Spray drying tower

Abstract

The utility model relates to the technical field of drying equipment, in particular to a spray drying tower which comprises a drying tower body, an atomizer and an air feeder, the atomizer is arranged at the upper end of the drying tower body, and the lower end of the atomizer is communicated with an inner cavity of the drying tower body. An air uniformizing pipeline is arranged at the upper end of the drying tower body, the air uniformizing pipeline comprises a plurality of annular pipes which are concentrically arranged, every two adjacent annular pipes are communicated through a pipeline, and each annular pipe is provided with a plurality of air outlets with downward openings; the air uniformizing pipeline is connected with an air heater through an air inlet pipe, the air heater is communicated with an air feeder, and a check valve is arranged on the side, close to the drying tower body, of the air inlet pipe. According to the utility model, by arranging the air equalizing pipeline, the distribution of hot air can be controlled, so that atomized raw materials can be fully and uniformly dried in the drying tower body, and the drying efficiency is improved. The check valve is arranged on one side of the air inlet pipe, so that material dust is prevented from being poured back into the air duct during production, and cleaning difficulty is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, and more specifically to a spray drying tower. Background Art

[0002] Spray drying is a method of systematically applying technology to material drying. After the thin material is atomized, it comes into contact with hot air in a drying chamber, rapidly vaporizing the moisture to produce a dry product. Using a spray drying tower, solutions and emulsions can be directly dried into powdered or granular products, eliminating evaporation and pulverization processes.

[0003] The hot air discharge of the existing spray drying tower is uneven, which makes the atomized material in the spray drying tower dry unevenly, affecting production efficiency. The material is easy to stick to the inner wall of the drying tower, affecting production efficiency.

[0004] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0005] In order to overcome the deficiencies in the prior art, a spray drying tower is provided which dries evenly and is not prone to sticking.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A spray drying tower comprises a drying tower body, an atomizer, and a blower. The atomizer is disposed at the upper end of the drying tower body, the upper end of the atomizer being connected to a feed pipe, and the lower end of the atomizer being in communication with the inner cavity of the drying tower body. An air distribution pipeline is disposed at the upper end of the drying tower body, the air distribution pipeline comprising a plurality of concentrically arranged annular tubes, adjacent annular tubes being connected by pipes, and each of the annular tubes being provided with a plurality of downwardly opening air outlets.

[0008] The air equalizing pipeline is connected to an air heater through an air inlet pipe, the air heater is connected to the blower, a check valve is provided on the side of the air inlet pipe close to the drying tower body, the lower end of the drying tower body is connected to a cyclone separator through a discharge pipe, and the drying tower body is provided with a vibrating feeder.

[0009] Preferably, a drying inner cylinder is coaxially arranged in the drying tower body. The drying inner cylinder is a vertically through-structure, and the outer side walls of the upper and lower ends of the drying inner cylinder are respectively sealed and connected to the drying tower body.

[0010] Preferably, the vibrating feeder includes a U-shaped bracket and an exciting rod, one side of the U-shaped bracket is fixedly connected to the drying tower body, the exciting rod is slidably arranged on the U-shaped bracket, one end of the exciting rod passes through the outer wall of the drying tower body and points to the drying inner cylinder, the other end of the exciting rod is fixedly provided with an iron block, and the other side of the U-shaped bracket is provided with an electromagnet that cooperates with the iron block;

[0011] A tension spring is sleeved on the exciting rod, one end of the tension spring is connected to one side of the U-shaped bracket, and the other end of the tension spring is connected to the iron block.

[0012] Preferably, the side wall of the drying tower body is provided with an inspection port.

[0013] Preferably, the cyclone separator includes a primary cyclone separator and a secondary cyclone separator arranged in series.

[0014] Preferably, the air distribution pipeline includes two ring pipes, and the air outlets of the two ring pipes are staggered.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This utility model controls the distribution of hot air by providing an air distribution pipeline, allowing the atomized raw materials to be fully and evenly dried within the drying tower body, thereby improving drying efficiency. A check valve is provided on one side of the air inlet pipe to prevent material dust from flowing back into the air duct during production, making cleaning more difficult.

[0017] 2. The utility model is provided with a vibration feeder, which vibrates the drying inner cylinder to prevent the material from sticking to the drying inner cylinder; the design of the inner and outer cylinders can reduce the noise during vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0021] Figure 3 This is a schematic diagram of the air distribution pipeline structure;

[0022] Figure 4 This is a schematic diagram of the vibration feeder structure.

[0023] In the figure: 1-drying tower body, 1.1-inspection port, 2-atomizer, 3-blower, 4-air balancing pipe, 4.1-annular pipe, 4.2-pipeline, 4.3-air outlet, 5-air inlet pipe, 6-air heater, 7-check valve, 8-discharge pipe, 9-vibrating feeder, 9.1-U-shaped bracket, 9.2-vibrating rod, 9.3-iron block, 9.4-electromagnet, 9.5-tension spring, 10-drying inner cylinder, 11-first-stage cyclone separator, 12-second-stage cyclone separator. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figures 1 to 4 As shown, a spray drying tower includes a drying tower body 1, an atomizer 2 and a blower 3. The atomizer 2 is arranged at the upper end of the drying tower body 1 and is used to atomize the input thin material. The upper end of the atomizer 2 is connected to a feed pipe, and the lower end of the atomizer 2 is connected to the inner cavity of the drying tower body 1. The atomized material enters the drying tower body 1.

