CN220102248U

CN220102248U - High-pressure air valve

Info

Publication number: CN220102248U
Application number: CN202321435802.6U
Authority: CN
Inventors: 廖芝金; 陈乙飞; 佘导演
Original assignee: Anhui Redstar Valve Co Ltd
Current assignee: Anhui Redstar Valve Co Ltd
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2023-11-28
Anticipated expiration: 2033-06-06

Abstract

The utility model relates to a high-pressure air valve, which relates to the field of air valves and aims at solving the problems of complex structure and low installation efficiency of the existing air valves. The utility model has the advantages that when water enters the valve body, the pontoon floats on the water surface and rises along with the rising of the water surface, so as to drive the valve clack to rise, the valve clack contacts with the central hole and then seals the central hole, the sealing element is positioned between the valve clack and the central hole, the tightness between the valve clack and the center is improved, a plurality of sealing rings are not required to be arranged on the valve clack and the valve cover, the structure is simple, and the installation efficiency of the air valve is improved.

Description

High-pressure air valve

Technical Field

The utility model belongs to the field of air valves, and in particular relates to a high-pressure air valve.

Background

The air valves on the high points of the pressure water tanks of the pump stations and the water pipes are used for discharging air in the water pipes outwards when the water pipes are filled with water after the water pipes are regularly overhauled, so that pressure fluctuation is avoided; when the water hammer is generated in the water pipe and negative pressure is generated, the air valve is opened, so that air outside the pipe enters the pipe, and the pipe is prevented from generating larger negative pressure, so that a protection effect is achieved; when the pipeline system runs, when air dissolved in water is released due to pressure or temperature change in the pipeline, the air valve discharges the air in time, so that the air bag is prevented from being formed in the pipeline to influence the running of the pipeline system.

The utility model of China with the application number of 201820674552.4 discloses an air valve, which comprises a lower valve body, an upper valve body, a valve cover, a plurality of exhaust holes, a valve cover and a valve cover, wherein the upper valve body is covered on the lower valve body, the valve cover extends from the upper valve body, the side wall of the upper end of the valve cover is provided with a plurality of exhaust holes, and the bottom of the valve cover is connected to a valve cover through screws; the middle part of the upper valve body is provided with a valve, a pontoon is arranged in a cavity of the lower valve body, one end of the pontoon is connected with a valve shaft of which the other end penetrates through the upper valve body and extends to a valve cover cavity, a metal sealing ring is fixedly arranged on the pontoon through a screw, a sealing ring matched with the metal sealing ring is arranged at the position, close to the valve, of the upper valve body, and a soft sealing ring is fixedly arranged on the metal sealing ring through a pressing plate; the valve shaft is provided with an elastic device which can enable the pontoon to move up and down at the extension part of the outer side of the upper valve body.

The following problems exist in the related art: in order to enable the pontoon to be capable of better closing the valve after rising, a plurality of groups of sealing rings are arranged on the pontoon and the upper valve body, but the structure is complex, and the installation efficiency is lower.

Disclosure of Invention

In order to improve the installation efficiency of the installation valve, the utility model provides a high-pressure air valve.

The utility model provides a high-pressure air valve which adopts the following technical scheme:

the utility model provides a high-pressure air valve, includes valve body, valve gap to and set up the case subassembly on the valve gap, set up the centre bore with external intercommunication on the valve gap, the case subassembly runs through the centre bore extends to the valve gap both sides, the case subassembly includes integrated into one piece's valve clack and flotation pontoon, be provided with the sealing member between valve clack and the centre bore.

Through adopting above-mentioned technical scheme, in water gets into the valve body, the flotation pontoon floats in the surface of water and rises along with the surface of water rises to drive the valve clack and rise, the valve clack is plugged with the centre bore after contacting with the centre bore, and the sealing member is located between valve clack and the centre bore, improves the leakproofness between valve clack and the centre, need not all to be provided with a plurality of sealing washer on valve clack and the valve gap, simple structure improves the installation effectiveness of this air valve.

As a further preferred feature, the seal comprises a valve seat seal ring, a valve seat is disposed inside the central bore of the valve cover, and the valve seat seal ring is disposed between the valve seat and the valve cover.

Through adopting above-mentioned technical scheme, the installation disk seat can be fixed the disk seat sealing washer, makes disk seat sealing washer installation more stable, and the disk seat sealing washer sets up between disk seat and valve gap simultaneously, improves the leakproofness between disk seat and the valve gap.

