A full-pressure high-speed exhaust valve

Abstract

The present invention relates to the field of pipelines, and discloses a full-pressure high-speed exhaust valve. The gas in the pipeline is squeezed into the first chamber by water, most of the gas is discharged from the first exhaust port, and a small amount of gas enters the upper chamber through the third exhaust port. Due to the clearance between the guide sleeve and the trigger rod, only a trace amount of gas overflows from the upper chamber. As the gas in the upper chamber increases, the diaphragm drives the hollow rod to slide downward under the action of the gas pressure in the upper chamber, so that the sealing plate keeps the first exhaust port open, ensuring that a large amount of gas is discharged through the first exhaust port during the water filling stage of the pipeline, avoiding the pipe burst affecting the normal water supply, the flow meter being inaccurate, and the like. The full-pressure high-speed exhaust valve provided by the present invention realizes both large-scale exhaust and continuous trace exhaust during the whole process of pipeline water filling, and does not need to be configured with a bypass control pipeline.

Description

Technical Field

[0001] The invention relates to the field of pipelines, and in particular to a full-pressure high-speed exhaust valve. Background Art

[0002] The exhaust valve is mainly used to exhaust the gas in the pipeline and to add gas when the pipeline forms a negative pressure to protect the safety of the pipeline network. Most existing exhaust valves have a closed pressure difference, that is, when the pipeline pressure is high, a large pressure difference is formed at the exhaust port, which causes the float to rise and close the main exhaust port. The gas in the pipeline cannot be completely discharged, and there are hidden dangers such as pipe burst affecting normal water supply and causing inaccurate flow meter measurement. There is also a full-pressure exhaust valve, but it has an external bypass pipeline, which will lose its function once the bypass pipeline is damaged. Summary of the invention

[0003] Based on the above problems, the purpose of the present invention is to provide a full-pressure high-speed exhaust valve, which can achieve both large-scale exhaust and continuous trace exhaust during the entire process of pipeline water filling, and does not require a bypass control pipeline.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A full-pressure high-speed exhaust valve, comprising:

[0006] Valve body;

[0007] A valve cover connected to the valve body, the valve cover and the valve body forming a first chamber, and the valve cover is provided with a first exhaust port communicating with the outside;

[0008] A gland connected to the valve cover, the gland and the valve cover form a second chamber, a guide sleeve is arranged inside the gland, and a second exhaust port communicating with the outside is arranged on the gland;

[0009] A switching assembly, comprising a hollow rod, a sealing plate and a diaphragm, wherein the sealing plate is arranged in the first chamber and used to block the first exhaust port, the diaphragm is arranged in the second chamber and divides the second chamber into an upper chamber and a lower chamber connected to the outside, the hollow rod is slidably arranged on the valve cover, one end of the hollow rod is connected to the sealing plate, and the other end is connected to the diaphragm, and the end of the hollow rod extending into the first chamber is provided with a third exhaust port connected to the upper chamber;

[0010] A trigger assembly includes a connected float and a trigger rod, wherein the float is disposed in the first chamber, the trigger rod movably passes through the hollow rod, and is slidably connected to the guide sleeve, the float can float up to block the third exhaust port, and drive the trigger rod to slide in the guide sleeve to connect the upper chamber and the second exhaust port.

[0011] As a preferred embodiment of the full-pressure high-speed exhaust valve of the present invention, the guide sleeve is provided with a first channel, a center hole and a second channel, one end of the first channel is connected to the upper chamber, the other end of the first channel is connected to the center hole, one end of the second channel is connected to the center hole, the other end of the second channel is connected to the second exhaust port, the trigger rod moves through the center hole, and a conducting groove is provided on the trigger rod. When the trigger rod slides to a preset position in the center hole, the conducting groove can conduct the first channel and the second channel to conduct the upper chamber and the second exhaust port.

[0012] As a preferred embodiment of the full-pressure high-speed exhaust valve of the present invention, the first channel includes a first axial hole and a first radial hole that are connected to each other, the second channel includes a second radial hole and a second axial hole that are connected to each other, the first axial hole is connected to the upper chamber, the first radial hole and the second radial hole are relatively opened on the side wall of the center hole, and the second axial hole is connected to the second exhaust port.

