Cooling device for sustained and controlled release fertilizer coating production

Abstract

The utility model provides a cooling device for sustained and controlled release fertilizer coating production, which belongs to the technical field of fertilizer production, and comprises a cooler main body, a cavity is arranged in the cooler main body, a plurality of cooling fins are vertically arranged in the cooler main body, the plurality of cooling fins are uniformly distributed in an upper layer and a lower layer, a plurality of pressure reduction air outlets are formed in the outer walls of the cooling fins, a plurality of air inlets are formed in the outer wall of the cooler body, and the air inlets are communicated with the two layers of cooling fins through pipelines. Fertilizer particles are cooled through cooling air, coating materials cannot be damaged, and the slow release effect of finished products is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of fertilizer production, and in particular relates to a slow-release fertilizer coating production cooling device. 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.

[0003] In the production process of coated slow-release fertilizers, the heated coating material needs to be sprayed on the surface of the fertilizer particles to form a coating, and it needs to be cooled after the spraying is completed.

[0004] The finished product cooling of traditional slow-release fertilizer coating production lines generally adopts rotary drum cooling, which has the advantages of simple structure and convenient use. However, the fertilizer particles tumble violently in the drum, which will damage the newly wrapped coating material and affect the slow-release effect of the finished product. Utility Model Content

[0005] In view of the defects or shortcomings in the prior art, the utility model provides a slow-release fertilizer coating production cooling device, which cools the fertilizer particles by cooling air without damaging the coating material, thereby ensuring the slow-release effect of the finished product.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An embodiment of the utility model provides a cooling device for the production of slow-release fertilizer coatings, including a cooler body, a cavity is arranged inside the cooler body, a plurality of cooling fins are vertically arranged inside the cooler body, the plurality of cooling fins are evenly distributed in two layers, a plurality of pressure-reducing air outlets are opened on the outer wall of the cooling fins, a plurality of air inlets are opened on the outer wall of the cooler body, and the plurality of air inlets are connected to the two layers of cooling fins through pipes.

[0008] Furthermore, a feed port is provided at the top of the cooler body, and a discharge port is provided at the bottom of the cooler body.

[0009] Furthermore, the cooling fin is a plate-like structure, and its interior is hollow.

[0010] Furthermore, the cooling fins are fixedly connected to the inner wall of the cooler body via a fixing bracket.

[0011] Furthermore, there are two air inlets, and the two air inlets are respectively arranged corresponding to the two layers of cooling fins.

[0012] Furthermore, an exhaust port is provided at the top of the cooler body, and a first circulation fan is provided at the exhaust port.

[0013] Further, the air inlets are all connected to a thermostat through pipes, and the cooling air enters the air inlets after passing through the thermostat.

[0014] Further, a second circulation fan is also provided on the pipe between the thermostat and the air inlet for sending the cooling air into the main body of the cooler.

[0015] Further, the bottom of the main body of the cooler is of an inverted conical structure, the discharge port is arranged at the bottom end of the inverted conical structure, and a plurality of vibrators are arranged on the outer wall of the bottom of the main body of the cooler.

[0016] Further, a conveying device is arranged below the main body of the cooler, and the fertilizer particles fall into the conveying device from the discharge port at the bottom of the main body of the cooler.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. By arranging multiple cooling fins in the main body of the cooler, the cooling fins are communicated with the air inlets, and a plurality of low-pressure air outlets are opened on the cooling fins. When the fertilizer particles enter the inside of the main body of the cooler from the top of the main body of the cooler, they can contact the cooling air discharged from the cooling fins, thereby cooling the fertilizer particles. The just-wrapped coating material will not be damaged during the cooling process, ensuring the slow-release effect of the finished product.

[0019] 2. The air inlets of the present utility model are connected to the thermostat through pipes, and the temperature of the cooling air is adjusted according to the ambient temperature, so as to provide cooling air with a stable temperature for the fertilizer particles, ensure stable cooling, and avoid coating defects caused by sudden cooling or insufficient cooling of the fertilizer particles.

