Efficient cooling and drying tower for compound fertilizer

Abstract

The utility model discloses an efficient compound fertilizer cooling and drying tower which comprises a tower body, a plurality of groups of material guiding assemblies are arranged in the tower body, each material guiding assembly is composed of a lower conical hopper, an upper conical hopper, a through hole and a material guiding plate, and after entering the tower body from a feeding pipe, the compound fertilizer can sequentially pass through each group of material guiding assemblies and then enter the tower body. A material guide plate of the upper conical hopper guides the fertilizer to fall into a space between the lower conical hopper and the upper conical hopper, the fertilizer falls through through holes in the outer walls of the lower conical hopper and the upper conical hopper, and the falling path and speed of the fertilizer are further changed through arc-shaped baffles on the inner wall of the lower conical hopper and notch grooves reserved between the adjacent arc-shaped baffles; the retention time of the compound fertilizer in the tower body is prolonged, hot air generated by the fertilizer and the drying assembly and cold air provided by the cooling mechanism can be subjected to more sufficient and more comprehensive heat exchange and moisture exchange, it is guaranteed that the temperature of compound fertilizer particles discharged from the tower is appropriate, the moisture content reaches the standard, and the product quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of compound fertilizer processing equipment, specifically a high-efficiency cooling and drying tower for compound fertilizer. Background Technology

[0002] Compound fertilizers can provide crops with a variety of essential nutrients at the same time. Compared with single fertilizers, they have significant advantages such as balanced nutrients and long-lasting fertilizer effect. They are of great significance for improving crop yield, improving the quality of agricultural products and ensuring food security. In the production process of compound fertilizers, the cooling and drying process is a key step that determines the quality and stability of the product.

[0003] In the design of existing cooling and drying towers, the movement path of compound fertilizer particles within the tower is often limited by the equipment structure and layout, resulting in a relatively short residence time for the fertilizer particles. This prevents them from fully and comprehensively exchanging heat and moisture with the cooling medium, leading to poor cooling and drying effects. Therefore, we need to propose a high-efficiency cooling and drying tower for compound fertilizers. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency cooling and drying tower for compound fertilizers. By setting up a material guiding component, the residence time of the compound fertilizer inside the tower is greatly extended, thereby significantly improving the cooling and drying effect. This ensures that the temperature of the compound fertilizer particles exiting the tower is suitable and the moisture content meets the standards, effectively avoiding problems such as fertilizer clumping and pulverization, and guaranteeing product quality, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-efficiency cooling and drying tower for compound fertilizer includes: a tower body, a feed pipe fixedly connected to the top of the tower body, and several sets of material guiding components arranged inside the tower body to prolong the residence time of the compound fertilizer inside the tower body;

[0007] The material guiding assembly includes a lower conical hopper, an upper conical hopper, a through hole, and a guide plate. The upper conical hopper is fixedly installed on the inner wall of the lower conical hopper via a connecting rod. The guide plate is fixedly connected to the top of the upper conical hopper. The through hole is opened on the outer walls of the lower and upper conical hoppers. Several sets of arc-shaped baffles are fixedly connected to the inner wall of the lower conical hopper, and a notch or groove for material passage is reserved between adjacent arc-shaped baffles.

[0008] A drying component used to quickly dry the fertilizer inside the tower;

[0009] A cooling mechanism used to rotate the feed assembly and cool the fertilizer inside.

[0010] Preferably, the drying assembly includes an electric heating box, a blower, and an insulation pipe;

[0011] The electric heating box is fixedly installed on the outer wall of the tower body, the blower is fixedly installed on one side of the electric heating box, and the two ends of the insulation pipe are respectively connected to the electric heating box and the tower body.

[0012] Preferably, the cooling mechanism includes a power component for rotating the material guiding assembly and a cooling component;

[0013] The power assembly includes a hollow rotating rod, the top of which is rotatably mounted on the inner top of the tower body, and the top of which penetrates the tower body and is connected to a drive motor. Several sets of upper conical buckets are fixedly sleeved on the outer wall of the hollow rotating rod.

[0014] Preferably, the cooling assembly includes a cooler, an air duct, and an air duct rotary joint;

[0015] The air passage rotary joint is sleeved on the outer wall of the hollow rotating rod, and the air passage of the air passage rotary joint is connected to the inner cavity of the hollow rotating rod. The two ends of the air supply pipe are respectively connected to the air passage rotary joint and the air cooler. The air cooler is fixedly installed on the outer wall of the tower body.

[0016] It also includes a connecting pipe, which is fixedly connected to the outer wall of the hollow rotating rod, and several sets of jet heads are fixedly connected to the top and bottom of the connecting pipe respectively.

