Deflation valve with quick opening function

Abstract

The deflation valve with the quick opening function comprises a valve body and a main valve, the main valve is arranged in the valve body and is in sliding connection with the inner wall of the valve body, an inner column is arranged in the valve body, the lower end of the inner column penetrates into the main valve, the interior of the main valve is arranged to be an opening cavity, and the opening cavity is communicated with the valve body. A gap is reserved between the lower end of the inner column and the bottom of the opening cavity and used for opening the main valve, a spring is arranged between the lower end of the inner column and the main valve, the spring is mainly used for providing reset force to enable the main valve to be in an opening state, a control cavity is formed between the upper end of the main valve and the valve body, and a control opening is formed in the upper end of the valve body. The control port penetrates through the inner column and is communicated with the opening cavity; according to the structure, the control air source is adopted for control, rapid opening of the deflation valve is achieved through the one-way throttling exhaust valve, the opening time of the deflation valve is remarkably shortened, the function of adjusting the closing speed of the deflation valve is achieved, and the requirements for rapid opening and adjustable closing speed of the deflation valve are met.

Description

Technical Field

[0001] The utility model relates to the technical field of air release valves, in particular to an air release valve with a quick opening function. Background Art

[0002] The bleed valve is usually used to control the discharge of system gas, and is generally divided into two types: normally open and normally closed. Its working principle mainly relies on the opening and closing of the valve to regulate the flow of gas in the system. When the bleed valve is opened, the system gas can be discharged through the valve port; when the bleed valve is closed, the discharge of system gas is stopped.

[0003] In the engine system, the bleed valve is widely used to regulate the temperature and pressure of the system to ensure that the engine maintains the best power output under different working conditions and prevent damage caused by over-temperature or over-pressure. Therefore, the fast opening function has become a key performance indicator of advanced bleed valves.

[0004] The main factors affecting the opening speed of the bleed valve include the length and diameter of the control air path. For large engine systems, due to the long control air path, the opening time of a traditional bleed valve is usually in the range of 3 to 5 seconds. However, under certain special working conditions, the opening time of the bleed valve is required to be controlled within 0.1 to 0.2 seconds, which poses a challenge to the existing technology. The existing bleed valve is difficult to meet this requirement; Chinese patent application No. 202311343295.8 discloses a high-pressure charging and discharging valve with a new sealing structure. Although it can realize the charging and discharging functions, it is necessary to rotate the bleed rod to reset the spring and push the valve core to reset to achieve closing and opening, and automatic and rapid control cannot be achieved. Therefore, there is an urgent need for improved technology on the market to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a bleed valve with a quick opening function. The structure adopts a controlled air source control and realizes the quick opening of the bleed valve through a one-way throttling exhaust valve, so that its opening time is significantly shortened, and has the function of adjusting the closing speed of the bleed valve valve to meet the requirements of the bleed valve realizing quick opening and adjustable closing speed, which can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vent valve with a quick opening function, comprising a valve body and a main valve, the main valve being arranged inside the valve body and slidably connected to the inner wall of the valve body, an inner column being arranged inside the valve body, the lower end of the inner column passing through the main valve, the interior of the main valve being arranged as an opening cavity, a gap being left between the lower end of the inner column and the bottom of the opening cavity, the gap being used for opening the main valve, a spring being arranged between the lower end of the inner column and the main valve, the main function of the spring being to provide a reset force so that the main valve is in an open state, a control cavity being arranged between the upper end of the main valve and the valve body, a control port being arranged at the upper end of the valve body, the control port passing through the inner column and communicating with the opening cavity, a one-way throttling exhaust valve being connected to the control port, the one-way throttling exhaust valve being connected to a control gas source through a control gas path, as shown in the attached figure. Figure 1 As shown in the figure, when there is no control gas in the control chamber, the one-way throttle exhaust valve is in the open state, and the control gas in the control chamber is quickly discharged to the atmosphere through the one-way throttle exhaust valve without being discharged through the control gas path, so that the main valve is quickly opened, that is, the exhaust valve is in the open state; as shown in the attached figure Figure 3 The figure shows the closed state of the one-way throttle exhaust valve of the prior art. The one-way throttle exhaust valve is mainly composed of a housing, a throttle hole, an exhaust valve, a return spring, a waterproof and dustproof ring and an exhaust valve chamber. The function of the one-way throttle exhaust valve is: when the control gas is charged, the throttle hole on the exhaust valve can control the gas charging speed; when the gas in the exhaust valve chamber is discharged, the control gas can be directly discharged to the atmosphere through the exhaust port of the one-way throttle exhaust valve without being discharged through the control pipeline, which greatly shortens the exhaust time. The one-way throttle exhaust valve is a conventional technology and will not be introduced in detail here. Figure 4 The figure shows the open state of the one-way throttling exhaust valve in the prior art.

