peristaltic pump

Abstract

The peristaltic pump claimed in the application comprises a shell assembly, a driving assembly and a roller assembly, the shell assembly comprises a motor fixing base, an intermediate partition plate and an upper cover, the intermediate partition plate is pressed and limited on the motor fixing base by the upper cover, wherein a guide column is formed on the motor fixing base, and a positioning convex part is formed on the intermediate partition plate; the driving assembly comprises a motor, a worm and a turbine, the worm is respectively in transmission cooperation with the turbine and the motor, one end of the turbine is in plug-in cooperation with the guide column, the other end of the turbine is in plug-in cooperation with the positioning convex part, and the turbine is limited on the motor fixing base in this way; wherein the upper cover is in clamping and limiting cooperation with the motor fixing base, and the upper cover and the motor fixing base are connected and fixed through a first threaded connecting piece. In this way, the overall assembly process of the peristaltic pump can be effectively simplified, the manual operation steps such as the connection of the first threaded connecting piece are reduced, the assembly process is optimized, the assembly efficiency is improved, and the production and manufacturing are facilitated, which has a significant effect on improving the production efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of flow control, 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, the turbine of existing peristaltic pumps is typically mounted on a motor mount using an oil-impregnated bearing structure, and the motor mount is connected and secured to the top cover with two screws on each side. This design makes the overall assembly process of the peristaltic pump cumbersome, requiring manual operation at multiple stations, which not only increases assembly complexity but also reduces production efficiency. 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:

[0006] The housing assembly includes a motor mounting base, a middle partition, and a top cover. The middle partition is pressed and limited to the motor mounting base by the top cover. A guide post is formed on the motor mounting base, and a positioning protrusion is formed on the middle partition.

[0007] The drive assembly includes a motor, a worm gear, and a turbine. The worm gear is driven by the turbine and the motor respectively. One end of the turbine is inserted into the guide post, and the other end of the turbine is inserted into the positioning protrusion, thereby limiting the turbine to the motor mounting base.

[0008] A roller assembly includes a roller support and a plurality of rollers. One end of the roller support passes through the intermediate partition and engages with the turbine keyway. The plurality of rollers are rotatably mounted on the roller support for extruding pump tubes.

[0009] The upper cover is engaged and limited with the motor mounting base, and the upper cover and the motor mounting base are connected and fixed by a first threaded connector.

[0010] It is understandable that by using guide posts on the motor mounting base to achieve the rotational assembly of the turbine, and using the snap-fit ​​between the top cover and the motor mounting base for auxiliary fixation, the overall assembly process of the peristaltic pump can be effectively simplified, reducing manual operation steps such as the connection of the first threaded connector, optimizing the assembly process, improving assembly efficiency, facilitating production and manufacturing, and playing a significant role in improving production efficiency.

[0011] In one embodiment, the upper cover and the motor mounting base are snapped together by a snap-fit ​​component;

[0012] The number of snap-fit ​​components is configured to be multiple, and the number of the first threaded connector is configured to be one.

[0013] It is understandable that by using multiple snap-fit ​​components and a first threaded connector to achieve the assembly and fixation between the top cover and the motor mounting base, the assembly between the top cover and the motor mounting base can be further facilitated.

[0014] In one embodiment, a protrusion is formed on one of the motor mounting base and the upper cover, and a snap-fit ​​plate is formed on the other, the snap-fit ​​plate being able to snap into the protrusion.

[0015] In one embodiment, an extending protrusion is formed on the upper cover, the extending protrusion passing through the middle partition and extending into the motor mounting base;

[0016] The first threaded connector portion is inserted into the extension protrusion and screwed onto the extension protrusion to fix the upper cover to the motor mounting base.

[0017] In one embodiment, a positioning post is also formed on the intermediate partition plate, which can be inserted and engaged with the motor mounting base to achieve assembly positioning between the intermediate partition plate and the motor mounting base.

[0018] Understandably, the plug-in connection structure between the positioning post and the motor mounting base enables the rapid and precise assembly of the intermediate partition and the motor mounting base. This not only ensures the accurate installation position of the intermediate partition on the motor mounting base but also simplifies the assembly process, allowing the intermediate partition to be conveniently and reliably installed on the motor mounting base.

[0019] In one embodiment, the guide post is in contact with the turbine line surface.

[0020] Understandably, by utilizing the line-to-surface contact between the guide post and the turbine, the frictional resistance encountered by the guide post during turbine rotation can be reduced. This not only reduces mechanical wear between the turbine and the guide post but also ensures the smooth operation of the turbine.

