CN211717127U - Waste heat recovery device for grain dryer - Google Patents
Waste heat recovery device for grain dryer Download PDFInfo
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- CN211717127U CN211717127U CN202020242249.4U CN202020242249U CN211717127U CN 211717127 U CN211717127 U CN 211717127U CN 202020242249 U CN202020242249 U CN 202020242249U CN 211717127 U CN211717127 U CN 211717127U
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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 waste heat recovery device for grain drying-machine, include: heat transfer device and the passageway of airing exhaust, drying-machine air outlet is connected to passageway one end of airing exhaust, heat transfer device 'S heat transfer air intake is connected to one end, heat transfer device includes the box and sets up the heat exchange coil in the box, heat exchange coil is S type distribution, and heat exchange coil' S both ends stretch out the box, the inlet tube and outlet pipe are connected respectively to the both ends of the heat exchange coil who stretches out the box, the last fin that is equipped with of heat exchange coil, heat transfer device still includes and sets up at the heat transfer air outlet relatively with the. The utility model discloses utilize heat transfer device and drying-machine exhaust high temperature to air exhaust and carry out the heat transfer, absorb the waste heat back of airing exhaust, the inside water of heat transfer device is heated and is discharged from the outlet pipe. The hot water produced by the heat exchange device can be used for preheating fresh air of the grain drying heat pump or used as a heat source of the heat pump. The problems of high energy consumption and waste heat of tail gas emission of the traditional drying mode are solved, and the energy utilization rate of the system is improved.
Description
Technical Field
The utility model belongs to the technical field of grain stoving and specifically relates to a waste heat recovery device for grain drying-machine is related to.
Background
The amount of the grains is huge, the airing is difficult to finish in a short time, and the grains are easy to mildew if the grains are not dried in time. The existing grain drying equipment usually adopts coal, oil or wood as combustion materials, can generate a large amount of smoke and waste gas, causes great pollution to the environment and dried objects, and consumes time and labor.
The grain drying heat pump 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 nearly natural drying mode, can reserve the nutrient contents in the dried substances to the maximum extent, does not damage the original structure, and can prevent the pollution of waste gas and waste residue caused by combustion.
In the process of drying by using a grain drying heat pump, low-temperature air is often directly heated to more than 60 ℃ from a low-temperature air environment. For an air source heat pump, in a low-temperature environment, the heat load is large, the attenuation of the heating capacity of a heat pump unit is large, and the problem of hot air temperature fluctuation caused by defrosting needs to be considered. In addition, the grain drying heat pump can generate large amount of hot exhaust air in the drying process, and the exhaust air is generally directly exhausted to the atmospheric environment. The exhaust air has high temperature and is directly exhausted into the atmosphere to cause energy waste.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model provides a waste heat recovery device for grain drying-machine.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a waste heat recovery device for grain drying-machine, includes: a heat exchange device and an air exhaust channel, wherein one end of the air exhaust channel is connected with an air outlet of the dryer, and the other end is connected with a heat exchange air inlet of the heat exchange device,
the heat exchange device comprises a box body and a heat exchange coil arranged in the box body, the heat exchange coil is distributed in an S shape, the two ends of the heat exchange coil stretch out of the box body, the two ends of the heat exchange coil stretching out of the box body are respectively connected with a water inlet pipe and a water outlet pipe, fins are arranged on the heat exchange coil, the distance between the fins is 3-15mm, and the heat exchange device further comprises a heat exchange air outlet which is arranged opposite to a heat exchange air inlet.
The utility model discloses an in the embodiment, still include filter equipment, filter equipment sets up between drying-machine air outlet and heat transfer device.
The utility model discloses an in the embodiment, heat transfer device's play water piping connection drying-machine heat pump.
The utility model has the advantages that: the utility model discloses a heat exchange coil among the heat transfer device is aired exhaust the heating by the high temperature of drying-machine air outlet, has absorbed the waste heat of airing exhaust after, and the temperature in the heat exchange coil risees to become hot water and discharges from the outlet pipe. The hot water produced by the heat exchange device can be used for preheating fresh air of the grain drying heat pump or used as a heat source of the heat pump. Under the condition of preheating the fresh air, the temperature of the fresh air can be increased without consuming electric energy in the process, and the heating load of a host is reduced; when the air-source heat pump is used as a heat source of the heat pump, the air-source heat pump can be used for preheating inlet air of the evaporator on the heat pump source side, so that the operation condition of the air-source heat pump can be obviously improved, and the occurrence of frosting of the fin evaporator is reduced; the waste heat of the exhaust air can be extracted deeply by utilizing the water in the heat exchange coil pipe to be used as a heat source of the water source heat pump, and then the air is heated by the condenser of the heat pump to meet the air inlet requirement of the grain dryer; the utility model provides a high energy consumption and the extravagant problem of exhaust emissions waste heat of traditional stoving mode, improved the energy utilization of system, its drying method is more gentle.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of an embodiment 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.
