CN112682395B - A self-excited pulsating airflow generating device and airflow generating method thereof - Google Patents

A self-excited pulsating airflow generating device and airflow generating method thereof Download PDF

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CN112682395B
CN112682395B CN202011292742.8A CN202011292742A CN112682395B CN 112682395 B CN112682395 B CN 112682395B CN 202011292742 A CN202011292742 A CN 202011292742A CN 112682395 B CN112682395 B CN 112682395B
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permanent magnet
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excitation
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CN112682395A (en
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许明
孙启民
陈国金
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Hangzhou Dianzi University
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Hangzhou Dianzi University
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Abstract

本发明公开了一种自激励脉动气流发生装置及其气流发生方法。本发明包括n个自激励永磁阀单元。自激励永磁阀单元包括自激励阀壳、堵气永磁体、第一固定永磁体、第二固定永磁体、滑动永磁体、自激励偏管和气压膨胀管。第二固定永磁体、堵气永磁体、第一固定永磁体、滑动永磁体依次排列安装在自激励阀壳内,且依次相互吸引。端部封闭管穿过第二固定永磁体与堵气永磁体之间;自激励偏管穿过堵气永磁体与第一固定永磁体之间。自激励偏管和端部封闭管靠近堵气永磁体侧面均开有自激励漏气口。本发明中用前一个自激励永磁阀单元的输出气流去触发后一个自激励永磁阀单元的充释压,故能在仅输入稳定气流的情况下实现多个自激励出气口周期性地充压和释压。

Figure 202011292742

The invention discloses a self-excited pulsating airflow generating device and an airflow generating method thereof. The present invention includes n self-excited permanent magnet valve units. The self-excited permanent magnet valve unit includes a self-excited valve housing, a gas blocking permanent magnet, a first fixed permanent magnet, a second fixed permanent magnet, a sliding permanent magnet, a self-excited deflection tube and a pneumatic expansion tube. The second fixed permanent magnet, the gas blocking permanent magnet, the first fixed permanent magnet and the sliding permanent magnet are arranged and installed in the self-exciting valve housing in sequence, and attract each other in sequence. The end closed tube passes between the second fixed permanent magnet and the gas blocking permanent magnet; the self-exciting deflection tube passes between the gas blocking permanent magnet and the first fixed permanent magnet. Both the self-exciting deflection tube and the end closed tube are provided with self-exciting gas leakage ports near the side surfaces of the gas-blocking permanent magnets. In the present invention, the output air flow of the previous self-excited permanent magnet valve unit is used to trigger the charge and release of the latter self-excited permanent magnet valve unit, so that multiple self-excited air outlets can be periodically Inflate and depressurize.

Figure 202011292742

Description

Self-excitation pulsating airflow generating device and airflow generating method thereof
Technical Field
The invention belongs to the technical field of pulsating gas sources, and particularly relates to a self-excitation pulsating gas flow generating device and a gas flow generating method thereof.
Background
The self-excitation valve in the prior art mainly depends on the self-excitation of a circuit system to generate signals to control a valve actuating mechanism so as to realize the periodic on-off of the valve. The valve of this type can be regarded as being composed of two main parts, namely a circuit system and a valve execution structure, and a signal source output by the circuit system is used as an excitation control valve execution mechanism. Therefore, at the present stage, the self-excitation valve needs to be provided with a circuit system, and regular on-off can not be realized by the internal mechanical structure of the valve. Furthermore, the current state of the art self-energizing valve circuitry is not suitable for use in deep water areas where high water resistance is required. Since the waterproof property increases the complexity of the system, the flexible operation of the underwater actuator is not utilized.
Disclosure of Invention
The invention aims to provide a self-excitation pulsating airflow generation device and an airflow generation method thereof.
The invention relates to a self-excitation pulsating airflow generating device which comprises n self-excitation permanent magnet valve units, wherein n is more than or equal to 2. The self-excitation permanent magnet valve unit comprises a self-excitation valve casing, an air blocking permanent magnet, a first fixed permanent magnet, a second fixed permanent magnet, a sliding permanent magnet, a self-excitation bias pipe and an air pressure expansion pipe. The second fixed permanent magnet, the air blocking permanent magnet, the first fixed permanent magnet and the sliding permanent magnet are sequentially arranged in the self-excitation valve casing and are sequentially attracted to each other. The second fixed permanent magnet is fixed with the self-energizing valve housing. The air-blocking permanent magnet is connected with the self-excitation valve shell in a sliding manner. The first fixed permanent magnet is fixed with the self-energizing valve housing. The sliding permanent magnet is in sliding connection with the self-excitation valve shell; an air pressure expansion pipe is arranged between the first fixed permanent magnet and the sliding permanent magnet.
One end of the end closed pipe and one end of the self-excitation bias pipe are connected together to serve as an air inlet of the self-excitation permanent magnet valve unit. The end part closed pipe passes through the space between the second fixed permanent magnet and the air blocking permanent magnet; the self-excitation offset pipe penetrates between the air blocking permanent magnet and the first fixed permanent magnet. Self-excitation air leakage ports are formed in the side faces, close to the air-blocking permanent magnet, of the self-excitation bias pipe and the end part closed pipe. The other end of the end closed pipe is closed; the other end of the self-excitation deflection pipe is communicated with one end of the first output pipe and one end of the second output pipe. The n self-excitation permanent magnet valve units are sequentially connected end to end through a second output pipe and an air pressure expansion pipe to form a closed loop. And the first output pipes of the n self-excitation permanent magnet valve units are used as n air outlets of the self-excitation driving module.
Preferably, both the self-exciting bias tube and the closed end tube are inflatable. And a self-excitation restriction opening is formed in the outer side of the self-excitation valve shell. The self-excitation bias pipe and the closed-end pipe both pass through the self-excitation restriction port.
Preferably, the sectional area of the self-excitation air leakage port on the end closed pipe of one of the self-excitation permanent magnet valve units is larger than the sectional areas of the self-excitation air leakage ports on the end closed pipes of the other n self-excitation driving modules.
