An automatic drainage fine mist zoning control valve box

Abstract

The application discloses a fine mist partition control valve box with automatic drainage, belongs to the related technical field of fire fighting, and comprises a valve box main body, which is internally provided with a hollow structure, wherein a control system comprises a region valve box controller, an intermediate pipeline, a water inlet and outlet unit and a control unit; the region valve box controller is used for controlling the control unit; the control unit is installed outside the intermediate pipeline; and the bottom of the intermediate pipeline is connected with the water inlet and outlet unit. The application has the beneficial effects that when the electric valve or the electromagnetic valve in the valve box fails to cause water leakage, low-pressure water flow can be discharged through the high-low pressure automatic drainage assembly instead of being sprayed from the water mist nozzle, so that the protection area is prevented from being flooded due to mis-spraying, and the damage to the equipment, personnel and property in the protection area is reduced. The low-pressure water flow is discharged through the drainage device, so that the water damage can be effectively reduced, and the equipment and facilities in the protection area are protected.

Description

Technical Field

[0001] This application relates to the field of fire protection technology, and in particular to a fine mist zone control valve box for automatic drainage. Background Technology

[0002] The application of fine water mist in firefighting began in the 1940s, primarily in special locations such as transportation vehicles. Now, due to environmental concerns, halon fire extinguishing agents are being phased out, while the potential environmental advantages of fine water mist as a fire extinguishing agent are leading to its expanding application scope. Research on fine water mist fire extinguishing systems for residential buildings, flammable liquid storage facilities, and electrical equipment has yielded encouraging results.

[0003] Research on water mist fire suppression systems in China began in the late 1990s. It is a new type of fire protection technology developed based on traditional water sprinkler systems. In recent years, my country has actively conducted research on fine water mist fire suppression systems, which have now been put into numerous practical engineering applications.

[0004] Advantages of fine water mist fire suppression systems: high-efficiency heat absorption, rapid cooling, quick suffocation fire suppression, blocking radiant heat, adsorbing harmful smoke gases, purifying the environment, and providing balanced cooling; safe, energy-saving, and environmentally friendly green disaster prevention technology; high efficiency, strong continuous fire suppression capability, good electrical insulation, good purification effect, no requirements for the sealed or pressure-resistant nature of the protected space, wide applicability, space saving, quick installation, extremely low operation and maintenance costs, and high cost-effectiveness. The low water consumption and high fire suppression efficiency make fine water mist fire suppression systems widely used in applications such as archives, energy storage compartments, wind turbine nacelles, data centers, hospitals, and libraries.

[0005] Zone control valves are a key component of fine water mist fire suppression systems. A fine water mist fire suppression system consists of fine water mist extinguishing devices, zone control valves, and fine water mist nozzles for each protected zone. A fine water mist protected zone can be divided into multiple independent areas, each corresponding to a set of zone control valves. The fire alarm control panel links to the internal controller of the zone control valve, driving electric valves, electric shut-off valves, or electric solenoid valves to open and initiate fire suppression. The fire-fighting water used in the system is affected by factors such as geographical location, site conditions, and cutting and welding construction, resulting in alkalinity of the water, a high concentration of suspended rust ions, and the presence of floating rust deposits due to the constant water filling of the closed pipe network. However, after prolonged periods of inactivity and repeated opening and closing, solenoid valves or electric valves often experience jamming and sealing failures, leading to leakage in the zone control valves. When water leakage accumulates to a certain level over a long period, it reaches the fine water mist nozzles of the corresponding protected zone, and is then sprayed or dripped from the nozzles at the top of the protected zone. This drips onto the protected items (archives, libraries, electrical equipment, cultural relics, data centers, battery packs in energy storage compartments, transformers, etc.), causing damage to the protected items, resulting in property loss and accidents, as disclosed in application number 202221646370.9, a high-pressure fine water mist zone control valve for fire control. Summary of the Invention

[0006] One of the objectives of this application is to solve the problem that water leakage often occurs at the electric valve body of the fine water mist zone control valve box in the current market, and to provide a fine mist zone control valve box with automatic drainage.

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows: an automatic drainage fine mist zone control valve box, comprising a valve box body with a hollow internal structure to provide installation space for the control system. The control system includes a zone valve box controller, an intermediate pipeline, inlet / outlet water units, and a control unit. The zone valve box controller controls the control unit. The control unit is installed outside the intermediate pipeline, and the bottom of the intermediate pipeline is connected to the inlet / outlet water units for water flow. The control unit includes a pipe clamp, a high-pressure ball valve, a pressure switch, and a control... The system includes a ball valve, a pressure gauge, and an automatic switching valve assembly. The pipe clamp is used to fix the position of the intermediate pipeline. A high-pressure ball valve, a pressure switch, a control ball valve, a pressure gauge, and an automatic switching valve assembly are sequentially arranged outside the intermediate pipeline to control the water flow. A high- and low-pressure automatic drainage assembly is also installed on the outlet pipe network of the automatic switching valve assembly. The outer side of the high- and low-pressure automatic drainage assembly and the drain pipe are interconnected to discharge the leakage water generated by the automatic switching valve assembly. The drain pipe has a perforation that penetrates the surface of the valve box body on the outside of the valve box body.

