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Constant Torque Control Method for Horizontal Screw Decanter

A technology of a decanter centrifuge and a control method, which can be applied in directions such as centrifuges, can solve problems such as the deterioration of clear liquid turbidity, and achieve the effect of ensuring that it does not exceed the standard.

Inactive Publication Date: 2017-01-18
SHANGHAI CENTRIFUGE INST
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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 constant torque control method for a decanter centrifuge, which combines Differential speed adjustment and feeding amount adjustment can not only achieve the purpose of constant torque, but also ensure that the clear liquid does not exceed the standard

Method used

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  • Constant Torque Control Method for Horizontal Screw Decanter
  • Constant Torque Control Method for Horizontal Screw Decanter

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Embodiment Construction

[0018] Below in conjunction with embodiment, the present invention is described in detail

[0019] as attached figure 2 As shown, a constant torque control method of a decanter centrifuge is characterized in that it comprises the following steps:

[0020] In the first step, the centrifuge is rotated at high speed,

[0021] The second step is to feed the material to the centrifuge. Under the action of centrifugal force, the material begins to separate from solid to liquid, and the torque begins to rise;

[0022] In the third step, as long as the differential speed is detected the set torque value, the PID adjustment will cause the differential speed to rise. The increase in the differential speed will shorten the time that the material stays in the centrifuge and the separation effect will decrease. The torque falls back to the set torque value;

[0023] If the actual detected torque is less than the set torque value, the PID adjustment will cause the differential speed to...

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Abstract

A constant torque control method for horizontal screw decanter, combining differential adjustment and feed adjustment, achieves constant torque without exceeding any standard.

Description

technical field [0001] The invention relates to the technical field of parameter control of a decanter centrifuge, in particular to a constant torque control method of a decanter centrifuge. Background technique [0002] Such as figure 1 As shown, the decanter centrifuge is usually used for solid-liquid separation. The centrifuge drum and the hydraulic motor are coaxially installed in one piece. Driven by the main motor, the drum and the hydraulic motor rotate at high speed. The hydraulic pump station supplies oil to the hydraulic motor and recovers oil through the hydraulic rotary joint. The output shaft of the hydraulic motor drives the screw to rotate in the same direction as the drum. The screw has a differential speed relative to the drum, and the differential speed depends on the oil supply of the hydraulic pump station. volume control. The solid phase of the material is settled to the inner wall of the drum under the action of centrifugal force, forming a mud cake w...

Claims

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Application Information

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IPC IPC(8): B04B13/00
CPCB04B13/00
Inventor 陆炯陆中华钱国平张敏
Owner SHANGHAI CENTRIFUGE INST
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