Novel shaft-end sealing structure of concrete mixer

A concrete mixer and shaft end sealing technology, which is applied in the sealing of engines, cement mixing devices, mechanical equipment, etc., can solve the problems of seal rubber ring leakage, short life, unreliable shaft end sealing technology, etc., and achieve the sealing effect Good, the effect of improving the service life

Inactive Publication Date: 2012-06-13
SHANDONG MIX MACHINERY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because there is a gap in the protective ring, the mortar can easily enter the shaft end through the gap, and once the mortar enters the shaft end, it will so

Method used

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  • Novel shaft-end sealing structure of concrete mixer
  • Novel shaft-end sealing structure of concrete mixer

Examples

Experimental program
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Example Embodiment

[0014] Such as figure 1 A specific embodiment is shown, which includes a mixing cylinder 6 and a mixing shaft 1. The shaft head of the mixing shaft 1 extends from the mixing cylinder 6 to the outside of the mixing cylinder 6, and the inside of the mixing cylinder 6 is fixed with a static The sealing ring 5 and the static sealing ring 5 are sleeved on the mixing shaft 1. The part of the mixing shaft 1 located inside the static sealing ring 5 is sleeved with a retaining ring 2 and a dynamic sealing ring 4, and the retaining ring 2 is fixed on the mixing shaft 1. The sealing ring 4 and the stirring shaft 1 are connected by a guide flat key 12, and a spring 3 is connected between the movable sealing ring 4 and the retaining ring 2, and the spring 3 expands and contracts in the axial direction of the stirring shaft 1. The outer end surface of the dynamic seal ring 4 is in sealing contact with the inner end surface of the static seal ring 5. The end surfaces of the dynamic sealing r...

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PUM

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Abstract

The invention discloses a novel shaft-end sealing structure of a concrete mixer. A movable sealing ring sleeved on a mixing shaft is arranged on a portion, which is located on the inner side of a mixing barrel, of the mixing shaft, a fixed sealing ring sleeved on the mixing shaft is arranged on the mixing barrel, the movable sealing ring and the fixed sealing ring are pressed by a spring which is arranged on the mixing shaft or the mixing barrel and axially stretches and retracts on the mixing shaft, so that an end surface of the movable sealing ring hermetically contacts with an end surface of the fixed sealing ring, and both end surfaces, which contact with each other, of the movable sealing ring and the fixed sealing ring are located on the inner side of the mixing barrel. As the movable sealing ring and the fixed sealing ring are pressed by the spring so that surface contact sealing is formed, the sealing contact surfaces are located in the mixing barrel, sand in the mixing barrel cannot enter a portion, which is connected with the mixing barrel, of the mixing shaft and a portion which is located out of the mixing barrel, and a sealing effect is good.

Description

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Claims

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Application Information

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Owner SHANDONG MIX MACHINERY EQUIP
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