[0008] Preferably, the valve box body includes a box body, a box cover, and a box top. The box body is provided with a hinged box cover, and the top of the box body is equipped with a box top with an inclined end face. The back of the box body is provided with a mounting plate that connects to the external wall. The bottom of the drain pipe is connected to the drainage unit for monitoring the drainage of the fine mist zone control valve boxes arranged at equal intervals. The drainage unit includes a main drain pipe and a connecting pipe. The main drain pipe and the drain pipe are threaded together. A connecting pipe that penetrates the main drain pipe is installed in the middle thread, and a water flow sensor is provided at the top of the connecting pipe for water flow monitoring.

[0009] Preferably, the outer side of the high and low pressure automatic drainage component is also provided with a flow guiding unit connected to the drainage pipe. The inner side of the area valve box controller and the flow guiding unit are both provided with mounting plates for disassembly and installation with the inner wall of the box. The water inlet and outlet unit includes a water outlet pipe and a water inlet pipe. The water outlet pipe and the water inlet pipe are respectively connected to the output end and the input end of the intermediate pipeline. The bottom of the output end and the input end of the intermediate pipeline are connected to the outside of the box and the external fire pipeline. The water outlet pipe is set towards the lower position of the high pressure ball valve, and the water inlet pipe is set towards the position of the automatic switching valve component. The intermediate pipeline is one of the following: U-shaped, straight, L-shaped, a combination of U-shaped and straight, a combination of straight and L-shaped, a combination of U-shaped and L-shaped, or a combination of U-shaped, straight and L-shaped.

[0010] Preferably, the high and low pressure automatic drainage assembly is an automatic control drainage unit, an automatic drainage valve, or a low-leakage high-sealing valve. The automatic control drainage unit includes a valve cover unit, a valve seat unit, and a drain hole. The lower part of the valve cover unit is threadedly connected to the valve seat unit, and a drain hole is provided at the top of the valve cover unit for the discharge of low-pressure water.

[0011] Preferably, the high and low pressure automatic drainage assembly further includes a valve plate unit and a signal feedback device. The valve plate unit is disposed outside the valve cover unit, and its top end is connected to the signal feedback device.

[0012] Preferably, the valve cover unit includes a valve cover body, a movable valve core, a first O-ring seal, a spring assembly, an intermediate groove, and a through hole. The valve cover body has a convex cross-section, and an intermediate groove penetrating its bottom is provided in the middle of the valve cover body. A movable valve core is provided inside the intermediate groove. The first O-ring seal is provided in the middle of the movable valve core, and a cylindrical groove is provided at its bottom. The cylindrical groove has a through hole that penetrates the intermediate groove. A spring assembly is provided at the top of the movable valve core and connects to the top of the inner wall of the intermediate groove. The top part of the intermediate groove penetrates the drain hole. The automatic switching valve assembly is any one of an electric ball valve, an electric shut-off valve, or a solenoid valve that is driven by electric or pneumatic means.

[0013] Preferably, the valve seat unit includes a valve seat body, an mounting tube, a second O-ring seal, and a locking cavity. The valve seat body has a concave half-section, and its concave structure is connected to the convex structure of the valve cover body by threads. An mounting tube is integrally provided at the bottom of the valve seat body. The top end of the mounting tube is used to connect and pass through an intermediate pipeline. A cylindrical water inlet channel is provided in the middle of the mounting tube, and the cross-sectional dimensions of the water inlet channel are the same as the cross-sectional dimensions of the cylindrical groove at the bottom of the movable valve core. The cylindrical groove corresponds to the position of the water inlet channel. A second O-ring seal is provided at the bottom of the mounting tube for sealing.

[0014] Preferably, the valve plate unit includes a valve plate body, a through pipe, and a detection probe. The outer side of the valve plate body is connected to the outer side of the valve cover unit, and a through pipe is provided inside the valve plate body, corresponding to the drain hole. A detection probe is provided in the middle of the through pipe, and the detection probe is electrically connected to a signal feedback device.

