Coal mine gas conveying explosion-proof control device

Abstract

The invention discloses a coal mine gas conveying explosion-proof control device which is characterized in that the right part of a transfer tank is fixedly communicated with the left part of a pressure relief tank through a gas conveying pipe, the left part of the transfer tank is fixedly communicated with a gas inlet pipe, the right part of the gas inlet pipe is downwards vertical and is positioned in the transfer tank, and the right part of the pressure relief tank is fixedly communicated with a gas outlet pipe; the left portion of the air outlet pipe is upwards vertical and located in the pressure relief tank, and a pressure relief component is installed on the upper portion of the pressure relief tank and located above a left end opening of the air outlet pipe. Water in the transfer tank is pumped through the water pump and fed into the electric refrigerating device, then the water enters the third pipe and the fifth pipe, purified water can be cooled by the electric refrigerating device when the water flows through the cooling tank, the water entering the third pipe and the fifth pipe is cold water, and therefore the left flow guide base and the right flow guide base are cooled; and the water in the fourth pipe flows back into the transfer tank through the auxiliary return pipe, so that the temperature of the water in the transfer tank is also reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas transportation, in particular to a coal mine gas transportation explosion-proof control device. BACKGROUND

[0002] The coal mine gas transportation explosion-proof control device is an important equipment for ensuring the safe transportation of coal mine gas. Common types include water seal fire blocking and explosion venting devices, automatic powder spraying explosion suppression devices, automatic explosion blocking devices, and automatic explosion isolation devices. The Chinese utility model patent with application number 202220914731.7 provides a dry and wet integrated fire blocking and explosion venting device. The device "adds a dehydration and backflow mechanism to reduce the water content of the gas and maintain the water seal fire blocking water level." However, it has the following shortcomings: first, the dehydration mechanism of the device is too simple, resulting in low dehydration efficiency; second, since the fire blocking tank, connecting pipe, and explosion venting and dehydration tank are used simultaneously, the volume of stored gas is larger, and the fire blocking core of the device cannot control the potentially explosive gas within a smaller volume, i.e., the explosion isolation is not timely, thus increasing the risk; third, after the explosion venting door is impacted and opened, the device cannot continue to perform fire and explosion prevention within a short time, still posing a certain risk; in addition, when the existing explosion-proof control device uses a bursting disc for explosion venting, the bursting disc may be ejected after being impacted, which may cause damage to the gas transportation facilities, highlighting the shortcomings of the existing technology. SUMMARY

[0003] The present application aims to provide a coal mine gas transportation explosion-proof control device to solve the technical problems of low gas dehydration efficiency, untimely explosion isolation, inability to perform secondary fire and explosion prevention, and the risk of bursting disc ejection after being impacted.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: The utility model provides a kind of coal mine gas conveying explosion-proof control device, including transfer tank, pressure relief tank, gas pipe, gas inlet pipe, gas outlet pipe, pressure relief component, pipeline assembly, check valve, valve body, valve core, elastic member, No. 1 pipe, No. 2 pipe, water cooling system, the right part of the transfer tank is fixedly communicated with the left part of pressure relief tank by gas pipe, the left part of the transfer tank is fixedly communicated with gas inlet pipe, the right part of the gas inlet pipe is vertically and located in transfer tank, the right part of the pressure relief tank is fixedly communicated with gas outlet pipe, the left part of the gas outlet pipe is vertically and located in pressure relief tank, pressure relief component is installed on the upper part of the pressure relief tank, the pressure relief component is located above the left part port of gas outlet pipe, the bottom of the transfer tank is communicated with the bottom of pressure relief tank by pipeline assembly, check valve is installed in the gas pipe, the check valve includes valve body and valve core, the valve core is located in the right side of valve body and is axially slidingly connected with gas pipe, and elastic member is jointly installed between the valve core and valve body, the valve body is fixed with the inner wall of gas pipe, and is left-right through, the valve core is left-right through, and under the elastic force of elastic member, it has the tendency to move left and can be sealed with valve body to realize the sealing of the through of both to make gas pipe cut-off, the valve body is provided with cavity, and fixedly communicated with No. 1 pipe and No. 2 pipe, No. 1 pipe and No. 2 pipe are arranged in the both ends of valve body, and No. 1 pipe and No. 2 pipe are connected with water cooling system.

[0005] Before use, a certain volume of pure water is injected into the transfer tank through the pipeline assembly, so that the volume of water can flood the right lower part of the gas inlet pipe a certain distance, in use, gas inlet pipe and gas outlet pipe are connected into gas conveying pipeline respectively, so that gas enters from gas inlet pipe, then passes through transfer tank, gas pipe, check valve, pressure relief tank and gas outlet pipe and is discharged, that is, gas pushes the valve core to move right and separates from the valve body to enable it to pass through;When gas explosion occurs in the conveying pipeline, the shock wave enters the pressure relief tank along the gas outlet pipe, then pushes away the pressure relief component, achieves the purpose of instantaneous pressure relief, and when air expands in the pressure relief tank, it is jointly acted on by gas and elastic member, so that the valve core moves left and quickly sticks to the valve body, that is, the check valve is closed, so as to prevent the shock wave and flame from further moving left, that is, to reduce the volume of gas explosion, so that the explosion-proof is more timely;Under the action of water cooling system, cold water can enter the valve body through No. 1 pipe (or No. 2 pipe), then be discharged through No. 2 pipe (or No. 1 pipe), so as to realize the cooling of valve body, and when gas passes through the valve body, heat exchange can be carried out, so as to reduce the temperature of gas, so that water vapor can condense to form condensed water, not only the dehydration efficiency is accelerated, but also the risk of explosion is reduced, the danger is reduced, and the condensed water can enter the pressure relief tank or the transfer tank through the gas pipe, then backflow to the transfer tank through the pipeline assembly, so that the volume of pure water in the transfer tank is controllable as a whole, and at the same time, intrinsic safety type liquid level sensor can be installed in the transfer tank to realize real-time monitoring of the volume of pure water, so as to facilitate timely water replenishment.

[0006] On the basis of the above technical scheme, the valve body comprises a first support frame and left flow guide seats, the gas conveying pipe is horizontally arranged left and right, the gas conveying pipe is fixedly provided with a first support frame, the right end of the first support frame is fixedly provided with a plurality of vertical left flow guide seats, the left flow guide seats are equidistantly arranged from front to back, and gaps are left between the left flow guide seats, the left flow guide seats are hollowed to form cavities, the left end of each left flow guide seat is fixedly provided with a first pipe on the upper part, and a second pipe is fixedly provided on the bottom of the left end, the first pipe and the second pipe are respectively and sealingly fixedly penetrated through the gas conveying pipe, the valve core comprises a support hoop, right flow guide seats and elastic members, the support hoop is sealingly and slidably connected with the inner wall of the gas conveying pipe left and right, and a plurality of vertical right flow guide seats are fixedly arranged on the left part of the support hoop, the right flow guide seats are equidistantly arranged from front to back, and gaps are left between the right flow guide seats, the left end of the support hoop is fixedly provided with a light rod on the front part and the back part, the light rods are parallel to the axial direction of the gas conveying pipe, the left end of the two light rods is fixedly provided with a first support rod, the first support rod is fixedly provided with a first compression spring between the first support frame, and the valve core can make the right flow guide seats and the left flow guide seats close to each other and abut to realize sealing and plugging under the elastic repulsion of the first compression spring.

[0007] In normal use, under the push of the gas, the support hoop overcomes the elastic repulsion of the first compression spring and drives the right flow guide seats to move right, at this time, the left flow guide seats and the right flow guide seats are separated from each other, so that the gas can pass through smoothly, when explosion occurs or the gas conveying is stopped, under the elastic repulsion of the first compression spring, the support hoop drives the right flow guide seats to move left, so that the right flow guide seats and the left flow guide seats abut to each other, sealing and plugging are realized, and the gas passing through the gas conveying pipe from right to left is cut off.

