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Large-diameter proportional water valve for heavy equipment

A technology of proportional water valves and heavy equipment, applied in mechanical equipment, fluid pressure actuators, servo motor components, etc., to achieve the effects of small pressure shock, precise flow control, and good controllability

Inactive Publication Date: 2013-02-13
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The valve body of the existing water valve is bulky, complex in structure, and difficult to integrate. The action of the valve core is controlled by the servomotor to push the guide rod. The flow control accuracy is not high, and the linearity is poor. hydraulic shock

Method used

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  • Large-diameter proportional water valve for heavy equipment
  • Large-diameter proportional water valve for heavy equipment
  • Large-diameter proportional water valve for heavy equipment

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Embodiment Construction

[0020] With reference to the accompanying drawings, the present invention includes a stepped valve sleeve 2, a stepped valve core 1, a bottom plate 3, a control cover plate 5, a valve cover 6, a displacement sensor 7 and a pilot proportional control valve unit 9. figure 1 Among them, the lower part of the stepped spool 1 is put into the stepped valve sleeve 2, the spool 1 is sealed with the lower part of the valve sleeve 2, and the upper part of the valve core 1 is statically sealed with the valve sleeve 2, and a second sealing ring is arranged between the two sealing rings. 2 Leak detection port 14, the lower part of the control cover plate 5 cooperates with the valve sleeve 2, the valve cover 6 and the upper end of the control cover plate 5 are connected by screws 8, the upper part of the valve core 1 cooperates with the control cover plate 5, the upper part of the valve core 1 and the bottom plate 3 cooperate with the control cover plate 5, and an upper cavity 11 is formed ...

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Abstract

The invention relates to a large-diameter proportional water valve for heavy equipment. The large-diameter proportional water valve comprises a step-shaped valve sleeve, a step-shaped valve core, a control cover plate, a valve cover, a bottom board, a displacement sensor and a guide proportional control valve unit. The large-diameter proportional water valve is characterized in that the lower part of the valve core is mounted inside the valve sleeve; a seal is arranged between the valve core and the valve sleeve; the lower part of the control cover plate is matched with the valve sleeve; the upper part of the valve core is matched with the control cover plate; an upper cavity and a lower cavity which are mutually separated are arranged between the valve core and the control cover plate; the bottom board is arranged at the bottom of the control cover plate; the guide proportional control valve unit is mounted on the lateral surface of the control cover plate; an oil path is arranged between the upper and lower cavities and the guide proportional control valve unit; a guide control oil opening of the oil path is formed in the bottom board; the displacement sensor is mounted on the valve cover; and symmetrical round holes are formed in the lateral wall at the lower part of the valve sleeve. The large-diameter proportional water valve has the advantages of simplicity in structure, easiness of integration, realization of flow proportional control, good linearity, and rapid response; and furthermore, the pressure impact can be reduced in a pressure relief process and an unloading process.

Description

technical field [0001] The invention relates to a large-diameter proportional water valve for heavy equipment, in particular to an "oil-controlled water" proportional plug-in water valve. Background technique [0002] In recent years, the rapid development of steel, metallurgy, automobile, aerospace and other industries has forced people to have an increasing demand for heavy equipment and higher performance requirements. Forging hydraulic press is a kind of heavy equipment in forging machinery, and its equipment level is one of the symbols to measure the level and ability of a country's machinery manufacturing. The heavy-duty large-scale forging hydraulic press has a large installed power, high system pressure, and complex hydraulic system. When the hydraulic cylinder is loaded, a large amount of hydraulic elastic potential energy is generated inside the cylinder and in the pipeline. These elastic potential energy are released instantly when the hydraulic cylinder is unload...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
Inventor 姚静翟富刚常立颖孔祥东
Owner YANSHAN UNIV
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