Multifunctional valve and reset valve for deluge valve

Abstract

The utility model discloses a multifunctional valve and a reset valve for a deluge valve, and relates to the technical field of valves of water spraying and fire extinguishing systems. The preformed hole position is formed in the outer shell of the multifunctional valve, so that the multifunctional valve has the function replacement potential, the air guide valve used for the pre-acting valve can be machined into the reset valve capable of being used for the deluge valve through simple machining, and therefore the reset valve can be used for the deluge valve. The air pilot valve and the reset valve do not need to be produced through different production lines respectively, and the production input cost and the machining difficulty are remarkably reduced. When the reserved hole position and the interior of the outer shell are in a non-communication state, the multifunctional valve can be used as an air guide valve of a pre-acting valve; through simple machining, after the reserved hole position is communicated with the lower cavity in the outer shell, the obtained multifunctional valve can be used as a reset valve of the deluge valve.

Description

Technical Field

[0001] The utility model relates to the technical field of valves for water spray fire extinguishing systems, in particular to a multifunctional valve and a reset valve for a deluge valve. Background Art

[0002] The valve of the sprinkler system is an important part of the automatic sprinkler system, which is mainly used to control the switch and direction of the water flow. According to different uses and functions, the valves of the sprinkler system commonly used include pre-action valves and deluge valves. In the deluge valve, a reset valve is usually required to cooperate with the opening and closing of the main valve to control the switch and direction of the water flow. In the pre-action valve, an air pilot valve is usually required to cooperate with the opening and closing of the main valve to control the switch and direction of the water flow.

[0003] Due to the different working principles of the deluge valve and the pre-action valve, the reset valve used in the deluge valve and the air pilot valve used in the pre-action valve are usually two valves with different structures. In particular, the structures of the valve bodies of the two are very different, and it is difficult to process the air pilot valve into a reset valve that can be used for the deluge valve through simple processing. This makes the existing reset valve and air pilot valve usually need to be produced using different production lines, resulting in high production costs and high processing difficulty. Therefore, it is urgent to develop a multifunctional valve with functional replacement potential, so that the air pilot valve used in the pre-action valve can be transformed into a reset valve that can be used for the deluge valve through simple processing. Utility Model Content

[0004] In view of the above-mentioned defects, one of the purposes of the utility model is to provide a multifunctional valve. The multifunctional valve of the utility model has the potential for functional replacement. Through simple processing, the air pilot valve used for the pre-action valve can be processed into a reset valve that can be used for the deluge valve, so that there is no need to use different production lines to produce different valves.

[0005] To produce air guide valves and reset valves, significantly reducing production input costs and processing difficulty.

[0006] Another object of the utility model is to provide a reset valve for a deluge valve, which is formed by adding a third channel to the multifunctional valve.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] A multifunctional valve, comprising an outer shell, a valve core, a first diaphragm, a second diaphragm and a third diaphragm, wherein the valve core is slidably mounted inside the outer shell, the first diaphragm, the second diaphragm and the third diaphragm are arranged on the valve core in sequence from top to bottom, and the centers of the first diaphragm, the second diaphragm and the third diaphragm are fixedly connected to the valve core, and the outer peripheral sides of the first diaphragm, the second diaphragm and the third diaphragm are fixedly connected to the outer shell;

[0009] A first chamber is formed between the first membrane petal and the inner top surface of the outer shell, and an interface communicating with the first chamber is provided on the top of the outer shell, and the interface is used to connect with an external gas pipeline or water pipeline;

[0010] The outer shell 1 is provided with a sliding cavity, an upper cavity and a lower cavity inside, and the sliding cavity, the upper cavity and the lower cavity are respectively located between the second membrane petal and the third membrane petal;

[0011] The upper chamber and the lower chamber are connected through the sliding chamber;

[0012] The side wall of the outer shell is provided with a first channel, a second channel and a reserved hole;

[0013] One end of the first channel is connected to the sliding cavity, and the other end is used to connect to an external component; one end of the second channel is connected to the upper chamber, and the other end is used to connect to an external component; the opening of the reserved hole is toward the outside of the outer shell;

[0014] The up and down sliding movement of the valve core can make the upper chamber communicate with the sliding chamber while the lower chamber is blocked from the sliding chamber, or the lower chamber communicates with the sliding chamber while the upper chamber is blocked from the sliding chamber.