[0026] The blower 3 is used to deliver hot air into the drying tower body 1. An air distribution pipeline 4 is provided at the upper end of the drying tower body 1. The air distribution pipeline 4 includes two concentrically arranged annular pipes 4.1. The two annular pipes 4.1 are connected by a pipe 4.2. Both annular pipes 4.1 are provided with multiple air outlets 4.3 with downward openings. The air outlets 4.3 of the two annular pipes 4.1 are staggered.

[0027] The air balancing pipeline 4 is connected to the air heater 6 through the air inlet pipe 5. The air heater 6 is connected to the blower 3. The air delivered by the blower 3 is first heated by the air heater 6 and then enters the air balancing pipeline 4, and then distributed into the drying tower body 1 through the air balancing pipeline 4.

[0028] A drying inner cylinder 10 is coaxially arranged in the drying tower body 1. The drying inner cylinder 10 is a vertical through-structure. The outer side walls of the upper and lower ends of the drying inner cylinder 10 are respectively connected to the drying tower body 1 through rubber sealing rings.

[0029] There are multiple vibrating feeders 9 evenly distributed along the circumference of the drying tower body 1. The vibrating feeders 9 include a U-shaped bracket 9.1 and an excitation rod 9.2. One side of the U-shaped bracket 9.1 is fixedly connected to the drying tower body 1. The excitation rod 9.2 is slidably set on the U-shaped bracket 9.1. One end of the excitation rod 9.2 passes through the outer wall of the drying tower body 1 and points to the drying inner cylinder 10, which is used to excite the drying inner cylinder 10. An iron block 9.3 is fixedly set on the other end of the excitation rod 9.2. An electromagnet 9.4 that cooperates with the iron block 9.3 is set on the other side of the U-shaped bracket 9.1. By controlling the power on and off of the electromagnet 9.4, the position of the iron block 9.3 and the excitation rod 9.2 is controlled. A tension spring 9.5 is sleeved on the excitation rod 9.2. One end of the tension spring 9.5 is connected to one side of the U-shaped bracket 9.1, and the other end of the tension spring 9.5 is connected to the iron block 9.3. When the electromagnet 9.4 is energized, the excitation rod 9.2 is away from the drying inner cylinder 10. When the electromagnet 9.4 is de-energized, the excitation rod 9.2 strikes the drying inner cylinder 10 under the tension of the tension spring 9.5 to prevent the materials from sticking.

[0030] A check valve 7 is installed on the side of the air inlet pipe 5 near the drying tower body 1 to prevent material dust from backflowing into the air duct when production is stopped, making cleaning more difficult. The lower end of the drying tower body 1 is connected to a cyclone separator via a discharge pipe 8. The cyclone separator includes a primary cyclone separator 11 and a secondary cyclone separator 12 arranged in series.

[0031] The side wall of the drying tower body 1 is provided with an inspection port 1.1, which is convenient for maintenance when the equipment fails.

[0032] The above only describes in detail the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in this field, various changes can be made without departing from the purpose of the present invention, and various changes should be included in the scope of protection of the present invention.

Claims

1. A spray drying tower, comprising a drying tower body (1), an atomizer (2) and a blower (3), characterized in that: The atomizer (2) is arranged at the upper end of the drying tower body (1), the upper end of the atomizer (2) is connected to a feed pipe, and the lower end of the atomizer (2) is in communication with the inner cavity of the drying tower body (1); an air distribution pipeline (4) is arranged at the upper end of the drying tower body (1), the air distribution pipeline (4) comprises a plurality of concentrically arranged annular tubes (4.1), adjacent annular tubes (4.1) are in communication with each other via a pipeline (4.2), and each of the annular tubes (4.1) is provided with a plurality of air outlets (4.3) opening downward; The air balancing pipeline (4) is connected to an air heater (6) via an air inlet pipe (5); the air heater (6) is in communication with the air blower (3); a check valve (7) is provided on a side of the air inlet pipe (5) close to the drying tower body (1); a cyclone separator is connected to the lower end of the drying tower body (1) via a discharge pipe (8); and a vibrating discharger (9) is provided on the drying tower body (1).

2. A spray drying tower according to claim 1, characterized in that: A drying inner cylinder (10) is coaxially arranged inside the drying tower body (1). The drying inner cylinder (10) is a vertically through-structure, and the outer side walls at the upper and lower ends of the drying inner cylinder (10) are respectively sealed and connected to the drying tower body (1).

3. A spray drying tower according to claim 1, characterized in that: The vibrating feeder (9) comprises a U-shaped bracket (9.1) and an exciting rod (9.2), one side of the U-shaped bracket (9.1) is fixedly connected to the drying tower body (1), the exciting rod (9.2) is slidably arranged on the U-shaped bracket (9.1), one end of the exciting rod (9.2) penetrates the outer wall of the drying tower body (1) and points to the drying inner cylinder (10), the other end of the exciting rod (9.2) is fixedly provided with an iron block (9.3), and the other side of the U-shaped bracket (9.1) is provided with an electromagnet (9.4) that matches the iron block (9.3); A tension spring (9.5) is sleeved on the excitation rod (9.2), one end of the tension spring (9.5) is connected to one side of the U-shaped bracket (9.1), and the other end of the tension spring (9.5) is connected to the iron block (9.3).

4. A spray drying tower according to claim 1, characterized in that: The side wall of the drying tower body (1) is provided with an inspection opening (1.1).

5. A spray drying tower according to claim 1, characterized in that: The cyclone separator comprises a primary cyclone separator (11) and a secondary cyclone separator (12) which are arranged in series.

6. A spray drying tower according to claim 1, characterized in that: The air distribution pipeline (4) comprises two annular pipes (4.1), and the air outlets (4.3) of the two annular pipes (4.1) are arranged in a staggered manner.

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