[0008] On the basis of the above technical scheme, the right flow guide seats are hollow, the upper parts of the right flow guide seats are penetratingly provided with third through holes in cooperation with the support hoop, the lower parts of the right flow guide seats are penetratingly provided with fourth through holes in cooperation with the support hoop, a plurality of vertical third pipes are fixedly and communicatively arranged on the top of the gas conveying pipe, and a plurality of vertical fourth pipes are fixedly and communicatively arranged on the bottom of the gas conveying pipe, the third pipes and the fourth pipes can be aligned and communicated with the third through holes and the fourth through holes respectively and simultaneously, the right flow guide seats and the left flow guide seats are not abutted when the third pipes and the fourth pipes are aligned and communicated with the third through holes and the fourth through holes respectively, and the third pipes and the fourth pipes are connected with the water cooling system respectively.

[0009] Further, when the gas is normally conveyed, the support hoop moves right to make the third through holes and the fourth through holes aligned and communicated with the third pipes and the fourth pipes respectively, at this time, the water cooling system can be used to inject cold water into the third pipes and return to the water cooling system through the fourth pipes, so as to cool the right flow guide seats, and then the gas passing through the right flow guide seats can also be cooled, the dehydration efficiency and the cooling efficiency are improved, and the danger is reduced.

[0010] On the basis of the above technical scheme, the support hoop seals and blocks the No. 3 pipe and the No. 4 pipe when the left flow guide base and the right flow guide base are in close contact, a vertical No. 5 pipe is fixedly communicated at the top of the gas conveying pipe, a No. 6 pipe is fixedly arranged at the upper right part of the support hoop, a plurality of No. 6 atomizing nozzles are fixedly communicated with the No. 6 pipe, the support hoop seals and blocks the No. 5 pipe when the No. 3 pipe and the No. 4 pipe are respectively aligned with the No. 3 through hole and the No. 4 through hole, the No. 5 pipe is communicated with the No. 6 pipe when the right flow guide base and the left flow guide base are in close contact to realize sealing and blocking, and the No. 5 pipe is connected with the water cooling system.

[0011] When the gas is normally conveyed, the support hoop seals and blocks the No. 5 pipe, when the gas explosion occurs, the one-way valve is closed, the support hoop and the right flow guide base move to the left, so that the No. 5 pipe is communicated with the No. 6 pipe, then the cooling system injects cooling water into the No. 6 pipe, so that the cooling water is sprayed out through the No. 6 atomizing nozzle to continuously form water mist, so as to achieve good cooling and fire retardant effect, that is, the explosion relief can still play a good explosion-proof effect in a short time.

[0012] On the basis of the above technical scheme, the water cooling system comprises a water pump, a cooling tank, an electric refrigeration device and a secondary return pipe, the water suction pipe of the water pump is communicated with the right part of the transfer tank, the part where the water suction pipe of the water pump is communicated with the transfer tank is not higher than the bottom end of the left part of the gas inlet pipe, the water discharge pipe of the water pump is communicated with the water inlet nozzle of the cooling tank, the water outlet nozzle of the cooling tank is communicated with the No. 3 pipe and the No. 5 pipe through a water distributor and a pipeline, the electric refrigeration device is installed on the cooling tank, the water pump and the electric refrigeration device are connected with a controller and a power supply outside, each No. 4 pipe is communicated with the inner cavity of the transfer tank through a secondary return pipe, and the electric refrigeration device is a semiconductor refrigerator, which is a prior art.

[0013] Further, the water in the transfer tank is extracted by the water pump and then sent into the electric refrigeration device, and then into the No. 3 pipe and the No. 5 pipe, so that the water in the No. 3 pipe and the No. 5 pipe is cooled by the electric refrigeration device when flowing through the cooling tank, and the water in the No. 4 pipe is returned to the transfer tank through the secondary return pipe, so that the temperature of the water in the transfer tank is also reduced, so that the gas can be cooled in three places, thereby reducing the risk of explosion, that is, reducing the danger.

[0014] On the basis of the above technical scheme, the air inlet pipe is provided with a rotary valve for controlling the on-off, the valve rod of the rotary valve is vertically arranged, a gear is coaxially fixed on the valve rod, the rotary valve is located in the transfer tank, a horizontal guide frame is fixed on the inner wall of the transfer tank, a rack frame is slidably connected to the guide frame, the rack frame is engaged with the gear, the rack frame is fixed with a first supporting rod, when the supporting hoop moves to the left to make the right flow guide seat fit the left flow guide seat, the gear is rotated through the rack frame to make the rotary valve close, and when the supporting hoop moves to the right to make the right flow guide seat separate from the left flow guide seat, the gear is rotated through the rack frame to make the rotary valve open.

[0015] Further, when the normal gas is conveyed, the supporting hoop moves to the right to make the rotary valve open through the cooperation of the rack frame and the gear, when the right flow guide seat fits the left flow guide seat to realize the closing of the one-way valve, the rotary valve is also closed through the cooperation of the rack frame and the gear, so that the gas continues to fill into the transfer tank is prevented, not only the source of the gas is blocked, the possibility of continuous explosion is reduced, but also the possibility that the pure water is squeezed to be unable to return to the transfer tank is prevented, that is, the pressure in the transfer tank is kept in a stable range, and the danger is reduced.

[0016] On the basis of the above technical scheme, the pressure relief assembly comprises a bursting disc, a hook, a limiting nut, a blocking net and a hanging ring, the upper portion of the pressure relief tank is penetrated, the bursting disc which is sealingly fitted with the pressure relief tank is fastened by a fastener at the penetrated portion, a plurality of hooks are fixed on the top end of the outer wall of the pressure relief tank in a circumferential arrangement, each hook is respectively inserted with a hanging ring, and is respectively threadedly connected with a limiting nut, the limiting nut is used to prevent the hanging ring from being separated from the hook, the blocking net is fixed with the hooks, the blocking net is made of a flame-retardant flexible material, such as para-aramid "Nomex", the blocking net can be stretched upward to intercept the upward moving bursting disc, the pipeline assembly comprises a water flow pipe, a main return pipe and a valve, the upper portion of the transfer tank is penetrated, and a sealing cover is fastened by a fastener at the penetrated portion, the bottom end of the transfer tank is fixedly connected with a vertical water flow pipe, the middle portion of the water flow pipe is fixedly connected with the bottom end of the pressure relief tank through a main return pipe, the bottom portion of the water flow pipe is provided with a valve for controlling the on-off, one end of the auxiliary return pipe is fixedly connected with the main return pipe, and the other end is connected with each No.

[0017] Further, when the shock wave enters into the pressure relief tank along the air outlet pipe, the shock wave breaks the bursting disc to realize pressure relief, the bursting disc moves upward and is intercepted by the blocking net, so that the moving range of the bursting disc is controllable, the damage to surrounding facilities is reduced, the cover plate is opened to clean the transfer tank, the valve is opened to make the pure water in the transfer tank flow out through the water flow pipe or to conveniently supplement the pure water into the transfer tank, and the valve is kept closed during normal gas conveying; and the condensed water in the pressure relief tank enters into the transfer tank through the main return pipe.

