Mixed-flow grain dryer
By setting up staggered air inlet angle-shaped boxes and air outlet angle-shaped boxes in the drying layer of the grain dryer, a mixed flow effect is formed, and the problems of low grain drying efficiency and high crushing rate in the existing technology are solved, and high efficiency and low crushing grain drying effect is achieved.
Patent Information
- Application Number
- CN202422052081.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-22
AI Technical Summary
In existing grain dryers, the direction of movement of grain and the direction of flow of hot air are perpendicular to each other, resulting in few contact surfaces between hot air and grain, low drying efficiency, and multiple transfers and drying are required, resulting in high grain crushing rate.
A mixed flow grain dryer is designed. By setting up an interlaced air inlet angle-shaped box and an air outlet angle-shaped box in the drying layer, a mixed flow effect is formed, so that the grain flows downward in a snake-shaped manner, and the hot air flow is directly in contact with the grain for mixed flow drying.
It greatly improves drying efficiency, reduces the number of grain operation and crushing rate, and ensures the quality of grain after drying.
Smart Images
Figure CN223036820U_ABST
Abstract
Description
Technical Field:
[0001] The utility model belongs to the technical field of grain drying equipment, and particularly refers to a mixed-flow grain dryer. Background Art:
[0002] Since the moisture content in grains directly affects the storage, transportation, and processing of grains, it is necessary to make the grains reach the required moisture content. Especially newly harvested grains have a high moisture content and are extremely prone to mildew. Grains must undergo drying and moisture reduction treatment before warehousing and long-distance transportation.
[0003] The Chinese utility model patent (authorized announcement number CN215028994 U, application date June 8, 2021, announcement date December 7, 2021) discloses a grain dryer, which includes a drying box body, a hot air blower, and an exhaust fan. The drying box body includes an air inlet on one side and an air outlet on the other side. The hot air blower is arranged on one side of the drying box body, and the hot air blower is connected to the air inlet. The hot air blower includes a hot air box and an induced draft fan. One end of the induced draft fan is connected to the air inlet, and the other end of the induced draft fan is provided with the hot air box. The hot air box is provided with at least one graphene heating sheet. The exhaust fan is arranged on the other side of the drying box body, and the exhaust fan is connected to the air outlet. The hot air box heats the air, and the hot air flows from the air inlet of the drying box body to the air outlet of the drying box body under the suction of the exhaust fan. The grains in the drying box body move downward through the drying layer and are dried by the hot air. The grains reaching the bottom of the drying box body enter the elevator through the discharge port and are transferred to the feeding port of the drying box body by the elevator, so that the grains in the drying box body can move circularly and be dried multiple times.
[0004] During the drying process of the above-mentioned grain dryer, the moving direction of the grains is perpendicular to the flowing direction of the hot air. The contact surface between the hot air and the grains is small, resulting in a low drying efficiency. Therefore, multiple transfers and drying are required to achieve the drying effect, and the grain breakage rate is high. Summary of the Invention:
[0005] The purpose of the utility model is to provide a mixed-flow grain dryer that improves the drying efficiency and reduces the grain breakage rate.
[0006] The utility model is realized as follows:
[0007] A mixed-flow grain dryer, comprising a dryer main body, in which a tempering layer, at least one drying layer and a grain discharging layer are arranged. The drying layer includes air inlet angled boxes and air outlet angled boxes which are spaced and staggered from top to bottom. The upper ends of the air inlet angled boxes and air outlet angled boxes are sharp corners, and both sides of the sharp corners are flow guide plates. One end of the air inlet angled box and the air outlet angled box is a large opening end, and the other end is a small opening end. An installation flange is arranged at the large opening end, and a sealing plate is arranged at the small opening end. The large opening end of the air inlet angled box is connected to the first installation side plate of the drying layer through the installation flange. An air inlet hole with the same shape as the large opening end of the air inlet angled box is arranged on the first installation side plate. The small opening end of the air inlet angled box is connected to the second installation side plate through the sealing plate. The large opening end of the air outlet angled box is connected to the second installation side plate through the installation flange. An air outlet hole with the same shape as the large opening end of the air outlet angled box is arranged on the second installation side plate. The small opening end of the air outlet angled box is connected to the first installation side plate through the sealing plate. An air inlet hood is arranged on one side of the first installation side plate, and the air inlet hood is connected to a burner. An air outlet hood is arranged on one side of the second installation side plate, and the air outlet hood is connected to a fan.
