Melting device for high tower granulation

Abstract

The utility model relates to the technical field of high tower granulation, in particular to a melting device for high tower granulation, which comprises a melting kettle, a first servo motor, a first stirring rod, a heater and the like, a first servo motor is mounted on the melting kettle, an output shaft of the first servo motor extends into the melting kettle, a first stirring rod is rotatably connected into the melting kettle, an output shaft of the first servo motor is fixedly connected with the first stirring rod, a heater is rotatably connected to the bottom of the melting kettle, and a heating wire of the heater is located in the first stirring rod. The circulating pipe and the circulating heating pump are arranged to heat the outer side wall of the melting kettle, heat is transmitted into the melting kettle through the outer side wall of the melting kettle, uniform heating of raw materials is achieved, local overheating or insufficient heating of the raw materials is avoided, it is ensured that the temperatures of all parts of the raw materials in the melting kettle are more consistent, and therefore the granulation quality is improved; and the heat preservation plate is further arranged, heat loss can be reduced, and the overall heat efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to high tower granulation technical field, and specifically, relate to a kind of melting device for high tower granulation. BACKGROUND

[0002] High tower granulation is an advanced compound fertilizer production technology, which utilizes the gravitational force of high tower to manufacture fertilizer particles. In this process, liquid fertilizer raw materials are first sprayed from the top of the high tower through specially designed nozzles. During the falling process, the liquid raw materials gradually cool and solidify into granules due to the controlled temperature and humidity conditions inside the tower. The fertilizer particles produced by this method have high strength and uniform particle size, reducing dust generation and caking during storage and transportation. In addition, high tower granulation can also flexibly adjust the formula according to the needs of crops, producing compound fertilizers with different nutrient components, improving the utilization rate of fertilizers and the efficiency of agricultural production.

[0003] The traditional single-layer straight pipe heating structure design leads to a short material flow path, which cannot achieve sufficient heat exchange, and local overheating and carbonization may occur, i.e., some areas of the material may carbonize due to uneven heating. At the same time, there may also be un-melted particles remaining, further reducing the quality and production efficiency of the product. The static heating pipe wall is prone to adhere to coking substances, which not only affects heat transfer but also causes gradual blockage of the pipeline, requiring regular shutdown for manual cleaning, seriously affecting the continuous operation of the production line, increasing maintenance costs and time consumption, and also reducing overall production efficiency. SUMMARY

[0004] To overcome the shortcomings of the above-mentioned prior art, the purpose of the utility model is to provide a melting device for high tower granulation.

[0005] A melting device for high tower granulation, comprising a melting kettle, a first servo motor, a first stirring rod, a heater, a discharge pipe, a mixing assembly, a circulating pipe, a circulating heating pump and a controller. The first servo motor is installed on the melting kettle, and the output shaft of the first servo motor extends into the melting kettle. The first stirring rod is rotatably connected inside the melting kettle, and the output shaft of the first servo motor is fixedly connected to the first stirring rod. The heater is rotatably connected to the bottom of the melting kettle, and the heating wire of the heater is located inside the first stirring rod. The discharge pipe is connected to the bottom of the melting kettle. The mixing assembly is connected to the melting kettle. The circulating pipe, the circulating heating pump and the controller are connected to the outer surface of the melting kettle. The circulating pipe is fixedly connected to the circulating heating pump. The first servo motor, the heater and the circulating heating pump are electrically connected to the controller.

[0006] In a preferred embodiment of the utility model, a heat preservation plate is also included, which is connected to the outer wall of the melting kettle and located between the circulating pipe and the outer wall of the melting kettle.

[0007] In a preferred embodiment of the utility model, still include the bottom scraper and the side scraper, the first stirring rod bottom is connected with at least two bottom scrapers, and the side of the bottom scraper away from the first stirring rod is connected with the side scraper.

[0008] In a preferred embodiment of the utility model, the bottom scraper is in contact with the bottom of the melting kettle, and the side scraper is in contact with the inner side wall of the melting kettle.

[0009] In a preferred embodiment of the utility model, the mixing assembly includes a fixing frame, a mixing tank, a feeding pipe, a second servo motor and a second stirring rod, the top of the melting kettle is connected with the fixing frame, the mixing tank is connected on the fixing frame, the feeding pipe is connected on the mixing tank, the mixing tank is communicated with the melting kettle, the second servo motor is installed on the mixing tank, the output shaft of the second servo motor extends into the mixing tank, and the second stirring rod is rotatably connected in the mixing tank.

[0010] In a preferred embodiment of the utility model, the mixing assembly further includes a spiral conveying rod, the bottom of the second stirring rod is connected with the spiral conveying rod, and the spiral conveying rod is located at the communication position of the mixing tank and the melting kettle.

