Peristaltic pump

Abstract

The utility model relates to a peristaltic pump which comprises a shell, a pressed pipe fitting and a rolling part, and a containing cavity is formed in the shell; at least part of the pressed pipe fitting is constructed to be located in the containing cavity; the rolling part is rotationally arranged in the containing cavity and comprises a rolling frame and at least one roller, the rolling frame comprises a driven gear and a supporting part which are integrally connected, and the driven gear is configured to be controlled by the driving device to drive the rolling part to rotate; the roller is configured to be eccentrically arranged on the rolling frame and is configured to exert extrusion force on the pressed pipe fitting while rotating along with the rolling frame. According to the peristaltic pump, the roller is directly arranged between the driven gear and the supporting part of the rolling frame, the positioning precision of the roller can be effectively guaranteed, the roller is directly arranged between the driven gear and the supporting part of the rolling frame, and a supporting plate does not need to be additionally arranged between the driven gear and the roller; therefore, the overall thickness of the peristaltic pump can be effectively reduced, and miniaturization of the peristaltic pump is facilitated.

Description

Technical Field

[0001] The present disclosure relates to the field of conveying equipment, and more specifically, to a peristaltic pump. Background Art

[0002] A peristaltic pump is a pump that transports fluid by alternately squeezing and releasing an elastic delivery hose. Due to its simple structure, separation of fluid and pump body, and wide range of applications, it has been widely used in various industries.

[0003] Due to structural and design limitations, existing peristaltic pumps commonly suffer from technical drawbacks such as complex structure, large size, and poor stability and reliability, limiting their application. For example, the driven gear in the transmission mechanism of existing peristaltic pumps is separated from the hose roller mechanism. This not only easily results in low positioning accuracy of the transmission and hose roller mechanisms, but also requires a support plate, which makes the peristaltic pump bulky and difficult to miniaturize. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the present disclosure provides a peristaltic pump.

[0005] According to a first aspect of the present disclosure, there is provided a peristaltic pump comprising:

[0006] a housing, wherein a receiving cavity is provided in the housing;

[0007] a pressurized pipe, at least a portion of which is configured to be located within the accommodating cavity;

[0008] A rolling member is rotatably arranged in the accommodating cavity and includes a rolling frame and at least one roller. The rolling frame includes a driven gear and a support portion that are integrally connected. The driven gear is configured to be controlled by a driving device to drive the rolling member to rotate; the roller is constructed to be eccentrically arranged between the driven gear and the support portion of the rolling frame, and is constructed to apply pressure and extrusion force to the pressurized pipe while revolving with the rolling frame.

[0009] In one embodiment of the present disclosure, one end of the roller cooperates with the end face of the driven gear, and the other end cooperates with the support portion, and is rotatably arranged on the roller press frame. In the process of the roller applying pressure and extrusion force to the pressurized pipe, the roller rotates relative to the roller press frame due to the friction force of the pressurized pipe.

[0010] In one embodiment of the present disclosure, a mounting groove is formed between the driven gear and the support portion, a first matching groove is provided on the end surface of the driven gear facing the support portion, and a matching hole is provided on the support portion;

[0011] The roller includes a pressure roller body and a roller shaft. The pressure roller body is constructed to be located in the installation groove. The roller shaft is constructed to pass through the matching hole and the pressure roller body and be inserted into the first matching groove so that the roller is rotatably set on the rolling member.

[0012] In one embodiment of the present disclosure, an active portion is provided on the output shaft of the driving device, and the active portion is disposed in the accommodating cavity and meshes with the driven gear to drive the rolling member to rotate.

[0013] In one embodiment of the present disclosure, the extension direction of the output shaft of the driving device is perpendicular to the axial direction of the driven gear; the active part is constructed as a worm, and the driven gear is a helical gear to form a staggered axis gear pair with the active part.

[0014] In one embodiment of the present disclosure, a motor slot is provided on the housing; and the driving device is configured to be fixedly installed in the motor slot.

[0015] In one embodiment of the present disclosure, the roller press frame is provided with a through hole along the axial direction;

[0016] A first positioning member and a second positioning member are respectively provided on the cavity wall of the accommodating cavity at positions corresponding to the openings on both sides of the through hole. The first positioning member and the second positioning member are both constructed to be inserted into the through hole so that the roller press frame rotates around the axis where the first positioning member and the second positioning member are located.

