A resealable container valve

Abstract

The utility model provides a kind of container valve of repeatable switch, including valve body and valve core being arranged in valve body, and the inside of valve body is provided with through inner cavity along horizontal direction, and inner cavity includes outlet cavity, intermediate cavity and drive installation cavity communicated in sequence, outlet cavity is equipped with injection outlet, drive installation cavity is equipped with driver interface, and the inside of valve body is equipped with fire extinguishing agent inlet, and valve body and fire extinguishing agent inlet are opened with the pressure detection hole being communicated with inner cavity, and pressure detection hole is detachably connected with connecting assembly, and valve body is also equipped with pressure relief interface being communicated with inner cavity;Valve core is contained in inner cavity, and one end of valve core is equipped with the obturator head capable of opening and blocking outlet cavity, and the other end is equipped with drive part, and the outside of driver interface is equipped with the limit nut blocking drive part, and one end of drive part is equipped with drive head passing through limit nut.The utility model drives the drive part of valve core by controlling external driver, and the multiple, on-demand injection of fire extinguishing agent is realized;It reduces use cost and environmental burden.

Description

Technical Field

[0001] This utility model relates to the field of container valve technology, specifically to a container valve that can be repeatedly switched on and off. Background Technology

[0002] Currently, traditional container valves widely used in prefabricated pressurized fire extinguishing systems are designed for single-use opening, requiring the entire stored extinguishing agent to be released before the system can be terminated. This "full release" approach leads to problems such as excessive extinguishing agent discharge, resource waste, increased environmental burden, and the need for complete replacement of the system to handle reignition in localized or small-scale fires, severely limiting the accuracy and economy of firefighting operations. Therefore, a new type of container valve capable of repeated opening and closing and supporting multiple bursts of fire suppression is needed to improve fire extinguishing efficiency and reduce operating costs. Utility Model Content

[0003] To address the technical problems existing in the background art, the present invention provides a container valve that can be repeatedly switched on and off.

[0004] The technical solution of this utility model is as follows: A reusable container valve includes a valve body and a valve core disposed within the valve body. The valve body has a through-cavity in the horizontal direction, and the through-cavity includes an outlet cavity, an intermediate cavity, and a drive mounting cavity connected in sequence. The outlet cavity has a spray outlet, and the drive mounting cavity has a driver interface. The valve body has a fire extinguishing agent inlet that communicates with the through-cavity and extends downward. A pressure detection hole that communicates with the through-cavity is opened at one end of the valve body opposite to the fire extinguishing agent inlet. A connecting component is detachably connected to the pressure detection hole. The valve body also has a pressure relief port that communicates with the through-cavity. The valve core is housed in the inner cavity. One end of the valve core is provided with a sealing head that can open and close the oral cavity, and the other end is provided with a driving part. The driving part slides and seals with the inner wall of the driving mounting cavity. The driving part is elastically connected to the driving mounting cavity through a reset spring sleeved on it. A limit nut that blocks the driving part is provided on the outside of the driver interface. One end of the driving part is provided with a driving head that passes through the limit nut.

[0005] The structure of the outlet cavity is as follows: the outlet cavity includes a sealing section located in the middle. The inner diameter of the sealing section is smaller than the inner diameters at both ends of the outlet cavity. The sealing head is adapted to the sealing section, and at least one first dynamic sealing ring is fitted on the sealing head. The first dynamic sealing ring plays a sealing role and is used to seal the outlet cavity and the intermediate cavity when the sealing head seals the outlet cavity. When the sealing head opens the outlet cavity, it does not affect the communication between the outlet cavity, the intermediate cavity and the extinguishing agent inlet, and does not affect the spraying of the extinguishing agent.

[0006] Preferably, at least one second dynamic sealing ring is fitted on the drive unit. The second dynamic sealing ring plays a sealing role and is used to seal the intermediate cavity and drive mounting cavity when the sealing head is opened or the outlet cavity is blocked.

[0007] Furthermore, the inner diameter of the sealing section is smaller than the inner diameter of the drive mounting cavity.

[0008] Preferably, a pressure detection mounting port is provided at the end of the valve body opposite to the extinguishing agent inlet, and the pressure detection mounting port is connected to and coaxially arranged with the pressure detection hole.