[0011] Compared with the prior art, the utility model has the following advantages: the utility model is provided with a circulating pipe and a circulating heating pump, the outer side wall of the melting kettle is heated, heat is transmitted into the inside through the outer side wall of the melting kettle, uniform heating of raw materials is realized, the situation that raw materials are locally overheated or insufficiently heated is avoided, the temperature of raw materials in each part of the melting kettle is more consistent, the granulation quality is improved, and the utility model is further provided with a heat preservation plate, heat loss can be reduced, and the overall thermal efficiency is improved. DRAWINGS

[0012] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0013] Figure 2 It is a melting kettle sectional view schematic view of the utility model.

[0014] Figure 3 It is a first stirring rod, heater and bottom scraper three-dimensional structure schematic view of the utility model.

[0015] Figure 4 It is a mixing tank sectional view schematic view of the utility model.

[0016] The marks of each component in the drawings are as follows: 1-melting kettle, 2-first servo motor, 3-first stirring rod, 4-heater, 41-discharge pipe, 5-bottom scraper, 6-side scraper, 7-fixing frame, 8-mixing tank, 9-feeding pipe, 10-second servo motor, 11-second stirring rod, 12-spiral conveying rod, 13-heat preservation plate, 14-circulating pipe, 15-circulating heating pump, 16-controller. DETAILED DESCRIPTION

[0017] Although this invention may be described with respect to a particular application or industry, those skilled in the art will recognize its broader applicability. Those skilled in the art will understand that terms such as "above," "below," "upward," "downward," etc., are used to describe the drawings and not to indicate a limitation on the scope of the invention as defined by the appended claims. Any numerical designations such as "first" or "second" are merely illustrative and not intended to limit the scope of the invention in any way.

[0018] A melting device for high-tower granulation, such as Figures 1-4 As shown, the system includes a melting vessel 1, a first servo motor 2, a first stirring rod 3, a heater 4, a discharge pipe 41, a mixing assembly, a circulation pipe 14, a circulating heating pump 15, a controller 16, a heat preservation plate 13, a bottom scraper 5, and a side scraper 6. The first servo motor 2 is mounted on the top of the melting vessel 1, and its output shaft extends into the melting vessel 1. The first stirring rod 3 is rotatably connected inside the melting vessel 1, and its output shaft is fixedly connected to the first stirring rod 3. The heater 4 is rotatably connected to the bottom of the melting vessel 1, and its heating wire is located inside the first stirring rod 3. The discharge pipe 41 is fixedly connected to the bottom of the melting vessel 1. The melting vessel 1 is connected to a mixing assembly at the top. A circulation pipe 14, a circulation heating pump 15, and a controller 16 are fixedly connected to the outer surface of the melting vessel 1. The circulation pipe 14 is fixedly connected to the circulation heating pump 15. The first servo motor 2, the heater 4, and the circulation heating pump 15 are all electrically connected to the controller 16. An insulation plate 13 is fixedly connected to the outer wall of the melting vessel 1. The circulation pipe 14 is located between the insulation plate 13 and the outer wall of the melting vessel 1. Two bottom scrapers 5 are fixedly connected to the bottom of the first stirring rod 3. A side scraper 6 is fixedly connected to the side of the bottom scraper 5 away from the first stirring rod 3. The bottom scraper 5 contacts the bottom of the melting vessel 1, and the side scraper 6 contacts the inner side wall of the melting vessel 1.

[0019] like Figures 1-4 As shown, the mixing assembly includes a fixed frame 7, a mixing tank 8, a feed pipe 9, a second servo motor 10, a second stirring rod 11, and a screw conveyor 12. The fixed frame 7 is fixedly connected to the top of the melting vessel 1, the mixing tank 8 is fixedly connected to the top of the fixed frame 7, the feed pipe 9 is fixedly connected to the top of the mixing tank 8, the feed pipe 9 communicates with the mixing tank 8, the mixing tank 8 communicates with the melting vessel 1, the second servo motor 10 is installed on the top of the mixing tank 8, the output shaft of the second servo motor 10 extends into the mixing tank 8, the second stirring rod 11 is rotatably connected inside the mixing tank 8, and the screw conveyor 12 is fixedly connected to the bottom of the second stirring rod 11. The screw conveyor 12 is located at the communication point between the mixing tank 8 and the melting vessel 1.

