Container valve capable of being opened repeatedly

Abstract

The utility model relates to a container valve capable of being opened repeatedly, and relates to the technical field of valves. The valve comprises a valve body, the valve body is provided with an inlet, an outlet and a sliding way, the inlet and the outlet are communicated through the sliding way, the valve body is provided with a valve element in the sliding way in a sliding mode, and the valve element moves to control connection and disconnection between the inlet and the outlet. The end face, deviating from the inlet and the outlet, of the valve element and the inner wall of the sliding way form a pressure cavity. The valve body is provided with a pressure supplementing channel and a pressure relief channel which are communicated with the pressure cavity, the pressure supplementing channel is used for being communicated with the inlet and supplementing pressure through air pressure in the steel cylinder, the pressure relief channel is used for being communicated with the outside of the valve body so that pressure relief can be conducted on the pressure cavity, and a control device is arranged in the pressure cavity and used for controlling the pressure cavity to be communicated with the pressure supplementing channel or the pressure relief channel. Repeated opening of the container valve can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of valve technology, in particular to a container valve capable of repeated opening. BACKGROUND

[0002] In high-pressure gas storage and transmission systems, container valves play a crucial role, and their performance and reliability are core elements in measuring the safety and operational efficiency of gas management systems. The design of traditional container valves is usually limited to a one-time use mode. This inherent design characteristic is not flexible enough when faced with complex and variable actual application scenarios, thereby restricting the convenience of system operation and the overall function. In particular in the field of fire fighting, electrically controlled container valves are favored due to their remote control capability. However, such valves lose the function of closing again after the first opening, resulting in the complete release of fire extinguishing agent in the cylinder at one time. In the face of the possible rekindling of fire scenes, this one-time use design cannot provide continuous and effective fire extinguishing support, making it difficult to control the rekindling fire points in time.

[0003] In addition, the container valve of one-time discharge has a fixed discharge amount of fire extinguishing agent. The operator cannot adjust the discharge amount of fire extinguishing agent, so as to accurately control the release amount of fire extinguishing agent according to the actual size of the fire, which not only causes the overuse and waste of fire extinguishing agent when the fire source is small, but also, after the fire extinguishing agent tank is completely emptied, if the fire source rekindles again in a short time, the system will face potential safety hazards due to the lack of timely fire extinguishing capability. Therefore, the development of a new type of container valve capable of repeated opening is of great significance to improve the flexibility and overall fire extinguishing efficiency of the fire fighting system. CONTENT OF THE INVENTION

[0004] In order to realize the repeated opening of the container valve, the present application provides a container valve capable of repeated opening.

[0005] The container valve capable of repeated opening provided by the present application adopts the following technical scheme:

[0006] A container valve capable of repeated opening, comprising a valve body, an inlet, an outlet and a sliding channel are arranged on the valve body, and the inlet and the outlet are communicated through the sliding channel, a valve core is arranged in the sliding channel and slides with the valve body, and the movement of the valve core can control the on-off between the inlet and the outlet, characterized in that: an elastic member is arranged in the sliding channel of the valve body, the elastic member is used to push the valve core against the inlet to block the inlet and the outlet, and the end face of the valve core away from the inlet and the outlet forms a pressure cavity with the inner wall of the sliding channel.

[0007] The valve body is provided with a pressure supplement channel and a pressure relief channel which are communicated with the pressure cavity, the pressure supplement channel is used for connecting the inlet, and the pressure supplement is realized through the gas pressure in the cylinder, the pressure relief channel is used for connecting the outside of the valve body, so that the pressure cavity can be relieved, and the control device is arranged in the pressure cavity and is used for controlling the pressure cavity to be communicated with the pressure supplement channel or the pressure relief channel.

[0008] By adopting the technical scheme, the control device controls the pressure cavity to be communicated with the pressure supplement channel or the pressure relief channel, the gas pressure in the pressure cavity is controlled, the elastic force of the elastic member is supplemented, the valve core is controlled to move, the inlet and the outlet are controlled to be connected or disconnected, and the effect that the container valve is repeatedly opened is realized.

