotate and drives the engaged transmission belt assembly to rotate. The roller tube pressing assemblies mounted on the transmission wheel and the roller tube pressing assemblies mounted on the transmission belt assembly are driven to move in a circular motion together and rotate to squeeze the flexible hose, realizing fluid metering and conveying.
[0010] As a further improvement of the present utility model, first deep groove ball bearings and first shaft retaining snap rings are provided at the connection between the belt pulley shaft and the bearing seat and at the connection between the belt pulley shaft and the first cover plate; the axial cross section of the transmission wheel is in an "I" - shaped structure, and the roller tube pressing assembly mounted on the transmission wheel includes a first roller shaft and a roller, and both ends of the first roller shaft are fixedly connected to both ends of the transmission wheel along the axial direction, and the roller is rotatably nested on the first roller shaft.
[0011] As a further improvement of the present utility model, the belt assembly includes a guide block, a second cover plate, a rotating shaft, a bushing and a transmission belt; the guide block is fixedly connected to the second cover plate, one end of the rotating shaft is rotatably connected to the second cover plate, and the other end of the rotating shaft is rotatably connected to the guide block. A plurality of rotating shafts are evenly distributed in an arc shape in the installation space enclosed by the second cover plate and the guide block. A bushing is provided on the rotating shaft, and the transmission belt is sleeved on the bushing and meshes with the transmission wheel. Multiple groups of roller pressing pipe assemblies are evenly distributed on the transmission belt; under the drive of the drive mechanism, the pulley shaft drives the transmission wheel to rotate, and drives the meshed transmission belt to rotate. The roller pressing pipe assemblies installed on the transmission wheel and the roller pressing pipe assemblies installed on the transmission belt are driven to move in a circular motion together, and rotate and squeeze the elastic hose to achieve fluid metering and conveying.
[0012] As a further improvement of the present utility model, the roller pressing pipe assembly installed on the transmission belt includes a second roller and a second roller shaft. One end of the second roller shaft is slidably connected to the side wall of the guide block through a third deep groove ball bearing, and the other end of the second roller shaft is slidably connected to the side wall of the second cover plate through a third deep groove ball bearing, and the second roller shaft is fixedly connected to the transmission belt by screws; the second roller is nested on the second roller shaft, and third deep groove ball bearings are provided at the connections of both ends of the second roller with the second roller shaft.
[0013] As a further improvement of the present utility model, the transmission wheel and the transmission belt have the same number of teeth and pitch. The first roller is installed at a trisected position on the transmission wheel, and the second roller is installed at a trisected position on the transmission belt.
[0014] As a further improvement of the present utility model, the moving mechanism includes a mounting seat, a handle, a cam, a rotating pin and a bottom plate. The mounting seat is fixedly connected to the upper part of the mounting table plate. The side part of the guide block is slidably nested outside the mounting seat. The bottom plate is fixedly connected to the bottom of the mounting table plate. The bottom of the second cover plate is slidably connected to the bottom plate; the cam is arranged on the mounting seat, the cam is fixedly connected to the guide block through the rotating pin, and one end of the handle is fixedly connected to the cam, and the other end of the handle extends outside the guide block; when the handle is rotated, the cam drives the guide block to slide along the mounting seat, so as to realize the overall movement of the belt assembly, and further realize the mutual separation or approach of the second roller and the first roller, which is convenient for the disassembly and assembly of the elastic hose on the support block.
[0015] As a further improvement of the present utility model, there are two elastic hoses. First rollers are provided at both ends of the first roller shaft, and second rollers are provided at both ends of the second roller shaft to simultaneously squeeze two groups of elastic hoses;
[0016] Alternatively, there are two flexible hoses, and the two ends of the two flexible hoses are respectively connected through three-way joints. The first rollers on the driving wheel and the second rollers on the conveyor belt are installed in an alternating and staggered manner. The pressing roller group formed by multiple first rollers and multiple second rollers alternately and staggeredly presses the two flexible hoses to achieve low-pulsation fluid filling.
[0017] 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 installed on the installation table board, and the output shaft of the driving component is connected to the belt pulley shaft; the driving component and the PLC controller are electrically connected, and the PLC controller controls the operation of the driving component.
