CN217177535U

CN217177535U - Hydraulic check valve

Info

Publication number: CN217177535U
Application number: CN202220890830.6U
Authority: CN
Inventors: 刘程鹏; 刘向东; 池万养; 刘万群
Original assignee: Zhejiang Meide Machinery Co ltd
Current assignee: Zhejiang Meide Machinery Co ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-08-12
Anticipated expiration: 2032-04-18

Abstract

The utility model discloses a hydraulic check valve, which comprises a valve body, the internally mounted of valve body has the non return device, the non return device includes the montant, the below outer wall rigid coupling of montant has the rubber slab, the bottom rigid coupling of montant has the rubber buffer, the outer wall of rubber buffer closely laminates with the inner wall of rubber sleeve. Compared with the prior art, the hydraulic check valve has the following advantages: through the cooperation between valve body and the non return device, when the montant drives the rubber slab rebound, then the rubber buffer leaves the rubber sleeve in the valve body, make the valve body open, rubber slab sealing valve body top on the montant this moment, prevent the medium upflow, stretch into in the rubber sleeve in the valve body when the rubber buffer, make the valve body close, then elasticity through the rubber dish, make the rubber sleeve hug closely at the rubber buffer outer wall, strengthen the leakproofness, the device has been solved, the seal receptacle is inseparable enough with the contact of movable sealing plug, and can not prevent the problem of medium upflow.

Description

Hydraulic check valve

Technical Field

The utility model relates to a valve technical field specifically is a hydraulic check valve.

Background

Valves are devices that utilize a movable member to open, close, or partially block one or more openings or passages to allow a flow of liquid, air or other gas or bulk material to exit, block, or be regulated; also referred to as a valve element, the movable part of this device.

For example, patent No. CN201320821517.8 discloses a hydraulic check device, which comprises a valve body, a movable sealing plug, and an oil pressure circulating cylinder, and although the device solves the problem that the conventional check valve may lose check ability or loose check seal due to corrosion and rusting of a spring caused by long-time non-closing, the device has the problems that the sealing seat is not in close contact with the movable sealing plug enough and cannot prevent the medium from flowing upwards, and meanwhile, the device needs hydraulic oil to reset the movable sealing plug, and the resetting speed is slow, which affects the use efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hydraulic check valve to solve the device that proposes in the above-mentioned background art, the seal receptacle is inseparable enough with the contact of movable sealing plug, and can not prevent the problem of medium upstream.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a hydraulic check valve, includes the valve body, the internally mounted of valve body has non return device, non return device includes the montant, the below outer wall rigid coupling of montant has the rubber slab, the bottom rigid coupling of montant has the rubber buffer, the outer wall of rubber buffer closely laminates with the inner wall of rubber sleeve, the outer wall rigid coupling of rubber sleeve is in the inside of valve body, the inner wall rigid coupling of rubber sleeve has the rubber dish. The rubber sleeve is tightly attached to the outer wall of the rubber plug through the elasticity of the rubber disc, so that the sealing performance is enhanced.

Preferably, a shell is fixedly connected to the inner wall of the top end of the valve body, and the valve body is communicated with the shell. The vertical rod moves up and down in the shell.

Preferably, a first disc is fixedly connected to the middle of the top end of the shell, the shell is communicated with the first disc, and a second disc is attached to the top end of the first disc. The vertical rod moves up and down in the first disc and the second disc.

Preferably, resetting means is installed to the top of montant, resetting means includes the backup pad, the bottom rigid coupling of backup pad is on the top of second disc, the front end rigid coupling of backup pad has the pneumatic cylinder, the output rigid coupling of pneumatic cylinder has the montant, the below of pneumatic cylinder is provided with the rubber circle, the inner wall of rubber circle is closely laminated with the outer wall of montant, the inner wall in the middle of the top of second disc of outer wall rigid coupling of rubber circle. The valve body is closed, rapid reset is completed, and the closing efficiency of the valve body is improved.

Preferably, the first disk is in communication with the second disk. The vertical rod is convenient to move.

Preferably, four corners of the second disk are in threaded connection with the first disk through bolts. The second disk is connected to the first disk through bolts at four corners.