[0013] As a preferred embodiment of the full-pressure high-speed exhaust valve of the present invention, the valve cover is provided with a third chamber, the first exhaust port communicates with the first chamber and the third chamber, and the third chamber is communicated with the outside.

[0014] As a preferred solution of the full-pressure high-speed exhaust valve of the present invention, an upper pressure plate and a lower pressure plate are provided on the hollow rod, and the diaphragm is sandwiched between the upper pressure plate and the lower pressure plate.

[0015] As a preferred solution of the full-pressure high-speed exhaust valve of the present invention, an annular rubber ring is provided on the side of the sealing plate facing the first exhaust port.

[0016] As a preferred solution of the full-pressure high-speed exhaust valve of the present invention, a sealing portion is provided on the float, and a sealing ring is provided between the sealing portion and the third exhaust port.

[0017] As a preferred solution of the full-pressure high-speed exhaust valve of the present invention, a bracket is provided in the valve body, and the float can be in contact with the bracket.

[0018] As a preferred solution of the full-pressure high-speed exhaust valve of the present invention, an inlet is provided on the valve body, the inlet is communicated with the first chamber, and a filter cover is provided between the inlet and the first chamber.

[0019] As a preferred solution of the full-pressure high-speed exhaust valve of the present invention, a drain port and a plug are provided on the valve body, and the plug is used to seal the drain port.

[0020] The beneficial effects of the present invention are:

[0021] The full-pressure high-speed exhaust valve provided by the present invention has a disengaged state between the sealing plate and the first exhaust port during the water filling stage of the pipeline, and the floating body sinks due to its own gravity to be disengaged from the third exhaust port, and the gas in the pipeline is squeezed into the first chamber by the water, and most of the gas is discharged from the first exhaust port, and a small amount of gas enters the upper chamber through the third exhaust port. Due to the clearance fit between the guide sleeve and the trigger rod, only a trace amount of gas overflows from the upper chamber. As the gas in the upper chamber increases, the diaphragm drives the hollow rod to slide downward under the action of the air pressure of the gas in the upper chamber, so that the sealing plate keeps the first exhaust port open, ensuring that a large amount of gas is discharged through the first exhaust port during the water filling stage of the pipeline, avoiding the situation that a pipe burst affects the normal water supply and the flow meter is inaccurate. When the gas in the pipeline is exhausted, the water in the pipeline gradually enters the first chamber, and the floating body floats up to block the third exhaust port under the action of the buoyancy of the water, and drives the trigger rod to slide in the guide sleeve to conduct the upper chamber and the second exhaust port, and the upper chamber The gas is discharged through the second exhaust port, and the air pressure applied to the diaphragm becomes smaller. At the same time, the sealing plate moves upward to block the first exhaust port under the buoyancy of the water in the first chamber and the air pressure of the gas, and pushes the diaphragm through the hollow rod to discharge the gas from the upper chamber through the second exhaust port; as the gas in the water gradually precipitates, the gas gradually gathers at the top of the first chamber, and the liquid level of the water in the first chamber gradually decreases. When the liquid level of the water in the first chamber drops to the point where the buoyancy of the float is less than its own gravity, the float sinks to separate from the third exhaust port, and a small amount of air at the top of the first chamber enters the upper chamber through the third exhaust port and is discharged through the second exhaust port. After the gas is discharged, the liquid level of the water in the first chamber rises, and the float floats again under the buoyancy of the water to block the third exhaust port, and this cycle repeats until the excess gas in the pipeline is exhausted, thereby achieving both large-scale exhaust and continuous trace exhaust during the entire process of filling the pipeline with water, and no bypass control pipeline is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0023] Figure 1 1 is a schematic structural diagram of a full-pressure high-speed exhaust valve (when both the first exhaust port and the third exhaust port are open) provided in a specific embodiment of the present invention;

[0024] Figure 2 1 is a schematic structural diagram of a full-pressure high-speed exhaust valve (when both the first exhaust port and the third exhaust port are closed) provided in a specific embodiment of the present invention;

[0025] Figure 31 is a schematic structural diagram of a full-pressure high-speed exhaust valve (when the first exhaust port is closed and the third exhaust port is opened) provided in a specific embodiment of the present invention;

[0026] Figure 4 It is a structural schematic diagram of a guide sleeve in a full-pressure high-speed exhaust valve provided in a specific embodiment of the present invention.

