Power transmission linear peristaltic pump

Abstract

The utility model discloses a power transmission linear peristaltic pump, which is characterized in that a driving mechanism, a rotating mechanism and roller pipe pressing components are arranged on an installation bedplate, the rotating mechanism is connected with the driving mechanism, the rotating mechanism is arranged on two opposite sides of an elastic hose along the horizontal direction, and a plurality of groups of roller pipe pressing components are uniformly distributed on the rotating mechanism; the driving mechanism drives the rotating mechanisms located on the two sides of the elastic hose to synchronously and annularly rotate so as to drive the roller pipe pressing assemblies to synchronously rotate. When the rolling wheel pipe pressing assembly rotates to the linear section of the rotating mechanism, the rolling wheel extrudes the elastic hose while linearly moving; when the rolling wheel pipe pressing assembly rotates to the arc section of the rotating mechanism, the rolling wheel loosens the elastic hose. 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 fluid filling pumps, and particularly relates to a power transmission linear peristaltic pump. Background Art

[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 the hose with two fingers. As the fingers move, the liquid flows accordingly.

[0003] The existing peristaltic pump relies on the rotation of a roller assembly with a rotating device to roll and press the hose to discharge the fluid, and the amount of fluid rolled and extruded depends on the number of turns or angle of rotation of the roller assembly. For each filling, the initial position and the end position of the roller assembly rolling and pressing the hose will not be at the same position due to the accumulation of the number of turns or angles, 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 of repeated filling accuracy.

[0004] The filling volume range of the existing peristaltic pump for single filling is not wide, and there are 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 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 of serious wear on the inner wall of the hose in the existing peristaltic pump, generation of a large number of particles resulting in fluid contamination, low repeated filling accuracy, and narrow filling range, and to provide a power transmission linear peristaltic pump with a compact structure, convenient disassembly and assembly, high reliability, low wear 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 power transmission linear peristaltic pump includes an installation base plate, on which a driving mechanism, a rotating mechanism, and a roller tube pressing assembly are provided. The rotating mechanism is connected to the output end of the driving mechanism. The rotating mechanism includes an arc section and a straight section. The straight section of the rotating mechanism is arranged horizontally on opposite sides of the elastic hose, and multiple groups of roller tube pressing assemblies are evenly distributed on the rotating mechanism. Driven by the driving mechanism, the rotating mechanisms on both sides of the elastic hose perform synchronous circular rotation to drive the roller tube pressing assemblies to rotate synchronously. When the roller tube pressing assembly rotates to the straight section of the rotating mechanism, the roller tube pressing assembly moves linearly while squeezing the elastic hose. When the roller tube pressing assembly rotates to the arc section of the rotating mechanism, the roller tube pressing assembly releases 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 installed on the mounting platen, and the output end of the driving component is connected to the rotating mechanism; the driving component and the PLC controller are electrically connected, and the PLC controller drives the driving component to operate.

[0009] As a further improvement of the present utility model, the rotating mechanism includes a mounting support arranged on the mounting platen, and a driven gear, a first driven shaft, a driving shaft, a driving gear, a second driven shaft, a third driven shaft and a belt transmission assembly arranged on the mounting support; the output end of the transmission assembly is connected to the driving shaft, the driving gear is mounted on the driving shaft, the driven gear is mounted on the first driven shaft, and the driving shaft is rotationally connected to the first driven shaft through the meshing of the driving gear and the driven gear; the belt transmission assemblies are respectively located on the upper and lower sides of the flexible hose, and a plurality of roller pipe pressing assemblies are evenly distributed on the belt transmission assemblies; the driving shaft and the second driven shaft are respectively connected to the two ends of the belt transmission assembly on the lower side of the flexible hose, and the first driven shaft and the third driven shaft are respectively connected to the two ends of the belt transmission assembly on the upper side of the flexible hose; driven by the transmission assembly, the driving shaft rotates, and drives the first driven shaft, the second driven shaft and the third driven shaft to rotate, so as to realize the rotation of the belt transmission assemblies on the upper and lower sides of the flexible hose, and further drive the roller pipe pressing assemblies to squeeze or loosen the flexible hose.

[0010] As a further improvement of the present utility model, the belt transmission assembly includes a first transmission belt, a transmission wheel and a second transmission belt, and the two ends of the first transmission belt and the second transmission belt are respectively connected through the transmission wheel; on the same side of the flexible hose, the first transmission belt and the second transmission belt are in the same horizontal plane, and the two ends of the roller pipe pressing assembly are respectively connected to the first transmission belt and the second transmission belt, and the roller pipe pressing assembly rotates synchronously with the first transmission belt and the second transmission belt.

