CN220602085U - Multistage backheating dehumidification's heat pump subregion drying system - Google Patents
Multistage backheating dehumidification's heat pump subregion drying system Download PDFInfo
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- CN220602085U CN220602085U CN202320708479.9U CN202320708479U CN220602085U CN 220602085 U CN220602085 U CN 220602085U CN 202320708479 U CN202320708479 U CN 202320708479U CN 220602085 U CN220602085 U CN 220602085U
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- 238000001035 drying Methods 0.000 title claims abstract description 125
- 238000007791 dehumidification Methods 0.000 title claims abstract description 76
- 230000001172 regenerating effect Effects 0.000 claims abstract description 128
- 238000005192 partition Methods 0.000 claims abstract description 60
- 239000000463 material Substances 0.000 claims description 53
- 238000012546 transfer Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 15
- 230000018044 dehydration Effects 0.000 abstract description 6
- 238000006297 dehydration reaction Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 239000007788 liquid Substances 0.000 description 11
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000000638 solvent extraction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000013316 zoning Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model relates to the technical field of heat pump drying, in particular to a heat pump partition drying system with multistage backheating and dehumidification functions. In the utility model, three drying areas are formed by combining a plurality of conveying devices and a plurality of partition plates with a first condenser, a second condenser of a heat pump partition system and a first regenerative dehumidifier and a second regenerative dehumidifier of a multi-stage regenerative dehumidification system. The continuous dehydration effect in the drying and dehumidifying process is realized through the first regenerative dehumidifier, the second regenerative dehumidifier and the evaporator, the partition drying effect is realized, and meanwhile, the air dewatering or dehydration is realized through the multi-stage regenerative and dehumidifying structure; according to the utility model, through the heat pump partition system and the multistage regenerative dehumidification system, the air temperature is continuously increased and the air humidity is reduced in the dehumidification process, so that the problems of moisture and low temperature which are continuously accumulated in the air in the dehumidification process can be solved.
Description
Technical Field
The utility model relates to the technical field of heat pump drying, in particular to a heat pump partition drying system with multistage backheating and dehumidification functions.
Background
Among the drying technologies, the drying technology adopted by the heat pump drying system is widely used in the field of drying and dehumidification due to its high dehumidification capability. The traditional heat pump drying system generally takes a single condenser as a high-temperature heat source, and heats dry air to dry wet materials such as crops in a drying bin; in the dehumidification process, the humidity of the high-temperature dry air is gradually increased, the high-temperature dry air gradually evolves into medium-temperature high-humidity air, the dehumidification capacity of the medium-later-stage air is gradually reduced, and the dehumidification efficiency is further reduced.
The dehumidification process is a complex heat and mass transfer process, and temperature and humidity are important factors affecting dehumidification. In order to obtain a long-term efficient dehumidification capacity in a heat pump drying system, it is necessary to keep the drying air at a high temperature and a low humidity for a long time. However, dehumidification with a high Wen Shikong unit can in turn increase the humidity of the air and decrease the temperature, thereby inhibiting the dehumidification process.
Disclosure of Invention
The utility model aims at: in order to solve the problems in the prior art, the utility model provides a multistage regenerative dehumidification heat pump partition drying system.
In order to solve the problems existing in the prior art, the utility model adopts the following technical scheme:
the heat pump partition drying system comprises a drying chamber, a multi-stage regenerative dehumidification system and a heat pump partition system;
the heat pump partition system comprises a plurality of fans, and a compressor and a condenser which are connected with each other;
the multi-stage regenerative dehumidification system comprises a regenerative dehumidifier;
the drying room is divided into a plurality of mutually independent gas flow areas, the front end of each gas flow area is provided with the fan, and a corresponding gas circulation flow path is formed in each area; the plurality of gas flow areas are arranged from top to bottom, and the regenerative dehumidifier is arranged between two adjacent gas flow areas;
the upper part of the drying chamber is provided with a wet material inlet, a material conveying channel is formed in the drying chamber, and wet materials are sequentially conveyed through the material conveying channel to pass through a plurality of gas flow areas;
the heat pump partition system is arranged on one side of the drying chamber, and the condenser is arranged at the front end of the material conveying channel.
As an improvement of the technical scheme of the multistage regenerative dehumidification heat pump partition drying system, the drying chamber comprises a plurality of conveying devices and a plurality of partition plates, the conveying devices are arranged in parallel from top to bottom, and the drying chamber is divided into a plurality of mutually independent gas flow areas by the conveying devices and the partition plates.
