Pellet type blast hole plugging gun and use method

Abstract

The invention discloses a pellet type blast hole plugging gun and a use method. The pellet type blast hole plugging gun structurally consists of an air supply handle, a shooting chamber and a storagebin; an air inlet is formed in the lower end of an air storage chamber in the air supply handle; an opening in the left end of the air storage chamber is connected with an air conveying hole channel;an air valve switch is placed at the connecting part of the air storage chamber and the air conveying hole channel; the other end of the air conveying hole channel is connected with the shooting chamber; and a piston rod in the shooting chamber is connected with a piston and an impact disc. During the implementation, a gun muzzle stretches into a blast hole, the air inlet is connected with a high-pressure air pipe, and after a switch is pressed down, the piston makes reciprocating motion under the action of a reverse drawing spring and compressed air to drive the impact disc to impact a charging hopper to discharge a tamping plug, and the stemming tamping plug falls in and rushes into the blast hole at a high speed, so that the purpose of high compactness plugging is achieved. By taking the compressed air as a power source, the pellet type blast hole plugging gun is simple to operate and is safe and portable, and contributes to solving the problem that an existing blast hole is difficult to plug; and compared with manual filling, the construction efficiency is improved substantially.

Description

technical field [0001] The invention relates to a blast hole filling construction machine, in particular to a projectile type blast hole plugging gun. Background technique [0002] In the blasting and excavation of tunnels, roadways, chambers and other underground projects, blasthole plugging is an important part of blasting construction, and the quality of its plugging determines the effect of blasting. Reasonable hole plugging can prolong the detonation time of explosives and prolong the high temperature and high pressure process of detonated gas, thereby improving the energy utilization rate of explosive detonation. If the compactness is not up to standard and the length of the plugging is short during the plugging process, the shock wave and gas pressure after the explosive explosion will not be able to overcome the resistance of the rock and will be ejected along the blast hole, which will bring great safety hazards to the surrounding machinery and equipment, and even ...

AI Technical Summary

Problems solved by technology

If the compactness is not up to standard and the length of the plugging is short during the sealing process, the shock wave and the pressure of the explosive gas after the explosive explosion will not be able to overcome the resistance of the rock and will be ejected along the blast hole, which will bring great safety hazards to the surrounding machinery and equipment, and even Causing coal dust and gas explosion accidents

[0003] In the current blasting construction, most of the blasthole filling work is manual filling and compaction with blasting sticks. However, manual filling is time-consuming and laborious, and the blasting of the blasting sticks is easy to damage the detonating equipment. construction safety

Many blasting machines put into production process the broken blasting mud into shapes, but due to differences in drilling rig models and actual conditions on site, it is difficult to ensure that each blasting hole can meet the compactness requirements

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