Peristaltic pump

Abstract

The utility model provides a peristaltic pump which comprises a peristaltic pump body and a hose, the peristaltic pump body is provided with a containing cavity, an inlet and an outlet, the inlet and the outlet are communicated with the containing cavity, a rotary extrusion set of the peristaltic pump body is located in the containing cavity, and the hose comprises an acting section and installation sections located at the two ends of the acting section. The action section of the hose is arranged in the containing cavity so as to be matched with extrusion of the rotary extrusion set, blocking beads are assembled in the two installation sections of the hose, the pipe walls of the installation sections are expanded outwards through the blocking beads, the blocking beads are provided with through holes, and the two installation sections of the hose are limited in the inlet and the outlet through the blocking beads. The hose can be firmly limited in the inlet and the outlet, the hose is not prone to falling off from the connector in the using process, and the product structure stability is good.

Description

Technical Field

[0001] The utility model relates to a peristaltic pump. Background Art

[0002] A peristaltic pump is like squeezing a fluid-filled hose with your fingers. As your fingers slide forward, negative pressure is formed in the tube, and the fluid in the tube moves forward. In existing peristaltic pumps, the rollers continuously squeeze the hose in one direction, which can easily cause the hose to move and fall off the interface. Utility Model Content

[0003] Therefore, the utility model provides a peristaltic pump to solve the above problems.

[0004] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0005] A peristaltic pump comprises a peristaltic pump body and a hose, wherein the peristaltic pump body has a accommodating chamber and an inlet and an outlet connected to the accommodating chamber, and the rotary extrusion group of the peristaltic pump body is located in the accommodating chamber, wherein the hose comprises an action section and mounting sections located at both ends of the action section, the action section of the hose is arranged in the accommodating chamber to cooperate with the extrusion of the rotary extrusion group, and the two mounting sections of the hose are both equipped with retaining beads, and the retaining beads push the tube wall of the mounting section outward, and the retaining beads have through holes, and the two mounting sections of the hose are respectively restricted in the inlet and the outlet by the retaining beads.

[0006] Furthermore, the inlet and the outlet have arc segments arranged opposite to each other, and the arc segments arranged opposite to each other constitute a limiting cavity, and the installation section stretched outward by the retaining beads is restricted in the limiting cavity.

[0007] Further, the installation section restricted at the inlet is defined as a first installation section, and the hose further comprises a first connecting section, which is located outside the peristaltic pump body and connected to the first installation section.

[0008] Furthermore, a support spring is installed in the first connecting section of the hose, and the support spring is against a stop bead in the first mounting section.

[0009] Further, the installation section restricted at the outlet is defined as a second installation section, and the hose further includes a second connecting section, which is located outside the peristaltic pump body and connected to the second installation section.

[0010] Furthermore, a support spring is installed in the second connecting section of the hose, and the support spring is against a stop bead in the second mounting section.

[0011] Furthermore, the retaining bead has an abutment portion arranged in the through hole, and the support spring passes through the through hole of the retaining bead and abuts against the abutment portion.

[0012] Furthermore, the peristaltic pump body includes a driving motor, a mounting shell and the rotating extrusion group, the accommodating chamber, the inlet and the outlet are all formed on the mounting shell, and the driving motor is fixedly assembled on the mounting shell and drivenly connected to the rotating extrusion group.

[0013] Furthermore, the peristaltic pump body has a bottom opening connected to the accommodating cavity, and also includes a bottom cover, and the bottom cover is covered on the peristaltic pump body to cover the bottom opening.

[0014] Furthermore, the rotary extrusion group includes a rotary bracket and multiple rollers, the rotary bracket has a central axis hole and multiple mounting shafts located outside the central axis hole, each mounting shaft is equipped with a roller; the rotation of the rotary extrusion group squeezes the active section of the hose in sequence through the multiple rollers.

[0015] The technical solution provided by the utility model has the following beneficial effects:

[0016] The installation section of the hose is equipped with stop beads, which push the tube wall of the installation section outward, causing the tube wall of the installation section to expand and deform outward, and then be restricted within the inlet and outlet. In this way, the hose can be firmly restricted within the inlet and outlet, and the hose is not easy to fall off from the interface during use, and the product structure has good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of the appearance of a peristaltic pump in an embodiment;

[0018] Figure 2 The figure shows a schematic diagram of the structural decomposition of the peristaltic pump in the embodiment;

[0019] Figure 3 Shown is a cross-sectional view of a peristaltic pump in an embodiment;

[0020] Figure 4 Shown is a bottom view of the mounting housing of the peristaltic pump in the embodiment;

[0021] Figure 5 Shown is a schematic diagram of the structure of the retaining bead in the embodiment.