As an improvement of the technical scheme of the multistage regenerative dehumidification heat pump partition drying system, each conveying device comprises at least three rotating shafts, the at least three rotating shafts are arranged in parallel and have a certain distance from each other, and the conveying belt is circumferentially covered on the outer sides of the at least three rotating shafts;
the conveyor belt is arranged on the outer sides of at least three rotating shafts in a non-tightening mode.
As an improvement of the technical scheme of the multistage regenerative dehumidification heat pump partition drying system, the drying chamber comprises a plurality of conveying devices, and the front end of the uppermost conveying device is arranged below the wet material inlet;
the conveying devices comprise a plurality of conveying devices with odd layers and a plurality of conveying devices with even layers, and the conveying devices with the odd layers; the tail end of the conveying device of the odd layer is arranged above the front end of the conveying device of the even layer; the tail end of the conveying device of the even layer is arranged above the front end of the conveying device of the next odd layer;
and the partition plate is arranged in front of the even-layer conveying device, and two sides of the partition plate are respectively connected with the even-layer conveying device and the inner wall of the drying chamber.
As an improvement of the technical scheme of the heat pump partition drying system with the multi-stage regenerative dehumidification, the multi-stage regenerative dehumidification system comprises a first regenerative dehumidifier and a second regenerative dehumidifier;
the drying chamber comprises at least five conveying devices, three gas flow areas are divided into a first area, a second area and a third area in the drying chamber;
the first regenerative dehumidifier is arranged between the first area and the second area; the second regenerative dehumidifier is arranged between the second area and the third area.
As an improvement of the technical scheme of the multistage regenerative dehumidification heat pump partition drying system, a guide plate is arranged above each conveying device, and the inclination direction of the guide plate is the same as the gas flowing direction.
As an improvement of the technical scheme of the heat pump partition drying system with multi-stage regenerative dehumidification, the regenerative dehumidifier is a dividing wall type cross flow heat exchanger.
As an improvement of the technical scheme of the heat pump partition drying system with multi-stage regenerative dehumidification, the heat pump partition system comprises the compressor, the evaporator and a throttle valve; the condenser comprises a first condenser and a second condenser; the compressor is connected with the first condenser, the second condenser and the throttle valve in sequence through pipelines, and the throttle valve is connected with the compressor.
The utility model has the beneficial effects that:
in the utility model, three drying areas are formed by combining a plurality of conveying devices and a plurality of partition plates with a first condenser, a second condenser of a heat pump partition system and a first regenerative dehumidifier and a second regenerative dehumidifier of a multi-stage regenerative dehumidification system. The continuous dehydration effect in the drying and dehumidifying process is realized through the first regenerative dehumidifier, the second regenerative dehumidifier and the evaporator, the partition drying effect is realized, and meanwhile, the air dewatering or dehydration is realized through the multi-stage regenerative and dehumidifying structure; according to the utility model, through the heat pump partition system and the multistage regenerative dehumidification system, the air temperature is continuously increased and the air humidity is reduced in the dehumidification process, so that the problems of moisture and low temperature which are continuously accumulated in the air in the dehumidification process can be solved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of a heat pump partitioning system according to the present utility model;
FIG. 3 is a schematic diagram of a prior art conveyor belt;
fig. 4 is a schematic view of the structure of the conveyor belt according to the present utility model.
Reference numerals illustrate: 1-a compressor; 2-an evaporator; 3-throttle valve; 4-a first condenser; 5-a second condenser; 6-a first fan; 7-a second fan; 8-a third fan; 9-a fourth fan; 10-a first regenerative dehumidifier; 11-a second regenerative dehumidifier; 12-a first drain pipe; 13-a second drain; 14-a third drain pipe; 15-a filter screen; 16-a water pan; 17-a first conveyor belt; 18-a first gas circulation flow path; 19-a second gas circulation flow path; 20-a third gas circulation flow path; 21-partitioning plates; 22-a deflector; 23-wet material inlet; 24-crawler belt; 25-rotating shaft.
Detailed Description
In order to make the objects, technical solutions and advantageous effects of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments of the present utility model.
As shown in fig. 1 and 2, a heat pump partition drying system with multi-stage regenerative dehumidification includes a drying chamber, a multi-stage regenerative dehumidification system and a heat pump partition system.
