CN110715520A - Environment-friendly and energy-saving drying device - Google Patents
Environment-friendly and energy-saving drying device Download PDFInfo
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- CN110715520A CN110715520A CN201910857878.XA CN201910857878A CN110715520A CN 110715520 A CN110715520 A CN 110715520A CN 201910857878 A CN201910857878 A CN 201910857878A CN 110715520 A CN110715520 A CN 110715520A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/10—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in the open air; in pans or tables in rooms; Drying stacks of loose material on floors which may be covered, e.g. by a roof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/18—Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/02—Biomass, e.g. waste vegetative matter, straw
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention provides an environment-friendly and energy-saving drying device, which comprises a drying room; the positive pressure air supply equipment is arranged at any end in the drying room; the combustion heater is arranged in the drying room and is positioned at the front end of the positive pressure air supply equipment; the drying utensil is arranged in the drying room and is positioned at the front end of the combustion heater; and the negative pressure air supply equipment is arranged at the other end in the drying room. The invention has the advantages that: the structure of the whole combustion heater is more compact and beautiful, and less land resources are occupied; meanwhile, the heating effect of the whole combustion heater is better, so that the consumption of fuel can be reduced, and the cost is reduced.
Description
Technical Field
The invention relates to a drying device, in particular to an environment-friendly and energy-saving drying device.
Background
In daily life, drying devices such as drying boxes and drying rooms are often used for drying marine products (laver, kelp, fish and the like), medicinal materials, mushrooms, tea, vegetables, flowers and fruits, wood and the like. As is well known, in the past decades, fuels for various drying equipments (for example, coal-fired boilers, coal-fired hot air burners, or coal-fired earthen hot air burners) are mainly based on coal combustion, and coal combustion has been increasingly unsuitable as a fuel for drying equipments because of its disadvantages such as heavy pollution, high emission, and environmental hazard. In recent years, with the increasing awareness of environmental protection and the continuous improvement of scientific technology, some drying devices have started to use clean energy to replace coal combustion, for example, resistance wires, electric heating cakes, microwaves, etc. are used as heat sources of drying devices.
However, in the case of industries that have high water content, require high heat, high temperature, large air volume, large air pressure, and high energy usage such as fast time, etc., it is conceivable that 20 tons of purees collected from the sea are dried into about 1.5 tons of dry vegetable products within 24 hours by one drying apparatus, and the energy consumption is required. Therefore, if the seafood is dried using a drying apparatus using a resistance wire, an electric cake, microwave, etc. as a heat source, the cost thereof is naturally two to three times higher than that of burning coal, which is difficult for the ordinary operator to endure. If the new energy equipment of the air energy drying heat pump is used, the heat energy exerted by the new energy equipment can be improved by about 3 times, but the manufacturing of the air energy drying heat pump with over 277KW (calculated by the power of a single group of 44.1W of test combination) not only has extremely high manufacturing cost; moreover, the air energy drying heat pump can be used for drying products with less moisture or small drying containers, and the drying speed and the number of the dried marine products such as laver, kelp and the like with high moisture can not reach more than 60% of the same power.
In order to achieve the purposes of energy saving and consumption reduction, the applicant filed 2018.10.11 on the application date and 201821651493.5 as a utility model entitled combustion heater and drying device for drying laver and kelp in an environmental protection and energy saving manner, and the drying device can solve the problems of high pollution and high harm brought by using a boiler burning coal, a hot air furnace head burning coal or an earth hot air furnace head burning coal as a combustion heating source and industrial benefits at the cost of environmental destruction, and the problems of high energy consumption and high cost brought by using drying equipment using resistance wires, electric heating cakes, microwaves and the like as a heating source, and high equipment price and high cost brought by using the drying equipment of an air energy heat pump. However, when the drying device is used specifically, the following defects exist: the structure of the heater adopts that the combustion heating barrel, the first-stage heat exchanger, the second-stage heat exchangers and the tail gas discharge pipeline are arranged in a hot air heating chamber in a straight line shape, and the drying chamber and the hot air heating chamber are separated, so that the heating effect and the heat utilization rate are reduced; meanwhile, the components are arranged in a straight line, so that the design length of the whole drying chamber is longer (generally about 13 meters), and a large amount of land resources are occupied.