[0020] 3. A vibrator is arranged at the bottom of the main body of the cooler of the present utility model. The vibrator is periodically turned on to vibrate the bottom of the main body of the cooler, thereby preventing the fertilizer particles from caking and blocking the discharge port. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the cooling device in the embodiment of the present utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the cooling fins in the embodiment of the present utility model;

[0023] Among them, 1. Main body of the cooler; 2. Feed inlet; 3. Discharge port; 4. Cooling fins; 5. Pressure-reducing air outlet; 6. Conveying device; 7. Air inlet; 8. Air outlet; 9. First circulation fan; 10. Thermostat; 11. Second circulation fan; 12. Vibrator. Detailed Embodiment

[0024] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] A typical implementation manner of the present utility model is as Figure 1 shown. A cooling device for slow-release fertilizer coating production includes a cooler main body 1. A cavity is provided inside the cooler main body 1. A feed inlet 2 is provided at the top of the cooler main body 1. Fertilizer particles enter the inside of the cooler main body 1 from the feed inlet 2 for cooling. A discharge outlet 3 is provided at the bottom of the cooler main body 1. The cooled fertilizer particles are discharged from the discharge outlet 3.

[0026] A plurality of cooling fins 4 are vertically arranged inside the cooler main body 1. The plurality of cooling fins 4 are evenly distributed in upper and lower two layers and are fixedly connected to the inner wall of the cooler main body 1 through fixing brackets. As Figure 2 shown, the cooling fin 4 is of a plate-like structure with a hollow interior. A plurality of pressure-reducing air outlets 5 are provided on the outer wall of the cooling fin 4. Two air inlets 7 are provided on the outer wall of the cooler main body 1. The two air inlets 7 are respectively arranged corresponding to the upper and lower two layers of cooling fins 4 and are respectively connected to the upper and lower two layers of cooling fins 4 through pipelines.

[0027] The cooling fins 4 are evenly and orderly arranged in upper and lower two layers, with uniform air outlet, so that the cooling effect difference in each area inside the cooler main body 1 is small, ensuring the overall cooling effect.

[0028] The cooling air enters the cooler main body 1 from the air inlet 7, enters the inside of the cooling fin 4 through the pipeline, and enters the internal cavity of the cooler main body 1 from the pressure-reducing air outlets 5 on the outer wall of the cooling fin 4, and contacts the fertilizer particles located in the internal cavity of the cooler main body 1. At this time, the whole inside of the cooler main body 1 is in a full mixing state of air and fertilizer particles to cool the fertilizer particles. The fertilizer particles enter from the feed inlet 2 at the top of the cooler main body 1 and are discharged from the discharge outlet 3 at the bottom of the cooler main body 1, so that the fertilizer particles are cooled throughout the whole process from top to bottom inside the cooler main body 1, ensuring the cooling effect of the fertilizer particles.

[0029] A discharge port 8 is also provided at the top of the cooler main body 1. A first circulation fan 9 is provided at the discharge port 8. After the cooling air entering the inside of the cooler main body 1 exchanges heat with the fertilizer particles, it is discharged from the discharge port 8 through the first circulation fan 9, realizing the rapid circulation of the cooling air inside the cooler main body 1 and improving the cooling efficiency of the fertilizer particles.

[0030] Both of the two air inlets 7 are connected to a temperature controller 10 through pipelines. The cooling air enters the air inlet 7 after passing through the temperature controller 10. In the annual seasonal changes, the temperature controller 10 will adjust the temperature of the cooling air according to the ambient temperature, thereby avoiding the coating defects caused by the sudden cooling or insufficient cooling of the fertilizer particles. A second circulation fan 11 is also provided on the pipeline between the temperature controller 10 and the air inlet 7, which can send the cooling air into the inside of the cooler main body 1.

[0031] The thermostat 10, like an air conditioning system, adjusts the air temperature according to environmental changes, keeping the air temperature constant regardless of seasonal variations. This is prior art and will not be described in detail here.

