CN215260819U - Circulation system of vacuum belt type dryer - Google Patents
Circulation system of vacuum belt type dryer Download PDFInfo
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- CN215260819U CN215260819U CN202121592003.0U CN202121592003U CN215260819U CN 215260819 U CN215260819 U CN 215260819U CN 202121592003 U CN202121592003 U CN 202121592003U CN 215260819 U CN215260819 U CN 215260819U
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- vacuum belt
- pipe
- belt dryer
- circulation system
- steam
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000000428 dust Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 238000011084 recovery Methods 0.000 abstract description 3
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 18
- 238000001035 drying Methods 0.000 description 6
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The utility model discloses a vacuum belt dryer circulation system, including vacuum belt dryer and the heating zone of arranging under the conveyer belt, the heating zone is connected with the compressor through the intake pipe, the compressor is connected with steam generator through first circulation blast pipe, steam generator through first discharge pipe with the heating zone is connected, vacuum belt dryer top steam outlet connects the second discharge pipe, the second discharge pipe connects the second circulation blast pipe, the second circulation blast pipe connects the first circulation blast pipe; the air inlet pipe is also connected with a steam generation pipe. The utility model discloses can carry out liquid and thermal recovery to the condensate water of the zone of heating and the steam that the desiccator produced, the abundant cyclic utilization of heat energy improves heat utilization rate.
Description
Technical Field
The utility model belongs to the technical field of drying equipment, specifically be a vacuum belt dryer circulation system.
Background
The vacuum belt drier is a kind of continuously operated vacuum drying equipment, the material is uniformly distributed on the material conveying belt, the conveying belt carries the material through each heating zone in turn according to the set speed, the heating medium (such as steam and hot water) transfers the heat to the material on the conveying belt to carry out heat exchange. The continuous vacuum drying has the advantages that: the moisture in the material is evaporated in a vacuum environment, the temperature of the material is low, and the product quality is good; the powder collecting rate is high, and the powder collecting rate of a dry product can reach 100% theoretically; dust, organic volatile matters, smell and the like in the drying process can be effectively separated out through a vacuum system, the environment is not affected, and the drying equipment is green drying equipment. The vacuum belt type dryer is applied to the industries of food, medicine, chemical industry and the like at present.
However, supersaturated steam is introduced into a heating body of the existing vacuum belt dryer for condensation and heat release for material drying, and condensed water and saturated steam have the same temperature and are directly discharged, so that heat energy waste is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a vacuum belt dryer circulation system to solve the problem of proposing in the above-mentioned background art, carry out circulation recovery, make full use of through the heat that contains the comdenstion water, avoid heat energy extravagant.
In order to achieve the above object, the utility model provides a following technical scheme: a circulating system of a vacuum belt dryer comprises the vacuum belt dryer and a heating zone arranged below a conveyor belt, wherein the heating zone is connected with a compressor through an air inlet pipe, the compressor is connected with a steam generator through a first circulating air supply pipe, the steam generator is connected with the heating zone through a first discharge pipe, a steam outlet at the top of the vacuum belt dryer is connected with a second discharge pipe, the second discharge pipe is connected with a second circulating air supply pipe, and the second circulating air supply pipe is connected with the first circulating air supply pipe;
the air inlet pipe is also connected with a steam generation pipe.
By adopting the scheme, hot steam generated by the steam generator enters the compressor through the first circulating air supply pipe, and the compressed hot steam enters the air inlet pipe and is mixed with raw steam fed by the raw steam pipe to obtain mixed steam. The mixed steam enters the heating area, and the material that is on carrying the conveyer belt as the heat source is dried, and the high temperature steam condensation in the heating area forms high temperature condensate water and flows into steam generator through first delivery pipe in, can use high temperature condensate water to carry out the evaporation of rising temperature as the basis during steam generator heating for the heat in the high temperature condensate water is recycled. In addition, steam generated in the vacuum belt dryer sequentially enters the compressor through the second discharge pipe, the second circulating air supply pipe and the first circulating air supply pipe through the top steam outlet, is compressed and then enters the air inlet pipe to be mixed with the raw steam fed by the raw steam pipe to form mixed steam, and the mixed steam is reused.
Further, a filter is provided on the second discharge pipe to remove dust particles.
Furthermore, the filter comprises a primary filter and a secondary filter which are connected in sequence, and the filter mesh diameter of the primary filter is larger than that of the secondary filter.
Furthermore, the two filter screens are arranged in the secondary filter, the direction of each filter screen is parallel to the direction of the second discharge pipe, one filter screen is arranged at the position connected with the second circulation air feeding pipe, and the other filter screen is arranged at the position connected with the condenser.
Furthermore, the second circulation air supply pipe is sequentially connected with the feed hopper heat exchange sleeve and the condensed water flash tank, an air outlet of the condensed water flash tank is connected with the first circulation air supply pipe, and a liquid outlet of the condensed water flash tank is connected with the steam generator.
Further, the condenser is connected with a condensed water tank.
Furthermore, an air outlet of the condensed water tank is sequentially connected with the roots pump and the water ring pump through pipelines.
