CN212177372U

CN212177372U - Peristaltic pump

Info

Publication number: CN212177372U
Application number: CN201922169568.7U
Authority: CN
Inventors: 刘术; 刘坤
Original assignee: Wilt Guangzhou Fluid Equipment Co ltd
Current assignee: Wilt Guangzhou Fluid Equipment Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-12-18
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses a peristaltic pump, which comprises an outer shell, an eccentric wheel and an inner shell, wherein an inner cavity is formed inside the outer shell, a suction inlet and a discharge outlet are arranged on the outer shell, the suction inlet and the discharge outlet are both communicated with the inner cavity, the eccentric wheel is arranged in the inner cavity, and the inner shell is sleeved on the eccentric wheel; when the eccentric wheel is static, the inner shell can enable the inner cavity to form a vacuum area, and then fluid enters the vacuum area from the suction inlet; when the eccentric wheel is eccentrically rotated by external force, the eccentric wheel drives the inner shell to extrude the inner wall of the outer shell, and the inner shell deforms, so that fluid sequentially passes through the suction inlet, the vacuum area and the discharge outlet. The utility model discloses need not to use the pump line, so can not lead to the velocity of flow to be influenced because of pump line wearing and tearing for this peristaltic pump work efficiency is higher.

Description

Peristaltic pump

Technical Field

The utility model relates to a peristaltic pump technique especially relates to a peristaltic pump.

Background

The existing peristaltic pump needs to replace the pump pipe regularly (the domestic pump pipe is 200 hours, the imported pump pipe is 2000 hours), because the existing peristaltic pump is internally provided with the rotating wheel, and the pump pipe is gradually lost elasticity and loses efficacy after being rolled and rubbed for a long time; for this reason, the parameters of the existing peristaltic pump are greatly different from those of the existing peristaltic pump in the early stage of use and the later stage (the stage of wearing the pump pipe before the pump pipe is replaced); and because the inner pump pipe is a hose, the establishment of the suction stroke depends on the elasticity of the pump pipe, and further has great influence on the rebound quantity and the rebound speed of the pump pipe, so the size of the suction stroke has great influence on the flow speed of the peristaltic pump, and the working efficiency of the existing peristaltic pump is reduced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a peristaltic pump need not to use a pump pipe, so can not lead to the velocity of flow to be influenced because of pump pipe wearing and tearing for this peristaltic pump work efficiency is higher.

The purpose of the utility model is realized by adopting the following technical scheme:

a peristaltic pump comprises an outer shell, an eccentric wheel and an inner shell, wherein an inner cavity is formed in the outer shell, a suction inlet and a discharge outlet are formed in the outer shell, the suction inlet and the discharge outlet are communicated with the inner cavity, the eccentric wheel is arranged in the inner cavity, and the inner shell is sleeved on the eccentric wheel;

when the eccentric wheel is static, the inner shell can enable an inner cavity to form a vacuum area, and then fluid enters the vacuum area from the suction inlet; when the eccentric wheel is eccentrically rotated by external force, the eccentric wheel drives the inner shell to extrude the inner wall of the outer shell, and the inner shell deforms, so that fluid sequentially passes through the suction inlet, the vacuum area and the discharge outlet.

Further, the peristaltic pump also comprises a motor, and an output shaft of the motor extends into the inner cavity and is connected with the eccentric wheel for providing power for the rotation of the eccentric wheel.

Further, the peristaltic pump also comprises a fixing assembly, and the inner shell is fixed on the outer shell through the fixing assembly.

Furthermore, the fixing assembly comprises a cover body and a fixing bolt, the shell is of a structure with openings at two ends, the cover body is locked on the opening at one end of the shell through the fixing bolt, and the output shaft of the motor enters the inner cavity through the opening at the other end of the shell.

Further, be equipped with cooperation portion on the inner shell, the installation breach has been seted up on the shell, installation breach and inner chamber intercommunication, cooperation portion and installation breach joint.

Further, the fitting portion is provided in a circumferential direction of the inner case.

Furthermore, the inner shell is made of soft rubber.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the peristaltic pump does not need to be provided with a pump pipe, the inner shell and the eccentric wheel are arranged in the outer shell, and the inner shell and the outer shell do not have internal friction, so that the service life of the peristaltic pump is prolonged by times, the pump pipe does not need to be replaced like the conventional peristaltic pump, and the cost can be saved; similarly, the problem of great difference between the parameters in the early stage and the parameters in the later stage of use does not exist; the size of the suction stroke of the peristaltic pump actively works by means of the output force of the motor, and compared with the existing peristaltic pump which works by means of the elasticity of a pump pipe, the size of the suction stroke has little influence on the flow rate of the pump, so that the working efficiency of the peristaltic pump is higher.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the exploded structure of the present invention;

FIG. 3 is a schematic structural view of the motor, the inner shell and the eccentric wheel after being assembled;

fig. 4 is a schematic structural view of the assembled inner shell and eccentric wheel of the present invention;

in the figure: 1. a motor; 2. an output shaft; 3. a port; 4. a housing; 5. a cover body; 6. fixing the bolt; 7. an inner shell; 8. an eccentric wheel; 9. a fitting portion; 10. a peristaltic pump.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

