Microsphere spray drying equipment

Abstract

The utility model discloses microsphere spray drying equipment, and belongs to the technical field of drying equipment. The multiple groups of hot air pipes are arranged on the inner wall of the barrel body, and the hot air nozzles arranged on the hot air pipes face the material nozzles used for spraying the materials, so that when the materials are sprayed out of the material nozzles, the hot air nozzles arranged at different heights on the upper side can heat the materials sprayed out of the material nozzles at the same time, and rapid drying is achieved; the dryness of the particles is increased; the hot air nozzles on the hot air pipes close to the lower side are all arranged towards the stirring shaft, and the dried particles on the top can be continuously heated and dried in the falling process, so that the finally discharged particles have good dryness.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of drying equipment, specifically relates to a microsphere spray drying equipment. BACKGROUND

[0002] Spray drying is a method of applying systematic technology to material drying, in which dilute material is atomized in a drying chamber and water is rapidly vaporized in contact with hot air, thus obtaining a dried product. Therefore, spray drying is an ideal process when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet precise standards.

[0003] In the use process of the existing spray dryer, some mist droplets are difficult to contact with hot air during the drying process, which leads to a decrease in drying uniformity. Some mist droplets that do not fully contact with hot air are discharged with some dried material particles, resulting in a larger particle humidity. Therefore, it is necessary to provide a spray dryer with uniform drying to solve the above problems. SUMMARY

[0004] The utility model mainly solves the technical problem existing in the prior art, and provides a microsphere spray drying equipment.

[0005] The above technical problems of the utility model are mainly solved by the following technical scheme: a microsphere spray drying equipment, including the cylinder, the upper and lower ends of the cylinder are respectively provided with the top cover and the bottom cover, the top of the top cover is provided with the driving motor, the middle position of the top cover is equipped with a stirring shaft, the stirring shaft is rotatably connected with the top cover, and the driving motor is fixedly connected with the stirring shaft, the lower end of the inside of the cylinder is provided with a filter screen, the edge of the filter screen is fixedly connected to the inner wall of the cylinder, the middle position of the filter screen is concave downward, the bottom of the stirring shaft is provided with a crushing block, the inner wall of the cylinder is equally provided with a plurality of groups of hot air pipes, a plurality of hot air nozzles are annularly arranged on each group of hot air pipes along the axis of the cylinder, a plurality of groups of hot air pipes are in communication with each other and extend to the outside of the cylinder, the lower end of the top cover is provided with a group of liquid inlet pipes, the inlet of the liquid inlet pipe is arranged outside the top cover, a plurality of material nozzles are annularly arranged on the liquid inlet pipe, the material nozzles are arranged towards the bottom of the cylinder, the hot air nozzles on the upper hot air pipes are all arranged towards the material nozzles, and the hot air nozzles on the lower hot air pipes are all arranged towards the stirring shaft.

[0006] Preferably, an exhaust pipe is arranged on the top cover.

[0007] Preferably, a gap is formed between the bottom of the crushing block and the filter screen.

[0008] Preferably, the lower surface of the crushed block is an arc surface that matches the curvature of the filter screen, and the edge of the crushed block is beveled.

[0009] The beneficial effects of this invention are as follows: By setting multiple sets of hot air pipes on the inner wall of the cylinder and aligning the hot air nozzles on the pipes with the material nozzles for spraying the material, the hot air nozzles at different heights on the upper side can simultaneously heat the material sprayed from the material nozzle, achieving rapid drying and increasing the dryness of the particles; by aligning the hot air nozzles on the lower side of the hot air pipes with the stirring shaft, the particles dried at the top will continue to be heated and dried during their descent, resulting in better dryness of the finally discharged particles. Attached Figure Description

[0010] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0011] Fig. 2 This is a schematic diagram of the structure of the liquid inlet pipe and material nozzle of this utility model;

[0012] Fig. 3 This is a schematic diagram of the bevel structure of this utility model.

