阅读说明：本技术 一种热风回收利用多层烘干线 (Hot air recycling multilayer drying line ) 是由 张培森 于 2018-08-16 设计创作，主要内容包括：本发明公开了一种热风回收利用多层烘干线,包括烘干箱体,烘干箱体中布置有多层上下间隔设置且能将物料由左端传送至右端的左输送带、安装在相邻两个左输送带之间且能将相邻上方的左输送带排出的物料传送至相邻下方的左输送带的左端部的右输送带,烘干箱体的左侧部安装有将右输送带下方流通间隙中的热空气抽入并进行二次加热后再吹入至相邻上方的流通间隙中的左加热鼓风装置；烘干箱体的右侧部安装有将右输送带上方流通间隙中的热空气抽入并进行二次加热后再吹入至相邻上方的流通间隙中的右加热鼓风装置。该烘干线结构简单,能使烘干作业过程中的热风实现多次回收利用,即节约了电力又避免了热能浪费,又提高了烘干效率。(The invention discloses a hot air recycling multilayer drying line, which comprises a drying box body, wherein a plurality of layers of left conveying belts which are arranged at intervals up and down and can convey materials to the right end from the left end and a right conveying belt which is arranged between two adjacent left conveying belts and can convey the materials discharged by the left conveying belts above the adjacent left conveying belts to the left end part of the left conveying belts below the adjacent left conveying belts, and a left heating and blowing device which is used for sucking hot air in a circulation gap below the right conveying belts, heating the hot air for the second time and then blowing the hot air into the circulation gap above the adjacent left conveying belts is arranged at the left side part of the drying box body; and a right heating and blowing device which sucks hot air in the circulation gap above the right conveying belt, heats the hot air for the second time and blows the heated air into the circulation gap above the right conveying belt is arranged at the right side part of the drying box body. The drying line is simple in structure, hot air in the drying operation process can be recycled for multiple times, electric power is saved, heat energy waste is avoided, and drying efficiency is improved.)

1. The utility model provides a hot-blast recycle multilayer stoving line, is equipped with dog-house (1), bottom stoving box (3) that discharge gate (2) including the top, its characterized in that: the drying box body (3) is internally provided with a plurality of layers of left conveying belts (4) which are arranged at intervals up and down and can convey materials to the right end from the left end, and a right conveying belt (5) which is arranged between two adjacent left conveying belts (4) and can convey the materials discharged by the left conveying belts (4) above the adjacent left conveying belts (4) to the left end part of the left conveying belts (4) below the adjacent left conveying belts (5), wherein circulation gaps (6) for conveying the materials and circulation air flow are respectively formed between the left conveying belt (4) at the top and the top wall of the drying box body (3) and between the left conveying belt (4) and the adjacent right conveying belt (5), and a left heating and blowing device for sucking hot air in the circulation gap (6) below the right conveying belt (5) into the circulation gap (6) above the adjacent right conveying belt (5) and blowing the hot air; and a right heating and blowing device which is used for sucking hot air in the circulation gap (6) above the right conveyor belt (5), carrying out secondary heating and then blowing the hot air into the circulation gap (6) above the right conveyor belt is arranged at the right side part of the drying box body (3).

2. The hot air recycling multilayer drying line according to claim 1, wherein right openings are arranged on the right wall of the drying box body (3) and between the top wall of the drying box body (3) and the adjacent right conveyor belt (5) and between the two adjacent right conveyor belts (5), respectively, a right air deflector (11) which divides the right opening into a right air outlet (9) and a right air suction opening (10) from top to bottom is arranged in the right opening, the right air outlet (9) corresponds to the circulation gap (6) above the left conveyor belt (4), and the right air suction opening (10) corresponds to the circulation gap (6) below the left conveyor belt (4); the right heating and air blowing device comprises a right heat exchange plate (7) and a right fan (8), wherein the right heat exchange plate (7) is installed on the right box wall of the drying box body (3) and is respectively plugged at a right opening, the right fan (8) is installed on the outer side of the right heat exchange plate (7), an air suction opening of the right fan (8) is arranged corresponding to a right air suction opening (10), and an air outlet is arranged corresponding to a right air outlet (9); the right side part of the right air deflector (11) is in sealing contact with the right heat exchange plate (7), and the left side part of the right air deflector extends leftwards to the upper part of the left conveying belt (4).