[0015] Preferably, the outer shell comprises a first shell, a second shell and a third shell which are sequentially arranged from top to bottom, the top of the second shell is detachably connected to the first shell, and the bottom of the second shell is detachably connected to the third shell;

[0016] The first diaphragm is sleeved on the outside of the valve core, and the outer periphery of the first diaphragm is fixedly connected to the first shell; the second diaphragm is sleeved on the outside of the valve core, and the outer periphery of the second diaphragm is installed between the first shell and the second shell; the third diaphragm is sleeved on the outside of the valve core, and the outer periphery of the third diaphragm is installed between the second shell and the third shell;

[0017] The second shell is provided with the sliding cavity, the first channel, the second channel, the reserved hole, the upper chamber and the lower chamber;

[0018] The first shell is provided with the interface.

[0019] Preferably, the first shell includes a top cover and a connecting body, the connecting body is detachably connected to the top of the second shell, and the top cover is detachably mounted on the top of the connecting body;

[0020] The outer periphery of the first membrane petal is fixedly installed between the top cover and the connecting body, and a first chamber is formed between the top cover and the first membrane petal;

[0021] The interface is arranged on the top of the top cover.

[0022] Preferably, the valve core comprises a control rod, a first fastener, a second fastener, a first fixing member and a second fixing member;

[0023] The first fixing member and the second fixing member are respectively sleeved on the outside of the control rod, and the first fixing member is located inside the upper chamber, and the second fixing member is located inside the lower chamber;

[0024] The first fastener is connected to the top of the control rod, and the second fastener is connected to the bottom of the control rod;

[0025] The middle part of the second membrane petal is installed between the first fastener and the first fixing member, and the middle part of the third membrane petal is installed between the second fixing member and the second fastener;

[0026] When the valve core slides downward, the top opening of the sliding chamber is blocked by the first fixing member; when the valve core slides upward, the bottom opening of the sliding chamber is blocked by the second fixing member.

[0027] Preferably, the valve core further includes a first hollow stopper and a second hollow stopper, wherein the first hollow stopper is installed at the top of the sliding cavity, and the second hollow stopper is installed at the bottom of the sliding cavity;

[0028] The inner diameter of the first hollow stopper is smaller than the outer diameter of one end of the first fixing member facing the first hollow stopper; the inner diameter of the second hollow stopper is smaller than the outer diameter of one end of the second fixing member facing the second hollow stopper;

[0029] The first hollow limiter and the second hollow limiter are both provided with chamfers at one end away from the sliding cavity; when the valve core is in a balanced state, the opening of the first hollow limiter is blocked by the first fixing member, and when the valve core is in a lifted state, the opening of the second hollow limiter is blocked by the second fixing member.

[0030] Preferably, the first fastener comprises a clamping portion and a first connecting portion, the first connecting portion is connected to the top of the control rod, and the clamping portion is installed outside the first connecting portion;

[0031] The valve core also includes a clamping plate, which is sleeved on the outside of the first connecting portion and located above the clamping portion. The middle portion of the first membrane flap is installed between the clamping portion and the clamping plate.

[0032] Preferably, the outer shell further includes a return spring, one end of the return spring is connected to the valve core, and the other end is connected to the bottom of the outer shell. Under the elastic force of the return spring, the valve core has a tendency to move upward.

[0033] A reset valve for a deluge valve is applied to the above-mentioned multifunctional valve. A third channel is further provided inside the outer shell. One end of the third channel is communicated with the reserved hole, and the other end is communicated with the lower chamber.

[0034] Preferably, the reset valve for the deluge valve further comprises a reset assembly and a bottom cover, and the top of the bottom cover is sleeved on the outside of the third shell;

[0035] The reset assembly includes a handle, a rotating shaft and a cam, wherein the rotating shaft is installed through the bottom cover, the cam is installed in the inner cavity of the bottom cover, and the cam and the rotating shaft are fixedly connected; the handle is fixedly connected to one end of the rotating shaft and is installed outside the bottom cover;

[0036] The bottom of the second fastener extends through the third shell to the inner cavity of the bottom cover, and the bottom of the second fastener abuts against the cam.

[0037] Preferably, the second fastener comprises a second connecting portion and an abutting portion, the second connecting portion is sleeved on the outside of the valve core, and the abutting portion extends through the third housing to the inner cavity of the bottom cover;

[0038] The bottom of the abutting portion abuts against the cam.

[0039] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0040] 1. The outer shell of the multifunctional valve of the present technical solution is formed by assembling the first shell, the second shell and the third shell, and a reserved hole is provided in the second shell, so that the multifunctional valve of the present technical solution has the potential for functional replacement. Through simple processing, the air pilot valve used for the pre-action valve can be processed into a reset valve that can be used for the shower valve. Therefore, there is no need to use different production lines to produce the air pilot valve and the reset valve respectively, which significantly reduces the production input cost and processing difficulty. Specifically, when the reserved hole 124 is not connected to the inside of the outer shell 1, the multifunctional valve of the present technical solution can be used as the air pilot valve of the pre-action valve; after the reserved hole is connected to the lower chamber inside the outer shell through simple processing, the multifunctional valve of the present technical solution can be used as the reset valve of the shower valve.

