Dryer for fertilizer production

Abstract

The utility model relates to the technical field of fertilizer production, and discloses a drying machine for fertilizer production, which comprises a drying barrel, a discharge port is arranged at the lower end of the drying barrel, a metal net barrel is fixedly connected between the upper wall and the lower wall in the drying barrel, and a plurality of spherical metal net plates are fixedly connected onto the metal net barrel. A connecting pipe is fixedly connected to the middle of the spherical metal net plate, two sealing metal net plates are rotationally connected to the lower end of the connecting pipe, semicircular holes are formed in the two sealing metal net plates, a control mechanism used for opening or pipe wall sealing metal net plates is installed on the drying barrel and the sealing metal net plates, and a plurality of feeding pipes are installed on the drying barrel. The feeding pipe is arranged in the metal net barrel in a penetrating mode, the bottom of the drying barrel is fixedly connected with an air inlet pipe, the front end of the air inlet pipe is fixedly connected with an air heater, and the drying barrel is fixedly connected with a trowelling and stirring assembly. The granular fertilizer drying device can perform layered drying on granular fertilizer without stirring, so that the granular fertilizer is prevented from being broken, and the condition and the quality of the granular fertilizer are ensured.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer production technology, specifically a dryer for fertilizer production. Background Technology

[0002] With the acceleration of agricultural modernization, the demand for fertilizers is increasing, and higher requirements are being placed on fertilizer quality. After fertilizer production, it needs to be dried, as the moisture content of the fertilizer directly affects its quality and storage stability.

[0003] Patent CN213873588U discloses a moisture-proof dryer for fertilizer production, specifically related to the fertilizer production field. It includes a workbench with hot air blowers fixedly installed on both sides of the top of the workbench. A rotating hot air mechanism is fixedly connected to one side of each hot air blower. A drying chamber is fixedly installed on the top of the workbench, with inlets on both sides of the top of the drying chamber. A drive motor is fixedly installed on the top of the inner cavity of the drying chamber. In this design, the moisture-proof dryer utilizes a multi-directional stirring mechanism to comprehensively stir the fertilizer inside the drying chamber, preventing clumping and uneven drying. Multi-directional stirring is achieved through the cooperation of horizontal and vertical stirring rods and their internal micro-motors. The micro-motors drive the vertical stirring rods to rotate on the outer surface of the horizontal stirring rods. The numerous micro-motors ensure more uniform stirring and improve the drying effect of the equipment.

[0004] However, the above technology still has the following problems:

[0005] Fertilizer granules produced by roller extrusion granulators have a high moisture content. Drying methods such as drum drying keep the granules in a rolling or moving state, which can easily cause them to break apart, thus affecting the appearance and quality of the fertilizer. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a fertilizer production dryer that can dry fertilizer in layers and allows for arbitrary control of the drying time, thereby improving the drying effect.

[0007] This utility model provides the following technical solution: a dryer for fertilizer production, including a drying drum, a discharge port at the lower end of the drying drum, a metal mesh drum fixedly connected between the upper and lower walls of the inner wall of the drying drum, a plurality of spherical metal mesh plates fixedly connected to the metal mesh drum, a connecting pipe fixedly connected to the middle part of the spherical metal mesh plates, two sealing metal mesh plates rotatably connected to the lower end of the connecting pipe, each of the two sealing metal mesh plates having a semi-circular hole, a control mechanism for opening or sealing the metal mesh plates is installed on the drying drum and the sealing metal mesh plates, a plurality of feed pipes are installed on the drying drum, the feed pipes pass through the inside of the metal mesh drum, an air inlet pipe is fixedly connected to the bottom of the drying drum, the front end of the air inlet pipe is fixedly connected to a hot air blower, an air outlet is installed at the upper end of the drying drum, and a leveling and stirring assembly is fixedly connected to the drying drum.

[0008] Furthermore, the spherical metal mesh plate is part of a sphere, and the aperture of the spherical metal mesh plate is small, so as not to affect the flow of materials.

[0009] Furthermore, the control mechanism includes a sliding block fixedly connected to the sealing metal mesh plate, a sliding rod slidably connected to the sliding block, the sliding rod being slidably connected to the drying drum, and a limit plate fixedly connected to the sliding rod.

[0010] Furthermore, a U-shaped plate is fixedly connected to the sealing metal mesh plate.

[0011] Furthermore, the smoothing and stirring assembly includes a driver fixedly connected to the drying drum, with a rotating shaft fixedly connected to the output end of the driver, and several scrapers fixedly connected to the rotating shaft.

[0012] Furthermore, the driver is a variable frequency speed control motor or a continuously variable speed motor.

[0013] Furthermore, an arc-shaped sealing block is fixedly connected to the semi-circular hole on the sealing metal mesh plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This type of fertilizer production dryer, by setting up multiple drying zones inside the drying drum, granular fertilizer is dried in layers to reduce the thickness of the drying process and improve the drying effect. Furthermore, during the drying process, there is no need to stir the granular fertilizer for a long time to keep it moving, thereby reducing the possibility of the granular fertilizer breaking. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0017] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention;

[0018] Figure 3 This is a three-dimensional structural diagram of the internal part of the drying drum of this utility model.

