Peristaltic pump

Abstract

The utility model relates to a peristaltic pump which comprises a pump shell, a motor, a hose and a peristaltic assembly, a peristaltic space is formed in the pump shell, a connecting hole is formed in the pump shell, the output end of an output shaft of the motor extends into the peristaltic space through the connecting hole, and the output end is connected with a driving gear; the wriggling assembly comprises a first connecting plate and a plurality of rolling wheels, a plurality of inserting columns are connected to the first connecting plate, an avoiding hole is formed in the first connecting plate, and the inserting columns are evenly arranged around the avoiding hole in the circumferential direction of the avoiding hole; an output shaft of the motor penetrates through the receding hole, the roller comprises gears and pin rollers which are connected with each other, and the driving gear is meshed with the multiple gears; a first liquid opening and a second liquid opening are formed in the side wall of the pump shell, the hose is arranged in the wriggling space, one end of the hose extends out of the first liquid opening, and the other end of the hose extends out of the second liquid opening. The motor directly drives all the rollers to rotate through the driving gear, so that the rollers can actively rotate, and the phenomenon that the rollers slip is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of peristaltic pumps, and in particular relates to a peristaltic pump. Background Art

[0002] When the existing peristaltic pump is working, the motor directly drives the peristaltic component to rotate, and the roller on the peristaltic component presses the hose, and the roller rotates passively. Since the roller rotates passively, the roller will slip after being used for a period of time, making it impossible to effectively and quantitatively pump out the liquid. Utility Model Content

[0003] In view of this, the utility model provides a peristaltic pump, in which the motor directly drives each roller to rotate through a driving gear, so that the roller can actively rotate to avoid the roller slipping, thereby effectively and quantitatively pumping out the liquid.

[0004] The technical solution adopted by the utility model is:

[0005] A peristaltic pump comprises a pump housing, a motor, a hose and a peristaltic assembly, wherein a peristaltic space is formed in the pump housing, a connecting hole is provided on the pump housing, an output end of an output shaft of the motor extends into the peristaltic space through the connecting hole, and a driving gear is connected to the output end;

[0006] The peristaltic assembly includes a first connecting plate and a plurality of rollers, the first connecting plate is connected with a plurality of plug posts, the number of the plug posts is equal to the number of the rollers, the first connecting plate is provided with an avoidance hole, in the circumferential direction of the avoidance hole, the plurality of plug posts are evenly arranged around the avoidance hole, and the rollers are plugged into the plug posts one by one; the output shaft of the motor passes through the avoidance hole, the rollers include gears and rollers connected to each other, wherein the gears are closer to the first connecting plate than the rollers, the driving gear is located between the plurality of gears, and is meshed with the plurality of gears at the same time;

[0007] A first liquid port and a second liquid port are provided on the side wall of the pump housing, and the hose is arranged in the peristaltic space, with one end of the hose extending from the first liquid port and the other end of the hose extending from the second liquid port; in the peristaltic space, the hose is wrapped around the outer circumference of the peristaltic component, the radial inner side of the hose contacts the roller, and the radial outer side of the hose contacts the inner wall of the side wall, and the roller and the side wall squeeze the hose in the radial direction.

[0008] Preferably, the peristaltic assembly also includes a second connecting plate. In the axial direction of the plug, the first connecting plate and the second connecting plate are spaced apart from each other. The second connecting plate is provided with a plurality of sockets, the number of which is equal to and corresponds one to one to the number of the plugs, and the free end of the plug is inserted into the corresponding socket.

[0009] Preferably, the number of the rollers is three, and in the circumferential direction, two adjacent rollers are arranged at intervals.

[0010] Preferably, the pump housing comprises a housing and a housing cover, the housing has an opening, the housing cover closes the opening, and the connecting hole is provided on the bottom wall of the housing.

[0011] Preferably, a mounting groove is provided on a side of the shell cover facing the bottom wall, a bearing is connected to the center of the second connecting plate, and the bearing is plug-fitted into the mounting groove.

[0012] Preferably, an auxiliary hole is further provided on the bottom wall, and the pump housing is fixedly connected to the motor via screws, and the screws pass through the auxiliary hole to be connected to the motor.

[0013] Preferably, a positioning groove is further provided on the bottom wall, the positioning groove is located at the connecting hole, a circular positioning column is further provided on the first connecting plate, the avoidance hole is located at the center of the positioning column, and the positioning column is plugged into the positioning groove.

[0014] Beneficial effects of the utility model:

[0015] When the peristaltic pump of the utility model is working, the output shaft of the motor rotates, and a driving gear is connected to the output end of the output shaft, so that the driving gear rotates, and the roller is provided with a gear, which meshes with the driving gear, so that each roller rotates, so that the roller actively rotates, and the roller is prevented from slipping. When the roller rotates, the roller presses the hose along the circumferential direction, so that the entire peristaltic assembly rotates, thereby effectively and quantitatively pumping out the liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other purposes, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0017] Figure 1 It is a schematic diagram of the structure of a peristaltic pump;

[0018] Figure 2 This is an exploded view of a peristaltic pump;

[0019] Figure 3 It is a schematic diagram of the structure of the peristaltic component;

[0020] Figure 4It is an exploded view of the creeping component;

[0021] Figure 5 It is a structural diagram of the housing and the motor.