Preferably, the outer side surface of the sliding permanent magnet in one of the self-excitation permanent magnet valve units is fixed with the connecting rod. The connecting rod extends out of the self-excitation bracket of the self-excitation driving module;
preferably, a starting electromagnet is arranged at the outer side of the second fixed permanent magnet in one of the self-excitation permanent magnet valve units at intervals; the starting electromagnet is fixed on the self-excitation bracket. When the electromagnet is started to be electrified, the sliding permanent magnet is attracted and moves to a state of abutting against the self-excitation bias tube.
Preferably, a check valve with an inward output port is connected to the air pressure expansion pipe in one of the self-excitation permanent magnet valve units; when the starting device is started, the input port of the one-way valve is connected with the output port of a starting air source; the gas flow output by the starting gas source is larger than the flow input by the driving gas source from the exciting offset pipe.
Preferably, the self-excited pulsating gas flow generating device of the present invention further comprises a self-excited outer frame and a magnetic shield foil plate. The magnetic shielding foil plate is fixed on the self-excitation outer frame, and the self-excitation outer frame is internally divided into n mounting cavities. The n self-excitation permanent magnet valve units are respectively arranged in the n installation cavities.
Preferably, one or more air outlets of the self-excitation driving module are connected with electromagnetic control valves. The electromagnetic control valve comprises a control valve self-excitation bracket, a suction closing block, a first electromagnet, a second electromagnet and a control deflection pipe. The attracted closed block is made of ferromagnetic material or permanent magnet. The first electromagnet and the second electromagnet are respectively fixed on two sides of the control valve self-excitation support. The suction closing block is connected in the control valve self-excitation bracket in a sliding manner; the number of the control deflection pipes is two. One of the control deflection pipes passes through the space between the first electromagnet and the attracted sealing block; and the other control deflection pipe passes through the space between the second electromagnet and the attracted sealing block. One side of the two control deflection pipes close to the sucked sealing block is provided with a control valve air leakage opening. One ends of the two control partial pipes are connected together and used as air inlets of the electromagnetic control valves, and the other ends of the two control partial pipes are respectively two air outlets of the electromagnetic control valves. The inner ends of the two control partial pipes are connected together and used as air inlets of the electromagnetic control valve. The outer ends of the two control eccentric pipes are respectively two air outlets of an electromagnetic control valve.
Preferably, the sucked closing block is connected with the inner side wall of the control valve self-excitation bracket through a spring; the control bias pipe is inflated to expand. And a control valve restraint port is formed in the outer side of the control valve self-excitation support. The two control eccentric pipes pass through the control valve restriction ports.
The airflow generation method of the self-excitation pulsating airflow generation device comprises the following specific steps:
step one, inputting stable airflow to n air inlets of a self-excitation driving module. The n self-excitation permanent magnet valve units are all in an initial state that the gas blocking permanent magnets abut against the end part closed pipe to seal the self-excitation gas leakage openings on the end part closed pipe, so that gas input into the end part closed pipe cannot be leaked. As gas is input, the gas pressure in the closed end pipe rises and begins to expand in the radial direction, and the expanded closed end pipe is pressed in the self-excitation restriction opening to be stopped at the self-excitation restriction opening. The thrust that the gas blocking permanent magnet received the atmospheric pressure in the tip closed tube and brought through self-excitation gas leakage mouth, and this thrust keeps getting bigger along with gaseous continuous output tip closed tube.
And step two, the air blocking permanent magnet in one of the self-excitation permanent magnet valve units is firstly pushed to the second fixed permanent magnet. The self-excitation air leakage of the end closed pipe is leaked, and the pressure of the end closed pipe is released; the self-excitation air leakage port of the self-excitation offset pipe is blocked by the air blocking permanent magnet, the self-excitation offset pipe inputs air, the internal air pressure rises and begins to expand along the radial direction, the expanded self-excitation offset pipe extrudes in the self-excitation constraint port, and the end part of the self-excitation offset pipe is closed. Gas is output from the first output pipe and the second output pipe; the gas output by the second output pipe enters a gas pressure expansion pipe of the following self-excitation permanent magnet valve unit; the gas output by the first output pipe enters an electromagnetic control valve or a corresponding driving elastic unit.
Thirdly, after the gas output by the second output pipe of the previous self-excitation permanent magnet valve unit enters the gas pressure expansion pipe in the next self-excitation permanent magnet valve unit, the gas pressure expansion pipe in the next self-excitation permanent magnet valve unit expands to push away the sliding permanent magnet, so that the attractive force of the first fixed permanent magnet and the sliding permanent magnet on the gas blocking permanent magnet in the next self-excitation permanent magnet valve unit is reduced, the gas blocking permanent magnet in the next self-excitation permanent magnet valve unit slides to the self-excitation offset pipe, the self-excitation gas leakage port of the self-excitation offset pipe of the next self-excitation permanent magnet valve unit is blocked, and the first output pipe and the second output pipe of the next self-excitation permanent magnet valve unit output gas; meanwhile, the air blocking permanent magnet in the previous self-excitation permanent magnet valve unit is pushed by the air pressure of the self-excitation air leakage port of the corresponding self-excitation offset pipe to slide to the position of the self-excitation air leakage port of the closed pipe at the end part, so that the self-excitation offset pipe in the previous self-excitation permanent magnet valve unit releases pressure, and the pressure of the air pressure expansion pipe in the next self-excitation permanent magnet valve unit is released to restore the original state; at this time, the latter sliding permanent magnet of the self-energizing permanent magnet valve unit is reset by the attraction force of the first stationary permanent magnet. And the self-excitation driving module realizes the sequential and alternate pressurization and pressure release of the n air outlets of the self-excitation driving module under the condition of stable air pressure flow input.
The invention has the beneficial effects that:
1. the self-excitation permanent magnet valve units of the self-excitation driving module control the charging and releasing of the four self-excitation air outlets by the action of magnetic attraction force between the permanent magnets in the self-excitation driving module and the change of gas pressure. Because the output airflow of the former self-excitation permanent magnet valve unit is used as an air pressure signal to trigger the charging and pressure releasing of the latter self-excitation permanent magnet valve unit, the periodic charging and pressure releasing of a plurality of self-excitation air outlets can be realized under the condition of only inputting stable airflow without any external excitation signal.
