Peristaltic pump and drive module

Abstract

The utility model relates to a peristaltic pump and drive module. The drive module comprises: a motor; a worm, connected with the motor and driven to rotate by the motor; a clutch gear set, comprising a driving wheel and a driven wheel, wherein the worm is engaged with the driving wheel to drive the driving wheel to rotate, the driving wheel is configured to drive the driven wheel to rotate in one direction, and the one direction is a first rotation direction; the driven wheel is configured to be locked by the driving wheel when rotating in a second rotation direction and to be disengaged from the locking of the driving wheel when rotating in the first rotation direction, wherein the second rotation direction is the opposite direction of the first rotation direction. The utility model can manually rotate the pump head assembly to replace the pump tube and provide a reverse pressure-bearing function to prevent liquid leakage.

Description

Technical Field

[0001] This utility model relates to a peristaltic pump and a drive module. Background Technology

[0002] Peristaltic pumps have wide applications in the home appliance and industrial sectors, such as delivering detergent in washing machines and toothpaste in toothpaste production lines. A peristaltic pump is a positive displacement pump that delivers fluid by periodically squeezing and releasing a flexible tube.

[0003] Peristaltic pumps typically use one or more rotating rollers or cams to compress the pump tubing installed within the pump body. As the rollers rotate and compress the tubing, the cross-sectional area of ​​the compressed portion decreases, forcing the fluid inside to move forward. When the rollers release, the tubing returns to its original shape, creating a negative pressure zone that attracts more fluid to the rear of the tubing. As the rollers continue to rotate, the compression-release cycle repeats, achieving continuous fluid delivery. Therefore, the pump tubing is a critical component of the peristaltic pump and is a wear part. In practical use, the pump tubing often collapses and becomes inoperable after prolonged operation; in such cases, the pump tubing should be replaced promptly.

[0004] Currently, it is virtually impossible to manufacture peristaltic pumps with a completely lockable bidirectional pump head, as this would restrict the operation of the peristaltic pump in various aspects. However, peristaltic pumps may also have the risk of leakage. Utility Model Content

[0005] At least one embodiment of this utility model provides a drive module for a peristaltic pump, comprising: a motor; a worm gear connected to and driven to rotate by the motor; and a clutch gear set including a driving gear and a driven gear, wherein the worm gear meshes with the driving gear to drive the driving gear to rotate, the driving gear is configured to drive the driven gear to rotate in one direction, the one direction being a first rotation direction; the driven gear is configured to be locked by the driving gear when rotating in a second rotation direction, and disengaged from the locking by the driving gear when rotating in the first rotation direction, wherein the second rotation direction is the opposite direction of the first rotation direction.

[0006] For example, in a drive module provided in at least one embodiment of the present invention, the driving wheel is provided with a first shaft hole, the driven wheel is provided with a second shaft hole, and the first shaft hole and the second shaft hole are coaxially arranged so that the driving wheel and the driven wheel are coaxially installed.

[0007] For example, in a drive module provided in at least one embodiment of the present invention, the first rotation direction is the working direction of the peristaltic pump.

[0008] For example, at least one embodiment of the present invention provides a drive module that further includes an output gear, wherein the output gear is connected to the driven wheel via a transmission; an output shaft is provided on the output gear, and the output shaft is connected to the pump head assembly of the peristaltic pump via a drive connection.

[0009] For example, in a drive module provided in at least one embodiment of the present invention, the driving wheel includes a driving gear body and a pawl. The pawl is disposed on the annular wall of the driving gear body and extends inward. The extension direction of the pawl is offset relative to the radial line of the driving gear body. The driven wheel is provided with a stop groove that cooperates with the pawl.

[0010] For example, at least one embodiment of the present invention provides a drive module that further includes a double gear, wherein the double gear includes a first sub-gear and a second sub-gear fixedly connected to the first sub-gear, the first sub-gear meshing with the output gear, and the second sub-gear meshing with the driven gear.