[0009] Optionally, the control device comprises a valve core arranged in the pressure supplement channel, a switch is arranged on the valve core, the valve core can be controlled to be connected or disconnected, a push assembly is arranged on the valve body, the push assembly is used for controlling the pressure relief channel to be connected or disconnected, and the switch of the valve core can be pressed or released.

[0010] By adopting the technical scheme, the push assembly is used for controlling the pressure relief channel to be connected or disconnected, the switch of the valve core can be pressed or released, the pressure supplement channel is controlled to be connected or disconnected, the pressure cavity is controlled to be communicated with the pressure supplement channel or the pressure relief channel, the gas pressure in the pressure cavity is controlled, the elastic force of the elastic member is supplemented, the valve core is controlled to move, the inlet and the outlet are controlled to be connected or disconnected, and the effect that the container valve is repeatedly opened is realized.

[0011] Optionally, the push assembly comprises an electromagnet arranged on the valve body, a moving part of the electromagnet is partially inserted into the valve body, and the switch of the valve core can be pressed.

[0012] The pressure relief channel is arranged on the shell of the electromagnet and is communicated with the pressure cavity, and the moving part of the electromagnet is moved to control the pressure relief channel to be connected or disconnected.

[0013] By adopting the technical scheme, the electromagnet is turned on or turned off, the corresponding moving part is driven to be extended or retracted, the pressure cavity is controlled to be communicated with the pressure supplement channel or the pressure relief channel, the gas pressure in the pressure cavity is controlled, the elastic force of the elastic member is supplemented, the valve core is controlled to move, the inlet and the outlet are controlled to be connected or disconnected, and the effect that the container valve is repeatedly opened is realized.

[0014] Optionally, the valve core comprises a sliding block which is slidably arranged in the sliding channel, a blocking block for blocking the inlet and the outlet is arranged on the sliding block, and the acting area of the pressure in the pressure cavity on the sliding block is greater than the acting area of the gas pressure in the inlet on the blocking block.

[0015] By adopting the technical scheme, in the case that the pressure in the pressure cavity is the same as the inlet pressure, the pushing force of the pressure in the pressure cavity on the sliding block is greater than the pushing force of the pressure in the inlet on the blocking block, so as to push the sliding block and the blocking block to move to overcome the elastic force of the elastic member, to connect the inlet and the outlet, and to control the opening of the container valve.

[0016] Optionally, in the compressed state of the pressure cavity, the valve core is driven to move and cut off the inlet and the outlet; and in the expanded state of the pressure cavity, the valve core is driven to move and connect the inlet and the outlet.

[0017] By adopting the technical scheme, in the initial state, the container valve is in a sealed state, and the electromagnet is in a power-off state; in this state, the control device is used to control the pressure cavity to be connected to the pressure relief channel and the pressure compensation channel to be sealed, the pressure in the inlet is greater than the pressure in the pressure cavity and the elastic force of the elastic member, and the valve core remains in a state of cutting off the inlet and the outlet under the elastic force of the elastic member.

[0018] When it is needed to open the container valve, the electromagnet is powered on, the moving part of the electromagnet is extended, and the switch of the valve core is pressed to open the pressure compensation channel; at the same time, the extension of the moving part of the electromagnet also gradually seals the pressure relief channel, so that the pressure in the pressure cavity is the same as the pressure in the inlet of the valve body. Since the acting area of the pressure in the pressure cavity on the sliding block is greater than the acting area of the pressure in the inlet on the blocking block, the pushing force of the pressure in the pressure cavity on the sliding block is greater than the pushing force of the pressure in the inlet on the blocking block, so as to push the sliding block and the blocking block to move to overcome the elastic force of the elastic member, to remove the cutting-off effect of the blocking block on the inlet and the outlet, and to control the opening of the container valve.

[0019] When it is needed to close repeatedly, the operator needs to control the pressure cavity to be connected to the pressure relief channel and the pressure compensation channel to be sealed through the control device again, so that the pressure in the pressure cavity drops rapidly, the spring sliding block moves under the elastic force of the elastic member, and the blocking block moves again to cut off the inlet and the outlet, thereby realizing the sealing of the container valve.