Disclosure of Invention
The invention aims to solve the technical problems of providing an environment-friendly and energy-saving drying device and solving the problems that the heating effect and the heat utilization rate of the existing drying equipment are reduced and the overall design length is too long.
The invention is realized by the following steps: the utility model provides an environmental protection and energy saving drying device, drying device includes:
a drying room;
the positive pressure air supply equipment is arranged at any end in the drying room;
the combustion heater is arranged in the drying room, is positioned at the front end of the positive pressure air supply equipment and conveys air to the combustion heater through the positive pressure air supply equipment for heat exchange to form high-temperature hot air;
the drying utensils are arranged in the drying room and are positioned at the front end of the combustion heater;
at least one negative pressure air supply equipment, negative pressure air supply equipment locates the other end in the stoving room, and pass through negative pressure air supply equipment guide high temperature hot-blast flow through respectively the stoving household utensils heat and dry, and pass through negative pressure air supply equipment will heat the hot-blast emission of moisture that produces after drying outside the stoving room.
Further, the drying device further includes:
an air chamber, the air chamber with malleation air supply equipment is linked together, through the air chamber is for malleation air supply equipment provides required air.
Further, the drying device further includes:
and the positive pressure air supply equipment is fixedly arranged at the inlet end of the air supply equipment outer cover, and the outlet end of the air supply equipment outer cover is provided with a pressure air port with gradually increased diameter.
Further, the combustion heater includes:
the combustion heating barrel is arranged in the drying room;
the heat exchanger is arranged in the drying room, is annularly arranged around the combustion heating barrel, and the interior of the heat exchanger is communicated with the airflow output end of the combustion heating barrel;
the burner is arranged outside the drying room, is communicated with the feeding end of the combustion heating barrel, and sprays fuel and air into the combustion heating barrel through the burner to perform mixed combustion;
and the tail gas emission equipment is arranged outside the drying room, is communicated with the gas outlet end of the heat exchanger and discharges tail gas subjected to heat exchange through the tail gas emission equipment.
Further, the heat exchanger comprises at least:
the first-stage heat exchanger is arranged at the airflow output end of the combustion heating barrel, and the airflow input port of the first-stage heat exchanger is communicated with the airflow output end of the combustion heating barrel;
the air flow output port of the first-stage heat exchanger is communicated with any one end of the first connecting pipe;
the second-stage heat exchanger is arranged on any one side of the combustion heating barrel, and an airflow input port of the second-stage heat exchanger is communicated with the other end of the first connecting pipe;
the air flow output port of the second-stage heat exchanger is communicated with any end of the second connecting pipe;
and the third-stage heat exchanger is arranged on the other side of the combustion heating barrel, an airflow input port of the third-stage heat exchanger is communicated with the other end of the second connecting pipe, and an airflow output port of the third-stage heat exchanger is communicated with the tail gas emission equipment.
Further, the first stage heat exchanger includes:
the first lower hot air flow wind box is communicated with the air flow output end of the combustion heating barrel;
the bottom of each first radiating pipe is communicated with the first lower hot air flow box;
the top of each first radiating pipe is communicated with the first upper hot air flow box, and the first upper hot air flow box is communicated with any one end of the first connecting pipe;
the second stage heat exchanger includes:
the middle inside of the second upper hot air flow wind box is divided into a front hot air flow wind box and a rear hot air flow wind box through an air flow clapboard; the front hot air flow bellows is communicated with the other end of the first connecting pipe, and the rear hot air flow bellows is communicated with any end of the second connecting pipe;
the top of each second radiating pipe is communicated with the second hot air flow box;
the bottom of each second radiating pipe is communicated with the second lower hot air flow box;
the third stage heat exchanger includes:
the third upper hot air flow box is communicated with the other end of the second connecting pipe;
the top of each third radiating pipe is communicated with the third hot air flow bellow;
and the bottom of each third radiating pipe is communicated with the third lower hot air bellow, and the third lower hot air bellow is communicated with the tail gas emission equipment.
Further, the combustion glow cartridge has:
the heat radiating fins are arranged on the outer surface of the combustion heating barrel;
and the two pairs of first travelling wheels are fixedly arranged at two ends of the bottom of the combustion heating tube respectively.