2. The invention realizes that one pipeline is cut off when the other pipeline is pressurized by utilizing the expansion of the self-excitation offset pipe and the air pressure expansion pipe at the restriction port when the pipelines are pressurized, thereby avoiding the leakage of gas and enhancing the load capacity of the pulsating output airflow.
3. The invention can utilize any stable fluid source in the natural environment to generate impulse response by excitation, thereby realizing the output of pulsating airflow without a control module and power elements.
Drawings
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of the gas circuit connection according to embodiment 1 of the present invention;
FIG. 3 is a schematic diagram showing the internal structure of a self-excited permanent magnet valve unit according to embodiment 1 of the present invention
Fig. 4 is a schematic view of a self-energizing permanent magnet valve unit at the start of gas charging in embodiment 1 of the present invention;
FIG. 5 is a schematic view of the self-energizing permanent magnet valve unit after the pneumatic expansion tube is expanded in embodiment 1 of the present invention;
FIG. 6 is a schematic diagram of the self-excitation process in embodiment 1 of the present invention;
FIG. 7 is a schematic view of the gas circuit connection according to embodiment 2 of the present invention;
fig. 8 is a schematic view of the internal structure of an electromagnetic control valve in embodiment 2 of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1 and 4, a self-excited pulsating gas flow generating device includes a driving gas source 1, a hose 5, a self-excited outer frame 2, a magnetic shield foil 3, and a self-excited permanent magnet valve unit 4. The annealed magnetic shielding foil plate 3 is cross-shaped, and divides the interior of the self-excitation outer frame 2 into four installation cavities. Four self-excitation permanent magnet valve units 4 are respectively installed in the four installation cavities. The magnetic shielding foil plate 3 can shield magnetic force after being annealed, and under the action of the magnetic shielding foil plate, the four self-excitation permanent magnet valve units 4 do not interfere with each other.
The self-excitation permanent magnet valve unit 4 comprises a self-excitation valve shell, an air blocking permanent magnet 4-11, a first fixed permanent magnet 4-10, a second fixed permanent magnet 4-3, a sliding permanent magnet 4-9, a self-excitation offset pipe 4-1, an air pressure expansion pipe 4-7 and a self-excitation restriction port 4-14. The self-energizing valve housing includes a primary frame 4-2 and a secondary frame 4-8. The main frame 4-2 and the auxiliary frame 4-8 are fixed together side by side. The second fixed permanent magnet 4-3, the air-blocking permanent magnet 4-11, the first fixed permanent magnet 4-10 and the sliding permanent magnet 4-9 are sequentially arranged in the self-excitation valve casing (from right to left in the figure 4) and are sequentially attracted to each other (namely, the magnetic poles are the same in direction, the opposite ends of the second fixed permanent magnet 4-3 and the air-blocking permanent magnet 4-11 are opposite in polarity, the opposite ends of the air-blocking permanent magnet 4-11 and the first fixed permanent magnet 4-10 are opposite in polarity, and the opposite ends of the first fixed permanent magnet 4-10 and the sliding permanent magnet 4-9 are opposite in polarity).
The second fixed permanent magnet 4-3 is fixed with the main frame 4-2. The air-blocking permanent magnet 4-11 is connected with the inner cavity of the main frame 4-2 in a sliding way, and the sliding direction is parallel to the arrangement direction of the four permanent magnets. The first fixed permanent magnet 4-10 is fixed with the subframe 4-8. The sliding permanent magnets 4-9 are connected with the inner cavity of the subframe 4-8 in a sliding manner, and the sliding direction is parallel to the arrangement direction of the four permanent magnets. A plurality of first balls 4-13 are arranged between the air blocking permanent magnet 4-11 and the inner cavity of the main frame 4-2 to reduce the friction force; a plurality of second balls 4-15 are arranged between the sliding permanent magnets 4-9 and the inner cavity of the subframe 4-8 to reduce the friction force; an air pressure expansion pipe 4-7 is arranged between the first fixed permanent magnet 4-10 and the sliding permanent magnet 4-9. When the air pressure expansion pipe 4-7 is inflated by air, the sliding permanent magnet 4-9 is pushed to be far away from the first fixed permanent magnet 4-10.
The outer side of the main frame 4-2 is provided with a self-excitation restriction opening 4-14. The self-excitation bias tube 4-1 and the closed-end tube 4-4 both pass through the self-excitation restriction port 4-14. The self-excitation inclined tube 4-1 and the end part closed tube 4-4 both adopt expansion air tubes, and when the internal air pressure is increased, the expansion air tubes expand along the radial direction; if the air pressure in the end closed pipe 4-4 is increased to be larger than the air pressure in the self-excitation inclined pipe 4-1, the end closed pipe 4-4 is expanded, the self-excitation inclined pipe 4-1 is extruded in the self-excitation restriction opening 4-14, and the self-excitation inclined pipe 4-1 is cut off under extrusion and cannot be ventilated. On the contrary, if the pressure in the self-excited inclined tube 4-1 is increased to be larger than that in the closed end tube 4-4, the self-excited inclined tube 4-1 is expanded, so that the closed end tube 4-4 is cut off under extrusion.
The closed end pipe 4-4 and the inner end (i.e. air inlet end) of the self-excitation bias pipe 4-1 are connected together to serve as an air inlet of the self-excitation permanent magnet valve unit 4 and are connected to the driving air source 1 through a hose 5. The outer ends of the end closed pipe 4-4 and the self-excitation offset pipe 4-1 extend into the main frame 4-2. The end part closed pipe 4-4 penetrates between the second fixed permanent magnet 4-3 and the air blocking permanent magnet 4-11; the self-excitation bias pipe 4-1 passes through the air-blocking permanent magnet 4-11 and the first fixed permanent magnet 4-10. The self-excitation inclined tube 4-1 and the end part closed tube 4-4 are provided with self-excitation air leakage openings 4-12 close to the side surface of the air blocking permanent magnet 4-11.