[0018] As a further improvement of the present utility model, the output shaft of the stepping motor and the belt pulley shaft are rotationally connected through a connecting sleeve.
[0019] As a further improvement of the present utility model, the driving component adopts a stepping motor or a servo motor or a motor driving unit; the conveyor belt component adopts a synchronous belt driving component or a chain driving component.
[0020] Compared with the prior art, the advantages of the present utility model are as follows:
[0021] The rotary rolling peristaltic pump of the present utility model forms the main structure of the peristaltic pump by arranging a driving mechanism, a rotating mechanism and a roller tube pressing assembly on the installation platen. Specifically, the rotating mechanism includes a transmission wheel assembly and a transmission belt assembly. The transmission belt assembly is arc-shaped and surrounds the side of the transmission wheel assembly. The transmission belt assembly meshes with the transmission wheel assembly. Multiple groups of roller tube pressing assemblies are evenly arranged on the transmission belt assembly and the transmission wheel assembly. The arrangement shape of the elastic hose matches the shape of the transmission belt assembly. The roller tube pressing assemblies are located on opposite sides of the elastic hose to reduce the overall installation volume of the peristaltic pump. Driven by the driving mechanism, the transmission wheel assembly drives the transmission belt assembly to rotate and drives the roller tube pressing assembly to perform a circular motion. Through the cooperation of the roller tube pressing assemblies on both sides of the elastic hose, the elastic hose is squeezed to achieve the purpose of fluid metering and transportation. When the roller tube pressing assembly on the transmission belt assembly rotates to the end of the transmission belt assembly, the roller tube pressing assembly on the transmission belt assembly is separated from the roller tube pressing assembly on the transmission wheel assembly to loosen the elastic hose. The elastic hose can periodically recover its elasticity. Also, because the double rollers rotate synchronously to squeeze 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 particles, effectively extending the service life of the pump tube. Since the initial position of the roller tube pressing assembly for each fluid filling is the same, the repeated filling accuracy can be greatly improved. Moreover, 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
[0022] Figure 1 FIG. 6 is a schematic front view of the structure principle of the rotary rolling peristaltic pump in the specific embodiment 1 of the present utility model.
[0023] Figure 2 FIG. 10 is a schematic top view of the structure principle of the rotary rolling peristaltic pump in the specific embodiment 1 of the present utility model.
[0024] Figure 3 FIG. 14 is a schematic right view of the structure principle of the rotary rolling peristaltic pump in the specific embodiment 1 of the present utility model.
[0025] Figure 4 is Figure 1 the schematic cross-sectional structure principle view in the A-A direction of FIG.
[0026] Figure 5 is Figure 1 the schematic cross-sectional structure principle view in the B-B direction of FIG.
[0027] Figure 6 is Figure 1 the schematic cross-sectional structure principle view in the C-C direction of FIG.
[0028] Figure 7 This is a schematic diagram of the structural principle of the 1-rotary rolling peristaltic pump in the specific embodiment of the present invention after removing the cover plate and the guide block.
[0029] Figure 8 This is a three-dimensional axonometric structural principle diagram of the 1-rotary rolling peristaltic pump in the specific embodiment of the present invention after removing the cover plate and the driving wheel.
[0030] Figure 9 This is a three-dimensional axonometric structural principle diagram of the 1-rotary rolling peristaltic pump in the specific embodiment of the present invention.
[0031] Figure 10 This is a schematic cross-sectional structural principle diagram of the 2-rotary rolling peristaltic pump in the specific embodiment of the present invention.
[0032] Figure 11 This is a schematic cross-sectional structural principle diagram of the 3-rotary rolling peristaltic pump in the specific embodiment of the present invention.
