An adaptive high-frequency pulse valve

Abstract

This invention provides an adaptive high-frequency pulse valve, comprising a valve body and a valve stem movably disposed inside the valve body. The valve body has a lower valve chamber and an upper valve chamber on its two sides, connected by an air groove. One end of the valve stem is engaged in the air groove, such that when the valve stem end is sealed within the air groove, the lower and upper valve chambers are disconnected. A piston is disposed at the end of the valve stem away from the air groove, forming a first air chamber between the piston and the inside of the valve body. A first elastic element is connected between the side of the piston away from the first air chamber and the valve body. When the first air chamber is filled with air, the valve stem disengages from the air groove. This invention improves the response speed of the pulse valve.

Description

Technical Field

[0001] This invention relates to the field of pulse valves, and in particular to an adaptive high-frequency pulse valve. Background Technology

[0002] A pulse valve is a valve body that is controlled by a pilot valve such as an electromagnetic or pneumatic valve and can instantly open and close a high-pressure air source to generate a pulse.

[0003] Current pulse valves are commonly used for the automatic control of high-frequency switching of gaseous media such as coal gas and hydrogen. However, existing electromagnetic and pneumatic control methods are difficult to improve the response opening and closing speed of pulse valves, and it is also difficult to adaptively adjust the pulse switching frequency of valves based on pressure feedback. Summary of the Invention

[0004] The purpose of this invention is to provide an adaptive high-frequency pulse valve that improves the response speed of a pulse valve.

[0005] To solve the above-mentioned technical problems, the present invention provides an adaptive high-frequency pulse valve, including a valve body and a valve stem movably disposed inside the valve body. The valve body has a lower valve chamber and an upper valve chamber on both sides, which are connected by an air groove. One end of the valve stem is engaged in the air groove so that when the end of the valve stem is in the air groove to form a seal, the lower valve chamber and the upper valve chamber are disconnected. A piston is provided at the end of the valve stem away from the air groove so that a first air chamber is formed between the piston and the inside of the valve body. A first elastic element is connected between the side of the piston away from the first air chamber and the valve body. When the first air chamber is filled with air, the valve stem is disengaged from the air groove.

[0006] Furthermore, a push rod is movably disposed inside the valve body, and a second elastic element is connected between the push rod and the valve body. The push rod is matched with the valve stem so that when the valve stem moves away from the air groove, it pushes the push rod.

[0007] Furthermore, one end of the valve body has a first adjusting rod, the push rod is matched with the first adjusting rod, and there is an adjusting gap between the push rod and the first adjusting rod, the adjusting gap being used to limit the movement stroke of the valve rod.

[0008] Furthermore, a first air inlet is provided on the side of the valve body, and the first air inlet is connected to the first air chamber.

[0009] Furthermore, it also includes a proportional distribution valve, which has an air inlet and an exhaust port on its side. The exhaust port is connected to the first air inlet, and the air inlet and exhaust port are connected through a flow channel. The valve core is movably disposed at the flow channel, and a third elastic element is provided between the valve core and the proportional distribution valve to block the flow channel.

[0010] Furthermore, a second adjusting rod is provided at one end of the proportional distribution valve, a diaphragm is provided at one end of the valve core, and a fourth elastic element is provided between the second adjusting rod and the diaphragm so that the second adjusting rod controls the position of the valve core.

[0011] Furthermore, it also includes a three-way valve, wherein two of the valve ports are connected to the air inlet and the first air inlet, respectively.

[0012] Furthermore, a second air chamber is formed between the side of the piston away from the first air chamber and the valve body. A second air inlet is provided on the side of the valve body, which is connected to the second air chamber. The second air inlet is connected to a branch of the proportional distribution valve so that the branch can detect the pressure of the second air chamber.

[0013] Furthermore, a valve seat is provided in the air groove, and the end of the valve stem is engaged in the valve seat.

[0014] Furthermore, the end of the first adjusting rod near the push rod has a pad.