As a further preference, the lower end of the valve seat seal extends below the valve seat.

Through adopting above-mentioned technical scheme, valve clack come-up back contact disk seat sealing washer to improve the leakproofness between valve clack and the disk seat, avoid the centre bore to close the back water leakage, and with pressure increase, valve clack compression disk seat sealing washer, then disk seat plane contact, area of contact pressing pressure size increases and decreases to some extent, and ensures to be less than the allowable specific pressure of material far away, the disk seat sealing washer outside, bears the pressure of medium, the disk seat sealing washer receives the extrusion, pastes disk seat and valve clack more tightly, and more seals.

As a further preferred aspect, the valve core assembly further includes a valve shaft, a spring and a spring cover, the valve shaft is disposed on the valve clack, the valve shaft penetrates through the valve cover to extend to the outside of the valve cover, the spring cover is disposed on the valve shaft outside the valve cover, the spring is fixedly connected between the spring cover and the valve cover, and the valve clack is separated from the valve seat in a natural state.

Through adopting above-mentioned technical scheme, when water pipe fills, the valve clack is located the lower part, and the air in the pipeline can be discharged through the centre bore, is full of behind the water in the valve pocket, and the valve clack closes the centre bore under buoyancy effect, prevents the discharge of water, realizes closing of air valve through the buoyancy of water, and the structure is ingenious, and the result of use is better.

As a further preferred aspect, the valve core assembly further includes a nut that is threadedly engaged with the valve shaft, and the nut and the spring cover abut against each other.

Through adopting above-mentioned technical scheme, rotate nut and adjust its position on the valve shaft to can adjust the spring force of spring, make spring and valve clack dead weight form balance, thereby make the buoyancy of water can more accurate control the rising and the decline of valve clack, realize opening and closing of air valve.

As further preferable, the valve cover is detachably connected with a filter screen and a positioning connection assembly, and the filter screen is sleeved outside the valve core assembly; the positioning connection assembly comprises a protective cover and a connecting piece, wherein the protective cover is sleeved on the top of the filter screen, and the connecting piece is used for fixing the protective cover on the valve cover.

Through adopting above-mentioned technical scheme, the filter screen is installed and is protected the case subassembly on the valve gap, avoids the object to get into in the valve body simultaneously, when installing the filter screen, locates the one end of filter screen with the protective cover, rethread connecting piece with safety cover fixed connection on the valve gap to accomplish the fixed mounting of filter screen simultaneously, and the protective cover protects the top of filter screen, and the connecting piece plays the effect of support, and then improves the intensity after the filter screen installation, is difficult for taking place to warp the damage.

As a further preferable mode, the connecting piece comprises a plurality of screws and nuts, the screws are in threaded connection with the valve cover, the screws are arranged in parallel with the central axis of the valve cover, a plurality of through holes for the screws to penetrate are formed in the protective cover, and the nuts are in threaded connection with the screws for adaptation.

Through adopting above-mentioned technical scheme, rotate the screw rod and install it on the valve gap, install filter screen and safety cover again, make the screw rod pass the perforation on the safety cover, make the mounted position of filter screen fixed, be connected the nut with the screw rod again, accomplish the installation of filter screen, mounting structure is simple, improves installation effectiveness.

As a further preferable mode, the filter screen is sleeved outside the screw rods, the inner wall of the filter screen is attached to the outer wall of the screw rods, and the outer wall of the filter screen is attached to the inner wall of the protective cover.

Through adopting above-mentioned technical scheme, after the filter screen installation, the inner wall of filter screen is supported to the screw rod, and the safety cover protects the outside of filter screen, makes the stability after the filter screen installation better, and is difficult for causing deformation damage.

As a further preferable mode, the valve cover and the valve body are respectively provided with a corresponding mounting hole, bolts for connecting the valve cover and the valve body are arranged in the mounting holes, a sealing ring is arranged between the valve cover and the valve body, and a placing groove for placing the sealing ring is formed in the valve body.

Through adopting above-mentioned technical scheme, when being connected valve gap and valve body, pass the mounting hole on valve gap and the valve body with the bolt, the sealing ring improves the leakproofness between valve gap and the valve body, and the sealing ring sets up in the standing groove, and the position is more stable, realizes better sealed effect.

