Fusing valve and fire extinguishing system

Abstract

The utility model is suitable for the technical field of fire fighting equipment, and provides a fusing valve and a fire extinguishing system, and the fusing valve comprises a first valve body, a valve rod and an exhaust structure. A sealing cavity, a water inlet channel and a water outlet channel are formed in the first valve body, the water inlet channel communicates with the water outlet channel through a communicating hole, and an exhaust hole communicating with the sealing cavity is formed in the side wall of the first valve body. One end of the valve rod extends into the sealing cavity, the other end of the valve rod extends into the water outlet channel and covers the communicating hole, a water flow channel is formed in the valve rod, and water in the water inlet channel flows into the sealing cavity through the water flow channel. The exhaust structure is arranged on the first valve body and used for changing the communication state of the exhaust hole and the outside. According to the fusing valve, the exhaust hole and the exhaust structure are arranged to control the communication state of the sealing cavity and the outside, on the premise that the sealing performance between the water inlet channel and the water outlet channel is not affected, gas in the sealing cavity can be exhausted, the risk that metal components in the sealing cavity are corroded is reduced, and the reliability of the fusing valve is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire-fighting equipment, and more particularly to a fuse valve and a fire-fighting system. BACKGROUND

[0002] The fuse valve is a device capable of being automatically opened when a fire occurs, so that the water in the upstream pipe network can enter the downstream pipe network to extinguish the fire, and plays an important role in the field of fire fighting. The main structure of the fuse valve includes a valve body, a valve rod and a closed glass bulb. The valve body is connected with the upstream pipe and the downstream pipe. An upper cavity is formed in the valve body. One end of the valve rod is located at the connection between the upstream pipe and the downstream pipe, and the other end of the valve rod extends into the upper cavity. Part of the water in the upstream pipe can enter the upper cavity through the water flow channel in the valve rod, so as to increase the pressure in the upper cavity, thereby stably covering the valve rod at the connection between the upstream pipe and the downstream pipe. The upper cavity is connected with the closed glass bulb. When the fuse valve receives a fire alarm signal or when the detected ambient temperature reaches a certain value, the closed glass bulb can be automatically broken, so that the upper cavity is depressurized, the pressure of the valve rod acting on the connection between the upstream pipe and the downstream pipe is reduced, and the water in the upstream pipe can push open the valve rod and enter the downstream pipe. The downstream pipe is usually connected with a spray head, and the water is sprayed from the spray head to extinguish the fire at the fire scene.

[0003] However, since the current fuse valve, when the water in the upstream pipe enters the upper cavity and the pressure in the upper cavity is increased to be sufficient to stably cover the valve rod at the connection between the upstream pipe and the downstream pipe, there is part of gas in the upper cavity, so that the upper cavity forms a gas-liquid coexistence space, and the metal components in the upper cavity are easily corroded, thereby reducing the reliability of the fuse valve. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiment of the present application is to provide a fuse valve and a fire-fighting system, aiming at solving the technical problem of low reliability of the fuse valve in the prior art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is to provide a fuse valve, comprising:

[0006] A first valve body, an internal sealing cavity, a water inlet channel and a water outlet channel are formed in the first valve body. The water inlet channel and the water outlet channel are connected through a communication hole. An exhaust hole is formed in the side wall of the first valve body and is connected with the sealing cavity.

[0007] A valve rod, one end of the valve rod extends into the sealing cavity, and the other end of the valve rod extends into the water outlet channel and covers the communication hole. A water flow channel is formed in the valve rod. The water flow channel is used for water in the water inlet channel to flow into the sealing cavity.

[0008] An exhaust structure is arranged on the first valve body. The exhaust structure is used to change the communication state between the exhaust hole and the outside.

