Self-adaptive high-frequency pulse valve

Abstract

The invention provides a self-adaptive high-frequency pulse valve which comprises a valve body and a valve rod movably arranged on the inner side of the valve body, a lower valve cavity and an upper valve cavity are formed in the two sides of the valve body respectively and communicate with each other through an air groove, and one end of the valve rod is clamped in the air groove, so that when the end of the valve rod is located in the air groove to form sealing, the valve rod is clamped in the air groove. The lower valve cavity is disconnected with the upper valve cavity; a piston is arranged at the end, away from the air groove, of the valve rod so that a first air cavity can be formed between the piston and the inner side of the valve body, a first elastic piece is connected between the side, away from the first air cavity, of the piston and the valve body, and when the first air cavity is inflated, the valve rod is separated from the air groove. The response speed of the pulse valve is increased.

Description

Technical Field

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

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

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

[0004] The purpose of the present invention is to provide an adaptive high-frequency pulse valve that can improve the response speed of the pulse valve.

[0005] To solve the above technical problems, the present invention provides an adaptive high-frequency pulse valve, including a valve body and a valve stem movably arranged inside the valve body. Lower valve cavities and upper valve cavities are respectively opened on both sides of the valve body. The lower valve cavity and the upper valve cavity are connected through a gas groove. One end of the valve stem is clamped in the gas groove, so that when the end of the valve stem forms a seal in the gas groove, the lower valve cavity and the upper valve cavity are disconnected; a piston is arranged at the end of the valve stem away from the gas groove, so that a first air cavity is formed between the piston and the inside of the valve body. A first elastic member is connected between the side of the piston away from the first air cavity and the valve body. When the first air cavity is inflated, the valve stem moves away from the gas groove position.

[0006] Further, a push rod is movably arranged inside the valve body. A second elastic member is connected between the push rod and the valve body, and the push rod is matched with the valve stem, so that when the valve stem moves away from the gas groove, the push rod is pushed.

[0007] Further, 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 is used to limit the moving stroke of the valve stem.

[0008] Further, a first air inlet is opened on the side of the valve body, and the first air inlet communicates with the first air cavity.

[0009] Further, it also includes a proportional distribution valve. An air inlet hole and an exhaust hole are opened on the side of the proportional distribution valve. The exhaust hole is connected to the first air inlet, and the air inlet hole and the exhaust hole are connected through a flow channel. A valve core is movably arranged at the flow channel. A third elastic member is arranged between the valve core and the proportional distribution valve, so that the valve core blocks the flow channel.

[0010] Further, 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 in a butt-jointed manner, and a fourth elastic member is provided between the second adjusting rod and the diaphragm to enable the second adjusting rod to control the position of the valve core.

[0011] Further, a three-way valve is further included, and two valve ports of the three-way valve are respectively connected to the air inlet hole and the first air inlet.

[0012] Further, 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 communicating with the second air chamber is provided on the side of the valve body, and the second air inlet is connected to the branch of the proportional distribution valve to enable the branch to detect the pressure of the second air chamber.

[0013] Further, a valve seat is provided in the air groove, and the end of the valve rod is clamped in the valve seat.

[0014] Further, a backing plate is provided at one end of the first adjusting rod close to the push rod.

[0015] The beneficial effects of the present invention are as follows: Gas such as coal gas and hydrogen is supplied to the lower valve chamber or the upper valve chamber. Since the end of the valve rod is clamped in the air groove, coal gas and hydrogen cannot enter another air path from the air groove in the initial state. At this time, the first air chamber is inflated, so that the air pressure in the first air chamber rises, and then the piston is pushed to move, so that the piston drives the valve rod to move away from the air groove, so that the air groove communicates with the lower valve chamber and the upper valve chamber, and gases such as coal gas and hydrogen are quickly discharged. Subsequently, the first air chamber returns air, and the first elastic member cooperates to push the valve rod, so that the valve rod quickly resets to the air groove, completing a single deflation and closing operation. In this process, through the cooperation of the first air chamber and the first elastic member, the valve rod can be quickly moved, thereby controlling the quick opening or closing of the air groove, so as to improve the overall response speed of the pulse valve. Description of the Drawings

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

[0017] Figure 2 is a schematic structural diagram of the proportional distribution valve in the present 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 member; 9, push rod; 10, second elastic member; 11, first adjusting rod; 12, adjusting gap; 13, first air inlet; 14, proportional distribution valve; 15, air inlet hole; 16, exhaust hole; 17, flow channel; 18, valve core; 19, third elastic member; 20, second adjusting rod; 21, diaphragm; 22, fourth elastic member; 23, three-way valve; 24, second air chamber; 25, second air inlet; 26, branch; 27, valve seat; 28, backing plate. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0020] Those skilled in the art should understand that in the disclosure of the present invention, the orientation or positional relationships indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. It is 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. Therefore, the above terms should not be construed as limiting the present invention.

[0021] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one element can be one, and in another embodiment, the number of this element can be multiple. The term "one" should not be construed as limiting the quantity.

