CN220227955U

CN220227955U - Vacuum breaking valve

Info

Publication number: CN220227955U
Application number: CN202321790624.9U
Authority: CN
Inventors: 顾朝党; 王秋林; 田峰; 周辰
Original assignee: SHANGHAI VALVE FACTORY CO Ltd
Current assignee: SHANGHAI VALVE FACTORY CO Ltd
Priority date: 2023-07-08
Filing date: 2023-07-08
Publication date: 2023-12-22
Anticipated expiration: 2033-07-08

Abstract

The utility model belongs to the technical field of valve device technique and specifically relates to a vacuum destruction valve is related to, including last valve body, go up and be equipped with down the valve body on the valve body, be equipped with the air inlet on going up the valve body, be equipped with the disk seat in going up, a plurality of runner holes have been seted up on the disk seat, be equipped with the movable hole on the disk seat, wear to establish and sliding connection have the valve rod on the movable hole, valve rod is kept away from last valve body one end and is equipped with the valve clack, valve rod is kept away from valve clack one end threaded connection and is had adjusting nut, the cover is equipped with the spring on the valve rod, spring one end is connected in adjusting nut, adjusting nut one end is kept away from to the spring is connected in the disk seat, the valve clack butt can be forced to be kept away from in the disk seat and is gone up a valve body side, wear to be equipped with same split pin on adjusting nut and the valve rod, through adjusting nut's position, can change the compression of spring, thereby realize the regulation of pressure, the valve can be applied to in the pipe system of different pressures.

Description

Vacuum breaking valve

Technical Field

The application relates to the technical field of valve devices, in particular to a vacuum breaking valve.

Background

The vacuum breaking valve is also called as a siphon breaking valve, can be widely applied to various pipeline systems which are easy to generate vacuum, and can timely suck air to break the vacuum or negative pressure environment in the pipeline when negative pressure is formed in the pipeline, so that the pipeline system is protected from being broken by atmospheric pressure.

The current Chinese patent publication No. CN212899961U discloses an air injection vacuum breaking valve, which comprises a valve body, the inlet port has been seted up to the valve body lower extreme fixedly, the inside fixedly connected with fixed plate of inlet port, fixed plate middle part fixedly connected with second fixing base, the through-hole has been seted up to the fixing base middle part fixedly, second fixing base upper end fixedly connected with spring, spring upper end fixedly connected with valve clack, the circular through-hole has been seted up to the valve body upper end fixedly, two dead levers of inside fixedly connected with of valve body upper end, two dead levers keep away from the one end fixedly connected with first fixing base of valve body, first fixing base middle part fixedly connected with guide bar, the guide bar lower extreme passes inside the through-hole.

According to the prior art, the gas injection vacuum breaking valve cannot adjust the pressure of the valve according to the pressure in different pipeline systems, and cannot be applied to the pipeline systems with different pressures.

Disclosure of Invention

In order to enable the valve to be used in various pipeline systems with different pressures, the application provides a vacuum breaking valve.

The application provides a vacuum break valve adopts following technical scheme:

the utility model provides a vacuum breaking valve, including last valve body, go up and be equipped with the lower valve body on the valve body, upward be equipped with the air inlet on the valve body, upward be equipped with the disk seat in the valve body, a plurality of runner holes have been seted up on the disk seat, be equipped with the movable hole on the disk seat, wear to establish and sliding connection have the valve rod on the movable hole, valve rod is kept away from last valve body one end and is equipped with the valve clack, valve rod is kept away from valve clack one end threaded connection and has adjusting nut, the cover is equipped with the spring on the valve rod, spring one end is connected in adjusting nut, adjusting nut one end is kept away from to the spring is connected in the disk seat, the spring can force valve clack butt in the disk seat to keep away from a valve body side, wear to be equipped with same cotter on adjusting nut and the valve rod.

Through adopting above-mentioned technical scheme, through adjusting the position of adjusting nut, can change the compression volume of spring to realize the regulation of pressure, the valve of being convenient for can be applied to the pipe-line system of different pressures.

