Grain drying equipment and method capable of recycling heat

Abstract

The invention relates to the technical field of crop treatment, in particular to grain drying equipment and method capable of recycling heat, and the grain drying method comprises the following steps: drying grains by adopting the grain drying equipment; the grain drying equipment comprises a drying mechanism, a heat source and a drying cylinder, the drying mechanism comprises an inner ring, an outer ring and a plurality of circulating ring belts, the outer ring is provided with a plurality of first cavities, each first cavity is provided with a first sub-cavity, a second sub-cavity and a third sub-cavity, and the second sub-cavity communicates with the first sub-cavity and the third sub-cavity; a first suction part is arranged at the communicating position of the third sub-cavity and the second sub-cavity, a second suction part is arranged at the communicating position of the first sub-cavity and the second sub-cavity, a water absorption part is inserted into the second sub-cavity and used for absorbing water in gas, the circulating ring belt corresponds to the first cavity, one end of the circulating ring belt is inserted into the first cavity and passes through the water absorption part, and the other end of the circulating ring belt is inserted into the second cavity. And the other end of the inner ring is inserted into the inner ring, so that water can be discharged in time, and cyclic utilization of heat can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of crop processing, and in particular to a heat-recyclable grain drying device and method. Background Art

[0002] Grain drying is an important part of ensuring grain quality and reducing post-harvest losses; grain drying involves a variety of equipment and technologies, and its purpose is to prevent mold and rot by reducing the moisture content of grain, thereby ensuring food security and farmers' income.

[0003] Grain dryers are usually used to process major grain crops such as corn, soybeans, wheat and rice. There are many types of dryers on the market, such as air source heat pump dryers, which use a small amount of electricity to drive the compressor and use the physical phase change of the refrigerant to transfer the heat in the air to the drying room to achieve low-temperature drying, saving more than 70% energy compared to traditional electric drying rooms. In addition, there are circulating grain dryers, which automatically adjust the temperature through a constant temperature ventilation device to ensure that the grain is pollution-free during the drying process and the drying temperature is uniform.

[0004] In the related art, for example, Chinese patent CN221666456U discloses a rice seed drying device. When the rice seed drying device is used, the main tank body is first stably placed in the use position, and then the rice seeds to be dried are put into the main tank body through the feed pipe. At the same time, by setting a drying mechanism, hot air is input into the main tank body under the cooperation of the hot air blower, the transmission pipe, the air collecting cylinder, and the output head, so as to achieve the purpose of drying the rice seeds in the main tank body. At the same time, the driving motor is started, and the driving motor will drive the rotating shaft to rotate, and then the rotating shaft drives the stirring blades and the stirring blades to rotate in the main tank body, so as to achieve the purpose of stirring the rice seeds in the main tank body, so that the rice seeds in the main tank body can be fully contacted with the hot air.

[0005] Although the above-mentioned rice seed drying device can improve the drying effect of grain to a certain extent, it is found in the actual drying process that the grains in the main tank are piled up, resulting in difficulty in discharging moisture. The presence of moisture not only affects the drying efficiency of the grains, but also affects the recycling of heat. Summary of the invention

[0006] Based on this, it is necessary to provide a grain drying equipment and method with heat recycling to address the problems of low drying efficiency and poor heat recycling in the current grain drying process.

[0007] The above purpose is achieved through the following technical solutions: A grain drying device with heat recyclable utilization, the grain drying device with heat recyclable utilization comprising a drying mechanism, a heat source and a vertical drying drum, the drying mechanism is inserted inside the drying drum and comprises an inner ring, an outer ring and a circulation belt which are all hollow, the outer ring is sleeved on the outside of the inner ring, the outer ring has N mutually isolated first chambers, each of the first chambers is sequentially divided into a first sub-chamber, a second sub-chamber and a third sub-chamber along the circumferential direction, the second sub-chamber is respectively connected to the first sub-chamber and the third sub-chamber, and the third sub-chamber and the second sub-chamber are connected to each other. A first suction part is provided at the connection of the chamber, and the first suction part is configured to be able to suck the gas in the third sub-chamber into the second sub-chamber; a second suction part is provided at the connection of the first sub-chamber and the second sub-chamber, and the second suction part is configured to be able to suck the gas in the second sub-chamber into the first sub-chamber; a water absorption part is inserted in the second sub-chamber, and the water absorption part is configured to be able to absorb water in the gas; the heat source is configured to be able to transport the gas with a preset temperature into the first sub-chamber; N is a natural number greater than or equal to 2; The number of the circulation belts is equal to the number of the first chambers and are arranged in one-to-one correspondence. One end of the circulation belt is inserted in the first chamber and passes through the first sub-chamber, the water absorption part and the third sub-chamber at the same time. The other end is inserted in the inner ring. Air holes are opened on the inner and outer circumferential walls of the circulation belt.

[0008] Furthermore, the circulating belt forms a closed conveying loop inside the drying drum; the grain drying equipment with recyclable heat also includes a driving mechanism, and the driving mechanism is configured to provide a driving force for the movement of the circulating belt.

[0009] Furthermore, the driving mechanism includes a plurality of groups of inner gear rings and rotating shafts, the number of which is equal to the number of the circulating belts, and the inner gear rings are fixedly arranged one by one on the inner circumferential wall of the circulating belt; the rotating shafts are inserted inside the inner rings parallel to their axes, the rotating shafts are capable of self-rotation, and a first gear is fixedly sleeved on each of the rotating shafts, and the first gear is meshed with the inner gear rings.