[0009] In a possible design, the exhaust structure comprises a second valve body and an adjusting assembly, the second valve body is arranged on the first valve body and is provided with an exhaust passage therethrough, the exhaust passage is in communication with the exhaust hole, and the adjusting assembly is installed on the second valve body and is used to adjust the opening or closing state of the exhaust passage so as to change the communication state of the exhaust hole with the outside.

[0010] In a possible design, an installation portion is arranged on the outer side of the first valve body in a protruding manner, the exhaust hole penetrates through the installation portion and the side wall of the first valve body, and the second valve body is connected with the installation portion.

[0011] In a possible design, one end of the second valve body is inserted into the exhaust hole and connected with the inner wall of the exhaust hole, or the installation portion is inserted into the exhaust passage and connected with the inner wall of the exhaust passage.

[0012] In a possible design, the adjusting assembly comprises a valve core and a handle, the valve core is located in the exhaust passage, and the valve core is provided with a vent hole therethrough; the side wall of the second valve body is provided with a through hole in communication with the exhaust passage, one end of the handle is located outside the second valve body, and the other end of the handle extends into the exhaust passage through the through hole and is connected with the valve core; the handle is used to drive the valve core to rotate about a rotation axis, and the rotation axis is arranged at an angle with respect to the axes of the exhaust passage and the vent hole.

[0013] In a possible design, the first valve body has a top side wall, and the exhaust hole is arranged in the top side wall.

[0014] In a possible design, the valve rod comprises a shaft body, a piston and a cover portion, one end of the shaft body extends into the water outlet passage and is connected with the cover portion, the cover portion covers the communication hole, the other end of the shaft body extends into the sealing cavity, the piston is located in the sealing cavity and is sleeved on the shaft body, and the outer circumferential surface of the piston is in contact with the inner wall of the sealing cavity; the water flow passage is formed in the shaft body, and the water flow passage is formed with a water inlet and a water outlet on the outer surface of the shaft body, the water inlet is in communication with the water inlet passage, and the water outlet is in communication with the sealing cavity and is located on the side of the piston away from the cover portion.

[0015] In a possible design, a flexible sealing gasket is installed on the side of the cover portion facing the communication hole, and the cover portion covers the communication hole through the flexible sealing gasket.

[0016] In a possible design, the side wall of the first valve body is further provided with a pressure relief hole in communication with the sealing cavity, and the fuse valve further comprises a closed glass bulb and an electric starting device, the closed glass bulb is installed outside the first valve body and covers the pressure relief hole, and the electric starting device is installed on the first valve body and located beside the closed glass bulb, the electric starting device is configured to detect the ambient temperature and receive an alarm signal, and the electric starting device is capable of breaking the closed glass bulb when the ambient temperature is detected to be higher than a preset value or when the alarm signal is received.

[0017] The application further provides a fire extinguishing system, which comprises an upstream pipeline, a downstream pipeline and the fuse valve provided in any of the technical solutions.

[0018] The fuse valve provided by the application has the following beneficial effects: compared with the prior art, the fuse valve provided by the application is provided with an exhaust hole in communication with the sealing cavity on the first valve body, and an exhaust structure is arranged to change the communication state of the exhaust hole with the outside, so that the exhaust hole is in communication with the outside through the exhaust structure during the process that the water in the water inlet channel enters the sealing cavity along the water flow channel in the valve rod, and the gas in the sealing cavity can be discharged to the outside through the exhaust hole, the exhaust hole is separated from the outside through the exhaust structure when the sealing cavity is filled with water, so that the sealing cavity is in a sealed state, and the water pressure in the sealing cavity can be increased by continuously filling water in the sealing cavity, so that the other end of the valve rod can be stably covered on the communication hole, and the sealing property between the water inlet channel and the water outlet channel is ensured.

[0019] As can be seen from the above, by arranging the exhaust hole and the exhaust structure, the gas in the sealing cavity can be discharged without affecting the sealing property between the water inlet channel and the water outlet channel, so as to reduce the risk of corrosion of the metal components in the sealing cavity, and improve the reliability of the fuse valve.

