CN212107070U

CN212107070U - Trip valve with balance

Info

Publication number: CN212107070U
Application number: CN202020491596.0U
Authority: CN
Inventors: 穆宁; 刘剑; 李冬
Original assignee: Chongqing Jieshi Instrument Co ltd
Current assignee: Chongqing Jieshi Instrument Co ltd
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2020-12-08
Anticipated expiration: 2030-04-07

Abstract

The utility model provides a balanced trip valve in area relates to trip valve technical field, including the valve head, the valve head is inside to be equipped with stop device, and stop device offsets with the valve head inner wall, and stop device runs through the valve head lateral wall, and the bottom mounting of valve head has the rotating member, and stop device runs through the rotating member, and the rotating member side is equipped with explosion-proof equipment, and explosion-proof equipment run through the rotating member lateral wall and with rotating member fixed connection, the utility model discloses in, adopt explosion-proof equipment, realize when the valve body internal pressure is too big, release the valve body internal pressure, prevent that the condition of pipe explosion from taking place, has avoidd the incident that brings because of the pipe explosion to a certain extent.

Description

Trip valve with balance

Technical Field

The utility model relates to a trip valve technical field especially relates to a balanced trip valve in area.

Background

The cut-off valve is one of the executing mechanisms in the automatic system, consists of a multi-spring pneumatic membrane executing mechanism or a floating piston executing mechanism and a regulating valve, receives the signal of a regulating instrument and controls the cut-off, the connection or the switching of fluid in a process pipeline. The device has the characteristics of simple structure, sensitive response, reliable action and the like. Can be widely applied to industrial production departments such as petroleum, chemical industry, metallurgy and the like. The gas source of the pneumatic shut-off valve requires filtered compressed air and the medium flowing through the valve body should be a contaminant-free and particle-free gas or a gas and a gas. According to the allowable differential pressure condition, medium characteristics and process pipeline requirements, a single seat, a sleeve and a three-way cut-off valve can be selected.

The condition that the shut-off valve on the market can take place the pipeline jam at present to the condition that the pipeline is pressed too big and is leaded to the valve body to break takes place, produces great potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a cut-off valve with balance.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a balanced trip valve in area, includes the valve head, the valve head is inside to be equipped with stop device, and stop device offsets with the valve head inner wall, and stop device runs through the valve head lateral wall, the bottom mounting of valve head has the rotating member, and stop device runs through the rotating member, the rotating member side is equipped with explosion-proof equipment, and explosion-proof equipment run through the rotating member lateral wall and with rotating member fixed connection.

Preferably, the valve head includes the valve body with rotating member fixed connection, the inside intake pipe that is equipped with of valve body, and intake pipe and valve body inner wall fixed connection, the one end of intake pipe is fixed with the ring flange, the one end that the ring flange was kept away from to the intake pipe is fixed with the outlet duct.

Preferably, the stop device comprises a stop plate arranged at the joint of the air inlet pipe and the air outlet pipe, a fixed seat is fixed on the top surface of the stop plate, a screw rod is arranged in the fixed seat, and the screw rod is fixedly connected with the fixed seat and penetrates through the side wall of the valve body and is in threaded connection with the valve body.

Preferably, the rotating part comprises a pipe body fixedly connected with the side face of the valve head, the top end of the pipe body is nested with a locking device, the locking device is fixedly connected with the surface of the pipe body, a rotating wheel is arranged at the top end of the pipe body, and the rotating wheel is fixedly connected with the top end of the screw rod.

Preferably, the locking device comprises two fixing pieces nested on the surface of the pipe body, a bolt penetrates through the surface of the fixing piece and is movably connected with the fixing piece, a self-locking nut is nested at the bottom end of the bolt and is in threaded connection with the bolt.

Preferably, explosion-proof equipment includes the air duct with rotating member side fixed connection, and the air duct runs through rotating member and valve head lateral wall, the one end that the rotating member was kept away from to the air duct is fixed with the explosion-proof pipe, and the air duct runs through the lateral wall of explosion-proof pipe, the nested guard shield that has in explosion-proof pipe surface, and the inner wall and the explosion-proof pipe surface of guard shield offset.