3. The hot air recycling multi-layer drying line according to claim 2, wherein the gap between the right air deflector (11) and the left conveyor belt (4) is consistent with the thickness of the material scattered on the left conveyor belt (4).

4. The hot air recycling multi-layer drying line according to claim 2, wherein the lower side portion of the right air suction opening (10) is connected with a right guide plate (12) extending obliquely to the lower left, and the left end portion of the right guide plate (12) extends to the lower side of the adjacent left conveying belt (4) and is arranged close to the top surface of the adjacent right conveying belt (5).

5. The hot air recycling multi-layer drying line according to claim 2, wherein the front-back width of the right opening is consistent with the front-back width of the left conveyor belt (4) or the right conveyor belt (5), and the right fan (8) is a cross flow fan.

6. The hot air recycling multilayer drying line according to claim 1, wherein a left opening is arranged on the left wall of the drying box body (3) and is respectively positioned between two adjacent left conveying belts (4), a left air deflector (17) which divides the left opening into a left air outlet (15) and a left air suction opening (16) from top to bottom is arranged in the left opening, the left air outlet (15) corresponds to the circulation gap (6) above the right conveying belt (5), and the left air suction opening (16) corresponds to the circulation gap (6) below the right conveying belt (5); the left heating and air blowing device comprises a left heat exchange plate (13) and a left fan (14), wherein the left heat exchange plate (13) is arranged on the left box wall of the drying box body (3) and is respectively blocked at a left opening, the left fan (14) is arranged on the outer side of the left heat exchange plate (13), an air suction opening of the left fan (14) is arranged corresponding to a left air suction opening (16), and an air outlet is arranged corresponding to a left air outlet (15); the left side part of the left air deflector (17) is in sealing contact with the left heat exchange plate (13), and the right side part of the left air deflector extends rightwards to the upper part of the right conveying belt (5).

7. The hot air recycling multi-layer drying line according to claim 5, wherein the gap between the left air deflector (17) and the right conveyor belt (5) is consistent with the thickness of the material scattered on the right conveyor belt (5).

8. The hot air recycling multi-layer drying line according to claim 5, wherein the lower side portion of the left air inlet (16) is connected with a left air deflector (18) extending obliquely to the lower right, and the right end portion of the left air deflector (18) extends to the lower side of the adjacent right conveyor belt (5) and is arranged close to the top surface of the lower adjacent left conveyor belt (4).

9. The hot air recycling multi-layer drying line according to claim 5, wherein the front-back width of the left opening is consistent with the front-back width of the left conveying belt (4) or the right conveying belt (5), and the left fan (14) is a cross flow fan.

10. The hot air recycling multi-layer drying line according to any one of claims 1 to 9, wherein the discharge port (2) is arranged at the lower side part of the right box wall of the drying box body (3), and the right end part of the left conveying belt (4) at the lowest layer extends out of the discharge port (2).

Technical Field

The invention relates to a hot air recycling multilayer drying line.

Background

At present, the common structure of the existing multilayer belt type dryer comprises a drying box body, a plurality of layers of conveying belts are arranged in the drying box body, the conveying belts are arranged at intervals from top to bottom, the conveying belts are screen type conveying belts, and the drying work is completed by two modes of horizontal blowing and vertical blowing.

However, in the current horizontal blowing drying mode, an axial flow fan or a centrifugal fan is used for blowing air to the other side from the direction of the mesh belt discharge port, and hot air is only used once in the drying mode, so that heat loss is too much, and the effects of energy conservation and emission reduction cannot be achieved; and the vertical blowing drying mode, if the number of the conveying belt layers in the drying equipment is more, the objects to be dried on all the conveying belt layers can be blown through by very large wind power, and more energy and electric power are wasted.

