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Continuous slurry preparation method and system based on PLC system

A technology for mixing pulp and pulp, applied in the field of papermaking, can solve the problems of inability to continuously and automatically mix pulp, and achieve the effects of saving labor costs, improving production efficiency, and adding high precision.

Pending Publication Date: 2022-04-12
ZHEJIANG HUAZHANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a continuous slurry mixing method and system based on the PLC system to solve the problem that the current slurry mixing technology cannot continuously and automatically mix the slurry

Method used

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  • Continuous slurry preparation method and system based on PLC system
  • Continuous slurry preparation method and system based on PLC system
  • Continuous slurry preparation method and system based on PLC system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] image 3 Shown, a kind of continuous slurry mixing method based on PLC system provided for an embodiment of the present invention, comprises the following steps:

[0060] Step S100, obtaining the addition ratio and set output value of each raw material in the mixing tank;

[0061] Specifically, such as figure 2 As shown, the continuous pulping method based on the PLC system disclosed in the embodiment of the present invention is manually input or obtained from the cloud during operation. The addition ratio of each raw material and the set output value in the pulping process, for example, , the addition ratio of long fiber pulp, the addition ratio of short fiber pulp and the addition ratio of broke pulp;

[0062] Wherein, the set output value is the amount of paper produced in this pulping process;

[0063] In some examples, the addition ratio of each raw material and the set output value can be input through the host computer or pre-stored in the production plan in ...

Embodiment 2

[0111] The invention also discloses a continuous slurry mixing system based on the PLC system, such as Figure 6 As shown, the system 400 includes:

[0112] An acquisition unit 401, configured to acquire set parameters and actual flow values ​​of each flow control valve, wherein the set parameters are the addition ratio of each raw material and the set output value;

[0113] Calculation unit 402, configured to calculate the set value of each flow control valve according to the set parameters;

[0114] The control unit 403 is used to control the flow of each raw material and the flow of the sizing system according to the set value of each flow control valve;

[0115] Wherein, the acquisition unit 401 is electrically connected to the calculation unit 402 to transmit the value, and the calculation unit 402 is electrically connected to the control unit 403 to transmit the value;

[0116] In this embodiment, the acquisition unit 401 acquires the set parameters and the actual flow...

Embodiment 3

[0147] The present invention also discloses a computer program stored therein. When the computer program is executed by a processor, the processor executes the PLC system-based continuous slurry mixing method described in Embodiment 1.

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Abstract

The invention relates to the technical field of papermaking, and particularly provides a continuous pulp preparation method and system based on a PLC system, and the method comprises the following steps: obtaining the adding proportion and the set yield value of each raw material in a mixed pulp tank; generating a set value of a flow control valve on a feeding pipeline of each raw material and a set value of a flow control valve on a sizing system based on the adding proportion of each raw material and a preset yield value; the flow of each raw material and the flow of the sizing system are controlled by a PLC (Programmable Logic Controller) based on the set value of each flow control valve; according to the continuous pulp mixing method and system based on the PLC system, raw materials are automatically and continuously mixed in the mixing pulp tank in the papermaking process, and therefore the labor cost is saved.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a continuous pulp mixing method and system based on a PLC system. Background technique [0002] In a paper mill, the types of paper produced will be produced according to customer needs. Different types of paper require different ratios of long and short fibers, or the same type of paper often needs to adjust the ratio due to the amount of damaged pulp. For the stability of the sizing process, the liquid level of the mixing tank should also be controlled within a stable range. If it is too low, the slurry will stop, and if it is too high, it will easily spill out. Large fluctuations will also lead to unstable sizing pressure, which will lead to instability of the entire sizing Therefore, it is particularly important to need a system that can automatically mix pulp and ensure continuous production. [0003] Pulp mixing in paper mills is often done manually, that is, the opera...

Claims

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Application Information

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IPC IPC(8): G05B19/05
CPCY02P90/02
Inventor 倪锋吾夏斌赵东明韩拥春王爱燕
Owner ZHEJIANG HUAZHANG TECH
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