[0010] Furthermore, the heat-recyclable grain drying equipment also includes a water pumping part, which is configured to pump water inside the water absorbing part.

[0011] Furthermore, the heat-recyclable grain drying equipment also includes a conveying mechanism, and the conveying mechanism is configured to drive the grain to move from bottom to top.

[0012] Furthermore, the conveying mechanism includes an outer cylinder and an auger, wherein the outer cylinder is inserted into the inner ring; and the auger is inserted into the outer cylinder and can rotate on its own.

[0013] Furthermore, there are multiple drying mechanisms, and the multiple drying mechanisms are arranged along the axial direction of the drying cylinder.

[0014] Furthermore, the first sub-chamber and the third sub-chamber of the adjacent drying mechanisms are arranged correspondingly.

[0015] Furthermore, the material of the circulating belt includes metal.

[0016] The present invention also provides a grain drying method with heat recyclable utilization, using a grain drying device with heat recyclable utilization, and the grain drying method with heat recyclable utilization comprises the following steps: S1, starting a heat source, wherein the heat source delivers gas having a preset temperature into the first sub-chamber; S2, putting grain into the drying drum; S3, start the first suction part and the second suction part, the first suction part sucks the gas in the second sub-chamber into the first sub-chamber, and the second suction part sucks the gas in the third sub-chamber into the second sub-chamber.

[0017] The beneficial effects of the present invention are: The present invention relates to a grain drying device and method with heat recycling. The grain drying method with heat recycling comprises drying grains with the grain drying device with heat recycling. When drying grains, the grain drying device with heat recycling first starts a heat source, and the heat source delivers gas with a preset temperature to the inside of a first sub-chamber to preheat a drying drum and a drying mechanism. Grains are then put into the drying drum, and the gas subsequently dries the grains. Then, a first suction part and a second suction part are started, and the first suction part can suck the gas in the third sub-chamber into the inside of the second sub-chamber, and the second suction part can suck the gas in the second sub-chamber into the inside of the first sub-chamber, so that the gas simultaneously forms a vacuum. It passes through N cycles in sequence, namely, the first sub-chamber, the circulating belt, the drying cylinder, the circulating belt, the third sub-chamber, the second sub-chamber, and the first sub-chamber. On the one hand, it can improve the uniformity of heating the grain. On the other hand, when the gas flows through the second sub-chamber, the moisture in the gas can be absorbed in time under the action of the water absorption part. This is not only conducive to more effective utilization of the thermal energy in the hot air and improvement of the drying efficiency of the grain, but also can reduce the demand for additional heating of the moisture, which is conducive to reducing energy consumption and improving the energy efficiency of the drying equipment. At the same time, by controlling the humidity in the air during the drying process, the drying degree of the grain can be better controlled to avoid the problem of over-drying or insufficient drying, which is conducive to ensuring the quality and integrity of the grain.

[0018] Furthermore, a closed conveying loop is formed inside the drying drum by arranging a circulating belt, so that when in use, the movement of the circulating belt can disturb the grain on the one hand, thereby helping to improve the contact adequacy between the grain and the hot air, and on the other hand, the circulating belt and the hot air can be wet-cleaned simultaneously by the water absorbed by the water absorption part, thereby helping to reduce the possibility of dust particles adhering to the surface of the grain, avoiding affecting the heat transfer between the grain and the hot air, and ensuring the drying efficiency.

[0019] Furthermore, by setting up a pumping part, the water inside the water absorption part can be promptly sucked out by the pumping part during use, thereby avoiding affecting the water absorption performance of the water absorption part on the one hand, and improving the continuity and efficiency of grain drying on the other hand.

[0020] Furthermore, by setting up a conveying mechanism, when in use, the conveying mechanism can drive the grain to move from bottom to top, which can make the grain and hot air fully contact on the one hand, and improve the uniformity of grain drying on the other hand.

[0021] Furthermore, by providing a plurality of drying mechanisms, the plurality of drying mechanisms are arranged along the axial direction of the drying cylinder, so that more grains can be dried at one time during use, thereby improving production efficiency.

[0022] Furthermore, by arranging the first sub-chamber and the third sub-chamber of adjacent drying mechanisms in correspondence, the hot air can circulate axially during use. On the one hand, the hot air can contact the grain more evenly, thereby improving the drying efficiency. On the other hand, it helps to reduce the uneven temperature distribution during the drying process, which is beneficial to improving the drying uniformity of the grain. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A front view schematic diagram of a grain drying device with heat recyclable utilization provided by an embodiment of the present invention; Figure 2 A schematic diagram of the top view of a grain drying device with heat recycling provided in one embodiment of the present invention; Figure 3 for Figure 2 Middle AA section view; Figure 4 for Figure 3 A schematic diagram of the partially enlarged structure at B in the middle; Figure 5 A schematic diagram of the exploded parts of a grain drying device with heat recycling provided in one embodiment of the present invention; Figure 6 A schematic diagram of the three-dimensional structure of a drying mechanism of a grain drying device with heat recyclable utilization provided by an embodiment of the present invention; Figure 7A schematic diagram of the exploded parts of a drying mechanism of a grain drying device with heat recycling provided in one embodiment of the present invention; Figure 8 A schematic cross-sectional view of a drying mechanism of a grain drying device with heat recyclable utilization provided in one embodiment of the present invention; Fig. 9 for Figure 8 A schematic diagram of the partially enlarged structure at C in the middle; Fig.10 for Figure 8 The schematic diagram of the local enlarged structure at D in the middle; Fig.11 A schematic cross-sectional structure diagram of a circulating belt of a grain drying device with heat recyclable utilization provided in one embodiment of the present invention.

