Container valve with pressure reduction function

Abstract

The utility model provides a container valve with a decompression function, which belongs to the technical field of container valves and comprises an upper valve casing, a lower valve casing and an auxiliary valve body, the upper valve casing is fixedly connected to the top of the lower valve casing, a communicating cavity is arranged on the inner wall of the lower valve casing, one side of the lower valve casing is hermetically communicated with a communicating pipe, a feed port is arranged at the bottom of the inner wall of the communicating cavity, and the upper valve casing is provided with an accommodating cavity. A main valve rod is movably connected to the bottom of the inner wall of the containing cavity, a plugging head is arranged at the bottom end of the main valve rod, a lower connecting base is embedded in the top of the inner wall of the containing cavity, an upper connecting base is rotationally connected to the top of the lower connecting base, air leakage holes are formed in one side of the upper connecting base and one side of the lower connecting base, and the top of the upper connecting base communicates with a pressure reducing air pipe in a sealed mode. The position of the communicating seat is fixed, the screw stops rotating the positions of the main valve rod and the auxiliary valve rod which are in threaded connection with the screw, the purpose of freely adjusting the spraying amount of the fire extinguishing agent is achieved, and a gap between the plugging head and the feeding port can be fixed after air pressure is stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of container valves, and in particular relates to a container valve with a pressure reducing function. Background Art

[0002] The existing pressure reducing valve is not convenient for pressure adjustment, the instantaneous impact force of the air pressure is too strong when it is opened, and the outlet area of ​​the ejection volume cannot be changed. Among them, the "a pressure reducing container valve" disclosed with the application number "CN201921895076.X" is also an increasingly mature technology. The air source enters the valve core through the air inlet joint, and the air source drives the lower push rod to move. At this time, the lower spring is compressed, and the upper valve stem is driven to move by the movement of the lower push rod. At this time, the upper spring is compressed, and the valve core is driven to move by the movement of the lower push rod and the upper valve stem, which is conducive to changing the outlet area and automatically reducing pressure. However, the device also has the following defects: in actual use, when the air pressure is changed, the air pressure cannot be kept constant during the pressure reduction process, the opening size is fixed, and the adjustment is not flexible enough, the air pressure is easily affected, and the outlet area is changed. Utility Model Content

[0003] The purpose of the utility model is to provide a container valve with a pressure reducing function, aiming to solve the problem in the prior art that when the air pressure is changed, the air pressure cannot be kept constant during the pressure reducing process, the opening size is fixed, and the adjustment flexibility is insufficient, the air pressure is easily affected, and the outlet area is changed.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising an upper valve housing, a lower valve housing, and an auxiliary valve body, the upper valve housing being fixedly connected to the top of the lower valve housing, a communicating cavity being provided on the inner wall of the lower valve housing, a communicating pipe being sealed and connected to one side of the lower valve housing, a feed port being provided at the bottom of the inner wall of the communicating cavity, an accommodating cavity being provided on the upper valve housing, a main valve stem being movably connected to the bottom of the inner wall of the accommodating cavity, a blocking head being provided at the bottom end of the main valve stem, a lower connecting seat being embedded at the top of the inner wall of the accommodating cavity, the top of the lower connecting seat being rotatably connected to the upper connecting seat, an air vent being provided on one side of the upper connecting seat and the lower connecting seat, and a decompression air pipe being sealed and connected to the top of the upper connecting seat;

[0005] The auxiliary valve body is fixedly installed on one side of the upper valve shell, an operating chamber is opened in the middle of the auxiliary valve body, a venting chamber is opened on one side of the operating chamber, an auxiliary valve stem is movably connected in the venting chamber, a connecting seat is rotatably connected to one side of the auxiliary valve body, a screw is fixedly connected to one side of the connecting seat, and the screw is threadedly connected to the middle part of the auxiliary valve stem.

[0006] In an embodiment of a container valve with a pressure reducing function of the present invention, first guide grooves are provided on both sides of the inner wall of the accommodating cavity, and first guide blocks are provided on both sides of the top of the main valve stem, and the first guide blocks are slidably connected to the first guide grooves.

[0007] In this solution, the upper connecting seat is rotated so that the air vent holes on the upper connecting seat and the lower connecting seat coincide with each other, the air in the accommodating cavity is released, and the air flow enters the pressure-reducing air pipe. At this time, the air pressure is reduced, and the fire-extinguishing material at the feed port pushes open the sealing head. At this time, the first guide block on the top of the main valve stem moves in the first guide groove, thereby improving the stability of the main valve stem during movement.

[0008] In an implementation scheme of a container valve with a decompression function of the present invention, second guide grooves are provided at the top and bottom of the operating chamber, and second guide blocks are provided at the top and bottom of one side of the auxiliary valve stem, and the second guide blocks are slidably connected in the second guide groove.