[0017] Preferably, the drive motor is fixedly installed on the top of the tower body, and one end of the output shaft of the drive motor is fixedly connected to the top end of the hollow rotating rod.

[0018] Preferably, it also includes an exhaust fan assembly for discharging moisture from inside the tower body. The exhaust fan assembly includes an exhaust pipe, which is fixedly connected to the outer wall of the tower body, and an axial flow fan is installed inside the exhaust pipe.

[0019] Preferably, the top of each of the several groups of lower conical hoppers is provided with a material discharge chute, and the top of the lowest lower conical hopper is fixedly connected to a discharge pipe.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This invention utilizes several sets of guiding components within the tower body, comprising a lower conical hopper, an upper conical hopper, through holes, and guiding plates. After entering the tower body through the feed pipe, the compound fertilizer passes through each guiding component sequentially. The guiding plate of the upper conical hopper guides the fertilizer to fall into the space between the lower and upper conical hoppers. The fertilizer then falls through the through holes on the outer walls of the lower and upper conical hoppers. Simultaneously, the arc-shaped baffles on the inner wall of the lower conical hopper and the pre-reserved notches between adjacent arc-shaped baffles further alter the fertilizer's falling path and speed. This path design significantly extends the residence time of the compound fertilizer within the tower body, allowing for more thorough and comprehensive heat and moisture exchange between the fertilizer and the hot air generated by the drying components and the cold air provided by the cooling mechanism. This significantly improves the cooling and drying effect, ensuring that the compound fertilizer granules exiting the tower have a suitable temperature and meet moisture content standards, effectively preventing fertilizer agglomeration and pulverization, and guaranteeing product quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the axial side structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the tower body of this utility model;

[0025] Figure 4 This is a schematic diagram of the material guiding component and the cooling component of this utility model;

[0026] Figure 5 This is a schematic diagram of the lower conical bucket of this utility model;

[0027] Figure 6 This is a schematic diagram of the drying component of this utility model.

[0028] In the diagram: 1. Tower body; 2. Feed pipe; 3. Material guiding assembly; 301. Lower conical hopper; 302. Upper conical hopper; 303. Through hole; 304. Guide plate; 305. Arc-shaped baffle; 306. Notched groove; 4. Drying assembly; 401. Electric heating box; 402. Blower; 403. Insulation pipe; 5. Cooling mechanism; 51. Power assembly; 5101. Hollow rotating rod; 5102. Drive motor; 52. Cooling assembly; 5201. Air cooler; 5202. Air duct; 5203. Air circuit rotary joint; 5204. Connecting pipe; 5205. Jet nozzle; 6. Exhaust assembly; 601. Exhaust pipe; 602. Axial flow fan; 7. Material drop chute; 8. Discharge pipe. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-6 This utility model provides a technical solution:

[0031] A high-efficiency cooling and drying tower for compound fertilizer includes: a tower body 1, which is made of 304 stainless steel in sections by welding. The total height can be adjusted according to the production capacity requirements. The inner wall is provided with a wear-resistant ceramic coating. The top of the tower body 1 is fixedly connected to a feed pipe 2, which is installed at an inclination on the top of the tower. A vibrating feeder is configured at the pipe opening. The interior of the tower body 1 is provided with several sets of material guiding components 3 for extending the residence time of the compound fertilizer inside the tower body 1.

[0032] The feeding assembly 3 includes a lower conical hopper 301, an upper conical hopper 302, through holes 303, and a guide plate 304. The upper conical hopper 302 is fixedly installed on the inner wall of the lower conical hopper 301 via a connecting rod. This connection method ensures structural stability without excessively obstructing the fall of fertilizer. The guide plate 304 is fixedly connected to the top of the upper conical hopper 302. Through holes 303 are formed on the outer walls of the lower conical hopper 301 and the upper conical hopper 302. The size and number of these through holes 303 are determined according to the particle size of the compound fertilizer. The particle size and flow rate are optimized to ensure that the fertilizer can fall smoothly while also ensuring a certain residence time. Several sets of arc-shaped baffles 305 are fixedly connected to the inner wall of the lower conical hopper 301. There are notches 306 reserved between adjacent arc-shaped baffles 305 for material passage. The presence of arc-shaped baffles 305 changes the falling trajectory of the fertilizer, causing it to continuously collide with the baffles and change direction during the falling process, further extending the residence time. The notches 306 ensure that the fertilizer can fall continuously without causing accumulation.