The drying chamber is used for drying wet materials, and a plurality of mutually independent areas are divided into the drying chamber; the heat pump zoning system is used for providing hot air for the drying chamber and driving air flow in each zone; the multistage backheating dehumidification system is used for realizing gas flow in a plurality of mutually independent areas and realizing the effect of regional dehumidification, and the three mutually cooperate and combine the problem that the dehumidification effect of the heat pump drying system is poor in the prior art.
In the present utility model, the heat pump partitioning system includes a plurality of fans, a compressor 1 and a condenser, wherein the compressor 1 and the condenser are connected to each other. The multistage regenerative dehumidifier system comprises a regenerative dehumidifier. A plurality of mutually independent gas flow areas are divided into the drying chamber, a fan is arranged at the front end of each gas flow area, and a corresponding gas circulation flow path is formed in each area; the plurality of gas flow areas are arranged from top to bottom, and a regenerative dehumidifier is arranged between two adjacent gas flow areas.
The upper part of the drying chamber is provided with a wet material inlet 23, a material conveying channel is formed in the drying chamber, and wet materials are sequentially conveyed through a plurality of gas flow channels through the material conveying channel; the heat pump partition system is arranged on one side of the drying chamber, and the condenser is arranged at the front end of the material conveying channel.
Preferably, the regenerative dehumidifier is a dividing wall type cross flow heat exchanger.
Further, the heat pump partition system comprises a compressor 1, an evaporator 2 and a throttle valve 3; the condenser comprises a first condenser 4 and a second condenser 5; the compressor 1 is connected with the first condenser 4, the second condenser 5 and the throttle valve 3 in sequence through pipelines, and the throttle valve 3 is connected with the compressor 1.
In some embodiments of the present utility model, the drying chamber includes a plurality of conveyors and a plurality of partition plates 21, the plurality of conveyors are disposed in parallel from top to bottom, and the drying chamber is divided into a plurality of independent gas flow areas by the plurality of conveyors and the plurality of partition plates 21.
Further, a baffle 22 is disposed above each conveying device, and the inclined direction of the baffle 22 is the same as the direction of the gas flow.
In some embodiments of the present utility model, each of the conveying devices includes at least two rotating shafts 25, and a conveyor belt is disposed outside the at least two rotating shafts 25, and the conveyor belt is disposed outside the plurality of rotating shafts 25 in a surrounding manner. That is, each conveyor is a crawler belt 24, and each crawler belt 24 is provided non-tautly outside at least two rotating shafts 25.
In some embodiments of the utility model, the drying chamber comprises a plurality of conveying devices, and the front end of the uppermost conveying device is arranged below the wet material inlet 23; the plurality of conveying devices comprise a plurality of conveying devices with odd layers and a plurality of conveying devices with even layers, and the plurality of conveying devices with odd layers; the tail end of the conveying device of the odd layer is arranged above the front end of the conveying device of the even layer; the tail end of the conveying device of the even layer is arranged above the front end of the conveying device of the next odd layer; and the end of the even-layer conveying device is provided with a partition plate 21, and two sides of the partition plate 21 are respectively connected with the even-layer conveying device and the inner wall of the drying chamber.
In some embodiments of the present utility model, the multi-stage regenerative dehumidification system includes a first regenerative dehumidifier 10 and a second regenerative dehumidifier 11; the drying chamber comprises at least five conveying devices, three gas flow areas are divided into a first area, a second area and a third area in the drying chamber; a first regenerative dehumidifier 10 is arranged between the first region and the second region; a second regenerative dehumidifier 11 is provided between the second region and the third region.
As an embodiment of the present utility model, the present utility model will now be described in detail with reference to fig. 1 to 4.
The heat pump partition system comprises a compressor 1, an evaporator 2, a throttle valve 3, a condenser and a plurality of fans, wherein the condenser comprises a first condenser 4 and a second condenser 5, the first condenser 4 is a high-temperature condenser compared with the second condenser 5, and the second condenser 5 is a low-temperature condenser.
The multi-stage regenerative dehumidifier system comprises a regenerative dehumidifier, wherein the regenerative dehumidifier comprises a first regenerative dehumidifier 10 and a second regenerative dehumidifier 11. The first regenerative dehumidifier 10 is a high-temperature-stage regenerative dehumidifier, and the second regenerative dehumidifier 11 is a low-temperature-stage regenerative dehumidifier, compared with the second regenerative dehumidifier 11.
