Plug-in mounted proportional valve
A proportional valve and plug-in technology, which is applied in the field of plug-in proportional valves, can solve the problems of complex pipelines, high cost, and bulky overall volume of the main engine, and achieve reduced volume and weight, simple hydraulic oil circuits, and reduced complexity Effect
Active Publication Date: 2018-09-07
芜湖普菲斯特电液技术有限公司
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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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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 at the right end communicating with the valve ho...
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The invention discloses a plug-in mounted proportional valve. The plug-in mounted proportional valve comprises a plug-in valve body. A valve hole which is through from left to right is formed in the plug-in valve body. A valve element is slidably connected to the interior of the valve hole. The left end of the plug-in valve body is provided with a screw sleeve. The screw sleeve is internally provided with a mounting hole which is through from left to right. A driving rod in threaded connection with the left end of the valve element is slidably connected to the interior of the mounting hole. Ascrew plug connected to the driving rod in a clearance sleeving mode is mounted at the left end of the valve hole. A reset spring is arranged in the mounting hole and located between the screw plug and the left end of the driving rod. The outer side face of the screw sleeve is provided with a fourth annular groove. A hydraulic control oil port X communicating with the mounting hole is arranged inthe fourth annular groove. The left end of the valve hole is provided with a hydraulic control oil port Y. A third through-flow hole is formed in the valve element in the axial direction of the valveelement. The right end of the third through-flow hole communicates with the hydraulic control oil port Y. The plug-in mounted proportional valve is simple and reasonable in structure and low in manufacturing cost, integrated design is facilitated, and a hydraulic oil circuit can be simplified.
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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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