Peristaltic pump capable of preventing motor shaft from slipping

Abstract

The peristaltic pump capable of preventing the motor shaft from slipping comprises an installation shell and a motor fixedly arranged on the installation shell, the motor is provided with a driving shaft, an installation groove is formed in the installation shell, a plurality of idler wheels are arranged in the installation groove, a hose is arranged between the groove wall of the installation groove and the idler wheels in a clamped mode, and the motor shaft is arranged in the hose. The two ends of the hose penetrate out of the mounting shell; the device further comprises a driven shaft connected with the driving shaft in a split mode, the driving shaft is embedded in the lower end of the driven shaft, the driven shaft penetrates through the installation shell and abuts against all the rolling wheels, and the driven shaft and the driving shaft are selected in a split mode, and the driving shaft is embedded in the lower end of the driven shaft. According to the peristaltic pump, lubricating oil in the motor can be prevented from flowing to the position between the driven shaft and the idler wheel to cause idling of the motor, and according to the use requirement of the peristaltic pump, the peristaltic pump is simple in structure, few in parts, relatively low in production cost and more popular in price.

Description

Technical Field

[0001] This utility model relates to the field of peristaltic pump technology, specifically to a peristaltic pump that prevents motor shaft slippage. Background Technology

[0002] A peristaltic pump is a positive displacement pump that delivers fluid by compressing a flexible tube. Its working principle is similar to squeezing a fluid-filled tube with your finger; as your finger slides forward, the fluid moves forward. The peristaltic pump is driven by a motor-driven shaft that rotates rollers. These rollers sequentially compress the flexible tube, creating a continuous "compression-release" cycle that generates negative pressure within the tube, thus propelling the fluid in one direction.

[0003] Peristaltic pumps require a motor, and the motor bearings contain lubricating oil. During motor assembly, the drive shaft passes through the bearings, resulting in the drive shaft being covered in lubricating oil. When the motor is running, the lubricating oil from the bearings also seeps into the drive shaft, causing the drive shaft to slip against the rollers, resulting in the motor running idle and causing product failure. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to propose a peristaltic pump that prevents motor shaft slippage, so as to solve the problems mentioned in the background section above.

[0005] This utility model is achieved through the following technical solution:

[0006] A peristaltic pump for preventing motor shaft slippage includes a mounting housing, a motor fixed to the mounting housing, the motor having a drive shaft, the mounting housing having a mounting groove, a plurality of rollers being provided in the mounting groove, a flexible tube being sandwiched between the groove wall and the rollers, and both ends of the flexible tube extending out of the mounting housing; it also includes a driven shaft separately connected to the drive shaft, the drive shaft being embedded in the lower end of the driven shaft, the driven shaft passing through the mounting housing and abutting against all the rollers.

[0007] Furthermore, the driven shaft includes a boss portion, the diameter of the drive shaft is smaller than the diameter of the boss portion, the boss portion is provided with a first transmission plane that extends radially therethrough, the drive shaft is embedded in the boss portion, and the drive shaft is provided with a second transmission plane that abuts against the first transmission plane.

[0008] Furthermore, the driven shaft is centrally located in the mounting groove, and at least two rollers are arranged around the outer periphery of the driven shaft.

[0009] Furthermore, it also includes a mounting base, which has a plurality of spaced mounting shafts and a connecting plate connecting the mounting shafts. The mounting base is embedded in the bottom of the mounting groove, and the roller is rotatably sleeved on the mounting shaft.

[0010] Furthermore, it also includes an end cap, which is fixedly connected to the mounting shell and blocks the opening of the mounting groove.

[0011] Furthermore, a ball bearing is provided between the end cap and the driven shaft, with the upper end of the ball bearing embedded in the end cap.

[0012] Furthermore, the roller has a hollowed-out section.

[0013] The beneficial effects of this utility model are as follows: A peristaltic pump for preventing motor shaft slippage includes a mounting housing, a motor fixed to the mounting housing, a drive shaft provided by the motor, a mounting groove formed in the mounting housing, a plurality of rollers provided in the mounting groove, a flexible tube sandwiched between the groove wall and the rollers, and both ends of the flexible tube extending out of the mounting housing; it also includes a driven shaft separately connected to the drive shaft, the drive shaft being embedded in the lower end of the driven shaft, the driven shaft passing through the mounting housing and abutting against all the rollers. By selecting the separate driven shaft and drive shaft, and by embedding the drive shaft in the lower end of the driven shaft, the lubricating oil in the motor can be prevented from flowing between the driven shaft and the rollers, causing the motor to run dry. Moreover, according to the usage requirements of the peristaltic pump, the peristaltic pump of this utility model has a simple structure, fewer parts, relatively low production cost, and a more affordable price. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention.