[0033] A drying assembly 4 is used to quickly dry the fertilizer inside the tower body 1. The drying assembly 4 includes an electric heating box 401, a blower 402, and an insulation pipe 403. The electric heating box 401 is fixedly installed on the outer wall of the tower body 1. The blower 402 is fixedly installed on one side of the electric heating box 401. The two ends of the insulation pipe 403 are connected to the electric heating box 401 and the tower body 1, respectively. The electric heating box 401 uses a high-efficiency heating element to quickly heat the air to the required temperature. The blower 402 uses strong airflow to transport the heated air through the insulation pipe 403 into the tower body 1. The insulation pipe 403 is wrapped with insulation material, which effectively reduces the heat loss of the hot air during the transportation process and improves energy utilization efficiency. After the hot air enters the tower body 1, it comes into full contact with the falling compound fertilizer, removes the moisture from the fertilizer, and achieves rapid drying. A temperature sensor is installed at the hot air outlet, and a PID controller is used to maintain the hot air temperature within the adjustable range of 80-120℃.

[0034] A cooling mechanism 5 is used to rotate the feed guide assembly 3 and cool the fertilizer inside it. The cooling mechanism 5 includes a power assembly 51 for rotating the feed guide assembly 3 and a cooling assembly 52.

[0035] The power assembly 51 includes a hollow rotating rod 5101. The top end of the hollow rotating rod 5101 is rotatably mounted on the inner top of the tower body 1, and the top end of the hollow rotating rod 5101 passes through the tower body 1 and is connected to a drive motor 5102. The drive motor 5102 is a variable frequency motor (power 22kW) with stepless speed adjustment from 5 to 15 rpm. Several sets of upper conical buckets 302 are fixedly sleeved on the outer wall of the hollow rotating rod 5101. When the drive motor 5102 starts, it can drive the hollow rotating rod 5101 to rotate stably. As the hollow rotating rod 5101 rotates, the material guiding assembly 3 will also rotate, causing the compound fertilizer inside to tumble continuously, increasing the contact area with cooling air (or hot air) and accelerating the cooling (or drying) efficiency.

[0036] The cooling assembly 52 includes a cooler 5201, an air duct 5202, and an air path rotary joint 5203. The air path rotary joint 5203 is sleeved on the outer wall of the hollow rotating rod 5101, and the air path of the air path rotary joint 5203 is connected to the inner cavity of the hollow rotating rod 5101. The two ends of the air duct 5202 are respectively connected to the air path rotary joint 5203 and the cooler 5201. The cooler 5201 is fixedly installed on the outer wall of the tower body 1. The cooler 5201 has a cooling capacity of 300kW and the outlet air temperature can be adjusted to 5-15℃.

[0037] It also includes a connecting pipe 5204, which is fixedly connected to the outer wall of the hollow rotating rod 5101. Several sets of jet nozzles 5205 are fixedly connected to the top and bottom of the connecting pipe 5204 respectively. The cold air generated by the cold air blower 5201 is delivered to the air circuit rotary joint 5203 through the air supply pipe 5202. The air circuit rotary joint 5203 ensures that the cold air can smoothly enter the hollow rotating rod 5101. The cold air is evenly sprayed into the fertilizer inside the material guide assembly 3 through the jet nozzles 5205 to achieve rapid cooling.

[0038] The drive motor 5102 is fixedly installed on the top of the tower body 1, and one end of the output shaft of the drive motor 5102 is fixedly connected to the top end of the hollow rotating rod 5101.

[0039] It also includes an exhaust fan assembly 6 for expelling moisture from inside the tower body 1. The exhaust fan assembly 6 includes an exhaust pipe 601, which is fixedly connected to the outer wall of the tower body 1. An axial flow fan 602 is installed inside the exhaust pipe 601. After the axial flow fan 602 is started, it generates a strong suction force to quickly expel moisture (hot air) from the outside of the tower body 1, maintaining a dry environment inside the tower body 1, which is beneficial to the drying process of compound fertilizer.

[0040] Several sets of lower conical hoppers 301 are provided with a material discharge chute 7 at the top. The bottommost lower conical hopper 301 is fixedly connected to a discharge pipe 8. The discharge pipe 8 can accurately discharge the cooled and dried compound fertilizer from the tower body 1 and enter the subsequent packaging or storage stage.

[0041] The compound fertilizer enters the tower body 1 through the feed pipe 2 and first falls onto the uppermost guide component 3. The guide plate 304 guides the fertilizer to fall into the space between the lower conical hopper 301 and the upper conical hopper 302. The fertilizer falls through the through hole 303 and collides with the arc-shaped baffle 305, changing its direction and prolonging its residence time in the guide component 3. During this process, the electric heating box 401 of the drying component 4 heats the air, and the blower 402 delivers the hot air into the tower body 1 through the heat insulation pipe 403. The hot air comes into full contact with the falling compound fertilizer, removing the moisture from the fertilizer and achieving drying.

