CN115540576A - Hot air circulating system for drying grains - Google Patents

Abstract

The invention discloses a hot air circulation system for drying grain, which includes a dryer, which includes a grain input part, a drying part and a grain output part connected in sequence, and the drying part includes a plurality of drying modules stacked on each other. The first separating pipe and the second separating pipe in the drying module disperse the falling grain, and output hot air from the air hole for drying; the heat preservation shell covers the outer side of the dryer, and the dryer keeps the inner space of the heat preservation shell It is divided into an air inlet space and an air exhaust space; the hot air generated by the hot air blower passes through the air inlet space, the first partition pipe, the drying space, the second partition pipe, and the exhaust air space in sequence. The present invention disperses the falling grains through a plurality of separating tubes, and outputs hot air through the air holes on the separating tubes, thereby increasing the contact area between the grains and the hot air, thereby accelerating the drying efficiency of the grains; and passing the hot air through multiple separating tubes After being evenly filled into the drying space, it can reduce the damage to the grain caused by the local overheating in the drying space.

Description

A hot air circulation system for drying grain

technical field

The invention relates to a hot air circulation system for drying grain in the technical field of drying equipment.

Background technique

In order to make the grain have better preservation, it is necessary to dry the harvested grain to reduce the moisture in the grain, which can effectively reduce the possible diseases and insect pests caused by the grain storage process. For the centralized drying of large quantities of grain, special grain dryers are often used.

The grain dryer is a tower-shaped grain processing equipment. The grain to be dried is input from the top of the tower. When the grain flows through the preset channel in the tower, hot air is generated through the built-in dryer to improve the air flow in the tower. Speed and temperature, so as to achieve the effect of drying grain. Finally, the dried grains are output from the bottom of the tower.

However, because the grain itself is more sensitive to the drying temperature, too high a temperature is likely to cause damage to the grain, so the current grain dryers use the drying-slowing-drying-slowing conditioning method for low-temperature drying , the ratio is mostly 1:5 (drying for 1 minute, slowing down for 5 minutes), and the area of the drying layer is also a small proportion, and the drying time is longer. Taking a 30-ton dryer as an example, the average drying time for one warehouse is 16-20 hours, the drying efficiency is not high, which affects the grain storage work.

Contents of the invention

The purpose of the present invention is to solve at least one of the technical problems in the prior art, and provide a hot air circulation system for drying grains, which can improve the drying efficiency of grains and reduce possible damage to grains.

According to an embodiment of the present invention, a hot air circulation system for drying grain is provided, comprising:

Dryer, which includes a grain inlet part, a drying part and a grain outlet part, the grain inlet part, the drying part and the grain outlet part are spliced sequentially from top to bottom, and the grain enters from the grain inlet part and Drying through the drying part, and finally discharged from the grain output part, the drying part includes a plurality of drying modules stacked on each other;

The drying module includes a first side plate, a second side plate and a partition pipe, a drying space is formed between the first side plate and the second side plate, and a plurality of The first through hole, the second side plate is provided with a plurality of second through holes, the partition tube is provided with a plurality of air holes, the opening direction of the air holes is at an acute angle with the falling direction of the grain;

The partition tube includes a first partition tube and a second partition tube, one end of the first partition tube communicates with the first through hole, and the other end is welded and sealed with the second side plate; the second partition tube One end of the tube communicates with the second through hole, and the other end is welded and sealed with the first side plate;

The thermal insulation shell covers the outside of the dryer, the dryer divides the inner space of the thermal insulation shell into an air intake space and an air exhaust space, the first side plate faces the air intake space, and the second The two side panels face the air exhaust space; the heat preservation shell is provided with an air inlet and an air exhaust port, the air inlet is connected with the air inlet space, and the air outlet is connected with the air exhaust space;

A hot air blower, which is connected to the air inlet, and the hot air generated by the hot air blower passes through the air intake space, the first partition pipe, the drying space, the second partition pipe, and the exhaust air in sequence. The space is then discharged from the air outlet or returned to the hot air blower through the internal circulation pipeline.

According to an embodiment of the present invention, further, the grain feeding part includes a grain feeding part body and a grain feeding auger, the grain feeding auger is cylindrical and has threads on the side, the grain feeding auger and the grain feeding auger are The main body of the grain section is rotatably connected and driven by a motor to rotate, and is used to drive the grain to move horizontally to enter the drying section.

According to an embodiment of the present invention, further, the grain output part includes a grain output part body and a grain output auger, the grain output auger is cylindrical and has threads on the side, the grain output auger and the grain output auger are The main body of the grain section is rotatably connected and driven by the motor to rotate, and is used to drive the grain to move horizontally so as to be discharged from the grain output section.