[0018] On the basis of the above technical scheme, the inner wall of the through portion of the upper portion of the pressure relief tank is fixed with a vertical inner support cylinder, the outer wall of the through portion of the upper portion of the pressure relief tank is fixed with a vertical outer support cylinder, the inner support cylinder is sealingly and slidably connected with a horizontal piston ring in an up-down direction, the outer support cylinder stores an annular air bag capable of being folded and bent, the bottom of the air bag is fixed with the outer wall of the pressure relief tank, a plurality of air vents are vertically arranged through the upper portion of the pressure relief tank, each air vent is in communication with the inner cavity of the inner support cylinder and the inner cavity of the air bag, the outer support cylinder is combined with an annular end cover, a plurality of vertical No. 7 compression springs are fixed between the top end of the piston ring and the inner wall of the pressure relief tank, the piston ring has a downward moving trend under the elastic pressure of the No. 7 compression springs, the space formed by the piston ring, the inner support cylinder and the air bag stores inert gas, a plurality of horizontal and closed guide cylinders are fixed on the outer wall of the inner support cylinder in a circumferential direction, each guide cylinder is horizontally slidably connected with a pin, the pin and the guide cylinder are jointly fixed with a No. 8 compression spring, the pin has a horizontal sliding trend toward the axis of the inner support cylinder under the elastic repulsive force of the No. 8 compression spring, the end of the pin close to the axis of the inner support cylinder is wedge-shaped, a plurality of insertion holes are equally angularly arranged on the outer circumferential wall of the piston ring, each insertion hole is in up-down correspondence with each pin, a plurality of wedge surfaces are arranged on the outer circumferential edge of the top end of the piston ring, each wedge surface is in up-down correspondence with each pin, the piston ring is moved upward to a certain position to extrude the pin into the guide cylinder through the wedge surface and to realize the insertion of the pin into the insertion hole, and the wedge-shaped part of the pin can be completely inserted into the insertion hole when the pin is inserted into the insertion hole.

[0019] Further, when the gas is normally delivered, the piston ring moves downward under the elastic repulsion of the seventh compression spring, at this time, the air bag is shriveled, and the insertion hole is below the pin. When the gas explosion occurs, the gas in the pressure relief tank expands instantaneously, thereby pushing the piston ring to move upward, i.e. extruding the inert gas to enter the air bag through the air hole, so that the air bag expands by opening the end cap, and with the upward movement of the piston ring, the wedge-shaped part of the pin is pushed by the wedge surface, so that the pin is retracted into the guide cylinder until the pin is inserted into the insertion hole under the elastic repulsion of the eighth compression spring, thereby limiting the position of the piston ring, and then maintaining the fullness of the air bag. In this process, the rupture disc moves upward and falls, so that it can be buffered by the air bag, reducing the damage to the pressure relief tank and reducing the risk.

[0020] On the basis of the above technical scheme, the nozzle is horizontally and annularly fixed in the pressure relief tank, the nozzle is inserted into the outer support cylinder, the lower left part of the nozzle is fixed and communicated with the vertical seventh pipe, the middle left part of the seventh pipe is fixed and communicated with the horizontal eighth pipe, the eighth pipe penetrates through and is sealingly fixed with the pressure relief tank, the eighth pipe is connected with the water cooling system, the outlet nozzle of the cooling tank is connected with the water distributor and the pipeline, the piston is sealingly and slidably connected in the seventh pipe, the valve plate is fixed on the top of the piston, the valve cylinder is fixed on the upper part of the valve plate, the outer wall of the valve cylinder is sealingly and slidably connected with the seventh pipe, the outer magnet is fixed in the piston, the valve plate, the piston and the outer magnet penetrate through the constant pressure hole, the valve cylinder can seal and block the communication between the seventh pipe and the eighth pipe, the gap is left between the valve cylinder and the piston, the gap is left between the valve cylinder and the valve plate, the limiting ring is fixed on the upper part of the inner wall of the seventh pipe, when the valve cylinder moves upward to a certain position, the top of the valve cylinder can be attached to the bottom of the limiting ring, when the top of the valve cylinder is attached to the bottom of the limiting ring, the gap between the valve cylinder and the piston can be communicated with the eighth pipe, a plurality of seventh atomizing nozzles are fixed on the circumference of the seventh pipe at equal angles, each seventh atomizing nozzle penetrates through and is sealingly fixed with the inner support cylinder, the inner permanent magnet is fixed in the piston ring, the inner permanent magnet can be left-right corresponding with the outer magnet and magnetically adsorbed, when the inner permanent magnet and the outer magnet are magnetically adsorbed, the piston, the valve plate and the valve cylinder move up and down with the piston ring.

[0021] Furthermore, during normal gas delivery, the pressure inside the pressure relief tank is relatively low, and the piston ring is in a lower position. At this time, the valve cylinder seals the connection between pipes 7 and 8. When an explosion occurs, the piston ring moves upward, thereby using the magnetic attraction of the inner permanent magnet and the outer magnet to move the valve body, valve plate, and valve cylinder upward. The constant pressure orifice ensures that the piston, valve plate, and valve cylinder move smoothly without being obstructed by the pressure difference. When the insertion hole is inserted with the pin, the gap between the valve cylinder and the piston connects with the connection between pipes 7 and 8, and the top of the valve cylinder touches the bottom of the limit ring. At this time, the water supply from the water cooling system can enter the nozzle and then be sprayed out through the 7 atomizing nozzle to form a water mist, thereby achieving a cooling and flame-retardant effect from top to bottom inside the pressure relief tank. That is, after the explosion, it can still play an explosion-proof role for a short time.

[0022] Based on the above technical solution, the pressure relief component also includes a protective cloth. Multiple horizontal limiting rods are fixed at equal angles on the inner circumference of the inner support cylinder. When the top of the piston ring is in contact with the outer wall of the limiting rod, the pin can be inserted into the insertion hole. The protective cloth is made of PVC coated polyester cloth. The protective cloth covers the end cap and the rupture disc, and the bottom is in contact with the outer wall of the pressure relief tank. Adhesive can be used for local fixation here to prevent accidental detachment.

[0023] Furthermore, the limit rod can limit the upward movement distance of the piston ring, preventing the compression of the No. 7 atomizing nozzle. By setting a protective cloth to cover the end cap and the barrier net, the corrosion from sun and rain can be reduced, thus extending the service life.

[0024] Compared with the prior art, the present invention has the following advantages: The present invention uses a water pump to draw water from the transfer tank and send it into an electric refrigeration device, and then into pipes No. 3 and No. 5. When flowing through the cooling tank, the pure water is cooled by the electric refrigeration device, so that the water entering pipes No. 3 and No. 5 is cold water, thereby cooling the left and right guide seats. The water in pipe No. 4 flows back to the transfer tank through the auxiliary return pipe, thus reducing the temperature of the water in the transfer tank. Therefore, the gas can be cooled in three places, achieving efficient condensation and dehydration, thereby reducing the risk of explosion, that is, reducing the danger. When the right guide seat and the left guide seat come into contact to close the one-way valve, the rotary valve is also closed through the cooperation of the rack and pinion and the gear, thereby preventing the gas from continuing to flow into the transfer tank. This not only blocks the source of the gas, but also makes the explosion isolation more timely and reduces the possibility of further explosion. When the shock wave enters into the pressure relief tank along the air outlet pipe, the shock wave breaks the bursting disc to realize pressure relief, the bursting disc moves upward and is intercepted by the blocking net, so that the moving range of the bursting disc is controllable, and damage to surrounding facilities is reduced; when gas explosion occurs, the gas in the pressure relief tank expands instantaneously, so as to push the piston ring to move upward, that is, to extrude the inert gas to enter into the air bag through the air hole, so that the air bag opens the end cover to expand and keep, the bursting disc completes upward movement and falls, so as to be buffered by the air bag, reduce damage to the pressure relief tank, and reduce danger. Water can be injected into the nozzle and the No. 6 pipe through the water cooling system, and then sprayed out through the No. 6 atomizing nozzle and the No. 7 atomizing nozzle to form water mist, so as to realize the cooling and fire-retardant effect in the pressure relief tank, that is, the secondary fireproof and explosion-proof effect can still be achieved in a short time after pressure relief. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic view of the shaft side structure of the present application.

