CN216519657U

CN216519657U - Novel butterfly valve

Info

Publication number: CN216519657U
Application number: CN202123272558.XU
Authority: CN
Inventors: 刘江波
Original assignee: Boyiou Xiamen Valve Co ltd
Current assignee: Boyiou Xiamen Valve Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-05-13
Anticipated expiration: 2031-12-23

Abstract

The utility model provides a novel butterfly valve which comprises a valve body, a first valve body air inlet pipe and a second valve body air inlet pipe, wherein a butterfly plate for opening and closing a valve passage is arranged on the valve body, a sealing valve seat and an airtight cavity are arranged on the inner wall of the valve passage of the valve body, the airtight cavity is hermetically separated into a separation cavity and a sealing cavity by the sealing valve seat, the separation cavity is positioned between the butterfly plate and the sealing valve seat, and a sealing ring which is abutted against or separated from the sealing valve seat is arranged on the butterfly plate. The first valve body air inlet pipe is filled with gas, so that the sealing valve seat is separated from the butterfly plate, the butterfly plate is rotated to open the valve body, the sealing ring and the sealing valve seat cannot be damaged by friction in the opening process, and the service life is prolonged. In a similar way, when closing the valve body, rotate the butterfly plate return earlier, ventilate to second valve body intake pipe again, promote sealed disk seat and sealing ring top and support the contact, reach the purpose of closing the valve body, can not form the condition of damage to the valve body when having realized opening, having closed the valve body, improve the life of novel butterfly valve.

Description

Novel butterfly valve

Technical Field

The utility model relates to the field of valve structures, in particular to a novel butterfly valve.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk.

The valve 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. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

For the valve, the degree of the sealing performance of the valve is one of the important standards for judging the quality of the valve, so that the sealing structure design is particularly important, and the technical difficulty of the butterfly valve is how to realize sealing, how to open and close the valve and ensure the service life of the valve.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel butterfly valve, aiming at solving the problem that the service life of the existing butterfly valve is low.

The utility model is realized by the following steps: a novel butterfly valve, comprising:

the valve comprises a valve body, a butterfly plate and a sealing cavity, wherein the butterfly plate is arranged on the valve body and used for opening and closing a channel of the valve body, a sealing valve seat and the sealing cavity are arranged on the inner wall of the channel of the valve body, the sealing cavity is sealed and divided into a separation cavity and a sealing cavity by the sealing valve seat, the separation cavity is positioned between the butterfly plate and the sealing valve seat, and a sealing ring which is abutted against or separated from the sealing valve seat is arranged on the butterfly plate;

one end of the first valve body air inlet pipe penetrates through the side wall of the valve body and is communicated with the separation cavity; and

and one end of the second valve body air inlet pipe penetrates through the side wall of the valve body and is communicated with the sealing cavity.

Preferably, the sealing ring is a ceramic sealing ring, and the sealing valve seat is a ceramic sealing valve seat.

Preferably, one side wall of the sealing cavity adjacent to the valve body port is a detachable valve seat pressing ring.

Preferably, a lug is arranged on the channel of the valve body; when the butterfly plate and the valve body are in a closed state, a plane where the butterfly plate is located is a first reference surface, a plane which is perpendicular to the first reference surface and coincides with the central line of the rotating shaft of the butterfly plate is a second reference surface, the side face, facing the butterfly plate, of the protruding block is parallel to the first reference surface, and the protruding block is located on one side of the second reference surface.

Preferably, the butterfly valve further comprises an air cylinder and an air source, the output end of the air cylinder is arranged on the rotating shaft of the butterfly plate, and the first valve body air inlet pipe, the second valve body air inlet pipe and the air cylinder are communicated to the air source in parallel.

