CN211717125U - Heat pump type grain drying system with waste heat recovery device - Google Patents
Heat pump type grain drying system with waste heat recovery device Download PDFInfo
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- CN211717125U CN211717125U CN202020217764.7U CN202020217764U CN211717125U CN 211717125 U CN211717125 U CN 211717125U CN 202020217764 U CN202020217764 U CN 202020217764U CN 211717125 U CN211717125 U CN 211717125U
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- 238000001035 drying Methods 0.000 title claims abstract description 106
- 239000002918 waste heat Substances 0.000 title claims abstract description 13
- 238000011084 recovery Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000428 dust Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002023 wood Substances 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 a subsidiary waste heat recovery device's heat pump type grain drying system, include: the drying machine comprises a drying machine and a drying heat pump, wherein a drying exhaust channel is arranged at the top end of the drying machine, a drying air inlet is arranged at the bottom end of the drying machine, and a heat exchange coil is arranged in the drying exhaust channel; the drying heat pump is an air source heat pump, a fresh air inlet and a drying heat pump air outlet are formed in the drying heat pump, and a preheating coil is arranged in the fresh air inlet; the heat exchange coil and the preheating coil are connected through a heat exchange coil water inlet pipe and a heat exchange coil water outlet pipe respectively, and the drying air inlet and the drying heat pump air outlet are connected through a hot air pipeline. The utility model discloses a heat exchange coil places the air exit at the drying-machine, utilizes the drying-machine to air exhaust and the water in the heat exchange coil to carry out the heat exchange, and the water after the heat transfer gets into preheating coil and preheats the new trend, recycles air source heat pump, carries out the hot air inlet requirement that reaches grain drying-machine to preheating the new trend after preheating. The system improves the energy utilization rate and the drying mode is milder.
Description
Technical Field
The utility model belongs to the technical field of grain stoving and specifically relates to a subsidiary waste heat recovery device's heat pump type grain drying system is related to.
Background
With the intensive and large-scale development of grain planting, the mechanization degree of agricultural production is higher and higher, the quantity of grains is large, and the moisture content of the grains which are just collected is high, so that the grains are difficult to intensively dry and mildew, and the losses are caused to farmers and countries. According to the investigation of the grain agriculture organization of the united nations, the loss of the global grains caused by drying and improper storage is as high as 5-10%. In the face of large-batch and high-moisture grains, how to reduce the grain loss after harvesting becomes a very difficult task, and the realization of efficient, safe and economic drying of the grains has a profound significance on grain safety.
The common grain drying equipment usually adopts coal, oil or wood as combustion materials, generates a large amount of smoke and waste gas, causes great pollution to the environment and dried objects, and is time-consuming and labor-consuming. Compared with the prior art, the grain heat pump dryer has the characteristics of high efficiency, energy conservation, environmental protection, low drying temperature, high dehydration rate, sanitation, safety and the like. The heat pump drying technology is a mild and natural drying mode, can retain the nutrient components in the dried substance to the maximum extent and does not damage the original structure. Because the required drying time is short, the influence on the germination rate of the grains is low. The heat pump system is used for drying, so that the pollution of waste gas and waste residue caused by combustion can be avoided. The heat pump drying is a novel drying technology, and realizes the transfer of heat in a low-temperature heat source to a high-temperature heat source at the cost of consuming part of high-grade energy. The heat pump drying is becoming a direction for the development of grain drying technology and equipment in China.
A large amount of exhaust air with higher temperature can be generated in the heat pump drying process, and most of the existing heat pump drying directly exhausts the exhaust air with higher temperature to the atmospheric environment. The exhaust air contains a large amount of dust and impurities, and the direct exhaust causes pollution to the atmospheric environment; and the exhaust air has high temperature and is directly exhausted into the atmosphere to cause energy waste.
At present, partial heat pump type drying systems and dryers in China directly place evaporators of the drying systems and dryers in an exhaust environment, hot air exhausted by the dryers is used as a heat source, and exhaust air contains a large amount of dust and impurities, so that the exhaust air needs to be subjected to dust removal treatment or the evaporators need to be cleaned at intervals, waste of waste heat resources is caused, and meanwhile, the operation cost is relatively high.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model provides a subsidiary waste heat recovery device's heat pump type grain drying system.
The utility model provides a technical scheme that its technical problem adopted is: a heat pump type grain drying system with a waste heat recovery device, comprising:
the drying machine is provided with a drying exhaust channel at the top end, a drying air inlet at the bottom end and a heat exchange coil pipe in the drying exhaust channel;
the drying heat pump is an air source heat pump, the drying heat pump is arranged on one side of the dryer, a source side air inlet is formed in one side of the drying heat pump, a source side air outlet is formed in the other side of the drying heat pump, a fresh air inlet and a drying heat pump air outlet are further formed in the drying heat pump, and a preheating coil pipe is arranged in the fresh air inlet;
the heat exchange coil and the preheating coil are connected through a heat exchange coil water inlet pipe and a heat exchange coil water outlet pipe respectively, and the drying air inlet is connected with the drying heat pump air outlet through a hot air pipeline.
