CN215410467U

CN215410467U - Integrated pneumatic high-pressure cut-off valve

Info

Publication number: CN215410467U
Application number: CN202121184433.9U
Authority: CN
Inventors: 张曙东; 范光丰; 张旭清; 毛榜强; 范光盛; 何海弟; 方海城; 范丽余
Original assignee: Zhejiang East Valve Co ltd
Current assignee: Zhejiang East Valve Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-01-04
Anticipated expiration: 2031-05-28

Abstract

The utility model relates to the technical field of valves, in particular to an integrated pneumatic high-pressure cut-off valve. The utility model provides the following technical scheme: pneumatic high pressure trip valve of integral type, which comprises a valve body, disk seat and case, the setting of valve body cavity and its axial both ends are import and export respectively, the disk seat sets up the position that is close to the export in the valve body, be equipped with the movable chamber that holds case round trip movement on the disk seat, movable chamber and case seal fit, be equipped with between disk seat and the export with case complex block the piece, case cavity is provided with the big passageway, and inconsistent with blocking the piece, the case has formed the atmospheric pressure chamber with the valve body, the atmospheric pressure chamber is cut apart into each other communicating A chamber and B chamber through annular separation piece, annular separation piece sets firmly on the case, the valve body corresponds the A chamber and is equipped with A chamber opening, and correspond the B chamber opening that the B chamber was equipped with, be equipped with the spring in the A chamber. According to the utility model, the valve rod is omitted, and the valve core is pushed by pressure, so that the whole valve body is integrally arranged, and the leakage risk is reduced.

Description

Integrated pneumatic high-pressure cut-off valve

Technical Field

The utility model relates to the technical field of valves, in particular to an integrated pneumatic high-pressure cut-off valve.

Background

The traditional pneumatic stop valve generally comprises a valve body, a valve core and a valve rod, wherein the valve core is controlled by the valve rod to open and close the valve body. However, in the using process, when the valve is closed and opened, the valve rod can be blocked by the counterforce, especially under a high-pressure environment, the requirement on the valve rod is high because the pressures on two sides of the valve core are inconsistent, and the valve body needs to be provided with a corresponding valve rod mounting hole corresponding to the valve rod, so that the processing difficulty and the leakage risk are increased.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides the integrated pneumatic high-pressure stop valve, a valve rod is omitted, and a valve core is pushed by pressure, so that the whole valve body is integrally arranged, and the leakage risk is reduced.

In order to achieve the purpose, the utility model provides the following technical scheme: the integrated pneumatic high-pressure cut-off valve comprises a valve body, a valve seat and a valve core, wherein the valve seat and the valve core are arranged in the valve body, the valve body is arranged in a hollow mode, the two axial ends of the valve body are respectively provided with an inlet and an outlet, the valve seat is arranged in the valve body and is close to the outlet, a movable cavity for accommodating the valve core to move back and forth is arranged on the valve seat, the movable cavity is in sealing fit with the valve core, a blocking block matched with the valve core is arranged between the valve seat and the outlet, a flow channel is formed between the blocking block and the valve seat, the valve core is provided with a large channel in a hollow mode, one end of the large channel is communicated with the inlet, the other end of the large channel is communicated with the flow channel and is abutted against the blocking block, the valve core and the valve body form a gas pressure cavity, the gas pressure cavity is divided into an A cavity and a B cavity which are not communicated with each other through an annular blocking piece, the annular blocking piece is fixedly arranged on the valve core, the valve body is provided with an A cavity opening communicated with the valve body corresponding to the A cavity, and a cavity B opening communicated with the cavity B is arranged corresponding to the cavity B, a spring is arranged in the cavity A, one end of the spring is abutted against the annular blocking piece, and the other end of the spring is abutted against the inner wall of the cavity A.

By adopting the technical scheme, the valve core can move relative to the valve seat and is abutted or separated from the blocking block, the large channel is disconnected from the flow channel when the large channel is abutted, and a medium cannot pass through the large channel, and the separated large channel is communicated with the flow channel so that the medium passes through the inlet, the large channel, the flow channel and the outlet in sequence, wherein a valve rod in the prior art is omitted, the valve core moves through the pressure difference between the cavity A and the cavity B, and the side with high pressure can push the annular blocking piece to move to the side with low pressure, so that the valve body is not required to be provided with a mounting hole of the valve rod, the whole valve body is integrally arranged, and the leakage risk is reduced; and the spring that sets up in the A chamber provides corresponding effort for annular separation spare through the conflict with annular separation spare on the one hand, makes the case inseparabler when blocking the piece cooperation, avoids having the clearance between the two, and on the other hand can promote annular separation spare after the pressure in B chamber is less than A chamber and makes the case remove to blocking piece department and conflict rather than, possesses the effect that resets, and it is sensitive to respond to.

Furthermore, the valve body is provided with an end cover matched with the valve body, the valve seat is installed between the end cover and the valve body, the valve body is provided with a mounting groove corresponding to the valve seat, and the valve seat is provided with a mounting block matched with the mounting groove and fixed with the mounting groove through the pressing of the end cover.