[0015] Preferably, the flow guiding unit includes a drive motor, a fixed housing, a first housing, a second housing, a connecting hose, a rotating shaft, a connecting plate, and an extrusion wheel. The drive motor has an mounting on its back and its top end passes through the fixed housing and is connected to the rotating shaft. The fixed housing and the drive shaft at the bottom and top of the drive motor are coaxially connected. The rotating shaft has connecting plates distributed at equal angles on its exterior, and an extrusion wheel with a shaft connection is provided at the top end of the connecting plate.

[0016] Preferably, a connecting hose is engaged inside the fixed housing, and the top ends of the connecting hose are respectively located inside the first housing and the second housing. The connecting hose in the middle is arc-shaped and the size of the arc corresponds to the size of the compression rollers distributed at equal angles. The first housing and the second housing are connected to the fixed housing. The top end of the connecting hose inside the first housing is connected to the drain hole, and the top end of the connecting hose inside the second housing is connected to the drain pipe.

[0017] Compared with the prior art, the beneficial effects of this application are as follows: (1) Equipped with high and low pressure automatic drainage components, when the electric valve or solenoid valve inside the valve box malfunctions and causes water leakage, the low-pressure water flow can be discharged through the high and low pressure automatic drainage components instead of being sprayed from the fine water mist nozzles. This avoids flooding of the protected area due to accidental spraying and reduces damage to equipment, personnel, and property within the protected area. The spraying of water from the fine water mist nozzles may cause serious damage to electrical equipment, precision instruments, etc., within the protected area. Discharging low-pressure water through the drainage device can effectively reduce this water loss and protect equipment and facilities within the protected area. At the same time, discharging low-pressure water through the drainage device can reduce damage to equipment and maintenance workload caused by accidental spraying, and lower maintenance costs. It also reduces economic losses caused by system downtime.

[0018] (2) A drainage unit is installed, which allows for rapid monitoring of water flow within the main drainage pipe. This enables quick location of the faulty control valve box, preventing system paralysis or delayed fire suppression due to untimely troubleshooting. Once the drainage unit detects abnormal low-pressure water discharge, in conjunction with an external alarm mechanism, the system can immediately issue an alarm, notifying maintenance personnel to handle the situation promptly. This rapid response mechanism effectively prevents equipment damage, electrical short circuits, and other safety hazards caused by water leakage, ensuring the safe operation of the system.

[0019] (3) A flow guiding unit is provided. When the flow guiding unit is working, it can quickly assist in the discharge of water leaking from the high and low pressure drainage components, reduce the accumulation time of water in the valve box, and the quickly discharged water can reach the detection unit in time, reduce false alarms and missed alarms caused by drainage delay, ensure that the system can accurately detect the fault situation, and quickly locate and handle the fault, and ensure that the fine water mist fire extinguishing system can be put into use at any time when a fire occurs, thereby improving the availability of the system. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of the valve box body of the present invention.

[0021] Figure 2This is a schematic diagram of the connection structure between the valve box body and the drainage unit, which are arranged at equal intervals according to the present invention.

[0022] Figure 3 This is a schematic diagram of the U-shaped distribution structure of the internal intermediate pipeline of the valve box body of the present invention.

[0023] Figure 4 This is a schematic diagram of the structure in which the internal intermediate pipeline of the valve box body of the present invention is distributed in a combination of vertical U-shape and straight line.

[0024] Figure 5 This is a schematic diagram of the structure in which the intermediate pipeline inside the valve box body of the present invention is distributed in a combination of horizontal U-shape and straight line.

[0025] Figure 6 This is a schematic diagram of the internal intermediate pipeline of the valve box body of the present invention, which is a combination of L-shaped and straight-line distribution.

[0026] Figure 7 This is a schematic diagram of the connection structure of the control unit, intermediate pipeline and flow guiding unit of the present invention.

[0027] Figure 8 This is a partially enlarged structural diagram of the drainage unit of the present invention.

[0028] Figure 9 This is a top half-sectional view of the high and low pressure automatic drainage component of the present invention.

[0029] Figure 10 This is a schematic diagram of the high and low pressure automatic drainage component of the present invention.

[0030] Figure 11 This is a half-sectional structural diagram of the connection between the valve plate unit and the valve cover unit of the present invention.

[0031] Figure 12 This is a schematic diagram of the flow guiding unit structure of the present invention.

