Pipe network type condensed aerosol fire extinguishing system

Abstract

The utility model discloses a pipe network type condensed aerosol fire extinguishing system which comprises a signal detector, a fire extinguishing controller, a condensed aerosol fire extinguishing device, a one-way sealing valve, a connecting pipe, a collecting pipe, a branch pipe, a selector valve and a spray head, the fire extinguishing controller is connected with the signal detector; the condensed aerosol fire extinguishing device is connected with the fire extinguishing controller; N fire extinguishing groups are arranged in the condensed aerosol fire extinguishing device; the number of the one-way sealing valves is N; one end of the connecting pipe is connected with the output end of a one-way sealing valve; the collecting pipe is connected with the other ends of the N connecting pipes; the number of the branch pipes is N, and one end of each branch pipe is connected with the collecting pipe; the selector valves are arranged on one branch pipe, and each selector valve is connected with the corresponding one-way sealing valve through a starting pipeline; the nozzle is arranged at the other end of the branch pipe; wherein N is an integer greater than or equal to 2. According to the utility model, a plurality of signal detectors are arranged, and the signal detectors are convenient to detect a fire in time, so that the hot aerosol fire extinguishing device arranged outdoors can extinguish fire in time.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing, in particular to a pipe network type hot aerosol fire extinguishing system. Background Art

[0002] An aerosol fire extinguishing device is a fire extinguishing device that uses aerosol processed into a solid state as a charge, and uses a thermal wire as an initiator to ignite the charge, thereby instantly generating a large amount of hot aerosol fire extinguishing agent.

[0003] Some hot aerosol fire extinguishing devices are disclosed in the prior art, such as the Chinese patent document with application number 201610622950.7, which discloses a temperature-controlled hot aerosol automatic fire extinguishing device, which includes a temperature-controlled switch assembly, an end cover, a locking screw, a partition, a wire, a coolant, a mounting ear, an electric start assembly, an aerosol agent and a housing. Among them, the temperature-controlled switch assembly is equipped with a temperature-sensitive glass ball inside, and a spray valve is designed on the upper end of the temperature-controlled switch assembly. The temperature-controlled switch assembly equipped with a temperature-sensitive glass ball inside is installed in the center hole of the end cover, and is fixed in the center hole of the end cover through the locking nut on the temperature-controlled switch assembly.

[0004] However, the hot aerosol fire extinguishing device in the prior art is installed indoors. When a fire occurs indoors, the temperature-sensitive glass ball is far away from the fire source and cannot be broken in time. When the fire spreads to a relatively large size, the temperature-sensitive glass ball can automatically explode and the hot aerosol fire extinguishing device can be activated to extinguish the fire, thus missing the best time for fire extinguishing. In view of this, the inventor of the utility model conducted in-depth research on the above-mentioned defects in the prior art, and thus this case was created. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, the purpose of the utility model is to provide a pipe network type hot aerosol fire extinguishing system, which is convenient for timely detecting fires by setting a plurality of signal detectors, so that the hot aerosol fire extinguishing device set outdoors can extinguish the fire in time.

[0006] To achieve the above-mentioned purpose, the utility model proposes a pipe network type hot aerosol fire extinguishing system, including a signal detector, a fire extinguishing controller, a hot aerosol fire extinguishing device, a one-way sealing valve, a connecting pipe, a manifold, a branch pipe, a selection valve and a nozzle;

[0007] The fire extinguishing controller is connected to the signal detector; the hot aerosol fire extinguishing device is connected to the fire extinguishing controller, and N fire extinguishing groups are arranged in the hot aerosol fire extinguishing device; the one-way sealing valves are arranged to be N, and each one-way sealing valve is connected to a fire extinguishing group; the connecting pipes are arranged to be N, and one end of each connecting pipe is connected to the output end of a one-way sealing valve; the collecting pipe is arranged to be one, and the collecting pipe is connected to the other ends of the N connecting pipes; the branch pipes are arranged to be N, and one end of each branch pipe is connected to the collecting pipe; the selection valves are arranged to be N, and each selection valve is arranged on a branch pipe, and each selection valve is connected to the one-way sealing valve through a starting pipeline; the nozzle is arranged on the other end of the branch pipe; wherein N is an integer greater than or equal to 2.

