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Weighing coal feeder

A coal feeder and weighing technology, which is applied in the direction of conveyor objects, transportation and packaging, etc., can solve problems such as inaccurate measurement, broken load cells, and easy aging and damage of load cell lines, so as to achieve accurate measurement and guarantee The effect of service life

Active Publication Date: 2017-11-17
GUIZHOU QINGCHENG MECHANICAL & ELECTRICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, with this weighing method, due to the poor environment inside the casing of the weighing coal feeder, coal powder often accumulates under the load cell, causing coal to be blocked between the load cell and the base of the load cell. powder, resulting in untrue force on the load cell, resulting in inaccurate measurement. At the same time, the load cell circuit inside the shell is easily aged and damaged due to the complex environment such as temperature and humidity inside the shell. In addition, the deviation on the conveyor belt is scattered The coal material is also easy to smash the load cell

Method used

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Examples

Experimental program
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Embodiment 1

[0040] refer to figure 1 and figure 2 : The first embodiment of the present invention provides a weighing coal feeder, the weighing coal feeder includes a housing 101, a weighing idler, a first load cell 201 and a second load cell 202, and the housing 101 is relatively The first through hole and the second through hole are provided on the two surfaces of the weighing roller. At both ends of the heavy idler, the first pressing part 203 passes through the first through hole, and the second pressing part 204 passes through the second through hole;

[0041] The weighing coal feeder also includes a first bracket 205 and a second bracket 206 arranged outside the casing 101, the first pressure applying part 203 is placed above the first load cell 201, the first pressure applying part 203 and the first pressure applying part 203 The load cell 201 is connected by bolts, the second pressure-applying part 204 is placed above the second load cell 202, and the second pressure-applying p...

Embodiment 2

[0046] refer to image 3 and Figure 4 : the second embodiment of the present invention is an improvement carried out on the basis of the first embodiment.

[0047] During the use of the weighing coal feeder, the equipment in the casing 101 will often break down, and the casing 101 of the weighing coal feeder mostly adopts a closed casing 101 made of metal, and the equipment in the casing 101 is overhauled. It is necessary to disassemble the metal shell 101, and the disassembly of the shell 101 is very troublesome. In view of this, the opposite two surfaces of the shell 101 of the weighing coal feeder provided by this embodiment are provided with a third through hole and a The fourth through hole, the third through hole is provided with a first flange plate 207 for sealing the third through hole, the first through hole is located on the first flange plate 207; the fourth through hole is provided with a fourth through hole for sealing The second flange plate 208 of the throug...

Embodiment 3

[0051] refer to Figure 5-7 : the third embodiment of the present invention is an improvement carried out on the basis of the second embodiment.

[0052] During the operation of the weighing coal feeder, errors may occur when the weighing sensor weighs. In view of this, the weighing coal feeder provided in this embodiment is also provided with a hanging code device for calibrating the weighing sensor. The device includes a first hanger 213 and a second hanger 214, the first hanger 213 is hung on the first pressure applying part 203, the second hanger 214 is hung on the second pressure applying part 204, through the hanger device The load cell can be calibrated to further ensure the weighing accuracy of the load cell.

[0053] In order to effectively protect the weighing sensor and avoid the damage of the weighing sensor under the action of external force, the weighing coal feeder provided in this embodiment is also provided with a first protective cover 215 and a second prote...

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Abstract

The invention provides a weighing coal feeder and relates to the field of metering and feeding equipment. The weighing coal feeder includes a shell, in which there is a roller driven by a motor and a conveyor belt, a weighing idler is set under the conveyor belt, a first through hole and a second through hole are set on the surface of the shell, and the two ends of the weighing idler are set. The first pressure application part and the second pressure application part passing through the first through hole and the second through hole; the weighing coal feeder also includes a first support, a second support, a first load cell and a second load cell , the first pressure part is placed above the first load cell and connected to the first load cell, the second pressure part is placed above the second load cell and connected to the second load cell; the first bracket is placed on the first The lower part of the weighing sensor is connected with the first weighing sensor, and the second support is placed under the second weighing sensor and connected with the second weighing sensor. The load cell is arranged outside the casing to ensure accurate measurement of the load cell and is not easy to be smashed by deviation materials.

Description

technical field [0001] The invention relates to the field of metering and feeding equipment, in particular to a weighing coal feeder. Background technique [0002] Weighing coal feeder is the main coal feeding equipment for circulating fluidized bed boilers and pulverized coal furnaces in coal-fired thermal power plants. It can realize continuous and uniform coal feeding, carry out accurate weighing and measurement during the coal feeding process, and automatically adjust the coal feeding amount according to the needs of the boiler combustion control system, so that the actual coal feeding amount can match the boiler load. At present, it has become the main coal feeding equipment for 12MW, 15MW, 50MW, 135MW, 240MW thermal power plants and 200MW, 300MW, 600MW coal-fired thermal power plants. [0003] At present, the weighing coal feeder that appears on the market is mainly by setting the load cell below the weighing roller in the casing of the weighing coal feeder, thereby r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65G47/19
Inventor 薛宝清
Owner GUIZHOU QINGCHENG MECHANICAL & ELECTRICAL EQUIP CO LTD