peristaltic pump

Abstract

This application relates to a peristaltic pump. The pump backplate has mounting holes, including a main body hole and a locking hole, and also includes a stop. The pump body module has a through hole with a limiting part within it. The connecting assembly includes a rotating shaft and an elastic element. One end of the rotating shaft extends out of the through hole and has a locking part protruding from its circumference. The rotating shaft is fitted into the main body hole, and the locking part is fitted into the locking hole. The rotating shaft has a locking part located on the side of the limiting part away from the pump backplate, which restricts the locking part from moving towards the pump backplate. The elastic element is located within the through hole and sleeved on the rotating shaft. One end of the elastic element acts on the rotating shaft, and the other end acts on the pump body module. The elastic element drives the rotating shaft to rotate so that the locking part aligns with the locking hole, allowing the rotating shaft to extend into the mounting hole. Rotating the rotating shaft drives the locking part to the stop and locks the pump backplate and pump body module together. Compared to connecting the pump backplate and pump body module with bolts, this application allows for easier and faster installation and disassembly.

Description

Technical Field

[0001] This application relates to the field of pumps, and in particular to a peristaltic pump. Background Technology

[0002] A peristaltic pump consists of a pump backplate and a pump body module. The pump body module and the pump backplate are detachably connected, commonly by bolts. However, the disassembly and assembly process requires repeated tightening of the bolts, making the disassembly and assembly of the pump backplate and pump body module complex and slow.

[0003] The information disclosed in the background section is only for enhancing the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] Based on this, a peristaltic pump is provided. This application connects the pump body module to the pump back plate through a connecting component. Compared with the traditional bolt connection, this application improves the convenience of disassembly and assembly.

[0005] Therefore, this application provides a peristaltic pump, including:

[0006] The pump back plate is provided with mounting holes, which include interconnected main body holes and locking holes;

[0007] The pump body module is provided with a through hole, and a limiting part is provided in the through hole;

[0008] The connecting assembly includes a rotating shaft and an elastic element. The rotating shaft is located in the through hole, with one end extending out of the through hole and a locking part protruding from its periphery. The rotating shaft is adapted to a main body hole, and the locking part is adapted to a locking hole. A locking part is provided on the periphery of the middle portion of the rotating shaft. The locking part is located on the side of the limiting part opposite to the pump back plate, and the limiting part is used to restrict the movement of the locking part toward the pump back plate. The elastic element is located in the through hole and sleeved on the rotating shaft. One end of the elastic element acts on the rotating shaft, and the other end acts on the pump body module.

[0009] In the first state, the elastic element is used to drive the rotating shaft to rotate so that the locking part is aligned with the locking hole, so that the rotating shaft can extend into the mounting hole;

[0010] In the second state, rotating the shaft drives the locking part to be positioned at the stop part and locks the pump back plate to the pump body module.

[0011] In one embodiment, the elastic element is a torsion spring, one arm of the elastic element is connected to the rotating shaft, and the other arm of the elastic element abuts against a protrusion in the through hole.

[0012] In one embodiment, the elastic element includes a compression spring and a rotating part connected to each other. The compression spring abuts against a protrusion in the through hole. The rotating part is located at one end of the compression spring facing the engaging part. Either the rotating part or the engaging part is provided with a helical protrusion, and the other is provided with a helical groove. When the rotating part engages or disengages from the engaging part, it drives the rotating shaft to rotate.

[0013] In one embodiment, the locking part is cylindrical.

[0014] In one embodiment, the locking parts are provided in a plurality of locations and are arranged at intervals along the circumference of the pivot axis, and the locking holes are provided in a plurality of locations and are arranged at intervals along the circumference of the main body hole.

[0015] In one embodiment, the stop portion is in the shape of a spiral fan.

[0016] In one embodiment, at least one rotating plane is provided on the periphery of the end of the rotating shaft opposite to the locking part.

[0017] In one embodiment, a bayonet is provided at the end of the rotating shaft opposite to the locking part, and the bayonet is elongated.

[0018] In one embodiment, multiple connection components are provided, and the multiple connection components are arranged at intervals.

[0019] In one embodiment, the pump module includes an upper seat assembly, a pump body, and a lower seat assembly connected in sequence, wherein part of the connecting assembly connects the upper seat assembly to the pump back plate, and part of the connecting assembly connects the lower seat assembly to the pump back plate.

