CN211203029U

CN211203029U - Air exhaust valve

Info

Publication number: CN211203029U
Application number: CN201921545013.1U
Authority: CN
Inventors: 金顺盛
Original assignee: Zhejiang Alos Valve Co ltd
Current assignee: Zhejiang Alos Valve Co ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-08-07
Anticipated expiration: 2029-09-17

Abstract

The utility model discloses a vent valve, including the valve body, still be equipped with floater and guard shield in the valve pocket, the bottom of valve body is the input port, the guard shield is straight tube-shape setting, and the bottom has the arc structure that arches towards the input port, and its tip is the opening, is equipped with annular flange along being equipped with in open-ended periphery, annular flange is fixed on the inner wall of valve pocket, and the bottom of guard shield is equipped with two water inlets, the water inlet is the axisymmetric setting along the center of guard shield bottom, the opening of water inlet is corresponding in the lateral wall of valve pocket, be equipped with the rubber pad on the inside diapire of guard shield, the thickness of rubber pad is 2cm, and the rubber pad is located between two water inlets, the guard shield is close. After the improvement, the stability of floater when can promoting the motion, the valve can reduce the damage to the floater simultaneously at the during operation, prolongs the working life of valve.

Description

Air exhaust valve

Technical Field

The utility model relates to the technical field of valves, more specifically say, it relates to an exhaust valve.

Background

The exhaust valve is applied to exhaust of pipelines such as an independent heating system, a central heating system, a heating boiler, a central air conditioner, a floor heating system, a solar heating system and the like. When the gas pressure is higher than the system pressure, the gas can lower the water surface in the cavity, the floating ball descends along with the water level, and the exhaust port is opened; after the gas is exhausted, the water level rises, the floating ball also rises, and the exhaust port is closed. The valve cavity of the exhaust valve is internally provided with a protective cover, the center of the bottom of the protective cover is provided with an input port, when the water level rises, water enters the protective cover from the input port to float a floating ball in the protective cover, and the input port corresponds to the bottom of the floating ball, so that the floating ball is easy to damage under the long-term condition. When the water level in the valve cavity is reduced, the floating ball falls on the inner wall of the protective cover and rubs against the inner wall of the protective cover, and the quality and the service life of the floating ball are also influenced. Therefore, the structure of the protective cover is improved, the damage to the floating ball is reduced, and the key problem of prolonging the service life of the valve is solved.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a discharge valve that job stabilization nature is high, long service life.

In order to achieve the above purpose, the utility model provides a following technical scheme: an exhaust valve comprises a valve body, a valve cavity is arranged in the valve body, a top cover is arranged at the top of the valve body, an exhaust port communicated with the valve cavity is arranged on the top cover, the valve cavity is internally provided with a valve clack component which extends to the top cover, the valve cavity is also internally provided with a floating ball and a protective cover, the bottom of the valve body is an input port, the protective cover is arranged in a straight cylinder shape, the bottom of the protective cover is provided with an arc structure which arches towards the input port, the end part of the valve body is an opening, the peripheral edge of the opening is provided with an annular flange which is fixed on the inner wall of the valve cavity, the bottom of the protective cover is provided with two water inlets, the water inlets are axially symmetrically arranged along the center of the bottom of the shield, the openings of the water inlets are positioned on the side wall of the valve cavity and correspond to the side wall of the valve cavity, be equipped with the rubber pad on the diapire of guard shield inside, the thickness of rubber pad is 2cm, and the rubber pad is located between two water inlets, the guard shield is close to one of open-ended and is equipped with four buffering mouths.

The utility model discloses further set up to: the junction of top cap and valve body is equipped with seal assembly, seal assembly includes sealing ring one and sealing ring two, the valve clack subassembly includes the valve rod of transversal curved closing plate of personally submitting and connection closing plate, be equipped with the blow vent that is linked together on valve rod and the closing plate, be equipped with the blast pipe in the blow vent, the blast pipe extends outside the top cap to by being connected with the valve cap.

The utility model discloses further set up to: the exhaust pipe and the vent hole are fixed in a threaded fit mode.

The utility model discloses further set up to: and a sewage draining outlet is arranged at one end of the valve body close to the input port.

The utility model discloses further set up to: and a protective net is arranged at the air outlet of the top cover.

Through adopting above-mentioned technical scheme, improve the position of the mouth of a river on the guard shield for the damage degree to the floater when intaking reduces, and stability during messenger's motion can be higher, installs the rubber pad additional simultaneously, has the effect of buffering to the floater that falls back, avoids the floater to damage. The position of the floating ball is heightened, so that the floating ball can be easily lifted under a low-pressure environment, the working quality of the valve is improved, and the service life of the valve is prolonged.

Drawings

FIG. 1 is a sectional view of the present invention;

fig. 2 is an enlarged view of fig. 1 at a.

1. A valve body; 10. a valve cavity; 11. an input port; 12. a sewage draining outlet; 2. a top cover; 20. an exhaust port; 21. a protective net; 3. a valve flap assembly; 30. a sealing plate; 31. a valve stem; 32. a vent; 33. an exhaust pipe; 4. a floating ball; 5. a shield; 50. an annular flange; 51. a water inlet; 52. a rubber pad; 53. a buffer port; 6. a first sealing ring; 7. a second sealing ring; 8. a bonnet.

Detailed Description

Embodiments of the present invention are further described with reference to fig. 1 to 2.

