Device for wrapping surface of ammonium phosphate with microbial fermentation liquor

Abstract

The utility model relates to the technical field of particle wrapping equipment, in particular to a device for wrapping microbial fermentation liquor on the surface of ammonium phosphate, which comprises a microbial fermentation liquor filtering device and a fertilizer wrapping device which are sequentially connected. The first-stage filtering device is connected with the second-stage filtering device through a discharging pipe, and the second-stage filtering device is connected with the spray head through a bacterial liquid conveying pipe; a belt conveyor of the fertilizer wrapping device is connected with a feeding pipe, the feeding pipe is connected with a stirring frame, a spray head is arranged at the top end in the stirring frame, a rotating shaft is arranged in the stirring frame and driven by a stirring motor, spiral blades are arranged on the outer wall of the rotating shaft, and short blades are arranged on the spiral blades. According to the device for wrapping the surface of the ammonium phosphate with the microbial fermentation liquid, the liquid with bioactive macromolecules with certain viscosity is wrapped, and the microbial fermentation liquid is filtered through the two-stage filtering device, so that blockage of a pipeline and a spray head in the bacterium spraying and wrapping process is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of particle coating equipment, and specifically to a device for coating a microbial fermentation broth on the surface of ammonium phosphate. Background Technique

[0002] Coating fertilizers (compound fertilizers) with microbial fermentation broth refers to compound fertilizers (compound fertilizers) with slow-release properties or microbial properties formed by coating water-soluble granular fertilizers with one or more citric acid-soluble or slightly soluble inorganic fertilizers, inorganic compounds or minerals. The coating layer is usually composed of one or several of citric acid-soluble calcium magnesium phosphate fertilizer, magnesium ammonium phosphate, phosphate rock powder, calcium hydrogen phosphate and compounds containing calcium, magnesium, silicon and trace elements. The objects to be coated are usually granular urea, ammonium nitrate, potassium nitrate, and granular nitrophosphate, monoammonium phosphate, diammonium phosphate, or pre-granulated potassium chloride and potassium sulfate can also be used as the core.

[0003] For the functional coating and spreading of existing ammonium phosphate products, mainly liquids are coated, and the coated liquids are bioactive macromolecules with a certain viscosity. Traditional coating methods are prone to clogging of pipelines and nozzles, and it is not easy to coat evenly. During use, the degree of automation is often low, which is inconvenient for workers to operate. Content of the Utility Model

[0004] The purpose of the utility model is to provide a device for coating a microbial fermentation broth on the surface of ammonium phosphate, so as to solve the problems in the above background technique that traditional coating methods are prone to clogging of pipelines and nozzles, it is not easy to coat evenly, and the degree of automation is often low during use, which is inconvenient for workers to operate.

[0005] To achieve the above purpose, the utility model provides a device for coating a microbial fermentation broth on the surface of ammonium phosphate, including a microbial fermentation broth filtering device and a fertilizer coating device connected in sequence. The microbial fermentation broth filtering device includes a primary filtering device and a secondary filtering device. A feeding pipe is fixedly connected to the top end of the primary filtering device, a blanking pipe is arranged below the primary filtering device, the blanking pipe is connected to the secondary filtering device, and a bacterial liquid conveying pipe is arranged below the secondary filtering device;

[0006] The fertilizer coating device includes a belt conveyor. One end of the belt conveyor is connected with a feeding pipe. One end of the feeding pipe is connected with a stirring frame. A nozzle is arranged at the top end inside the stirring frame. A rotating shaft is horizontally arranged inside the stirring frame. A stirring motor is fixedly connected to the outer wall at the other end of the stirring frame. One end of the rotating shaft is driven to rotate by the stirring motor. Spiral blades are arranged on the outer wall of the rotating shaft. Short blades are arranged on the spiral blades. A blanking plate is arranged at the bottom end of the stirring frame.

[0007] Preferably, a screen is provided inside the primary filtration device, a vibration motor is provided below the screen, a fixed seat is provided below the primary filtration device, springs with uniform spacing are provided on the fixed seat, and the structure of the secondary filtration device is the same as that of the primary filtration device.