Further, the liquid outlet of the condensed water tank is connected to the steam generator through a pipe.
Further, a material guide plate for guiding the feeding material to the heating area and a limiting plate for limiting the feeding height on the heating area are arranged at the feeding position in the vacuum belt dryer.
Furthermore, a scraping plate is arranged at the discharging position in the vacuum belt dryer.
The utility model discloses following beneficial effect has:
the utility model relates to a vacuum belt dryer circulation system can carry out liquid and thermal recovery to the condensate water of the zone of heating and the steam that the desiccator produced, and the abundant cyclic utilization of heat energy improves heat utilization rate.
Drawings
Fig. 1 is a schematic structural view of a circulation system of a vacuum belt dryer of the present invention.
In the figure: 1. a vacuum belt dryer; 2. a heating zone; 3. an air inlet pipe; 4. a compressor; 5. a first circulation air supply pipe; 6. a steam generator; 7. a first discharge pipe; 8. a condensed water flash tank; 9. a condenser; 10. a raw steam pipe; 11. a scraping plate; 12. a second discharge pipe; 13. a second circulation air supply pipe; 14. a condensate tank; 15. a first stage filter; 16. a secondary filter; 17. a feed hopper heat exchange sleeve; 18. a roots pump; 19. a water ring pump; 20. a material guide plate; 21. and a limiting plate.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example 1
A circulation system of a vacuum belt dryer is shown in figure 1 and comprises a vacuum belt dryer 1 and a heating area 2 arranged below a conveyor belt, wherein the heating area 2 is connected with a compressor 4 through an air inlet pipe 3, the compressor 4 is connected with a steam generator 6 through a first circulation air supply pipe 5, the steam generator 6 is connected with the heating area 2 through a first exhaust pipe 7, a steam outlet at the top of the vacuum belt dryer 1 is connected with a second exhaust pipe 12, the second exhaust pipe 12 is connected with a second circulation air supply pipe 13, and the second circulation air supply pipe 13 is connected with the first circulation air supply pipe 5; the steam generation pipe 10 is also connected to the air inlet pipe 3.
As shown in particular in fig. 1, the second discharge pipe 12 is provided with a filter to remove dust particles and avoid clogging of the pipe machine. Specifically, the filter comprises a primary filter 15 and a secondary filter 16 which are connected in sequence, the filter mesh diameter of the primary filter 15 is larger than that of the secondary filter 16, and dust particles are basically removed after two layers of filtering. More specifically, the two strainers are provided in the secondary filter 16 in a direction parallel to the direction of the second discharge pipe 12, one of the strainers being provided at a position connected to the second circulation feed pipe 13 and the other strainer being provided at a position connected to the condenser 9. Wherein, the second circulation air feed pipe 13 connects gradually feeder hopper heat transfer cover 17, comdenstion water flash tank 8, and first circulation air feed pipe 5 is connected to the gas outlet of comdenstion water flash tank 8, and the liquid outlet of comdenstion water flash tank 8 connects steam generator 6. The condenser 9 is connected with a condensed water tank 14, and a liquid outlet of the condensed water tank 14 is connected with the steam generator 6 through a pipeline. The outlet of the condensed water tank 14 is connected with a roots pump 18 and a water ring pump 19 in turn through pipelines.
Specifically, as shown in fig. 1, a material guide plate 20 and a limit plate 21 are disposed at a feeding position in the vacuum belt dryer 1. A scraping plate 11 is arranged at the discharging position in the vacuum belt type dryer 1. The arrangement of the material guide plate 20 is convenient for guiding materials to fall into the heating area 2 of the conveyor belt, and the arrangement of the limiting plate 21 is convenient for limiting the feeding height on the conveyor belt, so that the materials are uniformly distributed on the conveyor belt and have consistent thickness, and the drying efficiency in the heating area 2 is improved.
The working process is as follows:
hot steam generated by the steam generator 6 enters the compressor 4 through the first circulating air supply pipe 5, and the compressed hot steam enters the air inlet pipe 3 and is mixed with the raw steam fed by the raw steam pipe 10 to obtain mixed steam. Mixed steam enters into heating zone 2, and the material that carries on as the heat source on to the conveyer belt is dried, and mixed steam condensation forms high temperature condensate water and flows into steam generator 6 through first exhaust pipe 7 after the heat transfer, can use high temperature condensate water to heat up the evaporation as the basis during steam generator 6 heats for the heat in the high temperature condensate water is recycled. Meanwhile, steam generated in the vacuum belt dryer 1 is sequentially filtered by a first-stage filter 15 and a second-stage filter 16 through a second discharge pipe 12 via a top steam outlet to remove dust particles, the steam filtered by the second-stage filter 16 is divided into two streams, one stream passes through a second circulating air feeding pipe 13 and exchanges heat with the feeding material in a feeding hopper heat exchange sleeve 17, so that part of heat recovered by the feeding material is preheated, then the condensed water enters a condensed water flash tank 8, a part of the condensed water in the condensed water flash tank 8 enters a first circulating air supply pipe 5 and a compressor 4 in sequence through an air outlet after being flashed, the compressed condensed water and the raw steam are mixed to obtain mixed steam which is used as a heat source, while another portion of the condensate in the condensate flash tank 8 enters the steam generator 6 through the liquid outlet, the steam generator 6 heats and evaporates the condensate water, so that the heat in the condensate water is reused. The other steam filtered by the secondary filter 16 enters the condenser 13 and is cooled by the condenser 13, the cooled steam sequentially enters the roots pump 18 and the water ring pump 19 through the air outlet of the condensed water tank 14, the cooled condensed water enters the steam generator 6 through the liquid outlet of the condensed water tank 14, and the steam generator 6 can be heated and evaporated on the basis of the condensed water when being heated, so that the condensed water can be reused.
