A compound fertilizer / organic fertilizer production line and production process

Abstract

This invention discloses a compound fertilizer organic fertilizer production line and production process, relating to the field of compound fertilizer production technology. The production line includes, in sequence, a feeding system, a conveying system A, a premixing device, a conveying system B, a mixing and granulation system, a drying and cooling system, and a finished product processing system. The feeding system includes a first feeding device and a second feeding device respectively located at the front and end of the conveying system A. This invention uses the first and second feeding devices, with different feeding precision and speeds, to add raw materials during the compound fertilizer production process. In use, more than 95% of the material is first added through the first feeding device, and then the remaining material is supplemented by the second feeding device. Simultaneously, due to the length of the conveying system, while the first feeding device completes its feeding and the conveying system is conveying, the remaining material is directly added to the conveying system by the second feeding device and transported along with it.

Description

Technical Field

[0001] This invention belongs to the field of compound fertilizer production technology, and in particular relates to a compound fertilizer organic fertilizer production line and a compound fertilizer organic fertilizer production process. Background Technology

[0002] Compound fertilizer is short for blended fertilizer, which is a fertilizer containing various mineral elements or other nutrients needed by plants. Organic-inorganic compound fertilizer contains a certain amount of organic matter; it is made by adding a certain amount of organic matter during the production of inorganic compound fertilizer. This product contains both macronutrients and a certain amount of organic matter. With the popularization of pollution-free agriculture, the demand for organic-inorganic compound fertilizer in agricultural production has risen rapidly, and its production scale has developed rapidly.

[0003] For example, CN210711334U discloses an organic-inorganic compound fertilizer production line, which includes a feeding device, a granulation device, a first drying device, a first cooler, a multi-stage screening device, a second drying device, a second cooler, a drum screen, a coating machine, an automatic packaging scale, and a palletizer connected in sequence; the coating machine is connected to a powder feeder; and CN203999421U discloses a granular compound fertilizer production line, in which the raw materials are sequentially fed by an automatic feeder, a mixing mixer, a raw material crusher, and a granulation disc, and then sequentially enter a drying cylinder, a cooling cylinder, a primary screening machine, a secondary screening machine, and finally sequentially enter a finished product machine, a coating machine, and an electronic packaging machine. All the raw materials disclosed above are fed using a feeding device. Since the vibrating feeder uses vibration, in order to improve the feeding accuracy, the vibrating feeder often uses a feeding process that goes from high frequency vibration to low frequency vibration. More than 95% of the material is added during the high frequency vibration process, and less than 5% of the material is added during the low frequency vibration process. In actual operation, the low frequency vibration usually requires a lot of time to meet the set value, and using a single vibrating feeder can also easily lead to low feeding accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a compound fertilizer organic fertilizer production line and production process. The raw materials for compound fertilizer production are added using a first feeding device and a second feeding device with different feeding precision and speed. In operation, more than 95% of the material is first added through the first feeding device, and then the remaining material is supplemented by the second feeding device. Simultaneously, due to the length of the feeding system, while the first feeding device is completing its feeding and the feeding system is conveying the material, the remaining material is directly added to the feeding system by the second feeding device and transported along with it, thus solving the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a compound fertilizer organic fertilizer production line, comprising a feeding system, a feeding system A, a premixing device, a feeding system B, a mixing and granulation system, a drying and cooling system, and a finished product processing system arranged sequentially. The feeding system includes multiple first feeding devices and multiple second feeding devices respectively arranged at the front and end of the feeding system A. The feeding accuracy of the second feeding devices is 2-20 times that of the first feeding devices, and the feeding speed of the first feeding devices is 2-20 times that of the second feeding devices. Both the feeding system A and the feeding system B are belt conveyors.

[0007] Furthermore, the premixing device includes a tank body with a feed inlet at the top; a conical hopper is located on the inner top side of the tank body at the feed inlet, and a stirring mechanism is located on the tank body directly below the conical hopper; the stirring mechanism includes a rotating shaft located at the bottom of the tank body, a conical plate fixed to the top of the rotating shaft, and several stirring columns on the top of the conical plate; a discharge port is also provided on the bottom side of the tank body, and a scraper is also provided around the rotating shaft; the bottom end of the rotating shaft passes through and extends to the outside of the tank body, and a motor located outside the tank body is drivenly connected to the rotating shaft.

