Telescopic fireproof isolating valve

Abstract

The invention discloses a telescopic fireproof isolating valve which is arranged in a waste gas channel and comprises a furling mechanism arranged on the inner wall of the waste gas channel and a traction mechanism arranged on the inner wall of the waste gas channel and opposite to the furling mechanism. Fireproof partition cloth is wound in the winding mechanism, the edge of one side of the fireproof partition cloth is connected to the winding mechanism, the edge of the other side of the fireproof partition cloth is connected to the traction mechanism, and the traction mechanism pulls the fireproof partition cloth to be unfolded from the winding mechanism and move towards the traction mechanism; the fireproof partition cloth is connected to the edge of one side of the traction mechanism and is suitable for being in sealing fit with the traction mechanism, and a fireproof partition is formed in the waste gas channel. The structure combining the flexible refractory material and mechanical transmission is adopted and is completely integrated in the waste gas treatment equipment body, so that the technical problems that in existing activated carbon waste gas treatment equipment, fire isolation measures are slow in response, the integrity of the equipment is damaged, installation and transformation are difficult, and the cost is high are solved.

Description

Technical Field

[0001] This invention relates to the field of fire protection device technology, and in particular to a telescopic fireproof isolation valve. Background Technology

[0002] In the field of industrial waste gas treatment, activated carbon adsorption is a common method for treating volatile organic compounds (VOCs). However, activated carbon materials are highly susceptible to smoldering when heated after adsorbing organic matter, posing a significant fire risk. Currently, the commonly used preventative measure is to add a spray system before and after the activated carbon tank. Although the spray system can eventually extinguish the fire, the response and extinguishing process is time-consuming, and the fire can easily spread, causing severe damage to connected upstream and downstream equipment (such as pipelines, fans, and even upstream spraying equipment), resulting in huge economic losses.

[0003] In existing technologies, fire-resistant isolation valves are required to quickly cut off the path of fire spread in order to minimize damage. However, for such large-section equipment, existing technologies mostly use slide gate valves or lift-type fire doors. However, these solutions have significant drawbacks: 1) high cost; 2) complex mechanical structure and large external space occupation; 3) damage to the overall structure and aesthetic appearance of the equipment; 4) difficulty in retrofitting existing equipment already in operation. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a telescopic fireproof isolation valve. It aims to provide a fireproof isolation device that is different from the prior art, so as to achieve the isolation function of quickly cutting off the path of fire spread. Compared with various existing fireproof isolation devices, it is integrated inside the device and has a fast response.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] This application discloses a telescopic fireproof isolation valve, which is installed in an exhaust gas passage and includes a winding mechanism installed on the inner wall of the exhaust gas passage and a traction mechanism installed on the inner wall of the exhaust gas passage and opposite to the winding mechanism.

[0007] The fireproof partition cloth is wound up inside the winding mechanism. One edge of the fireproof partition cloth is connected to the winding mechanism, and the other edge is connected to the traction mechanism. The traction mechanism pulls the fireproof partition cloth out of the winding mechanism and moves it toward the traction mechanism.

[0008] The fireproof partition cloth is connected to one edge of the traction mechanism and is adapted to seal with the traction mechanism to form a fireproof partition in the exhaust gas passage.

[0009] The beneficial effect of this invention is that it adopts a structure combining flexible refractory materials and mechanical transmission, and is fully integrated inside the main body of the waste gas treatment equipment. This solves the technical problems of slow response of fire isolation measures, damage to the integrity of the equipment, difficult installation and modification, and high cost in existing activated carbon waste gas treatment equipment. The fireproof partition can be made of ceramic fiberglass cloth. Furthermore, when the fireproof partition moves to form a seal, due to the interlocking and sealing of its strips and the protective box below, the two isolation valves set on both sides of the activated carbon seal the burning activated carbon inside. The sealed space rapidly depletes oxygen as combustion occurs, thereby quickly extinguishing the fire and preventing its spread.

[0010] Furthermore, the fireproof partition cloth is a ceramic fiberglass cloth.

[0011] Furthermore, the fireproof partition cloth is connected to one edge of the traction mechanism and is provided with a pressure plate, and the side of the pressure plate away from the fireproof partition cloth is provided with a strip.

[0012] Furthermore, the traction mechanism includes a protective box and a driver disposed within the protective box. The driver is connected to the pressure plate via a traction rope, and the driver pulls the traction rope. The protective box is provided with a groove, which is adapted to fit into the slats.