Optionally, the valve rod is sleeved with a limiting block, a cylindrical pin is arranged on the limiting block in a penetrating mode, the valve rod is arranged in a penetrating mode, and the limiting block can be abutted to one side face, close to the upper valve body, of the valve seat.

Through adopting above-mentioned technical scheme, the stopper can restrict valve clack displacement distance, reduces the valve clack and excessively leads to the possibility of valve damage.

Optionally, one end of the upper valve body, which is close to the lower valve body, is provided with a compression ring, one side surface of the valve seat, which is close to the valve clack, is abutted against the compression ring, the outer peripheral surface of the valve seat is embedded with a sealing ring, the outer peripheral surface of the sealing ring is abutted against the upper valve body, the upper valve body is provided with a composite gasket, and the composite gasket is abutted against one side surface of the valve seat, which is close to the upper valve body.

Through adopting above-mentioned technical scheme, be equipped with multiple seal structure between clamping ring, sealing washer, compound gasket, disk seat and the last valve body, simple structure, sealed effect is superior.

Optionally, a sealing ring is embedded on a side surface of the valve seat, which is close to the valve clack, and the valve clack is abutted against the sealing ring.

Through adopting above-mentioned technical scheme, the sealing ring butt in the valve clack, further increase the gas tightness of valve, reduce the possibility of valve gas leakage.

Optionally, the flow passage holes are arranged at a certain angle.

Through adopting above-mentioned technical scheme, the runner hole is certain angle setting for air forms the reaction when promoting the disk seat and pushes away on the valve clack, and the valve clack of being convenient for keeps away from the disk seat.

Optionally, the inner wall of the movable hole is provided with an anti-abrasion groove, and the inner wall of the movable hole is hardened.

By adopting the technical scheme, the anti-abrasion groove is formed in the movable hole, the guiding friction area of the up-and-down movement of the valve clack is reduced, the possibility that the valve cannot return accurately after acting can be reduced, and meanwhile, the inner wall of the movable hole can be prevented from being scratched and seized by adopting hardening treatment.

Optionally, the upper valve body is connected with a valve cover through threads, the air inlet penetrates through the valve cover, and the upper valve body is provided with a spring retainer ring corresponding to the valve cover.

By adopting the technical scheme, the spring retainer ring can reduce the possibility of looseness of the valve cover and increase the air tightness of the valve.

Optionally, the valve gap is kept away from a side of last valve body and is equipped with a plurality of bracing pieces, and the cladding has the filter screen on the bracing piece, is equipped with the dust cover on the bracing piece, and threaded connection has the fixation nut that can fix the dust cover on the bracing piece.

Through adopting above-mentioned technical scheme, filter screen and dust cover can reduce the impurity in the air and get into the possibility of valve and pipe-line system, reduce the impurity and block up the possibility of valve.

In summary, the present application includes at least one of the following beneficial effects:

1. the compression amount of the spring can be changed by adjusting the position of the adjusting nut, so that the pressure is adjusted, and the valve can be conveniently applied to pipeline systems with different pressures.

2. The compression ring, the sealing ring, the composite gasket, the valve seat and the upper valve body are provided with multiple sealing structures, and the sealing structure is simple in structure and excellent in sealing effect.

3. The abrasion-resistant groove is formed in the movable hole, so that the guiding friction area of the up-and-down movement of the valve clack is reduced, the possibility that the valve cannot return accurately after acting can be reduced, and meanwhile, the inner wall of the movable hole can be prevented from being scratched and seized by hardening.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present application;

reference numerals illustrate:

1. an upper valve body; 2. a lower valve body; 3. a valve seat; 31. a flow passage hole; 32. a movable hole; 4. a valve stem; 5. a valve flap; 6. a spring; 7. adjusting the nut; 8. a cotter pin; 9. an anti-abrasion groove; 10. an air inlet; 11. a limiting block; 12. a cylindrical pin; 13. a compression ring; 14. a seal ring; 15. a composite gasket; 16. a seal ring; 17. a valve cover; 18. a spring retainer ring; 19. a support rod; 20. a filter screen; 21. a dust cover; 22. and (5) fixing a nut.

