Automatic film coating device for compound fertilizer production

Abstract

The utility model provides an automatic coating device for compound fertilizer production, which comprises a horizontal roller, a fertilizer feeding mechanism, an anti-caking powder feeding mechanism and an anti-caking paste feeding mechanism, one end of the horizontal roller is provided with an input port, the other end of the horizontal roller is provided with an output port, and the fertilizer feeding mechanism comprises a fertilizer bin, a conveyor belt and a guide slope; the anti-caking powder feeding mechanism comprises a spiral feeder and an anti-caking powder hopper mounted on a feeding hole of the spiral feeder; the anti-caking paste supply mechanism comprises a heating tank, a liquid supply pipe and a liquid supply pump arranged on the liquid supply pipe, the liquid inlet end of the liquid supply pipe is communicated with a liquid outlet of the heating tank, and the liquid outlet end of the liquid supply pipe extends to the position below the discharging end of the spiral feeder. The automatic film coating device for compound fertilizer production has the advantages of being scientific in design, uniform in feeding, good in film coating effect and high in practicability.

Description

Technical Field

[0001] The utility model relates to a fertilizer production device, specifically, an automatic film coating device for compound fertilizer production. Background Art

[0002] The granulated compound fertilizer is in granular form. After drying and cooling, it is sticky and has a rough surface, and it is easy to cake during transportation and storage. To solve this problem, an anti-caking paste and anti-caking powder need to be applied on the surface of the particulate fertilizer, which is also called the film coating process. The main structure of the existing compound fertilizer film coating machine is a horizontal drum. During film coating, the materials to be mixed are fed into the horizontal drum from one end. Through the rolling of the horizontal drum, the anti-caking paste and anti-caking powder are gradually wrapped on the surface of the particulate fertilizer and finally discharged from the other end.

[0003] In the prior art, generally, the granular fertilizer, anti-caking paste, and anti-caking powder are separately fed into the horizontal drum, and the feeding positions of the respective raw materials in the drum are arranged at intervals. Through the rolling of the drum, the film coating is gradually completed. However, the three raw materials are fed independently, and uneven feeding may occur at different times. Moreover, the three do not mix immediately at the feeding place, and when the materials fall to the feeding place, they will also roll along with the rolling of the drum, which are likely to cause incomplete wrapping or too thick film coating, affecting the final film coating effect.

[0004] To solve the above problems, people have been seeking an ideal technical solution. Summary of the Invention

[0005] The purpose of the utility model is to aim at the deficiencies of the prior art, and thus provide an automatic film coating device for compound fertilizer production with scientific design, uniform feeding, good film coating effect, and strong practicability.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: an automatic film coating device for compound fertilizer production, including a horizontal drum, a fertilizer feeding mechanism, an anti-caking powder feeding mechanism, and an anti-caking paste feeding mechanism. An input port is arranged at one end of the horizontal drum, and an output port is arranged at the other end. The fertilizer feeding mechanism includes a fertilizer bin, a conveyor belt, and a guiding slope. The fertilizer bin feeds materials onto the conveyor belt, and the guiding slope is connected to the output end of the conveyor belt. The anti-caking powder feeding mechanism includes a screw feeder and an anti-caking powder hopper installed at the feeding port of the screw feeder. The discharging end of the screw feeder extends into the input port, and the bottom end of the guiding slope is connected to the discharging end of the screw feeder. The anti-caking paste feeding mechanism includes a heating tank, a liquid supply pipe, and a liquid supply pump arranged on the liquid supply pipe. The liquid inlet end of the liquid supply pipe is communicated with the liquid outlet of the heating tank, and the liquid outlet end of the liquid supply pipe extends below the discharging end of the screw feeder.

[0007] Based on the above, a flat powder outlet is provided at the discharge end of the spiral feeder, a flat liquid outlet is provided at the liquid discharge end of the liquid supply pipe, the flat powder outlet is pressed on top of the flat liquid outlet, and the bottom end of the material guiding slope is pressed on top of the flat powder outlet.

[0008] Based on the above, the flat powder outlet is arranged in the horizontal direction, and the flat liquid outlet is arranged to incline obliquely downward.

[0009] Based on the above, a square blanking port is provided at the bottom of the fertilizer bin, the bottom of the square blanking port is open, and a material carrying notch is formed on the side wall of the square blanking port facing the conveying direction of the conveyor belt.