[0020] The fire extinguishing system provided by the application has the following beneficial effects: compared with the prior art, the fire extinguishing system provided by the application comprises the fuse valve provided in any of the technical solutions, and therefore has all the beneficial effects described above, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0022] Figure 1is a half cutaway schematic view of a fuse valve provided by an embodiment of the present application.

[0023] The label details involved in the above-mentioned drawings are as follows:

[0024] 100, first valve body, 110, valve seat, 120, valve sleeve, 121, bottom wall, 122, peripheral side wall, 130, valve cover, 131, mounting portion, 132, exhaust hole, 133, pressure relief hole, 140, water outlet passage, 141, first chamber, 142, water outlet hole, 150, water inlet passage, 151, second chamber, 152, water inlet hole, 160, sealing cavity, 171, partition plate, 1711, communication hole, 172, first connecting plate, 173, second connecting plate, 200, valve rod, 210, shaft body, 220, cover portion, 230, flexible sealing gasket, 240, piston, 300, exhaust structure, 310, second valve body, 311, exhaust passage, 320, valve core, 321, air hole, 330, handle, 400, closed glass bubble. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the indicated structure or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0029] In order to illustrate the technical solutions described in the present application, the following will be described in detail in combination with specific drawings and embodiments.

[0030] As shown in Figure 1 An embodiment of the present application provides a fuse valve, which comprises a first valve body 100, a valve rod 200 and an exhaust structure 300. The first valve body 100 is internally formed with a sealing cavity 160, a water inlet channel 150 and a water outlet channel 140, the water inlet channel 150 and the water outlet channel 140 are communicated through a communication hole 1711, and a side wall of the first valve body 100 is provided with an exhaust hole 132 which is communicated with the sealing cavity 160. One end of the valve rod 200 extends into the sealing cavity 160, and the other end extends into the water outlet channel 140 and covers the communication hole 1711, and the valve rod 200 is internally formed with a water flow channel which is used for water in the water inlet channel 150 to flow into the sealing cavity 160. The exhaust structure 300 is arranged on the first valve body 100, and is used for changing the communication state of the exhaust hole 132 with the outside.

[0031] The fuse valve provided by the embodiment of the present application can be applied to a fire extinguishing system, the water inlet channel 150 is used for being communicated with an upstream pipeline in the fire extinguishing system, and the water outlet channel 140 is used for being communicated with a downstream pipeline in the fire extinguishing system. Water flows into the water inlet channel 150 from the upstream pipeline, and then enters the sealing cavity 160 from the water inlet channel 150 through the water flow channel. The fuse valve provided by the embodiment of the present application is provided with the exhaust hole 132 which is communicated with the sealing cavity 160 on the first valve body 100, and the exhaust structure 300 is arranged for changing the communication state of the exhaust hole 132 with the outside, so that the exhaust hole 132 is communicated with the outside through the exhaust structure 300 in the process of water entering the sealing cavity 160, so that the gas in the sealing cavity 160 can be exhausted to the outside through the exhaust hole 132. When the sealing cavity 160 is filled with water, that is, when the gas in the sealing cavity 160 is basically exhausted, the exhaust hole 132 is separated from the outside through the exhaust structure 300, so that the sealing cavity 160 is in a sealed state, and the water pressure in the sealing cavity 160 can be increased by continuously filling water into the sealing cavity 160, so that the other end of the valve rod 200 can be stably covered on the communication hole 1711, and the sealing property between the water inlet channel 150 and the water outlet channel 140 is ensured.

[0032] As can be seen, by arranging the exhaust hole 132 and the exhaust structure 300, the gas in the sealing cavity 160 can be exhausted without affecting the sealing between the water inlet channel 150 and the water outlet channel 140, so as to reduce the risk of corrosion of the metal components in the sealing cavity 160, thereby improving the reliability of the fuse valve. It can be understood that the metal components in the sealing cavity 160 refer to parts made of metal materials, and are not specific to a certain structure. For example, at least part of the structure of the valve rod 200 is made of metal materials, and when the part of the valve rod 200 made of metal materials is located in the sealing cavity 160, the metal components can include the valve rod 200.