[0008] Furthermore, multiple first feeding devices and multiple second feeding devices are arranged sequentially along the conveying direction of the feeding system A; and a material distribution mechanism is provided at the bottom of each of the first feeding device and the second feeding device; the material distribution mechanism includes a rectangular tube A, and a material distributor with a trapezoidal cross-section and a gradually increasing cross-sectional area from top to bottom is provided at the bottom of the rectangular tube A; multiple material distribution baffles are arranged sequentially inside the material distributor along the conveying direction perpendicular to the feeding system A; the bottom of the material distributor is connected to a rectangular tube B.

[0009] Furthermore, the first feeding device and the second feeding device respectively add granular inorganic nitrogen, phosphorus, and potassium fertilizers and organic granular fertilizers mixed with livestock and poultry manure, soybean cake, and straw.

[0010] Furthermore, the drying and cooling system includes a belt conveyor and a belt cover A covering the outer periphery of the front section of the belt conveyor; the inlet and outlet ends of the belt cover A are respectively provided with multiple air inlets and multiple air outlets, the multiple air outlets converge and connect to an air outlet duct, the multiple air inlets converge and connect to an air inlet duct, the air outlet duct and the air inlet duct are respectively connected to the inlet and outlet of a fan A, a drying device is connected in the middle of the air outlet duct, and humidity sensor A and humidity sensor B are respectively provided on the air outlet ducts located on both sides of the drying device;

[0011] A temperature sensor A is installed on the air outlet duct; a drying lamp is installed on the inner top side of the belt cover A; a shut-off valve is installed on both the air outlet and the inlet / outlet; a controller is also included, which is connected to the shut-off valve, the drying lamp, the temperature sensor A, the humidity sensor A, and the humidity sensor B.

[0012] Furthermore, a belt cover B is provided on the outer periphery of the end of the belt conveyor. The inlet end and outlet end of the belt cover B are respectively connected to an air inlet pipe and an air outlet pipe. The air inlet pipe is connected to a fan B, and the air outlet pipe is connected to an exhaust gas treatment system.

[0013] Furthermore, the mixing and granulation system is an integrated mixing and granulation machine, and the finished product processing system includes a drum screen, a coating machine, an automatic packaging scale, and a palletizer arranged in sequence.

[0014] A process for producing compound organic fertilizer includes the following steps:

[0015] Step 1: Granular urea, monoammonium phosphate, potassium sulfate, and organic granular fertilizer are added to feeding system A through the first feeding device and the second feeding device, respectively.

[0016] Step 2: The material is conveyed to the premixing device through the feeding system A for premixing, and then fed into the mixing and granulation system through the feeding system B for mixing and granulation.

[0017] Step 3: The mixture and granulation process is then fed into a drying and cooling system for drying and cooling.

[0018] Step 4: Finally, the finished product is sent to the finished product processing system for packaging and storage.

[0019] Further, in step 1, the ratio of granular urea, monoammonium phosphate, potassium sulfate, and organic granular fertilizer is 4-6:1-2:1-2:1-2; and the organic granular fertilizer is made from a mixture of livestock and poultry manure, soybean cake, and straw. Also in step 1, the feeding sequence at the front of the feeding system A is granular urea, monoammonium phosphate, potassium sulfate, and organic granular fertilizer, while the feeding sequence at the end of the feeding system A is organic granular fertilizer, potassium sulfate, monoammonium phosphate, and granular urea.

[0020] The present invention has the following beneficial effects:

[0021] This invention uses a first feeding device and a second feeding device with different feeding precision and speed to add raw materials during the production of compound fertilizer. In use, the first feeding device first feeds in more than 95% of the material, and then the second feeding device replenishes the remaining material. At the same time, because the feeding system has a certain length, while the first feeding device has completed feeding and the feeding system is feeding, the second feeding device directly adds the remaining material to the feeding system and transports it along with the feeding system, thus solving the problems mentioned in the background technology.

