Trace element fertilizer and preparation method thereof

Abstract

The invention belongs to the technical field of fertilizer preparation, and particularly relates to a trace element fertilizer and a preparation method thereof and trace element fertilizer preparation equipment, the trace element fertilizer preparation equipment comprises two fixing frames and a matching rod, two side rods are fixedly connected between the two fixing frames, a moving frame is slidably connected between the two side rods, and the matching rod is arranged in the moving frame. A treatment box is slidably connected to the moving frame, a transmission column body is connected to the treatment box, a plurality of arc blocks are fixedly connected to the matching rod, the transmission column body can make contact with the arc blocks, a plurality of through holes are formed in the treatment box, and the arc blocks can be divided into multiple groups; the preparation method of the trace element fertilizer preparation equipment for preparing the trace element fertilizer comprises the following steps: step 1, adding crushed trace element fertilizer raw materials into the treatment box through the feeding hole, and closing the cover plate to enable the equipment to be in a closed state; and fertilizer particles can be vibrated and dried, the drying effect is improved, rapid cooling can be achieved after drying, and caking is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fertilizer preparation, and particularly relates to a trace element fertilizer and a preparation method thereof. BACKGROUND

[0002] The trace element fertilizer is an indispensable nutrient supplement in the growth process of crops, and plays a key role in improving crop yield, quality and stress resistance. However, the trace element fertilizer is easy to absorb moisture and clog during the production process, resulting in poor flowability and easy adhesion of the crushed particles, which not only affects the subsequent processing efficiency, but also reduces the uniformity and application effect of the product. The traditional drying equipment adopts static drying or simple fluidized bed technology, which has the following defects.

[0003] Firstly, in the static drying process, a stable air boundary layer is easily formed on the surface of the fertilizer particles, which hinders the heat transfer to the inside and the moisture diffusion to the outside, resulting in insufficient drying and high energy consumption. Secondly, the trace element fertilizer particles have small particle size and large specific surface area, and are more likely to stick together in a wet and hot environment. Although the existing equipment can alleviate clogging through mechanical stirring, the stirring force is uneven or insufficient, which still cannot effectively break the agglomeration between the particles, affecting the flowability and particle size distribution of the product after drying. Finally, if the high-temperature fertilizer after drying directly contacts the cold air, the surface will quickly absorb moisture due to the temperature difference, and clog again. The traditional process often ignores the humidity control in the cooling stage, and needs to add an anti-clogging agent, which increases the cost and may introduce impurities. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to provide a trace element fertilizer and a preparation method thereof, which can vibrate and dry the fertilizer particles, improve the drying effect, and quickly cool after drying to avoid clogging.

[0005] A trace element fertilizer preparation device, comprising a fixed frame and a matching rod, the fixed frame is provided with two, two fixed frames are fixedly connected with two side rods, two side rods are slidably connected with a moving frame between the two, the moving frame is slidably connected with a treatment box, the treatment box is connected with a transmission column, the matching rod is fixedly connected with a plurality of arc blocks, the transmission column can contact the plurality of arc blocks, and a plurality of through holes are formed in the treatment box.

[0006] The plurality of arc blocks can be divided into a plurality of groups, and the height of the plurality of arc blocks in each group gradually increases from left to right.

[0007] Two sliding grooves are fixedly connected to each moving frame, and two sliding rods are fixedly connected to each treatment box, so as to realize the sliding connection of the treatment box on the moving frame by inserting the two sliding rods into the two sliding grooves. A plurality of first compression springs are fixedly connected between the moving frame and the treatment box.

[0008] It also comprises two upper cover plates slidably connected to the treatment box.