[0008] Furthermore, it also includes a bracket, on which the collecting pipe is arranged.

[0009] Furthermore, the signal detector includes a temperature detector and a smoke detector, a temperature detector and a smoke detector form a detection group, and a detection group is arranged in a protection area.

[0010] Furthermore, it also includes a signal feedback device, which is arranged on the branch pipe and connected to the fire extinguishing controller.

[0011] Furthermore, a low-leakage and high-sealing valve is provided on the starting pipeline.

[0012] Furthermore, the hot aerosol fire extinguishing device includes a chassis and an outer box; the fire extinguishing group is arranged on the chassis and located in the outer box.

[0013] Furthermore, each fire extinguishing group includes a first barrel body, a second barrel body and an inner box frame; the first barrel body is arranged on the chassis, an air outlet hole is arranged at the bottom of the first barrel body, and a first coolant is arranged between the inner wall of the first barrel body and the outer wall of the second barrel body; the second barrel body is arranged in the first barrel body, an initiator is arranged at the bottom of the second barrel body, a generator is arranged in the lower part of the second barrel body, a second coolant is arranged in the upper part of the second barrel body, and an aerosol cavity is formed between the top of the second barrel body and the top of the first barrel body; the inner box frame is arranged on the chassis, and an aerosol channel is formed between the inner side wall of the inner box frame and the outer side wall of the first barrel body.

[0014] Furthermore, a power box is arranged on the outer box, a power source is arranged in the power box, and the power source is connected to the initiator through a thermistor line.

[0015] Furthermore, the one-way sealing valve includes a valve body and a valve disc; the valve body is arranged on the cover plate, a fluid channel is arranged in the valve body, one end of the fluid channel is an input end, the other end of the fluid channel is an output end, and an outlet is formed at the end of the valve body; the valve disc is rotatably arranged in the valve body, and the valve disc has an open state and a closed state; in the open state, the valve disc does not contact the output end, so that the input end is connected with the outlet through the output end; in the closed state, the valve disc abuts against the output end, so that the input end is not connected with the outlet.

[0016] Furthermore, an installation channel is formed on the side of the valve body, a rotating shaft for the valve disc to rotate is arranged in the installation channel, and a valve cover is arranged at the end of the installation channel; the valve disc includes a rotating seat and a disc body, the rotating seat is connected to the rotating shaft and can rotate along the rotating shaft, and the disc body is connected to the rotating seat and rotates synchronously with the rotating seat.

[0017] Furthermore, an elastic pad is arranged at the bottom of the petal body, and the elastic pad can be against the output end; a convex seat is arranged on the petal body, a connecting groove is formed in the convex seat, and a connecting port is arranged on the elastic pad; it also includes a gasket and a connecting piece, the gasket is against the bottom of the elastic pad, and the connecting piece passes through the gasket and the connecting port and is connected to the connecting groove.

[0018] Furthermore, a sealing diaphragm is arranged in the valve body, and the sealing diaphragm is located above the fluid channel; a bayonet capable of piercing the sealing diaphragm is arranged on the valve body; a convex ring is arranged in the valve body, and the sealing diaphragm is arranged on the convex ring.

[0019] Furthermore, it also includes a box cover, which is arranged on the outer box and has a clearance opening for the valve body to pass through.

[0020] After adopting the above structure, the utility model relates to a pipe network type hot aerosol fire extinguishing system, which has at least the following

[0021] Beneficial effects:

[0022] First, during use, signal detectors are arranged in multiple protection zones, and the hot aerosol fire extinguishing device is arranged outdoors. When a fire occurs in a protection zone, the signal detector detects it and sends a signal to the fire extinguishing controller. The fire extinguishing controller controls the hot aerosol fire extinguishing device to start, so that the hot aerosol fire extinguishing device sprays out fire extinguishing gas. A part of the gas passes through the one-way sealing valve, enters the manifold through the connecting pipe, and finally flows from the manifold to a selection valve of the branch pipe, while the other part of the gas enters the selection valve through the starting pipeline, thereby driving the selection valve to open, so that the gas is sprayed out from the branch pipe through the nozzle.

