CN223707789U

CN223707789U - Air pump assembly with one-way valve

Info

Publication number: CN223707789U
Application number: CN202520571655.8U
Authority: CN
Inventors: 张炎; 朱旭; 陈卫; 朱晓明
Original assignee: Suzhou Duffett Filtration Technology Co ltd
Current assignee: Suzhou Duffett Filtration Technology Co ltd
Priority date: 2025-03-28
Filing date: 2025-03-28
Publication date: 2025-12-23
Anticipated expiration: 2035-03-28

Abstract

The utility model provides an air pump assembly with a one-way valve, which comprises a shell, an air pump, the one-way valve and a valve cover, wherein the shell comprises a first cavity, a second cavity and a third cavity, the first cavity is communicated with the second cavity through a first pipeline, the third cavity is communicated with the second cavity through a second pipeline, one side of the first cavity, which is far away from the first pipeline, is provided with a first opening for assembling the air pump, the air pump is provided with an air outlet port, the air outlet port is in sealing connection with the first pipeline, so that the air discharged by the air pump can enter the first pipeline through the air outlet port, the one-way valve is arranged in the second cavity, so that the air discharged by the air pump can enter the third cavity through the one-way valve, the valve cover is fixedly connected with the shell, at least one part of the path of the first pipeline is surrounded by the shell and the valve cover together, the flow path of the air flow in the shell is limited by the shell and the valve cover, the pipeline connection between components is reduced, the assembly efficiency can be effectively improved, and the labor cost is reduced.

Description

Air pump assembly with one-way valve

Technical Field

The utility model relates to the technical field of vehicle detection, in particular to an air pump assembly with a one-way valve for leakage diagnosis in an evaporative emission system of a vehicle.

Background

With the increasing severity of automobile exhaust pollution, the restriction of the allowable atmospheric emission for vehicles in the issued automobile exhaust regulations is more stringent, so that it is necessary to detect the leakage of the evaporation emission system consisting of the oil tank and the whole evaporation pipeline during the use of the vehicle, and an oil tank leakage diagnosis module is generated in the process.

In the leakage diagnosis module adopted by the prior art center, the continuous work of the air pump is needed to build pressure for the system, meanwhile, the air channel switching is needed to be realized by matching with components such as an electromagnetic valve, a plurality of components are often needed to be installed, the pipeline is complex, the installation process is complex, and a large amount of labor cost is needed to be consumed.

Therefore, the prior art has the technical problems of complex pipelines and complicated installation process in the leakage diagnosis module.

Disclosure of utility model

The utility model mainly aims to provide an air pump assembly with a one-way valve, which solves the technical problems of complex pipelines and complicated installation process in the related technology.

In order to achieve the above object, according to one aspect of the present utility model, there is provided an air pump assembly with a check valve, the air pump assembly comprising:

the shell comprises a first chamber, a second chamber and a third chamber, wherein the first chamber is communicated with the second chamber through a first pipeline, and the third chamber is communicated with the second chamber through a second pipeline;

The air pump is provided with an air outlet port, and the air outlet port is in sealing connection with the first pipeline, so that the air exhausted by the air pump can enter the first pipeline through the air outlet port;

The check valve is arranged in the second cavity, so that gas discharged by the gas pump can enter the third cavity through the check valve;

The valve cover is fixedly connected with the shell, and at least a part of the path of the first pipeline is defined by the shell and the valve cover together.

The one-way valve comprises a valve seat, an umbrella-shaped valve and an elastic material, wherein the valve seat is fixedly connected with the second chamber in a sealing way, the valve seat is provided with a mounting hole positioned in the center of the valve seat and at least one ventilation hole positioned at the periphery of the mounting hole, the umbrella-shaped valve is fixedly connected with the valve seat through the mounting hole, at least one part of the umbrella-shaped valve is made of the elastic material, and the ventilation hole is covered by the elastic material.

Further, an elastic seal is provided between the valve seat and the second chamber.

Further, the umbrella-shaped valve comprises a valve rod and an umbrella-shaped sealing part, the valve rod is connected with the mounting hole, a positioning part is arranged on the valve rod, and the positioning part can be abutted to one side, close to the first chamber, of the valve seat.

Further, the umbrella-shaped sealing part is made of rubber, and the air holes can be sealed by the umbrella-shaped sealing part.

Further, a positioning groove is formed in the valve cover and can be abutted with the end portion of the valve rod.

Further, a plurality of positioning ribs extending towards the second chamber are arranged on the valve cover.

Further, a positioning step capable of being abutted against the valve seat is arranged on the inner wall of the second chamber.

Further, the air pump is a diaphragm pump.

