A control system for controlling the frequency of metering belts in different areas in a double-layer structure belt

A technology of sub-regional control and control system, applied in the conveyor control device, transportation and packaging, conveyor objects, etc., can solve the problem of tare weight deviation is difficult to avoid, and achieve the effect of preventing jitter, reducing measurement errors, and reducing errors.

Active Publication Date: 2022-03-08
广西南国铜业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there will be material residue on the belt, even the belt scraper cannot completely scrape off the material adhered to the belt, so the deviation of tare weight is unavoidable

Method used

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  • A control system for controlling the frequency of metering belts in different areas in a double-layer structure belt
  • A control system for controlling the frequency of metering belts in different areas in a double-layer structure belt

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0068] Experimental example 1 adopts the control mode of the speed regulation sub-module 41, the tare weight deviation of the metering belt 2 is 1kg / m, the given flow rate is 10t / h, and the given flow rate is 8≤Q s1 ≤40t / h, located in the second flow range, the metering belt 2 runs at 30Hz, and the actual speed at 30Hz is approximately equal to: 0.15*30 / 50=0.09m / s.

[0069] When there is no tare deviation, according to formula (3), Q 0s1 =(P 2 -P 3 ) s1 *0.09*3.6=10, calculated (P 2 -P 3 ) s1 = 30.86 kg / m.

[0070] When there is a tare weight deviation, according to formula (4), Q 0xs1 =(30.86-1)*0.09*3.6, calculated Q 0xs1 =9.675t / h;

[0071] According to formula (5) δ s1 =100%*(9.675-10) / 10, calculated, δ s1 = -3.25%;

[0072] It can be seen that the actual feed flow rate of the metering belt 2 in Experimental Example 1 is 9.675t / h, and the deviation is -3.25%.

[0073] After changing the control mode in combination with Comparative Example 1 and Experimental Ex...

experiment example 2

[0079] Experimental example 2 adopts the control mode of the speed regulation sub-module 41, the tare weight deviation of the metering belt 2 is 1kg / m, the given flow rate is 5t / h, and the given flow rate is 0≤Q s2 <8t / h, located in the first flow range, the metering belt 2 runs at 15Hz, and the actual speed at 15Hz is approximately equal to: 0.15*15 / 50=0.045m / s.

[0080] When there is no tare deviation, according to formula (3), Q 0s2 =(P 2 -P 3 ) s2 *0.045*3.6=5, calculate (P 2 -P 3 ) s2 = 30.864 kg / m.

[0081] When there is a tare weight deviation, according to formula (4), Q 0xs1 =(30.864-1)*0.045*3.6, calculated Q 0xs1 =4.838t / h;

[0082] According to formula (5) δ s1 1=100%*4.838-5) / 5, calculated, δ s1 = -3.24%;

[0083] It can be seen that the actual feeding flow rate of experimental example 1 is 4.838t / h, and the deviation is -3.24%.

[0084] After changing the control mode in combination with Comparative Example 1 and Experimental Example 1, the measureme...

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Abstract

The invention relates to the technical field of raw material proportioning equipment, in particular to a control system for controlling the frequency of metering belts in double-layer structure belts, including a pre-feeding belt, a metering belt and a control module. The pre-feeding belt is located in the Above the metering belt, the pre-feeding belt is driven by a first motor, and the metering belt is driven by a second motor; the control module is used to control the given flow rate of the pre-feeding belt, and the control module will set The flow data is compared with several flow ranges to determine the flow range in which the given flow is located, and the control module adjusts the rotation speed of the second motor according to the flow range to which the given flow belongs, so that the metering belt Run according to the control frequency corresponding to the current flow range. According to the flow value of the given flow, the invention adopts segmental control of the metering belt, which reduces the metering error caused by the deviation of the tare weight.

Description

technical field [0001] The invention relates to the technical field of raw material proportioning equipment, in particular to a control system for controlling the frequency of a metering belt in a double-layer structure belt by area. Background technique [0002] The double-layer structure electronic belt weighing scale has been widely used in the real-time raw material ratio control in the smelting industry. Its importance is also self-evident. The wrong ratio of raw materials will directly affect the composition of intermediate materials and may affect the safety of the furnace. Among the measurement errors, the most serious factor is the tare weight deviation of the belt scale. Because there will be material residue on the belt, even the belt scraper cannot completely scrape off the material adhered to the belt, so the deviation of tare weight is unavoidable. Contents of the invention [0003] In order to solve the above-mentioned problems, the present invention provid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65G43/08B65G47/52
CPCB65G43/08B65G47/52
Inventor 周南方杨帆付兵魏涛占焕武李龙平覃启华
Owner 广西南国铜业有限责任公司
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