[0023] Second, by setting up N fire extinguishing groups and N one-way sealing valves, when one fire extinguishing group sprays out fire extinguishing gas while other groups do not spray out fire extinguishing gas, the one-way sealing valve plays a sealing role, thereby preventing the fire extinguishing gas from entering the non-working fire extinguishing group. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a pipe network type hot aerosol fire extinguishing system according to an embodiment of the utility model;

[0025] Figure 2 It is a schematic structural diagram of two fire extinguishing groups in a hot aerosol fire extinguishing device according to an embodiment of the utility model;

[0026] Figure 3It is a schematic structural diagram of a single fire extinguishing group in a hot aerosol fire extinguishing device according to an embodiment of the utility model;

[0027] Figure 4 It is a schematic diagram of the internal structure of the hot aerosol fire extinguishing device according to an embodiment of the utility model;

[0028] Figure 5 It is a structural schematic diagram of a one-way sealing valve according to an embodiment of the utility model;

[0029] Figure 6 It is a structural schematic diagram of another state of the one-way sealing valve according to an embodiment of the utility model;

[0030] Figure 7 It is a structural schematic diagram of a valve flap according to an embodiment of the utility model;

[0031] Figure 8 It is a structural schematic diagram of the valve flap according to another angle of the embodiment of the utility model;

[0032] Fig. 9 It is a schematic diagram of the connection between the one-way sealing valve and the hot aerosol fire extinguishing device according to an embodiment of the utility model.

[0033] Description of symbols

[0034] Signal detector 1, fire extinguishing controller 2, hot aerosol fire extinguishing device 3, fire extinguishing group 31, first barrel 311, air outlet hole 3111, second barrel 312, inner box frame 313, first coolant 314, initiator 315, generator 316, second coolant 317, aerosol cavity 318, aerosol channel 319, chassis 32, outer box 33, box cover 34, one-way sealing valve 4, valve body 41, fluid channel 411, input end 4111, output End 4112, outlet 412, installation channel 413, rotating shaft 414, sealing diaphragm 415, convex ring 416, valve disc 42, rotating seat 421, valve body 422, bayonet 4221, elastic pad 423, connecting port 4231, convex seat 424, gasket 425, connecting piece 426, valve cover 43, connecting pipe 5, collecting pipe 6, branch pipe 7, selection valve 8, nozzle 9, bracket 10, signal feedback device 11, starting pipeline 12, low leakage and high sealing valve 13. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0036] like Figures 1 to 9As shown, a pipe network type hot aerosol fire extinguishing system of the utility model comprises a signal detector 1, a fire extinguishing controller 2, a hot aerosol fire extinguishing device 3, a one-way sealing valve 4, a connecting pipe 5, a collecting pipe 6, a branch pipe 7, a selection valve 8 and a nozzle 9; the fire extinguishing controller 2 is connected to the signal detector 1; the hot aerosol fire extinguishing device 3 is connected to the fire extinguishing controller 2, and N groups of fire extinguishing groups 31 are arranged in the hot aerosol fire extinguishing device 3; the one-way sealing valve 4 is arranged in N numbers, and each one-way sealing valve 4 is connected to a fire extinguishing group 31; The number of connecting pipes 5 is N, and one end of each connecting pipe 5 is connected to the output end 4112 of a one-way sealing valve 4; the number of collecting pipes 6 is one, and the collecting pipe 6 is connected to the other ends of N connecting pipes 5; the number of branch pipes 7 is N, and one end of each branch pipe 7 is connected to the collecting pipe 6; the number of selecting valves 8 is N, and each selecting valve 8 is arranged on a branch pipe 7, and each selecting valve 8 is connected to the one-way sealing valve 4 through a starting pipeline 12; the nozzle 9 is arranged on the other end of the branch pipe 7; wherein N is an integer greater than or equal to 2.

