阅读说明：本技术 全水溶配方高微量元素氮磷钾肥料的生产设备及生产方法 (Production equipment and production method of full-water-soluble formula high-trace-element nitrogen, phosphorus and potassium fertilizer ) 是由 周炜 田绍华 王萍 于 2021-07-28 设计创作，主要内容包括：本发明涉及农用化肥生产技术领域,具体为一种全水溶配方高微量元素氮磷钾肥料的生产设备及生产方法。第三十二加料器把第三十三料仓中的“微量元素和矿腐植的比例混合物”均匀地添加到调浆罐中；“微量元素和矿腐植的比例混合物”中锌、硼、锰、铁、镁、钼和铜元素的含量分别是150PPM(重量),每生产一吨全水溶配方高微量元素氮磷钾肥料使用“微量元素和矿腐植的比例混合物”的量是0.8～1.2公斤,第一三融化液的PH值在4～10范围内。本发明生产设备及生产方法生产的肥料能使农作物的产量显著提高。本发明的有益效果是：使用该生产设备及生产方法生产的肥料能使农作物的产量显著提高。(The invention relates to the technical field of agricultural fertilizer production, in particular to production equipment and a production method of a full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer. A thirty-second feeder uniformly adds the mixture of the trace elements and the ore saprophytic substances in a thirty-third bunker into the slurry mixing tank; the contents of zinc, boron, manganese, iron, magnesium, molybdenum and copper in the mixture of trace elements and mineral corrosion are respectively 150PPM (weight), the amount of the mixture of trace elements and mineral corrosion is 0.8-1.2 kg when one ton of full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer is produced, and the pH value of the first melting solution and the third melting solution is within the range of 4-10. The fertilizer produced by the production equipment and the production method can obviously improve the yield of crops. The invention has the beneficial effects that: the fertilizer produced by the production equipment and the production method can obviously improve the yield of crops.)

1. Production equipment of a full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer comprises a urea tank assembly, a mixing tank assembly, a size mixing tank assembly, an emulsifying machine and a granulator;

the urea tank assembly comprises a urea tank, a fourteenth heater and a fifteenth stirrer; the fourteenth heater and the fifteenth stirrer are respectively arranged in the urea tank;

the mixing tank assembly comprises a mixing tank, a twenty-fourth heater and a twenty-fifth stirrer; the twenty-fourth heater and the twenty-fifth stirrer are respectively arranged in the mixing tank;

the slurry mixing tank assembly comprises a slurry mixing tank, a thirty-fourth heater and a thirty-fifth stirrer; the thirty-fourth heater and the thirty-fifth stirrer are respectively arranged in the slurry mixing tank;

the device is characterized in that the urea tank assembly further comprises a twelfth feeder, a thirteenth bin, a sixteenth feeder and a seventeenth bin; the thirteenth storage bin stores urea, and the twelfth feeder uniformly adds the urea in the thirteenth storage bin into the urea tank; potassium sulfate is stored in the seventeenth bin, and the sixteenth feeder uniformly adds the potassium sulfate in the seventeenth bin into the urea tank; the fourteenth heater heats the urea and the potassium sulfate in the urea tank, and the fifteenth stirrer stirs the urea and the potassium sulfate in the urea tank, so that the urea and the potassium sulfate are uniformly stirred and uniformly heated, and the urea and the potassium sulfate are melted into a first melting liquid; an eighteenth overflow port is also arranged on the wall of the urea tank and is communicated with the mixing tank through a pipeline; the first melting liquid flows into the mixing tank through an eighteenth overflow port;

the mixing tank assembly further comprises a twenty-second feeder and a twenty-third silo; potassium sulfate is stored in a twenty-third storage bin, and a twenty-second feeder uniformly adds the potassium sulfate in the twenty-third storage bin into the mixing tank; the twenty-fourth heater heats the mixture of the potassium sulfate and the first melting liquid in the mixing tank, the twenty-fifth stirrer stirs the mixture of the potassium sulfate and the first melting liquid in the mixing tank, so that the mixture of the potassium sulfate and the first melting liquid is stirred uniformly and heated uniformly, and the mixture of the potassium sulfate and the first melting liquid is melted into a second melting liquid; a twenty-eighth overflow port is also arranged on the wall of the mixing tank and is communicated with the size mixing tank through a pipeline; the second melting liquid flows into the size mixing tank through a twenty-eighth overflow port;

