CN213686208U - Dynamic compensation air cylinder and automatic gas saving equipment - Google Patents

Abstract

The application discloses dynamic compensation gas receiver, automatic gas saving equipment, dynamic compensation gas receiver includes: a barrel; the spring is arranged in the cylinder body, and one end of the spring is connected with the cylinder body; the exhaust hole is arranged on the side wall of the cylinder body and is arranged at one side adjacent to the spring; the piston is arranged in the cylinder, one side of the piston is connected with the free end of the spring, and the other side of the piston and the inner wall of the cylinder enclose an air storage cavity; the three-way joint is arranged on one side of the barrel body far away from the spring, the three-way joint comprises an air inlet, an air outlet and an air vent, the air inlet is communicated with the air storage cavity through the air vent, and the air outlet is communicated with the air storage cavity through the air vent. The application provides a dynamic compensation gas receiver, automatic gas saving equipment, aims at solving among the prior art gas saving equipment and can't reduce the problem of gas consumption in production, the course of working when promoting production efficiency.

Description

Dynamic compensation air cylinder and automatic gas saving equipment

Technical Field

The application relates to the field of gas saving equipment, in particular to a dynamic compensation air cylinder and automatic gas saving equipment.

Background

In the welding and hot working industries, on the premise of ensuring the product quality and performance, how to save the gas consumption in the production and processing process to the maximum extent, so as to achieve the purposes of reducing the product manufacturing cost, improving the profit margin and reducing the environmental pollution, and the problem to be solved is urgent at present.

Content of application

The main purpose of this application is to provide a dynamic compensation gas receiver, automatic gas saving equipment, aims at solving among the prior art gas saving equipment and can't reduce the gas consumption's in production, the course of working when promoting production efficiency problem.

In order to achieve the above object, the present application provides a dynamic compensation air cylinder, which includes:

a barrel;

the spring is arranged in the cylinder body, and one end of the spring is connected with the cylinder body;

the exhaust hole is arranged on the side wall of the cylinder body and is arranged on one side adjacent to the spring;

the piston is arranged in the cylinder, one side of the piston is connected with the free end of the spring, and the other side of the piston and the inner wall of the cylinder enclose an air storage cavity;

three way connection sets up and is keeping away from the spring barrel one side, three way connection includes air inlet, gas outlet and blow vent, the air inlet pass through the blow vent with the gas storage chamber intercommunication, the gas outlet pass through the blow vent with the gas storage chamber intercommunication.

Optionally, the piston is moved to make the exhaust hole and the air storage cavity be communicated or closed.

To achieve the above object, the present application provides an automatic throttle apparatus including an air supply and an air consuming apparatus, the automatic throttle apparatus further including a dynamic compensation air cylinder according to any one of the above embodiments, the automatic throttle apparatus further including:

the adjustable flow-limiting air throttle comprises a first air inlet joint and a first air outlet joint, and the first air inlet joint is connected with the air source;

the first air outlet connector is connected with the dynamic compensation air cylinder, and the dynamic compensation air cylinder is connected with the gas-using equipment.

Optionally, the adjustable flow restricting damper further comprises:

and the adjusting knob is arranged between the first air inlet joint and the first air outlet joint, and the flow of the air output by the air source is controlled by rotating the adjusting knob clockwise or anticlockwise.

Optionally, the automatic throttle apparatus further comprises:

the mass flow controller is arranged between the adjustable flow-limiting air throttle and the dynamic compensation air cylinder and comprises a second air inlet connector and a second air outlet connector, the second air inlet connector is connected with the first air outlet connector, and the second air outlet connector is connected with the dynamic compensation air cylinder.

Optionally, the automatic throttle apparatus further comprises:

the ultrahigh frequency electromagnetic valve is arranged between the mass flow controller and the dynamic compensation air cylinder and comprises a third air inlet connector and a third air outlet connector, the third air inlet connector is connected with the second air outlet connector, and the third air outlet connector is connected with the air inlet.

Optionally, the automatic throttle apparatus further comprises:

the current sensor is arranged in the gas-using equipment and used for acquiring a current signal of the gas-using equipment;

and the single chip microcomputer is connected with the current sensor, processes the current signal acquired by the current sensor to obtain a control signal, and sends the control signal to the mass flow controller.