[0032] In the diagram: 1. Valve box body; 11. Box body; 12. Box cover; 13. Box top; 2. Drain pipe; 3. Drainage unit; 31. Main drain pipe; 32. Connecting pipe; 321. Water flow sensor; 4. Zone valve box controller; 5. Intermediate pipeline; 6. Inlet / outlet water unit; 61. Outlet pipe; 62. Inlet pipe; 7. Control unit; 71. Pipe clamp; 72. High-pressure ball valve; 73. Pressure switch; 74. Control ball valve; 75. Pressure gauge; 76. High and low pressure automatic drainage assembly; 77. Electric valve body; 761. Valve cover unit; 762. Valve seat unit; 763. Drain hole; 764. Valve plate unit; 765. 7611 Signal feedback device; 7612 Valve cover body; 7613 Moving valve core; 7614 First O-ring seal; 7615 Spring assembly; 7616 Intermediate groove; 7617 Through hole; 7628 Valve seat body; 7629 Mounting pipe; 7620 Second O-ring seal; 7621 Engaging cavity; 7642 Valve plate body; 7642 Through pipe; 7643 Detection probe; 8645 Flow guiding unit; 865 Drive motor; 866 Fixed housing; 876 First housing; 886 Second housing; 896 Connecting hose; 807 Rotating shaft; 808 Connecting plate; 819 Extrusion wheel. Detailed Implementation

[0033] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0034] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0035] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0036] Example 1 One preferred embodiment of this application, such as Figure 1 and Figure 3As shown, an automatic drainage fine mist zone control valve box includes a valve box body 1, the interior of which is hollow to provide space for the installation of the control system. The control system includes a zone valve box controller 4, an intermediate pipeline 5, an inlet / outlet water unit 6, and a control unit 7. The zone valve box controller 4 controls the control unit 7. The control unit 7 is installed outside the intermediate pipeline 5, and the bottom of the intermediate pipeline 5 is connected to the inlet / outlet water unit 6 for water flow. The control unit 7 includes a pipe clamp 71, a high-pressure ball valve 72, a pressure switch 73, a control ball valve 74, a pressure gauge 75, and an automatic on / off valve. Component 77, the pipe clamp 71 is used to fix the position of the intermediate pipe 5. A high-pressure ball valve 72, a pressure switch 73, a control ball valve 74, a pressure gauge 75 and an automatic switching valve assembly 77 are arranged in sequence on the outside of the intermediate pipe 5 to control the water flow. A high and low pressure automatic drainage assembly 76 is also provided on the outlet pipe network of the automatic switching valve assembly 77. The outer side of the high and low pressure automatic drainage assembly 76 is interconnected with the drain pipe 2 to discharge the leakage water generated by the automatic switching valve assembly 77. The perforation on the outer side of the drain pipe 2 that penetrates the surface of the valve box body 1 is located on the outside of the valve box body 1.

[0037] The valve box body 1 includes a box body 11, a box cover 12, and a box top 13. The box body 11 is provided with a hinged box cover 12 on the outside, and the box top 13 with an inclined end face is installed on the top of the box body 11. The back of the box body 11 is provided with a mounting plate for connection with the external wall.

[0038] The water inlet / outlet unit 6 includes an outlet pipe 61 and an inlet pipe 62. The outlet pipe 61 and the inlet pipe 62 are respectively connected to the output end and the input end of the intermediate pipe 5. The bottom of the output end and the input end of the intermediate pipe 5 are connected to the outside of the housing 11 and the external fire protection pipe. The outlet pipe 61 is positioned below the high-pressure ball valve 72, and the inlet pipe 62 is positioned towards the automatic switch valve assembly 77. The intermediate pipe 5 is one of the following: U-shaped, straight, L-shaped, a combination of U-shaped and straight, a combination of straight and L-shaped, a combination of U-shaped and L-shaped, or a combination of U-shaped, straight and L-shaped.

[0039] This application provides an automatic drainage fine mist zone control valve box with high and low pressure automatic drainage components 76. Specifically, in use, the entire valve box body 1 is first installed between the box body 11 and the external wall under the action of the mounting plate on the outside of the box body 11. After installation, the entire valve box body 1 can start working. When working, the external fire alarm host is linked to the zone valve box controller 4 inside the box body 11, so that the zone valve box controller 4 controls the automatic switching valve component 77 to open. Fire water enters the interior of the intermediate pipeline 5 through the inlet pipe 62 of the inlet and outlet water unit 6, and then is discharged through the outlet pipe 61 on the other side of the inlet and outlet water unit 6. After that, it reaches the nozzle position at the top of the protected zone and is sprayed out to achieve the purpose of fine water mist fire extinguishing.

[0040] When the automatic switching valve assembly 77 malfunctions, causing fire water leakage at the location of the automatic switching valve assembly 77, the high and low pressure automatic drainage assembly 76 is installed at the outlet of the automatic switching valve assembly 77. It can collect the low-pressure leakage water and finally discharge it through the drain pipe 2, thereby avoiding the problem of the low-pressure leakage water spraying out through the sprinkler head at the top of the protective partition.