[0009] In this solution, the gas from the decompression air pipe enters the venting chamber. When adjusting the air pressure, the connecting seat rotating screw is rotated to drive the auxiliary valve stem to rotate. The auxiliary valve stem moves in the second guide groove through the second guide block, expanding the space in the venting chamber, allowing more gas in the accommodating chamber to enter the venting chamber, reducing the air pressure at the top of the main valve stem, expanding the gap between the sealing head and the feed port, and increasing the spraying amount of the fire extinguishing agent.

[0010] In an embodiment of a container valve with a pressure reducing function of the present utility model, the surface of the communication seat is provided with card slots, a card plate is hingedly connected to the top of one side of the auxiliary valve body, and the card slots are connected by card engagement with the card plate.

[0011] In this solution, when it is necessary to fix the air pressure in the venting chamber during the rotation of the connecting seat, the card plate is flipped and engaged with the card slot to fix the position of the connecting seat, so that the screw stops rotating and the main and auxiliary valve stems of the threaded connection are stuck. The connecting seat can be rotated in the reverse direction to make the screw rotate the main and auxiliary valve stems to push the air pressure in the venting chamber. The excess air pressure refluxes and pushes the top of the main valve stem, reducing the gap between the sealing head and the feed port, so as to achieve the purpose of freely adjusting the amount of fire extinguishing agent sprayed.

[0012] In an embodiment of a container valve with a decompression function of the utility model, an upper buffer spring is provided on the top of the main valve stem, a sealing seat is provided in the middle of the main valve stem, and a lower buffer spring is provided on the top of the sealing seat.

[0013] In this solution, a double buffer structure is provided by an upper buffer spring and a lower buffer spring to avoid excessive impact force on the top of the main valve stem due to excessive air pressure during deflation.

[0014] In an embodiment of the container valve with a pressure reducing function of the utility model, a pressure gauge is provided on the top of the pressure reducing air pipe.

[0015] In this solution, a double buffer structure is provided by an upper buffer spring and a lower buffer spring to avoid excessive impact force on the top of the main valve stem due to excessive air pressure during deflation.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1) By rotating the upper connecting seat, the air vent holes on the upper connecting seat and the lower connecting seat overlap, the air in the accommodating cavity is released, and the air flow enters the decompression air pipe. At this time, the air pressure is reduced, and the fire extinguishing material at the feed inlet pushes open the sealing head, and the gas from the decompression air pipe enters the air release cavity. When adjusting the air pressure;

[0018] 2) At this time, the connecting seat is rotated to rotate the rotating screw to drive the auxiliary valve stem to rotate. The auxiliary valve stem moves in the second guide groove through the second guide block, expanding the space in the deflation chamber, allowing more gas in the accommodating chamber to enter the deflation chamber, reducing the air pressure on the top of the main valve stem, and expanding the gap between the plugging head and the feed port. When it is necessary to fix the air pressure in the deflation chamber, the card plate is flipped and engaged with the card slot to fix the position of the connecting seat, so that the screw stops rotating and the main and auxiliary valve stems of the main threaded connection are positioned to achieve the purpose of freely adjusting the amount of fire extinguishing agent sprayed. After the air pressure is stable, the gap between the plugging head and the feed port can be fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a schematic structural diagram of the upper connecting seat and the lower connecting seat of the utility model;

[0022] Figure 3 This is a schematic diagram of the auxiliary valve body structure of the utility model.

[0023] In the figure: 1, upper valve housing; 101, accommodating chamber; 102, main valve stem; 1021, upper buffer spring; 1022, sealing seat; 1023, lower buffer spring; 103, plugging head; 104, lower connecting seat; 105, upper connecting seat; 106, air vent; 107, pressure relief air pipe; 108, first guide groove; 109, first guide block;

[0024] 2. Lower valve housing; 201. Connecting cavity; 202. Connecting pipe; 203. Feed inlet;

[0025] 3. Auxiliary valve body; 301. Operating chamber; 302. Degassing chamber; 303. Auxiliary valve stem; 304. Connecting seat; 3041. Clamping groove; 3042. Clamping plate; 305. Screw; 306. Degassing pipe; 306. Second guide groove; 307. Second guide block;

