【简介】

　　Bulk blending fertilizer，Full name is the bulk blending fertilizer, also called mixed fertilizer. It is will have a single fertilizer or several kinds of granular compound fertilizer according to certain proportion mixing and become a kind of compound fertilizer. Its characteristic is the proportion of NPK and trace elements easy to adjust, can according to user needs to produce various specifications of the urea, is fit for the demands of soil fertilizer. Because of its flexible characteristics, under the control of microcomputer, user needs fertilizers can be produced within a few minutes.

　　【关键词：复合肥、BB肥、计算机控制系统、配料、包装、定值】

1.Bulk blending fertilizer

(1) comprehensive nutrient, high concentration, reduce cost significantly to increase production, strong pertinence. Its total nutrients generally over 52%, sales of domestic fertilizer effective components on the market at present is around 25% more, imported compound fertilizer nutrient amount is 45% 48% more, but the import proportion of compound fertilizer nutrients (N, P2O5, K2O = 15:15:15) phosphorus distribution ratio on the high side, nutrient large waste. BB fertilizer nutrient ratio is based on considering the characteristics of crop fertilizer, refer to the local soil nutrient supply, and that both the scientific nature, and targeted.

(2) simple processing, low production cost, no pollution.

(3) flexible formula, can according to the condition such as nutrition, soil fertility and crop yield level of different and flexible change, make up the general universal compound fertilizer for fixed ratio of nutrients and easy to cause some kind of nutrient deficiency or excess of faults. Basic fertilizer and fertilizer, BB fertilizer do because of good solubility, do the appropriate basal, unfavorable had deep soil layer; Fruit, tea, food and so on application of BB fertilizer should not be broadcast, appropriate banding and hole, is apart from the seed and crop root 3 ~ 5 cm, back cover soil, fertilizer, water can be. Mu seems as long as 60% of the compound fertilizer.
 

2.控制系统构成

　Moon and the development of science and technology group is the earliest engaged in tang control equipment research and development production of the manufacturers, composite (BB) fertilizer SM40 batching control system is mainly composed of the computer control system, quantitative batching control of motor speed belt scale, belt conveyor, screw conveyor mixer, elevator, automatic weighing and quantitative packing machine, belt conveyor sealing machine, pump, motor and control system; Including quantitative batching belt scale, SM40 SMC - 2000-2005 belt scale batching controller, SM40-3000 - a packing controller and its scale control system is the sun the flagship product of science and technology. In the fertilizer industry has won praise users.

3.系统操作流程

(1) the raw material preparation, pour into storage hopper. Start the system power supply, start the pump;

(2) according to the target formula, on the computer to set the material formula (ratio), set production (production);

(3) in order to start the hoisting machine, screw conveyor mixing machine, belt conveyor;

(4) on the computer start ingredients;

(5) consecutive discharging, automatic packaging;

(6) the packet, and the finished product.
 

4.功能特点

(1) the types of ingredients. Apply 3 ~ 12 kinds of materials;

(2) high degree of automation. All ingredients, mixing, packaging production process is a computer system control;

(3) the large production capacity. Ingredients of high precision, fast speed, can with 8 ~ 40 tons per hour;

(4) the measurement precision. Can print statements at any time and query the instantaneous ingredients situation accurately, ensure the precision of the ingredients, mixing, packing;

(5). Ground cage stirring, mixing, reliable operation, prevent the stratification in the process of production;

(6) the design is reasonable. For your site separate design, the reasonable, compact structure;

(7) formula is easy to adjust. Computer control, fertilizer formula can change at any time to adjust;

Chain (8) electrical control function to ensure no plugging material, not material;

5. Technical indicators
(1) the system control accuracy: + / - 0.5%

(2) the system measuring accuracy: + / - 0.5%

(3) the accuracy ratio: plus or minus 0.1%

(4) when the output range: 0.1-1000 tons/hour

(5) environmental temperature: - 10 ℃ ~ + 45 ℃

(6) relative humidity: 0-90% RH (no condensation)

(7) power grid voltage: 380 v + 10%, to 220 v + 10%; 5 ohz
 

6.System layout

布局图

现场实景图

7.Software functions is introduced

7.1Compound fertilizer computer automatic batching control system

System functions:

(1) urea production setting function, have real-time read urea instantaneous flow, total quantity, belt speed value;

(2) urinary melting pot temperature real-time measurement, the gas size can according to the tank temperature real-time PID to adjust;

(3) spray flow regulating function, can real time measure the instantaneous flow and cumulative amount, etc.;

(4) the shotcrete start, stop, control functions;

(5) the inlet temperature and furnace temperature; Gas temperature, cooling temperature real-time detection;

(6) dry formula set, production adjustment, production statistics function;

(7) statistics report, data query and print functions;

7.2Automatic microcomputer ingredients compound fertilizer production lines

System functions:

(1) with real-time instantaneous flow, total amount, belt speed reading material values;

(2) belt scale running deviation, skid, flow on the lower limit alarm function;

(3) alarm query, print function;

(4) control system start, stop, control functions;

(5) formula set, production adjustment, production statistics function;

(6) statistics report, data query and print functions;