[0009] The microelement fertilizer preparation equipment is used for a preparation method of microelement fertilizer, and the method comprises the following steps:

[0010] Step one: the crushed microelement fertilizer raw material is added into the processing box through the feeding port, the cover plate is closed, and the equipment is in a closed state;

[0011] Step two: dry hot air is introduced, the equipment is started to move the processing box horizontally and vibrate up and down, the material is scattered, and uniform drying is promoted;

[0012] Step three: the electric heating rod is started to heat and reciprocally move, the fertilizer is assisted to heat, and the drying efficiency is further improved;

[0013] Step four: stop the hot air and introduce dehumidification cold air. The processing box continues to move horizontally and vibrate, the material is quickly and uniformly cooled, and caking is prevented;

[0014] Step five: after cooling, the discharge port is opened, the finished fertilizer is discharged and immediately sealed and packaged to prevent moisture absorption. BRIEF DESCRIPTION OF DRAWINGS

[0015] The application will be further described in detail in combination with the drawings and specific implementation methods.

[0016] Figure 1 and Figure 2 It is a structural schematic view of a microelement fertilizer preparation equipment;

[0017] Figure 3 It is a structural schematic view of a fixed frame;

[0018] Figure 4 It is a structural schematic view of a moving frame;

[0019] Figure 5 It is a structural schematic view of a matching rod;

[0020] Figure 6 It is a structural schematic view of an upper cover plate;

[0021] Figure 7 It is a structural schematic view of a moving seat;

[0022] Figure 8 It is a structural schematic view of a moving frame;

[0023] Figure 9 It is a structural schematic view of a threaded rod;

[0024] Figure 10 It is a structural schematic view of an auxiliary plate. DETAILED DESCRIPTION

[0025] A trace element fertilizer preparation equipment, including fixed frame 101 and cooperation pole 201, the fixed frame 101 is equipped with two, two fixed frame 101 between fixed connection has two side poles 102, two side poles 102 between sliding connection has moving frame 103, moving frame 103 on sliding connection has processing box 301, processing box 301 on connection has transmission column 401, cooperation pole 201 on fixed connection has multiple arc blocks 202, transmission column 401 can contact with multiple arc blocks 202, processing box 301 on opening has multiple through-holes, one of two fixed frame 101 on fixed connection has first motor, first motor's output shaft on fixed connection has lead screw, lead screw and moving frame 103 screw transmission.

[0026] Fixed frame 101 and cooperation pole 201 are installed in a rectangular housing, which is provided with a slot for adding and discharging material, and the adding and discharging material slots are provided with a cover plate that can slide to block the slot and has a power source, and a gas pipe for supplying dry hot air and dehumidified cold air vertically in the housing is provided.

[0027] The easily moisture-absorbing and caking trace element fertilizer particles after crushing and granulation are introduced into the processing box 301, then the moving frame 103 is operated to slide from left to right between the two side poles 102, in this process, the gas pipe for supplying dry hot air vertically from top to bottom in the housing continuously blows hot air, which can continuously pass through the multiple through-holes on the processing box 301, thereby drying the surface water and combined water in the fertilizer particles in the processing box 301, thereby removing the moisture in the fertilizer particles, at the same time, when the moving frame 103 slides from left to right, the transmission column 401 gradually contacts with the multiple arc blocks 202, and when the transmission column 401 contacts with an arc block 202, the arc block 202 pushes the transmission column 401 to make the processing box 301 slide upward on the moving frame 103, thereby making the processing box 301 vibrate up and down reciprocally when the moving frame 103 moves from left to right, thereby preventing the fertilizer particles in the processing box 301 from sticking together, and making each part of the fertilizer particles contact with the dry hot air uniformly, thereby improving the drying effect of the fertilizer particles.

[0028] After the moving frame 103 slides to the rightmost side, the moving frame 103 can be slid left to reset, then the above steps are repeated to fully dry the fertilizer particles in the moving frame 103.

[0029] The mechanical vibration forces the fertilizer particles to be in a state of continuous movement, which not only prevents the particles from sticking to each other, but more importantly, the air boundary layer on the surface of each particle is disturbed, which hinders the heat transfer to the inside of the particle and the diffusion of moisture from the surface of the particle to the air in the traditional static or simple fluidized bed. The vibration constantly updates the contact interface between the particle and the hot air, greatly reduces the heat and mass transfer resistance, thereby accelerating the moisture removal, shortening the drying time, and reducing the local overheating or insufficient drying caused by uneven heating;