[0026] Figure 2 It is a schematic view of the shaft side structure of the present application when the blocking net stretches upward.

[0027] Figure 3 It is a schematic view of the local enlarged structure at A of the present application.

[0028] Figure 4 It is a schematic view of the local front section structure of the present application.

[0029] Figure 5 It is a schematic view of the local enlarged structure at B of the present application.

[0030] Figure 6 It is a schematic view of the local enlarged structure at C of the present application.

[0031] Figure 7 It is a schematic view of the structure of the piston, the valve plug and the valve cylinder of the present application.

[0032] Figure 8 It is a schematic view of the cooperation of the rack and the gear of the present application.

[0033] Figure 9 It is a schematic view of the cooperation of the piston ring, the pin and the nozzle of the present application.

[0034] Figure 10 It is a schematic view of the cooperation of the valve core and the valve body of the present application.

[0035] In the figure: 1, transfer tank, 2, pressure relief tank, 3, gas delivery pipe, 4, gas inlet pipe, 5, gas outlet pipe, 6, pressure relief component, 7, pipe assembly, 12, No. 1 pipe, 13, No. 2 pipe, 15, No. 1 support frame, 16, left flow guide seat, 17, support hoop, 18, right flow guide seat, 19, No. 1 support rod, 20, No. 1 compression spring, 21, No. 3 through hole, 22, No. 4 through hole, 23, No. 3 pipe, 24, No. 4 pipe, 25, No. 5 pipe, 26, No. 6 pipe, 27, No. 6 atomizing nozzle, 28, water pump, 29, cooling tank, 30, electric refrigeration device, 31, auxiliary return pipe, 32, rotary valve, 33, gear, 34, guide frame, 35, rack frame, 36, bursting disc, 37, hook, 38, limit nut, 39, barrier net, 40, hanging ring, 41, cover plate, 42, water flow pipe, 43, main return pipe, 44, valve, 45, inner support cylinder, 46, outer support cylinder, 47, piston ring, 48, air bag, 49, air vent, 50, end cover, 51, No. 7 compression spring, 52, guide cylinder, 53, pin, 54, No. 8 compression spring, 55, insertion hole, 56, wedge surface, 57, nozzle, 58, No. 7 pipe, 59, No. 8 pipe, 60, piston, 61, valve plate, 62, valve cylinder, 63, outer magnet, 64, constant pressure hole, 65, limit ring, 66, No. 7 atomizing nozzle, 67, protective cloth, 68, limit rod, 69, polished rod, 70, inner permanent magnet. DETAILED DESCRIPTION

[0036] The application will be further described in detail below in conjunction with the drawings and specific examples.

[0037] As Figures 1-10As shown, a coal mine gas conveying explosion-proof control device, including transfer tank 1, pressure relief tank 2, gas pipe 3, gas inlet pipe 4, gas outlet pipe 5, pressure relief components 6, pipe assembly 7, check valve, valve body, valve core, elastic element, No. 12 pipe, No. 13 pipe, water cooling system, the right part of the transfer tank 1 and the left part of the pressure relief tank 2 are fixedly communicated through the gas pipe 3, the left part of the transfer tank 1 is fixedly communicated with the gas inlet pipe 4, the right part of the gas inlet pipe 4 is vertically downward and located in the transfer tank 1, the right part of the gas outlet pipe 5 is fixedly communicated with the pressure relief tank 2, the left part of the gas outlet pipe 5 is vertically upward and located in the pressure relief tank 2, the pressure relief tank 2 is installed on the upper part of the pressure relief component 6, the pressure relief component 6 is located above the left part of the gas outlet pipe 5 port, the bottom of the transfer tank 1 and the bottom of the pressure relief tank 2 are communicated through the pipe assembly 7, the check valve is installed in the gas pipe 3, the check valve includes valve body and valve core, the valve core is located on the right side of the valve body and is axially slidingly connected with the gas pipe 3, and the elastic element is installed between the valve core and the valve body, the valve body is fixed with the inner wall of the gas pipe 3 and penetrates left and right, the valve core penetrates left and right, and has a tendency to move left under the elastic force of the elastic element and can be fitted with the valve body to seal the penetration of the two to make the gas pipe 3 stop, the valve body is provided with a cavity and is fixedly communicated with No. 12 pipe and No. 13 pipe, No. 12 pipe and No. 13 pipe are arranged on both ends of the valve body, No. 12 pipe and No. 13 pipe are connected with the water cooling system.

[0038] Before use, a certain volume of pure water is injected into the transfer tank 1 through the pipe assembly 7, so that the volume of water can submerge the right lower part of the air inlet pipe 4 by a certain distance, and during use, the air inlet pipe 4 and the air outlet pipe 5 are connected to the gas conveying pipe respectively, so that the gas enters from the air inlet pipe 4, then passes through the transfer tank 1, the gas conveying pipe 3, the one-way valve, the pressure relief tank 2 and the air outlet pipe 5, and is discharged, that is, the gas pushes the valve core to move right and separates from the valve body to enable passing; when the gas in the conveying pipe explodes, the shock wave enters the pressure relief tank 2 along the air outlet pipe 5, then pushes open the pressure relief component 6, achieves the purpose of instantaneous pressure relief, and when the air expands in the pressure relief tank 2, is jointly acted on by the gas and the elastic member, makes the valve core move left and quickly sticks to the valve body, that is, the one-way valve is closed, thereby preventing the shock wave and the flame from further moving left, that is, reducing the volume of gas explosion, so that the explosion isolation is more timely; and under the action of the water cooling system, cold water can enter the valve body through the first pipe 12 (or the second pipe 13), then is discharged through the second pipe 13 (or the first pipe 12), so as to realize the cooling of the valve body, and the gas can exchange heat when passing through the valve body, so as to reduce the temperature, so that the water vapor can condense to form condensed water, not only speeds up the dehydration efficiency, but also reduces the risk of explosion and the danger of the gas with reduced temperature, and the condensed water can enter the pressure relief tank 2 or the transfer tank 1 through the gas conveying pipe 3, then flows back to the transfer tank 1 through the pipe assembly 7, so that the volume of pure water in the transfer tank 1 is generally controllable, and at the same time, an intrinsically safe liquid level sensor can be installed in the transfer tank 1 to realize real-time monitoring of the volume of pure water, so as to facilitate timely water replenishment.

[0039] The valve body comprises a support frame 15, left guide seats 16, the gas conveying pipe 3 is horizontally arranged, the gas conveying pipe 3 is fixed with the support frame 15, the support frame 15 is fixed with a plurality of vertical left guide seats 16 at the right end, the left guide seats 16 are arranged at equal intervals from front to back, and gaps are left between the left guide seats 16, the left guide seats 16 are hollowed to form cavities, the left end of each left guide seat 16 is fixed with a first pipe 12 at the upper part, and the left end is fixed with a second pipe 13 at the bottom, the first pipe 12 and the second pipe 13 are respectively and sealingly fixed with the gas conveying pipe 3, the valve core comprises a support hoop 17, right guide seats 18, the elastic member comprises a polished rod 69, a first support rod 19, and a first compression spring 20, the support hoop 17 is sealingly and slidably connected with the inner wall of the gas conveying pipe 3, and is fixed with a plurality of vertical right guide seats 18 at the left part, the right guide seats 18 are arranged at equal intervals from front to back, and gaps are left between the right guide seats 18, the support hoop 17 is fixed with a polished rod 69 at the left end of the front and rear parts, the polished rod 69 is parallel to the axial direction of the gas conveying pipe 3, the left ends of the two polished rods 69 are jointly fixed with a first support rod 19, the first support rod 19 is jointly fixed with a first compression spring 20 between the support frame 15, and the valve core can make the right guide seats 18 and the left guide seats 16 close to each other and seal and block each other under the elastic repulsive force of the first compression spring 20.