[0041] Specifically, in this application, when the intermediate pipeline 5 is configured as a U-shape, the distribution position of its internal control unit 7 is referenced to the valve assembly box of model DN25K (see details). Figure 3 When the intermediate conduit 5 is configured as a combination of U-shaped and straight lines or a combination of straight lines and L-shaped lines, the distribution location of its internal control unit 7 is referenced to model DN32 or DN40 (see details). Figure 4 , Figure 5 and Figure 6 Furthermore, other combinations of intermediate pipeline 5 can refer to the following valve group box models: XSWFZ15 / 16SFT, XSWFZ20 / 16SFT, XSWFZ25 / 16SFT, XSWFZ32 / 16SFT, XSWFZ40 / 16SFT, XSWFZ50 / 16SFT, XSWFZ65 / 16SFT, XSWFZ80 / 16SFT, XSWFZ100 / 16SFT.

[0042] Furthermore, the principle of the controller inside the zone control valve box of the fire alarm control panel in this application is based on fire detectors such as smoke detectors and heat detectors installed in the protected area to monitor fire characteristic parameters in the environment in real time, such as smoke concentration and temperature changes. When the detected fire characteristic parameters reach a set threshold, the detector converts the fire signal into an electrical signal. When the fire alarm controller receives the electrical signal from the fire detector, it processes and judges the signal. If it is confirmed as a fire signal, the controller will issue an audible and visual alarm signal and transmit the fire alarm information to the fire linkage controller. The fire linkage controller is the core of the fire linkage control system and receives the fire alarm signal from the fire alarm controller. According to the preset logic relationship and control program, it analyzes and judges the signal. When the fire alarm signal meets the preset linkage logic conditions, such as receiving two independent fire detector signals, the fire linkage controller sends a linkage control signal to the controller inside the zone control valve box according to the preset control sequence. After receiving the control signal from the fire linkage controller, the zone valve box controller 4 inside the zone control valve box executes the corresponding action. For example, it opens the zone automatic switch valve assembly 77, starts the external fire pump, and puts the fine water mist fire extinguishing system into the fire extinguishing state.

[0043] Example 2 In order to promptly detect any leakage in the automatic switching valve assembly 77, according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, the bottom of the drain pipe 2 is connected to the drain unit 3 for monitoring the drainage of the fine mist zone control valve boxes arranged at equal intervals. The drain unit 3 includes a main drain pipe 31 and a connecting pipe 32. The main drain pipe 31 is threadedly connected to the drain pipe 2. A connecting pipe 32 is threaded through the main drain pipe 31, and a water flow sensor 321 is installed at the top of the connecting pipe 32 for water flow monitoring.

[0044] Specifically, when leaking water from the automatic switching valve assembly 77 is discharged through the high and low pressure automatic drainage assembly 76 and reaches the interior of the main drainage pipe 31 via the drainage pipe 2, it will then reach the interior of the connecting pipe 32. The water flow sensor 321 at the top of the connecting pipe 32 will detect the water flow. The water flow sensor 321 converts the water flow signal into an electrical signal, typically a pulse signal or an analog voltage signal. This signal is then amplified, filtered, and converted by a signal conditioning circuit to ensure signal quality and stability. For example, the pulse signal output by a mechanical water flow sensor may need to be converted into flow information using a counter and frequency meter. The processed signal is then transmitted via cable to the alarm controller to complete the alarm operation, achieving the purpose of rapid alarm monitoring.

[0045] Furthermore, according to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the outer side of the high and low pressure automatic drainage component 76 is also provided with a flow guiding unit 8 connected to the drainage pipe 2, and the inner side of the area valve box controller 4 and the flow guiding unit 8 are both provided with mounting plates that can be disassembled and installed on the inner wall of the box body 11.

[0046] Specifically, during operation, in order to ensure that the water in the high and low pressure automatic drainage component 76 can be discharged quickly, the flow guiding unit 8 can be activated so that the water inside the high and low pressure automatic drainage component 76 can be quickly discharged into the drain pipe 2 through the flow guiding unit 8, thereby avoiding water accumulation.

[0047] As a further preferred embodiment of this example 1, according to Figure 9 As shown, the high and low pressure automatic drainage assembly 76 is an automatic control drainage unit, which includes a valve cover unit 761, a valve seat unit 762 and a drain hole 763. The lower part of the valve cover unit 761 is threadedly connected to the valve seat unit 762, and a drain hole 763 is provided at the top of the valve cover unit 761 for the discharge of low pressure water.