Advantageous effects

The utility model discloses in, adopt explosion-proof equipment, realize when the valve body internal pressure is too big, release the valve body internal pressure, the condition that prevents the explosion tube takes place, the incident of bringing because of the explosion tube has been avoidd to a certain extent, when the valve body internal pressure is too high, the air duct is with the leading-in explosion tube of gas of valve head, and the explosion tube breaks under the high pressure, when the valve body internal pressure has not yet arrived the limit, just release intracavity pressure, intracavity pressure can not increase the degree to the valve head that bursts, and the guard shield carries out isolation protection to the explosion tube, the piece that prevents explosion tube fracture production injures the people.

Drawings

Fig. 1 is a sectional view of a valve head in a trip valve with balance provided by the utility model;

fig. 2 is a schematic perspective view of a rotating member in a balanced shut-off valve according to the present invention;

fig. 3 is a sectional view of a rotating member in a balanced shut-off valve provided by the utility model.

Illustration of the drawings:

1. a valve head; 11. a valve body; 12. an air inlet pipe; 13. an air outlet pipe; 14. a flange plate; 2. a cut-off device; 21. a cut-off plate; 22. a fixed seat; 23. a screw rod; 3. a rotating member; 31. a pipe body; 32. a locking device; 321. a fixing member; 322. a bolt; 323. a self-locking nut; 33. a rotating wheel; 4. an explosion-proof device; 41. an air duct; 42. an explosion-proof tube; 43. a shield.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 1-3, a balanced shut-off valve comprises a valve head 1, the valve head 1 comprises a valve body 11 fixedly connected with a rotary member 3, an air inlet pipe 12 is arranged inside the valve body 11, the air inlet pipe 12 is fixedly connected with the inner wall of the valve body 11, one end of the air inlet pipe 12 is fixed with a flange 14, one end of the air inlet pipe 12 far away from the flange 14 is fixed with an air outlet pipe 13, a stop device 2 is arranged inside the valve head 1, the stop device 2 is abutted against the inner wall of the valve head 1, the stop device 2 comprises a stop plate 21 arranged at the joint of the air inlet pipe 12 and the air outlet pipe 13, a fixed seat 22 is fixed on the top surface of the stop plate 21, a lead screw 23 is arranged inside the fixed seat 22, the lead screw 23 is fixedly connected with the fixed seat 22, the lead screw 23 penetrates through the side wall of the valve body 11 and is in threaded connection with the valve, the rotating part 3 comprises a tube body 31 fixedly connected with the side surface of the valve head 1, the top end of the tube body 31 is nested with a locking device 32, the locking device 32 is fixedly connected with the surface of the tube body 31, the locking device 32 comprises two fixing parts 321 nested on the surface of the tube body 31, the surface of the fixing part 321 is penetrated with a bolt 322, the bolt 322 is movably connected with the fixing part 321, the bottom end of the bolt 322 is nested with a self-locking nut 323, the self-locking nut 323 is in threaded connection with the bolt 322, the top end of the tube body 31 is provided with a rotating wheel 33, the rotating wheel 33 is fixedly connected with the top end of the screw rod 23, the tube body 31 limits and fixes the screw rod 23, the screw rod 23 can rotate along with the rotating wheel 33, the side surface of the rotating part 3 is provided with an anti-explosion device 4, the anti-explosion device 4 penetrates through the side wall of the rotating part 3 and is fixedly connected with the rotating part, an explosion-proof tube 42 is fixed at one end of the air duct 41 far away from the rotating member 3, the air duct 41 penetrates through the side wall of the explosion-proof tube 42, a protective cover 43 is nested on the surface of the explosion-proof tube 42, and the inner wall of the protective cover 43 is abutted against the surface of the explosion-proof tube 42.