[0020] The peristaltic pump provided according to the embodiments of this application includes a pump back plate, a pump body module, and a connecting assembly. The pump back plate is provided with a mounting hole, which includes a main body hole and a locking hole that are interconnected. A stop portion is provided in the peripheral recess of the locking hole. The pump body module is provided with a through hole, in which a limiting portion is provided. The connecting assembly includes a rotating shaft and an elastic element. The rotating shaft is located in the through hole, and one end of the rotating shaft extends out of the through hole and has a locking portion protruding from its peripheral side. The rotating shaft is adapted to the main body hole, and the locking portion is adapted to the locking hole. A locking part is provided on the central periphery, located on the side of the limiting part opposite to the pump back plate. The limiting part is used to restrict the movement of the locking part toward the pump back plate. An elastic element is located in the through hole and sleeved on the rotating shaft. One end of the elastic element acts on the rotating shaft and the other end acts on the pump body module. In the first state, the elastic element is used to drive the rotating shaft to rotate so that the locking part is aligned with the locking hole, so that the rotating shaft can extend into the mounting hole. In the second state, rotating the rotating shaft drives the locking part to be located at the stop part and locks the pump back plate and the pump body module. This application connects the pump back plate and the pump body module through a connecting assembly. Compared with connecting the pump back plate and the pump body module with bolts, this application is easier and faster to install and disassemble, improving the convenience of installation and disassembly for operators. Attached Figure Description

[0021] Figure 1 This image shows a front view of a peristaltic pump provided in an embodiment of this application;

[0022] Figure 2 A partial cross-sectional view of a second peristaltic pump provided in an embodiment of this application is shown;

[0023] Figure 3 This image shows a left view of a peristaltic pump provided in an embodiment of this application;

[0024] Figure 4 An exploded view of the first peristaltic pump provided in an embodiment of this application is shown;

[0025] Figure 5 Show Figure 4 Enlarged schematic diagram of part A;

[0026] Figure 6 An exploded view of the second type of peristaltic pump provided in an embodiment of this application is shown;

[0027] Figure 7 This diagram illustrates the structure of the shaft and elastic element of the second type of peristaltic pump provided in this application embodiment.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Pump back plate; 11. Mounting hole; 111. Main body hole; 112. Locking hole; 113. Stop part; 2. Pump body module; 21. Through hole; 211. Restricting part; 22. Upper seat assembly; 23. Pump body; 24. Lower seat assembly; 3. Connecting assembly; 31. Rotating shaft; 311. Locking part; 312. Engaging part; 313. Tightening plane; 314. Bayonet; 32. Elastic element; 321. Compression spring; 322. Rotating part. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0031] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0032] The structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0033] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] The peristaltic pump includes a pump back plate 1 and a pump body module 2. The pump body module 2 and the pump back plate 1 are detachably connected, and the common connection method is bolt connection. However, during the disassembly and assembly process, the bolts need to be tightened repeatedly, which makes the disassembly and assembly of the pump back plate 1 and the pump body module 2 relatively complicated and slow.

[0035] To solve the above problems, refer to Figures 1-3 , Figure 1 This image shows a front view of a peristaltic pump provided in an embodiment of this application. Figure 2 A partial cross-sectional view of the second peristaltic pump provided in this application embodiment is shown. Figure 3 The image shows a left view of a peristaltic pump provided in an embodiment of this application.

[0036] This application includes a peristaltic pump, comprising a pump back plate 1, a pump body module 2, and a connecting assembly 3. The pump back plate 1 is provided with a mounting hole 11, which includes a main body hole 111 and a locking hole 112 that are interconnected. The pump body module 2 is provided with a through hole 21, in which a limiting part 211 is provided. The connecting assembly 3 includes a rotating shaft 31 and an elastic element 32. The rotating shaft 31 is located in the through hole 21, and one end of the rotating shaft 31 extends out of the through hole 21 and has a peripheral protrusion. The locking part 311 is adapted to the main body hole 111 and the locking part 311 is adapted to the locking hole 112. A locking part 312 is provided on the middle periphery of the rotating shaft 31. The locking part 312 is located on the side of the limiting part 211 away from the pump back plate 1. The limiting part 211 is used to limit the movement of the locking part 312 toward the pump back plate 1. The elastic member 32 is located in the through hole 21 and sleeved on the rotating shaft 31. One end of the elastic member 32 acts on the rotating shaft 31 and the other end acts on the pump body module 2.

[0037] In the first state, the elastic element 32 is used to drive the rotating shaft 31 to rotate so that the locking part 311 is aligned with the locking hole 112, so that the rotating shaft 31 can extend into the mounting hole 11;

[0038] In the second state, rotating the shaft 31 drives the locking part 311 to be located at the stop part 113 and locks the pump back plate 1 and the pump body module 2.

