A control valve flexible connection kit
A technology of flexible connection and control valve, which is applied in the direction of valve details, valve devices, elastic couplings, etc., can solve the problem that the coaxiality between the output shaft of the actuator and the input shaft of the adjustment mechanism is difficult to ensure, so as to improve the control accuracy and use Long life, reduce processing difficulty, eliminate the effect of stuck phenomenon
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[0021] The present invention is described in detail below in conjunction with accompanying drawing:
[0022] figure 1 Schematic diagram of the structure and principle of the control valve. The actuator is hydraulically driven (electric or pneumatic as required), the lower end 9 of the piston rod of the hydraulic cylinder 1 is screwed together with the head thread 18 of the flexible connection kit 5, and the lower end of the valve stem 8 of the adjustment mechanism is connected to the lower end of the control valve. The spools 7 are connected to each other, and the upper end is made into an I-shape, and is nested in the I-shaped groove 20 of the flexible connection set 5 . When the piston 3 of the hydraulic cylinder 1 moves up and down, it will drive the spool 7 of the control valve to move up and down through the lower end 9 of the piston rod, the flexible connection kit 5 and the valve stem 8, and adjust the valve opening of the control valve.
[0023] Such as figure 2 As...
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