[0017] In one embodiment of the present disclosure, the roller press frame is constructed to be placed in a vertical direction; the bottom of the roller is supported on the bottom wall of the accommodating cavity, and the top of the roller press frame is gap-fitted with the top wall of the accommodating cavity.

[0018] In one embodiment of the present disclosure, a first pipe opening and a second pipe opening are provided on the shell, and the pressure pipe is constructed to pass through the first pipe opening and the second pipe opening so that part of it is located in the accommodating cavity and part of it is located outside the shell, and the first pipe joint and the second pipe joint are respectively provided at both ends located outside the shell.

[0019] In one embodiment of the present disclosure, the circumferential inner side surfaces of the first pipe opening and the second pipe opening are provided with limiting grooves;

[0020] The two ends of the pressure pipe are respectively provided with a first limiting member and a second limiting member. The limiting member is configured to be clamped in the limiting groove of the first pipe opening, and the second limiting member is configured to be clamped in the limiting groove of the second pipe opening.

[0021] During the operation of the peristaltic pump disclosed herein, the driven gear on the roller frame can be controlled by the driving device to rotate in the accommodating chamber of the shell, thereby driving the eccentrically arranged roller on the roller frame to revolve. The roller can apply pressure to the pressurized pipe while rotating with the roller frame, thereby circulating and squeezing the pressurized pipe in the accommodating chamber, forming a pressure difference in the pressurized pipe, and achieving the purpose of pumping fluid.

[0022] Compared with the existing peristaltic pump, the roller frame in the peristaltic pump disclosed in the present invention includes an integrally connected driven gear and a support portion, and the roller is directly arranged between the driven gear and the support portion of the roller frame, which can effectively ensure the positioning accuracy of the roller and ensure that after the roller is installed on the roller frame, its own axis is parallel to the rotation axis of the roller frame, thereby ensuring that the roller applies pressure to the pressurized pipe while rotating with the roller frame; moreover, the roller is directly arranged between the driven gear and the support portion of the roller frame, and there is no need to provide a separate support plate between the driven gear and the roller, thereby effectively reducing the overall thickness of the peristaltic pump disclosed in the present invention, and facilitating the miniaturization of the peristaltic pump disclosed in the present invention.

[0023] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0025] Figure 1 is an exploded schematic diagram of a peristaltic pump provided by an embodiment of the present disclosure;

[0026] Figure 2 is another exploded schematic diagram of the peristaltic pump provided by an embodiment of the present disclosure;

[0027] Figure 3 is a cross-sectional schematic diagram of a peristaltic pump provided by an embodiment of the present disclosure;

[0028] Figure 4 is another cross-sectional schematic diagram of the peristaltic pump provided by an embodiment of the present disclosure;

[0029] Figure 5 is another cross-sectional schematic diagram of the peristaltic pump provided by an embodiment of the present disclosure;

[0030] Figures 1 to 5 The corresponding relationship between the component names and reference numerals is as follows:

[0031] 10. Shell; 11. Accommodating chamber; 12. Motor slot; 13. First pipe opening; 14. Second pipe opening; 15. Limiting slot; 16. First positioning member; 17. Second positioning member; 20. Pressure pipe fitting; 21. First pipe joint; 22. Second pipe joint; 23. First limiting member; 24. Second limiting member; 30. Rolling member; 31. Rolling frame; 311. Driven gear; 312. Supporting part; 313. Mounting slot; 314. First matching slot; 315. Matching hole; 316. Through hole; 32. Roller; 321. Pressing roller body; 322. Roller shaft; 40. Driving device; 41. Active part. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present disclosure. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0033] The following description sets forth numerous specific details to facilitate a thorough understanding of the present disclosure. However, the present disclosure can be implemented in many other ways than those described herein, and those skilled in the art may make similar generalizations without violating the scope of the present disclosure. Therefore, the present disclosure is not limited to the specific implementations disclosed below. Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail, but, where appropriate, such techniques, methods, and apparatus should be considered part of the specification.

[0034] The terms used in one or more embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit one or more embodiments of the present disclosure. The singular forms "a", "the", and "the" used in one or more embodiments of the present disclosure and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used in one or more embodiments of the present disclosure refers to and includes any or all possible combinations of one or more associated listed items.