[0033] In the embodiments of the present application, the exhaust structure 300 can include a sealing cover, a sealing column or an exhaust valve. In one example, the exhaust structure 300 includes a sealing cover, which covers the opening of the exhaust hole 132 formed on the outer side of the first valve body 100. By moving the sealing cover, the exhaust hole 132 can be opened or closed to adjust the communication state of the exhaust hole 132 with the outside. In another example, the exhaust structure 300 includes a sealing column, which is inserted into the exhaust hole 132. When the sealing column is inserted into the exhaust hole 132, the exhaust hole 132 can be blocked to separate the exhaust hole 132 from the outside. When the sealing column is pulled out of the exhaust hole 132, the exhaust hole 132 can be communicated with the outside. In yet another example, the exhaust structure 300 includes an exhaust valve. For example, the exhaust structure 300 includes a second valve body 310 and an adjusting assembly. The second valve body 310 is arranged on the first valve body 100 and penetrates the second valve body 310 to form an exhaust channel 311, which is communicated with the exhaust hole 132. The adjusting assembly is installed on the second valve body 310 and is used to adjust the opening or closing state of the exhaust channel 311 to change the communication state of the exhaust hole 132 with the outside. When the adjusting assembly adjusts the exhaust channel 311 to the open state, the exhaust hole 132 is communicated with the outside through the exhaust channel 311, so that the gas in the sealing cavity 160 can be exhausted to the outside. When the adjusting assembly adjusts the exhaust channel 311 to the closed state, the exhaust hole 132 can be separated from the outside, so that the sealing cavity 160 is in a sealed state, thereby ensuring the sealing between the water channel and the water outlet channel 140.

[0034] In one possible design, the outer side of the first valve body 100 protrudes to form a mounting portion 131, the exhaust hole 132 penetrates the mounting portion 131 and the side wall of the first valve body 100, and the second valve body 310 is connected with the mounting portion 131. By arranging the mounting portion 131, the connection area with the second valve body 310 can be increased to facilitate the installation of the second valve body 310, thereby improving the installation stability of the second valve body 310.

[0035] Optionally, the second valve body 310 and the mounting portion 131 can be connected by screwing, welding or interference fit, etc. In some embodiments, the second valve body 310 and the mounting portion 131 are connected by plugging, which is more convenient and fast. For example, one end of the second valve body 310 is plugged into the exhaust hole 132 and connected with the inner wall of the exhaust hole 132. Alternatively, the mounting portion 131 is plugged into the exhaust passage 311 and connected with the inner wall of the exhaust passage 311.

[0036] In a specific example, the outer periphery of one end of the second valve body 310 is formed with external threads, at least part of the inner wall of the exhaust hole 132 is formed with internal threads, and the end of the second valve body 310 formed with external threads is plugged into the exhaust hole 132. By the cooperation of the internal threads and the external threads, the second valve body 310 is mounted on the first valve body 100. In this way, the connection reliability between the second valve body 310 and the first valve body 100 is improved.

