CN217988382U

CN217988382U - Spray drying tower

Info

Publication number: CN217988382U
Application number: CN202221940397.9U
Authority: CN
Inventors: 向红跃; 刘廷舜
Original assignee: Hangzhou Asia Pacific Chemical Equipment Co ltd
Current assignee: Hangzhou Asia Pacific Chemical Equipment Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-12-09
Anticipated expiration: 2032-07-26

Abstract

A hot air ring pipe surrounding the circumference of the spray drying tower is arranged at the bottom of the tower body, a total hot air inlet is formed in the outer side of the hot air ring pipe, a plurality of drainage air boxes used for uniformly introducing hot air into the tower body in the hot air ring pipe are arranged on the lower side of the hot air ring pipe, a hot air inlet adjusting device is arranged at an air opening between each drainage air box and the corresponding hot air ring pipe, a hot air outlet of each drainage air box is communicated into the tower body, a plurality of atomizing spray guns used for spraying materials are arranged in the tower body, a discharge opening is formed in the bottom of the tower body, and a tail gas outlet is formed in the upper portion of the tower body. Compared with the prior art, the utility model keeps the balance of the air quantity and the air pressure of each air inlet through the adjustment of the hot air adjusting device of the spray drying tower, realizes the uniform distribution of the hot air in the tower body, and ensures the product quality; the spray gun of the spray drying tower is designed in a multilayer annular mode, so that fog drops are fully covered in the drying tower; thereby improving the thermal efficiency of hot air utilization and improving the production capacity of the spray drying tower.

Description

Spray drying tower

Technical Field

The utility model relates to a chemical industry ground paste product processing technology field, in particular to spray drying tower.

Background

In the production process, hot air entering a tower opening close to a hot air inlet main pipe enters a tower to a great extent; the hot air far away from the position of the hot air inlet main pipe enters the tower less hot air, the heat distribution is uneven, the larger the diameter of the spray drying tower is, the more uneven the hot air distribution is, and the quality control of the product is not facilitated; in addition, the traditional tower body does not consider the layout of a spray gun, a large amount of hot air leaks out from gaps which cannot be covered by fog drops and is directly discharged from a tail gas outlet at the upper part, and the heat is not fully utilized.

SUMMERY OF THE UTILITY MODEL

To prior art defect more than exists, the utility model provides a spray drying tower as follows:

the technical scheme of the utility model is realized like this:

the utility model provides a spray drying tower, includes the tower body, the tower body bottom is provided with the hot-blast ring canal around its a week, the hot-blast ring canal outside is provided with total hot-blast import, hot-blast ring canal downside is provided with a plurality of and is arranged in the hot-blast ring canal hot-blast drainage bellows that evenly introduces the tower body, the wind gap between drainage bellows and the hot-blast ring canal is provided with hot-blast import adjusting device, the hot air exitus of drainage bellows communicates to in the tower body, be provided with a plurality of atomizing spray guns that are used for the material to spout in the tower body, the tower body bottom is provided with the discharge gate, and tower body upper portion is provided with the tail gas outlet.

Preferably, the hot air inlet adjusting device comprises an adjusting screw, a limiting slide way and an air door adjusting plate, the limiting slide way is arranged at an air port between the drainage air box and the hot air ring pipe, and the adjusting screw is connected with the air door adjusting plate in a driving mode and can enable the air door adjusting plate to move back and forth along the limiting slide way.

Preferably, a wind pressure measurer is arranged in each of the drainage wind boxes.

Preferably, the atomizing spray guns are arranged in multiple layers, each layer of atomizing spray guns are arranged in an annular mode with different diameters, the number of the nozzles of the atomizing spray guns is increased from small to large according to the diameter of the atomizing spray guns, and the spraying range of the nozzles of the atomizing spray guns with the largest diameter is from the small to the large.

Preferably, the discharge hole is a conical discharge hole.

Preferably, the bottom of the drainage air box is provided with a base.

