CN215571608U

CN215571608U - Spray drier

Info

Publication number: CN215571608U
Application number: CN202121170651.7U
Authority: CN
Inventors: 陈文田; 郑庆东; 丁志昆
Original assignee: Aafud Industry Zhuhai Co ltd
Current assignee: Aafud Industry Zhuhai Co ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2022-01-18
Anticipated expiration: 2031-05-27

Abstract

The utility model discloses a spray dryer which comprises a spray dryer body, wherein a drying tower is arranged on one side of the spray dryer body, a hot air inlet is formed in the lower end of the drying tower, a drying chamber is arranged in the middle of the drying tower, the drying chamber is connected with a spray head, the top of the drying tower is connected with an air inlet of a cyclone collector, the bottom of the cyclone collector is connected with a material collecting bottle, and the top of the cyclone collector is connected with a tail air pipe. The dryer body is provided with an LCD touch screen for monitoring the hot air temperature and the hot air quantity at a hot air inlet, and the dryer body is also provided with an indicating lamp, an atomization pressure gauge, a peristaltic pump and an atomization pressure regulating valve. The utility model can complete the instant spray drying at the low temperature of 110 ℃; the utility model has low spraying temperature and low material collecting temperature, and can ensure that pigment molecules cannot be damaged.

Description

Spray drier

Technical Field

The utility model relates to the technical field of drying machines, in particular to a spray drying machine.

Background

Spray drying technology on the market at present generally needs higher temperature to finish spray drying, and the principle of spray drying is a process of removing moisture in spray by passing a solution to be treated through an atomizer and then passing high-temperature air. Since the solution is dispersed in air as a mist, the thermal efficiency is generally relatively high. The heat sensitivity of products using the spray dryer is not high, so the inlet air temperature of the spray dryer is over 140 ℃, most of the products are products with high heat sensitivity requirements, and the high temperature can reduce the quality of the products.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies of the prior art, it is an object of the present invention to provide a spray dryer.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a spray dryer, includes the spray dryer main part, dryer main part one side is provided with the drying tower, the drying tower lower extreme is provided with hot-blast import, the drying tower middle part is provided with the drying chamber, the drying chamber is connected with the shower nozzle, the drying tower top is connected with cyclone collector's air inlet, cyclone collector bottom is connected with the material receiving flask, cyclone collector top is connected with the tail gas pipe.

The dryer body is provided with an LCD touch screen for monitoring the hot air temperature and the hot air quantity at a hot air inlet, and the dryer body is also provided with an indicating lamp, an atomization pressure gauge, a peristaltic pump and an atomization pressure regulating valve.

Furthermore, the spray dryer main body and the drying tower are both made of food-grade stainless steel.

Furthermore, the upper half part of the drying chamber is made of glass, and the lower half part of the drying chamber is made of stainless steel.

Furthermore, the hot air inlet is connected with one end of an air supply pipeline, a filter screen is arranged at the joint of the air supply pipeline and the hot air inlet, the other end of the air supply pipeline is connected with an air outlet of a blower, and a heater is arranged at the air outlet of the blower.

Further, an air flow distribution cavity is further arranged between the hot air inlet and the drying chamber, the air flow distribution cavity is of an inverted cone structure, an air flow distribution plate is arranged in the air flow distribution cavity, and the air flow distribution plate is fixed in the middle of the air flow distribution cavity.

Further, drying chamber one side is connected with the atomizer, inside the drying chamber was arranged in to the atomizer shower nozzle, the drying chamber outside is arranged in to the atomizer feed inlet, the atomizer feed inlet is connected with peristaltic pump discharge port through first charge-in pipeline, the peristaltic pump feed inlet is connected with the material pole through second charge-in pipeline, the material jar passes through the trachea and is connected with air compressor.

The utility model has the beneficial effects that:

1. the instant spray drying can be completed under the condition of low temperature of 110 ℃;

2. the spraying temperature is low, the temperature of the material collecting part is low, and the pigment molecules can not be damaged. The product quality is guaranteed, and a novel research and development idea is provided.

Drawings

FIG. 1 is a schematic view of the overall structure of a spray dryer according to the present invention.

Reference numerals: 1. a touch screen; 2. an indicator light; 3. a peristaltic pump; 4. an atomizer; 5. an atomization pressure gauge; 6. an atomization pressure regulating valve; 7. a cyclone collector; 8. a material collecting bottle; 9. a visualization window; 10. a drying chamber; 11. and a hot air inlet.