In the drying chamber, the space in which the gas flows in the drying chamber is formed by the five conveying means and the plurality of partition plates 21 into three gas flow areas which are provided in the drying chamber from top to bottom and which are independent of each other. The three gas flow areas are a first area, a second area and a third area respectively, and a first regenerative dehumidifier 10 and a second regenerative dehumidifier 11 are arranged between the first area and the second area. The heat pump partition system comprises three fans, wherein the three fans are a first fan 6, a second fan 7 and a third fan 8, and the first fan 6, the second fan 7 and the third fan 8 are respectively and correspondingly arranged at the front ends of a first area, a second area and a third area.
As shown in fig. 1, the heat pump partition system is provided at one side of the drying chamber, the compressor 1, the evaporator 2, the first condenser 4, the second condenser 5 and the throttle valve 3 are connected through pipes, and the throttle valve 3 is also connected to the above-mentioned compressor 1. The pipeline is a hollow metal pipeline, preferably a hollow copper pipe, so that the heat conduction effect of the pipeline is ensured. And heat pump working medium is injected into the pipeline.
The multi-heat regenerative dehumidification system comprises a first regenerative dehumidifier 10 and a second regenerative dehumidifier 11.
The upper part of the drying chamber is provided with a wet material inlet 23 for facilitating the entry of wet material into the drying chamber.
Five conveying devices are arranged in the drying chamber from top to bottom, each conveying device is arranged in a layered mode, each conveying device is arranged along the length direction of the drying chamber, the front end of the conveying device on the uppermost layer is provided with the first condenser 4, and the wet material inlet 23 is arranged above the conveying device on the uppermost layer.
The plurality of conveying devices comprise a plurality of conveying devices with odd layers and a plurality of conveying devices with even layers, and the plurality of conveying devices with odd layers; the tail end of the conveying device of the odd layer is arranged above the front end of the conveying device of the even layer; the tail end of the conveying device of the even layer is arranged above the front end of the conveying device of the next odd layer; and the end of the even-layer conveying device is provided with a partition plate 21, and two sides of the partition plate 21 are respectively connected with the even-layer conveying device and the inner wall of the drying chamber. Wherein the conveying device is used for realizing the effect of conveying wet materials.
In order to optimize the structure of the present utility model, the compressor 1 is disposed at the lowermost portion, the compressor 1 is disposed under one side of the first condenser 4, the second condenser 5 is disposed under the other side of the first condenser 4, the evaporator 2 is disposed under the second condenser 5, and the throttle valve 3 is disposed between the evaporator 2 and the second condenser 5, and the compressor 1 is disposed behind the compressor 1.
In the combination of the embodiment, the five conveying devices comprise a first conveying device, a second conveying device, a third conveying device, a fourth conveying device and a fifth conveying device which are sequentially arranged from top to bottom. The first conveying device, the third conveying device and the fifth conveying device are conveying devices of odd layers, and the second conveying device and the fourth conveying device are conveying devices of even layers. The front ends of the second conveying device and the fourth conveying device are provided with the partition plate 21, and two sides of the partition plate 21 are respectively connected with the conveying devices of even layers and the inner side walls of the drying chambers.
That is, after the material enters the drying chamber from the wet material inlet 23, the material is transported in the material transport passage of the newcastle in the drying chamber. The wet material is conveyed from the front end of the first conveying device to the rear end of the first conveying device along the first conveying device, then falls to the front end of the second conveying device, then reaches the tail end of the second conveying device along with the operation of the second conveying device, and falls to the front end of the third conveying device at the tail end of the second conveying device; and so on.
Wherein, the front ends of the second conveying device and the fourth conveying device are provided with partition plates 21, at least three mutually independent areas, namely a first area, a second area and a third area, are formed in the drying chamber through the second conveying device and the partition plates 21 corresponding to the second conveying device, and the fourth conveying device and the partition plates 21 corresponding to the fourth conveying device, and a first gas circulation flow path 18, a second gas circulation flow path 19 and a third gas circulation flow path 20 are correspondingly arranged in the first area, the second area and the third area.
The flow paths of the first gas circulation flow path 18, the second gas circulation flow path 19 and the third gas circulation flow path 20 are as shown in fig. 1, and the gas in the first gas circulation flow path 18 flows through the first condenser 4 under the action of the first fan 6, then bypasses the first conveying device, enters the first regenerative dehumidification, and passes through the first condenser 4 again; the gas of the second gas circulation flow path 19 flows through the first regenerative dehumidifier 10 by the second fan 7, bypasses the third conveying device, then enters the second regenerative dehumidifier 11, and returns to the first regenerative dehumidifier 10. The gas of the third gas circulation flow path 20 passes through the second regenerative dehumidifier 11 by the third fan 8, bypasses the fifth conveying device, passes through the second condenser 5, and returns to the second regenerative dehumidifier 11.
