A cartridge proportional valve

A proportional valve and plug-in technology, which is applied in valve devices, multi-way valves, fluid pressure actuators, etc., can solve the problems of complex piping, bulky overall volume, and high cost of the main engine, and achieve reduced volume and weight, and reduced The effect of complexity and simplicity of hydraulic oil circuit

Active Publication Date: 2021-11-23
芜湖普菲斯特电液技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The multi-way directional valve is generally in the form of three-position six-way, mostly in the form of castings, or a piece multi-way directional valve or an integral multi-way directional valve. Each directional valve is an eight-slot structure with partial flow. The circuit is very complex, resulting in bulky, heavy, and high cost; and with the complexity of the hydraulic oil circuit, the existing multi-way reversing valve is not suitable for integrated design, in order to meet the complex hydraulic oil circuit, It is necessary to connect the multi-way reversing valve with other functional valve blocks through many hoses, which makes the pipeline of the main engine complicated and easily causes oil leakage

Method used

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  • A cartridge proportional valve
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Embodiment Construction

[0018] see Figure 1-3 As shown, a plug-in proportional valve includes a plug-in valve body 9, and the plug-in valve body 9 is provided with a valve hole 901 penetrating left and right, and a valve core 8 is slidably connected to the valve hole 901; A first annular groove 902, a second annular groove 903, and a third annular groove 904 are sequentially provided on the outer surface of the plug valve body 9 from left to right, and a valve communicating with the valve hole 901 is provided in the first annular groove 902. The B oil port 92 and the first flow hole 9b, the second annular groove 903 is provided with the P oil port 93 communicated with the valve hole 901, and the third annular groove 904 is provided with the A oil port 91 communicated with the valve hole 901 and The second flow hole 9c; the left end of the plug-in valve body 9 is equipped with a screw sleeve 1, and the screw sleeve 1 is provided with a mounting hole 1c whose right end communicates with the valve hole...

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Abstract

The invention discloses a plug-in proportional valve, comprising a plug-in valve body, the plug-in valve body is provided with a left and right penetrating valve hole, and a valve core is slidably connected in the valve hole; the left end of the plug-in valve body is installed There is a screw sleeve, and the screw sleeve is provided with a left and right penetrating installation hole, and a transmission rod threadedly connected with the left end of the valve core is slidably connected in the installation hole; the left end of the valve hole is installed with a clearance sleeve connected to the transmission rod There is a return spring between the screw plug and the left end of the transmission rod in the installation hole; the outer side of the screw sleeve is provided with a fourth annular groove, and the fourth annular groove is provided with a The right end of the valve hole is the Y hydraulic control oil port; the valve core is provided with a third flow hole along its axial direction, and the right end of the third flow hole is connected to the Y hydraulic oil control port. The hydraulic control oil port is connected; the cartridge valve has a simple and reasonable structure, low manufacturing cost, convenient integrated design, and can simplify the hydraulic oil circuit.

Description

technical field [0001] The invention relates to the technical field of cartridge valves, in particular to a cartridge-type proportional valve. Background technique [0002] At present, a large number of multi-way reversing valves are used in the hydraulic systems of vehicles, construction machinery, agricultural machinery, mining machinery, forestry machinery, and petroleum machinery to control the movement direction and speed of actuators. The multi-way directional valve is generally in the form of three-position six-way, mostly in the form of castings, or a piece multi-way directional valve or an integral multi-way directional valve. Each directional valve is an eight-slot structure with partial flow. The circuit is very complex, resulting in bulky, heavy, and high cost; and with the complexity of the hydraulic oil circuit, the existing multi-way reversing valve is not suitable for integrated design, in order to meet the complex hydraulic oil circuit, It is necessary to c...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): F15B13/04F16K11/07
CPCF15B13/0402F16K11/0716
Inventor不公告发明人
Owner芜湖普菲斯特电液技术有限公司