A drying and cooling integrated device

Abstract

This invention provides an integrated drying and cooling device, comprising: a conveying mechanism including a feed cylinder and a partition; the feed cylinder is inclined and open at both ends; the partition is built into the feed cylinder and divides it into a drying zone and a cooling zone, the drying zone being located above the cooling zone; and a feed port is also provided on the partition in the horizontal direction; a cooling mechanism including an annular air chamber and a blower end; the annular air chamber is built into the cooling zone and has multiple air outlets circumferentially; the blower end is located outside the feed cylinder and connected to the annular air chamber; and a drying mechanism including a wind box, a heating end, and a circulating air duct; the wind box is located above the feed cylinder and connected to the drying zone; the heating end is built into the wind box; and one end of the circulating air duct is connected to the cooling zone and the other end is connected to the drying zone. This integrated drying and cooling device integrates drying and cooling structures and can recycle the hot air generated during the cooling process for drying.

Description

Technical Field

[0001] The invention relates to the technical field of compound fertilizer production and processing, and in particular to a drying and cooling integrated device. Background Art

[0002] In the production and processing of compound fertilizer, it is necessary to go through the processes of raw material batching, stirring and mixing, crushing and agglomeration, granulation, primary screening, particle drying, particle cooling, secondary screening and particle coating in sequence, and finally the finished product is packaged by packaging equipment to produce bagged compound fertilizer for subsequent sales and transportation. In the processing of compound fertilizer, after the various ingredients are mixed and granulated, they need to pass through drying equipment and cooling equipment in sequence. The existing drying and cooling equipment are installed separately and work independently of each other.

[0003] For example, patent CN211503351U provides a compound fertilizer production cooling device, including a support seat, a shell, and a cooling barrel. The top of the support seat is fixedly connected to the shell, the center of the top of the shell is hinged with a cover plate, the inside of the shell is fixedly connected to the cooling barrel, and the center of the top of the cooling barrel is provided with a feed port. The other end between the upper connecting plate and the lower connecting plate is fixedly connected to a connecting column, the front and rear ends of the top of the connecting column are fixedly connected to a sleeve, the top of the sleeve is clamped with a support rod, the upper end of the top of the upper connecting plate is hinged with a guide plate, and the guide plate and the support rod are hinged with a reinforcing rib. The support column is connected with a rotating shaft inside, and a fan is sleeved on one side of the rotating shaft. The left and right sides of the cooling barrel are clamped with side plates, and the center of the bottom of the shell is provided with a discharge port, which is connected to the bottom of the cooling barrel. The cooling device solves the problem that the cooling time of the existing cooling equipment is short, resulting in the cooling effect of the compound fertilizer not reaching the expected effect. However, this cooling device can only perform the cooling work in the production and processing of compound fertilizer alone, and the hot air generated during the cooling process cannot be effectively utilized.

[0004] At present, most compound fertilizer production lines use the independent cooling device in the above patent. This cooling device and the drying equipment operate independently during the compound fertilizer processing. The hot air generated by the cooling device cannot be recycled and can only be discharged into the air after filtering. Therefore, a drying and cooling integrated device is needed to recycle the hot air generated during the cooling process. Summary of the invention

[0005] In view of this, it is necessary to provide a drying and cooling integrated device that can simultaneously perform the drying and cooling processes in the compound fertilizer processing process, and can also effectively utilize the hot air generated during the cooling process for drying.

[0006] In order to achieve the above technical objectives, the technical solution of the present invention provides a drying and cooling integrated device for the production and processing of compound fertilizers, which comprises:

[0007] A transport mechanism, wherein the transport mechanism includes a material barrel and a partition, wherein the material barrel is tilted and has openings at both ends, and is used to transport compound fertilizer particles, wherein the partition is built into the material barrel and divides the material barrel into a drying area and a cooling area, wherein the drying area is located above the cooling area, and the partition is also provided with a material passing port in the horizontal direction, which is used to connect the drying area and the cooling area, so that the compound fertilizer particles pass through the drying area and the cooling area in sequence after entering the material barrel;

[0008] A cooling mechanism, the cooling mechanism comprising an annular air cavity and an air blowing end, the annular air cavity is built into the cooling zone and has a plurality of air outlet holes opened along the circumference, the air blowing end is arranged outside the material passing barrel and connected to the annular air cavity, and is used to input cold air into the annular air cavity;

[0009] The drying mechanism includes a bellows, a heating end and a circulating air duct. The bellows is arranged above the material passing cylinder and connected to the drying area. The heating end is built into the bellows and is used to heat the airflow in the bellows so as to input hot air into the drying area. One end of the circulating air duct is connected to the cooling area and the other end is connected to the drying area, and is used to circulate the airflow in the cooling area to the bellows.

