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Electrical and automatic control system for pneumatic conveying system for coal ash

A technology of electric automatic control and pneumatic conveying system, which is applied in the direction of conveyors, conveying bulk materials, transportation and packaging, etc., can solve the problems of large wear of blades and cylinders, high maintenance costs and similarities, and achieve optimal control, The effect of reducing operating costs

Inactive Publication Date: 2015-04-29
NINGXIA JIAXIANG AUTOMATIC CONTROL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, high-speed screw conveyors are mostly used for domestic fly ash transportation. The disadvantages are: coal ash is very similar to sand, and coal ash itself is a material with strong friction.
Therefore, in actual production, the wear of the blade and the cylinder is relatively large, and the maintenance amount and maintenance cost are relatively high.

Method used

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  • Electrical and automatic control system for pneumatic conveying system for coal ash

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Effect test

Embodiment 1

[0011] Embodiment 1 Composition and function of an electric automatic control system of a fly ash pneumatic conveying system:

[0012] Electrical automatic control system includes PLC programmable control system 1, industrial computer or DCS system 2, Roots fan frequency conversion motor 3, high-speed sealing belt conveyor frequency conversion motor 4, pneumatic feed valve 5, pneumatic discharge valve 6, vibrating air hammer motor 7. Pneumatic circuit change valve 8. Pressure release valve 9. Centrifugal fan frequency conversion motor 10. Pulse back-blowing bag filter PLC control system 11. High-level material level gauge 12. High-level material level gauge 13. Signal transmission cable 14. Weighing Composed of sensor 15 and mass flow meter 16, it is characterized in that the electrical automatic control system is centrally controlled by PLC programmable control system 1, and its material-gas ratio is 26-28, and the system adjusts line pipe equipment according to this materia...

Embodiment 2

[0013] Example 2 The working process of the electrical automatic control system of a fly ash pneumatic conveying system:

[0014] The industrial computer or DCS system 2 uses the PLC programmable control system 1 to measure the data through the load cell 15 and the mass flow meter 16 according to the material-gas ratio, and the pneumatic feed valve under the material hopper according to the proportion value of the material-gas ratio 26-28 5. The material added in the mixing chamber of the high-speed sealed belt conveyor is transported by the Roots blower to the fly ash pipeline, and is distributed into the warehouse by the pneumatic switching valve 8 according to the process and production needs. The high-level material level gauge 12 and the low-level material level gauge 13 is installed on the silo for controlling the material level of the silo. When the pressure in the silo exceeds the set value, the pressure release valve 9 will discharge the excessive pressure, so that ...

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Abstract

The invention relates to an electrical and automatic control system for a pneumatic conveying system for coal ash. The electrical and automatic control system for the pneumatic conveying system for the coal ash is characterized in that the electrical and automatic control system is controlled in a centralized manner by a PLC (programmable logic controller) system 1; the ratio of material to air is 26-28; and line pipe equipment can be adjusted by the system according to the ratio of material to air. The electrical and automatic control system for the pneumatic conveying system for the coal ash has the advantages that actions of relevant components are relevant in a control process and are carried out automatically, the ratio of material to air can be controlled optimally in a conveying process, a Roots blower and a dust collector induced draft fan run in a variable frequency manner, and the running cost is reduced; and the control system is a comprehensive digital system which has a monitoring function and an operating function, and an operator can operate the electrical and automatic control system, and monitor and record data through a monitoring picture on a touch screen arranged in an operating room.

Description

technical field [0001] The invention relates to an electric automatic control system of a fly ash pneumatic conveying system, belonging to the technical field of electric automatic control for pneumatic conveying. Background technique [0002] At present, high-speed screw conveyors are mostly used for domestic fly ash transportation. The disadvantage is that coal ash is very similar to sand, and coal ash itself is a material with strong friction. Therefore, in actual production, the wear of the blade and the cylinder is relatively large, and the amount of maintenance and the maintenance cost are relatively high. Contents of the invention [0003] The purpose of the present invention is to improve the deficiencies of the prior art. The present invention is matched with an electric automatic control system that provides a fly ash pneumatic conveying system with less wear, less maintenance amount and less maintenance cost. The purpose of the present invention is achieved lik...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65G53/66
Inventor 郭志年
Owner NINGXIA JIAXIANG AUTOMATIC CONTROL TECH
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