CN87208973U - Liquid coupler using water as medium - Google Patents

Abstract

The utility model utilizes the clear water as the working medium and adopts a novel slide bearing as the support in the cavity of a main shaft. Members in the cavity are all made of the material which has strong corrosion resistance and rust-prevention, and the utility model overcomes the defects that the liquid coupler using oil as the medium is easy to burn and blast, having full-load, and being difficult to be started when the liquid coupler using oil as the medium works underground. The utility model has the advantages of simple structure, long service life, high efficiency, energy saving, high capacity, strong corrosion resistance, and small friction coefficient.

Description

Liquid coupler using water as medium

The utility model be a kind of be the hydraulic transmission component of working medium with the clear water, be applicable to that coal mine operation has on the drive unit of equipment such as the scraper conveyor of requirement of explosion proof and Belt Conveyors.

At present, adopting with oils at the great majority of coal mine operation is the fluid coupling of working medium, exists the two large problems of " inflammable ignition " and " full load starting difficulty ".Some units are engaged in the research that replaces oils to use with " high moisture fire resistant liquid " in YL type fluid coupling, obtained certain effect.But because the structure of fluid coupling does not become, rolling bearing is immersed in the fire resistant liquid and turns round, and loses due film lubrication condition and gets rusty, increases rolling resistance, and steel part is had " hydrogen embrittlement " effect, reduce rolling bearing working life, influenced the use of fluid coupling.And the cast aluminum impellers in high temperature (70～120 ℃) fire resistant liquid and blade produce the intergranular corrosion that is difficult to find, influences impeller intensity and working life.And the steel member turns round in high-temperature water liquid and very easily gets rusty and also have " hydrogen embrittlement " effect, " high moisture fire resistant liquid " in use to influence use because of easily decompositing the solid separator in the chamber, and the liquid cost is also higher.Therefore, be that the fluid coupling of working medium is still had any problem in applying with " high moisture fire resistant liquid ".

Fluid power connection draft gage factory of Tongchuan, Shaanxi Province Mining Bureau is recently, in order to use with the clear water is working medium, changed the arrangement (see figure 1) of YL type fluid coupling rolling bearing, rolling bearing (1-1) has been isolated inner chamber with cup packing circle (1-2).Except that making complex structure, rolling bearing and water liquid do not disengage yet, so the problems referred to above are still unresolved.

For addressing the above problem, the utility model is a working medium with the clear water, has designed the fluid coupling new structure, it is by pump impeller, turbine, backward auxiliary chamber shell, shell, main shaft, bearing, seal ring, fusible plug, compositions such as fluid injection plug, wherein, main shaft chamber internal support adopts novel sliding bearing, with clear water compatibility is preferably arranged, and other member in its chamber is all made with anticorrosive, rust preventive material.

Further specify below in conjunction with embodiment:

Fig. 1 has aqueous medium fluid coupling structural drawing now.

Fig. 2 the utility model structural drawing.

As Fig. 2, the sliding bearing in the main shaft chamber (6) is to be that the composite material of surface layer is made with the polytetrafluoroethylene (PTFE), and frictional force is little, long service life.Rolling bearing (7) then is isolated in outside the cavity by two cup packing circles (8), by grease lubrication.For preventing that clear water produces intergranular corrosion to member under the high temperature, with the stronger cast aluminium alloy of anti intercrystalline corrosion ability as pump impeller (3), turbine (4), the material of shell (5) and backward auxiliary chamber shell (2).Simultaneously main shaft (1) and turbine (4) be connected rivet (9) and fusible plug (11), fluid injection plug (10) is all made to be out of shape extra super duralumin alloy (Lc4) material, and make the main shaft hard chromium plating, solved the difficult problem that each steel part easily gets rusty, and avoided the harm of " hydrogen embrittlement " effect, save energy simultaneously.

Water medium hydraulic coupler except explosion-proof and energy-conservation, also have concurrently use convenient, improve operation rate, and exempted because of disadvantages such as oil spout contaminated environment.

Claims (1)

1, a kind of aqueous medium fluid coupling, be by pump impeller, turbine, shell, the backward auxiliary chamber shell, main shaft, bearing, seal ring, fusible plug, compositions such as fluid injection plug, it is characterized in that: the bearing in the main shaft chamber is sliding bearing (6) and is its surface layer by the polytetrafluoroethylene composite material, pump impeller (3), turbine (4), shell (5) and backward auxiliary chamber shell (2) are all made with cast aluminium alloy, main shaft (1) and turbine (4) be connected rivet (9) and fusible plug (11), fluid injection plug (10) all adopts aluminum alloy material, the main shaft hard chromium plating.

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