[0019] In the diagram: 1. Drying drum; 2. Discharge port; 3. Metal mesh drum; 4. Spherical metal mesh plate; 5. Connecting pipe; 6. Sealing metal mesh plate; 7. Feed pipe; 8. Air inlet pipe; 9. Hot air blower; 10. Sliding block; 11. Sliding rod; 12. Limiting plate; 13. U-shaped plate; 14. Driver; 15. Rotating shaft; 16. Scraper; 17. Arc-shaped sealing block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1 to 3 A fertilizer production dryer includes a drying drum 1, a discharge port 2 at the lower end of the drying drum 1, a metal mesh drum 3 fixedly connected between the upper and lower walls of the drying drum 1, a plurality of spherical metal mesh plates 4 fixedly connected to the metal mesh drum 3, a connecting pipe 5 fixedly connected to the middle part of the spherical metal mesh plates 4, two sealing metal mesh plates 6 rotatably connected to the lower end of the connecting pipe 5, each of the two sealing metal mesh plates 6 having a semi-circular hole, a control mechanism for opening or sealing the metal mesh plates 6 installed on the drying drum 1 and the sealing metal mesh plates 6, a plurality of feed pipes 7 installed on the drying drum 1, the feed pipes 7 passing through the inside of the metal mesh drum 3, an air inlet pipe 8 fixedly connected to the bottom of the drying drum 1, the front end of the air inlet pipe 8 fixedly connected to a hot air blower 9, an air outlet installed at the upper end of the drying drum 1, and a smoothing component fixedly connected to the drying drum 1.

[0022] The fertilizer production dryer in this utility model is structurally similar to existing moisture-proof dryers for fertilizer production. For example, patent CN213873588U discloses a moisture-proof dryer for fertilizer production. The main improvement of this utility model is that by setting the interior of the drying drum 1 into multiple drying zones, the granular fertilizer is dried in layers, reducing the drying thickness and thus improving the drying effect. Furthermore, during the drying process, there is no need to stir the granular fertilizer for a long time to keep it moving, thereby reducing the possibility of the granular fertilizer breaking. Figures 1 to 3As shown, in the fertilizer production dryer of this utility model, granular fertilizer is first fed into the spherical metal mesh plate 4 inside the drying drum 1 through the feed pipe 7. During this process, the driver 14 is driven, causing the rotating shaft 15 to rotate, which in turn causes the scraper 16 to rotate. The scraper 16 pushes the granular fertilizer, allowing it to be evenly distributed on the spherical metal mesh plate 4, and its upper end is also smoothed, thereby controlling the thickness of the granular fertilizer layer. After the granular fertilizer is added, hot air is input into the drying drum 1 through the hot air blower 9, thereby heating the inside of the drying drum 1 and drying the granular fertilizer. Furthermore, the metal mesh drum 3, the spherical metal mesh plate 4, and the sealing metal mesh plate 6 do not affect the flow of hot air, allowing the hot air to reach the sides of the granular material layer. Both the top and bottom surfaces can be dried. After the granular fertilizer is dried, the sliding rods 11 connected to both sides of the drying drum 1 are pulled outwards in order from bottom to top until the front end of the sliding rod 11 disengages from the lower surface of the sealing metal mesh plate 6. Under the action of the granular material and its own gravity, the sealing metal mesh plate 6 will rotate downwards, thereby opening the lower end of the connecting pipe 5, so that the granular material can flow downwards, and the granular fertilizer is discharged layer by layer from bottom to top from the discharge port 2 at the lower end of the drying drum 1. After the granular fertilizer is discharged, the sliding rods 11 are pushed inwards in order from top to bottom. The sliding rods 11 exert an upward thrust on the sealing metal mesh plate 6, causing the sealing metal mesh plate 6 to rotate upwards and cover the lower end of the connecting pipe 5, thereby starting the next drying operation.

[0023] like Figure 2 or Figure 3 As shown, the spherical metal mesh plate 4 is part of a sphere, and the aperture of the spherical metal mesh plate 4 is small, so it does not affect the flow of materials.

[0024] Specifically, after the sealed metal mesh plate 6 is opened, the granular fertilizer can roll on the spherical metal mesh plate 4, thereby discharging the granular fertilizer from the spherical metal mesh plate 4.

[0025] like Figure 2 As shown, the control mechanism includes a sliding block 10 fixedly connected to the sealing metal mesh plate 6, a sliding rod 11 slidably connected to the sliding block 10, the sliding rod 11 being slidably connected to the drying drum 1, and a limit plate 12 fixedly connected to the sliding rod 11.

