Multi-stage mechanical seal type roadheader internal spray rotary water seal device

Abstract

The invention provides a multi-stage mechanical sealing type internal spray rotating water sealing device of a heading machine and belongs to the technical field of internal spray water sealing devices of the heading machine. The water sealing device comprises a shell, a water channel, a dustproof ring, a drive pin, a first-stage chamber, a space bush ring groove, a spindle water channel, a spacer bush, a first-stage static ring, a glyd ring, a spring, a synchronous rotating disk, a locating pin, a second-stage static ring, a third-stage static ring, an O-type ring, a second-stage chamber oil channel, a third-stage chamber oil storage chamber, a third-stage chamber oil channel, a second-stage chamber oil storage chamber, a driven disk and a pressure relief valve. A plurality of units are adopted for forming the multi-stage sealing chambers for sealing, and the chamber sealing unit of the next stage is entered after the first-stage chamber sealing unit fails; at ordinary times, the chamber of the next stage is filled with lubricating oil used for cooling and lubricating a friction pair. The pressure relief valve drains pressure water and has the safe and early-warning effects. The water sealing device adapts to water-free dry friction, ultrahigh water pressure and radial and axial large dynamic beating play working conditions, and the service life of an internal spray system can be long.

Description

technical field [0001] The invention belongs to the technical field of a spray water sealing device in a roadheader, and in particular relates to a multi-stage mechanical seal type spray rotary water seal device in a roadheader. Background technique [0002] Dust exceeding the standard in coal mines is one of the main hazards, which can cause safety accidents such as explosions, and is also the cause of pneumoconiosis. The nozzle is arranged next to the pick on the cutting head. When cutting coal and rock, it rotates with the cutting head and sprays water mist to realize the functions of dust reduction, cooling and spark extinguishing. [0003] However, at present, internal spraying is often not used as the most effective means of dust reduction in excavation work. The main reason is that the existing rotary water sealing device has a short service life and cannot be expected. Some can be used for one or two months and some can only be used It can be used for a few days, an...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a multi-stage mechanical seal type roadheader internal spray rotary water seal device, which is used to solve the problem that the existing rotary water seal device has a short service life and unpredictable service life; the nozzle of the internal spray is often blocked ; At present, the rotary water seal is an axial rotary seal with low working pressure, which cannot adapt to long-term anhydrous operation, and has no technical problems such as reliable insurance and early warning functions.

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