Concentrated liquid water-soluble fertilizer production device and production method

Abstract

The invention aims to provide a concentrated liquid water-soluble fertilizer production device and method, and the device comprises a fertilizer preparation system which is used for carrying out high-concentration mixing on a solid fertilizer and water to generate a liquid fertilizer; wherein the dust removal feeding station is used for feeding solid fertilizer into the fertilizer preparation system; the powder-liquid mixing machine is used for quickly mixing solid fertilizer and liquid, and fully mixing the fertilizer through a circulating reciprocating powder-liquid dispersing and mixing process; the powder-liquid mixer is circularly connected with the fertilizer liquefying tank through a circulating pipeline and a self-priming pump; the fertilizer liquefying tank is used for shearing and liquefying a solid fertilizer and aqueous solution mixture; and the fertilizer storage system is used for storing the high-concentration liquid fertilizer produced by the fertilizer preparation system in a fertilizer storage tank at a high position and providing the produced liquid fertilizer for a user when needed. According to the invention, macroelement fertilizer, medium trace element fertilizer and organic fertilizer required by crops are dissolved in water at a relatively high concentration to form the high-concentration liquid fertilizer capable of providing nutrient elements for the whole crops.

Description

Technical Field

[0001] The present invention belongs to the technical field of agricultural irrigation, and relates to a device and a production method for producing concentrated liquid water-soluble fertilizers, in particular to a device and a production method for producing fertilizers containing multiple nutrient elements required for the growth of crops. Background Art

[0002] The integration of spraying and micro-irrigation with water and fertilizer is a highly efficient irrigation and fertilization technology that dissolves the fertilizers required for crop growth in water and injects the fertilizer solution into the irrigation pipeline system through a fertilization device, and then irrigates and fertilizes the crops. It has been widely applied worldwide and has played an important role in promoting the improvement of water and fertilizer utilization efficiency and crop yield. At the present stage, in the process of integrating spraying and micro-irrigation with water and fertilizer, it is often necessary to dissolve solid wastes or mix liquid fertilizers with irrigation water in the pipeline, and then apply them to the field through spray nozzles or micro-irrigation emitters. For solid fertilizers, during the fertilization process, it is necessary to pre-dissolve solid chemical fertilizers with good solubility (such as urea, ammonium sulfate, potassium chloride, etc.) into a fertilization bucket or a fertilization tank, and then inject the fertilizer into the irrigation water pipeline with the help of a Venturi fertilizer injector, a fertilizer injection pump or a pressure difference device, and then mix it with the irrigation water and apply it to the field through a spray nozzle or a micro-irrigation emitter. For liquid fertilizers, it is necessary to inject the fertilizer into the pipeline with a Venturi fertilizer injector, a fertilizer injection pump or a pressure difference device, and then mix it with water and apply it to the field.

[0003] The applicant has found the following problems in the prior art:

[0004] 1) For the case of applying solid fertilizers, the following problems exist: ① During the existing fertilization process using solid fertilizers, it is often necessary to manually add bagged chemical fertilizers one by one into a fertilization bucket or a fertilization tank, which requires a large amount of labor and time costs; ② Some of the existing solid fertilizers on the market cannot meet the requirement that the insoluble matter is less than 1%, and they cannot be fully dissolved in the fertilization bucket or the fertilization tank, resulting in solid fertilizers entering the pipeline with water, increasing the risk of blockage of the pipeline, spray nozzles and emitters; ③ In the prior art, a relatively large fertilization bucket and fertilization tank are often required during the fertilization process to meet the requirement of complete dissolution of fertilizers on a fixed plot area, resulting in an increase in the volume and cost of the fertilization system; ④ Chemical reactions may occur among various solid fertilizers required by crops after being dissolved in water, resulting in precipitation, and thus it is necessary to apply various chemical fertilizers one by one.

[0005] 2) For the case of using liquid fertilizers, the following problems exist: Existing liquid fertilizers are mostly solutions made by dissolving one or more of soluble macronutrient, micronutrient and trace element fertilizers in water. Limited by the solubility of the fertilizers, the concentration of existing liquid fertilizers in the market is generally low, resulting in a large volume of liquid fertilizers required for irrigation and fertilization, high transportation costs, and it is not suitable for large-scale promotion.

[0006] 3) The existing application methods of solid fertilizers and liquid fertilizers do not consider how to apply organic fertilizers (such as mineral-source humic acid, amino acids, water-soluble carbohydrates, etc.) required by crops. A large number of studies have been conducted on the improvement effects of organic fertilizers on soil improvement, nutrient absorption, and crop growth. However, since most organic fertilizers are in powder form, a large amount of dust will be generated when added to a fertilizer tank or barrel, affecting the health of operators; and when they enter the water, precipitation will occur quickly, causing blockage of the irrigation system. As a result, organic fertilizers are mostly applied to the soil as basal fertilizers, and their effectiveness is greatly reduced.