When the air blocking permanent magnet 4-11 props against the self-excitation air leakage port 4-12 of the end closed pipe 4-4, the end closed pipe 4-4 can be enabled to be air-tight; the air blocking permanent magnet 4-11 can make the self-excitation offset pipe 4-1 not leak air when abutting against the self-excitation air leakage port 4-12 of the self-excitation offset pipe 4-1. In an initial state, the air-blocking permanent magnet 4-11 is pressed against the self-excitation air leakage port 4-12 of the end closed pipe 4-4 under the adsorption of the first fixed permanent magnet 4-10 and the sliding permanent magnet 4-9. The outer end part of the end part closed pipe 4-4 is closed; the end opening of the outer end of the self-excitation offset pipe 4-1 is communicated with one end of a first output pipe 4-5 and one end of a second output pipe 4-6.
As shown in fig. 4, the four self-excitation permanent magnet valve units 4 are sequentially connected end to end through the second output pipes 4-6 and the air pressure expansion pipes 4-7 to form a closed loop (i.e., the last self-excitation permanent magnet valve unit 4 is connected with the first self-excitation permanent magnet valve unit 4); the second output pipe 4-6 in the former self-excitation permanent magnet valve unit 4 is connected to the air pressure expansion pipe 4-7 in the latter self-excitation permanent magnet valve unit 4 to form a closed loop. Therefore, when the second output pipe 4-6 in the former self-excitation permanent magnet valve unit 4 outputs airflow, the air pressure expansion pipe 4-7 in the latter self-excitation permanent magnet valve unit 4 expands the air to push the sliding permanent magnet 4-9 away.
The first output pipes 4-5 of the four self-excitation permanent magnet valve units 4 are used as four self-excitation air outlets of the self-excitation driving module. The sectional area of the self-excitation air leakage port 4-12 on the end closed pipe 4-4 of one self-excitation permanent magnet valve unit 4 is larger than the sectional areas of the self-excitation air leakage ports 4-12 on the end closed pipes 4-4 of the other three self-excitation driving modules. So that the air-lock permanent magnet 4-11 in the self-excitation driving module with the cross section area of the end closed pipe 4-4 self-excitation air leakage port 4-12 can be pushed out first under the condition of the same air pressure.
The four self-excitation permanent magnet valve units 4 work in cooperation as follows:
as shown in fig. 6, a constant air pressure flow is input to the self-excitation bias pipe 4-1 and the closed end pipe 4-4 in the four self-excitation permanent magnet valve units 4; in the initial state, the air blocking permanent magnets 4-11 in the respective excitation drive modules are subjected to the attraction resultant force Fa from the first fixed permanent magnets 4-10 and the sliding permanent magnets 4-9 and also subjected to the resultant force Fb from the air pressure at the self-excitation air leakage ports 4-12 of the end closed pipes 4-4 and the attraction force of the second fixed permanent magnets 4-3 d; force Fa is in the opposite direction of force Fb, and Fa > Fb. At this time, the air-lock permanent magnet 4-11 abuts against the first stationary permanent magnet 4-10.
As shown in fig. 7, the air blocking permanent magnet 4-11 in the self-excited driving module having the largest self-excited air leakage port 4-12 in the closed end pipe 4-4 is pushed toward the self-excited bias pipe 4-1 to abut against the self-excited air leakage port 4-12 of the self-excited bias pipe 4-1. The gas flow fed into the exciting offset pipe 4-1 no longer leaks from the exciting gas leak port 4-12, but is fed out to the first outlet pipe 4-5 and the second outlet pipe 4-6. The second output pipe 4-6 outputs the gas to the air pressure expansion pipe 4-7 in the latter self-excitation permanent magnet valve unit 4, so that the air pressure expansion pipe 4-7 in the latter self-excitation permanent magnet valve unit 4 expands to push away the sliding permanent magnet 4-9, and further the attraction resultant force Fa of the first fixed permanent magnet 4-10 and the sliding permanent magnet 4-9 on the air blocking permanent magnet 4-11 in the latter self-excitation permanent magnet valve unit 4 is reduced, and Fa is less than Fb; the gas blocking permanent magnet 4-11 in the latter self-excitation permanent magnet valve unit 4 slides to abut against the self-excitation gas leakage port 4-12 corresponding to the self-excitation eccentric pipe 4-1, and gas is output to the first output pipe 4-5 and the second output pipe 4-6 of the latter self-excitation permanent magnet valve unit 4; meanwhile, the gas blocking permanent magnet 4-11 in the previous self-excitation permanent magnet valve unit 4 is pushed by the gas pressure of the self-excitation gas leakage port 4-12 of the corresponding self-excitation offset pipe 4-1 to be restored to the self-excitation gas leakage port 4-12 abutting against the end closed pipe 4-4, and the gas in the gas pressure expansion pipe 4-7 in the later self-excitation permanent magnet valve unit 4 leaks out and restores to the original state, so that the sliding permanent magnet 4-9 in the later self-excitation permanent magnet valve unit 4 is also restored. The self-excitation driving module realizes that the four self-excitation air outlets (four first output pipes 4-5) output air in turn and alternately under the condition of stable air pressure flow input, thereby realizing self-excitation output. The four self-excitation air outlets of the self-excitation driving module periodically output pressurized pressure-relief airflow under the control action of the four self-excitation air outlets, so that a stable traveling wave airflow source with a certain phase difference can be output.
The four self-excitation air outlets of the self-excitation driving module are respectively connected with the four pneumatic elements 6, so that the four pneumatic elements 6 are periodically pressurized and depressurized. In this embodiment, the pneumatic element 6 is a cylinder with a spring return function; under the action of the invention, the alternating pushing-out and retracting of the four cylinders can be realized only under the input of the stable airflow source. The present invention is also applicable to crawl driving of a multi-legged robot.
Example 2
This example differs from example 1 in that: the self-energizing drive module is activated in different ways. The cross sections of self-excitation air leakage ports 4-12 on the closed tubes 4-4 at the inner ends of the four self-excitation driving modules are the same; the outer side surface (the side far away from the first fixed permanent magnet 4-10) of the sliding permanent magnet 4-9 in one of the self-excitation permanent magnet valve units 4 is fixed with a connecting rod. The connecting rod extends out of the self-excitation bracket of the self-excitation driving module;
when the self-excitation driving module is started (the driving air source 1 starts to supply air), the sliding permanent magnet 4-9 in one of the self-excitation permanent magnet valve units 4 is pulled to one side far away from the first fixed permanent magnet 4-10 by a connecting rod manually, and then the air blocking permanent magnet 4-11 in the self-excitation permanent magnet valve unit 4 starts to act, so that the self-excitation driving module is started.