[0020] By controlling the power-on and power-off of the electromagnet, the pressure in the pressure cavity is controlled, and the elastic force of the elastic member is supplemented to control the movement of the blocking block and the connection and disconnection between the inlet and the outlet.

[0021] In summary, the present application has at least one of the following beneficial technical effects: the power-on and power-off of the electromagnet drives the corresponding moving part to extend and retract, thereby controlling the pressure cavity to be connected to the pressure compensation channel or the pressure relief channel, controlling the pressure in the pressure cavity, and supplementing the elastic force of the elastic member to control the movement of the valve core and the connection and disconnection between the inlet and the outlet, thereby realizing the repeated opening of the container valve and improving the flexibility of the fire-fighting system and the overall fire-fighting efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application.

[0023] Figure 2 This is a cross-sectional view used in the embodiments of this application to illustrate import and export.

[0024] Figure 3 yes Figure 2 A magnified view of a portion of the image.

[0025] Explanation of reference numerals in the attached drawings: 1. Valve body; 11. Inlet; 12. Outlet; 13. Slide rail; 14. Valve core; 15. Block; 16. Slider; 2. Elastic element; 21. Pressure chamber; 22. Pressure replenishment channel; 23. Pressure relief channel; 3. Valve core; 4. Pushing assembly; 41. Electromagnet. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0027] This application discloses a re-openable container valve. For example... Figure 1 , Figure 2 as well as Figure 3 The reusable container valve includes a valve body 1, which has an inlet 11, an outlet 12, and a slide rail 13. The inlet 11 and outlet 12 are connected via the slide rail 13. A slidable valve core 14 is disposed within the slide rail 13, and the movement of the valve core 14 controls the opening and closing of the inlet 11 and outlet 12. The valve core 14 includes a slider 16 slidably disposed within the slide rail 13. A blocking block 15 is connected to the side of the slider 16 facing the inlet 12 via a connecting rod. The blocking block 15 extends towards the inlet 11 and controls the opening and closing of the inlet 11 and outlet 12.

[0028] To achieve the automatic reset function of the valve core 14, an elastic element 2 is provided inside the slide rail 13. The elastic element 2 can be a spring, elastic sheet, or disc spring, etc. In this embodiment, the elastic element 2 is a spring. The spring is disposed inside the slide rail 13, with one end abutting against one end of the slide rail 13 and the other end abutting against the slider 16. The spring pushes the slider 16, causing the plug 15 to press against the inlet 11, thereby cutting off the connection between the inlet 11 and the outlet 12. At the same time, a pressure chamber 21 is formed between the end face of the slider 16 away from the inlet 11 and the outlet 12 and the inner wall of the slide rail 13.

[0029] When the pressure chamber 21 is in the expanded state, it will move the valve core 14 to connect the inlet 11 and the outlet 12. When the pressure chamber 21 is in the compressed state, it will move the valve core 14 to disconnect the inlet 11 and the outlet 12.

[0030] In this embodiment, the spring is located on the side of the slider 16 facing the inlet 11, and the spring is always in a compressed state. Under the action of the spring's elastic force, the slider 16 tends to move away from the inlet 11. The valve body 1 is provided with a limiting step inside the inlet 11. The plug 15 extends into the inlet 11 and passes through the limiting step. The plug 15 is located on the side of the limiting step facing the inlet 11 and can prevent the plug 15 from disengaging from the inlet 11 of the valve body 1. The spring pushes the slider 16, and under the linkage of the connecting rod, the slider 16 drives the plug 15 to press against the limiting step, thereby achieving the sealing effect of the plug 15 on the inlet 11. When the slider 16 overcomes the elastic force of the spring, the plug 15 moves towards the inlet 11 and gradually moves away from the limiting step. In this state, the plug 15 releases the sealing effect on the inlet 11, so that the inlet 11 and the outlet 12 gradually connect, achieving the opening effect of the valve body 1.