As a further preferable mode, the valve body is provided with an exhaust hole communicated with the valve cavity inside the valve body, and a plugging piece is arranged at the exhaust hole.

By adopting the technical scheme, when the air valve is overhauled, the valve is closed, the plugging piece at the exhaust hole is taken down, the pressure in the valve cavity is removed, and the overhauling is convenient.

In summary, the utility model has at least the following beneficial technical effects:

1. when water enters the valve body, the pontoon floats on the water surface and rises along with the rising of the water surface, so that the valve clack is driven to rise, the valve clack is contacted with the central hole to plug the central hole, the sealing element is positioned between the valve clack and the central hole, the tightness between the valve clack and the center is improved, a plurality of sealing rings are not required to be arranged on the valve clack and the valve cover, the structure is simple, and the installation efficiency of the air valve is improved;

2. when the filter screen is installed, the protective cover is sleeved at one end of the filter screen, and the protective cover is fixedly connected to the valve cover through the connecting piece, so that the fixed installation of the filter screen is completed simultaneously, the top of the filter screen is protected by the protective cover, the connecting piece plays a supporting role, the strength of the filter screen after being installed is improved, and deformation and damage are not easy to occur;

3. when the water pipe fills water, the valve clack is positioned at the lower part, air in the pipe can be discharged through the central hole, after the valve cavity is filled with water, the valve clack closes the central hole under the action of buoyancy force to prevent water from being discharged, at the moment, the spring is in an extension state, the air valve is closed through the buoyancy force of the water, and the position of the spring on the valve shaft is adjusted through rotating the nut, so that the spring force of the spring can be adjusted, the spring and the dead weight of the valve clack form balance, and the buoyancy force of the water can more accurately control the rising and the falling of the valve clack.

Drawings

FIG. 1 is a schematic elevational view of an embodiment of the present utility model;

FIG. 2 is a schematic side view of an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view taken along line A-A in FIG. 2;

FIG. 4 is an enlarged schematic view of the portion B of FIG. 3;

fig. 5 is a schematic top view of an embodiment of the present utility model.

The same reference numbers are used throughout the drawings to reference like elements or structures, wherein:

1. a valve body; 11. a mounting hole; 12. a bolt; 13. a seal ring; 14. a placement groove; 15. an exhaust hole; 16. a blocking member; 2. a valve cover; 21. a central bore; 3. a valve core assembly; 31. a valve flap; 32. a valve shaft; 33. a spring; 34. a spring cover; 35. a nut; 4. a filter screen; 5. positioning the connecting component; 51. a protective cover; 511. perforating; 52. a connecting piece; 521. a screw; 522. a screw cap; 6. a valve seat; 61. and a valve seat sealing ring.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The utility model is described in further detail below with reference to fig. 1-5.

The embodiment of the utility model discloses a high-pressure air valve.

The high-pressure air valve comprises a valve body 1, a valve cover 2, a valve core assembly 3, a filter screen 4, a positioning connection assembly 5 and a valve seat 6, wherein a valve cavity is formed inside after the valve body 1 and the valve cover 2 are connected, the valve core assembly 3 is arranged on the valve cover 2, the valve core assembly 3 penetrates through the valve cover 2 to extend to two sides of the valve cover 2, the filter screen 4 is detachably connected to one side, far away from the valve body 1, of the valve cover 2, the filter screen 4 is fixed on the valve cover 2 through the positioning connection assembly 5, the installation strength of the filter screen 4 is improved, a central hole 21 communicated with the outside is formed in the central position of the valve cover 2, and the valve seat 6 is arranged on the inner side of the central hole 21 of the valve cover 2 and is matched with the valve core assembly 3 to control the opening and closing of the central hole 21.

Referring to fig. 3, in this embodiment, in order to realize connection between the valve body 1 and the valve cover 2, corresponding mounting holes 11 are formed in the valve cover 2 and the valve body 1, bolts 12 are disposed in the mounting holes 11, and the valve cover 2 and the valve body 1 are fixedly connected through the bolts 12; meanwhile, in order to improve the tightness of the connection between the valve body 1 and the valve cover 2, one side of the valve body 1, which is close to the valve cover 2, is provided with an annular placing groove 14, a sealing ring 13 is arranged in the placing groove 14, and after the valve body 1 is connected with the valve cover 2, the connection joint between the valve body 1 and the valve cover 2 is sealed through the sealing ring 13;

the valve body 1 and the valve cover 2 after connection are convenient to transport and take, and hanging rings are fixedly connected to symmetrical positions on two sides of the valve cover 2 so as to facilitate hanging, placing and transporting.