[0024] in: 1. Drying cylinder; 101. Feeding port; 102. Discharging port; 11. Support legs; 12. Bracket; 13. Fixed frame; 14. Support frame; 2. Drying mechanism; 21. Inner ring; 211. First partition; 22. Outer ring; 2201. First sub-chamber; 2202. Second sub-chamber; 2203. Third sub-chamber; 221. Second partition; 222. Third partition; 223. First connecting pipe; 224. Second connecting pipe; 225. Hot air pipe; 226. Water pumping pipe; 23. Circulation belt; 231. First air hole; 232. Second air hole; 24. First suction part; 25. Second suction part; 26. Water suction part; 3. driving mechanism; 31. rotating shaft; 32. second gear; 33. top cover; 34. second driving motor; 35. fourth gear; 36. fifth gear; 4. Conveying mechanism; 41. Auger; 42. Outer cylinder; 421. Material distribution part; 43. Third driving motor. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned herein, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0027] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] like Figures 1 to 11 As shown, a grain drying device with heat recycling provided by an embodiment of the present invention is used for drying grains, and is configured to include a drying mechanism 2, a heat source and a vertical drying drum 1, the drying mechanism 2 is inserted into the drying drum 1, and is configured to include an inner ring 21, an outer ring 22 and a circulating ring belt 23, all of which are hollow, the outer ring 22 is sleeved on the outside of the inner ring 21, and the outer ring 22 has N mutually isolated first chambers, each of which is divided into a first sub-chamber 2201, a second sub-chamber 2202 and a third sub-chamber 2203 in sequence along the circumferential direction, the second sub-chamber 2202 is connected to the first sub-chamber 2201 and the third sub-chamber 2203 respectively, and in the third sub-chamber 220 A first suction portion 24 is provided at the connection between the first sub-chamber 2201 and the second sub-chamber 2202, and the first suction portion 24 is configured to be able to suck the gas in the third sub-chamber 2203 into the second sub-chamber 2202; a second suction portion 25 is provided at the connection between the first sub-chamber 2201 and the second sub-chamber 2202, and the second suction portion 25 is configured to be able to suck the gas in the second sub-chamber 2202 into the first sub-chamber 2201; a water absorption portion 26 is inserted in the second sub-chamber 2202, and the water absorption portion 26 is configured to be able to absorb water in the gas; the heat source is configured to be able to transport gas with a preset temperature to the first sub-chamber 2201; N is a natural number greater than or equal to 2.

[0029] The number of circulation belts 23 is equal to the number of first chambers and is arranged one-to-one. One end of the circulation belt 23 is inserted in the first chamber and passes through the first sub-chamber 2201, the water absorption part 26 and the third sub-chamber 2203 at the same time. The other end is inserted into the inner ring 21. Air holes are opened on the inner and outer walls of the circulation belt 23.

[0030] Specifically in this embodiment, Figure 1 As shown, the drying drum 1 is configured as a cylindrical structure, and a feed port 101 is provided at the top of the drying drum 1, the feed port 101 is used to receive grain, and the feed port 101 is in a closed state during and after drying; a discharge port 102 is provided at the top of the drying drum 1, the discharge port 102 is used to discharge the grain that has been dried inside the drying drum 1, and the discharge port 102 is in a closed state when feeding the drying drum 1, and is in an open state after drying; four inverted T-shaped legs 11 are evenly arranged along the circumferential direction on the outer side wall of the bottom of the drying drum 1, and the legs 11 are used to support the drying drum 1.

[0031] More specifically, the inner ring 21 and the outer ring 22 are both arranged coaxially with the drying drum 1 during installation. To facilitate the installation of the inner ring 21, as shown in FIG. Figure 3 As shown, a bracket 12 is provided on the inner wall of the bottom of the drying drum 1, and the inner ring 21 is arranged on the top of the bracket 12 during installation; to facilitate the installation of the outer ring 22, a fixing frame 13 is provided on the inner wall of the top of the drying drum 1, and the outer ring 22 is arranged at the bottom of the fixing frame 13 during installation.

[0032] For example, the number of the first chambers is six. Figure 8 As shown, six second baffles 221 are fixedly inserted inside the outer ring 22, and the six second baffles 221 are evenly arranged along the circumferential direction. The first chamber is formed between two adjacent second baffles 221, and the shape is set to be a fan ring; twelve third baffles 222 are fixedly inserted inside the outer ring 22, and the third baffles 222 are grouped in pairs, and are divided into six groups in total. The six groups are evenly arranged along the circumferential direction, and the two third baffles 222 in the same group are fixedly inserted in the same first chamber, as shown in FIG. Fig. 9 As shown, the first sub-chamber 2201 is formed between the third partition plate 222 on the left and the adjacent second partition plate 221, and its shape is set to be a fan ring. The second sub-chamber 2202 is formed between two third partition plates 222 in the same group, and its shape is set to be a fan ring. The third sub-chamber 2203 is formed between the third partition plate 222 on the right and the adjacent second partition plate 221, and its shape is set to be a fan ring.

