Vertical exhaust valve

Abstract

The utility model belongs to the technical field of exhaust valves, and discloses a vertical exhaust valve. According to the vertical exhaust valve, when the pressure of gas in the valve cavity is larger than the buoyancy of water in the valve cavity, the buoy in the valve cavity can fall down to drive the valve needle to move downwards, at the moment, the elastic piece is stretched in the vertical direction, the air inlet of the exhaust channel is opened, and the gas is continuously exhausted into the exhaust channel and exhausted; when the gas pressure in the valve cavity is smaller than the buoyancy of water in the valve cavity, the buoy ascends to drive the valve needle to move upwards, the exhaust channel is closed, and the automatic exhaust effect on a pipeline system is achieved. According to the vertical exhaust valve, the exhaust assembly arranged in the vertical direction is adopted, when the floating cylinder moves up and down, the floating cylinder directly stretches or compresses the elastic piece through the valve needle, so that the exhaust channel is opened or closed, it can be ensured that a larger space is formed between the valve needle and the valve seat during exhaust through the design, and gas can rapidly enter the exhaust channel and be exhausted; the exhaust speed and efficiency are improved, and the safety of a pipeline system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust valves, in particular to a vertical exhaust valve. Background Art

[0002] The exhaust valve is usually installed at the highest point of the pipeline system. Its main principle is that when the pipeline system is filled with water, the gas in the water will continuously escape and gather at the highest point due to temperature and pressure changes. When the gas pressure is greater than the buoyancy of the water in the valve cavity, the float inside the exhaust valve will fall and drive the valve needle to move downward, the valve port will open, and the gas will be continuously discharged; when the gas pressure is less than the buoyancy of the water in the valve cavity, the float will rise and drive the valve needle to move upward, the valve port will close, and the pipeline system will be automatically exhausted.

[0003] At present, when the existing exhaust valve is applied to the pipeline system, the exhaust components of the exhaust valve are all arranged horizontally on the valve cover. When the float moves up and down, the float drives the spring to bend in the vertical direction through the valve needle to open the air inlet of the exhaust channel. The gas in the valve cavity enters the exhaust channel through the air inlet of the exhaust channel and is discharged. This way of opening the exhaust channel can only form a narrow gap between the valve needle and the valve seat. The gas in the valve cavity gradually enters the exhaust channel through the narrow gap and is discharged. The exhaust speed is slow and the exhaust efficiency is low. When the float in the exhaust valve is subjected to a large gas flow rate or a large pressure difference in the pipeline system, if the pressure in the pipeline system cannot be discharged in time, it may cause safety risks such as pipeline system bursting, affecting the safety of the pipeline system.

[0004] Therefore, a vertical exhaust valve is urgently needed to solve the problems in the prior art. Utility Model Content

[0005] The utility model aims to provide a vertical exhaust valve, which improves exhaust speed and efficiency and improves the safety of the pipeline system.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A vertical exhaust valve comprises a valve cover, a valve body, an exhaust assembly and a float, wherein the valve cover is mounted on the valve body, and the internal spaces of the valve cover and the valve body form a valve cavity, the exhaust assembly comprises a valve seat, a valve needle and an elastic member, the float, the valve needle and the elastic member are all mounted in the valve cavity, the valve seat is communicated with the outside, one end of the valve seat extends into the valve cavity and forms an extension end, the exhaust assembly is arranged in the valve cavity along a vertical direction, the upper end of the elastic member is connected to the extension end, the lower end of the elastic member is connected to the valve needle, and the valve needle is fixedly connected to the float.

[0008] Optionally, the elastic member is a spring, the upper end of the spring is sleeved on the extending end of the valve seat, and the lower end of the spring is sleeved on the valve needle.

[0009] Optionally, the float includes an upper float section, a middle float section and a lower float section connected in sequence, the upper end of the valve needle is connected to the elastic member; the lower end of the valve needle is connected to the upper float section, the middle float section of the float forms a first accommodating cavity, the lower float section of the float is provided with a first through hole, and the first accommodating cavity is connected to the first through hole.