[0041] 2. The outer shell of the present technical solution is formed by assembling the first shell, the second shell and the third shell, which makes the assembly and disassembly of the outer shell simple and convenient for installing internal components such as the valve core.

[0042] 3. This technical solution develops a multifunctional valve that can change its function through simple processing, thereby improving the functional expansion potential of the valve, thereby increasing product types and reducing duplication of production links. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic structural diagram of a multifunctional valve (the second channel and the reserved hole are arranged oppositely) in one embodiment of the utility model;

[0044] Figure 2 for Figure 1 A cross-sectional view of the multifunctional valve shown;

[0045] Figure 3 It is a cross-sectional view of another embodiment of the utility model in which the multifunctional valve (the second channel and the first channel are arranged oppositely) is in a closed state;

[0046] Figure 4 for Figure 3 A cross-sectional view of the multifunctional valve shown in an open state;

[0047] Figure 5 This is a schematic structural diagram of a reset valve for a deluge valve in one embodiment of the utility model;

[0048] Figure 6 for Figure 5 A cross-sectional view of a reset valve for a deluge valve shown in a closed state;

[0049] Figure 7 for Figure 5 A cross-sectional view of a reset valve for a deluge valve shown in an open state;

[0050] Among them, the outer shell 1, the valve core 2, the first diaphragm 3, the second diaphragm 4, the third diaphragm 5, the reset assembly 6, the bottom cover 7, the reset spring 8, the first shell 11, the second shell 12, the third shell 13, the control rod 21, the first fastener 22, the clamp 23, the first fixing member 24, the second fixing member 25, the second fastener 26, the first hollow limit member 27, the second hollow limit member 28, the handle 61, the rotating shaft 62, the cam 63, the top cover 111, the connecting body 112, the first chamber 113, the interface 1111, the sliding chamber 121, the first channel 122, the second channel 123, the reserved hole 124, the third channel 125, the upper chamber 126, the lower chamber 127, the clamping part 221, the first connecting part 222, the second connecting part 261, and the abutting part 262. DETAILED DESCRIPTION

[0051] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0052] In the description of the present invention, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is more than two.

[0054] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "splicing", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] like Figure 1-3As shown, a multifunctional valve comprises an outer shell 1, a valve core 2, a first diaphragm 3, a second diaphragm 4 and a third diaphragm 5, wherein the valve core 2 is slidably mounted inside the outer shell 1, the first diaphragm 3, the second diaphragm 4 and the third diaphragm 5 are sequentially arranged on the valve core 2 along a straight line, and the centers of the first diaphragm 3, the second diaphragm 4 and the third diaphragm 5 are fixedly connected to the valve core 2, and the outer peripheral sides of the first diaphragm 3, the second diaphragm 4 and the third diaphragm 5 are fixedly connected to the outer shell 1;

[0056] A first chamber 113 is formed between the first membrane flap 3 and the inner top surface of the outer shell 1. The top of the outer shell 1 is provided with an interface 1111 communicating with the first chamber 113. The interface 1111 is used to connect with an external gas pipeline or water pipeline.

[0057] The outer shell 1 is provided with a sliding chamber 121, an upper chamber 126 and a lower chamber 127, wherein the sliding chamber 121, the upper chamber 126 and the lower chamber 127 are respectively located between the second membrane petal 4 and the third membrane petal 5;

[0058] The upper chamber 126 and the lower chamber 127 are connected through the sliding chamber 121;

[0059] The side wall of the outer shell 1 is provided with a first channel 122, a second channel 123 and a reserved hole 124;

[0060] One end of the first channel 122 is connected to the sliding cavity 121, and the other end is used to connect to an external component; one end of the second channel 123 is connected to the upper chamber 126, and the other end is used to connect to an external component; the opening of the reserved hole 124 faces the outside of the outer shell 1;

[0061] The up and down sliding movement of the valve core 2 can make the upper chamber 126 communicate with the sliding chamber 121 while the lower chamber 127 is blocked from the sliding chamber 121, or the lower chamber 127 communicates with the sliding chamber 121 while the upper chamber 126 is blocked from the sliding chamber 121.