[0013] Furthermore, the driver includes a grooved wheel, a drive shaft, and a drive motor; the grooved wheel is disposed in the middle section of the drive shaft, the drive motor is used to drive the drive shaft, and the traction rope is wound inside the grooved wheel to pull the pressure plate as the drive shaft rotates.

[0014] Furthermore, the winding mechanism includes a top shaft, a portion of which is wrapped with fireproof cloth, and an exposed area on the top shaft, which is configured as a gear; the winding mechanism also includes a rack meshing with the gear, one end of which is fixed to the exhaust gas channel by a spring, and the spring contracts along the length of the rack.

[0015] Furthermore, the winding mechanism also includes a housing that encloses the top shaft, rack, and spring, and the housing is also provided with a through hole for the fireproof cloth to pass through.

[0016] Furthermore, the traction mechanism includes a top shaft, a portion of which is wrapped with fireproof cloth, and an exposed area on the top shaft, which is configured as a gear; the traction mechanism also includes a rack that meshes with the gear, one end of which is fixed to the exhaust gas passage by a spring, and the spring contracts along the length of the rack.

[0017] Furthermore, the winding mechanism includes a fusible part, one end of which is connected to the winding mechanism and the other end of which is connected to the pressure plate; the fusible part melts when subjected to high temperature.

[0018] Furthermore, it also includes a sealing track installed on the inner wall of the exhaust pipe, wherein the sealing track is provided with lips, and the lips are staggered to fit against the fireproof partition to form a seal. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an exhaust gas duct and a telescopic fireproof isolation valve according to some embodiments of this application;

[0020] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0021] Figure 3 for Figure 1 A magnified view of a portion of region B in the middle;

[0022] Figure 4 This is a schematic diagram of a sealed track structure according to some embodiments of this application;

[0023] In the picture:

[0024] 100-Reeling mechanism;

[0025] 110-Top shaft, 120-Rack, 130-Spring, 140-Box body;

[0026] 200 - Traction mechanism;

[0027] 210 - Protective box, 220 - Driver, 230 - Traction rope;

[0028] 221 - Drive shaft;

[0029] 300-Fireproof partition cloth;

[0030] 310 - Pressure plate, 320 - Strip

[0031] 400 - Exhaust Gas Passage;

[0032] 410 - Exhaust gas inlet, 420 - Exhaust gas outlet, 430 - Activated carbon adsorption zone, 440 - Pre-filter;

[0033] 500 - Sealed track, 510 - Lip edge;

[0034] 600 - Trigger switch. Detailed Implementation

[0035] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] refer to Figures 1-4 According to an embodiment of this application, a telescopic fireproof isolation valve includes a winding mechanism 100 disposed on the inner wall of an exhaust gas passage 400 and a traction mechanism 200 disposed on the inner wall of the exhaust gas passage 400 and opposite to the winding mechanism 100. A fireproof partition cloth 300 is wound inside the winding mechanism 100. One edge of the fireproof partition cloth 300 is connected to the winding mechanism 100, and the other edge is connected to the traction mechanism 200. The traction mechanism 200 pulls the fireproof partition cloth 300 out of the winding mechanism 100 and moves it toward the traction mechanism 200.

[0037] In detail, the fireproof partition cloth 300 is connected to one side edge of the traction mechanism 200 to form a fireproof partition within the exhaust gas channel 400, which is suitable for sealing with the traction mechanism 200. There are two partition valves, and activated carbon is stored in the exhaust gas pipeline, with the activated carbon placed between the two partition valves.

[0038] Typically, the exhaust gas channel 400 includes an exhaust gas inlet 410 and an exhaust gas outlet 420, which is usually connected to a pre-filter 440 and has an activated carbon adsorption area 430 inside. In this embodiment, the two isolation valves are mainly installed at the front and rear ends of the activated carbon adsorption area 430. This embodiment adopts a structure combining flexible refractory materials and mechanical transmission, and is fully integrated inside the exhaust gas treatment equipment body, thereby solving the technical problems of slow fire isolation measures, damage to the overall equipment integrity, difficult installation and modification, and high costs in existing activated carbon exhaust gas treatment equipment. The fireproof partition cloth 300 can be selected as ceramic fiberglass cloth.

[0039] refer to Figure 1 and Figure 2 It is understood that the fireproof partition 300 is connected to one edge of the traction mechanism 200 and is provided with a pressure plate 310. The side of the pressure plate 310 away from the fireproof partition 300 is provided with a strip 320. Thus, under the pulling action of the traction mechanism 200, after the activated carbon ignites, the pressure plate 310 is pulled to the bottom to form a seal.