Disclosure of Invention

The invention aims to solve the technical problem of providing a hot air recycling multilayer drying line which has a simple structure, can realize repeated recycling of hot air in the drying operation process, and can realize repeated rotation and repeated relay heating of the hot air, thereby saving electric power, avoiding waste of heat energy and improving drying efficiency.

In order to solve the technical problem, the invention comprises a drying box body with a feeding port at the top and a discharging port at the bottom, and is characterized in that: the drying box body is internally provided with a plurality of layers of left conveying belts which are arranged at intervals up and down and can convey materials to the right end from the left end, and a right conveying belt which is arranged between two adjacent left conveying belts and can convey the materials discharged by the left conveying belts above the adjacent left conveying belts to the left end part of the left conveying belts below the adjacent left conveying belts, wherein circulation gaps for conveying the materials and circulating air flow are respectively formed between the left conveying belt at the top and the top wall of the drying box body and between the left conveying belt and the adjacent right conveying belt, and the left side part of the drying box body is provided with a left heating and blowing device which is used for sucking hot air in the circulation gap below the right conveying belt, carrying out secondary heating and then; and the right side part of the drying box body is provided with a right heating and blowing device which sucks hot air in the circulation gap above the right conveying belt, heats the hot air for the second time and blows the heated air into the circulation gap above the right conveying belt.

After the structure is adopted, fresh materials are put in from the feeding port, sequentially pass through the left conveying belt and the right conveying belt below, and are discharged from the discharging port, so that the drying operation is realized; in the drying process, due to the arrangement effect of the right heating and blowing device and the left heating and blowing device, the left heating and blowing device can suck hot air in the circulation gap below the right conveying belt, perform secondary heating and blow the hot air into the circulation gap above the right conveying belt, and the right heating and blowing device above the right conveying belt can suck hot air in the circulation gap above the right conveying belt, perform secondary heating and blow the hot air into the circulation gap above the right conveying belt, so that the drying operation of the materials is realized, and meanwhile, the drying operation of the materials by hot air for multiple times of circulation heating can be realized, thereby saving electric energy and reducing loss; secondly, after the hot air is heated in a relay mode for multiple times and reaches the feeding port at the top, the more the moisture in the hot air is accumulated, the value is not utilized, and therefore the hot air is directly discharged to the outside of a workshop from the feeding port.

In order to realize the blowing, air suction and heating structure of the right heating and air blowing device, right openings which are positioned between the top wall of the drying box body and the adjacent right conveying belts and between the two adjacent right conveying belts respectively are arranged on the right box wall of the drying box body, a right air deflector which divides the right opening into a right air outlet and a right air suction opening from top to bottom is arranged in the right opening, the right air outlet corresponds to a circulation gap above the left conveying belt, and the right air suction opening corresponds to a circulation gap below the left conveying belt; the right heating and air blowing device comprises a right heat exchange plate and a right fan, the right heat exchange plate is mounted on the right box wall of the drying box body and is sealed at a right opening, the right fan is mounted on the outer side of the right heat exchange plate, an air suction opening of the right fan is arranged corresponding to a right air suction opening, and an air outlet is arranged corresponding to a right air outlet; the right side part of the right air deflector is in sealing contact with the right heat exchange plate, and the left side part of the right air deflector extends leftwards to the upper part of the left conveying belt.

In order to avoid that hot air in the circulation gap above the left conveying belt flows back to the right air suction opening adjacent to the right side, the gap between the right air deflector and the left conveying belt is consistent with the thickness of the material scattered on the left conveying belt.

In order to smoothly guide materials discharged from the left conveying belt to the right conveying belt on the adjacent lower side, the lower side part of the right air suction opening is connected with a right material guide plate which obliquely extends towards the left lower side, and the left end part of the right material guide plate extends to the lower part of the adjacent left conveying belt and is close to the top surface of the adjacent right conveying belt below.

The front and back width of the right opening is consistent with the front and back width of the left conveying belt or the right conveying belt, and the right fan is a cross flow fan.