[0062] Further description, the outer shell 1 includes a first shell 11, a second shell 12 and a third shell 13 arranged in sequence from top to bottom, the top of the second shell 12 is detachably connected to the first shell 11, and the bottom of the second shell 12 is detachably connected to the third shell 13;

[0063] The first diaphragm 3 is sleeved on the outside of the valve core 2, and the outer periphery of the first diaphragm 3 is fixedly connected to the first housing 11; the second diaphragm 4 is sleeved on the outside of the valve core 2, and the outer periphery of the second diaphragm 4 is installed between the first housing 11 and the second housing 12; the third diaphragm 5 is sleeved on the outside of the valve core 2, and the outer periphery of the third diaphragm 5 is installed between the second housing 12 and the third housing 13;

[0064] The second shell 12 is provided with the sliding cavity 121, the first channel 122, the second channel 123, the reserved hole 124, the upper chamber 126 and the lower chamber 127;

[0065] The first housing 11 is provided with the interface 1111 .

[0066] It is worth noting that the outer shell 1 of the present technical solution is formed by assembling the first shell 11, the second shell 12 and the third shell 13, so that the assembly and disassembly of the first shell 11, the second shell 12 and the third shell 13 are simple, and the installation of internal components such as the valve core is convenient. At the same time, the multifunctional valve of the present technical solution is provided with a reserved hole 124 in the second shell 12, so that the multifunctional valve of the present technical solution has the potential for functional replacement. Through simple processing, the air guide valve used for the pre-action valve can be processed into a reset valve that can be used for the shower valve. Therefore, there is no need to use different production lines to produce the air guide valve and the reset valve respectively, which significantly reduces the production input cost and processing difficulty. Specifically, when the reserved hole 124 is not connected to the interior of the outer shell 1 (such as Figure 2 As shown), the multifunctional valve of the present technical solution can be used as an air guide valve of a pre-action valve; after simple processing, the reserved hole 124 is connected with the lower chamber 127 inside the outer shell 1, and the multifunctional valve of the present technical solution can be used as a reset valve of a deluge valve.

[0067] Further explanation, the outer shell 1 of the present technical solution is formed by assembling a first shell 11, a second shell 12 and a third shell 13. The assembly and disassembly of each part are simple. When the diaphragm is damaged or individual components of the valve core are damaged, the outer shell 1 can be quickly disassembled, so that the diaphragm and the internal components of the valve can be replaced conveniently and quickly, thus avoiding the entire valve from being scrapped.

[0068] In one embodiment of the present technical solution, when the reserved hole 124 is not connected to the inside of the outer shell 1 ( Figure 3As shown), the multifunctional valve of the present technical solution can be used as the air pilot valve of the pre-action valve. At this time, the working principle of the multifunctional valve in the pre-action valve is as follows: First, in the pre-action valve, the interface 1111 of the multifunctional valve is connected to the gas pipeline, and the other end of the gas pipeline is connected to the closed nozzle; one end of the first channel 122 is connected to the sliding chamber 121, and the other end is connected to the external drain pipe; one end of the second channel 123 is connected to the upper chamber 126, and the other end is connected to the upper chamber of the main valve in the pre-action valve. When there is no fire outside (such as Figure 3 As shown), the closed nozzle is closed, and an air compressor is used to introduce gas into the first chamber 113 through the gas pipeline. Since the closed nozzle is in a closed state at this time, the first diaphragm 3 is subjected to a downward force by the action of the gas; at the same time, the upper chamber of the main valve in the pre-action valve is filled with water, and the upper chamber of the main valve is connected to the second channel 123. At this time, the water in the upper chamber of the main valve flows into the upper chamber 126, so that the second diaphragm 4 is subjected to an upward force, but the downward force of the air pressure on the first diaphragm 3 is greater than the upward force of the water pressure on the second diaphragm 4 (for example, by setting the area of ​​the first diaphragm 3 to be larger than the area of ​​the second diaphragm 4, due to the difference in force areas, the downward force on the first diaphragm 3 is greater than the upward force on the second diaphragm 4), so that the valve core moves downward until the top opening of the sliding chamber 121 is blocked, so that the upper chamber 126 is not connected to the sliding chamber 121, that is, the multi-function valve is in a closed state at this time. At this time, the water in the upper chamber of the main valve in the pre-action valve cannot be discharged through the multi-function valve, so that the upper chamber of the main valve is always kept full of water, that is, the main valve is in a closed state, thereby blocking the water inlet pipeline of the pre-action valve, and the water flow in the water inlet pipeline cannot flow to the closed nozzle through the main valve, so that the pre-action valve is in a closed state.

