CN107120927B - Blowing-sucking combined material drying system and control method thereof - Google Patents

Blowing-sucking combined material drying system and control method thereof Download PDF

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Publication number
CN107120927B
CN107120927B CN201710459446.4A CN201710459446A CN107120927B CN 107120927 B CN107120927 B CN 107120927B CN 201710459446 A CN201710459446 A CN 201710459446A CN 107120927 B CN107120927 B CN 107120927B
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Prior art keywords
air
blowing
suction
pipe
branch pipe
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CN107120927A (en
Inventor
董统玺
冯留建
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Zhongke Xiangdian Beijing Environmental Protection Technology Co ltd
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Zhongke Xiangdian Beijing Environmental Protection Technology Co ltd
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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
    • F26B9/103—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 using fixed or removable drying air channels placed in the stack, e.g. horizontally or vertically
    • F26B9/106—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 using fixed or removable drying air channels placed in the stack, e.g. horizontally or vertically the channels to be inserted into the stack, e.g. after its formation
    • 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
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
    • 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
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • 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
    • 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

Abstract

The invention discloses a blowing-sucking combined material drying system and a control method thereof. The blowing-sucking combined material drying system comprises: the air pipe device is provided with an air passing hole; a blowing part connected to the air duct device and blowing air to the air duct device; and the air suction part is connected to the air pipe device and sucks air to the air pipe device. According to the blowing-sucking combined material drying system, the drying efficiency of biomass can be improved, and the combustion efficiency and the thermal stability of biomass can be improved.

Description

Blowing-sucking combined material drying system and control method thereof
Technical Field
The invention relates to the technical field of biomass power generation material drying, in particular to a blowing-sucking combined material drying system and a control method thereof.
Background
Currently, energy and environmental problems have become a global focus of attention, and the problem of energy shortage is one of the major problems that have long plagued human society development. Petroleum, coal, natural gas are currently still the major sources of fuel.
With the increasing exhaustion of fossil energy and the increasing severity of environmental problems, the development and utilization of clean renewable energy has become an urgent topic. In the face of this severe form, there is an urgent need to find new alternative energy sources, seeking ways for sustainable development. Under the background, biomass energy is taken as the only renewable energy source capable of being stored and transported, the advantages of efficient conversion and clean utilization are received by general attention of various countries, and the development and utilization of biomass energy resources are urgent.
In China, industrial boilers and domestic boilers using coal as main fuel not only cause energy waste, but also cause very bad influence on environment due to the great use of the industrial boilers and domestic boilers in social production and life. According to statistics: of the pollutants discharged into the atmosphere each year in China, 80% of CO2, 79% of dust, 87% of SO2 and 69% of NOx are derived from direct combustion of coal. In order to improve the heat efficiency of the boiler and reduce the pollution emission, the structure of the industrial boiler and the matched products is improved, the condition of the raw coal for long-term combustion of the industrial boiler is changed, and the development and popularization of biomass briquette fuel are economical and effective ways. The formed biomass fuel has greatly improved combustion performance, improved utilization efficiency, convenient storage and transportation, and expanded application range, and has a heat value equivalent to that of the layer combustion furnace coal in some areas of China. The biomass fuel also has the excellent environmental protection characteristics of high volatile matters, easy combustion, less fly ash, less slag discharge, zero emission of carbon dioxide, low emission of SO2 and NOx, reduction of heavy metal pollutant emission, returning ash to fields and the like, and can be called as green energy. The biomass briquette has the advantages of sufficient source, economy and low manufacturing cost, has larger price advantage than the raw coal and the briquette with high prices at present, and is beneficial to popularization and use. Biomass energy is renewable energy, and has great strategic significance in developing and utilizing biomass energy in the day of the increasing shortage of energy.
However, due to the characteristics of large moisture, low heat value, high volatile, poor thermal stability, low ignition point and the like of biomass, the influence of the moisture content on the properties of the biomass is more remarkable, and the water content of the biomass fed into the furnace is about 45 percent generally, when the biomass is directly combusted, the combustion temperature can be reduced, the smoke discharging loss can be increased, the thermal efficiency of a boiler can be reduced, and the operation cost can be increased.
In order to solve the above problems, it is generally necessary to dry the stacked materials, so as to reduce the moisture in the materials, thereby improving the combustion heat value of the materials and the biomass power generation efficiency, but the existing drying system still has the problem of low drying efficiency.
Disclosure of Invention
The embodiment of the invention provides a blowing-sucking combined material drying system and a control method thereof, which can improve the drying efficiency of biomass and the combustion efficiency and thermal stability of biomass.
In order to achieve the above object, an embodiment of the present invention provides a blowing-sucking combined material drying system, including: the air pipe device is provided with an air passing hole; a blowing part connected to the air duct device and blowing air to the air duct device; and the air suction part is connected to the air pipe device and sucks air to the air pipe device.
Preferably, the blowing part includes: the first wind energy conversion device is used for converting natural wind into mechanical rotation energy and is provided with an output end for outputting rotation acting force; the air supply device is connected to the output end of the first wind energy conversion device and driven to rotate by the first wind energy conversion device, and an air outlet of the air supply device is connected to the air pipe device.
Preferably, the blower comprises an electric blower device, the outlet of which is connected to the air duct means.
Preferably, the suction part includes: the second wind energy conversion device is used for converting natural wind into mechanical rotation energy and is provided with an output end for outputting rotation acting force; the air suction device is connected to the output end of the second wind energy conversion device and driven to rotate by the second wind energy conversion device, and an air inlet of the air suction device is connected to the air pipe device.
Preferably, the suction portion comprises a power extraction device, the air inlet of which is connected to the duct means.
Preferably, the air duct device is an integrated structure having an air inlet and an air outlet, the blower being connected to the air inlet, and the air suction being connected to the air outlet.
Preferably, the air duct device comprises a blowing tube group and an air suction tube group which are independent of each other, the blowing part is connected to the blowing tube group, and the air suction part is connected to the air suction tube group.
Preferably, the air blowing pipe group includes an air blowing main pipe, a first air blowing branch pipe connected to the air blowing main pipe, and a terminal air blowing branch pipe connected to the first air blowing branch pipe, and the air suction pipe group includes an air suction main pipe, a first air suction branch pipe connected to the air suction main pipe, and a terminal air suction branch pipe connected to the first air suction branch pipe.
Preferably, the first air suction branch pipe is disposed in parallel with respect to the first air blowing branch pipe, and the end air suction branch pipe is disposed in parallel with respect to the end air blowing branch pipe.
Preferably, the plurality of first air blowing branch pipes and the plurality of first air suction branch pipes are alternately arranged along the horizontal direction, the tail end air blowing branch pipes positioned on the same first air blowing branch pipe are arranged in a row, the tail end air suction branch pipes positioned on the same first air suction branch pipe are arranged in a row, and the tail end air blowing branch pipes and the tail end air suction branch pipes are alternately arranged along the arrangement direction of the first air blowing branch pipes by taking the row as a unit.
Preferably, the first air blowing branch pipe is located right above the first air suction branch pipe, the first air blowing branch pipe and the first air suction branch pipe are arranged in a one-to-one correspondence manner, the tail end air blowing branch pipe and the tail end air suction branch pipe extend downwards, the position of the first air suction branch pipe corresponding to the tail end air suction branch pipe is provided with a bent pipe section for avoiding the tail end air suction branch pipe, and the tail end air blowing branch pipe and the tail end air suction branch pipe are alternately arranged along the extending direction of the first air blowing branch pipe and the arrangement direction of the first air blowing branch pipe.
