CN107144118B - Four-direction air supply alternating type drying structure and grain drying machine with same - Google Patents
Four-direction air supply alternating type drying structure and grain drying machine with same Download PDFInfo
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- CN107144118B CN107144118B CN201710515087.XA CN201710515087A CN107144118B CN 107144118 B CN107144118 B CN 107144118B CN 201710515087 A CN201710515087 A CN 201710515087A CN 107144118 B CN107144118 B CN 107144118B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
- F26B17/122—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the material moving through a cross-flow of drying gas; the drying enclosure, e.g. shaft, consisting of substantially vertical, perforated walls
- F26B17/126—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the material moving through a cross-flow of drying gas; the drying enclosure, e.g. shaft, consisting of substantially vertical, perforated walls the vertical walls consisting of baffles, e.g. in louvre-arrangement
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B9/00—Preservation of edible seeds, e.g. cereals
- A23B9/08—Drying; Subsequent reconstitution
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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
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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
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
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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
- F26B2200/06—Grains, e.g. cereals, wheat, rice, corn
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
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Abstract
The invention discloses a four-direction air supply alternating type drying structure and a grain dryer with the same, comprising: the air inlet angular pipes are arranged in parallel, transversely and vertically in layers, correspondingly, the air outlet angular pipes are arranged in parallel, vertically and transversely in layers and arranged in a structure like a Chinese character 'jing' with the air inlet angular pipes; the air inlet layer formed by the air inlet horn-shaped pipes is inserted into the air exhaust layer interlayer formed by the air exhaust horn-shaped pipes; the horn-shaped air inlet pipe comprises a closed blind plate, and the closed blind plates are arranged in a stepped staggered mode layer by layer. The invention effectively improves the inconsistent grain surface air-viewing speed of the tower type mixed flow grain dryer, solves the problem of grain pile segregation, saves energy, is environment-friendly and efficient, and has the characteristics of flexible drying unit configuration, good integral structure, attractive appearance and easy formation of standardization, serialization and universalization of the same type of dryer.
Description
Technical Field
The invention relates to a tower type mixed flow grain dryer, in particular to a four-direction air supply alternating type drying structure and a grain dryer with the same.
Background
The grain harvested in autumn in most areas of China has high moisture and can not reach the standard of safe storage, so the grain must be dried by drying equipment, a large-scale tower-type mixed-flow grain dryer consists of a grain storage section, a drying section, a tempering section, a cooling section and a grain discharge section, the drying section is the core part of the equipment, and whether the structure and the layout of the drying section reasonably and directly influence the performance index of the equipment. The length of the air inlet horn-shaped pipe of the drying section of most of domestic large tower type mixed flow grain dryers is generally between 1.0 meter and 3.0 meters, the air inlet and exhaust horn-shaped pipes are arrayed in a forward parallel up-down staggered manner, one end of each air inlet and exhaust horn-shaped pipe is closed, the other end of each air inlet and exhaust horn-shaped pipe is open, the opening of each air inlet is an air inlet horn-shaped pipe, the opening of each air inlet is an exhaust horn-shaped pipe, the opening of each air outlet is an exhaust horn-shaped pipe, most of air inlet directions are unidirectional, namely, hot air is fed into one side, and air is discharged from the opposite side. The longer the horn-shaped air inlet pipe, the larger the pressure loss when hot air flows through, and the hot air flow also has certain inertia, and is easy to form vortex at the closed end of the horn-shaped pipe, so that the air volume and the air pressure are not uniform in the length direction of the horn-shaped air inlet pipe, and particularly the wind direction tail end is more obvious, which directly causes the inconsistent apparent wind speed of the grain surface, and as a result, the drying effect is not ideal, and the energy is wasted. In addition, for the one-way or two-way air inlet dryer, the area between the forward air inlet and outlet angular pipe close to the side wall of the tower body and the side plate of the tower body is used for drying media, and if the throughput of hot air is too little, the drying is weak.
Theoretically, the grain voidage on the cross section of the grain dryer is required to be consistent, but most grains are small in the middle voidage and large in the periphery, so that the distribution of hot air is uneven, and the uniformity of drying is affected.
In view of the above-mentioned drawbacks, the inventors of the present invention have finally obtained the present invention through a long period of research and practice.