[0048] The valve cover unit 761 includes a valve cover body 7611, a movable valve core 7612, a first O-ring seal 7613, a spring assembly 7614, an intermediate groove 7615, and a through hole 7616. The valve cover body 7611 has a convex cross-section, and an intermediate groove 7615 penetrating its bottom is provided in the middle of the valve cover body 7611. The movable valve core 7612 is disposed inside the intermediate groove 7615, and the first O-ring seal is provided in the middle of the movable valve core 7612. The valve assembly 7613 has a cylindrical groove at its bottom and a through hole 7616 that penetrates the intermediate groove 7615. A spring assembly 7614 is provided at the top of the movable valve core 7612 and is connected to the top of the inner wall of the intermediate groove 7615. The top part of the intermediate groove 7615 penetrates the drain hole 763. The automatic switching valve assembly 77 can be any of the following: an electric ball valve, an electric shut-off valve, or a solenoid valve that is driven by electric or pneumatic means.

[0049] The valve seat unit 762 includes a valve seat body 7621, an mounting tube 7622, ​​a second O-ring seal 7623, and a locking cavity 7624. The valve seat body 7621 has a concave half-section, and its concave structure is connected to the convex structure of the valve cover body 7611 by threads. The mounting tube 7622 is integrally provided at the bottom of the valve seat body 7621. The top end of the mounting tube 7622 is used to connect and pass through the intermediate pipeline 5. A cylindrical water inlet channel is provided in the middle of the mounting tube 7622, ​​and the cross-sectional dimensions of the water inlet channel are the same as the cross-sectional dimensions of the cylindrical groove at the bottom of the movable valve core 7612. The cylindrical groove corresponds to the position of the water inlet channel. A second O-ring seal 7623 is provided at the bottom of the mounting tube 7622 for sealing.

[0050] Furthermore, when the automatic switching valve assembly 77 leaks, the water flow inside the inlet pipe 62 will be in a low-pressure state. The leaking low-pressure water flow will reach the cylindrical groove inside the movable valve core 7612 through the water inlet channel inside the mounting pipe 7622. Since there is a through hole 7616 in the cylindrical groove, the low-pressure water flow will reach the interior of the intermediate tank 7615 through the through hole 7616. As the water flow accumulates, when it accumulates to the position of the drain hole 763, the water flow will be discharged through the drain hole 763 and reach the interior of the guide unit 8. Finally, through the discharge work of the guide unit 8, it will reach the interior of the drain pipe 2 and be discharged into the interior of the drain unit 3. Furthermore, when the automatic switching valve assembly 77 is working normally and there is no leakage, when the high-pressure water flows through the inlet channel into the cylindrical groove, the high-pressure water will squeeze the movable valve core 7612, causing it to move upward in the middle of the intermediate groove 7615, pressing the spring assembly 7614. When it reaches the top, the first O-ring seal 7613 is pressed against the inner wall of the valve cover body 7611, thus sealing the bottom of the intermediate groove 7615. This prevents the water from flowing through the intermediate groove 7615 to the drain hole 763. Therefore, as the high-pressure water accumulates, it will directly reach the interior of the intermediate pipe 5, thus completing the continuous flow operation.

[0051] In this application, when the high and low pressure automatic drainage assembly 76 is an automatic drainage valve or a low-leakage high-sealing valve, the automatic drainage valve can discharge the residual water in the pipeline after the automatic switching valve assembly 77 is closed, thus preventing water from accumulating in the pipeline. When there is a small water leakage at the outlet of the automatic switching valve assembly 77, the high and low pressure automatic drainage valve or the low-leakage high-sealing valve can remain closed under normal operating pressure to prevent the system from leaking water from the end nozzles and causing accidents due to small leaks, thereby improving the reliability and stability of the system.

[0052] As a further preferred embodiment of this example 2, according to Figure 10 and Figure 11 As shown, the high and low pressure automatic drainage assembly 76 also includes a valve plate unit 764 and a signal feedback device 765. The valve plate unit 764 is disposed outside the valve cover unit 761, and its top end is connected to the signal feedback device 765.

[0053] The valve plate unit 764 includes a valve plate body 7641, a through pipe 7642, and a detection probe 7643. The outer side of the valve plate body 7641 is connected to the outer side of the valve cover unit 761. The through pipe 7642 is provided inside the valve plate body 7641, and it passes through the drain hole 763. The detection probe 7643 is provided in the middle of the through pipe 7642. The detection probe 7643 is electrically connected to the signal feedback device 765.

[0054] Specifically, when the low-pressure water flow reaches the drain hole 763, it further enters the interior of the through pipe 7642. Since the through pipe 7642 is equipped with a detection probe 7643, it can detect the water flow and transmit the detected electrical signal to the signal feedback device 765 for signal feedback. The water flow will then continue to be guided through the flow guiding unit 8 and discharged directly into the drain pipe 2. When a Hall sensor is used as the water flow detection probe between the detection probe 7643 and the signal feedback device 765, its output electrical signal is directly transmitted to the signal feedback device 765 through a wire, such as the input port of a microcontroller or PLC. However, the present invention does not impose any limitations on this.

