CN216201037U

CN216201037U - Antiseized air valve of preventing leaking

Info

Publication number: CN216201037U
Application number: CN202122622700.2U
Authority: CN
Inventors: 殷江武
Original assignee: Suzhou Juhan Valve Co ltd
Current assignee: Suzhou Juhan Valve Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-05
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses an anti-sticking and anti-leakage air valve in the technical field of air valves, which comprises a valve body, a valve cover, a floating ball protecting cylinder, a sealing ring, a protective net, an exhaust hood, a micro exhaust assembly and a sewage discharge assembly, wherein a buffer plug is arranged at the bottom of the protecting cylinder and is coaxial with a valve cavity, the protecting cylinder is arranged in the valve cavity and is coaxial with the valve body, the protecting cylinder is formed by welding a circular flat plate and a steel plate, the floating ball is arranged in the protecting cylinder and is coaxial with the protecting cylinder, the floating ball is formed by welding a stainless steel spherical surface and a steel pipe, the outer side of the top of the floating ball is welded with a steel pipe, the sealing ring is arranged in a groove of the valve cover and is coaxial with the valve cover, and the sealing ring and the top of the floating ball form plane sealing. The floating ball can be guaranteed to rise to the correct sealing position and cannot cause leakage after gas is exhausted no matter in a high-pressure or low-pressure state, and the problem that the floating ball cannot fall to the correct position and cannot smoothly enter and exhaust due to the fact that the sealing ring and the floating ball are bonded after long-term use can be solved.

Description

Antiseized air valve of preventing leaking

Technical Field

The utility model relates to the technical field of air valves, in particular to an anti-sticking and anti-leakage air valve which is used for automatically sucking and exhausting air.

Background

In the prior art, the air valve has the structural form: the sealing washer is installed in valve body gas vent position, and it is the sphere to follow floater or sealed ring contact position, and the form of guiding axle about the floater device is ball or drum increase mostly, and the guiding axle of floater upper end passes through the guide way in the valve gap, and the guiding axle of floater lower extreme passes through the guide way of outside protective barrel, has following shortcoming:

(1) the difference between the internal pressure and the external pressure of the upper guide rod and the lower guide rod is large, so that the flowing resistance of a medium is increased, and the working state of the air valve is not ideal;

(2) the conventional protective cylinder can reduce the gas overflow area in the rising process of the floating ball, reduce the air suction and exhaust amount of the air valve, cause a large amount of air which is not exhausted in the valve body after the floating ball rises and is closed, and can not meet the high-speed exhaust standard;

(3) the conventional air valve is sealed in a spherical surface mode, the contact annular area between the sealing ring and the surface of the floating ball is large, the sealing can be ensured to be watertight only by enough buoyancy in a low-pressure state, the floating ball is too large, the inner cavity of the valve body is required to be large, the production cost is high, and the requirement on the manufacturing accuracy of the floating ball is correspondingly improved;

(4) after the sealing ring is used for a long time, the sealing ring is aged and fails in performance, and because the traditional air valve sealing mode adopts spherical surface sealing, the floating ball is bonded with the sealing ring after a period of time, the floating ball cannot be lifted normally, and the functions of exhausting and sucking air cannot be realized;

(5) the floating ball is additionally provided with the upper guide shaft and the lower guide shaft, the manufacturing process is complex, the overall strength of the floating ball device can be influenced, the corresponding valve cover is fixed by additionally arranging the guide port, and the process is complex and high in cost. To this end, we propose an anti-sticking and leak-proof air valve.

Disclosure of Invention

The utility model aims to provide an anti-sticking and anti-leakage air valve which is simple in structure and novel and reasonable in design and can effectively solve the problems that in the existing air valve structure, a sealing mode adopts spherical sealing, a floating ball is bonded with a sealing ring after a period of time, the floating ball cannot be lifted normally, and the functions of exhausting and sucking cannot be realized. The floater intensity is enough, and the suction and exhaust in-process passageway is smooth and easy, and the leakproofness is good between each part, is in under low pressure and the high pressure state, all uses safe and reliable.

In order to achieve the purpose, the utility model provides the following technical scheme: an air valve of antiseized preventing leaking which characterized in that: comprises a valve body, a valve cover, a floating ball device, a protective cylinder, a sealing ring, a protective net, an exhaust hood, a micro exhaust assembly and a sewage discharge assembly, wherein the valve body comprises a medium inlet, a medium outlet, a sewage discharge outlet, a micro exhaust port and a valve cavity, the axial direction of the medium inlet is coincident with the axial direction of the medium outlet, the valve cavity is positioned between the medium inlet and the medium outlet, the drift diameter of the valve cavity is larger than that of the medium inlet, the drift diameter of the medium inlet is equal to that of the medium outlet, the valve cover and the medium inlet are coaxial, the protective cylinder is arranged in the valve cavity and coaxial with the valve body, the outlet end of the valve body is provided with a groove, the protective cylinder is arranged on the groove at the outlet end and is formed by welding a circular flat plate and a steel plate, the height of the circular flat plate is lower than the medium outlet plane of the valve body, the thickness of the circular flat plate is equal to the depth of the groove at the outlet end of the valve body, the protective cylinder and the valve cover are coaxial, and the protective net is preferably arranged between the exhaust hood and the valve cover.

