peristaltic pump

Abstract

The peristaltic pump claimed in this application includes a motor, a transmission assembly, a roller support, and multiple rollers. The transmission assembly includes a worm and a worm wheel. The worm meshes with the worm wheel and is connected to the motor for transmission. The worm wheel has multiple support portions. The roller support is independent of the worm wheel and is connected to it for transmission. The roller support has multiple rollers, each corresponding to one of the support portions, and the rollers can be inserted into the corresponding support portions. The multiple rollers correspond one-to-one with the multiple rollers, and the rollers are fitted onto the corresponding rollers. Furthermore, the multiple rollers can rotate synchronously under the drive of the roller support to compress the pump tube of the peristaltic pump. This allows the peristaltic pump to use the rollers built into the roller support as the transmission component to drive the rollers during operation, eliminating the need for separate metal needle rollers. This not only simplifies the assembly process of the peristaltic pump but also effectively reduces the use of raw materials, thereby reducing the overall production cost of the peristaltic pump.

Description

Technical Field

[0001] This utility model belongs to the technical field of flow control devices, and in particular relates to a peristaltic pump. Background Technology

[0002] A peristaltic pump is a positive displacement pump that delivers fluid by squeezing a flexible pump tube.

[0003] Currently, traditional peristaltic pumps typically use metal needle rollers as the transmission component for the roller support to drive the roller. Therefore, the metal needle rollers need to be axially fixed to the roller support through a press-fit process. After assembly, the roller is then fitted onto the corresponding metal needle rollers, allowing the roller support to synchronously drive the roller rotation via the metal needle rollers. This rolls and compresses the flexible pump tubing, ultimately enabling the peristaltic pump to pump water. However, this method of assembling the roller on the roller support has significant drawbacks: firstly, the raw material cost of the metal needle rollers is relatively high; secondly, the metal needle rollers require a tight assembly process to press them onto the roller support, which not only increases the complexity of the overall peristaltic pump manufacturing process but also drives up the overall production cost. Utility Model Content

[0004] In view of this, it is necessary to provide a peristaltic pump for solving the above-mentioned technical problems.

[0005] A peristaltic pump, the peristaltic pump comprising: Electric motor; The transmission assembly includes a worm and a worm wheel, wherein the worm meshes with the worm wheel and is connected to the motor for transmission, and the worm wheel has multiple support portions formed on it; A roller support is set independently of the worm gear and connected to the worm gear drive. The roller support has multiple rollers, each of which corresponds to one of the multiple support parts, and each roller can be inserted into the corresponding support part. Multiple rollers correspond one-to-one with multiple rollers, and the rollers are fitted onto the corresponding rollers. Furthermore, the multiple rollers can rotate synchronously under the drive of the roller support to squeeze the pump tube of the peristaltic pump.

[0006] It is understandable that by using the support part on the worm gear to assist in supporting the roller of the roller bracket, the roller on the roller bracket can be directly used as a transmission component to drive the roller to rotate, thereby saving the function of separate metal needle rollers. This not only simplifies the overall assembly process of the peristaltic pump, but also reduces the use of raw materials, thereby reducing the overall production cost of the peristaltic pump.

[0007] In one embodiment, the roller is cylindrical, and the support portion is inserted into the corresponding roller.

[0008] In one embodiment, the roller support includes a support body, and the roller support can be connected to the worm gear through the support body; The multiple rollers are connected to the main body of the support in an integrated structure.

[0009] In one embodiment, the roller support is made of plastic.

[0010] In one embodiment, the roller bracket can be inserted into the worm gear to limit the circumferential positioning of the roller bracket and the worm gear; The peristaltic pump also includes a connector that passes through the worm gear and connects to the roller support.

[0011] In one embodiment, the roller support also has a connector that can be plugged into the worm gear to assemble and position the roller support onto the worm gear.