[0030] Subsequently, the dry hot air can be stopped, and the operation of introducing the dehumidified cold air can be started. Then the above steps are repeated, so that the cold air can quickly take away the excess heat of the fertilizer particles, and the temperature of the fertilizer particles can be quickly reduced to near room temperature. This process can effectively prevent the hot fertilizer particles from suddenly contacting the cold air and absorbing moisture to form lumps. Then the material is discharged through the discharge port, and the subsequent packaging operation is quickly performed to complete the fertilizer preparation task. During the dehumidification process, the moving frame 103 can still slide up and down on the moving frame 103, so that the fertilizer particles can also be shaken up and down during the dehumidification process, thereby increasing the floating time of the fertilizer particles and further facilitating the rapid dehumidification and cooling of the fertilizer particles.

[0032] At the same time, the vibration effect of the fertilizer particles during the drying and dehumidification process can also be achieved by violent throwing, rolling and collision and friction between particles, which can break the weak agglomerates formed in the early stage of drying, and can polish or reshape the surface of the particles to a certain extent. This helps to obtain a final product with more concentrated particle size distribution, smoother surface and better flowability.

[0033] The plurality of arc blocks 202 can be divided into multiple groups, and the height of the plurality of arc blocks 202 in each group gradually increases from left to right. Preferably, each group is provided with three arc blocks 202.

[0034] The plurality of arc blocks 202 of different heights can make the treatment box 301 slide up and down at different heights when the treatment box 301 is in contact with the transmission column 401 and the arc blocks 202 to achieve the effect of up and down vibration, thereby making the vibration amplitude more diverse and enabling the fertilizer particles to shake in different degrees, thereby further improving the anti-blocking effect of the fertilizer particles during subsequent drying and dehumidification and the effect of contacting more air.

[0035] At the same time, regular, multi-amplitude vibration ensures that fertilizer particles in every part of the processing box are periodically and indiscriminately thrown up and turned over, which completely avoids the problems of local overheating, insufficient drying or dead zones of uneven cooling in traditional equipment, ensures the high consistency of the moisture content and physical properties of the final product, and improves the quality of the fertilizer product

[0036] At the same time, the arrangement of multiple sets of arc blocks 202 enables the processing box 301 to be segmented and regularly vibrated, so that the multiple sets of arc blocks of different heights force the transmission column 401 and the processing box 301 to experience a series of periodic changes in vertical displacement with amplitudes from small to large and then from large to small during horizontal movement. This asymmetric and nonlinear motion, which combines vertical impact, horizontal throwing and multidimensional collision between particles, is much more effective in breaking up material lumps and renewing the gas-solid boundary layer on the surface of the particles than simple sinusoidal vibration, thereby greatly enhancing the heat and mass transfer efficiency.

[0037] Each of the moving frames 103 is fixedly connected with two sliding grooves 104, and each of the processing boxes 301 is fixedly connected with two sliding strips 302, which are inserted into the two sliding grooves 104 to achieve sliding connection of the processing box 301 on the moving frame 103. A plurality of first compression springs are fixedly connected between the moving frame 103 and the processing box 301.

[0038] The arrangement of multiple first compression springs enables, after the processing box 301 is slid upward by contact with the arc blocks 202 through the transmission column 401, the multiple first compression springs to exert a downward pulling force on the processing box 301 when the transmission column 401 is disengaged from the arc blocks 202, so as to pull the processing box 301 downward and reset the processing box 301, thereby achieving the multiple sliding vibration effect of the processing box 301 and the purpose of reciprocating vibration of the fertilizer particles.

[0039] The two upper cover plates 303 are also slidingly connected to the processing box 301, and the processing box 301 is fixedly connected with a first electric push rod capable of pushing the two upper cover plates 303 to slide. Each of the upper cover plates 303 is provided with a plurality of auxiliary controls.

[0040] When the material is added to the processing box 301, the two upper cover plates 303 can be slid away from each other to open the processing box 301, and then the processing box 301 is moved to a position coinciding with the addition slot so that the fertilizer particles can smoothly enter the processing box 301 through the addition slot. Then, the two upper cover plates 303 are slid close to each other to close the processing box 301, thereby providing a restriction for subsequent drying and dehumidification operations to prevent the fertilizer particles from spilling out. After the dehumidification operation is completed, the two upper cover plates 303 are opened by moving away from each other, and the fertilizer particles can be taken out through the discharge slot.