[0008] In the above-mentioned mixed-flow grain dryer, the air inlet angled box and the air outlet angled box include a first flow guide plate and a second flow guide plate in an "Λ" shape. The lower parts of the first flow guide plate and the second flow guide plate are open. One end of the first flow guide plate and the second flow guide plate is bent towards the center to form a first baffle and a second baffle. The first flow guide plate, the second flow guide plate, the first baffle and the second baffle form the large opening end. The other ends of the first flow guide plate and the second flow guide plate form the small opening end. Installation flanges are arranged on the first flow guide plate, the second flow guide plate, the first baffle and the second baffle.
[0009] In the above-mentioned mixed-flow grain dryer, first strengthening members and second strengthening members are arranged along the length direction on the inner walls of the first flow guide plate and the second flow guide plate. Both ends of the cross bar are respectively connected to the first strengthening member and the second strengthening member.
[0010] In the above-mentioned mixed-flow grain dryer, an "Λ" shaped angle plate is arranged on the top of the first flow guide plate and the second flow guide plate.
[0011] In the above-mentioned mixed-flow grain dryer, grain baffle plates are arranged below the air inlet holes of the first installation side plate and the air outlet holes of the second installation side plate.
[0012] In the above-mentioned mixed-flow grain dryer, there are two drying layers arranged up and down.
[0013] In the above-mentioned mixed-flow grain dryer, the grain discharging layer includes a grain discharging container located below the drying layer. A grain shunting plate in the shape of "Λ" is arranged at the inlet end of the grain discharging container. A grain discharging wheel is arranged between adjacent grain shunting plates. A conveyor belt is arranged below the outlet end of the grain discharging container. The conveyor belt is connected to the inlet of a hoist, and the outlet of the hoist is connected to the inlet of the grain storage layer.
[0014] The prominent advantages of the present utility model compared with the prior art are as follows:
[0015] 1. The present utility model forms a mixed flow through the inlet air angled box, the outlet air angled box, the burner and the fan, and the inlet air angled box and the outlet air angled box are spaced and staggered, so that the grains flow downward in a snake shape, and the hot air flow directly contacts the grains for mixed-flow drying, greatly improving the drying efficiency, reducing the number of grain transfers, reducing the grain breakage rate, and the quality of the dried grains is good.
[0016] 2. The grain shunting plate and the grain discharging wheel of the present utility model can evenly shunt the grains, ensuring that the grains enter the conveyor belt from the outlet end of the grain discharging cavity in an orderly manner, making the grain transfer more uniform. Description of the drawings:
[0017] Figure 1 is one of the three-dimensional schematic diagrams of the present utility model;
[0018] Figure 2 is the second three-dimensional schematic diagram of the present utility model;
[0019] Figure 3 is the schematic diagram after the inlet air hood is disassembled of the present utility model;
[0020] Figure 4 is Figure 3 the partial enlarged schematic diagram of;
[0021] Figure 5 is the schematic diagram after the inlet air hood and the first installation side plate are disassembled of the present utility model;
[0022] Figure 6 is Figure 5 the partial enlarged schematic diagram of;
[0023] Figure 7 is the top view of the present utility model;
[0024] Figure 8 is Figure 7 the A-A cross-sectional view of;
[0025] Figure 9 is Figure 8 the partial enlarged schematic diagram of;
[0026] Figure 10It is one of the schematic diagrams of the air inlet angled box or the air outlet angled box of the present utility model;
[0027] Figure 11 It is the second schematic diagram of the air inlet angled box or the air outlet angled box of the present utility model.
