CN214861232U - Upper air inlet and upper air outlet pressure spray dryer - Google Patents
Upper air inlet and upper air outlet pressure spray dryer Download PDFInfo
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- CN214861232U CN214861232U CN202121224151.7U CN202121224151U CN214861232U CN 214861232 U CN214861232 U CN 214861232U CN 202121224151 U CN202121224151 U CN 202121224151U CN 214861232 U CN214861232 U CN 214861232U
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Abstract
The utility model relates to an air-out pressure spray drier on last air inlet, including drying tower (3), still include: the material conveying mechanism (1), the material conveying mechanism (1) comprises a material conveying pipe (106), a high-pressure pump (104) is arranged on the material conveying pipe (106), a plurality of spray guns (107) distributed annularly are arranged at the end part of the material conveying pipe (106), and the spray guns (107) are positioned at the top of the drying tower (3); the air conveying mechanism (2) is used for conveying rotating hot air into the drying tower (3), and the hot air is mixed with the liquid sprayed out by the spray gun (107) to dry the liquid; and the air inducing mechanism is connected with an upper discharge hole (301) at the top of the drying tower (3) and is used for inducing the dried air. This device compares in current desiccator, and drying effect is better.
Description
Technical Field
The utility model relates to a spray drier, concretely relates to go up air-out pressure spray drier on air inlet.
Background
Pressure spray drying is a drying process in which a raw material liquid is dispersed into droplets by a pressure atomizer (spray gun), and the droplets are brought into direct contact with hot air (or other gas) to obtain a powdery or granular product. The raw material liquid can be a solution, an emulsion or a suspension, and can also be a melt or a paste. The dried product can be made into powder, granule, hollow sphere or granule according to the requirement. The method is widely applied to industries such as blood cell plasma, yolk protein, food, medicine, chemical industry and the like, and has wide market prospect.
Existing upper air inlet and lower air outlet pressure spray dryer structure is a common spray dryer in the prior art, but it has the following disadvantages:
(1) the total height of the lower air outlet equipment is high, hot air and slurry enter from the upper part of the tower body, tail gas and finished products are discharged from the lower part of the tower body, the height of a straight cylinder body of the tower body needs to be increased to ensure the retention time required by material drying, the height of a factory building needs to be high, and the building cost is high;
(2) the product has uneven granularity, more coarse particles in the tower body and more fine particles collected by a cyclone and a cloth bag at the back;
(3) the lower air outlet tower is downstream drying, an annular air curtain cannot be formed in the tower during drying, the wall of the tower is seriously adhered, and the lower air outlet tower needs to be cleaned every day, so that the material loss is increased, a large amount of hot water is wasted, the energy is consumed, and the discharge capacity is increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing an air-out pressure spray drier on going up the air inlet has different air-out modes with common spray drier.
The technical scheme of the utility model as follows:
go up air-out pressure spray drier on air inlet, including drying tower (3), its characterized in that still includes:
the material conveying mechanism (1), the material conveying mechanism (1) comprises a material conveying pipe (106), a high-pressure pump (104) is arranged on the material conveying pipe (106), a plurality of spray guns (107) distributed annularly are arranged at the end part of the material conveying pipe (106), and the spray guns (107) are positioned at the top of the drying tower (3);
the air conveying mechanism (2) is used for conveying rotating hot air into the drying tower (3), and the hot air is mixed with the liquid sprayed out by the spray gun (107) to dry the liquid;
and the air inducing mechanism is connected with an upper discharge hole (301) at the top of the drying tower (3) and is used for inducing the dried air.
Further, a fluidized bed (304) is arranged at the bottom of the drying tower (3), a perforated plate (3044) is arranged inside the fluidized bed (304), a lower air inlet (3041) for inputting hot air is arranged on the side surface of the fluidized bed (304), a discharge hole (3042) is arranged on the other side of the fluidized bed (304), and a first air-lock valve (3043) is arranged at the bottom of the discharge hole (3042).
Further, the air inducing mechanism comprises a cyclone separator (4), a bag-type dust collector (5) and an exhaust fan (6) which are connected in sequence; wherein a first discharge pipe (401) of the cyclone separator (4) is connected with the upper discharge hole (301).
Further, a second air lock (403) is arranged at the bottom of the cyclone separator (4), and a second thermometer (402) is arranged on the first discharge pipe (401).
Furthermore, the bag-type dust collector (5) is connected with the cyclone separator (4) through a second discharge pipe (501), and a third air-lock valve (502) is arranged at the bottom of the bag-type dust collector (5).
Furthermore, the top of the bag-type dust collector (5) is also connected with a compressed air input pipe (503).