[0040] In some embodiments, the traction mechanism 200 includes a protective box 210 and a driver 220 disposed within the protective box 210. The driver 220 is connected to the pressure plate 310 via a traction rope 230, which pulls the traction rope 230, preferably a steel wire rope. The protective box 210 is provided with a groove adapted to engage with the slat 320. The pressure plate 310 may be a steel slat 320 with a protruding slat 320 serving as a baffle to block and enclose the corresponding space.

[0041] To be more specific, such as Figure 2 As shown, the driver 220 includes a grooved pulley 221, a drive shaft 222, and a drive motor (not shown in the figure). The motor can rotate forward and backward to retract the steel wire rope, thereby controlling the raising and lowering of the fireproof curtain. The grooved pulley 221 (not shown in the figure) is located in the middle section of the drive shaft 222. The drive motor is used to drive the drive shaft 222. The traction rope 230 is wound inside the grooved pulley 221 to pull the pressure plate 310 as the drive shaft 222 rotates. Taking a steel wire rope as an example, the traction rope 230 has steel wire ropes on both sides extending downward and embedded and fixed in the grooves of the grooved pulley 221.

[0042] refer to Figure 3 The winding mechanism 100 includes a top shaft 110, a portion of which is wrapped with a fireproof partition cloth 300, specifically, one end of a ceramic fiberglass cloth is fixed and wound around the top shaft 110. The top shaft 110 also has an exposed area, which is configured as a gear (not shown in the figure). The winding mechanism 100 also includes a rack 120 meshing with the gear. One end of the rack 120 is fixed to the exhaust gas channel 400 by a spring 130, which retracts along the length of the rack 120. In other words, when the traction mechanism 200 does not exert any pulling force, the rack 120 will retract under the action of the spring 130, thereby rotating the top shaft 110 to wind up the fireproof partition cloth 300.

[0043] Specifically, the winding mechanism 100 also includes a housing 140, which encloses the top shaft 110, rack 120, and spring 130 (please confirm the diagram is correct, 1, Figure 2 Parts 130 and 120 are located outside of 140. 2. It is unclear how the rack is fixed to the exhaust channel 400 via 130; it is only secured by a spring, causing the rack to droop and tilt. 3. (Note 400 is not shown in the attached drawing). The box body 140 also has a through hole for the fireproof partition 300 to pass through. The box body 140 is made of fireproof material, providing protection for the internal parts.

[0044] refer to Figure 4The telescopic fireproof isolation valve of this application embodiment also includes a sealing track 500 disposed on the inner wall of the exhaust pipe, wherein the sealing track 500 is provided with a lip 510, and the lip 510 is staggered to fit into the fireproof partition cloth 300 to form a seal.

[0045] Specifically, the sealing guide rails are set on both sides of the ceramic fiberglass cloth path, and multiple layers of interlaced silicone sealing strips extend out from them as lips 510. The fireproof partition cloth 300 passes through them so as to form a fireproof partition after the fireproof partition cloth 300 moves to the closed position.

[0046] During operation, there are two states: ventilated and isolated.

[0047] Under normal ventilation conditions, the motor of the actuator 220 reverses, releasing the steel wire rope. The top shaft 110 automatically rotates under the action of the spring 130's return mechanism, retracting and rolling up the ceramic fiberglass cloth, storing it inside the housing 140. The passage opens, and the equipment operates normally. A trigger switch is installed on the housing 140; in this example, it is a baffle. When the baffle touches the limit switch on the top protective box 210, the system knows that the valve is fully open.

[0048] In emergency isolation mode, when the control system issues a fire alarm signal or a shutdown command, the drive motor rotates forward, winding up the steel wire rope and forcefully pulling it down against the force of spring 130. The steel wire rope pulls the ceramic fiberglass cloth downward until it is fully unfolded. The iron strip 320 and baffle at the end of the curtain are tightly pressed against the protective box 210, forming a seal. The sealing tracks 500 on both sides ensure side sealing. Similarly, a trigger switch is also provided on the protective box 210. In this example, it is set as a baffle. When the baffle touches the limit switch on the bottom protective box 210, the system knows that the valve has been completely closed and sealed, successfully isolating the dangerous area.

[0049] It is worth noting that when the fireproof partition moves to form a seal, because its strips 320 and the protective box 210 below fit together and seal, and the edges and sealing track 500 cooperate to seal, the two isolation valves set on both sides of the activated carbon seal the activated carbon burning inside. As combustion occurs, oxygen is rapidly depleted in the sealed space, thus quickly extinguishing the fire and preventing the fire from spreading.

