Dust-free fingerprint gun

Abstract

The invention discloses a dust-free fingerprint gun. The dust-free fingerprint gun comprises a gun head, an air suction cavity, an air guide tube, a powder leading-in device, a dust filter device and an auxiliary material bottle. An opening is formed in the front end of the gun head, and the gun head is a cavity. The air suction cavity is provided with a turbine, and the air inlet end, namely the front end, of the air suction cavity is connected with the rear end of the gun head through a plurality of air pipes. One end of the air guide tube is arranged on the rear section of the air suction cavity, the other end of the air guide tube is arranged in the gun head, and an opening of the air guide tube faces the front end of the gun head. The feeding end of the powder leading-in device is connected with a tube body of the air guide tube. The dust filter device is arranged on the front section of the air suction cavity. The auxiliary material bottle is filled with an auxiliary material, and the auxiliary material bottle is communicated with the air guide tube and placed on the downstream of the powder leading-in device. The dust-free fingerprint gun has the advantages that a dust-free working environment can be guaranteed, and the entire device is elaborate in structural design, convenient to use, excellent in effect and suitable for application and popularization.

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 pen holder. 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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