[0009] The pressure detection mounting port has the following structure: it is a circular hole with a decreasing inner diameter at the bottom, and the minimum inner diameter of the pressure detection mounting port is greater than the inner diameter of the pressure detection hole.

[0010] The connection assembly is structured as follows: the connection assembly includes a plug that is adapted to the pressure detection mounting port. The plug can move along the axial direction of the pressure detection mounting port. The lower part of the plug can block the lower part of the pressure detection mounting port. The plug is pressed into the pressure detection mounting port by a switch nut that is detachably connected to the valve body. The upper part of the plug passes through the switch nut and protrudes outside the valve body. A blind hole with an opening at the top is opened inside the plug. The lower part of the blind hole communicates with the pressure detection mounting port through a connecting hole. The lower end face of the blind hole is higher than the lower end face of the plug.

[0011] To facilitate the downward pressure of the sealing component when the switch nut is tightened, thereby sealing the lower part of the pressure detection mounting port and the pressure detection hole, the sealing component is a shaft structure. The upper part of the sealing component has a shoulder located outside the pressure detection mounting port, and the shoulder is located inside the switch nut.

[0012] Furthermore, at least one third dynamic sealing ring is fitted between the shoulder and the connecting hole of the sealing member. The third dynamic sealing ring is used to seal the upper part of the pressure detection mounting port when the sealing head is sealing or the pressure detection port is opened, so as to prevent internal gas from leaking between the pressure detection mounting port and the outer wall of the sealing member.

[0013] The pressure relief port is located at the front of the valve body, and a pressure relief valve is connected to it.

[0014] The beneficial effects of this utility model are as follows: By controlling the external actuator to drive the valve core, the extinguishing agent can be sprayed multiple times on demand. This not only saves extinguishing agent resources and reduces usage costs and environmental burden, but also enables a single device to cope with reignition fires.

[0015] The valve core is equipped with a sealing head and a drive unit at both ends, which are normally closed by a return spring fitted on them. The structure is compact and responds quickly. The special sealing section structure in the middle of the outlet mouth works in conjunction with the first dynamic sealing ring on the sealing head to ensure reliable sealing of the spray outlet when the valve core is closed, while forming a smooth extinguishing agent channel when open, achieving efficient spraying. Attached Figure Description

[0016] In the attached diagram: Figure 1 This is a schematic diagram showing the closed state of the container valve. Figure 2 A schematic diagram showing the container valve in the open state; Figure 3 This is a partial sectional view; Figure 4 This is a top view; The components represented by the various reference numerals in the diagram are: 1. Valve body; 101. Outlet cavity; 1011. Sealing section; 1012. Spray outlet; 102. Intermediate cavity; 103. Drive mounting cavity; 1031. Driver interface; 104. Extinguishing agent inlet; 105. Pressure detection hole; 106. Pressure relief port; 107. Pressure detection mounting port; 2. Valve core; 3. Sealing head; 4. Drive unit; 401. Drive head; 5. Return spring; 6. Limit nut; 7. First dynamic seal ring; 8. Second dynamic seal ring; 9. Third dynamic seal ring; 10. Connecting assembly; 1001. Sealing component; 10011. Blind hole; 10012. Connecting hole; 1002. Switch nut; 1003. Shoulder; 11. Pressure relief valve; 1101. Release plate; 1102. Pressure ring; 1103. Tightening nut. Detailed Implementation

[0017] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a reusable container valve includes a valve body 1 and a valve core 2 disposed within the valve body 1. The valve body 1 has a horizontally penetrating inner cavity, which includes a sequentially connected outlet cavity 101, an intermediate cavity 102, and a drive mounting cavity 103. The outlet cavity 101 has a spray outlet 1012, and the drive mounting cavity 103 has a driver interface 1031. The valve body 1 has a fire extinguishing agent inlet 104 that communicates with the inner cavity and penetrates downwards. A pressure detection port 105 communicating with the inner cavity is opened at the end of the valve body 1 opposite to the fire extinguishing agent inlet 104. A connecting assembly 10 is detachably connected to the pressure detection port 105. The valve body 1 also has a pressure relief port 106 communicating with the inner cavity. The pressure relief port 106 is located at the front of the valve body 1 and is connected to a pressure relief valve 11. The fire extinguishing agent inlet 104 can be connected to a pressurized steel cylinder containing fire extinguishing agent.

