CN2845913Y - Open ring speed changing controller for wet intermittent ball mill - Google Patents

Abstract

The utility model discloses an open ring speed changing controller for a wet intermittent ball mill, which belongs to the field of control technology of ball mills. The utility model is to solve the technical problem that the rotation speed of the wet intermittent ball mill can be automatically adjusted along with the change of ball milling process conditions so as to ensure high efficient work of the wet intermittent ball mill, effectively improve ball-milling production capacity and save electric energy. Thus, the input end of the ball mill is connected with a speed changing controller which forms an open ring control system by a program controller, a speed changer and a motor of the ball mill. Preset operating parameter voltage, current, rotation speed and time control signals can be output to the speed changer from the program controller. The output end of the speed changer is connected with a rotating shaft of a rolling drum of the ball mill by the motor of the ball mill or directly connected with the rotating shaft of the rolling drum of the ball mill, and the preset operating parameter control signals output by the program controller can control the speed of the rolling drum of the ball mill by the speed changer. The ball mill using the speed changing controller can shorten ball milling time and improve product quality and production capacity, besides, the energy saving effect can achieve more than 8 percents.

Description

The open loop 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 open loop 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 belt-gear-fluid coupling transmission, 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 open loop variable-speed controller that provides a kind of wet method intermittent ball mill to use is provided the purpose of this utility model, and this drum's speed of rotation can be changed and programme-control to guarantee its efficient operation, improves ball milling output effectively, saves energy with the ball-milling technology condition.

The technical solution that the utility model proposed is such: the open loop variable-speed controller that a kind of wet method intermittent ball mill is used, comprise ball mill 4 and motor 3 thereof, described ball mill 4 inputs are connected to variable-speed controller, and this controller is formed an open-loop control system by cyclelog 1, speed changer 2, ball mill motor 3; Predefined ball mill 4 operation parameter voltages, electric current, rotating speed and time control signal export speed changer 2 to from cyclelog 1, and these speed changer 2 outputs pass through ball mill motor 3 or directly connect with ball mill 4 roller shafts.For electric controling mode, described speed changer 2 is a frequency converter, the control signal of cyclelog 1 output is transported to the frequency converter input, and its output and ball mill motor 3 inputs are electrically connected, and ball mill motor 3 output shafts and ball mill 4 roller shafts link.For mechanical, electrical integrated mode, described speed changer 2 is made up of electricity, liquid executor 2-1, mechanical transmission 2-2, fluid coupling 2-3, the control signal of cyclelog 1 output is transported to electricity, liquid executor 2-1 input, its output is connected with mechanical transmission 2-2 control input end, ball mill motor 3 main shafts link by fluid coupling 2-3 and mechanical transmission 2-2 power shaft, and mechanical transmission 2-2 output shaft and ball mill 4 roller shafts link.

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 grinding environment and the material of different nature that bigger variation constantly takes place, and remain at operation under the efficient state the grinding interaction energy of grinding charge material.Thereby shortened the ball milling time, increased output, saved energy consumption, energy-saving effect reaches more than 8%.

(2) owing to adopted the variable speed ball grinding method, make the rotating speed of ball mill carry out programme-control 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 grained, 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 open-cycle controller electric control principle block diagram that is used for the wet method intermittent ball mill of the utility model.

Fig. 2 is the mechanical, electrical integral structure block diagram of open loop variable-speed controller that the utility model another kind is used for the wet method intermittent ball mill.

The specific embodiment

By following embodiment the utility model is further elaborated.

Embodiment 1

Referring to shown in Figure 1, be connected to the open loop variable-speed controller at wet type intermittent ball mill 4 inputs the balling drum rotating speed is carried out the speed adjusting, this variable-speed controller is formed an open loop speed adjustment system by cyclelog 1, frequency converter 2, ball mill motor 3, ball mill 4.Frequency converter 2 is by external 380V ac power supply, cyclelog 1 exports predefined ball mill operation parameter voltage, electric current, rotating speed, time control signal to frequency converter 2 signal input parts, goes to control the rotating speed and the torque of ball mill motor 3 according to certain frequency, electric current, the electrical power parameter signals of these signal frequency conversion device 2 outputs.Remove to regulate automatically ball mill 4 rotating speeds by the period, make grinding efficiency the highest and energy-saving and cost-reducing.