[0010] Optionally, the upper buoy section includes a receiving chamber for receiving the exhaust assembly.

[0011] Optionally, the accommodating cavity includes a limiting hole at the upper end and a blind hole at the lower end, and the top wall of the valve cover is provided with a limiting protrusion, which can be inserted into the limiting hole to limit the radial displacement of the float along the valve cavity, the valve seat is passed through the limiting protrusion, and the valve needle is located in the blind hole and fixedly connected to the float.

[0012] Optionally, the longitudinal section of the limiting protrusion is a first inverted trapezoid, the longitudinal section of the limiting hole is a second inverted trapezoid, and the slope of the side of the second inverted trapezoid is greater than the slope of the side of the first inverted trapezoid.

[0013] Optionally, a guide groove is provided on the outer peripheral wall of the float, and the guide groove is connected to the first accommodating cavity, and the guide groove is connected to the accommodating cavity.

[0014] Optionally, a second through hole is provided at the bottom end of the valve body, the first through hole is directly opposite to the second through hole, and an inner diameter of the first through hole is larger than an inner diameter of the second through hole.

[0015] Optionally, the first through hole is an inverted tapered hole.

[0016] Optionally, when the float contacts the bottom wall of the valve cavity, the elastic member is stretched to a length that is less than or equal to a limit stretching length of the elastic member.

[0017] Beneficial effects:

[0018] The vertical exhaust valve provided by the utility model, when the gas pressure in the valve cavity is greater than the buoyancy of the water in the valve cavity, the float in the valve cavity will fall and drive the valve needle to move downward, at this time the elastic member is stretched in the vertical direction, the air inlet of the exhaust channel is opened, and the gas continuously enters the exhaust channel and is discharged; when the gas pressure in the valve cavity is less than the buoyancy of the water in the valve cavity, the float rises and drives the valve needle to move upward, the exhaust channel is closed, and the pipeline system is automatically exhausted. The vertical exhaust valve adopts an exhaust component arranged in the vertical direction. When the float moves up and down, the float directly stretches or compresses the elastic member through the valve needle, thereby opening or closing the exhaust channel. Such a design can ensure that a larger space is formed between the valve needle and the valve seat during exhaust, which is conducive to the rapid entry of gas into the exhaust channel and discharge, thereby improving the exhaust speed and efficiency and improving the safety of the pipeline system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the vertical exhaust valve provided by the utility model;

[0020] Figure 2 It is a structural schematic diagram of the vertical exhaust valve provided by the utility model when the valve body is not installed.

[0021] Figure 3 yes Figure 1 Cross-sectional view at AA in the middle.

[0022] In the figure:

[0023] 100, valve body; 110, second through hole;

[0024] 200, valve cover; 210, limiting convex portion; 211, limiting surface; 220, first sealing ring;

[0025] 300, exhaust assembly; 310, valve seat; 311, exhaust channel; 312, second sealing ring; 313, third sealing ring; 320, valve needle; 321, mounting groove; 330, sealing plug; 340, elastic member; 350, open ring; 360, exhaust valve cap;

[0026] 400, float; 410, first through hole; 420, first accommodating chamber; 430, guide groove; 440, limiting hole; 450, blind hole; 451, third through hole. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] This embodiment provides a vertical exhaust valve, such as Figure 1-Figure 3As shown, the vertical exhaust valve includes a valve body 100, a valve cover 200, an exhaust assembly 300 and a float 400. The valve cover 200 is installed on the valve body 100. The internal spaces of the valve cover 200 and the valve body 100 form a valve cavity. The exhaust assembly 300 includes a valve seat 310, a valve needle 320 and an elastic member 340. The float 400, the valve needle 320 and the elastic member 340 are all installed in the valve cavity. The valve seat 310 is installed on the valve cover 200 and communicates with the outside through an exhaust channel 311 in the valve seat 310. One end of the valve seat 310 extends into the valve cavity and forms an extending end. The exhaust assembly 300 is arranged in the valve cavity along the vertical direction. The elastic member The upper end of 340 is connected to the insertion end, and the lower end of the elastic member 340 is connected to the valve needle 320, and the valve needle 320 is fixedly connected to the float 400; when the gas pressure in the valve cavity is greater than the buoyancy of the water in the valve cavity, the float 400 in the valve cavity will fall and drive the valve needle 320 to move downward. At this time, the elastic member 340 is stretched in the vertical direction, and the air inlet of the exhaust channel 311 is opened, and the gas is continuously discharged into the exhaust channel 311 and discharged; when the gas pressure in the valve cavity is less than the buoyancy of the water in the valve cavity, the float 400 rises and drives the valve needle 320 to move upward, and the exhaust channel 311 is closed, which plays a role in automatic exhaust of the pipeline system.