[0027] In the figure:

[0028] 1-valve body; 2-valve cover; 3-pressure cover; 4-switching assembly; 5-trigger assembly;

[0029] 11- bracket; 12- inlet; 13- filter cover; 14- plug;

[0030] 21-first chamber; 22-first exhaust port; 23-third chamber;

[0031] 31-second chamber; 32-guide sleeve; 33-second exhaust port;

[0032] 311-upper chamber; 312-lower chamber;

[0033] 321-first channel; 3211-first axial hole; 3212-first radial hole; 322-center hole; 323-first

[0034] Second channel; 3231 - second radial hole; 3232 - second axial hole;

[0035] 41-hollow rod; 411-third exhaust port; 412-sealing ring; 42-sealing plate; 421-annular rubber ring;

[0036] 43-diaphragm; 44-upper pressure plate; 45-lower pressure plate; 46-locking nut; 47-mounting seat;

[0037] 51 - floating body; 511 - blocking part; 52 - trigger rod; 521 - conducting groove. DETAILED DESCRIPTION

[0038] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] like Figure 1-Figure 4 As shown, this embodiment provides a full-pressure high-speed exhaust valve, which includes a valve body 1, a valve cover 2, a gland 3, a switching assembly 4 and a trigger assembly 5. The valve cover 2 is connected to the valve body 1, the valve cover 2 and the valve body 1 form a first chamber 21, and the valve cover 2 is provided with a first exhaust port 22 communicating with the outside. The gland 3 is connected to the valve cover 2, the gland 3 and the valve cover 2 form a second chamber 31, a guide sleeve 32 is provided in the gland 3, and a second exhaust port 33 communicating with the outside is provided on the gland 3. The switching assembly 4 includes a hollow rod 41, a sealing plate 42 and a diaphragm 43. The sealing plate 42 is arranged in the first chamber 21 and is used to seal the first exhaust port 22. The diaphragm 43 is arranged in the second chamber 31 and divides the second chamber 31 into an upper chamber 311 and a lower chamber 312 connected to the outside. The hollow rod 41 is slidably arranged on the valve cover 2. One end of the hollow rod 41 is connected to the sealing plate 42, and the other end is connected to the diaphragm 43. The end of the hollow rod 41 extending into the first chamber 21 is provided with a third exhaust port 411 connected to the upper chamber 311. The trigger assembly 5 includes a connected float 51 and a trigger rod 52. The float 51 is arranged in the first chamber 21. The trigger rod 52 movably passes through the hollow rod 41 and is slidably connected to the guide sleeve 32. The float 51 can float up to block the third exhaust port 411 and drive the trigger rod 52 to slide in the guide sleeve 32 to connect the upper chamber 311 and the second exhaust port 33.

[0042] like Figure 1As shown, during the water filling stage of the pipeline, the sealing plate 42 is in a disengaged state from the first exhaust port 22, and the float 51 sinks due to its own gravity to be disengaged from the third exhaust port 411, and the gas in the pipeline is squeezed into the first chamber 21 by the water, and most of the gas is discharged from the first exhaust port 22, and a small amount of gas enters the upper chamber 311 through the third exhaust port 411. Due to the clearance fit between the guide sleeve 32 and the trigger rod 52, only a small amount of gas overflows from the upper chamber 311. As the gas in the upper chamber 311 increases, the diaphragm 43 drives the hollow rod 41 to slide downward under the action of the gas pressure in the upper chamber 311, so that the sealing plate 42 keeps the first exhaust port 22 open, ensuring that a large amount of gas is discharged through the first exhaust port 22 during the water filling stage of the pipeline, thereby avoiding pipe bursts that affect normal water supply and flow meter inaccuracy.

