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Mixing device for improving measurement precision of shield slurry densimeter

A technology for measuring accuracy, mixing devices, applied in the direction of measuring devices, mixers with rotating containers, mixers, etc.

Pending Publication Date: 2021-07-06
STATE KEY LAB OF SHIELD & TUNNELING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to propose a mixing device for improving the measurement accuracy of the shield mud density meter, which can solve the measurement error caused by the stratification of the shield mud density meter in the prior art. problem, improve the measurement accuracy of shield mud density

Method used

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  • Mixing device for improving measurement precision of shield slurry densimeter
  • Mixing device for improving measurement precision of shield slurry densimeter

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Experimental program
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specific Embodiment 1

[0023] Such as Figure 1-Figure 2 As shown, the present invention is installed between two mud pipes 1 when in use, and is located upstream of the radioactive density meter (not shown in the figure) in the flow direction of the mud. 4, the inner drum 2 is rotatably assembled inside the outer drum 3 through the self-aligning roller bearings 6 located outside both ends of the inner drum 2. The outer wall is interference fit, and the outer wall of the inner drum 2 is provided with installation grooves on the two sides of the two self-aligning roller bearings 6 facing away from each other for installing the retaining ring 7. The retaining ring 7 is used to limit the self-aligning roller bearing in one direction. 6; in addition, the inner wall of the outer cylinder 3 is provided with an annular step surface 8 between the two self-aligning roller bearings 6 for respectively axially blocking and cooperating with the two self-aligning roller bearings 6, through the above-mentioned Th...

specific Embodiment 2

[0029] The difference from Embodiment 1 is that the drum gear is fixed on the outer side wall of the inner drum.

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Abstract

The invention relates to a mixing device for improving the measurement precision of a shield slurry densimeter. The mixing device comprises an external motor positioned on the outer side of slurry pipes, and an inner roller and an outer cylinder which are coaxial with the slurry pipe, the inner roller is rotatably assembled in the outer cylinder, and a roller gear is fixed or integrally formed on the outer side wall of the inner roller; the output end of the external motor is connected with a driving gear in a rotation stopping mode. The position, corresponding to the roller gear, of the outer cylinder is provided with an extending-in opening allowing the driving gear to extend in and being in meshing transmission with the roller gear. The outer cylinder is used for being fixedly connected with two slurry pipes, the two ends of the inner roller extend into the two slurry pipes respectively, and sealing rings used for being matched with the two slurry pipes in a sealing mode are arranged on the outer side walls of the two ends of the inner roller respectively. During use, the inner roller is driven by the driving gear to rotate, and the slurry is uniformly mixed along with the inner roller, erors caused by layering and uneven density to subsequent density measurement can be reduced, and the density measurement precision is improved.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, in particular to a mixing device for improving the measurement accuracy of a shield mud density meter. Background technique [0002] In the field of shield construction technology, a radioactive densitometer is usually used to measure the density of shield mud. The emission source in the radioactive densitometer emits gamma rays to the receiving probe. There is a certain relationship, and the density of the medium is measured non-contact according to the above principles. [0003] When the shield mud is transported in the mud pipe, the mud in the mud pipe is usually a non-uniform two-component liquid, and the mud flows in layers, and the density between the upper liquid and the lower liquid is different, which gives the radioactive density installed on the mud pipe. The measurement work of the shield machine brings large errors, and the measurement accuracy of the shield mud density is ...

Claims

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Application Information

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IPC IPC(8): B01F9/06G01N9/24B01F29/63
CPCG01N9/24B01F29/63
Inventor 曾垂刚吕乾乾张彦伟李治国杨振兴张兵赵海雷孙飞祥王利明翟乾智张继超王发民
Owner STATE KEY LAB OF SHIELD & TUNNELING TECH