An exhaust valve comprises a valve body 1, a valve cavity 10 is arranged in the valve body 1, a top cover 2 is arranged at the top of the valve body 1, an exhaust port 20 communicated with the valve cavity 10 is arranged on the top cover 2, a valve clack assembly 3 is arranged in the valve cavity 10, the valve clack assembly 3 extends to the top cover 2, a floating ball 4 and a protective cover 5 are further arranged in the valve cavity 10, an input port 11 is arranged at the bottom of the valve body 1, the protective cover 5 is arranged in a straight cylinder shape, an arc-shaped structure arched towards the input port 11 is arranged at the bottom of the protective cover 10, an opening is formed in the end of the protective cover, an annular flange 50 is arranged on the periphery of the opening, the annular flange 50 is fixed on the inner wall of the valve cavity 10, two water inlets 51 are arranged at the bottom of the protective cover 5 in an axial symmetry manner, the openings of the water inlets 51 correspond to the side wall of, the rubber pad 52 is located between the two water inlets 51, and four buffer ports 53 are arranged at one end of the shield 5 close to the opening.

When the water level in the valve body 1 is lowered, the floating ball 4 falls off the bottom inside the early protection cover 5 and is abutted to the rubber pad 52, and the rubber pad 52 has the function of buffering the impact force generated when the floating ball 4 falls off, so that the floating ball 4 is prevented from being damaged after being abutted to the protection cover 5. After the gas is exhausted, the water level in the valve cavity 10 begins to rise, water enters the valve cavity 10 from the input port 11 and then enters the shield 5 from the water inlet 51 of the shield 5, and the water inlet 51 of the shield 5 is arranged on two sides of the bottom, so that the floating ball 4 is prevented from being directly impacted by the inflow water and damaged by the floating ball 4. Simultaneously two water inlets 51 can promote the efficiency of intaking, can also promote the stability that floater 4 rises.

The rubber pad 52 can also raise the position height of the floating ball 4 at the bottom of the shield 5, so that the floating ball 4 is easily raised under the condition of low pressure in the valve cavity 10 after the water level rises, and the working efficiency is improved.

Set up buffering mouth 53 on the guard shield 5, when floater 4 rose, atmospheric pressure can produce great impact force to top cap 2, and buffering mouth 53 can discharge partial atmospheric pressure to the lateral wall of valve pocket 10, reduces the atmospheric pressure to top cap 2 part, can play like this and prevent that top cap 2 from receiving to strike too big and take place the problem of lifting, promotes the security performance.

The junction of top cap 2 and valve body 1 is equipped with seal assembly, seal assembly includes sealing ring 6 and two 7 of sealing ring, valve clack subassembly 3 includes that the transversal curved closing plate 30 of personally submitting and the valve rod 31 of connecting closing plate 30, be equipped with the blow vent 32 that is linked together on valve rod 31 and the closing plate 30, be equipped with blast pipe 33 in the blow vent 32, outside blast pipe 33 extended to top cap 2 to by being connected with valve cap 8. The exhaust pipe 33 and the vent hole 32 are fixed by screw-fitting.

The double sealing structure arrangement of the first sealing ring 6 and the second sealing ring 7 can improve the sealing performance between the sealing plate 30 and the top cover 2. The exhaust pipe 33 is fixed with the vent hole 32 in a threaded fit mode, so that the exhaust pipe and the vent hole can be detached, and replacement and maintenance are convenient.

A sewage draining outlet 12 is arranged at one end of the valve body 1 close to the input port 11. After long-term use, impurities can be accumulated in the valve cavity 10 and can be cleaned in time through the sewage draining outlet 12, so that the valve is protected.

A protective net 21 is arranged at the air outlet 20 of the top cover 2. The protection net 21 serves to prevent foreign materials from entering the valve body 1.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an exhaust valve, includes the valve body, the valve pocket has in the valve body, and the top of valve body is equipped with the top cap, is equipped with the gas vent that is linked together with the valve pocket on the top cap, be equipped with the valve clack subassembly in the valve pocket, the valve clack subassembly extends to the top cap, still is equipped with floater and guard shield in the valve pocket, and the bottom of valve body is input port, its characterized in that: the utility model discloses a water inlet, including guard shield, water inlet, water outlet, guard shield, water inlet, guard shield, water inlet, water outlet, the guard shield is straight tube-shape setting, and the bottom has the arc structure that arches towards the input port, and its tip is the opening, is equipped with the annular flange at open-ended periphery edge, the annular flange is fixed on the inner wall of valve pocket, and the bottom of guard shield is equipped with two water inlets, the water inlet is axisymmetric setting along the center of guard shield bottom, the opening of water inlet is in that the lateral wall of valve pocket is corresponding, be equipped.

2. A vent valve according to claim 1, wherein: the junction of top cap and valve body is equipped with seal assembly, seal assembly includes sealing ring one and sealing ring two, the valve clack subassembly includes the valve rod of transversal curved closing plate of personally submitting and connection closing plate, be equipped with the blow vent that is linked together on valve rod and the closing plate, be equipped with the blast pipe in the blow vent, the blast pipe extends outside the top cap to by being connected with the valve cap.

3. A vent valve according to claim 2, wherein: the exhaust pipe and the vent hole are fixed in a threaded fit mode.

4. A vent valve according to claim 1, wherein: and a sewage draining outlet is arranged at one end of the valve body close to the input port.

5. A vent valve according to claim 1, wherein: and a protective net is arranged at the air outlet of the top cover.