[0011] As a further improvement of the present utility model, the driving component adopts a stepping motor or a servo motor or a motor drive unit; the belt transmission assembly adopts a synchronous belt transmission assembly or a chain transmission assembly.

[0012] As a further improvement of the present utility model, the roller pipe pressing assembly includes a roller shaft, a third deep groove ball bearing, a roller and a third shaft retaining ring for shafts; the roller is nested outside the roller shaft through the third deep groove ball bearing, one end of the roller shaft is nested in the first transmission belt, the other end of the roller shaft is nested in the second transmission belt, and third shaft retaining rings for shafts are arranged at the joints of the roller shaft and the first transmission belt and the second transmission belt.

[0013] As a further improvement of the present utility model, the belt assembly further includes a third transmission belt. On the same side of the elastic hose, the first transmission belt, the second transmission belt, and the third transmission belt are in the same horizontal plane, and roller tube pressing assemblies are correspondingly connected between the first transmission belt and the third transmission belt, and between the second transmission belt and the third transmission belt, so as to simultaneously extrude two elastic hoses.

[0014] As a further improvement of the present utility model, the first driven shaft, the driving shaft, the second driven shaft, and the third driven shaft all penetrate through the first bearing mounting seat and the second bearing mounting seat. At the connection of the first driven shaft, the driving shaft, the second driven shaft, and the third driven shaft with the first bearing mounting seat, a first shaft retaining ring and a first deep groove ball bearing are provided. At the connection of the first driven shaft, the driving shaft, the second driven shaft, and the third driven shaft with the second bearing mounting seat, a second shaft retaining ring and a second deep groove ball bearing are provided.

[0015] As a further improvement of the present utility model, the rollers are installed at the trisecting positions on the transmission belt.

[0016] As a further improvement of the present utility model, when extruding the elastic hose, the distance h between the upper layer and the lower layer of the hose wall is 2×(70% - 90%)t, where t is the wall thickness of the elastic hose, in mm.

[0017] Compared with the prior art, the advantages of the present utility model are as follows:

[0018] For the power transmission linear peristaltic pump of the present utility model, by connecting the rotating mechanism to the output end of the driving mechanism, arranging the linear section of the rotating mechanism horizontally on the opposite sides of the elastic hose, and evenly distributing multiple groups of roller tube pressing assemblies on the rotating mechanism; using the driving mechanism to drive the rotating mechanisms on both sides of the elastic hose to perform synchronous circular rotation, that is, driving the roller tube pressing assemblies to rotate synchronously; when the roller tube pressing assembly rotates to the linear section of the rotating mechanism, the roller tube pressing assembly moves linearly while extruding the elastic hose, that is, realizing fluid filling; when the roller tube pressing assembly rotates to the arc section of the rotating mechanism, the roller tube pressing assembly releases the elastic hose, and the elastic hose can elastically recover periodically. Also, because the double rollers rotate synchronously 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 particles, effectively extending the service life of the pump tube. Since the initial position of the roller tube pressing assembly is the same for each fluid filling, 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 equipment to implement fluid filling, achieving the purpose that the single - time transmission of the peristaltic pump is not restricted by the flow range. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structural principle of the power transmission linear peristaltic pump in a specific embodiment of the utility model.

[0020] Figure 2 It is a schematic diagram of the top view of the structural principle of the power transmission linear peristaltic pump in the specific embodiment 1 of the utility model.

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure principle of the power transmission linear peristaltic pump in the specific embodiment 1 of the utility model.

[0022] Figure 4 It is a schematic diagram of the top view of the structural principle of the power transmission linear peristaltic pump in the specific embodiment 2 of the utility model.

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure principle of the power transmission linear peristaltic pump in the specific embodiment 2 of the utility model.

[0024] Legend: 1. Mounting plate; 3. Driving assembly; 4. Mounting support; 5. Elastic retaining ring for first shaft; 6. First deep groove ball bearing; 7. First bearing mounting seat; 8. Driven gear; 9. Elastic retaining ring for second shaft; 10. Second deep groove ball bearing; 11. Second bearing mounting seat; 12. Roller shaft; 13. First transmission belt; 14. Transmission wheel; 15. Third deep groove ball bearing; 16. Roller; 17. Elastic retaining ring for third shaft; 18. First driven shaft; 19. Elastic hose; 20. Driving shaft; 21. Support foot; 22. Driving gear; 23. Mounting seat; 25. Second driven shaft; 26. Third driven shaft; 27. Second transmission belt; 28. Third transmission belt. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0026] In the description of the present invention, it should be understood that the terms "side", "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0027] 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.