[0015] The beneficial effects of this invention are as follows: When supplying gas or hydrogen to the lower or upper valve chamber, because the end of the valve stem is stuck in the gas groove, the gas or hydrogen cannot enter the other gas path from the gas groove in the initial state. At this time, by filling the first gas chamber with gas, the gas pressure in the first gas chamber increases, which pushes the piston to move. The piston drives the valve stem to move away from the gas groove, so that the gas groove connects the lower and upper valve chambers, and the gas such as gas, hydrogen and so on are quickly discharged. Then the first gas chamber returns gas, and with the cooperation of the first elastic element, the valve stem is pushed, so that the valve stem quickly returns to the gas groove, completing a single gas release and closing operation. In this process, through the cooperation of the first gas chamber and the first elastic element, the valve stem can move quickly, thereby controlling the rapid opening or closing of the gas groove, so as to improve the overall response speed of the pulse valve. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the proportional distribution valve in this invention.

[0018] Reference numerals: 1. Valve body; 2. Valve stem; 3. Lower valve chamber; 4. Upper valve chamber; 5. Air groove; 6. Piston; 7. First air chamber; 8. First elastic element; 9. Push rod; 10. Second elastic element; 11. First adjusting rod; 12. Adjusting clearance; 13. First air inlet; 14. Proportional distribution valve; 15. Air inlet; 16. Exhaust port; 17. Flow channel; 18. Valve core; 19. Third elastic element; 20. Second adjusting rod; 21. Diaphragm; 22. Fourth elastic element; 23. Three-way valve; 24. Second air chamber; 25. Second air inlet; 26. Branch; 27. Valve seat; 28. Pad. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0020] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0021] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0022] like Figures 1-2 The present invention provides an adaptive high-frequency pulse valve, including a valve body 1 and a valve stem 2 movably disposed inside the valve body 1. The valve body 2 has a lower valve chamber 3 and an upper valve chamber 4 respectively on both sides. The lower valve chamber 3 and the upper valve chamber 4 are connected by an air groove 5. One end of the valve stem 2 is engaged in the air groove 5 so that when the end of the valve stem 2 is located in the air groove 5 to form a seal, the lower valve chamber 3 and the upper valve chamber 4 are cut off by the valve core plane at the end of the valve stem (2) and the valve seat (27). A piston 6 is provided at the end of the valve stem 2 away from the air groove 5 so that a first air chamber 7 is formed between the piston 6 and the inside of the valve body 1. A first elastic element 8 is connected between the side of the piston 6 away from the first air chamber 3 and the valve body 1. When the first air chamber 7 is filled with air, the valve stem 2 is disengaged from the position of the air groove 5.

[0023] When supplying gas or hydrogen to the lower or upper valve chamber, the valve stem end is engaged in the gas groove, preventing the gas or hydrogen from entering the other gas path initially. At this point, the first gas chamber is pressurized, increasing the pressure and pushing the piston. This causes the piston to move the valve stem away from the gas groove, connecting the gas groove to both the lower and upper valve chambers, allowing the gas or hydrogen to be quickly discharged. Subsequently, the first gas chamber returns to its original position, and the first elastic element pushes the valve stem back into the gas groove, completing a single release and closure operation. During this process, the cooperation between the first gas chamber and the first elastic element allows for rapid valve stem movement, controlling the rapid opening or closing of the gas groove and improving the overall response speed of the pulse valve.

[0024] The first elastic element can be a spring structure.

[0025] Preferably, a push rod 9 is movably provided inside the valve body 1, and a second elastic element 10 is connected between the push rod 9 and the valve body 1. The push rod 9 is matched with the valve stem 2 so that when the valve stem 2 moves away from the air groove 5, it pushes the push rod 9.

[0026] Specifically, when the first air chamber moves by pushing the valve rod through the piston, the end of the valve rod abuts against the push rod and pushes the push rod to move. At this time, since there is a second elastic element between the push rod and the valve body, the second elastic element buffers the push rod and the valve rod, which can effectively reduce the rapid impact force of the valve rod, prevent the pulse valve as a whole from vibrating, and thus extend the service life of the pulse valve.

[0027] The second elastic element can be a spring structure.

[0028] Preferably, one end of the valve body 1 has a first adjusting rod 11, the push rod 9 is matched with the first adjusting rod 11, and there is an adjusting gap 12 between the push rod 9 and the first adjusting rod 11. The adjusting gap 12 is used to limit the movement stroke of the valve rod 2.