[0021] In one embodiment, the turbine has an abutting ramp, and the turbine abuts against the outer peripheral wall of the guide post via the abutting ramp.

[0022] In one embodiment, the worm gear is configured as a plastic component.

[0023] It is understandable that the worm gear is made of one-piece plastic injection molding, which facilitates the production and manufacturing of the worm gear and reduces the manufacturing cost of the worm gear.

[0024] In one embodiment, the motor mounting bracket is partially sleeved on the motor body, and the motor mounting bracket and the motor body are connected by a second threaded connector.

[0025] In one embodiment, the motor mounting base is provided with a clearance groove, which is correspondingly provided with the second threaded connector, and the clearance groove is used for the corresponding second threaded connector to pass through;

[0026] A cover plate is formed on the intermediate partition plate. The cover plate is correspondingly arranged with the clearance groove, and the cover plate can be inserted and matched with the corresponding clearance groove to cover the corresponding clearance groove.

[0027] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0028] The peristaltic pump claimed in this application achieves turbine rotation assembly by using a guide post on the motor mounting base and uses the snap-fit ​​between the top cover and the motor mounting base for auxiliary fixation. This effectively simplifies the overall assembly process of the peristaltic pump, reduces manual operation steps such as connecting the first threaded connector, optimizes the assembly process, not only improves assembly efficiency but also facilitates manufacturing, and has a significant effect on improving production efficiency. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is a schematic diagram of the peristaltic pump provided in this application.

[0031] Figure 2 This is an exploded view of the peristaltic pump provided in this application.

[0032] Figure 3 This is a cross-sectional view of the peristaltic pump provided in this application.

[0033] Figure 4 for Figure 3 Enlarged view of section A.

[0034] Figure 5 This is a schematic diagram of the motor mounting bracket in this application.

[0035] Figure 6 This is a schematic diagram of the structure of the intermediate partition in this application.

[0036] Figure 7 This is a schematic diagram of the structure of the top cover in this application.

[0037] Reference numerals: 100, peristaltic pump; 10, housing assembly; 110, protrusion; 120, snap-fit ​​plate; 11, motor mounting base; 111, guide post; 1111, outer peripheral wall; 112, clearance groove; 12, intermediate partition plate; 121, positioning protrusion; 122, positioning post; 123, cover plate; 13, top cover; 131, extension protrusion; 132, positioning protrusion; 14, snap-fit ​​component; 20, drive assembly; 21, motor; 211, machine body; 212, rotating shaft; 22, worm gear; 23, turbine; 231, abutment slope; 30, roller assembly; 31, roller bracket; 32, roller; 33, needle roller. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] like Figures 1 to 3As shown, a peristaltic pump 100 provided in one embodiment of this application includes a housing assembly 10, a drive assembly 20, and a roller assembly 30. The housing assembly 10 includes a motor mounting base 11, a middle partition 12, and a top cover 13. The middle partition 12 is pressed and limited to the motor mounting base 11 by the top cover 13. A guide post 111 is formed on the motor mounting base 11, and a positioning protrusion 121 is formed on the middle partition 12. The drive assembly 20 includes a motor 21, a worm gear 22, and a turbine 23. The worm gear 22 is in transmission cooperation with the turbine 23 and the motor 21, respectively. One end of the turbine 23 is connected to the guide post. The turbine 23 is inserted into the positioning protrusion 121 at one end, thereby limiting the turbine 23 to the motor mounting base 11. The roller assembly 30 includes a roller bracket 31 and multiple rollers 32. One end of the roller bracket 31 passes through the intermediate partition 12 and engages with the keyway of the turbine 23. The multiple rollers 32 are rotatably mounted on the roller bracket 31 for extruding the pump tube (not shown). The upper cover 13 is snapped into and limited by the motor mounting base 11, and the upper cover 13 and the motor mounting base 11 are connected and fixed by a first threaded connector (not shown). Here, the first threaded connector is configured as a screw, threaded rod, or bolt, which can be specifically set according to the needs of use, and will not be elaborated here.

[0042] As can be seen from the above, the peristaltic pump 100 of this application achieves the rotational assembly of the turbine 23 by using the guide post 111 on the motor mounting base 11, and uses the snap-fit ​​between the upper cover 13 and the motor mounting base 11 for auxiliary fixation. This can effectively simplify the overall assembly process of the peristaltic pump 100, reduce manual operation steps such as the connection of the first threaded connector, optimize the assembly process, not only improve assembly efficiency, but also facilitate production and manufacturing, and has a significant effect on improving production efficiency.