[0033] In order to facilitate the second sub-chamber 2202 to be connected to the first sub-chamber 2201 and the third sub-chamber 2203 respectively, as shown in FIG. Figure 6As shown, six first connecting tubes 223 and six second connecting tubes 224 are fixedly connected to the outer peripheral wall of the outer ring 22. The first connecting tubes 223 and the second connecting tubes 224 are both configured as U-shaped structures, wherein the six first connecting tubes 223 are evenly arranged along the circumferential direction and are configured one-to-one with the first chambers. Taking one first connecting tube 223 as an example, as shown in FIG. Fig. 9 As shown, the left end of the first connecting tube 223 is connected to the second sub-chamber 2202 of the same first chamber, and the right end is connected to the third sub-chamber 2203 of the same first chamber. The six second connecting tubes 224 are evenly arranged along the circumference and are arranged one-to-one with the first chamber. Taking one second connecting tube 224 as an example, the left end of the second connecting tube 224 is connected to the first sub-chamber 2201 of the same first chamber, and the right end is connected to the second sub-chamber 2202 of the same first chamber; the number of the first suction parts 24 is six, and they are inserted one-to-one in the first connecting tube 223; the number of the second suction parts 25 is six, and they are inserted one-to-one in the second connecting tube 224; the number of the water absorption parts 26 is six, and they are inserted one-to-one in the second sub-chamber 2202.

[0034] In order to facilitate the heat source to deliver gas with a preset temperature to the first sub-chamber 2201, Figure 6 As shown, six hot air pipes 225 are fixedly connected to the outer peripheral wall of the outer ring 22 and are arranged one-to-one with the second connecting pipes 224. The hot air pipes 225 are connected to the second connecting pipes 224 and together form an H-shaped structure.

[0035] like Figure 8 and Fig. 9 As shown, there are six circulating belts 23, which are arranged one by one in correspondence with the first chambers. The shape of the circulating belt 23 is set to be a banana fan shape, and when installed, the small end is inserted into the inner ring 21 and the large end is inserted into the outer ring 22; Fig.11 As shown, the cross-sectional shape of the circulating annular belt 23 is set to be hexagonal; Figure 8 and Fig.10 As shown, six first baffles 211 are fixedly inserted inside the inner ring 21, and the six first baffles 211 are evenly arranged along the circumferential direction. When installing, the circulating ring belt 23 is configured so that the small end is inserted between two adjacent first baffles 211 to avoid movement interference between adjacent circulating ring belts 23.

[0036] More specifically, the water absorbing part 26 may be configured to include a shell and a sponge, wherein the sponge is inserted into the shell, and openings are provided on the left and right side walls of the shell, and the openings are provided to facilitate the circulation belt 23 to pass through normally.

[0037] More specifically, the first suction part 24 and the second suction part 25 may both be configured to include a fan.

[0038] More specifically, the heat source may be configured to include a hot air blower, and the air outlet of the hot air blower is connected in parallel via a pipeline and six hot air pipes 225 so as to provide gas with a preset temperature to all the first sub-cavities 2201 at the same time.

[0039] More specifically, in order to facilitate the control of the drying temperature inside the drying drum 1, a first temperature sensor can be provided inside the drying drum 1, and the first temperature sensor is used to sense the gas temperature inside the drying drum 1. A second temperature sensor is provided at the outlet of the second connecting pipe 224, and the second temperature sensor is used to sense the gas temperature discharged from the second connecting pipe 224.

[0040] It is understandable that there may be a plurality of second temperature sensors, and the temperature of the gas discharged from the second connecting pipe 224 is the average value of the temperatures sensed by all the second temperature sensors.

[0041] Initially, both the feed port 101 and the discharge port 102 are in a closed state.

[0042] During use, the hot air blower is first started, and the hot air blower simultaneously passes gas with a preset temperature into the six hot air pipes 225 through the pipeline. The gas with the preset temperature then preheats the drying cylinder 1 and the drying mechanism 2 until the first temperature sensor senses that the gas temperature inside the drying cylinder 1 reaches the first preset temperature value, and then the hot air blower can be turned off; then the feed port 101 is opened, and grain is added into the drying cylinder 1 through the feed port 101. After the feeding is completed, the feed port 101 is closed.

[0043] Then start all fans, such as Fig. 9 As shown, under the action of the fan on the first connecting pipe 223, the inside of the third sub-chamber 2203 is at negative pressure, and the inside of the second sub-chamber 2202 on the right side of the sponge is at positive pressure, so that the gas on both sides of the right circulating annular belt 23 inside the drying cylinder 1 can continuously move to the inside of the third sub-chamber 2203 through the air holes, so that the gas in the third sub-chamber 2203 can continuously move to the inside of the second sub-chamber 2202; under the action of the fan on the second connecting pipe 224, the inside of the second sub-chamber 2202 on the left side of the sponge is at negative pressure, and the inside of the first sub-chamber 2201 is at positive pressure, so that under the action of the pressure difference, the sea The gas inside the second sub-chamber 2202 on the right side of the sponge can continuously move to the second sub-chamber 2202 on the left side of the sponge, and then the gas inside the second sub-chamber 2202 on the left side of the sponge can continuously move to the first sub-chamber 2201, so that under the action of pressure difference, the gas inside the first sub-chamber 2201 can continuously move to the drying cylinder 1 through the air holes on the left circulation belt 23, so that the gas forms six cycles in sequence through the first sub-chamber 2201, the circulation belt 23, the drying cylinder 1, the circulation belt 23, the third sub-chamber 2203, the second sub-chamber 2202, and the first sub-chamber 2201.