[0007] Therefore, in the field of agricultural irrigation technology, there is an urgent need for a production device and method for mixing macronutrient fertilizers, medium and micronutrient fertilizers, and organic fertilizers required by crops to produce soluble and highly concentrated water-soluble fertilizers, so as to solve the problems existing in the existing solid fertilizers and liquid fertilizers in the integrated technology of micro-sprinkler irrigation and fertilization, and further exert the effects of the integrated technology of micro-sprinkler irrigation and fertilization in water conservation, fertilizer reduction, salt inhibition, and yield increase. Summary of the Invention

[0008] In view of the above problems, the object of the present invention is to provide a production device and method for concentrated liquid water-soluble fertilizers, so that the macronutrient fertilizers, medium and micronutrient fertilizers, and organic fertilizers required by crops are dissolved in water at a relatively high concentration to form a highly concentrated liquid fertilizer that can provide all the nutrient elements required by crops, reduce the labor demand during the application of solid fertilizers, increase the nutrient concentration of traditional liquid fertilizers, and at the same time mix the organic fertilizers that are not easily soluble in water into the liquid fertilizer to improve the application effect of the integrated technology of micro-sprinkler irrigation and fertilization.

[0009] To achieve the above object, the technical solution adopted by the present invention is:

[0010] The production device for concentrated liquid water-soluble fertilizers includes two parts: a fertilizer mixing system and a fertilizer storage system.

[0011] The fertilizer mixing system is mainly used for highly mixing solid fertilizers (including common macronutrient fertilizers, medium and micronutrient fertilizers, and organic fertilizers) with water to generate liquid fertilizers. The device includes five parts: a dust-removing feeding station, a powder-liquid mixer, a self-priming pump, a fertilizer liquefaction tank, and a circulation pipeline connecting each part.

[0012] The dust removal feeding station is mainly used to feed solid fertilizers into the fertilizer mixing system while ensuring that there is no solid particle dust during the feeding process. The dust removal feeding station consists of a feeding port on the side, a dust suction fan on the top, a filtering device, a first driving motor, and a discharge port at the bottom. During the fertilizer mixing process, solid materials are fed into the fertilizer mixing system through the feeding port manually or by means of a solid material feeding device. The first driving motor drives the dust suction fan to keep the inside of the feeding port and the feeding station in a negative pressure state. After passing through the filtering device, the fertilizer dust is adsorbed in the filter element on the filtering device, and other solid fertilizers enter the discharge port under the action of gravity. The dust suction fan is equipped with a pulse device, which generates a negative pressure suction force during normal operation. After working for a period of time, the dust suction fan rotates in the reverse direction to generate a blowing force, and the dust can fall back into the discharge port again to ensure that the raw materials will not be lost.

[0013] The powder-liquid mixer is mainly used to quickly mix solid fertilizers and liquids, and achieve sufficient mixing of fertilizers through a cyclic powder-liquid dispersion and mixing process. The powder-liquid mixer includes a powder inlet, a mixture inlet, a mixture outlet, a working chamber, and a second driving motor. The powder inlet of the powder-liquid mixer is connected to the discharge port of the dust removal feeding station; the mixture inlet is connected to the fertilizer liquefaction tank through a pipeline; the mixture outlet is connected to a self-priming pump. In the normal working state, under the action of the second driving motor, a strong suction force is generated in the working chamber to suck the solid fertilizers from the discharge port of the dust removal feeding station and the liquids from the fertilizer liquefaction tank body into the working chamber, and a rapid rotation is generated to achieve dispersion and mixing, and then flow out from the mixture outlet.

[0014] The self-priming pump has self-priming ability, which can make the fertilizer solution in the first pipeline of the fertilizer mixing system circulate in the system to increase the compatibility of solid fertilizers and liquids.

[0015] The fertilizer liquefaction tank is mainly used to shear and liquefy the mixture of solid fertilizer and aqueous solution input through the pipeline into a highly concentrated liquid fertilizer in a small molecule state. The fertilizer liquefaction tank consists of six parts: a tank body, a third driving motor, a shear liquefier, a tank cover, a liquid level gauge, and a tank support structure. The tank cover is connected to the mixture outlet of the powder-liquid mixer through a pipeline to receive the mixture of solid fertilizer and water. The liquid level gauge is installed on the side of the tank body, mainly used to observe the depth of the liquid fertilizer mixture in the tank. The lower end of the tank body is in an arc-shaped funnel shape and has a small opening, which is connected to the mixture inlet of the powder-liquid mixer through a pipeline. The shear liquefier includes a shear liquefaction head, a central shaft, and a support rod. The shear liquefaction head consists of a stator and a rotor. The rotor is connected to the third driving motor through the central shaft; the rotor has blades and can drive the fertilizer mixture liquid to rotate at high speed under the drive of the third driving motor; there is a gap between the stator and the rotor, and the width of the gap is 0.2 - 1 mm. The fertilizer mixture liquid can collide violently with the stator under the drive of the rotor, and shear occurs, which can process the material to the micron level; a negative pressure vortex can be formed in the rotor of the shear head during operation to continuously suck the lower material into the rotor cavity; there are small holes on the stator, and under the action of centrifugal force, the material is thrown out of this negative pressure vortex, and the material is mixed more evenly, avoiding sedimentation of the finished product.