[0028] In the figure: 1, dryer main body; 2, tempering layer; 3, drying layer; 4, grain discharging layer; 5, air inlet angled box; 6, air outlet angled box; 7, mounting flange; 8, sealing plate; 9, first mounting side plate; 10, air inlet hole; 11, air inlet hood; 12, burner; 13, air outlet hood; 14, fan; 15, first deflector; 16, second deflector; 17, first baffle; 18, second baffle; 19, first reinforcing member; 20, second reinforcing member; 21, cross bar; 22, angle plate; 23, grain retaining plate; 24, sliding plate; 25, grain shunting plate; 26, grain discharging wheel; 27, conveyor belt; 28, elevator. Specific embodiments:
[0029] The following further describes the present utility model with specific embodiments. Refer to Figure 1 —11:
[0030] The present utility model provides a mixed-flow grain dryer, which includes a dryer main body 1. A tempering layer 2, at least one drying layer 3 and a grain discharging layer 4 are arranged in the dryer main body 1. Generally, the tempering layer 2 is a square bin structure. The drying layer 3 includes air inlet angled boxes 5 and air outlet angled boxes 6 that are spaced and staggered from top to bottom. The upper ends of the air inlet angled boxes 5 and the air outlet angled boxes 6 are sharp corners, and both sides of the sharp corners are deflectors. The lower ends of the deflectors are open ends. One end of the air inlet angled boxes 5 and the air outlet angled boxes 6 is a large end, and the other end is a small end. A mounting flange 7 is provided at the large end, and a sealing plate 8 is provided at the small end. The large end of the air inlet angled box 5 is connected to the first mounting side plate 9 of the drying layer 3 through the mounting flange 7. An air inlet hole 10 having the same shape as the large end of the air inlet angled box 5 is provided on the first mounting side plate 9. The small end of the air inlet angled box 5 is connected to the second mounting side plate through the sealing plate 8. The large end of the air outlet angled box 6 is connected to the second mounting side plate through the mounting flange. An air outlet hole having the same shape as the large end of the air outlet angled box 6 is provided on the second mounting side plate. The small end of the air outlet angled box 6 is connected to the first mounting side 9 plate. An air inlet hood 11 is provided on one side of the first mounting side plate 9. The air inlet hood 11 is communicated with all the air inlet holes 10 and is connected to the burner 12. An air outlet hood 13 is provided on one side of the second mounting side plate. The air outlet hood 13 is communicated with all the air outlet holes and is connected to the fan 14.
[0031] In this utility model, by providing an air inlet angled box 5 and an air outlet angled box 6, the hot air flow generated by the burner 12 enters the inner cavity of the air inlet angled box 5 through the air inlet hood 11 and the air inlet holes 10, and is discharged into the inner cavity of the drying layer 3 through the open end. The grains enter the drying layer 3 from the tempering layer 2 and flow downward in a snake shape under the action of the air inlet angled box 5 and the air outlet angled box 6. The hot air flow will dry the grains in the drying layer 3, and the fan 14 operates to draw air in the drying layer 3. The hot air flow is discharged outward through the inner cavity of the air outlet angled box 6, the air outlet holes, the air outlet hood 13, and the fan 14. During the drying process, the hot air flow in the drying layer 3 can directly contact the grains to perform mixed-flow drying on the grains, greatly improving the drying efficiency. At the same time, it can reduce the number of grain rotations, thereby reducing the grain breakage rate.