[0015] Figure 2 This is a diagram of the internal structure of the present invention without the end caps.

[0016] Figure 3 This is an exploded view of the present invention.

[0017] Figure 4 This is a cross-sectional view of the present invention.

[0018] Figure 5 This is a schematic diagram showing the connection between the motor and the driven shaft of this utility model.

[0019] The above figures include the following reference numerals:

[0020] 1. Mounting housing; 11. Mounting groove; 12. Snap fastener; 2. Motor; 21. Drive shaft; 211. Second transmission plane; 3. Roller; 31. Hollowed-out part; 4. Flexible hose; 5. Driven shaft; 51. Boss part; 511. First transmission plane; 6. Mounting base; 61. Mounting shaft; 62. Connecting plate; 7. End cover; 71. Hook; 8. Ball bearing; 9. Screw. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is intended to aid in understanding this utility model, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] Reference Figures 1 to 5 As shown, a peristaltic pump for preventing motor shaft slippage includes a mounting housing 1, a motor 2 fixed to the mounting housing 1, the motor 2 having a drive shaft 21, the mounting housing 1 having a mounting groove 11, a plurality of rollers 3 being provided in the mounting groove 11, a flexible hose 4 being sandwiched between the groove wall of the mounting groove 11 and the rollers 3, the two ends of the flexible hose 4 extending out of the mounting housing 1; and a driven shaft 5 separately connected to the drive shaft 21, the drive shaft 21 being embedded in the lower end of the driven shaft 5, the driven shaft 5 passing through the mounting housing 1 and abutting against all the rollers 3.

[0023] By using a separate driven shaft 5 and drive shaft 21, and by embedding drive shaft 21 inside the lower end of driven shaft 5, the lubricating oil in motor 2 can be prevented from flowing between driven shaft 5 and roller 3, thus preventing motor 2 from running idle.

[0024] Furthermore, the driven shaft 5 with different diameters can be replaced according to the usage requirements of the peristaltic pump. For example, when the peristaltic pump needs to have a sealing function, the shaft diameter of the driven shaft 5 should be larger so that the roller 3 can squeeze the hose 4 to the maximum extent. When the peristaltic pump does not need a sealing function, the shaft diameter of the driven shaft 5 should be smaller so that the compression of the hose 4 is smaller. When the motor 2 drives the roller 3 to squeeze the hose 4, the energy consumed will be reduced, and the corresponding operating current of the motor 2 will be smaller.

[0025] The driven shaft 5 includes a boss portion 51. The diameter of the drive shaft 21 is smaller than the diameter of the boss portion 51. The boss portion 51 has a first transmission plane 511 extending radially through it. The drive shaft 21 is embedded in the boss portion 51. The drive shaft 21 has a second transmission plane 211 that abuts against the first transmission plane 511. Through the above arrangement, the drive shaft 21 can stably drive the driven shaft 5 while minimizing contact with the surface of the drive shaft 21 within the lubricating oil flow channel of the motor 2.

[0026] The driven shaft 5 is centrally located in the mounting groove 11, and at least two rollers 3 are arranged around the outer periphery of the driven shaft 5. Preferably, refer to... Figure 2As shown, there are three rollers 3, which are evenly spaced around the outer periphery of the driven shaft 5 to ensure the squeezing effect on the hose 4 and increase the flow rate of the liquid in the hose 4.

[0027] It also includes a mounting base 6, which has several spaced mounting shafts 61 and a connecting plate 62 connecting the mounting shafts 61. The mounting base 6 is embedded in the bottom of the mounting groove 11, and the roller 3 is rotatably sleeved on the mounting shafts 61. The mounting base 6 is used to position the roller 3.

[0028] Furthermore, the detachable structure of the mounting base 6 and the driven shaft 5 allows for adjustment of the compression degree of the hose 4 by replacing the driven shaft 5 with different diameters and the mounting base 6 with different mounting shaft 61 spacings, according to the usage requirements of the peristaltic pump. For example, when the peristaltic pump requires a sealing function, a larger shaft diameter is selected for the driven shaft 5, and the distance between the mounting shaft 61 and the groove wall of the mounting groove 11 is minimized to maximize the compression of the hose 4. When the motor 2 is not working, liquid cannot pass through the hose 4, achieving the sealing function. When the peristaltic pump does not require a sealing function, a smaller shaft diameter is selected for the driven shaft 5, and the spacing of the mounting shafts 61 is also made smaller. This results in a smaller compression of the hose 4, reducing the energy consumed by the motor 2 when driving the roller 3 to compress the hose 4, and consequently, reducing the operating current of the motor 2.

