Fire-fighting container valve capable of being started repeatedly under low driving force

Abstract

The utility model relates to the technical field of fire-fighting articles, and discloses a fire-fighting container valve capable of being started repeatedly under low driving force, which comprises a shell and a valve core element movably arranged in the shell, the shell is provided with an air inlet, an air outlet and a first channel communicated between the air inlet and the air outlet, and the shell is provided with a driving device. The driving device is used for driving the valve element element to open / block the first channel, the valve element element comprises a blocking end used for blocking the first channel, a stress end is formed at the end, away from the blocking end, of the valve element element, a first cavity is formed between the blocking end and the shell, and a second cavity communicated with the first cavity is formed between the stress end and the shell. And the valve core element is arranged in the shell in a sliding manner. According to the fire-fighting container valve capable of being started repeatedly with low driving force, the driving force for opening the container valve is small, and opening is convenient; the power and the size of an electromagnet in the driving device can be set to be small, so that the voltage safety of system operation is guaranteed, and carrying and arrangement are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment, in particular to a fire-fighting container valve capable of being started multiple times with low driving force. Background Art

[0002] Fire bottles are widely used in the field of fire protection engineering. As fire extinguishing tools, fire bottles are preset in corresponding positions for use in case of fire. Fire bottles are equipped with a container valve that can spray out the fire extinguishing substances stored in the bottle. The container valve is equipped with a pressure gauge to display the pressure in the bottle.

[0003] Some existing fire container valves use the driving force of a starting device to drive the valve core to open the container valve. The driving force of the opening device depends on the working pressure of the valve. The driving force needs to be greater than the pressure in the container on the valve to successfully open. Since the pressure in the fire container is generally very high, a large driving force is required to open the container valve, resulting in the problem that the container valve is difficult to open; in addition, some existing fire container valves that are opened and closed by electromagnetic devices, the greater the opening driving force required, the greater the power of the electromagnet required, which leads to the following problems: 1. The power of the electromagnet is relatively large, making it difficult to control the system operating voltage within the continuous contact safety voltage (DC24V), thereby causing certain safety hazards; 2. The greater the power of the electromagnet, the larger the size of the opening device (electromagnetic device), resulting in a large space occupied, which is not convenient for carrying and installation and layout of the device. Utility Model Content

[0004] In order to solve at least one aspect of the above problems, the utility model provides a fire container valve with low driving force and multiple starts, comprising: a shell and a valve core element movably built into the shell, the shell is provided with an air inlet, an air outlet and a first channel connected between the air inlet and the air outlet, the shell is provided with a driving device, the driving device is used to drive the valve core element to open / block the first channel, the valve core element includes a blocking end for blocking the first channel, a force-bearing end is formed at one end of the valve core element away from the blocking end, a first chamber is formed between the blocking end and the shell, a second chamber connected to the first chamber is formed between the force-bearing end and the shell, the valve core element is slidably placed in the shell, in the sliding direction of the valve core element: the air pressure area of ​​the blocking end subjected to the first chamber is a first area, the air pressure area of ​​the force-bearing end subjected to the second chamber is a second area, and the first area is smaller than the second area;

[0005] The driving device includes a driving part and a pressure regulating part for adjusting the air pressure in the second chamber, the pressure regulating part includes a starting rod and a second channel for connecting the second chamber with the outside world, and the driving part is used to drive the starting rod to open / block the second channel; in normal state, the first channel and the second channel are both closed; when started, the driving part drives the starting rod to open the second channel, so that the gas in the second chamber is discharged to the outside world through the second channel, so that the air pressure in the second chamber is reduced, and the valve core element slides to open the first channel; the fire container valve of the utility model with low driving force and multiple starts has a small driving force to open the container valve, which is easy to open; the power and volume of the electromagnet in the driving device can be set to be small, so as to ensure the voltage safety of the system operation and facilitate carrying and arrangement.

[0006] Optionally, the starting rod is slidably arranged, and a first pressure-bearing part and a second pressure-bearing part that are subjected to the air pressure of the second chamber are formed on the starting rod. In the sliding direction of the starting rod, the directions of the forces applied to the first pressure-bearing part and the second pressure-bearing part are opposite and the magnitudes are the same.

[0007] Optionally, the first pressure-bearing portion is a first annular surface, the second pressure-bearing portion is a second annular surface, and the first annular surface and the second annular surface are symmetrical.