[0043] It should be noted that by utilizing the snap-fit ​​feature between the upper cover 13 and the motor mounting base 11, the snap-fit ​​limit between the upper cover 13 and the motor mounting base 11 can be achieved after the upper cover 13 is assembled on the motor mounting base 11. Then, the upper cover 13 is fixed to the motor mounting base 11 using the first threaded connector. Obviously, this simplifies the assembly between the upper cover 13 and the motor mounting base 11.

[0044] like Figure 1As shown, in one embodiment, the upper cover 13 and the motor mounting base 11 are engaged by snap-fit ​​components 14; and the number of snap-fit ​​components 14 is configured to be multiple, while the number of first threaded connectors is configured to be one. That is, in this embodiment, the upper cover 13 and the motor mounting base 11 are assembled and fixed by multiple snap-fit ​​components 14 and one first threaded connector, which further facilitates the assembly between the upper cover 13 and the motor mounting base 11. Here, the number of snap-fit ​​components 14 is configured to be two, and the two snap-fit ​​components 14 are disposed on one side of the housing assembly 10, and the distance between the two snap-fit ​​components 14 and the first threaded connector is equal.

[0045] like Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, in one embodiment, a protrusion 110 is formed on one of the motor mounting base 11 and the upper cover 13, and a snap-fit ​​plate 120 is formed on the other. The snap-fit ​​plate 120 can engage with the protrusion 110 to achieve the snap-fit ​​engagement between the motor mounting base 11 and the upper cover 13. Here, the protrusion 110 is disposed on the motor mounting base 11, and the snap-fit ​​plate 120 is disposed on the upper cover 13. It can be understood that in other embodiments, the protrusion may also be concentrated on the upper cover 13, and the snap-fit ​​plate may also be concentrated on the motor mounting base 11; or, protrusions and snap-fit ​​plates may be provided on both the upper cover 13 and the motor mounting base 11, which will not be elaborated here.

[0046] like Figure 3 , Figure 7 As shown, in one embodiment, an extending protrusion 131 is formed on the upper cover 13. The extending protrusion 131 passes through the intermediate partition 12 and extends into the motor mounting base 11. A first threaded connector is inserted into the extending protrusion 131 and screwed onto it, for fixing the upper cover 13 to the motor mounting base 11. It is understood that in other embodiments, the first threaded connector can also pass through the intermediate partition 12 and be screwed onto the upper cover 13, or the extending protrusion can be disposed on the motor mounting base 11, which will not be elaborated here.

[0047] like Figure 3 , Figure 7 As shown, in one embodiment, a positioning protrusion 132 is also formed on the upper cover 13. The positioning protrusion 132 is partially inserted into the roller bracket 31, thereby realizing the assembly limit of the roller bracket 31 on the turbine 23.

[0048] like Figure 6As shown, in one embodiment, a positioning post 122 is also formed on the intermediate partition 12. The positioning post 122 can be inserted and engaged with the motor mounting base 11 to achieve assembly positioning between the intermediate partition 12 and the motor mounting base 11. This enables rapid and accurate assembly between the intermediate partition 12 and the motor mounting base 11, ensuring accurate installation of the intermediate partition 12 on the motor mounting base 11 and simplifying the assembly process, allowing the intermediate partition 12 to be conveniently and reliably installed on the motor mounting base 11. Here, the number of positioning posts 122 is configured to be two.

[0049] like Figure 3 , Figure 4 As shown, in one embodiment, the guide post 111 is in line-surface contact with the turbine 23, which can reduce the frictional resistance of the turbine 23 during rotation by the guide post 111. This not only reduces the mechanical wear between the turbine 23 and the guide post 111, but also ensures the smooth operation of the turbine 23.

[0050] like Figure 4 As shown, in this embodiment, the turbine 23 has an abutting inclined surface 231, and the turbine 23 abuts against the outer peripheral wall 1111 of the guide post 111 through the abutting inclined surface 231, thereby achieving a line-to-surface contact between the guide post 111 and the turbine 23.

[0051] like Figure 2 As shown, in one embodiment, the motor mounting bracket 11 is partially sleeved on the body 211 of the motor 21, and the motor mounting bracket 11 and the body 211 are connected by a second threaded connector (not shown). That is, in this embodiment, the motor mounting bracket 11 is first assembled and positioned by sleeved connection with the body 211 of the motor 21, and then the second threaded connector is used to fix the motor mounting bracket 11 to the body 211, which facilitates the assembly between the motor mounting bracket 11 and the motor 21. Here, two second threaded connectors are configured, and the two second threaded connectors are staggered. It should be noted that the above-mentioned second threaded connectors are configured as screws, threaded rods, or bolts, and the specific configuration can be determined according to the application requirements, which will not be elaborated here.