[0012] It is understandable that the insertion and engagement between the connector on the roller bracket and the worm gear serves to position them during assembly. This prevents mis-assembly of the roller bracket and worm gear, ensuring that the rollers on the roller bracket can be accurately aligned and smoothly engage with the support on the worm gear, thus improving the ease of assembly between the roller bracket and worm gear.

[0013] In one embodiment, the connector is triangular in shape.

[0014] In one embodiment, the worm gear is configured as a one-piece plastic component.

[0015] In one embodiment, the peristaltic pump further includes a motor mount and a top cover, the top cover being fitted onto and connected to the motor mount; The upper cover and the motor mounting base form a receiving cavity, which is used to accommodate the transmission assembly and the roller bracket; and the motor body is inserted into the motor mounting base and connected to the motor mounting base.

[0016] It is understandable that using a motor mounting bracket and a top cover to construct the housing structure of the peristaltic pump allows it to save on intermediate plates compared to existing peristaltic pumps, and simplifies the housing structure. This not only reduces the overall size of the peristaltic pump, but also further reduces its overall production cost.

[0017] In one embodiment, the top cover is snap-fitted to the motor mounting bracket.

[0018] It is understandable that a snap-fit ​​connection is used to achieve the assembly connection between the top cover and the motor mounting base, which facilitates the assembly of the top cover and the motor mounting base.

[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: The peristaltic pump claimed in this application uses a support part on a worm gear to assist in supporting the rollers of the roller bracket, so that the rollers built into the roller bracket can directly drive the roller to rotate as a transmission component. This saves the need for separate metal needle rollers, which not only simplifies the overall assembly process of the peristaltic pump, but also reduces the use of raw materials, thereby reducing the overall production cost of the peristaltic pump. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the peristaltic pump provided in this application.

[0022] Figure 2 This is an exploded view of the peristaltic pump provided in this application.

[0023] Figure 3 This is a cross-sectional view of the peristaltic pump provided in this application.

[0024] Figure 4 This is a schematic diagram of the roller support structure in this application.

[0025] Reference numerals: 100, peristaltic pump; 10, motor; 11, machine body; 20, transmission assembly; 21, worm gear; 22, worm wheel; 221, support part; 30, roller bracket; 31, roller; 32, bracket body; 321, connector; 40, roller; 51, motor mounting base; 52, top cover; 101, accommodating cavity. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that when a component is said to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or may have an intervening component.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] like Figures 1 to 4 As shown, a peristaltic pump 100 provided in one embodiment of this application includes a motor 10, a transmission assembly 20, a roller support 30, and multiple rollers 40. The transmission assembly 20 includes a worm 21 and a worm wheel 22. The worm 21 meshes with the worm wheel 22 and is connected to the motor 10 for transmission. Multiple support portions 221 are formed on the worm wheel 22. The roller support 30 is set independently of the worm wheel 22 and is connected to the worm wheel 22 for transmission. The roller support 30 has multiple rollers 31, each corresponding to one of the multiple support portions 221, and the rollers 31 can be inserted into the corresponding support portions 221. Multiple rollers 40 correspond one-to-one with the multiple rollers 31, and the rollers 40 are fitted onto the corresponding rollers 31. The multiple rollers 40 can rotate synchronously under the drive of the roller support 30 to squeeze the pump tube of the peristaltic pump 100 (not shown in the figure). Here, the number of rollers 40 is set to two.

[0030] As can be seen from the above, the peristaltic pump 100 of this application uses the support part 221 on the worm gear 22 to assist in supporting the roller 31 of the roller bracket 30, so that the roller 31 on the roller bracket 30 can be directly used as a transmission component to drive the roller 40 to rotate, thereby saving the function of separate metal needle rollers. This not only simplifies the overall assembly process of the peristaltic pump 100, but also reduces the use of raw materials, thereby reducing the overall production cost of the peristaltic pump 100.

