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Valve element structure of proportional reversing valve

A proportional reversing valve and valve core technology, applied in valve devices, multi-port valves, sliding valves, etc., can solve the problems of reduced overcurrent pressure and high flow control requirements, and achieve large overflow, stable flow output and stable operation. Effect

Pending Publication Date: 2021-08-27
HYDRAULIK POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a new spool structure of proportional reversing valve, by designing a radial throttling groove and a variable-diameter cone frustum with full-circumferential openings on the edge of the sealing end face of the spool to solve the high flow control requirements for small openings. , the technical problem of throttling control in applications where the overcurrent pressure is reduced under a large opening

Method used

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  • Valve element structure of proportional reversing valve
  • Valve element structure of proportional reversing valve
  • Valve element structure of proportional reversing valve

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Embodiment Construction

[0027] The spool structure of the proportional reversing valve described in the present invention can be made of the following materials, and is not limited to the following materials, such as common components such as spool, hydraulic matching system, and electric control device.

[0028] figure 1 It is a schematic diagram of the cross-sectional structure of the valve core structure of the proportional directional valve in the embodiment of the present invention in the neutral state; figure 2 for figure 1 Partial enlarged schematic diagram of middle M; this embodiment combines image 3 with Figure 4 Be explained.

[0029] The spool structure of the proportional reversing valve in the embodiment of the present invention is slidably installed in the housing 1, and the housing 1 is provided with a high-pressure oil port P and at least one working oil port (A and B). The housing 1 is provided with a slide hole 10, the valve core 2 is sleeved in the slide hole 10 and seals t...

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Abstract

The invention provides a valve element structure of a proportional reversing valve, and belongs to the field of reversing valve manufacturing. The valve element structure is installed in a shell in a sliding mode, a high-pressure oil port and at least one working oil port are formed in the shell, a sliding hole is formed in the shell, and a valve element is arranged in the sliding hole in a sleeved mode and seals the sliding hole through the radial face of the valve element; the valve element slides so that a gap can be formed between the radial end face of the valve element and the sliding hole, and the gap is used for communicating the high-pressure oil port with the working oil port; when the valve element is located at the middle position, the face, making contact with the sliding hole, of the valve element is a shoulder sealing face; and reducing frustums are arranged on the edges of the two sides of the shoulder sealing face, and at least one throttling groove is formed in the radial face of each reducing frustum. The reducing frustum is adopted as a full-circumference flow opening of the valve element, the throttling groove with the radial opening is formed in the reducing frustum, and the valve element structure is very suitable for the application occasions that the flow control requirement is high under a small opening and the overflowing pressure is reduced under a large opening.

Description

technical field [0001] The invention relates to valve manufacturing technology, in particular to a valve core structure of a proportional reversing valve, and belongs to the technical field of hydraulic equipment manufacturing. Background technique [0002] As a hydraulic component to control the on-off and reversing of the oil circuit, the reversing valve is widely used. The common reversing valve is a slide valve structure, and its spool slides in the valve body. By switching the direction of the spool, different oil ports are connected or closed. [0003] Because the opening of the proportional directional control valve can change with the change of the control command, it can realize continuous adjustment of the movement speed of the actuator by adjusting the overflow of the proportional directional control valve. The control is simple and convenient, and the control precision is high. [0004] In the proportional reversing valve in the prior art, most of the throttling...

Claims

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Application Information

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IPC IPC(8): F15B13/042F16K11/07F16K3/314
CPCF15B13/0402F16K11/0708F16K3/314F15B2013/0412
Inventor 彭敏翁明堂陈家豪
Owner HYDRAULIK POWER
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