[0029] Specifically, when the push rod is pushed by the valve stem to move, the first adjusting rod will limit the movement of the push rod, thereby limiting the movement of the valve stem. Since the movement of the valve stem is directly related to the change in gas flow in the flow channel, the first adjusting rod can conveniently control the gas flow.

[0030] In one embodiment of this solution, the first adjusting rod and the valve body are threaded together, so that the first adjusting rod can rotate to quickly change the size of the adjusting gap, thereby conveniently controlling the gas flow rate.

[0031] Preferably, the valve body 1 has a first air inlet 13 on one side, and the first air inlet 13 is connected to the first air chamber 7.

[0032] Specifically, the first air chamber is filled or defilled through the first air inlet to ensure stable control of the piston by the first air chamber.

[0033] Preferably, it also includes a proportional distribution valve 14, which has an air inlet 15 and an exhaust port 16 on its side. The exhaust port 16 is connected to the first air inlet 13, and the air inlet 15 and the exhaust port 16 are connected through a flow channel 17. The valve core 18 is movably disposed at the flow channel 17. A third elastic element 19 is provided between the valve core 18 and the proportional distribution valve 14 so that the valve core 18 blocks the flow channel 17.

[0034] Specifically, through the setting of the proportional distribution valve, the air inlet supplies air to the proportional distribution valve. In the initial state, the flow channel is blocked by the valve core. When the proportional distribution valve controls the opening and closing state of the pulse valve, the valve core moves to a position away from the flow channel, so that the gas at the air inlet enters the exhaust port and fills the first air inlet through the exhaust port to ensure the pushing effect on the piston. Then, when the air inlet is cut off, the air supply to the first air chamber can be quickly stopped.

[0035] The third elastic element can be a spring structure.

[0036] Preferably, a second adjusting rod 20 is provided at one end of the proportional distribution valve 14, a diaphragm 21 is provided at one end of the valve core 18, and a fourth elastic element 22 is provided between the second adjusting rod 20 and the diaphragm 21 so that the second adjusting rod 20 controls the position of the valve core 18.

[0037] Specifically, the second adjusting rod, in conjunction with the fourth elastic element, pushes the diaphragm to a higher position. Since the diaphragm and valve core are in contact, the diaphragm can push and limit one end of the valve core, thereby ensuring the relative position of the valve core and the flow channel is stable. That is, the valve core can stably maintain the connection with the flow channel. At the same time, in conjunction with the third elastic element and the diaphragm, both ends of the valve core can be stably limited.

[0038] In one embodiment of this solution, the second adjusting rod and the proportional distribution valve are threaded together. At this time, the fixed position of the second adjusting rod can be easily controlled by rotating the second adjusting rod, and then the pressure state of the valve core can be controlled by the diaphragm. With the cooperation of the third elastic element, the position of the valve core can be controlled by the second adjusting rod, and the air flow of the flow channel can be further controlled, that is, the pushing pressure of the first air chamber on the piston, the opening speed of the pulse valve, etc.

[0039] The fourth elastic element can be a spring structure.

[0040] Preferably, it also includes a three-way valve 23, wherein two of the valve ports of the three-way valve 23 are respectively connected to the air inlet 15 and the first air inlet 13.

[0041] Specifically, the three-way valve supplies air to the air inlet or the first air inlet. When the proportional distribution valve is in stable operation, the three-way valve only supplies air to the air inlet. However, when the proportional distribution valve malfunctions, the three-way valve can bypass the proportional distribution valve and directly supply air to the first air inlet to ensure the basic function of the pulse valve.

[0042] The three-way valve is directly connected to the air supply equipment to ensure a stable air supply to the first air chamber or air inlet.

[0043] Preferably, a second air chamber 24 is formed between the piston 6 on the side away from the first air chamber 7 and the valve body 1. A second air inlet 25 is provided on the side of the valve body 1, which is connected to the second air chamber 24. The second air inlet 25 is connected to a branch 26 of the proportional distribution valve 14 so that the branch 26 can detect the pressure of the second air chamber 24.

[0044] Specifically, when the first air chamber pushes the piston, the air pressure in the second air chamber will inevitably change. At this time, the second air chamber is connected to the branch through the second air inlet, so that the air pressure inside the second air chamber can be detected in real time through the air path to ensure the judgment of the air pressure status inside the valve body.

[0045] In one embodiment of this solution, a barometer or other instrument for detecting air pressure can be installed at the branch.