[0022] In the figure: 1. Motor; 2. Pump housing; 3. Hose; 4. Peristaltic assembly;

[0023] 11. Driving gear;

[0024] 21. Shell; 22. Shell cover; 23. First liquid port; 24. Second liquid port; 25. Connecting hole; 26. Positioning groove; 27. Auxiliary hole;

[0025] 41. first connecting plate; 42. second connecting plate; 43. roller;

[0026] 411, avoidance hole; 412, plug column;

[0027] 421. Bearing; 431. Roller; 432. Gear. DETAILED DESCRIPTION

[0028] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail. In order to avoid confusing the essence of the present invention, known methods, processes, procedures, and components are not described in detail.

[0029] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0030] Unless the context clearly requires otherwise, throughout the specification and claims, the words "include", "comprising" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive sense; that is, in the sense of "including but not limited to".

[0031] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0032] See also Figure 1-Figure 5 The utility model provides a peristaltic pump, including a pump housing 2, a motor 1, a hose 3 and a peristaltic assembly 4. A peristaltic space is formed in the pump housing 2. A connecting hole 25 is provided on the pump housing 2. The output end of the output shaft of the motor 1 extends into the peristaltic space through the connecting hole 25. A driving gear 11 is connected to the output end.

[0033] The peristaltic component 4 includes a first connecting plate 41 and a plurality of rollers 43, the first connecting plate 41 is connected to a plurality of plug posts 412, the number of the plug posts 412 is equal to the number of the rollers 43, the first connecting plate 41 is provided with an avoidance hole 411, and in the circumferential direction of the avoidance hole 411, the plurality of plug posts 412 are evenly arranged around the avoidance hole 411, and the rollers 43 are plugged into the plug posts 412 one by one; the output shaft of the motor 1 passes through the avoidance hole 411, and the roller 43 includes a gear 432 and a roller 431 connected to each other, wherein the gear 432 is closer to the first connecting plate 41 than the roller 431, and the driving gear 11 is located between the plurality of gears 432 and meshes with the plurality of gears 432 at the same time.

[0034] A first liquid port 23 and a second liquid port 24 are provided on the side wall of the pump housing 2, and the hose 3 is arranged in the peristaltic space, one end of the hose 3 extends from the first liquid port 23, and the other end of the hose 3 extends from the second liquid port 24; in the peristaltic space, the hose 3 surrounds the outer circumference of the peristaltic component 4, the radial inner side of the hose 3 contacts the roller 431, and the radial outer side of the hose 3 contacts the inner wall of the side wall, and the roller 431 and the side wall squeeze the hose 3 in the radial direction.

[0035] A driving gear 11 is connected to the output end of the output shaft of the motor 1, so the motor 1 will directly drive the driving gear 11 to rotate when it rotates. The driving gear 11 is located in the peristaltic space and cooperates with the peristaltic component 4. In the peristaltic component 4, multiple rollers 43 are installed on multiple plugs 412, and the relative positions of the multiple plugs 412 are fixed, so that the relative positions of the multiple rollers 43 are fixed, and each roller 43 can rotate freely. The roller 43 includes a gear 432 and a roller 431 that are connected to each other. The gear 432 of each roller 43 is meshed with the driving gear 11, so the driving gear 11 can drive each gear 432 to rotate at the same time, thereby rotating each roller 43. Since the hose 3 is wrapped around the outside of the peristaltic component 4 and contacts the roller 431, the position of the hose 3 remains basically unchanged, and the roller 43 will roll relative to the hose 3, thereby rotating the entire peristaltic component 4, thereby pumping out the liquid quantitatively and effectively.

[0036] Since the driving gear 11 is meshed with all the gears 432 , each roller 43 is actively rotated, thereby preventing the roller 43 from slipping.

[0037] The peristaltic component 4 also includes a second connecting plate 42. In the axial direction of the plug column 412, the first connecting plate 41 and the second connecting plate 42 are spaced apart. The second connecting plate 42 is provided with a plurality of sockets, the number of which is equal to and one-to-one corresponding to the number of the plug columns 412. The free ends of the plug columns 412 are inserted into the corresponding sockets.

[0038] The second connecting plate 42 is provided so that the roller 43 is protected by the two connecting plates in the axial direction, and the entire peristaltic component 4 forms a whole, thereby improving the stability of the peristaltic component 4 when rotating.

