Compound fertilizer particle rapid cooling device

Abstract

This utility model relates to the technical field of compound fertilizer granule processing equipment, specifically a rapid cooling device for compound fertilizer granules. A spiral conveyor is connected to a uniform material box, which contains several uniform material plates. A first filter plate is located on one side wall of the uniform material box, and a second guide plate is located at the bottom of the first guide plate. A first fan is located on the side wall of the uniform material box away from the first filter plate. A cooling box is located at the bottom of the uniform material box, containing a second fan. A conical tube is located at the bottom of the cooling box, with one end connected to an L-shaped pipe, one end of the L-shaped pipe connected to an S-shaped bend, and one end of the S-shaped bend connected to an induced draft fan. A ventilation pipe is located at the corner of the L-shaped pipe, with one end connected to a blower. A one-way valve is located outside the ventilation pipe. By utilizing the structure of the guide plate, the first fan, the cooling box, the second fan, the S-shaped bend, and the induced draft fan, the problem of low cooling efficiency and uneven cooling in general cooling devices is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of compound fertilizer granule processing equipment, specifically a rapid cooling device for compound fertilizer granules. Background Technology

[0002] In the production and processing of compound fertilizers, the manufacture of compound fertilizer granules is a crucial step. Compound fertilizers, as chemical fertilizers containing two or more nutrients, play a vital role in balanced fertilization, improving fertilizer utilization, and promoting high and stable crop yields due to their high nutrient content, low byproduct composition, and good physical properties. However, during the manufacturing process of compound fertilizer granules, the temperature of the granules rises significantly after the drying process. High-temperature compound fertilizer granules are not only detrimental to subsequent packaging, storage, and transportation, but may also adversely affect fertilizer quality, such as causing chemical reactions or physical changes in certain components, thus affecting fertilizer efficacy. Therefore, after the compound fertilizer granules are made and dried, they must undergo effective cooling treatment to reduce the granule temperature and ensure fertilizer quality and stability. However, general cooling devices are often inefficient and result in uneven cooling.

[0003] Therefore, it is particularly important to design a rapid cooling device for compound fertilizer granules to overcome the above-mentioned technical defects and improve overall practicality. Utility Model Content

[0004] The purpose of this invention is to provide a rapid cooling device for compound fertilizer granules to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A rapid cooling device for compound fertilizer granules includes a spiral conveyor cylinder connected to a uniform distribution box. The uniform distribution box contains several uniform distribution plates. A first filter plate is located on one side wall of the uniform distribution box. A first guide plate is located at the bottom of the uniform distribution box, and a second guide plate is located at the bottom of the first guide plate. A first fan is located on the side wall of the uniform distribution box away from the first filter plate. A cooling box is located at the bottom of the uniform distribution box, containing a second fan and a guide block. A conical tube is located at the bottom of the cooling box. One end of the conical tube is connected to an L-shaped through pipe, and one end of the L-shaped through pipe is connected to an S-shaped bend. One end of the S-shaped bend is connected to an induced draft fan. A slot is provided at the end of the S-shaped bend near the induced draft fan. A ventilation pipe is located at the corner of the L-shaped through pipe, and one end of the ventilation pipe is connected to a blower. A one-way valve is located on the outside of the ventilation pipe.

[0006] As a preferred embodiment of this utility model, the spiral conveyor includes an inlet, an outlet, a shell, a rotating rod, spiral blades, and a drive motor. The output end of the drive motor is connected to the rotating rod via a coupling. One end of the rotating rod is connected to the shell via a bearing seat. The spiral blades are provided with heat-conducting fins, and the heat-conducting fins are made of copper.

[0007] As a preferred embodiment of this utility model, the top of the material distribution box is provided with a feed inlet, and the feed inlet and the discharge outlet are positioned opposite each other. The first guide plate and the second guide plate are arranged obliquely. The material distribution plate includes an upper guide plate and a lower guide plate. The upper guide plate and the lower guide plate are triangular in shape and symmetrically arranged. The upper guide plate completely covers the lower guide plate. The material distribution box is provided with a plurality of ventilation holes, and a wind hood is provided on one side of the plurality of ventilation holes. The wind hood is connected to the output end of the first fan.

[0008] As a preferred embodiment of this utility model, the second fan is provided with a protective cover, and the protective cover is provided with a filter screen. The input ends of the second fan and the blower are respectively provided with filter boxes. The filter boxes are provided with a number of filter plates. The filter plates are arranged in three groups, namely stainless steel perforated mesh, polyester fiber filter cloth and HEPA filter paper, for filtering air. The three groups of filter plates are provided with sealing gaskets and are fixed to the filter box by bolts.

