High-pressure water sealing device for heading machine and heading machine

Abstract

The invention discloses a high-pressure water sealing device for a heading machine and a heading machine. The high-pressure water sealing device comprises a sealing baffle ring (2), a rotary Glyd ring (3), a sealing ring (4), a wear-resistant ring (6), a flat key (7) and a baffle ring (8). The sealing baffle ring is fixed to a coupling cylinder (1), the sealing ring is installed on a rotary main shaft, an O-shaped ring is arranged between the sealing baffle ring and the coupling cylinder, an O-shaped ring is arranged between the sealing ring and the rotary main shaft, the wear-resistant ring and the rotary Glyd ring are installed between the sealing baffle ring and the sealing ring, the flat key is arranged between the sealing ring and the rotary main shaft, the rotary main shaft is provided with a groove, and the baffle ring is arranged in the groove. The high-pressure water sealing device improves cutting unit water-stopping effects and inner spray waterway use effects, improves a downhole operation environment, guarantees worker health, reduces a cutting teeth wear rate and a rotary main shaft wear degree and improves cutting unit reliability.

Description

technical field [0001] The invention relates to a water sealing device, in particular to a high-pressure water sealing device for a roadheader, and also to a roadheader comprising the above-mentioned high-pressure water sealer, which belongs to the technical field of roadheaders. Background technique [0002] In the operation of mechanized coal mining, the roadheader is one of the main mining equipment, which drives the rotary cutting of the cutting head through the cutting arm to realize the excavation of the roadway. During the working process of the roadheader, a large amount of dust will be generated, which seriously affects the health of the operators, and even suffers from pneumoconiosis. Therefore, improving the underground environment and reducing the dust concentration has become an urgent problem for the industry. At the same time, during the working process of the roadheader, the temperature of the pick is likely to be too high, which accelerates the loss of the p...

AI Technical Summary

Problems solved by technology

In order to prevent the water in the inner spraying waterway from infiltrating into the oil cavity of the cutting part, a sealing device needs to be added. Most of the sealing devices used are rotary sealing devices. This kind of rotary sealing device has poor pressure bearing capacity and unsatisfactory sealing effect. The phenomenon of oil mixing, and once water enters the oil cavity of the cutting arm, it is easy to cause damage to the cutting arm. The cutting arm is a key component of the roadheader, which is expensive and difficult to repair after damage

Moreover, during the construction process, insufficient internal spray water pressure will indirectly lead to blockage of the internal spray nozzle, making the internal spray waterway useless and failing to achieve the effect of dust removal and cooling

In addition, the rotating spindle is easy to wear, which greatly increases the cost of use and affects the construction efficiency

Because of the above reasons, many operators directly don't use the internal spray waterway that was originally set up for optimization, resulting in this function becoming tasteless

[0004] However, the Chinese patent roadheader internal spray sealing device (patent No. 200920100043) disclosed on February 24, 2010 and the Chinese patent disclosed on November 12, 2008 (patent No. 200720185208) ) provides two kinds of rotary sealing devices, but this device requires a large assembly space, which is undoubtedly difficult to realize for precise and compact parts such as cutting arms; in addition, this device uses a hose to connect the outer sealing sleeve and the cutting Arm outer cylinder, when the cutting arm is working, there will be a tendency to pull the hose, and the hose is easily damaged by pulling, which will affect the normal operation of the cutting arm; moreover, because the whole of the device is in the oil chamber, And when there is no seal damage, guide water to flow out of the water discharge slot of the cutting arm. Once any seal is damaged, the water will directly infiltrate into the oil chamber, which is comparable to the actual effect of only using the rotary seal ring to seal.

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