Detailed Description

The utility model will be further described with reference to the accompanying drawings and the detailed description below:

the product of my department has heat intolerance, nature, the not high characteristic of moisture absorption, and in order to make the thermal efficiency maximize, a spray dryer of this embodiment adopts convection current mode spray drying, and this kind of drying mode can guarantee that the material temperature of drying out is higher for can not the secondary absorption moisture in the air in the follow-up collection of material.

The utility model provides a spray dryer, includes the spray dryer main part, dryer main part one side is provided with the drying tower, the drying tower lower extreme is provided with hot-blast import 11, the drying tower middle part is provided with drying chamber 10, drying chamber 10 is connected with 4 shower nozzles of atomizer, the drying tower top is connected with cyclone 7's air inlet, cyclone 7 bottom is connected with material receiving flask 8, cyclone 7 top is connected with the tailpipe.

The spray drying work takes place inside the drying tower, which is fixed on one side of the dryer body by a fixing piece.

The dryer is characterized in that an LCD touch screen 1 is arranged on the dryer body and used for monitoring the hot air temperature and the hot air quantity of a hot air inlet 11, and an indicating lamp 2, an atomization pressure gauge 5, a peristaltic pump 3 and an atomization pressure regulating valve 6 are further arranged on the dryer body.

The LCD touch screen 1 is a color LCD touch screen 1, the interface of the LCD touch screen 1 is a full Chinese operation interface, the air inlet temperature and the hot air flow can be visually observed and adjusted, and the heating temperature control precision is +/-1 ℃.

Furthermore, the upper half part of the drying chamber 10 is made of glass to form the visualization window 9, and the lower half part is made of stainless steel. The visual window 9 can ensure the operation safety of the machine and is beneficial to observing the experimental result during the experiment.

Further, the hot air inlet 11 is connected with one end of an air supply pipeline, a filter screen is arranged at the joint of the air supply pipeline and the hot air inlet 11, the other end of the air supply pipeline is connected with an air outlet of a blower, and a heater is arranged at the air outlet of the blower.

Further, an air flow distribution cavity is further arranged between the hot air inlet 11 and the drying chamber 10, the air flow distribution cavity is of an inverted cone structure, an air flow distribution plate is arranged in the air flow distribution cavity, and the air flow distribution plate is fixed in the middle of the air flow distribution cavity.

The air flow enters the spray drying chamber 10 through the heater, the air supply pipeline, the filter screen and the air flow distribution plate under the driving of the blower.

Further, 10 one side of drying chamber is connected with

atomizer

4, 4 shower nozzles of atomizer are arranged in inside 10 of drying chamber, 10 outsides in drying chamber are arranged in to 4 feed inlets of atomizer, 4 feed inlets of atomizer are connected with 3 discharge gates of peristaltic pump through first charge-in pipeline, 3 feed inlets of peristaltic pump pass through the second charge-in pipeline and are connected with the material jar, the material jar passes through the trachea and is connected with air compressor.

The liquid material enters the feeding pipeline under the pressure of the air compressor, and is atomized under the action of the atomizer 4, and finally forms mist to be sprayed in the drying chamber 10. The speed of the liquid material entering the feeding pipeline can be controlled by a panel of the peristaltic pump 3, and after the liquid material passes through the cyclone collector 7, the powder can be deposited in the material collecting bottle 8. The hot steam and a small amount of powder are discharged to the outside through a tail gas pipe. The air pressure can be adjusted by adjusting a knob on the air compressor.

The cyclone collector 7 is used for separating the powder from the hot steam from the drying chamber 10, when the powder and the hot steam pass through the cyclone collector 7, the powder is deposited in the material collecting bottle 8, and the hot steam and a small amount of powder are discharged to the outside through the tail gas pipe.

The specific working flow of the atomizing dryer is as follows:

s1, starting a blower and a heater through the LED touch screen 1, preheating hot air for a period of time, and enabling the hot air to enter an air flow distribution plate in an air flow distribution cavity from a hot air inlet 11 and uniformly rise to a drying chamber;

s2, starting the air compressor and the peristaltic pump 3 when the inlet air temperature reaches the allowable spraying value;

s3, the liquid material enters the feeding pipeline under the pressure of the air compressor, the liquid material is sprayed in the drying chamber 10 through the peristaltic pump 3 and the atomizer 4, the spray and the hot air are in drying reaction in the drying chamber 10, a worker can observe the drying condition through the visual window 9 and simultaneously observe the data of the atomization pressure gauge 5, and if the data are large in floating, the atomization pressure in the drying chamber 10 can be adjusted through the atomization pressure adjusting valve 6.