[0028] Embodiment 1

[0029] As Figure 1 、 Figure 2 and Figure 3 shown, the power transmission linear peristaltic pump of the present utility model includes a mounting base plate 1. Four corners of the bottom of the mounting base plate 1 are provided with support feet 21. A driving mechanism, a rotating mechanism and a roller tube pressing assembly are provided on the mounting base plate 1. The rotating mechanism is connected to the output end of the driving mechanism. The rotating mechanism includes an arc section and a straight section. The straight section of the rotating mechanism is arranged horizontally on opposite sides of an elastic hose 19. Multiple groups of roller tube pressing assemblies are evenly distributed on the rotating mechanism. Driven by the driving mechanism, the rotating mechanisms located on both sides of the elastic hose 19 perform synchronous circular rotation to drive the roller tube pressing assemblies to rotate synchronously. When the roller tube pressing assembly rotates to the straight section of the rotating mechanism, the roller tube pressing assembly moves linearly while squeezing the elastic hose 19. When the roller tube pressing assembly rotates to the arc section of the rotating mechanism, the roller tube pressing assembly releases the elastic hose 19. Only when the rotating mechanism drives the roller tube pressing assembly to rotate to a predetermined position, the roller tube pressing assemblies located on opposite sides of the elastic hose 19 will squeeze the elastic hose 19.

[0030] In this embodiment, by connecting the rotating mechanism to the output end of the driving mechanism, arranging the straight line segments of the rotating mechanism horizontally on opposite sides of the flexible hose 19, and evenly distributing multiple sets of roller tube pressing assemblies on the rotating mechanism; using the driving mechanism to drive the rotating mechanisms on both sides of the flexible hose 19 to perform synchronous circular rotation, that is, driving the roller tube pressing assemblies to rotate synchronously; when the roller tube pressing assemblies rotate to the straight line segments of the rotating mechanism, the roller tube pressing assemblies move linearly while squeezing the flexible hose 19, that is, fluid filling is achieved; and when the roller tube pressing assemblies rotate to the arc segments of the rotating mechanism, the roller tube pressing assemblies release the flexible hose 19, and the flexible hose 19 can elastically recover periodically. Also, because the double rollers rotate synchronously to squeeze the flexible hose 19, 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 on the inner wall of the hose and the 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 assemblies is the same for each fluid filling, the repeated filling accuracy can be greatly improved; and as long as the wall thickness of the flexible hose 19 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 single-tube transmission of the peristaltic pump is not restricted by the flow range.

[0031] As Figure 2 shown, in this embodiment, the driving mechanism includes a driving component 3 and an external PLC controller (not shown in the figure). The driving component 3 is installed on the installation table board 1, and the output end of the driving component 3 is connected to the rotating mechanism. The driving component 3 and the PLC controller are electrically connected, and the PLC controller drives the driving component 3 to operate. For example, controlling the start and stop, forward and reverse rotation, full speed, speed regulation, and flow calibration of the driving component 3, etc., to improve the control accuracy of filling. Further, the driving component 3 can specifically adopt a motor or a driving unit of the type of a stepping motor or a servo motor, as long as it can drive the rotating mechanism to rotate smoothly and achieve the smooth squeezing of the flexible hose 19 by the roller tube pressing assemblies.