[0042] The drive motor 5102 starts, driving the hollow rotating rod 5101 to rotate, which in turn causes the material guiding assembly 3 to rotate. The fertilizer tumbles continuously inside the material guiding assembly 3. The air cooler 5201 of the cooling assembly 52 generates cold air, which enters the inner cavity of the hollow rotating rod 5101 through the air duct 5202 and the air circuit rotary joint 5203, and is then evenly sprayed onto the fertilizer through the jet nozzle 5205 on the connecting pipe 5204 to cool the fertilizer.

[0043] During the cooling and drying process, the axial flow fan 602 of the induced draft assembly 6 is started, and the moisture generated inside the tower body 1 due to drying is discharged outside the tower through the exhaust pipe 601, maintaining a dry environment inside the tower. The fertilizer passes through each layer of the material guiding assembly 3 in sequence, continuously undergoing cooling and drying, and finally is discharged from the tower body 1 through the discharge pipe 8 at the top of the lowest conical hopper 301, completing the entire cooling and drying process.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency cooling and drying tower for compound fertilizer, characterized in that, include: The tower body (1) has a feed pipe (2) fixedly connected to the top of the tower body (1), and the tower body (1) is provided with several sets of feed guiding components (3) for extending the residence time of compound fertilizer inside the tower body (1). The material guiding assembly (3) includes a lower conical hopper (301), an upper conical hopper (302), a through hole (303), and a guide plate (304). The upper conical hopper (302) is fixedly installed on the inner wall of the lower conical hopper (301) by a connecting rod. The guide plate (304) is fixedly connected to the top of the upper conical hopper (302). The through hole (303) is opened on the outer walls of the lower conical hopper (301) and the upper conical hopper (302). Several sets of arc-shaped baffles (305) are fixedly connected to the inner wall of the lower conical hopper (301). A notch (306) for material passage is reserved between adjacent arc-shaped baffles (305). Drying assembly (4) for rapidly drying the fertilizer inside the tower body (1); Cooling mechanism (5) for rotating the feed assembly (3) and cooling the fertilizer inside it.

2. The high-efficiency cooling and drying tower for compound fertilizer according to claim 1, characterized in that: The drying assembly (4) includes an electric heating box (401), a blower (402), and an insulation pipe (403). The electric heating box (401) is fixedly installed on the outer wall of the tower body (1), the blower (402) is fixedly installed on one side of the electric heating box (401), and the two ends of the insulation pipe (403) are respectively connected to the electric heating box (401) and the tower body (1).

3. The high-efficiency cooling and drying tower for compound fertilizer according to claim 1, characterized in that: The cooling mechanism (5) includes a power component (51) for rotating the material guide assembly (3) and a cooling component (52). The power assembly (51) includes a hollow rotating rod (5101), the top of which is rotatably mounted on the inner top of the tower body (1), and the top of which penetrates the tower body (1) and is connected to a drive motor (5102). Several sets of upper conical buckets (302) are fixedly sleeved on the outer wall of the hollow rotating rod (5101).

4. The high-efficiency cooling and drying tower for compound fertilizer according to claim 3, characterized in that: The cooling assembly (52) includes a cooler (5201), an air duct (5202), and an air duct rotary joint (5203); The air passage rotary joint (5203) is sleeved on the outer wall of the hollow rotating rod (5101), and the air passage of the air passage rotary joint (5203) is connected to the inner cavity of the hollow rotating rod (5101). The two ends of the air supply pipe (5202) are respectively connected to the air passage rotary joint (5203) and the air cooler (5201). The air cooler (5201) is fixedly installed on the outer wall of the tower body (1). It also includes a connecting pipe (5204), which is fixedly connected to the outer wall of the hollow rotating rod (5101), and several sets of jet heads (5205) are fixedly connected to the top and bottom of the connecting pipe (5204).

5. The high-efficiency cooling and drying tower for compound fertilizer according to claim 4, characterized in that: The drive motor (5102) is fixedly installed on the top of the tower body (1), and one end of the output shaft of the drive motor (5102) is fixedly connected to the top end of the hollow rotating rod (5101).

6. The high-efficiency cooling and drying tower for compound fertilizer according to claim 1, characterized in that: It also includes an exhaust fan assembly (6) for discharging moisture from inside the tower body (1), the exhaust fan assembly (6) including an exhaust pipe (601), the exhaust pipe (601) being fixedly connected to the outer wall of the tower body (1), and an axial flow fan (602) being installed inside the exhaust pipe (601).

7. The high-efficiency cooling and drying tower for compound fertilizer according to claim 1, characterized in that: The top of each of the several sets of lower conical hoppers (301) is provided with a material discharge chute (7), and the top of the lowest lower conical hopper (301) is fixedly connected to a discharge pipe (8).

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