CN213361211U

CN213361211U - Multifunctional vacuum one-way valve

Info

Publication number: CN213361211U
Application number: CN202022130563.6U
Authority: CN
Inventors: 朱雁; 梁浩贵; 甘乐
Original assignee: Mooxee Precision Industry Co
Current assignee: Mooxee Precision Industry Co
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-06-04
Anticipated expiration: 2030-09-25

Abstract

The utility model discloses a multi-functional vacuum check valve relates to vacuum check valve technical field, which comprises a valve body, upper end cover and lower end cover are installed respectively to the both sides of valve body, and the inboard of upper end cover and lower end cover has cup jointed upper end cover sealing washer and lower end cover sealing washer respectively, first piston is installed to the inboard of valve body, and has cup jointed first piston seal circle in the outside of first piston, the inboard of first piston is connected with first spring, and the connecting rod has been placed to the inboard of first spring, the second piston is installed in the outside of connecting rod, and has cup jointed second piston seal circle below the outside of second piston. The utility model discloses in, through the structural feature of this vacuum check valve self, the user can realize opening or closing vacuum check valve according to letting in the inside air pressure condition of vacuum check valve, and then can play evacuation, vacuum maintenance and broken vacuum function to can effectual expansion vacuum check valve's working range.

Description

Multifunctional vacuum one-way valve

Technical Field

The utility model relates to a vacuum check valve technical field especially relates to a multi-functional vacuum check valve.

Background

The vacuum one-way valve is an important safety component of an automobile vacuum braking system, and has the main function of accumulating higher vacuum generated by an automobile vacuum source (an automobile engine or a vacuum pump) in a vacuum resistor in a one-way mode, so that enough vacuum degree is ensured to be stored in a vacuum booster, the automobile has enough vacuum servo force under various working conditions, and the quality of the product is not only related to the running safety of the automobile, but also is a key component for ensuring the normal work of the braking system.

The existing multifunctional vacuum one-way valve does not have the functions of vacuumizing, vacuum maintaining and vacuum breaking, so that the working range of the vacuum one-way valve is restricted to a certain extent, and meanwhile, the multifunctional vacuum one-way valve does not have installation work suitable for various different occasions, so that the use condition of the vacuum one-way valve is correspondingly limited.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving current multi-functional vacuum check valve and not possessing evacuation, vacuum and keep and broken vacuum function, and then the working range that leads to vacuum check valve has received restriction to a certain extent, simultaneously, does not possess the installation work who adapts to multiple different occasions, and then the service condition that leads to vacuum check valve has received the shortcoming of corresponding restriction, and the multi-functional vacuum check valve that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a multi-functional vacuum check valve, includes the valve body, upper end cover and lower end cover are installed respectively to the both sides of valve body, and the inboard of upper end cover and lower end cover has cup jointed upper end cover sealing washer and lower end cover sealing washer respectively, first piston is installed to the inboard of valve body, and has cup jointed first piston sealing washer in the outside of first piston, the inboard of first piston is connected with first spring, and has placed the connecting rod in the inboard of first spring, the second piston is installed in the outside of connecting rod, and has cup jointed second piston sealing washer below the outside of second piston, the second spring is installed to the outside top of second piston.

Preferably, the shape and size of the upper end cover are matched with those of the lower end cover, and the inner sides of the upper end cover and the lower end cover are both communicated with the inner side of the valve body.

Preferably, the central axis of the second piston coincides with the central axis of the valve body, and the second piston is elastically connected with the valve body through a second spring.

Preferably, the valve body is of a circular tube structure, and the inner side of the valve body is tightly attached to the outer side of the first piston and the outer side of the second piston.

Preferably, the connecting rod is linearly distributed on the inner sides of the first piston and the second piston in a penetrating manner, and the first piston is fixedly connected with the connecting rod.

Preferably, the connecting rod and the first piston are distributed in a vertical state, and the first piston and the valve body form a telescopic structure through a first spring.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, through the structural feature of this vacuum check valve self, the user can realize opening or closing vacuum check valve according to letting in the inside air pressure condition of vacuum check valve, and then can play evacuation, vacuum maintenance and broken vacuum function to can effectual expansion vacuum check valve's working range.