[0032] As Figure 1 and Figure 3As shown in the figure, the rotating mechanism includes a mounting support 4 provided on the mounting platen 1, and a driven gear 8, a first driven shaft 18, a driving shaft 20, a driving gear 22, a second driven shaft 25, a third driven shaft 26 and a belt drive assembly provided on the mounting support 4. The output end of the transmission assembly 3 is connected to the driving shaft 20, the driving gear 22 is mounted on the driving shaft 20, the driven gear 8 is mounted on the first driven shaft 18, and the driving gear 22 is engaged with the driven gear 8 to realize the rotational connection between the driving shaft 20 and the first driven shaft 18. The belt drive assemblies are respectively located on the upper and lower sides of the flexible hose 19, and a plurality of roller tube pressing assemblies are evenly distributed on the belt drive assemblies. The driving shaft 20 and the second driven shaft 25 are respectively connected to the two ends of the belt drive assembly on the lower side of the flexible hose 19, and the first driven shaft 18 and the third driven shaft 26 are respectively connected to the two ends of the belt drive assembly on the upper side of the flexible hose 19. Driven by the transmission assembly 3, the driving shaft 20 rotates. The driving shaft 20 and the first driven shaft 18 are connected by transmission through the engagement of the driving gear 22 and the driven gear 8. The driving shaft 20 and the second driven shaft 25 are connected by transmission through the belt drive assembly. The first driven shaft 18 and the third driven shaft 26 are connected by transmission through the belt drive assembly. That is, the driving shaft 20, the first driven shaft 18, the second driven shaft 25 and the third driven shaft 26 rotate synchronously, the belt drive assemblies on the upper and lower sides of the flexible hose 19 rotate, and then the roller tube pressing assemblies are driven to squeeze or release the flexible hose 19.

[0033] As Figure 2 and Figure 3 shown in the figure, the belt drive assembly includes a first belt 13, a transmission wheel 14 and a second belt 27. The two ends of the first belt 13 are respectively connected by transmission through the transmission wheel 14, and the two ends of the second belt 27 are also respectively connected by transmission through the transmission wheel 14. For example, two transmission wheels 14 are simultaneously provided on the driving shaft 20. One transmission wheel 14 is used to connect one end of the first belt 13, and the other transmission wheel 14 is used to connect one end of the second belt 27. Two transmission wheels 14 are also simultaneously provided on the second driven shaft 25. One transmission wheel 14 is used to connect the other end of the first belt 13, and the other transmission wheel 14 is used to connect the other end of the second belt 27. Thus, the two ends of the belt are respectively connected by transmission through the transmission wheel 14. At the same time, on the same side of the flexible hose 19, the first belt 13 and the second belt 27 are in the same horizontal plane, and the two ends of the roller tube pressing assembly are respectively connected to the first belt 13 and the second belt 27. The roller tube pressing assembly rotates synchronously with the first belt 13 and the second belt 27.

[0034] As Figure 3As shown in the figure, the roller tube pressing assembly includes a roller shaft 12, a third deep groove ball bearing 15, a roller 16, and a third shaft snap ring 17. The roller 16 is nested outside the roller shaft 12 through the third deep groove ball bearing 15, and the roller 16 can rotate freely; one end of the roller shaft 12 is nested in the first transmission belt 13, and the other end of the roller shaft 12 is nested in the second transmission belt 27, and third shaft snap rings 17 are provided at the connections between the roller shaft 12 and the first transmission belt 13 and the second transmission belt 27.

[0035] Further, the roller 16 is installed at a position that trisects the circumference of the transmission belt. As Figure 1 shown in the figure, when the roller group on the far right of the transmission belt squeezes the flexible hose 19, the roller group on the far left of the transmission belt just releases the flexible hose 19. As the transmission belt rotates, the roller group that squeezes the flexible hose 19 moves linearly from the far right to the far left, squeezing the liquid to flow forward, and then releases the flexible hose 19. At this time, a new roller group moves to the far right of the flexible hose 19 and squeezes the flexible hose 19. This process repeats cyclically to achieve continuous extrusion filling of the flexible hose 19. During the extrusion filling process, the double roller groups on the upper and lower sides of the flexible hose 19 rotate automatically while moving linearly in the straight line direction to squeeze the flexible hose 19, minimizing both the shear of the liquid molecules being filled and the wear of the flexible hose 19.

[0036] Since the roller 16 is installed at a position that trisects the circumferential perimeter dimension of the transmission belt, the linear distances between the three rollers 16 are all the same. Therefore, every time during filling, the initial positions and distances of the rollers 16 linearly squeezing and releasing the flexible hose 19 are the same, achieving the purpose of high-precision repeated filling. When the flexible hose 19 is being squeezed, the distance h between the upper layer and the lower layer of the tube wall of the flexible hose 19 is 2×(70% - 90%)t, where t is the wall thickness of the flexible hose 19 in mm. For flexible hoses 19 of different specifications, as long as they have the same wall thickness, they can be installed on the equipment for filling, enabling filling over a wide range of flow rates. Further, the transmission assembly can adopt synchronous belt drive, chain drive, or other similar drive methods, as long as it can drive the roller 16 to stably squeeze the flexible hose 19 and achieve continuous metering filling of the material.