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: 13.5 hours/every ball, and electricity consumption 819 degree (kwh).

During the automatically controlled speed change ball milling of (2) employing program, the ball milling time average is: 13.2 hours/every ball, and electricity consumption 697 degree (kwh).

Both compare, using electricity wisely: $\frac{819-697}{819}\×100\%=14.89\%$

Saving ball milling time: 13.5-13.2=0.3 (hour/every ball).

Through check, adopt the product of the automatically controlled gear shift mode ball milling of said procedure, the thinner particle proportion of its fineness is than the increase of constant speed ball milling method, improved powder quality, and then to make with this powder be that the technology stability and the reliability of the subsequent handling of raw material is improved, thereby produce bigger economic benefit.

Embodiment 2

Referring to shown in Figure 2, be connected to mechanical, electrical incorporate variable-speed controller at wet type intermittent ball mill 4 inputs ball mill 4 drum rotation speeds are automatically adjusted, this automatic shift control device is formed an open loop speed adjustment system by cyclelog 1, electricity, liquid executor 2-1, ball mill motor 3, mechanical transmission 2-2, fluid coupling 2-3, ball mill 4.

Three-phase 380V AC power is through air switch input ball mill motor 3, and the mechanical power of these motor 3 outputs is exported to mechanical transmission 2-2 power shaft through fluid coupling 2-3, and output drives the rotation of ball mill 4 cylinders after speed change.The gear ratio of described mechanical transmission 2-2 will be controlled through electricity, liquid executor 2-1 by cyclelog 1.Cyclelog 1 is defeated by electricity, liquid executor 2-1 with predefined ball mill 4 operation parameter control signals by the period, go to handle the speed of mechanical transmission 2-2 again by electricity, liquid executor 2-1, thereby realize programme-control ball mill 4 rotating speeds, make ball mill 4 reach most effective and energy-saving and cost-reducing.

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: 13.5 hours/every ball, and electricity consumption 819 degree (kwh).

When (2) adopting dynamo-electric speed change ball milling, the ball milling time average is: 13.4 hours/every ball, and electricity consumption 721 degree (kwh).

Both compare, using electricity wisely: $\frac{819-721}{819}\×100\%=11.97\%$

Saving ball milling time: 13.5-13.4=0.1 (hour/every ball).

Through check, adopt the product of said procedure variable speed mode ball milling, the thinner particle proportion of its fineness is than the increase of constant speed ball milling method, improved powder quality, and then to make with this powder be that the technology stability and the reliability of the subsequent handling of raw material is improved, thereby produce bigger economic benefit.

Claims (3)

1, the open loop variable-speed controller used of a kind of wet method intermittent ball mill, comprise ball mill (4) and motor (3) thereof, it is characterized in that: described ball mill (4) input is connected to variable-speed controller, and this controller is formed an open-loop control system by cyclelog (1), speed changer (2), ball mill motor (3); Predefined ball mill (4) operation parameter voltage, electric current, rotating speed and time control signal export speed changer (2) to from cyclelog (1), and this speed changer (2) output passes through ball mill motor (3) or directly connects with ball mill (4) roller shaft.

2, open loop variable-speed controller according to claim 1, it is characterized in that: described speed changer (2) is a frequency converter, the control signal of cyclelog (1) output is transported to the frequency converter input, its output and ball mill motor (3) input are electrically connected, and ball mill motor (3) output shaft and ball mill (4) roller shaft link.

3, open loop variable-speed controller according to claim 1, it is characterized in that: described speed changer (2) by, liquid executor (2-1), mechanical transmission (2-2), fluid coupling (2-3) is formed, the control signal of cyclelog (1) output is transported to, liquid executor (2-1) input, its output is connected with mechanical transmission (2-2) control input end, ball mill motor (3) main shaft links by fluid coupling (2-3) and mechanical transmission (2-2) power shaft, and mechanical transmission (2-2) output shaft and ball mill (4) roller shaft link.

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