Preferably, the first air blowing branch pipes and the first air suction branch pipes are arranged in a vertically staggered mode, the first air blowing branch pipes are arranged along a first direction, and the first air suction branch pipes are arranged along a second direction perpendicular to the first direction.
Preferably, the end air blowing branch pipes and the end air suction branch pipes are alternately arranged along the extending direction of the first air blowing branch pipes or the end air blowing branch pipes and the end air suction branch pipes are alternately arranged along the arranging direction of the first air blowing branch pipes.
Preferably, the first air blowing branch pipe and the first air suction branch pipe are arranged in a vertically staggered mode, and the extending direction of the first air blowing branch pipe and the extending direction of the first air suction branch pipe form an acute angle.
Preferably, the end air blowing branch pipes and the end air suction branch pipes are alternately arranged along the extending direction of the first air blowing branch pipes and the arrangement direction of the first air blowing branch pipes.
Preferably, the first air outlet hole is arranged on the first air blowing branch pipe, and the first air suction hole is arranged on the first air suction branch pipe; and/or the tail end air blowing branch pipe is provided with a second air outlet, and the tail end air suction branch pipe is provided with a second air suction hole.
Preferably, the pipe diameter of the first blowing branch pipe is smaller than that of the blowing main pipe, and the pipe diameter of the tail end blowing branch pipe is smaller than that of the first blowing branch pipe; and/or the pipe diameter of the first air suction branch pipe is smaller than the pipe diameter of the air suction main pipe, and the pipe diameter of the tail end air suction branch pipe is smaller than the pipe diameter of the first air suction branch pipe.
Preferably, the pipe diameter area of the blowing main pipe is 5% to 10% greater than the sum of the pipe diameter areas of the first blowing branch pipes; and/or the pipe diameter area of the air suction main pipe is 5% to 10% larger than the sum of the pipe diameter areas of the first air suction branch pipes.
Preferably, the plurality of first gas outlet holes gradually increase in aperture along the gas flow direction; and/or the aperture of the plurality of second air outlet holes is gradually increased along the gas flowing direction; and/or the first plurality of suction holes gradually decrease in diameter along the gas flow direction; and/or the plurality of second suction holes gradually decrease in aperture along the gas flow direction.
Preferably, the first plurality of gas outlet holes are tapered in hole pitch along the gas flow direction; and/or, the hole spacing of the plurality of second air outlet holes is gradually reduced along the gas flow direction; and/or, the first plurality of suction holes are gradually increased in hole pitch along the gas flow direction; and/or the hole pitch of the plurality of second suction holes is gradually increased along the gas flow direction.
Preferably, the first air blowing branch pipe is divided into a plurality of air outlet areas along the length direction, the apertures of the first air outlet holes in the same air outlet area are the same, and the apertures of the first air outlet holes in each air outlet area are gradually increased along the air flow direction; and/or the tail end air blowing branch pipe is divided into a plurality of air outlet areas along the length direction, the apertures of the second air outlet holes in the same air outlet area are the same, and the apertures of the second air outlet holes in each air outlet area are gradually increased along the air flow direction.
Preferably, the inlet of at least one first blowing branch pipe is provided with a control valve; and/or the outlet of at least one first air suction branch pipe is provided with a control valve.
Preferably, the air blowing main pipe is vertically arranged, a plurality of first air blowing branch pipes are arranged at intervals along the vertical direction, and each first air blowing branch pipe extends along the horizontal direction; the main suction pipe is vertically arranged, a plurality of first suction branch pipes are arranged at intervals along the vertical direction, and each first suction branch pipe extends along the horizontal direction.
Preferably, the end blowing branch pipe is rotatably provided around its own central axis; and/or the tail end air suction branch pipe is rotatably arranged around the central rotating shaft of the tail end air suction branch pipe.
Preferably, the inner periphery and/or the outer periphery of the first air blowing branch pipe are/is provided with a material blocking net for preventing materials from entering the first air blowing branch pipe from the first air outlet hole; and/or the inner periphery and/or the outer periphery of the tail end air blowing branch pipe are/is provided with a material blocking net for preventing materials from entering the tail end air blowing branch pipe from the second air outlet hole; and/or the inner periphery and/or the outer periphery of the first air suction branch pipe are/is provided with a material blocking net for preventing materials from entering the first air suction branch pipe from the first air suction hole; and/or the inner circumference and/or the outer circumference of the tail end air suction branch pipe are/is provided with a material blocking net for preventing materials from entering the tail end air suction branch pipe from the second air suction hole.
Preferably, the first wind energy conversion device comprises a first wind blade, the air supply device comprises a blower fan, and the first wind blade is connected to the blower fan in a transmission way and drives the blower fan to rotate.
Preferably, the first wind blade is connected with the blower fan through a first gearbox, and the first gearbox is used for increasing the rotating speed of the blower fan.
Preferably, the rotating shaft of the first wind blade is vertically arranged, and the rotating shaft of the blower fan is vertically arranged; or the rotating shaft of the first wind blade is horizontally arranged, and the rotating shaft of the blower fan is horizontally arranged; or the rotating shaft of the first wind blade is vertically arranged, and the rotating shaft of the blower fan is horizontally arranged; or the rotating shaft of the first wind blade is horizontally arranged, and the rotating shaft of the blower fan is vertically arranged.
Preferably, at least part of the air duct means is horizontally adjustable in position.
According to another aspect of the present invention, there is provided a control method of a blow-suction combined material drying system, including: controlling the blowing part to blow air to the air pipe device to dry the materials; stopping the blowing part after the blowing part runs for T1, starting the air suction part to suck air to the air pipe device, drying materials, and switching to a step of controlling the blowing part to blow air to the air pipe device after the blowing part runs for T2; repeating the steps, and alternately blowing, sucking and drying the materials.
By applying the technical scheme of the invention, the blowing-sucking combined material drying system comprises: the air pipe device is provided with an air passing hole; a blowing part connected to the air duct device and blowing air to the air duct device; and the air suction part is connected to the air pipe device and sucks air to the air pipe device. When drying the material, can alternate to the material drying of blowing with induced draft, utilize the high pressure effect of blowing to make the air current can arrive each part in the material more fully, carry out more abundant contact heat transfer with the material, improve the heat exchange efficiency of air and material, utilize the negative pressure effect of induced drafting, reduce the pressure on material surface, thereby increase the inside pressure differential with the material surface of material, make the inside moisture of material can ooze the surface of material and air contact and be taken away by the air, make the material can be by the more thoroughly of drying, drying efficiency is higher, thereby can improve living beings combustion efficiency and thermal stability more effectively.
Drawings
FIG. 1 is a schematic view of a combined blowing and sucking material drying system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a first blowing structure of a blowing-suction combined material drying system according to an embodiment of the present invention;
FIG. 3 is a schematic view of a first suction structure of a combined blowing and suction material drying system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a second blowing structure of a blowing-suction combined material drying system according to an embodiment of the present invention;
FIG. 5 is a schematic view of a second suction structure of a combined blowing and suction material drying system according to an embodiment of the present invention;
FIG. 6 is a schematic view of a first piping structure of a blow-suction combined material drying system according to an embodiment of the present invention;
FIG. 7 is a schematic view of a second piping structure of a blow-suction combined material drying system according to an embodiment of the present invention;
FIG. 8 is a schematic bottom view of a second piping structure of a blow-suction combined material drying system according to an embodiment of the present invention;
FIG. 9 is a schematic view of the structure of the end air-blowing branch pipe of the air-sucking combined material drying system according to the embodiment of the invention;
fig. 10 is a schematic perspective view of a tail end air-blowing branch pipe of a blowing-sucking combined material drying system according to an embodiment of the present invention;
FIG. 11 is a schematic view of a third piping structure of a suction combined material drying system according to an embodiment of the present invention;
fig. 12 is a flowchart of a control method of a blowing-sucking combined material drying system according to an embodiment of the present invention.
