CN112943938A

CN112943938A - Pneumatic explosion-proof valve with energy storage electromagnetic device

Info

Publication number: CN112943938A
Application number: CN202110124479.XA
Authority: CN
Inventors: 朱红春
Original assignee: Chongqing Dunming Valve Co Ltd
Current assignee: Chongqing Dunming Valve Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-06-11

Abstract

The invention relates to the technical field of valves, and discloses a pneumatic explosion-proof valve with an energy storage electromagnetic device, which comprises a valve body, wherein a valve core is vertically and slidably connected to the valve body, and a first locking groove and a second locking groove positioned below the first locking groove are formed in the valve core; an energy storage electromagnetic mechanism is arranged on one side of the valve body, and a locking mechanism is arranged on the other side of the valve body; the energy storage electromagnetic mechanism comprises an electromagnetic coil and a movable iron core, and the electromagnetic coil is positioned on the periphery of the movable iron core; a driving cylinder is arranged below the explosion-proof coil shell, a pilot valve port is formed in the driving cylinder, and a movable iron core is used for sealing the pilot valve port; the horizontal sliding connection has the piston in the actuating cylinder, is fixed with on the piston with actuating cylinder horizontal sliding connection's piston shaft, and the piston shaft extends to the outside of actuating cylinder, is provided with first elastic component between piston and the actuating cylinder. The explosion-proof valve has a simple structure, can be quickly opened and closed, and improves the safety performance of the explosion-proof valve.

Description

Pneumatic explosion-proof valve with energy storage electromagnetic device

Technical Field

The invention relates to the technical field of valves, and particularly discloses a pneumatic explosion-proof valve with an energy storage electromagnetic device.

Background

The explosion-proof valve is widely applied to gas extraction pipelines in the coal mine exploitation industry, and when the volume concentration of gas is too high during underground work of a coal mine, gas explosion accidents are easy to happen and are frequently seen. Once an accident is formed, the coal mine can be destroyed and killed, and great loss is brought to coal mine exploitation.

The explosion-proof valve is indispensable equipment in the coal mining industry, and the existing explosion-proof valve adopts an electromagnetic driver to drive the valve to be quickly closed. Because the electromagnetic driver passes through solenoid's effort to close the valve, receive the influence of gas pressure, the electric quantity of consumption is great, leads to the battery life who is connected with the electromagnetic driver short. Meanwhile, when a fault occurs, the explosion-proof valve needs to be closed quickly to avoid the occurrence of an accident.

Disclosure of Invention

The invention aims to provide a pneumatic explosion-proof valve with an energy storage electromagnetic device, so as to save energy for the energy storage electromagnetic device and quickly close the explosion-proof valve.

In order to achieve the above object, the basic scheme of the invention is as follows: a pneumatic explosion-proof valve with an energy storage electromagnetic device comprises a valve body, wherein a valve core is vertically and slidably connected to the valve body, and a first locking groove and a second locking groove positioned below the first locking groove are formed in the valve core; an energy storage electromagnetic mechanism is arranged on one side of the valve body, and a locking mechanism which is used for extending into the first locking groove is arranged on the other side of the valve body; the energy storage electromagnetic mechanism comprises an explosion-proof coil shell and an electromagnetic coil arranged in the explosion-proof coil shell, a movable iron core is vertically connected in the explosion-proof coil shell in a sliding mode, and the electromagnetic coil is located on the periphery of the movable iron core; a driving cylinder is arranged below the explosion-proof coil shell, a pilot valve port communicated with the explosion-proof coil shell is formed in the driving cylinder, and the movable iron core is used for sealing the pilot valve port; a piston is horizontally and movably connected in the driving cylinder, a piston shaft horizontally and slidably connected with the driving cylinder is fixed on the piston, the piston shaft extends to the outside of the driving cylinder, a first elastic piece is arranged between the piston and the driving cylinder, and the piston shaft extends into the second piston groove when facing the second locking groove; an energy storage gas tank is fixedly arranged on the driving cylinder and communicated with the explosion-proof coil shell.

