A fertilizer anti-caking storage bin with air cooling function

Abstract

The present invention discloses a fertilizer anti-caking storage silo with air cooling function, wherein a storage silo body is arranged on a supporting base frame, a discharge port is arranged at the bottom of the storage silo body, an air cooling pipe is coaxially arranged in the storage silo body through a bracket, and the height of the air cooling pipe is less than the height of the storage silo body, an air inlet pipe is arranged at the lower end of the air cooling pipe, the air inlet pipe passes through the storage silo body and is connected to an air source, and a bulk material cone cover with a pointed end upwards covering the top pipe opening of the air cooling pipe is arranged on the top of the storage silo body, a silo cover is arranged on the top of the storage silo body, a feed port is arranged at the center of the silo cover, and the bulk material cone cover is located directly below the feed port, with a gap between the two, and an exhaust port is arranged on any semicircular part of the silo cover. The present invention has a significant heat dissipation and cooling effect on fertilizer, effectively solving the problems of moisture absorption, agglomeration and pulverization in the traditional bulk heat dissipation process; the packaging process can avoid packaging quality problems caused by fertilizer particle crushing, greatly reducing production costs and losses, and being conducive to ensuring and improving product quality.

Description

Technical Field

[0001] The invention belongs to the technical field of fertilizer production and storage, and in particular relates to a fertilizer anti-caking storage bin with an air cooling function. Background Art

[0002] Most of the production processes of compound fertilizers in the industry include raw material mixing, granulation, drying, cooling and packaging. Since the fertilizer is packaged before it is cooled down, the packaging temperature is high, causing the moisture inside the fertilizer particles to evaporate and be trapped in the inner bag. When the temperature drops, water droplets are formed, which dissolve the fertilizer to form a solution. When the saturation concentration is reached, crystals will precipitate, bonding the fertilizer particles into clumps, forming large fertilizer blocks, which are commonly known as agglomerates.

[0003] To solve the problem of fertilizer agglomeration, a few companies adopt a production process of bulk cooling and shoveling packaging after producing finished fertilizer products. This allows the fertilizer to be fully cooled and the temperature during packaging is equivalent to the ambient temperature. However, this method requires the construction of a large-scale bulk warehouse, and the fertilizer will absorb moisture and become powdered during the stacking process. Moreover, when packaging, a shovel loader is required to shovel the bulk material into the silo, and then weigh and package it for storage. Since the bulk shoveling process can easily cause the fertilizer particles to be crushed, the powdered fertilizer in the packaging bag increases, causing quality problems, and increasing production costs and losses, which is not conducive to ensuring and improving product quality.

[0004] Therefore, developing a storage device suitable for heat dissipation and cooling of fertilizer is the key to solving the problem. Summary of the Invention

[0005] The invention provides a fertilizer anti-caking storage bin with air cooling function.

[0006] The present invention is achieved through the following technical solutions: a fertilizer anti-caking storage silo with air cooling function, including a supporting base frame, a storage silo body, and an air cooling pipe. The storage silo body is arranged on the supporting base frame, a discharge port is arranged at the bottom of the storage silo body, an air cooling pipe is coaxially arranged in the storage silo body through a bracket, and the height of the air cooling pipe is less than the height of the storage silo body. An air inlet pipe is provided at the lower end of the air cooling pipe, and the air inlet pipe passes through the storage silo body to connect to an air source. A bulk material cone cover covering the top pipe opening of the air cooling pipe is provided on the top of the air cooling pipe. The tip of the bulk material cone hood faces upward, a silo cover is provided on the top of the storage silo body, a feed port is provided at the center of the silo cover, the storage silo body, the air cooling main pipe, the bulk material cone hood and the feed port are coaxial, and the bulk material cone hood is located directly below the feed port, a gap between the two forms a material drop channel for feeding the material, and an exhaust port is provided on any semicircular portion of the silo cover; wherein, a plurality of air cooling branch pipe groups are provided from bottom to top on the outer wall of the air cooling main pipe, a plurality of partition plates are provided from bottom to top in the air cooling main pipe, and each partition plate is provided with a ventilation control plate.

[0007] Furthermore, there are at least three groups of air-cooling branch pipes, each of which includes at least two air-cooling branch pipes. The circumference of the air-cooling branch pipes is arranged on the outer wall of the air-cooling main pipe, and the angle β between each air-cooling branch pipe and the air-cooling main pipe is an acute angle.