Compared with the prior art, the beneficial effects of the utility model are that: compared with the prior art, the hydraulic check valve has the following advantages:

through the matching between the valve body and the non-return device, when the vertical rod drives the rubber plate to move upwards, the rubber plug is separated from the rubber sleeve in the valve body to open the valve body, the rubber plate on the vertical rod seals the upper part of the valve body to prevent the medium from flowing upwards, and when the rubber plug extends into the rubber sleeve in the valve body to close the valve body, the rubber sleeve is tightly attached to the outer wall of the rubber plug through the elasticity of the rubber disc to enhance the sealing property, so that the problems that the sealing seat and the movable sealing plug of the device are not tightly contacted and the medium cannot flow upwards are solved;

through the valve body, a housing, first disc, the second disc, cooperation between non return device and the resetting means, when pneumatic cylinder during operation, the output of pneumatic cylinder drives the montant and moves down, then the montant is at the second disc, first disc, casing and valve body are inside to move down, then the montant drives the rubber buffer and stretches into in the rubber sleeve in the valve body fast, make the valve body close, accomplish quick reset, the closing efficiency of improvement valve body, the device has been solved, it resets to need hydraulic oil messenger movable sealing plug, the speed of resetting is slow, influence the problem of availability factor.

Drawings

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

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the structure A in FIG. 2;

fig. 4 is a schematic structural diagram of B in fig. 1.

In the figure: 1. valve body, 2, casing, 3, first disc, 4, non return device, 401, montant, 402, rubber slab, 403, rubber buffer, 404, rubber sleeve, 405, rubber disc, 5, resetting means, 501, backup pad, 502, pneumatic cylinder, 503, rubber circle, 6, connecting device, 601, disc, 602, mounting hole, 7, second disc, 8, bolt.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a hydraulic check valve comprises a valve body 1, a check device 4 is installed inside the valve body 1, the check device 4 comprises a vertical rod 401, a rubber plate 402 is fixedly connected to the outer wall of the lower portion of the vertical rod 401, a rubber plug 403 is fixedly connected to the bottom end of the vertical rod 401, the vertical rod 401 drives the rubber plate 402 and the rubber plug 403 to move up and down, the outer wall of the rubber plug 403 is tightly attached to the inner wall of a rubber sleeve 404, the outer wall of the rubber sleeve 404 is fixedly connected to the inner portion of the valve body 1, the rubber plug 403 extends into the rubber sleeve 404 in the valve body 1 to close the valve body 1, otherwise, the valve body 1 is opened, a rubber disc 405 is fixedly connected to the inner wall of the rubber sleeve 404, through the matching between the valve body 1 and the check device 4, when the vertical rod 401 drives the rubber plate 402 to move up, the rubber plug 403 leaves the rubber sleeve 404 in the valve body 1 to open the valve body 1, at the moment, the rubber plate 402 on the vertical rod 401 seals the upper portion of the valve body 1 to prevent medium from flowing upwards, when the rubber plug 403 extends into the rubber sleeve 404 in the valve body 1 to close the valve body 1, the rubber sleeve 404 is tightly attached to the outer wall of the rubber plug 403 through the elasticity of the rubber disc 405, so that the sealing performance is enhanced.

The top end inner wall of valve body 1 is fixedly connected with casing 2, and valve body 1 is linked together with casing 2, and montant 401 reciprocates in casing 2.

A first disc 3 is fixedly connected to the middle of the top end of the shell 2, the shell 2 is communicated with the first disc 3, a second disc 7 is attached to the top end of the first disc 3, and the vertical rod 401 moves up and down in the first disc 3 and the second disc 7.

A reset device 5 is installed above the vertical rod 401, the reset device 5 comprises a support plate 501, the bottom end of the support plate 501 is fixedly connected to the top end of the second disc 7, a hydraulic cylinder 502 is fixedly connected to the front end of the support plate 501, the type of the hydraulic cylinder 502 is MOB, the output end of the hydraulic cylinder 502 is fixedly connected with the vertical rod 401, the output end of the hydraulic cylinder 502 drives the vertical rod 401 to move up and down, a rubber ring 503 is arranged below the hydraulic cylinder 502, the inner wall of the rubber ring 503 is tightly attached to the outer wall of the vertical rod 401, the outer wall of the rubber ring 503 is fixedly connected to the middle inner wall above the second disc 7, the rubber ring 503 seals the joint of the vertical rod 401 and the second disc 7, and through the matching of the valve body 1, the shell 2, the first disc 3, the second disc 7, the non-return device 4 and the reset device 5, when the hydraulic cylinder 502 works, the output end of the hydraulic cylinder 502 drives the vertical rod 401 to move down, then the vertical rod 401 moves on the second disc 7, First disc 3, casing 2 and the interior downward movement of valve body 1, then montant 401 drives rubber buffer 403 and stretches into in the rubber sleeve 404 in the valve body 1 fast, makes valve body 1 close, accomplishes quick reset, improves the efficiency of closing of valve body 1.

