CN214250383U - Combined heat exchange type drying device with high heat capacity - Google Patents
Combined heat exchange type drying device with high heat capacity Download PDFInfo
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- CN214250383U CN214250383U CN202120201885.7U CN202120201885U CN214250383U CN 214250383 U CN214250383 U CN 214250383U CN 202120201885 U CN202120201885 U CN 202120201885U CN 214250383 U CN214250383 U CN 214250383U
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Abstract
The utility model discloses a combined heat exchange type drying device with high heat capacity, which comprises a heat source and a drying tower, wherein the drying tower is provided with a tempering bin, a drying chamber and a collecting chamber from top to bottom, the heat source is connected with the drying chamber, and the heat source is a hot water boiler; a vertically arranged partition plate is arranged in the drying chamber, the partition plate divides the drying chamber into a hot water flow passage and a material flow passage which are distributed at intervals and are not communicated with each other, the material flow passage is communicated with the tempering bin and the collection chamber from top to bottom, and the hot water flow passage is communicated with the hot water boiler from front to back after being sealed from top to bottom; an air pipe is arranged in the hot water flow passage and penetrates through the two sides of the hot water flow passage to be communicated with the material flow passage. Compared with the prior art, the utility model has the following advantages: the water with large thermal capacity is used as a heat supply medium to convey heat into the drying chamber, so that the energy density is high, and the fan load of the dryer is reduced; the materials are heated by adopting a plurality of heat transfer modes of radiation heat transfer, contact heat transfer and dividing wall type heat transfer, various advantages are comprehensively utilized, and the material drying efficiency is improved.
Description
Technical Field
The utility model relates to a drying equipment field especially relates to a combined heat transfer formula drying device of high heat capacity.
Background
In the field of drying, particularly in the aspect of grain drying, most of the currently adopted technologies use hot air as a medium, and the hot air directly contacts with grains to exchange heat and transfer mass, so that the drying effect is achieved. The existing grain dryer has low drying efficiency and high energy consumption, so that the production efficiency and the economic cost cannot be improved. The heat capacity of air is low, the contained energy is very limited, and the temperature is reduced quickly after passing through the grain layer; and because of reasons such as quality and taste, the surface temperature of the grain cannot exceed a certain limit in the drying process, which leads to that the heat transfer quantity cannot be increased by adopting a scheme of increasing the hot air temperature, and finally the heat delivery quantity can be increased only by increasing the air speed. After the wind speed is increased, a series of problems of increased kinetic energy loss, increased dust treatment capacity, noise, increased equipment cost and the like are brought, the economy is reduced, and the industry development is restricted.
The utility model provides a high heat capacity's combination heat transfer formula drying device, fundamentally has changed the structure and the heat transfer mode of traditional drying-machine, is particularly useful for the material stoving processing that has temperature restriction such as grain.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a combined heat transfer formula drying device of high heat capacity.
The utility model discloses a realize through following technical scheme: a combined heat exchange type drying device with high heat capacity comprises a heat source and a drying tower, wherein the drying tower is provided with a tempering bin, a drying chamber and a collecting chamber from top to bottom, the heat source is connected with the drying chamber, and the heat source is a hot water boiler; a vertically arranged partition plate is arranged in the drying chamber, the partition plate divides the drying chamber into a hot water flow passage and a material flow passage which are distributed at intervals and are not communicated with each other, the material flow passage is communicated with the tempering bin and the collection chamber from top to bottom, and the hot water flow passage is communicated with the hot water boiler from front to back after being sealed from top to bottom; an air pipe is arranged in the hot water flow passage and penetrates through the two sides of the hot water flow passage to be communicated with the material flow passage.
As a further improvement to the above scheme, at least two hot water flow passages and at least two material flow passages are respectively arranged.
As a further improvement to the scheme, the air pipes in the two adjacent hot water flow passages are arranged in a staggered mode.
As a further improvement of the scheme, one end of the air pipe, which leads to the material flow passage, is provided with a ventilating separation net.
As a further improvement to the above scheme, the water inlet of the hot water flow channel is positioned at the bottom of the flow channel, and the water outlet is positioned at the top of the flow channel.
As a further improvement of the scheme, the heat-preservation device further comprises a heat-preservation barrel, the hot water boiler is connected with the hot water pump and the inlet of the hot water flow passage, the outlet of the hot water flow passage returns to the hot water boiler through a water return pipe, a three-way valve is arranged between the hot water pump and the hot water flow passage, and three interfaces of the three-way valve are respectively connected with the hot water pump, the hot water flow passage and the heat-preservation barrel.
As a further improvement to the scheme, the installation position of the heat-preserving barrel is higher than the top of the drying chamber.
As a further improvement of the scheme, the hot water boiler is a combustion type hot water boiler, at least one hot water flow passage is a smoke flow passage, and the smoke flow passage is communicated with a smoke outlet of the hot water boiler.
As a further improvement to the scheme, one side of the drying chamber is provided with an air inlet, the other side of the drying chamber is provided with an air outlet, and the air inlet and the air outlet are communicated with the material flow passage through an air pipe.
As a further improvement to the above solution, more than one air inlet and air outlet are provided on the drying chamber.