[0037] Thus, the utility model relates to a pipe network type hot aerosol fire extinguishing system. When in use, the signal detector 1 is arranged in a plurality of protection zones, and the hot aerosol fire extinguishing device 3 is arranged outdoors. When a fire occurs in a protection zone, the signal detector 1 detects it and sends a signal to the fire extinguishing controller 2. The fire extinguishing controller 2 controls the hot aerosol fire extinguishing device 3 to start, so that the hot aerosol fire extinguishing device 3 sprays out fire extinguishing gas. A part of the gas passes through the one-way sealing valve 4 and enters the manifold 6 through the connecting pipe 5, and finally flows from the manifold 6 to a selector valve 8 of the branch pipe 7, while another part of the gas enters the selector valve 8 through the start pipeline 12, thereby driving the selector valve 8 to open, so that the gas is sprayed out from the branch pipe 7 through the nozzle 9. By setting N groups of fire extinguishing groups 31 and N one-way sealing valves 4, when one group of fire extinguishing groups 31 sprays out fire extinguishing gas and other groups do not spray out fire extinguishing gas, the one-way sealing valve 4 plays a sealing role, thereby preventing the fire extinguishing gas from entering the fire extinguishing group 31 that is not working.

[0038] Optionally, a bracket 10 is further included, and the collecting pipe 6 is arranged on the bracket 10. By arranging the bracket 10, the collecting pipe 6 can be fixed on the bracket 10, so as to play a role in supporting the collecting pipe 6.

[0039] In this embodiment, the signal detector 1 includes a temperature detector and a smoke detector. A temperature detector and a smoke detector form a detection group. A detection group is set in a protection zone. In actual use, detection groups are set in different protection zones. When the temperature detector or smoke detector of the detection group detects a fire, a signal is sent to the fire extinguishing controller 2. The fire extinguishing controller 2 controls the hot aerosol fire extinguishing device 3 to start, thereby realizing timely fire extinguishing.

[0040] It also includes a signal feedback device 11 , which is arranged on the branch pipe 7 , connected to the fire extinguishing controller 2 , and a low-leakage and high-sealing valve 13 is arranged on the starting pipeline 12 .

[0041] In a preferred embodiment of the utility model, the hot aerosol fire extinguishing device 3 includes a chassis 32 and an outer box 33; the fire extinguishing group 31 is arranged on the chassis 32 and is located in the outer box 33. By arranging the chassis 32 and the outer box 33, it is convenient to arrange multiple groups of fire extinguishing groups 31 side by side on the chassis 32 and to arrange multiple groups of fire extinguishing groups 31 side by side in the outer box 33.

[0042] Specifically, each fire extinguishing group 31 includes a first barrel body 311, a second barrel body 312 and an inner box frame 313; the first barrel body 311 is arranged on the chassis 32, an air outlet hole 3111 is arranged at the bottom of the first barrel body 311, and a first coolant 314 is arranged between the inner wall of the first barrel body 311 and the outer wall of the second barrel body 312; the second barrel body 312 is arranged in the first barrel body 311, an initiator 315 is arranged at the bottom of the second barrel body 312, a generator 316 is arranged in the lower part of the second barrel body 312, a second coolant 317 is arranged in the upper part of the second barrel body 312, and an aerosol cavity 318 is formed between the top of the second barrel body 312 and the top of the first barrel body 311; the inner box frame 313 is arranged on the chassis 32, and an aerosol channel 319 is formed between the inner wall of the inner box frame 313 and the outer wall of the first barrel body 311.

[0043] When a fire occurs, the initiator 315 is activated, and the heat generated by the activation activates the generator 316, thereby reacting to produce a large amount of fire extinguishing gas, which is first cooled by the second coolant 317, then enters the aerosol chamber 318, and then passes through the first coolant 314 to be output from the gas outlet hole 3111, and finally sprayed out along the aerosol channel 319. By providing the second coolant 317 and the first coolant 314, the fire extinguishing gas is cooled twice, and the cooling effect of the fire extinguishing gas is good. The first coolant 314 is located between the inner wall of the first barrel 311 and the outer wall of the second barrel 312, so that the flow of the fire extinguishing gas can be increased, and the cooling effect of the fire extinguishing gas is further improved, so that the fire extinguishing effect is better.

[0044] Among them, a power box is arranged on the outer box 33, and a power source is arranged in the power box, and the power source is connected to the initiator 315 through a thermal line. By setting up the power box, when receiving the start signal of the fire extinguishing controller 2, the initiator 315 is started by controlling the thermal line, and the heat generated by the start starts the generator 316, so that a large amount of fire extinguishing gas is generated by the reaction, so as to achieve fire extinguishing.