[0010] Based on the above, it further includes a control cabinet, and the control cabinet controls the transmission speed of the conveyor belt, the feeding speed of the spiral feeder, and the liquid supply speed of the liquid supply pump.

[0011] The utility model has substantial features and progress compared with the prior art. Specifically, in the utility model, fertilizer particles are fed into the material guiding slope through the conveyor belt, anti-caking powder is fed into the horizontal drum through the spiral feeder, after the anti-caking paste is melted by the heating tank, the anti-caking paste solution is fed into the horizontal drum by the liquid supply pump. By controlling the feeding speeds of each, the ratio can be ensured to be stable. At the same time, the falling positions of the three are the same, and they can be immediately mixed at the falling position, so as to ensure uniform film coating when rolling in the horizontal drum. It has the advantages of scientific design, uniform feeding, good film coating effect, and strong practicability.

[0012] Furthermore, the settings of the flat powder outlet and the flat liquid outlet can thin the anti-caking powder and the anti-caking paste, so that when the granular fertilizer falls, it can be mixed more evenly with the two; setting the flat liquid outlet to incline obliquely downward can prevent the outlet from being blocked by powder and ensure stable feeding; the square blanking port directly presses the fertilizer particles on the conveyor belt, and by using the frictional force, the fertilizer particles pass through the material carrying notch and are carried out, realizing uniform feeding of the fertilizer particles; the setting of the control cabinet facilitates the control of the conveyor belt, the spiral feeder, and the liquid supply pump. Description of the Drawings

[0013] Figure 1 is a schematic side structure view of the automatic film coating device for compound fertilizer production in the utility model.

[0014] Figure 2 is a schematic structure view at the input port of the horizontal drum in the utility model.

[0015] Figure 3 is a schematic feeding structure view of the input port in the utility model.

[0016] Figure 4 It is a front structural schematic diagram of the square blanking port in the present utility model.

[0017] In the figure: 1. Horizontal drum; 2. Fertilizer bin; 3. Conveyor belt; 4. Material guiding slope; 5. Square blanking port; 6. Screw feeder; 7. Anti-caking powder hopper; 8. Heating tank; 9. Liquid supply pipe; 10. Liquid supply pump; 11. Flat powder outlet; 12. Flat liquid outlet; 51. Material-carrying notch. Specific embodiments

[0018] Next, through specific embodiments, the technical solutions of the present utility model will be further described in detail. Embodiment 1

[0019] As Figures 1-4 shown, an automatic coating device for compound fertilizer production includes a horizontal drum 1, a fertilizer feeding mechanism, an anti-caking powder feeding mechanism, and an anti-caking paste feeding mechanism. An input port is provided at one end of the horizontal drum 1, and an output port is provided at the other end; the fertilizer feeding mechanism includes a fertilizer bin 2, a conveyor belt 3, and a material guiding slope 4. The fertilizer bin 2 feeds materials onto the conveyor belt 3, and the material guiding slope 4 is connected to the output end of the conveyor belt 3. Specifically, a square blanking port 5 is provided at the bottom of the fertilizer bin 2, the bottom of the square blanking port 5 is open, and a material-carrying notch 51 is provided on the side wall of the square blanking port 5 facing the conveying direction of the conveyor belt 3. In this way, the fertilizer in the fertilizer bin 2 is directly pressed on the conveyor belt 3, and under the action of friction, the conveyor belt 3 takes out the fertilizer from the material-carrying notch 51, and uniform feeding can be realized.

[0020] The anti-caking powder feeding mechanism includes a screw feeder 6 and an anti-caking powder hopper 7 installed at the feeding port of the screw feeder 6. The discharging end of the screw feeder 6 extends into the input port, and the bottom end of the material guiding slope 4 is connected to the discharging end of the screw feeder 6; the anti-caking paste feeding mechanism includes a heating tank 8, a liquid supply pipe 9, and a liquid supply pump 10 provided on the liquid supply pipe 9. The heating tank 8 is used to heat and dissolve the anti-caking paste. The liquid inlet end of the liquid supply pipe 9 is communicated with the liquid outlet of the heating tank 8, and the liquid outlet end of the liquid supply pipe 9 extends below the discharging end of the screw feeder 6; with such a setting, the landing points of fertilizer particles, anti-caking powder, and anti-caking paste coincide, which is beneficial to the mixing of the three at the landing point position.