[0043] like Figure 2 As shown, after the gas in the pipeline is exhausted, the water in the pipeline gradually enters the first chamber 21, and the float 51 floats up to block the third exhaust port 411 under the buoyancy of the water, and drives the trigger rod 52 to slide in the guide sleeve 32 to connect the upper chamber 311 and the second exhaust port 33. The gas in the upper chamber 311 is discharged through the second exhaust port 33, and the air pressure applied to the diaphragm 43 becomes smaller. At the same time, the sealing plate 42 moves upward to block the first exhaust port 22 under the buoyancy of the water in the first chamber 21 and the air pressure of the gas, and pushes the diaphragm 43 through the hollow rod 41 to discharge the gas from the upper chamber 311 through the second exhaust port 33.

[0044] like Figure 3 As shown, as the gas in the water gradually precipitates, the gas gradually gathers at the top of the first chamber 21, and the liquid level of the water in the first chamber 21 gradually decreases. When the liquid level of the water in the first chamber 21 drops to the point where the buoyancy of the float 51 is less than its own gravity, the float 51 sinks to separate from the third exhaust port 411, and a small amount of air at the top of the first chamber 21 enters the upper chamber 311 through the third exhaust port 411 and is discharged through the second exhaust port 33. After the gas is discharged, the liquid level of the water in the first chamber 21 rises, and the float 51 floats again under the buoyancy of the water to block the third exhaust port 411, and this cycle repeats until the excess gas in the pipeline is exhausted, thereby achieving both large-scale exhaust and continuous trace exhaust during the entire process of filling the pipeline with water, and no bypass control pipeline is required.

[0045] To facilitate the selective connection between the upper chamber 311 and the second exhaust port 33, optionally, a first channel 321, a center hole 322 and a second channel 323 are provided on the guide sleeve 32, one end of the first channel 321 is connected to the upper chamber 311, the other end of the first channel 321 is connected to the center hole 322, one end of the second channel 323 is connected to the center hole 322, and the other end of the second channel 323 is connected to the second exhaust port 33, the trigger rod 52 moves through the center hole 322, and a conducting groove 521 is provided on the trigger rod 52, when the trigger rod 52 slides to a preset position in the center hole 322, the conducting groove 521 can connect the first channel 321 and the second channel 323, so as to connect the upper chamber 311 and the second exhaust port 33.

[0046] In this embodiment, for the convenience of processing, Figure 4 As shown, the first channel 321 includes a first axial hole 3211 and a first radial hole 3212 that are connected, and the second channel 323 includes a second radial hole 3231 and a second axial hole 3232 that are connected. The first axial hole 3211 is connected to the upper chamber 311, and the first radial hole 3212 and the second radial hole 3231 are relatively opened on the side wall of the center hole 322, and the second axial hole 3232 is connected to the second exhaust port 33. The first axial hole 3211 and the second axial hole 3232 are opened along the axial direction of the guide sleeve 32, and the first radial hole 3212 and the second radial hole 3231 are opened along the radial direction of the guide sleeve 32. To facilitate the buffering of the airflow, the valve cover 2 is optionally provided with a third chamber 23, the first exhaust port 22 is connected to the first chamber 21 and the third chamber 23, and the third chamber 23 is connected to the outside.

[0047] In this embodiment, an upper pressing plate 44 and a lower pressing plate 45 are provided on the hollow rod 41, and the diaphragm 43 is sandwiched between the upper pressing plate 44 and the lower pressing plate 45. The diaphragm 43 is pressed by the upper pressing plate 44 and the lower pressing plate 45 to prevent the diaphragm 43 from being damaged when moving up and down. In this embodiment, the area of ​​the upper pressing plate 44 is larger than the area of ​​the sealing plate 42. When the air pressure above the upper pressing plate 44 is consistent with the air pressure below the sealing plate 42, since the area of ​​the upper pressing plate 44 is larger than the area of ​​the sealing plate 42, the air pressure received by the upper pressing plate 44 is greater than the air pressure received by the sealing plate 42, thereby driving the hollow rod 41 to slide downward, so that the sealing plate 42 remains in the state of opening the first exhaust port 22. A locking nut 46 is provided on the hollow rod 41 for locking the upper pressing plate 44. In order to ensure the sealing performance of the sealing plate 42, optionally, an annular rubber ring 421 is provided on the side of the sealing plate 42 facing the first exhaust port 22.