Further, the second stage heat exchanger has:
the two pairs of second walking wheels are fixedly arranged at two ends of the bottom of the second-stage heat exchanger respectively;
the third stage heat exchanger has:
and the two pairs of third travelling wheels are fixedly arranged at two ends of the bottom of the third-stage heat exchanger respectively.
Further, the stoving room is provided with:
the feeding door is arranged between the negative pressure air supply equipment and the drying vessel;
and the discharge door is arranged between the combustion heater and the drying utensil.
The invention has the following advantages: the heat exchanger is arranged around the combustion heating barrel in a surrounding manner, so that on one hand, the length of the original hot air heating chamber can be shortened from about 13 meters to about 4 meters, and therefore, the whole combustion heater is more compact and attractive in structure and occupies less land resources; on the other hand, the heating effect of the whole combustion heater is better, so that the consumption of fuel can be reduced, and the cost is reduced.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an environment-friendly and energy-saving drying device of the present invention.
Fig. 2 is a schematic view of the internal structure of the environment-friendly and energy-saving drying device of the present invention.
FIG. 3 is a schematic front view of a combustion heater according to the present invention.
FIG. 4 is a schematic view showing a back structure of the combustion heater of the present invention.
FIG. 5 is a cross-sectional view of a second upper hot gas flow windbox of the present invention.
Description of reference numerals:
100-drying device, 1-drying room, 11-feeding door, 12-discharging door, 2-positive pressure air supply equipment, 3-combustion heater, 31-combustion heating barrel, 311-radiating fin, 312-first traveling wheel, 32-heat exchanger, 321-first stage heat exchanger, 3211-first lower hot air flow bellow, 3212-first radiating pipe, 3213-first upper hot air flow bellow, 322-first connecting pipe, 323-second stage heat exchanger, 3231-second upper hot air flow bellow, 3232-second radiating pipe, 3233-second lower hot air flow bellow, 3234-second traveling wheel, 323 a-air flow clapboard, 323 b-front bellow, 323 c-rear hot air flow bellow, 324-second connecting pipe, 325-third stage heat exchanger, 3251-third upper hot air flow box, 3252-third radiating pipe, 3253-third lower hot air flow box, 3254-third travelling wheel, 33-burner, 34-tail gas discharging equipment, 4-drying vessel, 5-negative pressure air supply equipment, 6-air chamber, 7-air supply equipment housing and 71-pressure air port.
Detailed Description
Referring to fig. 1 to 5, the drying apparatus 100 of the present invention for environmental protection and energy saving includes:
a drying room 1, wherein the drying room 1 is mainly used for drying the articles needing to be dried, such as laver, kelp, medicinal materials and the like; in specific implementation, the length, the width and the height of the drying room 1 can be designed according to actual drying requirements;
the positive pressure air supply equipment 2 is arranged at any end in the drying room 1; the positive pressure air supply device 2 adopts a positive pressure blower, and the positive pressure air supply device 2 is mainly used for conveying air into the drying room 1; when the invention is implemented specifically, 4 positive pressure air supply devices 2 can be arranged at the end part of the drying room 1 so as to conveniently convey enough air to the drying room 1;
the combustion heater 3 is arranged in the drying room 1, the combustion heater 3 is positioned at the front end of the positive pressure air supply device 2, and air is conveyed to the combustion heater 3 through the positive pressure air supply device 2 for heat exchange to form high-temperature hot air; during specific work, the combustion heater 3 can radiate high-temperature heat energy through combustion of fuel inside, and after the positive pressure air supply device 2 conveys air in, the air can exchange heat with the combustion heater 3 to form high-temperature hot air;
a plurality of drying utensils 4, wherein each drying utensil 4 is arranged in the drying room 1, and each drying utensil 4 is positioned at the front end of the combustion heater 3; when the drying is carried out specifically, articles to be dried (such as kelp, laver, fruits, medicinal materials and the like) are required to be placed on the drying vessels 4, and because each drying vessel 4 is arranged at the front end of the combustion heater 3, after the positive pressure air supply equipment 2 conveys air to the combustion heater 3 for heat exchange, formed high-temperature hot air flows through each drying vessel 4, and in the process, the articles placed on the drying vessels 4 can be heated and dried; the drying vessels 4 can be neatly placed in the drying room 1 in multiple rows, and each drying vessel 4 can be provided with a plurality of drying layers (not shown) from bottom to top;
the negative pressure air supply device 5 is arranged at the other end in the drying room 1, high-temperature hot air is guided to flow through each drying vessel 4 through the negative pressure air supply device 5 for heating and drying, and hot air with moisture generated after heating and drying is discharged out of the drying room 1 through the negative pressure air supply device 5; the negative pressure air supply equipment 5 is a negative pressure blower, when the negative pressure air supply equipment 5 is specifically arranged, the negative pressure air supply equipment 5 can be fixedly arranged on the wall surface of the end part of the drying room 1, and 4-6 negative pressure air supply equipment 5 can be arranged on the wall surface of the end part of the drying room 1, so that hot air with moisture can be discharged better;
in the present invention, in order to provide sufficient air conveniently, the drying device 100 further includes:
and the air chamber 6 is communicated with the positive pressure air supply equipment 2, and the air chamber 6 is used for providing required air for the positive pressure air supply equipment 2.