[0035] It should be understood that although the terms first, second, etc. may be used to describe various information in one or more embodiments of the present disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of one or more embodiments of the present disclosure, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determination". In this article, "upper", "lower", "front", "back", "left", "right", etc. are only used to indicate the relative positional relationship between the relevant parts, rather than to limit the absolute position of these relevant parts. In this article, "equal", "same", etc. are not strict mathematical and / or geometric limitations, but also include errors that can be understood by those skilled in the art and are allowed by manufacturing or use. Unless otherwise stated, the numerical ranges herein include not only the entire range within its two endpoints, but also several sub-ranges contained therein.

[0036] The present disclosure provides a peristaltic pump, which includes a shell, a pressure-bearing pipe and a roller; wherein a accommodating chamber is provided in the shell; at least part of the pressure-bearing pipe is constructed to be located in the accommodating chamber; the roller is rotatably arranged in the accommodating chamber, and includes a roller frame and at least one roller, the roller frame includes an integrally connected driven gear and a support portion, the driven gear is configured to be controlled by a driving device to drive the roller to rotate; the roller is constructed to be eccentrically arranged between the driven gear and the support portion of the roller frame, and is constructed to apply pressure and extrusion force to the pressure-bearing pipe while revolving with the roller frame.

[0037] During the operation of the peristaltic pump disclosed herein, the driven gear on the roller frame can be controlled by the driving device to rotate in the accommodating chamber of the shell, thereby driving the eccentrically arranged roller on the roller frame to revolve. The roller can apply pressure to the pressurized pipe while rotating with the roller frame, thereby circulating and squeezing the pressurized pipe in the accommodating chamber, forming a pressure difference in the pressurized pipe, and achieving the purpose of pumping fluid.

[0038] Compared with the existing peristaltic pump, the roller frame in the peristaltic pump disclosed in the present invention includes an integrally connected driven gear and a support portion, and the roller is directly arranged between the driven gear and the support portion of the roller frame, which can effectively ensure the positioning accuracy of the roller and ensure that after the roller is installed on the roller frame, its own axis is parallel to the rotation axis of the roller frame, thereby ensuring that the roller applies pressure to the pressurized pipe while rotating with the roller frame; moreover, the roller is directly arranged between the driven gear and the support portion of the roller frame, and there is no need to provide a separate support plate between the driven gear and the roller, thereby effectively reducing the overall thickness of the peristaltic pump disclosed in the present invention, and facilitating the miniaturization of the peristaltic pump disclosed in the present invention.

[0039] For ease of understanding, refer to Figures 1 to 5The structure and working principle of the peristaltic pump disclosed in the present invention are described in detail.

[0040] like Figure 1 and Figure 2 As shown, the present disclosure provides a peristaltic pump, which includes a housing 10, a pressure-bearing pipe 20 and a roller 30; wherein a receiving cavity 11 is provided in the housing 10; at least part of the pressure-bearing pipe 20 is configured to be located in the receiving cavity 11. Figures 3 to 5 As shown, the rolling member 30 is rotatably arranged in the accommodating cavity 11, and includes a rolling frame 31 and at least one roller 32. The rolling frame 31 includes a driven gear 311 and a support portion 312 that are integrally connected. The driven gear 311 is configured to be controlled by the driving device 40 to drive the rolling member 30 to rotate; the roller 32 is constructed to be eccentrically arranged between the driven gear 311 and the support portion 312 of the rolling frame 31, and is constructed to apply pressure and extrusion force to the pressurized pipe 20 while revolving with the rolling frame 31.

[0041] During the operation of the peristaltic pump disclosed herein, the driven gear 311 on the roller frame 31 can be controlled by the driving device 40 to rotate in the accommodating chamber 11 of the shell 10, thereby driving the eccentrically arranged roller 32 on the roller frame 31 to revolve. While the roller 32 revolves with the roller frame 31, it can apply pressure to the pressurized pipe 20, thereby circulating and squeezing the pressurized pipe 20 in the accommodating chamber 11, forming a pressure difference in the pressurized pipe 20, and achieving the purpose of pumping fluid.

[0042] The cam 312 is a substantially parallel plate 314 arranged on the support frame 312 of the roller 32 and the support frame 313 is provided with a plurality of rollers 32 connected to each other, so that the cam 312 can be easily moved after the cam 312 is moved.

[0043] Specifically, such as Figure 3 As shown, in one embodiment of the present disclosure, one end of the roller 32 cooperates with the end face of the driven gear 311, and the other end cooperates with the support portion 312, and is rotatably arranged on the roller press frame 31. In the process of the roller 32 applying pressure and extrusion force to the pressurized pipe 20, the friction force of the pressurized pipe 20 rotates relative to the roller press frame 31.