The principle and the beneficial effects of the invention are as follows: when the energy storage air cylinder works, the electromagnetic coil is powered on instantly for 100ms and then powered off, the movable iron core is closed after the pilot valve port is opened due to suction force generated by the electromagnetic coil, air in the energy storage air cylinder is released instantly to a driving air cylinder space through the pilot valve port within required time, the piston moving shaft is pushed rapidly under the explosion action of air pressure, and the piston shaft can be contracted by 3-5 mm within 20 ms. At the moment, the piston shaft is separated from the second locking groove, the valve core is pushed to move downwards to seal the valve body, and the valve core extends into the first locking groove through the locking mechanism to be locked, so that the purpose of locking the valve core is achieved.

After the piston shaft is instantly and quickly contracted to execute, the piston releases air pressure by means of the gap between the first elastic piece and the driving cylinder, the piston shaft resets, at the moment, the valve core is pulled to slide upwards, when the piston shaft is opposite to the second locking groove, the piston shaft extends into the second locking groove to lock the valve core, and therefore the valve body is kept in an open state. In the scheme, as the longer the time for electrifying the electromagnetic coil is, the more gas enters the driving cylinder, the more gas loss in the energy storage tank is, and the use times are few; if the electrifying time of the electromagnetic coil is short, the less the gas in the energy storage gas tank enters the driving cylinder, and the less the gas in the energy storage gas tank enters the driving cylinder

In this scheme, through energy storage gas pitcher, solenoid and the cooperation that moves the iron core, great reduction solenoid and the electromagnetism consumption that moves the iron core, prolonged the live time of battery to reach energy-conserving purpose. The scheme has the advantages of large driving force, high execution speed and capability of quickly closing and opening the explosion-proof valve.

Furthermore, a second elastic piece is sleeved on the movable iron core.

Has the advantages that: after the power is cut off, the movable iron core seals the pilot valve port under the action of the movable iron core and the second elastic piece so as to prevent gas from entering the driving cylinder through the pilot valve port.

Further, an inflation one-way valve is communicated with the energy storage gas tank.

Has the advantages that: the gas is filled into the energy storage gas tank through the gas filling one-way valve, and the gas in the energy storage gas tank is blocked from flowing backwards through the gas filling one-way valve, so that sufficient gas storage in the energy storage gas tank is ensured.

Further, a pressure mechanism for detecting the pressure in the energy storage gas tank is mounted on the energy storage gas tank.

Has the advantages that: the pressure intensity of the gas in the energy storage gas tank is detected through the pressure mechanism, so that the safety in the energy storage gas tank is ensured.

Further, the volume of the energy storage gas tank is 800-850 ml.

Has the advantages that: the volume of the energy storage gas tank is 800-850 ml, so that sufficient gas in the energy storage gas tank is ensured.

Furthermore, a labor-saving mechanism is fixed on the valve body and comprises a supporting shaft and a pushing arm which is rotatably connected to the supporting shaft, the pushing arm and the supporting shaft form a lever, and one end of the pushing arm is hinged to the valve core.

Has the advantages that: the push arm and the supporting shaft form a lever, when an operator rotates the push arm, the valve core can be driven by the push arm to drive the valve core quickly, so that the first locking groove on the valve core is aligned to the piston shaft quickly, and the second locking groove on the valve core is aligned to the locking mechanism quickly.

Furthermore, the valve core is hinged with a limiting first arm, and one end, far away from the pushing arm, of the limiting first arm is hinged with a limiting second arm hinged with the supporting shaft.

Has the advantages that: carry on spacingly through spacing first arm and spacing second arm to the catch arm, at the in-process that the catch arm drove the case to avoid the catch arm to take place the offset, make the catch arm rotate more stably.