It should be finally noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention and not for limiting the same, and although the embodiments of the present invention are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the present invention can still be modified or replaced with equivalents, and these modifications or equivalent replacements cannot make the modified technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A circulating system of a vacuum belt dryer comprises a vacuum belt dryer (1) and a heating zone (2) arranged below a conveyor belt, and is characterized in that the heating zone (2) is connected with a compressor (4) through an air inlet pipe (3), the compressor (4) is connected with a steam generator (6) through a first circulating air supply pipe (5), the steam generator (6) is connected with the heating zone (2) through a first discharge pipe (7), a steam outlet at the top of the vacuum belt dryer (1) is connected with a second discharge pipe (12), the second discharge pipe (12) is connected with a second circulating air supply pipe (13), and the second circulating air supply pipe (13) is connected with the first circulating air supply pipe (5);
the air inlet pipe (3) is also connected with a steam generation pipe (10).
2. A vacuum belt dryer circulation system according to claim 1, characterized in that the second discharge pipe (12) is provided with a filter for removing dust particles.
3. A vacuum belt dryer circulation system according to claim 2, characterized in that the filter comprises a primary filter (15) and a secondary filter (16) connected in series, the primary filter (15) having a larger filter mesh size than the secondary filter (16).
4. A vacuum belt dryer circulation system according to claim 3, characterized in that the secondary filter (16) has two screens, which are oriented in parallel with the second discharge pipe (12), one of which is provided at a position connected to the second circulation feed pipe (13) and the other of which is provided at a position connected to the condenser (9).
5. A vacuum belt dryer circulation system according to claim 4, characterized in that the second circulation air supply pipe (13) is connected with a feed hopper heat exchange sleeve (17) and a condensed water flash tank (8) in sequence, an air outlet of the condensed water flash tank (8) is connected with the first circulation air supply pipe (5), and a liquid outlet of the condensed water flash tank (8) is connected with the steam generator (6).
6. A vacuum belt dryer circulation system according to claim 4, characterized in that the condenser (9) is connected to a condensate water tank (14).
7. A vacuum belt dryer circulation system according to claim 6, characterized in that the outlet of the condensed water tank (14) is connected with a roots pump (18) and a water ring pump (19) in turn through pipes.
8. A vacuum belt dryer circulation system according to claim 6, characterized in that the liquid outlet of the condensate tank (14) is connected to the steam generator (6) by means of a pipe.
9. A vacuum belt dryer circulation system according to claim 1, characterized in that the feeding point in the vacuum belt dryer (1) is provided with a guide plate (20) for guiding the feeding to the heating zone (2) and a limit plate (21) for limiting the feeding height in the heating zone (2).
10. A vacuum belt dryer circulation system according to claim 1, characterized in that a scraper plate (11) is arranged at the discharge point in the vacuum belt dryer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121592003.0U CN215260819U (en) | 2021-07-13 | 2021-07-13 | Circulation system of vacuum belt type dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121592003.0U CN215260819U (en) | 2021-07-13 | 2021-07-13 | Circulation system of vacuum belt type dryer |
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| Publication Number | Publication Date |
|---|---|
| CN215260819U true CN215260819U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121592003.0U Active CN215260819U (en) | 2021-07-13 | 2021-07-13 | Circulation system of vacuum belt type dryer |
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| CN (1) | CN215260819U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116182514A (en) * | 2022-12-07 | 2023-05-30 | 上海发电设备成套设计研究院有限责任公司 | Helium circulation drying device system and method suitable for spent fuel sealed container |
-
2021
- 2021-07-13 CN CN202121592003.0U patent/CN215260819U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116182514A (en) * | 2022-12-07 | 2023-05-30 | 上海发电设备成套设计研究院有限责任公司 | Helium circulation drying device system and method suitable for spent fuel sealed container |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231221 Address after: No. 10-6, Oujiang Road, Xinhu, Shuangfeng Town, Taicang City, Suzhou City, Jiangsu Province, 215400 Patentee after: Suzhou Dadu Intelligent Equipment Co.,Ltd. Address before: 300000 room 306, No. 7, Nujiang Road, Hexi District, Tianjin Patentee before: Tianjin Dingweisterui Technology Co.,Ltd. |