[0037] In a possible design, the adjusting assembly includes a valve core 320 and a handle 330. The valve core 320 is located in the exhaust passage 311, and the valve core 320 is provided with a vent hole 321. The side wall of the second valve body 310 is provided with a through hole communicating with the exhaust passage 311. One end of the handle 330 is located outside the second valve body 310, and the other end extends into the exhaust passage 311 through the through hole and is connected with the valve core 320. The handle 330 is used to drive the valve core 320 to rotate around the rotation axis. The rotation axis is arranged at an angle with respect to the axes of the exhaust passage 311 and the vent hole 321. In this way, when the valve core 320 is driven to rotate around the rotation axis, the angle between the axis of the vent hole 321 and the axis of the exhaust passage 311 can be adjusted. When the angle between the axis of the vent hole 321 and the axis of the exhaust passage 311 is less than a critical value, at least part of the opening formed by the vent hole 321 on the surface of the valve core 320 is opposite to the exhaust passage 311. At this time, the exhaust passage 311 is open, and the exhaust hole 132 is communicated with the outside through the exhaust passage 311. When the angle between the axis of the vent hole 321 and the axis of the exhaust passage 311 is greater than the critical value, the opening formed by the vent hole 321 on the surface of the valve core 320 is opposite to the inner wall of the exhaust passage 311, and the solid part of the valve core 320 blocks the exhaust passage 311. At this time, the exhaust passage 311 is closed, and the exhaust hole 132 is separated from the outside. According to the above arrangement, the operator can change the communication state of the exhaust hole 132 with the outside by operating the handle 330, which is convenient for the operator to operate.

[0038] In other possible designs, the adjusting assembly can also include a cover body which covers one of the openings formed by the exhaust passage 311 on the outer side of the second valve body 310. By moving the cover body, the opening or closing state of the exhaust passage 311 can be controlled.

[0039] In a possible design, the first valve body 100 has a top sidewall, and the exhaust hole 132 is formed in the top sidewall. In this way, as the water level in the sealed cavity 160 rises, the gas can be smoothly discharged from the exhaust hole 132, so as to discharge the gas in the sealed cavity 160 more thoroughly, to further reduce the risk of corrosion of the metal components in the sealed cavity 160, thereby further improving the reliability of the fuse valve.

[0040] In a possible design, the valve rod 200 includes a shaft body 210, a piston 240, and a cover 220, one end of the shaft body 210 extends into the water outlet channel 140 and is connected to the cover 220, the cover 220 covers the communication hole 1711, the other end of the shaft body 210 extends into the sealed cavity 160, the piston 240 is located in the sealed cavity 160 and is sleeved on the shaft body 210, and the outer circumferential surface of the piston 240 is in contact with the inner wall of the sealed cavity 160. A water flow channel is formed in the shaft body 210, and the water flow channel is formed with a water inlet and a water outlet on the outer surface of the shaft body 210, the water inlet is in communication with the water inlet channel 150, and the water outlet is in communication with the sealed cavity 160 and is located on the side of the piston 240 away from the cover 220. In this way, when the water in the water inlet channel 150 enters the sealed cavity 160 along the water flow channel, the piston 240 can be subjected to an abutting force towards the cover 220, so that the piston 240 is subjected to an abutting force of the shaft body 210 close to the cover 220, and the cover 220 can be stably covered on the communication hole 1711, so as to improve the sealing between the water outlet channel 140 and the water inlet channel 150, thereby improving the reliability of the fuse valve.

[0041] Optionally, the cover 220 is in a disc-shaped structure, and the axis of the cover 220 coincides with the axis of the shaft body 210. The cover 220 and the shaft body 210 can be connected by screwing, clamping, welding, or any other way. In an example, the valve rod 200 further includes a first nut, the cover 220 is provided with a first through hole in the extending direction of the axis thereof, and the end of the shaft body 210 close to the communication hole 1711 penetrates through the first through hole and is threadedly connected with the first nut, so as to lock the cover 220 on the shaft body 210.

[0042] Optionally, the piston 240 is provided with a second through hole, and the shaft body 210 is inserted into the second through hole. Optionally, the shaft body 210 comprises a first shaft segment and a second shaft segment, the first shaft segment and the second shaft segment are connected and coaxially arranged, and the outer diameter of the first shaft segment is smaller than the outer diameter of the second shaft segment. The end of the second shaft segment away from the first shaft segment extends into the water outlet channel 140 and is connected with the cover 220, the end of the second shaft segment close to the first shaft segment extends into the sealing cavity 160 and is connected with the first shaft segment, the first shaft segment is inserted into the second through hole, and the piston 240 abuts against the second shaft segment. The valve rod 200 further comprises a second nut, which is threadedly connected with the first shaft segment to lock the piston 240 on the first shaft segment. In this embodiment, the water outlet is formed on the outer surface of the first shaft segment, and the water inlet is formed on the side surface of the second shaft segment facing the communication hole 1711.