[0031] To control the gas pressure within the pressure chamber 21, the valve body 1 is provided with a pressure-replenishing channel 22 and a pressure-relief channel 23, both communicating with the pressure chamber 21. The pressure-replenishing channel 22 connects to the inlet 11, allowing the gas pressure inside the cylinder to replenish the pressure in the pressure chamber 21. The pressure-relief channel 23 connects to the outside of the valve body 1, allowing pressure relief from the pressure chamber 21. A control device is installed within the pressure chamber 21 to control whether the pressure chamber 21 connects to the pressure-replenishing channel 22 or the pressure-relief channel 23.

[0032] To ensure that the valve core 14 can be moved when the air pressure in pressure chamber 21 and inlet 11 are the same, the area of ​​the air pressure in pressure chamber 21 acting on the slider 16 is greater than the area of ​​the air pressure in inlet 11 acting on the block 15. Thus, under the same air pressure, the thrust of the air pressure in pressure chamber 21 on slider 16 will be greater than the thrust of the air pressure in inlet 11 on block 15. Therefore, when the air pressure in pressure chamber 21 is the same as or slightly lower than that inlet 11, slider 16 and block 15 can overcome the elastic force of elastic element 2 and move, thereby controlling the opening and closing of the container valve.

[0033] The control device may include a valve core 3 disposed within the pressure replenishment channel 22, with a switch on the valve core 3 to control its opening and closing. Simultaneously, the valve body 1 is also equipped with a push assembly 4, used to control the opening and closing of the pressure relief channel 23, and capable of pressing or releasing the switch of the valve core 3.

[0034] In this embodiment, the push assembly 4 includes an electromagnet 41 mounted on the valve body 1. The movable part of the electromagnet 41 can partially extend into the valve body 1 and press the valve core 3 to open or close. A pressure relief channel 23 is provided on the housing of the electromagnet 41 and communicates with the pressure chamber 21. When the movable part of the electromagnet 41 moves, it can control the opening and closing of the pressure relief channel 23.

[0035] When the electromagnet 41 is energized, its moving part extends. At this time, the moving part of the electromagnet 41 seals the pressure relief channel 23 and presses the switch of the valve core 3, so that the pressure replenishment channel 22 is connected. In this state, the pressure replenishment channel 22 is connected to the pressure chamber 21 and the pressure relief channel 23 is closed.

[0036] When the electromagnet 41 is de-energized, its moving part retracts. At this time, the moving part of the electromagnet 41 releases the sealing effect on the pressure relief channel 23 and releases the valve core 3, so that the pressure replenishment channel 22 is closed. In this state, the pressure relief channel 23 is connected to the pressure chamber 21 and the pressure replenishment channel 22 is closed.

[0037] Therefore, the energization and de-energization of electromagnet 41 can control the extension and retraction of its moving part, thereby controlling the pressure chamber 21 to connect to the pressure replenishment channel 22 or the pressure relief channel 23.

[0038] When the container valve is in use, the inlet 11 of the valve body 1 is connected to the opening of the steel cylinder containing the extinguishing agent, and the pressure of the extinguishing agent in the steel cylinder is greater than the external atmospheric pressure.

[0039] Initially, the container valve is in a sealed state. At this time, the electromagnet 41 is de-energized, the pressure relief channel 23 connects to the pressure chamber 21, and closes the pressure replenishment channel 22. In this state, the pressure chamber 21 can be depressurized through the pressure relief channel 23, while the pressure at the inlet 11 of the valve body 1 is the same as the pressure inside the cylinder and much greater than the air pressure inside the pressure chamber. Under the action of the spring force and the air pressure at the inlet 11 of the valve body 1, the slider 16 and the plug 15 remain in a state of isolating the inlet 11 and the outlet 12.

[0040] When the container valve needs to be opened, the operator energizes the electromagnet 41, connecting the pressure replenishment channel 22 to the pressure chamber 21 and closing the pressure relief channel 23. In this state, the air pressure in the pressure chamber 21 is the same as the air pressure at the inlet 11 of the valve body 1. Since the area of ​​the air pressure in the pressure chamber 21 acting on the slider 16 is greater than the area of ​​the air pressure at the inlet 11 acting on the block 15, the thrust of the air pressure in the pressure chamber 21 on the slider 16 is greater than the thrust of the air pressure at the inlet 11 on the block 15. This allows the slider 16 and the block 15 to move against the elastic force of the elastic element. The block 15 gradually moves away from the limit step, releasing the sealing effect on the inlet 11, allowing the inlet 11 to gradually connect with the outlet 12, thereby controlling the opening of the container valve.