[0033] Legend: 1. Installation table board; 2. Bearing seat; 3. First washer; 4. Driving wheel; 5. Support block; 6. First roller shaft; 71. First roller; 72. Second roller; 10. Elastic hose; 11. First deep groove ball bearing; 12. First shaft circlip; 13. Belt pulley shaft; 14. First cover plate; 15. Mounting seat; 16. Guide block; 17. Handle; 18. Cam; 19. Rotating pin; 20. Second cover plate; 21. First washer; 23. Bottom plate; 24. Rotating shaft; 25. Second deep groove ball bearing; 26. Second roller shaft; 27. Bush; 28. Screw; 29. Connecting sleeve; 30. Driving assembly; 31. Transmission belt; 32. Second washer; 33. Second shaft circlip; 34. Third deep groove ball bearing. Detailed implementation manners
[0034] The following further describes the present invention in conjunction with the accompanying drawings of the specification and specific preferred embodiments, but does not limit the protection scope of the present invention thereby.
[0035] 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.
[0036] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.
[0037] Embodiment 1
[0038] As Figures 1 to 9 shown, the rotary rolling peristaltic pump of the present utility model includes a mounting base plate 1, on which a driving mechanism, a rotating mechanism, and a roller tube pressing assembly are provided. The rotating mechanism includes a transmission wheel assembly and a transmission belt assembly. The transmission belt assembly surrounds the side of the transmission wheel assembly, and the transmission wheel assembly and the transmission belt assembly mesh with each other. A plurality of groups of roller tube pressing assemblies are evenly provided on the transmission belt assembly and the transmission wheel assembly, and the roller tube pressing assemblies on the transmission belt assembly and the roller tube pressing assemblies on the transmission wheel assembly are respectively arranged on opposite sides of the flexible hose 10. The transmission wheel assembly is connected to the output end of the driving mechanism. Driven by the driving mechanism, the transmission wheel assembly rotates and drives the engaged transmission belt assembly to rotate. The roller tube pressing assemblies mounted on the transmission wheel assembly and the roller tube pressing assemblies mounted on the transmission belt assembly are driven to move in a circular motion together, and rotate to squeeze the flexible hose 10, squeezing the liquid to flow forward to achieve fluid metering and conveying; when the roller tube pressing assembly on the transmission belt assembly rotates to the end of the transmission belt assembly, the roller tube pressing assembly releases the flexible hose 10.
[0039] In this embodiment, a driving mechanism, a rotating mechanism, and a roller tube pressing assembly are provided on the mounting platen 1, which constitutes the main structure of the peristaltic pump. Specifically, the rotating mechanism includes a transmission wheel assembly and a transmission belt assembly. The transmission belt assembly is arc-shaped and surrounds the side of the transmission wheel assembly. The transmission belt assembly meshes with the transmission wheel assembly. A plurality of groups of roller tube pressing assemblies are evenly arranged on the transmission belt assembly and the transmission wheel assembly. The arrangement shape of the elastic hose 10 matches the shape of the transmission belt assembly. The roller tube pressing assemblies are located on opposite sides of the elastic hose 10 to reduce the overall installation volume of the peristaltic pump. Driven by the driving mechanism, the transmission wheel assembly drives the transmission belt assembly to rotate and drives the roller tube pressing assembly to perform a circular motion. Through the cooperation of the roller tube pressing assemblies on both sides of the elastic hose 10, the elastic hose 10 is squeezed to achieve the purpose of fluid metering and conveying. When the roller tube pressing assembly on the transmission belt assembly rotates to the end of the transmission belt assembly, the roller tube pressing assembly on the transmission belt assembly is separated from the roller tube pressing assembly on the transmission wheel assembly to loosen the elastic hose 10. The elastic hose 10 can periodically recover its elasticity. Also, because the double rollers rotate synchronously to squeeze 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 the generation of a large number of particles, and effectively extending the service life of the pump tube. Since the initial position of the roller tube pressing assembly for each fluid filling is the same, the repeated filling accuracy can be greatly improved. Moreover, 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.
[0040] In this embodiment, a moving mechanism is further provided on the mounting platen 1. The transmission belt assembly is installed on the moving mechanism. Driven by the moving mechanism, the transmission belt assembly moves as a whole and moves away from or closer to the transmission wheel assembly to facilitate the disassembly and assembly of the elastic hose 10.
