CN215861900U

CN215861900U - Efficient and safe long-life check valve

Info

Publication number: CN215861900U
Application number: CN202121733308.9U
Authority: CN
Inventors: 张纯新
Original assignee: Zhejiang Naiqiang Fluorine Valve Co ltd
Current assignee: Wenzhou Xin Kong Machinery Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-02-18
Anticipated expiration: 2031-07-28

Abstract

The utility model relates to the technical field of valves and discloses a high-efficiency safe check valve with long service life, which comprises a check valve body, wherein a first valve cover is fixedly connected to the outer surface of the upper end of the check valve body, a gasket is fixedly connected to the outer surface of the upper end of the first valve cover, a second valve cover is fixedly connected to the outer surface of the upper end of the gasket, a telescopic support rod is fixedly connected to the outer surface of the lower end of the first valve cover, a telescopic loop bar is movably connected to the outer wall of the telescopic support rod, a valve clack is fixedly connected to the outer surface of the lower end of the telescopic loop bar, a first sealing washer is movably connected to the inner surface of the upper end of the check valve body, a buffer spring is fixedly connected to the outer surface of the lower end of the first sealing washer, and a second sealing washer is fixedly connected to the outer surface of the lower end of the buffer spring. This high-efficient safe high life check valve through set up the seal ring that has the buffering effect in check valve body inside, the valve clack can easily cracked again, has improved check valve body's whole life.

Description

Efficient and safe long-life check valve

Technical Field

The utility model relates to the technical field of valves, in particular to a high-efficiency and safe check valve with a long service life.

Background

The check valve is a valve whose opening and closing part is a circular valve clack and acts by self weight and medium pressure to block medium backflow, also called a check valve, a one-way valve, a backflow valve or an isolation valve, the valve clack movement mode is divided into lifting type and swing type, the lifting check valve is similar to the stop valve in structure, only a valve rod for driving the valve clack is lacked, medium flows in from an inlet end and flows out from an outlet end, when the inlet pressure is greater than the sum of the weight of the valve clack and flow resistance thereof, the valve is opened, otherwise, the valve is closed when the medium flows backwards.

When the pressure of media in front and at the back of the lifting check valve is in a state of being close to balance and mutually sawing, the valve clack can frequently flap with the valve seat, and the valve clack can crack after being flapped with the valve seat for multiple times and then be broken, so that the service time of the whole lifting check valve is shortened, the whole lifting check valve cannot be used for a long time, and therefore the high-efficiency and safe long-life check valve is provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the efficient and safe check valve with the long service life, which has the advantage of long service life and solves the problem that the valve clack is easy to crack after being flapped for many times.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high-efficient safe high life check valve, including the check valve body, the first valve gap of upper end external surface fixedly connected with of check valve body, the upper end external surface fixedly connected with gasket of first valve gap, the upper end external surface fixedly connected with second valve gap of gasket, the lower extreme external surface fixedly connected with telescopic support rod of first valve gap, telescopic support rod's outer wall swing joint has telescopic loop bar, telescopic loop bar's lower extreme external surface fixedly connected with valve clack, the upper end internal surface swing joint of check valve body has first seal ring, the lower extreme external surface fixedly connected with buffer spring of first seal ring, buffer spring's lower extreme external surface fixedly connected with second seal ring.

Preferably, the right side outer fixed surface of check valve body is connected with outlet conduit, and the left side outer fixed surface of check valve body is connected with the inlet channel, and the left side outer fixed surface of inlet channel is connected with the connection lantern ring, and the inner wall fixedly connected with impurity collecting pipe of the connection lantern ring, the inner wall swing joint of impurity collecting pipe have the filtering duct, the inner wall fixedly connected with filter screen of filtering duct.

Preferably, the draw-in groove has been seted up to the upper end internal surface of check valve body, the outer wall and the draw-in groove fixed connection of first seal ring, and the buffer spring at the bottom of the first seal ring can reduce the impact that the valve clack received.

Preferably, the inner wall of the telescopic sleeve rod is provided with a connecting hole, the outer wall of the telescopic supporting rod is movably connected with the inner wall of the telescopic sleeve rod, and when the telescopic branch rod retracts into the telescopic sleeve rod, water flow can enter the water outlet pipeline.