Optionally, the automatic throttle apparatus further comprises:

the single chip microcomputer is connected with the ultrahigh frequency electromagnetic valve, and the single chip microcomputer controls the ultrahigh frequency electromagnetic valve to be opened or closed.

Optionally, the automatic throttle apparatus further comprises:

the mass flow controller, the single chip microcomputer, the ultrahigh frequency electromagnetic valve and the current sensor are all arranged in the case, and the case is of an integrated structure;

and the control panel is connected with the single chip microcomputer.

Optionally, the automatic throttle apparatus further comprises:

a power adapter including a power plug, a first wire, a second wire, and a third wire; the power plug is connected with 220V mains supply; the first lead is connected with the mass flow controller; the second wire is connected with the single chip microcomputer; the third wire is connected with the current sensor.

Among the technical scheme that this application provided, be connected through one side of piston and the free end of spring, the opposite side of piston encloses into the gas storage chamber with the inner wall of barrel, and the gas storage chamber can save surplus gas, can reduce gas consumption in production, the course of working to, the exhaust hole of setting on the lateral wall of barrel can realize gas excessive pressure self preservation and protect the function. Meanwhile, the surplus gas stored in the dynamic compensation gas storage cylinder structure can be directly sent to the gas utilization equipment under the condition that the gas utilization equipment is insufficient in gas, so that gas is fed in advance, and the production efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of a dynamic compensation air cylinder according to the present application;

FIG. 2 is a schematic view of an automatic throttle apparatus according to the present application;

FIG. 3 is a schematic view of an adjustable flow restrictor damper according to the present disclosure;

FIG. 4 is a schematic diagram of a mass flow controller according to the present application;

fig. 5 is a schematic structural diagram of an ultrahigh frequency solenoid valve according to the present application.

The reference numbers illustrate:

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the embodiment of the present application are only used to explain the relative position relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.

In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, technical solutions between the various embodiments of the present application may be combined with each other, but it must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should be considered to be absent and not within the protection scope of the present application.

The application provides a dynamic compensation air cylinder 100 and an automatic air saving device.

Referring to fig. 1, the dynamic compensation air cylinder 100 includes:

a cylinder 110;

a spring 120 disposed in the cylinder 110, wherein one end of the spring 120 is connected to the cylinder 110;

a discharge hole 130 provided on a side wall of the cylinder 110, the discharge hole 130 being provided at a side adjacent to the spring 120;

a piston 140 disposed in the cylinder 110, wherein one side of the piston 140 is connected to the free end of the spring 120, and the other side of the piston 140 and the inner wall of the cylinder 110 enclose an air storage chamber 160;

three way connection 150, the setting is keeping away from spring 120 barrel 110 one side, three way connection 150 includes air inlet 151, gas outlet and blow vent, air inlet 151 pass through the blow vent with gas storage chamber 160 intercommunication, the gas outlet pass through the blow vent with gas storage chamber 160 intercommunication.

In the technical scheme provided by the application, one side of the piston 140 is connected with the free end of the spring 120, the other side of the piston 140 and the inner wall of the cylinder 110 enclose a gas storage cavity 160, the gas storage cavity 160 can store surplus gas, the gas consumption in the production and processing processes can be reduced, and the exhaust hole 130 arranged on the side wall of the cylinder 110 can realize the gas overpressure self-protection function. Meanwhile, the surplus gas stored in the dynamic compensation gas storage cylinder 100 structure can be directly sent to the gas utilization equipment 300 under the condition that the gas utilization equipment 300 is insufficient, so that the gas can be supplied in advance, and the production efficiency is improved.

Further, referring to fig. 1, in an embodiment of the present invention, the piston 140 is moved to make the exhaust hole 130 and the air storage chamber 160 open or close.

In the technical solution adopted in this embodiment, the gas is input from the gas inlet 151 and output from the gas outlet. When the gas consumption device 300 consumes gas with a flow rate greater than or equal to the gas input flow rate, the gas outlet cylinder piston 140 moves leftwards due to the action of the spring 120, so that the gas storage cavity 160 compensates the gas consumption device 300 for the required flow rate; when the gas consumption device 300 consumes gas with a flow rate smaller than the gas input flow rate, the surplus gas is stored in the gas storage cavity 160; when the gas in the gas storage cavity 160 is more and more, and the gas pressure in the gas storage cavity 160 is too high, so that the generated reaction thrust is greater than the tension of the spring 120, the spring 120 is continuously compressed rightwards, and when the left end surface of the piston 140 exceeds the vent hole 130, the vent hole 130 releases the pressure, so that the redundant gas is discharged, and the potential safety hazard caused by the increase of the gas pressure is prevented; when the gas storage cavity 160 has gas pressure reaction force larger than the tension of the spring 120 and drops, the spring 120 pushes the piston 140 to move left to close the exhaust hole 130 again, and the cycle is repeated, so that gas dynamic compensation is realized.