According to an embodiment of the present invention, further, the number of the drying parts is two, and the two drying parts are arranged mirror-symmetrically.

According to an embodiment of the present invention, further, the grain feeding part includes a material distributing device, the material distributing device is in the shape of a triangular prism and is installed between the two drying parts, and is used to guide the grain to the two drying parts. the drying section.

According to an embodiment of the present invention, further, the section of the partition pipe is triangular.

According to an embodiment of the present invention, further, the first partition pipes and the second partition pipes are arranged alternately from top to bottom.

According to an embodiment of the present invention, further, the air inlet is arranged at the bottom of the heat preservation shell, and the air exhaust port is arranged at the top of the heat insulation shell.

According to an embodiment of the present invention, further, the hot air blower is arranged at the bottom of the air inlet space and the air outlet direction is upward, and the air inlet is communicated with the hot air blower through an air supply duct.

According to an embodiment of the present invention, further, there are multiple hot air blowers.

The beneficial effects of the embodiments of the present invention at least include: the present invention disperses the falling grains through a plurality of separating pipes, and outputs hot air through the air holes on the separating pipes, increasing the contact area between the grains and the hot air, thereby speeding up the drying of the grains Efficiency; and after the hot air is evenly filled into the drying space through multiple partition tubes, it can reduce the damage to the grain in the drying space due to local overheating.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings that need to be used in the description of the embodiments. Apparently, the described drawings are only some embodiments of the present invention, not all embodiments, and those skilled in the art can obtain other designs and drawings based on these drawings without creative work.

Fig. 1 is the exterior view of the hot air circulation system that is used for drying grain in the embodiment of the present invention;

Fig. 2 is the structural diagram of the hot air circulation system used for drying grain in the embodiment of the present invention after the insulation shell is removed;

Fig. 3 is the structural diagram of the partition pipe in the hot air circulation system used for drying grain in the embodiment of the present invention;

Fig. 4 is a side sectional view of a hot air circulation system for drying grain according to an embodiment of the present invention;

Fig. 5 is the front view of the hot air circulation system for drying grain according to the embodiment of the present invention.

Reference signs: 100-dryer, 200-incoming grain department, 210-incoming grain department body, 220-incoming grain auger, 230-distributing device, 300-drying section, 310-drying module, 320-the first Side plate, 321-first through hole, 330-second side plate, 331-second through hole, 340-dividing tube, 341-air hole, 342-first dividing tube, 343-second dividing tube, 350- Drying space, 400-grain delivery department, 410-grain delivery department body, 420-grain delivery auger, 500-insulation shell, 510-air inlet space, 520-exhaust air space, 530-air inlet, 531-air supply Pipeline, 540-exhaust outlet, 600-hot air blower.

detailed description

This part will describe the specific embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, several means one or more, and multiple means more than two. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number. If the description of the first and second is only for the purpose of distinguishing the technical features, it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features relation.

In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

The embodiment of the present invention provides a hot air circulation system for drying grain. Compared with the traditional grain drying method, the system uses a plurality of partition tubes placed horizontally in the drying space to disperse the falling grain to increase The contact area between food and hot air. And the partition pipe is divided into a first partition pipe and a second partition pipe, the hot air is output from the air holes on the first partition pipe to the drying space, and is discharged from the drying space through the air holes on the second partition pipe, thereby Moisture in the drying space is taken away to improve drying efficiency. The use of this drying method makes the hot air heat source spread in the drying space, which can reduce the damage to the grain caused by the local high temperature.

With reference to Fig. 1, the hot air circulation system for drying grain in the embodiment of the present invention comprises drier 100, thermal insulation shell 500 and hot air blower 600 (referring to Fig. 5), and drier 100 is the hot air circulation system originally used for drying grain The core component is used to dry grain. The heat preservation case 500 covers the outside of the dryer 100 for heat preservation, and the hot air blower 600 is connected with the air inlet 530 on the heat preservation case 500, sucks and heats the outside air and outputs it to the dryer 100 for grain drying.

Referring to Fig. 2, the dryer 100 includes a grain inlet 200, a drying section 300 and a grain outlet 400, wherein the grain inlet 200 is used to introduce grain to be dried, the dryer 300 is used to dry the grain, and the outlet The grain section 400 is used for collecting and discharging the dried grain. The grain-incoming part 200, the drying part 300 and the grain-outgoing part 400 are spliced sequentially from top to bottom, and the grain will move from top to bottom due to gravity. In this embodiment, there are two drying parts 300 and they are arranged symmetrically in mirror images. The grain feeding part 200 includes a material distribution device 230 (refer to FIG. , used to guide the grain into the two drying parts 300 for drying. Grain drying is carried out at the same time through the two drying parts 300, the drying amount of a single drying job is increased, and the drying efficiency is further improved.