Compared with the prior art, the utility model has the following advantages: the water with large thermal capacity is used as a heat supply medium to convey heat into the drying chamber, so that the energy density is high, and the fan load of the dryer is reduced; the materials are heated by adopting a plurality of heat transfer modes of radiation heat transfer, contact heat transfer and dividing wall type heat transfer, various advantages are comprehensively utilized, and the material drying efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the scheme in example 1.
Fig. 2 is a sectional view of a surface a-a of the drying chamber portion of fig. 1.
Fig. 3 is a cross-sectional view schematically showing a part of a drying chamber in embodiment 1.
FIG. 4 is a schematic structural view of the scheme in example 2.
Fig. 5 is a cross-sectional view schematically showing a part of a drying chamber in embodiment 2.
Fig. 6 is a cross-sectional view schematically showing a part of a drying chamber in embodiment 3.
Detailed Description
The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The utility model provides a high heat capacity's joint heat transfer formula drying device, includes heat source and drying tower, and the drying tower from top to bottom sets up slow su storehouse 11, drying chamber 12 and collection chamber 13, and the heat source is connected its characterized in that with drying chamber 12: the heat source is a hot water boiler; a vertically arranged partition plate 4 is arranged in the drying chamber 12, the drying chamber 12 is divided into a hot water flow passage 7 and a material flow passage 6 which are distributed at intervals and are not communicated with each other by the partition plate 4, the material flow passage 6 is communicated with the tempering bin 11 and the collecting chamber 13 in a vertically through manner, and the hot water flow passage 7 is communicated with a hot water boiler in a vertically closed manner in a front-to-back through manner; an air pipe 5 is arranged in the hot water flow passage 7, and the air pipe 5 penetrates through two sides of the hot water flow passage 7 and is communicated with the material flow passage 6. According to the scheme, hot water is directly fed into the drying chamber 12 and subjected to dividing-wall type heat exchange with materials, and as the heat capacity of water is higher than that of air by several orders of magnitude, the reduction range of water temperature is very small in the heat exchange process, and the temperature of the hot water runner 7 can be basically kept stably controlled; in the process of dividing wall type heat exchange, the partition plate 4 is heated and then carries out heat radiation on the material in the material flow passage 6; in addition, in order to ensure that moisture in the materials can be quickly dissipated, the air pipe 5 sends air into the material flow channel 6 from one side, the water vapor is carried out while air is discharged from the other side, the air not only plays a role in discharging the water vapor when flowing between the materials, but also sends heat into the middle part from two sides of the material flow channel 6. Because the air pipe 5 passes through the hot water flow passage 7 and is blown into the material flow passage 6 after exchanging heat with hot water, the heat exchange between the material and the hot water can be further promoted. In this scheme, have several kinds of heat transfer modes such as the dividing wall type heat transfer of hot water and material, the dividing wall type heat transfer of air and hot water, the contact heat transfer of air and material, baffle 4 to the heat radiation of material simultaneously, united several kinds of heat transfer's mode, both guaranteed thermal quick supply, also can avoid the material temperature to exceed the alert value simultaneously.
The drying chamber 12 is provided with an air inlet 51 at one side and an air outlet 52 at the other side, and the air inlet 51 and the air outlet 52 are communicated with the material flow passage through the air pipe 5. So set up, the air can pass material runner 6 many times, has improved the humidity in the air, reduces the speed that scatters and disappears of material surface moisture to guarantee that material surface temperature can control, avoid taking place because of the condition that the high temperature made the quality reduce.
At least two hot water flow passages 7 and at least two material flow passages 6 are respectively arranged. The high moisture content of the surface of the material can limit the rising speed of the surface temperature of the material, thereby prolonging the heating time of the material. The air is when the first layer material runner 6 of flowing through, bring out the humidity that has increased the air with moisture, when getting into lower floor material runner 6, because air humidity increases, the moisture on material surface slows down that scatters and disappears, avoided the material overtemperature to lead to the condition of material degeneration or quality reduction, can increase the heat time to the material simultaneously, make the inside temperature of material obtain the improvement of higher range, accelerate moisture at the inside motion of material, finally reach the effect that improves drying efficiency.
The air pipes 5 in the two adjacent hot water flow passages 7 are arranged in a staggered way. The staggered air pipes 5 can prolong the path of air as far as possible, prolong the contact time of the air and materials and improve the heat transfer and mass transfer effects.
And one end of the air pipe 5, which is communicated with the material flow passage 6, is provided with a ventilating separation net. The function of the screen is to prevent the material from entering the air pipe 5 and causing blockage.
The water inlet of the hot water flow passage 7 is positioned at the bottom of the flow passage, and the water outlet is positioned at the top of the flow passage.