[0041] Such as Figure 4 , Figure 5 and Figure 6As shown in the figure, the driving wheel assembly includes a bearing block 2, a driving wheel 4, a support block 5, a pulley shaft 13, and a first cover plate 14. The bearing block 2 is fixedly connected to the mounting table plate 1. One end of the support block 5 is fixedly connected to the bearing block 2, and the other end of the support block 5 is fixedly connected to the first cover plate 14. The liquid inlet end and the liquid outlet end of the flexible hose 10 are respectively fixed to both ends of the support block 5. The driving wheel 4 is nested on the pulley shaft 13, and the driving wheel 4 meshes with the transmission belt assembly. The driving wheel 4 and the flexible hose 10 are located in the installation space enclosed by the bearing block 2, the support block 5, and the first cover plate 14, and the flexible hose 10 is located inside the driving wheel 4. One end of the pulley shaft 13 passes through the bearing block 2 and is rotatably connected to the output end of the driving mechanism, and the other end of the pulley shaft 13 is rotatably connected to the first cover plate 14. Multiple groups of roller tube pressing assemblies are evenly distributed on the driving wheel 4. Driven by the driving mechanism, the pulley shaft 13 drives the driving wheel 4 to rotate, and drives the meshing transmission belt assembly to rotate. The roller tube pressing assemblies mounted on the driving wheel 4 and the roller tube pressing assemblies mounted on the transmission belt assembly are driven to perform a circular motion together, and rotate to squeeze the flexible hose 10 to achieve fluid metering and conveying.
[0042] As Figure 6 shown, at the connection between the pulley shaft 13 and the bearing block 2 and at the connection between the pulley shaft 13 and the first cover plate 14, a first deep groove ball bearing 11 and a first shaft circlip 12 are provided to achieve smooth rotation of the pulley shaft 13. The axial cross-section of the driving wheel 4 is in an "I" - shaped structure. The roller tube pressing assembly mounted on the driving wheel 4 includes a first roller shaft 6 and a first roller 71. Both ends of the first roller shaft 6 are fixedly connected to both ends of the driving wheel 4 along the axial direction, and the first roller 71 is rotatably nested on the first roller shaft 6. And at the connection between both ends of the first roller 71 and the first roller shaft 6, a second deep groove ball bearing 25 is provided, and a second washer 32 is provided between the first roller 71 and the driving wheel 4 to achieve that the first roller 71 rotates and squeezes the flexible hose 10 at the same time. In other embodiments, both ends of the first roller shaft 6 can also be fixedly connected to both ends of the driving wheel 4 along the radial direction to achieve that the first roller 71 is arranged below the position of the driving wheel 4.
[0043] As Figure 6 and Figure 7As shown in the figure, the belt drive assembly includes a guide block 16, a second cover plate 20, a rotating shaft 24, a bushing 27, and a belt 31. The guide block 16 is fixedly connected to the second cover plate 20. One end of the rotating shaft 24 is rotatably connected to the second cover plate 20, and the other end of the rotating shaft 24 is rotatably connected to the guide block 16. A plurality of rotating shafts 24 are evenly distributed in an arc shape within the installation space enclosed by the second cover plate 20 and the guide block 16. A bushing 27 is provided on the rotating shaft 24, and the bushing 27 is close to the guide block 16. The belt 31 is sleeved on the bushing 27, and the belt 31 meshes with the transmission wheel 4. Multiple groups of roller pressing tube assemblies are evenly distributed on the belt 31. Driven by the driving mechanism, the pulley shaft 13 drives the transmission wheel 4 to rotate, and drives the meshing belt 31 to rotate. The roller pressing tube assemblies installed on the transmission wheel 4 and the roller pressing tube assemblies installed on the belt 31 are driven to perform a circular motion together, and rotate and squeeze the flexible hose 10 to achieve fluid metering and conveying.
