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Gravel material moisture content on-line automatic detection instrument

A sand and gravel material and detector technology, which is applied in the field of sand and gravel material detection, can solve the problems of complex structure, limited capacitance method to measure moisture content, etc., and achieve strong anti-interference ability, no risk of excessive radiation, and good reliability.

Pending Publication Date: 2017-08-18
FUJIAN SOUTHERN HIGHWAY MECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages are simple and economical, high stability, and easy maintenance, but it is affected by many environmental factors such as temperature and density, and the calculated value of moisture content must be compensated by temperature compensation technology, which makes the structure more complex and limits the use of capacitance method to measure moisture content. great development

Method used

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  • Gravel material moisture content on-line automatic detection instrument
  • Gravel material moisture content on-line automatic detection instrument
  • Gravel material moisture content on-line automatic detection instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as Figure 1-2 As shown, an online automatic detector for the moisture content of sand and gravel in a silo, including a sand and gravel silo 1 and a detector 2;

[0031] The detector 2 includes a casing 11, a bolt 12, a nut 13, a set screw 14, a mounting pipe 15, a sensor 16, and a ceramic panel 17;

[0032] The silo wall of the sand and gravel silo 1 is provided with an installation opening, the casing 11 passes through the installation opening, and the side wall of the casing 11 is welded and fixed to the inner peripheral wall of the installation opening; the installation pipe 15 is penetrated in the casing 11, and Three setscrews 14 arranged circumferentially along the side wall of the casing 11 abut against the outer wall of the installation pipe 15; Connect with the nut 13 to fix the casing 11 and the installation pipe 15 after passing through the relief hole;

[0033] The sensor 16 is arranged in the casing 11, and its front end is exposed to the sand and ...

Embodiment 2

[0039] Such as Figure 4 As shown, an online automatic detector for moisture content of a gravel material conveying belt conveyor, comprising a gravel material conveying belt conveyor 4, a detector 2, and a belt conveyor detector mounting frame 3;

[0040] The detector includes bushing 11, bolt 12, nut 13, set screw 14, installation tube 15, sensor 16, ceramic panel 17; belt conveyor detector mounting frame 3 includes bending piece 31, mounting plate 32;

[0041] The bending piece 31 is two U-shaped plates placed opposite to each other, and the opening ends of the U-shaped plates are placed facing each other; the mounting plate 32 is placed above the bending piece, and the two ends of the lower surface are against the side wall of the bending piece 31 Welding; the other side wall of the bending part 31 is fixedly connected with the gravel material conveying belt conveyor 4 by bolts;

[0042]The surface of the sleeve 11 is provided with an installation opening along the axial ...

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Abstract

The invention provides a gravel material moisture content on-line automatic detection instrument. The automatic detection instrument comprises a granule feed hopper, a survey meter; an installation opening is arranged on the bulkhead of the granule feed hopper, a casing pipe passing the installation opening is welded and fixed on the internal sidewall of the casing pipe and the internal periphery wall of the installation opening; a mounting pipe is arranged in a through mode inside the casing pipe, and is connected in an abutting mode with the external wall of the mounting pipe by the three tightening screws arranged in the circumference of the lateral wall of the casing pipe; resigning bores are arranged in the corresponding location of the casing pipe and the mounting pipe, a bolt passing the resigning bores is connected with screw nuts and the casing pipe and the mounting pipe are fixed by the bolt; a sensor is arranged inside the casing pipe, the front end passing the casing pipe and situated in the granule feed hopper is exposed in the granule feed hopper; a ceramic panel is arranged on the front end of the sensor; the sensor by a RS-485 interface is connected to a display recording instrument; the capacitance of the ceramic panel is caused of change by the moisture content of the gravel, and microwave power attenuation signals are generated by the sensor.

Description

technical field [0001] The invention relates to the field of sand and gravel material detection, in particular to an online automatic detector for the moisture content of sand and gravel material. Background technique [0002] The main performance indicators to measure the quality of concrete are strength and durability. The ratio of the amount of water to the amount of cement in the concrete mixture ratio, that is, the water-cement ratio, will directly affect the strength and durability. Too little water, poor workability of concrete. Excessive moisture, excessive fluidity of concrete, increased porosity, and reduced strength. Capillary pores in concrete are channels for moisture, corrosive media, oxygen, carbon dioxide and other harmful substances to enter the interior of concrete, which affects the durability of concrete. Controlling the moisture content of sand and gravel is the guarantee of high strength and durability of concrete. [0003] The off-line method of me...

Claims

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Application Information

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IPC IPC(8): G01N22/04
CPCG01N22/04
Inventor 郑皎黄文景张宝裕郭志东陈海生梁静波
Owner FUJIAN SOUTHERN HIGHWAY MECHANICAL
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