2. The utility model discloses in, this vacuum check valve is the round tube structure to can be adapted to the limited occasion in space such as pipeline, and then the working range that this vacuum check valve of increase that can step forward used, simultaneously, the material that the sealing washer that uses adopts is the fluororubber material, has high temperature resistance characteristics, therefore also can be applicable to the work under the high temperature occasion.

3. The utility model discloses in, this vacuum check valve adopts opening of air current control check valve to open and stop, need not to connect the electricity in the operation process, and is simple swift, and the security performance is also higher to security when can effectual increase construction operation, and then can effectually prevent the emergence of incident.

Drawings

FIG. 1 is a schematic view of a front three-dimensional structure of a valve body of the present invention;

fig. 2 is the schematic view of the internal sectional structure of the middle valve body of the present invention.

Illustration of the drawings:

1. a valve body; 2. an upper end cover; 3. a lower end cover; 4. a lower end cover sealing ring; 5. a first piston; 6. a first piston seal ring; 7. a first spring; 8. a connecting rod; 9. a second piston; 10. a second piston seal ring; 11. a second spring; 12. the upper end cover is provided with a sealing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, a multifunctional vacuum check valve comprises a valve body 1, an upper end cover 2, a lower end cover 3, a lower end cover seal ring 4, a first piston 5, a first piston seal ring 6, a first spring 7, a connecting rod 8, a second piston 9, a second piston seal ring 10, a second spring 11 and an upper end cover seal ring 12, wherein the upper end cover 2 and the lower end cover 3 are respectively installed on two sides of the valve body 1, the upper end cover seal ring 12 and the lower end cover seal ring 4 are respectively sleeved on the inner sides of the upper end cover 2 and the lower end cover 3, the first piston 5 is installed on the inner side of the valve body 1, the first piston seal ring 6 is sleeved on the outer side of the first piston 5, the first spring 7 is connected on the inner side of the first piston 5, the connecting rod 8 is placed on the inner side of the first spring 7, the second piston 9 is installed on the outer side of the connecting rod 8, and the second piston seal, a second spring 11 is mounted on the outside and above the second piston 9.

As shown in fig. 1 and 2, the upper cap 2 and the lower cap 3 are identical in shape and size, and the inner sides of the upper cap 2 and the lower cap 3 are both communicated with the inner side of the valve body 1, so that the vacuum airflow can flow inside the upper cap 2 and the lower cap 3 conveniently.

As shown in fig. 2, the central axis of the second piston 9 coincides with the central axis of the valve body 1, and the second piston 9 forms an elastic connection with the valve body 1 through the second spring 11, so that the second piston 9 can move correspondingly under the action of the second spring 11 through the elastic connection.

As shown in fig. 1 and 2, the valve body 1 is of a circular tube structure, and the inner side of the valve body 1 is closely attached to the outer side of the first piston 5 and the outer side of the second piston 9, so that the first piston 5 and the second piston 9 can perform corresponding movement work inside the valve body 1 when vacuum airflow is introduced into the valve body 1.

As shown in fig. 2, the connecting rod 8 is linearly distributed inside the first piston 5 and the second piston 9, and the first piston 5 and the connecting rod 8 are fixedly connected, so that the connecting rod 8 can be driven to move together when the first piston 5 is forced to move by the fixed connection.

As shown in fig. 2, the connecting rod 8 and the first piston 5 are vertically distributed, and the first piston 5 and the valve body 1 form a telescopic structure through the first spring 7, so that when the first piston 5 is under the thrust action of the vacuum airflow, the first piston can move correspondingly inside the valve body 1 with the help of the first spring 7.

The working principle is as follows: when in use, the interface of the upper end cover 2 is connected with the vacuum chuck, and the interface of the lower end cover 3 is connected with the control air source.

When no air flow is introduced into the valve body 1, the first piston 5 is pressed against the upper end cover 2 under the elastic force of the first spring 7, the second piston 9 is pressed against the valve body 1 under the elastic force of the second spring 11, and if the sucker adsorbs a workpiece, the sucker can be in a vacuum holding state.