[0055] In this application, according to Figure 12 As shown, the flow guiding unit 8 includes a drive motor 81, a fixed housing 82, a first housing 83, a second housing 84, a connecting hose 85, a rotating shaft 86, a connecting plate 87, and an extrusion wheel 88. The drive motor 81 has a mounting on its back and its top end passes through the fixed housing 82 and is connected to the rotating shaft 86. The fixed housing 82 and the drive shaft at the bottom and top of the drive motor 81 are coaxially connected. The connecting plates 87 are distributed at equal angles on the outside of the rotating shaft 86, and the extrusion wheel 88 is axially connected to the top of the connecting plate 87.

[0056] The fixed housing 82 has a connecting hose 85 inside, and the top ends of the connecting hose 85 on both sides are respectively located inside the first housing 83 and the second housing 84. The connecting hose 85 in the middle is arc-shaped and its arc size corresponds to the size of the compression rollers 88 distributed at equal angles. The first housing 83 and the second housing 84 are connected to the fixed housing 82. The top end of the connecting hose 85 inside the first housing 83 is connected to the drain hole 763, and the top end of the connecting hose 85 inside the second housing 84 is connected to the drain pipe 2.

[0057] Specifically, the water flow exits through the drain hole 763 and travels through the connecting hose 85 inside the first housing 83 to the interior of the fixed housing 82. Then, it reaches the connecting hose 85 inside the second housing 84, and finally, the interior of the drain pipe 2. When the water flow is inside the connecting hose 85, if the water flow sensor 321 or signal feedback device 765 on the drain unit 3 detects the water flow, it can control the start of the drive motor 81, causing it to rotate the rotating shaft 86 at its top. When the rotating shaft 86 rotates, it causes the connecting plate 87 and the pressing wheel 88 at its top to press against each other. As the pressing wheel 88 rotates, its top presses against the connecting hose 85, causing a change in pressure inside the connecting hose 85, thus quickly drawing the water into the drain pipe 2.

[0058] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A fine mist zone control valve box for automatic drainage, characterized in that, The system includes a valve box body (1), which has a hollow internal structure to provide space for the installation of the control system. The control system includes a zone valve box controller (4), an intermediate pipeline (5), an inlet / outlet water unit (6), and a control unit (7). The zone valve box controller (4) controls the control unit (7). The control unit (7) is installed outside the intermediate pipeline (5). The bottom of the intermediate pipeline (5) is connected to the inlet / outlet water unit (6) for water flow. The control unit (7) includes a pipe clamp (71), a high-pressure ball valve (72), a pressure switch (73), a control ball valve (74), a pressure gauge (75), and a pneumatic automatic switching valve assembly (77). The clamp (71) is used to fix the position of the intermediate pipeline (5). A high-pressure ball valve (72), a pressure switch (73), a control ball valve (74), a pressure gauge (75) and a pneumatic automatic switching valve assembly (77) are arranged in sequence on the outside of the intermediate pipeline (5) to control the water flow. A high and low pressure automatic drainage assembly (76) is also arranged on the outlet pipe network of the automatic switching valve assembly (77). The outer side of the high and low pressure automatic drainage assembly (76) and the drain pipe (2) are interconnected to discharge the leakage water generated by the pneumatic automatic switching valve assembly (77). The perforation of the drain pipe (2) through the surface of the valve box body (1) is set on the outside of the valve box body (1). The high and low pressure automatic drainage assembly (76) is also provided with a flow guiding unit (8) on the outside, which is connected to the drainage pipe (2). The area valve box controller (4) and the flow guiding unit (8) are both provided with mounting plates on the inside, which are disassembled and installed on the inner wall of the box (11). The water inlet and outlet unit (6) includes a water outlet pipe (61) and a water inlet pipe (62). The water outlet pipe (61) and the water inlet pipe (62) are respectively connected to the output end and the input end of the intermediate pipeline (5), and the intermediate pipeline (5) is connected to the output end and the input end of the intermediate pipeline (5). The bottom of the output and input ends of the pipeline (5) are both through the outside of the box (11) and the fire-fighting pipeline in the outside. The outlet pipe (61) is set below the high-pressure ball valve (72), and the inlet pipe (62) is set towards the pneumatic automatic switch valve assembly (77). The intermediate pipeline (5) is one of the following: U-shaped, straight, L-shaped, combination of U-shaped and straight, combination of straight and L-shaped, combination of U-shaped and L-shaped, or combination of U-shaped, straight and L-shaped. The high and low pressure automatic drainage assembly (76) is one of the drainage assemblies consisting of an automatic control drainage unit or an automatic drainage valve and a low leakage high sealing valve. The automatic control drainage unit includes a valve cover unit (761), a valve seat unit (762), and a drain hole (763). The lower part of the valve cover unit (761) is threadedly connected to the valve seat unit (762), and a drain hole (763) is provided at the top of the valve cover unit (761) for the discharge of low pressure water. The high and low pressure automatic drainage assembly (76) also includes a valve plate unit (764) and a signal feedback device (765). The valve plate unit (764) is disposed outside the valve cover unit (761), and its top end is connected to the signal feedback device (765). The valve cover unit (761) includes a valve cover body (7611), a movable valve core (7612), a first O-ring seal (7613), a spring assembly (7614), an intermediate groove (7615), and a through hole (7616). The valve cover body (7611) has a convex cross-section, and an intermediate groove (7615) penetrating its bottom is provided in the middle of the valve cover body (7611). The movable valve core (7612) is provided inside the intermediate groove (7615). A first O-ring (7613) is provided in the middle, and a cylindrical groove is provided at its bottom. The cylindrical groove is provided with a through hole (7616) that penetrates through the middle groove (7615). A spring assembly (7614) is provided at the top of the movable valve core (7612) and is connected to the top of the inner wall of the middle groove (7615). The top part of the middle groove (7615) penetrates through the drain hole (763). The pneumatic automatic switching valve assembly (77) can be any one of an electric ball valve, an electric shut-off valve, or a solenoid valve. The valve plate unit (764) includes a valve plate body (7641), a through pipe (7642), and a detection probe (7643). The outer side of the valve plate body (7641) is connected to the outer side of the valve cover unit (761). Inside the valve plate body (7641), a through pipe (7642) is provided, which corresponds to the drain hole (763). A detection probe (7643) is provided in the middle of the through pipe (7642). The detection probe (7643) is electrically connected to the signal feedback device (765).

