Threaded cartridge valve direction control valve DHF08-230 hydraulic valve

Introduction to hydraulic threaded cartridge valves

            Hydraulic screw cartridge valve is also called screw cartridge valve, its installation method is to screw directly into the jack of the valve block, installation and disassembly is simple and quick, generally by the valve sleeve, valve core, valve body, seals, control parts (spring seat, spring, adjusting screw, magnetic body, electromagnetic coil, spring washer, etc.) composition. In general, the valve sleeve and the valve core and the threaded part of the valve body are screwed into the valve block, and the rest of the valve body is outside the valve block. Specifications are two, three, four and other threaded cartridge valves, diameter from 3mm to 32mm, high pressure up to 63MPa, large flow up to760L/min. Directional valves include check valve, hydraulic control check valve, shuttle valve, hydraulic reversing valve, manual reversing valve, solenoid slide valve, solenoid ball valve, etc. The pressure valve has relief valve, pressure reducing valve, sequence valve, balance valve, pressure difference relief valve, load sensitive valve, etc. The flow valve has throttle valve, speed regulating valve, shunt collecting valve, priority valve and so on.

         The application in hydraulic pump

     The early threaded cartridge valves were used in hydraulic pumps. Because the hydraulic pump needs to integrate the hydraulic valve, which requires the hydraulic valve to be small, so the threaded cartridge relief valve has been developed. It should be said that the threaded cartridge relief valve is the early development and application of the threaded cartridge valve, and then the threaded cartridge check valve and the threaded cartridge throttle valve are applied in the hydraulic pump. Modern hydraulic pumps have many threaded cartridge valves integrated in them, the structure and schematic diagram of a closed variable pump is shown in Figure 3, there are more than a dozen threaded cartridge valves integrated in them. The screw insert relief valve is used to adjust the high pressure of the main hydraulic pump and the refill pump. Threaded cartridge check valve is used to control the opening or cutting of the oil circuit; Threaded plug type stop valve is used to connect A and B oil ports when the system fails, to facilitate the dragging or traction of construction machinery; The screw insert differential pressure relief valve is used to adjust the output pressure of the pump to change with the load pressure. With the continuous progress of threaded cartridge valve technology, a multi-function valve specially designed for pump has been developed, which integrates the functions of 4 valves, such as threaded cartridge relief valve, threaded cartridge differential pressure relief valve, threaded cartridge check valve and threaded cartridge globe valve I can.