[0032] Furthermore, the air inlet angled box 5 and the air outlet angled box 6 include a first guide plate 15 and a second guide plate 16 in an "Λ" shape. The lower parts of the first guide plate 15 and the second guide plate 16 are open, and one end of the first guide plate 15 and the second guide plate 16 is bent towards the center to form a first baffle 17 and a second baffle 18. The first guide plate 15, the second guide plate 16, the first baffle 17, and the second baffle 18 form a large-mouth end, and the other end of the first guide plate 15 and the second guide plate 16 forms a small-mouth end. Mounting flanges 7 are provided on the first guide plate 15, the second guide plate 16, the first baffle 17, and the second baffle 18.
[0033] The setting of the first baffle 17 and the second baffle 18 can further improve the guiding effect, prevent too many grains from entering the inner cavities of the air inlet angled box 5 and the air outlet angled box 6, and facilitate the flow of the hot air flow.
[0034] Since the grains flow between the air inlet angled box 5 and the air outlet angled box 6, it will exert pressure on the air inlet angled box 5 and the air outlet angled box 6. Therefore, the air inlet angled box 5 and the air outlet angled box 6 have certain strength requirements. In this utility model, in order to increase the strength of the air inlet angled box 5 and the air outlet angled box 6, first strengthening members 19 and second strengthening members 20 are arranged along the length direction on the inner walls of the first guide plate 15 and the second guide plate 16, and both ends of the cross bar 21 are respectively connected to the first strengthening member 19 and the second strengthening member 20.
[0035] Generally speaking, the first strengthening members 19 and the second strengthening members 20 are welded to the first guide plate 15 and the second guide plate 16. Similarly, both ends of the cross bar 21 are also welded to the first strengthening member 19 and the second strengthening member 20.
[0036] It should be noted that the first strengthening members 19 and the second strengthening members 20 of this utility model are both strengthening plates with triangular protrusions in the middle.
[0037] In addition, in order to increase the strength of the tops of the first deflector plate 15 and the second deflector plate 16, an "Λ"-shaped gusset plate 22 is provided at the tops of the first deflector plate 15 and the second deflector plate 16. The gusset plate 22 also facilitates the diversion of the grain. Similarly, the gusset plate 22 is connected to the first deflector plate 15 and the second deflector plate 16 by welding.
[0038] In order to prevent the grain from being extruded out of the drying layer 3 from the large-mouth ends of the air inlet angled box 5 and the air outlet angled box 6, a grain baffle 23 is provided at the lower part of the air inlet hole 10 of the first installation side plate 9 and the air outlet hole of the second installation side plate.
[0039] As can be seen from the above, more than one layer of the drying layer 3 is provided in the present utility model. In this embodiment, two layers of the drying layer 3 are provided up and down. Each time it operates, the grain is dried through the two layers of the drying layer 3. The drying time is long, which further improves the drying efficiency and reduces the number of operations.
[0040] The grain dried by the drying layer 3 automatically enters the grain discharging layer 4. Specifically, the grain discharging layer 4 includes a grain discharging container located below the drying layer 3. A grain diversion plate 25 in the shape of "Λ" is provided at the inlet end of the grain discharging container. A grain discharging wheel 26 is provided between adjacent grain diversion plates 25. A conveyor belt 27 is provided below the outlet end of the grain discharging container. The conveyor belt 27 is connected to the inlet of a hoist 28, and the outlet of the hoist 28 is connected to the inlet of the tempering layer 2.
[0041] In this embodiment, the grain discharging container is composed of two downward-sloping plates 24 arranged in a "V" shape located below the drying layer 3 and the front and rear side plates of the grain discharging layer 4.
[0042] The dried grain is conveyed to the hoist 28 through the conveyor belt 27 and sent back to the tempering layer 2 for re-drying. Combining with the monitoring of the moisture meter until the required dryness is reached.
[0043] It should be noted that the grain discharging wheel 26 of the present utility model is driven to rotate by a driving mechanism, such as a chain drive mechanism, a belt drive mechanism, etc.