Detailed Description

Embodiments of the present application are described in further detail below with reference to the accompanying drawings.

This embodiment provides a vacuum break valve, combine fig. 1, including last valve body 1, go up fixedly connected with lower valve body 2 on the valve body 1, go up valve body 1 and keep away from lower valve body 2 one end and offered air inlet 10, go up valve body 1 and be close to lower valve body 2 one end fixedly connected with disk seat 3, be equipped with a plurality of runner holes 31 on the disk seat 3, runner hole 31 is the certain angle setting, be equipped with movable hole 32 on the disk seat 3, wear to establish and sliding connection have valve rod 4 in the movable hole 32, valve rod 4 keeps away from last valve body 1 one end integrated into one piece and has valve clack 5, valve rod 4 is close to valve body 1 one end threaded connection and has adjusting nut 7, adjusting nut 7 is close to valve clack 5 one end fixedly connected with spring 6, spring 6 is located valve rod 4, spring 6 keeps away from adjusting nut 7 one end fixedly connected with disk seat 3, spring 6 can force 5 butt in disk seat 3, wear to be equipped with same split pin 8 on adjusting nut 7 and the valve rod 4, the cover is equipped with stopper 11 on the valve rod 4, stopper 11 sets up between adjusting nut 11 and disk seat 3, wear to be equipped with same cylindric lock 12 on stopper 11 and the valve rod 4, stopper 11 can be in 3, through rotatory adjusting nut 7 one end is close to valve body 1 end, can both be equipped with compression set up with the compression hole of valve seat 9 simultaneously, can be used for the anti-friction seal and anti-friction hole, can be guaranteed, and the anti-friction hole is smooth inner wall 32, can be processed, and the anti-friction hole is well, can be hardened, and the inner wall is movable, can prevent the inner wall of the valve plate has been set up and has been hardened, and can be moved, and can prevent friction and prevent friction hole.

Referring to fig. 1, a pressing ring 13 is fixedly connected to one end of the upper valve body 1, which is close to the lower valve body 2, a side surface of the valve seat 3, which is close to the valve clack 5, is abutted to the pressing ring 13, a sealing ring 14 is embedded in the outer circumferential surface of the valve seat 3, the sealing ring 14 can be abutted to the upper valve body 1, a composite gasket 15 is fixedly connected to the upper valve body 1, a side surface of the valve seat 3, which is far away from the valve clack 5, is abutted to the composite gasket 15, a sealing ring 16 is embedded and fixedly connected to the valve seat 3, which is close to the valve clack 5, the valve clack 5 can be abutted to the sealing ring 16, the pressing ring 13, the sealing ring 14, the composite gasket 15 and the sealing ring 16 are made of soft and hard rubber materials, soft and hard double sealing structures are adopted between the valve seat 3 and the upper valve body 1 and between the valve seat 3 and the valve clack 5, the sealing ratio is low, the sealing effect is superior, and the air tightness of the valve is improved.

In combination with fig. 1, the valve gap 17 is connected with one end of the upper valve body 1 far away from the lower valve body 2 through threads, the air inlet 10 penetrates through the valve gap 17, the spring retainer 18 is sleeved on the upper valve body 1 corresponding to the valve gap 17, the spring retainer 18 can reduce the possibility that the valve gap 17 falls off from the upper valve body 1, a plurality of support rods 19 are fixedly connected to one side surface of the valve gap 17 far away from the upper valve body 1, the same filter screen 20 is coated on the support rods 19, a dust cover 21 is sleeved on one end of the support rods 19 far away from the valve gap 17, the support rods 19 are connected with a fixing nut 22 through threads at one end far away from the valve gap 17, the fixing nut 22 can fix the dust cover 21 on the support rods 19, the dust cover 21 is in a hat shape, the dust cover 21 and the filter screen 20 can reduce the possibility that impurities in air enter the valve, so that the impurities block the valve is reduced, the dust cover 21 is in hat shape can block rainwater, and the possibility that the rainwater flows backward the valve is reduced.