[0044] The cam 32 is provided with a plurality of support plates 312, 313 and 314, which are provided on the support plates 312 and 314 of the drive gear 31. The cam 32 is provided with a plurality of support plates 312, 313 and 314, which are provided on the support plates 312 and 314, respectively.

[0045] Specifically, such as Figure 3 As shown, in one embodiment of the present disclosure, a mounting groove 313 is formed between the driven gear 311 and the support portion 312, a first matching groove 314 is provided on the end face of the driven gear 311 facing the support portion 312, and a matching hole 315 is provided on the support portion 312; the roller 32 includes a pressure roller body 321 and a roller shaft 322, the pressure roller body 321 is constructed to be located in the mounting groove 313, and the roller shaft 322 is constructed to pass through the matching hole 315 and the pressure roller body 321, and be inserted into the first matching groove 314, so that the roller 32 is rotatably set on the rolling member 30.

[0046] In this way, during the installation process of the peristaltic pump disclosed in the present invention, the pressure roller body 321 is first placed in the installation groove 313, and then the roller shaft 322 is passed through the matching hole 315 and the pressure roller body 321, and inserted into the first matching groove 314, so that the pressure roller body 321 is installed on the roller pressure frame 31, and the pressure roller body 321 and the roller shaft 322 can rotate relative to each other to ensure that the pressure roller body 321 can rotate freely relative to the roller pressure frame 31.

[0047] like Figure 2 As shown, in one embodiment of the present disclosure, an active portion 41 is provided on the output shaft of the drive device 40. The active portion 41 is disposed within the accommodating chamber 11 and meshes with the driven gear 311 to drive the roller 30 to rotate. Thus, during operation of the peristaltic pump of the present disclosure, the output shaft of the drive device 40 rotates, driving the active shaft to rotate. Because the active portion 41 is disposed within the accommodating chamber 11 and meshes with the driven gear 311, the roller 30 can be driven to rotate.

[0048] like Figure 5As shown, in one embodiment of the present disclosure, the roller member 30 includes at least two rollers 32, each of which is equal in size and rotationally symmetrical about the axis of the roller frame 31. By providing the roller member 30 with at least two rollers 32 of equal size and rotationally symmetrical about the axis of the roller frame 31, each roller 32 can alternately apply pressure to the pressurized tubular member 20, cyclically squeezing the pressurized tubular member 20 within the accommodating chamber 11, circulating a pressure differential within the pressurized tubular member 20, and effectively improving the operating efficiency of the peristaltic pump of the present disclosure.

[0049] like Figure 2 As shown, in one embodiment of the present disclosure, the extension direction of the output shaft of the driving device 40 is perpendicular to the axial direction of the driven gear 311; the active part 41 is constructed as a worm, and the driven gear 311 is a helical gear, so as to form a staggered axis gear pair with the active part 41. Since the extension direction of the output shaft of the driving device 40 is perpendicular to the axial direction of the driven gear 311; the active part 41 is a worm, and the driven gear 311 is a helical gear, so as to form a staggered axis gear pair with the active part 41, not only can the transmission between the active part 41 and the driven gear 311 be smooth, but also more compact, which can effectively shorten the overall length of the peristaltic pump of the present disclosure, thereby facilitating the layout of the peristaltic pump of the present disclosure.

[0050] like Figure 1 and Figure 2 As shown, in one embodiment of the present disclosure, a motor slot 12 is provided on the housing 10; and a drive device 40 is configured to be fixedly installed in the motor slot 12. By providing the motor slot 12 on the housing 10 and fixing the drive device 40 in the motor slot 12, the peristaltic pump of the present disclosure can be made into an integrated structure, which not only facilitates layout but also helps expand the application scenarios of the peristaltic pump of the present disclosure.

[0051] like Figure 3 As shown, in one embodiment of the present disclosure, a through-hole 316 is provided in the axial direction of the roller press frame 31; a first positioning member 16 and a second positioning member 17 are provided on the wall of the accommodating chamber 11 at positions corresponding to the openings on either side of the through-hole 316. The first positioning member 16 and the second positioning member 17 are configured to be inserted into the through-hole 316 to enable the roller press frame 31 to rotate about the axis of the first positioning member 16 and the second positioning member 17. By providing the first positioning member 16 and the second positioning member 17 on both sides of the openings on either side of the through-hole 316 of the roller press frame 31, the roller press frame 31 can rotate about the axis of the first positioning member 16 and the second positioning member 17. This makes the overall structure simple and easy to manufacture.