2. The automatic drainage fine mist zone control valve box as described in claim 1, characterized in that: The valve box body (1) includes a box body (11), a box cover (12) and a box top (13). The box body (11) is provided with a hinged box cover (12) on the outside, and a box top (13) with an inclined end face is installed on the top of the box body (11). The back of the box body (11) is provided with an installation plate that connects to the external wall. The bottom of the drain pipe (2) is connected to the drainage unit (3) for monitoring the drainage of the fine mist zone control valve boxes that are set at equal intervals. The drainage unit (3) includes a main drain pipe (31) and a connecting pipe (32). The main drain pipe (31) is threadedly connected to the drain pipe (2). A connecting pipe (32) is installed in the middle thread of the main drain pipe (31) and penetrates it. A water flow sensor (321) is provided at the top of the connecting pipe (32) for monitoring the water flow.

3. The automatic drainage fine mist zone control valve box as described in claim 2, characterized in that: The valve seat unit (762) includes a valve seat body (7621), an installation tube (7622), a second O-ring seal (7623), and a locking cavity (7624). The valve seat body (7621) has a concave half-section structure, and its concave structure is connected to the convex structure of the valve cover body (7611) by threads. An installation tube (7622) is integrally provided at the bottom of the valve seat body (7621). The top end of the installation tube (7622) is used to connect and pass through the intermediate pipeline (5). A cylindrical water inlet channel is provided in the middle of the installation tube (7622), and the cross-sectional dimensions of the water inlet channel are the same as the cross-sectional dimensions of the cylindrical groove at the bottom of the movable valve core (7612). The cylindrical groove corresponds to the position of the water inlet channel. A second O-ring seal (7623) is provided at the bottom of the installation tube (7622) for sealing.

4. The automatic drainage fine mist zone control valve box as described in claim 3, characterized in that: The flow guiding unit (8) includes a drive motor (81), a fixed housing (82), a first housing (83), a second housing (84), a connecting hose (85), a rotating shaft (86), a connecting plate (87), and an extrusion wheel (88). The drive motor (81) has a mounting on its back and its top end passes through the fixed housing (82) and is connected to the rotating shaft (86). The fixed housing (82) and the drive shaft at the bottom and top of the drive motor (81) are coaxially connected. The rotating shaft (86) has connecting plates (87) distributed at equal angles on its exterior. An extrusion wheel (88) with a shaft connection is provided at the top end of the connecting plate (87).

5. The automatic drainage fine mist zone control valve box as described in claim 4, characterized in that: The fixed housing (82) is fitted with a connecting hose (85), and the top ends of the connecting hose (85) are respectively located inside the first housing (83) and the second housing (84). The connecting hose (85) in the middle is arc-shaped and its arc size corresponds to the size of the compression rollers (88) distributed at equal angles. The first housing (83) and the second housing (84) are connected to the fixed housing (82). The top end of the connecting hose (85) inside the first housing (83) is connected to the drain hole (763), and the top end of the connecting hose (85) inside the second housing (84) is connected to the drain pipe (2).

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