[0044] As Figure 6 shown in the figure, the roller pressing tube assembly installed on the belt 31 includes a second roller 72 and a second roller shaft 26. One end of the second roller shaft 26 is slidably connected to the side wall of the guide block 16 through a third deep groove ball bearing 34, and the other end of the second roller shaft 26 is slidably connected to the side wall of the second cover plate 20 through a third deep groove ball bearing 34. The second roller shaft 26 is fixedly connected to the belt 31 through a screw 28. The second roller 72 is nested on the second roller shaft 26, and third deep groove ball bearings 34 are provided at the joints of both ends of the second roller 72 and the second roller shaft 26 to enable the second roller 72 to rotate and squeeze the flexible hose 10. Driven by the driving mechanism, the pulley shaft 13 drives the transmission wheel 4 to rotate, and drives the meshing belt 31 to rotate. The first roller 71 installed on the transmission wheel 4 and the second roller 72 installed on the belt 31 are driven to perform a circular motion together, and rotate and squeeze the flexible hose 10 to achieve fluid metering and conveying.
[0045] As Figure 7 and Figure 8 shown in the figure, the transmission wheel 4 and the belt 31 have the same number of teeth and pitch. Three first rollers 71 are evenly installed at the positions of the three equal parts in the circumferential direction of the transmission wheel 4, and three second rollers 72 are evenly installed at the positions of the three equal parts of the arc length in the annular direction of the belt 31.
[0046] During each filling operation, the driving wheel 4 rotates to drive the conveyor belt 31 to perform a circular motion. The conveyor belt 31 drives the second roller 72 to perform a circular motion. The second roller 72 and the first roller 71 rotate and squeeze the elastic hose 10 while moving forward along the arc direction on the arc segment where they are in circular contact, until they reach the circular arc segment and start to disengage from squeezing the elastic hose 10, completing the filling of a single tube of fluid. Immediately afterwards, the next filling with the same synchronous distance as the initial squeezing position and disengagement position is carried out. Since the driving wheel 4 and the conveyor belt 31 have the same number of teeth and circumferential length, and the first roller 71 and the second roller 72 are both installed at positions that divide the circular perimeter size into three equal parts, the arc distances between the three groups of rollers are all the same. Therefore, during each filling, the initial positions and distances of the roller arcs squeezing and disengaging from the elastic hose 10 are the same, thus achieving the purpose of high-precision repeated filling. For elastic hoses 10 of different specifications, as long as they have the same wall thickness, they can be installed on the equipment for filling, and a wide range of flow filling can be achieved. Further, the conveyor belt assembly can adopt a synchronous belt drive, a chain drive, or other similar drive methods, as long as it can drive the second roller 72 to rotate smoothly, cooperate with the first roller 71 to squeeze the elastic hose 10, and achieve metering filling of the material. Multiple groups of conveyor belt assemblies and driving wheel assemblies can also be set up simultaneously to squeeze multiple groups of elastic hoses 10 at the same time, improving the filling efficiency.
[0047] As Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 8 and Figure 9 shown, the moving mechanism includes a mounting base 15, a handle 17, a cam 18, a pivot pin 19, and a bottom plate 23. The mounting base 15 is fixedly connected to the upper part of the mounting table plate 1. The side of the guide block 16 is slidably nested outside the mounting base 15. The bottom plate 23 is fixedly connected to the bottom of the mounting table plate 1. The bottom of the second cover plate 20 is slidably connected to the bottom plate 23. The cam 18 is disposed on the mounting base 15. The cam 18 is fixedly connected to the guide block 16 through the pivot pin 19. One end of the handle 17 is fixedly connected to the cam 18, and the other end of the handle 17 extends outside the guide block 16. When the handle 17 is rotated, the cam 18 drives the guide block 16 to slide along the mounting base 15, so as to realize the overall movement of the conveyor belt assembly, and further realize the mutual separation or approach of the second roller 72 and the first roller 71, facilitating the disassembly and assembly of the elastic hose 10 on the support block 5.
[0048] In this embodiment, when the elastic hose 10 needs to be replaced after the fluid filling is completed, the handle 17 is pulled to rotate 90°, driving the cam 18 to rotate. The rotation of the cam 18 drives the guide block 16 to retract, and drives the transmission belt 31 and the second roller 72 to retract to the maximum displaceable distance. At this time, the elastic hose 10 can be replaced. After the elastic hose 10 is replaced and installed, the handle 17 is rotated back 90°, the rotation of the cam 18 drives the guide block 16 to advance, pushing the transmission belt 31 and the second roller 72 to advance, returning to the initial position before the hose replacement, and clamping the elastic hose 10.
