CN115875945A - Hot air full recycling energy-saving drying tower - Google Patents

Abstract

The invention discloses an energy-saving drying tower for recycling all hot air, which comprises: a feeding bin; a discharging bin; a plurality of drying bins are arranged between the discharging bin and the feeding bin; an air supply chamber with a heating component is arranged in the middle of the drying chamber, air return chambers are arranged on two sides of the drying chamber, and an inlet of the air supply chamber is connected with an outlet of the adjacent air return chamber below through an air duct. According to the energy-saving drying tower for full recycling of hot air, air enters from the air inlet connected with the discharge bin, then the air is blown and heated in sequence along the opposite direction of falling of the materials, after the reduced temperature of the dried materials is complemented by each air supply chamber, the materials are dried and dehumidified, and then the air is blown into the air supply chamber of the previous drying bin to carry out the same drying process, so that the hot air after all moisture is collected for many times is discharged from the air outlet close to one end of the feed bin, the heat of the lower drying bin is fully utilized by the upper drying bin, and the waste of heat energy is avoided.

Description

Hot air full-recycling energy-saving drying tower

Technical Field

The invention relates to the technical field of environmental protection and energy conservation, in particular to an energy-saving drying tower for recycling all hot air.

Background

At present, the grain drying tower type widely used in China mainly adopts a continuous tower type drying tower and a convection heating power drying mode, and the working principle is as follows: the hot air is directly contacted with the grains, the heat in the hot air is transferred to the grains in a convection mode, so that the temperature of the grains is raised, the water in the grains is vaporized and evaporated, and the waste gas after heat release carries the water vapor out of the drying tower, thereby achieving the aim of drying the grains. Therefore, the hot air is not only a carrier for transferring heat but also a carrier for carrying moisture in the process of drying the grains, and is discharged out of the drying tower after the drying process is finished. Meanwhile, the dried grains cannot be safely stored due to high grain temperature, and the temperature of the grains must be reduced to the safe storage temperature in a cooling mode and then discharged out of the machine. The cooling of grain also all uses the air convection cooling's mode at present, and through cold air and grain contact promptly, the heat in the hot grain transmits the cold air through the mode of convection current for the temperature of grain descends, reaches refrigerated purpose. The temperature of the cold air rises after absorbing the heat in the grains, and the cold air becomes cooling waste gas with a certain temperature and is discharged out of the drying tower.

In the grain drying process, a large amount of drying waste gas is discharged due to the generation of drying waste gas and cooling waste gas. The drying waste gas has a certain temperature which can reach about 55 ℃, a large amount of drying waste gas is discharged to cause a large amount of heat loss, the heat of the discharged loss can account for more than 25% of the total heat of the drying system, and the cost of grain drying operation is increased.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the hot air full-recycling energy-saving drying tower, a plurality of drying bins are arranged along the material conveying direction, hot air passes through the drying bins along the opposite direction of the material conveying direction, moisture in the material in the drying bins is taken away in sequence, finally the hot air with the moisture is discharged from the drying bins close to the material input end, each drying bin does not need to discharge the hot air independently, the hot air is recycled for multiple times, the heat energy of each drying section is effectively utilized, and the energy is saved.

The object of the invention is achieved in the following way: hot-blast complete recycle energy-conserving drying tower includes:

a feeding bin;

the discharging bin is arranged below the feeding bin;

the drying bins are arranged between the feeding bin and the discharging bin;

the air inlet is connected with the drying bin close to one end of the discharging bin;

the air outlet is connected with the drying bin close to one end of the feeding bin;

the air return chamber is communicated with an air outlet of the drying bin;

the air supply chamber is communicated with an air inlet of the drying bin, and the air supply chamber is communicated with the air return chamber through an air channel;

and the heating assembly is arranged in the air supply chamber.

According to the drying tower, air enters from the air supply outlet of the lower air supply chamber through the air inlet of the drying chamber to heat materials, then enters the air outlet angle box, enters the air return chamber from the air outlet of the drying chamber, enters the upper air supply chamber through the air duct to be heated, then enters the drying chamber, and is sequentially heated along the opposite direction of falling of the materials from bottom to top, the materials are supplied with the reduced heat of the dried materials and then enter the upper drying chamber, the materials in the upper drying chamber are dried and dehumidified, each drying chamber does not need to independently exhaust hot air, and finally the hot air is exhausted from the air return chamber close to one end of the feeding chamber, the upper drying chamber fully utilizes the heat of the air in the lower drying chamber, and waste of heat energy is avoided.