Furthermore, locking mechanism includes the lock core of horizontal sliding connection on driving actuating cylinder, and the cover is equipped with the third elastic component on the lock core, and the one end of third elastic component is fixed on driving actuating cylinder, and the other end of third elastic component is fixed on the lock core, and the one end that driving actuating cylinder was kept away from to the lock core rotates and is connected with the handle, is provided with the gasket between lock core and the handle.

Has the advantages that: the lock core is pulled by an operator to horizontally slide through the handle, the gasket is placed between the handle and the lock core in the pulling process, and the distance between the lock core and the handle is increased, so that the lock core is further pulled, and the labor intensity of the operator is reduced. When the lock cylinder needs to be reset, the gasket is taken down from between the lock cylinder and the handle, and the lock cylinder resets and extends into the second locking groove under the action of the third elastic piece.

Furthermore, the handle is detachably connected with an anti-rebound handle.

Has the advantages that: when the lock core stretched into first locked groove in, the handle reset, then spacing to the handle through preventing the handle that rebounds to avoid the handle to rotate, simultaneously, utilize the handle that prevents rebounding to hang the gasket.

Furthermore, inclined surfaces are arranged on two sides of the piston.

Has the advantages that: gas enters the driving cylinder through the pilot valve port, and meanwhile, the gas is guided to one side of the piston shaft by the inclined planes on the two sides of the piston so as to achieve the purpose of extruding the piston.

Drawings

FIG. 1 is a front view of a pneumatic explosion suppression valve with an energy storage solenoid in an embodiment of the present invention;

FIG. 2 is a front view of a labor saving mechanism in an embodiment of the present invention;

FIG. 3 is a front view of an energy storing electromagnetic mechanism in an embodiment of the present invention;

fig. 4 is an enlarged view of a portion a of fig. 3.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the valve comprises a valve body 1, a labor-saving mechanism 2, an energy storage electromagnetic mechanism 3, a valve plate 4, a support shaft 21, a handle 22, an anti-rebound handle 221, a gasket 23, a lock cylinder 24, a third elastic piece 25, a push arm 26, a limit second arm 27, a limit first arm 28, a valve rod 29, a first locking groove 291, a second locking groove 292, an anti-explosion coil shell 31, an electromagnetic coil 32, a movable iron core 33, a first elastic piece 331, a first anti-explosion surface 311, a second anti-explosion surface 312, an energy storage gas tank 34, an inflation one-way valve 35, a pressure gauge 36, a pilot valve port 37, a channel 371, a piston 38, a gas cavity 381, a second elastic piece 382, a piston shaft 39 and a channel 371.

Example (b):

basically, as shown in attached figures 1, 2 and 3, the pneumatic explosion-proof valve with the energy storage electromagnetic device comprises a valve body 1, wherein a valve core is vertically and slidably connected to the valve body 1, the valve core comprises a valve rod 29 and a valve plate 4 fixed on the valve rod 29 through a bolt, the valve plate 4 is located in the valve body 1, when the valve core slides downwards, the valve core seals the valve body 1, and when the valve core slides upwards, the valve core opens the valve body 1. The valve stem 29 is formed with a first locking groove 291 and a second locking groove 292 below the first locking spool 24 groove.

Be provided with energy storage electromagnetic mechanism 3 on one side of valve body 1, energy storage electromagnetic mechanism 3 includes explosion-proof coil shell 31, the left side bolt fastening of explosion-proof coil shell 31 has first explosion-proof face 311, constitute first explosion-proof chamber between first explosion-proof face 311 and the explosion-proof coil shell 31, the left side bolt fastening of first explosion-proof face 311 has second explosion-proof face 312, constitute second explosion-proof chamber between first explosion-proof face 311 and the second explosion-proof face 312, through explosion-proof face and explosion-proof chamber, improve energy storage electromagnetic mechanism 3's security.

