A fast and slow actuator based on vacuum pump application and its control method
A control method and actuator technology, which are applied to servo motors, servo motor components, mechanical equipment, etc., can solve the problems of high cost of electro-hydraulic proportional systems, small flow rate of proportional valves, and low speed regulation accuracy, and achieve simple structure and flow rate. The effect of fast speed and high precision of speed regulation
Active Publication Date: 2020-10-09
CHENGDU HUAKE VALVE MFG
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Problems solved by technology
Commonly used solutions: use electro-hydraulic proportional valves to drive 90-degree double-acting actuators to achieve the above functions, but the cost of electro-hydraulic proportional systems is high; the flow rate of proportional valves is small and the speed is slow; the accuracy of speed regulation is low
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[0029] Such as figure 1 As shown, the present invention is a fast and slow actuator based on vacuum pump application, including an oil tank 1 and an actuator 7, the oil tank 1 is used to store pressure oil, the actuator 7 is the prior art, and the actuator 7 adopts 90 °Double-acting actuator, and the speed regulating circuit of the actuator 7 is an oil return speed regulating circuit, the actuator 7 is connected with the butterfly valve to be controlled, and the actuator 7 is used to control the opening and closing of the butterfly valve, and the actuator 7 includes A cavity and Chamber B; the fuel tank 1 is provided with a first solenoid valve 2, the first solenoid valve 2 is a two-position four-way solenoid valve, and the first solenoid valve 2 includes an oil inlet 3, a first passage 4, a second passage 8 and The third channel, the fuel tank 1 is connected to the third channel, the first channel 4 is communicated with the A cavity of the actuator 7, and the second channel 8...
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The invention discloses a fast-speed and slow-speed actuator based on vacuum pump application. The fast-speed and slow-speed actuator based on the vacuum pump application comprises an oil tank and anactuator body connected with a butterfly valve, wherein the actuator body comprises an A cavity and a B cavity; a first electromagnetic valve is arranged on the oil tank; the first electromagnetic valve comprises an oil inlet, a first channel and a second channel; and the first channel and the second channel of the first electromagnetic valve communicate with the A cavity and the B cavity of the actuator body correspondingly; the first channel is provided with a first one-way throttling speed regulating valve and a plurality of second electromagnetic valves which are sequentially connected with the first one-way throttling speed regulating valve in parallel, and the second channel is provided with a second one-way throttling speed regulating valve and a plurality of third electromagnetic valves which are sequentially connected with the second one-way throttling speed regulating valve in parallel. According to the invention, through controlling the sequence and time of power supply andpower loss of each electromagnetic valve, the fast front and slow rear or the slow front and fast rear of the whole process can be realized so as to meet the different using requirements of the actuator body; and meanwhile, the multi-speed function of on-off full stroke of the actuator body can be realized by changing the quantity of the second electromagnetic valves and the third electromagneticvalves.
Description
technical field [0001] The invention relates to the technical field of vacuum pumps, in particular to a fast and slow actuator based on vacuum pump applications. Background technique [0002] In the process of producing oxygen or nitrogen with vacuum pressure swing adsorption (VPSA) air separation technology in China, when the adsorbent needs to be regenerated, the gas pressure in the adsorption tower needs to be pumped from 50KPa (G) to -50KPa (G) with a vacuum pump. Vacuum state: the vacuum pump works continuously, when its inlet is switched from the vacuum state to the 50KPa (G) state, due to the sharp increase in mass density, the load of the vacuum pump increases sharply, which may easily cause the vacuum pump to be overloaded and malfunction; therefore, it is necessary to pass the butterfly valve at the inlet of the vacuum pump Opening to adjust the vacuum pump load. According to the characteristics of the vacuum pump, when its inlet is switched from the vacuum state ...
Claims
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IPC IPC(8): F15B11/08F15B13/02
Inventor 鲍巧灵刘国强杨炯波
Owner CHENGDU HUAKE VALVE MFG