the size mixing tank assembly also comprises a thirty-second feeder, a thirty-third bunker, a thirty-sixth feeder and a thirty-seventh bunker; the thirty-third bunker stores the mixture of the trace elements and the ore saprophytic plants, and the thirty-second feeder uniformly adds the mixture of the trace elements and the ore saprophytic plants in the thirty-third bunker into the slurry mixing tank; storing potassium dihydrogen phosphate in a thirty-seventh bunker, and uniformly adding the potassium dihydrogen phosphate in the thirty-seventh bunker into the slurry mixing tank by a thirty-sixth feeder; a thirty-fourth heater heats a mixture of trace elements and mineral humic substances and a mixture of potassium dihydrogen phosphate and a second melting liquid in the slurry mixing tank, a thirty-fifth stirrer stirs the mixture of trace elements and mineral humic substances and the mixture of potassium dihydrogen phosphate and the second melting liquid in the slurry mixing tank to ensure that the mixture of trace elements and mineral humic substances and the mixture of potassium dihydrogen phosphate and the second melting liquid are stirred uniformly and heated uniformly, and the mixture of trace elements and mineral humic substances, the mixture of potassium dihydrogen phosphate and the second melting liquid is melted into a third melting liquid; a thirty-eighth overflow port is also arranged on the wall of the size mixing tank and is communicated with the feed inlet of the emulsifying machine through a pipeline; the third melted liquid flows into the emulsifying machine through a third eighteen overflow ports.

2. A production method of a full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer is characterized by comprising the following steps:

1) the twelfth feeder uniformly adds the urea in the thirteenth storage bin into the urea tank, wherein the nitrogen content of the urea is 46.4% (by weight), and the amount of the urea used for producing one ton of the full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer is 304-344 kg;

2) the sixteenth feeder uniformly adds the potassium sulfate in the seventeenth storage bin into the urea tank, wherein the potassium content of the potassium sulfate is 52 percent (by weight), and in the step 2), 300-344 kilograms of the potassium sulfate is used when one ton of the full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer is produced;

3) the fourteenth heater heats the urea and the potassium sulfate in the urea tank, and the fifteenth stirrer stirs the urea and the potassium sulfate in the urea tank, so that the urea and the potassium sulfate are uniformly stirred and heated, and the urea and the potassium sulfate are melted into first melting liquid;

4) an eighteenth overflow port is arranged on the wall of the urea tank and is communicated with the mixing tank through a pipeline; the first melting liquid flows into the mixing tank through the eighteenth overflow port;

5) the twenty-second feeder uniformly adds the potassium sulfate in the twenty-third bunker into the mixing tank, wherein the potassium content of the potassium sulfate is 52 percent (weight), and in the step 5), 185.2-204.8 kilograms of potassium sulfate is used for producing one ton of full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer;

6) the twenty-fourth heater heats the mixture of the potassium sulfate and the first melting liquid in the mixing tank, the twenty-fifth stirrer stirs the mixture of the potassium sulfate and the first melting liquid in the mixing tank, so that the mixture of the potassium sulfate and the first melting liquid is stirred uniformly and heated uniformly, and the mixture of the potassium sulfate and the first melting liquid is melted into a first second melting liquid;

7) a twenty-eighth overflow port is also arranged on the wall of the mixing tank and is communicated with the size mixing tank through a pipeline; the first and second melt liquid flows into the size mixing tank through the twenty-eight overflow port;

8) a thirty-second feeder uniformly adds the mixture of the trace elements and the mineral rotten plants in a thirty-third bunker into the slurry mixing tank; the contents of zinc, boron, manganese, iron, magnesium, molybdenum and copper in the mixture of trace elements and mineral corrosion are respectively 150PPM (weight), and the amount of the mixture of trace elements and mineral corrosion is 0.8-1.2 kg when one ton of full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer is produced;