Reference numerals illustrate: 1. a first wind energy conversion device; 2. a second wind energy conversion device; 3. an air supply device; 4. an electric blower device; 5. an air suction device; 6. a power extraction device; 7. a blowing pipe group; 8. a suction tube group; 9. a blowing main pipe; 10. a first air-blowing branch pipe; 11. a tail end blowing branch pipe; 12. a suction header pipe; 13. a first suction manifold; 14. a tail end air suction branch pipe; 15. a curved pipe section; 16. a first air outlet hole; 17. a first suction hole; 18. a second air outlet hole; 19. a second suction hole; 20. a control valve; 21. a first wind blade; 22. a blower fan; 23. a first gearbox; 24. a second wind blade; 25. a second gearbox.
Detailed Description
The invention will now be described in further detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.
Referring to fig. 1 to 11 in combination, a blow-suction combined material drying system according to an embodiment of the present invention includes: the air pipe device is provided with an air passing hole; a blowing part connected to the air duct device and blowing air to the air duct device; and the air suction part is connected to the air pipe device and sucks air to the air pipe device. The air passing hole on the air pipe device can be used for blowing air and also can be used for sucking air, and the air passing hole is determined according to the structure of the air pipe device and the action of the air passing hole.
When drying the material, can alternate to the material drying of blowing with induced draft, utilize the high pressure effect of blowing to make the air current can arrive each part in the material more fully, carry out more abundant contact heat transfer with the material, improve the heat exchange efficiency of air and material, utilize the negative pressure effect of induced drafting, reduce the pressure on material surface, thereby increase the inside pressure differential with the material surface of material, make the inside moisture of material can ooze the surface of material and air contact and be taken away by the air, make the material can be by the more thoroughly of drying, drying efficiency is higher, thereby can improve living beings combustion efficiency and thermal stability more effectively.
For materials, a part of an air pipe device of the drying system is used for blowing, a part of the air pipe device of the drying system is used for sucking and discharging, a plurality of micro-channels can be formed in the materials, hot air enters from the air blowing pipe, and after moisture in the materials is absorbed, the hot air is discharged through the air sucking holes, so that the materials are prevented from being condensed again in the materials, and the drying process of the materials is accelerated.
Referring to fig. 2 in combination, a schematic diagram of a first blowing structure according to the present invention is shown, in which a blowing part includes: the first wind energy conversion device 1 is used for converting natural wind into mechanical rotation energy and is provided with an output end for outputting rotation acting force; and the air supply device 3 is connected to the output end of the first wind energy conversion device 1 and is driven to rotate by the first wind energy conversion device 1, and an air outlet of the air supply device 3 is connected to the air pipe device. The air blowing device is, for example, a turbo fan or an axial flow fan.
The drying system adopting the blowing part directly converts wind energy into mechanical rotation energy in the whole material blowing and drying process, then converts air into air energy with certain pressure through mechanical rotation acting force, and the material is dried through blowing the air, so that the whole drying process does not consume any electric power, only natural wind energy is utilized, the energy consumption is low, the environment is protected, and the material can be effectively dried.
Referring to fig. 4 in combination, a schematic view of a second blowing structure of the present invention is shown, where a blowing part of the blowing structure includes an electric blower device 4, and an air outlet of the electric blower device 4 is connected to an air duct device. The electric blower device 4 is, for example, a turbo fan or an axial flow fan.
The electric power blower device 4 can assist the drying system in supplying air when the natural wind energy is insufficient, so that sufficient air is ensured to enter the materials for drying, and the drying efficiency of the materials is ensured. The electric power blast equipment 4 can be matched with the first wind energy conversion device 1 for use, can flexibly select the air supply mode of the auxiliary power type air distribution pipe drying system, can meet the requirements of energy consumption and air supply quantity, flexibly allocate energy supply, improve the energy utilization rate, improve the material drying efficiency and the drying effect, thereby reducing microbial activity and reducing the consumption of carbon sources. When the electric power blast equipment 4 is matched with the first wind energy conversion device 1 for use, the air valves are arranged on the pipelines of the electric power blast equipment 4 and the air supply device 3 connected to the air pipe device, and when the air speed of the electric power blast equipment 4 is larger than the air speed in the air supply device 3 after the electric power blast equipment 4 runs, and when the phenomenon that air flows backwards to the first wind energy conversion device 1 occurs, the air valves 11 disconnect the ventilation pipeline between the air supply device and the air pipe device, so that air supply of the electric power blast equipment 4 is prevented from leaking out from the first wind energy conversion device 1, and the air supply efficiency is improved. The air vent pipeline between the electric power blower 4 and the air pipe device can be provided with the air reversing valve 11, so that the air speed of the electric power blower 4 is smaller than the air speed in the air supply device 3, the air is prevented from flowing backwards to the electric power blower 4, and the air supply efficiency is improved.
The electric blower device 4 can also be independently matched with the air suction part to alternately dry the materials by blowing and sucking.
Referring to fig. 3 in combination, which is a schematic diagram of a first air suction structure of the present invention, the air suction portion includes: the second wind energy conversion device 2 is used for converting natural wind into mechanical rotation energy and is provided with an output end for outputting rotation acting force; the air suction device 5 is connected to the output end of the second wind energy conversion device 2 and is driven to rotate by the second wind energy conversion device 2, and an air inlet of the air suction device 5 is connected to the air pipe device. The air suction device 5 is, for example, a turbo fan or an axial flow fan, and is different from the air supply device 3 in that an air inlet of the turbo fan or the axial flow fan is connected to the air duct device, and an air outlet is oriented to the air side.
The drying system adopting the suction part directly converts wind energy into mechanical rotation energy in the whole material drying process, and then sucks out air from the material through mechanical rotation acting force, so that negative pressure is formed in the material, external air flows into the material under the action of the negative pressure, and meanwhile, the moisture in the material permeates to the surface of the material under the action of the negative pressure, so that the air can more conveniently take away the moisture on the surface of the material in the flowing process, the material drying is realized, no electric power is consumed in the whole drying process, only natural wind energy is utilized, the energy consumption is less, the environment is protected, the energy is saved, and the material can be effectively dried.
The suction part comprises an electric power air draft device 6, and an air inlet of the electric power air draft device 6 is connected to the air pipe device. The electric air draft device is, for example, a turbine fan or an axial flow fan, wherein an air inlet of the turbine fan or the axial flow fan is connected to the air pipe device, and an air outlet faces to the external environment, so that moist air sucked from the interior of the material can be discharged to the external environment to dry the interior of the material. In addition, when the electric power air draft equipment 6 is matched with the second wind energy conversion device 2 and the air draft device 5 for use, the auxiliary air draft device can provide auxiliary air draft for the air pipe device when the natural wind energy is insufficient, so that enough negative pressure is generated in the air pipe device, air in materials is sucked, and the drying effect on the materials is guaranteed.
In one embodiment, the duct device is an integrated structure having an air inlet and an air outlet, the blower is connected to the air inlet, and the air suction is connected to the air outlet. Under the condition, the air blowing part can be of a first structure or a second structure, the air suction part can also be of the first structure or the second structure, and various structures can be mixed for use, but when the air blowing part works, the air blowing part can be firstly controlled to operate, so that the air suction part does not work, meanwhile, a control valve is arranged at the connection position of the air suction part and the air pipe device, the air blowing of the air blowing part is prevented from leaking from the air suction part, and the air blowing effect is improved. After the portion of blowing work a period, carry out sufficient blowing to material inner space for the material is inside fully to exchange heat with the air after, can stop the portion of blowing work, start the portion of sucking air work simultaneously, also be provided with the control valve between portion of blowing and tuber pipe device this moment, from portion of blowing air leakage when preventing the portion of sucking air exhaust, thereby guarantee that the material is inside can form enough negative pressure, can make the material in moisture more fully permeate out, and in the portion of sucking air sucking suction material together with the air, improve the inside drying effect of material.
