Gas circuit for pneumatic actuator
A pneumatic actuator and gas circuit technology, applied in the direction of engine components, mechanical equipment, valve operation/release devices, etc., can solve the problems of the influence of the flow capacity of the gas circuit, the impact of the position valve on the full stroke time, etc., to ensure the flow effect of ability
Pending Publication Date: 2020-12-11
JIANGNAN VALVE
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Problems solved by technology
[0004] The existing air path for pneumatic actuators uses a lock-up valve (safety valve) to achieve air loss protection, but it has a relatively large impact on the flow capacity of the air path, especially for fast action required under normal working conditions. , the flow capacity of the retaining valve itself seriously affects the full stroke time
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[0018] In the following description, similar components are denoted by the same reference numerals, and the terms of direction are only used to illustrate the relative positional relationship between the components, and should not limit the technical scope of the present invention.
[0019] Such as figure 1 As shown, the air circuit for the pneumatic actuator of the present invention includes an air intake unit 1, a positioning unit, a valve unit and a pneumatic actuator 9 connected in series on the air source connecting pipeline. The gas source connection pipeline is made of 304 stainless steel.
[0020] The air intake unit 1 is connected to an air source, and includes a decompression module, a filter module and an oil mist module connected in series. The decompression module is used to stabilize the pressure of the gas provided by the gas source, the filter module is used to filter the moisture or sundries in the gas, and the oil mist module is used to atomize the lubricat...
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The invention provides a gas circuit for a pneumatic actuator. The gas circuit for the pneumatic actuator comprises an air inlet unit, a positioning unit, a valve unit and the pneumatic actuator whichare connected in series on an air source connecting pipeline; the air inlet unit is connected with the air source; the valve unit comprises two pneumatic control valves for air inlet and air outlet respectively; the positioning unit is used for realizing the adjustment of the valve unit and comprises a power-off pneumatic locking module and a gas-off pneumatic locking module; the power-off pneumatic locking module can play a pneumatic locking role in power failure or blackout; the two ends of the power-off pneumatic locking module are respectively connected with the air source and the pneumatic control valves; the gas-off pneumatic locking module can play a pneumatic locking in air failure or when the air source is cut off; and one end of the gas-off pneumatic locking module is connectedwith the power-off pneumatic locking module, the other end of the gas-off pneumatic locking module is connected between the air inlet unit and the valve unit, and the third end of the gas-off pneumatic locking module is connected to the air source. Therefore, the positioning unit can provide a pneumatic locking function when power and gas are cut off.
Description
technical field [0001] The invention relates to a pneumatic actuator, in particular to an air circuit for a pneumatic actuator. Background technique [0002] Pneumatic actuators are automatic actuators powered by compressed air. Through the received signal, the flow rate of the regulating fluid is directly changed to realize the automation of the production process. However, various emergencies often occur during the production process, such as power failure or air source failure. At this time, it is necessary to automatically close the air path to the pneumatic actuator to maintain the current valve opening. [0003] The air path of commonly used pneumatic actuators is as follows: figure 2 As shown, to realize the functions of three-break protection and power-off protection, the solenoid valve 01 must be equipped, the lock valve 02 (safety valve) should be installed for the air-off protection, and the protection terminal box 03 should be installed for the signal-off prote...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16K31/124F17D1/02F17D3/01F17D5/00
CPCF16K31/1245F17D1/02F17D3/01F17D5/005
Inventor 王晓峰吴海建杨铭林崇诚杨繁隆陆欢
Owner JIANGNAN VALVE