As an alternative scheme of the technical scheme of the invention, each drying bin is provided with at least one group of air inlet angle boxes and one group of air outlet angle boxes, one end of each air inlet angle box is communicated with an air inlet of the drying bin, the other end of each air inlet angle box is of a closed structure, one end of each air outlet angle box is communicated with an air outlet of the drying bin, and the other end of each air outlet angle box is of a closed structure.

The materials are transported from top to bottom, the hot air heats the materials above the air inlet angle box, then the materials enter the air outlet angle box and enter the air return chamber from the air outlet angle box, and the air in the air return chamber enters the air supply chamber above the air return chamber through the air duct, is heated and then enters the air inlet angle box, and circulates in sequence.

As an alternative scheme of the technical scheme of the invention, the air outlet angle boxes and the air inlet angle boxes are alternately arranged in parallel.

As an alternative of the technical scheme of the invention, the air outlet angle box and the air inlet angle box are both of pentagonal box body structures with lower parts opened, and the air inlet and the air outlet are of pentagonal structures matched with the air outlet angle box and the air inlet angle box.

As an alternative of the technical solution of the present invention, the heating assembly includes a heater and a fan.

As an alternative scheme of the technical scheme of the invention, the heater is arranged at the air outlet of the air supply chamber, and the fan is arranged at the air inlet of the air supply chamber.

As an alternative scheme of the technical scheme of the invention, the drying bins are arranged on two sides of the air supply chamber, and two side walls of the air supply chamber are communicated with the air inlet of the drying bins.

As an alternative of the technical scheme of the invention, the air inlet of the air supply chamber close to the discharge bin is not provided with a heater.

And cold air enters from an air inlet angle box connected with the discharge bin, takes away heat of materials above the air inlet angle box, cools the materials, and hot air with high temperature after cooling enters an air return chamber through the air outlet angle box, enters an air supply chamber through an air duct, is subjected to relay heating, and then is dried by the upper air inlet angle box.

As an alternative solution of the technical solution of the present invention, the drying tower of the present invention further includes:

the air outlet angle boxes are arranged on the upper side of the air outlet angle box, and the air inlet angle boxes are arranged on the lower side of the air outlet angle box;

and the drying sections are formed between the adjacent air outlet angle boxes and the air inlet angle boxes below the air outlet angle boxes.

After the material of stoving section is heated and is dried, enter into the tempering section of below, because there is the moisture difference inside and outside the material at the tempering section, the inside moisture of material is to surface diffusion, and moisture diffuses to the surface after, reentrant the stoving section of below, the operation of drying again, and the circulation in proper order prevents that the material that can be fine like this from exploding the waist.

As an alternative of the technical solution of the present invention, the drying tower of the present invention further includes:

a material conveying device connected with the feeding bin and the discharging bin

The material conveying device comprises:

the discharge end of the hoister is connected with the feeding bin;

and the feed end of the screw conveyor is connected with the discharge bin.

The invention has the beneficial effects that:

(1) The hot air full-recycling energy-saving drying tower provided by the invention has the advantages that air enters from the air inlet of the drying bin connected with the discharge bin, and is sequentially heated along the opposite direction of material conveying, so that the reduced heat of the dried materials is complemented

After measuring, the materials enter an upper drying bin to dry and dehumidify the materials dried above, and each drying bin does not need to be singly used ₅ Exhausting air separately, discharging hot air collected from the air return chamber near one end of the feeding bin, and drying the bin above

The heat of the lower air inlet angle box is fully utilized, and the waste of heat energy is avoided;

(2) The air outlet of the air supply chamber close to one end of the discharge bin is not provided with a heater, and cool air enters from the air inlet of the drying bin close to one end of the discharge bin, so that the heat of materials at the drying bin is taken away, the materials are cooled, and meanwhile, the heat of the materials at the air inlet corner box is fully utilized; ₀ (3) In the invention, the materials enter from the feeding bin and become drier and drier in the process of being discharged from the discharging bin, namely, the moisture of the materials in each drying bin is less and less, so that a humidity difference is generated between the materials above the adjacent air inlet angle boxes.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic structural diagram of an energy-saving drying tower for recycling all hot air in the embodiment of the invention;

FIG. 2 is a schematic structural view of the apparatus of FIG. 1 without the material transfer device;

FIG. 3 is a cross-sectional view of FIG. 1;

fig. 4 is a schematic structural diagram of a single-layer drying bin of an energy-saving drying tower for recycling all hot air in the embodiment of the invention (for clearly showing an internal structure, the upper end and the lower end of an air supply chamber are not closed in the drawing);

FIG. 5 is a schematic structural diagram of an energy-saving drying tower for recycling all hot air in the embodiment of the invention;

FIG. 6 is a schematic view of the single drying chamber in FIG. 5;

fig. 7 is a schematic structural diagram of an air inlet angle box and an air outlet angle box.

