Sun and air dryer for grains

Abstract

To provide a sun drying type grain dryer which improves the effect and efficiency of drying grain. [Solution] The drying tower has a drying chamber, a hot air chamber, and a dehumidifying chamber located on both sides of the drying chamber, and a plurality of drying pipes and a plurality of dehumidifying pipes are fixed in a staggered pattern from top to bottom. The drying chamber and the hot air chamber share a first side wall, and the drying chamber and the dehumidifying chamber share a second side wall. The first side wall and the second side wall are each provided with a plurality of hot air inlets and a plurality of moisture outlets. One end of the drying pipe is welded and connected to the hot air inlet, and the other end is inside. The first side wall is abutted against and welded to the second side wall, one end of the moisture discharge pipe is welded and connected to the moisture outlet, and the other end is connected to the second side wall. A grain dial mechanism and a lower grain hopper are welded and fixed to the bottom of the hot air chamber, and a hot air stove is installed outside the drying tower.

Description

[Technical field]

[0001] This utility model relates to the technical field of drying devices, and in particular to a solar-type grain dryer. [Background technology]

[0002] The development of modern agriculture is based on large-scale and mechanization, and high-quality mechanical drying of grains and seeds is a very important part of it. Existing technologies include CN112444103A-Grain Dryer. It includes a grain storage bin, a conveying mechanism for transporting grains to the grain storage bin, a drying chamber connected to the grain storage bin, and a hot air stove for supplying hot air. The wind guide structure to the drying chamber is composed of an intake channel located in the center of the drying chamber, exhaust channels located on both sides of the drying chamber, and an air guide duct connecting the intake channel and the drying chamber. The air inlet channel is installed in the middle of the drying chamber and the hot air stove is connected to the air inlet channel. Exhaust channels are installed on both sides of the drying chamber, and hot air flows in from the center of the drying chamber and is exhausted from both sides, so that the temperature distribution in the drying chamber is more uniform.

[0003] However, the drying chamber of this dryer is located at the bottom of the grain storage silo, and when drying grain, the hot air in the drying chamber can only dry at the bottom of the grain storage silo. Because the grain at the top of the grain storage silo cannot be dried quickly, when drying grain periodically, the second conveyor, the lifting bucket, and the first conveyor need to keep working to dry the grain in the grain storage bin. The grain can be continuously dropped into the drying chamber for drying, which will cause energy waste. In addition, the moisture generated from the grain is not discharged in time, and the moisture accumulates in the grain pile, which affects the grain drying effect and efficiency.

[0004] Therefore, how to provide a solar-drying type grain dryer that can improve the drying effect and efficiency of grain is an urgent problem to be solved by those skilled in the art. Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, the present utility model provides a sun drying type grain dryer that can improve the grain drying effect and drying efficiency. [Means for solving the problem]

[0006] To achieve the above objectives, this utility model adopts the following technical solutions:

[0007] Sun-dried grain dryers include:

[0008] Drying tower, there are drying bin, hot air bin and dehumidifying bin inside the drying tower, and there are hot air bin and dehumidifying bin on both sides of the drying bin. A plurality of drying tubes and a plurality of moisture discharge tubes are fixed in sequence in the horizontal direction, the structures of the drying tubes and moisture discharge tubes are all the same, and their bottoms are all open. The hot air chamber and all the moisture discharge tubes share a first side wall, the drying chamber and the dehumidifying chamber share a second side wall, and a plurality of hot air are respectively supplied to the first side wall and the second side wall. One end of the drying pipe is fixedly connected to the hot air inlet and the other end is abutted and fixed against the second side wall, one end of the moisture discharge pipe is fixed to the second side wall and connected to the moisture discharge port and the other end is abutted and fixed against the first side wall, a grain dial mechanism and a lower grain bucket are installed at the bottom of the hot air bin, and the grain dial mechanism is located above the upper bucket mouth of the lower grain bucket.