Further, the elastic sealing element is an O-shaped ring.

The air pump assembly with the one-way valve provided by the utility model adopts an integrated shell structure and is fixedly connected with the shell through the valve cover, so that the flow path of air flow in the shell is limited through the shell and the valve cover, the pipeline connection between components is reduced, the assembly efficiency can be effectively improved, the labor cost is reduced, and the umbrella-shaped valve is arranged in the second cavity, thereby being beneficial to improving the sealing performance of products.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

Fig. 1 illustrates a schematic structural view of an air pump assembly with a check valve according to the present utility model;

fig. 2 shows a schematic structural view of a housing according to the utility model;

Fig. 3 shows a schematic structural view of a check valve according to the present utility model;

Fig. 4 shows a schematic structural view of a valve cover according to the present utility model.

Wherein the above figures include the following reference numerals:

10. The device comprises a shell, 11, a first chamber, 12, a second chamber, 121, a positioning step, 13, a third chamber, 14, a first pipeline, 15, a second pipeline, 20, an air pump, 30, a one-way valve, 31, a valve seat, 311, an air vent, 32, an umbrella-shaped valve, 33, an elastic sealing element, 40, a valve cover, 41, a positioning groove, 42 and a positioning rib.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

The utility model provides an air pump component with a one-way valve, which aims to solve the technical problems of complex pipelines and complicated installation process in the prior art.

As shown in fig. 1 to 4, the present utility model provides an air pump assembly with a check valve, comprising a housing 10, an air pump 20, a check valve 30 and a valve cover 40, wherein the housing 10 comprises a first chamber 11, a second chamber 12 and a third chamber 13, the first chamber 11 and the second chamber 12 are communicated through the first pipeline 14, the second chamber 12 and the third chamber 13 are communicated through the second pipeline 15, one side of the first chamber 11 away from the first pipeline 14 is provided with a first opening for assembling the air pump 20, the air pump 20 is provided with an air inlet port and an air outlet port, the air outlet port is in sealing connection with the first pipeline 14, external air enters the air pump 20 through the air inlet port, after the air pump 20 is internally pressurized, the air discharged from the air pump 20 can enter the first pipeline 14 through the air outlet port, the check valve 30 is arranged in the second chamber 12, so that high-pressure air discharged from the air pump 20 can enter the third chamber 13 through the check valve 30, simultaneously, the air flow efficiency is reduced by the first pipeline 30 cannot enter the first pipeline 14, and the air outlet port is fixedly connected with the housing 10 through the first pipeline 10, and the valve cover 40 is arranged in a common air flow path 10, and the cost is reduced, and the cost is effectively reduced, and the air flow efficiency is increased, and the air flow efficiency is reduced by the air flow is effectively and the air flow is increased by the air flow is discharged through the valve 10 and through the valve 10.

The valve cover 40 and the housing 10 may be fixed by, for example, laser welding, in which the check valve 30 is first installed and fixed in the second chamber 12, after the check valve 30 is assembled, the valve cover 40 and the housing 10 are welded and fixed to achieve sealing, and at least a portion of the air pump 20 enters the first chamber 11 through the first opening of the housing 10 and is fixed to the housing 10 by a screw.

Further, the check valve 30 comprises a valve seat 31 and an umbrella valve 32, wherein the valve seat 31 is fixedly connected with the second chamber 12 in a sealing way, the valve seat 31 is provided with a mounting hole positioned at the center of the valve seat 31 and at least one ventilation hole 311 positioned at the periphery of the mounting hole, when the number of the ventilation holes 311 is two or more, the ventilation holes 311 are uniformly distributed at the periphery of the mounting hole, the umbrella valve 32 is fixedly connected with the valve seat 31 through the mounting hole, at least one part of the umbrella valve 32 is processed by adopting an elastic material, the elastic material covers the ventilation holes 311, so that the ventilation holes 311 are sealed, when the pressure of the second chamber 12 is higher than the pressure of the third chamber 13, the pressure pushes the umbrella valve 32 covered on the ventilation holes 311 through the ventilation holes 311, so that the ventilation holes enter the third chamber 13 through gaps between the umbrella valve 32 and the valve seat 31, and when the pressure in the third chamber 13 is higher than the second chamber 12, the high pressure in the third chamber 13 acts on the surface of the umbrella valve 32, the umbrella valve 32 is pressed against the surface of the valve seat 31, so that the ventilation holes 311 cannot flow from the third chamber 13 to the third chamber 13.

