Overload protection system for coarse screening in pulping
An overload protection and coarse screen technology, applied in textiles and papermaking, fiber raw material processing and other directions, can solve problems such as unfavorable production operation stability, stuck, coarse screen stuck, etc., to improve production stability, avoid sliding, The effect of reducing the load
Active Publication Date: 2019-10-11
SHANYING INT HLDG CO LTD
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Problems solved by technology
[0002] The original coarse screen motor control logic is that when the motor current reaches 105%, the system will report high, and when the current reaches 120%, the system will report high, and the protection will trip after a delay of five seconds, which will cause the coarse screen to be stuck and must be shut down.
At the same time, due to the coarse screen equipment driven by the motor, the belt is blown due to high current, and the materials in the equipment and the screen drum are squeezed out and stuck, which is not conducive to improving the stability of production operation.
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[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0041] see Figure 1-9 As shown, the present embodiment provides an overload protection system for a coarse screen for pulping, including a coarse screen control module, a motor detection module, a transmission belt protection module, a power wheel 1, an output wheel 2, and a transmission belt 3, and the power wheel 1 is connected with the output wheel 2 through the transmission belt 3;
[0042] The motor detection module is used to detect the current of the motor...
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The invention discloses an overload protection system for coarse screening in pulping. A motor detection module is used for detecting the current of a motor and sending a control signal when the current reaches 90% of a preset value; a coarse screening control module is used for receiving the control signal, switching off a good pulp valve of a screen cylinder after the control signal is receivedand simultaneously sending a protection signal; a transmission belt protection module is used for receiving the protection signal and cooling a transmission belt after the protection signal is received; when overload is about to occur, the coarse screening control module switches off the good pulp valve of the screen cylinder, so that the motor is protected, coarse screening equipment is preventedfrom being stuck, and the production stability is improved. The transmission belt can be cooled to be prevented from being burnt out at high temperature; the transmission belt can be prevented from sliding, so that transmission is more stable. A coolant passes through a passage to carry away heat, and therefore the transmission belt is effectively cooled.
Description
technical field [0001] The invention relates to the technical field of pulping, in particular to an overload protection system for coarse screens in pulping. Background technique [0002] The original coarse screen motor control logic is that when the motor current reaches 105%, the system will report high, and when the current reaches 120%, the system will report high, and the protection will trip after a delay of five seconds, which will cause the coarse screen to be stuck and must be shut down for processing. At the same time, due to the coarse screen equipment driven by the motor, the belt is blown due to high current, and the materials in the equipment and the screen drum are squeezed out and stuck, which is not conducive to improving the stability of production operation. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the object of the present invention is to provide an overload protection system for pulping coarse screen...
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IPC IPC(8): D21D5/02
CPCD21D5/02
Inventor 刘文明李聪定陶晓农王才友陶齐和
Owner SHANYING INT HLDG CO LTD