CN2840515Y

CN2840515Y - Speed varying controller for wet intermittent ball grinder

Info

Publication number: CN2840515Y
Application number: CNU2005200656939U
Authority: CN
Inventors: 唐慧光
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-10-14
Filing date: 2005-10-14
Publication date: 2006-11-22
Anticipated expiration: 2015-10-14

Abstract

The utility model discloses a speed varying controller for a wet intermittent ball grinder, which belongs to the field of control technology of ball grinders. The utility model solves the technical problem that the rotation speed of the wet intermittent ball grinder can be automatically adjusted along with the change of ball grinding process conditions so as to ensure high efficient work of the wet intermittent ball grinder, effectively improve ball grinding productivity and save electric energy. Thus, the input end of the ball grinder is connected with the speed varying controller, and the controller forms a closed ring control system by a sensor, the ball grinder and a motor thereof, a hydraulic coupler, a mechanical speed variator, an electric and hydraulic manipulator, a CPU controller and an electronic conversion card. Correlative control parameters are inputted, analyzed and operated by the CPU controller, and then, signals of real-time rotation speeds of a roller of the ball grinder can be obtained. The variable speed ratio of the mechanical speed variator can be controlled by the electric and hydraulic manipulator, and as a consequence, the speed of the roller can be controlled. The ball grinder using the speed varying controller can shorten ball grinding time and improve product quality and productivity, besides, the energy saving effect can achieve more than 10 percents.

Description

The variable-speed controller that a kind of wet method intermittent ball mill is used

Technical field

The utility model relates to ball mill control technology field, the variable-speed controller that particularly a kind of wet method intermittent ball mill is used.

Background technology

Whether appropriate, the production capacity and the unit electrical power consumed of this ball mill produced a very large impact if being used for its working speed of wet method intermittent ball mill that raw mineral materials pulverizes.Existing ball mill all adopts the one fluid coupling transmission of belt one gear, generally is to have fixed a kind of constant rotational speed according to the balling drum diameter, and this speed only is applicable to a certain specific operation.When being in process conditions such as different phase when material, the water yield, abrasive body and grinding and changing, ball mill just is not in optimal operational condition.So, a series of problems such as now the ball mill ubiquity yields poorly, the ball milling time is long, power consumption is many.

Summary of the invention

The variable-speed controller that provides a kind of wet method intermittent ball mill to use is provided the purpose of this utility model, makes this drum's speed of rotation change and regulate automatically with the ball-milling technology condition, to guarantee its efficient operation, improve ball milling output effectively, saves energy.

The technical solution that the utility model proposed is such: the automatic shift control device that a kind of wet type intermittent ball mill is used, comprise ball mill 6 and motor 3 thereof, described ball mill input is connected to variable-speed controller, and this controller is formed a closed loop Mechatronic control system by transducer 2, ball mill motor 3, fluid coupling 4, mechanical transmission 5, ball mill 6, electricity, liquid executor 7, cpu controller 8 and conversion electron card 10; Described ball mill motor 3 output shafts connect with mechanical transmission 5 power shafts by fluid coupling 4, and mechanical transmission 5 output shafts connect with ball mill 6 roller shafts; The voltage of input ball mill motor 3, electric current and electrical power parameter feed back to cpu controller 8 inputs by transducer 2, the rotating speed of ball mill 6 cylinders, acceleration and status signal feed back to cpu controller 8 inputs after conversion electron card 10 transforms, cpu controller 8 also is connected to input and the display unit 9 that is used to monitor controlled parameter signals and input parameter preset, the parameter preset signal is directly imported cpu controller 8 inputs, carry out the analysis-by-synthesis computing through cpu controller 8 in house softwares, the real-time tach signal of ball mill 6 cylinders that obtained through, the gear ratio of liquid executor 7 control mechanical transmissions 5.

Compared with prior art, the utlity model has following beneficial effect:

(1) owing in the wet method intermittent ball mill, adopted the variable speed ball grinding method, makes the ball milling body adapt to the grinding environment and the material of different nature of continuous variation at any time, and remain at operation under the efficient state the grinding interaction energy of grinding charge material.By automatic detection ball mill load variations all the time, through computing and output ball mill optimum speed instruction in real time, make ball mill be in high efficiency grinding state all the time, thereby shortened the ball milling time, increased output, saved energy consumption, energy-saving effect reaches more than 10%.