Disclosure of Invention
In order to solve the technical defects, the invention adopts a technical scheme that a four-direction air supply alternating type drying structure is provided, and comprises: the air inlet angular pipes are arranged in parallel, transversely and vertically in layers, correspondingly, the air outlet angular pipes are arranged in parallel, vertically and transversely in layers and arranged in a structure like a Chinese character 'jing' with the air inlet angular pipes; the air inlet layer formed by the air inlet angular pipes is inserted into the exhaust layer interlayer formed by the exhaust angular pipes; the horn-shaped air inlet pipe comprises a closed blind plate, and the closed blind plates are arranged in a stepped staggered mode layer by layer.
Preferably, the drying structure further comprises an angular tube bracket, wherein the angular tube bracket is an open-end angular tube bracket and/or a closed-end angular tube bracket, and is fixed at two ends of the air inlet angular tube and/or the air outlet angular tube.
Preferably, the drying structure further comprises a set of hot air chambers and a set of exhaust chambers respectively fixed on two sides of the angular air inlet pipe and the angular exhaust pipe.
Preferably, the exhaust chamber is closed and large-diffusion type, and an exhaust port is arranged on the side wall of the exhaust chamber; the hot air chamber is provided with an air duct which is arranged on one side of the air inlet horn-shaped pipe.
Preferably, the grain dryer comprises the above characteristics and further comprises a tower body, wherein the tower body further comprises a grain storage section, a plurality of drying sections, a tempering section, a cooling section, a cleaning section and a grain discharging section, and the drying sections are composed of a plurality of drying units.
Preferably, the grain storage section comprises an electric grain distributor, a feeding level device and a discharging level device; the grain discharging section is formed by discharging grains by a grain discharging roller, and the horizontal difference between the drying unit and the drying unit is 90 degrees.
Preferably, the grain discharging section is formed by four impeller grain discharging rollers which are oppositely arranged to forcibly discharge grains.
Preferably, the tempering section and the cooling section are vertically and alternately arranged in a vertical cross manner in a shape like a Chinese character 'jing' by the air inlet angle-shaped pipe and the air outlet angle-shaped pipe, a closed blind plate is arranged in the air inlet angle-shaped pipe on each layer of the cooling section, and a fan is arranged beside the cooling section.
Preferably, the tower body is a square steel structure tower body, and the tower body is provided with a tower section angle baffle; the air duct is arranged at the diagonal position of the grain dryer square steel structure tower body.
Preferably, the grain storage section further comprises an infrared monitoring camera; the grain discharging section also comprises an online moisture measuring instrument; an air temperature sensor is arranged in the air duct; and a grain temperature sensor is arranged between the drying section and the cooling section.
Compared with the prior art, the invention has the beneficial effects that:
1. the inconsistency of the grain surface air-viewing speed of the tower type mixed flow grain dryer is improved;
2. the air inlet horn-shaped pipe and the air outlet horn-shaped pipe are arranged up and down in a 'well' shape, the flowing position of the grains from top to bottom is changed, the grain position is changed, hot air is more fully contacted with the grains, the grain temperature is more uniform, and a 'dead zone' is avoided;
3. ensuring that the grain void degree on the cross section of the dryer is basically consistent;
4. the exhaust chamber is arranged and closed, so that the environmental protection requirement is met;
5. the tempering section further ensures the drying uniformity under the condition of ensuring the structural strength, and the steam can be automatically discharged outside to avoid the tower body expansion;
6. the drying unit is flexibly configured;
7. the productivity is improved;
8. the unit heat consumption is reduced, and the energy is saved;
9. drying unevenness is reduced, and heat damage particles are reduced;
10. the quality of the dried finished product is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is an elevation view of a drying section;
FIG. 2.1: a first layer of inlet horns in plan view;
FIG. 2.2: a plan view of the second layer of air inlet horns;
FIG. 2.3: a third layer of horn-shaped air inlet pipe;
FIG. 2.4: a fourth layer of inlet horns;
FIG. 2.5: a fifth layer air inlet horn-shaped pipe plan view;
FIG. 3: welding a single air inlet horn-shaped pipe closed blind plate;
FIG. 4 is a three-view diagram of a four-direction blowing alternative drying structure and a grain dryer having the same;
FIG. 5 is a schematic perspective view of an arrangement of horned tubes of a drying unit of a four-directional blowing alternating drying structure and a grain dryer having the same;
FIG. 6 is a perspective view of a four-way blowing alternative drying structure and a single air inlet horn-shaped tube and a sealed blind plate of a grain dryer with the same;
FIG. 7 is a three-dimensional view of a closed end air intake horn bracket;
fig. 8 is a three-dimensional view of an open-ended angled tube holder.