Referring to fig. 2, the automatic throttle device includes an air source 200 and an air consuming device 300, and the automatic throttle device further includes a dynamic compensation air cylinder 100 according to any of the above embodiments, and the specific structure of the dynamic compensation air cylinder 100 refers to the above embodiments, and since the dynamic compensation air cylinder 100 adopts all technical solutions of all the above embodiments, the automatic throttle device at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.

The automatic throttle apparatus further includes:

an adjustable flow-limiting damper 400, comprising a first air inlet joint 410 and a first air outlet joint 420, wherein the first air inlet joint 410 is connected with the air source 200;

the first air outlet joint 420 is connected with the dynamic compensation air cylinder 100, and the dynamic compensation air cylinder 100 is connected with the gas-using equipment 300.

In the technical scheme adopted by the embodiment, the adjustable flow-limiting throttle valve 400 can limit the instantaneous peak flow of the gas after pressure reduction, eliminate the waste of gas caused by the 'gas surge phenomenon' at the moment of opening the valve of the gas using equipment 300, and reduce the influence of the pressure change of the gas source 200 on the gas supply pressure and flow of the pressure reducer 210 to the minimum. The pressure reducer 210 is disposed between the air supply 200 and the adjustable flow restricting damper 400. The dynamic compensation air cylinder 100 carries out peak clipping and valley filling processing on the airflow output by the adjustable current-limiting air throttle 400, and plays roles of storing surplus airflow and supplementing insufficient airflow at a terminal simultaneously, in addition, when the terminal gas-using equipment 300 is started, because the gas source 200 is still in a closed state, the gas in the dynamic compensation air cylinder 100 can be discharged immediately, and the requirement of advanced gas supply of the terminal equipment is met.

Specifically, in the prior art, the air source 200 is always connected with the buffer tank to play a role of saving air. However, the buffer tank has the following disadvantages: the buffer tank has overlarge volume and is fussy to install on site; because the buffer tank belongs to the pressure container, strict management is needed on site when the buffer tank is used (the pressure gauge of the buffer tank needs to be regularly calibrated and the like), and the management cost is increased; the use of the buffer tank requires modification of the existing pipeline system of the customer; the gas pressure in the buffer tank is a constant value. In this technical scheme, adopt adjustable current-limiting throttle valve 400 to replace the buffer tank. The adjustable flow-limiting air throttle 400 is small in size and simple and convenient to install, and the gas flow can be adjusted in a stepless mode within a measuring range, so that different requirements in specific use scenes are met. In addition, the structure of the adjustable flow-limiting air throttle 400 does not belong to a pressure container, so that verification is not needed, and customer management is more convenient. Meanwhile, the adjustable flow-limiting air throttle 400 does not need to change the existing air path system of a client, the system construction cost is low, the production cost of automatic air throttle equipment can be effectively reduced, and the profit margin is improved. The common adjustable flow-limiting throttle valve 400 on the market comprises a GCE GS40 pressure reducer 210 and the like, and the adjustable range of the maximum flow is 0-30l/min, 0-50l/min and the like. The high-pressure gas with the gas source 200 being more than or equal to 7MPa is reduced to 0.3-0.4 MPa through the pressure reducer 210, and the adjustable flow-limiting throttle valve 400 limits the peak value of the gas surge flow generated by instantly opening the gas valve to 30l/min at 90 l/min. The gas-using apparatus 300 includes a workpiece 320 and a welding gun 310.

Further, referring to fig. 3, in an embodiment of the present invention, the adjustable flow-limiting damper 400 further includes:

and an adjusting knob disposed between the first inlet connector 410 and the first outlet connector 420, wherein the flow rate of the gas output by the gas source 200 is controlled by rotating the adjusting knob clockwise or counterclockwise.

