Air guide for a spray drying tower

Abstract

The utility model discloses a kind of air guide devices of spray drying tower, it is related to drying tower field, including mounting plate and drying tower tank body, the mounting plate is fixedly connected in drying tower tank body, vertical rotating connection has standpipe on the mounting plate, hot air blower is provided outside the drying tower tank body, the air supply pipe of hot air blower is inserted into drying tower tank body and vertical pipe upper end rotating intercommunication, vertical pipe is vertically penetrated and is provided with inner tube, inner tube upper end is sequentially inserted into hot air blower air supply pipe and drying tower tank body top portion. Advantage lies in: high-temperature gas is transported to strip-shaped shell by hot air blower through standpipe, connecting pipe, then is jetted from multiple directions to drying tower tank body center from spray hole, change traditional one-way air intake mode, make high-temperature gas evenly distribute in radiation shape, substantially increase the contact area of hot air and atomized material, ensure that material can be fully dried in each area in tower, effectively improve product quality stability.

Description

Technical Field

[0001] This utility model relates to the field of drying tower technology, specifically to an air guiding device for a spray drying tower. Background Technology

[0002] In the chemical, food, and pharmaceutical industries, spray drying towers are core equipment for achieving rapid material drying. Their efficiency and product quality depend on the thorough mixing of hot air and atomized material. Existing spray drying towers often use a single air inlet or fixed duct, resulting in unidirectional or locally concentrated flow of hot air within the tower. This leads to uneven contact between the atomized material and the hot air, causing inconsistent drying levels, fluctuations in product quality, poor gas turbulence, and low mixing efficiency between hot air and atomized material. Utility Model Content

[0003] The purpose of this invention is to provide an air guiding device for a spray drying tower in order to solve the above-mentioned problems, as detailed below.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This utility model provides an air guiding device for a spray drying tower, including an installation plate and a drying tower tank. The installation plate is fixedly connected to the drying tower tank. A vertical pipe is vertically and rotatably connected to the installation plate. A hot air fan is installed outside the drying tower tank. The air supply pipe of the hot air fan passes through the drying tower tank and is rotatably connected to the upper end of the vertical pipe. An inner pipe is vertically installed inside the vertical pipe. The upper end of the inner pipe passes through the air supply pipe of the hot air fan and the top of the drying tower tank in sequence. An atomizer is fixedly connected to the top of the drying tower tank. The output end of the atomizer is fixedly connected to the upper end of the inner pipe.

[0006] Several connecting pipes are fixedly connected to the vertical pipe along the radial direction of the drying tower tank. A strip shell is fixedly connected to the end of the connecting pipe away from the vertical pipe. Several spray holes are opened on the surface of the strip shell. The strip shell is along the height direction of the drying tower tank, and the edge of the strip shell is in contact with the inner wall of the drying tower tank.

[0007] The above-mentioned air guiding device for a spray drying tower atomizes the liquid material through an atomizer and delivers high-temperature gas to a vertical pipe through a hot air blower. The vertical pipe inputs the high-temperature gas into each strip shell through several connecting pipes. The strip shell then outputs the high-temperature air to the drying tower tank through spray holes. The high-temperature airflow blows towards the center of the drying tower tank from several directions, which can improve the uniformity of mixing between the high-temperature gas and the atomized material.

[0008] The rotating component drives the connecting pipe to rotate in a circular motion, which in turn drives the strip shell to rotate around the inner wall of the drying tower. This can further enhance gas turbulence, allowing the high-temperature gas to fully contact the material, and also scrape off the material particles adsorbed on the inner wall of the drying tower using the strip shell.

[0009] Preferably, the strip-shaped shell has several spray holes on the side corresponding to the axis of the drying tower tank.

[0010] Preferably, the end face of the strip-shaped shell is an isosceles trapezoid, and the nozzle is located on the narrowest side of the strip-shaped shell.

[0011] Preferably, the connecting pipe is a rigid pipe, and a rotating component is fixedly connected to the drying tower tank to drive the connecting pipe to rotate circumferentially around the vertical pipe.