[0039] It should be understood that the peristaltic pump includes a pump back plate 1, which has a mounting hole 11. The mounting hole 11 includes a main body hole 111 and a locking hole 112. The main body hole 111 is circular, and the locking hole 112 communicates with the main body hole 111 and is elongated. A stop 113 is located on the side of the locking hole 112. When the locking part 311 extends out of the mounting hole 11, rotating the shaft 31 causes the locking part 311 to slide to the stop 113, thereby connecting the locking part 311 to the pump back plate 1. Furthermore, the middle of the stop 113 is recessed, and the height of the side facing the locking hole 112 is greater than that of the middle, thereby reducing the occurrence of the locking part 311 disengaging from the stop 113 and improving the stability of the installation.

[0040] The pump body module 2 is provided with a through hole 21, which extends along the length of the pump body module 2. A limiting part 211 is provided inside the through hole 21. The limiting part 211 may be stepped or formed by a portion protruding from the inner wall of the through hole 21. This application does not impose any restrictions.

[0041] The connecting component 3 includes a rotating shaft 31, which is cylindrical and located in a through hole 21. The rotating shaft 31 can rotate in the through hole 21. A locking part 312 is provided on the circumference of the middle part of the rotating shaft 31. The locking part 312 is located on the side of the limiting part 211 away from the pump back plate 1. The limiting part 211 is used to limit the movement of the locking part 312 toward the pump back plate 1, so as to prevent the rotating shaft 31 from disengaging from the pump body module 2.

[0042] One end of the rotating shaft 31 extends out of the through hole 21, and a locking part 311 protrudes from the periphery of the end of the rotating shaft 31 extending out of the through hole 21. The locking part 311 is made of the same material as the rotating shaft 31 and is integrally formed. The rotating shaft 31 is adapted to the main body hole 111 of the mounting hole 11, and the locking part 311 is adapted to the locking hole 112 of the mounting hole 11. The rotating shaft 31 can extend into the pump back plate 1 through the main body hole 111, and the locking part 311 can extend into the pump back plate 1 through the locking hole 112. Then, rotating the rotating shaft 31 causes the locking part 311 to be misaligned with the locking hole 112, thereby connecting the pump back plate 1 to the pump body module 2.

[0043] Furthermore, the connecting assembly 3 also includes an elastic element 32, which is located within the through hole 21 and sleeved on the rotating shaft 31. One end of the elastic element 32 acts on the rotating shaft 31, and the other end acts on the pump body module 2. The elastic element 32 can deform along the circumference of the rotating shaft 31, allowing it to drive the rotating shaft 31 to rotate so that the locking part 311 aligns with the locking hole 112, ensuring that the rotating shaft 31 can smoothly extend into the mounting hole 11. The elastic element 32 can also deform along the axial direction of the rotating shaft 31 to tighten the rotating shaft 31, making the connection between the pump back plate 1 and the pump body module 2 more secure.

[0044] During installation, the elastic element 32 drives the rotating shaft 31 to rotate so that the locking part 311 aligns with the locking hole 112 and the rotating shaft 31 aligns with the main body hole 111. The elastic element 32 is in the return state. Then, the rotating shaft 31 is inserted into the mounting hole 11. The limiting part 211 prevents the rotating shaft 31 from extending too far into the mounting hole 11. Rotating the rotating shaft 31 compresses the elastic element 32, causing the locking part 311 to misalign with the locking hole 112. The locking part 311 slides to the stop part 113, thereby connecting the pump back plate 1 and the pump body module 2. During disassembly, axial pressure is applied to the rotating shaft 31, causing the rotating shaft 31 to disengage from the stop part 113. The elastic element 32 is in the return state, aligning the rotating shaft 31 with the main body hole 111 and the locking part 311 with the locking hole 112. The rotating shaft 31 is then pulled out of the mounting hole 11, thus completing the disassembly.

[0045] This application connects the pump back plate 1 and the pump body module 2 through the connecting component 3. Compared with connecting the pump back plate 1 and the pump body module 2 with bolts, this application is easier and faster to install and disassemble, improving the convenience of installation and disassembly for the operator.