By adopting the technical scheme, the valve seat is matched with the mounting groove through the mounting block in a set manner, the primary matching with the valve body is realized, and the mounting block is fixed in the mounting groove by the end cover through the matching between the end cover and the valve body, so that the valve seat is fixed between the valve body and the end cover.

Furthermore, the valve seat is arranged corresponding to the valve body in a sealing mode, a first sealing ring groove is formed in the end face, in contact with the valve body, of the valve seat, and a first sealing ring is arranged in the first sealing ring groove.

Adopt above-mentioned technical scheme, set up like this through the sealed of first sealing washer to the disk seat with the valve body terminal surface that contacts, make B chamber keep sealed, avoid the leakage in B chamber.

Furthermore, a second sealing ring groove is formed in the annular blocking piece, and a second sealing ring is installed in the second sealing ring groove.

By adopting the technical scheme, the annular blocking piece and the inner wall of the air pressure cavity are connected and sealed through the second sealing ring, and the situation that the valve core moves due to the fact that the cavity A and the cavity B are communicated with each other is avoided.

Furthermore, the blocking block is provided with a sealing layer corresponding to the large channel, and the size of the sealing layer is larger than that of the position corresponding to the valve core.

By adopting the technical scheme, the sealing effect of the valve core and the blocking block which are contacted mutually is better, and the leakage of a large channel is avoided.

Furthermore, two ends of the valve core are respectively in sealing fit with the valve body and the valve seat, and third sealing rings are respectively arranged at the positions where the valve body, the valve seat and the valve core are matched.

By adopting the technical scheme, the positions of the two ends of the valve core, which are contacted with the valve body and the valve seat, are sealed through the third sealing ring, so that the sealing of the cavity A and the cavity B is ensured, and the leakage of the cavity A and the cavity B is avoided.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the flow-through when the present invention is turned on.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples.

The integrated pneumatic high-pressure cut-off valve shown in fig. 1-2 comprises a valve body 1, a valve seat 2 and a valve core 3, wherein the valve body 1 is arranged in a hollow manner, the two axial ends of the valve body 1 are respectively provided with an inlet 4 and an outlet 5, the valve seat 2 is arranged in the valve body 1 and is close to the outlet 5, the valve seat 2 is movably matched with the valve core 3 in a sealing manner, a blocking block 6 matched with the valve core 3 is arranged between the valve seat 2 and the outlet 5, a flow channel 7 is formed between the blocking block 6 and the valve seat 2, the valve core 3 is arranged in a hollow manner and is provided with a large channel 8, one end of the large channel 8 is communicated with the inlet 4, the other end of the large channel 8 is communicated with the flow channel 7 and is abutted against the blocking block 6, the valve core 3 and the valve body 1 form an air pressure cavity, the air pressure cavity is divided into an A cavity 9 and a B cavity 10 which are not communicated with each other through an annular blocking piece 11, the annular blocking piece 11 is fixedly arranged on the valve core 3, the valve body 1 corresponds A chamber 9 and is equipped with rather than communicating A chamber opening 12 to and correspond B chamber 10 and be equipped with rather than communicating B chamber opening 13, be equipped with spring 14 in the A chamber 9, spring 14's one end is inconsistent with annular separation piece 11, and the other end is contradicted on A chamber 9 inner wall. The valve core 3 can move relative to the valve seat 2 and is abutted or separated from the blocking block 6, the large channel 8 is disconnected from the flow channel 7 when the large channel 8 is abutted, and a medium cannot pass through the large channel 8 after separation, so that the medium passes through the inlet 4, the large channel 8, the flow channel 7 and the outlet 5 in sequence, wherein a valve rod in the prior art is omitted, the valve core 3 is moved through the pressure difference between the cavity A9 and the cavity B10, and the side with high pressure can push the annular blocking piece 11 to move towards the side with low pressure, so that the valve body 1 is not required to be provided with an installation hole of the valve rod, the whole valve body 1 is integrally arranged, and the leakage risk is reduced; and the spring 14 that sets up in A chamber 9 on the one hand provides corresponding effort for annular separation piece 11 through the conflict with annular separation piece 11, makes case 3 inseparabler when cooperating with stop block 6, avoids having the clearance between the two, and on the other hand can push annular separation piece 11 after the pressure in B chamber 10 is less than A chamber 9 and make case 3 move and conflict rather than stop block 6 department, possesses the effect that resets, responds sensitively.

The cavity A opening 12 and the cavity B opening 13 can be connected with an air pump, the cavity B10 can be inflated through the air pump, the pressure in the cavity B10 is increased, or the air in the cavity A9 is pumped, and the pressure of the cavity A9 is reduced.