In the present invention, the drying apparatus 100 further includes:
and the positive pressure air supply equipment 2 is fixedly arranged at the inlet end of the air supply equipment outer cover 7, and the outlet end of the air supply equipment outer cover 7 is provided with a pressure air port 71 with gradually increased diameter. When in specific design, the air supply equipment outer cover 7 can be designed into a regular quadrangular frustum pyramid structure, and the air can be better diffused to the periphery through the pressure air opening 71 with the gradually increased caliber, so that more sufficient heat exchange can be carried out on the combustion heater 3.
In the present invention, the combustion heater 3 includes:
a combustion heating tube 31 arranged in the drying room 1; the combustion heating cylinder 31 is used for generating high-temperature hot air flow and emitting high-temperature heat energy through combustion, and in specific implementation, clean energy gas such as natural gas, liquefied gas and methane can be combusted in the combustion heating cylinder 31, and liquid such as light diesel oil and methanol oil which can be purified, low in emission and high in efficiency can be combusted in the combustion heating cylinder 31. The combustion heating tube 31 is made of a high temperature resistant material (over 1100 ℃) such as 310s, so as to achieve the purpose of high temperature resistance.
In the present invention, a flame protection tube (not shown) is further disposed inside the combustion heating tube 31, and the fuels such as natural gas, liquefied gas, light diesel oil, and methanol oil can be specifically combusted in the flame protection tube, and the purpose of the flame protection tube is mainly to provide a flame protection and combustion support effect for the combustion heating tube 31. Meanwhile, an oxygen supplement port (not shown) connected to the inside of the combustion heating cylinder 31 may be further provided on the outer surface of the combustion heating cylinder 31, and the purpose of the oxygen supplement port is to: oxygen can be supplemented into the combustion heating tube 31 through the oxygen supplementing port during the combustion process so as to promote the fuel to be fully combusted.
The heat exchanger 32 is arranged in the drying room 1, the heat exchanger 32 is annularly arranged around the combustion heating cylinder 31, and the interior of the heat exchanger 32 is communicated with the airflow output end of the combustion heating cylinder 31; the heat exchanger 32 is used for realizing heat exchange, so that high-temperature hot air generated by the heat exchange is used for heating and drying high-moisture products (of course, other foods and articles) such as kelp and laver; in the invention, the heat exchanger 32 is arranged around the combustion heating barrel 31 in a surrounding manner, so that on one hand, the length of the original hot air heating chamber can be shortened from about 13 meters to about 4 meters, thereby the whole combustion heater 3 has a more compact and more beautiful structure and occupies less land resources; on the other hand, the heating effect of the whole combustion heater 3 is better, so that the fuel consumption can be reduced, and the cost is reduced. The heat exchanger 32 is also made of a high temperature resistant material (over 1100 ℃) such as 310s, so as to achieve the purpose of high temperature resistance.