[0052] Further, such as Figure 3As shown, in one embodiment of the present disclosure, the roller frame 31 is configured for vertical placement; the bottom of the roller member 30 is supported on the bottom wall of the accommodating chamber 11, and the top of the roller frame 31 is clearance-matched with the top wall of the accommodating chamber 11. Because the bottom of the roller member 30 is supported on the bottom wall of the accommodating chamber 11 and the top of the roller frame 31 is clearance-matched with the top wall of the accommodating chamber 11, a certain vertical clearance is ensured for the roller frame 31, thereby effectively reducing rotational friction between the ends of the roller frame 31 and the wall of the accommodating chamber 11, thereby increasing the service life of the peristaltic pump of the present disclosure.

[0053] like Figure 1 and Figure 2 As shown, in one embodiment of the present disclosure, the housing 10 is provided with a first pipe opening 13 and a second pipe opening 14. The pressure-bearing pipe 20 is constructed to penetrate the first pipe opening 13 and the second pipe opening 14 so that a portion thereof is located within the accommodating cavity 11 and a portion thereof is located outside the housing 10. A first pipe joint 21 and a second pipe joint 22 are respectively provided at the two ends located outside the housing 10. Thus, during use of the peristaltic pump of the present disclosure, one of the first pipe joint 21 and the second pipe joint 22 is connected to the liquid outlet, and the other is connected to the liquid inlet. External liquid flows into the pressure-bearing pipe 20 from the liquid inlet, and then continuously flows to the liquid outlet under the action of the pressure differential formed by the circulation of the pressure-bearing pipe 20 during the rotation of the roller press frame 31.

[0054] Furthermore, in one embodiment of the present disclosure, a limiting groove 15 is provided on the circumferential inner side surface of the first pipe opening 13 and the second pipe opening 14; the two ends of the pressure pipe fitting 20 are respectively provided with a first limiting member 23 and a second limiting member 24, and the limiting member is constructed to be clamped in the limiting groove 15 of the first pipe opening 13, and the second limiting member 24 is constructed to be clamped in the limiting groove 15 of the second pipe opening 14.

[0055] By respectively sleeved with a first limit member 23 and a second limit member 24 at both ends of the pressure pipe fitting 20, the first limit member 23 and the second limit member 24 are respectively clamped in the limit groove 15 of the first pipe mouth 13 and the limit groove 15 of the second pipe mouth 14, the pressure pipe fitting 20 can be effectively fixed in the accommodating cavity 11 of the peristaltic pump disclosed in the present invention, preventing the pressure pipe fitting 20 from sliding relative to the working position under the action of the roller 32 during the operation of the peristaltic pump disclosed in the present invention, thereby effectively ensuring the normal operation of the peristaltic pump disclosed in the present invention.

[0056] Application Scenario

[0057] The present disclosure provides a peristaltic pump, which includes a shell 10, a pressure pipe 20 and a roller 30; wherein, a accommodating chamber 11 is provided in the shell 10; at least part of the pressure pipe 20 is constructed to be located in the accommodating chamber 11; the roller 30 is rotatably arranged in the accommodating chamber 11, and includes a roller frame 31 and at least one roller 32, the roller frame 31 includes an integrally connected driven gear 311 and a support portion 312, the driven gear 311 is configured to be controlled by a driving device 40 to drive the roller 30 to rotate; the roller 32 is constructed to be eccentrically arranged between the driven gear 311 and the support portion 312 of the roller frame 31, wherein the axis of the roller 32 is not concentric with the axis of the driven gear 311, and is constructed to apply pressure and extrusion force to the pressure pipe 20 while revolving with the roller frame 31.

[0058] During the operation of the peristaltic pump disclosed herein, the driven gear 311 on the roller frame 31 can be controlled by the driving device 40 to rotate in the accommodating chamber 11 of the shell 10, thereby driving the eccentrically arranged roller 32 on the roller frame 31 to revolve. While the roller 32 revolves with the roller frame 31, it can apply pressure to the pressurized pipe 20, thereby circulating and squeezing the pressurized pipe 20 in the accommodating chamber 11, forming a pressure difference in the pressurized pipe 20, and achieving the purpose of pumping fluid.

[0059] The cam 312 is a substantially parallel plate 314 arranged on the support frame 312 of the roller 32 and the support frame 313 is provided with a plurality of rollers 32 connected to each other, so that the cam 312 can be easily moved after the cam 312 is moved.