[0008] Preferably, a metering pump, a pulsation damper, a pressure gauge and a switching valve are provided on the bacterial liquid delivery pipe. A shunt pipe is provided at the rear end of the bacterial liquid delivery pipe. An adjusting valve is provided on each shunt pipe. The shunt pipe is externally connected to a compressed air pipe near the lower part of the adjusting valve. An adjusting valve is provided on the compressed air pipe. The bottom end of the shunt pipe is connected to the inside of the fertilizer wrapping device.

[0009] Preferably, the nozzles are arranged at equal intervals, and the number of nozzles is 6-9.

[0010] Preferably, a base is installed at one end of the rotating shaft. The base is rotationally connected to the rotating shaft through a bearing. The interval between the short blades on the spiral blade is 5-15 cm.

[0011] Preferably, the aperture size of the screen is 0.05 mm - 0.15 mm.

[0012] Preferably, a pulsation damper is provided on the bacterial liquid delivery pipe. The pulsation damper is used to stabilize the pressure of the metering pump and accurately measure the flow rate of the bacterial liquid in the bacterial liquid delivery pipe.

[0013] Preferably, the compressed air pipe compresses the air to disperse the microbial fermentation broth in the gas phase for atomizing and spraying to wrap the ammonium phosphate product.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. In the device for wrapping the microbial fermentation broth on the surface of ammonium phosphate, a liquid containing bioactive macromolecules with a certain viscosity can be wrapped. The microbial fermentation broth is filtered through two-stage filtration devices to prevent blockage of pipelines and nozzles during the spraying and wrapping process.

[0016] 2. In the device for wrapping the microbial fermentation broth on the surface of ammonium phosphate, a sealed structure can be formed during the wrapping process, so that after the bacterial liquid is atomized, it is in a sealed space and the microbial fermentation broth cannot overflow, preventing waste of materials.

[0017] 3. In the device for wrapping the microbial fermentation broth on the surface of ammonium phosphate, nozzles are arranged at equal distances in the material conveying direction. Different numbers of nozzles are used. The material is conveyed and stirred by a spiral conveyor, so that the microbial fermentation broth is evenly sprayed on the surface of the ammonium phosphate product and is violently mixed at the same time, resulting in good wrapping effect and accelerating the evaporation of water in the microbial fermentation broth.

[0018] 4. In the device for wrapping the microbial fermentation broth on the surface of ammonium phosphate, installing a pulse damper on the bacterial liquid delivery pipe can stabilize the pressure of the metering pump and accurately measure the flow rate of the bacterial liquid in the bacterial liquid delivery pipe.

[0019] 5. In the device for wrapping the microbial fermentation broth on the surface of ammonium phosphate, a compressed air pipeline is connected above the nozzle to disperse the microbial fermentation broth in the gas phase, and an atomization spraying method is used to make the microbial fermentation broth more evenly wrap the surface of the ammonium phosphate product. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the spiral blade in the present utility model;

[0022] The meanings of the various reference numerals in the figure are as follows:

[0023] 1. Primary filtration device; 2. Screen; 3. Vibration motor; 4. Spring; 5. Feed pipe; 6. Secondary filtration device; 7. Bacterial liquid delivery pipe; 8. Pressure gauge; 9. Pulse damper; 10. Switch valve; 11. Metering pump; 12. Compressed air pipeline; 13. Diverging pipe; 14. Nozzle; 15. Stirring motor; 16. Base; 17. Bearing; 18. Feed plate; 19. Rotating shaft; 20. Spiral blade; 21. Feeding pipe; 22. Belt conveyor; 23. Fixed seat; 24. Feeding pipe; 25. Stirring frame; 26. Adjusting valve; 27. Short blade. Detailed Embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] The present utility model provides a device for wrapping a microbial fermentation broth on the surface of ammonium phosphate, as Figure 1 - Figure 2As shown in the figure, it includes a microbial fermentation broth filtration device and a fertilizer coating device. The microbial fermentation broth filtration device includes a primary filtration device 1 and a secondary filtration device 6. The top of the primary filtration device 1 is fixedly connected to a feeding pipe 24. Inside the primary filtration device 1, there is a screen 2 to filter out the lumpy substances in the microbial fermentation broth, avoiding clogging the bacterial liquid conveying pipe and the nozzle. Below the screen 2, there is a vibration motor 3 which drives the screen 2 to vibrate, effectively promoting the smoothness of the screen 2 and improving the filtration efficiency. Below the primary filtration device 1, there are a fixed seat 23 and a discharge pipe 5. The fixed seat 23 is provided with evenly spaced springs 4 which can buffer the filtration box body. The discharge pipe 5 is connected to the secondary filtration device 6 for re-filtration to improve the purity of the microbial fermentation broth. The structure of the secondary filtration device 6 is the same as that of the primary filtration device 1. Below the secondary filtration device 6, there is a bacterial liquid conveying pipe 7.