[0009] A hot air stove is installed outside the drying tower, and the hot air outlet of the hot air stove is connected to the hot air inlet at the bottom of the hot air bin, and the hot air outlet of the hot air stove is connected to the hot air inlet at the bottom of the hot air bin.

[0010] Dehumidifier. The dehumidifier is installed outside the drying tower, and the dehumidification port of the dehumidifier is connected to the dehumidification outlet at the bottom of the dehumidification bin.

[0011] a circulating conveying mechanism fixed to the bottom of the drying tower and located below the lower mouth of the lower grain hopper; The circulation elevator is fixed on one side of the drying tower, and there are a first supply hopper and a second supply hopper at the bottom of the circulation elevator, and the end of the circulation conveying mechanism is connected to the second supply hopper. The supply hopper is connected, and there is a grain discharge pipe at the top of the circulation elevator, and there is a grain discharge pipe connected to the grain storehouse at the top of the drying bin. The grain discharge pipe is attached to the grain discharge pipe.

[0012] From the above technical solutions, compared with the existing technology, it can be seen that the utility model discloses a sun-dried grain dryer in which, when used, the grain is fed into the circulation elevator through the first feed hopper, and the circulation rises. The machine lifts the grain to the top of the drying tower and puts it into the drying bin through the grain outlet pipe. When the drying bin is filled with grain, the circulation elevator stops, and the grain remains stationary in the drying bin. At this time, the drying pipe and the dehumidifying pipe are embedded in the grain pile, and the grain in the drying bin is piled up in layers, and the dehumidifier and hot air stove are operated below. The hot air stove is generated by the negative pressure of the dehumidifier. The hot air enters the hot air cabinet, and the hot air enters the drying tube from the hot air inlet of the first side wall, heating and drying the drying tube. After drying the surrounding grain layer for a certain period of time, the abrasive wheel mechanism works, and the grain in the drying bin is discharged into the lower grain hopper by the circulation conveying mechanism, and falls onto the circulation conveying mechanism. The grain is transported by the conveying mechanism through the second supply hopper to the circulation elevator, and the circulation machine lifts the grain to the top of the drying tower again, and enters the drying bin again through the grain outlet pipe. After drying the grain for a certain period of time, cycle drying is performed again. The moisture discharged from the grain during this process enters the dehumidification tube and enters the dehumidification chamber through the grain dehumidification port. It passes through the second side wall and is finally discharged through the moisture removal outlet and the dehumidifier. Therefore, the drying bin of this dryer is filled with all the grains and is evenly dried through the drying tubes arranged in the drying bin, and the moisture generated from the grains is discharged through the moisture discharge pipe, which can improve the drying effect of the grains. In addition, the grain dial mechanism, the circulation conveying mechanism, and the circulation elevator do not work all the time, but work intermittently, which not only saves energy, but also realizes the regular turning and drying temperature of the grains. The hot air stove can be set to 40-48 degrees, so that the drying temperature and the drying and rotation method can simulate the original sun drying method.

[0013] In addition, a plurality of fans for swirling and stirring hot air are fixed at horizontal intervals to the bottom of the hot air chamber near the hot air inlets so as to cover the multiple hot air inlets.

[0014] The advantages of adopting the above technical solution are: The air stirrer swirls and stirs the hot air from the hot air stove, so that the hot air can quickly cover the entire hot air warehouse, and the hot air can be introduced into each hot air bin to ensure the drying effect of each drying tube, and ensure the drying uniformity of the particle layer in the drying bin.

[0015] The grain-turning wheel mechanism includes a plurality of grain-turning hoppers, a plurality of grain-turning hoppers, and a drive unit arranged in parallel, and is installed at the outlet of the grain-turning hoppers. The wheel is drivingly connected to the drive unit fixed to the drying tower, and the grain dial wheel is located above the mouth of the upper bucket.