The first disk 3 is communicated with the second disk 7, four corners of the second disk 7 are in threaded connection with the first disk 3 through bolts 8, and the second disk 7 is connected to the first disk 3 through the bolts 8 at the four corners.

Connecting device 6 is installed to the outside of valve body 1, and connecting device 6 includes plectane 601, and the inner wall of plectane 601 rigid coupling is respectively at the both sides outer wall of valve body 1, and valve body 1 supports the plectane 601 of both sides, and mounting hole 602 has all been seted up to the four corners inner wall of plectane 601, and through the cooperation between valve body 1 and the connecting device 6, in external screw wears into the mounting hole 602 in the four corners of plectane 601 of both sides, can make valve body 1 be connected with external pipeline fast.

When the hydraulic check valve is used, firstly, the vertical rod 401 drives the rubber plug 403 to extend into the rubber sleeve 404 on the valve body 1, the second disk 7 is connected to the first disk 3 by bolts 8 at four corners, external screws are inserted into the mounting holes 602 at four corners of the two side disks 601, the valve body 1 can be connected with an external pipeline, when the hydraulic cylinder 502 works and the hydraulic cylinder 502 drives the vertical rod 401 to move upwards, the rubber stopper 403 leaves the rubber sleeve 404, the valve body 1 is opened at this time, the medium flows through the valve body 1, the rubber plate 402 on the vertical rod 401 seals the upper part of the valve body 1 at this time, the output end of the hydraulic cylinder 502 drives the vertical rod 401 to move downwards, the vertical rod 401 moves downward within the second disc 7, the first disc 3, the housing 2 and the valve body 1, the vertical rod 401 drives the rubber plug 403 to rapidly extend into the rubber sleeve 404 in the valve body 1, so that the valve body 1 is closed, and the rubber ring 503 seals the joint between the vertical rod 401 and the second disk 7.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A hydraulic check valve, comprising a valve body (1), characterized in that: the internally mounted of valve body (1) has non return device (4), non return device (4) include montant (401), the below outer wall rigid coupling of montant (401) has rubber slab (402), the bottom rigid coupling of montant (401) has rubber buffer (403), the outer wall of rubber buffer (403) closely laminates with the inner wall of rubber sleeve (404), the outer wall rigid coupling of rubber sleeve (404) is in the inside of valve body (1), the inner wall rigid coupling of rubber sleeve (404) has rubber dish (405).

2. The hydraulic check valve as recited in claim 1, further comprising: the inner wall of the top end of the valve body (1) is fixedly connected with a shell (2), and the valve body (1) is communicated with the shell (2).

3. A hydraulic check valve as defined in claim 2 wherein: the middle of the top end of the shell (2) is fixedly connected with a first disc (3), the shell (2) is communicated with the first disc (3), and the top end of the first disc (3) is attached with a second disc (7).

4. The hydraulic check valve as recited in claim 1, further comprising: resetting means (5) are installed to the top of montant (401), resetting means (5) include backup pad (501), the bottom rigid coupling of backup pad (501) is on the top of second disc (7), the front end rigid coupling of backup pad (501) has pneumatic cylinder (502), the output rigid coupling of pneumatic cylinder (502) has montant (401), the below of pneumatic cylinder (502) is provided with rubber circle (503), the inner wall of rubber circle (503) closely laminates with the outer wall of montant (401), the inner wall in the middle of the top of second disc (7) of outer wall rigid coupling of rubber circle (503).

5. A hydraulic check valve as defined in claim 3 wherein: the first disc (3) is communicated with the second disc (7).

6. A hydraulic check valve as defined in claim 3 wherein: four corners of the second disc (7) are in threaded connection with the first disc (3) through bolts (8).