The burner 33 is arranged outside the drying room 1, the burner 33 is communicated with the feeding end of the combustion heating barrel 31, and fuel and air are sprayed into the combustion heating barrel 31 through the burner 33 to be mixed and combusted; the burner 33 is a generic term for a device which makes fuel and air be sprayed and mixed in a certain way for combustion, and according to its working principle, the burner can be defined as a device which converts heat energy by a chemical reaction mode of burning a substance, i.e. air and fuel are mixed in a proper proportion by a premixing device to be fully burned, and the burner has various classification modes according to different properties, and is divided into a fuel oil burner, a gas burner, a light oil burner and a dual-fuel burner according to the fuel mode; in the specific application, the fuel oil burner is divided into a light oil burner, a heavy oil burner and the like; the gas burner is divided into a natural gas burner, an urban gas burner and the like; the burner is divided into a single-stage flame burner, a double-stage flame burner and a proportion adjusting burner according to the combustion control mode of the burner; the fuel atomizing device is divided into a mechanical atomizing burner and a medium atomizing burner according to the fuel atomizing mode; the burner is divided into an integral burner and a split burner according to the structure.
And the tail gas emission device 34 is arranged outside the drying room 1, the tail gas emission device 34 is communicated with the gas outlet end of the heat exchanger 32, and tail gas after heat exchange is emitted through the tail gas emission device 34. In specific implementation, the tail gas discharge device 34 is mainly used for discharging the tail gas subjected to heat exchange by the heat exchanger 32; meanwhile, in order to reduce the pollution of the exhaust gas, a filter (not shown) may be disposed in the exhaust gas discharge device 34 to filter the exhaust gas and discharge the filtered exhaust gas.
In the present invention, the heat exchanger 32 comprises at least:
the first-stage heat exchanger 321 is arranged at the airflow output end of the combustion heating barrel 31, and the airflow input port of the first-stage heat exchanger 321 is communicated with the airflow output end of the combustion heating barrel 31; in the using process, the high-temperature hot gas flow generated by combustion in the combustion heating barrel 31 firstly enters the first-stage heat exchanger 321 for heat exchange;
a first connecting pipe 322, wherein the airflow output port of the first-stage heat exchanger 321 is communicated with any one end of the first connecting pipe 322;
the second-stage heat exchanger 323 is arranged at any side of the combustion heating barrel 31, and an airflow input port of the second-stage heat exchanger 323 is communicated with the other end of the first connecting pipe 322; in use, high-temperature hot gas flow after heat exchange in the first-stage heat exchanger 321 enters the second-stage heat exchanger 323 through the first connecting pipe 322, and exchanges heat in the second-stage heat exchanger 323;
a second connection pipe 324, wherein the gas flow output port of the second stage heat exchanger 323 is communicated with any end of the second connection pipe 324;
and the third-stage heat exchanger 325 is arranged on the other side of the combustion heating barrel 31, an airflow input port of the third-stage heat exchanger 325 is communicated with the other end of the second connecting pipe 324, and an airflow output port of the third-stage heat exchanger 325 is communicated with the tail gas exhaust device 34. In use, the hot gas flow after heat exchange by the second stage heat exchanger 323 enters the third stage heat exchanger 325 again through the second connecting pipe 324 for heat exchange, and the final tail gas is discharged through the tail gas discharge device 34.
In the specific operation of the present invention, when a hot gas flow passes through the first stage heat exchanger 321, the first connecting pipe 322, the second stage heat exchanger 323, the second connecting pipe 324, and the third stage heat exchanger 325, the surfaces of the first stage heat exchanger 321, the first connecting pipe 322, the second stage heat exchanger 323, the second connecting pipe 324, and the third stage heat exchanger 325 all radiate high temperature heat energy to exchange heat with air fed by the positive pressure air supply device 2.
In the present invention, the first stage heat exchanger 321 includes:
a first lower hot air flow wind box 3211, the first lower hot air flow wind box 3211 is communicated with the air flow output end of the combustion heating cylinder 31;
a plurality of first heat pipes 3212, the bottom of each first heat pipe 3212 being communicated with the first lower hot air flow bellow 3211;
a first upper hot air flow bellow 3213, the top of each first radiating pipe 3212 is communicated with the first upper hot air flow bellow 3213, and the first upper hot air flow bellow 3213 is communicated with any end of the first connecting pipe 322;
in the working process of the first-stage heat exchanger 321, the high-temperature hot gas flow generated by the combustion of the combustion heating tube 31 firstly enters the first lower hot gas flow bellows 3211, and then enters the first upper hot gas flow bellows 3213 through the first heat dissipation tubes 3212.