The application method comprises the following steps: according to the pressure of the pipeline system, the adjusting nut 7 is adjusted, the spring 6 is compressed and the valve is made to reach the pressure required by the pipeline system, then the cotter pin 8 is inserted into the valve rod 4 and the adjusting nut 7, so that the adjusting nut 7 is positioned, when negative pressure or vacuum is generated in the pipeline system, the valve clack 5 moves downwards to the valve body 2 under the atmospheric pressure, so that air can enter the pipeline through the runner hole 31, the negative pressure or vacuum in the pipeline is broken, and the pipeline system is prevented from being damaged by the atmospheric pressure.

The foregoing description is only of a preferred embodiment of the present application and is not intended to limit the same, but rather, various modifications and variations are possible in light of the above teachings. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a vacuum breaking valve, includes valve body (1) and lower valve body (2), is equipped with air inlet (10) on last valve body (1), is equipped with disk seat (3) in last valve body (1), has seted up a plurality of runner holes (31) on disk seat (3), is equipped with movable hole (32) on disk seat (3), wears to establish and sliding connection have valve rod (4) on movable hole (32), and valve rod (4) are kept away from last valve body (1) one end and are equipped with valve clack (5), its characterized in that: valve rod (4) are kept away from valve clack (5) one end threaded connection and are had adjusting nut (7), and the cover is equipped with spring (6) on valve rod (4), and spring (6) one end is connected in adjusting nut (7), and spring (6) are kept away from adjusting nut (7) one end and are connected in disk seat (3), and valve clack (5) butt in disk seat (3) are kept away from an upper valve body (1) side, wears to be equipped with same cotter pin (8) on adjusting nut (7) and valve rod (4).

2. A vacuum break valve according to claim 1, characterized in that: the valve rod (4) is sleeved with a limiting block (11), a cylindrical pin (12) is arranged on the limiting block (11) in a penetrating mode, the cylindrical pin (12) is arranged on the valve rod (4) in a penetrating mode, and the limiting block (11) can be abutted to one side face, close to the upper valve body (1), of the valve seat (3).

3. A vacuum break valve according to claim 1, characterized in that: the valve is characterized in that a compression ring (13) is arranged at one end, close to the lower valve body (2), of the upper valve body (1), one side face, close to the valve clack (5), of the valve seat (3) is abutted to the compression ring (13), a sealing ring (14) is embedded in the outer peripheral face of the valve seat (3), the outer peripheral face of the sealing ring (14) is abutted to the upper valve body (1), a composite gasket (15) is arranged on the upper valve body (1), and the composite gasket (15) is abutted to one side face, close to the upper valve body (1), of the valve seat (3).

4. A vacuum break valve according to claim 3 wherein: a sealing ring (16) is embedded on one side surface of the valve seat (3) close to the valve clack (5), and the valve clack (5) is abutted to the sealing ring (16).

5. A vacuum break valve according to claim 1, characterized in that: the runner holes (31) are arranged at a certain angle.

6. A vacuum break valve according to claim 1, characterized in that: the inner wall of the movable hole (32) is provided with an anti-abrasion groove (9), and the inner wall of the movable hole (32) is hardened.

7. A vacuum break valve according to claim 1, characterized in that: the upper valve body (1) is connected with a valve cover (17) through threads, and the upper valve body (1) is provided with a spring retainer ring (18) corresponding to the valve cover (17).

8. A vacuum break valve according to claim 7 wherein: a plurality of support rods (19) are arranged on one side surface, far away from the upper valve body (1), of the valve cover (17), a filter screen (20) is coated on each support rod (19), a dust cover (21) is arranged on each support rod (19), and fixing nuts (22) capable of fixing the dust cover (21) are connected to the support rods (19) in a threaded mode.