[0010] Furthermore, it also includes a separation mechanism, which is two in number and is respectively arranged in the drying zone and the cooling zone, each of which includes a plurality of separation rods, and the plurality of separation rods are vertically and cross-spaced so that the compound fertilizer particles are separated from each other when passing through the drying zone and the cooling zone.

[0011] Furthermore, it also includes a support frame, and the material passing barrel is obliquely arranged on the support frame.

[0012] Furthermore, it also includes a Y-shaped unloading plate, which is arranged at the tail end of the feeding barrel to discharge the dried and cooled compound fertilizer particles.

[0013] Furthermore, the feeding barrel includes a feeding plate, a side plate and a top cover. The feeding plate is arranged at an angle. There are two side plates, which are respectively arranged on both sides of the feeding plate, so as to form a circulation channel for the compound fertilizer particles to pass through. The partition is inserted in the circulation channel to divide the circulation channel to form the drying area and the cooling area. The top cover is arranged on the top of the two side plates to seal the top of the circulation channel.

[0014] Furthermore, the feed plate includes a first inclined plate and a second inclined plate, the first inclined plate and the second inclined plate are arranged in sequence and inclined to each other, the angle between the first inclined plate and the second inclined plate is 100-120°, and the separation rod is vertically arranged on the first inclined plate and the second inclined plate.

[0015] Furthermore, the second inclined plate is provided with a plurality of filter holes along the vertical direction, and the filter holes and the separation rods are arranged alternately to filter out unqualified products in the compound fertilizer particles.

[0016] Furthermore, it also includes a waste recovery hopper, which is arranged below the second inclined plate and opposite to the filter hole to collect unqualified products in the compound fertilizer particles.

[0017] Furthermore, the blowing end is a blower, and the blower is arranged on the side plate and connected to the annular air cavity.

[0018] Furthermore, the heating end is a heating wire, and the heating wire is built into the bellows.

[0019] Compared with the prior art, the beneficial effects of the present invention include: the integrated drying and cooling device of the present invention integrates a drying mechanism and a cooling mechanism, and can perform drying and cooling operations simultaneously during the production and processing of compound fertilizers. Compared with traditional independently operated drying and cooling equipment, the use of conveyor belts can be reduced, thereby reducing the footprint of the compound fertilizer production line. An airflow circulation structure is arranged between the drying mechanism and the cooling mechanism, and the hot air generated during the cooling process can be output to the drying mechanism, thereby reducing the energy consumption of the drying mechanism when it is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention - a drying and cooling integrated device;

[0021] Figure 2 is a cross-sectional view of an embodiment of the present invention - a drying and cooling integrated device;

[0022] Figure 3 It is a schematic diagram of the partial structure of an embodiment provided by the present invention - a drying and cooling integrated device.

[0023] 1. Transport mechanism; 11. Feed barrel; 111. Feed plate; 1111. First inclined plate; 1112. Second inclined plate; 112. Side plate; 113. Top cover; 12. Partition plate; 121. Feed port; 13. Drying area; 14. Cooling area; 2. Cooling mechanism; 21. Annular air cavity; 211. Air outlet; 22. Blowing end; 3. Drying mechanism; 31. Bellows; 32. Heating end; 33. Circulating air duct; 4. Separation mechanism; 5. Support frame; 6. Y-type unloading plate; 7. Waste collection bucket. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0025] Reference Figures 1 to 3 The present invention provides a drying and cooling integrated device for the production and processing of compound fertilizers, which comprises:

[0026] A transport mechanism 1, the transport mechanism 1 comprises a feeding barrel 11 and a partition 12, the feeding barrel 11 is tilted and has openings at both ends, and is used to transport compound fertilizer particles, the partition 12 is built into the feeding barrel 11 and divides the feeding barrel 11 to form a drying area 13 and a cooling area 14, the drying area 13 is located above the cooling area 14, and the partition 12 is also provided with a feeding port 121 in the horizontal direction, which is used to connect the drying area 13 and the cooling area 14, so that the compound fertilizer particles pass through the drying area 13 and the cooling area 14 in sequence after entering the feeding barrel 11;

[0027] The cooling mechanism 2 includes an annular air cavity 21 and an air blowing end 22. The annular air cavity 21 is built in the cooling zone 14 and has a plurality of air outlet holes 211 opened along the circumferential direction. The air blowing end 22 is arranged outside the material passing barrel 11 and connected to the annular air cavity 21 to input cold air into the annular air cavity 21.

[0028] The drying mechanism 3 includes a bellows 31, a heating end 32 and a circulating air duct 33. The bellows 31 is arranged above the material passing barrel 11 and is connected to the drying area 13. The heating end 32 is built into the bellows 31 for heating the air flow in the bellows 31 so as to input hot air into the drying area 13. One end of the circulating air duct 33 is connected to the cooling area 14, and the other end is connected to the bellows 31 for circulating the air flow in the cooling area 14 to the bellows 31.

[0029] The integrated drying and cooling device is composed of a closed transport mechanism 1 for loading and transporting compound fertilizers, and a cooling mechanism 2 and a drying mechanism 3 are integrated outside the transport mechanism 1. The transport mechanism 1 includes a feeding barrel 11 and a partition 12 for conveying compound fertilizers. The compound fertilizer particles contain a certain amount of moisture after being processed by the granulation equipment. The compound fertilizer particles can be conveyed to the feeding barrel 11 from the unloading end of the granulation equipment. The partition 12 is used to divide the feeding barrel 11 into two independent drying areas and cooling areas, and the cooling mechanism 2 and the drying mechanism 3 are respectively connected to the cooling area and the drying area, so that the compound fertilizer particles can be dried and cooled in turn after entering the feeding barrel 11. The centrally disposed cooling mechanism 2 and drying mechanism 3 simultaneously use the air flow impact method to dry and cool the compound fertilizer particles. The cooling mechanism 2 continuously delivers cold air to the cooling area through the annular air cavity 21 and the blowing end 22, wherein the annular air cavity 21 can simultaneously output cold air to the compound fertilizer particles from multiple directions, thereby accelerating the cooling efficiency, while the drying mechanism 3 continuously delivers hot air to the drying area through the bellows 31 and the heating end 32, thereby drying the compound fertilizer particles entering the barrel 11, and the drying area and the cooling area are also interconnected through the circulating air duct 33, thereby effectively utilizing the hot air generated during the cooling process for drying work, so as to save the energy consumption required for heating the air flow during the drying process.

[0030] In the embodiment provided by the present invention, the feed barrel 11 includes a feed plate 111, a side plate 112 and a top cover 113. The feed plate 111 is tilted, and the number of the side plates 112 is two and they are respectively arranged on both sides of the feed plate 111, so as to form a circulation channel for compound fertilizer particles to pass through. The partition 12 is inserted into the circulation channel so as to divide the circulation channel to form the drying area 13 and the cooling area 14. The top cover 113 is arranged on the top of the two side plates 112 to seal the top of the circulation channel. Among them, the feed port 121 on the partition 12 is rectangular, and a baffle structure can also be set at the corresponding feed port of the feed barrel 11. Preferably, the height of the baffle and the feed port is 2-3 times that of the compound fertilizer particles to prevent the compound fertilizer particles from piling up during the falling process, so as to fully allow the compound fertilizer particles to contact with the air and complete drying and cooling.

[0031] In the embodiment provided by the present invention, the top cover 113 is also provided with an openable and closable cover plate to inspect the inside of the barrel 11. The top cover 113 may be an integral structure or may be formed by splicing multiple sections of fixed plates, and the cover plate may be a transparent plate as required to observe the flow of compound fertilizer particles inside the barrel 11.