Furthermore, an exhaust pipe (601) is arranged between the bag-type dust collector (5) and the exhaust fan (6), a butterfly valve is arranged on the exhaust pipe (601), a second adjusting valve (602) is arranged on the butterfly valve, and an adjusting handle is arranged on the second adjusting valve (602).
Further, the gas transmission mechanism (2) comprises a first filter (201), a first regulating valve (202), a blower (203), a heater (204) and a gas transmission pipe (205) which are connected in sequence, and a first thermometer (206) is arranged on the gas transmission pipe (205).
Further, the heater (204) includes a steam heater (2041) and an electric heater (2042) connected to each other.
Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage:
(1) energy conservation: because the air return chamber of the upper air outlet tower is the high negative pressure area of the tower at the upper part, the evaporation temperature is reduced by the evaporation of the high negative pressure area in the process of water evaporation, and the energy is saved by the reduction of the temperature;
(2) the building investment is saved, and the height of an upper air outlet is reduced by 5-7 meters compared with that of a lower air outlet building by equipment with the same specification;
(3) the product has good quality, uniform particles, and less large particles and small particles. Because the drying zone of the powder is a high negative pressure zone and low temperature drying, various vitamins in the powder are slightly damaged, and the protein is not denatured. In addition, as the heating time of the powder in the drying process is shorter than that of the lower air outlet tower at a high-temperature zone, the powder has better color, granularity and mixing property;
(4) reduce the blowdown flow, energy saving reduces intensity of labour: the upper air outlet is mixed flow drying, the flow of the fog drops is downstream in the constant-speed drying period, the mixed flow air exhaust is performed in the speed reduction period, the air reaches the bottom of the tower to form large rotation, so that the materials and the air in the drying process are separated, and the air forms a large annular air curtain on the tower wall in the rapid upward movement, so that the phenomenon that the tower wall is stuck to the wall is controlled, the cleaning period is long, the discharge capacity is reduced, the energy is saved, and the labor intensity of workers is reduced.
(5) A set of built-in fluidized bed device can be installed at the bottom of the tower body for the dried granular finished product, and the finished product can be dried and granulated for the second time through the built-in fluidized bed device. The moisture content of the granules entering the internal fluid bed can be controlled within a desired range to obtain larger granules and structural changes (agglomeration or granulation), and final drying and cooling of the product can be carried out in an additional external fluid bed connected to the outlet of the internal fluid bed, if desired.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
1-a material conveying mechanism; 101-a clean water pipe; 102-a shut-off valve; 103-a liquid pipe; 104-a high pressure pump; 105-a first pressure gauge; 106-a delivery conduit; 107-spray gun;
2-a gas transmission mechanism; 201-a first filter; 202-first regulating valve; 203-a blower; 204-a heater; 2041-steam heater; 2042-electric heater; 205-gas delivery pipe; 206-a first thermometer;
3-a drying tower; 301-upper discharge port; 302-a second pressure gauge; 304-a fluidized bed; 3041-lower air intake; 3042-discharge port; 3043-a first air-turning off machine; 3044-an orifice plate;
4-cyclone separator; 401-a first tapping pipe; 402-a second thermometer; 403-a second air shutter;
5-bag dust collector; 501-a second discharge pipe; 502-third air-break machine; 503-compressed air input pipe;
6-an exhaust fan; 601-an exhaust pipe; 602-second regulating valve.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1, the specific structure of the device is as follows:
including defeated material mechanism 1, defeated material mechanism 1 has included high-pressure pump 104, and clear water pipe 101 and liquid material pipe 102 mix the back and input into high-pressure pump 104, have still set up a stop valve 102 on clear water pipe 101, have the material solution of liquid in the liquid material pipe 102, and clear water pipe 101 is used for rather than mixing, and stop valve 102 plays the size of adjusting clear water pipe 101 output rivers, and high-pressure pump 104 is used for exporting to the high pressure. The high-pressure pump 104 is connected with a material conveying pipe 106, a first pressure gauge 105 is arranged on the material conveying pipe 106, the first pressure gauge 105 is used for recording the liquid pressure in the material conveying pipe 106, and the size of the internal liquid pressure can be specifically adjusted according to the obtained value.
The feed pipe 106 extends to the top of the drying tower 3, the feed pipe 106 is connected with a plurality of spray guns 107 distributed in a ring shape, and spray heads of the spray guns 107 are positioned inside the drying tower 3 and used for spraying the mixed materials input by the feed pipe 106 at the top of the drying tower 3.
