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Mortar box stirring-shaft sealing device for shield equipment

The technology of mixing shaft and mortar is applied in the field of mortar box, which can solve the problems of easy leakage or leakage, difficult repair work, poor sealing effect, etc., and achieves the effects of long service life, simple structure and improved service life.

Inactive Publication Date: 2012-08-08
DALIAN HUARUI HEAVY IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the mortar box of the grouting system of shield tunneling equipment for existing tunnel excavation, the seal of the stirring shaft is usually sealed by the traditional stuffing box packing gland type. The sealing effect of the traditional seal is poor, and problems such as leakage or leakage are prone to occur. , since the medium is mortar, once leakage or leakage occurs, it is easy to cause damage to the stirring shaft, resulting in greater leakage and difficult repair work

Method used

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  • Mortar box stirring-shaft sealing device for shield equipment
  • Mortar box stirring-shaft sealing device for shield equipment
  • Mortar box stirring-shaft sealing device for shield equipment

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Embodiment Construction

[0014] Such as figure 1 , figure 2 As shown, a mortar box mixing shaft sealing device for shield equipment is composed of a bracket 1, a compression mechanism, a support mechanism and a sealing assembly. The compression mechanism includes a compression device I 7 and a compression device II15, and the compression device I 7 is provided with screw plug 8. The sealing assembly includes corner seal 11, corner seal gland 12, floating seal 6, O-ring I 10, O-ring II 13, O-ring III 16 and O-ring IV 17, and corner seal 11 is made of nitrile rubber (NBR), the corner seal belongs to the end face seal, which generates deformation through axial compression, forms a seal, and prevents the mortar from seeping out; the floating seal is a special form of mechanical seal, also known as the mechanical end face seal. Composed of ground metal seal ring and O-ring seal, it has super sealing performance under harsh working conditions such as sediment, water vapor, etc., has the characteristics o...

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Abstract

The invention discloses a mortar box stirring-shaft sealing device for shield equipment.The mortar box stirring-shaft sealing device comprises a support, a compaction mechanism, a support mechanism and a seal assembly and is characterized in that an end plate of the mortar box body is fixed with the support sheathed on the outside of the stirring shaft; a corner seal is fixed at a support end portion close to a mortar box body side through a corner seal gland; compaction equipment II is arranged at an inner side of the support, and is sleeved and fixed on a stirring shaft; compaction equipment I is further sleeved and fixed on the stirring shaft; a support mechanism is fixed between the compaction equipment II and the compaction equipment I; two floating seals are arranged at both bearing pedestal ends in the support mechanism and compacted tight through the compaction equipment II and the compaction equipment I; the stirring shaft is sleeved and fixed with a circular nut, and the circular nut is fixed at a lateral side of the compaction equipment I. The mortar-box agitating-shaft sealing device for shield equipment provided in the invention can effectively prevent slurry leakage from end portions of the stirring shaft to the outside of the mortar box. Service life of the device is lengthened, and the device is easy to be replaced and can greatly reduce manufacture cost.

Description

technical field [0001] The invention relates to a mortar box of shield equipment for tunnel excavation, which can also be used in cement mixing devices in the construction industry, in particular to a mortar box stirring shaft sealing device for shield equipment. Background technique [0002] At present, in the mortar box of the grouting system of shield tunneling equipment for existing tunnel excavation, the sealing of the stirring shaft usually adopts the traditional stuffing box packing gland type seal. The sealing effect of the traditional seal is poor, and problems such as leakage or leakage are prone to occur , Since the medium is mortar, once leakage or leakage occurs, it is easy to cause damage to the stirring shaft, resulting in greater leakage and difficult repair work. Contents of the invention [0003] According to the technical problem raised above, a mortar box stirring shaft sealing device for shield equipment is provided. The present invention mainly utili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/16
Inventor 赵芳王幸福张丽华王晓曲明月潘景敖
Owner DALIAN HUARUI HEAVY IND GRP CO LTD
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