[0008] Optionally, a third channel for connecting the first chamber and the second chamber is provided on the valve core element, and the third channel includes a flow limiting channel.

[0009] Optionally, the third channel also includes a channel outlet, and a blocking rod for blocking the channel outlet is slidably provided on the shell, and the blocking rod is pushed to slide to one side of the channel outlet by the starting rod; when the valve core element slides open, the channel outlet is blocked by the sliding blocking rod.

[0010] Optionally, a plugging head is provided at one end of the air blocking rod close to the channel outlet, and a first sealing ring corresponding to the plugging head is provided on the valve core element.

[0011] Optionally, a first elastic member is provided between the housing and the valve core element, and the first elastic member is used to drive the valve core element to block the first channel.

[0012] Optionally, a sliding cavity for slidingly installing the starting rod is provided on the shell, and a second sealing ring and a third sealing ring are provided on the starting rod. The inner wall of the sliding cavity forms a first abutting portion for abutting and sealing with the second sealing ring and a second abutting portion for abutting and sealing with the third sealing ring, and an annular avoidance groove is formed between the first abutting portion and the second abutting portion; when the starting rod drives the second sealing ring to slide into the annular avoidance groove, the second channel is in an open state.

[0013] Optionally, the driving part includes a push-pull electromagnet fixedly connected to the housing, and the push-pull electromagnet includes a push rod for pushing the starting rod.

[0014] Optionally, a second elastic member is provided between the starting rod and the housing.

[0015] Compared with the prior art, the fire container valve with low driving force and multiple activation of the utility model has a small driving force to open the container valve, which is easy to open; the power and volume of the electromagnet in the driving device can be set to be small, so as to ensure the voltage safety of the system operation and to be easy to carry and arrange; by using a small driving force to open the second channel first, so that the second chamber loses pressure and a pressure difference is formed between the first chamber, and then the pressure difference is used to drive the valve core element to slide up and open, so as to realize the function of opening the container valve by a small driving force; when the valve core element slides open, the passage is opened by the air blocking rod that slides out The outlet of the channel is blocked; the third channel includes a flow limiting channel, so that after the second channel is opened, the pressure loss rate of the second chamber is greater than the air-increasing and pressure-increasing rate of the first chamber to the second chamber, so as to form the pressure difference required for the valve core element to slide up, and the structural design is reasonable and ingenious; after the valve core element slides into place, the third channel is blocked by the air blocking rod to prevent the gas from continuing to be discharged from the third channel to the outside and causing unnecessary waste, and the structural design is reasonable; a sealing head is provided at one end of the air blocking rod close to the outlet of the channel, and a first sealing ring corresponding to the sealing head is provided on the valve core element, so as to have a good sealing effect and avoid air leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the fire container valve with low driving force and multiple starts in normal state of the utility model;

[0017] Figure 2 for Figure 1 Enlarged view of the middle C part;

[0018] Figure 3 for Figure 1 Enlarged view of the middle D part;

[0019] Figure 4 It is a cross-sectional view of the fire container valve with low driving force and multiple starts at the moment of starting of the utility model;

[0020] Figure 5 for Figure 4 Enlarged view of the middle E part;

[0021] Figure 6 It is a cross-sectional view of the fire container valve of the utility model with low driving force and multiple starts in an open state;

[0022] Figure 7 for Figure 6 Enlarged view of the middle F part;

[0023] Figure 8 It is a cross-sectional view of the fire container valve of the utility model with low driving force and multiple starts at the moment of closing;

[0024] Fig. 9 for Figure 8 Enlarged view of the middle G section;

[0025] Fig.10 It is a cross-sectional view of the fire container valve with low driving force and multiple starts of the utility model when it is replenished with gas and reset;

[0026] Fig.11 for Fig.10 Enlarged view of the middle H section;

[0027] Fig.12 A three-dimensional diagram of the fire container valve housing with low driving force and multiple activations according to the utility model;

