Mining rotor type variable shotcrete machine

Abstract

The invention discloses a mining rotor type variable shotcrete machine. The mining rotor type variable shotcrete machine comprises a frame, a rotor block, a drive motor, a gun head injection pipe and a hopper, wherein a plurality of U-shaped cavities penetrating through the rotor block and having fan-shaped sections are distributed in the rotor block in the circumferential direction; the gun head injection pipe comprises a conical spiral feeding pipe and a conical discharging pipe, one end, with smaller diameter, of the conical spiral feeding pipe is connected with an injection pipe base, and the other end is connected with one end, with larger diameter, of the conical discharging pipe; with the adoption of the U-shaped cavity structures, the fan-shaped cavities replace cylindrical cavities, so that the volume efficiency of the cavities realizes maximum, the section utilization rate of the rotor block is increased, air feeding and material discharging are more continuous and more uniform, the pulse phenomenon of material discharging is greatly reduced, and resilience and dust are reduced. Meanwhile, the gun head injection pipe is spliced by two sections of conical pipes, so that an injection material and water are mixed sufficiently and uniformly, the injection quality is improved, the injection layer is more compact, and homogeneity and strength are improved.

Description

technical field [0001] The invention relates to a concrete sprayer, in particular to a mine rotor type variable variable concrete sprayer. Background technique [0002] In the traditional rotor concrete spraying machine, the rotor system mostly adopts a cylindrical material chamber, and the spray pipe of the gun head is a single cone, that is, its diameter gradually decreases from the nozzle seat to the discharge port, which is used to increase the amount of concrete mixed raw materials. The spraying speed is high, but due to the large interval between the cylindrical material chambers, the pulse phenomenon occurs when the concrete spraying material is sprayed out, which affects the spraying quality of the concrete, and the spraying tube of the gun head adopts a single taper, which is easy to cause spraying The mixing of material and water is uneven and sufficient, the material rebounds greatly when spraying, and the material utilization rate is low. Contents of the invent...

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Problems solved by technology

[0002] In the traditional rotor concrete spraying machine, the rotor system mostly adopts a cylindrical material chamber, and the spray pipe of the gun head is a single cone, that is, its diameter gradually decreases from the nozzle seat to the discharge port, which is used to increase the amount of concrete mixed raw materials. The spraying speed is high, but due to the large interval between the cylindrical material chambers, the pulse phenomenon occurs when the concrete spraying material is sprayed, which affects the spraying quality of the concrete, and the spraying tube of the gun head adopts a single taper, which is easy to cause spraying The mixing of material and water is uneven and sufficient, the material rebounds greatly when spraying, and the material utilization rate is low

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