[0008] Furthermore, the partition plate and the ventilation control plate are both arranged in a semicircular structure that matches the inner wall of the air-cooling main pipe. The partition plate is fixedly arranged on the inner wall of the air-cooling main pipe. The partition plate and the ventilation control plate are movably hinged. A control plate drive is arranged on the partition plate, and the control plate drive is movably hinged to the ventilation control plate through a curved rod.

[0009] Furthermore, the diameter of the air-cooling main pipe is not less than 120 cm, and the diameter of the air-cooling branch pipes of the air-cooling branch pipe group is 0.1 to 0.5 times the diameter of the air-cooling main pipe.

[0010] The beneficial effects of the present invention are as follows: the present invention has a compact structure, occupies a small area, saves land, has a significant heat dissipation and cooling effect on fertilizers, effectively solves the problems of moisture absorption, agglomeration and pulverization in the traditional bulk heat dissipation process, makes the finished fertilizer fully cooled, and significantly reduces the agglomeration rate; during packaging, the material is discharged smoothly and can be packaged without the aid of other equipment, solves the quality problem of fertilizer particles being crushed again during the packaging process, resulting in an increase in powdered fertilizer in the packaging bag, greatly reduces production costs and losses, and is conducive to ensuring and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention;

[0012] Figure 2 It is a structural schematic diagram of the storage silo in the present invention;

[0013] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of A;

[0014] Figure 4 This is a schematic structural diagram of the aggregate bin bottom in the present invention;

[0015] Numbers in the figure: 1 ~ supporting base, 2 ~ storage silo body, 3 ~ collecting silo bottom, 4 ~ discharge port, 5 ~ silo cover, 6 ~ feed port, 7 ~ exhaust port, 8 ~ air cooling main pipe, 9 ~ air inlet pipe, 10 ~ air cooling branch pipe group, 11 ~ air cooling branch pipe, 12 ~ bulk material cone cover, 13 ~ material dropping channel, 14 ~ partition plate, 15 ~ ventilation control panel, 16 ~ control panel drive, 17 ~ bent rod, 18 ~ ladder, 19 ~ temperature and humidity sensor, 20 ~ vibrator, 21 ~ hammer, 22 ~ support, 23 ~ auxiliary air duct, 24 ~ scattered air ring pipe, 25 ~ auxiliary branch pipe, 26 ~ cleaning hole, 27 ~ discharge screw, 28 ~ gas filter, 29 ~ solenoid valve, 30 ~ control valve. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the present invention, its specific implementation methods are described in detail below with reference to the accompanying drawings.

[0017] like Figures 1 to 4 The fertilizer anti-caking storage bin with air cooling function shown in the figure includes a fertilizer anti-caking storage bin with air cooling function, including a supporting base frame 1, a storage bin body 2, and an air cooling pipe 8. The storage bin body 2 is arranged on the supporting base frame 1, and a discharge port 4 is arranged at the bottom of the storage bin body 2. The air cooling pipe 8 is coaxially arranged in the storage bin body 2 through a bracket, and the height of the air cooling pipe 8 is less than the height of the storage bin body 2. The lower end of the air cooling pipe 8 is provided with an air inlet pipe 9, and the air inlet pipe 9 passes through the storage bin body 2 to connect to the air source. The top of the air cooling pipe 8 is provided with a bulk cone cover 12 covering its top pipe opening, and the tip of the bulk cone cover 12 faces upward, and the bulk The cone cover 12 can prevent the finished fertilizer from entering the air-cooling main pipe 8. A silo cover 5 is provided on the top of the storage silo body 2, and a feed port 6 is provided in the center of the silo cover 5. The storage silo body 2, the air-cooling main pipe 8, the bulk material cone cover 12, and the feed port 6 are coaxial, and the bulk material cone cover 12 is located directly below the feed port 6. A gap between the two is provided to form a drop channel 13 for feeding the material. An exhaust port 7 is provided on any semicircular portion of the silo cover 5; wherein, a plurality of air-cooling branch pipe groups 10 are provided from bottom to top on the outer wall of the air-cooling main pipe 8, and a plurality of partition plates 14 are provided from bottom to top in the air-cooling main pipe 8, and each partition plate 14 is provided with a ventilation control panel 15.

[0018] There are at least three groups of air cooling branch pipe groups 10, each of which includes at least two air cooling branch pipes 11. The air cooling branch pipes 11 are all arranged on the outer wall of the air cooling main pipe 8, and the angle β between each air cooling branch pipe 11 and the air cooling main pipe 8 is an acute angle.