[0016] There is a certain gap between the tank cover and the tank body for adding some liquid nutrient fertilizers to be added. The tank support structure is used to support the tank body structure.

[0017] The fertilizer storage system is mainly used to store the highly concentrated liquid fertilizer produced by the fertilizer mixing system in a fertilizer storage tank at a high place and provide the produced liquid fertilizer to users when needed. The fertilizer storage system mainly includes five parts: a fertilizer storage tank, an operation platform, a maintenance staircase, a fertilizer discharging pump, connecting pipelines, and valves.

[0018] The fertilizer storage tank is mainly used to store the fertilizer produced by the fertilizer mixing system. To ensure that the fertilizer solution can be stored in the production workshop for a short time after production, the volume of the fertilizer storage tank is selected with reference to the volume of the tank body of the fertilizer mixing system, and the number should be more than 3 according to the size of the workshop. The fertilizer storage tank is connected to the fertilizer mixing system through a connecting pipeline and placed on the operation platform to reduce the floor area of the production device. One of the fertilizer storage tanks is connected to the fertilizer liquefaction tank of the fertilizer mixing system through a pipeline and can be filled with water to supply water to the fertilizer liquefaction tank of the fertilizer mixing system for making liquid fertilizer.

[0019] The operation platform is made of metal or other building materials and is mainly used to place the fertilizer storage tank.

[0020] The maintenance staircase is connected to the operation platform and the ground and is mainly used for personnel to go back and forth between the operation platform and the ground for relevant operations.

[0021] The connecting pipeline is mainly used to connect the fertilizer mixing system and the fertilizer storage system. A valve is provided on the connecting pipeline to control the fertilizer storage process and fertilizer discharging process of a single or multiple fertilizer storage tanks.

[0022] The fertilizer discharging pump is located under the operating platform of the fertilizer storage system, with one end connected to the fertilizer storage tank and the other end connected to the fertilizer discharging port, and is used to quickly discharge the highly concentrated liquid fertilizer in the fertilizer storage tank into the external fertilizer transportation container.

[0023] A method for producing concentrated liquid water-soluble fertilizer includes the following steps:

[0024] a) Fill the fertilizer storage tank on the operating platform with clear water, use the gravity to discharge water into the fertilizer liquefaction tank, and observe the reading of the liquid level gauge in real time. When the liquid level in the tank reaches 1 / 3 of the tank body, stop the water supply;

[0025] b) Turn on the power switch of the fertilizer mixing system. The dust removal feeding station, self-priming pump, powder-liquid mixer, and shear liquefier in the system start working simultaneously, and the clear water starts to circulate in the fertilizer liquefaction tank, powder-liquid mixer, and circulation pipeline of the fertilizer mixing system;

[0026] c) Put solid fertilizers such as urea, monoammonium phosphate, and potassium sulfate from the dust removal feeding station, and the types and quantities of the fertilizers put are set according to the preset nitrogen, phosphorus, and potassium ratios of the target fertilizer;

[0027] d) Put organic materials such as mineral source humic acid from the dust removal feeding station, and the types and quantities of the fertilizers put are set according to the preset organic fertilizer ratio of the target fertilizer;

[0028] e) Put liquid or less used solid materials such as water-soluble carbohydrates, water-soluble amino acid concentrates, and medium and trace element sets from the reserved tank opening above the fertilizer liquefaction tank, and the types and quantities of the fertilizers put are set according to the corresponding material or element ratios in the preset target fertilizer;

[0029] f) Put defoaming agent from the reserved tank opening above the fertilizer liquefaction tank, and the defoaming agent is put at 1‰ of the total weight of the solid and liquid materials of the fertilizer produced in that batch.

[0030] g) After the material feeding is completed, continue to maintain the system working for 4 hours to ensure that all materials are sheared by the shear liquefier for more than two times.

[0031] h) After the fertilizer mixing system finishes working, close the valve of the circulation pipeline in the fertilizer mixing system, open the valve of the connecting pipeline between the fertilizer mixing system and the fertilizer storage system, and pump the produced fertilizer into the fertilizer storage tank;

[0032] i) When using the fertilizer, turn on the fertilizer discharging pump in the fertilizer storage system to quickly suck the fertilizer into the external fertilizer transportation container.

[0033] The beneficial effects of the present invention are as follows:

[0034] 1) The high-concentration liquid fertilizer production device provided by the present invention can be used to produce liquid fertilizers integrating various nutrient elements. Compared with the traditional application of solid fertilizers, it significantly reduces the labor and time costs of dissolving and injecting solid fertilizers.

[0035] 2) The device provided by the present invention can generate multi-nutrient liquid fertilizers with small molecules, easy absorption, and high solubility by shear liquefaction of conventional chemical fertilizers, medium and trace element fertilizers, organic materials, etc., solving the problem that organic materials are likely to block pipelines, nozzles or irrigation devices when added to the fertilization system.