[0009] As a preferred embodiment of this utility model, the S-shaped bend has a plurality of heat-conducting plates along its circumference on its outer side, and the heat-conducting plates are made of copper and copper alloys.

[0010] As a preferred embodiment of this utility model, the S-shaped bend is provided with a barrier net inside the end near the induced draft fan, and the aperture of the barrier net is larger than the diameter of the material.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a rapid cooling device for compound fertilizer granules. The device comprises a guide plate, a first fan, a cooling box, a second fan, a guide block, a conical tube, an L-shaped pipe, an S-shaped bend, and an induced draft fan. Compound fertilizer granules enter a spiral conveyor cylinder, are conveyed by a drive motor-driven spiral blade, and are initially cooled by copper heat-conducting fins before falling into a uniform distribution box. A uniform distribution plate evenly disperses the granules. The first and second guide plates guide the granules to fall in a single curtain pattern. The first fan generates airflow to promote cooling, and a first filter plate filters impurities and prevents granule escape. The granules enter the cooling box, where the second fan delivers filtered air to accelerate cooling. The guide block assists the flow, and a blower guides the airflow and granules into the S-shaped bend. External heat-conducting fins on the S-shaped bend improve cooling efficiency. Finally, the granules are discharged under the action of the induced draft fan. An intercepting net intercepts escaped granules and collects them through slots, completing the cooling process. This invention solves the problems of low cooling efficiency and uneven cooling found in conventional cooling devices. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the overall plan of this utility model; Figure 2 This is a schematic diagram of the material distribution box of this utility model; Figure 3 This is a schematic diagram of the specific structure of the cooling material assembly of this utility model.