[0040] In normal use, under the push of the gas, the support hoop 17 drives the right guide seats 18 to move rightward by overcoming the elastic repulsive force of the first compression spring 20, at this time, the left guide seats 16 and the right guide seats 18 are separated from each other, so that the gas can pass smoothly, when explosion occurs or the gas conveying is stopped, under the elastic repulsive force of the first compression spring 20, the support hoop 17 drives the right guide seats 18 to move leftward, so that the right guide seats 18 and the left guide seats 16 are close to each other, sealing and blocking are realized, so as to cut off the gas passing through the gas conveying pipe 3 from right to left.

[0041] The right guide seats 18 are hollow, the upper parts of the right guide seats 18 are jointly and vertically penetrated by third through holes 21 with the support hoop 17, the lower parts of the right guide seats 18 are jointly and vertically penetrated by fourth through holes 22 with the support hoop 17, the top of the gas conveying pipe 3 is fixedly connected with a plurality of vertical third pipes 23, and the bottom is fixedly connected with a plurality of vertical fourth pipes 24, the third pipes 23 and the fourth pipes 24 can be aligned and communicated with the third through holes 21 and the fourth through holes 22 respectively and simultaneously, the right guide seats 18 and the left guide seats 16 are not close to each other when the third pipes 23 and the fourth pipes 24 are aligned and communicated with the third through holes 21 and the fourth through holes 22 respectively, and the third pipes 23 and the fourth pipes 24 are connected with the water cooling system respectively.

[0042] Further, when the gas is normally transported, the support hoop 17 moves right to make the third through hole 21 and the fourth through hole 22 respectively align with the third pipe 23 and the fourth pipe 24, at this time, the water cooling system can inject cold water into the third pipe 23, and return to the water cooling system through the fourth pipe 24, so as to cool the right guide seat 18, and then the gas can be cooled when passing through the right guide seat 18, thereby improving the dehydration efficiency and cooling efficiency, and reducing the danger.

[0043] The support hoop 17 seals and blocks the third pipe 23 and the fourth pipe 24 when the left guide seat 16 is attached to the right guide seat 18, a vertical fifth pipe 25 is fixedly communicated at the top of the gas conveying pipe 3, a sixth pipe 26 is fixedly arranged at the upper right part of the support hoop 17, a plurality of sixth atomizing nozzles 27 are fixedly communicated with the sixth pipe 26, the support hoop 17 seals and blocks the fifth pipe 25 when the third pipe 23 and the fourth pipe 24 are respectively aligned with the third through hole 21 and the fourth through hole 22, the fifth pipe 25 is communicated with the sixth pipe 26 when the right guide seat 18 is attached to the left guide seat 16 to realize sealing and blocking, and the fifth pipe 25 is connected with the water cooling system.

[0044] When the gas is normally transported, the support hoop 17 seals and blocks the fifth pipe 25, when the gas explosion occurs, the one-way valve is closed, the support hoop 17 and the right guide seat 18 move left, so that the fifth pipe 25 is communicated with the sixth pipe 26, and then the cooling system injects cooling water into the sixth pipe 26, so that the cooling water is sprayed out through the sixth atomizing nozzle 27 to form water mist, thereby achieving good cooling and fire extinguishing effect, that is, the explosion relief can still play a good explosion-proof effect in a short time.

[0045] The water cooling system comprises a water pump 28, a cooling tank 29, an electric refrigeration device 30, and a secondary return pipe 31, the water suction pipe of the water pump 28 is communicated with the right part of the transfer tank 1, the part of the water suction pipe of the water pump 28 communicated with the transfer tank 1 is not higher than the bottom end of the left part of the gas inlet pipe 4, the water discharge pipe of the water pump 28 is communicated with the water inlet nozzle of the cooling tank 29, the water outlet nozzle of the cooling tank 29 is communicated with the third pipe 23 and the fifth pipe 25 through a water distributor and a pipeline, the cooling tank 29 is installed with the electric refrigeration device 30, the water pump 28 and the electric refrigeration device 30 are connected with the controller and the power supply outside, each fourth pipe 24 is communicated with the inner cavity of the transfer tank 1 through the secondary return pipe 31, and the electric refrigeration device 30 is a semiconductor refrigerator, which is a prior art.

[0046] Further, the water in the transfer tank 1 is pumped by the water pump 28 and sent into the electric refrigeration device 30, and then into the No. 3 pipe 23 and the No. 5 pipe 25, and the pure water is cooled by the electric refrigeration device 30 when flowing through the cooling tank 29, so that the water entering the No. 3 pipe 23 and the No. 5 pipe 25 is cold water, and the water in the No. 4 pipe 24 is returned to the transfer tank 1 through the auxiliary return pipe 31, so that the temperature of the water in the transfer tank 1 is also lowered, and therefore the gas can be cooled through three places, thereby reducing the risk of explosion, i.e. reducing the danger.

[0047] The air inlet pipe 4 is provided with a rotary valve 32 for controlling the on-off, the valve rod of the rotary valve 32 is vertically arranged, and a gear 33 is coaxially fixed on the valve rod, the rotary valve 32 is located in the transfer tank 1, a horizontal guide frame 34 is fixed on the inner wall of the transfer tank 1, a rack frame 35 is slidably connected to the guide frame 34, the rack frame 35 is engaged with the gear 33, the rack frame 35 is fixed with the No. 1 supporting rod 19, when the supporting hoop 17 moves to the left to make the right flow guide seat 18 fit with the left flow guide seat 16, the gear 33 is rotated through the rack frame 35 to make the rotary valve 32 close, and when the supporting hoop 17 moves to the right to make the right flow guide seat 18 disengage from the left flow guide seat 16, the gear 33 is rotated through the rack frame 35 to make the rotary valve 32 open.

[0048] Further, when the gas is normally delivered, the supporting hoop 17 moves to the right to make the rotary valve 32 open through the cooperation of the rack frame 35 and the gear 33, when the right flow guide seat 18 fits with the left flow guide seat 16 to realize the closing of the one-way valve, the rotary valve 32 is also closed through the cooperation of the rack frame 35 and the gear 33, thereby preventing the gas from continuing to fill into the transfer tank 1, not only cutting off the source of the gas and reducing the possibility of continuous explosion, but also preventing the gas from continuing to fill in to cause the pure water to be squeezed and unable to return to the transfer tank 1, i.e. keeping the pressure in the transfer tank 1 within a stable range, thereby reducing the danger.

[0049] The pressure relief assembly comprises a bursting disc 36, a hook 37, a limiting nut 38, a barrier net 39, a hanging ring 40, the upper portion of the pressure relief tank 2 is penetrated, and the bursting disc 36 is tightly fastened to the pressure relief tank 2 by fasteners, the top of the outer wall of the pressure relief tank 2 is circumferentially arranged and fixed with a plurality of hooks 37, each of the hooks 37 is respectively inserted with a hanging ring 40, and is respectively threadedly connected with a limiting nut 38, the limiting nut 38 is used to prevent the hanging ring 40 from being separated from the hook 37, each of the hooks 37 is commonly fixed with the barrier net 39, the barrier net 39 is made of a flame-retardant flexible material, such as para-aramid “Nomex”, the barrier net 39 can be stretched upwards to intercept the upwardly moving bursting disc 36, the pipeline assembly 7 comprises a water flow pipe 42, a main return pipe 43, and a valve 44, the upper portion of the transfer tank 1 is penetrated, and the penetrated portion is tightly covered with a cover plate 41 by fasteners, the bottom end of the transfer tank 1 is fixedly connected with a vertical water flow pipe 42, the middle portion of the water flow pipe 42 is fixedly connected with the bottom end of the pressure relief tank 2 through the main return pipe 43, the bottom of the water flow pipe 42 is provided with a valve 44 for controlling the on-off, one end of the auxiliary return pipe 31 is fixedly connected with the main return pipe 43, and the other end is connected with each No. 4 pipe 24 through a water distributor.

