CN214889130U

CN214889130U - Flexible and reliable pressure retaining valve

Info

Publication number: CN214889130U
Application number: CN202121093372.5U
Authority: CN
Inventors: 李承伟; 瞿亿波
Original assignee: Yuhuan Xiede Auto Parts Industry Manufacturing Co ltd
Current assignee: Yuhuan Xiede Auto Parts Industry Manufacturing Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-11-26
Anticipated expiration: 2031-05-19

Abstract

The utility model discloses a flexible and reliable pressure retaining valve, which belongs to the technical field of valve components and is used on an automobile shock absorber, and solves the problem that movable components of the valve are easy to block; the spring is sleeved on the guide pipe, the sliding piston is provided with a bottom support part and sleeved on the spring through the bottom support part, the sealing gasket is fixed at the upper end of the valve core, the center of the valve core is provided with a gas passage, and the valve core is movably assembled in the guide pipe in an inserted manner and covered on the end surface of the lower valve body and the bottom support part through the sealing gasket; the inner wall of the upper valve body and the outer wall of the lower valve body are matched through a concave-convex tooth structure, so that the valve is convenient to disassemble and assemble, and the effect of flexible and reliable work is achieved.

Description

Flexible and reliable pressure retaining valve

Technical Field

The utility model relates to a valve part field especially relates to a nimble reliable pressure retaining valve.

Background

The pressure retaining valve is one kind of relief valve, and in order to keep pressure, atmospheric pressure or atmospheric pressure's stability, and then the product of design, if fluid pressure is too big then need the pressure release and with the protection equipment reliability, the pressure retaining valve can be used usually on some pipeline control.

In current patent publication, application No. 201821574162.6's patent technique discloses a pressure retaining valve, including the valve body, installs the valve subassembly in the valve body, and the guide pin bushing is installed on the valve body top, and a valve rod passes and stretches into in the valve body behind the guide pin bushing and be connected with the valve subassembly, and the top of valve rod is equipped with the hand wheel, be equipped with the gas core device on the valve body, the inside passageway that has of gas core device is equipped with the gas outlet between passageway and the valve body, is equipped with gas core subassembly and gas core pressure cap in the passageway, and the gas core subassembly sets up in gas core pressure cap the inner, and is equipped with the spring between gas core subassembly and the gas core pressure cap, and the outer end of gas core pressure cap has interior pentagonal hole.

According to the above prior art, the fluid path resistance is large, the control flexibility is not high, and the service life is reduced, which cannot meet the high quality requirement of the current users.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's weak point, solve the technical problem in the correlation technique to a certain extent at least, provide a nimble reliable pressure retaining valve to reach nimble reliable, long service life's purpose.

In order to solve the technical problem, the technical scheme of the utility model is that: a flexible and reliable pressure retaining valve comprises a lower valve body, an upper valve body, a valve core, a sealing gasket, a sliding piston and a spring, wherein the lower valve body is provided with a straight air outlet channel and a guide pipe arranged at the position of the air outlet channel, and an installation groove is formed in the lower valve body through the outer wall of the guide pipe; the spring is sleeved on the guide pipe, the sliding piston is provided with a bottom support part and sleeved on the spring through the bottom support part, the sealing gasket is fixed at the upper end of the valve core, the center of the valve core is provided with an air passage, and the valve core is movably assembled in the guide pipe in an inserted manner and covered on the end surface of the lower valve body and the bottom support part through the sealing gasket;

go up the inner wall of valve body and the outer wall of lower valve body and pass through the concave-convex tooth structural cooperation, go up and be provided with on the valve body and supply the spacing constant head tank of case, the port of constant head tank is sealed by sealed the laminating of filling up, is provided with inlet channel on going up the valve body, and inlet channel and constant head tank pass through sealed the isolation of filling up.

As a specific aspect of the present invention, it may be preferable that: the upper port of the guide pipe is provided with a limiting groove, the valve core is provided with a limiting block, and the limiting groove and the limiting block are clamped in a matched mode.

As a specific aspect of the present invention, it may be preferable that: the sliding piston is made of copper materials, and the bottom support part of the sliding piston is just opposite to the port of the positioning groove of the upper valve body.

As a specific aspect of the present invention, it may be preferable that: and the side wall of the lower valve body is provided with a vent hole.

As a specific aspect of the present invention, it may be preferable that: and an air inlet groove is formed in one end of the valve core, and a conical groove is formed in the center of the positioning groove.

As a specific aspect of the present invention, it may be preferable that: unsmooth tooth structure is including setting up two upper and lower rings of outer tooth ring portion on valve body down, setting up the long inner tooth ring portion of round on last valve body inner wall, and the vertical grafting cooperation circumference of inner tooth ring portion and outer tooth ring portion is spacing to be fastened.