[0013] In the diagram: 1. Spiral conveyor; 2. Feeding box; 201. Feeding plate; 202. First filter plate; 203. First guide plate; 204. Second guide plate; 205. First fan; 3. Cooling box; 301. Second fan; 302. Guide block; 303. Conical tube; 304. L-shaped pipe; 305. Exhaust fan; 306. Slotted; 307. Ventilation pipe; 308. Blower; 309. S-shaped bend; 310. Check valve. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0015] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0016] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0018] For examples, please refer to Figure 1-3 This utility model provides a technical solution: A rapid cooling device for compound fertilizer granules includes a spiral conveyor cylinder 1, a uniform distribution box 2 connected to the spiral conveyor cylinder 1, a plurality of uniform distribution plates 201 inside the uniform distribution box 2, a first filter plate 202 on one side wall of the uniform distribution box 2, a first guide plate 203 at the bottom end of the uniform distribution box 2, a second guide plate 204 at the bottom end of the first guide plate 203, a first fan 205 on the side wall of the uniform distribution box 2 away from the first filter plate 202, a cooling box 3 at the bottom of the uniform distribution box 2, a second fan 301 inside the cooling box 3, a guide block 302 inside the cooling box 3, and a tapered tube 303 at the bottom end of the cooling box 3, one end of the tapered tube 303 being connected to an L-shaped through pipe 304. One end of the L-shaped pipe 304 is connected to the S-shaped bend 309, and one end of the S-shaped bend 309 is connected to the induced draft fan 305. The end of the S-shaped bend 309 near the induced draft fan 305 has a slot 306. A ventilation pipe 307 is located at the corner of the L-shaped pipe 304, and one end of the ventilation pipe 307 is connected to the blower 308. A one-way valve 310 is located on the outside of the ventilation pipe 307. The spiral conveyor cylinder 1 receives compound fertilizer granules and continuously conveys them by driving the rotating rod and spiral blades to rotate via a drive motor. After the copper heat-conducting fins on the spiral blades initially reduce the temperature of the granules, the granules fall from the discharge port into the top inlet of the equalization box 2. Inside the equalization box 2, the upper and lower guide plates of the equalization plate 201 evenly disperse the granules, preventing... The particles are stacked and guided in an orderly manner by the first guide plate 203 and the second guide plate 204, which are set at an angle, forming a single curtain. At the same time, the first fan 205 forms an effective airflow through the vents on the hood and the material distribution box 2, further promoting particle cooling. The first filter plate 202 can help filter some impurities and air that may be stirred up, while preventing particles from escaping. The particles then enter the cooling box 3. Under the protection of the protective cover and filter screen, the second fan 301 accelerates the cooling of the single curtain material. The air transported here is also filtered. At the same time, the blower 308 delivers clean air filtered by stainless steel perforated mesh, polyester fiber filter cloth, and HEPA filter paper into the cooling box 3 through the ventilation pipe 307, enhancing the cooling effect. The cooling effect is achieved by the guide block 302 assisting the particles to flow reasonably within the cooling box 3. After cooling, the particles enter the L-shaped pipe 304 through the conical pipe 303. The blower 308 guides the airflow and the direction of the particles, flowing into the S-shaped bend 309. The copper and copper alloy heat-conducting plates on the outside of the S-shaped bend 309 conduct the heat of the particles to the outside, improving the cooling efficiency. Finally, under the action of the induced draft fan 305, the particles pass through the S-shaped bend 309. The baffle net set inside the S-shaped bend 309 near the induced draft fan 305 intercepts the compound fertilizer particles that enter with the airflow, preventing damage or blockage to the induced draft fan 305. The intercepted particles leave the cooling component through the slot 306 and are collected, completing the entire cooling process. The spiral conveyor cylinder 1 includes an inlet, an outlet, a shell, a rotating rod, spiral blades, and a drive motor. The output end of the drive motor is connected to the rotating rod via a coupling. One end of the rotating rod is connected to the shell via a bearing seat. The spiral blades are equipped with heat-conducting fins made of copper. The spiral conveyor cylinder drives the rotating rod and spiral blades to rotate via the drive motor, realizing the continuous conveying of compound fertilizer granules. The copper heat-conducting fins on the spiral blades increase the contact area with the compound fertilizer granules, improve heat transfer efficiency, and help to initially reduce the temperature of the compound fertilizer granules during the conveying process. The material distribution box 2 provides favorable conditions for rapid cooling. An inlet is located at the top of the distribution box 2, with the inlet and outlet positioned opposite each other. The first guide plate 203 and the second guide plate 204 are angled. The distribution plate 201 includes an upper guide plate and a lower guide plate, which are triangular in shape and symmetrically arranged. The upper guide plate completely covers the lower guide plate. The distribution box 2 has several ventilation holes, and a fan hood is located on one side of each ventilation hole. The fan hood is connected to the output end of the first fan 205. The distribution box is positioned with the top inlet opposite the outlet of the spiral conveyor, ensuring smooth entry of the compound fertilizer granules. The internal distribution plates, including the upper and lower guide plates, can evenly disperse the granules, preventing accumulation and improving cooling efficiency.The first and second guide plates, positioned at an angle, guide the granules to fall in an orderly, single-curtain pattern. Ventilation holes and a fan shroud, in conjunction with the first fan, create an effective airflow, further promoting granule cooling. The second fan 301 is equipped with a protective cover containing a filter screen. Filter boxes are located at the input ends of the second fan 301 and the blower 308, each containing several filter plates. Three sets of filter plates are used: stainless steel perforated mesh, polyester fiber filter cloth, and HEPA filter paper, for air filtration. Sealing gaskets are provided on all three sets of filter plates, which are fixed to the filter boxes with bolts. The second fan inside the cooling box cools the single-curtain material, accelerating the cooling of the compound fertilizer granules. The protective cover and filter screen outside the second fan prevent granules from entering the fan, protecting its normal operation. The stainless steel perforated mesh, polyester fiber filter cloth, and HEPA filter paper effectively filter impurities in the air, ensuring clean air entering the cooling box and preventing contamination. The compound fertilizer granules are processed using an S-shaped bend with several heat-conducting fins along its circumference. These fins are made of copper and copper alloys. The S-shaped bend increases the residence time of the compound fertilizer granules in the pipe, facilitating further cooling. The external copper and copper alloy heat-conducting fins quickly transfer the heat from the compound fertilizer granules inside the pipe to the outside, improving cooling efficiency. The heat-conducting fins are arranged along the circumference of the S-shaped bend to ensure even heat distribution and prevent localized overheating. An internal baffle mesh is installed at the end of the S-shaped bend 309 closest to the induced draft fan 305. The mesh aperture is larger than the material diameter. This baffle mesh intercepts compound fertilizer granules that enter the induced draft fan with the airflow, preventing damage or blockage. The larger aperture ensures that the interception of granules does not affect the normal airflow, guaranteeing stable operation of the cooling device. Simultaneously, the intercepted compound fertilizer granules are collected by being discharged from the cooling assembly through slots.