[0036] 3) The high-concentration liquid fertilizer production device provided by the present invention can produce high-concentration liquid fertilizers with a water content of only about 30%, increasing the amount of fertilizer in the liquid fertilizer per unit volume. Compared with traditional liquid fertilizers, the volume and weight of fertilizers required per unit area are significantly reduced, greatly reducing the transportation cost.

[0037] 4) When the production device involved in the present invention is used for fertilizer feeding, it is fed through a dust-free feeding station, avoiding the generation of soot during the feeding of chemical fertilizers or organic materials and affecting the health of operators; the fertilizer feeding station can also make full use of fertilizer dust through reverse blowing by a fan, improving the fertilizer utilization rate.

[0038] 5) The high-concentration liquid fertilizer production device involved in the present invention integrates the fertilizer mixing system and the fertilizer storage system, and places the fertilizer storage system on the operating platform, greatly saving the space occupied by the equipment.

[0039] 6) The present invention stipulates the main structural parameters and operating parameters of the production device, which can maximize the economy of the production device. Brief Description of the Drawings

[0040] Figure 1 is a schematic diagram of the concentrated liquid water-soluble fertilizer production device of the present invention;

[0041] Figure 2 is a schematic diagram of the fertilizer mixing system of the present invention;

[0042] Figure 3 is a schematic diagram of the powder-liquid mixer device;

[0043] Figure 4 is a schematic diagram of the shear liquefier device of the fertilizer mixing system;

[0044] Figure 5 is a schematic diagram of the fertilizer storage system of the present invention. Detailed Embodiments

[0045] The present invention will be further described below with reference to the drawings and specific embodiments, but it is not limited to the present invention.

[0046] As Figure 1As shown, the present invention relates to a concentrated liquid water-soluble fertilizer production device, which includes a fertilizer preparation system 1 and a fertilizer storage system 2.

[0047] like Figure 2 and Figure 3 As shown, the fertilizer system 1 is mainly used to mix solid fertilizers (including common macronutrient fertilizers, medium and trace element fertilizers and organic fertilizers) with water at high concentration to generate liquid fertilizers. The device includes five parts: a dust removal feeding station 101, a powder-liquid mixer 102, a self-priming pump 103, a fertilizer liquefaction tank 104 and a circulation pipeline 105 connecting the various parts.

[0048] like Figure 2 and Figure 3 As shown, the dust removal feeding station 101 is mainly used to feed solid fertilizers into the fertilizer distribution system, while ensuring that there is no solid particle dust during the feeding process. The dust removal feeding station 101 includes a feeding port 1011 on the side, a dust suction fan 1012 on the top, a filter device 1013, a first drive motor 1014, and a discharge port 1015 at the bottom. During the fertilizer distribution process, solid materials are added to the fertilizer distribution system 1 through the feeding port 1011 manually or with a solid material filling device. The first drive motor 1014 drives the dust suction fan 1012 to put the feeding port 1011 and the feeding station 101 in a negative pressure state. After passing through the filter device 1013, the fertilizer dust is adsorbed in the filter element on the filter device 1013, and other solid fertilizers enter the discharge port 1015 under the action of gravity. The dust suction fan 1012 has a built-in pulse device, which generates negative pressure suction during normal operation; after working for a period of time, the dust suction fan 1012 rotates in the opposite direction to generate a blowing force, and the dust can fall back into the discharge port 1015, ensuring that the raw materials will not be lost.

[0049] like Figure 2 and Figure 3 As shown, the powder-liquid mixer 102 is mainly used to quickly mix solid fertilizer and liquid, and to achieve full mixing of fertilizer through a cyclic reciprocating powder-liquid dispersion and mixing process. The powder-liquid mixer 102 includes a powder inlet 1021, a mixture inlet 1022, a mixture outlet 1023, a working chamber 1024, and a second drive motor 1025. The powder inlet 1021 of the powder-liquid mixer is connected to the discharge port 1015 of the dust removal feeding station 101; the mixture inlet 1022 is connected to the fertilizer liquefaction tank 104 through a circulation pipeline 105; and the mixture outlet 1023 is connected to the self-priming pump 103. In normal working state, under the action of the second drive motor 1025, a strong suction force will be generated in the working chamber 1024, and the solid fertilizer from the discharge port 1015 of the dust removal and feeding station 101 and the liquid from the fertilizer liquefaction tank 104 will be sucked into the working chamber, and rapid rotation will be generated to achieve dispersion and mixing, and then flow out from the mixture outlet 1023.

[0050] The self-priming pump 103 has self-priming ability, which can enable the fertilizer solution in the circulation pipeline 105 of the fertilizer distribution system to circulate in the system, increasing the compatibility between solid fertilizers and liquids.