The utility model discloses a theory of operation: when the cut-off valve is used, gas enters the valve body 11 from the gas inlet pipe 12, the screw 23 rotates along with the rotation of the rotating wheel 33, the fixed seat 22 moves along with the fixed seat, the cut-off plate 21 fixedly connected with the fixed seat 22 moves along with the fixed seat, so that the cut-off plate 21 controls the through hole between the gas inlet pipe 12 and the gas outlet pipe 13, the opening and closing of the valve head 1 are achieved, the pipe body 31 limits and fixes the screw 23, the screw 23 can rotate along with the rotating wheel 33, the locking device 32 is convenient to disassemble, the locking device can be easily disassembled and inspected after the connection between the screw 23 and the rotating wheel 33 fails, when the pressure in the valve body 11 is too high, the gas pipe 41 guides the gas in the valve head 1 into the explosion-proof pipe 42, the explosion-proof pipe 42 breaks under high pressure, when the pressure in the valve body 11 does not reach the limit, the pressure in the cavity is released, the protective cover 43 is used for isolating and protecting the explosion-proof tube 42, and the fragments generated by the explosion-proof tube 42 are prevented from hurting people.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. 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.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A balanced trip valve in area, includes valve head (1), its characterized in that: the valve head is characterized in that a stop device (2) is arranged inside the valve head (1), the stop device (2) is abutted to the inner wall of the valve head (1), the stop device (2) penetrates through the side wall of the valve head (1), a rotating piece (3) is fixed at the bottom end of the valve head (1), the stop device (2) penetrates through the rotating piece (3), an explosion-proof device (4) is arranged on the side face of the rotating piece (3), and the explosion-proof device (4) penetrates through the side wall of the rotating piece (3) and is fixedly connected with the rotating piece (3).

2. A balanced shut-off valve according to claim 1, characterised in that: valve head (1) include with rotating member (3) fixed connection's valve body (11), valve body (11) inside is equipped with intake pipe (12), and intake pipe (12) and valve body (11) inner wall fixed connection, the one end of intake pipe (12) is fixed with ring flange (14), the one end that ring flange (14) were kept away from in intake pipe (12) is fixed with outlet duct (13).

3. A balanced shut-off valve according to claim 1, characterised in that: stop device (2) are including establishing stop plate (21) in intake pipe (12) and outlet duct (13) junction, stop plate (21) top surface is fixed with fixing base (22), fixing base (22) inside is equipped with lead screw (23), and lead screw (23) and fixing base (22) fixed connection, and lead screw (23) run through the lateral wall of valve body (11) and with valve body (11) threaded connection.

4. A balanced shut-off valve according to claim 1, characterised in that: the rotating part (3) comprises a pipe body (31) fixedly connected with the side face of the valve head (1), the top end of the pipe body (31) is nested with a locking device (32), the locking device (32) is fixedly connected with the surface of the pipe body (31), the top end of the pipe body (31) is provided with a rotating wheel (33), and the rotating wheel (33) is fixedly connected with the top end of the screw rod (23).

5. A balanced shut-off valve according to claim 4 characterised in that: the locking device (32) comprises two fixing pieces (321) nested on the surface of the pipe body (31), a bolt (322) penetrates through the surface of the fixing piece (321), the bolt (322) is movably connected with the fixing piece (321), a self-locking nut (323) is nested at the bottom end of the bolt (322), and the self-locking nut (323) is in threaded connection with the bolt (322).

6. A balanced shut-off valve according to claim 1, characterised in that: explosion-proof equipment (4) include with rotating member (3) side fixed connection's air duct (41), and air duct (41) run through rotating member (3) and valve head (1) lateral wall, the one end that rotating member (3) were kept away from in air duct (41) is fixed with explosion-proof tube (42), and air duct (41) run through the lateral wall of explosion-proof tube (42), explosion-proof tube (42) surface nestification has guard shield (43), and the inner wall and the explosion-proof tube (42) surface counterbalance of guard shield (43).