[0049] In this embodiment, the drive mechanism includes a drive assembly 30 and an external PLC controller (not shown in the figure). The drive assembly 30 is installed on the mounting plate 1, and the output shaft of the drive assembly 30 is connected to the pulley shaft 13 through a connecting sleeve 29. The drive assembly 30 is electrically connected to the PLC controller, and the PLC controller controls the operation of the drive assembly 30. For example, controlling the start and stop, forward and reverse rotation, full speed, speed regulation, and flow calibration of the drive assembly 30, etc., to improve the control accuracy of filling. Further, the drive assembly 30 can specifically adopt motors or drive units such as stepping motors or servo motors, as long as it can drive the drive wheel 4 to rotate smoothly and realize the smooth extrusion of the elastic hose 10 by the roller tube pressing assembly.
[0050] As Figure 5 and Figure 6 shown, the drive assembly 30 drives the connecting sleeve 29 to rotate, the rotation of the connecting sleeve 29 drives the drive wheel 4 to rotate, the rotation of the drive wheel 4 drives the engaged transmission belt 31 to rotate, and the first roller 71 mounted on the drive wheel 4 and the second roller 72 mounted on the transmission belt 31 are driven to move in a circular motion together. The first roller 71 and the second roller 72 synchronously move and rotate in the circular direction to squeeze the elastic hose 10, realizing the transportation of the fluid. Since the rollers are evenly distributed on the transmission belt in three equal parts of the circular circumference dimension, and the arc distances between them are all the same, for each filling, the initial position and distance of the rollers squeezing and disengaging from the elastic hose 10 are the same, achieving the purpose of high-precision repeated filling.
[0051] Since the distance between the first roller 71 and the second roller 72 is fixed, when the elastic hose 10 is squeezed, the distance between the upper layer and the lower layer of the tube wall of the elastic hose 10 is also fixed. As long as the elastic hose 10 has the same wall thickness, it can be installed on the equipment for filling, realizing large-range flow filling. During the extrusion filling process, the double roller groups on both sides of the elastic hose 10 rotate automatically while moving along the arc direction to squeeze the elastic hose 10, minimizing both the shear of the liquid molecules during filling and the wear of the elastic hose 10.
[0052] Embodiment 2
[0053] As Figure 10As shown, the rotary rolling peristaltic pump of the present utility model has a similar structural arrangement and working principle to the rotary rolling peristaltic pump in Embodiment 1. The main differences are as follows:
[0054] There are two elastic hoses 10. First roller shafts 6 are provided with first rollers 71 at both ends, and second roller shafts 26 are provided with second rollers 72 at both ends. The first rollers 71 and the second rollers 72 correspond to each other one by one to simultaneously squeeze the two groups of elastic hoses 10, improving the filling efficiency.
[0055] Embodiment 3
[0056] As Figure 11 As shown, the rotary rolling peristaltic pump of the present utility model has a similar structural arrangement and working principle to the rotary rolling peristaltic pump in Embodiment 1. The main differences are as follows:
[0057] There are two elastic hoses 10, and the two ends of the two elastic hoses 10 are respectively connected through a tee joint (not shown in the figure) to achieve confluence and diversion. The first rollers 71 on the driving wheel 4 and the second rollers 72 on the transmission belt 31 are installed with corresponding alternating displacements. The pressing tube roller groups formed by multiple first rollers 71 and multiple second rollers 72 alternately displace and squeeze the two elastic hoses 10 to achieve low-pulsation fluid filling.
[0058] Furthermore, for example, multiple first roller shafts 6 are evenly distributed on the driving wheel 4, and first rollers 71 are alternately arranged at both ends of the multiple first roller shafts 6. Multiple second roller shafts 26 are also correspondingly arranged on the transmission belt 31, and second rollers 72 are alternately arranged at both ends of the multiple second roller shafts 26. When the peristaltic pump operates, the first rollers 71 on the driving wheel 4 and the second rollers 72 on the transmission belt 31 are matched to form corresponding roller groups to alternately displace and squeeze the two elastic hoses 10. The specific number of the first roller shafts 6 and the second roller shafts 26 can be arranged according to actual filling requirements.