Preferably, a plane sealing ring with a spigot is arranged between the bottom of the valve cover and the upper part of the valve body, and an embedded groove for placing the sealing ring is formed in the bottom of the valve cover.

Preferably, a seam allowance is arranged between the valve body and the valve cover, a notch is formed in the valve body, a convex opening is formed in the valve cover, and the valve body is fixedly connected with the valve cover through a first screw.

Preferably, the inner and outer surfaces of the valve body and the valve cover are covered with epoxy resin coatings.

Preferably, the micro exhaust assembly is connected with the valve body through conical threads, and the sewage discharge assembly is connected with the valve body through conical threads.

Preferably, the protective cylinder is formed by welding a circular flat plate and a steel plate, and the exhaust hood is fixedly connected with the valve cover through a first bolt and a first nut.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model has reasonable structural design, simple structure, novel design and convenient manufacture and use;

2. the floating ball device is welded by the common steel pipe and the partial ball body, so that the manufacturing and processing difficulty of the floating ball device is reduced, and the manufacturing and processing cost is reduced;

3. the ball float device adopts a spherical structure without an upper guide shaft and a lower guide shaft, so that the sealing performance is more reliable under the condition of closing under the condition of meeting the requirement of the flow area, and the leakage condition is less likely to occur;

4. because the floating ball device adopts a spherical structure without an upper guide shaft and a lower guide shaft, the resistance in the working process is reduced, and meanwhile, the buffer plate at the bottom of the valve body can be provided with a larger flow area, which is beneficial to high-speed air suction and exhaust of the valve in the working process;

5. the utility model adopts the plane sealing structure, reduces the sealing contact area, ensures that the phenomenon of bonding the floating ball and the sealing ring can not occur after long-term use to cause failure, also ensures the smoothness of the overflowing channel of the inner cavity of the valve body in the working process, and can better and more quickly evacuate the gas in the pipeline.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention in an open state.

Fig. 2 is a schematic view of the overall structure of the present invention in a closed state.

In the figure: the device comprises a valve body 1, a buffer pad 2, a floating ball 3, a protective cylinder 4, a sealing ring 5, a cover plate 6, an insect-proof net 7, a top plate 8, a B1 pollution discharge assembly, a first bolt B2, a first bolt B3, a first nut B4, a micro-exhaust valve B5, a ball valve B6, a connecting pipe B7 and a T1 nameplate.

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.

Referring to fig. 1, the present invention provides a technical solution: an air valve of antiseized preventing leaking which characterized in that: the device comprises a valve body 1, a valve cover 6, a floating ball device 3, a protective cylinder 4, a sealing ring 5, a protective net 7, an exhaust hood 8, a micro exhaust component B5, B6, B7 and a sewage discharge component B1, wherein the valve body 1 comprises a medium inlet, a medium outlet, a sewage discharge port, a micro exhaust port and a valve cavity, the axial direction of the medium inlet is coincident with the axial direction of the medium outlet, the valve cavity is positioned between the medium inlet and the medium outlet, the through diameter of the valve cavity is larger than the through diameter of the medium inlet, the through diameter of the medium inlet is equal to the through diameter of the medium outlet, the valve cover 6 is coaxial with the medium inlet, the protective cylinder 4 is arranged in the valve cavity, the protective cylinder 4 is coaxial with the valve body 1, the outlet end of the valve body 1 is provided with a groove, the protective cylinder 4 is arranged on the groove of the outlet end, the protective cylinder 4 is formed by welding a circular flat plate and a steel plate, the height of the circular flat plate is lower than the medium outlet plane of the valve body, and the thickness is equal to the depth of the groove of the outlet end of the valve body 1, the protective cylinder 4 and the valve cover 6 are coaxial, and the protective net 7 is positioned between the exhaust hood 8 and the valve cover 6.

A plane sealing ring 5 with a spigot is arranged between the bottom of the valve cover 6 and the upper part of the valve body 1, and an embedded groove for placing the sealing ring 5 is arranged at the bottom of the valve cover 6.

A spigot is arranged between the valve body 1 and the valve cover 6, a notch is arranged on the valve body 1, a convex opening is arranged on the valve cover 6, and the valve body 1 and the valve cover 6 are fixedly connected through a first screw B2.

The inner and outer surfaces of the valve body 1 and the valve cover 6 are covered with epoxy resin coatings.

The micro exhaust assemblies B5, B6 and B7 are connected with the valve body 1 through taper threads, and the pollution discharge assembly B1 is connected with the valve body 1 through taper threads.

The protective cylinder 4 is formed by welding a circular flat plate and a steel plate, and the exhaust hood 8 is fixedly connected with the valve cover 6 through a first bolt B3 and a first nut B4.