[0031] It should be noted that, since the peristaltic pump 100 of this application uses the roller 31 built into the roller bracket 30 to act as a metal needle roller, the peristaltic pump 100 can save on the metal needle roller made of metal material during manufacturing compared with the existing peristaltic pump structure. On the other hand, it can also eliminate the assembly process of pressing the metal needle roller on the roller bracket. This can reduce the overall production cost of the peristaltic pump 100.

[0032] In one embodiment, the worm gear 22 is configured as a one-piece plastic part, that is, the support portion 221 on the worm gear 22 can be injection molded together with the worm gear 22, which facilitates the overall production of the worm gear 22. Of course, in other embodiments, the support portion 221 on the worm gear 22 can also be formed on the worm gear 22 using a secondary molding process, which will not be elaborated here.

[0033] like Figures 2 to 4 As shown, in one embodiment, the roller 31 is cylindrical, and the support portion 221 can be inserted into the corresponding roller 31, achieving a plug-in fit between the roller 31 and the support portion 221. This allows the support portion 221 to support the free end of the roller 31, ensuring that the roller 31 on the roller bracket 30 has sufficient structural strength to drive the roller 40 to rotate. Of course, in other embodiments, the roller 31 can be directly inserted into the worm gear 22. For this purpose, the support portion 221 can be configured as a groove on the worm gear 22, which will not be elaborated upon here.

[0034] like Figures 2 to 4 As shown, in one embodiment, the roller support 30 includes a support body 32, and the roller support 30 can be connected to the worm gear 22 via the support body 32. Here, multiple rollers 31 are connected to the support body 32 as an integral structure, and specifically, the roller support 30 can be set as an integral plastic part.

[0035] like Figure 3 , Figure 4As shown, in one embodiment, the roller support 30 can be inserted into the worm gear 22 to limit the circumferential movement of the roller support 30 and the worm gear 22; furthermore, the peristaltic pump 100 also includes a connector (not shown), which can be connected to the roller support 30 after passing through the worm gear 22. That is, in this embodiment, the connector is used to connect and fix the worm gear 22 and the roller support 30, and the worm gear 22 can drive the roller support 30 to rotate by the mating portion of the two when they are inserted into each other, thereby achieving the purpose of driving the roller 40 to rotate. Here, the connector can specifically be a screw, bolt, etc., specifically connected to the roller support 30 by a thread. Of course, in other embodiments, the connector is also connected to the roller support 30 by a snap-fit ​​or tight-fitting method.

[0036] like Figures 2 to 4 As shown, in this embodiment, the roller support 30 also has a connector 321, which can be inserted and engaged with the worm gear 22 to assemble and position the roller support 30 onto the worm gear 22. In other words, this embodiment utilizes the insertion and engagement between the connector 321 on the roller support 30 and the worm gear 22 to achieve assembly positioning, thereby preventing mis-assembly between the roller support 30 and the worm gear 22. This prevents mis-assembly during the assembly of the roller support 30 and the worm gear 22, ensuring that the roller 31 on the roller support 30 can be accurately aligned and smoothly engaged with the support portion 221 on the worm gear 22, thus improving the ease of assembly between the roller support 30 and the worm gear 22.

[0037] Here, as Figure 4 As shown, the connector 321 is triangular. Of course, in other embodiments, the connector 321 may also be trapezoidal, square, or other irregular shapes, which will not be elaborated here.

[0038] like Figures 2 to 4As shown, in one embodiment, the peristaltic pump 100 further includes a motor mounting base 51 and a top cover 52. The top cover 52 covers the motor mounting base 51 and is connected to it. The top cover 52 and the motor mounting base 51 enclose a receiving cavity 101, which is used to accommodate the transmission assembly 20 and the roller support 30. Furthermore, the body 11 portion of the motor 10 is inserted into the motor mounting base 51 and connected to it. In other words, this embodiment of the peristaltic pump 100 uses only the motor mounting base 51 and the top cover 52 to construct its housing structure. This saves on intermediate plates compared to existing peristaltic pumps and simplifies the housing structure, thus reducing the overall volume of the peristaltic pump 100 and further lowering its overall production cost. It should be noted that the motor mounting base 51 and the body 11 can be connected by screws that pass through the motor mounting base 51 and are screwed into the body 11.