Be provided with solenoid 32 in the explosion-proof coil shell 31, vertical sliding connection has movable iron core 33 in the explosion-proof shell, and solenoid 32 is located the periphery of moving iron core 33, and the cover is equipped with first elastic component 331 on moving iron core 33, and first elastic component 331 is the spring in this embodiment, and the one end of spring is fixed on explosion-proof coil shell 31, and the other end of spring is fixed on moving iron core 33. The electromagnetic coil 32 is connected to a battery (not shown) through a wire.

The lower part bolt fastening of explosion-proof coil shell 31 has and drives actuating cylinder, drive actuating cylinder and 1 bolt fixed connection of valve body, explosion-proof coil shell 31 and drive constitute the intercommunication chamber between the actuating cylinder, explosion-proof coil shell 31 and drive and be provided with the rubber spare between the actuating cylinder, the rubber spare bonding is fixed on driving the actuating cylinder in this embodiment, receive explosion-proof coil shell 31 and the extrusion effort that drives between the actuating cylinder, with explosion-proof coil shell 31 and the clearance that drives between the actuating cylinder seal, and then make the intercommunication chamber seal, reduce gaseous the revealing.

The driving cylinder is provided with a pilot valve port 37 and an air cavity 381 communicated with the pilot valve port 37, the pilot valve port 37 is communicated with a communicating cavity, the movable iron core 33 is used for sealing the pilot valve port 37, a piston 38 is horizontally and movably connected in the air cavity 381, a guide shaft horizontally and slidably connected with the driving cylinder is fixed on the left side of the piston 38 through a screw, and a second elastic member 382 is sleeved on the guide shaft, in the embodiment, the second elastic member 382 is a spring, one end of the spring is fixed on the guide shaft, and the other end of the spring is fixed on the piston 38. A piston shaft 39 is fixed on the right bolt of the piston 38, the piston shaft 39 is horizontally connected with the driving cylinder in a sliding mode, and the piston shaft 39 extends out of the driving cylinder. The piston 38 has inclined surfaces on both the upper and lower sides, and the left end of the inclined surface is higher than the right end.

Drive the cylinder and go up bolt fastening and have right side open-ended energy storage gas pitcher 34, it has the passageway 371 in intercommunication energy storage gas pitcher 34 and intercommunication chamber to drive to open on the cylinder, energy storage gas pitcher 34 and drive and be provided with the sealing member between the cylinder, the sealing member is made by elastic material in this embodiment, elastic material if: rubber. When the energy storage gas tank 34 is installed on the driving cylinder, the sealing element is subjected to the squeezing action between the energy storage gas tank 34 and the driving cylinder, and the sealing element deforms so as to seal the gap between the energy storage gas tank 34 and the driving cylinder. An inflation check valve 35 communicated with the energy storage gas tank 34 is fixed on the energy storage gas tank 34 through screws, and a pressure mechanism is installed on the energy storage gas tank 34, wherein the pressure mechanism is a pressure gauge 36 in the embodiment. The volume of the energy storage gas tank 34 is 800-850 ml, and the volume of the energy storage gas tank 34 is 850ml in the embodiment.

The opposite side of valve body 1 is provided with locking mechanism, locking mechanism includes and drives actuating cylinder horizontal sliding connection's lock core 24, the cover is equipped with third elastic component 25 on the lock core 24, third elastic component 25 is the spring, the one end fix with screw of spring drives actuating cylinder on, the other end fix with screw of spring is on lock core 24, the one end rotation that valve rod 29 was kept away from to lock core 24 is connected with handle 22, can dismantle between handle 22 and the lock core 24 and be connected with gasket 23, gasket 23 is the C type in this embodiment, the last suspension of handle 22 has anti-bounce handle 221, anti-bounce handle 221 is the chain in this embodiment, gasket 23 can hang on anti-bounce handle 221.