[0039] The number of the rollers 43 is three, and in the circumferential direction, two adjacent rollers 43 are arranged at intervals. Of course, in other embodiments, the number of the rollers 43 may be two or four. The two adjacent rollers 43 are arranged at intervals so that the gears 432 and the gears 432 do not directly mesh with each other, ensuring that the two rollers 43 can squeeze the liquid in the hose 3.

[0040] The pump housing 2 includes a housing 21 and a housing cover 22. The housing 21 has an opening, the housing cover 22 closes the opening, and the bottom wall of the housing 21 is provided with the connecting hole 25. The specific structure of the pump housing 2 allows the peristaltic assembly 4 to be arranged in the peristaltic space through the opening when the peristaltic pump is assembled, and then the opening is covered by the housing cover 22, so as to facilitate the assembly and subsequent maintenance of the peristaltic pump.

[0041] The housing cover 22 is provided with a mounting groove on one side facing the bottom wall, and a bearing 421 is connected to the center of the second connecting plate 42, and the bearing 421 is inserted and matched with the mounting groove. When the peristaltic component 4 rotates, the bearing 421 cooperates with the mounting groove to improve the stability of the peristaltic component 4 during rotation.

[0042] The bottom wall is also provided with an auxiliary hole 27, and the pump housing 2 is fixedly connected to the motor 1 by screws, and the screws pass through the auxiliary hole 27 and are connected to the motor 1, specifically, are connected and fixed to the housing of the motor 1. Ensure that the pump housing 2 is fixed relative to the housing of the motor 1.

[0043] The bottom wall is also provided with a positioning groove 26, the positioning groove 26 is located at the connection hole 25, the first connection plate 41 is also provided with a circular positioning column, the avoidance hole 411 is located at the center of the positioning column, and the positioning column is plugged into the positioning groove 26. The positioning groove 26 can radially position the positioning column to improve the stability of the peristaltic component 4 when rotating.

[0044] It should be understood that the above-mentioned embodiments are merely illustrative and not restrictive. Without departing from the basic principles of the present invention, various obvious or equivalent modifications or substitutions that can be made by technicians in this field to the above details will be included in the scope of the claims of the present invention.

Claims

1. A peristaltic pump, characterized in that: It comprises a pump housing, a motor, a hose and a peristaltic assembly, wherein a peristaltic space is formed in the pump housing, a connecting hole is provided on the pump housing, an output end of an output shaft of the motor extends into the peristaltic space through the connecting hole, and a driving gear is connected to the output end; The peristaltic assembly includes a first connecting plate and a plurality of rollers, the first connecting plate is connected with a plurality of plug posts, the number of the plug posts is equal to the number of the rollers, the first connecting plate is provided with an avoidance hole, in the circumferential direction of the avoidance hole, the plurality of plug posts are evenly arranged around the avoidance hole, and the rollers are plugged into the plug posts one by one; the output shaft of the motor passes through the avoidance hole, the rollers include gears and rollers connected to each other, wherein the gears are closer to the first connecting plate than the rollers, the driving gear is located between the plurality of gears, and is meshed with the plurality of gears at the same time; A first liquid port and a second liquid port are provided on the side wall of the pump housing, and the hose is arranged in the peristaltic space, with one end of the hose extending from the first liquid port and the other end of the hose extending from the second liquid port; in the peristaltic space, the hose is wrapped around the outer circumference of the peristaltic component, the radial inner side of the hose contacts the roller, and the radial outer side of the hose contacts the inner wall of the side wall, and the roller and the side wall squeeze the hose in the radial direction.

2. The peristaltic pump according to claim 1, characterized in that: The peristaltic assembly also includes a second connecting plate. In the axial direction of the plug column, the first connecting plate and the second connecting plate are spaced apart. The second connecting plate is provided with a plurality of sockets, the number of which is equal to and corresponds to the number of the plug columns. The free ends of the plug columns are inserted into the corresponding sockets.

3. The peristaltic pump according to claim 2, characterized in that: The number of the rollers is three, and in the circumferential direction, two adjacent rollers are arranged at intervals.

4. The peristaltic pump according to claim 2, characterized in that: The pump housing comprises a housing and a housing cover. The housing is provided with an opening, the housing cover closes the opening, and the connecting hole is provided on the bottom wall of the housing.

5. The peristaltic pump according to claim 4, characterized in that: A mounting groove is provided on one side of the shell cover facing the bottom wall, a bearing is connected to the center of the second connecting plate, and the bearing is inserted and matched with the mounting groove.

6. The peristaltic pump according to claim 4, characterized in that: The bottom wall is also provided with an auxiliary hole, and the pump housing is fixedly connected to the motor via screws, and the screws pass through the auxiliary hole to be connected to the motor.

7. The peristaltic pump according to claim 4, characterized in that: The bottom wall is also provided with a positioning groove, the positioning groove is located at the connecting hole, the first connecting plate is also provided with a circular positioning column, the avoidance hole is located at the center of the positioning column, and the positioning column is plugged into the positioning groove.

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