[0032] The vertical exhaust valve adopts an exhaust assembly 300 arranged in a vertical direction. When the float 400 moves up and down, the float 400 directly stretches or compresses the elastic member 340 through the valve needle 320, thereby opening or closing the exhaust channel 311. This design can ensure that a larger space is formed between the valve needle 320 and the valve seat 310, which is conducive to the rapid discharge of gas, improves the exhaust speed and efficiency, and improves the safety of the pipeline system.

[0033] Optionally, the elastic member 340 is a spring, the upper end of the spring is sleeved on the extension end of the valve seat 310, and the lower end of the spring is sleeved on the valve needle 320. The spring has low cost and good elasticity, ensuring that the opening and closing of the exhaust valve are more reliable, simplifying the structure of the exhaust component 300 and reducing the manufacturing cost of the exhaust component 300.

[0034] Optionally, a first thread groove is provided on the outer circumferential surface of the extending end of the valve seat 310, and a second thread groove is provided on the outer circumferential surface of the top of the valve needle 320. One end of the elastic member 340 is embedded in the first thread groove, and the other end is embedded in the second thread groove, thereby ensuring that the two ends of the elastic member 340 are stably connected to the valve seat 310 and the valve needle 320 respectively, thereby improving the reliability of the exhaust assembly 300.

[0035] Optionally, a sealing plug 330 is provided on the top of the valve needle 320, and the valve needle 320 blocks the air inlet of the exhaust channel 311 through the sealing plug 330. Specifically, a mounting groove 321 is provided on the top of the valve needle 320, and a part of the sealing plug 330 is embedded in the mounting groove 321, which can ensure that the position of the sealing plug 330 is stable, so as to ensure that the air inlet of the exhaust channel 311 is accurately closed.

[0036] Optionally, the float 400 includes an upper float section, a middle float section and a lower float section connected in sequence, the upper end of the valve needle 320 is connected to the elastic member 340, the lower end of the valve needle 320 is fixed to the upper float section, the middle float section forms a first accommodating chamber 420, and the lower float section of the float 400 is provided with a first through hole 410, and the first accommodating chamber 420 is connected to the first through hole 410. In this embodiment, by setting the float 400 as a three-section structure of upper, middle and lower sections, when the gas in the pipeline system enters the valve cavity, the gas accumulates at the top of the valve cavity, and when the gas pressure is greater than the buoyancy of the water in the valve cavity, the gas pressure drives the float 400 to descend, and the float 400 drives the valve needle 320 to descend. At this time, the spring is stretched, and the air inlet of the exhaust channel 311 is opened. The gas in the valve cavity enters the exhaust channel 311 of the valve seat 310 through the first through hole 410 and the first accommodating cavity 420 to be discharged; when the gas pressure is less than the buoyancy of the water in the valve cavity, under the action of the tensile force of the elastic member 340, the valve needle 320 and the float 400 move upward, and the valve needle 320 blocks the air inlet of the exhaust channel 311, completing an exhaust process.

[0037] Optionally, the upper buoy section of the buoy 400 includes a accommodating cavity for accommodating the exhaust assembly 300, which can reduce the space occupied by the exhaust assembly 300 in the vertical direction, make the internal structure of the exhaust valve more compact, improve the space utilization inside the exhaust valve, reduce the volume of the exhaust valve, and improve the flexibility of the exhaust valve installation position.