Still include laborsaving mechanism 2 in this embodiment, laborsaving mechanism 2 includes the back shaft 21 of bolt fastening on valve body 1, rotate on the back shaft 21 and be connected with catch arm 26, catch arm 26's the short right-hand member of left end is long, catch arm 26 constitutes laborsaving lever with back shaft 21, catch arm 26's left end and valve rod 29 rotate to be connected, it has spacing first arm 28 to articulate on the valve rod 29, the one end that valve rod 29 was kept away from to spacing first arm 28 articulates there is spacing second arm 27, spacing second arm 27 is articulated with back shaft 21.

The specific implementation process is as follows:

the gas is filled into the energy storage gas tank 34 through the gas filling check valve 35 by the gas pump in advance (or when the gas pressure of the energy storage gas tank 34 is too low or not, the gas source can be supplemented by the movable gas tank), the pressure in the energy storage gas tank 34 is observed through the pressure gauge 36, when the pressure reaches a certain value (1.2-1.8 MPa), the pressure in the energy storage gas tank 34 reaches 1.7MPa in the embodiment, and the gas filling into the energy storage gas tank 34 is stopped.

When the pneumatic explosion-proof valve with the energy storage electromagnetic device is closed to work, the electromagnetic coil 32 is powered on for 50-100 ms instantly through the storage battery and then is powered off (or powered on for 50ms or other numerical time according to requirements, such as 55ms, 60ms, 65ms and 70ms), the electromagnetic coil 32 is powered on to generate magnetic force, the movable iron core 33 is driven upwards under the action of the magnetic force, the movable iron core 33 opens the pilot valve port 37, gas in the energy storage gas tank 34 enters the communicating cavity through the channel 371, then enters the pilot valve port 37 through the communicating cavity, then enters the gas cavity 381 through the guide of the inclined surface, the piston 38 is rapidly pushed to move by the explosion effect of the gas pressure, and the piston shaft 39 can be contracted to 3-5 mm within 20 ms. In this way, the piston shaft 39 is separated from the second locking groove 292, that is, the piston shaft 39 is rapidly separated from the valve rod 29 of the explosion-proof valve, and meanwhile, the valve rod 29 is pushed to move the valve plate 4 downwards by clockwise rotation of the pushing arm 26 of the labor-saving mechanism 2, so as to rapidly seal the valve body 1. In this embodiment, the movement stroke of the piston shaft 39 can be controlled according to the time of each energization of the electromagnetic coil 32, and the longer the energization of the electromagnetic coil 32, the longer the movement distance of the piston shaft 39. When the valve body 1 is sealed, the first locking groove 291 is aligned with the lock cylinder 24, the lock cylinder 24 is inserted into the first locking groove 291 under the action of the third elastic piece 25, the valve rod 29 is locked to prevent the valve rod 29 from returning with the valve plate 4 under the action of gas, the handle 22 is rotated to be vertical, the anti-rebounding handle 221 is hung on the handle 22, and the gasket 23 is hung on the anti-rebounding handle 221.

After the power failure, under the action of the elastic force of the first elastic element 331 and the gravity of the movable iron core 33, the movable iron core 33 closes the pilot valve port 37, and the gas in the energy storage gas tank 34 is blocked from being introduced into the gas cavity 381. Under the action of the second elastic element 382, the second elastic element 382 pushes the piston 38 and the piston shaft 39 to reset, the piston shaft 39 abuts against the valve rod 29, and the gas in the gas cavity 381 is decompressed through the gap of the driving cylinder.

When the pneumatic explosion-proof valve with the energy storage electromagnetic device needs to be opened, an operator takes down the anti-rebound handle 221 and the gasket 23, rotates the handle 22 to the horizontal state, then installs the gasket 23 between the lock cylinder 24 and the handle 22, the gasket 23 increases the distance between the handle 22 and the lock cylinder 24, so that the handle 22 pulls the lock cylinder 24 to separate the lock cylinder 24 from the first locking groove 291, then rotates the valve rod 29 and the valve plate 4 counterclockwise through the push arm 26 to pull the valve rod 29 and the valve plate 4 upward until the second locking groove 292 is aligned with the piston shaft 39, and under the action of the second elastic piece 382, the piston shaft 39 extends into the second locking groove 292 to lock the valve rod 29 and the valve plate 4 and open the valve body 1.