[0013] In the diagram: 1. Cylinder; 2. Top cover; 3. Bottom cover; 4. Drive motor; 5. Stirring shaft; 6. Filter screen; 7. Crushed pieces; 8. Hot air pipe; 9. Hot air nozzle; 10. Liquid inlet pipe; 11. Material nozzle; 12. Exhaust pipe; 13. Bevel. Detailed Implementation

[0014] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0015] Example: A microsphere spray drying device, such as Figs. 1-3As shown, the device includes a cylindrical body 1, with a top cover 2 and a bottom cover 3 at its upper and lower ends, respectively. A drive motor 4 is mounted on the top of the top cover 2, and a stirring shaft 5 is located in the middle of the top cover 2. The stirring shaft 5 is rotatably connected to the top cover 2, while the drive motor 4 is fixedly connected to the stirring shaft 5. A filter screen 6 is located at the lower end of the interior of the cylindrical body 1, with its edge fixedly connected to the inner wall of the cylindrical body 1. The middle of the filter screen 6 is recessed downwards. A crushing block 7 is located at the bottom of the stirring shaft 5. Multiple sets of hot air are evenly spaced on the inner wall of the cylindrical body 1. Each set of hot air pipes 8 has multiple hot air nozzles 9 arranged in a ring array along the axis of the cylinder 1. The multiple sets of hot air pipes 8 are interconnected and extend to the outside of the cylinder 1. The lower end of the top cover 2 is provided with a set of liquid inlet pipes 10. The inlet of the liquid inlet pipes 10 is located outside the top cover 2. Multiple material nozzles 11 are arranged in a ring array on the liquid inlet pipes 10. The material nozzles 11 are set towards the bottom of the cylinder 1. The hot air nozzles 9 on the upper side of the hot air pipes 8 are all set towards the material nozzles 11, and the hot air nozzles 9 on the lower side of the hot air pipes 8 are all set towards the stirring shaft 5.

[0016] The top cover 2 is provided with an exhaust pipe 12; there is a gap between the bottom of the crushing block 7 and the filter screen 6; the lower surface of the crushing block 7 is an arc surface with the same curvature as the filter screen 6, and a bevel 13 is provided at the edge of the crushing block 7.

[0017] The principle of this invention: The material enters through the liquid inlet pipe 10 and is evenly sprayed out from the material nozzle 11. Hot air enters through the hot air pipe 8 and is sprayed out from the hot air nozzle 9. The upper hot air nozzle 9 is directly aligned with the material nozzle 11. When the material is sprayed out, it comes into direct contact with the hot air, achieving rapid drying and free fall. When some mist-like droplets that have not fully contacted the hot air fall, the lower hot air nozzle 9 will continue to heat and dry them, making the final formed particles relatively dry. After drying, the particles will fall onto the filter screen 6. Particles of suitable diameter will fall directly onto the bottom cover 3 for discharge. Larger particles will be crushed by the rotation of the crushing block 7 and will eventually fall onto the bottom cover 3 for discharge.

[0018] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A microsphere spray drying device, comprising a cylindrical body (1), wherein a top cover (2) and a bottom cover (3) are respectively provided at the upper and lower ends of the cylindrical body (1), characterized in that: A drive motor (4) is provided on the top of the top cover (2). A stirring shaft (5) is provided in the middle of the top cover (2). The stirring shaft (5) is rotatably connected to the top cover (2). At the same time, the drive motor (4) is fixedly connected to the stirring shaft (5). A filter screen (6) is provided at the lower end of the inside of the cylinder (1). The edge of the filter screen (6) is fixedly connected to the inner wall of the cylinder (1). The middle of the filter screen (6) is recessed downward. A crushing block (7) is provided at the bottom of the stirring shaft (5). Multiple sets of hot air pipes (8) are equidistantly arranged on the inner wall of the cylinder (1). Each set of hot air pipes (8) runs along the cylinder. Multiple hot air nozzles (9) are installed in a ring array along the axis of the body (1). Multiple sets of hot air pipes (8) are interconnected and extend to the outside of the cylinder (1). A set of liquid inlet pipes (10) is provided at the lower end of the top cover (2). The inlet of the liquid inlet pipes (10) is located outside the top cover (2). Multiple material nozzles (11) are arranged in a ring array on the liquid inlet pipes (10). The material nozzles (11) are set towards the bottom of the cylinder (1). The hot air nozzles (9) on the upper side of the hot air pipes (8) are all set towards the material nozzles (11). The hot air nozzles (9) on the lower side of the hot air pipes (8) are all set towards the stirring shaft (5).

2. The microsphere spray drying equipment according to claim 1, characterized in that: The top cover (2) is provided with an exhaust pipe (12).

3. The microsphere spray drying equipment according to claim 1, characterized in that: There is a gap between the bottom of the crushed block (7) and the filter screen (6).

4. The microsphere spray drying equipment according to claim 1, characterized in that: The lower surface of the crushed block (7) is an arc surface with the same curvature as the filter screen (6), and a bevel (13) is provided at the edge of the crushed block (7).

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