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Material needle assembly

A needle and component technology, applied in the direction of engine components, engine seals, injection devices, etc., can solve the problems of easy leakage, injection leakage, lack of sealing device for needle components, etc., to achieve the effect of preventing leakage and improving performance

Active Publication Date: 2012-10-03
ZHEJIANG RONGPENG AIR TOOLS
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  • Abstract
  • Description
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Problems solved by technology

This type of high-pressure spray gun is light in size and easy to use. However, this type of high-pressure spray gun also has shortcomings in structure. leakage
[0003] Therefore, during the creation process of the present invention, the inventor found that there are at least the following problems in the prior art: the needle assembly in the existing high-pressure spray gun lacks a perfect sealing device, which is prone to leakage

Method used

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Embodiment Construction

[0012] An embodiment of the present invention provides a needle assembly. The material needle assembly includes: a material needle, a guide screw, a thimble head assembly installed on the head of the material needle, and a pull ring installed at the tail of the material needle. The material needle is installed in the inner hole of the guide screw, and the guide A sealing washer is installed between the screw and the needle, and a tapered sealing ring is installed between the guide screw and the needle, and the tapered sealing ring is adjacent to the sealing gasket, and a sealing ring is placed on the outside of the tapered sealing ring. cover.

[0013] Through the above-mentioned needle assembly provided by the embodiment of the present invention, two sealing rings are formed between the guide screw and the needle, which can effectively prevent the leakage of spray in the spray gun, thereby greatly improving the performance of the high-pressure spray gun.

[0014] In order to...

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Abstract

The invention provides a material needle assembly, comprising a material needle, a guiding screw, a thimble assembly arranged on the head part of the material needle, and a pull ring arranged at the tail part of the material needle, wherein the material needle is arranged in the inner bore of the guiding screw, a seal washer is arranged between the guiding screw and the material needle, taper seal rings are also arranged between the guiding screw and the material needle, the taper seal rings are closely adjacent to the seal washer, and a seal ring gland presses and covers the taper seal rings. The invention provides the technical scheme that the leakage of sprayed material in a spray gun can be effectively prevented by the two seal rings formed between the guiding screw and the material needle, thereby greatly enhancing the performance of the high pressure spray gun.

Description

technical field [0001] The invention relates to spray gun technology, in particular to a needle assembly with a sealing device. Background technique [0002] High-pressure dual-purpose spray gun is mainly used in decoration, spraying of latex paint, oily paint and wood paint in decoration. It is a spray gun with two advantages of air spray finishing coating effect and airless spray high working efficiency. Existing high-pressure spray guns generally include a gun body, a nozzle, a transfer pipe, a wrench, and the like. This type of high-pressure spray gun is light in size and easy to use. However, this type of high-pressure spray gun also has shortcomings in structure. leakage. [0003] Therefore, during the creation process of the present invention, the inventor found at least the following problems in the prior art: the needle assembly in the existing high-pressure spray gun lacks a perfect sealing device and is prone to leakage. Contents of the invention [0004] In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B15/00F16J15/16
Inventor 李小荣
Owner ZHEJIANG RONGPENG AIR TOOLS
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