In this embodiment, the air duct apparatus includes a blower tube group 7 and an air suction tube group 8 that are independent of each other, a blower portion is connected to the blower tube group 7, and an air suction portion is connected to the air suction tube group 8. The air blowing pipe group 7 is matched with the air blowing part to realize blowing drying in the material, the air suction pipe group 8 is matched with the air suction part to realize negative pressure air suction drying in the material, the structures between the air suction pipe group and the air suction drying are mutually independent, the air flow paths are also mutually noninterfere, the control is easier, and the material drying effect can be effectively improved.
Preferably, in the present embodiment, the air-blowing tube group 7 includes an air-blowing main 9, a first air-blowing branch pipe 10 connected to the air-blowing main 9, and a terminal air-blowing branch pipe 11 connected to the first air-blowing branch pipe 10, and the air-blowing tube group 8 includes an air-blowing main 12, a first air-blowing branch pipe 13 connected to the air-blowing main 12, and a terminal air-blowing branch pipe 14 connected to the first air-blowing branch pipe 13.
When drying the material, drying system can stretch into inside the material through blowing house steward 9 and first blast branch pipe 10, send into the material with outside air inside, thereby make the air can be from inside and the material contact, make there is more abundant contact between material and the air, can make the air take away the moisture in the material more conveniently fast in flowing process, dry the material, realize effectively penetrating's blowing, also can take away the material fast through entering the air in the material simultaneously and pile up the inside high temperature that produces, avoid the material spontaneous combustion, improve the material drying efficiency, and improve the security that the material was deposited.
The drying system can also extend into the interior of the material through the air suction main pipe 12 and the first air suction branch pipe 13, and the wet air in the interior of the material is pumped out to the external environment, so that negative pressure is formed in the interior of the material, the water precipitation in the interior of the material is facilitated, the material can be purged and pumped and dried alternately, the water in the interior of the material can be removed more effectively, and the drying effect of the material is improved.
Preferably, the first air-blowing branch pipes 10 are connected in parallel on the air-blowing main pipe 9, so that air can be quickly and evenly distributed to each first air-blowing branch pipe 10 after entering the air-blowing main pipe 9, and accordingly the air can quickly reach all positions inside the material through the first air-blowing branch pipes 10, heat dissipation and drying can be carried out on all positions inside the material, and drying efficiency is improved. Of course, it is also possible to use only one first blow branch 10 for feeding the air conveyed by the blow manifold 9 into the interior of the material.
Preferably, the first air blowing branch pipes 10 are radially connected to the air blowing main pipe 9, and each first air blowing branch pipe 10 is further provided with a terminal air blowing branch pipe 11, and the terminal air blowing branch pipe 11 is provided with a second air outlet hole 18. In general, after the air enters the air blowing manifold 9, the air can be distributed through the first air blowing branch pipes 10 only along the path where the first air blowing branch pipes 10 are located, and the air distribution is limited by the quantity and arrangement mode of the first air blowing branch pipes 10, when the material area is large, the air supply of the first air blowing branch pipes 10 in partial areas cannot be achieved, the drying and heat dissipation of the material are affected by the air, so that the air distribution needs to be continued on the first air blowing branch pipes 10, the air flow range is enlarged, the air can reach all areas in the material more fully, the air can be in contact with the material more fully, the drying efficiency of the material is improved, and the microbial carbon consumption is reduced. The end branch pipe 11 of blowing can extend along the direction different with the extending direction of the branch pipe 10 of blowing to in the place that the branch pipe 10 of blowing is difficult to reach first, also can blow through the branch pipe 11 of blowing of end, enlarge the air supply scope and the air supply distance of distributing pipe wind distribution device, the inside whole regional air supply of realization material of being convenient for more, thereby conveniently discharge the moisture, realize drying, can reduce the microorganism activity simultaneously, reduce the carbon source consumption, promote the calorific value when the material burns from two aspects.
The arrangement and function of the suction manifold 12, the first suction branch 13 and the end suction branch 14 are substantially the same as those of the blower, and will not be described in detail here.
Preferably, the first suction manifold 13 is disposed in parallel with respect to the first blowing manifold 10, and the end suction manifold 14 is disposed in parallel with respect to the end blowing manifold 11. Because the first air suction branch pipe 13 corresponds to the first air blowing branch pipe 10, the tail end air suction branch pipe 14 corresponds to the tail end air blowing branch pipe 11, so that the blowing and sucking of the air in the material form good circulation, the air is more effectively contacted with the material fully, the moisture in the material is more effectively separated out, the drying efficiency is improved, the microbial activity is reduced, the carbon source consumption is reduced, and the heat value of the material during combustion is improved from two aspects.
Referring to fig. 7 and 8 in combination, in the present embodiment, a plurality of first air-blowing branch pipes 10 and a plurality of first air-suction branch pipes 13 are alternately arranged in the horizontal direction, the end air-blowing branch pipes 11 located on the same first air-blowing branch pipe 10 are in a row, the end air-suction branch pipes 14 located on the same first air-suction branch pipe 13 are in a row, and the end air-blowing branch pipes 11 and the end air-suction branch pipes 14 are alternately arranged in the arrangement direction of the first air-blowing branch pipes 10 in units of rows.
In this embodiment, the tail end air blowing branch pipes 11 and the tail end air suction branch pipes 14 are distributed in rows, and each row of tail end air blowing branch pipes 11 is provided with two rows of tail end air suction branch pipes 14 on the periphery, so that hot air blown out from the tail end air blowing branch pipes 11 is ensured, and after moisture in biomass is absorbed, moisture in the material can be timely discharged through the tail end air suction branch pipes 14, so that the drying process is accelerated.
Referring to fig. 6, in this embodiment, the first air-blowing branch pipe 10 is located directly above the first air-suction branch pipe 13, and the first air-blowing branch pipe 10 and the first air-suction branch pipe 13 are disposed in a one-to-one correspondence, the end air-blowing branch pipe 11 and the end air-suction branch pipe 14 extend downward, the position of the first air-suction branch pipe 13 corresponding to the end air-suction branch pipe 14 is provided with a bend section 15 avoiding the end air-suction branch pipe 14, and the end air-blowing branch pipe 11 and the end air-suction branch pipe 14 are alternately disposed along the extending direction of the first air-blowing branch pipe 10 and the arrangement direction of the first air-blowing branch pipe 10.
In this embodiment, four end air suction branch pipes 14 are arranged around each end air suction branch pipe 11, four end air suction branch pipes 11 are arranged around each end air suction branch pipe 14, and a plurality of air passing holes are formed in each end air suction branch pipe 11 and each end air suction branch pipe 14, so that local gas microcirculation can be ensured to be formed, and the whole drying process of materials is accelerated. Of course, depending on the difference in the structures of the first air-blowing branch pipes 10 and the first air-suction branch pipes 13, and the difference in the structures of the end air-blowing branch pipes 11 on the first air-blowing branch pipes 10 and the difference in the structures of the end air-suction branch pipes 14 on the first air-suction branch pipes 13, the number of the end air-suction branch pipes 14 on the circumferential side of each end air-blowing branch pipe 11 may be other, and the number of the end air-blowing branch pipes 11 on the circumferential side of each end air-suction branch pipe 14 may be other, so long as it is ensured that the end air-blowing branch pipes 11 and the end air-suction branch pipes 14 are alternately arranged along the extending direction of the first air-blowing branch pipes 10 and the arrangement direction of the first air-blowing branch pipes 10, so that the overall drying efficiency of the material is higher.