[0027] The fertilizer coating device includes a belt conveyor 22. One end of the belt conveyor 22 is connected to a feeding pipe 21. The feeding pipe 21 is an inclined square pipe structure. One end of the feeding pipe 21 is connected to a stirring frame 25. The ammonium phosphate product is conveyed to the feeding pipe 21 through the belt conveyor 22 and directly enters the stirring frame 25 to realize the automatic feeding operation of the ammonium phosphate product. The stirring frame 25 is a cylindrical structure. At the top inside the stirring frame 25, there is a nozzle 14 to spray the microbial fermentation broth onto the surface of the ammonium phosphate product. Inside the stirring frame 25, a rotating shaft 19 is horizontally arranged. On the outer wall at the other end of the stirring frame 25, there is a fixedly connected stirring motor 15. One end of the rotating shaft 19 is driven to rotate by the stirring motor 15. On the outer wall of the rotating shaft 19, there are spiral blades 20. On the spiral blades 20, there are short blades 27. The ammonium phosphate product sprayed with the microbial fermentation broth is stirred and conveyed through the short blades 27 and the spiral blades 20. At the bottom end of the stirring frame 25, there is a blanking plate 18.

[0028] In this embodiment, on the bacterial liquid conveying pipe 7, there are a metering pump 11, a pulsation damper 9, a pressure gauge 8 and a switching valve 10. The bacterial liquid conveying pipe 7 is provided with a main pipe and a branch pipe. The metering pump 11 is installed on the main pipe. There are two switching valves 10, which are respectively installed on a main pipe and a branch pipe. At the rear end of the bacterial liquid conveying pipe 7, there is a shunt pipe 13. On each shunt pipe 13, there is an adjusting valve 26 which can adjust the flow rate of the microbial fermentation broth in the bacterial liquid conveying pipe and improve the utilization efficiency of the microbial fermentation broth. Near the lower part of the adjusting valve 26 on the shunt pipe 13, the external compressed air pipeline 12 is connected. On the compressed air pipeline 12, there is an adjusting valve 26. The compressed air pipeline 12 can compress the air to disperse the microbial fermentation broth in the gas phase for atomization spraying, making the coating of the ammonium phosphate product more uniform. The bottom end of the shunt pipe 13 is connected to the inside of the fertilizer coating device.

[0029] Specifically, the spray nozzles 14 are arranged at equal intervals, and the number of spray nozzles 14 is 6 - 9. The number and position of the spray nozzles can be installed according to the thickness of the material layer to ensure that each ammonium phosphate product particle can be evenly coated with the microbial fermentation broth.

[0030] Further, a base 16 is installed at one end of the rotating shaft 19. The base 16 is rotatably connected to the rotating shaft 19 through a bearing 17. The interval between the short blades 27 on the spiral blade 20 is 5 - 15 cm. The spiral blade 20 can convey the material, and the short blades 27 make the material fully mixed.

[0031] Further, the aperture size of the sieve mesh 2 is 0.05 mm - 0.15 mm, which can filter out large lumps to prevent clogging of the bacterial liquid delivery pipe and the spray nozzles. The stirring speed of the rotating shaft 19 is 90 - 110 r / min. The length of the stirring frame 25 is 3 - 5 m, the width is 60 - 80 cm, and the height is 55 - 65 cm.

[0032] Further, a pulse damper 9 is provided on the bacterial liquid delivery pipe 7. The pulse damper 9 is used to stabilize the pressure of the metering pump 11 and accurately measure the flow rate of the bacterial liquid in the bacterial liquid delivery pipe 7. The pulse damper can stabilize the pressure of the metering pump and accurately measure the flow rate of the bacterial liquid in the bacterial liquid delivery pipe.