[0069] When a fire occurs outside (such as Figure 4 As shown), due to the high external temperature, the closed nozzle bursts open, and the gas in the gas pipeline is discharged through the closed nozzle after the burst. Due to the discharge of gas, the downward force of the air pressure on the first diaphragm 3 gradually decreases. When it is less than the force on the second diaphragm 4, the second diaphragm 4 drives the valve core 2 to move upward, so that the top opening of the sliding cavity 121 is opened, and the upper chamber 126 is connected to the sliding cavity 121, the bottom opening is blocked, and the multi-function valve is opened. At this time, the water in the upper cavity of the main valve can be discharged through the second channel 123, the upper chamber 126, the sliding cavity 121 and the first channel 122, so that the main valve is depressurized. The main valve is in an open state, and the water flow of the external water inlet pipeline can flow to the closed nozzle after the burst through the main valve, thereby achieving the effect of spraying water to extinguish the fire.

[0070] In another embodiment of the present technical solution, after the reserved hole 124 is connected to the lower chamber 127 inside the outer shell 1 by simple processing (such as forming a third channel 125 by simple processing inside the second shell 12, and connecting the reserved hole 124 and the lower chamber 127 through the third channel 125), the multifunctional valve of the present technical solution can be used as a reset valve of the rain valve (such as Figure 5 As shown), at this time, the working principle of the multifunctional valve in the deluge valve is as follows: in the deluge valve, the reserved hole 124 of the multifunctional valve is connected to the external water inlet pipeline; one end of the first channel 122 is connected to the sliding cavity 121, and the other end is connected to the upper cavity of the main valve; the second channel 123 is connected to the external drain pipe. When there is no fire outside (such as Figure 6 As shown), at this time, the deluge valve needs to be controlled to be in a closed state, that is, the main valve in the deluge valve needs to be controlled to be in a closed state, that is, the upper chamber of the main valve needs to be filled with water, thereby blocking the water inlet pipe and preventing the water in the external water inlet pipe from spraying out through the main valve when there is no fire. Firstly, a downward force is applied to the first diaphragm 3 (for example, water can be introduced into the first chamber 113 to apply a downward force to the first diaphragm 3). Since the valve core and the first diaphragm 3 are connected in a transmission manner, the first diaphragm 3 moves downward under the downward force, driving the valve core 2 to move downward until the top opening of the sliding chamber 121 is blocked, so that the multi-function valve is closed. Then, water is input into the reserved hole 124 through an external water inlet pipe. The water flows from the reserved hole 124 through the third channel 125, the lower chamber 127, the sliding chamber 121 and the first channel 122 in sequence, and flows into the upper chamber of the main valve, so that the upper chamber of the main valve is filled with water, and the main valve is in a closed state. The water in the external water inlet pipe cannot pass through the main valve, and thus cannot be sprayed out through the open nozzle. Furthermore, since the top opening of the sliding cavity 121 is blocked and the external water inlet pipeline is always connected to the reserved hole 124, the water in the upper cavity of the main valve cannot be discharged at this time, and the upper cavity can always be kept full of water, that is, the main valve is always kept closed. Figure 7As shown), the valve core is moved upward by the action of external force (such as by turning the handle 61 to move the valve core upward to discharge the water in the first chamber 113), so that the valve core is in a jacking state. At this time, the bottom opening of the sliding chamber 121 is closed and the top opening is open. At this time, the sliding chamber 121 and the lower chamber 127 are not connected, and the sliding chamber 121 and the upper chamber 126 are connected. Based on the fact that the sliding chamber 121 and the lower chamber 127 are not connected, the water in the external water inlet pipeline cannot enter the upper chamber of the main valve through the multi-function valve, that is, water can no longer be injected into the upper chamber of the main valve. At the same time, based on the fact that the sliding chamber 121 and the upper chamber 126 are connected at this time, the water in the upper chamber of the main valve will pass through the first channel 122, the sliding chamber 121 and the upper chamber 126 in turn, and be discharged through the second channel 123, so that the main valve is depressurized and the main valve is opened, so that the water in the external water inlet pipeline can pass through the main valve and flow to the open sprinkler, thereby achieving the effect of spraying water to extinguish the fire.

[0071] Further explanation, the first shell 11 includes a top cover 111 and a connecting body 112, the connecting body 112 is detachably connected to the top of the second shell 12, and the top cover 111 is detachably installed on the top of the connecting body 112;

[0072] The outer periphery of the first membrane flap 3 is fixedly installed between the top cover 111 and the connecting body 112, and a first chamber 113 is formed between the top cover 111 and the first membrane flap 3;

[0073] The interface 1111 is disposed on the top of the top cover 111 .

[0074] It is worth noting that the first shell 11 in the technical solution is formed by the top cover 111 and the connecting body 112, so that the outer shell 1 of the technical solution is formed by assembling multiple modules. During production, the top cover 111, the connecting body 112, the second shell 12 and the third shell 13 can be produced separately, the production method is simple, and the outer shell 1 is easy to assemble and disassemble. At the same time, the outer periphery of the first membrane flap 3 can be fixed by the top cover 111 and the connecting body 112.