[0011] For example, in a drive module provided in at least one embodiment of the present invention, the driven wheel includes a driven gear meshing part and a driven column fixedly connected to the driven gear meshing part, wherein the driven gear meshing part meshes with the second sub-gear, and the driven column has a groove wall that protrudes outward relative to the side of the driven column, and the groove wall and the side of the driven column form the stop groove.

[0012] For example, in a drive module provided in at least one embodiment of the present invention, the number of stop grooves is N, and the N stop grooves are evenly spaced apart in the circumferential direction of the driven wheel, wherein N is an integer greater than 1; the number of pawls is N, and the N pawls are evenly spaced apart in the circumferential direction of the driving gear body.

[0013] At least one embodiment of the present invention also provides a peristaltic pump, comprising: a pump body module and a drive module as described above, wherein the pump body module is connected to the drive module, the pump body module comprising a pump housing, a pump cover, a pump tube assembly, and a pump head assembly; the pump housing and the pump cover cooperate to accommodate the pump head assembly and the pump tube assembly, the pump head assembly being configured to be driven by the drive module to rotate in order to squeeze the pump tube assembly.

[0014] For example, in a peristaltic pump provided in at least one embodiment of the present invention, the pump head assembly is provided with a drive connection portion, the drive connection portion having a hole for drive connection with the output shaft of the drive module. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 The diagram shows the external appearance of a peristaltic pump provided for some embodiments of this utility model.

[0017] Figures 2-3 An exploded view of a peristaltic pump provided for some embodiments of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the drive module provided in some embodiments of the present invention.

[0019] Figure 5 The diagram shows the external appearance of a pump module provided for some embodiments of this utility model.

[0020] Figure 6 An exploded view of the pump body module provided in some embodiments of this utility model.

[0021] Figure 7 This is a schematic diagram of the internal structure of the drive module provided in some embodiments of the present invention.

[0022] Figure 8 This is a schematic diagram of the gear assembly of the drive module provided in some embodiments of the present invention.

[0023] Figure 9 The diagram shows the structure of the driving wheel and driven wheel provided in some embodiments of this utility model. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of this utility model shall have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. It should also be understood that terms such as those defined in a common dictionary shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and shall not be interpreted in an idealized or highly formalized sense, unless expressly defined in the embodiments of this utility model.

[0026] The terms "first," "second," and similar words used in the embodiments of this utility model do not indicate any order, quantity, or importance, but are only used to distinguish different components. Terms such as "a," "one," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. Similarly, terms such as "including" or "comprising" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "inner," "outer," "upper," and "lower" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. The drawings in this utility model are not strictly drawn to scale; the specific dimensions and quantity of each structure can be determined according to actual needs. The drawings described in this utility model are only structural schematic diagrams.

[0027] This invention reveals that in some technical solutions, peristaltic pumps often require manual assembly and disassembly of the pump tubing. For example, installation requires manually rotating a knob to turn the pump head assembly, and disassembly also requires manual rotation of the pump head assembly. Therefore, to facilitate convenient and / or effortless replacement of the pump tubing, it is desirable that the pump head assembly of the peristaltic pump, when not in operation, should not be locked but should be able to rotate. Consequently, the transmission mechanism of the peristaltic pump's drive module cannot be bidirectionally self-locking (bidirectional self-locking means that the output shaft of the drive module cannot be manually rotated regardless of whether it is clockwise or counterclockwise). Furthermore, this invention aims to reduce the risk of leakage in the peristaltic pump under these conditions, for example, by enabling the peristaltic pump to withstand a certain amount of reverse hydraulic pressure (i.e., the opposite direction of the pump's delivery direction) when not in operation to prevent leakage.

[0028] In response, at least one embodiment of this utility model provides a drive module for a peristaltic pump, comprising: a motor; a worm gear connected to and driven to rotate by the motor; and a clutch gear set including a driving gear and a driven gear, wherein the worm gear meshes with the driving gear to drive the driving gear to rotate, the driving gear is configured to drive the driven gear to rotate in one direction, the one direction being a first rotation direction; the driven gear is configured to be locked by the driving gear when rotating in a second rotation direction, and disengaged from the locking of the driving gear when rotating in the first rotation direction, wherein the second rotation direction is the opposite direction of the first rotation direction.