[0033] Further, the compressed air pipeline 12 compresses the air to disperse the microbial fermentation broth in the gas phase for atomizing and spraying to coat the ammonium phosphate product.

[0034] Embodiment 2

[0035] The present utility model also provides a production method for coating the surface of ammonium phosphate with a microbial fermentation broth, which is applied to the production equipment of Embodiment 1 and includes the following steps:

[0036] Convey a microbial fermentation broth of a strain of Bacillus velezensis (hereinafter referred to as the microbial fermentation broth) fermented in a fermentation tank to the primary filtration device 1 through a feeding pipe 24 for filtration, and turn on the vibration motor 3 to effectively promote the unblocking of the sieve mesh 2 with an aperture of 0.1 mm through vibration to improve the filtration efficiency; the bacterial liquid after primary filtration is conveyed to the secondary filtration device 6 through a discharge pipe 5 for secondary filtration, and the microbial fermentation broth that meets the requirements is obtained through filtration by the secondary filtration device 6.

[0037] Through the production method of the present utility model for producing the coating of the microbial fermentation broth on the surface of ammonium phosphate, the microbial fermentation broth is filtered to effectively remove the lumps and particles in the microbial fermentation broth, which can prevent the blockage of the spray nozzles, facilitate improving the spraying efficiency and uniformity, and ensure the uniformity of the ammonium phosphate product after coating.

[0038] The microbial fermentation broth that has undergone two - stage filtration is transported to the stirring frame 25 through the broth delivery pipe 7. During the transportation of the broth, the metering pump 11 and the pulsation damper 9 can accurately measure and quantitatively add the microbial fermentation broth. The pulsation damper 9 can stabilize the pressure of the metering pump 11 and accurately measure the flow rate of the broth in the broth delivery pipe.

[0039] The diammonium phosphate product particles are transported into the stirring frame through the belt conveyor 22 and the feeding pipe 21. The microbial fermentation broth is evenly sprayed onto the surface of the diammonium phosphate particles through the nozzle 14, and the materials are stirred and transported by the screw conveyor. The rotation speed of the rotating shaft is controlled by the rotating motor to be 100 r / min. The wrapped diammonium phosphate is transported to the belt conveyor 22 through the blanking plate 18 at the other end of the stirring frame.

[0040] Example Three

[0041] The present utility model also provides a production method for coating polyglutamic acid on the surface of ammonium phosphate, which is applied to the production equipment of Example One and includes the following steps:

[0042] The polyglutamic acid is transported to the primary filtration device 1 through the feeding pipe 24 for filtration, and the vibration motor 3 is turned on. Vibration effectively promotes the smoothness of the screen 2 with a pore size of 0.1 mm, improving the filtration efficiency; the polyglutamic acid after primary filtration is transported to the secondary filtration device 6 through the blanking pipe 5 for secondary filtration, and the polyglutamic acid that meets the requirements is obtained through filtration by the secondary filtration device 6.

[0043] By using the production method of the present utility model to produce polyglutamic acid - coated ammonium phosphate, the polyglutamic acid is filtered, and the lumps and particles in the polyglutamic acid can be effectively removed, which can prevent the nozzle from being blocked, facilitate improving the spraying efficiency and uniformity, and ensure the uniformity of the ammonium phosphate product after coating.

[0044] The polyglutamic acid that has undergone two - stage filtration is transported to the stirring frame 25 through the delivery pipe 7. During the transportation of the polyglutamic acid, the connection of the metering pump 11 and the pulsation damper 9 can accurately measure and quantitatively add the polyglutamic acid. The pulsation damper 9 can stabilize the pressure of the metering pump 11 and accurately measure the flow rate of the polyglutamic acid in the delivery pipe.

[0045] The diammonium phosphate product particles are transported into the stirring frame through the belt conveyor 22 and the feeding pipe 21. The polyglutamic acid is evenly sprayed onto the surface of the diammonium phosphate particles through the nozzle 14, and the materials are stirred and transported by the screw conveyor. The rotation speed of the rotating shaft is controlled by the rotating motor to be 110 r / min. The wrapped diammonium phosphate is transported to the belt conveyor 22 through the blanking plate 18 at the other end of the stirring frame.