(2) owing to adopted the variable speed ball grinding method, the rotating speed of ball mill can be regulated automatically according to the different situations of grinding in the cylinder, make it to adapt with the fragmentation and the required rotating speed of grinding stage of grinding, so, the variable speed ball milling is compared with the fixed rotating speed ball milling, and the product particle particle size distribution of variable speed ball milling narrows down, the corresponding increase of fine particle, thereby improved the ball milling product quality, stable processing technique and reliability are improved.

The utility model can be widely used in the wet type batch (-type) ball-grinding machine of industries such as cement, pottery, chemical industry, mine, metallurgy.

Description of drawings

Fig. 1 is a kind of variable-speed controller electromechanical structure block diagram that is used for the wet method intermittent ball mill of the utility model.

Embodiment

By following embodiment the utility model is further elaborated.

Referring to shown in Figure 1, the variable-speed controller that inserts electromechanical integration at wet type intermittent ball mill input automatically adjusts to the balling drum rotating speed, and this automatic shift control device is formed a closed loop speed adjustment system by transducer 2, ball mill motor 3, fluid coupling 4, mechanical transmission 5, ball mill 6, electricity, liquid executor 7, cpu controller 8 and conversion electron card 10.

Three-phase 380V AC power is through air switch 1 input ball mill motor 3, and the mechanical power of these motor 3 outputs is exported to mechanical transmission 5 through fluid coupling 4, and output drives the rotation of ball mill 6 cylinders after speed change.The gear ratio of described mechanical transmission 5 will be controlled through electricity, liquid executor 7 by cpu controller 8.When the voltage that inputs to ball mill motor 3, the electric parameter of reflection such as electric current and electrical power load variations feeds back to cpu controller 8 by transducer 2, and the rotating speed of ball mill 6, when feeding back to cpu controller 8 after acceleration and grinding status signal are transformed by conversion electron card 10 again, cpu controller 8 according to above-mentioned feedback signal after the in house software computing, exporting each best constantly ball mill 6 tach signal gives, liquid executor 7, again by, liquid executor 7 goes to handle the speed of mechanical transmission 5, thereby realize regulating ball mill 6 rotating speeds in real time automatically, make ball mill 6 reach most effective and energy-saving and cost-reducing.Cpu controller 8 also is connected to input and display unit 9, can monitor and import our parameters needed by it.

Concrete parameter of this example and comparative test result are as follows:

Be applied in 14T wet method intermittent ball mill, its motor rated power is 90kw.

When (1) adopting conventional permanent rotating speed mode ball milling, the ball milling time average is: 13.4 hours/every ball, and electricity consumption 819 degree (kw.h).

When (2) adopting the mechanical variable speed device ball milling, the ball milling time average is:

12.9 hour/every ball, electricity consumption 677 degree (kw.h).

Both compare, electrical energy saving:

\frac{819 - 677}{819} \times 100 % = 17.34 %

Saving ball milling time: 13.4-12.9=0.5 (hour/every ball).

Through check, adopt the product of above-mentioned mechanical speed change mode ball milling, the thinner particle proportion of its fineness has increased during than the constant speed ball milling, so powder quality is improved, and then to make with this powder be that the technology stability and the reliability of the subsequent handling of raw material is improved, and produces bigger economic benefit.

Claims

1, the variable-speed controller used of a kind of wet method intermittent ball mill, comprise ball mill (6) and motor (3) thereof, it is characterized in that: described ball mill input is connected to variable-speed controller, and this controller is formed a closed loop Mechatronic control system by transducer (2), ball mill motor (3), fluid coupling (4), mechanical transmission (5), ball mill (6), electricity, liquid executor (7), cpu controller (8) and conversion electron card (10); Described ball mill motor (3) output shaft connects with mechanical transmission (5) power shaft by fluid coupling (4), and mechanical transmission (5) output shaft connects with ball mill (6) roller shaft; The voltage of input ball mill motor (3), electric current and electrical power parameter feed back to cpu controller (8) input by transducer (2), the rotating speed of ball mill (6) cylinder, acceleration and status signal feed back to cpu controller (8) input after conversion electron card (10) transforms, cpu controller (8) also is connected to input and the display unit (9) that is used to monitor controlled parameter signals and input parameter preset, the parameter preset signal is directly imported cpu controller (8) input, carry out the analysis-by-synthesis computing through cpu controller (8) in house software, the real-time tach signal of the ball mill that is obtained (6) cylinder through, the gear ratio of liquid executor (7) control mechanical transmission (5).