[0029] It also includes an end cap 7, which is fixedly connected to the mounting shell 1 and blocks the opening of the mounting groove 11, thereby protecting the components placed in the mounting groove 11.

[0030] Specifically, the mounting shell 1 is provided with a buckle 12, and the end cover 7 is provided with a hook 71 that extends downward and engages with the buckle 12. The engagement of the hook 71 and the buckle 12 facilitates the assembly of the mounting shell 1 and the end cover 7.

[0031] A ball bearing 8 is provided between the end cap 7 and the driven shaft 5, with the upper end of the ball bearing 8 embedded in the end cap 7. By providing the ball bearing 8, the problem of the driven shaft 5 having no positioning in the axial upward direction can be avoided, thus adding the ball bearing 8 at the top as a support.

[0032] The roller 3 is provided with a hollow part 31. The reasonable selection of the hollow part 31 can not only reduce the amount of material used, but also improve the strength and rotational stability of the roller 3 to a certain extent.

[0033] During assembly, the motor 2 is connected to the mounting housing 1 by two or more screws 9. The bottom of the mounting groove 11 has a slot for the positioning mounting seat 6. The mounting seat 6 is placed into the slot, then the roller 3 is placed into the mounting shaft 61, and the hose 4 is placed between the groove wall of the mounting groove 11 and the roller 3. Then, the upper part of the ball bearing 8 is inserted into the end cover 7, and finally, the buckle 12 of the end cover 7 is fastened into the hook 71 to complete the assembly. The assembly operation is simple and convenient, the structure is simple, there are few parts, the production cost is relatively low, and the price is more affordable.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 a limitation of this utility model.

[0035] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A peristaltic pump for preventing motor shaft slippage, comprising a mounting housing (1), a motor (2) fixedly mounted in the mounting housing (1), the motor (2) having a drive shaft (21), characterized in that: The mounting shell (1) has a mounting groove (11) and a plurality of rollers (3) are provided in the mounting groove (11). A flexible hose (4) is sandwiched between the groove wall of the mounting groove (11) and the rollers (3). Both ends of the flexible hose (4) extend out of the mounting shell (1). It also includes a driven shaft (5) that is separately connected to the drive shaft (21), the drive shaft (21) being embedded in the lower end of the driven shaft (5), the driven shaft (5) passing through the mounting housing (1) and abutting against all the rollers (3).

2. A peristaltic pump for preventing motor shaft slippage according to claim 1, characterized in that: The driven shaft (5) includes a boss (51), the diameter of the drive shaft (21) is smaller than the diameter of the boss (51), the boss (51) is provided with a first transmission plane (511) that extends radially through it, the drive shaft (21) is embedded in the boss (51), and the drive shaft (21) is provided with a second transmission plane (211) that abuts against the first transmission plane (511).

3. A peristaltic pump for preventing motor shaft slippage according to claim 1, characterized in that: The driven shaft (5) is centrally located in the mounting groove (11), and at least two rollers (3) are arranged around the outer periphery of the driven shaft (5).

4. A peristaltic pump for preventing motor shaft slippage according to claim 1, characterized in that: It also includes a mounting base (6), which has a plurality of spaced mounting shafts (61) and a connecting plate (62) connecting the mounting shafts (61). The mounting base (6) is embedded in the bottom of the mounting groove (11), and the roller (3) is rotatably sleeved on the mounting shaft (61).

5. A peristaltic pump for preventing motor shaft slippage according to claim 1, characterized in that: It also includes an end cap (7), which is fixedly connected to the mounting shell (1) and the end cap (7) blocks the opening of the mounting groove (11).

6. A peristaltic pump for preventing motor shaft slippage according to claim 5, characterized in that: A ball bearing (8) is provided between the end cap (7) and the driven shaft (5), and the upper part of the ball bearing (8) is embedded in the end cap (7).

7. A peristaltic pump for preventing motor shaft slippage according to any one of claims 1 to 6, characterized in that: The roller (3) has a hollowed-out part (31).

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