[0050] In some other embodiments, unlike the previous embodiment, the winding mechanism 100 of the previous embodiment is used as the traction mechanism 200 to move the fireproof partition cloth 300 to the sealing position through the action of the rack 120 and the spring 130, without the need for separate sensors and drive motors.

[0051] In this embodiment, the traction mechanism 200 includes a top shaft 110, a portion of which is wrapped with fireproof cloth 300, and an exposed area on the top shaft 110, which is configured as a gear. The traction mechanism 200 also includes a rack 120 meshing with the gear, one end of which is fixed to the exhaust gas channel 400 by a spring 130, which contracts along the length of the rack 120. Furthermore, the winding mechanism 100 includes a fusible portion, one end of which is connected to the winding mechanism 100, and the other end is connected to the pressure plate 310. The fusible portion melts upon exposure to high temperatures.

[0052] In this way, when the fusible link melts, the fireproof cloth 300 wrapped inside the winding mechanism 100 loses its tension due to the top plate losing its pulling force. The cloth will then move towards the traction mechanism 200 under the restoring force generated by the spring 130 in the traction mechanism 200, and eventually move to a position where it seals against the traction mechanism 200. This embodiment eliminates the need for sensors, avoiding fireproofing failure due to electrical malfunctions and reducing costs.

[0053] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A telescopic fireproof isolation valve, installed in an exhaust gas duct, characterized in that, It includes a winding mechanism installed on the inner wall of the exhaust gas passage and a traction mechanism installed on the inner wall of the exhaust gas passage and opposite to the winding mechanism. The fireproof partition cloth is wound up inside the winding mechanism. One edge of the fireproof partition cloth is connected to the winding mechanism, and the other edge is connected to the traction mechanism. The traction mechanism pulls the fireproof partition cloth out of the winding mechanism and moves it toward the traction mechanism. The fireproof partition cloth is connected to one edge of the traction mechanism and is adapted to seal with the traction mechanism to form a fireproof partition in the exhaust gas passage.

2. The telescopic fireproof isolation valve according to claim 1, characterized in that, The fireproof partition cloth is ceramic fiberglass cloth.

3. The telescopic fireproof isolation valve according to claim 1, characterized in that, The fireproof partition is connected to one edge of the traction mechanism and is provided with a pressure plate. The side of the pressure plate away from the fireproof partition is provided with a strip.

4. The telescopic fireproof isolation valve according to claim 3, characterized in that, The traction mechanism includes a protective box and a driver disposed inside the protective box. The driver is connected to the pressure plate via a traction rope, and the driver pulls the traction rope. The protective box is provided with a groove, which is adapted to fit into the slats.

5. The telescopic fireproof isolation valve according to claim 4, characterized in that, The driver includes a grooved wheel, a drive shaft, and a drive motor. The grooved wheel is located in the middle section of the drive shaft, the drive motor is used to drive the drive shaft, and the traction rope is wound inside the grooved wheel to pull the pressure plate as the drive shaft rotates.

6. The telescopic fireproof isolation valve according to claim 1, characterized in that, The winding mechanism includes a top shaft, a portion of which is wrapped with fireproof cloth, and an exposed area on the top shaft, which is configured as a gear. The winding mechanism also includes a rack that meshes with the gear. One end of the rack is fixed to the exhaust gas passage by a spring, and the spring contracts along the length of the rack.

7. The telescopic fireproof isolation valve according to claim 6, characterized in that, The winding mechanism also includes a housing that encloses the top shaft, rack, and spring, and the housing is also provided with a through hole for the fireproof cloth to pass through.

8. The telescopic fireproof isolation valve according to claim 3, characterized in that, The traction mechanism includes a top shaft, a portion of which is wrapped with fireproof cloth, and an exposed area on the top shaft, which is configured as a gear. The traction mechanism also includes a rack that meshes with the gear. One end of the rack is fixed to the exhaust gas passage by a spring, and the spring contracts along the length of the rack.

9. The telescopic fireproof isolation valve according to claim 8, characterized in that, The winding mechanism includes a fusible part, one end of which is connected to the winding mechanism and the other end is connected to the pressure plate; The fused portion melts when subjected to high temperature.

10. The telescopic fireproof isolation valve according to claim 1, characterized in that, It also includes a sealing track installed on the inner wall of the exhaust pipe, wherein the sealing track is provided with a lip, and the lips are staggered to fit into the fireproof partition to form a seal.

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