9) a thirty-sixth feeder uniformly adds the potassium dihydrogen phosphate in a thirty-seventh storage bin into the slurry mixing tank, wherein the content of phosphorus pentoxide in the potassium dihydrogen phosphate is 51.5 percent (weight), the content of dipotassium oxide is 34 percent (weight), and the content of potassium dihydrogen phosphate is 150-170 kg when one ton of full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer is produced;

10) a thirty-fourth heater heats a mixture of trace elements and mineral rotting plants and a mixture of potassium dihydrogen phosphate and a first secondary melting liquid in the pulp mixing tank, and a thirty-fifth stirrer stirs the mixture of the trace elements and the mineral rotting plants and the mixture of the potassium dihydrogen phosphate and the first secondary melting liquid in the pulp mixing tank, so that the mixture of the trace elements and the mineral rotting plants, the mixture of the potassium dihydrogen phosphate and the first secondary melting liquid are uniformly stirred and heated to be melted into a first third melting liquid;

11) a thirty-eighth overflow port is also arranged on the wall of the size mixing tank and is communicated with the feed inlet of the emulsifying machine through a pipeline; the first melted liquid and the third melted liquid flow into the emulsifying machine through a third eighteen overflow ports.

3. The method for producing the fully water-soluble high trace element nitrogen phosphorus potassium fertilizer as claimed in claim 2, wherein the temperature of the first melting liquid in the step 3) is 130-136 ℃.

4. The method for producing the fully water-soluble high trace element nitrogen phosphorus potassium fertilizer of claim 2, wherein the temperature of the first secondary melting liquid in the step 6) is 110-116 ℃.

5. The method for producing the fully water-soluble high trace element nitrogen phosphorus potassium fertilizer as claimed in claim 2, wherein the temperature of the first melting liquid in the step 10) is 102-108 ℃.

6. The method for producing a fully water-soluble high trace element N, P and K fertilizer as claimed in claim 2, 3, 4 or 5, wherein in step 8), sodium bicarbonate is added to the mixture of trace elements and mineral humic substances, so that the pH of the first three-phase thawing solution is in the range of 4-10.

7. The method for producing the fully water-soluble high trace element nitrogen phosphorus potassium fertilizer of claim 2, wherein the pH value of the first three melting solutions is in the range of 6-8.

Technical Field

The invention relates to the technical field of agricultural fertilizer production, in particular to production equipment and a production method of a full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer.

Background

The plant growth and development need a large amount of nitrogen, phosphorus and potassium elements, and the elements are generally sufficient in common fertilizers, and the trace elements of zinc, boron, manganese, iron, magnesium, molybdenum and copper are also needed to be prepared. Crops have less trace element requirement, the content of general soil can basically meet the requirement, however, with the planting of high-yield varieties, the trace element deficiency of crops is increasing, for example, rape flower but not fruit caused by boron deficiency of soil, cotton bud but not flower, flower but not boll; the zinc deficiency of soil causes the 'lobular disease' of fruit trees, the 'rice shrinkage of rice', the iron deficiency yellowing disease of oranges and tangerines, and the like. Therefore, the corresponding trace elements are applied to the crops according to the symptoms, and the normal growth of the crops is promoted.

The preparation of trace elements in chemical fertilizers is important, and a bit of important, special equipment is needed, substances containing the elements are compounded together and applied to the field to be well dissolved in water, so that crops can absorb the substances.

Some of the current compound fertilizers have the defect that various elements are complete only in terms of material formula, but the trace element deficiency of crops is not good when the compound fertilizers are applied to fields, namely, the trace elements are not well dissolved and are not absorbed by the crops. How to solve such problems requires the manufacture of special fertilizer manufacturing equipment and the formulation of special process methods.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides production equipment and a production method of a full water-soluble formula high-trace-element nitrogen, phosphorus and potassium fertilizer, and the fertilizer produced by using the production equipment and the production method can obviously improve the yield of crops.