In another embodiment, the first air blowing branch pipes 10 and the first air suction branch pipes 13 are arranged vertically in a staggered manner, the first air blowing branch pipes 10 are arranged along a first direction, and the first air suction branch pipes 13 are arranged along a second direction perpendicular to the first direction. In this embodiment, the first air blowing branch pipes 10 and the first air suction branch pipes 13 are vertically crossed after being staggered up and down, and the arrangement manner of the end air blowing branch pipes 11 located on the first air blowing branch pipes 10 and the end air suction branch pipes 14 located on the first air suction branch pipes 13 may also be selected according to the needs, for example, the end air blowing branch pipes 11 and the end air suction branch pipes 14 are alternately arranged along the extending direction of the first air blowing branch pipes 10 or the end air blowing branch pipes 11 and the end air suction branch pipes 14 are alternately arranged along the arrangement direction of the first air blowing branch pipes 10, or the end air blowing branch pipes 11 and the end air suction branch pipes 14 are alternately arranged in rows, etc.
In another embodiment, the first air-blowing branch pipe 10 and the first air-suction branch pipe 13 are arranged in a vertically staggered manner, and the extending direction of the first air-blowing branch pipe 10 forms an acute angle with the extending direction of the first air-suction branch pipe 13. The end air-blowing branch pipes 11 and the end air-suction branch pipes 14 are alternately arranged along the extending direction of the first air-blowing branch pipes 10 and the arrangement direction of the first air-blowing branch pipes 10. In this embodiment, the first air blowing branch pipe 10 and the first air suction branch pipe 13 are staggered up and down and then are arranged in a crossing manner, so that various arrangement modes of the tail end air blowing branch pipe 11 and the tail end air suction branch pipe 14 can be realized, and the realization structure is simpler and more convenient.
Preferably, the first air outlet hole 16 is arranged on the first air blowing branch pipe 10, and the first air suction hole 17 is arranged on the first air suction branch pipe 13; and/or, the end air blowing branch pipe 11 is provided with a second air outlet hole 18, and the end air suction branch pipe 14 is provided with a second air suction hole 19. The first air outlet hole 16 of the first air blast branch pipe 10 may be connected only with the end air blast branch pipe 11, or may be connected with the end air blast branch pipe 11 and simultaneously supply air to the area through which the first air blast branch pipe 10 passes. Because the first air outlet holes 16 are distributed at the periphery of the first air blowing branch pipe 10, air can be blown along the circumferential direction of the first air blowing branch pipe 10, and meanwhile, the first air outlet holes 16 also extend along the axial direction of the first air blowing branch pipe 10, so that the first air outlet holes 16 extend over the whole surface of the first air blowing branch pipe 10, larger-area air outlet is formed, and the air distribution range of the air distribution device is further improved. The second air outlet 18 is arranged in a similar manner on the end air-blowing branch pipe 11, and the effect is similar. Of course, the second air outlet holes 18 may be disposed in other manners on the end air outlet branch pipe 11, for example, not along the periphery Xiang Buzhi only in the axial direction, etc.
The opening areas of the first air outlet hole 16, the first air suction hole 17, the second air outlet hole 18 and the second air suction hole 19 are gradually increased along the direction from inside to outside, and after the air outlet holes are arranged in the structure, the air outlet areas of the air outlet holes can be increased for the first air outlet branch pipe 10 and the tail end air outlet branch pipe 11, so that the dry air can have a larger distribution area, and the materials can be dried more comprehensively; similarly, after the air suction holes are arranged in the structure, a diversion structure can be formed through the outward-expanding air suction holes, so that air in the material is more conveniently sucked into the tail end air suction branch pipe 14 and the first air suction branch pipe 13, and then the material is discharged through the air suction main pipe 12, so that the suction drying of the material is realized.
Preferably, the pipe diameter of the first blowing branch pipe 10 is smaller than that of the blowing main pipe 9, and the pipe diameter of the tail end blowing branch pipe 11 is smaller than that of the first blowing branch pipe 10; and/or the pipe diameter of the first air suction branch pipe 13 is smaller than the pipe diameter of the air suction main pipe 12, and the pipe diameter of the tail end air suction branch pipe 14 is smaller than the pipe diameter of the first air suction branch pipe 13.
Since the number of the first blowing branch pipes 10 is greater than the number of the blowing main pipes 9, the number of the end blowing branch pipes 11 is greater than the number of the first blowing branch pipes 10, so that in order to ensure that air still has enough wind pressure and wind speed after being distributed to each branch pipe, materials can be dried more effectively, when the air needs to be ensured to enter the first blowing branch pipes 10 from the blowing main pipes 9, the wind pressure is not greatly reduced, the pipe diameter of the first blowing branch pipes 10 is set to be smaller than the pipe diameter of the blowing main pipes 9, and the pipe diameter of the end blowing branch pipes 11 is set to be smaller than the pipe diameter of the first blowing branch pipes 10, so that the purpose can be conveniently achieved. Preferably, the total cross-sectional area of all the first blowing branch pipes 10 is equal to the total cross-sectional area of the blowing main pipe 9, and the total cross-sectional area of all the end blowing branch pipes 11 is equal to the total cross-sectional area of the first blowing branch pipes 10, so that the wind pressure and the wind speed of air do not excessively fluctuate in the distribution process, the flow efficiency of the air is improved, and the uniformity of air distribution and the stability of the flow velocity are improved.
Similarly, since the number of the first suction branch pipes 13 is greater than the number of the suction main pipes 12, the number of the end suction branch pipes 14 is greater than the number of the first suction branch pipes 13, so that in order to ensure that air is distributed to each branch pipe and still has enough wind pressure and wind speed, the material can be dried more effectively, the wind pressure is not greatly reduced when the air enters the first suction branch pipes 13 from the suction main pipes 12, the pipe diameter of the first suction branch pipes 13 is set to be smaller than the pipe diameter of the suction main pipes 12, and the pipe diameter of the end suction branch pipes 14 is set to be smaller than the pipe diameter of the first suction branch pipes 13, so that the purpose can be conveniently achieved. Preferably, the total cross-sectional area of all the first air suction branch pipes 13 is equal to the total cross-sectional area of the air suction main pipe 12, and the total cross-sectional area of all the tail end air suction branch pipes 14 is equal to the total cross-sectional area of the first air suction branch pipes 13, so that the wind pressure and the wind speed of air do not excessively fluctuate in the distribution process, the flow efficiency of the air is improved, and the uniformity of air distribution and the stability of the flow velocity are improved.
In a further embodiment, it is preferred that the pipe diameter area of the blowing header pipe 9 is 5% to 10% larger than the sum of the pipe diameter areas of the first blowing branch pipes 10; and/or the pipe diameter area of the suction manifold 12 is 5% to 10% greater than the sum of the pipe diameter areas of the first suction branch pipes 13. Because the air can generate flow capacity loss in the flowing process, if the pipe diameter area of the air blowing main pipe is smaller than or equal to the sum of the pipe diameter areas of the first air blowing branch pipes 10, the air pressure at the tail end air blowing branch pipes 11 is insufficient, the air blowing distance is reduced, and the drying efficiency of air and materials is reduced, so that the pipe diameter area of the air blowing main pipe 9 is 5% to 10% greater than the sum of the pipe diameter areas of the first air blowing branch pipes 10, the air entering the first air blowing branch pipes 10 through the air blowing main pipe 9 can be ensured, and even if partial air pressure loss exists, the air can still be ensured to have enough air pressure, can more fully reach all parts in the materials, and can be more fully dried and heat exchanged with the materials. The principle is similar for the suction tube group.