Referring to fig. 3, in order to control the opening and closing of the air valve, the valve core assembly 3 comprises a valve clack 31, a pontoon, a valve shaft 32, a spring 33, a spring cover 34 and a nut 35, wherein the valve clack 31 and the pontoon are integrally formed, the valve shaft 32 is integrally formed and connected to the valve clack 31, the valve shaft 32 penetrates through the valve cover 2 to extend to the outside of the valve cover 2, the valve clack 31 is positioned in the valve cavity, the bottom of the pontoon is provided with a groove, when the pontoon is pushed to float upwards by water in the valve body 1, air exists in the groove, so that the pontoon can float upwards well, the pontoon structure can bear high pressure and cannot be damaged by high-pressure extrusion deformation, and the air valve is suitable for a high-pressure environment;

the spring cover 34 is sleeved on the valve shaft 32 and slides along the axial direction of the valve shaft 32, the spring 33 is sleeved on the valve shaft 32 and fixedly connected with the spring cover 34 and the valve cover 2, the valve clack 31 is separated from the valve seat 6 in a natural state of the spring 33, when the water pipe is filled with water, the valve clack 31 is positioned at the lower part, air in the pipe can be discharged through the central hole 21, and after the valve cavity is filled with water, the valve clack 31 is contacted with the valve seat 6 under the action of buoyancy force to close the central hole 21, so that the water is prevented from being discharged;

referring to fig. 3 and 4, in order to improve the tightness between the valve clack 31 and the valve cover 2, a sealing element is arranged between the valve clack 31 and the central hole 21, the sealing element comprises a valve seat sealing ring 61, a valve seat 6 is arranged on the inner side of the central hole 21 of the valve cover 2, an installation groove for installing the valve seat 6 is formed in the valve cover 2, an oblique angle is formed on the periphery of the installation groove, the valve seat 6 is convenient to install, the valve seat 6 is connected with the valve seat 6 through a screw penetrating through the valve cover 2, the valve seat sealing ring 61 is arranged between the valve seat 6 and the valve cover 2, the valve seat 6 is installed to fix the valve seat sealing ring 61, the valve seat sealing ring 61 is arranged between the valve seat 6 and the valve cover 2, the tightness between the valve seat 6 and the valve cover 2 is improved, and after the central hole 21 on the valve cover 2 is closed, water in the valve cavity cannot leak from a gap between the valve seat 6 and the valve cover 2; the lower end of the valve seat sealing ring 61 extends to the lower part of the valve seat 6, and the valve clack 31 floats upwards to contact the valve seat sealing ring 61, so that the tightness between the valve clack 31 and the valve seat 6 is improved;

when the valve clack 31 rises, the valve seat sealing ring 61 is contacted firstly, then the valve clack 31 compresses the valve seat sealing ring 61 along with the pressure increase, then the valve seat 6 is contacted, the contact area is increased or decreased according to the pressure, the outer side of the valve seat sealing ring 61 bears the pressure of a medium, the valve seat sealing ring 61 is extruded, and the valve seat 6 and the valve clack 31 are more tightly attached, so that the sealing effect is improved.

The nut 35 is provided with two sets of, and nut 35 and valve shaft 32 threaded connection adaptation, the mutual butt between nut 35 and the spring cover 34 of below, rotates the position of nut 35 on valve shaft 32 to can adjust the spring force of spring 33, make spring force and valve clack 31, valve shaft 32 dead weight form the balance, thereby make the buoyancy of water can more accurate control the rising and the decline of valve clack 31, and the top of valve shaft 32 sets up the cotter pin, prevents that nut 35 from droing.

Referring to fig. 3, in order to facilitate overhauling of the air valve, the valve body 1 is provided with an exhaust hole 15 communicated with the valve cavity, a sealing piece 16 for opening or closing the exhaust hole 15 is arranged at the exhaust hole 15, when overhauling of the air valve is performed, the valve is closed, the sealing piece 16 at the exhaust hole 15 is taken down, and the pressure in the valve cavity is eliminated.