Because the first regenerative dehumidifier 10 and the second regenerative dehumidifier 11 are partition wall type cross converters, two airflows can exchange heat and are mutually mixed.
In the utility model, three mutually independent areas are formed in the drying chamber, and each area is correspondingly provided with a gas circulation flow path; when the device is used, the device is matched with a condenser and a regenerative dehumidifier, so that the multi-stage regenerative dehumidification partition drying effect is realized, and the problems that the humidity of air is increased and the temperature is reduced in turn due to dehumidification by using the high Wen Shikong device in the prior art can be avoided, and the dehumidification process is further inhibited.
Specifically, the temperatures of the first gas circulation flow path 18, the second gas circulation flow path 19, and the third gas circulation flow path 20 are higher than the temperatures of the gases in the first gas circulation flow path 18, the second gas circulation flow path 19, and the third gas circulation flow path 20. The path through which the gas in the first gas circulation flow path 18 flows is a high-temperature drying section, the path through which the gas in the second gas circulation flow path 19 flows is a medium-temperature drying section, and the path through which the gas in the third gas circulation flow path 20 flows is a low-temperature drying section. The first condenser 4 and the first fan 6 supply high-temperature air to the first gas circulation flow path 18 of the high-temperature drying section; the second condenser 5 and the third fan 8 supply high temperature air to the third gas circulation flow path 20 of the low temperature drying section. The flow directions of the first gas circulation flow path 18, the second gas circulation flow path 19, and the third gas circulation flow path 20 are shown in fig. 1.
The drying chamber is divided into a high-temperature drying section, a medium-temperature drying section and a low-temperature drying section by the conveying device and the partition plate 21, and the drying effect of the air in the different drying sections is realized.
The first condenser 4 and the second condenser 5 are respectively corresponding to a high-temperature drying section and a low-temperature drying section, and the drying heat source of the medium-temperature drying section is derived from the fact that the first regenerative dehumidifier 10 recovers the waste heat of the gas from the first gas circulation flow path 18 in the high-temperature drying section, and the waste heat heats the air in the second gas circulation flow path 19, so that the effects of energy transfer and dehydration and dehumidification are achieved.
That is, in the present utility model, three drying zones are formed by a plurality of conveyors and a plurality of partition plates 21 in combination with the first condenser 4, the second condenser 5 of the heat pump partition system and the first regenerative dehumidifier 10 and the second regenerative dehumidifier 11 of the multi-stage regenerative dehumidification system. And the continuous dehydration effect in the drying and dehumidification process is realized through the first regenerative dehumidifier 10, the second regenerative dehumidifier 11 and the evaporator 2.
During dehumidification by the first regenerative dehumidifier 10, the wet air of relatively high temperature on the high temperature side of the first regenerative dehumidifier 10 is cooled by the dry air of relatively low temperature from the low temperature side thereof. The high temperature humid air is cooled to a dew point temperature, thereby achieving condensation dehumidification.
During dehumidification by the second regenerative dehumidifier 11, the temperature of the low-temperature humid air on the high-temperature side of the second regenerative dehumidifier 11 is much higher than that of the dry air on the low-temperature side. Since the low-temperature dry air at the low-temperature side comes from the low-temperature evaporator 2 so as to have a lower temperature, the low-temperature wet air at the high-temperature side of the second regenerative dehumidifier 11 is cooled, thereby achieving condensation dehumidification.
In the process of dehumidifying the evaporator 2, by utilizing the low-temperature characteristic of the evaporator 2 in the heat pump zoning system, the water vapor in the low-temperature humid air exchanged by the heat mass in the low-temperature drying section can be effectively condensed into liquid water, thereby realizing further dehumidification.
The first condenser 4 and the second condenser 5 are distinguished according to different states of condenser working media. The high temperature working medium vapour is mainly present in the first condenser 4, whereas the high temperature vapour mixture or liquid working medium is mainly present in the second condenser 5.
In order to reduce the occupied space of the multi-stage regenerative dehumidification heat pump partition drying system, the positions of all parts of the multi-stage regenerative dehumidification heat pump partition drying system are optimized.
The first regenerative dehumidifier 10 is provided directly below the first condenser 4, and the first regenerative dehumidifier 10 is configured to perform heat exchange and dehumidification of the gas in the first gas circulation flow path 18 and the gas in the second gas circulation flow path 19. And a first drain pipe 12 for draining condensed water in the first regenerative dehumidifier 10 is provided at the bottom of the first regenerative dehumidifier 10.