Reference numerals:

1-a feeding bin;

2-discharging a bin;

3-air inlet angle box; 301-a first inlet corner box; 302-a second inlet corner box; 303-third inlet corner box; 304-a fourth corner box; 305-a fifth inlet corner box;

4-air outlet angle box; 401-a first air outlet box; 402-a second air outlet corner box; 403-third air outlet corner box; 404-a fourth air outlet angle box; 405-a fifth air outlet corner box;

5-air inlet;

6-air outlet;

7-an air return chamber;

8-an air supply chamber; 801-first blowing chamber; 802-second plenum chamber; 803-third plenum chamber; 804-a fourth air supply chamber; 805-fifth plenum chamber;

9-a heating assembly; 91-a heater; 911-a first heater; 912-a second heater; 913 — a third heater; 914-a fourth heater; 92-a fan; 921 — a first fan; 922-a second fan; 923-a fourth fan; 925-fifth blower;

10-slow threo section;

11-a drying section; 111-first tempering segment; 112-second tempering segment; 113-third tempering segment; 114-fourth chionanthus segment;

12-a material conveying device; 121-a hoist; 122-a screw conveyor;

13-an air duct; 131-a first air duct; 132-a second air duct; 133-a third air duct; 134-fourth air duct.

14-drying the bin; 141-a first drying bin; 142-a second drying bin; 143-a third drying bin; 144-a fourth drying bin; 145-fifth drying bin.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the description of the embodiments, the terms "disposed," "connected," and the like are to be construed broadly unless otherwise explicitly specified or limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; either directly or through an intervening medium, or through internal communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The energy-saving drying tower for recycling all hot air is shown in fig. 1 and 6 and comprises: feeding bin 1, play feed bin 2, air inlet angle box 3, air outlet angle box 4, air intake 5, air outlet 6, return air room 7, supply-air room 8, heating element 9 and a plurality of stoving storehouse 14, wherein: the discharging bin 2 is arranged below the feeding bin 1; the drying bin 14 is arranged between the discharging bin 2 and the feeding bin 1, at least one group of air inlet angle boxes 3 and one group of air outlet angle boxes 4 are arranged in the drying bin 14, and the number of the air inlet angle boxes 3 in each group is a plurality of and is arranged in the drying bin 14 in parallel from top to bottom; the number of each group of air outlet angle boxes 4 is also a plurality of, the air outlet angle boxes are arranged in the drying bins 14 from top to bottom in parallel and are arranged in parallel and alternately with the air inlet angle boxes 3, each drying bin (14) is provided with an air supply chamber 8, the air outlet of the drying bin 14 is connected with an air return chamber 7, and the air return chamber 7 is communicated with the air supply chamber 8 above through an air duct 13. One end of the air inlet angle box 3 is communicated with an air inlet of the drying bin 14, and the other end of the air inlet angle box 3 is of a closed structure; one end of the air outlet angle box 4 is communicated with an air outlet of the drying bin 14, and the other end of the air outlet angle box 4 is of a closed structure; the air return chamber 7 is arranged at one end of an air outlet of the drying bin 14 and is communicated with the air outlet of the drying bin 14; the air supply chamber 8 is arranged at one end of an air inlet of the drying bin 14 and is communicated with the air inlet of the drying bin 14; the heating component 9 is arranged in the air supply chamber 8;

the moisture content of grains before being dried is about 35 percent at most, and the dried hot air has no water at all, so that the hot air is wasted after being discharged at one time.

In order to make the material dispersion area bigger, be convenient for dry, as shown in fig. 7, air outlet angle box 4 is the pentagon box body structure after the below is opened with air inlet angle box 3, dry the air intake and the air outlet of storehouse 14 for with air outlet angle box 4 and air inlet angle box 3 assorted pentagon structure.