[0059] 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, or modify it into an equivalent embodiment 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 based on the technical essence of the present utility model without departing from 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 rotary roller peristaltic pump, characterized in that: The invention comprises an installation table (1), on which a driving mechanism, a rotating mechanism and a roller tube pressing assembly are provided; the rotating mechanism comprises a transmission wheel assembly and a transmission belt assembly, the transmission belt assembly surrounds the side of the transmission wheel assembly, and the transmission wheel assembly and the transmission belt assembly are meshed with each other; a plurality of roller tube pressing assemblies are evenly arranged on the transmission belt assembly and the transmission wheel assembly, and the roller tube pressing assemblies on the transmission belt assembly and the roller tube pressing assemblies on the transmission wheel assembly are respectively arranged on opposite sides of the elastic hose (10); the transmission wheel assembly is connected to the output end of the driving mechanism, and under the drive of the driving mechanism, the transmission wheel assembly rotates and drives the meshed transmission belt assembly to rotate, and the roller tube pressing assembly installed on the transmission wheel assembly and the roller tube pressing assembly installed on the transmission belt assembly are driven to perform a circular motion together and rotate to squeeze the elastic hose (10) to realize fluid metering and conveying; when the roller tube pressing assembly on the transmission belt assembly rotates to the end of the transmission belt assembly, the roller tube pressing assembly releases the elastic hose (10).
2. The rotary roller peristaltic pump according to claim 1, characterized in that: The installation platform (1) is also provided with a moving mechanism, and the transmission belt assembly is installed on the moving mechanism. Driven by the moving mechanism, the transmission belt assembly moves as a whole and moves away from or close to the transmission wheel assembly, so as to facilitate the disassembly and assembly of the elastic hose (10).
3. The rotary roller peristaltic pump according to claim 2, characterized in that: The transmission wheel assembly comprises a bearing seat (2), a transmission wheel (4), a support block (5), a pulley shaft (13) and a first cover plate (14); the bearing seat (2) is connected and fixed to the mounting platform (1), one end of the support block (5) is connected and fixed to the bearing seat (2), the other end of the support block (5) is connected and fixed to the first cover plate (14), and the liquid inlet end and the liquid outlet end of the elastic hose (10) are respectively fixed to the two ends of the support block (5); the transmission wheel (4) is nested on the pulley shaft (13), and the transmission wheel (4) and the transmission belt assembly are meshed with each other, and the transmission wheel (4) and the elastic hose (10) are located in an installation space surrounded by the bearing seat (2), the support block (5) and the first cover plate (14); one end of the pulley shaft (13) passes through the bearing seat (2 ) is rotationally connected to the output end of the driving mechanism, the other end of the pulley shaft (13) is rotationally connected to the first cover plate (14), and multiple groups of roller tube pressing assemblies are evenly distributed on the transmission wheel (4), and the roller tube pressing assembly includes a first roller shaft (6) and a first roller (71), the two ends of the first roller shaft (6) are axially connected and fixed to the two ends of the transmission wheel (4), and the first roller (71) is rollingly nested on the first roller shaft (6); under the drive of the driving mechanism, the pulley shaft (13) drives the transmission wheel (4) to rotate, and drives the meshing transmission belt assembly to rotate, and the roller tube pressing assembly installed on the transmission wheel (4) and the roller tube pressing assembly installed on the transmission belt assembly are driven together to perform annular motion, and rotate to extrude the elastic hose (10) to achieve fluid metering and transportation.