[0029] At least one embodiment of the present invention also provides a peristaltic pump, comprising: a pump body module and a drive module as described above, wherein the pump body module is connected to the drive module, and the pump body module includes a pump housing, a pump cover, a pump tube assembly and a pump head assembly; the pump housing and the pump cover cooperate to accommodate the pump head assembly and the pump tube assembly, and the pump head assembly is configured to be driven by the drive module to rotate in order to squeeze the pump tube assembly.

[0030] The present invention, as described in the above embodiments, designs a novel drive module and peristaltic pump. By cleverly designing a clutch gear set in the drive module of the peristaltic pump, the user can manually rotate the pump head assembly in the first rotation direction (e.g., the working direction of the peristaltic pump), while locking the pump head assembly in the opposite direction. Thus, the present invention can both manually rotate the pump head assembly to replace the pump tube and provide a reverse pressure-bearing function to prevent leakage.

[0031] In embodiments of this utility model, the term "inner side" or "inward" refers to the side closer to the centerline of the device or component, and the term "outer side" or "outward" refers to the side further away from the centerline of the device or component. In embodiments of this utility model, "axial direction" refers to the direction of the central axis of the device or component. It should be noted that these definitions are for convenience of expression only and should not be construed as limitations of this utility model.

[0032] The embodiments and examples of this utility model will now be described in detail with reference to the accompanying drawings.

[0033] Figure 1 The diagram shows the external appearance of a peristaltic pump provided for some embodiments of this utility model. Figures 2-3 An exploded view of a peristaltic pump provided for some embodiments of this utility model.

[0034] For example, such as Figures 1-3 As shown, at least one embodiment of the present invention provides a peristaltic pump 1, including a pump body module 11 and a drive module 14 connected to the pump body module 11. For example, the pump body module 11 and the drive module 14 are fastened by a connector 13 (e.g., screws).

[0035] Figure 4This is a schematic diagram of the structure of the drive module provided in some embodiments of the present invention. Figure 5 The diagram shows the external appearance of a pump module provided for some embodiments of this utility model. Figure 6 An exploded view of the pump body module provided in some embodiments of this utility model.

[0036] For example, such as Figure 5 and Figure 6 As shown, the pump body module 11 includes: a pump housing 300, a pump cover 400, a pump pipe assembly 200, and a pump head assembly 100. The pump housing 300 and the pump cover 400 cooperate to accommodate the pump head assembly 100 and the pump pipe assembly 200.

[0037] For example, such as Figure 1 and Figure 6 As shown, the pump pipe assembly 200 includes a pump pipe 210 and connectors 220 connected to the inlet and outlet of the pump pipe 210, for example, Figure 1 In the diagram, E1 indicates the outlet, and E2 indicates the inlet. The connector 220 is used to connect the pump tube to external piping. For example, a connector 220 is inserted into both the inlet and outlet of the pump tube 210. The pump head assembly 100 is configured to be driven to rotate by the drive module 14 to compress the pump tube 210. For example, the pump head assembly 100 is located within the pump housing 300 and rotates relative to the pump housing 300. For example, a corresponding portion of the pump head assembly 100 can form a rotatable connection with the pump cover 400.

[0038] In an embodiment of this utility model, after the peristaltic pump 1 is successfully installed, the pump head assembly 100 is driven to rotate by the drive module 14, thereby squeezing the pump tube 210 to achieve the liquid pumping function. For example, the pump tube 210 is located between the pump head assembly 100 and the pump housing 300, and the pump body module 11 drives the rollers 101 in the pump head assembly 100 to squeeze the pump tube 210 under the drive of the drive module 14.