In a preferred embodiment of the present invention, a heat exchange circulating pump is disposed on the outlet pipe of the heat exchange coil.
In a preferred embodiment of the present invention, the drying heat pump includes a condenser and an evaporator, the condenser is disposed near one side of the air outlet of the drying heat pump, the evaporator is disposed near one side of the air inlet at the source side, the drying heat pump further includes a compressor and an expansion valve, the compressor and the expansion valve are equally divided into a heat pump circulation pipeline connecting the condenser and the evaporator respectively.
In a preferred embodiment of the present invention, the fresh air inlet and the drying heat pump air outlet are respectively disposed on two side walls of the drying heat pump in a relative manner.
The utility model has the advantages that: the utility model discloses simple structure, it is reliable reasonable, adopt heat exchange coil to place the air exit at the drying-machine, utilize the drying-machine to air exhaust and the water in the heat exchange coil carry out heat exchange, water after the heat transfer gets into preheating coil and preheats the new trend. The process does not need to consume electric energy, and the temperature of the fresh air is increased. And then, an air source heat pump is utilized to absorb heat from the environment, and the preheated fresh air is reheated by the condenser to meet the air inlet requirement of the grain dryer. Therefore, the problem of high energy consumption of the traditional drying mode is solved, the energy utilization rate of the system is improved, and the drying mode is milder.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
As shown in fig. 1, a heat pump type grain drying system with a waste heat recovery device includes:
the drying machine comprises a drying machine 1, wherein a drying exhaust channel 3 is arranged at the top end of the drying machine 1, a drying air inlet 14 is arranged at the bottom end of the drying machine 1, and a heat exchange coil 2 is arranged in the drying exhaust channel 3;
the drying heat pump 9 is an air source heat pump, the drying heat pump 9 is arranged on one side of the dryer 1, a source side air inlet 13 is arranged on one side of the drying heat pump 9, a source side air outlet 10 is arranged on the other side of the drying heat pump 9, a fresh air inlet 7 and a drying heat pump air outlet 11 are further arranged on the drying heat pump, and a preheating coil 8 is arranged in the fresh air inlet 7;
the heat exchange coil 2 is connected with the preheating coil 8 through a heat exchange coil water inlet pipe 4 and a heat exchange coil water outlet pipe 6, and the drying air inlet 14 is connected with the drying heat pump air outlet 11 through a hot air pipeline 12.
Grains are dried in a dryer 1 through hot air, exhaust air with high relative temperature and containing a large amount of dust is generated in the dryer 1 after being dried through the hot air and is exhausted through an exhaust channel 3 of an air outlet, because a heat exchange coil 2 is arranged in the exhaust channel 3, the heat exchange coil 2 is communicated with one end of a preheating coil 8 through a heat exchange coil water inlet pipe 4, the other end of the preheating coil 8 is communicated with the heat exchange coil 2 through a heat exchange coil water outlet pipe 6, and a drying heat pump air outlet 11 of a drying heat pump 9 is communicated with a dryer air inlet 14 of the dryer 1 through a hot air pipeline 12; the dryer 1 with higher relative temperature exhausts air and exchanges heat with the relatively low-temperature water flowing in the heat exchange coil 2 in the exhaust channel 3, and the fresh air entering the drying heat pump 9 through the fresh air inlet 7 is preheated in the preheating coil 8, so that the heat load of the drying heat pump 9 is reduced, and the aim of saving energy is fulfilled. The utility model discloses thereby utilize the direct heat transfer of heat exchange coil to preheat the coil and reach the purpose of preheating the new trend, carry out waste heat recovery to airing exhaust of grain drying-machine, but the drying-machine after the cooling is aired exhaust and can be directly accessed into the ash room and handle the back and discharge into the atmospheric environment, can not cause the pollution to the environment.
A heat exchange circulating pump 5 is arranged on a water outlet pipe 6 of the heat exchange coil, and the temperature of low-temperature water after heat exchange rises and flows into a preheating coil 8 through a water outlet pipe of the heat exchange coil 6 under the action of the heat exchange circulating pump 5.