In order to realize the blowing, air suction and heating structure of the left heating and air blowing device, a left opening which is respectively positioned between two adjacent left conveying belts is arranged on the left box wall of the drying box body, a left air deflector which divides the left opening into a left air outlet and a left air suction opening from top to bottom is arranged in the left opening, the left air outlet corresponds to a circulation gap above the right conveying belt, and the left air suction opening corresponds to a circulation gap below the right conveying belt; the left heating and blowing device comprises a left heat exchange plate and a left fan, the left heat exchange plate is mounted on the left box wall of the drying box body and is blocked at a left opening, the left fan is mounted on the outer side of the left heat exchange plate, an air suction opening of the left fan is arranged corresponding to a left air suction opening, and an air outlet is arranged corresponding to a left air outlet; the left side part of the left air deflector is in sealing contact with the left heat exchange sheet, and the right side part of the left air deflector extends rightwards to the upper part of the right conveying belt.

In order to avoid that hot air in the circulation gap above the right conveying belt flows back to the left adjacent air suction opening on the left side, the gap between the left air deflector and the right conveying belt is consistent with the thickness of the material scattered on the right conveying belt.

In order to smoothly guide materials discharged from the right conveying belt to the left conveying belt on the adjacent lower side, the lower side part of the left air suction opening is connected with a left material guide plate which obliquely extends towards the lower right side, and the right end part of the left material guide plate extends to the lower side of the adjacent right conveying belt and is close to the top surface of the adjacent left conveying belt below.

The front and back width of the left opening is consistent with the front and back width of the left conveying belt or the right conveying belt, and the left fan is a cross flow fan.

The discharge gate sets up lateral part under the right tank wall of stoving box, and the right-hand member portion of the left conveyer belt of lower floor stretches out from the discharge gate.

In conclusion, the hot air drying device is simple in structure, hot air in the drying operation process can be recycled for multiple times, the hot air is rotated for multiple times and is heated in a relay mode, power is saved, heat energy waste is avoided, and meanwhile the drying efficiency is improved.

Drawings

The invention is described in further detail below with reference to the following figures and detailed description:

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic diagram of the structure of FIG. 1 without reference numbers.

Detailed Description

Referring to the attached drawings, the hot air recycling multi-layer drying line comprises a drying box body 3, wherein a feeding port 1 is formed in the top of the drying box body 3, a discharging port 2 is formed in the bottom of the drying box body, the drying box body 3 is preferably a cuboid-shaped sealed box body, meanwhile, a hopper corresponding to and communicated with the feeding port 1 is arranged on the left side of the top of the sealed box body, and the discharging port 2 is formed in the lower side portion of the right box wall of the sealed box body; in order to dry the materials, a plurality of layers of left conveying belts 4 which are arranged at intervals up and down and can convey the materials from the left end to the right end, and a right conveying belt 5 which is arranged between two adjacent left conveying belts 4 and can convey the materials discharged by the left conveying belt 4 above the adjacent left conveying belt to the left end of the left conveying belt 4 below the adjacent left conveying belt are arranged in the drying box body 3, the left conveying belts 4 and the right conveying belt 5 are preferably screen type conveying belts, meanwhile, the total layer number of the left conveying belts 4 and the right conveying belts 5 is usually the layer number with odd number, as shown in fig. 1, the total layer number of the left conveying belts 4 and the right conveying belts 5 is 5 layers, meanwhile, in order to facilitate the materials to fall from the left conveying belts 4 to the right conveying belts 5 of the adjacent lower layers and to facilitate the falling of the materials from the right conveying belts 5 to the left conveying belts 4 of the adjacent lower layers, while the right end of the right conveyor belt 5 normally extends to the right beyond the upper adjacent left conveyor belt 4 by a distance, of course, the right end of the lowermost left conveyor belt 4 preferably extends from the discharge port 2 to the outside of the drying box 3, thereby facilitating the discharge of the dried material.