[0022] As Figure 1 - Figure 2 described, the present invention provides an adaptive high-frequency pulse valve, including a valve body 1 and a valve stem 2 movably arranged inside the valve body 1. Lower valve chambers 3 and upper valve chambers 4 are respectively opened on both sides of the valve body 2. The lower valve chamber 3 and the upper valve chamber 4 are communicated through an air groove 5. One end of the valve stem 2 is clamped in the air groove 5. 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 arranged at one 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 member 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 inflated, the valve stem 2 disengages from the position of the air groove 5.

[0023] Gas or hydrogen is supplied to the lower valve chamber or the upper valve chamber. Since the end of the valve stem is clamped in the gas groove, gas such as gas and hydrogen cannot enter another gas path from the gas groove in the initial state. At this time, by inflating the first air chamber, the air pressure in the first air chamber rises, and then the piston is pushed to move, so that the piston drives the valve stem to move away from the gas groove, so that the gas groove communicates with the lower valve chamber and the upper valve chamber, and gases such as gas and hydrogen are quickly discharged. Subsequently, the first air chamber returns air, and the first elastic member is used to push the valve stem, so that the valve stem quickly resets to the gas groove, completing a single deflation and closing operation. In this process, through the cooperation of the first air chamber and the first elastic member, the valve stem can be quickly moved, and then the rapid opening or closing of the gas groove can be controlled, so as to improve the overall response speed of the pulse valve.

[0024] Among them, the first elastic member can adopt a spring structure.

[0025] Preferably, a push rod 9 is movably arranged inside the valve body 1, a second elastic member 10 is connected between the push rod 9 and the valve body 1, and the push rod 9 is matched with the valve stem 2, so that when the valve stem 2 moves away from the gas groove 5, the push rod 9 is pushed.

[0026] Specifically, when the first air chamber pushes the valve stem to move through the piston, the end of the valve stem abuts against the push rod and pushes the push rod to move. At this time, since there is a second elastic member between the push rod and the valve body, the second elastic member buffers the push rod and the valve stem, which can effectively reduce the rapid impact force of the valve stem and prevent the overall vibration of the pulse valve, thereby prolonging the service life of the pulse valve.

[0027] Among them, the second elastic member can adopt 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, and the adjusting gap 12 is used to limit the moving stroke of the valve stem 2.

[0029] Specifically, when the push rod is pushed by the valve stem to move, the first adjusting rod will limit the moving stroke of the push rod, and then limit the moving stroke of the valve stem. Since the moving stroke of the valve stem is directly related to the gas flow rate change at the flow channel, the first adjusting rod can actually conveniently control the gas flow rate.

[0030] In an embodiment of the present solution, the first adjusting rod and the valve body are in threaded cooperation, so that the first adjusting rod can be rotated to quickly change the size of the adjusting gap, thereby conveniently controlling the gas flow rate.

[0031] Preferably, a first air inlet 13 is opened on the side of the valve body 1, and the first air inlet 13 communicates with the first air chamber 7.

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

[0033] Preferably, it further includes a proportional distribution valve 14. An air inlet hole 15 and an exhaust hole 16 are provided on the side of the proportional distribution valve 14. The exhaust hole 16 is connected to the first air inlet 13, and the air inlet hole 15 and the exhaust hole 16 are communicated through a flow channel 17. A valve core 18 is movably arranged at the flow channel 17. A third elastic member 19 is arranged between the valve core 18 and the proportional distribution valve 14 to block the flow channel 17 by the valve core 18.

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

[0035] Among them, the third elastic member can adopt a spring structure.

[0036] Preferably, a second adjusting rod 20 is arranged at one end of the proportional distribution valve 14. A diaphragm 21 is abutted at one end of the valve core 18, and a fourth elastic member 22 is arranged between the second adjusting rod 20 and the diaphragm 21 to control the position of the valve core 18 by the second adjusting rod 20.

[0037] Specifically, through the setting of the second adjusting rod, the position of the diaphragm is pushed by the fourth elastic member. Since the diaphragm is in abutting cooperation with the valve core, the diaphragm can push and limit one end of the valve core, thereby ensuring the relative position stability of the valve core and the flow channel, that is, the valve core can stably maintain the communication state of the flow channel. At the same time, with the setting of the third elastic member and the diaphragm, both ends of the valve core can be stably limited.

[0038] In an embodiment of this solution, the second adjusting rod and the proportional distribution valve are in a threaded fit. At this time, the fixed position of the second adjusting rod can be conveniently controlled by rotating the second adjusting rod, and then the pressing state of the valve core is controlled through the diaphragm. With the cooperation of the third elastic member, the position of the valve core can be controlled by the second adjusting rod, and further the air volume passing through the flow channel can be controlled, that is, the pushing pressure of the first air chamber on the piston, the opening speed of the pulse valve, etc.

[0039] Among them, the fourth elastic member can adopt a spring structure.