[0019] The partition plate 14 and the ventilation control plate 15 are both arranged in a semicircular structure that matches the inner wall of the air-cooling main pipe 8. The partition plate 14 is fixedly arranged on the inner wall of the air-cooling main pipe 8. The partition plate 14 and the ventilation control plate 15 are movably hinged. A control plate drive 16 is provided on the partition plate 14. The control plate drive 16 is movably hinged to the ventilation control plate 15 through a curved rod 17. The ventilation control plate 15 controls the flow direction of the cold air while ensuring that the staff can pass smoothly in the air-cooling main pipe 8 without obstruction.

[0020] The diameter of the air-cooling main pipe 8 is not less than 120 cm, and the diameter of the air-cooling branch pipe 11 of the air-cooling branch pipe group 10 is 0.1 to 0.5 times the diameter of the air-cooling main pipe 8 .

[0021] The inner wall of the air cooling main pipe 8 on one side of the ventilation control panel 15 is provided with a ladder 18 for people to go up and down from bottom to top, and the outer wall of the air cooling main pipe 8 is provided with temperature and humidity sensors 19 at equal intervals from bottom to top.

[0022] Furthermore, the ladder 18 is a soft ladder, which is placed in the air-cooling main pipe 8 when in use and taken out and stored when not in use, or is welded from metal plates.

[0023] Several groups of rappers 20 are provided on the outer wall of the storage silo body 2 from bottom to top. There are at least three groups of rappers 20, and each group of rappers 20 includes at least two rappers 20. The rappers 20 are arranged on the outer wall of the storage silo body 2 through the circumference of the support 22 and are perpendicular to the outer wall of the storage silo body 2. The rappers 20 are cylinders or hydraulic cylinders, and a hammer 21 is provided at the piston end of the rapper 20.

[0024] At least three auxiliary air ducts 23 are provided on the circumference of the inner wall of the storage silo body 2. The lower end of each auxiliary air duct 23 is connected to the air inlet pipe 9 through the air dispersion ring pipe 24 and the solenoid valve 29, and the upper end is sealed. A number of downward-slanting auxiliary branch pipes 25 are provided on the outer wall of each auxiliary air duct 23 from bottom to top, and each auxiliary branch pipe 25 is on the same vertical line. The diameter of the auxiliary branch pipe 25 is 0.1 to 0.3 times the diameter of the auxiliary air duct 23. By arranging the auxiliary air duct 23 in conjunction with the air cooling main pipe 8, cold air is synchronously transported to the finished fertilizer product in the storage silo body 2 from both the inside and the outside, thereby improving the heat dissipation and cooling efficiency.

[0025] The bottom of the storage silo body 2 is provided with a collection silo bottom 3 with a conical structure with the tip downward. At least two cleaning holes 26 are provided on the conical wall of the collection silo bottom 3, and valves are provided on the cleaning holes 26. A discharge port 4 is provided at the tip of the collection silo bottom 3.

[0026] The bottom end of the discharge port 4 is coaxially provided with a discharge spiral 27 extending upward to the bottom end of the air cooling main pipe 8.

[0027] The exhaust port 7 is provided in an open structure, and a gas filter 28 communicating with the interior of the storage bin body 2 is provided in the exhaust port 7 .

[0028] Furthermore, the gas filter 28 is a bag dust collector, and the outer wall of the bag dust collector is sealed with the exhaust port 7. The sealed connection prevents unfiltered hot air from being discharged directly, ensuring the adequacy of the filtration. The bag dust collector filters the fertilizer powder carried in the hot air and retains it on the outer surface of the filter bag of the bag dust collector. The hot air enters the bag dust collector and is discharged from the bag dust collector, effectively solving the environmental and gas pollution problems caused by the fertilizer being carried out by the hot air. Finally, the bag dust collector is shaken, and the fertilizer powder attached to the surface of the filter bag automatically falls back into the storage bin 2.

[0029] Furthermore, a downwardly protruding arc or cone structure is provided at the bottom end of the air cooling main pipe 8, and a solenoid valve 29 is provided at the center of the arc or cone structure to discharge the finished fertilizer entering the air cooling main pipe 8 through the air cooling branch pipe 11 into the storage bin 2.

[0030] Furthermore, the control panel drive 16 is a pneumatic cylinder or a hydraulic cylinder.

