CN217784219U

CN217784219U - Flow control valve with leak protection function

Info

Publication number: CN217784219U
Application number: CN202221155928.3U
Authority: CN
Inventors: 叶正良
Original assignee: Hangzhou Xinye Control Valve Co ltd
Current assignee: Hangzhou Xinye Control Valve Co ltd
Priority date: 2022-05-12
Filing date: 2022-05-12
Publication date: 2022-11-11
Anticipated expiration: 2032-05-12

Abstract

The utility model discloses a flow control valve with leak protection function relates to valve technical field. Including valve body, valve gap, valve rod and lock nut, the inlet and outlet department of valve body installs sealed pad and first sealing washer respectively, the valve gap is installed on the valve body, and junction inboard between them is provided with the second sealing washer, and the junction outside is provided with big envelope, the valve rod is arranged in the valve gap, and is provided with gland packing between the two, first sealing ring and second sealing ring have set gradually on the valve rod, lock nut installs on the valve gap. This flow control valve with leak protection function, on original sealed basis, through even establishing twice sealing ring on the valve rod, can ensure the leakproofness between valve rod and the valve gap, alleviate the sealed pressure that receives of packing, prolong its life, set up sealed pad and first sealing washer respectively in entrance department simultaneously, guarantee and the connectivity between the pipeline to improve the leak protection performance of governing valve.

Description

Flow control valve with leak protection function

Technical Field

The utility model relates to the technical field of valves, specifically be a flow control valve with leak protection function.

Background

The typical flow control valves, such as electric needle valves, electric ball valves and electric butterfly valves, can be used for controlling the flow of various types of fluids, such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, and mainly play a role in cutting off and throttling on pipelines.

For the existing regulating valve, there are still some problems, for example, the existing regulating valve is sealed only by the packing, the sealing performance is not good, and the inlet and outlet at the two ends are connected only by the screw thread, the water leakage condition is easy to occur during the use, and the use effect is affected, so we propose a flow regulating valve with leakage-proof function, so as to solve the problems existing in the above.

SUMMERY OF THE UTILITY MODEL

The utility model provides a flow control valve with leak protection function to solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a flow control valve with leak protection function, includes valve body, valve gap, valve rod and lock nut, the inlet and outlet department of valve body installs sealed pad and first sealing washer respectively, the valve gap is installed on the valve body, and junction inboard between them is provided with the second sealing washer, and the junction outside is provided with the big envelope, the valve rod is arranged in the valve gap, and is provided with the sealing filler between the two, first sealing ring and second sealing ring have set gradually on the valve rod, lock nut installs on the valve gap.

Furthermore, a channel is arranged in the valve body, and the bottom end of the valve rod is located in the channel.

Furthermore, the sealing gasket is positioned on the end surfaces of the inlet and the outlet of the valve body, and the first sealing ring is positioned on the outer ring wall of the inlet and the outlet of the valve body.

Furthermore, a packing gland is arranged in the valve cover and is positioned above the sealing packing.

Furthermore, the upper part of the packing gland is positioned between the valve cover and the locking nut, and the locking nut is in threaded connection with the valve rod.

Furthermore, the top end of the valve rod extends to the upper part of the locking nut, and a hand wheel is installed on the valve rod.

Compared with the prior art, the utility model provides a flow control valve with leak protection function possesses following beneficial effect:

this flow control valve with leak protection function, on original sealed basis, through even establishing twice sealing ring on the valve rod, can ensure the leakproofness between valve rod and the valve gap, alleviate the sealed pressure that receives of packing, prolong its life, set up sealed pad and first sealing washer respectively in entrance department simultaneously, guarantee and the connectivity between the pipeline to improve the leak protection performance of governing valve.

Drawings

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

fig. 2 is a front view of the present invention.

In the figure: 1. a valve body; 2. a valve cover; 3. a valve stem; 4. locking the nut; 5. a gasket; 6. a first seal ring; 7. a second seal ring; 8. a cover; 9. sealing the filler; 10. a first seal ring; 11. a second seal ring; 12. a channel; 13. a packing gland; 14. a handwheel.

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.

Please refer to fig. 1-2, the utility model discloses a flow control valve with leak protection function, including valve body 1, valve gap 2, valve rod 3 and lock nut 4, the entrance and exit department of valve body 1 installs sealed pad 5 and first sealing washer 6 respectively, valve gap 2 is installed on valve body 1, and junction inboard between them is provided with second sealing washer 7, and the junction outside is provided with big envelope 8, valve rod 3 is arranged in valve gap 2, and is provided with the packings 9 between the two, first sealing ring 10 and second sealing ring 11 have set gradually on the valve rod 3, lock nut 4 installs on valve gap 2, on original sealed basis, through even establishing two sealing rings on valve rod 3, can ensure the leakproofness between valve rod 3 and the valve gap 2, alleviate the pressure that the packings receives, prolong its life, set up sealed pad 5 and first sealing washer 6 respectively in entrance and exit simultaneously, guarantee and the connectivity between the pipeline to improve the leak protection performance of governing valve.

