Dust-free fingerprint gun

Abstract

The invention discloses a dust-free fingerprint gun which comprises a gun head, a suction cavity, an air guide pipe, a powder feed device and a dust filter device. The gun head is provided with an opening and of a cavity structure. The suction cavity is provided with a turbine. The air inlet end, namely the front end, of the suction cavity is connected with the rear end of the gun head through a plurality of air pipes. One end of the air guide pipe is disposed at the rear section of the suction cavity, and the other end thereof is disposed in the gun head and faces the front end of the gun head. The feed end of the power feed device is connected with the pipe body of the air guide pipe. The dust filter device is disposed at the front section of the suction cavity. The dust-free fingerprint gun has the advantages that a dust-free working environment is guaranteed, and the dust-free fingerprint gun is exquisite in structural design, convenient to use, good in effect and suitable for being popularized and used.

Description

technical field [0001] The invention relates to a fingerprint gun, in particular to a dust-free fingerprint gun. Background technique [0002] At present, the known sweat finger and palm print scanning display pen is made up of thin soft hairs and a penholder. Dip the soft hair part of the brush with a certain color powder to scan the object with sweat finger and palm prints in contact mode. Since the sweat finger and palm prints are sticky, the powder will stick to the lines of the sweat finger and palm prints. Reveals fingerprints left on an object. However, the current mode has the following defects: the general method of dipping the brush with powder and scanning the display will cause the powder to fly, and the flying powder will not sink in the air for a long time, and will enter the human body with people's breathing, which is harmful to the human body ; The method of sweeping and displaying sweat finger and palm prints is in direct contact with the finger and palm ...

AI Technical Summary

Problems solved by technology

However, the current mode has the following defects: the general method of dipping the brush with powder and scanning the display will cause the powder to fly, and the flying powder will not sink in the air for a long time, and will enter the human body with people's breathing, which is harmful to the human body ; The method of sweeping and displaying sweat finger and palm prints is in direct contact with the finger and palm prints, and has certain destructiveness to the finger and palm prints left on the object, and the destructiveness will increase with the increase of humidity. When the humidity increases to a certain In addition, the pen uses the method of dipping the hair with powder, which can easily cause the powder to be scattered outside, and when there is wind, it will immediately flutter all over the room

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