[0043] In a possible design, a flexible sealing gasket 230 is mounted on the side of the cover 220 facing the communication hole 1711, and the cover 220 covers the communication hole 1711 through the flexible sealing gasket 230. It can be understood that the flexible sealing gasket 230 is a structure with certain flexibility, and the flexible sealing gasket 230 can be more closely attached to the surface of the water outlet channel 140 surrounding the outer periphery of the communication hole 1711, and the sealing performance between the water outlet channel 140 and the water inlet channel 150 can be further improved. Optionally, the flexible sealing gasket 230 can be made of flexible materials such as plastic or rubber.

[0044] In some embodiments, as Figure 1As shown, the first valve body 100 comprises a valve seat 110, which is formed with an inner cavity, and the side wall of the valve seat 110 is further formed with a water inlet hole 152, a water outlet hole 142 and a mounting hole, the water inlet hole 152 and the water outlet hole 142 are respectively located on opposite sides of the inner cavity in the horizontal direction, and the mounting hole is located above the inner cavity. A separation part is formed in the inner cavity, which comprises a separation plate 171, a first connecting plate 172 and a second connecting plate 173, the separation plate 171 is arranged parallel to the horizontal direction, and the outer circumferential surface of the separation plate 171 is connected with the inner surface of the inner cavity, a communication hole 1711 is arranged vertically through the separation plate 171, the separation plate 171 separates the inner cavity into a first chamber 141 and a second chamber 151, the first chamber 141 is located above the separation plate 171, and the second chamber 151 is located below the separation plate 171. The first connecting plate 172 is arranged parallel to the vertical direction, the first connecting plate 172 is connected to one side of the separation plate 171 close to the water inlet hole 152, and the first connecting plate 172 is connected with the inner surface of the first chamber 141. The second connecting plate 173 is also arranged parallel to the vertical direction, the second connecting plate 173 is connected to one side of the separation plate 171 close to the water outlet hole 142, and the second connecting plate 173 is connected with the inner surface of the second chamber 151. In this embodiment, the first chamber 141 and the second chamber 151 are separated by the first connecting plate 172, the second connecting plate 173 and the separation plate 171, and the first chamber 141 and the second chamber 151 are only communicated through the communication hole 1711 on the separation plate 171. In this embodiment, the water outlet hole 142 and the mounting hole are respectively communicated with the first chamber 141, and the water inlet hole 152 is communicated with the second chamber 151. The water inlet hole 152 and the second chamber 151 jointly form the above-mentioned water inlet channel 150, the water inlet hole 152 is used to communicate with the upstream pipeline, and the water outlet hole 142 and the first chamber 141 jointly form the above-mentioned water outlet channel 140, the water outlet hole 142 is used to communicate with the downstream pipeline.