[0050] Further, when the shock wave enters the pressure relief tank 2 along the gas outlet pipe 5, the shock wave breaks the bursting disc 36 to achieve pressure relief, the bursting disc 36 is intercepted by the barrier net 39 after moving upwards, so that the moving range of the bursting disc 36 is controllable, and the damage to the surrounding facilities is reduced, the transfer tank 1 can be cleaned by opening the cover plate 41, the valve 44 is opened to make the pure water in the transfer tank 1 flow out through the water flow pipe 42 or conveniently supplement the pure water in the transfer tank 1 through the water flow pipe 42, and the valve 44 is kept closed during normal gas conveying; and the condensed water in the pressure relief tank 2 enters the transfer tank 1 through the main return pipe 43.

[0051] The inner wall of the through part of the upper part of the pressure relief tank 2 is fixed with a vertical inner support cylinder 45, the outer wall of the through part of the upper part of the pressure relief tank 2 is fixed with a vertical outer support cylinder 46, the upper and lower part of the inner support cylinder 45 is sealingly and slidably connected with a horizontal piston ring 47, the inner support cylinder 45 is stored with an annular air bag 48 capable of being folded and bent, the bottom of the air bag 48 is fixed with the outer wall of the pressure relief tank 2, the upper part of the pressure relief tank 2 is penetrated by a plurality of air holes 49, each of the air holes 49 is simultaneously communicated with the inner cavity of the inner support cylinder 45 and the inner cavity of the air bag 48, the outer cover of the outer support cylinder 46 is combined with an annular end cover 50, the top end of the piston ring 47 and the inner wall of the pressure relief tank 2 are commonly fixed with a plurality of vertical seventh compression springs 51, the piston ring 47 has a downward moving trend under the elastic pressure of the seventh compression spring 51, the space formed by the piston ring 47, the inner support cylinder 45 and the air bag 48 is stored with inert gas, the outer wall of the inner support cylinder 45 is circumferentially arranged and fixed with a plurality of horizontal and closed guide cylinders 52, each of the guide cylinders 52 is horizontally and slidably connected with a pin 53, the pin 53 and the guide cylinder 52 are commonly fixed with an eighth compression spring 54, the pin 53 has a horizontal sliding trend towards the axis of the inner support cylinder 45 under the elastic repulsive force of the eighth compression spring 54, the end of the pin 53 close to the axis of the inner support cylinder 45 is wedge-shaped, the outer circumferential wall of the piston ring 47 is circumferentially and equiangularly provided with a plurality of insertion holes 55, each of the insertion holes 55 is correspondingly above and below each of the pins 53, the outer circumferential edge of the top end of the piston ring 47 is provided with a plurality of wedge surfaces 56, each of the wedge surfaces 56 is correspondingly above and below each of the pins 53, the piston ring 47 is upwardly moved to a certain position to be able to extrude the pin 53 into the guide cylinder 52 and to realize the insertion of the pin 53 and the insertion hole 55 through the wedge surface 56, and the wedge-shaped part of the pin 53 can be completely inserted into the insertion hole 55 when the pin 53 and the insertion hole 55 are inserted.

[0052] Further, when the gas is normally conveyed, the piston ring 47 is downwardly moved under the elastic repulsive force of the seventh compression spring 51, at this time, the air bag 48 is shriveled, and the insertion hole 55 is below the pin 53, when the gas explosion occurs, the gas in the pressure relief tank 2 is instantaneously expanded, thereby pushing the piston ring 47 to be upwardly moved, i.e. extruding the inert gas to enter the air bag 48 through the air hole 49, so that the air bag 48 is expanded by opening the end cover 50, with the upward movement of the piston ring 47, the wedge-shaped part of the pin 53 is pushed by the wedge surface 56, so that the pin 53 is retracted into the guide cylinder 52, until the pin 53 is inserted into the insertion hole 55 under the elastic repulsive force of the eighth compression spring 54, thereby limiting the position of the piston ring 47, and then keeping the air bag 48 full, in this process, the bursting disc 36 is completed to be upwardly moved and to fall, thereby being buffered by the air bag 48, reducing the damage to the pressure relief tank 2 and reducing the risk.

[0053] The horizontal and annular nozzle 57 is fixed in the pressure relief tank 2, and is inserted into the outer supporting cylinder 45 in a gap. The lower left part of the nozzle 57 is fixedly connected with the vertical No. 7 pipe 58. The middle left part of the No. 7 pipe 58 is fixedly connected with the horizontal No. 8 pipe 59. The No. 8 pipe 59 penetrates through and is fixedly sealed with the pressure relief tank 2. The No. 8 pipe 59 is connected with the water cooling system. The No. 8 pipe 59 is connected with the water outlet nozzle of the cooling tank 29 through a water distributor and a pipeline. The piston 60 is slidably connected in the No. 7 pipe 58. The top end of the piston 60 is fixedly connected with the vertical valve plate 61. The upper part of the valve plate 61 is fixedly connected with the vertical valve cylinder 62. The outer wall of the valve cylinder 62 is slidably connected with the No. 7 pipe 58. The piston 60 is fixedly wrapped with the outer magnet 63. The valve plate 61, the piston 60 and the outer magnet 63 are penetrated by the constant pressure hole 64. The valve cylinder 62 can seal and block the connection between the No. 7 pipe 58 and the No. 8 pipe 59. The valve cylinder 62 and the piston 60 are spaced apart. The valve cylinder 62 and the valve plate 61 are spaced apart. The upper part of the inner wall of the No. 7 pipe 58 is fixedly connected with the limiting ring 65. When the valve cylinder 62 is moved upward to a certain position, the top end of the valve cylinder 62 can be in close contact with the bottom end of the limiting ring 65. When the top end of the valve cylinder 62 is in close contact with the bottom end of the limiting ring 65, the space between the valve cylinder 62 and the piston 60 can be connected with the No. 8 pipe 59. The No. 7 pipe 58 is fixedly connected with a plurality of No. 7 atomizing nozzles 66 at equal angles. Each No. 7 atomizing nozzle 66 penetrates and is fixedly sealed with the inner supporting cylinder 45. The inner permanent magnet 70 is fixedly wrapped in the piston ring 47. The inner permanent magnet 70 can be magnetically attracted with the outer magnet 63. When the inner permanent magnet 70 is magnetically attracted with the outer magnet 63, the piston 60, the valve plate 61 and the valve cylinder 62 are moved upward with the piston ring 47.

[0054] Further, when the gas is normally delivered, the pressure in the pressure relief tank 2 is small, and the piston ring 47 is in the lower position. At this time, the valve cylinder 62 seals and blocks the connection between the No. 7 pipe 58 and the No. 8 pipe 59. When an explosion occurs, the piston ring 47 moves upward, so that the valve body, the valve plate 61 and the valve cylinder 62 are moved upward by the magnetic attraction between the inner permanent magnet 70 and the outer magnet 63. The constant pressure hole 64 ensures that the piston 60, the valve plate 61 and the valve cylinder 62 move smoothly and are not hindered by the pressure difference. When the insertion hole 55 is inserted with the pin 53, the space between the valve cylinder 62 and the piston 60 is connected with the connection between the No. 7 pipe 58 and the No. 8 pipe 59, and the top end of the valve cylinder 62 is in contact with the bottom end of the limiting ring 65. At this time, the water supply of the water cooling system can enter the nozzle 57, and then the water mist is sprayed out through the No. 7 atomizing nozzle 66, so as to realize the cooling and fire extinguishing effect from top to bottom in the pressure relief tank 2. That is, the explosion-proof effect can still be achieved in a short time after the explosion relief.