[0038] Optionally, the accommodating cavity includes a limiting hole 440 at the upper end and a blind hole 450 at the lower end, the top wall of the valve cover 200 is provided with a limiting protrusion 210, the valve seat 310 is penetrated by the limiting protrusion 210, the limiting protrusion 210 can be inserted into the limiting hole 440 to limit the radial displacement of the float 400 along the valve cavity, and the valve needle 320 is located in the blind hole 450 and is fixedly connected to the float 400. Specifically, Figure 3 As shown, when the gas pressure in the valve cavity is less than the buoyancy of the water in the valve cavity, the top of the float 400 fits against the top wall of the valve cavity, and the limiting protrusion is inserted in the limiting hole 440 to prevent the float 400 from radially shifting along the valve cavity, thereby ensuring the accurate position of the float 400, thereby ensuring that the exhaust assembly 300 is accurately closed to avoid leakage of the exhaust valve.

[0039] Alternatively, if Figure 3As shown, the exhaust component 300 also includes an open ring 350, which is arranged in the first accommodating chamber 420. A third through hole 451 is provided on the bottom wall of the blind hole 450. At least part of the valve needle 320 is passed through the third through hole 451 and is coaxially fixed with the open ring 350. The open ring 350 and the valve needle 320 block the third through hole 451. The connection structure between the exhaust component 300 and the float 400 is simple, which ensures that when the air pressure in the valve cavity is greater than the exhaust pressure (the buoyancy of the water in the valve cavity), the float 400 can reliably pull the valve needle 320, thereby driving the sealing plug 330 to move downward to open the exhaust channel 311 for exhaust, and avoids the first accommodating chamber 420 and the blind hole 450 from communicating through the third through hole 451, thereby preventing water leakage during the exhaust process and improving the reliability of the vertical exhaust valve.

[0040] Optionally, a guide groove 430 is provided on the outer peripheral wall of the float 400, the first through hole 410 communicates with the valve cavity and the first accommodating cavity 420, the guide groove 430 communicates with the first accommodating cavity 420, and the guide groove 430 communicates with the accommodating cavity. When exhausting, the gas in the pipeline system enters the valve cavity through the first through hole 410, and then enters the exhaust channel 311 of the valve seat 310 from the first through hole 410, the first accommodating cavity 420, the guide groove 430, and the accommodating cavity in sequence and is discharged.

[0041] Alternatively, if Figure 2 As shown, a plurality of guide grooves 430 are provided at intervals along the circumferential direction of the buoy 400, which can effectively increase the gas flow rate and flow rate, and further improve the exhaust efficiency. In this embodiment, four guide grooves 430 are provided at intervals along the circumferential direction of the buoy 400, and the four guide grooves 430 are opposite to each other in the radial direction of the buoy 400 to ensure that the buoy 400 is more stable during the rising process, further increase the speed of gas flow, and effectively improve the exhaust efficiency.

[0042] Optionally, the longitudinal section of the limiting protrusion 210 is a first inverted trapezoid, the end of the limiting protrusion 210 away from the valve cover 200 is the first end, the end of the limiting protrusion 210 close to the valve cover 200 is the second end, and the diameter of the limiting protrusion 210 gradually increases from the first end of the limiting protrusion 210 to the second end of the limiting protrusion 210; the longitudinal section of the limiting hole 440 is a second inverted trapezoid, the end of the limiting hole 440 away from the valve cover 200 is the first end, and the end of the limiting hole 440 close to the valve cover is the second end. One end of 200 is the second end, and the diameter of the limiting hole 440 gradually increases along the first end of the limiting hole 440 toward the second end of the limiting hole 440; the slope of the second inverted trapezoidal side is greater than the slope of the first inverted trapezoidal side, so that there is a gap between the limiting hole 440 and the limiting protrusion 210, preventing the float 400 from being attracted to the limiting protrusion 210. At the same time, during the exhaust process, the gas rising from the guide groove 430 enters the exhaust channel 311 from the gap and is discharged.