The foregoing is merely an example of the present invention and common general knowledge in the art of specific structures and/or features of the invention has not been set forth herein in any way. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a take energy storage electromagnetic means's pneumatic explosion-proof valve which characterized in that: the valve comprises a valve body, wherein a valve core is vertically and slidably connected to the valve body, and a first locking groove and a second locking groove positioned below the first locking groove are formed in the valve core;

an energy storage electromagnetic mechanism is arranged on one side of the valve body, and a locking mechanism which is used for extending into the first locking groove is arranged on the other side of the valve body;

the energy storage electromagnetic mechanism comprises an explosion-proof coil shell and an electromagnetic coil arranged in the explosion-proof coil shell, a movable iron core is vertically connected in the explosion-proof coil shell in a sliding mode, and the electromagnetic coil is located on the periphery of the movable iron core; a driving cylinder is arranged below the explosion-proof coil shell, a pilot valve port communicated with the explosion-proof coil shell is formed in the driving cylinder, and the movable iron core is used for sealing the pilot valve port; a piston is horizontally and movably connected in the driving cylinder, a piston shaft horizontally and slidably connected with the driving cylinder is fixed on the piston, the piston shaft extends to the outside of the driving cylinder, a first elastic piece is arranged between the piston and the driving cylinder, and the piston shaft extends into the second piston groove when facing the second locking groove;

an energy storage gas tank is fixedly arranged on the driving cylinder and communicated with the explosion-proof coil shell.

2. The pneumatic explosion suppression valve with the energy storage electromagnetic device according to claim 1, characterized in that: the movable iron core is sleeved with a second elastic piece.

3. The pneumatic explosion suppression valve with the energy storage electromagnetic device according to claim 2, characterized in that: an inflation one-way valve is communicated with the energy storage tank.

4. The pneumatic explosion suppression valve with the energy storage electromagnetic device according to claim 3, wherein: and the pressure mechanism for detecting the pressure in the energy storage gas tank is arranged on the energy storage gas tank.

5. The pneumatic explosion suppression valve with the energy storage electromagnetic device according to claim 4, characterized in that: the volume of the energy storage gas tank is 800-850 ml.

6. The pneumatic explosion suppression valve with the energy storage electromagnetic device according to claim 5, characterized in that: the valve body is fixed with a labor-saving mechanism, the labor-saving mechanism comprises a supporting shaft and a pushing arm which is rotatably connected to the supporting shaft, the pushing arm and the supporting shaft form a lever, and one end of the pushing arm is hinged to the valve core.

7. The pneumatic explosion suppression valve with the energy storage electromagnetic device according to claim 6, wherein: a limiting first arm is hinged to the valve core, and a limiting second arm hinged to the supporting shaft is hinged to one end, far away from the pushing arm, of the limiting first arm.

8. The pneumatic explosion suppression valve with the energy storage electromagnetic device according to claim 7, characterized in that: the locking mechanism comprises a lock cylinder which is horizontally and slidably connected onto a driving cylinder, a third elastic piece is sleeved on the lock cylinder, one end of the third elastic piece is fixed onto the driving cylinder, the other end of the third elastic piece is fixed onto the lock cylinder, one end, far away from the driving cylinder, of the lock cylinder is rotatably connected with a handle, and a gasket is arranged between the lock cylinder and the handle.

9. The pneumatic explosion suppression valve with the energy storage electromagnetic device according to claim 8, wherein: the handle is detachably connected with an anti-rebound handle.

10. The pneumatic explosion suppression valve with the energy storage electromagnetic device according to claim 1, characterized in that: the two sides of the piston are provided with inclined planes.