[0046] Preferably, a valve seat 27 is provided in the air groove 5, and the end of the valve stem 2 is engaged in the valve seat 27 so that the valve stem and the valve seat are engaged and the air groove is isolated, thereby increasing the isolation effect of the valve stem.

[0047] In one embodiment of this solution, the valve stem end is provided with a spherical structure, which can effectively increase the guiding effect when the valve stem is snapped into the valve seat.

[0048] Preferably, the end of the first adjusting rod 11 near the push rod 9 has a pad 28, so that when the push rod hits the first adjusting rod, the pad can reduce vibration and insulate sound.

[0049] In one embodiment of this solution, the pad may be made of rubber material.

[0050] This invention is not limited to the preferred embodiments described above. Anyone can derive other products in various forms under the guidance of this invention. However, regardless of any changes in shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this invention.

Claims

1. An adaptive high frequency pulsing valve characterized by: The utility model provides a valve body (1), mobile setting valve stem (2) in valve body (1) inside, the valve body (2) both sides are opened with lower valve cavity (3) and upper valve cavity (4) respectively, lower valve cavity (3) and upper valve cavity (4) are communicated through air groove (5) between, valve stem (2) one end is jointed in air groove (5), to make valve stem (2) end part in air groove (5) form seal, lower valve cavity (3) and upper valve cavity (4) are disconnected, the valve stem (2) is provided with piston (6) in the end away from air groove (5), to make piston (6) and valve body (1) inside form first air chamber (7), piston (6) is connected with first elastic member (8) between the side away from first air chamber (3) and valve body (1), when first air chamber (7) is inflated, valve stem (2) is separated from air groove (5) position, The utility model provides a valve body (1), mobile setting valve stem (2) in valve body (1) inside, the valve body (2) both sides are opened with lower valve cavity (3) and upper valve cavity (4) respectively, lower valve cavity (3) and upper valve cavity (4) are communicated through air groove (5) between, valve stem (2) one end is jointed in air groove (5), to make valve stem (2) end part in air groove (5) form seal, lower valve cavity (3) and upper valve cavity (4) are disconnected, the valve stem (2) is provided with piston (6) in the end away from air groove (5), to make piston (6) and valve body (1) inside form first air chamber (7), piston (6) is connected with first elastic member (8) between the side away from first air chamber (3) and valve body (1), when first air chamber (7) is inflated, valve stem (2) is separated from air groove (5) position, The utility model provides a valve body (1), mobile setting valve stem (2) in valve body (1) inside, the valve body (2) both sides are opened with lower valve cavity (3) and upper valve cavity (4) respectively, lower valve cavity (3) and upper valve cavity (4) are communicated through air groove (5) between, valve stem (2) one end is jointed in air groove (5), to make valve stem (2) end part in air groove (5) form seal, lower valve cavity (3) and upper valve cavity (4) are disconnected, the valve stem (2) is provided with piston (6) in the end away from air groove (5), to make piston (6) and valve body (1) inside form first air chamber (7), piston (6) is connected with first elastic member (8) between the side away from first air chamber (3) and valve body (1), when first air chamber (7) is inflated, valve stem (2) is separated from air groove (5) position, 2. The self- adaptive high frequency pulsing valve of claim 1, wherein: The utility model provides a valve body (1), mobile setting valve stem (2) in valve body (1) inside, the valve body (2) both sides are opened with lower valve cavity (3) and upper valve cavity (4) respectively, lower valve cavity (3) and upper valve cavity (4) are communicated through air groove (5) between, valve stem (2) one end is jointed in air groove (5), to make valve stem (2) end part in air groove (5) form seal, lower valve cavity (3) and upper valve cavity (4) are disconnected, the valve stem (2) is provided with piston (6) in the end away from air groove (5), to make piston (6) and valve body (1) inside form first air chamber (7), piston (6) is connected with first elastic member (8) between the side away from first air chamber (3) and valve body (1), when first air chamber (7) is inflated, valve stem (2) is separated from air groove (5) position, 3. The adaptive high frequency pulsing valve of claim 2, wherein: The utility model provides a valve body (1), mobile setting valve stem (2) in valve body (1) inside, the valve body (2) both sides are opened with lower valve