[0021] To make the material mixing more uniform, a flat powder outlet 11 is provided at the discharge end of the spiral feeder 6, and a flat liquid outlet 12 is provided at the liquid discharge end of the liquid supply pipe 9. The flat powder outlet 11 is pressed on top of the flat liquid outlet 12, and the bottom end of the material guiding slope 4 is pressed on top of the flat powder outlet 11. The flat powder outlet 11 and the flat liquid outlet 12 can spread the anti-caking powder and anti-caking paste thinly, so that when the granular fertilizer falls, it can be mixed more evenly with the two. Among them, the flat powder outlet 11 is arranged in the horizontal direction, and the flat liquid outlet 11 is arranged obliquely downward, so as to prevent the powder from sticking to the flat liquid outlet 12 and ensure stable feeding.

[0022] Working principle:

[0023] Pour the granular fertilizer into the fertilizer bin 2, pour the anti-caking powder into the anti-caking powder hopper 7, and pour the anti-caking paste into the heating tank 6. Adjust the feeding speeds of the conveyor belt 3, the screw conveyor 6 and the liquid supply pump 10 to ensure a stable ratio. The conveyor belt 3 conveys the fertilizer particles to the material guiding slope 4, the spiral feeder 6 feeds the anti-caking powder into the horizontal drum 1, and after the heating tank 8 melts the anti-caking paste, the liquid supply pump 10 inputs the anti-caking paste solution into the horizontal drum 1. At the same time, the three discharging positions are the same, and they can be mixed immediately at the discharging place, so as to ensure uniform film coating when rolling in the horizontal drum 1. Embodiment 2

[0024] The difference between this embodiment and Embodiment 1 is that the automatic film coating device for compound fertilizer production further includes a control cabinet, and the control cabinet controls the transmission speed of the conveyor belt 3, the feeding speed of the spiral feeder 6 and the liquid supply speed of the liquid supply pump 10, which is convenient for centralized control of the whole set of equipment.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: still can modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered by the scope of the technical solutions claimed by the present invention.

Claims

1. An automatic film coating device for compound fertilizer production, including a horizontal drum, one end of the horizontal drum is provided with an input port and the other end is provided with an output port, characterized in that: It also includes a fertilizer feeding mechanism, an anti-caking powder feeding mechanism, and an anti-caking paste feeding mechanism. The fertilizer feeding mechanism includes a fertilizer bin, a conveyor belt, and a guiding slope. The fertilizer bin feeds materials onto the conveyor belt, and the guiding slope is connected to the output end of the conveyor belt. The anti-caking powder feeding mechanism includes a screw feeder and an anti-caking powder hopper installed at the feeding port of the screw feeder. The discharging end of the screw feeder extends into the input port, and the bottom end of the guiding slope is connected to the discharging end of the screw feeder. The anti-caking paste feeding mechanism includes a heating tank, a liquid supply pipe, and a liquid supply pump arranged on the liquid supply pipe. The liquid inlet end of the liquid supply pipe is communicated with the liquid outlet of the heating tank, and the liquid outlet end of the liquid supply pipe extends below the discharging end of the screw feeder.

2. The automatic film coating device for compound fertilizer production according to claim 1, characterized in that: The discharging end of the screw feeder is provided with a flat powder outlet, and the liquid outlet end of the liquid supply pipe is provided with a flat liquid outlet. The flat powder outlet is pressed on the top of the flat liquid outlet, and the bottom end of the guiding slope is pressed on the top of the flat powder outlet.

3. The automatic film coating device for compound fertilizer production according to claim 2, wherein: The flat powder outlet is arranged in the horizontal direction, and the flat liquid outlet is arranged to incline obliquely downward.

4. The automatic film coating device for compound fertilizer production according to any one of claims 1-3, characterized in that: The bottom of the fertilizer bin is provided with a square discharging opening, the bottom of the square discharging opening is open, and a material carrying notch is formed on the side wall of the square discharging opening facing the conveying direction of the conveyor belt.

5. The automatic film coating device for compound fertilizer production according to claim 4, characterized in that: It also includes a control cabinet, and the control cabinet controls the transmission speed of the conveyor belt, the feeding speed of the screw feeder, and the liquid supply speed of the liquid supply pump.

Images