[0016] The advantageous effect of adopting the above technical solution is that the driving part rotates the grain dial wheel, so that the grain falls through the outlet of the grain dial hopper onto the circulating conveying mechanism, thereby realizing the grain discharge process.

[0017] The circulating transport mechanism is a belt conveyor or an auger conveyor.

[0018] There is also a grain spreader plate suspended from the top of the drying bin, with the end opening of the grain outlet pipe being located above the grain spreader plate.

[0019] The beneficial effect of adopting the above technical solution is that the grain discharged through the grain outlet pipe can impact the grain spreading plate, make the grain evenly distributed in the drying bin, and improve the drying effect of the grain.

[0020] In addition, a spark extinguisher is installed at the hot air outlet of the hot air stove.

[0021] The beneficial effects of adopting the above technical solution are: The danger caused by sparks being contained in the hot air entering the hot air chamber can be avoided.

[0022] In addition, a temperature and humidity sensor is suspended above the drying chamber.

[0023] The beneficial effects of adopting the above technical solution are: the drying temperature and moisture content of the grain can be monitored in real time to ensure the effect of grain drying;

[0024] The drying tube and the moisture discharging tube are both rectangular tubes with triangular cross sections, and an opening is provided at the bottom of the rectangular tube.

[0025] The beneficial effects of adopting the above technical solution are: the upper corners of the square tube can separate the particles and induce the particles to fall, which is beneficial to uniformly dry the particles in the upper layer of the square tube; the hot air in the drying tube penetrates into the grain layer through the openings, and dries the grains in the lower layer of the square tube;

[0026] The square tube includes a square tube and a plurality of connecting ribs, the bottom surface of the square tube is arranged as an opening, and the plurality of square tubes are fixed at intervals along the length direction of the square tube. The connecting ribs will be described.

[0027] The beneficial effect of adopting the above technical solution is that the connecting rib can improve the structural strength of the corner tube opening and prevent the corner tube from being crushed or damaged by the grain pile.

[0028] Furthermore, the angle tube comprises a first side plate and a second side plate, the upper end of the first side plate and the upper end of the second side plate are fixed at an included angle α to form the apex of a triangle, the bottoms of the first side plate and the second side plate are respectively bent inward by a reinforcing bend, and the space between the two reinforcing bends is fixed between the two reinforcing bends.

[0029] The advantageous effect of adopting the above technical solution is that the strength of the opening can be further improved by strengthening the bent part, and the opening is effectively supported by the connecting rib, which greatly improves the service life of the square tube. [Brief description of the drawings]

[0030] In order to more clearly describe the embodiments of the present invention or the technical solutions of the prior art, the drawings that need to be used to describe the embodiments or the prior art are briefly introduced below. These are only the embodiments of the present invention, and those skilled in the art can obtain other drawings based on the drawings provided without creative efforts. [Figure 1] FIG. 1 is a schematic diagram of the shaft side structure of a solar-drying type grain dryer according to a utility model. [Diagram 2] FIG. 2 is an enlarged schematic diagram of the structure of part A in FIG. [Diagram 3] FIG. 3 is a schematic side view of the structure of FIG. [Figure 4] FIG. 4 is a schematic front structural view showing the arrangement of the drying pipe and the moisture discharging pipe in FIG. [Diagram 5] FIG. 5 is a schematic side view of the drying chamber, hot air chamber, and moisture releasing chamber. [Figure 6] FIG. 6 is a schematic three-dimensional structural diagram of FIG. [Figure 7] FIG. 7 is an enlarged schematic diagram of the structure of part B in FIG. [Figure 8] FIG. 8 is an enlarged schematic diagram of the structure of part A in FIG. [Figure 9] FIG. 9 is a schematic diagram of the drying tube. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] The technical solutions in the embodiments of the utility model are described below clearly and completely with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model. Not all implementation examples. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the utility model.