[0041] In actual use, the front and rear sides of the processing box 301 are provided with baffles to prevent the fertilizer particles from spilling out. The baffles are not shown in the figure for the convenience of observing other structures.

[0042] The connecting plate 601 connected to the processing box 301 is further provided with the insertion rod 602 fixedly connected thereto. The sliding part 406 connected to the transmission column 401 is provided with a slot. The sliding part 406 and the connecting plate 601 are slidably connected through the cooperation of the slot and the insertion rod 602. The circular plate 402 is fixedly connected to the front end of the sliding part 406. The contact column 403 is fixedly connected to the circular plate 402. The transmission column 401 can slide in the processing box 301.

[0043] When it is necessary to reverse the sliding of the processing box 301 from right to left, the sliding part 406 is slid forward on the connecting plate 601, so that the sliding part 406, the circular plate 402, the contact column 403 and the transmission column 401 are all slid forward. Thus, the transmission column 401 is not aligned with the positions of the plurality of arc blocks 202, so that the transmission column 401 does not interfere with the plurality of arc blocks 202 when the processing box 301 is reversely slid from right to left. Thus, the smooth resetting of the processing box 301 is ensured.

[0044] The auxiliary plate 701 is further provided with the front side arc part 702 and the rear side arc part 703. The second compression spring is fixedly connected between the connecting plate 601 and the circular plate 402. The front side arc part 702 and the rear side arc part 703 are oppositely directed.

[0045] When the processing box 301 is slid from left to right, the contact column 403 is abutted against the auxiliary plate 701 by the elastic force of the second compression spring. When the processing box 301 is slid to the farthest position to the right and then reversely slid for resetting, the contact column 403 is misaligned with the rightmost side of the auxiliary plate 701. At this time, the second compression spring makes the contact column 403 coincide with the horizontal midpoint of the auxiliary plate 701. When the processing box 301 is reversely slid to the left, the processing box 301 is guided by the front side arc part 702. Thus, the contact column 403 is gradually moved to the front side of the auxiliary plate 701. Thus, the contact column 403 is moved forward, so that the circular plate 402, the sliding part 406 and the transmission column 401 are integrally moved forward. Thus, the transmission column 401 is misaligned with the positions of the plurality of arc blocks 202. Thus, the reversely sliding resetting is smoothly performed. The above operation can be automatically completed through mechanical transmission, so that the stability and reliability of the equipment are improved. The entire system does not need complex elements such as electric control sensors, electromagnetic valves or PLC programs. The structure is simple, dustproof, moistureproof and corrosion-resistant, and is very suitable for industrial occasions with relatively poor environments such as fertilizer production workshops.

[0046] When the contact column rod 403 is staggered with the leftmost side of the auxiliary plate 701, the second compression spring will again contact the column rod 403 at the horizontal midpoint of the auxiliary plate 701, at this time, sliding the processing box 301 to the right will make the processing box 301 be reversely guided by the rear arc part 703 opposite to the front arc part 702, and then make the contact column rod 403 move to the rear side of the auxiliary plate 701, so that the contact column rod 403 moves backward, facilitating the subsequent transmission column body 401 to contact the plurality of arc blocks 202, and completing the subsequent vibration transmission effect.

[0047] The connecting sheet 601 is rotationally connected on the processing box 301, the transmission column body 401 is fixedly connected with a plurality of reinforcing protrusions 405, the auxiliary plate 701 is fixedly connected with an extension rod 704, and the processing box 301 is fixedly connected with a second motor, the output shaft of the second motor is fixedly connected with a gear ring, and the connecting sheet 601 is fixedly connected with a gear.