Production equipment of a full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer comprises a urea tank assembly, a mixing tank assembly, a size mixing tank assembly, an emulsifying machine and a granulator;

the urea tank assembly comprises a urea tank, a fourteenth heater and a fifteenth stirrer; the fourteenth heater and the fifteenth stirrer are respectively arranged in the urea tank;

the mixing tank assembly comprises a mixing tank, a twenty-fourth heater and a twenty-fifth stirrer; the twenty-fourth heater and the twenty-fifth stirrer are respectively arranged in the mixing tank;

the slurry mixing tank assembly comprises a slurry mixing tank, a thirty-fourth heater and a thirty-fifth stirrer; the thirty-fourth heater and the thirty-fifth stirrer are respectively arranged in the slurry mixing tank;

the device is characterized in that the urea tank assembly further comprises a twelfth feeder, a thirteenth bin, a sixteenth feeder and a seventeenth bin; the thirteenth storage bin stores urea, and the twelfth feeder uniformly adds the urea in the thirteenth storage bin into the urea tank; potassium sulfate is stored in the seventeenth bin, and the sixteenth feeder uniformly adds the potassium sulfate in the seventeenth bin into the urea tank; the fourteenth heater heats the urea and the potassium sulfate in the urea tank, the fifteenth stirrer stirs the urea and the potassium sulfate in the urea tank, the urea and the potassium sulfate are stirred uniformly and are heated uniformly, and the urea and the potassium sulfate are melted into first melting liquid; an eighteenth overflow port is also arranged on the wall of the urea tank and is communicated with the mixing tank through a pipeline; the first melting liquid flows into the mixing tank through an eighteenth overflow port;

the mixing tank assembly further comprises a twenty-second feeder and a twenty-third silo; potassium sulfate is stored in a twenty-third storage bin, and a twenty-second feeder uniformly adds the potassium sulfate in the twenty-third storage bin into the mixing tank; the twenty-fourth heater heats the mixture of the potassium sulfate and the first melting liquid in the mixing tank, the twenty-fifth stirrer stirs the mixture of the potassium sulfate and the first melting liquid in the mixing tank, the mixture of the potassium sulfate and the first melting liquid is stirred uniformly and heated uniformly, and the mixture of the potassium sulfate and the first melting liquid is melted into a second melting liquid; a twenty-eighth overflow port is also arranged on the wall of the mixing tank and is communicated with the size mixing tank through a pipeline; the second melting liquid flows into the size mixing tank through a twenty-eighth overflow port;

the size mixing tank assembly also comprises a thirty-second feeder, a thirty-third bunker, a thirty-sixth feeder and a thirty-seventh bunker; the proportional mixture of the trace elements and the ore saprophytic plants is stored in a thirty-third bunker, and the proportional mixture of the trace elements and the ore saprophytic plants in the thirty-third bunker is uniformly added into the slurry mixing tank by a thirty-second feeder; storing potassium dihydrogen phosphate in a thirty-seventh bunker, and uniformly adding the potassium dihydrogen phosphate in the thirty-seventh bunker into the slurry mixing tank by a thirty-sixth feeder; a thirty-fourth heater heats a mixture of the trace elements and the ore saprophytic acid and the potassium dihydrogen phosphate and the second melting liquid in the pulp mixing tank, and a thirty-fifth stirrer stirs the mixture of the trace elements and the ore saprophytic acid and the potassium dihydrogen phosphate and the second melting liquid in the pulp mixing tank, so that the mixture of the trace elements and the ore saprophytic acid and the potassium dihydrogen phosphate and the second melting liquid are stirred uniformly and heated uniformly to be melted into a third melting liquid; a thirty-eighth overflow port is also arranged on the wall of the size mixing tank and is communicated with the feed inlet of the emulsifying machine through a pipeline; and the third melted liquid flows into an emulsifying machine through a thirty-eight overflow port for emulsification, and then flows into a granulator from the emulsifying machine for granulation.