The first embodiment is as follows: as shown in fig. 1, a waste heat recovery device for grain dryer includes: a heat exchange device and an air exhaust channel 1, wherein one end of the air exhaust channel 1 is connected with an air outlet of the dryer, and the other end is connected with a heat exchange air inlet 2 of the heat exchange device,
heat transfer device includes box 3 and the heat exchange coil 4 of setting in the box, heat exchange coil 4 is S type distribution, just heat exchange coil 4 'S both ends are stretched out the box, and inlet tube 401 and outlet pipe 402 are connected respectively to the both ends of stretching out the heat exchange coil of box, be equipped with fin 5 on heat exchange coil 4, fin 5 has increaseed heat transfer device and high-temperature gas' S heat transfer area, improves heat exchange efficiency, and the interval between the fin is 3-15mm, and in this embodiment, the interval between each fin is 4mm, and the great interval is convenient for dust, impurity in the drying-machine is aired exhaust and is passed through smoothly promptly, only retrieves the heat in airing exhaust to the heat exchange coil, heat transfer device still includes the heat exchange air outlet 6 with heat transfer air intake 2 relative settings.
The heat exchange with the exhaust air at the air outlet of the dryer is realized through the heat exchange coil 4, the water in the heat exchange coil absorbs the heat of the exhaust air of the dryer, the heat recovery of the exhaust air of the dryer is realized, and the purpose of energy conservation is achieved. The hot water produced by heat exchange can be used for preheating fresh air of a grain drying heat pump or used as a heat source of the heat pump. Under the condition of preheating the fresh air, the temperature of the fresh air can be increased without consuming electric energy in the process, so that the heating load of a host is reduced; when the heat source is used as the heat source of the heat pump, the air inlet of the evaporator at the side of the heat pump source can be preheated, the operation condition of the air source heat pump can be obviously improved, and the occurrence of fin frosting is reduced; the waste heat of the exhaust air can be extracted deeply by utilizing the water in the heat exchange coil pipe and then used as a heat source of the water source heat pump, and then the air is heated by the condenser of the heat pump to meet the air inlet requirement of the grain dryer.
Example two: in order to reduce the influence of dust in the exhaust air of the dryer on the heat exchange device, the waste heat recovery device for the grain dryer further comprises a filtering device. The filtering device is arranged between the air outlet of the dryer and the heat exchange device.
In order to specifically explain the position and the function of the filtering device, the embodiment exemplifies one of the filtering devices, as shown in fig. 2, the filtering device includes a cyclone separator 7, an air inlet 701 is arranged at one side of the cyclone separator 7, the air inlet 701 is connected with an air outlet of a dryer, and the top end of the cyclone separator 7 is connected with a heat exchange air inlet 2 through a pipeline 8.
The bottom end of the cyclone separator 7 is provided with a dust storage hopper 702, and the bottom end of the dust storage hopper 702 is provided with a dust exhaust valve 703. And the dust storage hopper 702 is funnel-shaped, which is convenient for discharging dust.
The low-temperature cold water enters the heat exchange coil 4 from the water inlet pipe 401, is heated by the exhaust air of the high-temperature dryer from which the dust is removed and purified by the cyclone separator, absorbs the waste heat of the exhaust air, the temperature of the exhaust air is raised to be hot water and the hot water is discharged from the water outlet pipe 402, and the exhaust air of the dryer is discharged to the atmospheric environment from the heat exchange air outlet 6 after being subjected to dust removal and heat exchange cooling.
The high-temperature dust-containing exhaust air of the grain dryer firstly passes through the filtering device, and the filtered high-temperature gas passes through the heat exchange device. Heat exchange is realized by arranging the heat exchange coil 4 in the heat exchange device, so that high-temperature exhaust air containing dust and impurities generated in the grain drying process is fully recycled after filtering and dedusting.
It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form, and any simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (3)
1. The utility model provides a waste heat recovery device for grain drying-machine which characterized in that includes: a heat exchange device and an air exhaust channel, wherein one end of the air exhaust channel is connected with an air outlet of the dryer, and the other end is connected with a heat exchange air inlet of the heat exchange device,
the heat exchange device comprises a box body and a heat exchange coil arranged in the box body, the heat exchange coil is distributed in an S shape, the two ends of the heat exchange coil stretch out of the box body, the two ends of the heat exchange coil stretching out of the box body are respectively connected with a water inlet pipe and a water outlet pipe, fins are arranged on the heat exchange coil, the distance between the fins is 3-15mm, and the heat exchange device further comprises a heat exchange air outlet which is arranged opposite to a heat exchange air inlet.
2. The waste heat recovery device for the grain dryer according to claim 1, further comprising a filtering device, wherein the filtering device is arranged between the air outlet of the dryer and the heat exchanging device.
3. The waste heat recovery device for the grain dryer according to claim 1 or 2, wherein a water outlet pipe of the heat exchange device is connected with a dryer heat pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020242249.4U CN211717127U (en) | 2020-03-02 | 2020-03-02 | Waste heat recovery device for grain dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020242249.4U CN211717127U (en) | 2020-03-02 | 2020-03-02 | Waste heat recovery device for grain dryer |
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| Publication Number | Publication Date |
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| CN211717127U true CN211717127U (en) | 2020-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020242249.4U Active CN211717127U (en) | 2020-03-02 | 2020-03-02 | Waste heat recovery device for grain dryer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623992A (en) * | 2021-07-21 | 2021-11-09 | 广东申菱环境***股份有限公司 | Heat recovery high-temperature drying device and control method |
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2020
- 2020-03-02 CN CN202020242249.4U patent/CN211717127U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623992A (en) * | 2021-07-21 | 2021-11-09 | 广东申菱环境***股份有限公司 | Heat recovery high-temperature drying device and control method |
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| 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. |