[0048] During the contact of the transmission column body 401 with the plurality of arc blocks 202, the connecting sheet 601 can be continuously rotated on the processing box 301, so that the transmission column body 401 is in contact with the plurality of arc blocks 202 in a rotating manner, at this time, the plurality of reinforcing protrusions 405 on the transmission column body 401 can further provide additional driving force for the vibration effect of the processing box 301 when contacting the arc blocks 202, so that the processing box 301 can be driven by the plurality of reinforcing protrusions 405 to form a plurality of slight vibrations during the plurality of reciprocating long-distance vibrations driven by the plurality of arc blocks 202, thereby further enriching the vibration effect of the fertilizer particles and improving the anti-adhesion effect and facilitating uniform contact with hot air or cold air.

[0049] The high-frequency pulse force generated by the reinforcing protrusions 405 can more effectively penetrate the material layer and act on each tiny fertilizer particle. This intense and instantaneous impact energy can efficiently break the weak agglomerates and soft lumps formed during the initial drying process.

[0050] At the same time, the collision and friction between the particles are greatly intensified, and the air boundary layer on the surface of each particle is violently disturbed. This enables the hot air or cold air to more fully and efficiently contact the particle surface, and heat and moisture can be more quickly transferred into or out of the particle interior, thereby significantly shortening the drying and cooling time and improving production efficiency. For materials with higher humidity and stronger adhesion, simple and large amplitude vibration may not be enough to prevent adhesion, at which time the additional breaking force provided by the above-mentioned frequent and small-range vibration mode is particularly effective, enabling the device to handle a wider range of materials.

[0051] When the contact column rod 403 moves to a position about to contact the front arc part 702 or the rear arc part 703, the rotation of the circular sheet 402 is stopped, thereby providing stable protection for the subsequent transmission effect.

[0052] The extension rod 704 is arranged to ensure that the contact column rod 403 is always in contact with the extension rod 704 when the transmission column body 401 rotates to drive the disc 402 and the contact column rod 403 to rotate, so that the contact column rod 403 is always at the contact height of the auxiliary plate 701, and the subsequent transmission effect is stable.

[0053] The threaded rod 404 is further arranged between the transmission column body 401 and the sliding part 406, the threaded rod 404 is driven by a screw to move the moving seat 501, the moving seat 501 is fixed with the electric heating rods 502 on both sides, and the rectangular rod is fixed on the processing box 301. The moving seat 501 is slidably connected to the rectangular rod.

[0054] During the high-temperature drying and continuous rotation of the connecting plate 601, the connecting plate 601 drives the disc 402 to rotate continuously, and the threaded rod 404 rotates to drive the moving seat 501 to slide back and forth in the processing box 301 along the rectangular rod under the limitation of the rectangular rod. During the process, the moving seat 501 drives the two electric heating rods 502 to move synchronously, and the two electric heating rods 502 continuously heat to assist in heating different positions of the fertilizer particles. At the same time, cooperating with the up-down vibration of the fertilizer particles can drive the fertilizer particles to move in a large range in the processing box 301, so that the two electric heating rods 502 can assist to improve the high-temperature drying effect of the fertilizer particles.

[0055] When the moving seat 501 slides to the most front position, the connecting plate 601 can be reversely rotated to reversely slide the moving seat 501 backward, so as to comprehensively improve the auxiliary heating and scraping effect

[0056] During the dehumidification process, the two electric heating rods 502 stop heating, and the two electric heating rods 502 are used to scrape the vibrating fertilizer in a large range, so as to also improve the dehumidification effect.

[0057] The microelement fertilizer preparation equipment is used for the preparation method of the microelement fertilizer, and the method comprises the following steps:

[0058] Step one: the crushed microelement fertilizer raw material is added to the processing box 301 through the feeding port, the cover plate is closed, and the equipment is in a closed state;

[0059] Step two: dry hot air is introduced, the equipment is started to move the processing box 301 horizontally and vibrate up and down, the material is scattered, and uniform drying is promoted;

[0060] Step three: the electric heating rod 502 is started to heat and reciprocate to assist in heating the fertilizer, and the drying efficiency is further improved;

[0061] Step four: stop hot air, turn on dehumidification cold air. The treatment box continues to move horizontally and vibrate, so that the material is quickly and uniformly cooled, preventing caking;

[0062] Step five: after cooling, open the discharge port, discharge the finished fertilizer and immediately seal and package to prevent moisture absorption.