Preferably, the plurality of first gas outlet holes 16 gradually increase in aperture along the gas flow direction; and/or the plurality of second gas outlet holes 18 gradually increases in aperture along the gas flow direction; and/or the plurality of first suction holes 17 gradually decrease in aperture along the gas flow direction; and/or the plurality of second suction holes 19 gradually decrease in aperture along the gas flow direction. When the air conditioner operates generally, the air pressure at the position close to the air blowing part or the air suction part is larger, and the air pressure at the position far away from the air blowing part or the air suction part is smaller, so that the air outlet holes on each air blowing pipe are gradually increased along the air flow direction, the air outlet quantity of each air dividing pipe at each position along the length direction of the air dividing pipe can be ensured to be basically consistent, and the air suction holes on the air suction pipes are gradually reduced along the air flow direction, so that the air suction quantity of each air suction pipe at each position along the length direction of the air dividing pipe is ensured to be basically consistent, and the uniformity of drying of materials is more effectively ensured.
Preferably, the plurality of first gas outlet holes 16 are tapered in hole pitch along the gas flow direction; and/or the plurality of second gas outlet holes 18 are progressively smaller in hole pitch along the gas flow direction; and/or, the plurality of first suction holes 17 are gradually increased in hole pitch along the gas flow direction; and/or the plurality of second suction holes 19 are gradually increased in hole pitch along the gas flow direction. Under the condition that the apertures of the first air outlet holes 16 are consistent, the hole spacing is gradually reduced, so that the hole density is gradually increased along the air flow direction, and the air outlet quantity on the whole first air outlet branch pipe 10 can still be basically kept consistent under the condition that the air pressure is gradually reduced, and the uniformity of drying materials is ensured. Similarly, in the case that the apertures of the second air outlet holes 18 are consistent, the hole pitch is gradually reduced, so that the hole density is gradually increased along the air flow direction, and the air outlet volume on the whole tail end air outlet branch pipe 11 can be basically kept consistent under the condition that the air pressure is gradually reduced, so as to ensure the uniformity of drying the materials.
The first air-blowing branch pipe 10 is divided into a plurality of air-out areas along the length direction, the apertures of the first air-out holes 16 positioned in the same air-out area are the same, and the apertures of the first air-out holes 16 in each air-out area are gradually increased along the air flow direction; and/or, the tail end blowing branch pipe 11 is divided into a plurality of air outlet areas along the length direction, the apertures of the second air outlet holes 18 positioned in the same air outlet area are the same, and the apertures of the second air outlet holes 18 in each air outlet area are gradually increased along the air flow direction. Because the air outlet area of each air outlet area is matched with the position of the air outlet area, the air outlet quantity of each air outlet area can be ensured to be basically consistent, and the uniformity of material drying can be effectively ensured. Similarly, the first suction branch pipe 13 may be divided into a plurality of suction areas along the length direction, the pipe diameters of the first suction holes 17 located in the same suction area are the same, and the pipe diameters of the first suction holes 17 in each suction area are gradually reduced along the air flow direction. The end suction branch pipe 14 may be divided into a plurality of suction areas along the length direction, and the second suction holes 19 located in the same suction area have the same pipe diameter, and the pipe diameters of the second suction holes 19 in the respective suction areas gradually decrease along the air flow direction.
At the inlet of at least one first blow branch pipe 10, a control valve 20 is provided; and/or at the outlet of at least one of the first suction manifold 13 is provided with a control valve 20.
For the material, because the stacking structures and the like of all the parts are not the same, the humidity and the temperature of all the positions inside the material cannot be guaranteed to be uniformly distributed, and the air quantity is required to be regulated according to the actual temperature and the humidity inside the material, so that the temperature control inside the material is more accurate, and the humidity regulation efficiency is higher. Through opening size or switch of control valve 20, just can the effective control this control valve 20 place first blast branch pipe 10 on the amount of wind size to can have more to get into the amount of wind of each first blast branch pipe 10 and adjust, make the air distribution of air distribution device more reasonable, thereby guarantee that the material drying effect is better, the radiating effect is better.
The air blowing main pipe 9 is vertically arranged, a plurality of first air blowing branch pipes 10 are arranged at intervals along the vertical direction, and each first air blowing branch pipe 10 extends along the horizontal direction; the air suction main pipe 12 is vertically arranged, a plurality of first air suction branch pipes 13 are arranged at intervals along the vertical direction, and each first air suction branch pipe 13 extends along the horizontal direction; thereby layering is carried out the air supply or is induced draft to the material along the thickness direction of material for each layer of material all can carry out the heat transfer with the air, improves the drying efficiency of material.
The end blowing branch pipe 11 is rotatably provided around its own central axis; and/or the end suction manifold 14 is rotatably disposed about its own center axis of rotation. Because there is certain interval between each end branch pipe of drying 11 and between each end branch pipe of induced drafting 14, in the in-process of drying, in order to guarantee to fully dry the material, can carry out suitable rotation between the end branch pipe of drying 11 and the end branch pipe of induced drafting 14 in the drying process to avoid the unable blowing or sucking of some material to, in order to realize the inside more abundant blowing or sucking of material, improve the drying efficiency to the material.
The inner periphery and/or the outer periphery of the first air blowing branch pipe 10 is provided with a material blocking net for preventing materials from entering the first air blowing branch pipe 10 from the first air outlet hole 16; and/or, the inner circumference and/or the outer circumference of the end air blowing branch pipe 11 are provided with a material blocking net for preventing materials from entering the end air blowing branch pipe 11 from the second air outlet hole 18; and/or, the inner circumference and/or the outer circumference of the first suction branch pipe 13 is provided with a material blocking net for preventing materials from entering the first suction branch pipe 13 from the first suction holes 17; and/or the inner circumference and/or the outer circumference of the end suction manifold 14 are provided with a material blocking net for preventing material from entering the end suction manifold 14 from the second suction holes 19. The material blocking net can effectively protect the first blowing branch pipe 10, the tail end blowing branch pipe 11, the first air suction branch pipe 13, the tail end air suction branch pipe 14 and other pipelines embedded into materials, and can effectively avoid the problems that the materials enter a pore channel to block an air outlet hole and cause unsmooth operation of equipment in the process of drying the materials.
The first wind energy conversion device 1 comprises a first wind blade 21 and the wind supply device 3 comprises a blower fan 22, the first wind blade 21 being drivingly connected to the blower fan 22 and driving the blower fan 22 in rotation. The second wind energy conversion device 2 comprises a second wind blade 24 and the suction device 5 comprises a further blower fan 22, the second wind blade 24 being drivingly connected to the further blower fan 22 and driving the further blower fan 22 in rotation. Wherein the air outlet of the blower fan 22 connected with the first wind blade 21 is connected with the air inlet of the blowing main pipe 9, and the air inlet of the blower fan 22 is connected with the external environment, so that the air is sucked from the external environment and sent into the material for drying. The air inlet of the blower fan 22 connected with the second wind blade 24 is connected to the air outlet of the air suction main pipe 12, and the air outlet of the blower fan 22 is connected to the external environment, so that air in the material is sucked into the external environment, and moisture in the material is sucked away.
Preferably, the first wind blade 21 and the second wind blade 24 are wind driven generator blades, which can convert natural wind energy into rotational mechanical energy better, and improve energy conversion efficiency, so that the first wind blade 21 and the second wind blade 24 can drive the blower fan 22 to blow better, and provide sufficient air energy for drying materials.