[0019] The working process of this utility model is as follows: When using this compound fertilizer granule rapid cooling device, the spiral conveyor 1 first receives the compound fertilizer granules. A drive motor rotates the rotating rod and spiral blades to achieve continuous conveying. After the copper heat-conducting fins on the spiral blades initially reduce the temperature of the granules, the granules fall from the outlet into the top inlet of the equalization box 2. Inside the equalization box 2, the upper and lower guide plates of the equalization plate 201 evenly disperse the granules to prevent accumulation. The obliquely arranged first guide plate 203 and second guide plate 204 guide the granules to fall in an orderly single-curtain pattern. Simultaneously, the first fan 205 forms an effective airflow through the hood and ventilation holes on the equalization box 2, further promoting granule cooling. The first filter plate 202 helps filter out some impurities and air that may be stirred up, while preventing granules from escaping. The granules then enter the cooling box 3. Under the protection of the protective cover and filter screen, the second fan 301 accelerates the cooling of the single-curtain material. The air transported inside is also filtered. At the same time, the blower 308 delivers clean air filtered by stainless steel perforated mesh, polyester fiber filter cloth and HEPA filter paper into the cooling box 3 through the ventilation pipe 307, which enhances the cooling effect. The guide block 302 assists the particles to flow reasonably in the cooling box 3. The cooled particles enter the L-shaped pipe 304 through the conical pipe 303. The blower 308 is used to guide the airflow and the direction of the particles, flowing into the S-shaped bend pipe 309. The copper and copper alloy heat-conducting plates on the outside of the S-shaped bend pipe 309 conduct the heat of the particles to the outside, improving the cooling efficiency. Finally, under the action of the induced draft fan 305, the particles pass through the S-shaped bend pipe 309. The barrier net set inside the S-shaped bend pipe 309 near the induced draft fan 305 intercepts the compound fertilizer particles that enter with the airflow, preventing the induced draft fan 305 from being damaged or blocked. The intercepted particles leave the cooling component through the slot 306 and are collected, completing the entire cooling process.

[0020] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is through a controller. The control circuit of the controller can be realized by a person skilled in the art through simple circuit connection. It is common knowledge in the field. Therefore, this application will not explain the control method and circuit connection in detail.

[0021] 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 device for rapid cooling of compound fertilizer granules, comprising a screw conveyor cylinder (1), characterized in that: The spiral conveyor (1) is connected to a material distribution box (2). The material distribution box (2) contains several material distribution plates (201). A first filter plate (202) is located on one side wall of the material distribution box (2). A first guide plate (203) is located at the bottom of the material distribution box (2). A second guide plate (204) is located at the bottom of the first guide plate (203). A first fan (205) is located on the side wall of the material distribution box (2) away from the first filter plate (202). A cooling box (3) is located at the bottom of the material distribution box (2). A second fan (301) is located inside the cooling box (3). There is a guide block (302), and a tapered tube (303) is provided at the bottom of the cooling box (3). One end of the tapered tube (303) is connected to an L-shaped pipe (304), one end of the L-shaped pipe (304) is connected to an S-shaped bend (309), one end of the S-shaped bend (309) is connected to an induced draft fan (305), and the end of the S-shaped bend (309) near the induced draft fan (305) is provided with a slot (306). A ventilation pipe (307) is provided at the corner of the L-shaped pipe (304), one end of the ventilation pipe (307) is connected to a blower (308), and a one-way valve (310) is provided on the outside of the ventilation pipe (307).

2. The device for rapid cooling of compound fertilizer granules according to claim 1, characterized in that: The spiral conveyor (1) includes an inlet, an outlet, a shell, a rotating rod, spiral blades, and a drive motor. The output end of the drive motor is connected to the rotating rod via a coupling. One end of the rotating rod is connected to the shell via a bearing seat. The spiral blades are provided with heat-conducting fins, and the heat-conducting fins are made of copper.

3. The device for rapid cooling of compound fertilizer granules according to claim 2, characterized in that: The top of the material distribution box (2) is provided with a feed inlet, and the feed inlet and the discharge outlet are opposite each other. The first guide plate (203) and the second guide plate (204) are obliquely arranged. The material distribution plate (201) includes an upper guide plate and a lower guide plate. The upper guide plate and the lower guide plate are triangular and symmetrically arranged. The upper guide plate completely covers the lower guide plate. The material distribution box (2) is provided with a number of ventilation holes, and a wind cover is provided on one side of the number of ventilation holes. The wind cover is connected to the output end of the first fan (205).

4. The device for rapid cooling of compound fertilizer granules according to claim 1, characterized in that: The second fan (301) is provided with a protective cover, and the protective cover is provided with a filter screen. The input ends of the second fan (301) and the blower (308) are respectively provided with filter boxes. The filter boxes are provided with several filter plates inside. The filter plates are arranged in three groups, namely stainless steel perforated mesh, polyester fiber filter cloth and HEPA filter paper, for filtering air. The three groups of filter plates are provided with sealing gaskets and are fixed to the filter box by bolts.

5. The device for rapid cooling of compound fertilizer granules according to claim 1, characterized in that: The S-shaped bend has several heat-conducting plates along its circumference on its outside, and the heat-conducting plates are made of copper and copper alloys.

6. The device for rapid cooling of compound fertilizer granules according to claim 1, characterized in that: The S-shaped bend (309) has an internal barrier net at the end near the induced draft fan (305), and the aperture of the barrier net is larger than the diameter of the material.

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