Example 3
This example differs from example 2 in that: the self-energizing drive module is activated in different ways. No connecting rod is arranged; a starting electromagnet is arranged at the outer side of a second fixed permanent magnet in one self-excitation permanent magnet valve unit 4 at intervals; the starting electromagnet is fixed on the self-excitation bracket. When the starting electromagnet is electrified, the sliding permanent magnet 4-9 is attracted and moves to one side far away from the first fixed permanent magnet 4-10.
When the self-excitation driving module is started, the starting electromagnet is electrified to drive the first fixed permanent magnet 4-10 to move, and the starting of the self-excitation driving module is realized. Then, the start electromagnet is powered off.
Example 4
This example differs from example 1 in that: the self-energizing drive module is activated in different ways. The cross sections of self-excitation air leakage ports 4-12 on the closed tubes 4-4 at the inner ends of the four self-excitation driving modules are the same; the end part of the air pressure expansion pipe 4-7 in one of the self-excitation permanent magnet valve units 4 is provided with a one-way valve with an inward output port;
when the starting device is started, the input port of the one-way valve is connected with the output port of a starting air source; the gas flow output by the starting gas source is larger than the flow input by the driving gas source 1 into the self-excitation offset pipe 4-1, so that the expansion of the gas pressure expansion pipe 4-7 can be realized under the condition that the self-excitation offset pipe 4-1 is not blocked, the corresponding sliding permanent magnet 4-9 is pushed away, the sliding permanent magnet 4-9 pushes away the self-excitation permanent magnet valve unit 4 to start acting, and the starting of the self-excitation driving module is realized.
Example 5
As shown in fig. 7 and 8, the present embodiment is different from embodiment 1 in that: the self-excitation air outlets of the respective excitation permanent magnet valve units 4 are connected with an electromagnetic control valve 7.
The electromagnetic control valve 7 comprises a control valve self-excitation support 7-2, a suction closing block 7-10, a first electromagnet 7-3, a second electromagnet 7-7, a spring 7-9, a first circuit switch 7-4, a second circuit switch 7-6, a battery 7-5, a control bias pipe 7-1 and a control valve restriction opening 7-13. The attracted closed blocks 7-10 are made of ferromagnetic materials or permanent magnets. The first electromagnet 7-3 and the second electromagnet 7-7 are respectively fixed on two sides of the control valve self-excitation support 7-2. A battery 7-5 for supplying power to the first electromagnet 7-3 and the second electromagnet 7-7, a first circuit switch 7-4 for controlling the first electromagnet 7-3 and a second circuit switch 7-6 for controlling the second electromagnet 7-7 are all arranged on the control valve self-excitation bracket 7-2;
the sucked sealing block 7-10 is connected in the control valve self-excitation bracket 7-2 in a sliding manner; a plurality of third balls 7-11 are arranged between the suction closing block 7-10 and the control valve self-excitation bracket 7-2. The sucked sealing block 7-10 is connected with the inner side wall of the control valve self-excitation bracket 7-2 through a spring 7-9; the spring 7-9 enables the attracted sealing block 7-10 to be in the middle position of the first electromagnet 7-3 and the second electromagnet 7-7 in the initial state. The outer side of the control valve self-excitation bracket 7-2 is provided with a control valve restriction port 7-13. The number of the control eccentric pipes 7-1 is two. The two control eccentric pipes 7-1 pass through the control valve restriction ports 7-13. The control eccentric pipe 7-1 adopts an expansion air pipe, and the expansion air pipe expands along the radial direction when the internal air pressure is increased; when the air pressure in one control eccentric pipe 7-1 rises and rises, the other control eccentric pipe 7-1 can be extruded to be cut off.
The two control eccentric pipes 7-1 penetrate through the control valve self-excitation support 7-2 and extend out; one control deflection pipe 7-1 penetrates between the first electromagnet 7-3 and the attracted sealing block 7-10; the other control deflection pipe 7-1 penetrates between the second electromagnet 7-7 and the attracted sealing block 7-10. One side of the two control deflection pipes 7-1 close to the sucked sealing blocks 7-10 is provided with a control valve air leakage opening 7-8. The outer ends of the two control eccentric pipes 7-1 are respectively two output ports of an electromagnetic control valve. And under the condition that the air leakage ports 7-8 of the control valves of the two control offset pipes 7-1 are not blocked by the suction sealing blocks 7-10, the air input into the two control offset pipes 7-1 flows away from the air leakage ports 7-8 of the control valves. When the control valve air leakage opening 7-8 of one control offset pipe 7-1 is blocked by the suction closing block 7-10, the control offset pipe 7-1 outputs air flow. Therefore, the output air flow of any one output port in the electromagnetic control valve can be controlled by controlling the power on and off of the first electromagnet 7-3 or the second electromagnet 7-7. The inner ends of the two control eccentric pipes 7-1 are connected together to serve as air inlets of the electromagnetic control valves and are connected to self-excitation air outlets of the corresponding self-excitation permanent magnet valve units 4. The outer ends of the two control eccentric pipes 7-1 are respectively two selective air outlets of an electromagnetic control valve.
When the control valve leakage port 7-8 of one control offset pipe 7-1 is blocked and gas is input into the gas inlet of the electromagnetic control valve, the control offset pipe 7-1 expands at the control valve restriction port 7-13, so that the other control offset pipe 7-1 is pressed to be blocked, and the gas input into the electromagnetic control valve is prevented from leaking from the control valve leakage port 7-8 of the unblocked control offset pipe 7-1.
In the embodiment, different output airflow forms can be realized by switching the first electromagnet 7-3 and the second electromagnet 7-7, so that the adaptability of the air path control device to complex air path control is improved.

