Spraying device for sustained and controlled release fertilizer coating production

Abstract

The utility model provides a spraying device for sustained and controlled release fertilizer coating production, which belongs to the technical field of fertilizer production and comprises a shell, a stirring tank and a metering pump are arranged in the shell, a feed port of the metering pump is connected with a bottom outlet of the stirring tank through a pipeline, and a discharge port of the metering pump is connected with a spraying mechanism through a pipeline. According to the utility model, the accuracy of the using amount of the coating material can be improved, and meanwhile, the spraying uniformity can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of fertilizer production, in particular to a spraying device for slow-release and controlled-release fertilizer coating production. Background Art

[0002] Slow-release fertilizer is a general term for a type of fertilizer that uses physical, chemical, and biological methods to delay the release rate of fertilizer nutrients in the soil, so that the nitrogen, phosphorus, potassium and other nutrients are slowly released according to a certain release rate and release cycle. At present, the only fertilizers that can truly achieve a controlled-release effect are polymer-coated fertilizers. Common ones include phenolic resin-coated slow-release fertilizers, polyvinyl alcohol-coated slow-release fertilizers, alkyd resin-coated slow-release fertilizers, polyurethane-coated slow-release fertilizers, urea-formaldehyde resin-coated slow-release fertilizers, and polyolefin-coated slow-release fertilizers.

[0003] In the production process of coated slow-release fertilizers, it is usually necessary to spray the coating material onto the fertilizer particles. At present, gravity spraying is usually adopted. The coating agent flows naturally into the pipe through a funnel. Small holes are opened at intervals at the bottom of the pipe, and the liquid flows out through the small holes. Since there is no pressure in the direct current, the coating agent flows out in a thin stream, and there are blind spots in the spraying, resulting in a small spraying area, uneven spraying, inaccurate spraying metering, and large metering errors, which leads to high consumption of coating materials and increased production costs. Utility Model Content

[0004] In view of the defects or deficiencies in the prior art, the utility model provides a spraying device for the production of slow-release fertilizer coating, which can improve the accuracy of the amount of coating material used and ensure the uniformity of spraying.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An embodiment of the present utility model provides a spraying device for the production of slow-release fertilizer coating, comprising a shell, wherein a stirring tank and a metering pump are arranged inside the shell, the feed port of the metering pump is connected to the bottom outlet of the stirring tank through a pipeline, and the discharge port of the metering pump is connected to the spraying mechanism through a pipeline.

[0007] Furthermore, the stirring tank is located at the upper part of the shell, and a stirring motor and a reducer are fixed above the stirring tank, and the output end of the stirring motor is connected to the input end of the reducer.

[0008] Furthermore, the output end of the reducer passes through the top cover of the mixing tank and extends into the interior of the mixing tank.

[0009] Furthermore, the output end of the reducer is connected to the stirring blade through a stirring rod.

[0010] Furthermore, the axis of the stirring rod coincides with the axis of the stirring tank.

[0011] Furthermore, a heating chamber is provided at the lower portion of the shell, and a heating wire is provided inside the heating chamber.

[0012] Furthermore, an exhaust port and an air inlet are provided at the top of the heating chamber, and a circulation fan is provided at both the exhaust port and the air inlet. The circulation fan at the exhaust port is arranged in the opposite direction to the circulation fan at the air inlet.

[0013] Furthermore, a driving motor is provided on the outside of the shell, and an output shaft of the driving motor passes through the side wall of the shell and is connected to the metering pump.

[0014] Furthermore, the housing and the driving motor are both fixed on the moving vehicle.

[0015] Furthermore, the spraying mechanism includes a spraying pipe, and the spraying pipe is provided with a nozzle, and the nozzle can spray out a fan-shaped liquid surface.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The utility model provides a metering pump, connects the stirring mechanism and the spraying mechanism through the metering pump, and uses the metering pump to control the flow rate of the coating material, thereby saving production costs.

[0018] 2. The coating material in the present invention is formed into a fan-shaped liquid surface under the action of the nozzle and is evenly sprayed onto the surface of the fertilizer particles, thereby ensuring the uniformity of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a spraying device in an embodiment of the present utility model;

[0020] Among them, 1. Shell; 2. Mixing tank; 3. Mixing motor; 4. Reducer; 5. Mixing rod; 6. Mixing blade; 7. Heating chamber; 8. Heating wire; 9. Metering pump; 10. Drive motor; 11. Mobile trolley; 12. Spraying pipe; 13. Fan-shaped liquid surface; 14. Fertilizer particles. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] A typical implementation of the present invention is as follows: Figure 1As shown, a spraying device for the production of slow-release fertilizer coating includes a shell 1, which is a cylindrical structure. A stirring mechanism is provided on the upper part of the shell 1. The stirring mechanism includes a stirring tank 2 and a stirring motor 3. The stirring motor 3 is located above the top cover of the stirring tank 2. A reducer 4 is also provided above the top cover of the stirring tank 2. The output end of the stirring motor 3 is connected to the input end of the reducer 4. The output end of the reducer 4 passes through the top cover of the stirring tank 2 and extends to the interior of the stirring tank 2. The output end of the reducer 4 is connected to the stirring blade 6 through the stirring rod 5, wherein the axis of the stirring rod 5 coincides with the axis of the stirring tank 2, so that the stirring blade 6 is driven to rotate by the stirring motor 3 to stir the coating material in the stirring tank 2.