[0028] The names of the components corresponding to the reference numerals in the figure are: 1 is a housing, 2 is a valve core element, 21 is a blocking end, 211 is a first sealing ring, 22 is a force-bearing end, 23 is a second sealing ring, 3 is a starting rod, 31 is a first pressure-bearing part, 32 is a second pressure-bearing part, 33 is a second sealing ring, 34 is a third sealing ring, 4 is a second channel, 5 is a third channel, 51 is a flow-limiting channel, 52 is a channel outlet, 53 is a non-flow-limiting channel, 6 is a gas blocking rod, 61 is a plugging head, 62 is a first sealing ring, 7 is a first elastic member, 8 is a push-pull electromagnet, 81 is a push rod, 9 is a second elastic member, 11 is an air inlet, 12 is an air outlet, 13 is a first channel, 14 is a sliding cavity, 141 is a first abutting portion, 142 is a second abutting portion, 143 is an annular avoidance groove, 15 is a first connecting groove, 16 is a second connecting groove, A is a first chamber, B is a second chamber, SA is a first area, and SB is a second area. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] In the description of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate positions or location relationships that are based on the positions or location relationships when the product is in normal use.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0032] See also Figure 1-Figure 12 The embodiment of the utility model provides a fire container valve with low driving force and multiple starts, comprising: a shell 1 and a valve core element 2 movably built into the shell 1, the shell 1 is provided with an air inlet 11, an air outlet 12 and a first channel 13 connected between the air inlet 11 and the air outlet 12, the opening directions of the air inlet 11 and the air outlet 12 are perpendicular, the air inlet 11 is connected to an external fire container such as a fire bottle, the fire container is filled with a relatively high pressure fire extinguishing gas, and the air outlet 12 is used to discharge the fire extinguishing gas; a driving device is provided on the shell 1, and the driving device is used to drive the valve core element 2 to open / block the first channel 13 The valve core element 2 includes a blocking end 21 for blocking the first channel 13. The end of the valve core element 2 away from the blocking end 21 is formed with a force-bearing end 22. The blocking end 21 is formed at the lower end of the valve core element 2, and the blocking end 21 is provided with a first sealing ring 211; the force-bearing end 22 is formed at the upper end of the valve core element 2, and the valve core element 2 slides up and down in the vertical direction. When the valve core element 2 slides down to its place, the first channel 13 is blocked by the blocking end 21. When the valve core element 2 slides up, the first channel 13 is opened. At this time, the air inlet 11 and the air outlet 12 are connected, so that the fire extinguishing gas is discharged from the air outlet 12; the blocking end 21 and the shell 1 are connected. A first chamber A is formed between the force-bearing end 22 and the shell 1, and a second chamber B connected to the first chamber A is formed between the force-bearing end 22 and the shell 1. A second sealing ring 23 for sealing against the inner wall of the second chamber B is arranged on the valve core element 2. The valve core element 2 is cylindrical; the valve core element 2 is slidably placed in the shell 1. In the sliding direction of the valve core element 2: the air pressure area of ​​the blocking end 21 subjected to the first chamber A is the first area SA, and the air pressure area of ​​the force-bearing end 22 subjected to the second chamber B is the second area SB. The first area SA is smaller than the second area SB. In normal state, that is, when the fire container is normally stored for standby use, since the first chamber A is connected to the second chamber B, The pressure of the first chamber A and the second chamber B is the same. Since the first area SA is smaller than the second area SB, the downward force on the force-bearing end 22 is greater than the upward force on the blocking end 21, and there is a pressure difference between the downward force and the upward force. The valve core element 2 is pressed downward to seal the first channel 13 through this pressure difference, and this pressure difference needs to be large enough to ensure that the valve core element 2 is maintained in a state of sliding down into place (it can be seen that if the valve core element 2 is directly driven upward to open, a larger driving force is required), so as to ensure that the valve core element 2 maintains its blocked closed state in normal state and will not be opened by mistake, and the blocking is reliable to avoid air leakage, and the use is reliable;

[0033] The driving device includes a driving part and a pressure regulating part for regulating the air pressure of the second chamber B. The pressure regulating part includes a starting rod 3 and a second channel 4 for connecting the second chamber B with the outside. The driving part is used to drive the starting rod 3 to open / block the second channel 4. In normal state, the first channel 13 and the second channel 4 are both closed. When started, the driving part drives the starting rod 3 to open the second channel 4, so that the gas in the second chamber B is discharged to the outside through the second channel 4, so that the air pressure in the second chamber B is reduced, so that the second chamber B loses pressure quickly and tends to the outside pressure, that is, the air pressure in the second chamber B is much lower than the air pressure in the first chamber A. At this time, the force-bearing end 22 is downward The force applied is smaller than the upward force applied to the blocking end 21, so that the valve core element 2 slides upward to open the first channel 13 to realize the container valve opening function. The second channel 4 is first opened by using a smaller driving force to form a pressure difference between the second chamber B and the first chamber A due to the loss of pressure. This pressure difference is then used to drive the valve core element 2 to slide upward and open, thereby realizing the function of opening the container valve by a smaller driving force. The fire container valve of the utility model can be started multiple times with a low driving force, and the driving force for opening the container valve is smaller, so it is easy to open. The power and volume of the electromagnet in the driving device can be set smaller to ensure the voltage safety of the system operation and to facilitate carrying and arrangement.