[0022] Reference numerals:

[0023] 11. Driving motor; 12. Mounting shell; 121. Inlet; 122. Outlet; 123. Accommodating chamber; 124. Arc segment; 125. Limiting chamber; 126. Opening; 127. Mounting port; 13. Rotating extrusion group; 131. Rotating bracket; 132. Mounting shaft; 133. Center axis hole; 134 Roller; 14. Bottom cover; 20. Hose; 21. Action section; 22. Mounting section; 221. First mounting section; 222. Second mounting section; 231. First connecting section; 232. Second connecting section; 30. Stop bead; 31. Through hole; 32. Abutment portion; 40. Support spring; 41. First support spring; 42. Second support spring. DETAILED DESCRIPTION

[0024] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] In the description of the present invention, terms such as "up", "down", "left", "right", "front", "back", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0026] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0027] Reference Figures 1 to 5 As shown, a peristaltic pump provided in this embodiment includes a peristaltic pump body and a hose 20, wherein the peristaltic pump body has a accommodating chamber 123 and an inlet 121 and an outlet 122 connected to the accommodating chamber 123. Specifically, the peristaltic pump body includes a driving motor 11, a mounting shell 12 and the rotating extrusion group 13, wherein the accommodating chamber 123, the inlet 121 and the outlet 122 are all formed on the mounting shell 12, and the rotating extrusion group 13 of the peristaltic pump body is located in the accommodating chamber 123, and the driving motor 11 is fixedly assembled on the mounting shell 12 and drives the rotating extrusion group 13.

[0028] The hose 20 is made of a soft material such as a silicone tube. The hose 20 includes an action section 21 and mounting sections 22 located at both ends of the action section 21. The action section 21 of the hose 20 is arranged in the accommodating cavity 123 to cooperate with the extrusion of the rotary extrusion group 13. The two mounting sections 22 of the hose 20 are both equipped with retaining beads 30. The retaining beads 30 push the tube wall of the mounting section 22 outward, that is, the diameter of the retaining beads 30 is larger than the inner diameter of the hose 20. After the retaining beads 30 are installed, the tube wall of the mounting section 22 is pushed outward to produce deformation. In this way, the retaining beads 30 and the mounting section 22 can form a firm combination; the retaining beads 30 have a through hole 31 for the circulation of fluid. The two installation sections 22 of the hose 20 are respectively restricted in the inlet 121 and the outlet 122 by the retaining beads 30; the installation section 22 restricted in the inlet 121 is defined as the first installation section 221, and the first installation section 221 is restricted in the inlet by the built-in retaining beads 30, and the installation section 22 restricted in the outlet 122 is the second installation section 222, and the second installation section 222 is restricted in the outlet 122 by the built-in retaining beads 30; such an arrangement enables the hose 20 to be firmly restricted in the inlet 121 and the outlet 122, and the hose 20 is not easy to fall off from the interface during use, and the product structure has good stability.

[0029] Detailed reference Figure 3 and Figure 4 As shown, the inlet 121 and the outlet 122 have arc segments 124 arranged oppositely, and the arc segments 124 arranged oppositely constitute a limiting cavity 125, and the installation segment 22 stretched outward by the blocking bead 30 is limited in the limiting cavity 125. Specifically, the two arc segments 124 are arranged left and right, and the front and rear of the limiting cavity 125 are openings 126 for the hose 20 to pass through, and the diameter of the opening 126 is smaller than the limiting cavity 125. The bottom of the limiting cavity 125 is an installation port 127, and the installation port 127 is connected to the limiting cavity 125 and the openings 126 on the front and rear sides at the same time. During installation, the installation segment 22 stretched outward by the blocking bead 30 is installed into the limiting cavity 125 from the installation port 127, and is limited by the arc segments 124 arranged oppositely. In this way, the installation segment 22 can be well installed and limited.

[0030] In this embodiment, the hose 20 further includes a first connecting section 231 and a second connecting section 232. The first connecting section 231 is located outside the peristaltic pump body and connected to the first mounting section 221; the second connecting section 232 is located outside the peristaltic pump body and connected to the second mounting section 222. The first connecting section 231 and the second connecting section 232 are respectively used for external devices, such as the first connecting section 231 is used to connect to a fluid source, and the second connecting section 232 is used to connect to a user device.

[0031] Furthermore, in order to prevent the first connecting section 231 and the second connecting section 232 of the hose 20 from being bent and affecting the flow of the fluid, in this embodiment, a support spring 40 (defined as a first support spring 41) is installed in the first connecting section 231 of the hose 20, and the first support spring 41 abuts against the blocking bead 30 in the first installation section 231; and a support spring 40 (defined as a second support spring 42) is installed in the second connecting section 232 of the hose 20, and the second support spring 42 abuts against the blocking bead 30 in the second installation section 232. The support springs 40 are installed in both the first connecting section 231 and the second connecting section 232, which can effectively prevent the external pipe sections (i.e., the first connecting section 231 and the second connecting section 232) from being bent and affecting the flow of the fluid. At the same time, the support springs 40 abut against the blocking bead 30 to achieve position limiting, so that the support spring 40 can be prevented from entering the action section 21 of the hose 20 and causing the rotating extrusion group 13 to get stuck or damage the hose 20.

