Blast hole blasting combined spacer

Abstract

The invention belongs to the technical field of shooting hole charge blasting for mine enterprises, and in particular relates to a shooting hole blasting combined spacer. The spacer consists of a disc bottom plate, a rubber seal ring, a group of balanced hanging ropes, a bearing pulling rope and an orifice carrying rod, wherein the rubber seal ring is connected with the disc bottom plate; the balanced hanging ropes are connected with the upper surface of the circumference of the disc bottom plate; the bearing hanging rope is connected with the balanced hanging ropes; the orifice carrying rod is connected with the bearing pulling rope; the bearing pulling rope is provided with a scale label line; the disc bottom plate is provided with a circumferential T-shaped groove; the bottom of the rubber seal ring is provided with a T-shaped base ring which is inserted in the circumferential T-shaped groove; the middle part of the rubber seal ring is provided with a flat plate ring which is connected with the upper end of the T-shaped base ring; and the upper part of the rubber seal ring is provided with a conical sawtooth ring which is connected with the flat plate ring. The spacer provided by the invention has the advantages of simple structure, low manufacturing cost and good balanced performance, is easy to operate, and can ensure the construction to be safe and reliable; and the spacer can be widely applied to water-free dry shooting holes or blasting holes with less water.

Description

technical field [0001] The invention belongs to the technical field of blasthole charge blasting in mining enterprises, and in particular relates to a blasthole blasting combined spacer. Background technique [0002] When mining ore or mining other solid objects, it is usually necessary to drill a deep hole with a drilling rig or other equipment on the object to be mined, and then fill the hole with explosives for blasting, so that the object to be mined will burst down, and then achieve the goal of mining. purpose, but directly filling the deep hole with explosives, sometimes the energy distribution generated by the blasting is not uniform, which not only causes a large amount of explosives consumed per unit, but also has a high rate of bulk, which affects the quality of the blasting. [0003] The blasting hole spacer is a device that separates different materials in the blasting hole. Its function is to make the energy distribution of explosives uniform. It is mainly used ...

AI Technical Summary

Problems solved by technology

Chinese patent ZL02276267.1 discloses a blast hole gas spacer, which is composed of a flexible air bag and an inflatable device in the air bag to form this type of spacer, and the air bag is inflated by releasing the compressed gas of the gas cylinder in the air bag, or The gas generated by the gas generator is used to inflate the air bag, so that the inflated air bag is in close contact with the wall of the blast hole to form a bearing capacity and realize the interval filling of explosives in the blast hole. There are safety hazards, and the structure is cumbersome, the operation is troublesome, the work efficiency is low, and the size of the isolation is not accurate, which affects the quality and effect of the blasting

[0004] Chinese patent ZL200620161101.8 discloses a gas spacer, which does not require high-pressure gas storage, but uses a compressor to inflate directly, but the premise is that it must be equipped with a special inflatable device during use, which is costly and time-consuming and complicated to operate. low efficiency

[0005] Chinese patent ZL01212086.3 is a spacer for deep hole blasting, which is composed of two partitions and a pillar between the two partitions. Although the structure is simple, the partition is a rigid solid and cannot be connected with the blasting hole when it enters the blasting hole. The shape is closely matched, the size is small, and the sealing performance of the space between the upper and lower partitions is poor, which affects the blasting effect

When the size is large, it is easy to get stuck with the hole wall, making it impossible to reach the set position, so that the blasting operation cannot be carried out smoothly

Images