CN211649172U

CN211649172U - High-pressure sealing check valve

Info

Publication number: CN211649172U
Application number: CN201922296453.4U
Authority: CN
Inventors: 孙晋
Original assignee: Jiangsu Shengye Valve Co ltd
Current assignee: Jiangsu Shengye Valve Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-10-09
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a high pressure sealing check valve, which comprises a valve body, the inner wall of valve body is seted up flutedly, fixedly connected with dead lever between the both sides inner wall of recess, the cover is equipped with the bearing on the dead lever, the inner wall of bearing and the inner wall fixed connection of dead lever, the lateral wall fixedly connected with rocker of bearing, the valve clack that the one end fixedly connected with and the valve body of bearing were matchd is kept away from to the rocker, the joint has the sealing washer that matches with the valve clack in the valve body, the lower extreme inner wall fixedly connected with stopper of valve body, the lower extreme inner wall fixedly connected with of valve body keeps off the stream piece, the upper end lateral wall of valve body has the valve gap rather than matching through fixing bolt connection, the. The utility model discloses a setting up of bearing isotructure can make the valve clack more sensitive when rotating, and is convenient, utilizes stopper and fender stream piece to alleviate the impact of medium backward flow simultaneously, protects the valve clack.

Description

High-pressure sealing check valve

Technical Field

The utility model relates to a check valve technical field especially relates to a high pressure seal check valve.

Background

The check valve is a valve which automatically opens and closes a valve clack depending on the flowing of a medium and is used for preventing the medium from flowing backwards, and is also called a check valve, a one-way valve, a reverse flow valve and a back pressure valve, and the movement modes of the valve clack are divided into a lifting type and a swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. In the prior art, when the valve clack is closed, medium backflow can generate certain impact on the valve clack, so that certain damage can be caused to the valve clack, the service life of the valve clack is shortened, and therefore a high-pressure sealing check valve is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art valve clack when closed, the medium reflux can produce certain impact to the valve clack, can cause certain damage to the valve clack like this, shortens the life's of valve clack problem, and the high pressure seal check valve who provides.

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

a high-pressure sealing check valve comprises a valve body, wherein a groove is formed in the inner wall of the valve body, a fixing rod is fixedly connected between the inner walls of the two sides of the groove, the fixed rod is sleeved with a bearing, the inner wall of the bearing is fixedly connected with the inner wall of the fixed rod, the side wall of the bearing is fixedly connected with a rocker, one end of the rocker far away from the bearing is fixedly connected with a valve clack matched with the valve body, a sealing ring matched with the valve clack is connected in the valve body in a clamping way, the inner wall of the lower end of the valve body is fixedly connected with a limiting block, the inner wall of the lower end of the valve body is fixedly connected with a flow blocking block, the side wall of the upper end of the valve body is connected with a valve cover matched with the valve body through a fixing bolt, the valve gap with be equipped with the gasket between the valve body, the parcel has the friction pad on the stopper, the valve clack with the lateral wall of stopper all is equipped with the chamfer, and the valve clack can produce the friction with the stopper in the rotation process.

Preferably, the material of the flow blocking block is stainless steel, and the side wall of the flow blocking block close to the valve clack is in a convex arc shape.

Preferably, the side wall of the lower end of the valve cover is fixedly connected with a reinforcing block, and the side wall of the upper end of the valve cover is arc-shaped.

Preferably, the inner wall and the outer wall of the valve body are both subjected to anti-corrosion treatment.

The utility model has the advantages that: the friction force of the valve clack is smaller when the valve clack is opened and closed through the rolling of the bearing, so that the valve clack is more sensitive to open and close, the service life of the valve clack is prolonged, meanwhile, the valve clack can be well protected when a medium flows back through the arrangement of the limiting block and the flow blocking block, the structure is simple, and the practicability is high; the friction pad can protect the limiting block, the limiting block is guaranteed to have a long service life, friction between the valve clack and the limiting block can be reduced through the chamfer, and the valve clack is more convenient and stable when being closed.

Drawings

Fig. 1 is a schematic structural view of a high-pressure-sealing check valve according to the present invention;

fig. 2 is a schematic structural diagram at a in fig. 1.