[0037] As Figure 1 and Figure 2As shown in the figure, the first driven shaft 18, the driving shaft 20, the second driven shaft 25 and the third driven shaft 26 all penetrate through the first bearing mounting seat 7 and the second bearing mounting seat 11. At the connection between the first driven shaft 18, the driving shaft 20, the second driven shaft 25 and the third driven shaft 26 and the first bearing mounting seat 7, a first shaft snap ring 5 and a first deep groove ball bearing 6 are provided. At the connection between the first driven shaft 18, the driving shaft 20, the second driven shaft 25 and the third driven shaft 26 and the second bearing mounting seat 11, a second shaft snap ring 9 and a second deep groove ball bearing 10 are provided. This not only ensures the stable installation of each transmission shaft but also does not affect the smooth operation of the transmission shaft.

[0038] In this embodiment, during each filling, the driving shaft 20, the first driven shaft 18, the second driven shaft 25 and the third driven shaft 26 rotate to drive the transmission wheel 14 to rotate. The rotation of the transmission wheel 14 drives the first transmission belt 13 and the second transmission belt 27 to perform circular motion. The upper and lower rollers 16 installed on the first transmission belt 13 and the second transmission belt 27 are driven to perform circular motion together. The upper and lower rollers 16 rotate and squeeze the elastic hose 19 while moving forward in a straight line direction on the straight section of the circle until they reach the arc section of the circle and start to disengage from the extrusion of the elastic hose 19, completing the filling of a single tube of fluid. Immediately, the next filling with the same pitch as the initial extrusion position and the disengagement position is carried out, greatly improving the repeated filling accuracy of the peristaltic pump.

[0039] Embodiment 2

[0040] As Figure 1 、 Figure 4 and Figure 5 shown, the power transmission linear peristaltic pump of the present utility model has a similar structural arrangement and working principle to the power transmission linear peristaltic pump in Embodiment 1. The main difference is that the transmission belt assembly further includes a third transmission belt 28. On the same side of the elastic hose 19, the first transmission belt 13, the second transmission belt 27 and the third transmission belt 28 are in the same horizontal plane, and roller tube pressing assemblies are correspondingly connected between the first transmission belt 13 and the third transmission belt 28 and between the second transmission belt 27 and the third transmission belt 28 to simultaneously squeeze two elastic hoses 19.

[0041] As Figure 4 shown, the first transmission belt 13, the third transmission belt 28 and the second transmission belt 27 are arranged in sequence. An elastic hose 19 is arranged between the first transmission belt 13 and the third transmission belt 28, and an elastic hose 19 is also arranged between the third transmission belt 28 and the second transmission belt 27. As Figure 5As shown, one end of the roller shaft 12 is nested in the first transmission belt 13, and the other end of the roller shaft 12 penetrates through the third transmission belt 28 and is nested in the second transmission belt 27. Two rollers 16 are arranged side by side on one roller shaft 12, which improves the synchronization of squeezing two elastic hoses 19 at a time. Compared with a single-tube peristaltic pump, the production efficiency is doubled while the actual occupied space is relatively small.

[0042] 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 an equivalent embodiment with equivalent changes. 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 power transmission linear peristaltic pump, characterized in that: The invention comprises a mounting platform (1), wherein a driving mechanism, a rotating mechanism and a roller tube pressing assembly are arranged on the mounting platform (1), wherein the rotating mechanism is connected to the output end of the driving mechanism, wherein the rotating mechanism comprises an arc segment and a straight segment, wherein the straight segment of the rotating mechanism is arranged on two opposite sides of an elastic hose (19) in a horizontal direction, and a plurality of roller tube pressing assemblies are evenly distributed on the rotating mechanism; under the drive of the driving mechanism, the rotating mechanisms located on both sides of the elastic hose (19) perform synchronous circular rotation to drive the roller tube pressing assembly to rotate synchronously; when the roller tube pressing assembly rotates to the straight segment of the rotating mechanism, the roller tube pressing assembly moves linearly while squeezing the elastic hose (19); when the roller tube pressing assembly rotates to the arc segment of the rotating mechanism, the roller tube pressing assembly releases the elastic hose (19).

2. The power transmission linear peristaltic pump according to claim 1, characterized in that: The driving mechanism comprises a driving component (3) and an external PLC controller; the driving component (3) is mounted on a mounting plate (1), and an output end of the driving component (3) is connected to a rotating mechanism; the driving component (3) is electrically connected to the PLC controller, and the PLC controller controls the operation of the driving component (3).