[0039] For example, such as Figure 4 As shown, the drive module 14 may include a motor 402, a gear transmission component 403, an output shaft 401, and a housing 404. When the motor 402 is energized, it drives the gear transmission component 403 to rotate, thereby driving the output shaft 401 to output rotational motion. For example, the output shaft 401 may extend out of the housing 404 to drive the pump module 11. For example, the gear transmission component 403 may include the output gear 530, the double gear 540, and the clutch gear set 520 described below. The specific composition and structure of the drive module 14 of this utility model can be seen in the following figures and text description.

[0040] For example, such as Figure 3 As shown, the pump head assembly 100 is provided with a drive connection part 115, which has a hole for drive connection with the output shaft 401 of the drive module 14.

[0041] Figure 7 This is a schematic diagram of the internal structure of the drive module provided in some embodiments of the present invention. Figure 8 This is a schematic diagram of the gear assembly of the drive module provided in some embodiments of the present invention. Figure 9 The diagram shows the structure of the driving wheel and driven wheel provided in some embodiments of this utility model.

[0042] For example, such as Figure 7 and Figure 8 As shown, the drive module 14 of this utility model includes a motor 402, a worm gear 510, and a clutch gear set 520. The worm gear 510 is connected to and driven by the motor 402 to rotate. The clutch gear set 520 includes a driving gear 610 and a driven gear 620. The worm gear 510 meshes with the driving gear 610 to drive the driving gear 610 to rotate.

[0043] In this embodiment of the invention, the drive module 14 uses a worm gear 510 to engage with the clutch gear set 520 for transmission. The worm gear 510 has a self-locking characteristic, meaning it can drive the lower gear (i.e., the driving gear 610) to rotate, but the lower gear cannot drive the worm gear 510 to rotate. Therefore, this invention uses a worm gear with a self-locking function as a transmission component, which can prevent reverse rotation due to unexpected situations during operation, avoid potential safety accidents, and improve the stability and reliability of the transmission system.

[0044] In an embodiment of this utility model, the driving wheel 610 is configured to drive the driven wheel 620 to rotate in one direction, and this one direction is the first rotation direction. For example, to clearly and concisely illustrate the solution of this utility model, the first rotation direction is hereby considered as... Figures 7-8 Let's take the counterclockwise direction on the Chinese drawing as an example for explanation.

[0045] In embodiments of this invention, the unidirectional drive means that the driving wheel 610 can only drive the driven wheel 620 to rotate when it rotates relative to the driven wheel 620 in a first rotation direction (e.g., the driving wheel 610 is driven by the motor 402 and the worm gear 510 to rotate in the first rotation direction). When it rotates relative to the driven wheel 620 in a second rotation direction (the second rotation direction being the opposite of the first rotation direction), it does not drive the driven wheel 620 to rotate (this can also be referred to as slippage). For example, the second rotation direction could be... Figures 7-8 The clockwise direction on the Chinese drawing paper.

[0046] In an embodiment of this invention, the driven wheel 620 is configured to be locked by the driving wheel 610 when rotating in the second rotation direction, and to disengage from the driving wheel 610 when rotating in the first rotation direction. In this embodiment, the phrase "when the driven wheel 620 rotates in the second rotation direction" refers to the driven wheel 610 having a tendency to rotate in the second rotation direction, rather than continuous rotation with a large stroke already completed, because the driven wheel 620 would be locked in time under these circumstances.

[0047] For example, when the motor 402 is de-energized, and the user rotates the pump head assembly 100 to rotate the driven wheel 620 in the first rotation direction, the driven wheel 620 can move smoothly without being locked due to the structural cooperation between the driven wheel 620 and the driving wheel 610 (as described below). This allows the user to smoothly rotate the pump head assembly 100 and remove the pump tube 210. Thus, this embodiment of the invention allows for manual rotation of the pump head assembly 100 of the peristaltic pump 1 to replace the pump tube 210.

[0048] For example, when the driven wheel 620 is driven to rotate in the second rotation direction (e.g., due to user error or excessive hydraulic pressure at the peristaltic pump outlet causing reverse drive), the driven wheel 620 is restricted and locked by the driving wheel 610 to achieve reverse stall of the peristaltic pump. Thus, embodiments of this invention can avoid the risk of leakage due to excessive reverse hydraulic pressure.