[0018] The valve core 2 is housed in the inner cavity. One end of the valve core 2 is provided with a sealing head 3 that can open and block the oral cavity 101, and the other end is provided with a driving part 4. The driving part 4 is slidably sealed with the inner wall of the driving mounting cavity 103. The position of the valve core 2 is adjustable along the length of the inner cavity, and the driving part 4 is elastically connected to the driving mounting cavity 103 through a return spring 5 sleeved on it. The outer side of the driver interface 1031 is provided with a limiting nut 6 that blocks the driving part 4. The limiting nut 6 is threadedly connected to the valve body 1. One end of the limiting nut 6 is provided with a first through hole along its axial direction. One end of the driving part 4 is provided with a driving head 401 that passes through the first through hole. The driving head 401 is slidably connected with the first through hole. The driving head 401 is pushed inward under the drive of an external electromagnetic driver to open the spray outlet 1012. When the electromagnetic driver retracts, the driving head 401 is reset under the action of the return spring 5, so that the sealing head 3 re-blocks the sealing section 1011 of the oral cavity 101.

[0019] The outlet cavity 101 has a sealing section 1011 in the middle with an inner diameter smaller than that at both ends. The inner diameter of the sealing section 1011 is smaller than that of the drive mounting cavity 103. The sealing head 3 is adapted to the sealing section 1011, and a first dynamic sealing ring 7 is fitted on the sealing head 3. The first dynamic sealing ring 7 plays a sealing role and is used to seal the outlet cavity 101 and the intermediate cavity 102 when the sealing head 3 seals the outlet cavity 101. When the sealing head 3 opens the outlet cavity 101, it does not affect the communication between the outlet cavity 101, the intermediate cavity 102 and the extinguishing agent inlet 104, and does not affect the discharge of the extinguishing agent.

[0020] A second dynamic sealing ring 8 is fitted onto the drive unit 4. The second dynamic sealing ring 8 serves a sealing function, ensuring a seal between the intermediate cavity 102 and the drive mounting cavity 103 when the sealing head 3 opens or blocks the outlet cavity 101. The second dynamic sealing ring 8 on the drive unit 4 effectively isolates the intermediate cavity 102 from the drive mounting cavity 103 throughout the entire stroke of the valve core 2, separating the intermediate cavity 102 (the working cavity) from the drive mounting cavity 103 (the driving space). This not only protects the external actuator from corrosion and contamination by extinguishing agents but also ensures smooth movement of the drive unit 4 and reliable operation of the return spring 5, thereby improving the valve's service life and operational stability.

[0021] A pressure detection mounting port 107 is provided at the end of the valve body 1 opposite to the extinguishing agent inlet 104. The pressure detection mounting port 107 is connected to and coaxially arranged with the pressure detection hole 105. The pressure detection mounting port 107 is a circular hole with a decreasing inner diameter at the bottom. The minimum inner diameter of the pressure detection mounting port 107 is larger than the inner diameter of the pressure detection hole 105.

[0022] The connecting assembly 10 includes a plug 1001 adapted to the pressure detection mounting port 107. The plug 1001 is movable along the axial direction of the pressure detection mounting port 107. The lower part of the plug 1001 can block the lower part of the pressure detection mounting port 107. The plug 1001 is pressed into the pressure detection mounting port 107 by a switch nut 1002 that is detachably connected to the valve body 1. A through hole is provided in the middle of the upper part of the switch nut 1002. The upper part of the plug 1001 passes through the through hole of the switch nut 1002 and protrudes to the outside of the valve body 1. A blind hole 10011 with an open top is provided inside the plug 1001. The lower part of the blind hole 10011 communicates with the pressure detection mounting port 107 through a connecting hole 10012. The lower end face of the blind hole 10011 is higher than the lower end face of the plug 1001. One end of the upper part of the plug 1001 protruding from the valve body 1 is used for connection with an external digital pressure transmitter.