[0034] See also Figure 1-Figure 3 The starter rod 3 is arranged to slide up and down in the vertical direction. The starter rod 3 is formed with a first pressure-receiving portion 31 and a second pressure-receiving portion 32 that are subjected to the air pressure of the second chamber B. In the sliding direction of the starter rod 3, that is, in the vertical direction of action: the first pressure-receiving portion 31 and the second pressure-receiving portion 32 are subjected to forces in opposite directions and of the same magnitude. At this time, the starter rod is subjected to the pressure of the second chamber B in the vertical direction with equal values ​​and opposite directions. Therefore, in this case, the downward movement of the starter rod is only subjected to a small resistance (the resistance of the second elastic member and the friction force). Such a design allows the valve to be opened with only a small driving force under high pressure in the bottle. The first pressure-receiving portion 31 is an inclined first annular surface, and the second pressure-receiving portion 32 is an inclined second annular surface. An annular surface and a second annular surface are symmetrical, so that in the vertical direction of action: the directions of the forces on the first pressure-bearing part 31 and the second pressure-bearing part 32 are opposite and the same in magnitude; a third channel 5 for connecting the first chamber A and the second chamber B is provided on the valve core element 2, and the third channel 5 runs through in the vertical direction; the third channel 5 includes a flow-limiting channel 51 and a non-flow-limiting channel 53, and the channel size of the flow-limiting channel 51 is much smaller than the size of the non-flow-limiting channel, and the channel size of the flow-limiting channel 51 is also much smaller than the size of the second channel 4, so that after the second channel 4 is opened, the pressure loss speed of the second chamber B is greater than the air-replenishing and pressure-replenishing speed of the first chamber A to the second chamber B, so as to form the pressure difference required for the valve core element 2 to slide up, and the structural design is reasonable and ingenious.

[0035] See also Figure 1 , Figure 2 , Figure 3 and Figure 7 The third channel 5 also includes a channel outlet 52, and a blocking rod 6 for blocking the channel outlet 52 is slidably provided on the shell 1, and the blocking rod 6 is pushed to slide out to one side of the channel outlet 52 by the starting rod 3; when the valve core element 2 slides open, the channel outlet 52 is blocked by the sliding blocking rod 6; after the valve core element 2 slides into place, the third channel 5 is blocked by the blocking rod 6 to prevent the gas from continuing to be discharged from the third channel to the outside and causing unnecessary waste, and the structural design is reasonable; a sealing head 61 is provided at one end of the blocking rod 6 close to the channel outlet 52, and a first sealing ring 62 corresponding to the sealing head 61 is provided on the valve core element 2, which has a good sealing effect and avoids air leakage.

[0036] See also Figure 1-Figure 3 A first elastic member 7 is provided between the housing 1 and the valve core element 2. The first elastic member 7 is used to drive the valve core element 2 to block the first channel 13. The first elastic member 7 is a first compression spring. The two ends of the first elastic member 7 are respectively abutted on the housing 1 and the valve core element 2; a sliding chamber 14 for slidingly installing the start rod 3 is provided on the housing 1, and a second sealing ring 33 and a third sealing ring 34 are provided on the start rod 3. The inner wall of the sliding chamber 14 forms a first abutting portion 141 for abutting and sealing with the second sealing ring 33 and a second abutting portion 142 for abutting and sealing with the third sealing ring 34. An annular avoidance groove 143 is formed between the first abutting portion 141 and the second abutting portion 142; when the start rod 3 drives the second sealing ring 33 to slide into the annular avoidance groove 143, the second channel 4 is in an open state; the second channel 4 includes a sliding chamber 14, a first communicating groove 15 and a second communicating groove 16. The sliding chamber 14 is connected with the second chamber B through the first communicating groove 15, and the sliding chamber 14 is connected with the outside through the second communicating groove 16.