[0049] In this embodiment of the invention, a pair of gears are set in the drive module of the peristaltic pump, and through the clutch engagement between the driving gear and the driven gear, the pump head assembly can be manually rotated to replace the pump tube, which is convenient for users to replace the pump tube in a time-saving and labor-saving manner, and at the same time, the peristaltic pump can be prevented from leaking.

[0050] In some examples, the first rotation direction is the working direction of the peristaltic pump 1. This working direction refers to the working liquid-drawing direction of the peristaltic pump 1. For example, when the motor 402 drives the worm gear 510 to rotate and the worm gear 510 drives the drive wheel 610 to rotate along the first rotation direction, the drive wheel 610 will drive the driven wheel 620 to rotate along the first rotation direction through the structural cooperation between the drive wheel 610 and the driven wheel 620, thereby driving the pump head assembly 100 to rotate, and thus squeezing the pump tube 210 to achieve the liquid-drawing function.

[0051] In some examples, the user can rotate the turntable in the pump head assembly 110 to disassemble the ball bearing assembly for squeezing the pump tube 210, and also pull the connector 220 out of the pump housing 300 to remove the pump tube assembly 200 from the cavity of the pump housing 300 to disassemble the pump tube 210. Alternatively, the user can first remove the connector 220 from the pump tube 210 and then pull the pump tube 210 from the outlet end to remove it. It should be noted that the embodiments of this utility model do not limit the specific method by which the user removes the pump tube 210. The embodiments of this utility model are applicable to all scenarios where the pump tube can be replaced by rotating the pump head assembly, which may vary depending on the actual peristaltic pump structure and operating method. These methods will not be exhaustively described here.

[0052] In some embodiments of this utility model, the user can remove and install the pump tube 210 along the same direction (i.e., the working liquid pumping direction of the peristaltic pump 1, the direction from the inlet to the outlet, and the pump body module 11 is marked with inlet and outlet arrows A1), which makes it convenient for the user to replace the pump tube 210.

[0053] For example, such as Figures 7-9 As shown, the driving gear 610 has a first shaft hole O1, and the driven gear 620 has a second shaft hole O2. The first shaft hole O1 and the second shaft hole O2 are coaxially arranged so that the driving gear 610 and the driven gear 620 are installed coaxially. In this way, the two gears of the clutch gear set in the embodiment of this utility model can be arranged on the same shaft by coaxial arrangement, which helps to reduce the space occupied, and has high transmission efficiency and high transmission accuracy, and is convenient to assemble.

[0054] For example, such as Figure 7 and Figure 8 As shown, the drive module 14 also includes an output gear 530. The output gear 530 is drive-connected to the driven wheel 620 (for example, the output gear 530 can be drive-connected to the driven wheel 620 via another intermediate gear, as described below). An output shaft 401 is provided on the output gear 530, and the output shaft 401 is drive-connected to the pump head assembly 100 of the peristaltic pump 1.

[0055] For example, such as Figure 7 As shown, the drive module 14 also includes a double gear 540. The double gear 540 includes a first sub-gear 541 and a second sub-gear 542 fixedly connected to the first sub-gear 541. The output gear 530 and the driven gear 620 are connected by the double gear 540 for transmission.

[0056] In some examples, the drive wheel 610 can be made of plastic, which is flexible.

[0057] For example, such as Figures 7-9As shown, the driving gear 610 includes a driving gear body 611 and a pawl 612. The pawl 612 is disposed on the annular wall 601 of the driving gear body 611 and extends inward. The extending direction of the pawl 612 is offset relative to the radial line of the driving gear body 611. The driven gear 620 is provided with a stop groove 621 that cooperates with the pawl 612. For example, the cooperation between the pawl 612 and the stop groove 621 can be referred to... Figure 8 As shown at point Q1 in the diagram.

[0058] The embodiments of this utility model provide reliable mechanical locking by setting a pawl and a stop groove on the gear set in the drive module of the peristaltic pump, which is low in cost and simple in structure.

