Internal spray oil-water isolation rotary sealing system of multistage mechanical sealing type coal mining machine

An oil-water isolation and mechanical sealing technology, applied in the direction of engine sealing, slitting machinery, mechanical equipment, etc., can solve problems such as increased wear and seal failure, and achieve the effect of improving safety and life.

Active Publication Date: 2018-05-29
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

However, the existing sealing form belongs to the soft-to-hard rotary friction fit, and the joint area of ​​the sealing lip is in a grinding state after accumulating impurities, and the aggravated wear causes the seal to fail

Method used

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  • Internal spray oil-water isolation rotary sealing system of multistage mechanical sealing type coal mining machine
  • Internal spray oil-water isolation rotary sealing system of multistage mechanical sealing type coal mining machine
  • Internal spray oil-water isolation rotary sealing system of multistage mechanical sealing type coal mining machine

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Embodiment Construction

[0031] A multi-stage mechanical seal type coal shearer internal spray rotary sealing system, comprising a housing 1, a water pipe 28, and a pipe shaft seat 30, characterized in that: a threaded hole 16 and a plug are provided on one end surface of the housing 1 The cover 3 and the housing 1 are provided with a water inlet chamber 41, a rotary water seal drain hole 47, a primary seal dynamic ring 10 and a primary seal static ring 11, and one end of the rotary water seal drain hole 47 is provided with a hollow The screw plug 13, the hollow screw plug 13 is provided with a gasket 14 and a rubber pad 15 inside; the first-level sealing static ring 11 and the first-level sealing dynamic ring 10 form a friction pair seal;

[0032] The inline shaft sleeve 6 is connected to the first-stage sealing moving ring 10 through a sealing ring and driven by the inner teeth of the outer coupling shaft sleeve 4. The inline shaft sleeve 6 is connected and sealed with the water pipe 28 through a sea...

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Abstract

The invention discloses an internal spray oil-water isolation rotary sealing system of a multistage mechanical sealing type coal mining machine, and belongs to the technical field of coal mining machine sealing systems. The internal spray oil-water isolation rotary sealing system comprises a housing, a water pipe, a secondary sealing seat and a pipe shaft seat; a threaded hole is formed in and a blocking cap is arranged on the end face of one side of the housing; a water inlet chamber, a rotary water sealing drainage opening, a primary movable sealing ring and a primary stationary sealing ringare arranged in the housing; a spindle nose key groove I is formed in one end of the water pipe; a spindle nose key groove II is formed in the other end of the water pipe; a hollow plug screw is arranged at one end of the rotary water sealing drainage opening; a gasket and a rubber pad are arranged in the hollow plug screw; the secondary sealing seat is in sealing connection with the housing through a sealing ring; and a needle roller bearing, a secondary stationary sealing ring, a secondary movable sealing ring, a secondary ejection and pressing spring, a secondary water seal and a secondarydriving bolt are arranged in the secondary sealing seat. With the adoption of the water pipe provided with driving key grooves at the two ends and the pipe shaft seat arranged in multiple stages of sealing units in use, a waterway is turned from a static state into a rotating transportation state, so that the life of the multistage mechanical sealing type coal mining machine is prolonged.

Description

technical field [0001] The invention belongs to the technical field of coal shearer sealing systems, and in particular relates to a multi-stage mechanical seal type coal shearer internal spray rotary sealing system. Background technique [0002] Underground dust control in coal mines is one of the key tasks. Dust exceeding the standard has a great impact on the working environment. To prevent coal workers' pneumoconiosis, the dust content must reach the standard. [0003] At the same time, coal dust can also cause safety accidents such as explosions. More than 80% of the coal dust is produced when the shearer drum cuts the coal wall, so Article 636 of the "Coal Mine Safety Regulations" stipulates: "Article 636 The shearer must be installed with internal and external spraying When cutting coal, it must be sprayed to reduce dust. The working pressure of the internal spraying should not be less than 2MPa, and the working pressure of the external spraying should not be less tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/3284F16J15/324E21C35/22
CPCE21C35/22F16J15/324F16J15/3284Y02P70/10
Inventor 张文涛孙阳春
Owner 吉林省泰嘉矿业设备有限公司
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