A production method of a full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer comprises the following steps:

1) the twelfth feeder uniformly adds the urea in the thirteenth storage bin into the urea tank, wherein the nitrogen content of the urea is 46.4% (by weight), and the amount of the urea used for producing one ton of the full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer is 304-344 kg;

2) the sixteenth feeder uniformly adds the potassium sulfate in the seventeenth storage bin into the urea tank, wherein the potassium content of the potassium sulfate is 52 percent (by weight), and in the step 2), 300-344 kilograms of the potassium sulfate is used when one ton of the full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer is produced;

3) the fourteenth heater heats the urea and the potassium sulfate in the urea tank, the fifteenth stirrer stirs the urea and the potassium sulfate in the urea tank to ensure that the urea and the potassium sulfate are uniformly stirred and are uniformly heated, and the urea and the potassium sulfate are melted into first melting liquid;

4) an eighteenth overflow port is arranged on the wall of the urea tank and is communicated with the mixing tank through a pipeline; the first melting liquid flows into the mixing tank through the eighteenth overflow port;

5) the twenty-second feeder uniformly adds the potassium sulfate in the twenty-third bunker into the mixing tank, wherein the potassium content of the potassium sulfate is 52 percent (weight), and in the step 5), 185.2-204.8 kilograms of potassium sulfate is used for producing one ton of full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer;

6) the twenty-fourth heater heats the mixture of the potassium sulfate and the first melting liquid in the mixing tank, the twenty-fifth stirrer stirs the mixture of the potassium sulfate and the first melting liquid in the mixing tank to uniformly stir the mixture so as to rapidly and uniformly heat the mixture, and the mixture of the potassium sulfate and the first melting liquid is melted into a first second melting liquid;

7) a twenty-eighth overflow port is also arranged on the wall of the mixing tank and is communicated with the size mixing tank through a pipeline; the first and second melt liquid flows into the size mixing tank through the twenty-eight overflow port;

8) a thirty-second feeder uniformly adds the mixture of the trace elements and the ore saprophytic substances in a thirty-third bunker into the slurry mixing tank; the contents of zinc, boron, manganese, iron, magnesium, molybdenum and copper in the proportional mixture of the trace elements and the mine rotting plants are respectively 150PPM (weight), and the amount of the proportional mixture of the trace elements and the mine rotting plants is 0.8-1.2 kg when one ton of full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer is produced;

9) a thirty-sixth feeder uniformly adds the potassium dihydrogen phosphate in a thirty-seventh storage bin into the slurry mixing tank, wherein the content of phosphorus pentoxide in the potassium dihydrogen phosphate is 51.5 percent (weight), the content of dipotassium oxide is 34 percent (weight), and the content of potassium dihydrogen phosphate is 150-170 kg when one ton of full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer is produced;

10) a thirty-fourth heater heats a proportional mixture of the trace elements and the ore humic substances and a mixture of the potassium dihydrogen phosphate and the first second thawing solution in the slurry mixing tank, and a thirty-fifth stirrer stirs the proportional mixture of the trace elements and the ore humic substances and the mixture of the potassium dihydrogen phosphate and the first second thawing solution in the slurry mixing tank to stir the mixture uniformly, so that the mixture is uniformly heated and is melted into a first third thawing solution;

11) a thirty-eighth overflow port is also arranged on the wall of the size mixing tank and is communicated with the feed inlet of the emulsifying machine through a pipeline; the first melted liquid flows into an emulsifying machine through a thirty-eighth overflow port for emulsification;

12) the emulsified materials flow into a granulator through a pipeline for granulation, and the materials are converted into full water-soluble high-trace-element nitrogen-phosphorus-potassium fertilizer particles;

13) the full water-soluble formula high trace element nitrogen phosphorus potassium fertilizer particles are divided into three stages, namely a large stage, a middle stage and a small stage through a grading vibrating screen, wherein the middle stage is a final product;

14) the full water-soluble high-trace-element nitrogen-phosphorus-potassium fertilizer particles enter a water cooling tower to be cooled;

15) feeding the full water-soluble high-trace-element nitrogen-phosphorus-potassium fertilizer particles into a coating cylinder for coating;

16) and packaging and warehousing the fully water-soluble high-trace-element nitrogen-phosphorus-potassium fertilizer particles.

Wherein the temperature of the first melting liquid in the step 3) is 130-136 ℃.

Wherein the temperature of the first and second molten liquid in the step 6) is 110-116 ℃.

Wherein the temperature of the first third thawing solution in the step 10) is 102-108 ℃.

Wherein, in the step 8), sodium bicarbonate is added into the mixture of trace elements and mineral rotting plants, so that the pH value of the first melting liquid is in the range of 4-10, and the preferable pH value is in the range of 6-8.