In order to improve the air tightness between the check valve 30 and the housing 10, an elastic sealing member 33 is disposed between the valve seat 31 and the second chamber 12, and an installation groove for installing the elastic sealing member 33 is disposed on the outer circumference of the valve seat 31, so that the installation and positioning of the elastic sealing member 33 are facilitated through the installation groove, and preferably, the elastic sealing member 33 may be an O-ring, for example.

As shown in fig. 3, the umbrella valve 32 comprises a valve rod and an umbrella seal part, wherein the valve rod and the umbrella seal part are integrally formed, the valve rod is connected with a mounting hole, the outer diameter of the valve rod gradually decreases from one end connected with the umbrella seal part to one end far away from the umbrella seal part, a positioning part is arranged on the valve rod, and the positioning part can be abutted against one side, close to the first chamber 11, of the valve seat 31, so that the valve rod and the valve seat 31 are assembled and fixed in a manner favorable for assembling.

Wherein, the umbrella-shaped sealing part is made of rubber material, and can cover the ventilation holes 311, thereby realizing unidirectional sealing of the ventilation holes 311.

Further, as shown in fig. 4, a positioning groove 41 is provided on the valve cover 40, the positioning groove 41 can be abutted against the end of the valve rod, so as to facilitate positioning of the check valve 30, and a plurality of positioning ribs 42 extending towards the second chamber 12 are further provided on the valve cover 40, so that positioning between the valve cover 40 and the second chamber 12 can be realized through the positioning ribs 42, and assembly and fixation in the installation process are facilitated.

In another embodiment of the present application, the inner wall of the second chamber 12 is further provided with a positioning step 121 capable of abutting against the valve seat 31, and when the valve seat 31 is assembled with the second chamber 12, the end of the valve seat 31 abuts against the end face of the positioning step 121, so that the axial positioning of the valve seat 31 is realized, and by adopting the arrangement mode, the valve seat 31 can be effectively prevented from moving in the second chamber 12, and the stability of the product in the use process is improved.

Further, the air pump 20 may be, for example, a diaphragm pump.

The air pump assembly with the one-way valve provided by the application adopts an integrated shell 10 structure and is fixedly connected with the shell 10 through the valve cover 40, so that the flow path of air flow in the shell 10 is limited through the shell 10 and the valve cover 40, the pipeline connection between components is reduced, the assembly efficiency can be effectively improved, the labor cost is reduced, and the umbrella-shaped valve 32 is arranged in the second chamber 12, thereby being beneficial to improving the sealing performance of products.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of the present utility model, and the azimuth terms "inside and outside" refer to inside and outside with respect to the outline of each component itself.

Spatially relative terms, such as "above," "upper" and "upper surface," "above" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the process is carried out, the exemplary term "above" may be included. Upper and lower. Two orientations below. The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An air pump assembly with a one-way valve, the air pump assembly comprising:

The device comprises a shell, wherein a first chamber, a second chamber and a third chamber are formed in the shell, the first chamber is communicated with the second chamber through a first pipeline, and the third chamber is communicated with the second chamber through a second pipeline;

2. The air pump assembly with one-way valve of claim 1, wherein the one-way valve comprises:

The valve seat is fixedly connected with the second chamber in a sealing way, and is provided with a mounting hole positioned in the center of the valve seat and at least one ventilation hole positioned at the periphery of the mounting hole;

The umbrella-shaped valve is fixedly connected with the valve seat through the mounting hole, at least one part of the umbrella-shaped valve is made of elastic materials, and the air holes are covered by the elastic materials.

3. An air pump assembly with a one-way valve according to claim 2, wherein an elastic seal is provided between the valve seat and the second chamber.

4. The air pump assembly with the check valve according to claim 2, wherein the umbrella valve includes a valve stem and an umbrella-shaped sealing portion, the valve stem is connected with the mounting hole, a positioning portion is provided on the valve stem, and the positioning portion can abut against a side of the valve seat, which is close to the first chamber.

5. The air pump assembly with check valve according to claim 4, wherein the umbrella-shaped sealing part is made of rubber material, and the umbrella-shaped sealing part can seal the air holes.

6. The air pump assembly with a check valve according to claim 4, wherein a positioning groove is provided on the valve cover, and the positioning groove can be abutted with an end portion of the valve rod.

7. The air pump assembly with one-way valve according to claim 1, wherein a plurality of positioning ribs extending toward the second chamber are provided on the valve cover.

8. The air pump assembly with the check valve according to claim 1, wherein a positioning step capable of abutting against the valve seat is provided on an inner wall of the second chamber.

9. The air pump assembly with one-way valve of claim 1, wherein the air pump is a diaphragm pump.

10. An air pump assembly with a one-way valve as in claim 3, wherein the resilient seal is an O-ring.