The upper portion of the drying tower 3 is further provided with a ring-shaped upper discharge port 301, the bottom of the drying tower 3 is provided with a fluidized bed 304, the fluidized bed 304 includes a lower inlet 3041 on the side, the lower inlet 3041 is used for flowing high-temperature steam, a perforated plate 3044 is arranged inside the fluidized bed 304, a discharge port 3042 is arranged on the other side of the fluidized bed 304, and a first air-lock blower 3043 is arranged at the bottom of the discharge port 3042. A second pressure gauge 302 is further provided at the side of the drying tower 3, and the second pressure gauge 302 is used to record the air pressure inside the drying tower 3.
The upper part of the drying tower 3 is also fed with high-temperature air, in particular fed through the air conveying mechanism 2.
The gas transmission mechanism 2 comprises a first filter 201, a first regulating valve 202, a blower 203, a heater 204 and a gas transmission pipe 205 which are connected in sequence, a first thermometer 206 is arranged on the gas transmission pipe 205, and the heater 204 comprises a steam heater 2041 and an electric heater 2042. In the air delivery mechanism 2, the first filter 201 mainly performs primary and intermediate filtering on air, the first regulating valve 202 is used for regulating the flow rate, the blower 203 mainly performs air supply, the heater 204 performs air heating, the air delivery pipe 205 is used for outputting heated air, and the first thermometer 206 is used for recording the temperature of the air in the air delivery pipe 205, so that the adjustment and observation are facilitated. The end of the air delivery pipe 205 is connected to a hot air distributor, which is of conventional construction, for delivering rotating hot air at the top of the drying tower 3 at the center of the spray gun 107.
The top outlet 301 is connected to the cyclone 4 via a first outlet pipe 401, a second thermometer 402 is typically arranged on the first outlet pipe 401 for recording the temperature of the first outlet pipe 401, and a second air-lock 403 is arranged at the bottom of the cyclone 4.
A bag-type dust collector 5 is connected to one side of the cyclone separator 4, the bag-type dust collector 5 is connected to the upper side of the cyclone separator 4 through a second discharge pipe 501, and a third air-lock valve 502 is arranged at the bottom of the bag-type dust collector 5.
An exhaust fan 6 is connected to one side of the bag-type dust collector 5, the exhaust fan 6 is connected with the bag-type dust collector 5 through an exhaust pipe 601, a second adjusting valve 602 is arranged on the exhaust pipe 601, and an adjusting handle is further arranged on the second filter 602.
In general, a compressed air input pipe 503 is connected to the top of the bag-type dust collector 5 for inputting high-pressure air into the bag-type dust collector 5.
The working principle of the device is as follows:
the device is a drying process for dispersing a liquid pipe into fog drops on the top of a tower by a spray gun and a pressure atomizer under the action of a high-pressure pump, and obtaining a powder and particle product by a mode that hot air rotated by a hot air distributor directly contacts the fog drops. And the dried finished product falls to the bottom of the tower body under the action of gravity, enters the built-in fluidized bed for secondary drying, and then enters the material receiving air seal machine for collection. And the tail gas enters a cyclone separator and a bag-type dust collector for gas-solid separation through a tower ejection upper discharge port under the action of an exhaust fan, fine powder products are collected through the cyclone separator and the bag-type dust collector, and the tail gas passes through a filter bag air outlet and is evacuated by the exhaust fan.
Compared with the existing lower air-out pressure spray dryer, the device has the following main advantages:
(1) energy conservation: because the air return chamber of the upper air outlet tower is the high negative pressure area of the tower at the upper part, the evaporation temperature is reduced by the evaporation of the high negative pressure area in the process of water evaporation, and the energy is saved by the reduction of the temperature;
(2) the building investment is saved, and the height of an upper air outlet is reduced by 5-7 meters compared with that of a lower air outlet building by equipment with the same specification;
(3) the product has good quality, uniform particles, and less large particles and small particles. Because the drying zone of the powder is a high negative pressure zone and low temperature drying, various vitamins in the powder are slightly damaged, and the protein is not denatured. In addition, as the heating time of the powder in the drying process is shorter than that of the lower air outlet tower at a high-temperature zone, the powder has better color, granularity and mixing property;
(4) reduce the blowdown flow, energy saving reduces intensity of labour: the upper air outlet is mixed flow drying, the flow of the fog drops is downstream in the constant-speed drying period, the mixed flow air exhaust is performed in the speed reduction period, the air reaches the bottom of the tower to form large rotation, so that the materials and the air in the drying process are separated, and the air forms a large annular air curtain on the tower wall in the rapid upward movement, so that the phenomenon that the tower wall is stuck to the wall is controlled, the cleaning period is long, the discharge capacity is reduced, the energy is saved, and the labor intensity of workers is reduced.