[0022] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a flowchart of the production line for this invention;

[0025] Figure 2 This is a diagram showing the combined state of the feeding system and the material delivery system A of the present invention;

[0026] Figure 3 This is a schematic diagram of the premixing device of the present invention;

[0027] Figure 4 This is a schematic diagram of the fabric mechanism structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the drying and cooling system of the present invention. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-2As shown, the present invention is a compound fertilizer organic fertilizer production line, comprising a feeding system 1, a feeding system A10, a premixing device 2, a feeding system B20, a mixing and granulation system 3, a drying and cooling system 4, and a finished product processing system 5 arranged sequentially; the feeding system 1 includes four first feeding devices 101 and four second feeding devices 102 respectively arranged at the front and end of the feeding system A10; the feeding accuracy of the second feeding devices 102 is 10 times that of the first feeding devices 101, and the feeding speed of the first feeding devices 101 is 10 times that of the second feeding devices 102; both the feeding system A10 and the feeding system B20 are belt conveyors.

[0031] In the above process, four first feeding devices 101 sequentially add granular urea, monoammonium phosphate, potassium sulfate, and organic granular fertilizer along the conveying direction of the feeding system A10, while four second feeding devices 102 sequentially add organic granular fertilizer, potassium sulfate, monoammonium phosphate, and granular urea along the conveying direction of the feeding system A10. The ratio of granular urea, monoammonium phosphate, potassium sulfate, and organic granular fertilizer in the formula is 5.5:1.5:1.5:1.5. In this process, granular urea, which has a higher specific gravity and is used in larger quantities, is added first at the front of the feeding system A10 to prevent it from impacting the less dense organic granular fertilizer and causing it to splash when added later. Simultaneously, organic granular fertilizer is added first at the end of the feeding system A10, and then granular urea is used to cover the surface of the pile to prevent material splashing when the organic granular fertilizer is at the top of the pile due to wind or shaking during conveying.

[0032] Organic granular fertilizer is made from a mixture of livestock and poultry manure, soybean cake, and straw.

[0033] Furthermore, in the above process, the first feeding device 101 first completes the addition of more than 95% of the raw materials. After the first feeding device 101 completes the feeding, the second feeding device 102 is then started to complete the addition of the remaining raw materials. During the feeding process using the second feeding device 102, the material fed by the second feeding device 102 falls directly above the material layer fed by the first feeding device 101, saving overall production time and improving efficiency; at the same time, it avoids the problem of large feeding errors when using the first feeding device 101.

[0034] In this invention, if the amount of granular urea used in each batch is 120 kg, then 115-117 kg is added through the first feeding device 101. That is to say, when the first feeding device 101 is used for feeding, the feeding is stopped when the amount of material added reaches any value between 115-117 kg. When the amount of material added by the first feeding device 101 is 116.5 kg, then the remaining 3.5 kg of the formula can be added through the second feeding device 102.

[0035] By using two feeding devices with different feeding accuracies and feeding speeds to add the same material, the feeding speed is guaranteed while the feeding accuracy is improved, thereby improving overall production efficiency.

[0036] A process for producing compound organic fertilizer includes the following steps:

[0037] Step 1: Granular urea, monoammonium phosphate, potassium sulfate, and organic granular fertilizer are added to the feeding system A10 through the first feeding device 101 and the second feeding device 102, respectively.

[0038] Step 2: The material is fed to the premixing device 2 via the feeding system A10 for premixing, and then fed into the mixing and granulation system 3 via the feeding system B20 for mixing and granulation.

[0039] Step 3: The mixture and granulation are fed into the drying and cooling system 4 for drying and cooling;

[0040] Step 4: Finally, the finished product is sent to the finished product processing system 5 for packaging and storage.

