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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, which is applied in hydraulic mining, earthwork drilling, cutting machinery, etc., can solve the problems of easy failure and leakage, poor rotating sealing effect, and affecting parts in the cutting box, etc., to achieve improved High efficiency, long sealing time and good sealing effect

Active Publication Date: 2015-05-20
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
Comparison scheme
Effect test

Embodiment 1

[0016] like figure 1 and 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 the wa...

Embodiment 2

[0021] like figure 1 and 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

A multipoint sealing device for the auxiliary high-pressure water-jet of a mining equipment cutting mechanism, comprising a water-conducting casing (7-1) and a water-conducting sleeve (7-4); the water-conducting sleeve (7-4) and the water-conducting casing (7-1) are sequentially sleeved between the cutting shaft (1) and cutting tank (4) of the mining equipment cutting mechanism; a water-inlet channel (7-2) is provided radially through the water-conducting casing (7-1), the water-conducting sleeve (7-4) and the cutting shaft (1); the water-inlet channel (7-2) respectively communicates with the water inlet of the cutting tank (4) and the main flow channel (1-1) of the cutting shaft (1); the two sides of the water-inlet channel (7-2) are respectively provided with a first O-shape seal ring (7-3), a toothed combination seal (7-6) and a second O-shape seal ring (7-8); the water-conducting casing (7-1) is provided with a drainage groove (7-7) thereon; and the cutting tank (4) is provided with a water leakage channel (7-9) thereon in communication with the drainage groove (7-7). The multipoint sealing device solves the sealing problem of the auxiliary high-pressure water-jet of the mining equipment cutting mechanism, effectively sealing the high-pressure water having a pressure of less than 50 MPa, providing a long-lasting seal and good sealing effect, and improving the 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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Patent Type & Authority Patents(China)
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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