Preferably, the air source is provided with an electromagnetic valve, a first delay valve and a second delay valve, the first delay valve is arranged between the first output end of the air source and the first air inlet of the air cylinder, and the second delay valve is arranged between the second output end of the air source and the air inlet pipe of the second valve body;

the air inlet end of the electromagnetic valve is communicated with the third output end of the air source, the first valve body air inlet pipe and the other air inlet of the first delay valve are communicated to the first air outlet end of the electromagnetic valve in parallel, and the second air inlet of the air cylinder and the other air inlet of the second delay valve are communicated to the second air outlet end of the electromagnetic valve in parallel.

Preferably, the contact part of the sealing ring and the sealing valve seat which is abutted and sealed is inclined plane sealing or cambered surface sealing.

The utility model has the beneficial effects that:

1. when the butterfly valve is used, gas is introduced into the first valve body air inlet pipe firstly, so that the sealing valve seat is separated from the butterfly plate, the butterfly plate is rotated to open the valve body, the sealing ring and the sealing valve seat cannot be damaged by friction in the opening process, and the service life is prolonged. In a similar way, when closing the valve body, rotate the butterfly plate return earlier, ventilate to second valve body intake pipe again, promote sealed disk seat and sealing ring top and support the contact, reach the purpose of closing the valve body, can not form the condition of damage to the valve body when having realized opening, having closed the valve body, improve the life of novel butterfly valve.

2. The sealing ring can be a ceramic sealing ring, and the sealing valve seat is a ceramic sealing valve seat. The sealing structure made of the ceramic material has a long service life. Because, ceramic materials are chemically stable and have a very high hardness (rockwell hardness HRC90), second only to diamond. Therefore, the novel valve has extremely high abrasion resistance, corrosion resistance and erosion resistance, good heat insulation property and small thermal expansion, and the service life of the valve is greatly prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a novel butterfly valve according to an embodiment of the utility model;

FIG. 2 is a partial view of a novel butterfly valve in accordance with an embodiment of the present invention;

fig. 3 is a partial cross-sectional view of a novel butterfly valve according to an embodiment of the utility model.

Reference numerals:

10. a valve body;

101. a butterfly plate; 102. sealing the valve seat; 103. an airtight chamber; 104. a valve seat pressing ring;

105. a bump; 1011. a seal ring; 1031. a separation chamber; 1032. sealing the cavity;

20. a first valve body air inlet pipe; 30. a second valve body air inlet pipe; 40. a cylinder;

50. a gas source;

501. an electromagnetic valve; 502. a first time delay valve; 503. a second time delay valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples of the following,

Referring to fig. 1, 2 and 3, the present embodiment provides a novel butterfly valve, which includes a valve body 10, a first valve body air inlet pipe 20 and a second valve body air inlet pipe 30, a butterfly plate 101 for opening and closing a passage of the valve body 10 is disposed on the valve body 10, a sealing valve seat 102 and an airtight chamber 103 are disposed on an inner wall of the passage of the valve body 10, the airtight chamber 103 is hermetically divided into a separation chamber 1031 and a sealing chamber 1032 by the sealing valve seat 102, and the sealing between the sealing valve seat 102 and the airtight chamber 103 is sealed by a sealing ring, so that the entire airtight chamber 103 is a sealed space. The separation chamber 1031 is positioned between the butterfly plate 101 and the sealing valve seat 102, and the butterfly plate 101 is provided with a sealing ring 1011 which is abutted against or separated from the sealing valve seat 102; one end of the first valve body air inlet pipe 20 penetrates through the side wall of the valve body 10 and is communicated with the separation chamber 1031; one end of the second body inlet pipe 30 is disposed through the sidewall of the valve body 10 to communicate with the seal chamber 1032.

Specifically, the first valve body air inlet pipe 20 and the second valve body air inlet pipe 30 are respectively communicated with the air pump, and it can be set that when the first valve body air inlet pipe 20 supplies air, the second valve body air inlet pipe 30 is in a closed state, and vice versa. Therefore, when the first valve body air inlet pipe 20 is filled with air, high-pressure air is filled into the separation chamber 1031, the sealing valve seat 102 is pushed to move in the direction away from the butterfly plate 101, the sealing valve seat 102 is separated from the butterfly plate 101, the butterfly plate 101 is rotated to open the valve body 10, and the purposes that the sealing ring 1011 and the sealing valve seat 102 cannot be damaged by friction in the opening process and the service life is prolonged are achieved.