[0052] like Figure 5 As shown, in this embodiment, the motor mounting base 11 is provided with a clearance groove 112, which is correspondingly provided with the second threaded connector, and the clearance groove 112 is used for the corresponding second threaded connector to pass through; a cover plate 123 is formed on the intermediate partition plate 12, which is correspondingly provided with the clearance groove 112, and the cover plate 123 can be inserted and cooperated with the corresponding clearance groove 112 to cover the corresponding clearance groove 112.

[0053] In one embodiment, the worm gear 22 is configured as a plastic part, allowing it to be integrally injection molded from plastic. This facilitates the production and manufacturing of the worm gear 22 and reduces its manufacturing cost. Here, the worm gear 22 is mounted on the shaft 212 of the motor 21.

[0054] like Figure 3 As shown, in one embodiment, each roller 32 has a needle roller 33 passing through it. The two ends of the needle roller 33 passing through the roller 32 are respectively tightly fitted with the roller support 31, thereby realizing the assembly of the roller 32 on the roller support 31.

[0055] 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.

[0056] 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: The housing assembly (10) includes a motor mounting base (11), a middle partition (12) and a top cover (13). The middle partition (12) is pressed and limited to the motor mounting base (11) by the top cover (13). A guide post (111) is formed on the motor mounting base (11), and a positioning protrusion (121) is formed on the middle partition (12). The drive assembly (20) includes a motor (21), a worm (22) and a turbine (23). The worm (22) is in drive engagement with the turbine (23) and the motor (21) respectively. One end of the turbine (23) is inserted into the guide post (111) and the other end of the turbine (23) is inserted into the positioning protrusion (121), thereby limiting the turbine (23) to the motor mounting base (11). The roller assembly (30) includes a roller support (31) and a plurality of rollers (32). One end of the roller support (31) passes through the intermediate partition (12) and engages with the keyway of the turbine (23). The plurality of rollers (32) are rotatably mounted on the roller support (31) for extruding pump tubes. The upper cover (13) is engaged and limited with the motor mounting base (11), and the upper cover (13) and the motor mounting base (11) are connected and fixed by a first threaded connector.

2. The peristaltic pump according to claim 1, characterized in that, The upper cover (13) and the motor mounting base (11) are connected by a snap-fit ​​component (14); The number of the snap-fit ​​components (14) is configured to be multiple, and the number of the first threaded connector is configured to be one.

3. The peristaltic pump according to claim 1 or 2, characterized in that, One of the motor mounting base (11) and the upper cover (13) has a protrusion (110), and the other has a snap-fit ​​plate (120), which can snap-fit ​​with the protrusion (110).

4. The peristaltic pump according to claim 1, characterized in that, An extension protrusion (131) is formed on the upper cover (13), and the extension protrusion (131) passes through the middle partition (12) and extends into the motor mounting base (11); The first threaded connector is inserted into the extension protrusion (131) and screwed into the extension protrusion (131) to fix the upper cover (13) to the motor mounting base (11).

5. The peristaltic pump according to claim 1, characterized in that, A positioning post (122) is also formed on the intermediate partition plate (12). The positioning post (122) can be inserted and engaged with the motor mounting base (11) to realize the assembly positioning between the intermediate partition plate (12) and the motor mounting base (11).

6. The peristaltic pump according to claim 1, characterized in that, The guide post (111) is in line-plane contact with the turbine (23).

7. The peristaltic pump according to claim 6, characterized in that, The turbine (23) has an abutting ramp (231), and the turbine (23) abuts against the outer peripheral wall (1111) of the guide post (111) through the abutting ramp (231).

8. The peristaltic pump according to claim 1, characterized in that, The worm gear (22) is made of plastic.

9. The peristaltic pump according to claim 1, characterized in that, The motor mounting bracket (11) is partially sleeved on the body (211) of the motor (21), and the motor mounting bracket (11) and the body (211) are connected by a second threaded connector.

10. The peristaltic pump according to claim 9, characterized in that, The motor mounting base (11) is provided with a clearance groove (112), the clearance groove (112) is correspondingly provided with the second threaded connector, and the clearance groove (112) is used for the corresponding second threaded connector to pass through; A cover plate (123) is formed on the intermediate partition plate (12). The cover plate (123) is correspondingly provided with the relief groove (112), and the cover plate (123) can be inserted and cooperated with the corresponding relief groove (112) to cover the corresponding relief groove (112).

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