[0075] To further illustrate, the valve core 2 includes a control rod 21, a first fastener 22, a second fastener 26, a first fixing member 24 and a second fixing member 25;

[0076] The first fixing member 24 and the second fixing member 25 are respectively sleeved on the outside of the control rod 21, and the first fixing member 24 is located inside the upper chamber 126, and the second fixing member 25 is located inside the lower chamber 127;

[0077] The first fastener 22 is connected to the top of the control rod 21, and the second fastener 26 is connected to the bottom of the control rod 21;

[0078] The middle part of the second membrane petal 4 is installed between the first fastener 22 and the first fixing member 24, and the middle part of the third membrane petal 5 is installed between the second fixing member 25 and the second fastener 26;

[0079] When the valve core 2 slides downward, the top opening of the sliding chamber 121 is blocked by the first fixing member 24, so that the top opening of the sliding chamber 121 is closed; when the valve core 2 slides upward, the bottom opening of the sliding chamber 121 is blocked by the second fixing member 25, so that the top and bottom of the sliding chamber 121 are closed.

[0080] In this technical solution, the middle part of the second diaphragm flap 4 is installed between the first fastener 22 and the first fixing member 24, and the middle part of the third diaphragm flap 5 is installed between the second fixing member 25 and the second fastener 26, so that the second diaphragm flap 4 and the third diaphragm flap 5 are both transmission-connected to the control rod 21, thereby controlling the closing and opening of the multi-function valve.

[0081] Further explanation, the valve core 2 further includes a first hollow stopper 27 and a second hollow stopper 28, wherein the first hollow stopper 27 is installed at the top of the sliding cavity 121, and the second hollow stopper 28 is installed at the bottom of the sliding cavity 121;

[0082] The inner diameter of the first hollow stopper 27 is smaller than the outer diameter of the end of the first fixing member 24 facing the first hollow stopper 27; the inner diameter of the second hollow stopper 28 is smaller than the outer diameter of the end of the second fixing member 25 facing the second hollow stopper 28;

[0083] The first hollow limit member 27 and the second hollow limit member 28 are both chamfered at one end away from the sliding cavity 121; when the valve core 2 is in a balanced state, the opening of the first hollow limit member 27 is blocked by the first fixing member 24, and when the valve core 2 is in a lifted state, the opening of the second hollow limit member 28 is blocked by the second fixing member 25.

[0084] The technical solution sets the inner diameter of the first hollow limiter 27 to be smaller than the outer diameter of the end of the first fixing member 24 facing the first hollow limiter 27; the inner diameter of the second hollow limiter 28 to be smaller than the outer diameter of the end of the second fixing member 25 facing the second hollow limiter 28, so that when the control rod 21 moves downward, the first fixing member can block the opening of the first hollow limiter 27 to close the top opening of the sliding cavity 121, and when the control rod 21 moves upward, the second fixing member 25 can block the opening of the second hollow limiter 28 to close the bottom opening of the sliding cavity 121.

[0085] Preferably, the first hollow stopper 27 and the second hollow stopper 28 are both provided with chamfers at one end away from the sliding cavity 121. Preferably, the first fixing member 24 and the second fixing member 25 are both provided with mounting grooves for mounting elastic pads at one end facing the first hollow stopper 27, and elastic pads are installed in the mounting grooves. Through the cooperation of the chamfers and the elastic pads, a better effect of covering the top opening or the bottom opening of the sliding cavity 121 can be achieved.

[0086] More preferably, the inner diameter of the first hollow stopper 27 and the inner diameter of the second hollow stopper 28 are both smaller than the outer diameter of the elastic pad, thereby achieving the effect of covering the top opening or the bottom opening of the sliding cavity 121 .

[0087] Further explanation, the first fastener 22 includes a clamping portion 221 and a first connecting portion 222, the first connecting portion 222 is connected to the top of the control rod 21, and the clamping portion 221 is installed outside the first connecting portion 222;

[0088] The valve core 2 further includes a clamping plate 23 , which is sleeved on the outside of the first connecting portion 222 and located above the clamping portion 221 . The middle portion of the first membrane flap 3 is installed between the clamping portion 221 and the clamping plate 23 .

[0089] Specifically, the first membrane flap 3 and the control rod 21 are connected in transmission through the clamping action of the clamping plate 23 and the clamping portion 221 .

[0090] Preferably, the clamping plate 23 can be fixedly sleeved on the outside of the first connecting portion 222 by being threadedly connected to the top of the first connecting portion 222 through a nut.