[0026] Specifically, following the order from bottom to top, the sliding rods 11 connected to both sides of the drying drum 1 are pulled outwards until the front end of the sliding rod 11 disengages from the lower surface of the sealing metal mesh plate 6. Under the action of the granular material and its own gravity, the sealing metal mesh plate 6 will rotate downwards, thereby opening the lower end of the connecting pipe 5, allowing the granular material to flow downwards. This allows the granular fertilizer to be discharged layer by layer from bottom to top from the discharge port 2 at the lower end of the drying drum 1. After the granular fertilizer is discharged, the sliding rods 11 are pushed inwards in the order from top to bottom. The sliding rods 11 exert an upward thrust on the sealing metal mesh plate 6, causing the sealing metal mesh plate 6 to rotate upwards and cover the lower end of the connecting pipe 5, thus enabling the next drying operation. The limiting plate 12 can prevent the sliding rods 11 from sliding into the interior of the drying drum 1.

[0027] like Figure 3 As shown, a U-shaped plate 13 is fixedly connected to the sealing metal mesh plate 6.

[0028] Specifically, the surface of the sealing metal mesh plate 6 is relatively rough, and there will be resistance when the slide rod 11 is pushed inward. The U-shaped plate 13 allows the front end of the slide rod 11 to contact the smooth surface, thereby improving the smoothness of its movement.

[0029] like Figure 2 As shown, the smoothing assembly includes a driver 14 fixedly connected to the drying drum 1, a rotating shaft 15 fixedly connected to the output end of the driver 14, and a plurality of scrapers 16 fixedly connected to the rotating shaft 15.

[0030] Specifically, granular fertilizer is fed into the spherical metal mesh plate 4 inside the drying barrel 1 through the feed pipe 7. During this process, the driver 14 is driven, which causes the rotating shaft 15 to rotate, thereby causing the scraper 16 to rotate. The scraper 16 pushes the granular fertilizer, so that the granular fertilizer can be evenly distributed on the spherical metal mesh plate 4, and its upper end will also be smoothed, thereby controlling the layer thickness of the granular fertilizer.

[0031] like Figure 1 or Figure 2 As shown, the driver 14 is a variable frequency speed control motor or a continuously variable speed motor.

[0032] Specifically, the drive 14 can control the rotation speed of the scraper 16, thereby adjusting the speed of the smoothing operation of the accumulated granular fertilizer.

[0033] like Figure 3 As shown, an arc-shaped sealing block 17 is fixedly connected to the semi-circular hole on the sealing metal mesh plate 6.

[0034] Specifically, the arc-shaped sealing block 17 does not affect the rotation of the rotating shaft 15, and can also reduce the chance of granular fertilizer getting stuck between the semi-circular hole and the rotating shaft 15.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fertilizer production dryer, comprising a drying drum (1), characterized in that: The lower end of the drying barrel (1) is provided with a discharge port (2). A metal mesh barrel (3) is fixedly connected between the upper and lower walls of the drying barrel (1). Several spherical metal mesh plates (4) are fixedly connected to the metal mesh barrel (3). A connecting pipe (5) is fixedly connected to the middle part of the spherical metal mesh plate (4). Two sealing metal mesh plates (6) are rotatably connected to the lower end of the connecting pipe (5). Semi-circular holes are opened on both sealing metal mesh plates (6). A control mechanism for opening or sealing the metal mesh plate (6) is installed on the drying barrel (1) and the sealing metal mesh plate (6). Several feed pipes (7) are installed on the drying barrel (1). The feed pipes (7) pass through the inside of the metal mesh barrel (3). An air inlet pipe (8) is fixedly connected to the bottom of the drying barrel (1). The front end of the air inlet pipe (8) is fixedly connected to the hot air blower (9). An air outlet is installed at the upper end of the drying barrel (1). A smoothing and stirring assembly is fixedly connected to the drying barrel (1).

2. The fertilizer production dryer according to claim 1, characterized in that: The spherical metal mesh plate (4) is part of a sphere, and the aperture of the spherical metal mesh plate (4) is small, so it does not affect the flow of materials.

3. The fertilizer production dryer according to claim 1, characterized in that: The control mechanism includes a sliding block (10) fixedly connected to the sealing metal mesh plate (6), a sliding rod (11) slidably connected to the sliding block (10), the sliding rod (11) slidably connected to the drying drum (1), and a limit plate (12) fixedly connected to the sliding rod (11).

4. A fertilizer production dryer according to claim 3, characterized in that: A U-shaped plate (13) is fixedly connected to the sealed metal mesh plate (6).

5. A fertilizer production dryer according to claim 1, characterized in that: The smoothing and stirring assembly includes a driver (14) fixedly connected to the drying drum (1), and a rotating shaft (15) fixedly connected to the output end of the driver (14). Several scrapers (16) are fixedly connected to the rotating shaft (15).

6. A fertilizer production dryer according to claim 5, characterized in that: The driver (14) is a variable frequency speed control motor or a continuously variable speed motor.

7. A fertilizer production dryer according to claim 4, characterized in that: An arc-shaped sealing block (17) is fixedly connected to the semi-circular hole on the sealing metal mesh plate (6).

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