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
Example 1
As shown in figures 1, 2 and 3, the four-direction air supply alternating type drying section of the invention consists of a drying section side plate 3A, air inlet and outlet angular pipes 2A and 1A, a closed blind plate 4A, angular pipe brackets 5A and 6A, a tower column 7A and a tower section angular baffle 8A, which can be assembled by bolts or welded. In the first layer of the inlet horn of fig. 2.1, the left inlet horn is closed and the right inlet horn is open, and hot air flows into the right inlet horn from the left side, and the hot air flows into the right inlet horn through the right inlet horn and the left inlet horn are of the cross-sectional length L (equal to the length of the inlet horn). In the plan view of the second layer of the horn-shaped air inlet pipe in fig. 2.2, the horn-shaped air inlet pipes on the left and right sides are open, and hot air flows enter from the two sides. And a closed blind plate 4A is welded at 1/4 of the left side of the air inlet horn-shaped pipe, so that the length of hot air flow at the left side is 1/4 of the length of the cross section L, and the length of hot air flow at the right side is 3/4 of the length of the cross section L. The left and right side horn-shaped air inlet pipes on the plane view of the third layer of the horn-shaped air inlet pipe in the figure 2.3 are both opened, and hot air flows enter from both sides. And a closed blind plate 4A is welded at the 1/2 position of the air inlet horn-shaped pipe, so that the length of hot air flow at the left side and the right side is 1/2 of the length L of the cross section. The left and right inlet horns are also open on the plane view of the inlet horns in the fourth layer of figure 2.4, and hot air flows into the inlet horns from two sides. And a closed blind plate 4A is welded at the position of 3/4 of the left side of the air inlet horn-shaped pipe, so that the length of hot air flow at the left side is 3/4 of the length of the cross section L, and the length of hot air flow at the right side is 1/4 of the length of the cross section L. In the fifth layer of the intake horn in fig. 2.5, the right side intake horn is closed in plan view, the left side intake horn is open, and the hot air flow enters from the left side, and the length of the right side intake horn is the section length L (equal to the length of the intake horn). Therefore, the wind pressure and wind speed of the air inlet angle-shaped pipes on the upper layer and the lower layer of the 5 sections of drying units (each layer of air inlet angle-shaped pipe and the additional exhaust angle-shaped pipe are defined as 1 section of drying unit, and a plurality of drying units form a drying section.) are complementary on the length L of the cross section, so that the phenomenon that the wind pressure and wind speed of hot air flow in a certain area of grain are too large or too small for a long time is avoided, and the comprehensive grain surface of the whole drying section has basically consistent wind speed.
The drying section can be composed of more than 5 drying units or less than 5 drying units, and the proper number of the drying units can be determined by changing the welding position of the closed blind plate 4A according to the processing capacity of the dryer.
The tempering sections of the dryer are inserted among the drying units, the arrangement positions and the number of the tempering sections are different according to different types of dried grains, air inlet and exhaust of the drying sections are not influenced, the structure and the layout of the drying sections are not influenced, the overall height of a tower body is influenced, and the design of the dryer needs to be considered.
Example 2
Referring to fig. 4-8, the grain dryer with a four-way blowing alternating drying structure of the present invention is composed of an electric grain separator 1, a grain storage section 2, an infrared monitoring camera 3, a feeding level device 4, a discharging level device 5, an exhaust angle-shaped pipe 6, an open end angle-shaped pipe bracket 7, a first layer of intake angle-shaped pipe 8, a closed end intake angle-shaped pipe bracket 9, a left hot air chamber 10, a right hot air chamber 11, a second layer of intake angle-shaped pipe 12, a closed blind plate 13, a third layer of intake angle-shaped pipe 14, a first drying unit 15, a blind window 16, a rear exhaust chamber 17, a front exhaust chamber 18, a left exhaust chamber 19, a right exhaust chamber 20, a rear hot air chamber 21, a front hot air chamber 22, a second drying unit 23, a tempering section 24, a third drying unit 25, a fourth drying unit 26, a cooling section 27, a temperature sensor 28, a cooling chamber 29, a cooling fan 30, a cleaning