The second regenerative dehumidifier 11 is arranged below the first regenerative dehumidifier 10, the low-temperature side outlet of the second regenerative dehumidifier 11 is provided with the second condenser 5 and the third fan 8, and the effect of heating low-temperature dry air can be realized under the action of the second condenser 5 and the third fan 8. And a second drain pipe 13 for draining condensed water in the second regenerative dehumidifier 11 is provided at the bottom of the second regenerative dehumidifier 11.
The evaporator 2 is disposed below the second regenerative dehumidifier 11, and the evaporator 2 is used for low-temperature dehumidification to remove air moisture in the third gas circulation flow path 20. The inlet of the evaporator 2 is provided with the fourth fan 9, and the front of the fourth fan 9 is provided with the filter screen 15, and dust is filtered through the filter screen 15, so that the dust is prevented from entering the evaporator 2, and the conditions of reducing the dehumidification and heat exchange efficiency are avoided.
A water receiving tray 16 is arranged below the evaporator 2, a third drain pipe 14 is arranged at the bottom of the water receiving tray, the water receiving tray 16 is used for collecting liquid generated by the evaporator 2 in the operation process, and the liquid in the water receiving tray 16 can be drained through the third drain pipe 14.
As shown in fig. 3, the conveyor belts 17 of the prior art are tightly disposed at the outer sides of the rotating shafts 25, and the material is smoothly conveyed on the conveyor belts 17 while the material is conveyed. In the present utility model, as shown in fig. 4, each conveyor comprises at least three rotating shafts 25, at least three rotating shafts 25 are arranged in parallel and are spaced apart from each other, and a crawler belt 24 is wound around the outer sides of at least three rotating shafts 25; the crawler belt 24 is arranged non-tightly outside the at least three rotating shafts 25. Because conveyer is loose crawler-type conveyer belt 24, can make wet material turn-ups through the deformation of crawler-type conveyer belt 24, let high temperature air send into wet material inlayer more easily for dehumidification, improve dehumidification efficiency.
In detail, if fig. 4 shows that the conveying device includes at least three rotating shafts 25, at least three rotating shafts 25 are arranged in parallel and have a certain distance from each other, two outer rotating shafts 25 are used for steering the crawler belt 24, and two outer sides of at least one rotating shaft 25 arranged between the two rotating shafts 25 are contacted with the crawler belt 24 to achieve the effects of contacting and conveying materials; meanwhile, in the utility model, when materials are conveyed by the crawler belt conveyor 24, as at least one rotating shaft 25 is arranged between the two rotating shafts 25 at the outer side, and the crawler belt conveyor 24 is arranged in a non-tightening manner, the crawler belt conveyor 24 between the two adjacent rotating shafts 25 can be recessed downwards, when the materials are continuously conveyed, the rotating shaft 25 arranged in the middle part protrudes relative to the crawler belt conveyor 24, so that the materials are turned over, and/or the materials protrude when passing through the rollers, cracks are generated, namely the inner layer of the materials is turned over, so that high-temperature air is more easily fed into the inner layer of wet materials, dehumidification is accelerated, and dehumidification efficiency is improved.
Furthermore, the guide plates 22 are arranged above each conveying device, the inclined direction of each guide plate 22 is the same as the flowing direction of the gas, and the air is directly guided to the surface of the wet material through the flowing direction of the air guided by the guide plates 22, so that the air is easier to contact with the material, and the drying effect is better realized.
In the utility model, when the heat pump is started, the heat pump working medium is compressed into high-temperature working medium steam by the compressor 1 and is conveyed to the first condenser 4, and the gas in the first gas circulation flow path 18 exchanges heat with the high-temperature working medium steam in the first condenser 4 under the driving of the first fan 6, so that the gas in the first gas circulation flow path 18 is heated into high-temperature dry air.
At this time, the high-temperature working medium is cooled to a gas-liquid mixture or liquid working medium of a slightly low temperature, and is sent to the second condenser 5, and is used to heat the air in the third gas circulation flow path 20. At this time, the original high-temperature working medium is cooled into a working medium with supercooling degree, namely a refrigerating working medium.
The refrigerant is throttled by the throttle valve 3, and the gas-liquid mixed refrigerant generating low temperature and low pressure flows into the evaporator 2 for cooling the air in the third gas circulation flow path 20 and realizing the condensation dehumidification effect.