Preferably, the first wind blades 21 are connected with the corresponding blower fans 22 through a first gearbox 23, and the first gearbox 23 is used for increasing the rotation speed of the blower fans 22. The second wind blades 24 are connected with the corresponding blower fan 22 through a second gearbox 25, and the first gearbox 23 is used for increasing the rotating speed of the blower fan 22. In general, the radius of the wind blade is larger, and accordingly, the rotating speed is slower, if the rotating speed of the wind blade is kept the same as that of the blower fan, the rotating speed of the blower fan is lower, the wind force of the blowing air is smaller, and the air quantity is smaller. The gearbox can adjust the rotation proportion between wind blade and the blower fan, improves the rotation wind speed of the blower fan to realize that can produce the compressed air that has certain wind pressure under breeze, carry it to the material, realize blowing and drying to the material. The gearbox is for example a gear box, but may also be other stepless speed regulating mechanisms.
The rotating shaft of the first wind blade 21 is vertically arranged, and the corresponding rotating shaft of the blower fan 22 is vertically arranged; or, the rotation shaft of the first wind blade 21 is horizontally arranged, and the rotation shaft of the blower fan 22 corresponding to the rotation shaft is horizontally arranged; or, the rotation shaft of the first wind blade 21 is vertically arranged, and the rotation shaft of the blower fan 22 corresponding to the rotation shaft is horizontally arranged; or, the rotation axis of the first wind blade 21 is horizontally arranged, and the rotation axis of the blower fan 22 corresponding to the rotation axis is vertically arranged. The wind energy borne by the wind blade can be smoothly converted into mechanical rotation energy by the various modes, so that better energy conversion is realized, and the air conveying capability of materials is ensured. For the condition that the rotating shaft of the wind blade is perpendicular to the rotating shaft of the blower fan, kinetic energy transmission is generally realized through bevel gear transmission. The positional relationship between the second wind blade 24 and the corresponding rotation shaft of the blower fan 22 may be designed with reference to the above-described structure.
At least part of the air pipe device is adjustable in position along the horizontal direction. Specifically, the position of the air duct device in the direction of arrangement of the plurality of first air-blowing branch pipes 10 is adjustable, and the positions of the air-blowing pipe group 7 and the air-suction pipe group 8 are integrally adjustable. In the running process of the drying system, because the arrangement space of the first air blowing branch pipes 10 is larger, the area between two adjacent first air blowing branch pipes 10 can not be sufficiently dried, so that the position of the air pipe device along the arrangement direction of the plurality of first air blowing branch pipes 10 can be controlled in the running process of the drying system, the position of the first air blowing branch pipes 10 of the air pipe device can be adjusted to the area between the two adjacent first air blowing branch pipes 10 before, and the material in the middle is purged, so that the purging of the largest area of the material is realized, the uniformity of material drying is ensured, and the maximization of the drying efficiency is ensured. Likewise, after the position is adjusted, the air suction pipe can also suck the materials more comprehensively, so that the suction of the maximum area of the materials is realized, the uniformity of drying the materials is ensured, and the drying efficiency is maximized.
Referring to fig. 12 in combination, according to an embodiment of the present invention, a control method of a blowing-sucking combined material drying system includes: controlling the blowing part to blow air to the air pipe device to dry the materials; stopping the blowing part after the blowing part runs for T1, starting the air suction part to suck air to the air pipe device, drying materials, and switching to a step of controlling the blowing part to blow air to the air pipe device after the blowing part runs for T2; repeating the steps, and alternately blowing, sucking and drying the materials.
T1 is, for example, 40min and T2 is, for example, 30min.
Through foretell control method, can realize that drying system is to the alternate cooperation of blowing dry and suction drying of material for material moisture is dried more fully, and drying efficiency is higher.
Of course, the above is a preferred embodiment of the present invention. It should be noted that it will be apparent to those skilled in the art that several modifications and adaptations can be made without departing from the general principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims (26)

1. A blow-suction combined material drying system, comprising:
the air pipe device is provided with an air passing hole;
a blowing part connected to the air duct device and blowing air to the air duct device;
the air suction part is connected to the air pipe device and sucks air to the air pipe device;
the air pipe device comprises an air blowing pipe group (7) and an air suction pipe group (8) which are mutually independent, wherein the air blowing part is connected to the air blowing pipe group (7), and the air suction part is connected to the air suction pipe group (8); the air blowing pipe group (7) comprises an air blowing main pipe (9), a first air blowing branch pipe (10) connected to the air blowing main pipe (9) and a tail end air blowing branch pipe (11) connected to the first air blowing branch pipe (10), and the air blowing pipe group (8) comprises an air blowing main pipe (12), a first air blowing branch pipe (13) connected to the air blowing main pipe (12) and a tail end air blowing branch pipe (14) connected to the first air blowing branch pipe (13); the first air suction branch pipes (13) are arranged in parallel relative to the first air blowing branch pipes (10), and the tail end air suction branch pipes (14) are arranged in parallel relative to the tail end air blowing branch pipes (11); the utility model discloses a dry blowing device, including first branch pipe (13) that induced drafts, first branch pipe (10) that induced drafts is located directly over first branch pipe (13) that induced drafts, just first branch pipe (10) that induced drafts with first branch pipe (13) that induced drafts one-to-one sets up, terminal branch pipe (11) with terminal branch pipe (14) that induced drafts all downwardly extending, first branch pipe (13) correspond the position of terminal branch pipe (14) that induced drafts is provided with dodges curved pipe section (15) of terminal branch pipe (14), terminal branch pipe (11) that induced drafts with terminal branch pipe (14) are followed the extending direction of first branch pipe (10) that induced drafts and the direction of arranging of first branch pipe (10) all alternate the arrangement, when drying the material, through blow house steward (9) with first branch pipe (10) that induced drafts stretch into inside the material, through house steward (12) with first branch pipe (13) that induced drafts inside the material, take out the wet air inside the material to outside environment, alternately dry the material and blow the material.
2. The blow-suction combined material drying system according to claim 1, wherein the blow-out section comprises:
the first wind energy conversion device (1) is used for converting natural wind into mechanical rotation energy and is provided with an output end for outputting rotation acting force;
and the air supply device (3) is connected to the output end of the first wind energy conversion device (1) and is driven to rotate by the first wind energy conversion device (1), and an air outlet of the air supply device (3) is connected to the air blowing part.
3. A blow-suction combined material drying system according to claim 1, characterized in that the blowing section comprises an electric blowing device (4), the air outlet of the electric blowing device (4) being connected to the air duct arrangement.
4. The blow-suction combined material drying system according to claim 1, wherein the suction portion comprises:
the second wind energy conversion device (2) is used for converting natural wind into mechanical rotation energy and is provided with an output end for outputting rotation acting force;
the air suction device (5) is connected to the output end of the second wind energy conversion device (2) and is driven to rotate by the second wind energy conversion device (2), and an air inlet of the air suction device (5) is connected to the air suction part.
5. A blow-suction combined material drying system according to claim 1, characterized in that the suction section comprises an electric suction device (6), the air inlet of the electric suction device (6) being connected to the air duct arrangement.
6. A blow-suction combined material drying system according to any of claims 1-5 and wherein said air duct means is of unitary construction having an air inlet and an air outlet, said blower being connected to said air inlet and said air suction being connected to said air outlet.