The second-stage heat exchanger 323 includes:
a second upper hot air flow bellow 3231, the middle inside of the second upper hot air flow bellow 3231 is divided into a front hot air flow bellow 323b and a rear hot air flow bellow 323c by an air flow partition 323 a; the front hot air flow box 323b is communicated with the other end of the first connecting pipe 322, and the rear hot air flow box 323c is communicated with any one end of the second connecting pipe 324;
a plurality of second heat pipes 3232, the top of each second heat pipe 3232 is connected to the second hot air flow bellow 3231;
a second lower hot air bellows 3233, the bottom of each second heat pipe 3232 being connected to the second lower hot air bellows 3233;
during the operation of the second stage heat exchanger 323, firstly, the first connecting pipe 322 will supply the high temperature hot air in the first upper hot air flow bellow 3213 to the front hot air flow bellow 323b, and then the high temperature hot air will be supplied downwards to the second lower hot air flow bellow 3233 through the first half of each second heat pipe 3232, and then supplied upwards to the rear hot air flow bellow 323c through the second half of each second heat pipe 3232.
The third stage heat exchanger 325 includes:
a third upper hot air flow bellow 3251, said third upper hot air flow bellow 3251 is connected to the other end of said second connecting pipe 324;
a plurality of third heat pipes 3252, the top of each third heat pipe 3252 is connected to the third hot air flow bellow 3251;
a third lower hot air bellows 3253, the bottom of each third heat pipe 3252 is connected to the third lower hot air bellows 3253, and the third lower hot air bellows 3253 is connected to the tail gas discharging device 34; in practice, a drain valve (not shown) may be disposed at the bottom of the third lower hot air flow bellow 3253, and since water vapor is generated during the heat exchange process, the third lower hot air flow bellow 3253 is at the last stage of the whole heat exchanger 32, so that the water vapor is easily condensed into water and drops to the bottom of the third lower hot air flow bellow 3253; after the drain valve is arranged at the bottom of the third lower hot air flow bellow 3253, the water generated after heat exchange can be discharged.
In the working process of the third-stage heat exchanger 325, the second connecting pipe 324 conveys the hot air flow of the rear hot air flow bellow 323c to the third upper hot air flow bellow 3251, and then the hot air flow downwards enters the third lower hot air flow bellow 3253 through the third radiating pipes 3252, and finally, the waste gas generated after heat exchange is discharged through the tail gas discharging device 34.
The combustion heater drum 31 has:
a plurality of heat dissipation fins 311, each of the heat dissipation fins 311 being disposed on an outer surface of the combustion heating cylinder 31; by providing the heat dissipation fins 311 on the outer surface of the combustion heating cylinder 31, the radiation effect of high-temperature heat energy can be greatly improved.
Two pairs of first traveling wheels 312, the two pairs of first traveling wheels 312 are respectively and fixedly arranged at two ends of the bottom of the combustion heating cylinder 31, and the combustion heating cylinder 31 can be moved by the first traveling wheels 312 during use.
The second-stage heat exchanger 323 has:
two pairs of second road wheels 3234, the two pairs of second road wheels 3234 are respectively and fixedly arranged at two ends of the bottom of the second-stage heat exchanger 323, and in the using process, the second-stage heat exchanger 323 can be moved through the second road wheels 3234;
the third-stage heat exchanger 325 has:
two pairs of third traveling wheels 3254, the two pairs of third traveling wheels 3254 are respectively and fixedly arranged at two ends of the bottom of the third stage heat exchanger 325, and the third stage heat exchanger 325 can be moved by the third traveling wheels 3254 during use.
The drying room 1 is provided with:
the feeding door 11 is arranged between the negative pressure air supply equipment 5 and the drying vessel 4, and the feeding door 11 is arranged between the negative pressure air supply equipment and the drying vessel 4;
a discharge door 12, which is arranged between the combustion heater 32 and the drying vessel 4. The feeding door 11 and the discharging door 12 are mainly used for workers to walk, and dry articles to be moved in or out.