[0091] Further description, the outer shell 1 also includes a return spring 8, one end of the return spring 8 is connected to the valve core 2, and the other end is connected to the bottom of the outer shell 1. Under the elastic force of the return spring 8, the valve core 2 has a tendency to move upward.

[0092] A reset valve for a deluge valve is applied to the above-mentioned multifunctional valve. A third channel 125 is further provided inside the outer shell 1. One end of the third channel 125 is connected to the reserved hole 124, and the other end is connected to the lower chamber 127.

[0093] This technical solution provides a third channel 125 in the second shell 12 to achieve a functional transformation of the multifunctional valve, so that the multifunctional valve is transformed from being used as an air pilot valve of a pre-action valve to being used as a reset valve of a deluge valve, thereby achieving a functional transformation.

[0094] Further explanation, the reset valve for the deluge valve further includes a reset assembly 6 and a bottom cover 7, and the top of the bottom cover 7 is sleeved on the outside of the third housing 13;

[0095] The reset assembly 6 includes a handle 61, a rotating shaft 62 and a cam 63. The rotating shaft 62 is installed through the bottom cover 7. The cam 63 is installed in the inner cavity of the bottom cover 7, and the cam 63 and the rotating shaft 62 are fixedly connected. The handle 61 is fixedly connected to one end of the rotating shaft 62 and is installed outside the bottom cover 7.

[0096] The bottom of the second fastener 26 passes through the third housing 13 and extends to the inner cavity of the bottom cover 7 , and the bottom of the second fastener 26 abuts against the cam 63 .

[0097] In one embodiment of the utility model, the second housing 12 is further provided with a third channel 125, one end of the third channel 125 is connected to the reserved hole 124, and the other end is connected to the lower chamber 127. At this time, the multifunctional valve can be used as a reset valve of the deluge valve. When in use, at this time, the valve core can be lifted up by the reset component 6, so that the bottom opening of the sliding chamber 121 is blocked and the top opening is opened, and the first chamber 113 is drained to open the multifunctional valve, so that the main valve of the deluge valve is depressurized and the deluge valve is opened, thereby achieving the effect of spraying water to extinguish the fire. When the fire is extinguished, the multifunctional valve can be reset by the reset component 6, so that the top opening of the sliding chamber 121 is blocked and the bottom opening of the sliding chamber 121 is opened, so that water can be re-injected into the upper chamber of the main valve, so that the main valve is closed, and then the deluge valve is closed.

[0098] Specifically, the reset assembly 6 includes a handle 61, a rotating shaft 62 and a cam 63. Since the bottom of the second fastener 26 abuts against the cam 63 and the second fastener 26 is fixedly connected to the control rod 21, the control rod 21 can be raised or lowered by twisting the handle 61, thereby lifting or resetting the entire valve core.

[0099] Further explanation, the second fastener 26 includes a second connecting portion 261 and an abutting portion 262, the second connecting portion 261 is sleeved on the outside of the valve core 2, and the abutting portion 262 passes through the third housing 13 and extends to the inner cavity of the bottom cover 7;

[0100] The bottom of the abutting portion 262 abuts against the cam 63;

[0101] The technical solution provides the abutment portion 262 so that the abutment portion 262 can extend through the third shell 13 to the inner cavity of the bottom cover 7 and abut against the cam 63, so that the reset assembly 6 can achieve the effect of lifting or resetting the valve core.

[0102] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A multifunctional valve, characterized in that: The invention comprises an outer shell, a valve core, a first diaphragm, a second diaphragm and a third diaphragm, wherein the valve core is slidably mounted inside the outer shell, the first diaphragm, the second diaphragm and the third diaphragm are arranged in sequence on the valve core along a straight line, and the centers of the first diaphragm, the second diaphragm and the third diaphragm are fixedly connected to the valve core, and the outer peripheral sides of the first diaphragm, the second diaphragm and the third diaphragm are fixedly connected to the outer shell; A first chamber is formed between the first membrane petal and the inner top surface of the outer shell, and an interface communicating with the first chamber is provided on the top of the outer shell, and the interface is used to connect with an external gas pipeline or water pipeline; The outer shell is provided with a sliding cavity, an upper cavity and a lower cavity inside, and the sliding cavity, the upper cavity and the lower cavity are respectively located between the second membrane petal and the third membrane petal; The upper chamber and the lower chamber are connected through the sliding chamber; The side wall of the outer shell is provided with a first channel, a second channel and a reserved hole; One end of the first channel is connected to the sliding cavity, and the other end is used to connect to an external component; one end of the second channel is connected to the upper chamber, and the other end is used to connect to an external component; the opening of the reserved hole is toward the outside of the outer shell; The up and down sliding movement of the valve core can make the upper chamber communicate with the sliding chamber while the lower chamber is blocked from the sliding chamber, or the lower chamber communicates with the sliding chamber while the upper chamber is blocked from the sliding chamber.