[0041] When the container valve needs to be closed repeatedly, the operator de-energizes the electromagnet 41 again, controlling the pressure chamber 21 to connect to the pressure relief channel 23, while the pressure replenishment channel 22 is sealed, causing the air pressure in the pressure chamber 21 to drop rapidly. Under the elastic force of the elastic element 2, the slider 16 and the block 15 move and disconnect the inlet 11 and outlet 12 again, achieving a seal on the container valve.

[0042] In summary, the present invention can control the connection between the pressure chamber 21 and the pressure replenishment channel 22 or the pressure relief channel 23 by controlling the on and off of the electromagnet 41, thereby controlling the air pressure in the pressure chamber 21. With the help of the elastic force of the spring, the movement of the slider 16 and the block 15 can be controlled, thereby realizing the repeated opening and closing of the container valve, which is beneficial to improving the flexibility of the fire protection system and the overall fire extinguishing efficiency.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A resealable container valve characterised in that: The utility model provides a valve body (1) is provided with the import (11), the outlet (12) and the slide (13) on the valve body (1), and the import (11) and the outlet (12) are communicated through the slide (13), the valve core (14) is slidably arranged in the slide (13) of the valve body (1), and the valve core (14) moves and can control the on-off between the import (11) and the outlet (12), characterized by: the valve body (1) is provided with elastic member (2) in the slide (13), the elastic member (2) is used to push the valve core (14) and is tightly closed to the import (11), so as to be able to cut off the import (11) and the outlet (12), the end face of the valve core (14) away from the import (11) and the outlet (12) forms the pressure chamber (21) with the inner wall of the slide (13). The valve body (1) is provided with the pressure compensation passage (22) and the pressure relief passage (23) that communicate with the pressure chamber (21), the pressure compensation passage (22) is used for connecting the import (11), and the pressure compensation is carried out through the gas pressure in the cylinder, the pressure relief passage (23) is used for connecting the valve body (1) outside, so as to be able to carry out the pressure relief to the pressure chamber (21), and the control device is arranged in the pressure chamber (21), and the control device is used to control the pressure chamber (21) and is communicated with the pressure compensation passage (22) or the pressure relief passage (23).

2. A resealable container valve according to claim 1, characterised in that: The control device includes a valve core (3) arranged in the pressure compensation passage (22), the valve core (3) is provided with a switch, so as to be able to control the on-off of the valve core (3), and the valve body (1) is provided with a push assembly (4), the push assembly (4) is used to control the on-off of the pressure relief passage (23), and the switch of the valve core (3) can be pressed or released.

3. A resealable container valve according to claim 2, wherein: The push assembly (4) includes an electromagnet (41) mounted on the valve body (1), and the moving part of the electromagnet (41) partially extends into the valve body (1) and can press the switch of the valve core (3); The pressure relief passage (23) is arranged on the shell of the electromagnet (41) and communicates with the pressure chamber (21), and the movement of the moving part of the electromagnet (41) can control the on-off of the pressure relief passage (23).

4. A resealable container valve according to claim 1, wherein: The valve core (14) includes a sliding block (16) slidably arranged in the slide (13), the sliding block (16) is provided with a blocking piece (15) for cutting off the import (11) and the outlet (12), and the pressure chamber (21) is provided with a blocking piece (15) for cutting off the import (11) and the outlet (12), and the pressure chamber (21) is provided with a blocking piece (15) for cutting off the import (11) and the outlet (12).

5. A resealable container valve according to claim 1, wherein: The pressure chamber (21) compression state drives the valve core (14) to move and cut off the import (11) and the outlet (12); the pressure chamber (21) expansion state drives the valve core (14) to move and communicates the import (11) and the outlet (12).

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