Digit proportional control valve

A proportional control valve, digital technology, applied in valve details, valve device, valve operation/release device, etc., can solve the problems of low repeatability, large hysteresis, low degree of automation of manually adjusted proportional control valve, etc. Improve control accuracy, good sealing and stable operation

Inactive Publication Date: 2013-02-13
陈国永
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the manual adjustment proportional control valve has a low degree of automation and can only meet the requirements of general hydraulic equipment.
The electro-hydraulic proportional type has a high degree of automation and can meet the continuous and remote control of flow parameters, but it has defects such as large hysteresis and low repeatability

Method used

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0015] Such as figure 1 and figure 2 As shown, the digital proportional control valve includes:

[0016] The valve body 1 is provided with a valve chamber 11 along the axial direction of the valve body on the first end surface 15 of the valve body, and a fluid inlet 12 and a fluid outlet 13 communicating with the valve chamber 11 are provided on the side wall of the valve body. A return channel 14 is provided, and both ends of the return channel communicate with the valve cavity 11 . The valve cavity 11 is provided with a bearing 8 on the inner peripheral wall of the valve cavity 11 near the outer port.

[0017] The valve stem 2 is arranged in the valve cavity 11, and its peripheral wall is provided with a groove 21 corresponding to the fluid inlet 12 and the fluid outlet 13. Moving the valve stem can change the relative position between t...

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PUM

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Abstract

The invention relates to a digit proportional control valve which comprises a valve body and a valve rod. The valve rod is arranged in a valve cavity of the valve body and connected with a driving mechanism. The digit proportional control valve is characterized in that the driving mechanism comprises a tubular jacket which is arranged outside the valve body, a plurality of pairs of inwards protruded electromagnetic windings are arranged on the inner circumferential wall of the jack at intervals, two electromagnetic windings in the diameter direction form a pair of electromagnetic windings, each pair of electromagnetic windings is connected with corresponding pulse current transmitting devices, and pulse current transmitted by the pulse current transmitting devices sequentially have phase differences along the peripheral direction; a permanent magnet and a nut are arranged in a tubular cavity of the jack, the permanent magnet with a tubular structure is capable of rotating relative to the jack under the action of electromagnetic fields generated by the electromagnetic windings, the nut rotates with the permanent magnet, an inner cavity of the nut is communicated with the valve cavity in a sealing mode, a screw is arranged in the nut, and the screw is connected with the valve rod in a driving mode; and the permanent magnet is located outside the valve cavity. Compared with digit proportional control valves in prior art, the digit proportional control valve is good in sealing performance, stable in running and high in control accuracy.

Description

technical field [0001] The invention relates to a control valve, in particular to a digital proportional control valve. Background technique [0002] In the field of fluid control, directional valves and proportional valves are often used to control whether the fluid passes or how much the fluid passes through, that is, to use directional valves and proportional valves to control whether the fluid passes or the flow rate to control the movement of actuators such as oil cylinders. execution speed. The directional valve and proportional valve control the position of the spool to control whether the fluid on the valve body passes through or the size of the opening, thereby controlling whether the fluid enters or flows out of the valve body or the amount of the valve body, so as to achieve control execution The speed of the unit action or the purpose of stopping the action. [0003] The existing directional valve can only provide the switching function of the oil circuit, but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/06
Inventor 陈国永
Owner 陈国永
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