[0045] In a preferred embodiment of the utility model, the one-way sealing valve 4 includes a valve body 41 and a valve flap 42; the valve body 41 is arranged on the cover plate, and a fluid channel 411 is arranged in the valve body 41, one end of the fluid channel 411 is an input end 4111, and the other end of the fluid channel 411 is an output end 4112, and an outlet 412 is formed at the end of the valve body 41; the valve flap 42 is rotatably arranged in the valve body 41, and the valve flap 42 has an open state and a closed state; in the open state, the valve flap 42 does not contact the output end 4112, so that the input end 4111 is connected with the outlet 412 through the output end 4112; in the closed state, the valve flap 42 abuts against the output end 4112, so that the input end 4111 is not connected with the outlet 412.

[0046] When the temperature detector and the smoke detector detect a fire, the fire extinguishing controller 2 controls the hot melt glue fire extinguishing device to spray out fire extinguishing gas, which flows from the input end 4111 of the valve body 41 to the fluid channel 411, and then drives the valve flap 42 to rotate, so that the valve flap 42 switches from a closed state to an open state, so that the fire extinguishing gas is output from the outlet 412 at the end of the valve body 41, and then passes through the connecting pipe 5 and the collecting pipe 6, and finally is sprayed out from the nozzle 9 through the branch pipe 7 to extinguish the fire.

[0047] In this embodiment, an installation channel 413 is formed on the side of the valve body 41, a rotating shaft 414 for the valve flap 42 to rotate is arranged in the installation channel 413, and a valve cover 43 is arranged at the end of the installation channel 413; the valve flap 42 includes a rotating seat 421 and a flap body 422, the rotating seat 421 is connected to the rotating shaft 414 and can rotate along the rotating shaft 414, and the flap body 422 is connected to the rotating seat 421 and rotates synchronously with the rotating seat 421.

[0048] When installing the valve flap 42, the valve flap 42 can be installed in the valve body 41 through the installation channel 413. During the specific installation process, the rotating seat 421 of the valve flap 42 is connected to the rotating shaft 414 in the installation channel 413, so that the rotating seat 421 can rotate along the rotating shaft 414. The rotating seat 421 rotates and drives the valve flap 42 to rotate synchronously, thereby realizing the switching of the valve flap 42 between the open state and the closed state.

[0049] Furthermore, an elastic pad 423 is provided at the bottom of the petal body 422, and the elastic pad 423 can abut against the output end 4112; a convex seat 424 is provided on the petal body 422, a connecting groove is formed in the convex seat 424, and a connecting port 4231 is provided on the elastic pad 423; and a gasket 425 and a connecting member 426 are also included, the gasket 425 abuts against the bottom of the elastic pad 423, and the connecting member 426 passes through the gasket 425 and the connecting port 4231 and is connected to the connecting groove. When installing the elastic pad 423, the connecting member 426 is passed through the gasket 425 and the connecting port 4231 in sequence and is connected to the connecting groove, so that the elastic pad 423 is firmly locked on the petal body 422.

[0050] In this embodiment, a sealing diaphragm 415 is provided in the valve body 41, and the sealing diaphragm 415 is located above the fluid channel 411; a bayonet 4221 capable of piercing the sealing diaphragm 415 is provided on the flap body 422; a convex ring 416 is provided in the valve body 41, and the sealing diaphragm 415 is provided on the convex ring 416. The function of the sealing diaphragm 415 is to enhance the sealing effect and ensure the long-term storage of the agent. By providing the bayonet 4221, the sealing diaphragm 415 can be pierced to achieve the output of the fire extinguishing gas. By providing the convex ring 416, when the valve flap 42 is in the open state, the valve flap 42 abuts against the convex ring 416, so that the valve flap 42 will not fit the inner wall of the valve body 41. When the airflow is reversed, the force bearing area of ​​the valve flap 42 is large, which facilitates the valve flap 42 to switch to the closed state under the action of the airflow.

[0051] Furthermore, it also includes a box cover 34, which is arranged on the outer box 33. The box cover 34 is provided with a clearance opening for the valve body 41 to pass through. By setting the clearance opening, it is convenient for the valve body 41 to pass through, so that the valve body 41 can be connected to the collecting pipe 6 to realize the spraying of fire extinguishing gas.

