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Heading machineinternal spraying oil-water differential pressure type active sealing device and method

An oil-water differential pressure type, active sealing technology, applied in the direction of engine sealing, earthwork drilling, slitting machinery, etc., can solve problems such as short life, and achieve the effect of prolonging life, good safety, and not easy to leak

Pending Publication Date: 2019-06-07
吉林省泰嘉矿业设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to provide an active sealing device and method for spraying oil-water differential pressure in the roadheader to solve the technical problem of the short service life of the internal spraying rotating water sealing device in the prior art

Method used

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Embodiment

[0043] The lubricating oil supply device 8 includes a hydraulic cylinder 801, a piston with a rod 802, a check valve 803 and an oil supply pipe 804. The inside of the hydraulic cylinder 801 is provided with a piston with a rod 802, and the piston with a rod 802 connects the inside of the hydraulic cylinder 801. Part of it is the hydraulic cylinder oil chamber 805 and the hydraulic cylinder water chamber 806; the inlet end of the oil supply pipe 11 is fixedly connected with the outlet of the tee I 807; the first inlet of the tee I 807 is connected to the hydraulic cylinder oil chamber 805 through a pipeline , the second inlet of the three-way I 807 is connected to the outlet of the one-way valve 803 through a pipeline; the inlet of the one-way valve 803 is connected to the oil-charging pump through the oil-charging pipe 804;

[0044] The inlet end of the water supply pipe 10 is connected to the spray pump, and the outlet end is fixedly connected to the inlet of the three-way II ...

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Abstract

The invention provides a heading machine internal spraying oil-water differential pressure type active sealing device and method, and belongs to the technical field of heading machine internal spraying water sealing technologies. The active sealing device comprises a traditional rotating water sealing device, a lubricating oil supplying device and an oil passage. A traditional rotating water sealing device comprises a water distribution disc, a sealing ring and a main shaft. The sealing ring, the main shaft and the water distribution disc are connected to form three annular cavities, the middle cavity is a water cavity, and the cavities on the two sides are oil cavities. According to the heading machine internal spraying oil-water differential pressure type active sealing device and method, the water cavity is used for allowing spray pressure water to pass, the oil cavities on the two sides are used for storing lubricating oil, the lubricating oil supplying device is used for supplyingoil to the oil cavities on the two sides and maintaining pressure, and the lubricating oil forms an oil film on a sealing friction surface to separate and block invasion of the pressure water in a water blocking cavity so that the function of active sealing can be realized. A hydraulic rod and a piston with a rod are taken as thelubricating oil supplying device, and the pressure ratio of the lubricating oil and the water can beflexibly set according to the needs, water spray is provided with pressure, automatic and synchronized fluctuation of oil pressure and water pressure can be realized without an external power supply, the closed loop servo control characteristics are achieved, and the power dissipation is low.

Description

technical field [0001] The invention belongs to the technical field of spray water sealing in a roadheader, and in particular relates to a spray oil-water differential pressure active sealing device and method 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 main source of dust is the mining and excavation operation face, especially the roadheader operation face is located at the blind end of the roadway, and dust is easy to accumulate, so The "Coal Mine Safety Regulations" stipulates that the roadheader must be sprayed internally and externally during operation. At this time, the nozzles arranged on the cutting head rotate with the cutting head and spray water mist to achieve the functions of dust reduction, cooling picks and spark extinguishing. [0003] However, at present, the internal spray is often not use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C35/22F16J15/16F16J15/40
Inventor 张文涛
Owner 吉林省泰嘉矿业设备有限公司
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