Multi-point sealing apparatus for auxiliary high-pressure water jet of cutting mechanism of digging device

A high-pressure water jet and sealing device technology, used in hydraulic mining, earth-moving drilling, slitting machinery, etc., can solve the problems of easy failure and leakage, poor rotary sealing effect, affecting the parts in the cutting box, etc. Good effect, long sealing time and high efficiency

Active Publication Date: 2013-07-10
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing mining equipment can only solve the low-pressure rotary seal of the internal spray system, but for the auxiliary high-pressure water jet, the rotary seal effect is not good, and it is easy to fail and leak, which affects the normal operation of the parts in the cutting box and reduces the auxiliary cutting effect

Method used

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  • Multi-point sealing apparatus for auxiliary high-pressure water jet of cutting mechanism of digging device
  • Multi-point sealing apparatus for auxiliary high-pressure water jet of cutting mechanism of digging device
  • Multi-point sealing apparatus for auxiliary high-pressure water jet of cutting mechanism of digging device

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Experimental program
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Effect test

Embodiment 1

[0016] Such as figure 1 with 2 As shown, the multi-point sealing device 7 of the present invention is arranged between the cutting box 4 and the cutting shaft 1 . The multi-point sealing device 7 includes a water guide casing 7-1 and a water guide casing 7-4, and the water guide casing 7-4 and the water guide casing 7-1 are sequentially set on the cutting shaft 1 and the cutting mechanism of the mining equipment. Between cutting box 4. The left end of the water guide shell 7-1 is against the end cover 5, and the right end of the water guide shell 7-1 is fixed with the cutting box 4 by the bolt 3 8; the right end of the water guide sleeve 7-4 is passed through the retaining ring 7-5 It is axially fixed with the cutting shaft 1; the water guide sleeve 7-4 and the water guide housing 7-1 can freely rotate.

[0017] On the water guide shell 7-1, the water guide sleeve 7-4 and the cutting shaft 1, a water inlet 7-2 is arranged radially through, and the upper and lower ends of th...

Embodiment 2

[0021] Such as figure 1 with 3 As shown, the difference between embodiment two and embodiment one is: change the number of discharge channels 7-7 and leakage channels 7-9 on both sides of the water inlet channel 7-2 from four to one, and the discharge channels 7-7 It is arranged on the outside of the tooth-shaped combined seal 7-6 farthest away from the water inlet 7-2. When the excavation equipment cutting mechanism is working, once water flows out from the leaking channel 7-9, it indicates that the entire multi-point sealing device 7 is invalid, and it is necessary to check and replace the relevant seals.

[0022] The multi-point sealing device 7 of the second embodiment has a simple and reliable structure, can effectively monitor the effective sealing time of the entire tooth-shaped combined seal 7-6, and is suitable for high-pressure water jet rotary sealing assisted by cutting mechanisms of mining equipment in engineering applications.

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Abstract

The invention discloses a multi-point sealing apparatus for an auxiliary high-pressure water jet of a cutting mechanism of a digging device. The apparatus comprises a water guide housing and a water guide sleeve which are sequentially sleeved between a cutting shaft and a cutting box of the cutting mechanism of the digging device, wherein a water inlet channel is arranged along a radial direction through the water guide housing, the water guide sleeve and the cutting shaft, the water inlet channel is respectively communicated with a water inlet of the cutting box and a main channel of the cutting shaft, two sides of the water inlet channel are respectively provided with an O-shaped sealing ring I, a tooth combination seal and an O-shaped sealing ring II, the water guide housing is provided with a sluicing groove, and the cutting box is provided with a leaking channel communicated with the sluicing groove. The multi-point sealing apparatus provided by the invention solves the sealing problem of the auxiliary high-pressure water jet of the cutting mechanism of the digging device, can effectively seal a high-pressure water with a pressure of less than 50 MPa, is long in sealing time and good in sealing effect, and improves an auxiliary cutting efficiency of the high pressure water jet.

Description

technical field [0001] The invention relates to an auxiliary high-pressure water jet multi-point sealing device for a cutting mechanism of mining equipment, which is suitable for high-pressure rotary sealing in the cutting mechanism of mining equipment. Background technique [0002] In view of the small space and high rock hardness of the thin coal seam semi-coal roadway, small mining equipment with low power is generally used for mining, but the mining efficiency is low. In order to improve the mining efficiency, only increasing the power of the mining equipment without increasing the size of the cutting mechanism will inevitably cause serious wear of the cutter and pose a safety hazard. Based on this, a high-pressure water jet auxiliary mining device has been developed, but it is urgent to solve the problem of high-pressure rotary sealing. The existing mining equipment can only solve the low-pressure rotary seal of the internal spray system, but for the auxiliary high-pre...

Claims

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Application Information

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IPC IPC(8): E21C35/00E21C45/04
CPCE21C35/00
Inventor 刘送永崔新霞刘增辉江红祥刘林生刘晓辉陈俊锋
Owner CHINA UNIV OF MINING & TECH
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