[0023] Digital pressure transmitters are a current technology. As a pressure detection device, digital pressure transmitters can convert the internal pressure signal of the storage cylinder into a digital signal in real time and accurately and transmit it to the control host. This allows the system to accurately display the internal pressure of the storage cylinder and indirectly calculate the remaining amount of perfluorohexanone, thus providing reliable data support for judging the remaining number of sprays. This realizes digital monitoring and intelligent management of the status of the fire extinguishing device, and provides great convenience for maintenance and decision-making.

[0024] To facilitate the downward pressure of the sealing member 1001 when the switch nut 1002 is tightened, thereby sealing the lower part of the pressure detection mounting port 107 and the pressure detection hole 105, the sealing member 1001 has a shaft structure. The upper part of the sealing member 1001 is provided with a shoulder 1003 located outside the pressure detection mounting port 107. The shoulder 1003 is located inside the switch nut 1002. When the switch nut 1002 is tightened, the switch nut 1002 rotates and moves downward, which can press it tightly.

[0025] The sealing member 1001 is fitted with two third dynamic sealing rings 9 between the shoulder 1003 and the connecting hole 10012. The third dynamic sealing rings 9 are used to seal the upper part of the pressure detection mounting port 107 when the sealing head 3 is sealed or the pressure detection port 105 is opened, so as to prevent internal gas from leaking between the pressure detection mounting port 107 and the outer wall of the sealing member 1001.

[0026] The connecting assembly 10 adopts a split design. The sealing component 1001 with a shoulder 1003 is pressed together by the switch nut 1002, and a dynamic seal is achieved using the sleeved third dynamic sealing ring 9. This structure allows the installation, disassembly, and calibration of the pressure detection instrument to be performed online without emptying the extinguishing agent from the container, making operation simple and safe. The blind hole 10011 and connecting hole 10012 inside the sealing component 1001 ensure accurate pressure transmission while effectively preventing internal media from contaminating and corroding the upper connecting threads. This ensures the sealing performance and connection reliability of the pressure detection interface under long-term use, greatly facilitating the daily maintenance and status monitoring of the fire extinguishing device.

[0027] The pressure relief valve 11 includes a release plate 1101, a pressure ring 1102, and a clamping nut 1103 arranged sequentially. The release plate 1101 is located near the pressure relief port 106, and the clamping nut 1103 is detachably connected to the pressure relief port 106. When the storage cylinder is pressurized or the internal pressure becomes too high for some reason, the internal pressure will rupture the release plate 1101 of the container valve, releasing the internal pressure through the pressure relief valve 11, thus protecting the device.

[0028] Container valve closed status: Under normal use conditions, such as Figure 1 As shown, there is a certain pressure at the inlet of valve body 1. This pressure acts on surfaces A and B of valve core 2. Since the area of ​​surface B is larger than that of surface A, the pressure to the right is greater than the pressure to the left, and the resistance of the return spring 5 is also greater. At the same time, due to the limiting effect of nut 4, valve core 2 is in the following position. Figure 1 At this position, due to the sealing effect of the first dynamic sealing ring 7 and the second dynamic sealing ring 8, the internal gas will not leak, and the valve is in the closed state.

[0029] Valve opening process: like Figure 2 As shown, when the valve core 2 of the container valve is driven by the electromagnetic actuator on the right, the driving force is greater than the pressure difference between surfaces A and B plus the elastic force of the return spring 5. Therefore, the valve core 2 will move to the left, the return spring 5 will be further compressed, the first dynamic seal ring 7 will no longer function, and an annular space will be generated between the valve core 2 and the valve body 1, as shown. Figure 3 As shown, the valve is now open.

[0030] The process of pressure display: When valve body 1 is connected to an external digital pressure transmitter or pressure gauge, rotating switch nut 1002 counterclockwise by half a turn creates a gap between the sealing element 1001 and the lower part of the pressure detection mounting port 107 due to internal pressure. Since the upper part of the sealing element 1001 is hollow and the lower part has a small hole, gas will pass through the gap and the small hole, acting on the digital pressure transmitter or pressure gauge, which will then display the internal pressure value. Conversely, rotating it counterclockwise will shut off the pressure display.