[0039] like Figure 1 , Figure 2 As shown, in one embodiment, the upper cover 52 is connected to the motor mounting base 51 by a snap-fit ​​connection, thus achieving the assembly connection between the upper cover 52 and the motor mounting base 51. In this process, the snap-fit ​​connection facilitates the assembly of the upper cover 52 and the motor mounting base 51. Of course, in other embodiments, the upper cover 52 and the motor mounting base 51 can also be connected by adhesive bonding, welding, or other methods, which will not be elaborated upon here.

[0040] In summary, the peristaltic pump 100 of this application uses the roller 31 on the integrally injection-molded roller bracket 30 as the transmission component when the roller 40 rotates, and only the upper cover 52 and the motor mounting base 51 are combined to form the housing structure of the peristaltic pump 100. Compared with existing peristaltic pumps, the peristaltic pump 100 eliminates the need for metal needle rollers and intermediate plates, and saves on the components of the peristaltic pump 100. This not only simplifies the assembly process of the peristaltic pump 100, but also reduces the overall production cost of the peristaltic pump 100.

[0041] 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.

[0042] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. A peristaltic pump, characterized in that, The peristaltic pump (100) includes: Motor (10); The transmission assembly (20) includes a worm (21) and a worm wheel (22), wherein the worm (21) meshes with the worm wheel (22) and is connected to the motor (10) for transmission, wherein the worm wheel (22) is provided with a plurality of support parts (221). The roller support (30) is set independently of the worm gear (22) and is connected to the worm gear (22) for transmission. The roller support (30) has multiple rollers (31), and the multiple rollers (31) correspond one-to-one with multiple support parts (221). The rollers (31) can be inserted and cooperated with the corresponding support parts (221). Multiple rollers (40) correspond one-to-one with multiple rollers (31), and the rollers (40) are fitted onto the corresponding rollers (31). Furthermore, the multiple rollers (40) can rotate synchronously under the drive of the roller support (30) to squeeze the pump tube of the peristaltic pump (100).

2. The peristaltic pump according to claim 1, characterized in that, The roller (31) is cylindrical, and the support portion (221) is partially inserted into the corresponding roller (31).

3. The peristaltic pump according to claim 2, characterized in that, The roller support (30) includes a support body (32), and the roller support (30) can be connected to the worm gear (22) through the support body (32); Among them, the multiple rollers (31) are connected to the main body of the support (32) in an integrated structure.

4. The peristaltic pump according to claim 3, characterized in that, The roller support (30) is made of plastic.

5. The peristaltic pump according to claim 1, characterized in that, The roller bracket (30) can be inserted into the worm gear (22) to limit the circumferential positioning of the roller bracket (30) and the worm gear (22); The peristaltic pump (100) also includes a connector that is connected to the roller support (30) after passing through the worm gear (22).

6. The peristaltic pump according to claim 1, characterized in that, The roller support (30) also has a connector (321) that can be plugged into the worm gear (22) to assemble and position the roller support (30) onto the worm gear (22).

7. The peristaltic pump according to claim 6, characterized in that, The connector (321) is triangular in shape.

8. The peristaltic pump according to claim 1, characterized in that, The worm gear (22) is a one-piece plastic component.

9. The peristaltic pump according to claim 1, characterized in that, The peristaltic pump (100) also includes a motor mounting base (51) and a top cover (52), the top cover (52) covering the motor mounting base (51) and connected to the motor mounting base (51); The upper cover (52) and the motor mounting base (51) form a receiving cavity (101), which is used to accommodate the transmission assembly (20) and the roller bracket (30); and the body (11) part of the motor (10) is inserted into the motor mounting base (51) and connected to the motor mounting base (51).

10. The peristaltic pump according to claim 9, characterized in that, The upper cover (52) is connected to the motor mounting base (51) by a snap-fit.

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