Similarly, when closing valve body 10, then rotate butterfly plate 101 earlier and carry out the return, ventilate to second valve body intake pipe 30 again, first valve body intake pipe 20 is in the closure state this moment, and sealed chamber 1032 lets in high-pressure gas, promotes sealed disk seat 102 and sealing ring 1011 top and supports the contact, reaches the purpose of closing valve body 10, has realized opening, can not form the condition of damage to valve body 10 when closing valve body 10, improves the life of novel butterfly valve.

In this embodiment, the sealing ring 1011 is a ceramic sealing ring 1011, and the sealing valve seat 102 is a ceramic sealing valve seat 102. Because of the chemical stability and hardness of ceramic materials (rockwell hardness HRC90, second only to diamond). Therefore, the novel butterfly valve has extremely high wear resistance, corrosion resistance and erosion resistance, good heat insulation property and small thermal expansion, and the service life of the valve is greatly prolonged.

In this embodiment, the side wall of the chamber 1032 adjacent the port of the valve body 10 is a removable seat ring 104. The design of the valve seat pressing ring 104 makes the manufacturing process of the airtight cavity 103 in the valve body 10 simpler and more convenient, and realizes the effect of assembling and using the valve body 10. The internal structure condition of the valve body 10 can be seen clearly through the disassembly, the maintenance, the part replacement and the like at the later stage are easy, and the practicability is improved.

As shown in fig. 2, the ratio of the passages of the valve body 10 in the present embodiment is provided with a projection 105; when the butterfly plate 101 and the valve body 10 are in a closed state, a plane where the butterfly plate 101 is located is set as a first reference plane, a plane which is perpendicular to the first reference plane and coincides with a center line of a rotating shaft of the butterfly plate 101 is set as a second reference plane, a side surface of the projection 105 facing the butterfly plate 101 is parallel to the first reference plane, and the projection 105 is located on one side of the second reference plane. The design of lug 105 can play the effect of a benchmark location for butterfly plate 101 has the effect of a location when closing, makes after closing novel butterfly valve at every turn, guarantees that sealed disk seat 102 and sealing ring 1011 can push up to the contact seal, reaches the effect of zero leakage, improves the practicality.

As shown in fig. 1, the present embodiment further includes an air cylinder 40 and an air source 50, an output end of the air cylinder 40 is disposed on a rotating shaft of the butterfly plate 101, and the first valve body air inlet pipe 20, the second valve body air inlet pipe 30 and the air cylinder 40 are connected in parallel to the air source 50. Air supply 50 can use cylinder 40 to drive butterfly plate 101 to rotate for the high-pressure gas that the air pump provided, and air supply 50 provides high-pressure gas for first valve body intake pipe 20, second valve body intake pipe 30 and cylinder 40 to realize the switch action of novel butterfly valve, can reach the purpose of carrying out control through the peripheral hardware terminal, improve the degree of automation layer of novel butterfly valve.

Further, as shown in fig. 1, the air supply 50 in this embodiment is provided with a solenoid valve 501, a first delay valve 502 and a second delay valve 503, the first delay valve 502 is arranged between the first output end of the air supply 50 and the first air inlet of the air cylinder 40, and the second delay valve 503 is arranged between the second output end of the air supply 50 and the second valve body air inlet pipe 30; an air inlet end of the electromagnetic valve 501 is communicated with a third output end of the air source 50, the first valve body air inlet pipe 20 is communicated with the other air inlet of the first delay valve 502 in parallel to a first air outlet end of the electromagnetic valve 501, and the second air inlet of the air cylinder 40 is communicated with the other air inlet of the second delay valve 503 in parallel to a second air outlet end of the electromagnetic valve 501.