2. The multifunctional valve according to claim 1, characterized in that: The outer shell comprises a first shell, a second shell and a third shell which are sequentially arranged from top to bottom, the top of the second shell is detachably connected to the first shell, and the bottom of the second shell is detachably connected to the third shell; The first diaphragm is sleeved on the outside of the valve core, and the outer periphery of the first diaphragm is fixedly connected to the first shell; the second diaphragm is sleeved on the outside of the valve core, and the outer periphery of the second diaphragm is installed between the first shell and the second shell; the third diaphragm is sleeved on the outside of the valve core, and the outer periphery of the third diaphragm is installed between the second shell and the third shell; The second shell is provided with the sliding cavity, the first channel, the second channel, the reserved hole, the upper chamber and the lower chamber; The first shell is provided with the interface.

3. The multifunctional valve according to claim 2, characterized in that: The first shell includes a top cover and a connecting body, the connecting body is detachably connected to the top of the second shell, and the top cover is detachably mounted on the top of the connecting body; The outer periphery of the first membrane petal is fixedly installed between the top cover and the connecting body, and a first chamber is formed between the top cover and the first membrane petal; The interface is arranged on the top of the top cover.

4. The multifunctional valve according to claim 2, characterized in that: The valve core includes a control rod, a first fastener, a second fastener, a first fixing member and a second fixing member; The first fixing member and the second fixing member are respectively sleeved on the outside of the control rod, and the first fixing member is located inside the upper chamber, and the second fixing member is located inside the lower chamber; The first fastener is connected to the top of the control rod, and the second fastener is connected to the bottom of the control rod; The middle part of the second membrane petal is installed between the first fastener and the first fixing member, and the middle part of the third membrane petal is installed between the second fixing member and the second fastener; When the valve core slides downward, the top opening of the sliding chamber is blocked by the first fixing member; When the valve core slides upward, the bottom opening of the sliding chamber is blocked by the second fixing member.

5. The multifunctional valve according to claim 4, characterized in that: The valve core further includes a first hollow stopper and a second hollow stopper, wherein the first hollow stopper is installed at the top of the sliding cavity, and the second hollow stopper is installed at the bottom of the sliding cavity; The inner diameter of the first hollow stopper is smaller than the outer diameter of one end of the first fixing member facing the first hollow stopper; the inner diameter of the second hollow stopper is smaller than the outer diameter of one end of the second fixing member facing the second hollow stopper; The first hollow limiter and the second hollow limiter are both provided with chamfers at one end away from the sliding cavity; when the valve core is in a balanced state, the opening of the first hollow limiter is blocked by the first fixing member, and when the valve core is in a lifted state, the opening of the second hollow limiter is blocked by the second fixing member.

6. The multifunctional valve according to claim 4, characterized in that: The first fastener includes a clamping portion and a first connecting portion, the first connecting portion is connected to the top of the control rod, and the clamping portion is installed outside the first connecting portion; The valve core also includes a clamping plate, which is sleeved on the outside of the first connecting portion and located above the clamping portion. The middle portion of the first membrane flap is installed between the clamping portion and the clamping plate.

7. The multifunctional valve according to claim 1, characterized in that: The outer shell also includes a return spring, one end of which is connected to the valve core, and the other end of which is connected to the bottom of the outer shell. Under the elastic force of the return spring, the valve core has a tendency to move upward.

8. A reset valve for a deluge valve, applied to the multifunctional valve according to any one of claims 1 to 7, characterized in that: A third channel is further provided inside the outer shell, one end of the third channel is communicated with the reserved hole, and the other end of the third channel is communicated with the lower chamber.

9. The reset valve for a deluge valve according to claim 8, characterized in that: The reset valve for the deluge valve further comprises a reset assembly and a bottom cover, wherein the top of the bottom cover is sleeved on the outside of the third housing; The reset assembly includes a handle, a rotating shaft and a cam, wherein the rotating shaft is installed through the bottom cover, the cam is installed in the inner cavity of the bottom cover, and the cam and the rotating shaft are fixedly connected; the handle is fixedly connected to one end of the rotating shaft and is installed outside the bottom cover; The bottom of the second fastener extends through the third shell to the inner cavity of the bottom cover, and the bottom of the second fastener abuts against the cam.

10. The reset valve for a deluge valve according to claim 9, characterized in that: The second fastener includes a second connecting portion and an abutting portion, the second connecting portion is sleeved on the outside of the valve core, and the abutting portion passes through the third housing and extends to the inner cavity of the bottom cover; The bottom of the abutting portion abuts against the cam.

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