[0032] In the embodiment provided by the present invention, the feed plate 111 includes a first inclined plate 1111 and a second inclined plate 1112, the first inclined plate 1111 and the second inclined plate 1112 are arranged in sequence and inclined to each other, and the angle between the first inclined plate 1111 and the second inclined plate 1112 is 100-120°. The lengths of the first inclined plate 1111 and the second inclined plate 1112 can be determined according to actual needs, and a transitional structure is used between the first inclined plate 1111 and the second inclined plate 1112, which can be used to slow down the falling speed of the compound fertilizer particles.

[0033] In the embodiment provided by the present invention, the blowing end 22 is a blower, and the blower is arranged on the side plate 112 and connected to the annular air cavity 21. The annular air cavity 21 is rectangular and close to the partition 12 and the side plate 112. The annular air cavity 21 is located above the material port 121 of the partition 12. Preferably, the air outlet on the annular air cavity 21 can be arranged to be tilted downward so that the air flow can blow to the compound fertilizer particles to complete the cooling work.

[0034] In the embodiment provided by the present invention, the heating end 32 is an electric heating wire, and the electric heating wire is built into the bellows 31. Among them, a temperature controller and a control valve can also be set in the bellows 31, so as to accurately deliver airflow of suitable temperature to the drying area to complete the drying work. The bellows 31 can also be provided with an auxiliary air intake pipe as needed to ensure that the air delivered to the drying area is sufficient. The side wall of the drying area is also provided with an exhaust end, which can be used to discharge the airflow after the drying is completed.

[0035] In the embodiment provided by the present invention, the drying and cooling integrated device further includes a separation mechanism 4, the number of which is two and they are respectively arranged in the drying zone 13 and the cooling zone 14, each of which includes a plurality of separation rods 41, and the plurality of separation rods 41 are arranged vertically and cross-spaced so that the compound fertilizer particles are separated from each other when passing through the drying zone 13 and the cooling zone 14. Among them, the separation rods 41 are vertically arranged on the first inclined plate 1111 and the second inclined plate 1112, and the plurality of separation rods 41 are arranged and distributed in a rectangular shape, and the spacing between the two connected separation rods is greater than the diameter of the compound fertilizer particles, so that the compound fertilizer particles can be dispersed by the separation rods 41 after entering the barrel 11, so that the compound fertilizer particles are fully in contact with the airflow.

[0036] In the embodiment provided by the present invention, the integrated drying and cooling device further comprises a support frame 5, and the support frame 5 is disposed below the first inclined plate 1111 and the second inclined plate 1112, and is used to support and fix the integrated drying and cooling device.

[0037] In the embodiment provided by the present invention, the drying and cooling integrated device further comprises a Y-shaped blanking plate 6, which is arranged at the tail of the feeding barrel 11 to discharge the compound fertilizer particles after drying and cooling. The Y-shaped blanking plate is connected to the tail of the feeding barrel 11 (i.e., the tail of the cooling zone 14), and the Y-shaped blanking plate is also a closed structure and a discharge port is provided on the side away from the feeding barrel 11, which is used to discharge the processed compound fertilizer particles to the next process.

[0038] In the embodiment provided by the present invention, the second inclined plate 1112 is also provided with a plurality of filter holes in the vertical direction, and the filter holes and the separation rods 41 are arranged in an interlaced manner to filter unqualified products in the compound fertilizer particles. The diameter of the filter holes is smaller than the diameter of the compound fertilizer particles, and is used to filter unqualified products that are damaged or have a diameter smaller than the diameter of normal compound fertilizer particles. These compound fertilizer particles need to be returned to the furnace for secondary granulation. A waste recovery hopper 7 is also provided below the cooling zone in the device. The waste recovery hopper 7 is provided below the second inclined plate 1112 and relative to the filter holes to collect unqualified products in the compound fertilizer particles. The interior of the waste recovery hopper adopts an inclined structure to facilitate the deposition of compound fertilizer particle waste, and its discharge port is located at a low position of the waste recovery hopper to discharge waste.