[0044] On the one hand, the uniformity of heating the grain can be improved. On the other hand, when the gas flows through the second sub-chamber 2202, the moisture in the gas can be absorbed in time under the action of the sponge, which is not only conducive to more effective utilization of the thermal energy in the hot air and improving the drying efficiency of the grain, but also can reduce the need for additional heating of the moisture, which is conducive to reducing energy consumption and improving the energy efficiency of the drying equipment. At the same time, by controlling the humidity in the air during the drying process, the degree of dryness of the grain can be better controlled to avoid the problem of over-drying or insufficient drying, which is conducive to ensuring the quality and integrity of the grain.

[0045] In the above process, when the second temperature sensor senses that the temperature of the gas discharged from the second connecting pipe 224 is lower than the second preset temperature value, the hot air blower is started, and the hot air blower simultaneously passes gas with a preset temperature into the six hot air pipes 225 through the pipeline to avoid insufficient heat of the gas in the drying drum 1.

[0046] After the drying is completed, the discharge port 102 is opened to discharge the dried grain inside the drying drum 1.

[0047] In some embodiments, the circulating belt 23 forms a closed conveying loop inside the drying drum 1; the grain drying equipment with recyclable heat is configured to also include a driving mechanism 3, and the driving mechanism 3 is configured to provide a driving force for the movement of the circulating belt 23.

[0048] When in use, the circulating belt 23 can form a belt-driven movement. On the one hand, the movement of the circulating belt 23 can disturb the grain, thereby helping to improve the contact between the grain and the hot air. On the other hand, the water absorbed by the water absorption part 26 can simultaneously wet-clean the circulating belt 23 and the hot air, thereby helping to reduce the possibility of dust particles adhering to the surface of the grain, avoiding affecting the heat transfer between the grain and the hot air, and ensuring the drying efficiency.

[0049] In a further embodiment, the driving mechanism 3 is configured to include a plurality of groups of inner gear rings (not shown) whose number is equal to the number of the circulating belt 23 and a rotating shaft 31, and the inner gear rings are fixedly arranged one by one on the inner circumferential wall of the circulating belt 23; the rotating shafts 31 are inserted into the inner ring 21 with their axes parallel to each other, and the rotating shafts 31 can rotate on themselves, and a first gear (not shown) is fixedly sleeved on each rotating shaft 31, and the first gear is meshed with the inner gear ring.

[0050] Specifically in this embodiment, Figure 8 and Fig.10 As shown, the number of the rotating shafts 31 can be set to six, and they are inserted one by one between two adjacent first partitions 211; Figure 7 As shown, a second gear 32 is fixedly sleeved on the top of each rotating shaft 31. Figure 6As shown, the second gear 32 is located outside the inner ring 21 during installation.

[0051] More specifically, in order to facilitate the rotation of the rotating shaft 31, the driving mechanism 3 is configured to also include a first driving motor. The first driving motor is arranged on the bracket 12 or the fixing frame 13 during installation. A third gear is fixedly sleeved on the motor shaft of the first driving motor, and the third gear is meshed with all the second gears 32 at the same time.

[0052] During use, the first drive motor is started, the first drive motor drives the third gear to rotate, the third gear synchronously drives all the second gears 32 to rotate, the second gears 32 drive the corresponding rotating shafts 31 to rotate, the rotating shafts 31 drive the corresponding first gears to rotate, and the first gear synchronously drives the corresponding circulating belt 23 to move through the meshing transmission with the inner gear ring.

[0053] It can be understood that in order to improve the stability of the circulating belt 23 during movement, multiple internal gear rings can be provided on each circulating belt 23, and the multiple internal gear rings on the same circulating belt 23 are arranged along the bandwidth direction of the circulating belt 23; accordingly, a first gear equal in number to the number of internal gear rings on a single circulating belt 23 is fixedly sleeved on each rotating shaft 31.

[0054] In other embodiments, the driving mechanism 3 can also be configured to include a first driving motor whose number is equal to the number of rotating shafts 31. The first driving motors and the rotating shafts 31 are arranged in a one-to-one correspondence, and their motor shafts are coaxial and fixedly inserted on the corresponding rotating shafts 31 to drive all the rotating shafts 31 to rotate respectively.

[0055] In other embodiments, the heat-recyclable grain drying equipment is configured to further include a pumping section, which is configured to be able to pump water inside the water absorption section 26.

[0056] Specifically in this embodiment, the pumping unit can be configured to include a pump; to facilitate the pumping of the pump, such as Figure 8 and Fig. 9 As shown, six water extraction pipes 226 are fixedly inserted on the outer peripheral wall of the outer ring 22 . The six water extraction pipes 226 are evenly arranged along the circumferential direction and are arranged one by one corresponding to the water absorption parts 26 .

[0057] More specifically, in order to simplify the structure, the water pumping end of the water pump can be connected in parallel with six water pumping pipes 226 through pipelines.