7. A blowing and sucking combined material drying system according to claim 1, wherein a plurality of said first blowing branch pipes (10) and a plurality of said first suction branch pipes (13) are alternately arranged in a horizontal direction, said end blowing branch pipes (11) located on the same first blowing branch pipe (10) are arranged in a row, said end suction branch pipes (14) located on the same first suction branch pipe (13) are arranged in a row, and said end blowing branch pipes (11) and said end suction branch pipes (14) are alternately arranged in a row unit along an arrangement direction of said first blowing branch pipes (10).
8. The blowing-sucking combined material drying system according to claim 1, wherein the first blowing branch pipes (10) and the first air suction branch pipes (13) are arranged in a vertically staggered manner, the first blowing branch pipes (10) are arranged along a first direction, and the first air suction branch pipes (13) are arranged along a second direction perpendicular to the first direction.
9. A blow-suction combined material drying system according to claim 8, characterized in that the end blow branch pipes (11) and the end suction branch pipes (14) are alternately arranged along the extension direction of the first blow branch pipe (10).
10. The blowing-sucking combined material drying system according to claim 1, wherein the first blowing branch pipe (10) and the first air suction branch pipe (13) are arranged in a vertically staggered manner, and the extending direction of the first blowing branch pipe (10) and the extending direction of the first air suction branch pipe (13) form an acute angle.
11. A blow-suction combined material drying system according to claim 10, characterized in that the end blow branch pipes (11) and the end suction branch pipes (14) are alternately arranged in the extending direction of the first blow branch pipe (10).
12. The blowing-sucking combined material drying system according to claim 1, wherein a first air outlet hole (16) is formed in the first air blowing branch pipe (10), and a first air suction hole (17) is formed in the first air suction branch pipe (13); and/or, a second air outlet hole (18) is arranged on the tail end air blowing branch pipe (11), and a second air suction hole (19) is arranged on the tail end air suction branch pipe (14).
13. A blow-suction combined material drying system according to claim 1, characterized in that the pipe diameter of the first blow branch pipe (10) is smaller than the pipe diameter of the blow main pipe (9), and the pipe diameter of the terminal blow branch pipe (11) is smaller than the pipe diameter of the first blow branch pipe (10); and/or the pipe diameter of the first air suction branch pipe (13) is smaller than the pipe diameter of the air suction main pipe (12), and the pipe diameter of the tail end air suction branch pipe (14) is smaller than the pipe diameter of the first air suction branch pipe (13).
14. A blow-suction combined material drying system according to claim 13, characterized in that the pipe diameter area of the blow manifold (9) is 5% to 10% greater than the sum of the pipe diameter areas of the first blow branch pipes (10); and/or, the pipe diameter area of the air suction header pipe (12) is 5% to 10% greater than the sum of the pipe diameter areas of the first air suction branch pipes (13).
15. The suction and blowing combined material drying system according to claim 12, wherein a plurality of the first air outlet holes (16) gradually increase in aperture along the gas flow direction; and/or a plurality of the second gas outlet holes (18) gradually increase in aperture along the gas flow direction; and/or a plurality of the first suction holes (17) gradually decrease in aperture along the gas flow direction; and/or, the plurality of second suction holes (19) gradually decrease in aperture along the gas flow direction.
16. The suction and blowing combined material drying system according to claim 12, wherein a plurality of the first air outlet holes (16) are gradually reduced in hole pitch along the gas flow direction; and/or a plurality of the second gas outlet holes (18) are gradually reduced in hole pitch along the gas flow direction; and/or, the hole pitch of the plurality of first suction holes (17) along the gas flow direction is gradually increased; and/or, the hole pitch of the plurality of second suction holes (19) is gradually increased along the gas flow direction.
17. The blowing-sucking combined material drying system according to claim 12, wherein the first blowing branch pipe (10) is divided into a plurality of air outlet areas along the length direction, the apertures of the first air outlet holes (16) positioned in the same air outlet area are the same, and the apertures of the first air outlet holes (16) in each air outlet area are gradually increased along the air flow direction; and/or, the tail end blowing branch pipe (11) is divided into a plurality of air outlet areas along the length direction, the apertures of the second air outlet holes (18) positioned in the same air outlet area are the same, and the apertures of the second air outlet holes (18) in each air outlet area are gradually reduced along the air flow direction.
18. A blow-suction combined material drying system according to claim 1, characterized in that at least one of the inlets of the first blow-off branch pipes (10) is provided with a control valve (20); and/or a control valve (20) is arranged at the outlet of at least one first air suction branch pipe (13).
19. A blowing and sucking combined material drying system according to claim 1, wherein the blowing header pipe (9) is vertically arranged, a plurality of the first blowing branch pipes (10) are arranged at intervals along the vertical direction, and each of the first blowing branch pipes (10) extends along the horizontal direction; the air suction main pipe (12) is vertically arranged, a plurality of first air suction branch pipes (13) are arranged at intervals along the vertical direction, and each first air suction branch pipe (13) extends along the horizontal direction.
20. A blowing and suction combined material drying system according to claim 1, characterized in that the end blow branch pipe (11) is rotatably arranged around its own central axis; and/or, the tail end air suction branch pipe (14) is rotatably arranged around a central rotating shaft of the tail end air suction branch pipe.
21. The blowing and sucking combined material drying system according to claim 12, characterized in that the inner circumference and/or the outer circumference of the first blowing branch pipe (10) is provided with a material blocking net preventing material from the first air outlet hole (16) from entering the first blowing branch pipe (10); and/or the inner periphery and/or the outer periphery of the tail end air blowing branch pipe (11) are/is provided with a material blocking net for preventing materials from entering the tail end air blowing branch pipe (11) from the second air outlet holes (18); and/or the inner periphery and/or the outer periphery of the first air suction branch pipe (13) are/is provided with a material blocking net for preventing materials from entering the first air suction branch pipe (13) from the first air suction holes (17); and/or the inner circumference and/or the outer circumference of the tail end air suction branch pipe (14) are/is provided with a material blocking net for preventing materials from entering the tail end air suction branch pipe (14) from the second air suction holes (19).
22. A blow-suction combined material drying system according to claim 2, characterized in that the first wind energy conversion device (1) comprises a first wind blade (21), the air supply device (3) comprises a blower fan (22), the first wind blade (21) is drivingly connected to the blower fan (22) and drives the blower fan (22) to rotate.
23. The blowing and sucking combined material drying system according to claim 22, wherein the first wind blade (21) is connected with the blower fan (22) through a first gearbox (23), and the first gearbox (23) is used for increasing the rotation speed of the blower fan (22).
24. The blowing-suction combined material drying system according to claim 22, characterized in that the rotation axis of the first wind blade (21) is arranged vertically, and the rotation axis of the blower fan (22) is arranged vertically; or the rotating shaft of the first wind blade (21) is horizontally arranged, and the rotating shaft of the blower fan (22) is horizontally arranged; or the rotating shaft of the first wind blade (21) is vertically arranged, and the rotating shaft of the blower fan (22) is horizontally arranged; or the rotating shaft of the first wind blade (21) is horizontally arranged, and the rotating shaft of the blower fan (22) is vertically arranged.
25. The blow-suction combined material drying system according to claim 1, wherein at least a portion of the air duct means is horizontally adjustable.
26. A method of controlling a blow-suction combined material drying system according to any one of claims 1 to 25, comprising:
controlling the blowing part to blow air to the air pipe device to dry the materials;
stopping the blowing part after the blowing part runs for T1, starting the air suction part to suck air to the air pipe device, drying materials, and switching to a step of controlling the blowing part to blow air to the air pipe device after the blowing part runs for T2;
repeating the steps, and alternately blowing, sucking and drying the materials.
CN201710459446.4A 2017-06-16 2017-06-16 Blowing-sucking combined material drying system and control method thereof Active CN107120927B (en)

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