[0051] As Figure 2 , the fertilizer liquefaction tank 104 is mainly used to shear and liquefy the mixture of solid fertilizer and aqueous solution input from the circulation pipeline 105 into a highly concentrated liquid fertilizer in a small molecule state. The fertilizer liquefaction tank 104 includes six parts: a tank body 1041, a third drive motor 1042, a shear liquefier 1043, a tank cover 1044, a liquid level gauge 1045, and a tank support structure 1046. The lower end of the tank body 1041 is in an arc-shaped funnel shape and has a small opening, which is connected to the mixture inlet 1022 of the powder-liquid mixer 102 through a pipeline. The tank cover 1044 is connected to the mixture outlet 1023 of the powder-liquid mixer 102 through a pipeline to receive the mixture of solid fertilizer and water. The liquid level gauge 1045 is installed on the side of the tank body 1041, mainly used to observe the depth of the liquid fertilizer mixture in the tank body 1041.

[0052] As Figure 4 , the shear liquefier 1043 includes a shear liquefaction head 1043-1, a central shaft 1043-2, and a support rod 1043-3. The shear liquefaction head 1043-1 includes two parts: a stator 1043-1-1 and a rotor 1043-1-2. The rotor 1043-1-2 is connected to the third drive motor 1042 through the central shaft 1043-2; the rotor 1043-1-2 has blades and can drive the fertilizer mixture liquid to rotate at high speed under the drive of the third drive motor 1042; there is a gap between the stator 1043-1-1 and the rotor 1043-1-2, and the gap width is 0.2 - 1 mm. The fertilizer mixture liquid can collide violently with the stator 1043-1-1 under the drive of the rotor 1043-1-2, and shear can be carried out to process the material to the micron level; a negative pressure vortex can be formed during the operation of the rotor 1043-1-2 to continuously suck the lower material into the rotor cavity; small holes are provided on the stator 1043-1-1, and under the action of centrifugal force, the material is thrown out of this negative pressure vortex, and the material mixture is more uniform, avoiding sedimentation of the finished product. There is a certain gap between the tank cover 1044 and the tank body 1041 for putting in some liquid nutrient fertilizers to be added. The tank support structure 1046 is used to support the tank body structure.

[0053] Since the fertilizer distribution system described in the present invention is designed according to the principle of nearby production and nearby use, the volume (V 罐 , m 3 ) of the tank body 1041 can be calculated according to the crop area and fertilizer requirement controlled by the liquid fertilizer production device plan:

[0054]

[0055] Where: A is the planned control area of ​​the liquid water-soluble fertilizer production unit, hm 2 ; F is the fertilizer requirement per unit area of ​​farmland in a single fertilization cycle, kg / hm 2 ; T is the duration of a single fertilization cycle, d; t1 is the daily working time of the water-soluble fertilizer production device, h; t2 is the time consumed for a single batch of fertilizer production, h.

[0056] In this embodiment, the planned control area A of the liquid water-soluble fertilizer production device is 500 hm 2 ; The fertilizer requirement per unit area of ​​farmland in a single fertilization cycle is 100 kg / hm 2 ; The duration of a single fertilization cycle T is 15 days; the daily working time t1 of the water-soluble fertilizer production device is 20 hours; the consumption time t2 for single batch fertilizer production is 5 hours. Calculate V 罐 33.3m 3 .

[0057] In order to ensure that the fertilizer liquefaction tank occupies a small area and ensure that its structure is relatively stable, the tank height (h, m) is set to 1.5 times the diameter (d, m). The diameter of the fertilizer liquefaction tank can be calculated according to the following formula:

[0058]

[0059] According to calculation, the diameter of the fertilizer liquefaction tank is 3.05m and the height is 4.57m.

[0060] In order to ensure that the macronutrient fertilizer, medium and trace element fertilizer and organic fertilizer are fully mixed with the aqueous solution, it is necessary to ensure that 1 / 2 of all fertilizers per unit time are sheared and liquefied. The processing capacity of the shear liquefier 1043 in the fertilizer liquefaction tank 104 (the flow rate thrown out through the stator small hole after being disturbed by the rotor blades per unit time, Q 剪 , m 3 / h) is calculated according to the following formula. After the processing capacity of the shear liquefier is determined, the specifications of the shear liquefier head and the model of the drive motor can be adapted accordingly. In this embodiment, a motor with a speed of 1400 rpm and a power of 55kwa is selected.

[0061] Q 剪 =V 罐 / twenty three)

[0062] After calculation, the processing capacity Q of the shear liquefier 1043 in this embodiment is 剪 16.7m 3 / h.

[0063] In order to ensure the rapid mixing of solid fertilizer and liquid, the fertilizer is circulated in the production device through the self-priming pump 103 during the fertilizer production process. It is required that the fertilizer mixture circulates in the system more than twice per unit time. The rated flow rate (Q剪 , m 3 / h) is calculated according to the following formula. The rated head of the self-priming pump 103 should be more than twice the height of the fertilizer liquefaction tank 104 to ensure that the fertilizer solution can circulate in the system. After the rated flow and rated head of the self-priming pump 103 are determined, select the self-priming pump according to the self-priming pump models on the market.