[0012] Preferably, the rotating assembly includes a gear ring fixedly connected to all the connecting pipes, a motor fixedly connected to the outside of the drying tower tank, a gear fixedly connected to the output shaft of the motor via a connecting shaft, the gear meshing with the gear ring, and the connecting shaft rotatably connected to the drying tower tank.

[0013] Preferably, the vertical pipe, inner pipe, gear ring, and drying tower tank are coaxial.

[0014] Preferably, the inner tube is fixedly connected to the hot air blower's air supply pipe, and the lower end of the inner tube passes through the vertical pipe and is rotatably sealed with the lower end of the vertical pipe.

[0015] Preferably, a mounting column is fixedly connected to the drying tower tank via a mounting bracket, and a spiral blade is fixedly connected to the mounting column.

[0016] Preferably, the spiral blades are centered inside the drying tower tank, and the spray holes correspond to the spiral blades.

[0017] Preferably, the top of the mounting post is designed to be tapered.

[0018] The beneficial effects are:

[0019] 1. High-temperature gas is transported to the strip shell through a hot air blower via a vertical pipe and connecting pipe, and then sprayed into the center of the drying tower tank from multiple directions through nozzles. This changes the traditional unidirectional air intake mode, making the high-temperature gas evenly distributed radially, which greatly increases the contact area between the hot air and the atomized material, ensuring that the material can be fully dried in all areas of the tower, and effectively improving the stability of product quality.

[0020] 2. The rotating component drives the connecting pipe and the strip shell to rotate around the inner wall of the drying tower tank, which drives the hot air to form a dynamic turbulent flow field, prolongs the contact time between the hot air and the material, and promotes the heat and mass transfer process. Compared with the traditional static air guide structure, it can significantly improve drying efficiency, shorten the production cycle, and reduce energy consumption.

[0021] 3. The rotating strip-shaped shell edge is in close contact with the inner wall of the drying tower tank. During the rotation, it can scrape off the material particles adsorbed on the inner wall in real time, avoid the formation of material accumulation, reduce the risk of product contamination caused by material accumulation, and at the same time reduce the frequency of equipment maintenance, ensuring the continuity and efficiency of the production process. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of the spiral blade of this utility model;

[0024] Figure 2 This is a front view structural diagram of the present invention;

[0025] Figure 3 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0026] Figure 4 This is a three-dimensional structural diagram of the rotating component of this utility model.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1. Mounting plate; 2. Vertical pipe; 3. Hot air blower; 4. Atomizer; 5. Inner pipe; 6. Connecting pipe; 7. Strip shell; 8. Spray hole; 9. Rotating assembly; 10. Mounting column; 11. Mounting bracket; 12. Spiral blade; 13. Drying tower tank; 14. Motor; 15. Gear ring; 16. Connecting shaft; 17. Gear. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] See Figures 1-4 As shown, this utility model provides an air guiding device for a spray drying tower, including a mounting plate 1 and a drying tower tank 13. The mounting plate 1 is fixedly connected inside the drying tower tank 13. A vertical pipe 2 is vertically rotatably connected to the mounting plate 1. A hot air blower 3 is installed outside the drying tower tank 13. The air supply pipe of the hot air blower 3 passes through the drying tower tank 13 and is rotatably connected to the upper end of the vertical pipe 2. An inner pipe 5 is vertically installed inside the vertical pipe 2. After the atomizer 4 atomizes the liquid material, it is transported to the drying tower tank 13 through the inner pipe 5 and comes into contact with the hot air distributed from the vertical pipe 2 for drying. The inner pipe 5 is relatively independent from the vertical pipe 2 to avoid the material and hot air mixing in advance during the transportation process, ensuring that the drying process proceeds in an orderly manner. The upper end of the inner pipe 5 passes through the air supply pipe of the hot air blower 3 and the top of the drying tower tank 13 in sequence. An atomizer 4 is fixedly connected to the top of the drying tower tank 13, and the output end of the atomizer 4 is fixedly connected to the upper end of the inner pipe 5.

