Control method and controller of vertical crusher

A control method and technology of a grinding machine, applied in grain processing, etc., can solve problems such as surplus, operation stop, etc., and achieve the effect of suppressing abnormal vibration and reducing noise

Active Publication Date: 2009-12-02
UBE MASCH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In practice, however, even if the material is still somewhat remaining on the rotary table, in many cases, after a certain time has been counted, the motor is stopped, thereby stopping the operation

Method used

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  • Control method and controller of vertical crusher
  • Control method and controller of vertical crusher
  • Control method and controller of vertical crusher

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Embodiment Construction

[0063] Preferred embodiments associated with a vertical grinder control method according to the present invention will be described below with reference to the accompanying drawings.

[0064] figure 1 is an illustration diagram for illustrating a schematic configuration of a vertical grinder that realizes the control method for the vertical grinder according to the first embodiment of the present invention. figure 2 It is an illustration diagram conceptually illustrating a grinding system using the same vertical grinding machine. image 3 It is a graph showing the relationship between the crushing amount and the air volume in the same vertical grinder. Figure 4 It is a graph showing the relationship between the table rotation speed of the rotary table and the load of the grinder in the same vertical grinder. Figure 5 It is a graph showing the relationship between the velocity of powdery particles inside the same vertical mill and the coefficient of dynamic friction. Fig...

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Abstract

When material supply amount to a vertical crusher (1) is reduced, the number of revolutions of a rotary table (2) is decreased before the material supply amount is varied actually. In other words, when the vertical crusher (1) is stopped, the number of revolutions of a motor (2M) for driving the rotary table (2) is decreased from the rated number of revolutions by inverter control upon receiving a signal for varying the supply amount from a boiler master at the controller (50A) in a control panel (50) before supply amount of new material into the vertical crusher (1) is varied, thus decreasing the number of revolutions of the rotary table (2). Thereafter, material supply is varied actually upon elapsing a predetermined time. Since the vertical crusher (1) can be stopped while the work load thereof is suppressed and the thickness of a material layer on the rotary table (2) is kept at a predetermined height, abnormal vibration can be prevented effectively during a stop operation and generation of noise can be suppressed.

Description

technical field [0001] The present invention relates to a control method and a controller for a vertical mill mainly used for grinding materials such as coal, oil coke, limestone, slag, slag, ceramic materials and chemicals, and More particularly, it relates to a control method and a controller for a vertical grinder adapted to prevent or suppress abnormal vibrations that are easily caused when grinding materials in the vertical grinder. Background technique [0002] Conventional grinders used to grind coal, oil coke, etc. include widely used grinders such as what is called a vertical grinder (also called a vertical grinder or a vertical drum grinder). [0003] In recent years, vertical grinders have been increasingly used especially for pulverizing materials, and types of vertical grinders including a sorting mechanism inside the vertical grinder have increased. A vertical grinder including such a sorting mechanism is known in the prior art, as disclosed in Patent Document...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C25/00B02C15/04
CPCB02C25/00B02C15/04
Inventor 池田充繁本康弘
Owner UBE MASCH CORP LTD
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