The utility model discloses technical effect mainly embodies in following aspect: according to the research of fluid movement and opposite direction, it is known that the change of fluid movement direction or fluid power needs to be assisted by a flow guide structure. In this scheme, the fluid gets into from the passageway of giving vent to anger with vertical direction, direct passing through the gas channel of valve rod, the air current is gathered in the constant head tank of last valve body, the elastic force of spring is great at this moment keeps apart inlet channel and constant head tank with sealed the pad, when atmospheric pressure is greater than the elastic force of spring, then the valve rod, sealed pad, and sliding piston all is pushed open, thereby the air current reaches the other end of last valve body from inlet channel in the past, in this working process, the air current atmospheric pressure is by limiting valve water conservancy diversion effect, atmospheric pressure counteracts on sealed pad, make valve rod and sliding piston activity nimble, the valve rod also receives the guide effect of pipe, the reliable operation, it is very durable, difficult jamming inefficacy.

Drawings

FIG. 1 is a sectional view of the structure of the embodiment;

FIG. 2 is a disassembled view of the structure of the embodiment;

fig. 3 is an exploded view of the structure of the embodiment.

Reference numerals: 1. a lower valve body; 11. an air outlet channel; 12. a conduit; 121. a limiting groove; 13. mounting grooves; 14. a vent hole; 2. an upper valve body; 21. positioning a groove; 22. a tapered groove; 3. a valve core; 31. a gas passage; 32. an air inlet groove; 33. a limiting block; 4. a gasket; 5. a sliding piston; 51. a base portion; 6. a spring; 71. an external gear ring portion; 72. an internal ring gear portion.

Detailed Description

The embodiments of the present invention will be described in detail below, examples of which are illustrated in the accompanying drawings, and the embodiments described below by referring to the drawings are exemplary and intended to explain the present invention so that the technical solutions of the present invention can be more easily understood and grasped, and cannot be construed as limiting the present invention.

Example (b):

a flexible and reliable pressure retaining valve is shown by combining and referring to figures 1, 2 and 3 and comprises a lower valve body 1, an upper valve body 2, a valve core 3, a sealing gasket 4, a sliding piston 5 and a spring 6. The sealing gasket 4 is made of flexible rubber, has good elastic sealing capacity, and can be elastically deformed and reset.

The lower end of the lower valve body 1 is a threaded joint, so that the lower valve body can be conveniently installed on an external pipeline. The lower valve body 1 is provided with a straight air outlet channel 11 and a guide pipe 12 arranged at the position of the air outlet channel 11. An installation groove 13 is formed in the lower valve body 1 through the outer wall of the guide pipe 12. In the mounting groove 13, the spring 6 and the sliding piston 5 can be fitted.

The spring 6 is sleeved on the guide pipe 12, the sliding piston 5 is provided with a bottom support part 51 and is sleeved on the spring 6 through the bottom support part 51, so that one end of the spring 6 is abutted against the bottom of the mounting groove 13, and the other end of the spring 6 is abutted against the floor mop. Due to the elastic potential energy of the spring 6, the sliding piston 5 tends to move upward by the elastic force of the spring 6, but the sliding piston 5 abuts against the gasket 4.

The sealing gasket 4 is fixed at the upper end of the valve core 3, the center of the valve core 3 is provided with the air passage 31, and the valve core 3 is movably assembled in the guide pipe 12 in an inserted mode and covers the end face of the lower valve body 1 and the bottom support part 51 through the sealing gasket 4.

The inner wall of the upper valve body 2 is matched with the outer wall of the lower valve body 1 through a concave-convex tooth structure. Concave-convex tooth structure is including setting up two rings of outer tooth ring portion 71 about on valve body 1 down, setting up the long inner tooth ring portion 72 of round on the inner wall of last valve body 2, and inner tooth ring portion 72 and the vertical grafting cooperation circumference of outer tooth ring portion 71 are spacing to be fastened. Go up and be provided with the spacing constant head tank 21 that supplies case 3 on the valve body 2, the port of constant head tank 21 is sealed by the laminating of sealed 4, is provided with inlet channel on going up the valve body 2, and inlet channel and constant head tank 21 are kept apart through sealed 4.

In order to enable the valve core 3 to keep linear movement, the upper port of the guide pipe 12 is provided with a limiting groove 121, the valve core 3 is provided with a limiting block 33, and the limiting groove 121 and the limiting block 33 are matched and clamped. Therefore, the valve core 3 can be subjected to multiple functions of limiting and guiding, so that the valve core 3 can stably move in the linear direction and is not easy to incline.