The above-mentioned "uniformly adding" means that the weight of the materials added per minute is equal, and the unit of the material addition speed is kg/min.

The full-water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer manufactured by the production equipment and the production method has the advantages that humic acid in mine rotting plants and cations of trace elements are subjected to chelation reaction, the effectiveness and the utilization rate of the trace elements in a chelated state can be improved, and fertilizer effect application tests in soybean fields show that 50 kg/mu, 40 kg/mu and 30 kg/mu of the full-water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer manufactured by the production equipment and the production method respectively increase the yield by 15.3 percent, 6.7 percent and 2.2 percent in average compared with 50 kg/mu, 40 kg/mu and 30 kg/mu of common compound fertilizer, and the yield is remarkably improved.

Compared with the prior art, the fertilizer produced by the production equipment and the production method can obviously improve the yield of crops.

Drawings

FIG. 1 is a schematic diagram of the layout of the vertical surfaces and the layout of the pipelines of the equipment according to the embodiment of the invention;

in the figure:

1-a urea tank assembly; 11-a urea tank; 12-a twelfth feeder; 13-a thirteenth silo; 14-a fourteenth heater; 15-a fifteenth agitator; 16-a sixteenth feeder; 17-a seventeenth bin; 18-eighteenth overflow port;

2-a mixing tank assembly; 21-a mixing tank; 22-a twenty-second feeder; 23-a twenty-third bunker; 24-a twenty-fourth heater; 25-a twenty-fifth agitator; 28-twenty-eighth overflow port;

3-a size mixing tank assembly; 31-a size mixing tank; 32-a thirty-second feeder; 33-thirty-third bunker; 34-a thirty-fourth heater; 35-a thirty-fifth agitator; 36-a thirty-sixth feeder; 37-thirty-seventh bunker; 38-thirty-eighth overflow port;

4-an emulsifying machine;

and 5-granulating the mixture.

Detailed Description

The technical solutions in the present invention will be described clearly and completely with reference to the following embodiments and the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: a production device of a full water-soluble formula high-trace-element nitrogen phosphorus potassium fertilizer is shown in figure 1 and comprises a urea tank assembly 1, a mixing tank assembly 2, a size mixing tank assembly 3, an emulsifying machine 4 and a granulator 5;

the urea tank assembly 1 comprises a urea tank 11, a fourteenth heater 14 and a fifteenth stirrer 15; a fourteenth heater 14 and a fifteenth stirrer 15 are respectively provided in the urea tank 11;

the mixing tank assembly 2 comprises a mixing tank 21, a twenty-fourth heater 24 and a twenty-fifth stirrer 25; a twenty-fourth heater 24 and a twenty-fifth stirrer 25 are respectively arranged in the mixing tank 21;

the slurry mixing tank assembly 3 comprises a slurry mixing tank 31, a thirty-fourth heater 34 and a thirty-fifth stirrer 35; a thirty-fourth heater 34 and a thirty-fifth stirrer 35 are respectively arranged in the size mixing tank 31;

the device is characterized in that the urea tank assembly 1 further comprises a twelfth feeder 12, a thirteenth storage bin 13, a sixteenth feeder 16 and a seventeenth storage bin 17; a thirteenth storage bin 13 stores urea, and a twelfth feeder 12 uniformly adds the urea in the thirteenth storage bin 13 to the urea tank 11; potassium sulfate is stored in the seventeenth storage bin 17, and the sixteenth feeder 16 uniformly adds the potassium sulfate in the seventeenth storage bin 17 into the urea tank 11; the fourteenth heater 14 heats the urea and the potassium sulfate in the urea tank 11, and the fifteenth stirrer 15 stirs the urea and the potassium sulfate in the urea tank 11 to rapidly and uniformly heat the urea and the potassium sulfate to melt the urea and the potassium sulfate into a first melting liquid; an eighteenth overflow port 18 is also arranged on the wall of the urea tank 11, and the eighteenth overflow port 18 is communicated with the mixing tank 21 through a pipeline; the first melting liquid flows into the mixing tank 21 through the eighteenth overflow port 18;

