Partitioned washing system for ordinary pressure cutterhead

Abstract

The invention provides a partitioned washing system for ordinary pressure cutterhead. The partitioned washing system comprises a cutterhead washing main pipe in communication with a main slurry inletpipe, wherein the cutterhead washing main pipe is in communication with a cutterhead central zone washing branch pipe and a cutterhead left and right zone washing main pipe; the cutterhead washing main pipe is provided with a pneumatic ball valve, a mud pump, a flowmeter and a hydraulic ball valve, the cutterhead central zone washing branch pipe is provided with a hydraulic ball valve, a flowmeterand a central washing spray head, and a hydraulic ball valve is arranged in the cutterhead left and right zone washing main pipe; the cutterhead left and right zone washing main pipe is in communication with an opening washing branch pipe and a peripheral panel washing branch pipe, the opening washing branch pipe is provided with opening washing spray heads, and the peripheral panel washing branch pipe is provided with peripheral panel washing spray heads; and central washing spray heads are located in the central zone of the cutterhead, the opening washing spray heads are located at the included angles of an adjacent main cutter beam, and the peripheral panel washing spray heads are located at the peripheral panel of the main cutter beam. According to the partitioned washing system, theslag carrying capacity of the ordinary pressure cutterhead is increased, the phenomenon of slag bringing is reduced, and washing can be carried out in specific zones, and the operation convenience andformation adaptability are increased.

Description

technical field [0001] The invention relates to the technical field of roadheaders, in particular to a sub-area flushing system of an atmospheric cutter head. Background technique [0002] The mud-water balance shield machine equipped with an atmospheric cutter head is gradually used in the construction of large-section tunnels such as crossing rivers and seas due to its unique advantages such as tool change efficiency and safety, bringing a revolution to the construction of tunnels with high water and soil pressure sexual innovation. However, due to the layout and functional requirements of the atmospheric cutter head, the atmospheric cutter head has the following two structural shortcomings: ① The thickness of the main beam of the cutter head exceeds 2 meters; Slag channel. This brings about the following problems. [0003] 1) The problem of slag carrying / slag retention: the excavation diameter of the normal pressure cutter head exceeds 11 meters, and the excavation vol...

AI Technical Summary

Problems solved by technology

[0005] The invention proposes a sub-area flushing system of the atmospheric cutter head, which improves the slag discharge efficiency in the atmospheric cutter head area, reduces the stagnant discharge of muck at the front of the cutter head; Adhesion of the row and mud cake; prevent the clogging of the scour nozzle in the central area; improve the selectivity, pertinence and convenience of scour; prevent the clogging of the pipeline caused by the backflow of muck

Images