[0045] The first valve body 100 further comprises a valve sleeve 120 and a valve cover 130. The valve sleeve 120 comprises a peripheral side wall 122 and a bottom wall 121. The peripheral side wall 122 is arranged to form an inner hole, and the bottom wall 121 is arranged in the inner hole, and the outer peripheral surface of the bottom wall 121 is connected to the inner side surface of the peripheral side wall 122. The axis of the inner hole extends in parallel with the vertical direction, and optionally, the axis of the inner hole coincides with the axis of the shaft body 210. The bottom of the peripheral side wall 122 extends into the mounting hole and is threadedly connected to the inner wall of the mounting hole. The valve cover 130 is arranged to cover the end of the peripheral side wall 122 away from the valve seat 110, and the valve cover 130 is threadedly connected to the peripheral side wall 122. The valve cover 130, the peripheral side wall 122 and the bottom wall 121 jointly form a sealing cavity 160. In this embodiment, the exhaust hole 132 is arranged to pass through the valve cover 130, and the mounting portion 131 is arranged on the side of the valve cover 130 away from the sealing cavity 160. The bottom wall 121 of the valve sleeve 120 is arranged to pass through a third through hole, and the shaft body 210 is arranged to pass through the second through hole, the third through hole and the first through hole in sequence from top to bottom. The cover portion 220 is arranged to be mounted at the bottom end of the shaft body 210, and the cover portion 220 is arranged in the first chamber 141 and abuts against the upper surface of the partition plate 171, so that the cover portion 220 covers the communication hole 1711 of the partition plate 171.

[0046] In a possible design, the side wall of the first valve body 100 is further arranged with a pressure relief hole 133 communicating with the sealing cavity 160. The fuse valve further comprises a closed glass bulb 400 and an electric starting device. The closed glass bulb 400 is arranged to be mounted on the outside of the first valve body 100 and cover the pressure relief hole 133. The electric starting device is arranged to be mounted on the first valve body 100 and located beside the closed glass bulb 400. The electric starting device is arranged to detect the ambient temperature and receive an alarm signal, and the electric starting device is capable of breaking the closed glass bulb 400 when the detected ambient temperature is higher than a preset value or when the alarm signal is received. When the closed glass bulb 400 is broken, the sealing cavity 160 is relieved of pressure, the downward abutting force on the piston 240 in the sealing cavity 160 is reduced, the downward pressure on the valve rod 200 is reduced, and the abutting force of the valve rod 200 on the communication hole 1711 is reduced. When the pressure in the sealing cavity 160 is less than the water pressure in the water inlet channel 150, the water in the water inlet channel 150 can push the valve rod 200 to move upward, the communication hole 1711 is opened, and the water in the water inlet channel 150 can enter the water outlet channel 140 and enter the downstream pipeline. The downstream pipeline is connected with a spray head, and the water in the downstream pipeline can be sprayed out through the spray head to extinguish the fire.

[0047] Another embodiment of the present application also provides a fire extinguishing system, which comprises an upstream pipeline, a downstream pipeline and the fuse valve provided by any of the above embodiments. The water inlet passage 150 in the fuse valve is communicated with the upstream pipeline, and the water outlet passage 140 in the fuse valve is communicated with the downstream pipeline. Since the fire extinguishing system provided by the embodiment of the present application comprises the fuse valve provided by any of the above embodiments, at least all the above beneficial effects are achieved, and thus will not be repeated here.

[0048] In some embodiments, the downstream pipeline is connected with a spray head. When the electric starting device in the fuse valve senses that the external environment temperature value rises to a certain value or receives a fire alarm signal, the electric starting device will break the closed glass bubble 400, so as to release the pressure of the sealed cavity 160, reduce the downward abutting force of the piston 240 in the sealed cavity 160, reduce the downward pressure of the valve rod 200, and further reduce the abutting force of the valve rod 200 covering at the communication hole 1711. When the pressure in the sealed cavity 160 is less than the water pressure in the water inlet passage 150, the water in the water inlet passage 150 can push the valve rod 200 to move upward, the communication hole 1711 is opened, and the water in the water inlet passage 150 can enter the water outlet passage 140 and enter the downstream pipeline. The downstream pipeline is connected with a spray head, and the water in the downstream pipeline can be sprayed out through the spray head to extinguish the fire.

[0049] The above only describes the optional embodiments of the present application, and does not limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fuse valve, characterized by, The utility model relates to a valve, and particularly relates to a valve with adjustable exhaust structure. The utility model discloses a valve with adjustable exhaust structure, which comprises a first valve body, an exhaust structure and a valve rod. The first valve body is internally formed with a sealing cavity, a water inlet channel and a water outlet channel. The water inlet channel and the water outlet channel are communicated through a communication hole.

