Pipe conveying device and switching valve thereof

Abstract

The invention discloses a switching valve which comprises a valve body, a valve core, a driving device and a main pipe. A plurality of branch pipes which are communicated and sequentially arranged on one side of the outer wall of the valve body are communicated with the tail end of the main pipe. A plurality of output pipes are communicated with the other side of the outer wall of the valve body. Through holes for communicating the corresponding branch pipes with the output pipes are formed in the valve core. When the valve core slides to the set position inside the valve body, one branch pipe on one side of the outer wall of the valve body is communicated with the corresponding output pipe on the other side of the outer wall of the valve body through the corresponding through hole; the number of the output pipes of the switching valve is adjustable, no large turning angle exists in the switching process, the switching resistance and impact on the valve core are small, and therefore the switching valve can achieve on-off switching of the pipes in a long-term and efficient mode. The invention further discloses a pipe conveying device comprising the switching valve.

Description

technical field [0001] The invention relates to the field of conveying concentrated materials, in particular to a switching valve. In addition, the present invention also relates to a pipeline conveying device comprising the above switching valve. Background technique [0002] High-concentration filling refers to reprocessing solid waste such as mine waste and municipal solid waste into high-concentration slurry, using large-scale filling industrial pumps, and transporting them to the goaf under the mine through pipelines, and timely replacement mining. It can achieve the purposes of safe mining, improving resource recovery rate and reducing surface waste discharge, so it is more and more widely used. [0003] In the process of high-concentration filling, in order to reduce investment and operation costs, the high-concentration slurry is usually transported to the area to be filled through a main pipeline, and then through the switching valve to realize the connection and d...

AI Technical Summary

Problems solved by technology

However, when the inlet and outlet of the concentrated material are connected with the groove 5, the pipeline curvature is too large, the resistance of the pipeline is large, the energy loss is high, and the concentrated material is easy to be ejected from between the valve core 2 and the valve body 1; in this state, The spool 2 will be subjected to continuous high-intensity impact of the concentrated material, and the driving device 3 needs to work continuously to prevent the spool 2 from moving, so the strength requirements for the driving device 3 are relatively high; Pipeline on-off switch, limited application

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