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Gas ignition type inner hole supersonic spray gun

A supersonic and inner hole technology, which is applied in the direction of fusion spraying, metal material coating process, coating, etc., can solve the problems such as the difficulty of forming high-speed flame flow, and achieve good economic benefits, reasonable design, and wide application range.

Pending Publication Date: 2021-04-23
ZHENGZHOU LIJIA THERMAL SPRAYING MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

External ignition is very difficult for fuel guns to introduce the flame into the combustion chamber and form a high-speed flame flow

Method used

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  • Gas ignition type inner hole supersonic spray gun

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Effect test

Embodiment

[0012] Example: see figure 1 , in the picture, 1-cooling water inlet pipe, 2-oxygen delivery pipe, 3-gun body, 4-gun barrel, 5-gun barrel pressure cap, 6-powder feeding port, 7-connector, 8-combustion chamber, 9-stabilizer, 10-fuel delivery pipeline, 11-gas delivery pipeline, 12-cooling water outlet pipe.

[0013] A gas ignition type inner hole supersonic spray gun, including a gun body 3, a gun barrel 4, a voltage regulator 9, a combustion chamber 8 and a connector 7, wherein: the combustion chamber 8 is located in the inner cavity of the gun body 3, and the outlet of the combustion chamber 8 It communicates with the gun barrel 4, the gun barrel 4 is located in the inner cavity of the connector 7, and the body wall of the gun barrel 4 is provided with a powder feeding port 69, and an igniter and three gas passages are arranged on it, and the entrances of the three gas passages are respectively connected to the oxygen The delivery pipeline 2, the fuel delivery pipeline 10 and...

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Abstract

The invention discloses a gas ignition type inner hole supersonic spray gun which comprises a gun body, a gun barrel, a pressure stabilizer, a combustion chamber and a connector. An igniter and three gas channels are arranged on the pressure stabilizer; inlets of the three gas channels are communicated with an oxygen conveying pipeline, a fuel oil conveying pipeline and a fuel gas conveying pipeline respectively; outlets of the three gas channels are respectively communicated with an inlet of the combustion chamber; a cooling water channel is arranged on the gun body and is communicated with a cooling water inlet pipe; and a gap is arranged between the combustion chamber and the gun body, and is respectively communicated with the cooling water channel and a cooling water outlet pipe to form cooling water circulation. According to the gas ignition type inner hole supersonic spray gun provided by the invention, combustible gas is firstly introduced for primary ignition, and fuel oil is introduced for secondary combustion after flame is introduced into the combustion chamber, so that the aim of igniting the spray gun to form high-speed flame flow is fulfilled, and the ignition problem of an external ignition type spray gun is solved.

Description

Technical field: [0001] The invention relates to a flame spray gun for thermal spraying, in particular to a gas ignition type inner hole supersonic spray gun. Background technique: [0002] Supersonic flame spraying is generally used to spray the outer surface of the workpiece. For a narrow space with a diameter of less than 500mm, it is difficult to spray the inner surface of the narrow space with a conventional supersonic flame spray gun, because the flame of a conventional spray gun is sprayed axially and cannot change the direction of the flame. Direction and angle, so for inner wall or inner hole spraying, only special elbow inner hole spray gun can be used. The barrel of this spray gun has an included angle of 60 degrees or 45 degrees with the combustion chamber. Flame spray guns use gas fuel, and the pressure of gas fuel is not high. When this spray gun burns, the combustion chamber pressure is low, and the flame speed formed is low. When spraying the inner wall of a ...

Claims

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Application Information

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IPC IPC(8): C23C4/129
CPCC23C4/129
Inventor 申忠侯楠楠倪利民王凯
Owner ZHENGZHOU LIJIA THERMAL SPRAYING MACHINERY CO LTD
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