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Straight-through proportional valve

A quantitative valve, straight-through technology, used in quantitative devices, sliding valves, valve details, etc., can solve the problems of complex structure of quantitative valves, and achieve the effect of simple structure, convenient maintenance and small volume

Pending Publication Date: 2019-08-09
XINTAI JIAXING HYDRAULIC MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing quantitative valve includes a quantitative valve body and a reversing valve. Most of the reversing valve realizes the reversing through pneumatics. The reversing valve is connected with the quantitative valve body to realize the quantitative output of grease.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like Figure 1 to Figure 8 As shown, the straight-through quantitative valve includes a quantitative valve body 1. The quantitative valve body 1 is provided with a quantitative hole 13, an oil inlet hole 11, and an oil outlet hole 12. Both the oil inlet hole 11 and the oil outlet hole 12 communicate with the quantitative hole 13. Quantitative spool 2, one end of quantitative spool 2 is provided with quantitative valve stem 21, the diameter of quantitative spool 21 is less than the diameter of quantitative spool 2, quantitative spool 2 slides and inserts in quantitative hole 13, quantitative spool 2 and The quantitative hole 13 matches; the quantitative piston 3, the center of the quantitative piston 3 is provided with a hole, the quantitative piston 3 slides and is inserted on the quantitative valve stem 21, the quantitative piston 3 is also slid and inserted in the quantitative hole 13, the quantitative piston 3 and the quantitative hole 13 Matching, the quantitative p...

Embodiment 2

[0038] On the basis of above-mentioned example one, also comprise quantitative adjustment device, quantitative adjustment device comprises quantitative adjustment rod 5, quantitative adjustment rod 5 is screwed in the stem hole 41 of quantitative seat 4 by screw thread, quantitative adjustment rod 5 is used for adjusting quantitative valve position of rod 21.

[0039] The quantitative adjustment rod 5 can limit the moving position of the quantitative valve rod 21, that is, control the distance between the quantitative valve core 2 and the quantitative piston 3 when extruding grease, thereby controlling the size of the oil storage chamber when the oil is discharged, and realizing the oil output. Adjustment, expanding the adjustment range of the oil output, so that the straight-through quantitative valve has a wide range of applications.

Embodiment 3

[0041] The difference between this embodiment and the second embodiment lies in the quantitative valve rod 5, and the quantitative adjustment rod 5 is a differential head in this embodiment. The differential head can accurately adjust the oil output to achieve high-precision adjustment.

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Abstract

The invention relates to a proportional valve, in particular to a straight-through proportional valve. The proportional valve comprises a proportional valve body, and a proportional hole, an oil inlethole and an oil outlet hole are formed in the proportional valve body, wherein both the oil inlet hole and the oil outlet hole communicate with the proportional hole; a proportional valve rod is arranged at one end of a proportional valve core, the proportional valve core is inserted into the proportional hole in a sliding mode, proportional pistons are respectively inserted into the proportionalvalve rod and the proportional hole in a sliding mode, and an oil storage cavity is formed by the proportional pistons and the proportional valve core; a limiting nut is fixed at the tail end of theproportional valve rod; a proportional seat is fixed at one end of the proportional hole, a valve rod hole is formed in the proportional seat, and the proportional valve rod and the limiting nut are movably inserted into the valve rod hole; a valve core driving device is connected with the proportional valve core, and the valve core driving device is used for driving the proportional valve core tomove in a reciprocating manner in the proportional hole; when the proportional valve core and the proportional pistons move in a reciprocating mode in the proportional hole, the oil storage cavity communicates with the oil inlet hole and the oil outlet hole. The straight-through proportional valve is simple in structure, small in size and convenient to use, is provided with few sealing points, can reduce leakage points and is convenient to maintain.

Description

technical field [0001] The invention relates to a quantitative valve, especially a straight-through quantitative valve. Background technique [0002] The existing metering valve includes a metering valve body and a reversing valve. Most of the reversing valve realizes the reversing through pneumatics. The reversing valve is connected with the metering valve body to realize quantitative output of grease. Contents of the invention [0003] In order to solve the above problems, the present invention provides a straight-through quantitative valve with simple structure, and the specific technical solution is: [0004] The straight-through quantitative valve includes a quantitative valve body, and the quantitative valve body is provided with a quantitative hole, an oil inlet hole and an oil outlet hole, and the oil inlet hole and the oil outlet hole are all communicated with the quantitative hole; the quantitative valve core, the One end of the quantitative spool is provided wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16N23/00F16N27/00F16K3/00F16K31/122
CPCF16N23/00F16N27/00F16K3/00F16K31/122
Inventor 贾开强贾洪安贾开江张光宝邵喜红秦元香
Owner XINTAI JIAXING HYDRAULIC MACHINERY CO LTD
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