[0064] Q 泵 = 2V 罐 (4)

[0065] After calculation, the rated flow of the self-priming pump 103 in this embodiment is Q 剪 is 66.7 m 3 / h.

[0066] To ensure the normal operation of the system, the flow rate of the powder-liquid mixer 102 is set to be the same as the rated flow rate of the self-priming pump 103. After the flow rate of the powder-liquid mixer is selected, select its model and power according to the common powder mixing machines on the market.

[0067] The inner diameter of the circulation pipeline 105 connecting each part in the fertilizer distribution system 1 needs to be matched with the production capacity of the fertilizer distribution system. Calculated according to the economic flow velocity (V 经 ) of 1.5 m / s in the pipeline, the economic inner diameter (D, mm) of the circulation pipeline 105 is calculated according to the following formula.

[0068]

[0069] After calculation, the economic inner diameter of the circulation pipeline 105 in this embodiment is 125.4 mm.

[0070] As Figure 5 shown, the fertilizer storage system 2 is mainly used to store the highly concentrated liquid fertilizer produced by the fertilizer distribution system in the fertilizer storage tank at a high place and provide the liquid fertilizer that has been produced to users when needed. The fertilizer storage system mainly includes five parts: a fertilizer storage tank 201, an operation platform 202, a maintenance staircase 203, a fertilizer discharge pump 204, and a connecting pipeline 205.

[0071] The fertilizer storage tank 201 is mainly used to store the fertilizer produced by the fertilizer distribution system. To ensure that the fertilizer solution can be stored in the production workshop for a short time after production, the volume of the fertilizer storage tank 201 is selected with reference to the volume of the tank body of the fertilizer distribution system, and the number should be set to more than 3 according to the size of the workshop. The fertilizer storage tank 201 is connected to the fertilizer distribution system through the connecting pipeline 205 and placed on the operation platform 202 to reduce the floor area of the production device. One of the fertilizer storage tanks 201 is connected to the fertilizer liquefaction tank 104 of the fertilizer distribution system 1 through a pipeline, and can supply water to the fertilizer liquefaction tank 104 of the fertilizer distribution system after filling with water for making liquid fertilizer.

[0072] The operation platform 202 is made of metal or other building materials and is mainly used to place the fertilizer storage tank 201.

[0073] The maintenance staircase 203 is connected to the operation platform 202 and the ground, and is mainly used for personnel to go back and forth between the operation platform and the ground for relevant operations.

[0074] The connecting pipeline 205 is mainly used to connect the fertilizer mixing system 1 and the fertilizer storage system 2. Valves are provided on the connecting pipeline 205 to control the fertilizer storage process and fertilizer discharging process of a single or multiple fertilizer storage tanks 201.

[0075] The fertilizer discharging pump 204 is located below the operation platform of the fertilizer storage system 202, with one end connected to the fertilizer storage tank 201 and the other end connected to the fertilizer discharging port, and is used to quickly discharge the highly concentrated liquid fertilizer in the fertilizer storage tank 201 into the external fertilizer transportation container.

[0076] A method for producing concentrated liquid water-soluble fertilizer, comprising the following steps:

[0077] a) Fill the fertilizer storage tank 201 on the operation platform 202 with clear water, use the gravity to discharge water into the fertilizer liquefaction tank 104, and observe the reading of the liquid level gauge 105 in real time. When the liquid level in the tank 104 reaches 1 / 3 of the tank body, stop the water supply;

[0078] b) Turn on the power switch of the fertilizer mixing system. The dust removal feeding station 101, the self-priming pump 103, the powder-liquid mixer 102, and the shear liquefier 1042 in the system start working simultaneously, and the clear water starts to circulate in the fertilizer liquefaction tank 104, the powder-liquid mixer 102, and the circulation pipeline 105 of the fertilizer mixing system;

[0079] c) Put solid fertilizers such as urea, monoammonium phosphate, and potassium sulfate from the dust removal feeding station 101, and the types and quantities of the fertilizers put are set according to the preset nitrogen, phosphorus, and potassium ratios of the target fertilizer;

[0080] d) Put organic materials such as mineral source humic acid from the dust removal feeding station 101, and the types and quantities of the fertilizers put are set according to the preset organic fertilizer ratio of the target fertilizer;

[0081] e) Put liquid or less used solid materials such as water-soluble carbohydrates, water-soluble amino acid concentrates, and medium and trace element sets from the reserved tank opening above the fertilizer liquefaction tank 104, and the types and quantities of the fertilizers put are set according to the corresponding material or element ratios in the preset target fertilizer;

[0082] f) Put defoaming agents from the reserved tank opening above the fertilizer liquefaction tank 104, and the defoaming agents are put at 1‰ of the total weight of the solid and liquid materials of the fertilizer produced in that batch.

[0083] g) After the material feeding is completed, continue to maintain the system working for 4 hours to ensure that all materials are sheared by the shear liquefier for more than two times.