[0055] The pressure relief component 6 further comprises a protective cloth 67, a plurality of horizontal limiting rods 68 are fixed on the inner circumference of the inner supporting cylinder 45 at equal angles, the pin 53 can be inserted into the insertion hole 55 when the top end of the piston ring 47 is in close contact with the outer wall of the limiting rod 68, the protective cloth 67 is made of PVC coated polyester cloth, the protective cloth 67 covers the top of the end cover 50 and the bursting disc 36, and the bottom is in close contact with the outer wall of the pressure relief tank 2, and the local fixation can be achieved by using adhesion to prevent accidental falling.

[0056] Further, the limiting rods 68 can limit the upward movement distance of the piston ring 47, so as to avoid extruding the seventh atomizing nozzle 66, and the protective cloth 67 is arranged to cover the end cover 50 and the blocking net 39, so as to reduce the erosion caused by sunshine and rain, and prolong the service life.

[0057] The above describes the preferred embodiments of the present application, and for those skilled in the art, according to the teaching of the present application, the changes, modifications, replacements and variations of the embodiments without departing from the principles and spirits of the present application still fall into the protection scope of the present application.

Claims

1. A coal mine gas conveying explosion-proof control device, including a transfer tank (1), a pressure relief tank (2), a gas conveying pipe (3), an air inlet pipe (4), an air outlet pipe (5), a pressure relief component (6), a pipe assembly (7), a one-way valve, a valve body, a valve core, an elastic member, a No. 1 pipe (12), a No. 2 pipe (13), a water cooling system, the right part of the transfer tank (1) is fixedly communicated with the left part of the pressure relief tank (2) through the gas conveying pipe (3), the left part of the transfer tank (1) is fixedly communicated with the air inlet pipe (4), the right part of the air inlet pipe (4) is vertically downward and located in the transfer tank (1), the right part of the pressure relief tank (2) is fixedly communicated with the air outlet pipe (5), the left part of the air outlet pipe (5) is vertically upward and located in the pressure relief tank (2), the upper part of the pressure relief tank (2) is installed with the pressure relief component (6), the pressure relief component (6) is located above the left part port of the air outlet pipe (5), the bottom of the transfer tank (1) and the bottom of the pressure relief tank (2) are communicated through the pipe assembly (7), characterized in that: The gas pipe (3) is provided with a one-way valve, which comprises a valve body and a valve core. The valve core is located on the right side of the valve body and is axially slidingly connected with the gas pipe (3). An elastic member is arranged between the valve core and the valve body. The valve body is fixed to the inner wall of the gas pipe (3) and penetrates left and right. The valve core penetrates left and right and has a tendency to move left under the elastic force of the elastic member to abut against the valve body to seal and block the penetration of the valve body, thereby cutting off the gas pipe (3). The valve body is provided with a cavity and is fixedly connected with a first pipe (12) and a second pipe (13). The first pipe (12) and the second pipe (13) are arranged on the two ends of the valve body. The first pipe (12) and the second pipe (13) are connected with the water cooling system.

2. The coal mine gas conveying explosion-proof control device according to claim 1, characterized in that: The valve body comprises a first support frame (15) and a left flow guide seat (16). The gas pipe (3) is arranged horizontally. The gas pipe (3) is fixedly provided with a first support frame (15). The right end of the first support frame (15) is fixedly provided with a plurality of vertical left flow guide seats (16). The left flow guide seats (16) are arranged at equal intervals from front to back and have gaps between each other. The left flow guide seats (16) are hollow inside to form cavities. The left ends of the left flow guide seats (16) are fixedly provided with a first pipe (12) and a second pipe (13) on the upper part and the bottom part, respectively. The first pipe (12) and the second pipe (13) penetrate and are sealingly fixed to the gas pipe (3). The valve core comprises a support hoop (17) and a right flow guide seat (18). The elastic member comprises a polished rod (69), a first support rod (19) and a first compression spring (20). The support hoop (17) is sealingly and slidingly connected with the inner wall of the gas pipe (3) and is fixedly provided with a plurality of vertical right flow guide seats (18) on the left part. The right flow guide seats (18) are arranged at equal intervals from front to back and have gaps between each other. The left end of the support hoop (17) is fixedly provided with a polished rod (69) on the front and the back. The polished rods (69) are parallel to the axial direction of the gas pipe (3). The left ends of the two polished rods (69) are fixedly provided with a first support rod (19). The first support rod (19) and the first support frame (15) are fixedly provided with a first compression spring (20). The valve core can make the right flow guide seats (18) and the left flow guide seats (16) abut against each other to realize sealing and blocking under the elastic repulsive force of the first compression spring (20).

3. The coal mine gas conveying explosion-proof control device according to claim 2, characterized in that: The right flow guide base (18) is hollow inside, each right flow guide base (18) is penetrated by a No. 3 through hole (21) from top to bottom together with the support hoop (17), each right flow guide base (18) is penetrated by a No. 4 through hole (22) from top to bottom together with the support hoop (17), the gas conveying pipe (3) is fixedly connected with a plurality of vertical No. 3 pipes (23) at the top and a plurality of vertical No. 4 pipes (24) at the bottom, each No. 3 pipe (23) and No. 4 pipe (24) can be aligned and communicated with each No. 3 through hole (21) and each No. 4 through hole (22) respectively, the right flow guide base (18) is not attached to the left flow guide base (16) when the No. 3 pipe (23) and No. 4 pipe (24) are aligned and communicated with the No. 3 through hole (21) and No. 4 through hole (22) respectively, and each No. 3 pipe (23) and No. 4 pipe (24) is connected with the water cooling system respectively.

4. The coal mine gas conveying anti-explosion control device according to claim 3, characterized in that: The support hoop (17) seals and blocks the No. 3 pipe (23) and No. 4 pipe (24) when the left flow guide base (16) is attached to the right flow guide base (18), the gas conveying pipe (3) is fixedly connected with a vertical No. 5 pipe (25) at the top, the support hoop (17) is fixedly connected with a No. 6 pipe (26) at the right top, the No. 6 pipe (26) is fixedly connected with a plurality of No. 6 atomizing nozzles (27), the support hoop (17) seals and blocks the No. 5 pipe (25) when the No. 3 pipe (23) and No. 4 pipe (24) are aligned and communicated with the No. 3 through hole (21) and No. 4 through hole (22) respectively, the No. 5 pipe (25) is communicated with the No. 6 pipe (26) when the right flow guide base (18) is attached to the left flow guide base (16) to realize sealing and blocking, and the No. 5 pipe (25) is connected with the water cooling system.

5. The coal mine gas conveying explosion-proof control device according to claim 4, characterized in that: The water cooling system comprises a water pump (28), a cooling tank (29), an electric refrigeration device (30), and a secondary return pipe (31), the water suction pipe of the water pump (28) is communicated with the right part of the transfer tank (1), the part of the water suction pipe of the water pump (28) communicated with the transfer tank (1) is not higher than the bottom end of the left part of the gas inlet pipe (4), the water discharge pipe of the water pump (28) is communicated with the water inlet nozzle of the cooling tank (29), the water outlet nozzle of the cooling tank (29) is communicated with the No. 3 pipe (23) and No. 5 pipe (25) through a water distributor and a pipeline, the cooling tank (29) is installed with the electric refrigeration device (30), the water pump (28) and the electric refrigeration device (30) are connected with a controller and a power supply outside, and each No. 4 pipe (24) is communicated with the inner cavity of the transfer tank (1) through a secondary return pipe (31).