[0059] For example, the pawl 612 and the drive gear body 611 may be integrally formed.

[0060] For example, such as Figure 7 As shown, the first sub-gear 541 of the double gear 540 meshes with the output gear 530, and the second sub-gear 542 of the double gear 540 meshes with the driven gear 620.

[0061] For example, such as Figure 9 As shown, the driven wheel 620 includes a driven gear meshing portion 622 and a driven column 623 fixedly connected to the driven gear meshing portion 622. The driven gear meshing portion 622 meshes with the second sub-gear 542 of the double gear 540. The driven column 623 has a groove wall 6231 that protrudes outward relative to the side surface 6232 of the driven column 623. The groove wall 6231 and the side surface 6232 of the driven column 623 form a stop groove 621.

[0062] For example, the groove wall 6231 may be integrally formed on the driven wheel 620.

[0063] For example, in Figure 9 In the example, the groove wall 6231 may extend in a direction offset from the radial line of the side surface 6232 of the driven column 623. This design of the stop groove, when engaged with the pawl, results in a more effective and reliable locking contact.

[0064] In some examples, the number of stop grooves 621 is N, and the N stop grooves 621 are evenly spaced in the circumferential direction of the driven gear 620, where N is an integer greater than 1. The number of pawls 612 is N, and the N pawls 612 are evenly spaced in the circumferential direction of the driving gear body 611.

[0065] For example, the driven wheel 620 has three stop grooves 621, and the driving wheel 610 has three pawls 612. In this way, the three evenly arranged locking structures not only have symmetrical force distribution and good locking effect, but also have low assembly cost, achieving a better balance in terms of quantity, performance and cost.

[0066] In some examples, when the drive wheel 610 is driven by the motor 402 to rotate counterclockwise, the end of the pawl 612 enters along the groove opening of the driven wheel 620's stop groove 621 towards the bottom of the groove and abuts against the bottom of the groove, thereby driving the driven wheel 620 to rotate counterclockwise as well. This direction corresponds exactly to the working pumping direction of the peristaltic pump 1. At this time, if the motor 402 is de-energized and the user rotates the pump head assembly 100, the driven wheel 620 rotates counterclockwise via the output shaft 401, output gear 530, and double gear 540. As the driven wheel 620 rotates counterclockwise, the stop groove 621 disengages from the pawl 612 in a direction away from the pawl 612. When the back of the stop groove 621 abuts against the next pawl 612, since its back has no groove opening and is aligned with the direction of the pawl 612, it will compress the pawl 612, deform it, and gradually slide it away from the pawl 612. This allows the user to rotate the pump head assembly to remove the pump tube.

[0067] In some examples, when the hydraulic pressure at the outlet of the peristaltic pump 1 is too high, it may reverse the drive of the pump head assembly 100 (i.e., drive the pump head assembly 100 clockwise) and cause the driven wheel 620 to have a clockwise rotation tendency. At this time, the bottom of the stop groove 621 abuts against the end of the pawl, thereby locking it. This achieves reverse stalling of the peristaltic pump, preventing high pressure from flowing through the pump pipe and causing leakage.

[0068] Therefore, in this invention, the pump head assembly can be manually rotated in the working direction to replace the pump tube, and the pump head assembly can also have a self-locking function for the transmission components in the non-working direction to prevent leakage.

[0069] It should be noted that since the peristaltic pump 1 in the embodiment of this utility model includes the drive module 14 mentioned above, the technical effects of the peristaltic pump 1 in this utility model can be referred to the description of the drive module 14 mentioned above. For the sake of clarity and conciseness, it will not be repeated here.

[0070] It should be noted that the accompanying drawings of the embodiments of this utility model only relate to the structures involved in the embodiments of this utility model; other structures can be referred to with ordinary design. It should be understood that the above description is intended to illustrate and not limit. For example, the above embodiments (and / or aspects thereof) can be used in combination with each other. Furthermore, many modifications can be made to adapt specific situations or materials to the teachings of this utility model without departing from its scope. The functions or performance of the various elements or modules described herein are for illustrative purposes only and are by no means limiting, but merely exemplary embodiments. Many other embodiments and modifications within the spirit and scope of the claims will be apparent to those skilled in the art after reading the above description. Therefore, the scope of this utility model should be determined by reference to the appended claims and the full scope of their equivalents.