In the high temperature drying section, the air in the first air circulation flow path 18 is subjected to heat exchange through the first condenser 4, is heated to be high temperature dry air, is conveyed into the first conveying device under the drive of the first fan 6, and descends under the action of the deflector 22, so that the high temperature dry air is blown to the surface of wet materials. Simultaneously, through including non-tight crawler belt 24, make wet material turn-ups, combine the effect of guide plate 22, make the high temperature dry air more easily go deep into wet material inlayer to dehumidification efficiency has been improved.
After the high temperature dry air in the first air circulation flow path 18 exchanges heat with the wet material in the high temperature drying section, the high temperature high humidity air is changed into high temperature high humidity air, and the high temperature wet air passes through the high temperature side of the first regenerative dehumidifier 10 to exchange heat with the low temperature dry air at the low temperature side of the first regenerative dehumidifier 10.
Since the first regenerative dehumidifier 10 can realize heat exchange between the two air streams without mixing with each other, the heat carried by the high-temperature wet air in the first air circulation path 18 on the high-temperature side of the first regenerative dehumidifier 10 is transferred to the low-temperature dry air in the second air circulation path 19. The low-temperature dry air in the second air circulation flow path 19 is heated to high-temperature dry air, and is used for drying in the intermediate-temperature drying section by the second fan 7. However, the high temperature humid air at the high temperature side of the first regenerative dehumidifier 10 is cooled to low temperature air, and water vapor in the low temperature air is condensed to liquid water to be discharged through the first drain pipe 12. At this time, the air in the first air circulation flow path 18 passes through the first regenerative dehumidifier 10 and flows back to the first condenser 4 again by the heat pump partition system.
The high-temperature dry air is used for drying in the medium-temperature drying section under the drive of the second fan 7, and the high-temperature dry air is correspondingly air in the second air circulation flow path 19. The high-temperature dry air is driven by the second fan 7 and subjected to high-efficiency heat and mass exchange under the action of the guide plate 22 and the crawler-type conveyor belt 24, so that the effect of high-efficiency dehumidification is realized. The wet material of the intermediate temperature drying section is dried to a wet material having a low moisture content.
The high temperature dry air in the second air circulation flow path 19 is changed into low temperature wet air after heat mass exchange with wet material in the intermediate temperature drying section, and flows into the high temperature side of the second regenerative dehumidifier 11.
In the second regenerative dehumidifier 11, the temperature of the gas in the second gas circulation flow path 19 on the high temperature side is considerably lower than the temperature of the gas in the third gas circulation flow path 20 on the low temperature side. Therefore, the wet air at the high temperature side of the second regenerative dehumidifier 11 is cooled and condensed into liquid water, which can be discharged through the second drain pipe 13.
In the second regenerative dehumidifier 11, the air in the second air circulation flow path 19 on the high temperature side is cooled to be discharged as low-temperature dry air, and flows to the low temperature side of the first regenerative dehumidifier 10. The air is heated by the high-temperature humid air on the high-temperature side in the first regenerative dehumidifier 10, and the heated air is used for drying and dehumidifying in the intermediate-temperature drying section again.
The air in the third air circulation flow path 20 flows out from the low temperature side in the second regenerative dehumidifier 11 and is heated by the second condenser 5 to be high temperature dry air; and under the drive of the third fan 8, carrying out heat and mass exchange with the low-water-content wet material in the low-temperature drying section. And under the action of the deflector 22 and the crawler belt 24, the effect of efficient dehumidification is further achieved, and finally the wet material with low water content can be dried into dry material.
The air in the third air circulation flow path 20 is dehumidified in the low-temperature drying section to become low-temperature wet air, and the low-temperature wet air is blown to the evaporator 2 under the driving of the fourth fan 9, and dust in the air is filtered through the filter screen 15.
Because the low-temperature working medium in the evaporator 2 has very low temperature, the low-temperature high-humidity air in the third gas circulation flow path 20 can be effectively cooled, and the water vapor in the air is condensed into liquid water, is collected by the water receiving disc 16 and is discharged through the third drain pipe 14, and finally the low-temperature high-humidity air is changed into low-temperature low-humidity air.