When the novel butterfly valve needs to be opened, the air source 50 is simultaneously conveyed to the electromagnetic valve 501, the first delay valve 502 and the second delay valve 503 through the air source 50. At this time, the first air outlet end of the electromagnetic valve 501 inputs high-pressure air to the first valve body air inlet pipe 20 (the second air outlet end of the electromagnetic valve 501 is in a closed state), and pushes the sealing valve seat 102 to separate from the sealing ring 1011; meanwhile, the first gas outlet end of the electromagnetic valve 501 outputs gas into the first delay valve 502, the first delay valve 502 obtains the gas signal for delaying, the delaying time can be 1 second, 2 seconds or 3 seconds, after the sealing valve seat 102 is separated from the sealing ring 1011, high-pressure gas is provided for the gas pump, and the butterfly plate 101 is rotated to open the valve body 10. While the second delay valve 503 does not receive a gas signal and is therefore in a closed state. The effect of opening novel butterfly valve in proper order has been realized, avoids opening novel butterfly valve and is the problem that sealed disk seat 102 and sealing ring 1011 take place the friction.

Similarly, when the new butterfly valve needs to be closed, the air source 50 is also simultaneously supplied to the solenoid valve 501, the first delay valve 502 and the second delay valve 503. At this time, the second air outlet end of the electromagnetic valve 501 is used for discharging air to drive the air pump to rotate reversely, so as to drive the butterfly plate 101 to rotate reversely to the stop block, and resetting is realized. And the gas circuit that communicates with second time delay valve 503 starts second time delay valve 503 and carries out the time delay, the length of time delay can be for 1 second, 2 seconds or 3 seconds etc., treat the butterfly plate 101 back that resets, admit air sealed chamber 1032 via second valve body intake pipe 30, promote sealed disk seat 102 and sealing ring 1011 top and support the contact, the completion is to the closure of novel butterfly valve, consequently, when closed novel butterfly valve, also not take place the friction between sealed disk seat 102 and the sealing ring 1011, only treat to carry out the top when closed and support the contact, the life of novel butterfly valve has been improved.

As shown in fig. 3, the contact portion of the sealing ring 1011 and the sealing seat 102 is an inclined surface seal or an arc surface seal. The inclined plane is in abutting contact fit with the inclined plane, so that the abutting fit contact area is large, and the sealing effect is improved. And the cooperation between cambered surface and cambered surface or cambered surface and inclined plane can reach the sealed effect of sphere, reach zero leakage's purpose.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel butterfly valve, its characterized in that includes:

2. The novel butterfly valve of claim 1, wherein: the sealing ring is a ceramic sealing ring, and the sealing valve seat is a ceramic sealing valve seat.

3. The novel butterfly valve of claim 1, wherein: and one side wall of the sealing cavity adjacent to the port of the valve body is a detachable valve seat pressing ring.

4. The novel butterfly valve of claim 1, wherein: a lug is arranged on the channel of the valve body; when the butterfly plate and the valve body are in a closed state, a plane where the butterfly plate is located is a first reference surface, a plane which is perpendicular to the first reference surface and coincides with the central line of the rotating shaft of the butterfly plate is a second reference surface, the side face, facing the butterfly plate, of the protruding block is parallel to the first reference surface, and the protruding block is located on one side of the second reference surface.

5. The novel butterfly valve of claim 1, wherein: the butterfly valve is characterized by further comprising an air cylinder and an air source, wherein the output end of the air cylinder is arranged on the rotating shaft of the butterfly plate, and the first valve body air inlet pipe, the second valve body air inlet pipe and the air cylinder are connected in parallel and communicated to the air source.

6. The novel butterfly valve of claim 5, wherein: the air source is provided with an electromagnetic valve, a first delay valve and a second delay valve, the first delay valve is arranged between the first output end of the air source and the first air inlet of the air cylinder, and the second delay valve is arranged between the second output end of the air source and the second valve body air inlet pipe;

7. The novel butterfly valve of claim 1, wherein: the contact part of the sealing ring and the sealing valve seat which is propped against and sealed mutually is inclined plane sealing or cambered surface sealing.