(5) A set of built-in fluidized bed device can be installed at the bottom of the tower body for the dried granular finished product, and the finished product can be dried and granulated for the second time through the built-in fluidized bed device. The moisture content of the granules entering the internal fluid bed can be controlled within a desired range to obtain larger granules and structural changes (agglomeration or granulation), and final drying and cooling of the product can be carried out in an additional external fluid bed connected to the outlet of the internal fluid bed, if desired.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. Go up air-out pressure spray drier on air inlet, including drying tower (3), its characterized in that still includes:
the material conveying mechanism (1), the material conveying mechanism (1) comprises a material conveying pipe (106), a high-pressure pump (104) is arranged on the material conveying pipe (106), a plurality of spray guns (107) distributed annularly are arranged at the end part of the material conveying pipe (106), and the spray guns (107) are positioned at the top of the drying tower (3);
the air conveying mechanism (2) is used for conveying rotating hot air into the drying tower (3), and the hot air is mixed with the liquid sprayed out by the spray gun (107) to dry the liquid;
and the air inducing mechanism is connected with an upper discharge hole (301) at the top of the drying tower (3) and is used for inducing the dried air.
2. The upward air intake and upward air outlet pressure spray dryer of claim 1, characterized in that:
the drying device is characterized in that a fluidized bed (304) is arranged at the bottom of the drying tower (3), a pore plate (3044) is arranged inside the fluidized bed (304), a lower air inlet (3041) for inputting hot air is arranged on the side surface of the fluidized bed (304), a discharge hole (3042) is arranged on the other side of the fluidized bed (304), and a first air closing machine (3043) is arranged at the bottom of the discharge hole (3042).
3. The upper air inlet and upper air outlet pressure spray dryer of claim 2, wherein: the air inducing mechanism comprises a cyclone separator (4), a bag-type dust collector (5) and an exhaust fan (6) which are connected in sequence; wherein a first discharge pipe (401) of the cyclone separator (4) is connected with the upper discharge hole (301).
4. The upper air inlet and upper air outlet pressure spray dryer of claim 3, wherein: the bottom of the cyclone separator (4) is provided with a second air shutter machine (403), and a second thermometer (402) is arranged on the first discharge pipe (401).
5. The upper air inlet and upper air outlet pressure spray dryer of claim 3, wherein: the bag-type dust collector (5) is connected with the cyclone separator (4) through a second discharge pipe (501), and a third air-closing machine (502) is arranged at the bottom of the bag-type dust collector (5).
6. The upper air inlet and upper air outlet pressure spray dryer of claim 3, wherein: the top of the bag-type dust collector (5) is also connected with a compressed air input pipe (503).
7. The upper air inlet and upper air outlet pressure spray dryer of claim 3, wherein: an exhaust pipe (601) is arranged between the bag-type dust collector (5) and the exhaust fan (6), a butterfly valve is arranged on the exhaust pipe (601), a second adjusting valve (602) is arranged on the butterfly valve, and an adjusting handle is arranged on the second adjusting valve (602).
8. The upward air intake and upward air outlet pressure spray dryer of claim 1, characterized in that: the gas transmission mechanism (2) comprises a first filter (201), a first regulating valve (202), a blower (203), a heater (204) and a gas transmission pipe (205) which are connected in sequence, and a first thermometer (206) is arranged on the gas transmission pipe (205).
9. The upward air intake and upward air outlet pressure spray dryer of claim 8, characterized in that: the heater (204) includes a steam heater (2041) and an electric heater (2042) connected to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121224151.7U CN214861232U (en) | 2021-06-03 | 2021-06-03 | Upper air inlet and upper air outlet pressure spray dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121224151.7U CN214861232U (en) | 2021-06-03 | 2021-06-03 | Upper air inlet and upper air outlet pressure spray dryer |
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| Publication Number | Publication Date |
|---|---|
| CN214861232U true CN214861232U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121224151.7U Active CN214861232U (en) | 2021-06-03 | 2021-06-03 | Upper air inlet and upper air outlet pressure spray dryer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114249856A (en) * | 2021-12-29 | 2022-03-29 | 黄山联固新材料科技有限公司 | Preparation process of acrylic emulsion |
| CN115581930A (en) * | 2022-09-09 | 2023-01-10 | 佛山市南海华昊华丰淀粉有限公司 | Spray drying system |
-
2021
- 2021-06-03 CN CN202121224151.7U patent/CN214861232U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114249856A (en) * | 2021-12-29 | 2022-03-29 | 黄山联固新材料科技有限公司 | Preparation process of acrylic emulsion |
| CN115581930A (en) * | 2022-09-09 | 2023-01-10 | 佛山市南海华昊华丰淀粉有限公司 | Spray drying system |
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