Drum type boosting multi-ring composite sealing handle body

Abstract

The invention discloses a drum type boosting multi-ring composite sealing handle body, comprising a handle body; two mutually vertical cylindrical holes are formed in the handle body; one hole is a vertical hole for sealing a hydraulic cylinder and a piston column; the other hole is a cross hole for mounting a three-use valve; a liquid-filling through hole is formed between the two holes; the vertical hole is provided with a seal ring slot internally provided with a seal ring; upper and lower end faces of the handle body seal ring slot are provided with through holes communicated with a hydraulic cavity; the end face, facing the through holes, of the seal ring is provided with a boosting structure communicated with the through holes; the boosting structure comprises a buffering slot communicated with the through holes and a seal ring boosting cavity positioned inside the buffering cavity; and a support partition plate is arranged between the buffering slot and the boosting cavity and is provided with 1-N liquid injecting holes communicated with the buffering slot and the boosting cavity. The inner and outer seal cylindrical faces of the seal ring are divided into 1-N seal ring faces. Compared with the prior art, the drum type boosting multi-ring composite sealing handle body has the advantage of realizing the aims of drum type boosting sealing and multi-ring composite sealing by matching the handle body and the drum type boosting multi-ring composite seal ring and forming through holes in the end face of the seal ring slot for liquid injection.

Description

technical field [0001] The invention relates to a handle body, in particular to a drum-shaped pressurized multi-ring composite sealed handle body. Background technique [0002] At present, the national utility model second prize product (ZL 02160388.X) used for mine underground support is a suspended single hydraulic prop handle body such as figure 1 As shown, 21—sealed handle body; 22—Y-shaped sealing groove; 23—liquid injection hole; 24—three-purpose valve installation hole; 25—handle body handle. There are two types of seals used in the handle body: [0003] One is the Y-ring seal, such as figure 2 Shown: rely on A, B two sides to seal. [0004] Working principle: The working fluid enters the working chamber of the single hydraulic prop through the liquid injection hole. Under the action of the liquid pressure, the A and B of the Y-shaped sealing ring face the inner side (piston rod) and the outer side (the bottom surface of the handle body sealing groove). Together...

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to overcome the defects of poor sealing effect and short service life of the current handle body, and provide a drum-type pressurized multi-ring composite seal handle body, which is equipped with a new composite seal and opened on the end face of the ring groove. Liquid injection through the hole to achieve efficient sealing on both sides

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