When vacuum airflow is introduced, the first piston 5 overcomes the elastic force and the friction force of the first spring 7 under the action of vacuum negative pressure and moves towards the valve body 1, a gap between the first piston 5 and the upper end cover 2 is opened, and the upper end cover 2 is connected with the sucker and is in a vacuumizing state, so that the workpiece can be adsorbed; the second piston 9 is in the original position because the second piston 9 can not move any more due to the fact that the second piston is already pushed against the shaft shoulder of the valve body 1. When the sucker adsorbs a workpiece and reaches a certain vacuum degree in the cavity of the upper end cover 2 of the workpiece, the forces on the left side and the right side of the first piston 5 reach a balanced state, and along with the increase of the vacuum degree on the side of the sucker, when the force applied to the side of the end cover by the first piston 5 and the elastic force of the spring are greater than the force applied to the side of the valve body 1, the first piston 5 can move to the side of the upper end cover 2 again, and the valve body 1 is closed again, so that the left and the right of energy conservation and vacuum maintenance are realized.

When positive pressure air flow is introduced, the first piston 5 is under positive pressure and bears a leftward force, the first piston pushes the end cover leftwards and cannot move leftwards any more due to the fact that the first piston 5 pushes the end cover leftwards, the second piston 9 generates a rightward force under the positive pressure, the second piston 9 overcomes the elastic force of the second spring 11 to move rightwards, when the second piston 9 moves for a certain stroke, the second piston can push the protruding shaft shoulder of the connecting rod 8 to move rightwards together, the front end of the connecting rod 8 is connected with the first piston 5 through threads, the sectional area of the second piston 9 is larger than that of the first piston 5, the formula F is larger than P S, the rightward force is larger than the leftward force, the second piston 9 and the connecting rod 8 can move rightwards together with the first piston 5, the one-way valve is opened, the positive pressure breaks the vacuum environment in the sucker, and the function of vacuum breaking is achieved.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims

1. A multifunctional vacuum one-way valve comprises a valve body (1) and is characterized in that an upper end cover (2) and a lower end cover (3) are respectively arranged on two sides of the valve body (1), and the inner sides of the upper end cover (2) and the lower end cover (3) are respectively sleeved with an upper end cover sealing ring (12) and a lower end cover sealing ring (4), the inner side of the valve body (1) is provided with a first piston (5), a first piston sealing ring (6) is sleeved on the outer side of the first piston (5), a first spring (7) is connected on the inner side of the first piston (5), a connecting rod (8) is arranged on the inner side of the first spring (7), a second piston (9) is arranged on the outer side of the connecting rod (8), and a second piston sealing ring (10) is sleeved below the outer side of the second piston (9), and a second spring (11) is arranged above the outer side of the second piston (9).

2. The multifunctional vacuum one-way valve according to claim 1, characterized in that the shape and size of the upper end cover (2) and the lower end cover (3) are matched, and the inner side of the upper end cover (2) and the inner side of the lower end cover (3) are both in a communicated structure with the inner side of the valve body (1).

3. The multifunctional vacuum check valve as claimed in claim 1, characterized in that the central axis of the second piston (9) coincides with the central axis of the valve body (1), and the second piston (9) is elastically connected to the valve body (1) via a second spring (11).

4. The multifunctional vacuum one-way valve according to claim 1, characterized in that the valve body (1) is of a circular tube structure, and the inner side of the valve body (1) is closely attached to the outer side of the first piston (5) and the outer side of the second piston (9).

5. The multifunctional vacuum one-way valve according to claim 1, wherein the connecting rod (8) is linearly distributed through the inner sides of the first piston (5) and the second piston (9), and the first piston (5) is fixedly connected with the connecting rod (8).

6. The multifunctional vacuum one-way valve according to claim 1, characterized in that the connecting rod (8) and the first piston (5) are distributed in a vertical state, and the first piston (5) and the valve body (1) form a telescopic structure through the first spring (7).