the mixing tank assembly 2 further comprises a twenty-second feeder 22 and a twenty-third silo 23; potassium sulfate is stored in the twenty-third storage bin 23, and the twenty-second feeder 22 uniformly adds the potassium sulfate in the twenty-third storage bin 23 into the mixing tank 21; a twenty-fourth heater 24 heats the mixture of the potassium sulfate and the first melting liquid in the mixing tank 21, a twenty-fifth stirrer 25 stirs the mixture of the potassium sulfate and the first melting liquid in the mixing tank 21 to rapidly and uniformly heat the mixture, and the mixture of the potassium sulfate and the first melting liquid is melted into a second melting liquid; a twenty-eighth overflow port 28 is also arranged on the wall of the mixing tank 21, and the twenty-eighth overflow port 28 is communicated with the size mixing tank 31 through a pipeline; the second melting liquid flows into the size mixing tank 31 through the eighteenth overflow port 28;

the size mixing tank assembly 3 further comprises a thirty-second feeder 32, a thirty-third silo 33, a thirty-sixth feeder 36 and a thirty-seventh silo 37; the thirty-third bunker 33 stores the proportional mixture of the trace elements and the mineral rotten plants, and the thirty-second feeder 32 uniformly adds the proportional mixture of the trace elements and the mineral rotten plants in the thirty-third bunker 33 into the slurry mixing tank 31; the thirty-seventh bunker 37 stores potassium dihydrogen phosphate, and the thirty-sixth feeder 36 uniformly adds the potassium dihydrogen phosphate in the thirty-seventh bunker 37 into the size mixing tank 31; a thirty-fourth heater 34 heats the mixture of the trace elements and the ore saprophytic acid and the mixture of the potassium dihydrogen phosphate and the second melting liquid in the pulp mixing tank 31, and a thirty-fifth stirrer 35 stirs the mixture of the trace elements and the ore saprophytic acid and the mixture of the potassium dihydrogen phosphate and the second melting liquid in the pulp mixing tank 31 to rapidly and uniformly heat the mixture and melt the mixture into a third melting liquid; a thirty-eighth overflow port 38 is also arranged on the wall of the size mixing tank 31, and the thirty-eighth overflow port 38 is communicated with the feed inlet of the emulsifying machine 4 through a pipeline; the third melted liquid flows into the emulsifying machine 4 through a third eighteen overflow port 38 for emulsification, and then flows into the granulating machine 5 from the emulsifying machine 4 for granulation.

Example 2: a production method of a full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer comprises the following steps:

1) the twelfth feeder 12 uniformly adds the urea in the thirteenth silo 13 into the urea tank 11, wherein the nitrogen content of the urea is 46.4% (by weight), and the amount of the urea used for producing one ton of the full water-soluble formula high-trace element nitrogen phosphorus potassium fertilizer is 324 kg;

2) the sixteenth feeder 16 uniformly adds the potassium sulfate in the seventeenth storage bin 17 into the urea tank 11, wherein the potassium content of the potassium sulfate is 52 percent (by weight), and in the step 2), the amount of the potassium sulfate is 320 kilograms when one ton of the full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer is produced;

3) the fourteenth heater 14 heats the urea and the potassium sulfate in the urea tank 11, the fifteenth stirrer 15 stirs the urea and the potassium sulfate in the urea tank 11 to rapidly and uniformly heat the urea and the potassium sulfate, and the urea and the potassium sulfate are melted into first melting liquid;

4) an eighteenth overflow port 18 is arranged on the wall of the urea tank 11, and the eighteenth overflow port 18 is communicated with the mixing tank 21 through a pipeline; the first melting liquid flows into the mixing tank 21 through the eighteenth overflow port 18;

5) the twenty-second feeder 22 uniformly adds the potassium sulfate in the twenty-third bunker 23 into the mixing tank 21, wherein the potassium content of the potassium sulfate is 52% (weight), and in the step 5), 195 kg of potassium sulfate is used for producing one ton of full water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer;