[0032] As shown in FIGS. 1 to 9 , an embodiment of the present invention discloses a sun-dried grain dryer, which includes:

[0033] The drying tower 1 has a drying chamber 11, a hot air chamber 12, and a dehumidifying chamber 13 located on both sides of the drying chamber 11 inside. A plurality of drying pipes 2 and a plurality of dehumidifying pipes 3 are fixed in a staggered manner from top to bottom. The drying chamber 11 and the hot air chamber 12 share a first side wall 4, and the drying chamber 11 and the dehumidifying chamber 13 share a second side wall 5. A plurality of hot air inlets 41 and a plurality of dehumidifying outlets 51 are provided in the first side wall 4 and the second side wall 5, respectively. One end of the drying pipe 2 is welded and connected to the hot air inlet 41, and the other end is inside. One side wall 4 is welded and fixed in contact with the second side wall 5, and one end of the moisture discharge pipe 3 is welded and connected to the moisture discharge outlet 51, and the other end is connected to the second side wall 5. The grain dial mechanism 6 and the lower grain hopper 7 are welded to the bottom of the hot air chamber 12 in contact with each other, and the grain dial mechanism 6 is located above the upper bucket opening 71 of the lower grain hopper 7; The hot air stove 8 is installed outside the drying tower 1. The hot air outlet of the hot air stove 8 is connected to the hot air inlet 121 at the bottom of the hot air bin 12;

[0034] A dehumidifier 9 is installed outside the drying tower 1, and a dehumidification port of the dehumidifier 9 is connected to a dehumidification outlet 131 at the bottom of the dehumidification bin 13.

[0035] The circulating transport mechanism 10 is fixed to the bottom of the drying tower 1 and is located below the lower bucket mouth 72 of the lower grain bucket 7.

[0036] Circulation elevator 14. The circulation elevator 14 is fixed to one side of the drying tower 1. A first supply hopper 141 and a second supply hopper 142 are provided at the bottom of the circulation elevator 14. A grain discharge pipe 143 connected to the second supply hopper 142 is provided at the top of the circulation elevator 14. A discharge valve is provided at the grain discharge pipe 144 in the grain storehouse.

[0037] A plurality of fans 15 for swirling hot air so as to cover the plurality of hot air inlets 41 are fixed at horizontal intervals to the bottom of the hot air chamber 12 near the hot air inlet 121.

[0038] In the above embodiment, the grain dial mechanism 6 includes a plurality of grain dial hoppers 61 arranged side by side, a plurality of grain dials 62, and a drive unit (a chain transmission can be used) at the grain dial outlet. The grain size dial 62 is connected to the drive unit fixed to the drying tower 1 in the hopper 61. The grain size dial 62 is located above the upper bucket opening 71.

[0039] In the above embodiment, the circulating transport mechanism 10 is a belt conveyor or an auger conveyor, but in this utility model, a belt conveyor is preferred, which can avoid mechanical damage caused by the transportation of grain by the auger.

[0040] In some embodiments, a grain spreader pan 16 is also included that is suspended above the drying bin 11 with the end opening of the grain outlet pipe 143 located above the grain spreader pan 16 .

[0041] In some embodiments, a spark extinguisher is installed at the hot air outlet of the hot air stove 8.

[0042] In some embodiments, a temperature and humidity sensor 17 is suspended from the top of the drying chamber 11.

[0043] In some embodiments, the drying pipe 2 and the moisture discharge pipe 3 are both square pipes having a triangular cross section, with an open opening 201 located at the bottom of the square pipe.

[0044] In some embodiments, the angle tube includes an angle tube 21 and a number of connecting ribs 22. An opening 201 is provided in the bottom surface of the angle tube 21, and a number of connecting pieces are fixed at intervals along the length of the angle. Tube 21 above the opening 201. Ribs 22.