Preferably, the left side surface of the water inlet pipeline is provided with a threaded connecting hole, the left side surface of the connecting sleeve ring is provided with a threaded connecting column, the threaded connecting hole is matched with the threaded connecting column, and the impurity collecting pipe can be pulled out by taking down the connecting sleeve ring.

Preferably, the inner wall of the filtering pipeline is provided with a groove, the outer surface of the lower end of the filter screen is fixedly connected with the groove, and the filter screen in the filtering pipeline can filter impurities.

(III) advantageous effects

Compared with the prior art, the utility model provides an efficient and safe check valve with long service life, which has the following beneficial effects:

1. this high-efficient safe high life check valve through the seal ring that has buffering effect that sets up in check valve body inside, when medium pressure was in the state of being close balanced and the chain saw of each other around the lift check valve, the valve clack can strike mutually with first seal ring, and buffer spring under the first seal ring cushions the impact force, and then protects the valve clack for the valve clack can easily be cracked again, has improved check valve body's whole life.

2. This high-efficient safe high life check valve through set up an impurity collection device in inlet channel department, when the water that has impurity is mixed in the check valve body, its impurity can be filtered by the filter screen in the filtering duct and enter into the impurity collecting pipe in, no longer enters into the outlet conduit at the back, has effectively prevented the rivers refluence.

Drawings

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

FIG. 2 is a schematic view of the structure of the telescopic rod of the present invention;

FIG. 3 is a schematic view of a first gasket of the present invention;

FIG. 4 is a schematic view of the structure of the connection collar of the present invention

Fig. 5 is a schematic view of the structure of the filter tube of the present invention.

Wherein: 1. a check valve body; 2. a first valve cover; 3. a gasket; 4. a second valve cover; 5. a telescopic strut; 6. a telescopic loop bar; 7. a valve flap; 8. a first sealing gasket; 9. a buffer spring; 10. a second sealing gasket; 11. a water inlet pipe; 12. a water outlet pipeline; 13. a connecting lantern ring; 14. an impurity collecting pipe; 15. a filtration pipeline; 16. and (5) filtering by using a filter screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1, 2 and 3, the present invention provides a buffer device, including a check valve body 1, a first valve cap 2 is fixedly connected to an upper outer surface of the check valve body 1, a gasket 3 is fixedly connected to an upper outer surface of the first valve cap 2, a second valve cap 4 is fixedly connected to an upper outer surface of the gasket 3, a telescopic strut 5 is fixedly connected to a lower outer surface of the first valve cap 2, a telescopic loop bar 6 is movably connected to an outer wall of the telescopic strut 5, a valve flap 7 is fixedly connected to a lower outer surface of the telescopic loop bar 6, a first sealing washer 8 is movably connected to an upper inner surface of the check valve body 1, a buffer spring 9 is fixedly connected to a lower outer surface of the first sealing washer 8, a second sealing washer 10 is fixedly connected to a lower outer surface of the buffer spring 9, a clamping groove is formed in an upper inner surface of the check valve body 1, and an outer wall of the first sealing washer 8 is fixedly connected to the clamping groove, the inner wall of the telescopic loop bar 6 is provided with a connecting hole, the outer wall of the telescopic supporting rod 5 is movably connected with the inner wall of the telescopic loop bar 6, water flow enters the valve body of the check valve from the water inlet pipeline, when the medium pressure is in a state of being close to balance and mutually pulling and sawing before and after the lifting check valve, the valve clack can be impacted with the first sealing washer, the buffer spring below the first sealing washer buffers the impact force, the valve clack moves upwards again, the telescopic supporting rod is retracted into the telescopic loop bar, and the water flow enters the water outlet pipeline.