section 31, a grain discharge section 32, an online moisture measuring instrument 33, a hot air 34, a first hot air duct 35, a second hot air duct 36, an air duct 37, a temperature sensor 38, a drying tower section 39, and a drying baffle 39. Grain enters the dryer main body 39 through the lifting conveying equipment, and is firstly subjected to grain equalization through the electric grain distributor 1, so that the problem of grain pile segregation is solved. When the grains are loaded to the grain storage section 2, the discharging level indicator 5 and the feeding level indicator 4 of the dryer start to act, the operation of the previous feeding process equipment is automatically controlled, the grains in the tower body are ensured to be between the upper material level and the lower material level all the time, and the normal and continuous operation of the dryer can be ensured. In material loading and normal production process, infrared monitoring camera 3 is in the on state all the time, and operating personnel can store the flow condition of grain in the grain section 2 through watch-dog display screen real-time supervision (can in time discover electronic grain ware of dividing and go up the level ware emergency from top to bottom, ensure that conveying equipment can in time stop and increase grain in succession). After the tower body grain is filled, the drying is started, and the wet grain flows through the first drying unit 15 from top to bottom by the dead weight. The first drying unit 15 is composed of 3 layers of air inlet angle-shaped pipes, 4 layers of air outlet angle-shaped pipes, a left hot air chamber, a right hot air chamber, a front air outlet chamber, a rear air outlet chamber and the like. Hot air 34 is simultaneously blown into a first hot air duct 35 and a second hot air duct 36 which are insulated (the buffer time of the hot air ducts is utilized to ensure the uniform air pressure of the hot air), and then respectively enters the right hot air chamber 11 and the left hot air chamber 10 (the air speed of the air entering the air inlet horn-shaped pipes is consistent). The hot air 34 entering the right hot air chamber 11 enters the first-tier air intake angular pipe 8 and the second-tier air intake angular pipe 12 from the right side. The hot air 34 entering the left hot air chamber 10 enters the second layer air inlet horn-shaped pipe 12 and the third layer air inlet horn-shaped pipe 14 from the left side (the air direction is changed, so that the hot air strength of each surface of each grain particle is the same). The hot-blast penetration grain layer that gets into the horn shape pipe of admitting air and taking away moisture and accomplish drying process, and exhaust gas is discharged from the both ends of exhaust horn shape pipe 6 and is directly got into back exhaust chamber 17 and preceding exhaust chamber 18 (two-way exhaust chamber makes its exhaust gas with each corner get rid of more abundant getting rid of clean), and the exhaust gas that gets into the exhaust chamber is here dustfall then is discharged outside from shutter 16 (the effectual environmental pollution that prevents, and the dust that falls to the bottom is easily cleared up). The right end of the first layer air inlet angular pipe 8 is in threaded connection with the side plate of the dryer through the angular pipe bracket 7 at the opening end and is communicated with the side plate of the dryer, and the left end of the first layer air inlet angular pipe is in threaded connection with the side plate of the dryer through the angular pipe bracket 9 at the closed end and is closed. The left end and the right end of the second layer air inlet horn-shaped pipe 12 are in threaded connection and communication with the side plate of the dryer through the horn-shaped pipe bracket 7 at the opening end, hot air 34 enters from the left end and the right end at the same time, and in order to prevent the hot air 34 entering from the left end and the right end from being communicated, a sealed blind plate 13 needs to be welded at the middle position of the horn-shaped pipe (the hot air flowing in opposite directions is prevented from meeting to cause hot air turbulence, and therefore the hot air speed and the air pressure in the dryer are changed). The left end of the third layer of air inlet horn-shaped pipe 14 is in threaded connection and communication with the side plate of the dryer through the horn-shaped pipe bracket 7 at the opening end, and the right end of the third layer of air inlet horn-shaped pipe is in threaded connection and sealing with the side plate of the dryer through the horn-shaped pipe bracket 9 at the closed end (corresponding to the first layer, so that the effect that the grain particles are uniformly heated by hot air is achieved).