The working principle of the invention is as follows:
when the drying device 100 of the present invention is used to dry the objects to be dried (such as kelp, laver, herbs, mushrooms, tea, vegetables, flowers, fruits, wood, etc.), firstly, the objects to be dried are placed on the drying vessel 4, and the feeding door 11 and the discharging door 12 are closed; then, fuel and air are required to be sprayed into the combustion heating cylinder 31 through the burner 33 for mixed combustion, in the process of fuel combustion, high-temperature heat energy can be radiated from the combustion heating cylinder 31, meanwhile, high-temperature hot airflow formed after combustion can enter the heat exchanger 32 for heat exchange, so that the heat exchanger 32 also radiates the high-temperature heat energy, and the waste gas after heat exchange by the heat exchanger 32 can be discharged through the tail gas discharge device 34; in the process of fuel combustion, the positive pressure air supply device 2 is required to be started to convey air to the drying room 1, the air entering the drying room 1 firstly flows through the combustion heater 3, and in the process, the air exchanges heat with high-temperature heat energy radiated by the combustion heater 3 to form high-temperature hot air; under the effect of negative pressure of the negative pressure air supply equipment 5, high-temperature hot air can flow through each drying utensil 4 and heat and dry the articles to be dried on the drying utensils 4, and hot air with moisture generated in the drying process can be discharged out of the drying room 1 through the negative pressure air supply equipment 5.
The practice shows that when the drying device is used specifically, a set of drying vessels with the drying volume of 17.5 multiplied by 4.4 multiplied by 2.1 cubic meters can dry about 75 tons of green kelp shreds in 24 hours to produce about 3 tons of dry kelp shreds; about 55 tons of green laver can be dried in 24 hours, and about 3.5 tons of dry laver is produced; if the diesel oil or the environment-friendly bio-oil with the calorific value of 10500 kilocalories is used, only about 60 kilograms of diesel oil or environment-friendly bio-oil is needed per hour; if natural gas with the calorific value of 8300 kcal is used, only 84 cubes of natural gas are needed per hour, and each set of drying equipment only needs 1T 70WD burner.
If the dried shrimps with low moisture content are dried, a set of the same 17.5 multiplied by 4.4 multiplied by 2.1 cubic meter drying vessels can dry about 50 tons of dried shrimps in 24 hours; if the diesel oil or the environment-friendly bio-oil with the calorific value of 10500 kilocalories is used, only 60 kilograms of diesel oil or environment-friendly bio-oil is needed per hour; if natural gas with the calorific value of 8300 kcal is used, only 84 cubes are needed per hour, and only 1T 70WD burner is needed.
When the drying device is used for drying dried products such as low-moisture mushrooms, tea leaves and dried bamboo shoots, compared with a drying device for burning coal, the drying device for drying the dried products is equivalent to a gas (oil) and electric energy device, and energy is saved by more than 30% in the same ratio.
In summary, the invention has the following advantages: the heat exchanger is arranged around the combustion heating barrel in a surrounding manner, so that on one hand, the length of the original hot air heating chamber can be shortened from about 13 meters to about 4 meters, and therefore, the whole combustion heater is more compact and attractive in structure and occupies less land resources; on the other hand, the heating effect of the whole combustion heater is better, so that the consumption of fuel can be reduced, and the cost is reduced.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (9)
1. The utility model provides an environmental protection and energy saving drying device which characterized in that: the drying device includes:
a drying room;
the positive pressure air supply equipment is arranged at any end in the drying room;
the combustion heater is arranged in the drying room, is positioned at the front end of the positive pressure air supply equipment and conveys air to the combustion heater through the positive pressure air supply equipment for heat exchange to form high-temperature hot air;
the drying utensils are arranged in the drying room and are positioned at the front end of the combustion heater;
at least one negative pressure air supply equipment, negative pressure air supply equipment locates the other end in the stoving room, and pass through negative pressure air supply equipment guide high temperature hot-blast flow through respectively the stoving household utensils heat and dry, and pass through negative pressure air supply equipment will heat the hot-blast emission of moisture that produces after drying outside the stoving room.
2. The drying device of claim 1, which is characterized in that: the drying device further includes:
an air chamber, the air chamber with malleation air supply equipment is linked together, through the air chamber is for malleation air supply equipment provides required air.
3. The drying device of claim 1, which is characterized in that: the drying device further includes:
and the positive pressure air supply equipment is fixedly arranged at the inlet end of the air supply equipment outer cover, and the outlet end of the air supply equipment outer cover is provided with a pressure air port with gradually increased diameter.