6) the twenty-fourth heater 24 heats the mixture of the potassium sulfate and the first melting liquid in the mixing tank 21, the twenty-fifth stirrer 25 stirs the mixture of the potassium sulfate and the first melting liquid in the mixing tank 21 to rapidly and uniformly heat the mixture, and the mixture of the potassium sulfate and the first melting liquid is melted into the first second melting liquid;

7) a twenty-eighth overflow port 28 is also arranged on the wall of the mixing tank 21, and the twenty-eighth overflow port 28 is communicated with the size mixing tank 31 through a pipeline; the first and second melt liquid flows into the size mixing tank 31 through the eighteenth overflow port 28;

8) the thirty-second feeder 32 uniformly adds the 'proportional mixture of trace elements and mineral humic substances' in the thirty-third bunker 33 into the slurry mixing tank 31; the contents of zinc, boron, manganese, iron, magnesium, molybdenum and copper in the proportional mixture of trace elements and mineral humic are respectively 150PPM (weight), and the amount of the proportional mixture of trace elements and mineral humic is 1 kg when each ton of full water-soluble formula high trace element nitrogen phosphorus potassium fertilizer is produced;

9) a thirty-sixth feeder 36 uniformly adds the monopotassium phosphate in a thirty-seventh storage bin 37 into the slurry mixing tank 31, wherein the content of phosphorus pentoxide in the monopotassium phosphate is 51.5 percent (weight), the content of dipotassium oxide is 34 percent (weight), and the content of monopotassium phosphate used for producing one ton of full water-soluble formula high-trace element nitrogen phosphorus potassium fertilizer is 160 kg;

10) a thirty-fourth heater 34 heats the mixture of the trace elements and the ore saprophytic acid in the pulp mixing tank 31 and the mixture of the potassium dihydrogen phosphate and the first second molten liquid, and a thirty-fifth stirrer 35 stirs the mixture of the trace elements and the ore saprophytic acid in the pulp mixing tank 31 and the mixture of the potassium dihydrogen phosphate and the first second molten liquid, so that the mixture is rapidly and uniformly heated and melted into a first third molten liquid;

11) a thirty-eighth overflow port 38 is also arranged on the wall of the size mixing tank 31, and the thirty-eighth overflow port 38 is communicated with the feed inlet of the emulsifying machine 4 through a pipeline; the first third melted liquid flows into the emulsifying machine 4 through a third eighteen overflow port 38 for emulsification;

12) the emulsified materials flow into a granulator 5 through a pipeline for granulation, and the materials are converted into full water-soluble high-trace-element nitrogen-phosphorus-potassium fertilizer particles;

13) the full water-soluble formula high trace element nitrogen phosphorus potassium fertilizer particles are divided into three stages, namely a large stage, a middle stage and a small stage through a grading vibrating screen, wherein the middle stage is a final product;

14) the full water-soluble high-trace-element nitrogen-phosphorus-potassium fertilizer particles enter a water cooling tower to be cooled;

15) feeding the full water-soluble high-trace-element nitrogen-phosphorus-potassium fertilizer particles into a coating cylinder for coating;

16) and packaging and warehousing the fully water-soluble high-trace-element nitrogen-phosphorus-potassium fertilizer particles.

Wherein the first melt solution in step 3) has a temperature of 133 ℃.

Wherein the temperature of the first thaw solution in step 6) is 113 ℃.

Wherein the temperature of the first third molten liquid in the step 10) is 105 ℃.

Wherein, in the step 8), sodium bicarbonate is added into the mixture of trace elements and mineral rotting plants, so that the pH value of the first melting liquid is in the range of 6-8.

The full-water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer manufactured by the production equipment and the production method has the advantages that humic acid in mine rotting plants and cations of trace elements are subjected to chelation reaction, the effectiveness and the utilization rate of the trace elements in a chelated state can be improved, and fertilizer effect application tests in soybean fields show that 50 kg/mu, 40 kg/mu and 30 kg/mu of the full-water-soluble formula high-trace-element nitrogen-phosphorus-potassium fertilizer manufactured by the production equipment and the production method respectively increase the yield by 15.3 percent, 6.7 percent and 2.2 percent in average compared with 50 kg/mu, 40 kg/mu and 30 kg/mu of common compound fertilizer, and the yield is remarkably improved.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.