In the technical scheme adopted in this embodiment, the flow rate of the gas output by the gas source 200 is controlled by rotating the adjusting knob clockwise or counterclockwise, and waste caused by excessive gas can be effectively reduced. After the adjustable flow-limiting throttle valve 400 is used, the gas consumption can be saved by more than 20% under the same production condition, and the gas can be saved even by more than 40% under the production state of frequently opening/closing the gas.

Further, referring to fig. 4, in an embodiment of the present invention, the automatic throttle apparatus further includes:

and the mass flow controller 500 is arranged between the adjustable flow-limiting throttle valve 400 and the dynamic compensation air cylinder 100, the mass flow controller 500 comprises a second air inlet joint 510 and a second air outlet joint 520, the second air inlet joint 510 is connected with the first air outlet joint 420, and the second air outlet joint 520 is connected with the dynamic compensation air cylinder 100.

In the technical solution adopted in this embodiment, the mass flow controller 500 further includes a first cable 530 electrically connected to other devices, and the mass flow controller 500 uses two factors of mass and flow to check each other to realize closed-loop, accurate and automatic control of the gas flow, so that even if there is fluctuation in system pressure or there is a change in ambient temperature, the gas flow will not deviate from the set value. Gas mass flow controller 500 and flow meter operating principle: the flow sensor measures the mass flow of the gas using the capillary heat transfer temperature differential calorimetry principle (without temperature and pressure compensation). The flow signal measured by the sensor heating bridge is sent to an amplifier for amplification, the amplified flow measurement voltage is compared with a set voltage, the difference signal is amplified and then is used for controlling the regulating valve, the flow passing through is controlled through closed-loop control, and the flow is enabled to be equal to the set flow. The flow divider determines the flow rate of the main channel. The voltage sensed by the flow rate output by the controller is proportional to the mass of gas flowing through the passageway. Thus, mass flow controller 500 can act as a meter to accurately measure gas flow; the user can set the flow rate according to the requirement, and the mass flow controller 500 automatically keeps the flow rate constant at the set value; the mass flow controller 500 can also receive the current signal to realize dynamic control of the gas flow, which means that the gas flow is effectively controlled by using the function. MFC (gas mass flow controller) has the following advantages: the mass flow of the gas is directly measured without other auxiliary instruments and meters and conversion calculation errors; the movable part without a rotating shaft has high reliability and does not need mechanical maintenance; the micro flow can be accurately measured; the measurement and control are automatically changed and integrated; accurately determining the flow rate for controlling the flow rate; the accuracy and the repeatability are high and stable; small size and convenient installation and operation. The dynamic compensation air cylinder 100 performs peak clipping and valley filling processing on the air flow output by the mass flow controller 500, and plays roles of storing surplus air flow and supplementing insufficient air flow of the terminal at the same time, in addition, when the terminal air-using device 300 is started, because the air source 200 is still in a closed state, the air in the dynamic compensation air cylinder 100 can be discharged immediately, and the requirement of advanced air supply of the terminal device is met.

Further, referring to fig. 5, in an embodiment of the present invention, the automatic throttle apparatus further includes:

the ultrahigh frequency solenoid valve 600 is disposed between the mass flow controller 500 and the dynamic compensation air cylinder 100, the ultrahigh frequency solenoid valve 600 includes a third air inlet joint 610 and a third air outlet joint 620, the third air inlet joint 610 is connected with the second air outlet joint 520, and the third air outlet joint 620 is connected with the air inlet 151.

In the technical solution adopted in this embodiment, the ultrahigh frequency solenoid valve 600 further includes a first cable 630 electrically connected to other devices, and the working principle of the ultrahigh frequency solenoid valve 600 is as follows: when the valve is electrified, the electromagnetic coil generates electromagnetic force to lift the closing piece from the valve seat, and the valve is opened; when power is off, the spring 120 presses the closure member against the valve seat and the valve closes. By controlling the on/off frequency, the gas can be output intermittently at corresponding frequency. The ultrahigh frequency electromagnetic valve has various brands and types, is famous as SX10 series of Japanese SMC company, has the flow of 50l/min, the frequency of 1200Hz and the service life of 50 hundred million times, and in the application, the technical scheme can be realized by adopting the SX10 series ultrahigh frequency electromagnetic valve 600. The dynamic compensation air cylinder 100 carries out peak clipping and valley filling processing on the airflow output by the adjustable current-limiting air throttle 400, and plays roles of storing surplus airflow and supplementing insufficient airflow at a terminal simultaneously, in addition, when the terminal gas-using equipment 300 is started, because the gas source 200 is still in a closed state, the gas in the dynamic compensation air cylinder 100 can be discharged immediately, and the requirement of advanced gas supply of the terminal equipment is met.