[0041] It is understandable that in some possible implementations, such as Figure 3 The premixing device 2 includes a tank 20, with a feed inlet 21 at the top of the tank 20; a conical hopper 22 is located on the inner top side of the tank 20 at the feed inlet 21, and a stirring mechanism is located directly below the conical hopper 22 in the tank 20; the stirring mechanism includes a rotating shaft 23 located at the bottom of the tank 20, a conical plate 24 fixed to the top of the rotating shaft 23, a plurality of stirring columns 25 located on the top of the conical plate 24, and a stirring column 25 located around the circumference of the rotating shaft 23 along the bottom side of the tank 20. The sliding scraper 27 pushes the mixture inside the tank 20 to the discharge port 26 located on the bottom side of the tank 20. After being discharged from the discharge port 26, the mixture falls onto the feeding system B20 and is then transported by the feeding system B20 to the mixing and granulation system 3. The mixture is then mixed and granulated in the mixing and granulation system 3, which is also the integrated mixing and granulation machine. After granulation, the mixture is discharged into the drying and cooling system 4, where it is dried and cooled. Finally, it is sent into the finished product processing system 5.

[0042] The finished product processing system 5 includes a drum screen, a coating machine, an automatic packaging scale, and a palletizer arranged in sequence, thereby realizing the screening, coating, packaging, and palletizing of finished fertilizer granules.

[0043] In this invention, the bottom end of the rotating shaft 23 extends through and to the outside of the tank body 20, and the rotating shaft 23 is connected to a motor disposed outside the tank body 20.

[0044] It is understandable that in some possible implementations, such as Figure 4The bottom of the first feeding device 101 and the second feeding device 102 are both provided with a material distribution mechanism. The material distribution mechanism includes a rectangular tube A103. The bottom of the rectangular tube A103 is provided with a material distributor 104 with a trapezoidal cross-section and a gradually increasing cross-sectional area from top to bottom. Multiple material distribution baffles 105 are arranged sequentially inside the material distributor 104 along the conveying direction of the vertical feeding system A10. The bottom of the material distributor 104 is connected to a rectangular tube B106. The material distribution mechanism facilitates the even distribution of the material fed by the first feeding device 101 and the second feeding device 102 onto the conveyor belt of the feeding system A10.

[0045] It is understandable that in some possible implementations, such as Figure 5 The drying and cooling system 4 includes a belt conveyor 40 and a belt cover A41 covering the outer periphery of the front section of the belt conveyor 40. The belt cover A41 has multiple air inlets and outlets at its inlet and outlet ends, respectively. The outlets converge and connect to an outlet duct 410, and the inlets converge and connect to an inlet duct 411. The outlet duct 410 and inlet duct 411 are respectively connected to the inlet and outlet of a fan A. A drying device is connected to the middle of the outlet duct 410. Humidity sensors A and B are respectively installed on the outlet ducts 410 located on both sides of the drying device. A temperature sensor A is installed on the outlet duct 410. The inner top side of the belt cover A41 is... It includes a drying lamp; a shut-off valve is installed at both the air outlet and the inlet / outlet; it also includes a controller connected to the shut-off valve, the drying lamp, temperature sensor A, humidity sensor A, and humidity sensor B; in the above, the moisture content of the airflow entering the air outlet duct 410 after drying is measured by humidity sensors A and B to determine whether drying is complete. At the same time, the difference between humidity sensors A and B is used to determine whether the drying device has lost its drying effect. Temperature sensor A is installed on the air outlet duct 410 to control and adjust the power of the drying lamp; hot airflow is sent in against the material conveying direction and dried at high temperature.

[0046] A belt cover B42 is also provided on the outer periphery of the end of the belt conveyor 40. The inlet end and outlet end of the belt cover B42 are respectively connected to an air inlet pipe 420 and an air outlet pipe 421. The air inlet pipe 420 is connected to a fan B, and the air outlet pipe 421 is connected to the exhaust gas treatment system. The cold air is sent in against the material conveying direction to cool the material.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A compound fertilizer / organic fertilizer production line, characterized in that: It includes a feeding system (1), a feeding system A (10), a premixing device (2), a feeding system B (20), a mixing and granulation system (3), a drying and cooling system (4), and a finished product processing system (5), arranged in sequence. The feeding system (1) includes a plurality of first feeding devices (101) and a plurality of second feeding devices (102) respectively disposed at the front and the end of the feeding system A (10); the feeding accuracy of the second feeding device (102) is 2-20 times that of the first feeding device (101), and the feeding speed of the first feeding device (101) is 2-20 times that of the second feeding device (102); Both the feeding system A (10) and the feeding system B (20) are belt conveyors; In use, more than 95% of the material is first fed through the first feeding device, and then the remaining material is replenished through the second feeding device. At the same time, since the feeding system has a certain length, while the first feeding device has completed feeding and the feeding system is feeding, the remaining material is directly added to the feeding system through the second feeding device and transported along with the feeding system.