[0031] The hot air generated by the fan 3 enters the vertical pipe 2 through the air supply pipe. The vertical pipe 2 serves as the main channel for hot air transmission. Its rotatable design provides the necessary conditions for the circular motion of the subsequent connecting pipe 6 and the strip shell 7. Several connecting pipes 6 are fixedly connected to the vertical pipe 2 along the radial direction of the drying tower tank 13. The end of the connecting pipe 6 away from the vertical pipe 2 is fixedly connected to the strip shell 7. Several spray holes 8 are opened on the surface of the strip shell 7. The strip shell 7 is along the height direction of the drying tower tank 13, and the edge of the strip shell 7 is in contact with the inner wall of the drying tower tank 13.

[0032] As an optional implementation, a number of spray holes 8 are provided on one side of the strip shell 7 corresponding to the axis of the drying tower tank 13 to optimize the distribution of hot air in the drying tower tank 13, especially to enhance the amount of hot air in the central area, so as to ensure that the atomized material located in the center of the tower can fully contact the hot air and improve the drying efficiency and uniformity.

[0033] The end face of the strip shell 7 is an isosceles trapezoid, and the nozzle 8 is located on the narrowest face of the strip shell 7. The nozzle 8 being located on the narrowest face allows the hot air to have a high flow rate when it is ejected, which helps the atomized material to mix with the hot air quickly and improves the heat and mass transfer efficiency. At the same time, the isosceles trapezoidal structure also makes it easier for the edges of the strip shell 7 to fit against the inner wall of the drying tower tank 13, enhancing the scraping effect.

[0034] The connecting pipe 6 is a rigid pipe, which ensures that the pipeline will not deform during the hot air transportation process and guarantees the stability of the air path. The rotating component 9 drives the connecting pipe 6 and the strip shell 7 to rotate circumferentially, which on the one hand creates dynamic turbulence in the hot air, enhancing the mixing with the material; on the other hand, the edges of the strip shell 7 are used to scrape off the accumulated material on the inner wall of the drying tower tank 13. The rotating component 9 is fixedly connected to the drying tower tank 13 to drive the connecting pipe 6 to rotate circumferentially around the vertical pipe 2.

[0035] The rotating assembly 9 includes a gear ring 15 fixedly connected to all the connecting pipes 6. A motor 14 is fixedly connected to the outside of the drying tower tank 13. The output shaft of the motor 14 is fixedly connected to a gear 17 through a connecting shaft 16. The gear 17 meshes with the gear ring 15. The connecting shaft 16 is rotatably connected to the drying tower tank 13.

[0036] The vertical pipe 2, inner pipe 5, gear ring 15, and drying tower tank 13 are coaxial.

[0037] The inner tube 5 is fixedly connected to the air supply pipe of the hot air blower 3. The lower end of the inner tube 5 passes through the vertical pipe 2 and rotates to seal with the lower end of the vertical pipe 2.

[0038] Inside the drying tower tank 13, a mounting column 10 is fixedly connected via a mounting bracket 11. A spiral blade 12 is fixedly connected to the mounting column 10. The spiral blade 12 guides the hot air to flow in a spiral, prolonging the residence time of the hot air in the drying tower, allowing the atomized material to fully contact the hot air, thereby improving the drying efficiency and effect.

[0039] The spiral blade 12 is centered inside the drying tower tank 13, and the spray hole 8 corresponds to the spiral blade 12.

[0040] The top of the mounting column 10 is designed in a conical shape to optimize the flow of hot air in the drying tower tank 13, reduce energy loss, ensure that hot air can pass smoothly through the area of ​​the mounting column 10, and fully contact the atomized material to improve the drying effect.

[0041] Using the above structure, the liquid material is atomized by the atomizer 4, and the high-temperature gas is delivered to the vertical pipe 2 by the hot air blower 3. The vertical pipe 2 inputs the high-temperature gas into each strip shell 7 through several connecting pipes 6. The strip shell 7 then outputs the high-temperature air to the drying tower tank 13 through the spray hole 8. The high-temperature airflow blows towards the center of the drying tower tank 13 from several directions, which can improve the uniformity of the mixing between the high-temperature gas and the atomized material.