Claims (10)

1.一种自激励脉动气流发生装置,其特征在于:包括n个自激励永磁阀单元(4),n≥2;所述的自激励永磁阀单元(4)包括自激励阀壳、堵气永磁体(4-11)、第一固定永磁体(4-10)、第二固定永磁体(4-3)、滑动永磁体(4-9)、自激励偏管(4-1)和气压膨胀管(4-7);第二固定永磁体(4-3)、堵气永磁体(4-11)、第一固定永磁体(4-10)、滑动永磁体(4-9)依次排列安装在自激励阀壳内,且依次相互吸引;第二固定永磁体(4-3)与自激励阀壳固定;堵气永磁体(4-11)与自激励阀壳滑动连接;第一固定永磁体(4-10)与自激励阀壳固定;滑动永磁体(4-9)与自激励阀壳滑动连接;第一固定永磁体(4-10)与滑动永磁体(4-9)之间设置有气压膨胀管(4-7);1. A self-excited pulsating airflow generating device is characterized in that: comprising n self-excited permanent magnet valve units (4), n≥2; the self-excited permanent magnet valve unit (4) comprises a self-excited valve shell, Gas blocking permanent magnet (4-11), first fixed permanent magnet (4-10), second fixed permanent magnet (4-3), sliding permanent magnet (4-9), self-exciting deflection tube (4-1) and a pneumatic expansion tube (4-7); a second fixed permanent magnet (4-3), a gas blocking permanent magnet (4-11), a first fixed permanent magnet (4-10), and a sliding permanent magnet (4-9) The second fixed permanent magnet (4-3) is fixed with the self-excited valve casing; the gas blocking permanent magnet (4-11) is slidably connected with the self-excited valve casing; A fixed permanent magnet (4-10) is fixed with the self-excited valve housing; the sliding permanent magnet (4-9) is slidably connected with the self-excited valve housing; the first fixed permanent magnet (4-10) is connected with the sliding permanent magnet (4-9) A pneumatic expansion pipe (4-7) is arranged between ); 端部封闭管(4-4)和自激励偏管(4-1)的其中一端连接在一起,作为自激励永磁阀单元(4)的进气口;端部封闭管(4-4)穿过第二固定永磁体(4-3)与堵气永磁体(4-11)之间;自激励偏管(4-1)穿过堵气永磁体(4-11)与第一固定永磁体(4-10)之间;自激励偏管(4-1)和端部封闭管(4-4)靠近堵气永磁体(4-11)侧面均开有自激励漏气口(4-12);端部封闭管(4-4)的另一端封闭;自激励偏管(4-1)的另一端与第一输出管(4-5)和第二输出管(4-6)的一端连通;n个自激励永磁阀单元(4)通过第二输出管(4-6)和气压膨胀管(4-7)依次首尾相连成闭环;n个自激励永磁阀单元(4)的第一输出管(4-5)作为自激励驱动模块的n个出气口。One end of the closed end pipe (4-4) and the self-excited partial pipe (4-1) are connected together to serve as the air inlet of the self-excited permanent magnet valve unit (4); the closed end pipe (4-4) Pass through between the second fixed permanent magnet (4-3) and the gas blocking permanent magnet (4-11); the self-exciting deflection tube (4-1) passes through the gas blocking permanent magnet (4-11) and the first fixed permanent magnet (4-11). Between the magnets (4-10); the self-excited deflector (4-1) and the closed end pipe (4-4) are provided with self-excited air leakage ports (4-11) on the side near the gas blocking permanent magnet (4-11). 12); the other end of the closed end pipe (4-4) is closed; the other end of the self-exciting deflector (4-1) is connected to the first output pipe (4-5) and the second output pipe (4-6). One end is connected; n self-excited permanent magnet valve units (4) are connected end to end to form a closed loop through the second output pipe (4-6) and the pneumatic expansion pipe (4-7) in turn; n self-excited permanent magnet valve units (4) The first output pipes (4-5) are used as the n air outlets of the self-excited drive module. 2.根据权利要求1所述的一种自激励脉动气流发生装置,其特征在于:所述的自激励偏管(4-1)和端部封闭管(4-4)均能够充气膨胀;所述自激励阀壳的外侧开设有自激励约束口(4-14);自激励偏管(4-1)和端部封闭管(4-4)均穿过自激励约束口(4-14)。2. A self-excited pulsating airflow generating device according to claim 1, characterized in that: both the self-excited deflection tube (4-1) and the end closed tube (4-4) can be inflated; A self-exciting restraint port (4-14) is opened on the outer side of the self-exciting valve shell; the self-exciting deflection tube (4-1) and the end closing pipe (4-4) pass through the self-exciting restraint port (4-14) . 3.根据权利要求1所述的一种自激励脉动气流发生装置,其特征在于:其中一个自激励永磁阀单元(4)的端部封闭管(4-4)上自激励漏气口(4-12)的截面积大于其他n个自激励驱动模块内端部封闭管(4-4)上自激励漏气口(4-12)的截面积。3. A self-excited pulsating airflow generating device according to claim 1, characterized in that: the self-excited air leakage port ( The cross-sectional area of 4-12) is larger than the cross-sectional area of the self-excited air leakage ports (4-12) on the inner end closed pipes (4-4) of the other n self-excited driving modules. 4.根据权利要求1所述的一种自激励脉动气流发生装置,其特征在于:其中一个自激励永磁阀单元(4)内滑动永磁体(4-9)的外侧面与连接杆固定;连接杆伸出自激励驱动模块的自激励支架外。4. A kind of self-excited pulsating airflow generating device according to claim 1, characterized in that: the outer surface of the sliding permanent magnet (4-9) in one of the self-excited permanent magnet valve units (4) is fixed with the connecting rod; The connecting rod extends out of the self-exciting support of the self-exciting drive module. 5.根据权利要求1所述的一种自激励脉动气流发生装置,其特征在于:其中一个自激励永磁阀单元(4)内第二固定永磁体(4-3)的外侧间隔安装一个启动电磁铁;启动电磁铁固定在自激励支架上;在启动电磁铁通电时,滑动永磁体(4-9)受到吸引,移动至抵住自激励偏管(4-1)的状态。5. a kind of self-excited pulsating airflow generating device according to claim 1, is characterized in that: the outer side of the second fixed permanent magnet (4-3) in one of the self-excited permanent magnet valve units (4) is installed with a start The electromagnet; the starting electromagnet is fixed on the self-exciting support; when the starting electromagnet is energized, the sliding permanent magnet (4-9) is attracted and moves to the state of resisting the self-exciting deflection tube (4-1). 