Specifically, referring to FIG. 4 , the grain feeding part 200 includes a grain feeding part body 210 and a grain feeding auger 220 , the grain feeding auger 220 is cylindrical and has threads on its outer surface. The main body 210 of the grain feeding part is provided with a grain feeding tank, and the grain feeding auger 220 is rotatably connected to the grain feeding tank. When the grain feeding auger 220 is driven by the motor to rotate, the thread on the grain feeding auger 220 can drive the grain Move in the horizontal direction so as to evenly enter the drying part 300 for drying.

Referring to FIG. 5 , the grain output unit 400 includes a grain output unit body 410 and a grain output auger 420 . The grain output auger 420 is cylindrical and has threads on its outer surface. The main body 410 of the grain output part is provided with a grain output trough, and the grain output auger 420 is rotatably connected to the grain output trough. When the grain output auger 420 is driven by the motor to rotate, the thread on the grain output auger 420 can drive the grain Move in the horizontal direction, so that the grain is collected to the grain discharge port for grain discharge.

The drying part 300 includes a plurality of drying modules 310 stacked on each other, and the single drying capacity and the height of the dryer 100 can be adjusted by increasing or decreasing the number of the drying modules 310, so as to adapt to different requirements of drying work. The drying module 310 includes a first side plate 320, a second side plate 330, and a partition pipe 340. There is a drying space 350 between the first side plate 320 and the second side plate 330, and the partition pipe 340 is placed horizontally on the first side. between the board 320 and the second side board 330 .

Specifically, the first side plate 320 is provided with a plurality of first through holes 321, the second side plate 330 is provided with a plurality of second through holes 331, and the partition tube 340 includes a first partition tube 342 and a second partition tube 343. . One end of the first separating tube 342 communicates with the first through hole 321, and the other end is welded on the second side plate 330 and sealed; one end of the second separating tube 343 communicates with the second through hole 331, and the other end is welded on the first side plate 330. The side plate 320 is mounted and sealed. Thus, only one end of the partition tube 340 is open, while the other end is closed.

Referring to FIG. 3 , the side wall of the separating pipe 340 is provided with a plurality of air holes 341 , and the direction of the air holes 341 is at an acute angle with the falling direction of the grain, thereby preventing grain from entering the inside of the separating pipe 340 from the air holes 341 . The interior of the partition tube 340 is a passage for the hot air to circulate. In some embodiments, the partition tube 340 is cylindrical or prismatic, and has the effect of dispersing grains. In this embodiment, the separating tube 340 is in the shape of a triangular prism with a triangular cross-section, one corner of which is located at the top, so as to reduce the possibility of food staying on the separating tube 340 while scatting grains.

Referring to FIG. 5 , the dryer 100 divides the inner space of the thermal insulation shell 500 into an air inlet space 510 and an air exhaust space 520 , wherein the first side plate 320 in the drying module 310 faces the air inlet space 510 , and the second side plate 330 faces toward the air inlet space 510 . Exhaust space 520. The thermal insulation shell 500 is also provided with an air inlet 530 and an air outlet 540 , the air inlet 530 communicates with the air inlet space 510 , and the air outlet 540 communicates with the exhaust space 520 .

Next, the working principle of the hot air circulation system used for drying grain is introduced: when the hot air blower 600 is started, the hot air generated by it first enters the air intake space 510, and enters through the first through hole 321 on the first side plate 320. in each of the first partition tubes 342 . The hot air is discharged from the air hole 341 of the first partition pipe 342 to increase the temperature in the drying space 350 , and the grains are fully dried in the drying space 350 . The air carrying moisture leaves the drying space 350 through the air hole 341 on the second separating pipe 343, and after being output to the exhaust space 520, it can be discharged to the outside through the air outlet 540, or is re-discharged by the hot air blower 600 through the internal circulation pipe. Absorb and heat up again, so as to realize hot air circulation. Through the flow circulation drying process, while raising the temperature of the drying space and taking away the moisture in the air, the thermal insulation shell 500 can also be used for heat preservation to reduce heat loss and save energy consumed in drying work.