[0044] The above embodiments are only one of the preferred embodiments of the present utility model, and do not limit the implementation scope of the present utility model. Therefore, all equivalent changes made according to the shape, structure, and principle of the present utility model should be covered within the protection scope of the present utility model.
Claims
1. A mixed flow grain dryer, comprising a dryer body (1), wherein a slow-release layer (2), at least one drying layer (3) and a grain discharge layer (4) are arranged in the dryer body (1), characterized in that: The drying layer (3) comprises an air inlet angular box (5) and an air outlet angular box (6) which are spaced and arranged alternately from top to bottom. The upper ends of the air inlet angular box (5) and the air outlet angular box (6) are sharp corners, and both sides of the sharp corners are guide plates. One end of the air inlet angular box (5) and the air outlet angular box (6) is a large opening end and the other end is a small opening end. The large opening end is provided with a mounting flange (7), and the small opening end is provided with a sealing plate (8). The large opening end of the air inlet angular box (5) is connected to a first mounting side plate (9) of the drying layer (3) through the mounting flange (7). The first mounting side plate (9) is provided with a flange having the same shape as the large opening end of the air inlet angular box (5). An air inlet hole (10), a small end of the air inlet angle box (5) is connected to the second mounting side plate through a sealing plate (8), a large end of the air outlet angle box (6) is connected to the second mounting side plate through a mounting flange (7), an air outlet hole having the same shape as the large end of the air outlet angle box (6) is provided on the second mounting side plate, a small end of the air outlet angle box (6) is connected to the first mounting side plate (9) through a sealing plate, an air inlet cover (11) is provided on one side of the first mounting side plate (9), the air inlet cover (11) is connected to the burner (12), an air outlet cover (13) is provided on one side of the second mounting side plate, the air outlet cover (13) is connected to the fan (14).
2. A mixed flow grain dryer according to claim 1, characterized in that: The air inlet angle box (5) and the air outlet angle box (6) comprise a first guide plate (15) and a second guide plate (16) in the shape of "Λ", the lower parts of the first guide plate (15) and the second guide plate (16) are open, and one end of the first guide plate (15) and the second guide plate (16) is bent toward the center to form a first baffle plate (17) and a second baffle plate (18), the first guide plate (15), the second guide plate (16), the first baffle plate (17), and the second baffle plate (18) form a large opening end, and the other ends of the first guide plate (15) and the second guide plate (16) form a small opening end, and mounting flanges (7) are provided on the first guide plate (15), the second guide plate (16), the first baffle plate (17), and the second baffle plate (18).
3. A mixed flow grain dryer according to claim 2, characterized in that: A first reinforcing member (19) and a second reinforcing member (20) are arranged on the inner walls of the first guide plate (15) and the second guide plate (16) along the length direction, and two ends of the cross bar (21) are respectively connected to the first reinforcing member (19) and the second reinforcing member (20).
4. The mixed flow grain dryer according to claim 2, characterized in that: A "Λ"-shaped angle plate (22) is provided on the top of the first guide plate (15) and the second guide plate (16).
5. The mixed flow grain dryer according to claim 1, characterized in that: A grain blocking plate (23) is arranged at the lower part of the air inlet hole (10) of the first mounting side plate (9) and the air outlet hole of the second mounting side plate.
6. A mixed flow grain dryer according to any one of claims 1 to 5, characterized in that: The drying layer (3) is provided with two layers, one above the other.
7. The mixed flow grain dryer according to claim 1, characterized in that: The grain discharge layer (4) comprises a grain discharge container located below the drying layer (3); a grain diverter plate (25) in the shape of "Λ" is arranged at the inlet end of the grain discharge container; a grain discharge wheel (26) is arranged between adjacent grain diverter plates (25); a conveyor belt (27) is arranged below the outlet end of the grain discharge container; the conveyor belt (27) is connected to the inlet of an elevator (28); and the outlet of the elevator (28) is connected to the inlet of the slow-release layer (2).