Glaze supply system flow control method
A glaze supply system and flow control technology, which is applied in the field of glaze supply system and flow control of glaze supply system, can solve the problems of low accuracy and long time, and achieve the effect of high accuracy, fast and accurate switching
Active Publication Date: 2016-03-30
广州朗高科技有限公司
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Problems solved by technology
[0002] The glaze supply system is widely used as a system that can set the glaze flow rate. The existing glaze supply system generally uses a screw pump to transport, and a mass flow meter is installed at the outlet of the screw pump to measure the flow at the outlet of the screw pump and Feedback controls the speed of the screw pump. At the same time, the glaze supply system realizes the automatic control of the glaze flow through the PID controller. Since the physical properties of each batch of materials used in the glaze supply system have a small difference, after changing different batches of materials, it can be The actual flow of the glaze reaches the set flow value through the PID controller, but after the set flow value is changed, it takes a long time (about 5-10s) for the actual flow of the glaze to reach the set flow value, and the accuracy is not good. high
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[0019] Such as figure 1 As shown, a flow control method for a glaze supply system. The glaze material of the glaze supply system is conveyed by a screw pump, and a mass flow meter is installed at the outlet of the screw pump to measure the output flow of the screw pump, and the glaze supply system is controlled by PID The device realizes automatic control of the glaze flow rate, and the method includes the following steps:
[0020] a) Set the constant for control: set several flow values according to the flow range of the glaze supply system i (i = 0, 1, 2, 3...n); in two adjacent flow values flow i , Flow i+1 Set the flow setting value between set i (i=0,1,2,3...n), and make flow i i ≤flow i+1 ; Start the glaze supply system so that the flow of the glaze liquid in the pipes in the glaze supply system reaches the set value set i , And record the corresponding speed out of the screw pump in the glaze supply system i ;
[0021] b) Set screw pump speed: set the flow value of the gl...
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The invention discloses a glaze supply system flow control method. The glaze supply system flow control method is characterized in that corresponding rotating speed of a screw pump can be calculated according to a flow value required to be set; when the current flow is changed to the flow value required to be set, a PID controller can be set to be an open loop, and the rotating speed of the screw pump is the calculated rotating pump of the screw pump, and then after two seconds, the PID can be set to be the closed loop. The glaze supply system flow control method is advantageous in that the flow of the glaze supply system can be switched quickly and accurately; when the set flow value is changed, the actual flow of the glaze can reach the set flow value in a short time, and the accuracy is high.
Description
Technical field [0001] The present invention mainly relates to the technical field of glaze supply system, in particular to the technical field of flow control of glaze supply system. Background technique [0002] The glaze supply system is widely used as a system that can set the glaze flow rate. The existing glaze supply system generally uses a screw pump for delivery. A mass flow meter is installed at the outlet of the screw pump to measure the flow rate at the outlet of the screw pump. Feedback controls the speed of the screw pump. At the same time, the glaze supply system realizes automatic control of the glaze flow rate through the PID controller. Because the physical characteristics of each batch of materials used in the glaze supply system are slightly different, after changing different batches of materials, The PID controller makes the actual flow of the glaze reach the set flow value, but after the set flow value is changed, it takes a long time (about 5-10s) for the a...
Claims
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IPC IPC(8): G05D7/06
CPCG05D7/0617
Inventor 刘冰林任志
Owner 广州朗高科技有限公司