[0037] See also Figure 1-Figure 11 The driving part includes a push-pull electromagnet 8 fixedly connected to the shell 1, and the push-pull electromagnet 8 includes a push rod 81 for pushing the start rod 3. In the normal state, that is, when the container valve is closed, the push rod 81 is in a retracted state; when the container valve is opened, the push rod 81 is pushed downward; when the container valve is switched back to the closed state from the open state, the push rod 81 is retracted upward and reset; a second elastic member 9 is arranged between the start rod 3 and the shell 1, and the second elastic member 9 is a second compression spring, and the two ends of the second elastic member 9 are respectively abutted on the start rod 3 and the shell 1. When the push rod 81 is retracted upward, the start rod 3 slides upward and resets under the action of the second elastic member 9, and the reset is convenient; the use state of the container valve is described as follows: refer to Figure 1-Figure 3 ①In the initial state, the first chamber A and the second chamber B are in a static state. When the bottle is pressurized and filled, the air pressure in the first chamber A and the second chamber B is made consistent through the flow-limiting channel. Since the first area SA is smaller than the second area SB, the valve core element is subjected to a greater force from the second chamber B, maintaining its closure and preventing the turntable from opening; see Figure 4 and Figure 5 ,②At the moment of starting: the push-pull electromagnet 8 pushes the starter rod downward, the gas in the second chamber B is discharged to the outside, and the starter rod pushes out the air blocking rod at the same time; Figure 6 and Figure 7 ,③Open state: The gas in the second chamber B is discharged, the pressure drops, and the second chamber B loses pressure too quickly, causing the first chamber A to push the valve core element up, and the air blocking rod blocks the third channel. At this time, the second chamber B is emptied and the valve continues to open; refer to Figure 8 and Fig. 9 ④ Closing moment: the push-pull electromagnet is powered off, the push rod is retracted, the starter rod is acted upon by the second elastic member, and begins to reset, the second chamber B is exhausted and closed, at this time the air blocking rod is only affected by the pressure of the first chamber A, and the air blocking rod begins to reset under the push of the gas in the first chamber A; refer to Fig.10 and Fig.11 ⑤ Reset after air replenishment: the air blocking rod rises, and the first chamber A replenishes air to the second chamber B through the flow limiting channel to replenish pressure, and the air pressure of the second chamber B rises. When the air pressure of the second chamber B rises to the same as the air pressure of the second chamber A, the valve core element begins to descend until it returns to the initial state for maintenance; refer to Figure 1-Figure 3 ,⑥Restore to the normal initial state. At this time, the container valve returns to the initial state, the container valve maintains a constant pressure balance, and the electromagnet is started again, the container valve will open again. The cycle can be repeated many times until the pressure in the bottle is not enough to open the valve, and the use experience is good.

[0038] The utility model discloses a fire container valve with low driving force and multiple activation, and the driving force for opening the container valve is small, so that it is easy to open; the power and volume of the electromagnet in the driving device can be set small, so as to ensure the voltage safety of the system operation and to be easy to carry and arrange; the second channel is first opened by using a small driving force, so that the second chamber loses pressure and a pressure difference is formed between the first chamber, and then the valve core element is driven to slide up and open by using this part of the pressure difference, so as to realize the function of opening the container valve by a small driving force; when the valve core element slides open, the channel outlet is blocked by the air blocking rod that slides out; the third channel includes a flow limiting channel, so that after the second channel is opened, the pressure loss speed of the second chamber is greater than the air replenishment and pressure replenishment speed of the first chamber to the second chamber, so as to form the pressure difference required for the valve core element to slide up, and the structural design is reasonable and ingenious; after the valve core element slides into place, the third channel is blocked by the air blocking rod, so as to avoid unnecessary waste caused by the gas continuing to be discharged from the third channel to the outside, and the structural design is reasonable; a blocking head is arranged at one end of the air blocking rod close to the channel outlet, and a first sealing ring corresponding to the blocking head is arranged on the valve core element, so that the blocking effect is good and air leakage is avoided.