Referring to fig. 3, in order to improve the installation stability and the installation strength of the filter screen 4, the positioning connection assembly 5 includes a protection cover 51 and a connection piece 52, and after the protection cover 51 is sleeved on the top of the filter screen 4, the protection cover 51 is coaxially fixed on the valve cover 2 through the connection piece 52; specifically, the connecting piece 52 includes a plurality of screws 521 and nuts 522, the screws 521 are first screwed on the valve cover 2, the screws 521 are parallel to the central axis of the valve cover 2, the filter screen 4 is installed and sleeved outside the screws 521, the inner wall of the filter screen 4 is attached to the outer wall of the screws 521, the outer wall of the filter screen 4 is attached to the inner wall of the protective cover 51, the screws 521 support and strengthen the protective cover 51, a plurality of through holes 511 for the screws 521 to penetrate are formed in the protective cover 51, the nuts 522 are adapted to the screws 521 in a screwed connection manner, and the nuts 522 are connected after the through holes 511 are penetrated by the screws 521, so that the filter screen 4 and the protective cover 51 are fixed.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. A high pressure air valve, characterized by: including valve body (1), valve gap (2) to and valve core subassembly (3) of setting on valve gap (2), set up on valve gap (2) with external intercommunication centre bore (21), valve core subassembly (3) run through centre bore (21) extend to valve gap (2) both sides, valve core subassembly (3) are including integrated into one piece's valve clack (31) and flotation pontoon, be provided with the sealing member between valve clack (31) and centre bore (21).

2. The high pressure air valve of claim 1, wherein: the sealing element comprises a valve seat sealing ring (61), a valve seat (6) is arranged on the inner side of the central hole (21) of the valve cover (2), and the valve seat sealing ring (61) is arranged between the valve seat (6) and the valve cover (2).

3. The high pressure air valve of claim 2, wherein: the lower end of the valve seat sealing ring (61) extends to the lower part of the valve seat (6).

4. The high pressure air valve of claim 2, wherein: the valve core assembly (3) further comprises a valve shaft (32), a spring (33) and a spring cover (34), wherein the valve shaft (32) is arranged on the valve clack (31), the valve shaft (32) penetrates through the valve cover (2) to extend to the outside of the valve cover (2), the spring cover (34) is arranged on the valve shaft (32) outside the valve cover (2), the spring (33) is fixedly connected between the spring cover (34) and the valve cover (2), and the valve clack (31) is separated from the valve seat (6) under a natural state.

5. The high pressure air valve of claim 4, wherein: the valve core assembly (3) further comprises a nut (35), the nut (35) is in threaded connection fit with the valve shaft (32), and the nut (35) and the spring cover (34) are mutually abutted.

6. The high pressure air valve of claim 1, wherein: the valve cover (2) is detachably connected with a filter screen (4) and a positioning connection assembly (5), and the filter screen (4) is sleeved outside the valve core assembly (3); the positioning connection assembly (5) comprises a protection cover (51) and a connection piece (52), the protection cover (51) is sleeved on the top of the filter screen (4), and the connection piece (52) is used for fixing the protection cover (51) on the valve cover (2).

7. The high pressure air valve of claim 6, wherein: the connecting piece (52) comprises a plurality of screws (521) and nuts (522), the screws (521) are in threaded connection with the valve cover (2), the screws (521) are arranged in parallel with the central axis of the valve cover (2), a plurality of through holes (511) for the screws (521) to penetrate are formed in the protective cover (51), and the nuts (522) are in threaded connection with and fit with the screws (521).

8. The high pressure air valve of claim 7, wherein: the filter screen (4) is sleeved outside the screw rods (521), the inner wall of the filter screen (4) is attached to the outer wall of the screw rods (521), and the outer wall of the filter screen (4) is attached to the inner wall of the protective cover (51).

9. The high pressure air valve of claim 1, wherein: corresponding mounting holes (11) are formed in the valve cover (2) and the valve body (1), bolts (12) used for connecting the valve cover (2) and the valve body (1) are arranged in the mounting holes (11), a sealing ring (13) is arranged between the valve cover (2) and the valve body (1), and a placing groove (14) used for placing the sealing ring (13) is formed in the valve body (1).

10. The high pressure air valve of claim 1, wherein: an exhaust hole (15) communicated with the valve cavity inside the valve body (1) is formed in the valve body (1), and a sealing piece (16) is arranged at the exhaust hole (15).