[0046] Reference Figure 4 , Figure 4 An exploded view of the first peristaltic pump provided in this application embodiment is shown. In some optional embodiments, the elastic element 32 is a torsion spring. One arm of the elastic element 32 is connected to the rotating shaft 31, and the other arm of the elastic element 32 abuts against the protrusion in the through hole 21. The elastic element 32 is sleeved on the rotating shaft 31, and one arm acts on the rotating shaft 31, which can act on the engaging part 312 at the rotating shaft 31. The other arm acts on the protrusion in the through hole 21, that is, the elastic element 32 can drive the rotating shaft 31 to rotate. During installation, the torsion spring is in the return state, so that the rotating shaft 31 is aligned with the main body hole 111, and the locking part 311 is aligned with the locking hole 112. After the rotating shaft 31 extends into the mounting hole 11, rotating the rotating shaft 31 compresses the torsion spring, causing the locking part 311 to be misaligned with the locking hole 112, and the locking part 311 is located at the stop part 113. During disassembly, axial pressure is applied to the rotating shaft 31, causing the rotating shaft 31 to disengage from the stop part 113. The torsion spring returns to its original position, aligning the rotating shaft 31 with the main body hole 111 and the locking part 311 with the locking hole 112, making it easier to pull the rotating shaft 31 out of the mounting hole 11.

[0047] Reference Figure 2 , Figure 6 and Figure 7 , Figure 6 An exploded view of the second peristaltic pump provided in an embodiment of this application is shown. Figure 7 This diagram illustrates the structure of the shaft and elastic element of the second type of peristaltic pump provided in this application. In some optional embodiments, the elastic element 32 includes a compression spring 321 and a rotating part 322 connected to each other. The compression spring 321 abuts against a protrusion in the through hole 21. The rotating part 322 is located at the end of the compression spring 321 facing the engaging part 312. Either the rotating part 322 or the engaging part 312 is provided with a helical protrusion, and the other is provided with a helical groove. When the rotating part 322 engages or disengages from the engaging part 312, it drives the shaft 31 to rotate. The elastic element 32 is located on the side of the engaging part 312 away from the pump back plate 1. The elastic element 32 includes a compression spring 321 and a rotating part 322. The compression spring 321 is connected to the rotating part 322. The connection method can be welding, bonding, etc., which is not limited in this application. The end of the compression spring 321 away from the rotating part 322 abuts against a protrusion in the through hole 21, and the rotating part 322 faces the engaging part 312.

[0048] One of the rotating part 322 and the engaging part 312 is provided with a helical protrusion, and the other is provided with a helical groove. When the rotating part 322 engages or disengages from the engaging part 312, the rotating shaft 31 rotates, and at the same time, the compression spring 321 deforms, or the rotating shaft 31 moves axially. During installation, the compression spring 321 is in the return state, and the rotating part 322 engages with the engaging part 312, so that the rotating shaft 31 is aligned with the main body hole 111 and the locking part 311 is aligned with the locking hole 112, so that the rotating shaft 31 can extend into the mounting hole 11. Then, the rotating shaft 31 is rotated, the locking part 311 and the locking hole 112 are misaligned, the locking part 311 is located in the stop part 113, the compression spring 321 is in a compressed state, and the rotating part 322 and the engaging part 312 are separated. During disassembly, axial pressure is applied to the rotating shaft 31, causing the rotating shaft 31 to disengage from the stop part 113. The compression spring 321 returns to its original position, and the rotating part 322 engages with the engaging part 312, so that the rotating shaft 31 is aligned with the main body hole 111 and the locking part 311 is aligned with the locking hole 112, making it easy to pull the rotating shaft 31 out of the mounting hole 11.

[0049] In some alternative embodiments, the locking part 311 is cylindrical. That is, the periphery of the locking part 311 contacts the pump back plate 1 in line contact, so that the locking part 311 can rotate relative to the pump back plate 1, improving the ease of operation.

[0050] In some optional embodiments, multiple locking parts 311 are provided and arranged at intervals along the circumference of the rotating shaft 31, and multiple locking holes 112 are provided and arranged at intervals along the circumference of the main body hole 111. The provision of multiple locking parts 311 and multiple locking holes 112 can improve the stability of the connection between the rotating shaft 31 and the pump back plate 1.

[0051] Reference Figure 3 In some alternative embodiments, the stop portion 113 is in the shape of a spiral fan to allow the locking portion 311 to rotate within the stop portion 113.

[0052] Reference Figure 5 In some optional embodiments, at least one rotating surface 313 is provided on the circumferential side of the end of the rotating shaft 31 opposite to the locking part 311. The rotating surface 313 extends along the length direction of the rotating shaft 31, and the provision of the rotating surface 313 facilitates the attachment of other tools to the rotating shaft 31 for rotation. Furthermore, multiple rotating surfaces 313 are provided and arranged circumferentially along the rotating shaft 31.

[0053] In some optional embodiments, a bayonet 314 is provided at the end of the rotating shaft 31 opposite to the locking part 311. The bayonet 314 is elongated. The bayonet 314 is provided on the end face of the rotating shaft 31 to facilitate engagement with other tools, further improving the convenience and stability of rotating the rotating shaft 31.