2. The compound fertilizer / organic fertilizer production line according to claim 1, characterized in that, The premixing device (2) includes a tank (20), and the top of the tank (20) is provided with a feed inlet (21); A conical hopper (22) is provided on the inner top side of the tank (20) located at the feed inlet (21), and a stirring mechanism is provided on the tank (20) directly below the conical hopper (22); The stirring mechanism includes a rotating shaft (23) located at the bottom of the tank (20), a conical plate (24) fixed to the top of the rotating shaft (23), and a plurality of stirring columns (25) provided on the top of the conical plate (24). The bottom side of the tank (20) is also provided with a discharge port (26), and the circumference of the rotating shaft (23) is also provided with a material scraper (27); The bottom end of the rotating shaft (23) extends through and to the outside of the tank body (20), and the rotating shaft (23) is connected to a motor located outside the tank body (20).

3. The compound fertilizer / organic fertilizer production line according to claim 1, characterized in that, Multiple first feeding devices (101) and multiple second feeding devices (102) are arranged sequentially along the conveying direction of the feeding system A (10); Furthermore, a feeding mechanism is provided at the bottom of both the first feeding device (101) and the second feeding device (102); The fabric feeding mechanism includes a rectangular tube A (103), and a material distributor (104) with a trapezoidal cross-section and an increasing cross-sectional area from top to bottom is provided at the bottom of the rectangular tube A (103). Multiple material distribution baffles (105) are arranged sequentially inside the material distributor (104) along the conveying direction of the vertical feeding system A (10). The bottom end of the material distributor (104) is connected to a rectangular tube B (106).

4. The compound fertilizer / organic fertilizer production line according to claim 3, characterized in that, Multiple first feeding devices (101) and multiple second feeding devices (102) respectively add granular inorganic nitrogen, phosphorus, and potassium fertilizers and organic granular fertilizers mixed with livestock and poultry manure, soybean cake, and straw.

5. A compound fertilizer / organic fertilizer production line according to claim 1, characterized in that, The drying and cooling system (4) includes a belt conveyor (40) and a belt cover A (41) covering the outer periphery of the front section of the belt conveyor (40); The belt cover A (41) has multiple air inlets and multiple air outlets at its inlet and outlet ends, respectively. The multiple air outlets converge and connect to an air outlet duct (410), and the multiple air inlets converge and connect to an air inlet duct (411). The air outlet duct (410) and the air inlet duct (411) are respectively connected to the inlet and outlet of a fan A. A drying device is connected in the middle of the air outlet duct (410), and a humidity sensor A and a humidity sensor B are respectively installed on the air outlet duct (410) on both sides of the drying device. A temperature sensor A is installed on the air outlet duct (410); a drying lamp is installed on the inner top side of the belt cover A (41); and a shut-off valve is installed on the air outlet and the inlet / outlet. It also includes a controller, which is connected to a closed-loop valve, a drying lamp, a temperature sensor A, a humidity sensor A, and a humidity sensor B.

6. A compound fertilizer / organic fertilizer production line according to claim 5, characterized in that, The belt conveyor (40) is also provided with a belt cover B (42) on the outer periphery of the end. The inlet end and outlet end of the belt cover B (42) are respectively connected to an air inlet pipe (420) and an air outlet pipe (421). The air inlet pipe (420) is connected to a fan B, and the air outlet pipe (421) is connected to the exhaust gas treatment system.

7. A compound fertilizer / organic fertilizer production line according to claim 1, characterized in that, The mixing granulation system (3) uses an integrated mixing granulation machine, and the finished product processing system (5) includes a drum screen, a coating machine, an automatic packaging scale and a palletizer arranged in sequence.

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