A peristaltic pump 10 as shown in fig. 1-4, includes an outer casing 4, an eccentric wheel 8 and an inner casing 7, wherein an inner cavity is formed inside the outer casing 4, the outer casing 4 is provided with two ports 3, specifically, the two ports 3 are a suction port and a discharge port respectively, the suction port and the discharge port are both communicated with the inner cavity, the eccentric wheel 8 is arranged in the inner cavity, the inner casing 7 is sleeved on the eccentric wheel 8, that is, the inner casing 7 is wrapped inside the outer casing 4, and the eccentric wheel 8 is wrapped inside the inner casing 7;

when the eccentric wheel 8 is static, the inner shell 7 can enable the inner cavity to form a vacuum area, and further enable fluid to enter the vacuum area from the suction port; when the eccentric wheel 8 is eccentrically rotated by external force, the eccentric wheel 8 drives the inner shell 7 to extrude the inner wall of the outer shell 4, and the inner shell 7 deforms, so that fluid sequentially passes through the suction inlet, the vacuum area and the discharge outlet.

Further, the peristaltic pump 10 further comprises a motor 1, and an output shaft 2 of the motor 1 extends into the inner cavity and is connected with the eccentric wheel 8 for providing power for rotating the eccentric wheel 8.

In particular, peristaltic pump 10 also comprises a fixing assembly by which inner shell 7 is fixed to outer shell 4.

It should be noted that the fixing assembly includes a cover 5 and a fixing bolt 6, the housing 4 is a structure with two open ends, the cover 5 is locked on an opening at one end of the housing 4 through the fixing bolt 6, and the output shaft 2 of the motor 1 enters the inner cavity through an opening at the other end of the housing 4. With the above arrangement, the inner case 7 can be fixed in the inner cavity by the fixing member.

It is worth mentioning that, be equipped with cooperation portion 9 on the inner shell 7, seted up the installation breach on the shell 4, installation breach and inner chamber intercommunication, cooperation portion 9 and installation breach joint to make inner shell 7 be formed with the vacuum area in can making the inner chamber when there is not deformation state.

Preferably, the fitting portion 9 is provided in the circumferential direction of the inner housing 7.

In a more preferred embodiment, the inner shell 7 is made of a soft rubber, which is beneficial to making the inner shell 7 have better deformation performance.

When the peristaltic pump is used, the motor 1 drives the eccentric wheel 8 to eccentrically rotate through the output shaft 2 of the motor, the eccentric wheel 8 drives the inner shell 7 to extrude the inner wall of the outer shell 4, and it can be understood that the inner shell 7 and the inner wall of the outer shell 4 are relatively static and do not generate mutual friction, and the service life of the peristaltic pump 10 is greatly prolonged due to the fact that no internal friction exists. The inner shell 7 presses against the inner wall of the outer shell 4 to form a seal at the contact point between them, the seal is moved as the output shaft 2 rotates, when the inner shell 7 returns to its original shape, a partial vacuum is formed in the inner cavity, the fluid pumped from the suction inlet fills the vacuum area, the peristaltic pump 10 is operated, and the eccentric rotation of the eccentric wheel 8 drives the inner shell 7 to press against the outer wall of the outer shell 4, so that the fluid in the vacuum area can be output from the discharge outlet.

Of course, if the motor 1 is rotated in the reverse direction, the original suction port will be turned into the discharge port in reverse, and the original discharge port will be turned into the suction port.

Compared with the prior art, the peristaltic pump 10 does not need to be provided with a pump pipe, the inner shell 7 and the eccentric wheel 8 are arranged in the outer shell 4, and the inner shell 7 and the outer shell 4 do not have internal friction, so that the service life of the peristaltic pump is prolonged in multiples, the pump pipe does not need to be replaced like the conventional peristaltic pump 10, and the cost can be saved; similarly, the problem of great difference between the parameters in the early stage and the parameters in the later stage of use does not exist; the size of the suction stroke of the peristaltic pump 10 depends on the output force of the motor 1 to actively work, and compared with the existing peristaltic pump 10 which depends on the elastic work of a pump pipe, the size of the suction stroke has little influence on the flow rate of the pump, so that the working efficiency of the peristaltic pump 10 is higher.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A peristaltic pump, characterized by: the eccentric wheel is arranged in the inner cavity, and the inner shell is sleeved on the eccentric wheel;

2. A peristaltic pump as set forth in claim 1, wherein: the peristaltic pump further comprises a motor, and an output shaft of the motor extends into the inner cavity and is connected with the eccentric wheel and used for providing power for the rotation of the eccentric wheel.

3. A peristaltic pump as set forth in claim 2, wherein: the peristaltic pump further comprises a fixing assembly, and the inner shell is fixed on the outer shell through the fixing assembly.

4. A peristaltic pump as set forth in claim 3, wherein: the fixing assembly comprises a cover body and a fixing bolt, the shell is of a structure with two open ends, the cover body is locked on an opening at one end of the shell through the fixing bolt, and an output shaft of the motor enters the inner cavity through an opening at the other end of the shell.

5. A peristaltic pump as set forth in claim 1, wherein: the inner shell is provided with a matching part, the outer shell is provided with an installation notch, the installation notch is communicated with the inner cavity, and the matching part is connected with the installation notch in a clamping manner.

6. A peristaltic pump as claimed in claim 5, wherein: the matching part is arranged on the circumferential direction of the inner shell.

7. A peristaltic pump as claimed in any one of claims 1 to 6, wherein: the inner shell is made of soft rubber.