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

[0041] Specifically, the three-way valve supplies air to the air inlet hole or the first air inlet. When the proportional distribution valve is used stably, the three-way valve only supplies air to the air inlet hole. When problems such as a malfunction occur in the proportional distribution valve, 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] Among them, the three-way valve is directly connected to the air supply device to ensure a stable air supply to the first air chamber or the air inlet hole.

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

[0044] Specifically, when the first air chamber pushes the piston for control, the air pressure in the second air chamber will inevitably change. At this time, by making the second air chamber communicate with the branch through the second air inlet, 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 state inside the valve body.

[0045] In an embodiment of this solution, an instrument for detecting air pressure, such as a pressure gauge, can be provided at the branch.

[0046] Preferably, a valve seat 27 is arranged in the air groove 5, and the end of the valve rod 2 is clamped in the valve seat 27 so that the valve rod and the valve seat are clamped and the air groove is partitioned, increasing the partitioning effect of the valve rod.

[0047] In an embodiment of this solution, the end of the valve rod is arranged in a spherical structure, which can effectively increase the guiding effect when the valve rod is clamped to the valve seat.

[0048] Preferably, a backing plate 28 is provided at the end of the first adjusting rod 11 close to the push rod 9 so that when the push rod impacts the first adjusting rod, vibration reduction and sound insulation can be achieved through the backing plate.

[0049] In an embodiment of this solution, the backing plate can be made of rubber material.

[0050] The present invention is not limited to the above best implementation manner. Anyone can obtain other various forms of products under the inspiration of the present invention. However, no matter what changes are made in its shape or structure, as long as it has a technical solution identical or similar to the present application, it falls within the protection scope of the present invention.

Claims

1. An adaptive high-frequency pulse valve, characterized in that: The utility model comprises a valve body (1) and a valve stem (2) movably arranged on the inner side of the valve body (1); a lower valve cavity (3) and an upper valve cavity (4) are respectively provided on both sides of the valve body (2); the lower valve cavity (3) and the upper valve cavity (4) are connected via an air groove (5); one end of the valve stem (2) is clamped 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 cavity (3) and the upper valve cavity (4) are disconnected; a piston (6) is provided at one end of the valve stem (2) away from the air groove (5) so that a first air cavity (7) is formed between the piston (6) and the inner side of the valve body (1); a first elastic member (8) is connected between the side of the piston (6) away from the first air cavity (3) and the valve body (1); when the first air cavity (7) is inflated, the valve stem (2) is separated from the air groove (5).

2. The adaptive high-frequency pulse valve according to claim 1, characterized in that: A push rod (9) is movably arranged inside the valve body (1), a second elastic member (10) is connected between the push rod (9) and the valve body (1), and the push rod (9) matches the valve stem (2) so that when the valve stem (2) is separated from the air groove (5) and moves, the push rod (9) is pushed.

3. The adaptive high-frequency pulse valve according to claim 2, characterized in that: The valve body (1) has a first adjusting rod (11) at one end, the push rod (9) matches the first adjusting rod (11), and an adjusting gap (12) is provided between the push rod (9) and the first adjusting rod (11), and the adjusting gap (12) is used to limit the movement stroke of the valve stem (2).

4. The adaptive high-frequency pulse valve according to claim 1, characterized in that: A first air inlet (13) is provided on the side of the valve body (1), and the first air inlet (13) is connected to the first air cavity (7).

5. The adaptive high-frequency pulse valve according to claim 4, characterized in that: The invention also comprises a proportional distribution valve (14), wherein an air inlet hole (15) and an air outlet hole (16) are provided on the side of the proportional distribution valve (14), wherein the air outlet hole (16) is connected to the first air inlet port (13), and the air inlet hole (15) and the air outlet hole (16) are connected via a flow channel (17), wherein a valve core (18) is movably arranged at the flow channel (17), and a third elastic member (19) is arranged between the valve core (18) and the proportional distribution valve (14) so ​​that the valve core (18) blocks the flow channel (17).

6. The adaptive high-frequency pulse valve according to claim 5, characterized in that: A second regulating rod (20) is arranged at one end of the proportional distribution valve (14), a diaphragm (21) is arranged in contact with one end of the valve core (18), and a fourth elastic member (22) is arranged between the second regulating rod (20) and the diaphragm (21), so that the second regulating rod (20) controls the position of the valve core (18).

7. The adaptive high-frequency pulse valve according to claim 5, characterized in that: It also comprises a three-way valve (23), two valve ports of which are respectively connected to the air inlet (15) and the first air inlet (13).

8. The adaptive high-frequency pulse valve according to claim 5, characterized in that: A second air cavity (24) is formed between the side of the piston (6) away from the first air cavity (7) and the valve body (1); a second air inlet (25) connected to the second air cavity (24) is provided on the side of the valve body (1); 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 cavity (24).

9. The adaptive high-frequency pulse valve according to claim 1, characterized in that: A valve seat (27) is provided in the air groove (5), and the end of the valve stem (2) is clamped in the valve seat (27).

10. The adaptive high-frequency pulse valve according to claim 3, characterized in that: The first adjusting rod (11) has a pad (28) at one end close to the push rod (9).

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