Compared with the prior art, the utility model discloses there is following beneficial effect:

the utility model discloses a spray drying tower, through the adjustment of spray drying tower hot-blast adjusting device, keep the equilibrium of every air intake amount of wind and wind pressure, realize the even distribution of hot-blast in the tower body, ensured product quality; the spray gun of the spray drying tower is designed in a multilayer annular mode, so that fog drops are fully covered in the drying tower; thereby improving the thermal efficiency of hot air utilization and improving the production capacity of the spray drying tower.

Drawings

FIG. 1 is a schematic structural view of a spray drying tower of the present invention;

FIG. 2 is a schematic view of the structure of the drainage bellows of the present invention;

FIG. 3 is a schematic structural view of the hot air inlet adjusting device of the present invention;

figure 4 is the spouting effect schematic diagram that the utility model discloses multilayer atomizing spray gun set up.

In the figure: the device comprises a tower body 1, a hot air ring pipe 2, a total hot air inlet 3, a drainage air box 4, an air port 5, a hot air outlet 6, an atomizing spray gun 7, a discharge port 8, a tail gas outlet 9, an adjusting screw rod 10, a limiting slide rail 11, an air door adjusting plate 12, an air pressure measurer 13, a nozzle 14 and a base 15.

Detailed Description

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown.

As shown in fig. 1 and 2, a spray drying tower comprises a tower body 1, a hot air ring pipe 2 surrounding the tower body 1 is arranged at the bottom of the tower body 1, a total hot air inlet 3 is arranged at the outer side of the hot air ring pipe 2, a plurality of drainage air boxes 4 for uniformly introducing hot air in the hot air ring pipe 2 into the tower body 1 are arranged at the lower side of the hot air ring pipe 2, a hot air inlet adjusting device is arranged at an air port 5 between the drainage air boxes 4 and the hot air ring pipe 2, a hot air outlet 6 of each drainage air box 4 is communicated into the tower body 1, a plurality of atomizing spray guns 7 for spraying materials are arranged in the tower body 1, a discharge port 8 is arranged at the bottom of the tower body 1, the discharge port 8 is a conical discharge port, so that dried materials can be discharged out of the tower body, and a tail gas outlet 9 is arranged at the upper part of the tower body 1. As shown in fig. 3, the hot air inlet adjusting device includes an adjusting screw 10, a limiting slide 11 and an air door adjusting plate 12, the limiting slide 11 is disposed at the air inlet 5 between the drainage air box 4 and the hot air circular duct 2, the adjusting screw 10 is connected to the air door adjusting plate 12 in a driving manner and enables the air door adjusting plate 12 to move back and forth along the limiting slide 11, and the air door adjusting plate 12 adjusts the size of the air inlet 5 while moving back and forth along the limiting slide 11. All be provided with wind pressure caliber 13 in the drainage bellows 4, wind pressure caliber 13 is used for the wind pressure in each drainage bellows 4 of real-time monitoring, if there is the wind pressure inconsistent, then adjusts adjusting screw 10 in the corresponding drainage bellows 4, changes corresponding wind gap 5 to make the wind pressure in this drainage bellows 4 unanimous with other. The atomizing spray gun 7 is provided with a plurality of layers, each layer of atomizing spray gun 7 is in annular arrangement with different diameters, the atomizing spray gun 7 is provided with nozzles 14 from small to large according to the diameter from small to large, the atomizing spray gun 7 with the largest diameter has the spraying range of the nozzles 14 from the upper nozzle to the tower wall, and therefore no guniting dead angle is formed in the tower body. The bottom of the drainage air box 4 is provided with a base 15, so that the drainage air box 4 is convenient to install.