[0031] Furthermore, the discharge port 4 is provided in an "L"-shaped structure, and a downward slope is provided on the bottom surface of the discharge port 4 to facilitate discharge, and a control valve 30 is provided at the outlet of the discharge port 4 .

[0032] Furthermore, the control device is a single chip microcomputer or a PLC programmable logic controller, and its signals are connected to the solenoid valve 29, the gas filter 28, the discharge screw 27, the rapper 20, the temperature and humidity sensor 19, and the control board drive 16.

[0033] The working mode of the present invention is as follows: the finished fertilizer products are transported to the feed port 6 by the conveying mechanism, and are evenly scattered from the drop channel 13 to the storage silo 2 under the guidance of the bulk cone cover 12. In the period before the finished fertilizer products are transported to storage, although the finished fertilizer products have a certain temperature, since the finished fertilizer products are less accumulated in the storage silo 2, the temperature and humidity sensor 19 in the middle and upper part detects that the storage silo 2 is at room temperature. The control board drive 16 controls the ventilation control panel 15 to close, blocking the rising channel of the cold air in the air-cooling main pipe 8. The air source then transports the cold air into the bottom layer of the air-cooling main pipe 8 through the air inlet pipe 9, and the cold air is guided to the finished fertilizer products accumulated on the bottom layer of the storage silo 2 through the air-cooling branch pipe group 10 on the bottom layer, thereby dissipating heat and cooling the finished fertilizer products on the bottom layer.

[0034] As the pile level of the finished fertilizer product continues to rise, the resistance of the air outlet of the air-cooling branch pipe 11 gradually increases, and the temperature and humidity sensor 19 in the storage bin body 2 will change with the stacking height, and detect the temperature increase in the storage bin body 2 from bottom to top. When the set temperature value is reached, the control device starts the control board drive 16 to open the ventilation control panel 15 at the bottom, so that the cold air enters the bottom and the upper layer at the same time for cooling and cooling. Similarly, the ventilation control panels 15 are opened layer by layer to cool and cool the finished fertilizer products accumulated in each layer. When production is completed, the air source keeps delivering cold air until the temperature of the finished fertilizer products in the storage bin body 2 drops to room temperature, and the cold air becomes hot air after heat exchange, rises and enters the exhaust port 7, contacts the gas filter 28, and the gas filter 28 filters the fertilizer powder carried in the hot air and retains it in the storage bin body 2. The hot air then enters the gas filter 28 and is discharged. In the above process, the vibrator 20 is started to vibrate the storage bin body 2 at a regular time or inequality to prevent the finished fertilizer products from forming large-volume lumps.

[0035] When the finished fertilizer is discharged through the discharge port 4 for transfer or packaging, the control valve 30 on the discharge port 4 is first opened, and then the discharge screw 27 is started. During the operation of the discharge screw 27, the finished fertilizer in the bottom of the collection bin 3 is discharged; when the finished fertilizer is agglomerated in the bottom of the collection bin 3, the discharge screw 27 plays the function of breaking up the agglomerates and preventing the material from being blocked, thereby ensuring smooth discharge; when the finished fertilizer in the upper part of the storage bin 2 forms a large-volume agglomerate, the vibrator 20 is first started, and the hammer 21 vibrates The storage silo 2 is used to break up large lumps. If the problem still cannot be solved, the silo cover 5 without the exhaust port 7 is opened, the bulk cone cover 12 is removed, and the staff enters the air-cooling main pipe 8 through the ladder 18, climbs to the lumps blocking section, and uses tools to reach into the air-cooling branch pipe 11 to break the lumps into small lumps, and performs manual assisted cleaning. When the small-volume fertilizer finished product lumps reach the bottom, they are squeezed, broken and discharged by the discharge screw 27, which greatly improves the smoothness and stability of the discharge.