[0023] A heating chamber 7 is provided at the lower portion of the shell 1, and a heating wire 8 is provided inside the heating chamber 7. The heating wire 8 can heat the air. An exhaust port and an air inlet are provided at the top of the heating chamber 7. Circulation fans are provided at both the exhaust port and the air inlet. The circulation fan at the exhaust port is set in the opposite direction to the circulation fan at the air inlet. The circulation fan at the exhaust port can send the heated air in the heating chamber 7 into the shell 1, thereby heating and insulating the coating material in the stirring tank 2. The circulation fan at the air inlet can send the air in the shell 1 into the heating chamber 7 for heating. By arranging circulation fans at the exhaust port and the air inlet, hot air circulation in the shell 1 is realized.

[0024] A metering pump 9 is provided in the housing 1 and is located above the heating chamber 7 . The feed port of the metering pump 9 is connected to the bottom outlet of the stirring tank 2 through a pipeline, and the discharge port of the metering pump 9 is connected to the spraying mechanism through a pipeline.

[0025] A drive motor 10 is provided on the outside of the shell 1. The output shaft of the drive motor 10 passes through the side wall of the shell 1 and is connected to the metering pump 9. The metering pump 9 is driven to rotate by the drive motor 10. The flow rate of the coating material is controlled by setting the metering pump 9, thereby saving costs.

[0026] The housing 1 and the driving motor 10 are both fixed on a moving trolley 11 , and the moving trolley 11 drives the spraying device to move to any position for convenient spraying.

[0027] The spraying mechanism includes a spraying pipe 12 , on which a nozzle is provided. The nozzle can spray a fan-shaped liquid surface 13 , thereby evenly spraying the coating material onto the surface of the fertilizer particles 14 to ensure the uniformity of the coating.

[0028] When in use, first open the top cover of the stirring tank 2, pour the coating material into the stirring tank 2, close the top cover of the stirring tank 2 and turn on the stirring motor 3 to stir the coating material, and at the same time turn on the heating wire 8 and the circulating fan to realize the hot air circulation inside the shell 1, thereby heating and keeping the coating material in the stirring tank 2 warm;

[0029] Push the mobile cart 11 to the predetermined location, open the valve at the bottom outlet of the mixing tank 2, and turn on the drive motor 10 at the same time. The metering pump 9 transports the coating material from the mixing tank 2 to the spraying pipe 12. At the same time, the flow of the coating material is controlled by setting the metering pump 9, thereby saving costs.

[0030] Hold the spray pipe 12 above the fertilizer particles 14, and the coating material is formed into a fan-shaped liquid surface 13 under the action of the nozzle and evenly sprayed onto the surface of the fertilizer particles 14, thereby ensuring the uniformity of the coating.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A spraying device for slow-release fertilizer coating production, characterized in that: The invention comprises a shell, wherein a stirring tank and a metering pump are arranged inside the shell, a feed port of the metering pump is connected to an outlet at the bottom of the stirring tank through a pipeline, and a discharge port of the metering pump is connected to a spraying mechanism through a pipeline.

2. A spraying device for producing slow-release fertilizer coating according to claim 1, characterized in that: The stirring tank is located at the upper part of the shell, and a stirring motor and a reducer are fixed above the stirring tank. The output end of the stirring motor is connected to the input end of the reducer.

3. A spraying device for producing slow-release fertilizer coating according to claim 2, characterized in that: The output end of the reducer passes through the top cover of the mixing tank and extends into the interior of the mixing tank.

4. A spraying device for producing slow-release fertilizer coating according to claim 3, characterized in that: The output end of the reducer is connected to the stirring blade through a stirring rod.

5. A spraying device for producing slow-release fertilizer coating according to claim 4, characterized in that: The axis of the stirring rod coincides with the axis of the stirring tank.

6. The spraying device for producing slow-release fertilizer coating according to claim 1, characterized in that: A heating chamber is provided at the lower portion of the shell, and a heating wire is provided inside the heating chamber.

7. A spraying device for producing slow-release fertilizer coating according to claim 6, characterized in that: An air exhaust port and an air inlet are provided on the top of the heating chamber. Circulation fans are provided at both the air exhaust port and the air inlet. The circulation fans at the air exhaust port and the circulation fans at the air inlet are provided in opposite directions.

8. The spraying device for producing slow-release fertilizer coating according to claim 1, characterized in that: A driving motor is arranged outside the shell, and an output shaft of the driving motor passes through the side wall of the shell and is connected to the metering pump.

9. A spraying device for producing slow-release fertilizer coating according to claim 8, characterized in that: The housing and the driving motor are both fixed on the moving trolley.

10. The spraying device for producing slow-release fertilizer coating according to claim 1, characterized in that: The spraying mechanism comprises a spraying pipe, on which a nozzle is provided, and the nozzle can spray a fan-shaped liquid surface.

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