The working process comprises the following steps: hot air for drying slurry enters a hot air ring pipe 2 through a total hot air inlet 3, the hot air ring pipe 2 surrounds a tower body 1 for one circle, the hot air is distributed through corresponding drainage air boxes 4 and then enters the tower body 1 for spray drying, in the production debugging stage, under the condition of different total air volumes, each tower inlet air port 5 is preliminarily set through an adjusting screw rod 10, meanwhile, the air volume of each air port 5 is measured through a static pressure measuring port by an air velocity measuring instrument, and the air pressure of each air port is measured by a pitot tube (an air pressure measuring instrument 13); forming original data, analyzing the data, and adjusting the size of the tuyere 5 needing to be adjusted again; meanwhile, the air quantity and the air pressure of each air port 5 are measured again, so that the air quantity and the air pressure of each air port are basically kept consistent; and finally, carrying out online test, testing each air port 5 in the actual production process, and carrying out online fine adjustment if the requirement cannot be met. Meanwhile, the atomizing spray gun 7 is provided with a spray gun matrix according to the specific gravity requirement of the product, as shown in fig. 4, an annular spray gun matrix with different diameters and a multi-layer spray gun layout are adopted, and atomizing nozzles with different specifications are installed according to different positions of the spray guns; the full coverage of the atomized fog drops in the tower is realized. The size of the air port 5 and the matrix of the atomizing spray gun 7 are adjusted simultaneously, supplement each other and have better energy-saving effect.

In addition, 12-24 drainage wind boxes 4 are arranged on the tower bodies 1 with different diameters; the hot air entering the tower moves from bottom to top, the atomizing spray gun 7 is arranged at the upper part of the tower body 1, the high-pressure slurry is sprayed from top to bottom and contacts with the upward hot air to form countercurrent contact heat transfer, and the dried material falls on the conical bottom of the powder spraying drying tower to be discharged; a hot air inlet adjusting device is arranged in the hot air ring pipe, the size of the hot air inlet can be adjusted off line and on line, and the air quantity and the air pressure of each air port are measured through a measuring port; the slurry spray gun is provided with different spray gun matrixes and different atomizing nozzles according to the specific gravity requirement of the product; the atomized fog drops are fully covered in the tower; the heat transfer process is better completed.

According to the structure of the utility model, the spray drying tower of the utility model keeps the balance of the air quantity and the air pressure of each air inlet through the adjustment of the hot air adjusting device of the spray drying tower, realizes the uniform distribution of the hot air in the tower body, and ensures the product quality; the spray gun of the spray drying tower is designed in a multilayer annular mode, so that fog drops are fully covered in the drying tower; thereby improving the thermal efficiency of hot air utilization and improving the production capacity of the spray drying tower.

Claims

1. The spray drying tower is characterized by comprising a tower body, wherein a hot air ring pipe surrounding the tower body in a circle is arranged at the bottom of the tower body, a total hot air inlet is formed in the outer side of the hot air ring pipe, a plurality of drainage air boxes used for uniformly introducing hot air in the hot air ring pipe into the tower body are arranged on the lower side of the hot air ring pipe, a hot air inlet adjusting device is arranged at a wind port between each drainage air box and the corresponding hot air ring pipe, a hot air outlet of each drainage air box is communicated into the tower body, a plurality of atomizing spray guns used for spraying materials are arranged in the tower body, a discharge port is formed in the bottom of the tower body, and a tail gas outlet is formed in the upper portion of the tower body.

2. The spray drying tower of claim 1, wherein the hot air inlet adjusting device comprises an adjusting screw, a limiting slide and a damper adjusting plate, the limiting slide is disposed at the air port between the drainage wind box and the hot air loop, and the adjusting screw drives the damper adjusting plate and enables the damper adjusting plate to move back and forth along the limiting slide.

3. The spray drying tower of claim 1, wherein a wind pressure measurer is disposed in each of the drainage windboxes.

4. The spray drying tower of claim 1, wherein the atomizing spray guns are arranged in multiple layers, each layer of atomizing spray guns is arranged in a ring shape with different diameters, the number of the atomizing spray guns is from small to large according to the relationship of the diameters of the atomizing spray guns from small to large, and the spraying range of the spray nozzles on the atomizing spray gun with the largest diameter is from the wall of the tower to the wall of the tower.

5. The spray drying tower of claim 1, wherein the outlet is a conical outlet.

6. A spray drying tower according to claim 1 wherein a base is provided at the bottom of the draft windbox.