The working principle is as follows: when the device is used, the device can be divided into five working states, namely a valve initial state, a high-speed exhaust state, a valve closing and sealing state, a micro-exhaust state and a negative pressure air suction state, and the specific working conditions are as follows:

initial state of the valve: the floating ball 3 of the air valve is positioned in the protective cylinder 4, the sealing surface of the floating ball 3 faces upwards, the floating ball 3 can move up and down without hindrance along the interior of the protective cylinder 4 and with stroke limitation under the action of the upward force in the vertical direction, and an exhaust passage between the floating ball 3 and the cavity of the valve body 1 is in a maximum flow area state.

A high-speed exhaust state: when the pipeline is flushed with water and exhausted, high-speed airflow enters the valve body 1 through the lower inlet of the valve body 1, enters the upper part of the valve body 1 along the annular overflowing surface between the valve body 1 and the floating ball 3, and is exhausted into the atmosphere through the overflowing area between the protective screen 7 and the exhaust hood 8.

Valve closing and sealing state: when the gas in the pipeline is basically exhausted, the water level rises and enters the inner cavity of the valve body 1, the floating ball 3 floats upwards (is lighter than water) and contacts with the sealing ring 5 on the valve cover 6 to form the sealing of the exhaust port, the specific sealing pressure of the sealing part is increased along with the rise of the water pressure in the valve body 1, the valve is closed, and water and the gas cannot be exhausted through the valve.

A micro exhaust state: after the valve is closed, when gas is separated out from the pipeline, the gas is gradually gathered in the valve body 1, when the gathered gas is increased and the gas pressure is increased to be higher than the pressure of water, the gas pressure keeps the sealing state of the exhaust port on one hand, on the other hand, the water level submerging the floating ball 3 is lowered, the floating ball 3 falls down to open the micro exhaust port of the micro exhaust assembly B5 and start micro exhaust, and as the micro exhaust progresses, the gas pressure gathered at the position is reduced along with the decrease of the gas pressure and the water level rises and the floating ball 3 seals the valve seat of the micro exhaust valve B5 along with the rise of the water level, so the valve seat can enable the gas to be exhausted through the micro exhaust assemblies B5, B6 and B7, but the water cannot, the functions of exhausting with gas, closing after exhausting, exhausting with interval exhausting, exhausting with exhausting, only exhausting and without exhausting water, and the like are realized, and the gas appearing in the pipeline can be exhausted to the maximum.

When the pipeline is in a negative pressure state due to pump stop and drainage emptying, the water level is reduced, the external air pressure is greater than the water pressure of the pipeline, the floating ball 3 falls due to the reduction of the water pressure and the water level by the external air, the exhaust port is opened, and a large amount of external air can be immediately sucked to eliminate the vacuum of the pipeline.

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. An air valve of antiseized preventing leaking which characterized in that: comprises a valve body (1), a valve cover (6), a floating ball device (3), a protective cylinder (4), a sealing ring (5), a protective net (7), an exhaust hood (8), a micro exhaust assembly (B5, B6, B7) and a pollution discharge assembly (B1), wherein the valve body (1) comprises a medium inlet, a medium outlet, a sewage discharge outlet, a micro exhaust port and a valve cavity, the axial direction of the medium inlet is coincident with the axial direction of the medium outlet, the valve cavity is positioned between the medium inlet and the medium outlet, the drift diameter of the valve cavity is greater than that of the medium inlet, the drift diameter of the medium inlet is equal to that of the medium outlet, the valve cover (6) and the medium inlet are coaxial, the protective cylinder (4) is arranged in the valve cavity, the protective cylinder (4) and the valve body (1) are coaxial, the outlet end of the valve body (1) is provided with a groove, the protective cylinder (4) is arranged on the outlet end groove, the protective cylinder (4) is formed by welding a circular flat plate and a steel plate, the height of the circular flat plate is lower than the medium outlet plane of the valve body (1), the thickness of the circular flat plate is equal to the depth of an outlet end groove of the valve body (1), the protective cylinder (4) and the valve cover (6) are coaxial, and the protective net (7) is located between the exhaust hood (8) and the valve cover (6).

2. A release and leak resistant air valve according to claim 1, further comprising: a plane sealing ring (5) with a spigot is arranged between the bottom of the valve cover (6) and the upper part of the valve body (1), and an embedded groove for placing the sealing ring (5) is arranged at the bottom of the valve cover (6).

3. A release and leak resistant air valve according to claim 1, further comprising: a spigot is arranged between the valve body (1) and the valve cover (6), a notch is arranged on the valve body (1), a convex opening is arranged on the valve cover (6), and the valve body (1) and the valve cover (6) are fixedly connected through a first screw (B2).

4. A release and leak resistant air valve according to claim 1, further comprising: the inner and outer surfaces of the valve body (1) and the valve cover (6) are covered with epoxy resin coatings.

5. A release and leak resistant air valve according to claim 1, further comprising: the micro exhaust assembly (B5, B6, B7) is in taper thread connection with the valve body (1), and the pollution discharge assembly (B1) is in taper thread connection with the valve body (1).

6. A release and leak resistant air valve according to claim 1, further comprising: the protective cylinder (4) is formed by welding a circular flat plate and a steel plate, and the exhaust hood (8) is fixedly connected with the valve cover (6) through a first bolt (B3) and a first nut (B4).