[0058] When in use, the water in the water absorption part 26 can be pumped away in time under the suction of the water pump, so as to avoid affecting the water absorption performance of the water absorption part 26 on the one hand, and improve the continuity and efficiency of grain drying on the other hand.

[0059] In other embodiments, in order to improve the drying efficiency of grains, the grain drying equipment with recyclable heat is configured to also include a conveying mechanism 4, and the conveying mechanism 4 is configured to be able to drive the grains to move from bottom to top.

[0060] During use, the conveying mechanism 4 can drive the grain to move from bottom to top, which can make the grain fully contact with the hot air on the one hand, and improve the uniformity of grain drying on the other hand.

[0061] In a further embodiment, the conveying mechanism 4 is configured to include an outer cylinder 42 and an auger 41 , wherein the outer cylinder 42 is inserted into the inner ring 21 ; the auger 41 is inserted into the outer cylinder 42 and is capable of self-rotation.

[0062] Specifically in this embodiment, Figure 3 and Figure 4 As shown, the outer cylinder 42 is fixedly set on the bracket 12 during installation, and the axis is arranged to coincide with the axis of the drying cylinder 1; in order to provide driving force for the rotation of the auger 41, the conveying mechanism 4 is arranged to also include a third drive motor 43, and the third drive motor 43 is located at the top of the drying cylinder 1 during installation, and the motor shaft of the third drive motor 43 is arranged to pass through the top of the drying cylinder 1, and is fixed and coaxially connected to the top of the auger 41.

[0063] During use, the third drive motor 43 is started, and the third drive motor 43 drives the auger 41 to rotate. During the rotation of the auger 41, the auger 41 continuously drives the grain to move from bottom to top through the cooperation with the outer cylinder 42, and when the grain moves to the top of the outer cylinder 42, the grain then falls back into the drying cylinder 1 under the action of gravity.

[0064] In a further embodiment, in order to improve the uniformity of the grain falling back into the drying drum 1, as Figure 4 As shown, a material distribution portion 421 is fixedly sleeved on the outer peripheral wall of the outer cylinder 42. The material distribution portion 421 is arranged in a truncated cone structure with the small end facing upward.

[0065] During use, when the grain moves to the top of the outer cylinder 42 , the grain can be evenly distributed under the guidance of the conical surface of the distribution part 421 .

[0066] In other embodiments, in order to facilitate the provision of driving force for the rotation of the rotating shaft 31, the outer cylinder 42 is configured to be rotatably connected to the top of the bracket 12; the driving mechanism 3 is configured to further include a second driving motor 34, a fourth gear 35, a fifth gear 36 and a sixth gear (not shown), such as Figure 4As shown, in order to facilitate the installation of the second drive motor 34, a top cover 33 is provided on the top of the inner ring 21, and the top cover 33 is provided on the outside of all the second gears 32. The second drive motor 34 is arranged to be fixedly connected to the top of the top cover 33 during installation; the fourth gear 35 is arranged to be fixedly sleeved on the motor shaft of the second drive motor 34 during installation; the fifth gear 36 is arranged to be fixedly sleeved on the outside of the outer cylinder 42 during installation, and meshed with the fourth gear 35; the sixth gear is arranged to be fixedly sleeved on the outside of the outer cylinder 42 during installation, and meshed with all the second gears 32 at the same time.

[0067] During use, the second drive motor 34 is started, and the second drive motor 34 drives the fourth gear 35 to rotate. The fourth gear 35 drives the outer cylinder 42 to rotate through the meshing transmission with the fifth gear 36. During the rotation of the outer cylinder 42, the outer cylinder 42 synchronously drives all the second gears 32 to rotate through the sixth gear. The second gear 32 drives the corresponding rotating shaft 31 to rotate. The rotating shaft 31 drives the corresponding first gear to rotate. The first gear synchronously drives the corresponding circulating belt 23 to move through the meshing with the inner gear ring.

[0068] In a further embodiment, in order to avoid affecting the meshing transmission between the fourth gear 35 and the fifth gear 36, as shown in FIG. Figure 4 As shown, the second driving motor 34 is configured to be inserted into the bottom of the material dividing portion 421 during installation.

[0069] In some other embodiments, there are multiple drying mechanisms 2 , and the multiple drying mechanisms 2 are arranged along the axial direction of the drying drum 1 .

[0070] Specifically in this embodiment, for example, eight drying mechanisms 2 are provided. Figure 3 As shown, the eight drying mechanisms 2 are arranged along the axis of the drying drum 1 during installation, and adjacent inner rings 21 are fixedly connected together, and adjacent outer rings 22 are fixedly connected together.

[0071] More specifically, in order to facilitate supporting all drying mechanisms 2, as Figure 3 As shown, a support frame 14 is fixedly arranged on the inner side wall of the bottom of the drying drum 1. The support frame 14 is arranged to be connected to the bottom of the drying mechanism 2 located at the bottom during installation.

[0072] More specifically, there are multiple sixth gears, which are arranged at intervals along the axial direction of the outer cylinder 42 and are disposed one-to-one corresponding to the inner ring 21 .

[0073] More specifically, the top cover 33 is installed on the top of the inner ring 21 of the drying mechanism 2 located at the top.

[0074] When in use, a plurality of drying mechanisms 2 can dry grains at the same time, so that more grains can be dried at one time, which is beneficial to improving production efficiency.