4. The drying device of claim 1, which is characterized in that: the combustion heater includes:
the combustion heating barrel is arranged in the drying room;
the heat exchanger is arranged in the drying room, is annularly arranged around the combustion heating barrel, and the interior of the heat exchanger is communicated with the airflow output end of the combustion heating barrel;
the burner is arranged outside the drying room, is communicated with the feeding end of the combustion heating barrel, and sprays fuel and air into the combustion heating barrel through the burner to perform mixed combustion;
and the tail gas emission equipment is arranged outside the drying room, is communicated with the gas outlet end of the heat exchanger and discharges tail gas subjected to heat exchange through the tail gas emission equipment.
5. The drying device of claim 4, which is characterized in that: the heat exchanger at least comprises:
the first-stage heat exchanger is arranged at the airflow output end of the combustion heating barrel, and the airflow input port of the first-stage heat exchanger is communicated with the airflow output end of the combustion heating barrel;
the air flow output port of the first-stage heat exchanger is communicated with any one end of the first connecting pipe;
the second-stage heat exchanger is arranged on any one side of the combustion heating barrel, and an airflow input port of the second-stage heat exchanger is communicated with the other end of the first connecting pipe;
the air flow output port of the second-stage heat exchanger is communicated with any end of the second connecting pipe;
and the third-stage heat exchanger is arranged on the other side of the combustion heating barrel, an airflow input port of the third-stage heat exchanger is communicated with the other end of the second connecting pipe, and an airflow output port of the third-stage heat exchanger is communicated with the tail gas emission equipment.
6. The drying device of claim 5, which is characterized in that: the first stage heat exchanger includes:
the first lower hot air flow wind box is communicated with the air flow output end of the combustion heating barrel;
the bottom of each first radiating pipe is communicated with the first lower hot air flow box;
the top of each first radiating pipe is communicated with the first upper hot air flow box, and the first upper hot air flow box is communicated with any one end of the first connecting pipe;
the second stage heat exchanger includes:
the middle inside of the second upper hot air flow wind box is divided into a front hot air flow wind box and a rear hot air flow wind box through an air flow clapboard; the front hot air flow bellows is communicated with the other end of the first connecting pipe, and the rear hot air flow bellows is communicated with any end of the second connecting pipe;
the top of each second radiating pipe is communicated with the second hot air flow box;
the bottom of each second radiating pipe is communicated with the second lower hot air flow box;
the third stage heat exchanger includes:
the third upper hot air flow box is communicated with the other end of the second connecting pipe;
the top of each third radiating pipe is communicated with the third hot air flow bellow;
and the bottom of each third radiating pipe is communicated with the third lower hot air bellow, and the third lower hot air bellow is communicated with the tail gas emission equipment.
7. The drying device of claim 4, which is characterized in that: the combustion heating tube has:
the heat radiating fins are arranged on the outer surface of the combustion heating barrel;
and the two pairs of first travelling wheels are fixedly arranged at two ends of the bottom of the combustion heating tube respectively.
8. The drying device of claim 3, which is characterized in that: the second stage heat exchanger has:
the two pairs of second walking wheels are fixedly arranged at two ends of the bottom of the second-stage heat exchanger respectively;
the third stage heat exchanger has:
and the two pairs of third travelling wheels are fixedly arranged at two ends of the bottom of the third-stage heat exchanger respectively.
9. The drying device of claim 1, which is characterized in that: the stoving room is provided with:
the feeding door is arranged between the negative pressure air supply equipment and the drying vessel;
and the discharge door is arranged between the combustion heater and the drying utensil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910857878.XA CN110715520A (en) | 2019-09-09 | 2019-09-09 | Environment-friendly and energy-saving drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910857878.XA CN110715520A (en) | 2019-09-09 | 2019-09-09 | Environment-friendly and energy-saving drying device |
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| Publication Number | Publication Date |
|---|---|
| CN110715520A true CN110715520A (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910857878.XA Pending CN110715520A (en) | 2019-09-09 | 2019-09-09 | Environment-friendly and energy-saving drying device |
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| CN (1) | CN110715520A (en) |
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| EP1340945B1 (en) * | 2002-03-01 | 2006-10-11 | Eloma Gmbh - Innovative Koch- und Backtechnik | Device for treating and preparing foodstuffs with gas combustion heating |
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Application publication date: 20200121 |