[0039] The working principle of the embodiment provided by the present invention is as follows: the drying and cooling integrated device of the present invention integrates a drying mechanism and a cooling mechanism, and can sequentially dry and cool the compound fertilizer particles after the compound fertilizer is granulated. The drying mechanism and the cooling mechanism both adopt an airflow impact method to process the compound fertilizer particles. After the compound fertilizer enters the material barrel, hot air and cold air are respectively transported to the drying area and the cooling area. At the same time, a circulating pipeline structure is adopted to connect the drying area and the cooling area so as to circulate the hot air generated during the cooling process to the drying area, thereby effectively utilizing the excess heat energy during the cooling process, thereby reducing the energy consumption during the drying process. At the same time, separation mechanisms are arranged in the drying area and the cooling area, so that the compound fertilizer particles can be separated from each other during the movement, ensuring that the compound fertilizer particles and the airflow can fully contact each other, thereby quickly completing the drying and cooling work. Compared with traditional independently operated drying and cooling equipment, the drying and cooling processes are more closely connected, which can not only reduce the floor space of the compound fertilizer production line, but also make full use of the excess energy in the compound fertilizer production and reduce the energy consumption of equipment operation.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A drying and cooling integrated device for the production and processing of compound fertilizers, characterized in that: include: A transport mechanism, wherein the transport mechanism comprises a feeding barrel and a partition, wherein the feeding barrel is tilted and has openings at both ends, and is used to transport compound fertilizer particles, wherein the partition is built into the feeding barrel and divides the feeding barrel into a drying area and a cooling area, wherein the drying area is located above the cooling area, and the partition is also provided with a feeding port in the horizontal direction, which is used to connect the drying area and the cooling area, so that the compound fertilizer particles pass through the drying area and the cooling area in sequence after entering the feeding barrel; A cooling mechanism, the cooling mechanism comprising an annular air cavity and an air blowing end, the annular air cavity is built into the cooling zone and has a plurality of air outlet holes opened along the circumference, the air blowing end is arranged outside the material passing barrel and connected to the annular air cavity, and is used to input cold air into the annular air cavity; A drying mechanism, the drying mechanism comprising a bellows, a heating end and a circulating air duct, the bellows being arranged above the material passing cylinder and connected to the drying area, the heating end being built into the bellows and used for heating the airflow in the bellows so as to input hot air into the drying area, one end of the circulating air duct being connected to the cooling area and the other end being connected to the drying area, and being used for circulating the airflow in the cooling area to the bellows; A separation mechanism, wherein the number of the separation mechanisms is two and they are respectively arranged in the drying zone and the cooling zone, each of the separation mechanisms comprises a plurality of separation rods, and the plurality of separation rods are arranged vertically and crosswise at intervals, so that the compound fertilizer particles are separated from each other when passing through the drying zone and the cooling zone; Among them, the feeding barrel includes a feeding plate, and the feeding plate includes a first inclined plate and a second inclined plate. The first inclined plate and the second inclined plate are arranged in sequence and inclined to each other. The second inclined plate is also provided with a plurality of filter holes along the vertical direction. The filter holes and the separation rods are staggered to filter out unqualified products in the compound fertilizer particles.

2. The drying and cooling integrated device according to claim 1, characterized in that: It also includes a support frame, and the material passing barrel is obliquely arranged on the support frame.

3. The drying and cooling integrated device according to claim 2, characterized in that: It also includes a Y-shaped unloading plate, which is arranged at the tail end of the feeding barrel and is used to discharge the dried and cooled compound fertilizer particles.

4. The drying and cooling integrated device according to claim 3, characterized in that: The feeding barrel also includes side plates and a top cover. The feeding plate is arranged at an angle. There are two side plates, which are respectively arranged on both sides of the feeding plate to form a circulation channel for the compound fertilizer particles to pass through. The partition is inserted in the circulation channel to divide the circulation channel to form the drying area and the cooling area. The top cover is arranged on the top of the two side plates to seal the top of the circulation channel.

5. The drying and cooling integrated device according to claim 4, characterized in that: The included angle between the first inclined plate and the second inclined plate is 100°-120°, and the separation rod is vertically arranged on the first inclined plate and the second inclined plate.

6. The drying and cooling integrated device according to claim 5, characterized in that: It also includes a waste recovery hopper, which is arranged below the second inclined plate and opposite to the filter hole to collect unqualified products in the compound fertilizer particles.

7. The drying and cooling integrated device according to claim 4, characterized in that: The blowing end is a blower, and the blower is arranged on the side plate and connected to the annular air cavity.

8. The drying and cooling integrated device according to claim 1, characterized in that: The heating end is a heating wire, and the heating wire is built in the bellows.

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