Because the sliding piston 5 is a stressed component, high structural strength is required, the sliding piston 5 is made of copper, and the bottom support part 51 of the sliding piston 5 is over against the port of the positioning groove 21 of the upper valve body 2. Thus, the sliding piston 5 is durable and is not easily deformed, and when the gasket 4 is pressed by a force, the gasket 4 is deformed, and the port of the positioning groove 21 can be better sealed after the gasket 4 is deformed. The working process is reliable because the positions are opposite.

In order to prevent the deformation of the sealing gasket 4 from being changed by the air pressure, the side wall of the lower valve body 1 is provided with a vent hole 14. Thus, the installation groove 13 can be communicated with the outside air, in addition, the vent hole 14 can exhaust air when air leakage occurs after the sealing performance of the sealing gasket 4 is reduced, and the working reliability of the pressure retaining valve can be visually known. And (4) rapidly screening and checking defective products when the products leave a factory, wherein if air leakage exists, the defective products are judged. The defective products are not waste products and are only deficient in use, but can still meet the requirements of users in function.

In addition, an air inlet groove 32 is formed at one end of the valve body 3, and a tapered groove 22 is formed at the center of the positioning groove 21. The air inlet groove 32 allows the air to pass through the positioning groove 21 quickly, and the tapered groove 22 allows the air to have a reverse acting force to form a directional pushing force to deform the gasket 4, so that the positioning groove 21 communicates with the air discharge passage.

The working process is as follows: fluid enters from the air outlet channel 11 in the vertical direction and directly passes through the air passing channel 31 of the valve rod, air flow is accumulated in the positioning groove 21 of the upper valve body 2, the elastic force of the spring 6 is larger to isolate the sealing gasket 4 from the air inlet channel and the positioning groove 21, when the air pressure is larger than the elastic force of the spring 6, the valve rod, the sealing gasket 4 and the sliding piston 5 are pushed open, so that the air flow reaches the other end of the upper valve body 2 from the air inlet channel in the past, in the working process, the air pressure of the air flow is guided by the limiting valve, the air pressure reacts on the sealing gasket 4, the valve rod and the sliding piston 5 move flexibly, the valve rod is also guided by the guide pipe 12, and the air pressure-regulating valve is reliable in work, durable and difficult to clamp and lose efficacy.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims

1. A flexible and reliable pressure retaining valve comprises a lower valve body (1), an upper valve body (2), a valve core (3), a sealing gasket (4), a sliding piston (5) and a spring (6), and is characterized in that the lower valve body (1) is provided with a straight air outlet channel (11) and a guide pipe (12) arranged at the position of the air outlet channel (11), and an installation groove (13) is formed in the lower valve body (1) through the outer wall of the guide pipe (12); the spring (6) is sleeved on the guide pipe (12), the sliding piston (5) is provided with a bottom support part (51) and sleeved on the spring (6) through the bottom support part (51), the sealing gasket (4) is fixed at the upper end of the valve core (3), the center of the valve core (3) is provided with an air passing channel (31), and the valve core (3) is movably assembled in the guide pipe (12) in an inserted mode and covered on the end face of the lower valve body (1) and the bottom support part (51) through the sealing gasket (4);

go up the inner wall of valve body (2) and the outer wall of lower valve body (1) and pass through the cooperation of unsmooth tooth structure, go up and be provided with on valve body (2) and supply spacing constant head tank (21) of case (3), the port of constant head tank (21) is sealed by sealed pad (4) laminating, is provided with inlet channel on going up valve body (2), and inlet channel and constant head tank (21) are kept apart through sealed pad (4).

2. The flexible and reliable pressure retention valve of claim 1, wherein: the upper port of the guide pipe (12) is provided with a limiting groove (121), the valve core (3) is provided with a limiting block (33), and the limiting groove (121) and the limiting block (33) are matched and clamped.

3. The flexible and reliable pressure retention valve of claim 1, wherein: the sliding piston (5) is made of copper, and the bottom support part (51) of the sliding piston (5) is just opposite to the port of the positioning groove (21) of the upper valve body (2).

4. The flexible and reliable pressure retention valve of claim 1, wherein: the side wall of the lower valve body (1) is provided with a vent hole (14).

5. The flexible and reliable pressure retention valve of claim 1, wherein: an air inlet groove (32) is formed in one end of the valve core (3), and a conical groove (22) is formed in the center of the positioning groove (21).

6. The flexible and reliable pressure retention valve of claim 1, wherein: concave-convex tooth structure is including setting up two rings of outer tooth ring portion (71) about on valve body (1) down, setting up the long inner tooth ring portion (72) of round on last valve body (2) inner wall, and the vertical grafting cooperation circumference of inner tooth ring portion (72) and outer tooth ring portion (71) is spacing to be fastened.