Still include heat-preserving container 3, hot water boiler and hot-water pump 21 are connected with the entry of hot water runner 7, and the export of hot water runner 7 returns hot water boiler through wet return 23, is provided with three-way valve 22 between hot water pump 21 and hot water runner 7, and three interfaces of three-way valve 22 are connected hot-water pump 21, hot water runner 7 and heat-preserving container 3 respectively. In the normal drying process, the three-way valve is communicated with the hot water pump 21 and the hot water flow passage 7 to continuously provide hot water for the drying chamber 12; when temporary shutdown maintenance or fault removal is carried out, the three-way valve is communicated with the hot water pump 21 and the heat-preserving barrel 3, and the hot water pump 21 in the system is put into the heat-preserving barrel 3; after the overhaul is finished, the heat-preserving barrel 3 and the hot water flow channel 7 are communicated, and hot water returns to the system, so that the equipment does not need to wait for the temperature rise of the hot water for a long time when being restarted, and the energy loss is reduced.
The insulating tub 3 is installed higher than the top of the drying chamber 12.
Example 2
In embodiment 1, the hot water boiler 2 is a combustion hot water boiler 2, at least one hot water flow channel 7 is a flue gas flow channel 8, and the flue gas flow channel 8 is communicated with a flue gas outlet 81 of the hot water boiler 2. The hot flue gas of combustion formula boiler 2 still has certain heat behind the heat transfer with water, lets in the drying chamber with boiler 2's flue gas, can further improve thermal utilization efficiency.
Example 3
In the combined heat exchange drying apparatus with high heat capacity as in embodiment 1, the air is introduced into and discharged from the drying chamber 12 in two or one inlet and two outlet, i.e. two air inlets 51 and one air outlet 52 or one air inlet 51 and two air outlets 52. Both sides and the inside of the drying chamber 12 can be provided with air inlets 51 or air outlets 52 according to requirements, and a plurality of air inlets 51 and air outlets 52 are arranged according to the processing requirements and characteristics of materials, so that the humidity of air in the drying process can be adjusted, and all drying parameters can be comprehensively regulated and controlled.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a high heat capacity's joint heat transfer formula drying device, includes heat source and drying tower, and the drying tower from top to bottom sets up slow su storehouse, drying chamber and collection room, the heat source with the drying chamber is connected its characterized in that: the heat source is a hot water boiler; the drying chamber is internally provided with a vertically arranged partition plate, the partition plate divides the drying chamber into a hot water flow passage and a material flow passage which are distributed at intervals and are not communicated with each other, the material flow passage is communicated with the tempering bin and the collection chamber in a vertically through manner, and the hot water flow passage is communicated with a hot water boiler in a vertically through manner before and after being sealed; an air pipe is arranged in the hot water flow passage and penetrates through two sides of the hot water flow passage to be communicated with the material flow passage.
2. A high heat capacity combined heat exchange drying apparatus as claimed in claim 1, wherein: the hot water flow passage and the material flow passage are at least two.
3. A high heat capacity combined heat exchange drying apparatus as claimed in claim 1, wherein: the air pipes in the two adjacent hot water flow channels are arranged in a staggered mode.
4. A high heat capacity combined heat exchange drying apparatus as claimed in claim 1, wherein: and one end of the air pipe, which is communicated with the material flow passage, is provided with a ventilating separation net.
5. A high heat capacity combined heat exchange drying apparatus as claimed in claim 1, wherein: the water inlet of the hot water flow channel is positioned at the bottom of the flow channel, and the water outlet is positioned at the top of the flow channel.
6. A high heat capacity combined heat exchange drying apparatus as claimed in claim 1, wherein: the hot water boiler is connected with the hot water pump and the inlet of the hot water flow channel, the outlet of the hot water flow channel returns to the hot water boiler through the water return pipe, a three-way valve is arranged between the hot water pump and the hot water flow channel, and three interfaces of the three-way valve are respectively connected with the hot water pump, the hot water flow channel and the heat preservation barrel.
7. A high heat capacity combined heat exchange drying apparatus as claimed in claim 6, wherein: the installation position of the heat-preserving barrel is higher than the top of the drying chamber.
8. A high heat capacity combined heat exchange drying apparatus as claimed in claim 1, wherein: the hot water boiler is a combustion type hot water boiler, at least one hot water flow passage is a smoke flow passage, and the smoke flow passage is communicated with a smoke outlet of the hot water boiler.
9. A high heat capacity combined heat exchange drying apparatus as claimed in claim 1, wherein: one side of the drying chamber is provided with an air inlet, the other side of the drying chamber is provided with an air outlet, and the air inlet and the air outlet are communicated through an air pipe and a material flow passage.
10. A high heat capacity combined heat exchange drying apparatus as claimed in claim 1, wherein: more than one air inlet and air outlet are provided on the drying chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120201885.7U CN214250383U (en) | 2021-01-25 | 2021-01-25 | Combined heat exchange type drying device with high heat capacity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120201885.7U CN214250383U (en) | 2021-01-25 | 2021-01-25 | Combined heat exchange type drying device with high heat capacity |
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| CN214250383U true CN214250383U (en) | 2021-09-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728885A (en) * | 2021-01-25 | 2021-04-30 | 安徽燃博智能科技有限公司 | Combined heat exchange type drying device with high heat capacity |
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- 2021-01-25 CN CN202120201885.7U patent/CN214250383U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728885A (en) * | 2021-01-25 | 2021-04-30 | 安徽燃博智能科技有限公司 | Combined heat exchange type drying device with high heat capacity |
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