[0020] At the beginning, the heat-conducting liquid is added in the circulating pipe 14, when the high tower granulation is carried out, one or more raw materials are poured into the mixing tank 8 through the feeding pipe 9, the second stirring rod 11 is driven to rotate by the second servo motor 10, the raw materials in the mixing tank 8 are fully mixed, when the spiral conveying rod 12 rotates, the raw materials in the mixing tank 8 are discharged into the melting kettle 1, the rotation speed of the spiral conveying rod 12 can be controlled by the second servo motor 10 to adjust the speed of the raw materials discharged into the melting kettle 1, and the spiral conveying rod 12 can control whether the raw materials are discharged or not, when the raw materials in the melting kettle 1 are enough, the first stirring rod 3 is heated by the heater 4, at the same time, the first stirring rod 3 is driven to rotate by the first servo motor 2, so that the first stirring rod 3 heats and stirs the raw materials in the melting kettle 1, the raw materials are gradually melted, the bottom scraper 5 can scrape the raw materials adhered to the bottom of the melting kettle 1, the side scraper 6 can scrape the raw materials adhered to the side wall of the melting kettle 1, so that the raw materials adhered to the inner wall of the melting kettle 1 are avoided to cause the heating efficiency to be reduced, when the raw materials in the melting kettle 1 are heated and melted, the heat-conducting liquid in the circulating pipe 14 is heated by the circulating heating pump 15, so that the heat-conducting liquid circulates in the circulating pipe 14 continuously, so that the outer side wall of the melting kettle 1 is heated, the heat is transmitted into the inside through the outer side wall of the melting kettle 1, the uniform heating of the raw materials is realized, the situation that the raw materials are locally overheated or insufficiently heated is avoided, the temperature of the raw materials in each part of the melting kettle 1 is more uniform, so that the granulation quality is improved, the opportunity that the raw materials directly contact with the heating surface is reduced, which not only helps to keep the inside of the equipment clean and prolong the service life of the equipment, but also reduces the downtime cleaning time of the melting device and improves the production continuity, under the joint action of the heat preservation plates 13, the heat loss is reduced and the overall thermal efficiency is improved, the melted raw materials are discharged through the discharge pipe 41 for subsequent production.

[0021] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the above-mentioned embodiments, within the knowledge range of the person skilled in the art, various changes can be made without departing from the purpose of the utility model.

Claims

1. A melting device for high-tower granulation, comprising a melting vessel (1), a first servo motor (2), and a first stirring rod (3), wherein the first servo motor (2) is mounted on the melting vessel (1), the output shaft of the first servo motor (2) extends into the melting vessel (1), and the first stirring rod (3) is rotatably connected inside the melting vessel (1), and the output shaft of the first servo motor is fixedly connected to the first stirring rod (3), characterized in that, The heater (4), the discharge pipe (41), the mixing assembly, the circulating pipe (14), the circulating heating pump (15) and the controller (16) are further included, the heater (4) is rotatably connected to the bottom of the melting kettle (1), the heating wire of the heater (4) is located in the first stirring rod (3), the discharge pipe (41) is connected to the bottom of the melting kettle (1), the mixing assembly is connected to the melting kettle (1), the circulating pipe (14), the circulating heating pump (15) and the controller (16) are connected to the outer surface of the melting kettle (1), the circulating pipe (14) is fixedly connected with the circulating heating pump (15), the first servo motor (2) and the heater (4) are electrically connected with the controller (16).

2. A melting device for a prilling tower according to claim 1, characterized in that The heat preservation plate (13) is further included, the heat preservation plate (13) is connected to the outer wall of the melting kettle (1), and the circulating pipe (14) is located between the heat preservation plate (13) and the outer wall of the melting kettle (1).

3. A melting device for a prilling tower according to claim 2, characterized in that The bottom scraper (5) and the side scraper (6) are further included, at least two bottom scrapers (5) are connected to the bottom of the first stirring rod (3), and the side scraper (6) is connected to the side, away from the first stirring rod (3), of each bottom scraper (5).

4. A melting device for a prilling tower according to claim 3, characterized in that The bottom scraper (5) is in contact with the inner bottom of the melting kettle (1), and the side scraper (6) is in contact with the inner side wall of the melting kettle (1).

5. A melting device for prilling in a high tower according to claim 4, characterized in that The mixing assembly includes the fixing frame (7), the mixing tank (8), the feeding pipe (9), the second servo motor (10) and the second stirring rod (11), the fixing frame (7) is connected to the top of the melting kettle (1), the mixing tank (8) is connected to the fixing frame (7), the feeding pipe (9) is connected to the mixing tank (8), the mixing tank (8) is communicated with the melting kettle (1), the second servo motor (10) is installed on the mixing tank (8), the output shaft of the second servo motor (10) extends into the mixing tank (8), and the second stirring rod (11) is rotatably connected in the mixing tank (8).

6. A melting device for prilling in a high tower according to claim 5, characterized in that The mixing assembly further includes the spiral conveying rod (12), the spiral conveying rod (12) is connected to the bottom of the second stirring rod (11), and the spiral conveying rod (12) is located at the communication position of the mixing tank (8) and the melting kettle (1).

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