[0075] In a further embodiment, in order to improve the circulation degree of hot air, the first sub-chamber 2201 and the third sub-chamber 2203 of the adjacent drying mechanism 2 are correspondingly arranged.

[0076] Specifically in this embodiment, Figure 3 As shown, the position of the first sub-chamber 2201 in the outer ring 22 of the drying mechanism 2 located at the odd positions is set correspondingly, the position of the first sub-chamber 2201 in the outer ring 22 of the drying mechanism 2 located at the even positions is set correspondingly, and the first sub-chamber 2201 and the third sub-chamber 2203 in the outer ring 22 of the drying mechanism 2 at the odd positions and the even positions are set correspondingly.

[0077] When in use, the hot air can circulate axially from bottom to top or from top to bottom. On the one hand, it allows the hot air to contact the grain more evenly, thereby improving the drying efficiency. On the other hand, it helps to reduce the uneven temperature distribution during the drying process, which is beneficial to improving the drying uniformity of the grain.

[0078] In other embodiments, the material of the endless belt 23 may be configured to include metal.

[0079] Specifically in this embodiment, metal generally has good thermal conductivity and elasticity, and the circulating endless belt 23 made of metal can not only better dry the grain when in use, but also better adapt to the complex working environment.

[0080] Exemplarily, the endless belt 23 can be made of metal materials such as aluminum, copper, copper-aluminum alloy, and nitinol.

[0081] In other embodiments, the material of the circulating belt 23 may also be configured to include a composite material, such as a copper-based composite material, a graphene-reinforced metal-based composite material, and the like.

[0082] In other embodiments, the material of the endless belt 23 may also be configured to include special alloy materials, such as aluminum bronze and the like.

[0083] In other embodiments, the material of the circulating belt 23 may also be configured to include a polymer material, such as a thermally conductive polymer.

[0084] In other embodiments, the water absorption part 26 may also be configured to include molecular sieves, activated carbon, etc.

[0085] In other embodiments, the first suction part 24 and the second suction part 25 may also be configured to include an air suction pump.

[0086] In other embodiments, Fig.11As shown, a plurality of first air holes 231 are opened on the inner peripheral wall of the circulation ring belt 23, and a plurality of second air holes 232 are opened on the outer peripheral wall of the circulation ring belt 23, and the height of the second air holes 232 in the vertical direction is higher than the first air holes 231 to achieve misalignment.

[0087] When in use, the inner and outer peripheral walls of the circulation belt 23 located between the water absorption parts 26 can contact each other, thereby reducing the amount of hot air passing directly from the inside of the circulation belt 23 without passing through the water absorption part 26, avoiding affecting the wet cleaning effect of the water absorption part 26.

[0088] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows: First, start the hot air blower, which simultaneously passes gas with a preset temperature into the six hot air pipes 225 through pipelines. The gas with the preset temperature then preheats the drying drum 1 and the drying mechanism 2 until the first temperature sensor senses that the gas temperature inside the drying drum 1 reaches the first preset temperature value, and then turns off the hot air blower; then open the feed port 101, and feed grain into the drying drum 1 through the feed port 101. After the feeding is completed, close the feed port 101.

[0089] Then start all fans, such as Fig. 9 As shown, under the action of the fan on the first connecting pipe 223, the inside of the third sub-chamber 2203 is at negative pressure, and the inside of the second sub-chamber 2202 on the right side of the sponge is at positive pressure, so that the gas on both sides of the right circulation ring belt 23 inside the drying cylinder 1 can continuously move to the inside of the third sub-chamber 2203 through the first air hole 231 and the second air hole 232, so that the gas in the third sub-chamber 2203 can continuously move to the inside of the second sub-chamber 2202; under the action of the fan on the second connecting pipe 224, the inside of the second sub-chamber 2202 on the left side of the sponge is at negative pressure, and the inside of the first sub-chamber 2201 is at positive pressure, so that under the action of the pressure difference, the sea The gas inside the second sub-chamber 2202 on the right side of the sponge can continuously move to the second sub-chamber 2202 on the left side of the sponge, thereby enabling the gas inside the second sub-chamber 2202 on the left side of the sponge to continuously move to the first sub-chamber 2201. As a result, under the action of pressure difference, the gas inside the first sub-chamber 2201 can continuously move to the drying cylinder 1 through the first air holes 231 and the second air holes 232 on the left circulation belt 23. As a result, the gas forms six cycles in sequence, passing through the first sub-chamber 2201, the circulation belt 23, the drying cylinder 1, the circulation belt 23, the third sub-chamber 2203, the second sub-chamber 2202, and the first sub-chamber 2201.

[0090] At the same time, the second drive motor 34 is started, and the second drive motor 34 drives the fourth gear 35 to rotate. The fourth gear 35 drives the outer cylinder 42 to rotate by meshing with the fifth gear 36. During the rotation of the outer cylinder 42, the outer cylinder 42 synchronously drives all the second gears 32 to rotate through the sixth gear. The second gear 32 drives the corresponding rotating shaft 31 to rotate. The rotating shaft 31 drives the corresponding first gear to rotate. The first gear synchronously drives the corresponding circulating belt 23 to move by meshing with the inner gear ring.

