Pilot-operated two-way integrated cartridge compound valve with position detection

Abstract

The invention relates to a pilot-operated type two-way integrated cartridge composite valve with a position detection function. The pilot-operated type two-way integrated cartridge composite valve comprises a valve element position detector, a guide valve, a main valve control loop, a one-way valve and a work oil channel opening and closing device. The main valve control loop comprises a main valve body, a piston and a bushing. The one-way valve is composed of a spring seat, a spring, a valve element, a sealing ring and a valve seat. The work oil channel opening and closing device is composed of a transition connector, a poppet valve element, a sleeve, a compressing spring, a compressing spring seat and a connecting rod. The pilot-operated type two-way integrated cartridge composite valve has the beneficial effects that split type connection and combination design is adopted in the connecting rod, the poppet valve element and the piston, so that the valve structure is more compact, and meanwhile the machining requirement and manufacturing cost for the valve are lowered. Through an inclined hole in a piston body, the bottom face of the piston can be filled with enough control oil rapidly, and the response capacity of the valve is improved. Through the shrinkage shape of the cup-shaped outer edge of the poppet valve element and the bottom conical face, the control boundary structure of the valve is improved, hydraulic impacts generated when the valve is opened and closed are greatly reduced, and the damage of the hydraulic impacts is reduced to the minimum.

Description

Technical field: [0001] The invention relates to a fluid-operated system, in particular to a pilot-operated two-way integrated cartridge compound valve with position detection. Background technique: [0002] In the prior art, the pilot-operated two-way cartridge compound valve is composed of a pilot valve, a one-way valve and a two-way cartridge valve, and the opening and closing of the two-way cartridge valve is guided by the action of the pilot valve. Due to structural limitations, while ensuring the same guiding area of ​​the two-way cartridge valve, the flow rate of the existing pilot-operated two-way cartridge compound valve is relatively small, so that in the case of high flow rate, the pressure drop is large and the heat generation is high. The disadvantage of this structural form is that the degree of integration is low, and the connection between the valves needs to rely on external pipeline connections, which is not only bulky, but also has large pipeline flow resi...

AI Technical Summary

Problems solved by technology

Due to structural limitations, while ensuring the same guide area of ​​the two-way cartridge valve, the flow rate of the existing pilot-operated two-way cartridge compound valve is relatively small, so that in the case of high flow rate, the pressure drop is large and the heat generation is high.

The disadvantage of this structural form is that the degree of integration is low, and the connection between the valves needs to rely on external pipeline connections, which is not only bulky, but also has large pipeline flow resistance and large pressure loss, and the possibility of leakage due to too many connection points also greatly increased

Obviously, the existing pilot-operated two-way cartridge valve can no longer meet the needs of the market and needs to be improved

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