Continuing to refer to the attached drawings, a circulation gap 6 for conveying materials and circulating air flow is respectively formed between the uppermost left conveying belt 4 and the top wall of the drying box body 3 and between the left conveying belt 4 and the adjacent right conveying belt 5, the vertical distance of the circulation gap 6 is set according to actual requirements, and then a left heating and blowing device for sucking hot air in the circulation gap 6 below the right conveying belt 5, carrying out secondary heating and then blowing the hot air into the circulation gap 6 above the adjacent right conveying belt is installed at the left side part of the drying box body 3; and the right side part of the drying box body 3 is provided with a right heating and blowing device which sucks hot air in the circulation gap 6 above the right conveyor belt 5, heats the hot air for the second time and blows the heated air into the circulation gap 6 above the right conveyor belt. Therefore, when fresh materials are fed from the feeding port 1, sequentially pass through the left conveying belt 4 and the right conveying belt 5 below, and are discharged from the discharging port 2, and therefore drying operation is achieved; in the drying process, the right heating and blowing device and the left heating and blowing device are arranged to act, so that the left heating and blowing device can suck hot air in the circulation gap 6 below the right conveying belt 5, perform secondary heating and blow the hot air into the circulation gap 6 above the right conveying belt, and the right heating and blowing device above the right conveying belt 5 can suck the hot air in the circulation gap 6 above the right conveying belt 5, perform secondary heating and blow the hot air into the circulation gap 6 above the right conveying belt, so that the drying operation of the material is realized, and meanwhile, the material drying operation can be performed by hot air multiple times of circulation heating, thereby saving electric energy and reducing heat loss; secondly, after the hot air is heated in a relay mode for multiple times and reaches the feeding port 1 at the top, the more moisture in the hot air is accumulated, the value is not utilized, and therefore the hot air is directly discharged from the feeding port 1 to the outside of a workshop.

As shown in FIG. 1, in order to realize the blowing, sucking and heating structure of the right heating blower device, right openings are provided on the right wall of the drying box 3 between the top wall of the drying box 3 and the adjacent right conveyor belts 5 and between the two adjacent right conveyor belts 5, respectively, the front-back width of the right opening is preferably consistent with the front-back width of the left conveyor belt 4 or the right conveyor belt 5, secondly, a right air deflector 11 which divides the right opening into a right air outlet 9 and a right air suction opening 10 from top to bottom is arranged in the right opening, the right air deflector 11 is preferably a flat plate horizontally arranged, meanwhile, the front side and the rear side of the right air deflector 11 are respectively connected with the corresponding front side wall or the rear side wall of the drying box body 3, in addition, the right air outlet 9 corresponds to the circulation gap 6 above the left conveyor belt 4, and the right air inlet 10 corresponds to the circulation gap 6 below the left conveyor belt 4; in addition, the right heating and blowing device comprises a right heat exchange fin 7 and a right fan 8, wherein the right heat exchange fin 7 is installed on the right box wall of the drying box body 3 and is respectively blocked at the outer side of each right opening, the right fan 8 is installed at the outer side of the right heat exchange fin 7, and the right fan 8 is preferably a cross flow fan; meanwhile, the air suction opening of the right fan 8 is arranged corresponding to the right air suction opening 10, and the air exhaust opening is arranged corresponding to the right air outlet 9, so that the right fan 8 can suck hot air in the circulation gap 6 above the right conveying belt 5 at the lower left and then blow the hot air into the circulation gap 6 at the upper adjacent part after heating, and meanwhile, in the process of sucking and exhausting the hot air by the right fan 8, the hot air passes through the heat exchange sheet twice, so that the heating temperature of the hot air can be improved; in addition, in order to fully suck the hot air in the lower-layer circulation gap 6 into the right fan 8 and fully blow the hot air into the upper-layer circulation gap 6, the right side part of the right air deflector 11 is in sealing contact with the right heat exchange sheet 7, and the left side part of the right air deflector extends to the left for a distance above the left conveying belt 4; in addition, in order to avoid that the hot air in the circulation gap 6 above the left conveying belt 4 flows back to the right suction opening 10 adjacent to the right side, the gap between the right air deflector 11 and the left conveying belt 4 is consistent with the thickness of the material scattered on the left conveying belt 4, namely, the right air deflector 11 is contacted with the top surface of the material on the left conveying belt 4, therefore, the gap between the right air deflector 11 and the left conveying belt 4 is blocked by the material, and the hot air can be prevented from flowing back.