[0007] Furthermore, an inlet is provided at the center of the lower end of the valve body, a conical structure is provided at the lower end of the main valve, and the main valve abuts against the inlet to form a contact sealing structure with the inlet; Figure 2 As shown, when the control gas passes through the throttle hole inside the one-way throttling exhaust valve, the one-way throttling exhaust valve is in a closed state, and the control gas is filled into the control chamber to overcome the elastic force of the spring, thereby realizing the closing of the main valve of the exhaust valve, and its closing speed can be adjusted by the size of the throttle hole inside the one-way throttle exhaust valve.

[0008] Furthermore, a discharge chamber is arranged inside the valve body, and an outlet is arranged on the side of the valve body, and the outlet is communicated with the discharge chamber.

[0009] Furthermore, a groove is provided at the upper end of the main valve, and the groove and the valve body form a control chamber.

[0010] Furthermore, the inner column and the valve body are arranged as an integral structure, a gap is left between the inner column and the main valve, and the control chamber is connected with the opening chamber through the gap.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The structure adopts controlled air source control, and realizes the rapid opening of the bleed valve through the one-way throttling exhaust valve, which significantly shortens its opening time, and has the function of adjusting the closing speed of the bleed valve valve to meet the requirements of rapid opening and adjustable closing speed of the bleed valve.

[0013] 2. The lower end of the main valve adopts a conical structure to form a contact sealing structure with the inlet, ensuring the sealing performance in the closed state, effectively preventing gas leakage, and improving the safety and stability of the system; the inner column and the valve body are integrated into one design, and the control chamber and the opening chamber are connected through the gap, which simplifies the structure, reduces the manufacturing cost, and improves the reliability of the system.

[0014] 3. The utility model can be applied to the fields of engine systems and pneumatic systems that require rapid response, and has great advantages, especially in application environments with strict requirements on deflation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the opening structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the closing structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the closing structure of the existing one-way throttling exhaust valve;

[0018] Figure 4 It is a schematic diagram of the opening structure of the existing one-way throttling exhaust valve.

[0019] In the figure: 1 control port, 2 valve body, 3 control chamber, 4 spring, 5 main valve, 6 inlet, 7 main air path, 8 outlet, 9 one-way throttling exhaust valve, 10 control air path, 11 control air source, 12 opening chamber, 13 discharge chamber, 14 inner column, 15 shell, 16 throttle hole, 17 exhaust valve, 18 return spring, 19 waterproof and dustproof ring, 20 exhaust valve chamber. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] See also Figure 1-4 The utility model provides a technical solution: a deflation valve with a quick opening function, comprising a valve body 2 and a main valve 5, the main valve 5 is arranged inside the valve body 2, and is slidably connected to the inner wall of the valve body 2; an inner column 14 is arranged inside the valve body 2, the lower end of the inner column 14 passes through the main valve 5, the interior of the main valve 5 is arranged as an opening cavity 12, a gap is left between the lower end of the inner column 14 and the bottom of the opening cavity 12, and the gap is used for opening the main valve 5, a spring 4 is arranged between the lower end of the inner column 14 and the main valve 5, the main function of the spring 4 is to provide a reset force to keep the main valve 5 in an open state.