The drying heat pump 9 comprises a condenser 9-3 and an evaporator 9-4, the condenser 9-3 is arranged at one side close to an air outlet 11 of the drying heat pump, the evaporator 9-4 is arranged at one side close to an air inlet 13 at the source side, the drying heat pump 9 further comprises a compressor 9-1 and an expansion valve 9-2, and the compressor 9-1 and the expansion valve 9-2 are respectively connected with the condenser 9-3 and the evaporator 9-4 to form a heat pump circulation pipeline; the evaporator 9-4 is also required to be provided with a source side air inlet 13, a source side air outlet 10, an axial flow fan and the like. The fresh air inlet 7 and the drying heat pump air outlet 11 are respectively and oppositely arranged on two side walls of the drying heat pump 9. And the condenser is opposite to the fresh air inlet, the preheating coil 8 is arranged in the fresh air inlet 7 of the condenser 9-3 of the drying heat pump 9, and the fresh air is preheated through the preheating coil 8.
The refrigeration working medium is vaporized into low-temperature low-pressure steam in the evaporator 9-4, the steam is changed into high-temperature high-pressure steam through the compressor 9-1 and then is discharged into the condenser 9-3, heat is released in the condenser 9-3 and is changed into low-temperature high-pressure liquid, the liquid is throttled and decompressed through the expansion valve 9-2, the liquid enters the evaporator 9-4 again to absorb heat and is vaporized into low-temperature low-pressure gaseous refrigerant, and the gaseous refrigerant enters the compressor 9-1 to achieve the purpose of circulating heating.
It is to be emphasized that: the above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (4)
1. The utility model provides a subsidiary waste heat recovery device's heat pump type grain drying system which characterized in that includes:
the drying machine comprises a drying machine (1), wherein a drying exhaust channel (3) is arranged at the top end of the drying machine (1), a drying air inlet (14) is arranged at the bottom end of the drying machine (1), and a heat exchange coil (2) is arranged in the drying exhaust channel (3);
the drying heat pump (9), the drying heat pump (9) is an air source heat pump, the drying heat pump (9) is arranged on one side of the dryer (1), a source side air inlet (13) is arranged on one side of the drying heat pump (9), a source side air outlet (10) is arranged on the other side of the drying heat pump, a fresh air inlet (7) and a drying heat pump air outlet (11) are further arranged on the drying heat pump, and a preheating coil (8) is arranged in the fresh air inlet (7);
the heat exchange coil (2) is connected with the preheating coil (8) through a heat exchange coil water inlet pipe (4) and a heat exchange coil water outlet pipe (6), and the drying air inlet (14) is connected with the drying heat pump air outlet (11) through a hot air pipeline (12).
2. The heat pump type grain drying system with the waste heat recovery device of claim 1, wherein a heat exchange circulating pump (5) is arranged on the water outlet pipe (6) of the heat exchange coil.
3. The heat pump type grain drying system with the waste heat recovery device according to claim 1, wherein the drying heat pump (9) comprises a condenser (9-3) and an evaporator (9-4), the condenser (9-3) is disposed at a side close to the drying heat pump air outlet (11), the evaporator (9-4) is disposed at a side close to the source side air inlet (13), the drying heat pump (9) further comprises a compressor (9-1) and an expansion valve (9-2), and the compressor (9-1) and the expansion valve (9-2) are respectively connected with the condenser (9-3) and the evaporator (9-4) to form a heat pump circulation pipeline.
4. A heat pump type grain drying system with a waste heat recovery device according to claim 2 or 3, wherein the fresh air inlet (7) and the drying heat pump air outlet (11) are respectively oppositely arranged on two side walls of the drying heat pump (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020217764.7U CN211717125U (en) | 2020-02-27 | 2020-02-27 | Heat pump type grain drying system with waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020217764.7U CN211717125U (en) | 2020-02-27 | 2020-02-27 | Heat pump type grain drying system with waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211717125U true CN211717125U (en) | 2020-10-20 |
Family
ID=73395649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020217764.7U Active CN211717125U (en) | 2020-02-27 | 2020-02-27 | Heat pump type grain drying system with waste heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211717125U (en) |
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2020
- 2020-02-27 CN CN202020217764.7U patent/CN211717125U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 116, Jinshan Road, Yangzhou Economic and Technological Development Zone, Yangzhou City, Jiangsu Province Patentee after: Sanop new energy (Jiangsu) Co.,Ltd. Address before: No. 116, Jinshan Road, Yangzhou Development Zone, 225000 Jiangsu Province Patentee before: Baolianhua seven color new energy (Jiangsu) Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A heat pump type grain drying system with an attached waste heat recovery device Effective date of registration: 20231123 Granted publication date: 20201020 Pledgee: China Construction Bank Corporation Yangzhou Development Zone sub branch Pledgor: Sanop new energy (Jiangsu) Co.,Ltd. Registration number: Y2023980066680 |