When the grains flow through the second drying unit 23, the drying principle is basically the same as that of the first drying unit 15, hot air 34 is simultaneously blown into a first hot air channel 35 and a second hot air channel 36 which are insulated and then respectively enter a rear hot air chamber 21 and a front hot air chamber 22, an air inlet horn-shaped pipe is used for front and rear air inlet, an air exhaust horn-shaped pipe is used for left and right air exhaust, and the air inlet horn-shaped pipe is just opposite to the first drying unit 15 (the aim is to achieve the aim that all sides of the grains can be dried by the hot air by utilizing different directions of the hot air). In summary, when the grains flow through the first drying unit 15 and the second drying unit 23, four-directional air supply processes of left and right air intake, front and back air exhaust, front and back air intake, and left and right air exhaust are completed. The airtight blind plate 13 is welded in the middle of the air inlet angle-shaped pipe (the second layer air inlet angle-shaped pipe 12) in the middle layer of the first drying unit 15 and the second drying unit 23, the middle position is the wind direction end, and the wind direction ends of the other two layers of air inlet angle-shaped pipes are the side walls of the dryer, so that the purpose of wind pressure and wind speed complementation in the middle of the tower body and around the tower body is achieved. (even wind speed and wind pressure distribution, so that the drying degree of each grain particle at each angle is the same)
The grain flows into the tempering section after being dried by the two drying units, the internal structure of the grain is similar to that of the drying section, the air inlet angle-shaped pipe and the air outlet angle-shaped pipe are vertically and crossly arranged in a staggered way from top to bottom in a 'well' shape, but the grain does not intake air or exhaust air, and the two ends of the grain are communicated with the air exhaust chamber. The aim of doing so is that the grain in the tempering section is a high-temperature wet body, the moisture is to be evaporated, the evaporated moisture can directly enter the exhaust chamber through the horn-shaped pipe, and the appearance of tower expansion is avoided; secondly, the structural strength of the section is increased; and thirdly, the grains are continuously changed in position and changed in flow state when flowing through the section, so that preparation is made for the continuous drying of the next drying unit, and the drying uniformity is further ensured.
The drying principle and process of the third drying unit 25 and the fourth drying unit 26 are the same as those of the first drying unit 15 and the second drying unit 23 (the grains after partial moisture evaporation are dried again to reach the moisture requirement of the dried finished product).
The dried grains enter the cooling section, the internal structure of the cooling section is similar to that of the drying section, and the air inlet horn-shaped pipes and the air outlet horn-shaped pipes are vertically crossed and staggered in a Chinese character 'jing'. It is composed of 2 layers of air inlet angle-shaped pipes and 3 layers of air outlet angle-shaped pipes, and a closed blind plate 13 is welded in the middle of each layer of air inlet angle-shaped pipe. Outside air is used as a cooling medium, is blown into the cold air chamber 29 through the fan 30 (2), then enters the air inlet horn-shaped pipe, penetrates through the grain layer to be cooled (the grain is prevented from deteriorating due to frosting on the surface of the grain when the temperature of the dried grain is too high and the grain is convenient to store and transport).
The cooled grain enters the cleaning section 31 and the grain discharge section 32. The cleaning section 31 is provided with a cleaning maintenance door (the tower is convenient to clean when dry varieties are easy to replace) which can be accessed. The grain discharging section 32 adopts four impeller grain discharging rollers which are oppositely arranged to forcibly discharge grains, the grain discharging rollers are driven by a grain discharging motor, and the online moisture measuring instrument 33 controls the revolution of the motor to realize stepless discharging.
The four-direction air supply alternating type drying structure and the grain dryer with the structure are also provided with an air temperature sensor 37 and a grain temperature sensor 28, so that the hot air temperature and the grain temperature are monitored in real time (the grains are prevented from deteriorating due to the change of the temperature, and the optimal drying effect is achieved).
Example 3
On the basis of the embodiments 1 and 2, the closed blind plate is installed according to the following formula:
in the formula: w is a group of p Representing the wind pressure, V, entering the intake horns Wind (W) Representing the total amount of air entering each air duct, and r represents the density of air at different temperatures; l represents the width of the air duct, H represents the distance from the bottom of the air duct to the air inlet corner pipe, and W p1 Representing the wind pressure, W, entering at the left/front of the same inlet horn p2 Representing the air pressure entering from the right side/back side of the same air inlet horn-shaped pipe, S representing the length of the air inlet horn-shaped pipe, d 1 Representing the placement of the left/front horn-shaped internal sealing blind plate at a fixed point at the left/front end of the horn-shaped intake pipe, d 2 The right/rear air inlet horn-shaped pipe inner closed blind plate is arranged at a fixed point at the right/rear end of the air inlet horn-shaped pipe. The airtight blind plate is installed in position through the formula, the blowing force and direction in the airtight blind plate can be effectively controlled, the control of the blowing force and direction effectively enables each surface of grains to be uniformly heated, and the corrosion resistance and the dehumidification performance of the grains can be better improved.
The above-described embodiments are preferred embodiments of the present invention, and the present invention is not limited thereto, and any other modifications or equivalent substitutions that do not depart from the spirit of the present invention are intended to be included within the scope of the present invention. The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative and not limiting. It will be appreciated by those skilled in the art that many variations, modifications, and equivalents may be made thereto without departing from the spirit and scope of the invention as defined in the claims.