Example two

Referring to fig. 1, 3 and 4, a water outlet pipe 12 is fixedly connected to the right outer surface of a check valve body 1, a water inlet pipe 11 is fixedly connected to the left outer surface of the check valve body 1, a connection sleeve ring 13 is fixedly connected to the left outer surface of the water inlet pipe 11, an impurity collecting pipe 14 is fixedly connected to the inner wall of the connection sleeve ring 13, a filtering pipe 15 is movably connected to the inner wall of the impurity collecting pipe 14, a filter screen 16 is fixedly connected to the inner wall of the filtering pipe 15, a threaded connection hole is formed in the left outer surface of the water inlet pipe 11, a threaded connection post is arranged on the left outer surface of the connection sleeve ring 13, the threaded connection hole is matched with the threaded connection post, a groove is formed in the inner wall of the filtering pipe 15, the lower outer surface of the filter screen 16 is fixedly connected with the groove, when impurity water with impurities is mixed in the check valve body, the impurities can be filtered by the filter screen in the filtering pipe and enter the impurity collecting pipe, the self-locking state of the connecting lantern ring is released, and the impurity collecting pipe is pulled out from the check valve body to clean impurities in the pipeline.

The working principle is as follows: when the high-efficiency safe long-life check valve is used, the sealing washer with the buffering effect is arranged in the check valve body, when the front and back medium pressures of the lifting check valve are in a state of being close to balance and mutually sawn, the valve clack can collide with the first sealing washer, the buffering spring below the first sealing washer buffers the collision force, the valve clack moves upwards again, the telescopic branch is retracted into the telescopic sleeve rod, water flows into the water outlet pipeline, thus the collision force borne by the valve clack is reduced, the valve clack is further protected, the valve clack can not be broken easily, the whole service life of the check valve body is prolonged, when water with impurities is doped into the check valve body, the impurities can be filtered by the filter screen in the filtering pipeline and enter the impurity collecting pipe, the self-locking state of the connecting sleeve ring is released, and the impurity collecting pipe is pulled out from the check valve body to remove the impurities in the pipeline, therefore, impurities can be prevented from entering the water outlet pipeline at the back, and water flow backflow is effectively prevented.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high-efficient safe high life check valve, includes check valve body (1), its characterized in that: the upper end external fixed surface of check valve body (1) is connected with first valve gap (2), the upper end external fixed surface of first valve gap (2) is connected with gasket (3), the upper end external fixed surface of gasket (3) is connected with second valve gap (4), the lower extreme external fixed surface of first valve gap (2) is connected with telescopic branch (5), the outer wall swing joint of telescopic branch (5) has flexible loop bar (6), the lower extreme external fixed surface of flexible loop bar (6) is connected with valve clack (7), the upper end internal surface swing joint of check valve body (1) has first seal ring (8), the lower extreme external fixed surface of first seal ring (8) is connected with buffer spring (9), the lower extreme external fixed surface of buffer spring (9) is connected with second seal ring (10).

2. An efficient and safe high-life check valve as set forth in claim 1, wherein: the utility model discloses a check valve, including check valve body (1), the outer fixed surface in right side of check valve body (1) is connected with outlet conduit (12), the outer fixed surface in left side of check valve body (1) is connected with inlet channel (11), the outer fixed surface in left side of inlet channel (11) is connected with the connection sleeve ring (13), the inner wall fixedly connected with impurity collecting pipe (14) of connection sleeve ring (13), the inner wall swing joint of impurity collecting pipe (14) has filtering duct (15), the inner wall fixedly connected with filter screen (16) of filtering duct (15).

3. An efficient and safe high-life check valve as set forth in claim 1, wherein: the inner surface of the upper end of the check valve body (1) is provided with a clamping groove, and the outer wall of the first sealing washer (8) is fixedly connected with the clamping groove.

4. An efficient and safe high-life check valve as set forth in claim 1, wherein: the inner wall of the telescopic sleeve rod (6) is provided with a connecting hole, and the outer wall of the telescopic support rod (5) is movably connected with the inner wall of the telescopic sleeve rod (6).

5. An efficient and safe high-life check valve as set forth in claim 2, wherein: the water inlet pipe is characterized in that a threaded connecting hole is formed in the outer surface of the left side of the water inlet pipeline (11), a threaded connecting column is arranged on the outer surface of the left side of the connecting sleeve ring (13), and the threaded connecting hole is matched with the threaded connecting column.

6. An efficient and safe high-life check valve as set forth in claim 2, wherein: the inner wall of the filtering pipeline (15) is provided with a groove, and the outer surface of the lower end of the filter screen (16) is fixedly connected with the groove.