The low-temperature and low-humidity air in the third air circulation flow path 20 discharged through the evaporator 2 is sent to the low-temperature side of the second regenerative dehumidifier 11, and exchanges heat in the second regenerative dehumidifier 11. In the high temperature side of the second regenerative dehumidifier 11, the low temperature humid air is cooled and some of the above-described dehumidification process is re-achieved, which is: in the second regenerative dehumidifier 11, the temperature of the gas in the second gas circulation flow path 19 on the high temperature side is considerably lower than the temperature of the gas in the third gas circulation flow path 20 on the low temperature side. Therefore, the wet air at the high temperature side of the second regenerative dehumidifier 11 is cooled and condensed into liquid water, which can be discharged through the second drain pipe 13.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Claims (8)
1. The heat pump partition drying system comprises a drying chamber and is characterized by also comprising a multi-stage regenerative dehumidification system and a heat pump partition system;
the heat pump partition system comprises a plurality of fans, and a compressor and a condenser which are connected with each other;
the multi-stage regenerative dehumidification system comprises a regenerative dehumidifier;
the drying room is divided into a plurality of mutually independent gas flow areas, the front end of each gas flow area is provided with the fan, and a corresponding gas circulation flow path is formed in each area; the plurality of gas flow areas are arranged from top to bottom, and the regenerative dehumidifier is arranged between two adjacent gas flow areas;
the upper part of the drying chamber is provided with a wet material inlet, a material conveying channel is formed in the drying chamber, and wet materials are sequentially conveyed through the material conveying channel to pass through a plurality of gas flow areas;
the heat pump partition system is arranged on one side of the drying chamber, and the condenser is arranged at the front end of the material conveying channel.
2. The multi-stage regenerative dehumidification heat pump zoned drying system of claim 1, wherein the drying chamber comprises a plurality of conveying devices and a plurality of zoned plates, the plurality of conveying devices are arranged in parallel from top to bottom, and the drying chamber is divided into a plurality of mutually independent gas flow areas by the plurality of conveying devices and the plurality of zoned plates.
3. The multi-stage regenerative dehumidification heat pump zoned drying system of claim 2, wherein each of the conveyor comprises at least three shafts, the at least three shafts being juxtaposed and spaced from each other, and the conveyor belt is circumferentially disposed about the outer sides of the at least three shafts.
4. The multi-stage regenerative dehumidification heat pump zoned drying system according to claim 2, wherein the drying chamber comprises a plurality of conveying devices, and the front end of the uppermost conveying device is arranged below the wet material inlet;
the conveying devices comprise a plurality of conveying devices with odd layers and a plurality of conveying devices with even layers, and the conveying devices with the odd layers; the tail end of the conveying device of the odd layer is arranged above the front end of the conveying device of the even layer; the tail end of the conveying device of the even layer is arranged above the front end of the conveying device of the next odd layer;
and the partition plate is arranged in front of the even-layer conveying device, and two sides of the partition plate are respectively connected with the even-layer conveying device and the inner wall of the drying chamber.
5. The multi-stage regenerative dehumidification heat pump zoned drying system of claim 2, wherein the multi-stage regenerative dehumidification system comprises a first regenerative dehumidifier and a second regenerative dehumidifier;
the drying chamber comprises at least five conveying devices, three gas flow areas are divided into a first area, a second area and a third area in the drying chamber;
the first regenerative dehumidifier is arranged between the first area and the second area; the second regenerative dehumidifier is arranged between the second area and the third area.
6. The multi-stage regenerative dehumidification heat pump zone drying system of claim 2, wherein a baffle is disposed above each of the transfer devices, the baffle having an inclination in the same direction as the gas flow.
7. The multi-stage regenerative dehumidification heat pump zone drying system of claim 1, wherein the regenerative dehumidifier is a dividing wall type cross flow heat exchanger.
8. The multi-stage regenerative dehumidification heat pump zoned drying system of claim 1, wherein the heat pump zoned system comprises the compressor, an evaporator and a throttle valve; the condenser comprises a first condenser and a second condenser; the compressor is connected with the first condenser, the second condenser and the throttle valve in sequence through pipelines, and the throttle valve is connected with the compressor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320708479.9U CN220602085U (en) | 2023-04-03 | 2023-04-03 | Multistage backheating dehumidification's heat pump subregion drying system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320708479.9U CN220602085U (en) | 2023-04-03 | 2023-04-03 | Multistage backheating dehumidification's heat pump subregion drying system |
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| CN220602085U true CN220602085U (en) | 2024-03-15 |
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| CN202320708479.9U Active CN220602085U (en) | 2023-04-03 | 2023-04-03 | Multistage backheating dehumidification's heat pump subregion drying system |
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| CN (1) | CN220602085U (en) |
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- 2023-04-03 CN CN202320708479.9U patent/CN220602085U/en active Active
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