A waste grease automatic draining device based on a sealing ring

Abstract

The invention provides an automatic waste oil discharge device based on sealing rings. The device at least comprises an equipment end cap, a rotary shaft, a movable ring and a static ring. The movable ring is composed of an inner movable ring body, an outer movable ring body and a connection ring, the rotary shaft is axially sleeved with the inner movable ring body, the inner movable ring is sleeved with the outer movable ring, an axial flow guide stair is distributed on the outer circumference of the left end of the outer movable ring body, and a stirring stair is evenly distributed on the outer circumference of the right end of the outer movable ring body. The static ring is composed of an inner static ring body, an outer static ring body, a fixing ring and an isolation ring, the isolation ring is fixed to the inner circumference of the right end of the outer static ring body and located between the flow guide stair and the stirring stair, the inner static ring body is located between the inner movable ring body and the outer movable ring body, an axial through oil discharge channel is formed in the isolation ring and located above the axis of the rotary shaft, and an oil discharge hole is formed in the position, corresponding to the flow guide stair, at the bottom of the fixing ring. By means of the automatic waste oil discharge device, automatic oil discharge can be achieved, and meanwhile the holding volume of oil in a sealing cavity is guaranteed.

Description

Technical field [0001] The invention provides a sealing device used in a rotating shaft or a gear box, in particular to a waste grease automatic draining sealing device used in a large-diameter rotating shaft, and belongs to the technical field of sealing. Background technique [0002] The labyrinth seal is to set a number of circular sealing teeth arranged in sequence around the rotating shaft. A series of interception gaps and expansion cavities are formed between the teeth and the teeth. When the sealed medium passes through the gaps of the tortuous labyrinth, a throttling effect is generated to prevent leakage. The purpose of the device. Because there is a gap between the rotor and the casing of the labyrinth seal, there is no solid contact, and thermal expansion is allowed, so it is suitable for high temperature, high pressure, high speed and frequency occasions. This type of seal is widely used in steam turbines, gas turbines, compressors, and blowers The shaft end and the...

AI Technical Summary

Problems solved by technology

Second, in the process of degreasing, the discharged grease should preferably be waste and old grease or a mixture of old and new grease, and the newly added grease cannot be discharged, and the current sealing device for automatically draining waste grease cannot meet the above requirements

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