Further, the first partition tubes 342 and the second partition tubes 343 are arranged alternately from top to bottom, and the vertically adjacent first partition tubes 342 and the second partition tubes 343 are staggered from each other so as not to affect the contact with the falling grains.

Further, the air inlet 530 is arranged at the bottom of the heat preservation case 500, and the air outlet 540 is arranged at the top of the heat preservation case 500, so that the air enters from the air inlet 530 and is heated by the hot air blower 600 to become hot air, and the hot air can be heated from bottom to top. Move to exhaust vent 540.

Further, the hot air blower 600 is arranged at the bottom of the air inlet space 510 and the air outlet direction is upward, so as to facilitate hot air to enter each first partition tube 342 . The air inlet 530 communicates with the hot air blower 600 through the air supply duct 531 .

Furthermore, there are multiple hot air blowers 600, and they are arranged side by side at the bottom of the air intake space 510 to improve drying efficiency.

The above is a specific description of the preferred embodiments of the present invention, but the invention is not limited to the described embodiments, those skilled in the art can also make various equivalent modifications or replacements without violating the spirit of the present invention , these equivalent modifications or replacements are all included within the scope defined by the claims of the present application.

Claims (10)

1. A hot air circulating system for drying grain, comprising:

the drying machine comprises a grain inlet part, a drying part and a grain outlet part, wherein the grain inlet part, the drying part and the grain outlet part are sequentially spliced from top to bottom, grains enter from the grain inlet part and are dried by the drying part, and finally are discharged from the grain outlet part, and the drying part comprises a plurality of mutually stacked drying modules;

the drying module comprises a first side plate, a second side plate and a separation pipe, a drying space is formed between the first side plate and the second side plate, a plurality of first through holes are formed in the first side plate, a plurality of second through holes are formed in the second side plate, a plurality of air holes are formed in the separation pipe, and the forming direction of the air holes and the falling direction of grains form an acute included angle;

the separating pipe comprises a first separating pipe and a second separating pipe, one end of the first separating pipe is communicated with the first through hole, and the other end of the first separating pipe is welded and sealed with the second side plate; one end of the second separating pipe is communicated with the second through hole, and the other end of the second separating pipe is welded and sealed with the first side plate;

the dryer divides the inner space of the heat preservation shell into an air inlet space and an air exhaust space, the first side plate faces the air inlet space, and the second side plate faces the air exhaust space; the heat preservation shell is provided with an air inlet and an air outlet, the air inlet is communicated with the air inlet space, and the air outlet is communicated with the air exhaust space;

the hot air fan is connected with the air inlet, and hot air generated by the hot air fan passes through the air inlet space, the first separating pipe, the drying space, the second separating pipe and the air exhaust space in sequence and then is exhausted from the air outlet or returns to the hot air fan through an internal circulation pipeline.

2. The hot air circulation system for drying grain according to claim 1, wherein: go into grain portion including going into grain portion body and going into the grain screw feeder, it is cylindricly and the side is equipped with the screw thread to go into the grain screw feeder, go into the grain screw feeder with go into grain portion body and rotate and be connected and receive motor drive and rotatory for drive grain horizontal direction removes in order to get into drying portion.

3. The hot air circulation system for drying grain according to claim 1, wherein: go out grain portion including going out grain portion body and going out the grain screw feeder, it is cylindricly and the side is equipped with the screw thread to go out the grain screw feeder, go out the grain screw feeder with it rotates to connect and receive motor drive and rotatory to go out grain portion body for drive grain horizontal direction removes in order to follow it discharges to go out grain portion.

4. The hot air circulation system for drying grain according to claim 1, wherein: the drying part is two in number, and two drying part mirror symmetry sets up.

5. The hot air circulation system for drying grain according to claim 4, wherein: the grain feeding part comprises a material distributing device, and the material distributing device is triangular prism-shaped, is arranged between the two drying parts and is used for guiding grains to the two drying parts.

6. The hot air circulation system for drying grain according to claim 1, wherein: the section of the separation pipe is triangular.

7. The hot air circulation system for drying grain according to claim 1, wherein: the first partition pipes and the second partition pipes are alternately arranged from top to bottom.

8. The hot air circulation system for drying grain according to claim 1, wherein: the air inlet set up in the bottom of heat preservation shell, the air exit set up in the top of heat preservation shell.

9. The hot air circulation system for drying grain of claim 8, wherein: the air heater is arranged at the bottom of the air inlet space, the air outlet direction of the air heater is upward, and the air inlet is communicated with the air heater through an air supply pipeline.

10. The hot air circulation system for drying grain of claim 9, wherein: the number of the hot air blowers is multiple.

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