[0032] More specifically, the retaining bead 30 has an abutment portion 32 disposed in the through hole 31 , and the support spring 40 passes through the through hole 31 of the retaining bead 30 and abuts against the abutment portion 32 ; in this way, the support spring 40 can be positioned and installed.

[0033] The above arrangement of the hose 20 is one of the preferred solutions. Of course, in other embodiments, the structure of the hose 20 is not limited thereto. For example, the hose 20 may be provided with a first connecting section 231 or a second connecting section 232 alone; or, the first connecting section 231 or the second connecting section 232 may not be provided with a structure supporting the spring 40. Alternatively, the hose 20 may not be provided with a first connecting section 231 or a second connecting section 232, and a joint may be directly connected to the outside of the mounting section 22. The structures for limiting the inlet 121 and the outlet 122 of the mounting section 22 may also be provided with other structures, such as replacing the arc section 124 with a V-shaped angled section.

[0034] The rotary extrusion group 13 includes a rotary bracket 131 and a plurality of rollers 134. The rotary bracket 131 has a central shaft hole 133 and a plurality of mounting shafts 132 located outside the central shaft hole 133. Each mounting shaft 132 is equipped with a roller 134. In this specific embodiment, the number of rollers 134 and mounting shafts 132 is three, and the three rollers 134 are respectively mounted on the three mounting shafts 132. The driving shaft of the driving motor 11 is connected to the central shaft hole 133. The driving motor 11 drives the rotary bracket 131 to rotate around the central shaft hole 133. The rotation of the rotary extrusion group 13 sequentially squeezes the action section 21 of the hose 20 through the plurality of rollers 134.

[0035] The installation shell 12 has a bottom opening connected to the accommodating cavity 123, and the bottom opening is provided to facilitate assembly and disassembly operations. A bottom cover 14 is also included, and the bottom cover 14 is covered on the installation shell 12 to cover the bottom opening to play a protective role.

[0036] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A peristaltic pump, comprising a peristaltic pump body and a hose, wherein the peristaltic pump body has a receiving chamber and an inlet and an outlet communicating with the receiving chamber, and a rotary extrusion group of the peristaltic pump body is located in the receiving chamber, characterized in that: The hose includes an action section and installation sections at both ends of the action section. The action section of the hose is arranged in the accommodating cavity to cooperate with the extrusion of the rotary extrusion group. The two installation sections of the hose are equipped with stop beads. The stop beads push the tube wall of the installation section outward. The stop beads have through holes. The two installation sections of the hose are respectively restricted in the inlet and outlet by the stop beads.

2. The peristaltic pump according to claim 1, characterized in that: The inlet and the outlet have arc segments arranged opposite to each other, and the arc segments arranged opposite to each other form a limiting cavity, and the installation section stretched outward by the retaining beads is restricted in the limiting cavity.

3. The peristaltic pump according to claim 1, characterized in that: The installation section restricted at the inlet is defined as a first installation section, and the hose further comprises a first connecting section, which is located outside the peristaltic pump body and connected to the first installation section.

4. The peristaltic pump according to claim 3, characterized in that: A support spring is installed in the first connecting section of the hose, and the support spring abuts against a stop bead in the first mounting section.

5. The peristaltic pump according to claim 1, characterized in that: The installation section restricted at the outlet is defined as a second installation section, and the hose further comprises a second connecting section, which is located outside the peristaltic pump body and connected to the second installation section.

6. The peristaltic pump according to claim 5, characterized in that: A support spring is installed in the second connecting section of the hose, and the support spring abuts against a stop bead in the second mounting section.

7. The peristaltic pump according to claim 4 or 6, characterized in that: The retaining bead has an abutment portion arranged in the through hole, and the supporting spring passes through the through hole of the retaining bead and abuts against the abutment portion.

8. The peristaltic pump according to claim 1, characterized in that: The peristaltic pump body has a bottom opening connected to the accommodating cavity, and also includes a bottom cover, which is covered on the peristaltic pump body to cover the bottom opening.

9. The peristaltic pump according to claim 1, characterized in that: The rotary extrusion group includes a rotary bracket and multiple rollers. The rotary bracket has a central axis hole and multiple mounting shafts located outside the central axis hole, and each mounting shaft is equipped with a roller. The rotation of the rotary extrusion group squeezes the active section of the hose in sequence through the multiple rollers.

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