Claims

1. A drive module (14) for a peristaltic pump (1), characterized in that, include: Motor (402); The worm gear (510) is connected to and driven to rotate by the motor (402); A clutch gear set (520) includes a driving gear (610) and a driven gear (620), wherein the worm (510) meshes with the driving gear (610) to drive the driving gear (610) to rotate, the driving gear (610) is configured to drive the driven gear (620) to rotate in one direction, the one direction being a first rotation direction; the driven gear (620) is configured to be locked by the driving gear (610) when rotating in a second rotation direction, and to disengage from the locking of the driving gear (610) when rotating in the first rotation direction, wherein the second rotation direction is the opposite direction of the first rotation direction.

2. The driving module (14) as described in claim 1, characterized in that, The driving wheel (610) is provided with a first shaft hole (O1), and the driven wheel (620) is provided with a second shaft hole (O2). The first shaft hole (O1) and the second shaft hole (O2) are coaxially arranged so that the driving wheel (610) and the driven wheel (620) are coaxially mounted.

3. The driving module (14) as described in claim 1, characterized in that, The first rotation direction is the working direction of the peristaltic pump (1).

4. The driving module (14) as described in claim 1, characterized in that, It also includes an output gear (530), wherein, The output gear (530) is connected to the driven gear (620) in a transmission connection; An output shaft (401) is provided on the output gear (530), and the output shaft (401) is driven to the pump head assembly (100) of the peristaltic pump (1).

5. The driving module (14) as described in claim 4, characterized in that, The drive wheel (610) includes a drive gear body (611) and a pawl (612). The pawl (612) is disposed on the annular wall (601) of the drive gear body (611) and extends inward. The extension direction of the pawl (612) is offset relative to the radial line of the drive gear body (611). The driven wheel (620) is provided with a stop groove (621) that cooperates with the pawl (612).

6. The driving module (14) as described in claim 5, characterized in that, It also includes a double gear (540), in which, The double gear (540) includes a first sub-gear (541) and a second sub-gear (542) fixedly connected to the first sub-gear (541). The first sub-gear (541) meshes with the output gear (530), and the second sub-gear (542) meshes with the driven gear (620).

7. The driving module (14) as described in claim 6, characterized in that, The driven wheel (620) includes a driven gear meshing part (622) and a driven column (623) fixedly connected to the driven gear meshing part (622). The driven gear meshing part (622) meshes with the second sub-gear (542). The driven column (623) has a groove wall (6231) that protrudes outward relative to the side surface (6232) of the driven column (623). The groove wall (6231) and the side surface (6232) of the driven column (623) form the stop groove (621).

8. The driving module (14) as described in claim 5, characterized in that, The number of stop grooves (621) is N, and the N stop grooves (621) are evenly spaced in the circumferential direction of the driven wheel (620), where N is an integer greater than 1; The number of pawls (612) is N, and the N pawls (612) are evenly spaced in the circumferential direction of the drive gear body (611).

9. A peristaltic pump (1), characterized in that, include: The pump body module (11) and the drive module (14) as described in any one of claims 1-8, wherein the pump body module (11) is connected to the drive module (14), and the pump body module (11) includes a pump housing (300), a pump cover (400), a pump pipe assembly (200), and a pump head assembly (100). The pump housing (300) and the pump cover (400) cooperate to accommodate the pump head assembly (100) and the pump tube assembly (200), the pump head assembly (100) being configured to be driven by the drive module (14) to rotate to compress the pump tube assembly (200).

10. The peristaltic pump (1) as claimed in claim 9, characterized in that, The pump head assembly (100) is provided with a drive connection part (115), which has a hole for drive connection with the output shaft (401) of the drive module (14).

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