[0052] In summary, the pipe network hot aerosol fire extinguishing system of the present application ensures the centralized arrangement and long-distance transportation of hot aerosol, meeting the needs of large-scale application in large spaces and long distances. The present application is designed and calculated according to the size of the protection area, and the device is integrated in an assembled and combined arrangement, with a high degree of integration and small space occupation.

[0053] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A pipe network type hot aerosol fire extinguishing system, characterized in that: It includes a signal detector, a fire extinguishing controller, a hot aerosol fire extinguishing device, a one-way sealing valve, a connecting pipe, a manifold, a branch pipe, a selection valve and a sprinkler; The fire extinguishing controller is connected to the signal detector; the hot aerosol fire extinguishing device is connected to the fire extinguishing controller, and N fire extinguishing groups are arranged in the hot aerosol fire extinguishing device; the one-way sealing valves are arranged to be N, and each one-way sealing valve is connected to a fire extinguishing group; the connecting pipes are arranged to be N, and one end of each connecting pipe is connected to the output end of a one-way sealing valve; the collecting pipe is arranged to be one, and the collecting pipe is connected to the other ends of the N connecting pipes; the branch pipes are arranged to be N, and one end of each branch pipe is connected to the collecting pipe; the selection valves are arranged to be N, and each selection valve is arranged on a branch pipe, and each selection valve is connected to the one-way sealing valve through a starting pipeline; the nozzle is arranged on the other end of the branch pipe; wherein N is an integer greater than or equal to 2.

2. The pipe network type hot aerosol fire extinguishing system according to claim 1, characterized in that: A bracket is also included, on which the collecting pipe is arranged.

3. The pipe network type hot aerosol fire extinguishing system according to claim 1, characterized in that: The signal detector comprises a temperature detector and a smoke detector. A temperature detector and a smoke detector form a detection group. A detection group is arranged in a protection area.

4. The pipe network type hot aerosol fire extinguishing system according to claim 1, characterized in that: It also includes a signal feedback device, which is arranged on the branch pipe and connected to the fire extinguishing controller.

5. The pipe network type hot aerosol fire extinguishing system according to claim 1, characterized in that: A low-leakage and high-sealing valve is installed on the starting pipeline.

6. The pipe network type hot aerosol fire extinguishing system according to claim 1, characterized in that: The hot aerosol fire extinguishing device comprises a chassis and an outer box; the fire extinguishing group is arranged on the chassis and located in the outer box.

7. The pipe network type hot aerosol fire extinguishing system according to claim 6, characterized in that: Each fire extinguishing group includes a first barrel body, a second barrel body and an inner box frame; the first barrel body is arranged on the chassis, an air outlet hole is arranged at the bottom of the first barrel body, and a first coolant is arranged between the inner wall of the first barrel body and the outer wall of the second barrel body; the second barrel body is arranged in the first barrel body, an initiator is arranged at the bottom of the second barrel body, a generator is arranged in the lower part of the second barrel body, a second coolant is arranged in the upper part of the second barrel body, and an aerosol cavity is formed between the top of the second barrel body and the top of the first barrel body; the inner box frame is arranged on the chassis, and an aerosol channel is formed between the inner side wall of the inner box frame and the outer side wall of the first barrel body.

8. The pipe network type hot aerosol fire extinguishing system according to claim 7, characterized in that: A power box is arranged on the outer box, a power source is arranged in the power box, and the power source is connected with the initiator through a thermal line.

9. The pipe network type hot aerosol fire extinguishing system according to claim 7, characterized in that: The one-way sealing valve comprises a valve body and a valve disc; the valve body is arranged on the cover plate, a fluid channel is arranged in the valve body, one end of the fluid channel is an input end, the other end of the fluid channel is an output end, and the end of the valve body forms an outlet; the valve disc is rotatably arranged in the valve body, and the valve disc has an open state and a closed state; In the open state, the valve disc does not contact the output end, so that the input end is connected to the outlet through the output end; in the closed state, the valve disc abuts against the output end, so that the input end is not connected to the outlet.

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