[0063] The trace element fertilizer prepared by the trace element fertilizer preparation method comprises the following raw materials in parts by weight: 25 parts of zinc sulfate heptahydrate, 20 parts of manganese sulfate monohydrate, 15 parts of boric acid, 8 parts of ammonium molybdate and 12 parts of ferrous sulfate heptahydrate.

Claims

1. A micronutrient fertilizer preparation device, characterized in that, Including fixed frame and cooperation pole, the fixed frame is equipped with two, two fixed frame is fixedly connected with two side poles, two side poles are slidably connected with moving frame, moving frame is slidably connected with processing box, processing box is connected with transmission column, cooperation pole is fixedly connected with multiple arc blocks, transmission column can contact with multiple arc blocks, multiple through holes are formed in processing box.

2. The microelement fertilizer preparation apparatus according to claim 1, characterized in that, Multiple arc blocks can be divided into multiple groups, and the height of multiple arc blocks in each group gradually increases from left to right.

3. The microelement fertilizer preparation apparatus according to claim 2, characterized in that, Two sliding grooves are fixedly connected on each moving frame, two sliding strips are fixedly connected on each processing box, the sliding connection of processing box on moving frame is realized by the mode that two sliding strips are inserted into two sliding grooves, and multiple first compression springs are fixedly connected between moving frame and processing box.

4. The microelement fertilizer preparation apparatus according to claim 3, wherein Two upper cover plates slidably connected on processing box are further included.

5. The microelement fertilizer preparation apparatus according to claim 3, wherein A connecting piece connected on processing box is further included, a plug rod is fixedly connected on connecting piece, a sliding part connected with transmission column is further included, a slot is formed in sliding part, the sliding connection effect of sliding part and connecting piece is realized by the cooperation of groove and plug rod, a round piece is fixedly connected on the front end of sliding part, and a contact column is fixedly connected on round piece.

6. The microelement fertilizer preparation apparatus according to claim 5, wherein An auxiliary plate is further included, a front side arc part and a rear side arc part are arranged on auxiliary plate, and a second compression spring is fixedly connected between connecting piece and round piece.

7. The microelement fertilizer preparation apparatus according to claim 6, characterized in that, The connecting piece is rotatably connected on processing box, multiple reinforcing protrusions are fixedly connected on transmission column, and an extension rod is fixedly connected on auxiliary plate.

8. The microelement fertilizer preparation apparatus according to claim 7, characterized by A threaded rod fixedly connected between transmission column and sliding part is further included, a nut screw transmission moving seat is arranged on threaded rod, electric heating rods are fixedly connected on both sides of moving seat, a rectangular rod is fixedly connected on processing box, and moving seat is slidably connected on rectangular rod.

9. The method of claim 8, wherein the microelement fertilizer preparation device is used to prepare a microelement fertilizer. The method comprises the following steps: Step one: the crushed trace element fertilizer raw materials are added into the processing box through the feeding port, the cover plate is closed, and the equipment is in a closed state; Step two: dry hot air is introduced, the equipment is started to move the processing box horizontally and vibrate up and down, the materials are scattered, and uniform drying is promoted; Step three: the electric heating rod is started to heat and reciprocate, the fertilizer is assisted to heat, and the drying efficiency is further improved; Step four: stop the hot air and introduce the dehumidifying cold air. The processing box continues to move horizontally and vibrate, so that the materials are quickly and uniformly cooled to prevent caking; Step five: after cooling, the discharge port is opened, the finished fertilizer is discharged and immediately sealed and packaged to prevent moisture absorption.

10. The microelement fertilizer prepared by the method of claim 9, characterized in that, The trace element fertilizer comprises the following raw materials in parts by weight: zinc sulfate heptahydrate 15-25 parts, manganese sulfate monohydrate 10-20 parts, boric acid 5-15 parts, ammonium molybdate 2-8 parts, and ferrous sulfate heptahydrate 8-12 parts.

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