[0091] At the same time, the third drive motor 43 is started, and the third drive motor 43 drives the auger 41 to rotate. During the rotation of the auger 41, the auger 41 continuously drives the grain to move from bottom to top through the cooperation with the outer cylinder 42, and when the grain moves to the top of the outer cylinder 42, the grain then falls back into the drying cylinder 1 under the action of gravity.

[0092] In the above process, when the second temperature sensor senses that the temperature of the gas discharged from the second connecting pipe 224 is lower than the second preset temperature value, the hot air blower is started, and the hot air blower simultaneously passes gas with a preset temperature into the six hot air pipes 225 through the pipeline to avoid insufficient heat of the gas in the drying drum 1.

[0093] After the drying is completed, the discharge port 102 is opened to discharge the dried grain inside the drying drum 1.

[0094] An embodiment of the present invention further provides a grain drying method with heat recyclable utilization, using a grain drying device with heat recyclable utilization, and the grain drying method with heat recyclable utilization is configured to include the following steps: S1, start the heat source, and the heat source delivers gas with a preset temperature into the first sub-chamber 2201; Specifically, the heat source may be configured to include a hot air blower.

[0095] S2, putting grain into the drying drum 1; S3, start the first suction part 24 and the second suction part 25, the first suction part 24 sucks the gas in the second sub-chamber 2202 into the first sub-chamber 2201, and the second suction part 25 sucks the gas in the third sub-chamber 2203 into the second sub-chamber 2202.

[0096] Specifically, the first suction part 24 and the second suction part 25 can be configured as fans.

[0097] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A grain drying device with heat recycling, characterized in that: The grain drying equipment with heat recycling comprises a drying mechanism, a heat source and a vertical drying drum, wherein the drying mechanism is inserted inside the drying drum and comprises an inner ring, an outer ring and a circulation belt which are all hollow, the outer ring is sleeved on the outside of the inner ring, the outer ring has N mutually isolated first chambers, each of the first chambers is sequentially divided into a first sub-chamber, a second sub-chamber and a third sub-chamber along the circumferential direction, the second sub-chamber is respectively connected with the first sub-chamber and the third sub-chamber, and a first suction part is provided at the connection between the third sub-chamber and the second sub-chamber, the first suction part is configured to be able to suck the gas in the third sub-chamber into the second sub-chamber, and a second suction part is provided at the connection between the first sub-chamber and the second sub-chamber, the second suction part is configured to be able to suck the gas in the second sub-chamber into the first sub-chamber; a water absorption part is inserted in the second sub-chamber, and the water absorption part is configured to be able to absorb water in the gas; the heat source is configured to be able to transport the gas with a preset temperature into the first sub-chamber; N is a natural number greater than or equal to 2; The number of the circulation belts is equal to the number of the first chambers and are arranged in one-to-one correspondence. One end of the circulation belt is inserted in the first chamber and passes through the first sub-chamber, the water absorption part and the third sub-chamber at the same time. The other end is inserted in the inner ring. Air holes are opened on the inner and outer circumferential walls of the circulation belt.

2. The grain drying equipment with heat recycling according to claim 1 is characterized in that: The circulating belt forms a closed conveying loop inside the drying drum; the grain drying equipment with recyclable heat also includes a driving mechanism, which is configured to provide a driving force for the movement of the circulating belt.

3. The grain drying equipment with heat recycling according to claim 2 is characterized in that: The driving mechanism includes a plurality of sets of inner gear rings and rotating shafts, the number of which is equal to the number of the circulating belts, and the inner gear rings are fixedly arranged one by one on the inner circumferential wall of the circulating belt; the rotating shafts are inserted inside the inner rings with their axes parallel to each other, the rotating shafts can rotate on their own, and a first gear is fixedly sleeved on each of the rotating shafts, and the first gear is meshed with the inner gear rings.

4. The grain drying equipment with heat recycling according to claim 1 is characterized in that: The heat-recyclable grain drying equipment further includes a water pumping section, which is configured to pump water inside the water absorbing section.

5. The grain drying equipment with heat recycling according to claim 1 is characterized in that: The heat-recyclable grain drying equipment also includes a conveying mechanism, which is configured to drive the grain to move from bottom to top.

6. The grain drying equipment with heat recycling according to claim 5 is characterized in that: The conveying mechanism comprises an outer cylinder and an auger, wherein the outer cylinder is inserted into the inner ring; and the auger is inserted into the outer cylinder and can rotate on its own.

7. The grain drying equipment with heat recycling according to claim 1 is characterized in that: There are multiple drying mechanisms, and the multiple drying mechanisms are arranged along the axial direction of the drying cylinder.

8. The grain drying equipment with heat recycling according to claim 7 is characterized in that: The first sub-chamber and the third sub-chamber of the adjacent drying mechanisms are arranged correspondingly.

9. The grain drying equipment with heat recycling according to claim 1 is characterized in that: The material of the endless belt includes metal.

10. A grain drying method with heat recycling, characterized in that: The grain drying device with heat recycling according to any one of claims 1 to 9 is used, and the grain drying method with heat recycling comprises the following steps: S1, starting a heat source, wherein the heat source delivers gas having a preset temperature into the first sub-chamber; S2, putting grain into the drying drum; S3, start the first suction part and the second suction part, the first suction part sucks the gas in the second sub-chamber into the first sub-chamber, and the second suction part sucks the gas in the third sub-chamber into the second sub-chamber.

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