The valve comprises a valve body 1, and is characterized in that an end cover 15 matched with the valve body 1 is arranged on the valve body 1, a valve seat 2 is arranged between the end cover 15 and the valve body 1, a mounting groove 16 is arranged on the valve body 1 corresponding to the valve seat 2, and a mounting block 17 matched with the mounting groove 16 is arranged on the valve seat 2 and is fixed with the mounting groove 16 through the pressing of the end cover 15. The setting makes the cooperation of disk seat 2 through installation piece 17 and mounting groove 16 like this, realizes the preliminary cooperation with valve body 1, and through the cooperation between end cover 15 and the valve body 1, makes end cover 15 fix the pressure equipment of installation piece 17 in mounting groove 16 to make disk seat 2 fix between valve body 1 and end cover 15.

The valve seat 2 is arranged corresponding to the valve body 1 in a sealing mode, a first sealing ring groove 18 is formed in the end face, in contact with the valve body 1, of the valve seat 2, and a first sealing ring 19 is arranged in the first sealing ring groove 18. The sealing of the end face of the valve seat 2, which is in contact with the valve body 1, by the first sealing ring 19 is arranged in this way, the cavity B10 is kept sealed, and the leakage of the cavity B10 is avoided.

And a second sealing ring groove 20 is formed in the annular blocking piece 11, and a second sealing ring 21 is installed in the second sealing ring groove 20. The arrangement can seal the connection between the annular blocking member 11 and the inner wall of the air pressure cavity through the second sealing ring 21, and prevent the valve core 3 from being influenced by the communication between the cavity A9 and the cavity B10.

The stop block 6 is provided with a sealing layer 22 corresponding to the large channel 8, and the size of the sealing layer 22 is larger than that of the position corresponding to the valve core 3. The valve core 3 is enabled to be in contact with the blocking block 6 to achieve better sealing effect, and leakage of the large channel 8 is avoided.

Two ends of the valve core 3 are respectively in sealing fit with the valve body 1 and the valve seat 2, and third sealing rings 23 are respectively arranged at the positions where the valve body 1, the valve seat 2 and the valve core 3 are matched. The positions of two ends of the valve core 3, which are contacted with the valve body 1 and the valve seat 2, are sealed through the third sealing ring 23, so that the sealing of the cavity A9 and the cavity B10 is ensured, and the leakage of the cavity A9 and the cavity B10 is avoided.

Claims

1. Pneumatic high pressure trip valve of integral type, its characterized in that: the valve comprises a valve body, a valve seat and a valve core, wherein the valve body is arranged in the valve body in a hollow manner, the two axial ends of the valve body are respectively provided with an inlet and an outlet, the valve seat is arranged at a position close to the outlet in the valve body, the valve seat is in movable sealing fit with the valve core, a blocking block matched with the valve core is arranged between the valve seat and the outlet, a flow channel is formed between the blocking block and the valve seat, the valve core is hollow and provided with a large channel, one end of the large channel is communicated with the inlet, the other end of the large channel is communicated with the flow channel and is abutted against the blocking block, the valve core and the valve body form a pneumatic cavity, the pneumatic cavity is divided into a cavity and a cavity B cavity which are not communicated with each other through an annular blocking piece, the annular blocking piece is fixedly arranged on the valve core, the valve body is provided with an A cavity opening communicated with the valve body corresponding to the A cavity, and is provided with a B cavity opening communicated with the B cavity corresponding to the B cavity, and a spring is arranged in the A cavity, one end of the spring is abutted against the annular blocking piece, and the other end of the spring is abutted against the inner wall of the cavity A.

2. The integrated pneumatic high-pressure cutoff valve according to claim 1, characterized in that: the valve body is provided with an end cover matched with the valve body, the valve seat is installed between the end cover and the valve body, the valve body is provided with a mounting groove corresponding to the valve seat, and the valve seat is provided with a mounting block matched with the mounting groove and fixed with the mounting groove through the pressing of the end cover.

3. The integrated pneumatic high-pressure cutoff valve according to claim 2, characterized in that: the valve seat is arranged corresponding to the valve body in a sealing mode, a first sealing ring groove is formed in the end face, in contact with the valve body, of the valve seat, and a first sealing ring is arranged in the first sealing ring groove.

4. The integrated pneumatic high-pressure cutoff valve according to claim 1, 2 or 3, characterized in that: and a second sealing ring groove is formed in the annular blocking piece, and a second sealing ring is installed in the second sealing ring groove.

5. The integrated pneumatic high-pressure cutoff valve according to claim 1, 2 or 3, characterized in that: the stop block is provided with a sealing layer corresponding to the large channel, and the size of the sealing layer is larger than that of the position corresponding to the valve core.

6. The integrated pneumatic high-pressure cutoff valve according to claim 4, characterized in that: the stop block is provided with a sealing layer corresponding to the large channel, and the size of the sealing layer is larger than that of the position corresponding to the valve core.

7. The integrated pneumatic high pressure shut-off valve according to claim 1, 2, 3 or 6, wherein: and two ends of the valve core are respectively in sealing fit with the valve body and the valve seat, and third sealing rings are respectively arranged at the matched parts of the valve body, the valve seat and the valve core.