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Measuring device for elasticity modulus of granular sludge and measuring method thereof

A technology of granular sludge and elastic modulus, applied in measuring devices, mechanical devices, instruments, etc., can solve the problem of inability to measure the elastic modulus of small particles such as granular sludge, inability to perform elastic-plastic mechanics finite element analysis, and inability to measure The problem of small deformation of granular sludge, etc., to achieve the effect of convenient and rapid measurement, simple structure and low cost

Inactive Publication Date: 2014-09-24
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, the existing devices for measuring elastic modulus are mainly used to measure engineering materials with large shapes such as metal, concrete, rock and soil, etc., and cannot measure the elastic modulus of tiny particles such as granular sludge
The published relevant patents are all used to measure the mechanical strength of granular sludge. The structure is complex and the production cost is high. and finite element analysis

Method used

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  • Measuring device for elasticity modulus of granular sludge and measuring method thereof
  • Measuring device for elasticity modulus of granular sludge and measuring method thereof
  • Measuring device for elasticity modulus of granular sludge and measuring method thereof

Examples

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Embodiment 1

[0024] Embodiment 1 Measuring device of the present invention:

[0025] Such as figure 1 As shown, the device of the present invention includes a base 8 and a fixed support, the base is provided with an electronic balance 3 for measuring the downward force of the sludge particle load to be measured, and the electronic balance is directly above the fixed support for measuring the sludge to be measured. A dial gauge 2 for the deformation in the vertical direction produced by the mud particles, the measuring rod 22 of the dial gauge is perpendicular to the loading platform of the electronic balance, and the measuring head 21 is facing upwards. The force application mechanism of the active force; the force application mechanism is composed of an internally threaded sleeve 12 and a bolt, the sleeve is fixed on the fixed support, the bolt includes a bolt head 13 and a screw rod 14 with external threads, and the sleeve and the screw rod are threaded.

[0026] In this embodiment, the...

Embodiment 2

[0033] Embodiment 2 Measuring method of the present invention:

[0034] Specifically include the following steps:

[0035] 6) Take 10 pieces of granular sludge to be tested, and use such as figure 1 The measuring device shown respectively measures the vertical deformation H of each granular sludge under a certain vertical downward force F 0 , to measure the radius R of each granular sludge. In this embodiment, Motic Images Advanced graphics software is used to measure the radius R of the granular sludge.

[0036] 7) Establish a solid model of granular sludge in ANSYS finite element analysis software, such as figure 2 As shown, considering that the granular sludge is mostly similar to an ellipse or a sphere, the solid model 10 adopts a sphere with a radius R, and an upper pressing plate 9 is set above the sphere, which is equivalent to the lower surface of the dial indicator rod in the measuring device; a lower pressing plate 10 is set below the sphere. , which is equivalen...

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Abstract

The invention discloses a measuring device for elasticity modulus of granular sludge, which is used for measuring the vertical deformation amount of the granular sludge under certain acting force. The invention further discloses a measuring method for the elasticity modulus of the granular sludge. The measuring method comprises the following steps: establishing a solid model of the granular sludge in ANSYS software, combining with the data measured by the measuring device, and utilizing the software to automatically analyze and solve so as to obtain the elasticity modulus of the granular sludge. The measuring device comprises a base and a fixed bracket, wherein the base is provided with an electronic scale for measuring the downward acting force of load of the granular sludge to be measured; a dial gauge for measuring the vertical deformation amount generated by the granular sludge to be measured is fixedly arranged right above the base by the fixed bracket; a measuring rod of the dial gauge is vertical to an object-carrying platform of the electronic scale, and a measuring head is upward; and a force-applying mechanism for applying the downward acting force on the measuring head is fixedly arranged above the measuring head by the fixed bracket. The measuring device and the measuring method have the advantages that the structure is simple, the cost is low, and the use is convenient, so that the application in sewage treatment can be wide.

Description

technical field [0001] The invention belongs to the technical field of elastic modulus analysis and testing, and in particular relates to a measuring device and a measuring method for the elastic modulus of granular sludge formed in the wastewater biological treatment process. Background technique [0002] In the field of wastewater treatment, the cultivation of flocculent sludge into granular sludge is beneficial to the retention of microorganisms and enhances the ability to treat pollutants. Since granular sludge is easy to disintegrate, it is necessary to analyze the elastic-plastic mechanics of granular sludge , elastic modulus is an important physical property of granular sludge. [0003] Granular sludge is granular activated sludge formed by self-coagulation of microorganisms. The particle size is about 1-3mm. It is easy to break, contains more water, has low mechanical strength, and the deformation caused by deformation is small. [0004] The stress condition of gran...

Claims

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Application Information

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IPC IPC(8): G01N19/00
CPCG01N19/00
Inventor 苏馈足张帅张易培韩胜程长征陈清范文莹
Owner HEFEI UNIV OF TECH
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