[0039] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A fire container valve with low driving force and multiple activations, comprising: A housing (1) and a valve core element (2) movably built into the housing (1), the housing (1) being provided with an air inlet (11), an air outlet (12) and a first channel (13) communicating between the air inlet (11) and the air outlet (12), the housing (1) being provided with a driving device, the driving device being used to drive the valve core element (2) to open / block the first channel (13), characterized in that the valve core element (2) comprises a blocking end (21) for blocking the first channel (13), and an end of the valve core element (2) away from the blocking end (21) is formed with a receiving A force end (22), a first chamber (A) is formed between the blocking end (21) and the shell (1), a second chamber (B) connected to the first chamber (A) is formed between the force-receiving end (22) and the shell (1), the valve core element (2) is slidably placed in the shell (1), and in the sliding direction of the valve core element (2): the area of ​​the blocking end (21) affected by the air pressure of the first chamber (A) is a first area (SA), and the area of ​​the force-receiving end (22) affected by the air pressure of the second chamber (B) is a second area (SB), and the first area (SA) is smaller than the second area (SB); The driving device comprises a driving part and a pressure regulating part for regulating the gas pressure of the second chamber (B), the pressure regulating part comprises a starting rod (3) and a second channel (4) for connecting the second chamber (B) with the outside, the driving part is used to drive the starting rod (3) to open / block the second channel (4); in normal state, the first channel (13) and the second channel (4) are both closed; when started, the driving part drives the starting rod (3) to open the second channel (4), so that the gas in the second chamber (B) is discharged to the outside through the second channel (4), so that the gas pressure in the second chamber (B) is reduced, so that the valve core element (2) slides to open the first channel (13).

2. The low-driving-force multiple-start fire container valve according to claim 1, characterized in that: The starting rod (3) is slidably arranged, and a first pressure-receiving portion (31) and a second pressure-receiving portion (32) are formed on the starting rod (3) and are subjected to the air pressure of the second chamber (B). In the sliding direction of the starting rod (3), the forces applied to the first pressure-receiving portion (31) and the second pressure-receiving portion (32) are in opposite directions and have the same magnitude.

3. The low-driving-force multiple-start fire container valve according to claim 2, characterized in that: The first pressure-bearing portion (31) is a first annular surface, the second pressure-bearing portion (32) is a second annular surface, and the first annular surface and the second annular surface are symmetrical.

4. The low-driving-force multiple-start fire container valve according to claim 1, characterized in that: The valve core element (2) is provided with a third channel (5) for connecting the first chamber (A) and the second chamber (B), and the third channel (5) includes a flow limiting channel (51).

5. The low-driving-force multiple-start fire container valve according to claim 4, characterized in that: The third channel (5) also includes a channel outlet (52), and a gas blocking rod (6) for blocking the channel outlet (52) is slidably provided on the housing (1), and the gas blocking rod (6) is pushed to slide out to one side of the channel outlet (52) by the start rod (3); when the valve core element (2) slides open, the channel outlet (52) is blocked by the sliding gas blocking rod (6).

6. The low-driving-force multiple-start fire container valve according to claim 5, characterized in that: A plugging head (61) is provided at one end of the air blocking rod (6) close to the channel outlet (52), and a first sealing ring (62) corresponding to the plugging head (61) is provided on the valve core element (2).

7. The low-driving-force multiple-start fire container valve according to claim 1, characterized in that: A first elastic member (7) is provided between the housing (1) and the valve core element (2), and the first elastic member (7) is used to drive the valve core element (2) to block the first channel (13).

8. The low-driving-force multiple-start fire container valve according to claim 1, characterized in that: The housing (1) is provided with a sliding cavity (14) for slidably mounting the starting rod (3); the starting rod (3) is provided with a second sealing ring (33) and a third sealing ring (34); the inner wall of the sliding cavity (14) is formed with a first abutting portion (141) for abutting and sealing with the second sealing ring (33) and a second abutting portion (142) for abutting and sealing with the third sealing ring (34); an annular avoidance groove (143) is formed between the first abutting portion (141) and the second abutting portion (142); when the starting rod (3) drives the second sealing ring (33) to slide into the annular avoidance groove (143), the second channel (4) is in an open state.

9. The low-driving-force multiple-start fire container valve according to any one of claims 1 to 8, characterized in that: The driving part comprises a push-pull electromagnet (8) fixedly connected to the housing (1), and the push-pull electromagnet (8) comprises a push rod (81) for pushing the starting rod (3).

10. The low-driving-force multiple-start fire container valve according to claim 9, characterized in that: A second elastic member (9) is provided between the starting rod (3) and the housing (1).

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