6. The coal mine gas conveying explosion-proof control device according to any one of claims 2-5, characterized in that: The air inlet pipe (4) is provided with a rotary valve (32) for controlling the on-off, the valve rod of the rotary valve (32) is vertically arranged, and the valve rod is coaxially fixed with a gear (33), the rotary valve (32) is located in the transfer tank (1), the inner wall of the transfer tank (1) is fixed with a horizontal guide frame (34), the guide frame (34) is slidably connected with a rack frame (35) on the left and right, the rack frame (35) is engaged with the gear (33), the rack frame (35) is fixed with a first supporting rod (19), when the supporting hoop (17) moves to the left to make the right flow guide seat (18) fit with the left flow guide seat (16), the rack frame (35) will make the gear (33) rotate to make the rotary valve (32) close, when the supporting hoop (17) moves to the right to make the right flow guide seat (18) and the left flow guide seat (16) disengage, the rack frame (35) will make the gear (33) rotate to make the rotary valve (32) open.

7. The coal mine gas conveying explosion-proof control device according to any one of claims 1-6, characterized in that: The pressure relief assembly includes a bursting disc (36), a hook (37), a limiting nut (38), a blocking net (39), and a hanging ring (40), the upper part of the pressure relief tank (2) is penetrated, and the upper part is penetrated by a fastener and is tightly fixed with the bursting disc (36) which is tightly fitted with the pressure relief tank (2), a plurality of hooks (37) are arranged and fixed on the top of the outer wall of the pressure relief tank (2) along the circumference, each hook (37) is respectively inserted with a hanging ring (40), and is respectively threadedly connected with a limiting nut (38), the limiting nut (38) is used for preventing the hanging ring (40) from being separated from the hook (37), each hook (37) is commonly fixed with a blocking net (39), the blocking net (39) is made of flame-retardant flexible material, the blocking net (39) can be stretched upward to intercept the upward moving bursting disc (36), the pipeline assembly (7) includes a water flow pipe (42), a main return pipe (43), and a valve (44), the upper part of the transfer tank (1) is penetrated, and the upper part is penetrated by a fastener and is tightly fixed with a cover plate (41), the bottom end of the transfer tank (1) is fixedly connected with a vertical water flow pipe (42), the middle part of the water flow pipe (42) is fixedly connected with the bottom end of the pressure relief tank (2) through the main return pipe (43), the bottom of the water flow pipe (42) is provided with a valve (44) for controlling the on-off, one end of the auxiliary return pipe (31) is fixedly connected with the main return pipe (43), and the other end is connected with each fourth pipe (24) through a water distributor.

8. The coal mine gas conveying explosion-proof control device according to claim 7, characterized in that: The inner wall of the through part of the upper part of the pressure relief tank (2) is fixed with a vertical inner support cylinder (45), the outer wall of the through part of the upper part of the pressure relief tank (2) is fixed with a vertical outer support cylinder (46), the upper and lower of the inner support cylinder (45) is sealingly and slidably connected with a horizontal piston ring (47), the outer support cylinder (46) stores an annular air bag (48) capable of being folded and bent, the bottom of the air bag (48) is fixed with the outer wall of the pressure relief tank (2), a plurality of air holes (49) are vertically arranged in the upper part of the pressure relief tank (2), each air hole (49) is connected with the inner cavity of the inner support cylinder (45) and the inner cavity of the air bag (48), the outer support cylinder (46) is combined with an annular end cover (50), a plurality of vertical No. 7 compression springs (51) are arranged between the top end of the piston ring (47) and the inner wall of the pressure relief tank (2), the piston ring (47) has a downward movement trend under the elastic pressure of the No. 7 compression spring (51), the space formed by the piston ring (47), the inner support cylinder (45) and the air bag (48) stores inert gas, a plurality of horizontal and closed guide cylinders (52) are arranged on the outer wall of the inner support cylinder (45) along the circumference, each guide cylinder (52) is horizontally and slidably connected with a pin (53), the No. 8 compression spring (54) is arranged between the pin (53) and the guide cylinder (52), the pin (53) has a horizontal sliding trend towards the axis of the inner support cylinder (45) under the elastic repulsive force of the No. 8 compression spring (54), the end of the pin (53) close to the axis of the inner support cylinder (45) is wedge-shaped, a plurality of insertion holes (55) are arranged on the outer circumferential wall of the piston ring (47) at equal angles, each insertion hole (55) is correspondingly arranged above and below each pin (53), a plurality of wedge surfaces (56) are arranged on the outer circumferential edge of the top end of the piston ring (47), each wedge surface (56) is correspondingly arranged above and below each pin (53), the piston ring (47) can be inserted into the guide cylinder (52) by extruding the pin (53) through the wedge surface (56) when the piston ring (47) moves upward to a certain position, and the insertion of the pin (53) and the insertion hole (55) can be achieved, and the wedge-shaped part of the pin (53) can be completely inserted into the insertion hole (55) when the pin (53) is inserted into the insertion hole (55).

9. The coal mine gas delivery explosion-proof control device of claim 8, wherein: The pressure relief tank (2) is fixed with a horizontal and annular nozzle (57), the nozzle (57) is inserted into the outer support cylinder (45) with a gap, the lower left part of the nozzle (57) is fixedly connected with a vertical No. 7 pipe (58), the middle left part of the No. 7 pipe (58) is fixedly connected with a horizontal No. 8 pipe (59), the No. 8 pipe (59) penetrates through the pressure relief tank (2) and is sealingly fixed, the No. 8 pipe (59) is connected with a water cooling system, a piston (60) is sealingly and slidably connected in the No. 7 pipe (58), a vertical valve plate (61) is fixed on the top end of the piston (60), a vertical valve cylinder (62) is fixed on the upper part of the valve plate (61), the outer wall of the valve cylinder (62) is sealingly and slidably connected with the No. 7 pipe (58), an outer magnet (63) is fixedly wrapped in the piston (60), the valve plate (61), the piston (60) and the outer magnet (63) are vertically penetrated by a constant pressure hole (64), the valve cylinder (62) can seal and block the communication between the No. 7 pipe (58) and the No. 8 pipe (59), a gap is left between the valve cylinder (62) and the piston (60), a gap is left between the valve cylinder (62) and the valve plate (61), a limiting ring (65) is fixed on the inner wall of the No. 7 pipe (58), when the valve cylinder (62) is moved upward to a certain position, the top end of the valve cylinder (62) can be attached to the bottom end of the limiting ring (65), when the top end of the valve cylinder (62) is attached to the bottom end of the limiting ring (65), the gap between the valve cylinder (62) and the piston (60) can be communicated with the No. 8 pipe (59), a plurality of No. 7 atomizing nozzles (66) are fixed at equal angles on the circumference of the No. 7 pipe (58), each No. 7 atomizing nozzle (66) penetrates and is sealingly fixed with the inner support cylinder (45), an inner magnet (70) is fixedly wrapped in the piston ring (47), the inner magnet (70) can be left-right corresponding with the outer magnet (63) and produce magnetic attraction, when the inner magnet (70) and the outer magnet (63) are magnetically attracted, the piston (60), the valve plate (61) and the valve cylinder (62) move up and down with the piston ring (47).

10. The coal mine gas delivery explosion-proof control device according to claim 8 or 9, characterized in that: The pressure relief component (6) further comprises a protective cloth (67), a plurality of horizontal limiting rods (68) are fixed at equal angles on the inner circumference of the inner support cylinder (45), when the top end of the piston ring (47) is attached to the outer wall of the limiting rod (68), the pin (53) can be inserted into the insertion hole (55), the protective cloth (67) is made of PVC coated polyester cloth, the protective cloth (67) covers the top of the end cover (50) and the bursting disc (36), and the bottom is attached to the outer wall of the pressure relief tank (2).

Images