3. The power transmission linear peristaltic pump according to claim 2, characterized in that: The rotating mechanism comprises a mounting support (4) arranged on a mounting platform (1), and a driven gear (8), a first driven shaft (18), a driving shaft (20), a driving gear (22), a second driven shaft (25), a third driven shaft (26) and a transmission belt assembly arranged on the mounting support (4); the output end of the driving assembly (3) is connected to the driving shaft (20), the driving gear (22) is installed on the driving shaft (20), the driven gear (8) is installed on the first driven shaft (18), and the driving gear (22) is meshed with the driven gear (8) to realize the rotational connection between the driving shaft (20) and the first driven shaft (18); the transmission belt assembly is respectively located at A plurality of roller tube pressing assemblies are evenly distributed on the transmission belt assembly at the upper and lower sides of the elastic hose (19); the driving shaft (20) and the second driven shaft (25) are respectively connected to the two ends of the transmission belt assembly at the lower side of the elastic hose (19); the first driven shaft (18) and the third driven shaft (26) are respectively connected to the two ends of the transmission belt assembly at the upper side of the elastic hose (19); under the drive of the driving assembly (3), the driving shaft (20) rotates and drives the first driven shaft (18), the second driven shaft (25) and the third driven shaft (26) to rotate, so as to realize the rotation of the transmission belt assemblies at the upper and lower sides of the elastic hose (19), thereby driving the roller tube pressing assembly to squeeze or release the elastic hose (19).

4. The power transmission linear peristaltic pump according to claim 3, characterized in that: The transmission belt assembly comprises a first transmission belt (13), a transmission wheel (14) and a second transmission belt (27), wherein the two ends of the first transmission belt (13) and the second transmission belt (27) are respectively connected for transmission via the transmission wheel (14); on the same side of the elastic hose (19), the first transmission belt (13) and the second transmission belt (27) are located at the same horizontal plane, and the two ends of the roller tube pressing assembly are respectively connected to the first transmission belt (13) and the second transmission belt (27), and the roller tube pressing assembly rotates synchronously with the first transmission belt (13) and the second transmission belt (27).

5. The power transmission linear peristaltic pump according to claim 4, characterized in that: The driving assembly (3) 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.

6. The power transmission linear peristaltic pump according to claim 4, characterized in that: The roller pressing tube assembly comprises a roller shaft (12), a third deep groove ball bearing (15), a roller (16) and a third shaft elastic retaining ring (17); the roller (16) is nested on the outside of the roller shaft (12) through the third deep groove ball bearing (15); one end of the roller shaft (12) is nested in the first transmission belt (13), and the other end of the roller shaft (12) is nested in the second transmission belt (27); and the third shaft elastic retaining ring (17) is provided at the connection between the roller shaft (12) and the first transmission belt (13) and the second transmission belt (27).

7. The power transmission linear peristaltic pump according to claim 6, characterized in that: The transmission belt assembly further comprises a third transmission belt (28). On the same side of the elastic hose (19), the first transmission belt (13), the second transmission belt (27) and the third transmission belt (28) are located at the same horizontal plane, and roller tube pressing assemblies are correspondingly connected between the first transmission belt (13) and the third transmission belt (28) and between the second transmission belt (27) and the third transmission belt (28) to achieve simultaneous squeezing of two elastic hoses (19).

8. The power transmission linear peristaltic pump according to claim 7, characterized in that: The first driven shaft (18), the driving shaft (20), the second driven shaft (25) and the third driven shaft (26) all pass through the first bearing mounting seat (7) and the second bearing mounting seat (11); the first shaft elastic retaining ring (5) and the first deep groove ball bearing (6) are provided at the connection between the first driven shaft (18), the driving shaft (20), the second driven shaft (25) and the third driven shaft (26) and the first bearing mounting seat (7); the second shaft elastic retaining ring (9) and the second deep groove ball bearing (10) are provided at the connection between the first driven shaft (18), the driving shaft (20), the second driven shaft (25) and the third driven shaft (26) and the second bearing mounting seat (11).

9. The power transmission linear peristaltic pump according to claim 7, characterized in that: The rollers (16) are installed at three equally divided positions on the transmission belt.

10. The power transmission linear peristaltic pump according to claim 7, characterized in that: When the elastic hose (19) is extruded, the distance h between the upper layer and the lower layer of the tube wall of the elastic hose (19) is 2×(70% to 90%) t, where t is the tube wall thickness of the elastic hose (19), mm.

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