2. The fuse valve of claim 1, wherein The side wall of the first valve body is provided with an exhaust hole communicated with the sealing cavity.

3. The fuse valve of claim 2, wherein One end of the valve rod extends into the sealing cavity, and the other end extends into the water outlet channel and covers the communication hole.

4. The fuse valve of claim 3, wherein The interior of the valve rod is formed with a water flow channel.

5. The fuse valve of claim 2, wherein The water flow channel is used for water in the water inlet channel to flow into the sealing cavity.

6. A fuse valve according to any one of claims 1 to 5, wherein The exhaust structure is arranged on the first valve body.

7. A fuse valve according to any one of claims 1 to 5, wherein The exhaust structure is used for changing the communication state of the exhaust hole with the outside.

8. The fuse valve of claim 7, wherein, The exhaust structure comprises a second valve body and an adjusting assembly. The second valve body is arranged on the first valve body and is provided with an exhaust channel penetratingly. The exhaust channel is communicated with the exhaust hole. The adjusting assembly is installed on the second valve body. The adjusting assembly is used for adjusting the open or closed state of the exhaust channel to change the communication state of the exhaust hole with the outside. The outside of the first valve body is provided with a mounting portion protruding. The exhaust hole penetrates the mounting portion and the side wall of the first valve body. The second valve body is connected with the mounting portion. One end of the second valve body is inserted into the exhaust hole and connected with the inner wall of the exhaust hole. Alternatively, the mounting portion is inserted into the exhaust channel and connected with the inner wall of the exhaust channel. The adjusting assembly comprises a valve core and a handle. The valve core is located in the exhaust channel and is provided with an air hole penetratingly. The side wall of the second valve body is provided with a through hole communicated with the exhaust channel. One end of the handle is located outside the second valve body, and the other end extends into the exhaust channel through the through hole and is connected with the valve core. The handle is used for rotating the valve core around a rotation axis. The rotation axis is arranged at an angle with the axis of the exhaust channel and the air hole. The first valve body has a top side wall. The exhaust hole is arranged on the top side wall. The valve rod comprises a shaft body, a piston and a covering portion. One end of the shaft body extends into the water outlet channel and is connected with the covering portion. The covering portion covers the communication hole. The other end of the shaft body extends into the sealing cavity. The piston is located in the sealing cavity and is sleeved on the shaft body. The outer circumferential surface of the piston is in contact with the inner wall of the sealing cavity. The water flow channel is formed in the shaft body. The water flow channel is formed with a water inlet and a water outlet on the outer surface of the shaft body. The water inlet is communicated with the water inlet channel. The water outlet is communicated with the sealing cavity and is located on the side of the piston away from the covering portion. The side of the covering portion facing the communication hole is provided with a flexible sealing gasket. The covering portion covers the communication hole through the flexible sealing gasket.

9. The fuse valve of any one of claims 1 to 5, wherein The side wall of the first valve body is further provided with a pressure relief hole in communication with the sealing cavity, the fuse valve further comprises a closed glass bulb and an electric starting device, the closed glass bulb is installed outside the first valve body and covers the pressure relief hole, the electric starting device is installed on the first valve body and beside the closed glass bulb, the electric starting device is used for detecting ambient temperature and receiving an alarm signal, and the electric starting device can break the closed glass bulb when detecting that the ambient temperature is higher than a preset value or when receiving the alarm signal.

10. A fire extinguishing system, characterized in that The fuse valve comprises an upstream pipeline, a downstream pipeline and the fuse valve according to any one of claims 1 to 9, the water inlet channel in the fuse valve is in communication with the upstream pipeline, and the water outlet channel in the fuse valve is in communication with the downstream pipeline.

Images