[0042] The rotating component 9 drives the connecting pipe 6 to move in a circular motion. The connecting pipe 6 can drive the strip shell 7 to rotate around the inner wall of the drying tower tank 13. On the one hand, this can further improve the gas turbulence and make the high-temperature gas fully contact the material. On the other hand, the strip shell 7 can scrape off the material particles adsorbed on the inner wall of the drying tower tank 13.

[0043] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A wind guiding device for a spray drying tower, characterized in that: The equipment includes an installation plate (1) and a drying tower tank (13). The installation plate (1) is fixedly connected inside the drying tower tank (13). A vertical pipe (2) is vertically rotatably connected to the installation plate (1). A hot air blower (3) is installed outside the drying tower tank (13). The air supply pipe of the hot air blower (3) passes through the drying tower tank (13) and is rotatably connected to the upper end of the vertical pipe (2). An inner pipe (5) is vertically installed inside the vertical pipe (2). The upper end of the inner pipe (5) passes through the air supply pipe of the hot air blower (3) and the top of the drying tower tank (13) in sequence. An atomizer (4) is fixedly connected to the top of the drying tower tank (13). The output end of the atomizer (4) is fixedly connected to the upper end of the inner pipe (5). Several connecting pipes (6) are fixedly connected to the vertical pipe (2) radially along the drying tower tank (13). A strip shell (7) is fixedly connected to one end of the connecting pipe (6) away from the vertical pipe (2). Several spray holes (8) are opened on the surface of the strip shell (7). The strip shell (7) is along the height direction of the drying tower tank (13), and the edge of the strip shell (7) is in contact with the inner wall of the drying tower tank (13).

2. The air guiding device for a spray drying tower according to claim 1, characterized in that: The strip shell (7) has several spray holes (8) on the side corresponding to the axis of the drying tower tank (13).

3. The air guiding device for a spray drying tower according to claim 2, characterized in that: The end face of the strip shell (7) is an isosceles trapezoid, and the nozzle (8) is located on the narrowest side of the strip shell (7).

4. The air guiding device for a spray drying tower according to claim 1, characterized in that: The connecting pipe (6) is a rigid pipe, and a rotating component (9) is fixedly connected to the drying tower tank (13) to drive the connecting pipe (6) to rotate circumferentially around the vertical pipe (2).

5. The air guiding device for a spray drying tower according to claim 4, characterized in that: The rotating assembly (9) includes a gear ring (15) fixedly connected to all the connecting pipes (6), a motor (14) is fixedly connected to the outside of the drying tower tank (13), the output shaft of the motor (14) is fixedly connected to a gear (17) through a connecting shaft (16), the gear (17) meshes with the gear ring (15), and the connecting shaft (16) is rotatably connected to the drying tower tank (13).

6. The air guiding device for a spray drying tower according to claim 5, characterized in that: The vertical pipe (2), inner pipe (5), gear ring (15) and drying tower tank (13) are coaxial.

7. The air guiding device for a spray drying tower according to claim 6, characterized in that: The inner tube (5) is fixedly connected to the air supply pipe of the hot air blower (3), and the lower end of the inner tube (5) passes through the vertical pipe (2) and rotates and seals with the lower end of the vertical pipe (2).

8. The air guiding device for a spray drying tower according to claim 1, characterized in that: The drying tower tank (13) is fixedly connected to a mounting column (10) by a mounting bracket (11), and a spiral blade (12) is fixedly connected to the mounting column (10).

9. The air guiding device for a spray drying tower according to claim 8, characterized in that: The spiral blade (12) is centered inside the drying tower tank (13), and the nozzle (8) corresponds to the spiral blade (12).

10. The air guiding device for a spray drying tower according to claim 8, characterized in that: The top of the mounting column (10) is designed to be conical.

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