[0026] 4. Barometer. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 3 The utility model provides the following technical solutions: a container valve with a pressure reducing function, comprising an upper valve shell 1, a lower valve shell 2, and an auxiliary valve body 3, the upper valve shell 1 is fixedly connected to the top of the lower valve shell 2, a communicating cavity 201 is provided on the inner wall of the lower valve shell 2, one side of the lower valve shell 2 is sealed and connected to a communicating pipe 202, a feed port 203 is provided at the bottom of the inner wall of the communicating cavity 201, the upper valve shell 1 is provided with a accommodating cavity 101, a main valve stem 102 is movably connected to the bottom of the inner wall of the accommodating cavity 101, a blocking head 103 is provided at the bottom end of the main valve stem 102, a lower connecting seat 104 is embedded in the top of the inner wall of the accommodating cavity 101, the top of the lower connecting seat 104 is rotatably connected to the upper connecting seat 105, an air vent 106 is provided on one side of the upper connecting seat 105 and the lower connecting seat 104, and a pressure reducing air pipe 107 is sealed and connected to the top of the upper connecting seat 105;

[0029] The auxiliary valve body 3 is fixedly installed on one side of the upper valve shell 1, and an operating chamber 301 is opened in the middle of the auxiliary valve body 3. A venting chamber 302 is opened on one side of the operating chamber 301. An auxiliary valve stem 303 is movably connected in the venting chamber 302. A connecting seat 304 is rotatably connected to one side of the auxiliary valve body 3, and a screw 305 is fixedly connected to one side of the connecting seat 304. The screw 305 is threadedly connected to the middle of the auxiliary valve stem 303.

[0030] For a specific embodiment of a container valve with a pressure reducing function, please refer to Figure 1 : First guide grooves 108 are provided on both sides of the inner wall of the accommodating chamber 101, and first guide blocks 109 are provided on both sides of the top of the main valve stem 102. The first guide blocks 109 are slidably connected to the first guide grooves 108.

[0031] See also Figure 1 : Rotate the upper connecting seat 105 so that the air vent holes on the upper connecting seat 105 and the lower connecting seat 104 coincide with 106, and the air in the accommodating chamber 101 is released. The air flow enters the decompression air pipe 107. At this time, the air pressure is reduced, and the fire extinguishing material at the feed port 203 pushes open the sealing head 103. At this time, the first guide block 109 at the top of the main valve stem 102 moves in the first guide groove 108, thereby improving the stability of the main valve stem 102 during movement.

[0032] For a specific embodiment of a container valve with a pressure reducing function, please refer to Figure 3: A second guide groove 306 is opened at the top and bottom of the operating chamber 301, and a second guide block 307 is provided at the top and bottom of one side of the auxiliary valve stem 303, and the second guide block 307 is slidably connected to the second guide groove 306.

[0033] See also Figure 3 : The gas in the decompression air pipe 107 enters the deflation chamber 302. When adjusting the air pressure, the connecting seat 304 is rotated to rotate the rotating screw 305 to drive the auxiliary valve stem 303 to rotate. The auxiliary valve stem 303 moves in the second guide groove 306 through the second guide block 307, expanding the space in the deflation chamber 302, allowing more gas in the accommodating chamber 101 to enter the deflation chamber 302, reducing the air pressure at the top of the main valve stem 102, expanding the gap between the sealing head 103 and the feed port 203, and increasing the amount of fire extinguishing agent sprayed.

[0034] For a specific embodiment of a container valve with a pressure reducing function, please refer to Figure 3 : The surface of the connecting seat 304 is provided with card slots 3041 , and a card plate 3042 is hingedly connected to the top of one side of the auxiliary valve body 3 , and the card slots 3041 are engaged with the card plate 3042 .

[0035] See also Figure 3 : When it is necessary to fix the air pressure in the deflation chamber 302 during the rotation of the connecting seat 304, the flip card plate 3042 is engaged with the card slot 3041 to fix the position of the connecting seat 304, so that the screw 305 stops rotating and the main and auxiliary valve stems 303 are stuck in the threaded connection. The connecting seat 304 can be rotated in the opposite direction to make the screw 305 rotate the main and auxiliary valve stems 303 to push the air pressure in the deflation chamber 302. The excess air pressure refluxes and pushes the top of the main valve stem 102, reducing the gap between the sealing head 103 and the feed port 203, so as to achieve the purpose of freely adjusting the amount of fire extinguishing agent sprayed.

[0036] For a specific embodiment of a container valve with a pressure reducing function, please refer to Figure 1 : An upper buffer spring 1021 is provided at the top of the main valve stem 102, a sealing seat 1022 is provided in the middle of the main valve stem 102, and a lower buffer spring 1023 is provided at the top of the sealing seat 1022.

[0037] See also Figure 1 : A double buffer structure is provided by the upper buffer spring 1021 and the lower buffer spring 1023 to avoid excessive impact force on the top of the main valve stem 102 due to excessive air pressure during deflation.

[0038] In a specific embodiment of a container valve with a decompression function, please refer to the figure: a pressure gauge 4 is provided on the top of the decompression air pipe 107.

[0039] See also Figure 1 : Detect the air pressure in the decompression air pipe 107 through the barometer 4 to make the air pressure in a balanced state.