[0045] In some embodiments, the angle tube 21 includes a first side plate 211 and a second side plate 212. The upper end of the first side plate 211 and the upper end of the second side plate 212 are fixed at an included angle α, and the bottoms of the first side plate 211 and the second side plate 212 are bent inward at reinforcing bends 213, respectively. The two reinforcing bends 213 are spaced apart to form an opening 201 in the space between them. The connecting ribs 22 are fixed on both sides between the reinforcing bends 213.

[0046] Specifically, the first side plate 211 and the second side plate 212 may be a continuous flat plate folded into a triangular tube shape in cross section, the bottom of the triangle is not closed, and the upper corners can separate the grain from the grain, guide the falling grain, and help the grain dry evenly.

[0047] The grain dryer of this utility model can automatically control the dryer through the control box (not shown), and during a certain drying, the grain is fed into the circulation elevator through the first feeding hopper, and the circulation elevator lifts up the grain. The grain is placed on the grain sprinkling plate at the top of the drying bin through the grain outlet pipe at the top of the drying tower, and when the drying bin is filled with grain, the grain can be evenly sprinkled into the drying bin through the sprinkling tray. When the circulation elevator stops, the grain stays stationary in the drying bin, and at this time the drying pipe and the dehumidifying pipe are buried in the grain pile, and the grain in the drying bin is stacked. When the hot air stove is operated, the negative pressure of the dehumidifier causes the hot air generated by the hot air stove to enter the hot air chamber, and the hot air is rapidly stirred. The hot air is supplied to the entire hot air chamber by the air agitator, enters the drying tube from the hot air inlet of the first side wall, and dries the particle layer around the drying tube. After a certain time has passed, the drive unit rotates the grinding wheel, and the grains in the drying bin are lowered into the grain hopper and dropped onto the circulating conveying mechanism. The circulating conveying mechanism transports the grains through the second supply hopper to the circulating elevator, where they are lifted to the top of the drying tower again, and the tube enters the drying bin again and is agitated. The grains are lifted and left for a certain period of time, and then cycle-dried again. The moisture discharged from the grains enters the moisture removal pipe and passes through the moisture removal port. The second side wall enters the moisture removal chamber and is finally discharged through the moisture removal outlet and dehumidifier. When the grains are dried, the circulating elevator lifts up the dried grains in the drying bin. At this time, the discharge valve opens, and the dried grains are discharged through the grain discharge pipe to the grain storehouse and stored.

[0048] The control box controls the drying temperature of the hot air stove to the temperature of the sun level. The drying temperature is 40-48°, and the rotation time can be set. For example, rotate every 30 minutes, and the drying temperature and rotation drying method can simulate the original sun drying method.

[0049] The drying bin of this dryer can be filled with grain, and the staggered drying pipes and moisture discharge pipes in the drying bin allow the grain to be stacked in layers in the drying bin, and the drying uses static drying to dry the grain layers. It performs comprehensive drying and uses the timed cycle rotation mode to dry and dehumidify the grain in regular cycles. Therefore, this dryer can improve the drying effect and efficiency of grain.

[0050] Each embodiment in this specification is described by focusing on the differences from other embodiments. The apparatus disclosed in the embodiment corresponds to the method disclosed in the embodiment, so the description is relatively simple, so please refer to the description in the method section for related details.