[0048] In this embodiment, a plugging portion 511 is provided on the float 51, and a sealing ring 412 is provided between the plugging portion 511 and the third exhaust port 411. The float 51 is in the shape of a long waist sphere, which is convenient for floating under the buoyancy of water. When the float 51 floats, the plugging portion 511 abuts against the sealing ring 412 at the third exhaust port 411 to block the third exhaust port 411. A mounting seat 47 is provided on the hollow rod 41, and the sealing ring 412 is installed on the mounting seat 47. To facilitate supporting the float 51, optionally, a bracket 11 is provided in the valve body 1, and the float 51 can abut against the bracket 11.

[0049] In this embodiment, the valve body 1 is provided with an inlet 12, which is in communication with the first chamber 21, and a filter cover 13 is provided between the inlet 12 and the first chamber 21. Gas or water passes into the first chamber 21 through the inlet 12 of the valve body 1, and impurities are filtered out through the filter cover 13 to prevent the impurities from clogging or damaging the internal structure of the valve body 1. To facilitate detection or pressure relief, the valve body 1 is optionally provided with a drain port and a plug 14, and the plug 14 is used to block the drain port.

[0050] The full-pressure high-speed exhaust valve provided in this embodiment has the following working process: Figure 1 As shown, during the water filling stage of the pipeline, the sealing plate 42 is separated from the first exhaust port 22, and the float 51 sinks due to its own gravity until it is separated from the third exhaust port 411. The gas in the pipeline is squeezed into the first chamber 21 by the water, and most of the gas is discharged from the first exhaust port 22, and a small amount of gas enters the upper chamber 311 through the third exhaust port 411. Due to the clearance fit between the guide sleeve 32 and the trigger rod 52, only a small amount of gas overflows from the upper chamber 311. As the gas in the upper chamber 311 increases, the diaphragm 43 drives the hollow rod 41 to slide downward under the action of the gas pressure in the upper chamber 311, so that the sealing plate 42 keeps the first exhaust port 22 open, ensuring that a large amount of gas is discharged through the first exhaust port 22 during the water filling stage of the pipeline, avoiding pipe bursts that affect normal water supply and flow meter inaccuracy. Figure 2 As shown, when the gas in the pipeline is exhausted, the water in the pipeline gradually enters the first chamber 21, and the float 51 floats up to block the third exhaust port 411 under the buoyancy of the water, and drives the trigger rod 52 to slide in the guide sleeve 32 to connect the upper chamber 311 and the second exhaust port 33. The gas in the upper chamber 311 is discharged through the second exhaust port 33, and the air pressure applied to the diaphragm 43 becomes smaller. At the same time, the sealing plate 42 moves upward to block the first exhaust port 22 under the buoyancy of the water in the first chamber 21 and the air pressure of the gas, and pushes the diaphragm 43 through the hollow rod 41 to discharge the gas from the upper chamber 311 through the second exhaust port 33. Figure 3As shown, as the gas in the water gradually precipitates, the gas gradually gathers at the top of the first chamber 21, and the liquid level of the water in the first chamber 21 gradually decreases. When the liquid level of the water in the first chamber 21 drops to the point where the buoyancy of the float 51 is less than its own gravity, the float 51 sinks to separate from the third exhaust port 411, and a small amount of air at the top of the first chamber 21 enters the upper chamber 311 through the third exhaust port 411 and is discharged through the second exhaust port 33. After the gas is discharged, the liquid level of the water in the first chamber 21 rises, and the float 51 floats again under the buoyancy of the water to block the third exhaust port 411, and this cycle repeats until the excess gas in the pipeline is exhausted, thereby achieving both large-scale exhaust and continuous trace exhaust during the entire process of filling the pipeline with water, and no bypass control pipeline is required.