Further, referring to fig. 1, in an embodiment of the present invention, the automatic throttle apparatus further includes:

the current sensor 700 is arranged in the gas-using equipment 300 and is used for acquiring a current signal of the gas-using equipment 300;

the single chip microcomputer 800 is connected with the current sensor 700, processes the current signal acquired by the current sensor 700 to obtain a control signal, and sends the control signal to the mass flow controller 500;

and the control panel 810 is connected with the single chip microcomputer 800.

Specifically, the prior art automatic throttle apparatus has the following disadvantages: the gas peak waste during arcing cannot be eliminated; in the using process, the gas flow is controlled by the current signal value of welding equipment, the matched gas flow value is instantaneous and dynamic due to the real-time change of the current signal, a gas flow velocity and flow curve graph is a rigid broken line, and the reaction delay problem of equipment components and parts is solved; the function of achieving a constant flow output of gas by analog current setting is lacking.

The current sensor 700 is a high sensitivity current sensor 700. The high-sensitivity current sensor 700 feeds back a current signal (welding current) of the terminal gas-using equipment 300 to the single chip microcomputer 800 in real time, and the single chip microcomputer 800 automatically outputs a control signal to the mass flow controller 500 according to a calculation program selected by the control panel 810; the mass flow controller 500 dynamically matches the gas flow in a closed loop, the gas using equipment 300 matches the high gas flow when using a large current, the gas using equipment 300 matches the low gas flow when using a small current, and when the gas using equipment 300 has no current, the mass flow controller 500 automatically and quickly closes according to a control program of the single chip microcomputer 800 or closes the gas according to a set value delay, so as to supplement the gas for the dynamic compensation gas storage cylinder 100.

The dynamic compensation air cylinder 100 carries out peak clipping and valley filling processing on the air flow output by the ultrahigh frequency electromagnetic valve 600, and meanwhile, the effects of storing surplus air flow and supplementing insufficient air flow at the terminal are achieved, in addition, when the terminal air device 300 is started, the current sensor 700 does not detect that the current signal quality flow controller 500 is in a closed state in advance, the air in the dynamic compensation air cylinder 100 can be discharged immediately, and the requirement that the terminal device supplies air in advance is met. According to the principle, a customer can determine whether gas compensation time is set for the adjustable current-limiting throttle valve 400, the mass flow controller 500 and the ultrahigh frequency electromagnetic valve 600 according to actual use conditions; keep storing certain volume gas in the gas outlet cylinder, when the gas equipment 300 valve open the moment, gas can be got rid of in the gas outlet cylinder in real time, realizes the function of automatic advance gas supply before the processing of gas equipment 300.

Further, referring to fig. 1, in an embodiment of the present invention, the automatic throttle apparatus further includes:

the single chip microcomputer 800 is connected with the ultrahigh frequency electromagnetic valve 600, and the single chip microcomputer 800 controls the ultrahigh frequency electromagnetic valve 600 to be opened or closed.

In the technical scheme adopted in the embodiment, the singlechip 800 controls the ultrahigh frequency electromagnetic valve 600 to be opened or closed, the ultrahigh frequency electromagnetic valve 600 is used for performing ultrahigh frequency opening/closing operation on the air flow, the gas is discharged in a 'smoke ring' mode, the air in a welding area is isolated from entering a molten pool, and the waste of the gas caused by the constant and continuous discharge of the traditional gas is eliminated.

Further, referring to fig. 1, in an embodiment of the present invention, the automatic throttle apparatus further includes:

the mass flow controller 500, the single chip microcomputer 800, the ultrahigh frequency electromagnetic valve 600 and the current sensor 700 are all arranged in the case, and the case is of an integrated structure.

In the technical scheme adopted by the embodiment, in order to save space and facilitate carrying, the mass flow controller 500, the single chip microcomputer 800, the ultrahigh frequency electromagnetic valve 600 and the current sensor 700 are integrated into an integrated chassis, and the integrated chassis has the functions of moisture protection, shock prevention and dust prevention.