[0051] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sun-drying type grain dryer, comprising a drying tower (1) including a drying bin (11), a hot air bin (12), and a dehumidifying bin (13); A drying chamber (11) and a dehumidifying bin (13) are arranged on both sides of the drying chamber (11). A plurality of drying tubes (2) and a plurality of drain pipes (3) are fixed in a staggered manner in the drying chamber (11). The plurality of drying tubes (2) and the plurality of moisture drain pipes (3) have the same structure and are all open at their bottoms. The drying chamber (11) and the hot air chamber (12) share a first side wall (4), the drying chamber (11) and the dehumidifying chamber (13) share a second side wall (5), and the first side wall (4) and the second side wall (5) are provided with a plurality of hot air inlets ( the drying tube (2) has one end fixedly connected to the hot air inlet (41) and the other end abutting and fixed against the second side wall (5); the moisture exhaust pipe (3) has one end fixedly connected to the moisture exhaust port (51) and the other end fixedly connected to the first side wall (4); a grain dial mechanism (6) and a lower grain hopper (7) are installed at the bottom of the hot air bin (12), and the grain dial mechanism (6) is located above the mouth (71) of the upper bucket of the lower grain hopper (7); The hot air stove (8) is installed outside the drying tower (1), and the hot air outlet of the hot air stove (8) is connected to the hot air inlet (121) at the bottom of the hot air bin (12); The dehumidifier (9) is installed outside the drying tower (1), and a dehumidification port of the dehumidifier (9) is connected to an exhaust port (131) at the bottom of the dehumidification bin (13). The circular conveying mechanism (10) is fixed to the bottom of the drying tower (1) and is located below the lower bucket mouth (72) of the lower grain bucket (7); The circulation elevator (14) is fixed to one side of the drying tower (1) and has a first supply hopper (141) and a second supply hopper (142), an end of the circulation conveying mechanism (10) is connected to the second supply hopper (142), a grain discharge pipe (143) at the top of the circulation elevator (14) is located at the top of the dryer, a grain discharge pipe (144) connected to a grain storage area is provided at the top of the circulation elevator (14) in the warehouse (11), and a discharge valve is provided in the grain discharge pipe (144). A sun drying type grain dryer.

2. 2. The solar-drying type grain dryer according to claim 1, characterized in that the bottom of the hot air bin (12) near the hot air inlet (121) is provided with a plurality of horizontally spaced holes for drying the grain, and the hot air is swirled and stirred to cover the blowers (15) of the multiple hot air inlets (41).

3. The grain dial mechanism (6) comprises a plurality of grain dial hoppers (61) arranged in parallel, a grain dial wheel (62) and a drive unit are provided at the outlet of the grain dial hopper (61), the grain dial wheel (62) is fixed, the drying tower (1) is in the drive unit, and the grain dial wheel (62) is located above the upper bucket mouth (71), according to claim 1 or claim 2.

4. 3. The sun drying type grain dryer according to claim 1 or 2, wherein the circulating transport mechanism (10) is a belt conveyor or an auger conveyor.

5. The sun-drying type grain dryer according to claim 1 or claim 2, further comprising a grain spreading plate (16) suspended above the drying bin (11) and a grain discharge pipe end opening, the end opening of the grain discharge pipe (143) being located above the grain spreading plate (16).

6. 3. A sun drying type grain dryer as claimed in claim 1 or 2, characterized in that a spark extinguisher is provided at the hot air outlet of the hot air stove (8).

7. 3. A sun drying type grain dryer as claimed in claim 1 or 2, characterized in that a temperature and humidity sensor (17) is suspended from the upper part of the drying chamber (11).

8. The solar drying type grain dryer according to claim 1 or 2, characterized in that the drying tube (2) and the moisture discharge pipe (3) both have a triangular cross-sectional shape, and the bottom surface of the rectangular tube is positioned within the opening (201).

9. The solar drying type grain dryer according to claim 8, characterized in that the angular tube comprises a square tube (21) and a plurality of connecting ribs (22), the bottom surface of the square tube (21) is positioned in the opening (201), and a plurality of the connecting ribs (22) are fixed to the opening (201) at intervals along the longitudinal direction of the square tube (21).

10. The sun-drying type grain dryer according to claim 9, characterized in that the angle tube (21) includes a first side plate (211) and a second side plate (212), an upper part of the first side plate (211) and an upper part of the second side plate (212) are fixed at an included angle α so as to form a vertex of a triangle, the bottom parts of the first side plate (211) and the second side plate (212) both have reinforcing bent portions (213), the two reinforcing bent portions (213) are arranged at a distance from each other, and the space between them forms an opening (201), and the connecting rib (22) is fixed between the two reinforcing bent portions (213).

Images