[0084] h) After the fertilizer mixing system finishes working, close the valve of the 1st circulation pipeline 105 in the fertilizer mixing system, open the valve of the 205 pipeline connecting the fertilizer mixing system 1 and the fertilizer storage system 2, and pump the produced fertilizer into the fertilizer storage tank;

[0085] i) When using the fertilizer, turn on the fertilizer discharging pump in the fertilizer storage system 2 to quickly suck the fertilizer into the external fertilizer transportation container.

Claims

1. A concentrated liquid water-soluble fertilizer production device, characterized in that: It comprises a fertilizer distribution system (1) and a fertilizer storage system (2); The fertilizer mixing system (1) is used to mix solid fertilizer and water at a high concentration to generate liquid fertilizer; it comprises a dust removal feeding station (101), a powder-liquid mixer (102), a self-priming pump (103), and a fertilizer liquefaction tank (104); The dust removal and feeding station (101) is used to feed solid fertilizer into the fertilizer distribution system, while ensuring that there is no solid particle dust during the feeding process; The powder-liquid mixer (102) is used to quickly mix solid fertilizer and liquid, and achieves full mixing of the fertilizer through a cyclic reciprocating powder-liquid dispersion mixing process; the powder-liquid mixer (102) is cyclically connected to the fertilizer liquefaction tank (104) through a circulation pipeline (105) and a self-priming pump (103); the self-priming pump (103) has a self-priming ability, so that the fertilizer solution in the circulation pipeline (105) can be circulated in the system, thereby increasing the compatibility of the solid fertilizer and the liquid; The fertilizer liquefaction tank (104) is used to shear and liquefy the mixture of solid fertilizer and aqueous solution input from the circulation pipeline (105) to convert it into a highly concentrated liquid fertilizer in a small molecule state; The fertilizer storage system (2) is used to store the highly concentrated liquid fertilizer produced by the fertilizer mixing system in a fertilizer storage tank at a high location, and to provide the user with the produced liquid fertilizer when needed.

2. The concentrated liquid water-soluble fertilizer production device according to claim 1, characterized in that: The dust removal feeding station (101) comprises a feeding port (1011) on the side, a dust suction fan (1012) on the top, a filtering device (1013), a first driving motor (1014), and a discharge port (1015) at the bottom; during the fertilizer mixing process, solid materials are added to the fertilizer mixing system (1) through the feeding port (1011) manually or with a solid material filling device; the first driving motor (1014) drives the dust suction fan (1012) to make the feeding port (1 011) and the feeding station (101) are in a negative pressure state. After passing through the filtering device (1013), the fertilizer dust is adsorbed in the filter element on the filtering device (1013), and other solid fertilizers enter the discharge port (1015) under the action of gravity. The dust suction fan (1012) has a built-in pulse device, which generates negative pressure suction during normal operation. After working for a period of time, the dust suction fan (1012) rotates in the opposite direction to generate a blowing force, so that the dust can fall back into the discharge port (1015).

3. The concentrated liquid water-soluble fertilizer production device according to claim 1, characterized in that: The powder-liquid mixer (102) comprises a powder inlet (1021), a mixture inlet (1022), a mixture outlet (1023), a working chamber (1024), and a second drive motor (1025); the powder inlet (1021) of the powder-liquid mixer is connected to the discharge port (1015) of the dust removal and feeding station (101); the mixture inlet (1022) is connected to the fertilizer liquefaction tank (104) through a pipeline; the mixture outlet (1023) is connected to the self-priming pump (103); in a normal working state, under the action of the second drive motor (1025), a strong suction force is generated in the working chamber (1024), solid fertilizer from the discharge port (1015) of the dust removal and feeding station (101) and liquid from the fertilizer liquefaction tank (104) are sucked into the working chamber, and rapid rotation is generated to achieve dispersion and mixing, and then they flow out from the mixture outlet (1023).

4. The concentrated liquid water-soluble fertilizer production device according to claim 3 is characterized in that: The fertilizer liquefaction tank (104) comprises a tank body (1041), a third drive motor (1042), a shear liquefier (1043), a tank body cover (1044), a liquid level meter (1045), and a tank body support structure (1046); the lower end of the tank body (1041) is in an arc-shaped funnel shape and has a small opening, which is connected to a mixed material inlet (1022) of a powder-liquid mixer (102) through a pipeline; the tank body cover (1044) is connected to a mixed material outlet (1023) of the powder-liquid mixer (102) through a pipeline, and receives a mixed liquid of solid fertilizer and water; the liquid level meter (1045) is installed on the side of the tank body (1041) and is used to observe the depth of the liquid fertilizer mixed liquid in the tank body (1041).