[0031] Safe release process: like Figure 3 As shown, the release diaphragm is very thin and can only withstand a limited amount of pressure. When the pressure inside the valve body 1 exceeds the maximum pressure that the release diaphragm 7 can withstand, the release diaphragm will rupture, and the internal pressure will be safely released.

Claims

1. A container valve that can be repeatedly switched on and off, characterized in that, The valve body (1) includes a valve body (1) and a valve core (2) disposed inside the valve body (1). The valve body (1) has a through cavity in the horizontal direction. The cavity includes an outlet cavity (101), an intermediate cavity (102) and a drive mounting cavity (103) connected in sequence. The outlet cavity (101) is provided with a spray outlet (1012). The drive mounting cavity (103) is provided with a driver interface (1031). The valve body (1) has a fire extinguishing agent inlet (104) that communicates with the cavity and penetrates downward. The valve body (1) has a pressure detection hole (105) that communicates with the cavity. A connecting component (10) is detachably connected to the pressure detection hole (105). The valve body (1) also has a pressure relief port (106) that communicates with the cavity. The valve core (2) has a sealing head (3) at one end that can open and close the oral cavity (101), and a driving part (4) at the other end. The driving part (4) slides and seals with the inner wall of the driving mounting cavity (103). The driving part (4) is elastically connected to the driving mounting cavity (103) through a reset spring (5) sleeved on it. A limiting nut (6) that blocks the driving part (4) is provided on the outside of the driver interface (1031). A driving head (401) that passes through the limiting nut (6) is provided at one end of the driving part (4).

2. The reusable container valve according to claim 1, characterized in that, The outlet cavity (101) includes a blocking section (1011) located in the middle. The inner diameter of the blocking section (1011) is smaller than the inner diameters at both ends of the outlet cavity (101). The blocking head (3) is adapted to the blocking section (1011), and at least one first dynamic sealing ring (7) is sleeved on the blocking head (3).

3. The reusable container valve according to claim 1, characterized in that, At least one second dynamic sealing ring (8) is fitted on the drive unit (4).

4. A reusable container valve according to claim 2, characterized in that, The inner diameter of the sealing section (1011) is smaller than the inner diameter of the drive mounting cavity (103).

5. A reusable container valve according to claim 1, characterized in that, The valve body (1) is provided with a pressure detection installation port (107) at one end opposite to the fire extinguishing agent inlet (104). The pressure detection installation port (107) is connected to and coaxially arranged with the pressure detection hole (105).

6. A reusable container valve according to claim 5, characterized in that, The pressure detection mounting port (107) is a circular hole with a decreasing inner diameter at the bottom. The minimum inner diameter of the pressure detection mounting port (107) is greater than the inner diameter of the pressure detection hole (105).

7. A reusable container valve according to claim 1, characterized in that, The connecting assembly (10) includes a plug (1001) adapted to the pressure detection mounting port (107). The plug (1001) can move along the axial direction of the pressure detection mounting port (107). The lower part of the plug (1001) can block the lower part of the pressure detection mounting port (107). The plug (1001) is pressed into the pressure detection mounting port (107) by a switch nut (1002) that is detachably connected to the valve body (1). The upper part of the plug (1001) passes through the switch nut (1002) and protrudes outside the valve body (1). A blind hole (10011) with an open top is provided inside the plug (10011). The lower part of the blind hole (10011) is connected to the pressure detection mounting port (107) through a connecting hole (10012). The lower end face of the blind hole (10011) is higher than the lower end face of the plug (1001).

8. A reusable container valve according to claim 7, characterized in that, The sealing component (1001) is a shaft structure. The upper part of the sealing component (1001) is provided with a shoulder (1003) located outside the pressure detection installation port (107). The shoulder (1003) is located inside the switch nut (1002).

9. A reusable container valve according to claim 8, characterized in that, The sealing element (1001) is fitted with at least one third dynamic sealing ring (9) between the shoulder (1003) and the connecting hole (10012).

10. A reusable container valve according to claim 8, characterized in that, The pressure relief port (106) is located in front of the valve body (1), and a pressure relief valve (11) is connected to it.

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