S4, discharging the dried mist into a cyclone collector 7, separating the powder from the water vapor by the cyclone collector 7, collecting the powder into a material collecting bottle 8 at the bottom of the cyclone collector 7, and discharging the water vapor from the top of the cyclone collector 7.

And S5, after the feed liquid is sprayed, spraying distilled water for a period of time to remove the adhesive liquid remained in the peristaltic pump 3, the feed pipe and the atomizer 4, thereby achieving the purpose of cleaning.

And S6, stopping feeding by stopping the air compressor, stopping the heater after the materials are dried and meet the process requirements, and turning off the air blower when the temperature of the feeding hole is reduced to below 90 ℃.

In order to prolong the service life of the equipment, the equipment is recommended to be maintained and maintained regularly, and the equipment needs to be detached and cleaned separately, and dried and restored for standby after cleaning. Long times without also suggesting a start every ten days, start times of more than 20 minutes.

The whole process is carried out by the two-fluid atomizer 4, the material to be dried is dispersed into fine particles like fog, and most of water is removed instantly after the material is contacted with hot air. Ensure the particles to be heated evenly. Preventing local overheating.

The specific embodiment is as follows:

a spray dryer is used together with an air compressor, and the rated material handling capacity is as follows: 1500 ml/H; minimum sample size 50 ml. Nozzle caliber: 0.5mm-2 mm. The drying temperature can be adjusted to 105 ℃. 200ml of sample is prepared and sprayed, and beet red with higher heat sensitivity is selected as a test object. The color number did not change significantly after spray drying and was within the acceptable range.

The drying/collecting/atomizing system can be easily disassembled for individual cleaning. After the air-drying, the clamp and the locking nut are locked after connection, and the air flow interfaces are required to be contracted and sealed, so that the air leakage phenomenon is avoided.

The bypass valve can touch travel switch after removing, will send signal to pilot lamp 2 after the travel switch response, and pilot lamp 2 becomes bright, and operating personnel learns that oil cleaner breaks down, can in time maintain the filter.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.

Claims

1. A spray dryer is characterized by comprising a spray dryer body, wherein one side of the dryer body is provided with a drying tower, the lower end of the drying tower is provided with a hot air inlet (11), the middle part of the drying tower is provided with a drying chamber (10), the drying chamber (10) is connected with an atomizer (4), the top of the drying tower is connected with an air inlet of a cyclone collector (7), the bottom of the cyclone collector (7) is connected with a material collecting bottle (8), and the top of the cyclone collector (7) is connected with a tail gas pipe;

the dryer is characterized in that an LCD touch screen (1) is arranged on the dryer body and used for monitoring the hot air temperature and the hot air quantity at a hot air inlet (11), and an indicating lamp (2), an atomization pressure gauge (5), a peristaltic pump (3) and an atomization pressure regulating valve (6) are further arranged on the dryer body.

2. A spray dryer according to claim 1 wherein the spray dryer body and the drying tower are both of food grade stainless steel.

3. A spray dryer according to claim 1, characterized in that the upper half of the drying chamber (10) is made of glass and the lower half of it is made of stainless steel.

4. The spray dryer according to claim 1, wherein the hot air inlet (11) is connected with one end of an air supply pipeline, a filter screen is arranged at the joint of the air supply pipeline and the hot air inlet (11), the other end of the air supply pipeline is connected with an air outlet of a blower, and the air outlet of the blower is provided with a heater.

5. The spray dryer according to claim 1, wherein an airflow distribution cavity is further disposed between the hot air inlet (11) and the drying chamber (10), the airflow distribution cavity is in an inverted cone structure, and an airflow distribution plate is disposed in the airflow distribution cavity and fixed in the middle of the airflow distribution cavity.

6. The spray dryer according to claim 1, wherein one side of the drying chamber (10) is connected with an atomizer (4), a spray head of the atomizer (4) is arranged inside the drying chamber (10), a feed inlet of the atomizer (4) is arranged outside the drying chamber (10), the feed inlet of the atomizer (4) is connected with a discharge outlet of the peristaltic pump (3) through a first feed pipeline, the feed inlet of the peristaltic pump (3) is connected with the material rod through a second feed pipeline, and the material cylinder is connected with an air compressor through an air pipe.