In the present embodiment, as shown in fig. 4, the heating unit 9 includes a heater 91 and a fan 92. The heater 91 is arranged at the air outlet of the air supply chamber 8 and used for heating air and then sending the heated air into the air inlet angle box 3, and the fan 92 is arranged at the air inlet of the air supply chamber 8 and used for sending the air of the air outlet angle box into the air supply chamber 8 through the air return chamber 7 and the air duct 10.

In order to make the structure of the drying tower more compact, in this embodiment, the air inlet angle box 3 and the air outlet angle box 4 are disposed at two sides of the air supply chamber 8, and two side walls of the air supply chamber 8 are communicated with the air inlet of the air inlet angle box 3. Dividing the heated hot air into two parts, and drying the materials on the two sides.

In this embodiment, as shown in fig. 5, five drying bins 14 are provided, which are a first drying bin 141, a second drying bin 142, a third drying bin 143, a fourth drying bin 144 and a fifth drying bin 145 from top to bottom in sequence, the feeding bin 1 is connected above the first drying bin 141, and the discharging bin 2 is connected below the fifth drying bin 145.

Two groups of air inlet angle boxes 3 and two groups of air outlet angle boxes 4 are arranged in each drying bin 14, the air inlet angle boxes 3 and the air outlet angle boxes 4 are arranged in parallel and alternately, the air inlet angle boxes 3 are arranged below the air outlet angle boxes 4, and the air inlet angle boxes 3 in the first drying bin 141, the second drying bin 142, the third drying bin 143, the fourth drying bin 144 and the fifth drying bin 145 are respectively a first air inlet angle box 301, a second air inlet angle box 302, a third air inlet angle box 303, a fourth air inlet angle box 304 and a fifth air inlet angle box 305; the air outlet angle boxes 4 in the first drying bin 141, the second drying bin 142, the third drying bin 143, the fourth drying bin 144 and the fifth drying bin 145 are respectively a first air outlet angle box 401, a second air outlet angle box 402, a third air outlet angle box 403, a fourth air outlet angle box 404 and a fifth air outlet angle box 405.

As shown in fig. 2-3, the middle part of each drying bin 14 is connected with an air supply chamber 8, the air outlets of the first air supply chamber 801, the second air supply chamber 802, the third air supply chamber 803, the fourth air supply chamber 804 and the fifth air supply chamber 805 are sequentially arranged from top to bottom, the heaters 91 are arranged at the air outlets of the first air supply chamber 801, the second air supply chamber 802, the third air supply chamber 803 and the fourth air supply chamber 804, the fans 92 are arranged at the air inlets of the first air supply chamber 801, the second air supply chamber 802, the third air supply chamber 803, the fourth air supply chamber 804 and the fifth air supply chamber, and the fans 921, the second fan 922, the third fan 923, the fourth fan 924 and the fifth fan 925 are sequentially arranged, and the two air supply chambers adjacent to each other up and down are independently arranged and are not communicated;

as shown in fig. 2, two sides of each drying bin 14 are respectively connected with an air return chamber 7, the air return chambers 7 are of an integrated hollow structure, so that dust above the air return chambers can fall to the bottommost part conveniently, the air return chambers 7 are respectively connected with a second air supply chamber 802, a third air supply chamber 803, a fourth air supply chamber 804 and a fifth air supply chamber 805 through a first air duct 131, a second air duct 132, a third air duct 133 and a fourth air duct 134, and the upper ends of the air return chambers 7 are communicated with the air outlet 6.

In this embodiment, the space between the adjacent air outlet angle boxes and the upper air inlet angle box is not ventilated, so that a plurality of tempering sections 10 are formed; and a drying section 11 is formed between the adjacent air outlet angle boxes and the air inlet angle box below the air outlet angle boxes.

After the material of stoving section 11 is heated and is dried, enter into the slow soviet section 10 of below, because there is the moisture difference inside and outside the material in slow soviet section 10, the inside moisture of material is to surface diffusion, and moisture diffusion gets into stoving section 11 of below again after the surface, dries the operation again, circulates in proper order, prevents that the material that like this can be fine and explodes the waist.

In addition, as shown in fig. 1, the drying tower of the present invention further includes a material conveying device connected to the feeding bin and the discharging bin, and the material conveying device 12 includes: the discharge end of the hoister 121 is connected with the feeding bin 1; and the feed end of the screw conveyor 122 is connected with the discharging bin 2.