[0032] The bottom of the cooler body 1 is of an inverted conical structure, and the discharge port 3 is arranged at the bottom end of the inverted conical structure. A plurality of vibrators 12 are arranged on the outer wall of the bottom of the cooler body 1. The vibrators 12 are periodically turned on to vibrate the bottom of the cooler body 1 to prevent the fertilizer particles from caking and blocking the discharge port 3.

[0033] A conveying device 6 is arranged below the cooler body 1. The fertilizer particles fall from the discharge port 3 at the bottom of the cooler body 1 into the conveying device 6 and are conveyed to the next process by the conveying device 6.

[0034] Working principle

[0035] During use, first turn on the thermostat. The thermostat adjusts the temperature of the cooling air according to the ambient temperature, thereby providing cooling air with a stable temperature for the fertilizer particles to ensure stable cooling. Turn on the first circulation fan to send the cooling air into the cooler body. Turn on the second circulation fan to evacuate the cooling air inside the cooler body from the air outlet, realizing the circulation of the cooling air inside the cooler body.

[0036] Pour the fertilizer particles into the cooler body from the feed port at the top of the cooler body. During the falling process, the fertilizer particles come into contact with the cooling air. At this time, the inside of the cooler body is in a fully mixed state of the cooling air and the fertilizer particles, and the heat of the fertilizer particles is quickly carried away by the cooling air, improving the cooling efficiency of the fertilizer particles.

[0037] The cooled fertilizer particles are discharged from the discharge port and fall onto the conveying device to be conveyed to the next process. During this process, the vibrator at the bottom of the cooler body will periodically vibrate the bottom of the cooler body to prevent the fertilizer particles from caking and blocking the discharge port.

[0038] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cooling device for the production of coated controlled-release fertilizers, characterized in that, It includes a cooler body with a cavity inside. A plurality of cooling fins are vertically arranged inside the cooler body and are evenly distributed in upper and lower two layers. A plurality of pressure relief air outlets are formed on the outer wall of the cooling fins. A plurality of air inlets are formed on the outer wall of the cooler body, and the plurality of air inlets are connected to the two layers of cooling fins through pipelines.

2. The cooling device for the production of the slow-release fertilizer coating according to claim 1, characterized in that, A feed inlet is arranged at the top of the cooler body, and a discharge outlet is arranged at the bottom of the cooler body.

3. The cooling device for the production of the slow-release fertilizer coating according to claim 1, characterized in that, The cooling fins are of plate-like structure and are hollow inside.

4. The cooling device for the production of the slow-release fertilizer coating according to claim 1, characterized in that, The cooling fins are fixedly connected to the inner wall of the cooler body through fixing brackets.

5. A cooling device for the production of a slow-release fertilizer coating according to claim 1, characterized in that, There are two air inlets, and the two air inlets are respectively arranged corresponding to the two layers of cooling fins.

6. The cooling device for the production of slow and controlled release fertilizer coating according to claim 1, characterized in that, A ventilation outlet is also arranged at the top of the cooler body, and a first circulation fan is arranged at the ventilation outlet.

7. The cooling device for the production of the slow-release fertilizer coating according to claim 1, wherein, The air inlets are all connected to a temperature controller through pipelines, and the cooling air enters the air inlets after passing through the temperature controller.

8. A cooling device for the production of slow-release fertilizer coatings according to claim 7, characterized in that, A second circulation fan is also arranged on the pipeline between the temperature controller and the air inlets for sending the cooling air into the interior of the cooler body.

9. The cooling device for the production of the slow-release fertilizer coating according to claim 1, characterized in that, The bottom of the cooler body is of an inverted conical structure, the discharge outlet is arranged at the bottom end of the inverted conical structure, and a plurality of vibrators are arranged on the outer wall of the bottom of the cooler body.

10. A cooling device for the production of a slow-release fertilizer coating according to claim 1, characterized in that, A conveying device is arranged below the cooler body, and fertilizer particles fall from the discharge outlet at the bottom of the cooler body into the conveying device.

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