Claims

1. A fertilizer anti-caking storage silo with air cooling function, comprising a supporting frame (1), a storage silo body (2), and an air cooling main pipe (8), characterized in that: The storage silo (2) is arranged on a supporting base frame (1), a discharge port (4) is arranged at the bottom of the storage silo (2), an air cooling pipe (8) is coaxially arranged in the storage silo (2) through a bracket, and the height of the air cooling pipe (8) is less than the height of the storage silo (2), an air inlet pipe (9) is arranged at the lower end of the air cooling pipe (8), the air inlet pipe (9) passes through the storage silo (2) and is connected to an air source, and a bulk material cone cover (12) covering the top pipe opening of the air cooling pipe (8) is arranged at the top of the air cooling pipe (8) ), the tip of the bulk material cone cover (12) faces upward, a silo cover (5) is provided on the top of the storage silo body (2), a feed port (6) is provided at the center of the silo cover (5), the storage silo body (2), the air cooling main pipe (8), the bulk material cone cover (12), and the feed port (6) are coaxial, and the bulk material cone cover (12) is located directly below the feed port (6), a gap between the two forms a material drop channel (13) for feeding and moving materials, and an exhaust port (7) is provided on any semicircular portion of the silo cover (5); wherein, A plurality of rapper (20) groups are provided on the outer wall of the storage silo (2) from bottom to top, and there are at least three rapper (20) groups. Each rapper (20) group includes at least two rappers (20). The rappers (20) are provided on the outer wall of the storage silo (2) through a support (22) and are perpendicular to the outer wall of the storage silo (2). The rappers (20) are air cylinders or hydraulic cylinders, and a hammer (21) is provided at the piston end of the rappers (20). At least three auxiliary air ducts (23) are provided on the circumference of the inner wall of the storage silo (2). The lower end of each auxiliary air duct (23) is connected to the air inlet pipe (9) through a scattered air ring pipe (24) and a solenoid valve (29), and the upper end is sealed. A plurality of auxiliary branch pipes (25) are provided on the outer wall of each auxiliary air duct (23) from bottom to top, and each auxiliary branch pipe (25) is on the same vertical line. The diameter of the auxiliary branch pipe (25) is 0.1 to 0.3 times the diameter of the auxiliary air duct (23). A plurality of air-cooling branch pipe groups (10) are arranged from bottom to top on the outer wall of the air-cooling main pipe (8), and a plurality of partition plates (14) are arranged from bottom to top in the air-cooling main pipe (8). A ventilation control plate (15) is arranged on each partition plate (14). The partition plates (14) and the ventilation control plate (15) are both arranged in a semicircular structure adapted to the inner wall of the air-cooling main pipe (8). The partition plates (14) are fixedly arranged on the inner wall of the air-cooling main pipe (8), and the partition plates (14) and the ventilation control plate (15) are movably hinged. A control plate drive (16) is arranged on the partition plate (14), and the control plate drive (16) is movably hinged to the ventilation control plate (15) through a curved rod (17).

2. The anti-caking fertilizer storage bin with air cooling function according to claim 1 is characterized in that: There are at least three groups of air-cooling branch pipe groups (10), each of which includes at least two air-cooling branch pipes (11). The circumference of the air-cooling branch pipes (11) is arranged on the outer wall of the air-cooling main pipe (8), and the angle β between each air-cooling branch pipe (11) and the air-cooling main pipe (8) is an acute angle.

3. The anti-caking fertilizer storage bin with air cooling function according to claim 1, characterized in that: The diameter of the air-cooling main pipe (8) is not less than 120 cm, and the diameter of the air-cooling branch pipe (11) of the air-cooling branch pipe group (10) is 0.1 to 0.5 times the diameter of the air-cooling main pipe (8).

4. The fertilizer anti-caking storage bin with air cooling function according to claim 1 or 3, characterized in that: The air cooling main pipe (8) is provided with a ladder (18) on the inner wall of the ventilation control panel (15) from bottom to top for people to go up and down, and the outer wall of the air cooling main pipe (8) is provided with temperature and humidity sensors (19) at equal intervals from bottom to top.

5. The anti-caking fertilizer storage bin with air cooling function according to claim 1 is characterized in that: The bottom of the storage silo body (2) is provided with a collection silo bottom (3) with a conical structure with the tip facing downward, at least two cleaning holes (26) are provided on the conical wall of the collection silo bottom (3), and valves are provided on the cleaning holes (26). A discharge port (4) is provided at the tip of the collection silo bottom (3).

6. The anti-caking fertilizer storage bin with air cooling function according to claim 1, characterized in that: The bottom end of the discharge port (4) is coaxially provided with a discharge spiral (27) extending upward to the bottom end of the air cooling main pipe (8).

7. The anti-caking fertilizer storage bin with air cooling function according to claim 1, characterized in that: The exhaust port (7) is provided in an open structure, and a gas filter (28) communicating with the interior of the storage bin (2) is provided in the exhaust port (7).

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