The discharge end of the hoister 121 is connected with the feeding bin 1; screw conveyer 122, its feed end with go out feed bin 2 and be connected, screw conveyer 122's discharge end with store the stoving material and send out the bin connection, of course, according to the stoving demand, screw conveyer 132's discharge end also can be connected with the feed end of lifting machine 121, the stoving that circulates once more.

In the energy-saving drying tower for recycling all hot air in this embodiment, cool dry air enters the fifth air supply chamber 805 under the action of the fifth air blower 925, because no heater is arranged in the fifth air supply chamber 805, the cool dry air enters the fifth air inlet corner box 305 from an air inlet, cools materials at the fifth air inlet corner box 305, so that the heat taken by the cool air is changed into hot air, the hot air enters the fifth air supply corner box 405 from the edge of the fifth air inlet corner box 305, enters the fifth air return chamber 705 from an air outlet of the air supply corner box, enters the fourth air supply chamber 804 through the fourth air duct 134 under the action of the fourth air blower 924, the fourth heater 914 heats the air, the hot air supplemented with the heat enters the fourth air inlet corner box 304 in the fourth drying bin (14) from the air inlet, dries the materials discharged from the fourth air inlet corner box 304, enters the fourth air outlet corner box 404, and the hot air enters the third air supply chamber 133 through the third air duct 133 under the action of the third air blower, the third heater heats all the materials in turn, and finally discharges all the moisture from the third air return chamber 701 to the external air return chamber 701.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization of those skilled in the art; where combinations of features are mutually inconsistent or impractical, such combinations should not be considered as being absent and not within the scope of the claimed invention.

Claims (10)

1. Hot-blast complete recycle energy-conserving drying tower, its characterized in that includes:

a feeding bin (1);

the discharging bin (2) is arranged below the feeding bin (1);

the drying bins (14) are arranged between the feeding bin (1) and the discharging bin (2);

the air inlet (5) is connected with the drying bin (14) close to one end of the discharging bin;

the air outlet (6) is connected with the drying bin (14) close to one end of the feeding bin;

the air return chamber (7) is communicated with an air outlet of the drying bin (14);

the air supply chamber (8) is communicated with an air inlet of the drying bin (14), and the air supply chamber (8) is communicated with the air return chamber (7) through an air duct (13);

and the heating component (9) is arranged in the air supply chamber (8).

2. The energy-saving drying tower for recycling all hot air according to claim 1, wherein each drying bin (14) is provided with at least one group of air inlet angle boxes (3) and one group of air outlet angle boxes (4), one end of each air inlet angle box (3) is communicated with an air inlet of the drying bin (14), the other end of each air inlet angle box is of a closed structure, one end of each air outlet angle box (4) is communicated with an air outlet of the drying bin (14), and the other end of each air outlet angle box is of a closed structure.

3. The hot air recycling energy-saving drying tower according to claim 2, wherein the air outlet angle boxes (4) and the air inlet angle boxes (3) are arranged in parallel and alternately.

4. The energy-saving drying tower for recycling all hot air according to claim 1, wherein the air outlet angle box (4) and the air inlet angle box (3) are both pentagonal box structures with the lower portions opened.

5. The hot air total recycling energy-saving drying tower according to claim 1, wherein the heating assembly (9) comprises a heater (91) and a fan (92).

6. The hot air recycling energy-saving drying tower according to claim 5, wherein the heater (91) is arranged at an air outlet of the air supply chamber (8), and the fan (92) is arranged at an air inlet of the air supply chamber (8).

7. The energy-saving drying tower for recycling all hot air according to claim 1, wherein the drying chamber (14) is arranged at two sides of the air supply chamber (8), and two side walls of the air supply chamber (8) are communicated with an air inlet of the drying chamber (14).

8. The hot air recycling energy-saving drying tower according to claim 1, wherein the heater (91) is not arranged at the air outlet of the air supply chamber (8) close to the discharging bin (2).

9. The energy-saving drying tower for recycling all hot air according to claim 1, further comprising:

the tempering sections (10) are formed between the adjacent air outlet angle boxes (4) and the air inlet angle box (3) above the air outlet angle boxes (4);

and the drying sections (11) are formed between the adjacent air outlet angle boxes (4) and the lower air inlet angle box (3).

10. The energy-saving drying tower for recycling all hot air according to claim 1, further comprising:

and the material conveying device (12) is connected with the feeding bin (1) and the discharging bin (2).

The material conveying device (12) comprises:

the discharge end of the hoister (121) is connected with the feeding bin (1);

and the feed end of the screw conveyor (122) is connected with the discharge bin (2).

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