Further, referring to fig. 1, in an embodiment of the present invention, the automatic throttle apparatus further includes:

a power adapter 900, said power adapter 900 comprising a power plug, a first wire, a second wire and a third wire; the power plug is connected with 220V mains supply; the first lead is connected to the mass flow controller 500; the second wire is connected with the single chip microcomputer 800; the third wire is connected to the current sensor 700.

In the technical scheme adopted in this embodiment, in order to enable the device to operate stably within a safe voltage, the present application is implemented in a manner that the power adapter 900 is connected to the mass flow controller 500, the single chip microcomputer 800, and the current sensor 700.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications and equivalents of the technical solutions that can be directly or indirectly applied to other related fields without departing from the spirit of the present application are intended to be included in the scope of the present application.

Claims (10)

1. A dynamic compensation air cylinder, comprising:

a barrel;

the spring is arranged in the cylinder body, and one end of the spring is connected with the cylinder body;

the exhaust hole is arranged on the side wall of the cylinder body and is arranged on one side adjacent to the spring;

the piston is arranged in the cylinder, one side of the piston is connected with the free end of the spring, and the other side of the piston and the inner wall of the cylinder enclose an air storage cavity;

three way connection sets up and is keeping away from the spring barrel one side, three way connection includes air inlet, gas outlet and blow vent, the air inlet pass through the blow vent with the gas storage chamber intercommunication, the gas outlet pass through the blow vent with the gas storage chamber intercommunication.

2. The dynamically compensating air cylinder of claim 1,

and the piston enables the exhaust hole and the air storage cavity to be communicated or closed in the moving process.

3. An automatic throttle apparatus including an air supply and an air consuming apparatus, characterized by further comprising the dynamically compensating air cylinder as recited in any one of claims 1 to 2, the automatic throttle apparatus further comprising:

the adjustable flow-limiting air throttle comprises a first air inlet joint and a first air outlet joint, and the first air inlet joint is connected with the air source;

the first air outlet connector is connected with the dynamic compensation air cylinder, and the dynamic compensation air cylinder is connected with the gas-using equipment.

4. The automatic throttle apparatus of claim 3, wherein the adjustable restriction throttle valve further comprises:

and the adjusting knob is arranged between the first air inlet joint and the first air outlet joint, and the flow of the air output by the air source is controlled by rotating the adjusting knob clockwise or anticlockwise.

5. The automatic throttle apparatus according to claim 3, characterized by further comprising:

the mass flow controller is arranged between the adjustable flow-limiting air throttle and the dynamic compensation air cylinder and comprises a second air inlet connector and a second air outlet connector, the second air inlet connector is connected with the first air outlet connector, and the second air outlet connector is connected with the dynamic compensation air cylinder.

6. The automatic throttle apparatus according to claim 5, characterized by further comprising:

the ultrahigh frequency electromagnetic valve is arranged between the mass flow controller and the dynamic compensation air cylinder and comprises a third air inlet connector and a third air outlet connector, the third air inlet connector is connected with the second air outlet connector, and the third air outlet connector is connected with the air inlet.

7. The automatic throttle apparatus according to claim 6, characterized by further comprising:

the current sensor is arranged in the gas-using equipment and used for acquiring a current signal of the gas-using equipment;

and the single chip microcomputer is connected with the current sensor, processes the current signal acquired by the current sensor to obtain a control signal, and sends the control signal to the mass flow controller.

8. The automatic throttle apparatus according to claim 7, characterized by further comprising:

the single chip microcomputer is connected with the ultrahigh frequency electromagnetic valve, and the single chip microcomputer controls the ultrahigh frequency electromagnetic valve to be opened or closed.

9. The automatic throttle apparatus according to claim 7, characterized by further comprising:

the mass flow controller, the single chip microcomputer, the ultrahigh frequency electromagnetic valve and the current sensor are all arranged in the case, and the case is of an integrated structure;

and the control panel is connected with the single chip microcomputer.

10. The automatic throttle apparatus according to claim 7, characterized by further comprising:

a power adapter including a power plug, a first wire, a second wire, and a third wire; the power plug is connected with 220V mains supply; the first lead is connected with the mass flow controller; the second wire is connected with the single chip microcomputer; the third wire is connected with the current sensor.

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