4. The rotary roller peristaltic pump according to claim 3, characterized in that: The transmission belt assembly comprises a guide block (16), a second cover plate (20), a rotating shaft (24), a shaft sleeve (27) and a transmission belt (31); the guide block (16) is connected and fixed to the second cover plate (20); one end of the rotating shaft (24) is rotationally connected to the second cover plate (20); the other end of the rotating shaft (24) is rotationally connected to the guide block (16); a plurality of rotating shafts (24) are evenly distributed in an installation space enclosed by the second cover plate (20) and the guide block (16) in an arc shape; and a shaft is provided on the rotating shaft (24). The transmission belt (31) is sleeved on the shaft sleeve (27), and the transmission belt (31) is meshed with the transmission wheel (4), and a plurality of roller tube pressing assemblies are evenly distributed on the transmission belt (31); under the drive of the driving mechanism, the pulley shaft (13) drives the transmission wheel (4) to rotate, and drives the meshed transmission belt (31) to rotate, and the roller tube pressing assembly installed on the transmission wheel (4) and the roller tube pressing assembly installed on the transmission belt (31) are driven together to perform a circular motion, and rotate to squeeze the elastic hose (10), thereby realizing fluid metering and conveying.
5. The rotary roller peristaltic pump according to claim 4, characterized in that: The roller tube pressing assembly installed on the transmission belt (31) comprises a second roller (72) and a second roller shaft (26); one end of the second roller shaft (26) is slidably connected to the side wall of the guide block (16) via a third deep groove ball bearing (34); the other end of the second roller shaft (26) is slidably connected to the side wall of the second cover plate (20) via the third deep groove ball bearing (34); and the second roller shaft (26) is connected and fixed to the transmission belt (31) via a screw (28); the second roller (72) is nested on the second roller shaft (26); and third deep groove ball bearings (34) are provided at the connection between the two ends of the second roller (72) and the second roller shaft (26).
6. The rotary roller peristaltic pump according to claim 5, characterized in that: The transmission wheel (4) and the transmission belt (31) have the same number of teeth and tooth pitch; the first roller (71) is mounted at three equally spaced positions on the transmission wheel (4); and the second roller (72) is mounted at three equally spaced positions on the transmission belt (31).
7. The rotary roller peristaltic pump according to claim 5, characterized in that: The moving mechanism comprises a mounting seat (15), a handle (17), a cam (18), a rotating pin (19) and a bottom plate (23); the mounting seat (15) is connected and fixed to the upper part of the mounting platform (1); the side of the guide block (16) is slidably nested on the outer side of the mounting seat (15); the bottom plate (23) is connected and fixed to the bottom of the mounting platform (1); the bottom of the second cover plate (20) is slidably connected to the bottom plate (23); the cam (18) is arranged on the mounting seat (15); the cam (18) The handle (17) is connected and fixed to the guide block (16) via a rotating pin (19), one end of the handle (17) is connected and fixed to the cam (18), and the other end of the handle (17) extends to the outside of the guide block (16); when the handle (17) is rotated, the cam (18) drives the guide block (16) to slide along the mounting seat (15), so as to realize the overall movement of the transmission belt assembly, thereby realizing the second roller (72) and the first roller (71) to move away from or approach each other, so as to facilitate the disassembly and assembly of the elastic hose (10) on the support block (5).
8. The rotary roller peristaltic pump according to claim 5, characterized in that: There are two elastic hoses (10), both ends of the first roller shaft (6) are provided with first rollers (71), and both ends of the second roller shaft (26) are provided with second rollers (72), so as to realize simultaneous extrusion of two groups of elastic hoses (10); Alternatively, there are two elastic hoses (10), and the two ends of the two elastic hoses (10) are connected via a three-way joint, respectively; the first roller (71) on the transmission wheel (4) and the second roller (72) on the transmission belt (31) are installed in a corresponding alternating staggered manner; a tube pressing roller group formed by a plurality of first rollers (71) and a plurality of second rollers (72) alternately staggers and squeezes the two elastic hoses (10) to achieve low-pulsation fluid filling.
9. The rotary roller peristaltic pump according to any one of claims 3 to 8, characterized in that: The driving mechanism comprises a driving component (30) and an external PLC controller; the driving component (30) is mounted on a mounting plate (1), and an output shaft of the driving component (30) is connected to a pulley shaft (13); the driving component (30) is electrically connected to the PLC controller, and the PLC controller controls the operation of the driving component (30).
10. The rotary roller peristaltic pump according to claim 9, characterized in that: The driving assembly (30) adopts a stepping motor or a servo motor or a motor driving unit; the transmission belt assembly adopts a synchronous belt transmission assembly or a chain transmission assembly.