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Underground mining temporary support concrete spraying sprayer device

A technology of temporary support and injection of concrete, applied in underground chambers, mining equipment, shaft equipment, etc., can solve the problems of low construction quality, small injection area, concentrated injection points, etc., to improve construction efficiency, ensure personal safety, Mild effect of spray method

Inactive Publication Date: 2014-10-08
SHANDONG HUALIAN MINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing spraying equipment is mostly point-type spraying, the nozzles are mostly circular, the spraying area is small, the spraying points are concentrated, the resilience is large, the construction quality is low, and the construction risk is high

Method used

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  • Underground mining temporary support concrete spraying sprayer device

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Effect test

Embodiment Construction

[0011] Embodiments of the present invention are further described below in conjunction with accompanying drawings:

[0012] Such as figure 1 As shown, the underground mining temporary support spraying nozzle device of the present invention includes a concrete inlet pipe 3, and the concrete inlet pipe 3 is connected to the middle part of one side of the buffer box 2, and the other side of the buffer box 2 is symmetrically provided with a nozzle 1, and the nozzle 1 They are all inclined towards the middle of the buffer box 2, the spraying directions of the nozzles 1 converge at one point, and the nozzles of the nozzles 1 are oblate.

[0013] Working principle and process:

[0014] When working, the concrete slurry enters the buffer tank 2 from the concrete inlet pipe 3, fills the buffer tank 2 and sprays it out from the nozzle 1. The nozzles of the two nozzles 1 are flat and circular, and the spraying method is linear spraying, which reduces the rebound rate. Because the nozzl...

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Abstract

The invention relates to a concrete spraying device, in particular to an underground mining temporary support concrete spraying sprayer device. The underground mining temporary support concrete spraying sprayer device comprises a concrete inlet pipe connected with the middle of one side of a buffer tank, spray nozzles are symmetrically arranged on the other side of the buffer tank, both the spray nozzles incline towards the middle of the buffer tank, the spraying directions of the spray nozzles intersect at a point, spray openings of the spray nozzles are oblate, and construction efficiency is improved.

Description

technical field [0001] The invention relates to a concrete spraying device, in particular to a concrete spraying nozzle device for underground mining temporary support. Background technique [0002] Sprayed concrete, also known as shotcrete, is a construction method of spraying and pouring fine stone concrete with a pressure spray gun. It is often used for pouring tunnel linings, walls, ceilings and other thin-walled structures or linings of other structures and protective layers of steel structures. When it is mostly used in construction, it is advisable to use the method of mixing and spraying to reduce the consistency change. The injection speed of this method is low, and the initial strength of the concrete is also low due to the increase of the water-cement ratio, but the rebound situation is improved, the material matching is easy to control, and the work efficiency is higher than that of the dry mixing method. Put the pre-prepared cement, sand, stones, water and a ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10
Inventor 孙彦庆陈刚王海东亓超
Owner SHANDONG HUALIAN MINING