Secondly, in order to smoothly guide the material discharged from the left conveying belt 4 to the right conveying belt 5 adjacent to the lower side, the lower side portion of the right air suction opening 10 is connected to a right guide plate 12 extending obliquely to the left lower side, of course, it is also preferable that the front side edge and the rear side edge of the right guide plate 12 are respectively connected to the front side wall or the rear side wall corresponding to the drying box 3, and meanwhile, the left end portion of the right guide plate 12 extends to a distance below the adjacent left conveying belt 4 and is disposed close to the top surface of the right conveying belt 5 adjacent to the lower side.

As shown in fig. 1, in order to realize the blowing, air sucking and heating structure of the left heating and air blowing device, a left opening is arranged on the left box wall of the drying box body 3 and is respectively positioned between two adjacent left conveying belts 4, the front and back width of the left opening is preferably consistent with the front and back width of the left conveying belt 4 or the right conveying belt 5, a left air deflector 17 for dividing the left opening into a left air outlet 15 and a left air suction inlet 16 from top to bottom is arranged in the left opening, the left air deflector 17 is preferably a flat plate which is horizontally arranged, and meanwhile, the front side edge and the back side edge of the left air deflector 17 are respectively connected to the corresponding front side wall or the back side wall of the drying box body 3; in addition, the left air outlet 15 corresponds to the circulation gap 6 above the right conveyor belt 5, and the left air suction opening 16 preferably corresponds to the circulation gap 6 below the right conveyor belt 5; in addition, the left heating and blowing device comprises a left heat exchange fin 13 and a left fan 14, wherein the left heat exchange fin 13 is arranged on the outer side of the left box wall of the drying box body 3 and is respectively blocked on the outer side of each left opening, and the left fan 14 is arranged on the outer side of the left heat exchange fin 13, and the left fan 14 is preferably a cross flow fan; meanwhile, the air suction opening of the left fan 14 is arranged corresponding to the left air suction opening 16, and the air exhaust opening is arranged corresponding to the left air outlet 15, so that the left fan 14 can suck hot air in the circulation gap 6 below the adjacent right conveying belt 5, heat the hot air and blow the heated air into the circulation gap 6 above the adjacent right conveying belt, and meanwhile, in the process of sucking and exhausting the hot air, the hot air passes through the heat exchange sheets twice, so that the heating temperature of the hot air can be improved; in addition, in order to fully suck the hot air in the lower-layer circulation gap 6 into the left fan and fully blow the hot air into the upper-layer circulation gap 6, the left side part of the left air deflector 17 is in sealing contact with the left heat exchange sheet 13, and the right side part extends to the right to a distance above the right conveying belt 5; in addition, in order to avoid that the hot air in the circulation gap 6 above the right conveying belt 5 flows back to the left adjacent air suction opening 16 on the left side, the gap between the left air deflector 17 and the right conveying belt 5 is consistent with the thickness of the material scattered on the right conveying belt 5, namely, the left air deflector 17 is contacted with the top surface of the material on the right conveying belt 5, therefore, the gap between the left air deflector 17 and the right conveying belt 5 is blocked by the material, and the hot air can be prevented from flowing back.

In order to smoothly guide the material discharged from the right conveyor belt 5 to the adjacent lower left conveyor belt 4, the lower side portion of the left air suction opening 16 is connected to the left air deflector 18 extending obliquely to the right lower side, and it is also preferable that the front side edge and the rear side edge of the left air deflector 18 are respectively connected to the front side wall or the rear side wall corresponding to the drying box 3, and meanwhile, the right end portion of the left air deflector 18 extends to a distance below the adjacent right conveyor belt 5 and is disposed close to the top surface of the adjacent lower left conveyor belt 4.

In summary, the present invention is not limited to the above-described embodiments. Those skilled in the art can make several changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications should fall within the scope of the present invention.