Rough and fine adjustment needle switch

A technology of coarse and fine adjustment and coarse adjustment, which is applied in the field of coarse and fine adjustment needle switches, which can solve the problems of inability to adjust the oil pressure and flow in a small range, and poor sealing, and achieve the effects of precise adjustment, improved sealing, and improved adjustment accuracy

Pending Publication Date: 2019-12-31
XIAN QINGAN AERONAUTICAL TESTING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the needle switch in the prior art cannot adjust the oil pressure and flow in a small range and has poor sealing performance, and provides a coarse and fine adjustment needle switch

Method used

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  • Rough and fine adjustment needle switch
  • Rough and fine adjustment needle switch
  • Rough and fine adjustment needle switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0058] The structure of a coarse and fine adjustment needle switch of the present invention is as follows:

[0059] Such as figure 2 As shown, it includes valve body 5, coarse adjustment assembly 6 and fine adjustment assembly 7;

[0060] Such as image 3 As shown, the valve body 5 is provided with a coarse adjustment step hole 56, and the coarse adjustment step hole 56 includes a coarse adjustment large hole 561 and a coarse adjustment small hole 562, and the coarse adjustment small hole 562 is the oil inlet hole of the valve body; the side of the valve body 5 The valve body oil outlet hole 55 communicated with the large coarse adjustment hole 561 is arranged on the wall; the valve body 5 is connected with the mounting plate 8 through the flange 52 provided on its upper end, and the valve body 5 has an integrated structure.

[0061] The coarse adjustment assembly 6 includes a coarse adjustment valve stem 61, a coarse adjustment handle 62 and a coarse adjustment taper plug ...

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PUM

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Abstract

The invention relates to a rough and fine adjustment needle switch which is aimed at solving the problems that a needle switch in the prior art cannot make a small-range adjustment on oil pressure andflow. The rough and fine adjustment needle switch comprises a valve body, a rough adjustment assembly and a fine adjustment assembly. An oil outlet is formed in the side wall of the valve body. The rough adjustment assembly comprises a rough adjustment valve rod, a rough adjustment handle and a rough adjustment conical plug. The upper portion of the rough adjustment valve rod is located outside the valve body and provided with a rough adjustment handle. The lower portion of the rough adjustment valve rod is located inside the valve body and is in threaded connection with the valve body. The lower end of the rough adjustment valve rod is provided with the rough adjustment conical plug. The rough adjustment conical plug is provided with at least one valve rod oil outlet in the radial direction. The fine adjustment assembly comprises a fine adjustment valve rod, a fine adjustment handle and a fine adjustment conical plug. The upper portion of the fine adjustment valve rod is located outside the fine adjustment valve rod and provided with a fine adjustment handle. The lower portion of the fine adjustment valve rod is located inside the rough adjustment valve rod and is in threaded connection with the rough adjustment valve rod. The large end of the fine adjustment conical plug is connected with the lower end of the fine adjustment valve rod, and the small end of the fine adjustment conical plug is inserted in a fine adjustment small hole.

Description

technical field [0001] The invention relates to a needle switch, in particular to a needle switch with thickness adjustment. Background technique [0002] Needle valve is a mechanical valve used to cut off and adjust pressure and flow. It is widely used in petroleum and chemical system instrument pneumatic pipelines and measurement pipelines. It is an important part of instrument measurement pipeline systems. [0003] The existing needle valve structure such as figure 1 As shown, it includes a valve body 1 and a valve stem 2; the valve body 1 includes a screw cap 11, a housing 12, an oil inlet port 13 and an oil outlet port 14, the screw cap 11 is fastened with the upper end of the housing 12, and the housing 12 An oil inlet port 13 is installed at the lower end, and an oil outlet port 14 is installed on the side wall of the housing 12. One end of the valve stem 2 extends into the screw cap 11 and the housing 12 in turn; the other end of the valve stem 2 is provided with a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/38F16K1/32F16K31/60F16K27/12F16K27/02F16K41/02
CPCF16K1/32F16K1/38F16K27/0254F16K27/12F16K31/60F16K41/02
Inventor 董新利张广民胡继全丁登科张镐京
Owner XIAN QINGAN AERONAUTICAL TESTING EQUIP
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