[0051] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A full-pressure high-speed exhaust valve, characterized in that: include: Valve body (1); A valve cover (2) connected to the valve body (1), the valve cover (2) and the valve body (1) forming a first chamber (21), and the valve cover (2) is provided with a first exhaust port (22) communicating with the outside; A gland (3) connected to the valve cover (2), the gland (3) and the valve cover (2) forming a second chamber (31), a guide sleeve (32) being arranged inside the gland (3), and a second exhaust port (33) communicating with the outside being arranged on the gland (3); A switching assembly (4), comprising a hollow rod (41), a sealing plate (42) and a diaphragm (43); the sealing plate (42) is arranged in the first chamber (21) and is used to block the first exhaust port (22); the diaphragm (43) is arranged in the second chamber (31) and divides the second chamber (31) into an upper chamber (311) and a lower chamber (312) communicating with the outside; the hollow rod (41) is slidably arranged on the valve cover (2); one end of the hollow rod (41) is connected to the sealing plate (42), and the other end is connected to the diaphragm (43); and the end of the hollow rod (41) extending into the first chamber (21) is provided with a third exhaust port (411) communicating with the upper chamber (311); A trigger assembly (5), comprising a floating body (51) and a trigger rod (52) connected to each other, wherein the floating body (51) is arranged in the first chamber (21), the trigger rod (52) movably penetrates the hollow rod (41) and is slidably connected to the guide sleeve (32), the floating body (51) can float up to block the third exhaust port (411), and drive the trigger rod (52) to slide in the guide sleeve (32) to connect the upper chamber (311) and the second exhaust port (33); The guide sleeve (32) is provided with a first channel (321), a center hole (322) and a second channel (323); one end of the first channel (321) is communicated with the upper chamber (311); the other end of the first channel (321) is communicated with the center hole (322); one end of the second channel (323) is communicated with the center hole (322); the other end of the second channel (323) is communicated with the second exhaust port (33); the trigger rod (52) movably passes through the center hole (322); the trigger rod (52) is provided with a conducting groove (521); when the trigger rod (52) slides in the center hole (322) to a preset position, the conducting groove (521) can conduct the first channel (321) and the second channel (323) to conduct the upper chamber (311) and the second exhaust port (33); An annular rubber ring (421) is provided on one side of the sealing plate (42) facing the first exhaust port (22).

2. The full-pressure high-speed exhaust valve according to claim 1, characterized in that: The first channel (321) includes a first axial hole (3211) and a first radial hole (3212) which are connected to each other, and the second channel (323) includes a second radial hole (3231) and a second axial hole (3232) which are connected to each other, the first axial hole (3211) is connected to the upper chamber (311), the first radial hole (3212) and the second radial hole (3231) are relatively opened on the side wall of the center hole (322), and the second axial hole (3232) is connected to the second exhaust port (33).

3. The full-pressure high-speed exhaust valve according to claim 1, characterized in that: The valve cover (2) is provided with a third chamber (23), the first exhaust port (22) is in communication with the first chamber (21) and the third chamber (23), and the third chamber (23) is in communication with the outside.

4. The full-pressure high-speed exhaust valve according to claim 1, characterized in that: An upper pressing plate (44) and a lower pressing plate (45) are provided on the hollow rod (41), and the diaphragm (43) is sandwiched between the upper pressing plate (44) and the lower pressing plate (45).

5. The full-pressure high-speed exhaust valve according to claim 1, characterized in that: The floating body (51) is provided with a blocking portion (511), and a sealing ring (412) is provided between the blocking portion (511) and the third exhaust port (411).

6. The full-pressure high-speed exhaust valve according to claim 1, characterized in that: A bracket (11) is arranged inside the valve body (1), and the float (51) can be in contact with the bracket (11).

7. The full-pressure high-speed exhaust valve according to claim 1, characterized in that: The valve body (1) is provided with an inlet (12), the inlet (12) is in communication with the first chamber (21), and a filter cover (13) is provided between the inlet (12) and the first chamber (21).

8. The full-pressure high-speed exhaust valve according to any one of claims 1 to 7, characterized in that: The valve body (1) is provided with a drain port and a plug (14), and the plug (14) is used to seal the drain port.

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