[0040] The utility model provides a container valve with a decompression function, which is specifically used as follows: rotate the upper connecting seat 105 so that the air vent holes on the upper connecting seat 105 and the lower connecting seat 104 coincide with 106, thereby releasing air from the accommodating chamber 101 and allowing the air flow to enter the decompression air pipe 107. At this time, the air pressure is reduced, and the fire extinguishing material at the feed port 203 pushes open the sealing plug 103. At this time, the first guide block 109 on the top of the main valve stem 102 moves in the first guide groove 108, thereby improving the stability of the main valve stem 102 during movement, and allowing the gas in the decompression air pipe 107 to enter the decompression chamber 302. When adjusting the air pressure, the connecting seat 304 is rotated to rotate the rotating screw 305, driving the auxiliary valve stem 303 to rotate. The auxiliary valve stem 303 moves in the second guide groove 306 through the second guide block 307, thereby expanding the space in the decompression chamber 302, so that the air in the accommodating chamber 101 can be further decompressed. When the air pressure in the air release chamber 302 needs to be fixed, the card plate 3042 is flipped and engaged with the card slot 3041 to fix the position of the connecting seat 304, so that the screw 305 stops rotating. The main and auxiliary valve stems 303 of the threaded connection can be fixed by rotating the connecting seat 304 in the opposite direction to rotate the screw 305 to rotate the main and auxiliary valve stems 303 to push the air pressure in the air release chamber 302. The excess air pressure flows back to push the top of the main valve stem 102, reducing the gap between the plugging head 103 and the feed port 203, so as to achieve free adjustment of the fire extinguishing agent spraying amount. The upper buffer spring 1021 and the lower buffer spring 1023 provide a double buffer structure to avoid excessive air pressure during deflation, which causes excessive impact force on the top of the main valve stem 102.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A container valve with a pressure reducing function, comprising an upper valve housing (1), a lower valve housing (2), and an auxiliary valve body (3), characterized in that: The upper valve shell (1) is fixedly connected to the top of the lower valve shell (2); a connecting cavity (201) is provided on the inner wall of the lower valve shell (2); a connecting pipe (202) is sealed and connected to one side of the lower valve shell (2); a feed port (203) is provided on the bottom of the inner wall of the connecting cavity (201); an accommodating cavity (101) is provided on the upper valve shell (1); a main valve stem (102) is movably connected to the bottom of the inner wall of the accommodating cavity (101); a plugging head (103) is provided at the bottom end of the main valve stem (102); a lower connecting seat (104) is embedded in the top of the inner wall of the accommodating cavity (101); an upper connecting seat (105) is rotatably connected to the top of the lower connecting seat (104); an air vent (106) is provided on one side of the upper connecting seat (105) and the lower connecting seat (104); and a pressure relief air pipe (107) is sealed and connected to the top of the upper connecting seat (105); The auxiliary valve body (3) is fixedly mounted on one side of the upper valve housing (1); an operating chamber (301) is provided in the middle of the auxiliary valve body (3); a venting chamber (302) is provided on one side of the operating chamber (301); an auxiliary valve stem (303) is movably connected in the venting chamber (302); a connecting seat (304) is rotatably connected to one side of the auxiliary valve body (3); a screw (305) is fixedly connected to one side of the connecting seat (304); and the screw (305) is threadedly connected to the middle of the auxiliary valve stem (303).

2. The container valve with pressure reducing function according to claim 1, characterized in that: First guide grooves (108) are provided on both sides of the inner wall of the accommodating cavity (101), and first guide blocks (109) are provided on both sides of the top of the main valve stem (102), and the first guide blocks (109) are slidably connected in the first guide grooves (108).

3. The container valve with pressure reducing function according to claim 1, characterized in that: The top and bottom of the operating chamber (301) are provided with second guide grooves (306), and the top and bottom of one side of the auxiliary valve stem (303) are provided with second guide blocks (307), and the second guide blocks (307) are slidably connected in the second guide grooves (306).

4. The container valve with pressure reducing function according to claim 1, characterized in that: The surface of the communication seat (304) is provided with card slots (3041), and a card plate (3042) is hingedly connected to the top of one side of the auxiliary valve body (3), and the card slots (3041) are engaged with the card plate (3042).

5. The container valve with pressure reducing function according to claim 1, characterized in that: An upper buffer spring (1021) is provided at the top of the main valve stem (102), a sealing seat (1022) is provided in the middle of the main valve stem (102), and a lower buffer spring (1023) is provided at the top of the sealing seat (1022).

6. The container valve with pressure reducing function according to claim 1, characterized in that: A pressure gauge (4) is provided on the top of the decompression air pipe (107).

Images