Specifically, a channel 12 is arranged in the valve body 1, and the bottom end of the valve rod 3 is positioned in the channel 12.

In this embodiment, the fluid medium enters the channel 12 in the valve body 1 for shut-off or throttling by the action of the valve rod 3.

Specifically, the sealing gasket 5 is located on the end surfaces of the inlet and the outlet of the valve body 1, and the first sealing ring 6 is located on the outer annular wall of the inlet and the outlet of the valve body 1.

In this embodiment, the inlet and the outlet are respectively provided with a sealing gasket 5 and a first sealing ring 6, so that the connection between the sealing gasket and the pipeline is guaranteed.

Specifically, a packing gland 13 is arranged in the valve cover 2, and the packing gland 13 is positioned above the sealing packing 9.

In this embodiment, the packing seal is a dynamic seal device which generates a pressing force between the packing and the rotating member and the fixed member by a pre-tightening or self-tightening action of a medium pressure, and the packing gland 13 is used for pre-tightening the packing to prevent the medium from leaking during operation.

Specifically, the upper part of the packing gland 13 is located between the valve cover 2 and the locking nut 4, and the locking nut 4 is in threaded connection with the valve rod 3.

In this embodiment, the lock nut 4 is used for pre-tightening the valve cap 2 and is simultaneously in threaded connection with the valve rod 3, so that the valve rod 3 can be pre-tightened.

Specifically, the top end of the valve rod 3 extends above the lock nut 4, and a hand wheel 14 is mounted on the top end.

In this embodiment, the hand wheel 14 is a manually operated wheel, and is designed to be humanized, so as to facilitate the operation of the valve rod 3.

When the valve is used, on the basis of original sealing (the manual needle valve is used), two sealing rings are connected on the valve rod 3, the sealing property between the valve rod 3 and the valve cover 2 can be guaranteed, the pressure applied to packing sealing is reduced, the service life of the valve is prolonged, the sealing gasket 5 and the first sealing ring 6 are respectively arranged at the inlet and the outlet, the connection between the sealing gasket and the pipeline is guaranteed, and the leakage-proof performance of the regulating valve is improved

To sum up, this flow control valve with leak protection function through even establishing twice sealing ring on valve rod 3 on original sealed basis, can ensure the leakproofness between valve rod 3 and the valve gap 2, alleviates the sealed pressure that receives of packing, prolongs its life, has set up sealed pad 5 and first sealing washer 6 respectively simultaneously in entry exit, guarantee and the pipeline between the connectivity to improve the leak protection performance of governing valve.

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. The utility model provides a flow control valve with leak protection function, includes valve body (1), valve gap (2), valve rod (3) and lock nut (4), its characterized in that: the utility model discloses a valve rod, including valve body (1), valve rod (3), valve gap (2), sealing gasket (5) and first sealing washer (6) are installed respectively to the business turn over mouth department of valve body (1), and junction inboard between them is provided with second sealing washer (7), and the junction outside is provided with big envelope (8), valve rod (3) are arranged in valve gap (2), and are provided with between the two and seal packing (9), first sealing ring (10) and second sealing ring (11) have set gradually on valve rod (3), lock nut (4) are installed on valve gap (2).

2. A flow rate regulating valve having a leakage preventing function according to claim 1, wherein: a channel (12) is arranged in the valve body (1), and the bottom end of the valve rod (3) is located in the channel (12).

3. A flow rate regulating valve having a leakage preventing function according to claim 1, wherein: the sealing gasket (5) is positioned on the end surface of the inlet and the outlet of the valve body (1), and the first sealing ring (6) is positioned on the outer annular wall of the inlet and the outlet of the valve body (1).

4. A flow rate regulating valve having a leakage preventing function according to claim 1, wherein: and a packing gland (13) is arranged in the valve cover (2), and the packing gland (13) is positioned above the sealing packing (9).

5. A flow rate regulating valve having a leakage preventing function according to claim 4, wherein: the upper portion of gland (13) is located between valve gap (2) and lock nut (4), lock nut (4) and valve rod (3) threaded connection.

6. A flow rate regulating valve having a leakage preventing function according to claim 1, wherein: the top end of the valve rod (3) extends to the upper part of the locking nut (4), and a hand wheel (14) is arranged on the valve rod.