cavity (3) and upper valve cavity (4) respectively, lower valve cavity (3) and upper valve cavity (4) are communicated through air groove (5) between, valve stem (2) one end is jointed in air groove (5), to make valve stem (2) end part in air groove (5) form seal, lower valve cavity (3) and upper valve cavity (4) are disconnected, the valve stem (2) is provided with piston (6) in the end away from air groove (5), to make piston (6) and valve body (1) inside form first air chamber (7), piston (6) is connected with first elastic member (8) between the side away from first air chamber (3) and valve body (1), when first air chamber (7) is inflated, valve stem (2) is separated from air groove (5) position, 4. The self- adaptive high frequency pulsing valve of claim 3, wherein: The utility model provides a valve body (1), mobile setting valve stem (2) in valve body (1) inside, the valve body (2) both sides are opened with lower valve cavity (3) and upper valve cavity (4) respectively, lower valve cavity (3) and upper valve cavity (4) are communicated through air groove (5) between, valve stem (2) one end is jointed in air groove (5), to make valve stem (2) end part in air groove (5) form seal, lower valve cavity (3) and upper valve cavity (4) are disconnected, the valve stem (2) is provided with piston (6) in the end away from air groove (5), to make piston (6) and valve body (1) inside form first air chamber (7), piston (6) is connected with first elastic member (8) between the side away from first air chamber (3) and valve body (1), when first air chamber (7) is inflated, valve stem (2) is separated from air groove (5) position, 5. The self- adaptive high frequency pulsing valve of claim 3, wherein: The utility model provides a valve body (1), mobile setting valve stem (2) in valve body (1) inside, the valve body (2) both sides are opened with lower valve cavity (3) and upper valve cavity (4) respectively, lower valve cavity (3) and upper valve cavity (4) are communicated through air groove (5) between, valve stem (2) one end is jointed in air groove (5), to make valve stem (2) end part in air groove (5) form seal, lower valve cavity (3) and upper valve cavity (4) are disconnected, the valve stem (2) is provided with piston (6) in the end away from air groove (5), to make piston (6) and valve body (1) inside form first air chamber (7), piston (6) is connected with first elastic member (8) between the side away from first air chamber (3) and valve body (1), when first air chamber (7) is inflated, valve stem (2) is separated from air groove (5) position, 6. The self- adaptive high frequency pulsing valve of claim 3, wherein: The utility model provides a valve body (1), mobile setting valve stem (2) in valve body (1) inside, the valve body (2) both sides are opened with lower valve cavity (3) and upper valve cavity (4) respectively, lower valve cavity (3) and upper valve cavity (4) are communicated through air groove (5) between, valve stem (2) one end is jointed in air groove (5), to make valve stem (2) end part in air groove (5) form seal, lower valve cavity (3) and upper valve cavity (4) are disconnected, the valve stem (2) is provided with piston (6) in the end away from air groove (5), to make piston (6) and valve body (1) inside form first air chamber (7), piston (6) is connected with first elastic member (8) between the side away from first air chamber (3) and valve body (1), when first air chamber (7) is inflated, valve stem (2) is separated from air groove (5) position, 7. The self- adaptive high frequency pulsing valve of claim 1, wherein: The utility model provides a valve body (1), mobile setting valve stem (2) in valve body (1) inside, the valve body (2) both sides are opened with lower valve cavity (3) and upper valve cavity (4) respectively, lower valve cavity (3) and upper valve cavity (4) are communicated through air groove (5) between, valve stem (2) one end is jointed in air groove (5), to make valve stem (2) end part in air groove (5) form seal, lower valve cavity (3) and upper valve cavity (4) are disconnected, the valve stem (2) is provided with piston (6) in the end away from air groove (5), to make piston (6) and valve body (1) inside form first air chamber (7), piston (6) is connected with first elastic member (8) between the side away from first air chamber (3) and valve body (1), when first air chamber (7) is inflated, valve stem (2) is separated from air groove (5) position, The utility model provides a valve body (1), mobile setting valve stem (2) in valve body (1) inside, the valve body (2) both sides are opened with lower valve cavity (3) and upper valve cavity (4) respectively 8. The self- adaptive high frequency pulsing valve of claim 1, wherein: The first adjusting rod (11) has a pad (28) near one end of the push rod (9).

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