[0043] Optionally, a second through hole 110 is provided at the bottom end of the valve body 100. The setting of the second through hole 110 can introduce the gas in the pipeline system into the valve cavity. The first through hole 410 is directly opposite to the second through hole 110, and the inner diameter of the first through hole 410 is larger than the inner diameter of the second through hole 110, so that when the gas enters the valve cavity from the second through hole 110, it will not directly generate a strong upward force on the float 400, thereby preventing the float 400 from jumping or floating due to excessive gas flow rate or excessive pressure difference, so that the vertical exhaust valve can exhaust smoothly, thereby improving the reliability and stability of the vertical exhaust valve.

[0044] Optionally, the first through hole 410 is an inverted cone hole, that is, the end of the first through hole 410 close to the second through hole 110 is the first end, and the end of the first through hole 410 away from the second through hole 110 is the second end, and the diameter of the first through hole 410 gradually increases from the first end of the first through hole 410 to the second end of the first through hole 410, and the diameter of the first end of the first through hole 410 is greater than the diameter of the second through hole 110, which can further optimize the gas flow path and gradually slow down the flow rate of the gas when entering the valve cavity, thereby reducing the direct impact force on the float 400, avoiding the floating or floating phenomenon of the float 400 due to excessive gas flow rate or excessive pressure difference, and improving the operating stability and reliability of the vertical exhaust valve.

[0045] Optionally, when the float 400 contacts the bottom wall of the valve chamber, the length by which the elastic member 340 is stretched is less than or equal to the ultimate stretching length of the elastic member 340. By limiting the stretching length of the elastic member 340, it is ensured that the float 400 does not generate excessive stress on the elastic member 340 when in the extreme position, thereby avoiding exhaust valve failure due to failure of the elastic member 340 and improving the reliability and safety of the exhaust valve.

[0046] Alternatively, if Figure 3 As shown, a first sealing ring 220 is provided at the connection between the valve cover 200 and the valve seat 310. The first sealing ring 220 can ensure the sealing of the connection between the valve cover 200 and the valve seat 310, which not only prevents the leakage of the internal medium of the vertical exhaust valve, but also effectively prevents external pollutants such as dust, moisture or other impurities from entering the exhaust valve, protects the internal parts of the vertical exhaust valve from pollution and corrosion, and prolongs the service life of the exhaust valve.

[0047] Optionally, a mounting hole is provided on the valve cover 200, and the valve seat 310 is inserted into the mounting hole and is sealed and connected to the valve cover 200. The mounting hole design on the valve cover 200 allows the valve seat 310 to be easily inserted into the mounting hole, thereby simplifying the installation process of the exhaust valve. Specifically, in this embodiment, the limiting protrusion 210 is located in the middle of the valve cover 200, and the mounting hole is provided on the limiting protrusion 210. When the valve seat 310 is installed on the mounting hole, the exhaust channel 311 is located in the middle of the vertical exhaust valve, which helps the airflow to be effectively guided when entering the exhaust channel 311, reduces the turbulence and resistance of the airflow, and improves the exhaust efficiency.

[0048] Optionally, a limiting surface 211 is provided on the limiting convex portion 210, and the limiting surface 211 can limit the installation position of the valve seat 310, which can ensure that the valve seat 310 is quickly installed in place, saving installation and debugging time. In this embodiment, a second sealing ring 312 is provided between the valve seat 310 and the limiting surface 211 to ensure a sealed connection between the valve seat 310 and the valve cover 200.

[0049] Furthermore, a sealing ring groove is provided at the portion of the valve seat 310 inserted into the mounting hole, and a third sealing ring 313 is provided in the sealing ring groove, which can further improve the sealing performance of the connection between the valve seat 310 and the valve cover 200 .