[0046] When the device for wrapping microbial fermentation broth on the surface of ammonium phosphate of the present utility model is in use, first, the microbial fermentation broth is filtered by a filtering device and then conveyed to a stirring frame 25 through a bacterial liquid conveying pipe. The ammonium phosphate product is conveyed to a feeding pipe 21 by a belt conveyor 22 and then directly enters the stirring device 25. The spray heads on the top of the stirring device atomize and spray the microbial fermentation broth onto the ammonium phosphate product conveyed into the stirring device. With the stirring and intense mixing effects of the spiral blades 20 and short blades 27 on the spiral conveyor, the materials in the stirring frame are evenly sprayed and intensely mixed, ensuring that each ammonium phosphate product particle can be evenly wrapped with the microbial fermentation broth. The whole wrapping process sprays and wraps the ammonium phosphate product through the spray heads.

[0047] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An apparatus for coating a microbial fermentation broth on the surface of ammonium phosphate, characterized in that: It includes a microbial fermentation broth filtration device and a fertilizer coating device connected in sequence. The microbial fermentation broth filtration device includes a primary filtration device (1) and a secondary filtration device (6). The top of the primary filtration device (1) is fixedly connected with a feeding pipe (24). A discharging pipe (5) is arranged below the primary filtration device (1). The discharging pipe (5) is connected to the secondary filtration device (6). A bacterial liquid conveying pipe (7) is arranged below the secondary filtration device (6). The fertilizer coating device includes a belt conveyor (22). One end of the belt conveyor (22) is connected with a feeding pipe (21). One end of the feeding pipe (21) is connected with a stirring frame (25). At the top inside the stirring frame (25), there is a spray head (14). A rotating shaft (19) is horizontally arranged inside the stirring frame (25). On the outer wall at the other end of the stirring frame (25), there is a fixedly connected stirring motor (15). One end of the rotating shaft (19) is driven to rotate by the stirring motor (15). On the outer wall of the rotating shaft (19), there are spiral blades (20). On the spiral blades (20), there are short blades (27). At the bottom end of the stirring frame (25), there is a discharging plate (18).

2. The device for coating the surface of ammonium phosphate with a microbial fermentation broth according to claim 1, characterized in that: Inside the primary filtration device (1), there is a sieve mesh (2). Below the sieve mesh (2), there is a vibration motor (3). Below the primary filtration device (1), there is a fixed seat. On the fixed seat (23), there are evenly spaced springs (4). The structure of the secondary filtration device (6) is the same as that of the primary filtration device (1).

3. The device for wrapping the microbial fermentation broth on the surface of ammonium phosphate according to claim 1, wherein: On the bacterial liquid conveying pipe (7), there are a metering pump (11), a pulse damper (9), a pressure gauge (8) and a switching valve (10). At the rear end of the bacterial liquid conveying pipe (7), there is a shunt pipe (13). On each shunt pipe (13), there is an adjusting valve (26). Near the lower part of the adjusting valve (26) on the shunt pipe (13), the external compressed air pipe (12) is connected. On the compressed air pipe (12), there is an adjusting valve (26). The bottom end of the shunt pipe (13) is connected to the inside of the fertilizer coating device.

4. The device for coating the surface of ammonium phosphate with a microbial fermentation broth according to claim 1, characterized in that: The spray heads (14) are arranged at equal intervals, and the number of the spray heads (14) is 6 - 9.

5. The device for coating the surface of ammonium phosphate with a microbial fermentation broth according to claim 1, characterized in that: One end of the rotating shaft (19) is equipped with a base (16). The base (16) is rotationally connected with the rotating shaft (19) through a bearing (17). The interval between the short blades (27) on the spiral blades (20) is 5 - 15 cm.

6. The device for wrapping the microbial fermentation broth on the surface of ammonium phosphate according to claim 2, wherein: The pore size of the sieve mesh (2) is 0.05 mm - 0.15 mm.

7. The device for coating the surface of ammonium phosphate with a microbial fermentation broth according to claim 3, characterized in that: The compressed air pipe (12) compresses the air to disperse the microbial fermentation broth in the gas phase for atomizing and spraying to coat the ammonium phosphate product.

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