[0054] Reference Figures 1-7In some optional embodiments, multiple connecting components 3 are provided, and the multiple connecting components 3 are arranged at intervals. The arrangement of multiple connecting components 3 can improve the stability of the connection between the pump back plate 1 and the pump body module 2.

[0055] Reference Figure 1 In some optional embodiments, the pump module 2 includes an upper seat assembly 22, a pump body 23, and a lower seat assembly 24 connected in sequence. Partial connecting components 3 connect the upper seat assembly 22 to the pump back plate 1, and partial connecting components 3 connect the lower seat assembly 24 to the pump back plate 1. The upper seat assembly 22 is located above and connected to the pump body 23, and the lower seat assembly 24 is located below and connected to the pump body 23. In one example, four sets of connecting components 3 are provided: two sets are located on the upper seat assembly 22 and are used to connect to the pump back plate 1, and two sets are located on the lower seat assembly 24 and are connected to the pump back plate 1, thereby connecting the pump module 2 to the pump back plate 1.

[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A peristaltic pump, characterized in that, include: The pump back plate (1) is provided with a mounting hole (11), the mounting hole (11) includes a main body hole (111) and a locking hole (112) that are interconnected, and a stop part (113) is provided in the peripheral recess of the locking hole (112); The pump body module (2) is provided with a through hole (21), and a limiting part (211) is provided in the through hole (21); The connecting component (3) includes a rotating shaft (31) and an elastic element (32). The rotating shaft (31) is located in the through hole (21). One end of the rotating shaft (31) extends out of the through hole (21) and a locking part (311) is provided on its circumferential side. The rotating shaft (31) is adapted to the main body hole (111), and the locking part (311) is adapted to the locking hole (112). A locking part (32) is provided on the circumferential side of the middle part of the rotating shaft (31). 12) The engaging part (312) is located on the side of the limiting part (211) away from the pump back plate (1). The limiting part (211) is used to restrict the engaging part (312) from moving toward the pump back plate (1). The elastic member (32) is located in the through hole (21) and sleeved on the rotating shaft (31). One end of the elastic member (32) acts on the rotating shaft (31) and the other end acts on the pump body module (2). In the first state, the elastic element (32) is used to drive the rotating shaft (31) to rotate so that the locking part (311) is aligned with the locking hole (112) so that the rotating shaft (31) can extend into the mounting hole (11); In the second state, the rotating shaft (31) is rotated to drive the locking part (311) to be located on the stop part (113) and lock the pump back plate (1) to the pump body module (2).

2. The peristaltic pump according to claim 1, characterized in that, The elastic element (32) is a torsion spring. One arm of the elastic element (32) is connected to the rotating shaft (31), and the other arm of the elastic element (32) abuts against the protrusion in the through hole (21).

3. The peristaltic pump according to claim 1, characterized in that, The elastic element (32) includes a compression spring (321) and a rotating part (322) connected to each other. The compression spring (321) abuts against the protrusion in the through hole (21). The rotating part (322) is located at one end of the compression spring (321) facing the engaging part (312). Either the rotating part (322) or the engaging part (312) is provided with a helical protrusion, and the other is provided with a helical groove. When the rotating part (322) engages or disengages from the engaging part (312), it drives the rotating shaft (31) to rotate.

4. The peristaltic pump according to claim 1, characterized in that, The locking part (311) is cylindrical.

5. The peristaltic pump according to claim 1, characterized in that, The locking part (311) is provided in a plurality of locations and is arranged at intervals along the circumference of the rotating shaft (31), and the locking hole (112) is provided in a plurality of locations and is arranged at intervals along the circumference of the main body hole (111).

6. The peristaltic pump according to claim 1, characterized in that, The stop part (113) is in the shape of a spiral fan.

7. The peristaltic pump according to claim 1, characterized in that, At least one rotating surface (313) is provided on the periphery of the end of the rotating shaft (31) opposite to the locking part (311).

8. The peristaltic pump according to claim 1, characterized in that, The rotating shaft (31) is provided with a bayonet (314) at one end away from the locking part (311), and the bayonet (314) is elongated.

9. The peristaltic pump according to claim 1, characterized in that, Multiple connecting components (3) are provided, and the multiple connecting components (3) are arranged at intervals.

10. The peristaltic pump according to claim 9, characterized in that, The pump module (2) includes an upper seat assembly (22), a pump body (23), and a lower seat assembly (24) connected in sequence. Part of the connecting assembly (3) connects the upper seat assembly (22) to the pump back plate (1), and part of the connecting assembly (3) connects the lower seat assembly (24) to the pump back plate (1).

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