Claims (9)
1. A four-way air supply alternating drying structure is characterized by comprising: a plurality of layers of exhaust horn-shaped pipes and a plurality of layers of intake horn-shaped pipes; the air inlet angle-shaped pipes are arranged in parallel, transversely and vertically in layers, correspondingly, the exhaust angle-shaped pipes are arranged in parallel, transversely and horizontally in layers and arranged in a structure like a Chinese character 'jing' with the air inlet angle-shaped pipes, and an air inlet layer formed by the air inlet angle-shaped pipes is inserted into an exhaust layer interlayer formed by the exhaust angle-shaped pipes; the air inlet horn-shaped pipe comprises a closed blind plate, and the closed blind plates are staggered in a stepped manner layer by layer; quadriversal air supply alternation formula drying structure still includes a set of hot-blast room and a set of exhaust chamber, a plurality of layers the horn shape pipe of admitting air is including the first layer horn shape pipe of admitting air from top to bottom, the horn shape pipe of admitting air of second floor and third layer horn shape pipe of admitting air, hot-blast room includes hot-blast room in the right side and left hot-blast room, the hot-blast room in the right side sets up the horn shape pipe of admitting air of first layer with the right side of the horn shape pipe of admitting air of second floor, the hot-blast room in the left side sets up the horn shape pipe of admitting air of second floor with the left side of the horn shape pipe of admitting air of third layer, the exhaust chamber is fixed the both ends of the horn shape pipe of exhausting, airtight blind plate carries out the position installation according to following formula:
In the formula: wp represents the wind pressure into the inlet horn, V Wind power Representing the total amount of air entering each air duct, r representing the total amount of air entering each air duct at different temperaturesThe density of the air; l represents the width of the air duct, H represents the distance from the bottom of the air duct to the air inlet angle-shaped pipe, wp1 represents the air pressure entering from the left side/front side of the same air inlet angle-shaped pipe, wp2 represents the air pressure entering from the right side/rear side of the same air inlet angle-shaped pipe, S represents the length of the air inlet angle-shaped pipe, d1 represents the fixed point of the left side/front side of the air inlet angle-shaped pipe in which the sealing blind plate is arranged, and d2 represents the fixed point of the right side/rear side of the air inlet angle-shaped pipe in which the sealing blind plate is arranged at the right end/rear end of the air inlet angle-shaped pipe.
2. The structure of claim 1, further comprising a horn bracket, wherein the horn bracket is an open-end horn bracket and/or a closed-end horn bracket, and is fixed at both ends of the intake horn and/or the exhaust horn.
3. The structure of claim 1, wherein the exhaust chamber is closed and largely diffused and has an exhaust port on a sidewall; the hot air chamber is provided with an air duct, and the air duct is arranged on one side of the air inlet horn-shaped pipe.
4. The grain dryer comprising the four-direction air supply alternating drying structure of any one of claims 1 to 3, characterized by comprising a tower body, wherein the tower body further comprises a grain storage section, a drying section, a tempering section, a cooling section, a cleaning section and a grain discharge section, wherein the drying section consists of a plurality of drying units.
5. The grain dryer with the four-direction air supply alternating drying structure as claimed in claim 4, wherein the grain storage section comprises an electric grain divider, a feeding level indicator and a discharging level indicator; the grain discharging section is a grain discharging roller for discharging grains; the horizontal difference between the drying units is 90 degrees.
6. The grain dryer with the four-direction air supply alternating drying structure as claimed in claim 5, wherein the grain discharging section is a forced grain discharging section with four impeller grain discharging rollers arranged oppositely.
7. The grain drier with a four-direction blowing alternating drying structure as claimed in claim 6, wherein the tempering section and the cooling section are vertically and alternately arranged in a vertical cross manner in a shape of a Chinese character jing by the air inlet angle-shaped pipe and the air outlet angle-shaped pipe; a closed blind plate is arranged in the air inlet horn-shaped pipe of each layer of the cooling section; and a fan is arranged beside the cooling section.
8. The grain dryer of claim 7, wherein the tower body is a square steel structure tower body; the tower body is provided with a tower section angle baffle; the air duct is arranged at the diagonal position of the grain dryer square steel structure tower body.
9. The grain dryer with a four-directional blowing alternating drying structure as claimed in claim 8, wherein said grain storage section further comprises an infrared monitoring camera; the grain discharging section also comprises an online moisture measuring instrument; an air temperature sensor is arranged in the air duct; and a grain temperature sensor is arranged between the drying section and the cooling section.
Priority Applications (1)
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