[0050] Optionally, the exhaust assembly 300 further includes an exhaust valve cap 360, which is covered at the air outlet of the exhaust channel 311. The exhaust valve cap 360 is provided with an exhaust hole, which can be connected to the air outlet of the exhaust channel 311. The exhaust hole on the exhaust valve cap 360 can control the exhaust flow rate, make the exhaust process more uniform and stable, avoid the impact of too fast or too slow exhaust on the system, and ensure the normal operation of the pipeline system. In addition, the design of the exhaust valve cap 360 can prevent the exhaust port from being blocked due to external reasons, ensuring that the exhaust channel 311 is always unobstructed.

[0051] Optionally, the exhaust valve cap 360 is threadedly connected to the valve seat 310. By adjusting the tightness of the connection between the exhaust valve cap 360 and the valve seat 310, the opening and closing degree of the exhaust hole can be controlled, thereby adjusting the exhaust speed.

[0052] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A vertical exhaust valve, comprising a valve cover (200), a valve body (100), an exhaust assembly (300) and a float (400), wherein the valve cover (200) is mounted on the valve body (100), the internal space of the valve cover (200) and the valve body (100) forms a valve cavity, the exhaust assembly (300) comprises a valve seat (310), a valve needle (320) and an elastic member (340), the float (400), the valve needle (320) and the elastic member (340) are all mounted in the valve cavity, the valve seat (310) is communicated with the outside, one end of the valve seat (310) extends into the valve cavity and forms an extending end, and is characterized in that: The exhaust assembly (300) is arranged in the valve cavity along the vertical direction, the upper end of the elastic member (340) is connected to the insertion end, the lower end of the elastic member (340) is connected to the valve needle (320), and the valve needle (320) is fixedly connected to the float (400).

2. The vertical exhaust valve according to claim 1, characterized in that: The elastic member (340) is a spring, the upper end of the spring is sleeved on the extending end of the valve seat (310), and the lower end of the spring is sleeved on the valve needle (320).

3. The vertical exhaust valve according to claim 1, characterized in that: The float (400) includes an upper float section, a middle float section and a lower float section which are connected in sequence, the upper end of the valve needle (320) is connected to the elastic member (340); the lower end of the valve needle (320) is connected to the upper float section, the middle float section of the float (400) forms a first accommodating cavity (420), and the lower float section of the float (400) is provided with a first through hole (410), and the first accommodating cavity (420) is connected to the first through hole (410).

4. The vertical exhaust valve according to claim 3, characterized in that: The upper buoy section comprises a receiving chamber for receiving the exhaust assembly (300).

5. The vertical exhaust valve according to claim 4, characterized in that: The accommodating cavity includes a limiting hole (440) at the upper end and a blind hole (450) at the lower end. The top wall of the valve cover (200) is provided with a limiting protrusion (210). The limiting protrusion (210) can be inserted into the limiting hole (440) to limit the radial displacement of the float (400) along the valve cavity. The valve seat (310) is penetrated by the limiting protrusion (210), and the valve needle (320) is located in the blind hole (450) and is fixedly connected to the float (400).

6. The vertical exhaust valve according to claim 5, characterized in that: The longitudinal section of the limiting protrusion (210) is in the shape of a first inverted trapezoid, and the longitudinal section of the limiting hole (440) is in the shape of a second inverted trapezoid, wherein the slope of the side of the second inverted trapezoid is greater than the slope of the side of the first inverted trapezoid.

7. The vertical exhaust valve according to claim 4, characterized in that: A guide groove (430) is provided on the outer peripheral wall of the buoy (400), and the guide groove (430) is connected to the first accommodating chamber (420), and the guide groove (430) is connected to the accommodating chamber.

8. The vertical exhaust valve according to claim 3, characterized in that: A second through hole (110) is provided at the bottom end of the valve body (100), the first through hole (410) is directly opposite to the second through hole (110), and the inner diameter of the first through hole (410) is greater than the inner diameter of the second through hole (110).

9. The vertical exhaust valve according to claim 3, characterized in that: The first through hole (410) is an inverted tapered hole.

10. The vertical exhaust valve according to claim 1, characterized in that: When the float (400) contacts the bottom wall of the valve chamber, the elastic member (340) is stretched to a length that is less than or equal to the ultimate stretching length of the elastic member (340).

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