[0060] The embodiments of the present disclosure have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terms used herein are selected to best explain the principles of the embodiments, their practical applications, or technical improvements in the marketplace, or to enable other persons skilled in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A peristaltic pump, characterized in that: include: A housing (10), wherein a receiving cavity (11) is provided in the housing (10); A pressure-bearing pipe (20), at least a portion of the pressure-bearing pipe (20) is configured to be located within the accommodating cavity (11); A rolling member (30) is rotatably arranged in the accommodating cavity (11) and comprises a rolling frame (31) and at least one roller (32); the rolling frame (31) comprises a driven gear (311) and a support portion (312) connected in one piece; the driven gear (311) is configured to be controlled by a driving device (40) to drive the rolling member (30) to rotate; the roller (32) is constructed to be eccentrically arranged between the driven gear (311) and the support portion (312) of the rolling frame (31), and is constructed to apply a compressive force to the pressurized pipe (20) while revolving with the rolling frame (31).

2. The peristaltic pump according to claim 1, characterized in that One end of the roller (32) cooperates with the end surface of the driven gear (311), and the other end cooperates with the support portion (312), and is rotatably arranged on the roller pressing frame (31). In the process of applying pressure and extrusion force to the pressurized pipe (20), the roller (32) rotates relative to the roller pressing frame (31) due to the friction force of the pressurized pipe (20).

3. The peristaltic pump according to claim 2, characterized in that A mounting groove (313) is formed between the driven gear (311) and the support portion (312); a first matching groove (314) is provided on the end surface of the driven gear (311) facing the support portion (312); and a matching hole (315) is provided on the support portion (312); The roller (32) includes a roller body (321) and a roller shaft (322), wherein the roller body (321) is configured to be located in the mounting groove (313), and the roller shaft (322) is configured to pass through the matching hole (315) and the roller body (321), and to be inserted into the first matching groove (314), so that the roller (32) is rotatably arranged on the rolling member (30).

4. The peristaltic pump according to claim 1, characterized in that An active portion (41) is provided on the output shaft of the driving device (40). The active portion (41) is disposed in the accommodating cavity (11) and meshes with the driven gear (311) to drive the rolling member (30) to rotate.

5. The peristaltic pump according to claim 4, characterized in that The extension direction of the output shaft of the driving device (40) is perpendicular to the axial direction of the driven gear (311); the driving part (41) is constructed as a worm, and the driven gear (311) is a helical gear to form a staggered axis gear pair with the driving part (41).

6. The peristaltic pump according to claim 5, characterized in that A motor slot (12) is provided on the housing (10); and the driving device (40) is configured to be fixedly installed in the motor slot (12).

7. The peristaltic pump according to claim 1, characterized in that The roller pressing frame (31) is provided with a through hole (316) along the axial direction; A first positioning member (16) and a second positioning member (17) are respectively provided on the cavity wall of the accommodating cavity (11) at positions corresponding to the openings on both sides of the through hole (316). The first positioning member (16) and the second positioning member (17) are both constructed to be inserted into the through hole (316) so that the roller pressing frame (31) rotates around the axis of the first positioning member (16) and the second positioning member (17).

8. The peristaltic pump according to claim 7, characterized in that The roller pressing frame (31) is constructed to be placed in a vertical direction; the bottom of the roller pressing member (30) is supported on the bottom wall of the accommodating cavity (11), and the top of the roller pressing frame (31) is clearance-matched with the top wall of the accommodating cavity (11).

9. The peristaltic pump according to claim 1, characterized in that The shell (10) is provided with a first pipe opening (13) and a second pipe opening (14); the pressure pipe (20) is constructed to penetrate the first pipe opening (13) and the second pipe opening (14) so ​​that a portion of the pressure pipe is located in the accommodating cavity (11) and a portion of the pressure pipe is located outside the shell (10); and a first pipe joint (21) and a second pipe joint (22) are respectively provided at both ends located outside the shell (10).

10. The peristaltic pump according to claim 9, characterized in that The first pipe opening (13) and the second pipe opening (14) are provided with limiting grooves (15) on the circumferential inner side surfaces; A first limiting member (23) and a second limiting member (24) are respectively sleeved on both ends of the pressure pipe (20); the limiting member is configured to be clamped in the limiting groove (15) of the first pipe opening (13); and the second limiting member (24) is configured to be clamped in the limiting groove (15) of the second pipe opening (14).

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