5. The concentrated liquid water-soluble fertilizer production device according to claim 4, characterized in that: The shearing liquefier (1043) comprises a shearing liquefier head (1043-1), a central shaft (1043-2), and a support rod (1043-3); the shearing liquefier head (1043-1) comprises a stator (1043-1-1) and a rotor (1043-1-2); the rotor (1043-1-2) is connected to a third drive motor (1042) via the central shaft (1043-2); the rotor (1043-1-2) has blades, and drives the fertilizer mixed liquid to rotate at high speed under the drive of the third drive motor (1042); the stator (1043-1-1) comprises a stator (1043-1-2) and a rotor (1043-1-2); the rotor (1043-1-2) comprises a stator (1043-1 ... stator (1043-1-2) comprises a stator (1043-1-1) and a rotor (1043-1-2); the stator (1043-1-2) comprises a stator (1043-1-1) and a rotor (1043-1-2); the stator (1043-1-2) comprises a stator (1043-1-1) and a rotor (1043-1-2); the stator (1043-1-2) comprises a A gap is provided between the rotor (1043-1-1) and the rotor (1043-1-2), and the fertilizer mixture can collide violently with the stator (1043-1-1) driven by the rotor (1043-1-2), resulting in shearing and processing the material to the micron level; the rotor (1043-1-2) forms a negative pressure vortex during operation, and continuously sucks the lower material into the rotor cavity; a small hole is provided on the stator (1043-1-1), and the material is thrown out of the negative pressure vortex under the action of centrifugal force, so that the material is mixed more evenly and sedimentation of the finished product is avoided.

6. The concentrated liquid water-soluble fertilizer production device according to claim 4, characterized in that: A certain gap is left between the tank cover (1044) and the tank body (1041) for placing part of the liquid nutrient fertilizer to be added; the tank body support structure (1046) is used to support the tank body structure.

7. The concentrated liquid water-soluble fertilizer production device according to claim 1 is characterized in that: The fertilizer storage system (2) comprises a fertilizer storage tank (201), an operating table (202), an inspection staircase (203), a fertilizer pump (204), and a connecting pipe (205); The fertilizer storage tank (201) is used to store fertilizer produced by the fertilizer distribution system; there are multiple fertilizer storage tanks (201); the fertilizer storage tank (201) is connected to the fertilizer distribution system (1) through a connecting pipe (205) and is placed on an operating table (202); one of the fertilizer storage tanks (201) is connected to a fertilizer liquefaction tank (104) of the fertilizer distribution system (1) through a pipe, and after being filled with water, water is transported to the fertilizer liquefaction tank (104) for use in making liquid fertilizer; The operating table (202) is used to place the fertilizer storage tank (201); The inspection staircase (203) is connected to the operating platform (202) and the ground; The connecting pipe (205) is used to connect the fertilizer distribution system (1) and the fertilizer storage system (2); a valve is provided on the connecting pipe (205) to control the fertilizer storage process and fertilizer release process of a single or multiple fertilizer storage tanks (201); The fertilizer pump (204) is located below the fertilizer storage system operating table (202), one end of which is connected to the fertilizer storage tank (201) and the other end of which is connected to the fertilizer release port, and is used to quickly release the highly concentrated liquid fertilizer in the fertilizer storage tank (201) into an external fertilizer transport container.

8. A method for producing concentrated liquid water-soluble fertilizer, characterized in that: The concentrated liquid water-soluble fertilizer production device according to any one of claims 1 to 7 comprises the following steps: a) filling a fertilizer storage tank (201) on an operating table (202) with clean water, draining water into a fertilizer liquefaction tank (104) by gravity, observing the reading of a liquid level meter (105) in real time, and stopping the water supply when the liquid level in the tank body (104) reaches 1 / 3 of the tank body; b) turning on the power switch of the fertilizer distribution system, the dust removal feeding station (101), the self-priming pump (103), the powder-liquid mixer (102), and the shear liquefier (1042) in the system start to work simultaneously, and clean water starts to circulate in the fertilizer liquefaction tank (104), the powder-liquid mixer (102) and the circulation pipeline (105) of the fertilizer distribution system; c) solid fertilizer is fed from the dust removal feeding station (101), and the type and quantity of fertilizer fed are set according to the preset target fertilizer nitrogen, phosphorus and potassium ratio; d) feeding organic materials from the dust removal feeding station (101), wherein the type and quantity of organic materials fed are set according to a preset target fertilizer-organic fertilizer ratio; e) liquid or a smaller amount of solid material is added from a reserved tank opening on the top of the fertilizer liquefaction tank (104), and the type and amount of material added are set according to the corresponding material or element ratio in the preset target fertilizer; f) adding a defoamer from the reserved tank opening on the top of the fertilizer liquefaction tank (104), wherein the defoamer is added at a rate of 1‰ of the total weight of the solid and liquid materials of the fertilizer produced at that time; g) After the material is added, the system is maintained in operation for 4 hours to ensure that all the materials are sheared (2) twice or more by the shear liquefier; h) After the fertilizer distribution system has finished working, the valve of the circulation pipeline (105) in the fertilizer distribution system (1) is closed, and the valve of the connecting pipeline (205) between the fertilizer distribution system (1) and the fertilizer storage system (2) is opened to pump the produced fertilizer to the fertilizer storage tank; i) When using fertilizer, open the fertilizer pump in the fertilizer storage system (2) to quickly suck the fertilizer into the external fertilizer transport container.

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