6.根据权利要求1所述的一种自激励脉动气流发生装置,其特征在于:其中一个自激励永磁阀单元(4)内气压膨胀管(4-7)上连接有一个输出口朝内的单向阀;在启动时,单向阀的输入口与一个启动气源的输出口连接;启动气源输出的气体流量大于驱动气源输入自激励偏管(4-1)的流量。6. A self-excited pulsating airflow generating device according to claim 1, characterized in that: one of the self-excited permanent magnet valve unit (4) inner air pressure expansion pipe (4-7) is connected with an output port facing inward When starting, the input port of the check valve is connected to the output port of a starting gas source; the gas flow output by the starting gas source is greater than the flow rate of the driving gas source input into the self-exciting bias tube (4-1). 7.根据权利要求1所述的一种自激励脉动气流发生装置,其特征在于:还包括自激励外框架(2)和磁屏蔽箔板(3);所述的磁屏蔽箔板(3)固定在自激励外框架(2),将自激励外框架(2)的内部分隔出n个安装腔;n个自激励永磁阀单元(4)分别安装在n个安装腔内。7. A self-excited pulsating airflow generating device according to claim 1, characterized in that: further comprising a self-excited outer frame (2) and a magnetic shielding foil plate (3); the magnetic shielding foil plate (3) It is fixed on the self-excited outer frame (2), and the interior of the self-excited outer frame (2) is divided into n installation cavities; n self-excited permanent magnet valve units (4) are respectively installed in the n installation cavities. 8.根据权利要求1所述的一种自激励脉动气流发生装置,其特征在于:自激励驱动模块的其中一个或多个出气口均连接有电磁控制阀(7);所述的电磁控制阀(7)包括控制阀支架(7-2)、受吸封闭块(7-10)、第一电磁铁(7-3)、第二电磁铁(7-7)和控制偏管(7-1);受吸封闭块(7-10)采用铁磁性材料;第一电磁铁(7-3)、第二电磁铁(7-7)分别固定在控制阀支架(7-2)的两侧;受吸封闭块(7-10)滑动连接在控制阀支架(7-2)内;控制偏管(7-1)共有两根;其中一根控制偏管(7-1)穿过第一电磁铁(7-3)与受吸封闭块(7-10)之间;另一根控制偏管(7-1)穿过第二电磁铁(7-7)与受吸封闭块(7-10)之间;两根控制偏管(7-1)靠近受吸封闭块(7-10)的一侧开设有控制阀漏气口(7-8);两根控制偏管(7-1)的内端连接在一起,作为电磁控制阀的进气口;两根控制偏管(7-1)的外端分别为电磁控制阀的两个出气口。8. A self-excited pulsating airflow generating device according to claim 1, characterized in that: one or more air outlets of the self-excited driving module are connected with an electromagnetic control valve (7); the electromagnetic control valve (7) Including a control valve bracket (7-2), a suction block (7-10), a first electromagnet (7-3), a second electromagnet (7-7) and a control bias tube (7-1) ); the suction blocking block (7-10) is made of ferromagnetic material; the first electromagnet (7-3) and the second electromagnet (7-7) are respectively fixed on both sides of the control valve bracket (7-2); The suction blocking block (7-10) is slidably connected in the control valve support (7-2); there are two control deflection tubes (7-1); one of the control deflection pipes (7-1) passes through the first electromagnetic Between the iron (7-3) and the sucked blocking block (7-10); another control deflector (7-1) passes through the second electromagnet (7-7) and the sucked blocking block (7-10) ); a control valve leakage port (7-8) is provided on the side of the two control deflection tubes (7-1) close to the suction block (7-10); the two control deflection pipes (7-1) The inner ends of the two control tubes (7-1) are connected together to serve as the air inlet of the electromagnetic control valve; the outer ends of the two control deflection tubes (7-1) are respectively the two air outlets of the electromagnetic control valve. 9.根据权利要求8所述的一种自激励脉动气流发生装置,其特征在于:受吸封闭块(7-10)与控制阀支架(7-2)的内侧壁通过弹簧(7-9)连接;控制偏管(7-1)充气能够膨胀;控制阀支架(7-2)的外侧开设有控制阀约束口(7-13);两根控制偏管(7-1)均穿过控制阀约束口(7-13)。9. A self-excited pulsating airflow generating device according to claim 8, characterized in that: the inner wall of the suction blocking block (7-10) and the control valve bracket (7-2) pass through a spring (7-9) connection; the control deflection tube (7-1) can be inflated by inflation; a control valve restraint port (7-13) is provided on the outer side of the control valve bracket (7-2); the two control deflection pipes (7-1) pass through the control valve (7-1) Valve restraint port (7-13). 10.如权利要求1所述的一种自激励脉动气流发生装置的气流发生方法,其特征在于:10. The airflow generating method of a self-excited pulsating airflow generating device as claimed in claim 1, wherein: 步骤一、向自激励驱动模块的n个的进气口输入稳定的气流;n个自激励永磁阀单元(4)的初始状态均为堵气永磁体(4-11)紧靠端部封闭管(4-4),封住了端部封闭管(4-4)上的自激励漏气口(4-12),使得输入端部封闭管(4-4)的气体不会泄露;随着气体的输入,端部封闭管(4-4)内的气压升高且开始沿径向膨胀,膨胀后的端部封闭管(4-4)在自激励约束口(4-14)内挤压自激励约束口(4-14)处被截止;堵气永磁体(4-11)收到端部封闭管(4-4)内的气压通过自激励漏气口(4-12)带来的推力,且该推力随着气体不断输出端部封闭管(4-4)而持续变大;Step 1. Input stable airflow to the n air inlets of the self-excited drive module; the initial states of the n self-excited permanent magnet valve units (4) are all gas-blocking permanent magnets (4-11) close to the ends and closed The pipe (4-4) seals the self-excitation air leakage port (4-12) on the closed end pipe (4-4), so that the gas entering the closed end pipe (4-4) will not leak; With the input of gas, the air pressure in the closed end pipe (4-4) increases and starts to expand in the radial direction, and the expanded end closed pipe (4-4) is squeezed in the self-exciting restraint port (4-14). The pressure self-excitation restraint port (4-14) is cut off; the gas blocking permanent magnet (4-11) receives the air pressure in the closed end pipe (4-4) through the self-excitation leakage port (4-12) and the thrust continues to increase as the gas continues to output the closed tube (4-4) at the end; 步骤二、其中一个自激励永磁阀单元(4)中的堵气永磁体(4-11)率先被推向第二固定永磁体(4-3);端部封闭管(4-4)的自激励漏气口(4-12)处泄露,端部封闭管(4-4)释压;自激励偏管(4-1)的自激励漏气口(4-12)被堵气永磁体(4-11)堵塞,自激励偏管(4-1)输入气体,内部气压升高且开始沿径向膨胀,膨胀后的自激励偏管(4-1)在自激励约束口(4-14)内挤压、截止端部封闭管(4-4);气体从第一输出管(4-5)和第二输出管(4-6)输出;第二输出管(4-6)输出的气体进入后一个自激励永磁阀单元(4)的气压膨胀管(4-7);第一输出管(4-5)输出的气体进入电磁控制阀或对应的驱动弹性单元(6);In step 2, the gas blocking permanent magnet (4-11) in one of the self-exciting permanent magnet valve units (4) is firstly pushed toward the second fixed permanent magnet (4-3); The self-excited air leakage port (4-12) leaks, and the closed end pipe (4-4) releases the pressure; the self-excited air leakage port (4-12) of the self-excited partial tube (4-1) is blocked by the permanent magnet (4-11) is blocked, the self-exciting deflection tube (4-1) inputs gas, the internal pressure rises and begins to expand in the radial direction, and the expanded self-exciting deflection pipe (4-1) is at the self-exciting restraint port (4-1). 14) Internal extrusion, cut-off end closed pipe (4-4); the gas is output from the first output pipe (4-5) and the second output pipe (4-6); the second output pipe (4-6) is output The gas entered into the gas pressure expansion pipe (4-7) of the latter self-exciting permanent magnet valve unit (4); the gas output by the first output pipe (4-5) enters the electromagnetic control valve or the corresponding driving elastic unit (6); 步骤三、当前一个自激励永磁阀单元(4)的第二输出管(4-6)输出的气体进入后一个自激励永磁阀单元(4)内的气压膨胀管(4-7)后,后一个自激励永磁阀单元(4)内的气压膨胀管(4-7)膨胀推开滑动永磁体(4-9),让后一个自激励永磁阀单元(4)内堵气永磁体(4-11)受到的第一固定永磁体(4-10)和滑动永磁体(4-9)的吸引合力减小,使得后一个自激励永磁阀单元(4)内堵气永磁体(4-11)滑向自激励偏管(4-1),将后一个自激励永磁阀单元(4)的自激励偏管(4-1)的自激励漏气口(4-12)堵住,使得后一个自激励永磁阀单元(4)的第一输出管(4-5)和第二输出管(4-6)输出气体;同时,前一个自激励永磁阀单元(4)内的堵气永磁体(4-11)受到对应的自激励偏管(4-1)的自激励漏气口(4-12)的气压力的推动,重新滑动到抵住端部封闭管(4-4)的自激励漏气口(4-12)的位置,使得前一个自激励永磁阀单元(4)内的自激励偏管(4-1)释压,进而让后一个自激励永磁阀单元(4)内气压膨胀管(4-7)释压恢复原状;此时,后一个自激励永磁阀单元(4)滑动永磁体(4-9)在第一固定永磁体(4-10)的吸力下复位;依此循环往复,则自激励驱动模块在稳定气压流输入的情况下,实现了自激励驱动模块的n个出气口依次交替的充压和释压。Step 3. After the gas output from the second output pipe (4-6) of the previous self-excited permanent magnet valve unit (4) enters the air pressure expansion pipe (4-7) in the next self-excited permanent magnet valve unit (4) , the air pressure expansion tube (4-7) in the latter self-exciting permanent magnet valve unit (4) expands and pushes open the sliding permanent magnet (4-9), so that the air in the latter self-exciting permanent magnet valve unit (4) is permanently blocked. The resultant attraction force of the first fixed permanent magnet (4-10) and the sliding permanent magnet (4-9) received by the magnet (4-11) is reduced, so that the latter self-excited permanent magnet valve unit (4) is blocked by the gas permanent magnet (4-11) Slide toward the self-excited deflection tube (4-1), and connect the self-excited air leakage port (4-12) of the self-excited deflection pipe (4-1) of the latter self-excited permanent magnet valve unit (4) blocked, so that the first output pipe (4-5) and the second output pipe (4-6) of the latter self-excited permanent magnet valve unit (4) output gas; at the same time, the former self-excited permanent magnet valve unit (4) ) inside the gas-blocking permanent magnet (4-11) is pushed by the air pressure of the self-excited air leakage port (4-12) of the corresponding self-excited partial tube (4-1), and slides back against the closed end tube The position of the self-exciting air leakage port (4-12) of (4-4) makes the self-exciting bias tube (4-1) in the former self-exciting permanent magnet valve unit (4) release the pressure, thereby allowing the latter self-exciting permanent magnet valve unit (4) to release the pressure. The pneumatic expansion tube (4-7) in the excitation permanent magnet valve unit (4) is released from pressure and returns to its original state; at this time, the latter self-excited permanent magnet valve unit (4) slides the permanent magnet (4-9) on the first fixed permanent magnet (4-10) Reset under the suction force of (4-10); in this cycle, the self-excited drive module realizes the alternate charging and depressurization of the n air outlets of the self-excited drive module under the condition of stable air pressure flow input.
CN202011292742.8A 2020-11-18 2020-11-18 A self-excited pulsating airflow generating device and airflow generating method thereof Active CN112682395B (en)

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