In the figure: 1 valve body, 2 dead levers, 3 bearings, 4 rockers, 5 valve clacks, 6 sealing rings, 7 limiting blocks, 8 flow blocking blocks, 9 valve covers, 10 gaskets and 11 reinforcing blocks.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-2, a high-pressure-sealed check valve includes a valve body 1, both inner and outer walls of the valve body 1 are subjected to anti-corrosion treatment, thus avoiding the medium to corrode the valve body 1 and ensuring that the valve body 1 has good use effect and longer service life, the inner wall of the valve body 1 is provided with a groove, a fixed rod 2 is fixedly connected between the inner walls at the two sides of the groove, a bearing 3 is sleeved on the fixed rod 2, the inner wall of the bearing 3 is fixedly connected with the inner wall of the fixed rod 2, the side wall of the bearing 3 is fixedly connected with a rocker 4, one end of the rocker 4, far away from the bearing 3, is fixedly connected with a valve clack 5 matched with the valve body 1, a sealing ring 6 matched with the valve clack 5 is connected in the valve body 1 in a clamping way, the inner wall at the lower end of the valve, the friction pad can protect the limiting block 7, so that the limiting block 7 is ensured to have longer service life; the side walls of the valve clack 5 and the limiting block 7 are both provided with chamfers, the valve clack 5 can generate friction with the limiting block 7 in the rotating process, the friction between the valve clack 5 and the limiting block 7 can be reduced through the chamfers, the valve clack 5 is more convenient and stable when closed, the inner wall of the lower end of the valve body 1 is fixedly connected with a flow blocking block 8, the flow blocking block 8 is made of stainless steel, the service life is long, the side wall of the flow blocking block 8, which is close to the valve clack 5, is in a convex arc shape, thus, when the valve clack 5 is opened, the medium can more conveniently circulate, the side wall of the upper end of the valve body 1 is connected with a valve cover 9 matched with the valve cover through a fixing bolt, the fixing effect is good, the disassembly is convenient, the maintenance is convenient, the side wall of the lower end of the valve cover 9 is fixedly connected with a reinforcing block 11, the valve cover, thus increasing the contact area and reducing the impact force, and a gasket 10 is arranged between the valve cover 9 and the valve body 1.

When the valve body 1 is used, a medium enters the valve body 1 from the left side, meanwhile, the impact force of the medium can push the valve clack 5, the valve clack 5 drives the rocker 4 to rotate, the rocker 4 rotates along the bearing 3, the rocker 4 can rotate under the action of the bearing 3 and generate smaller friction force, thus, the activities of the valve clack 5 and the rocker 4 are more sensitive, when the medium stops entering the valve body 1, the medium can flow back under the action of reasons such as pressure difference, and the like, meanwhile, the valve clack 5 can drive the rocker 4 to rotate under the action of the gravity of the valve clack 5, so that the valve clack 5 blocks the valve body 1 again, and plays a sealing effect under the matching action of the sealing ring 6, thereby avoiding the medium from flowing out from the left side and the right side of the valve body 1, ensuring the sealing performance of the valve body 1, and simultaneously, through the blocking effect of the flow blocking block 8, the impact, valve clack 5 takes place to rub with stopper 7 when rotating after and separates with stopper 7 again, and the impact force that can make valve clack 5 receive like this reduces to valve clack 5's life extension guarantees valve body 1's leakproofness under the mating reaction of valve gap 9, gasket 10 isotructure moreover, simple structure, and the practicality is strong.

Claims

1. A high-pressure sealing check valve comprises a valve body (1) and is characterized in that a groove is formed in the inner wall of the valve body (1), a fixing rod (2) is fixedly connected between the inner walls of two sides of the groove, a bearing (3) is sleeved on the fixing rod (2), the inner wall of the bearing (3) is fixedly connected with the inner wall of the fixing rod (2), a rocker (4) is fixedly connected with the side wall of the bearing (3), one end, far away from the bearing (3), of the rocker (4) is fixedly connected with a valve clack (5) matched with the valve body (1), a sealing ring (6) matched with the valve clack (5) is connected in the valve body (1) in a clamping manner, a limiting block (7) is fixedly connected with the inner wall of the lower end of the valve body (1), a flow blocking block (8) is fixedly connected with the inner wall of the lower end of the valve body (1), and, valve gap (9) with be equipped with gasket (10) between valve body (1), the parcel has the friction pad on stopper (7), valve clack (5) with the lateral wall of stopper (7) all is equipped with the chamfer, and valve clack (5) can produce the friction with stopper (7) at the rotation in-process.

2. The high-pressure-sealing check valve according to claim 1, characterized in that the material of the flow blocking block (8) is stainless steel, and the side wall of the flow blocking block (8) close to the valve flap (5) is convex arc-shaped.

3. The high-pressure-sealing check valve as claimed in claim 2, wherein a reinforcing block (11) is fixedly connected to a lower end side wall of the valve cover (9), and an upper end side wall of the valve cover (9) is arc-shaped.

4. A high-pressure-tight non-return valve according to claim 1, characterized in that both the inner and outer walls of the valve body (1) are corrosion-protected.