[0022] In another possible embodiment, a control chamber 3 is provided between the upper end of the main valve 5 and the valve body 2, a control port 1 is provided at the upper end of the valve body 2, the control port 1 passes through the inner column 14 and is communicated with the opening chamber 12, the control port 1 is connected to the control gas source 11 through the control gas circuit 10, and a one-way throttling exhaust valve 9 is provided on the control gas circuit 10; when there is no control gas in the control chamber 3, the one-way throttling exhaust valve 9 is in an open state, and the control gas in the control chamber 3 is quickly discharged to the atmosphere through the one-way throttling exhaust valve 9 without the need to be discharged through the control gas circuit 10, so that the main valve 5 is quickly opened, that is, the air release valve is in an open state.

[0023] In another possible implementation, an inlet 6 is provided at the center of the lower end of the valve body 2, a conical structure is provided at the lower end of the main valve 5, and the main valve 5 abuts against the inlet 6 to form a contact sealing structure with the inlet 6, thereby ensuring that no leakage occurs in the closed state.

[0024] In another possible implementation, a discharge chamber 13 is disposed inside the valve body 2 , and an outlet 8 is disposed on the side of the valve body 2 . The outlet 8 is connected to the discharge chamber 13 , so that the gas can be discharged smoothly.

[0025] In another possible implementation, a groove is provided at the upper end of the main valve 5 , and the groove and the valve body 2 form a control chamber 3 , thereby optimizing the action mode of controlling the airflow.

[0026] In another possible implementation, the inner column 14 and the valve body 2 are configured as an integral structure, a gap is left between the inner column 14 and the main valve 5, and the control chamber 3 is connected to the opening chamber 12 through the gap to ensure effective flow of the control gas.

[0027] Through the above implementation, the air release valve of the utility model can be opened quickly, and the control gas can be quickly released into the atmosphere through the one-way throttling exhaust valve 9, thereby significantly improving the air release speed and meeting the needs of different application scenarios for rapid response.

[0028] The basic principles, main features and advantages of the present invention are shown and described above. Without departing from the spirit and scope of the present invention, the present invention may also be subject to various changes and improvements, which are all within the scope of the present invention to be protected.

Claims

1. A vent valve with a quick opening function, comprising a valve body (2) and a main valve (5), characterized in that: The main valve (5) is arranged inside the valve body (2) and is slidably connected to the inner wall of the valve body (2). An inner column (14) is arranged inside the valve body (2). The lower end of the inner column (14) passes through the main valve (5). The interior of the main valve (5) is arranged to form an opening chamber (12). A gap is left between the lower end of the inner column (14) and the bottom of the opening chamber (12). A spring (4) is arranged between the lower end of the inner column (14) and the main valve (5). A control chamber (3) is arranged between the upper end of the main valve (5) and the valve body (2). A control port (1) is arranged at the upper end of the valve body (2). The control port (1) passes through the inner column (14) and is in communication with the opening chamber (12). A one-way throttling exhaust valve (9) is connected to the control port (1). The one-way throttling exhaust valve (9) is connected to a control air source (11) through a control air path (10).

2. The air release valve with quick opening function according to claim 1, characterized in that: An inlet (6) is provided at the center of the lower end of the valve body (2), a conical structure is provided at the lower end of the main valve (5), and the main valve (5) abuts against the inlet (6) to form a contact sealing structure with the inlet (6).

3. The air release valve with quick opening function according to claim 1, characterized in that: A discharge chamber (13) is provided inside the valve body (2), and an outlet (8) is provided on a side surface of the valve body (2), wherein the outlet (8) is communicated with the discharge chamber (13).

4. The air release valve with quick opening function according to claim 1, characterized in that: The upper end of the main valve (5) is provided with a groove, and the groove and the valve body (2) form a control chamber (3).

5. The air release valve with quick opening function according to claim 1, characterized in that: The inner column (14) and the valve body (2) are arranged to form an integral structure, a gap is left between the inner column (14) and the main valve (5), and the control chamber (3) is connected to the opening chamber (12) through the gap.

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