Small box type grain dryer

Abstract

The invention discloses a small box-type grain dryer, and relates to the technical field of grain dryers, the small box-type grain dryer comprises a support body and a drying box, the drying box is elastically connected to the support body, and the drying box can elastically lift and oscillate along the height direction of the support body; the hot air supply device is provided with an air distribution pipe arranged in the height direction of the drying box, and a plurality of hot air output holes are evenly distributed in the peripheral wall of the air distribution pipe; the plurality of air distribution pipes are uniformly distributed in the inner cavity of the drying box; a grain drying chamber corresponding to the peripheral sides of the plurality of air distribution pipes is formed in the inner cavity of the drying box; a damp and hot air outlet is formed in the top of the drying box above the grain drying chamber; and the driving end of the oscillation driver is in transmission connection with the drying box to drive the drying box to rise and fall and oscillate, so that the grain particles in the inner cavity of the drying box can be raised. Miniaturized design is achieved, a temperature field in the drying box is distributed more evenly, grain particles are heated more evenly, the hot air penetrating efficiency is improved, and then the grain drying quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of grain dryers, in particular to a small box-type grain dryer. Background Art

[0002] Rice drying involves reducing the moisture content of rice through physical or chemical means to meet safe storage standards. In recent years, grain dryers have been widely used by grain storage and processing companies, cooperatives, and large-scale grain growers. They effectively prevent losses caused by mold and insect infestation during grain storage due to insufficient drying. The drying process relies primarily on two key steps: heat transfer and moisture evaporation. Moisture on the surface of the rice grains is first heated and evaporated, then airflow carries the moisture away, ultimately allowing the moisture within the grains to gradually diffuse outward and evaporate completely. The key to rice drying lies in balancing temperature, humidity, and time. Excessively high temperatures increase the rate of rice cracking, affecting quality; while excessively low temperatures can prolong drying time and reduce efficiency. Drying equipment must be appropriately controlled based on the specific rice variety, initial moisture content, and environmental conditions to ensure rice quality and safe storage. The large grain dryers currently on the market are complex in structure and expensive. They are suitable for use by large grain processing enterprises, but not for use by small and medium-sized farmers and scientific research institutions. In order to achieve uniform heating of grain particles, they need to use a co-current, counter-current or mixed-current drying process. During this process, the grain particles need to be continuously circulated and transported by the elevator. The structure is complex and energy consumption is high. In addition, the grain particles are easily damaged by collisions during stirring and transportation. In addition, the temperature field inside the drying box of the small static grain dryers currently on the market is uneven, and the quality of the grain after drying cannot be reliably guaranteed. Under static drying conditions, grain particles are tightly packed under the action of their own gravity, making it difficult for hot air to evenly penetrate the grain layer and there are dead corners in the air circulation. As a result, static continuous heating may damage the activity of the seed germ. The miniaturization of grain dryers is difficult to design, because the hot air penetration efficiency decreases as the scale decreases. The drying cost of small static drying equipment exceeds that of large circulating grain dryers.

[0003] To this end, how to provide a small box-type grain dryer that can realize the miniaturization design of the grain dryer, reduce costs, and make the temperature field distribution in the drying box more uniform, the grain particles are heated more evenly, and the hot air penetration efficiency is improved, thereby improving the grain drying quality is a problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0004] In view of this, the present invention proposes a small box-type grain dryer, which aims to solve the technical problems of traditional grain dryers such as complex structure, high cost, poor hot air penetration efficiency, and uneven heating of grain particles.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a small box-type grain dryer, comprising:

[0007] Support body,

[0008] A drying box, the drying box being elastically connected to the support body, and the drying box being able to elastically rise and fall and oscillate along the height direction of the support body;

[0009] A hot air supply device, the hot air supply device having an air distribution pipe arranged along the height direction of the drying box, the outer peripheral wall of the air distribution pipe being uniformly distributed with a plurality of hot air output holes; the air distribution pipes are multiple, and the multiple air distribution pipes are uniformly distributed in the inner cavity of the drying box; a grain drying chamber is formed in the inner cavity of the drying box corresponding to the outer peripheral side of the multiple air distribution pipes; the top of the drying box is provided with a hot and humid air outlet corresponding to the upper part of the grain drying chamber;

[0010] An oscillating driver, a driving end of which is connected to the drying box to drive it to rise and fall and oscillate, thereby being able to lift the grains in the inner cavity of the drying box.

[0011] When a small-sized box-type grain dryer of the present invention is used, the grain drying chamber of the drying chamber is used to fill the grains to be dried; a plurality of air distribution ducts are evenly distributed in the inner cavity of the drying chamber, and a plurality of hot air output holes are evenly distributed on the outer peripheral walls of the air distribution ducts to achieve uniform heating of the grains; an oscillation driver can drive the drying chamber to oscillate up and down, thereby driving the grains filled in the grain drying chamber to move up and down. When the up and down oscillation intensifies, the grains lifted up in the grain drying chamber will be in a weightless state during the falling process, thereby becoming loose, thereby greatly improving the hot air penetration efficiency, so as to facilitate the discharge of the hot and humid gas evaporated from the grains. Because the drying chamber is elastically connected to the support body, the vibration system it constitutes has a natural frequency of up and down oscillation. When the driving frequency applied by the oscillation driver is equal to the natural frequency of the up and down oscillation of the drying chamber, resonance can occur. The use of resonance can improve energy transfer efficiency and significantly reduce driving energy consumption. The present invention has a simple structure, realizes the miniaturized design of the grain dryer, has low production cost and low energy consumption, and can make the temperature field distribution in the drying box more uniform and the grain particles heated more uniformly. By creating a weightless state of the grain particles, the hot air penetration efficiency is improved, thereby improving the drying quality of the grain.

[0012] As a further improvement of the above technical solution, the drying box includes a box body and an exhaust top cover; the box body is elastically connected to the support body; the driving end of the oscillation driver is transmission-connected to the box body to drive its lifting and oscillation; the top of the box body has a grain filling port; the exhaust top cover can be covered on the top of the box body and adapted to block the grain filling port; a hot and humid air exhaust port is provided on the exhaust top cover; and a grain discharge port is provided on the outer wall of the box body corresponding to the bottom of the grain drying chamber.

[0013] The beneficial effects of the above technical solution are: when in use, the exhaust top cover can be opened to fill grain particles into the grain drying chamber through the grain filling port; after the grain filling port is closed by the exhaust top cover, the humid and hot gas generated by the evaporation of grain moisture can be discharged through the humid and hot air exhaust port on the exhaust top cover.

[0014] As a further improvement of the above technical solution, the hot air supply device includes an air distribution plate and a hot air source. The air distribution plate is a hollow structure and is fixedly installed on the bottom wall of the box body. The lower ends of multiple air distribution pipes are fixed on the upper surface of the air distribution plate and connected to the inner cavity of the air distribution plate; the air outlet of the hot air source is connected to the air inlet of the air distribution plate through a pipeline to transport hot air to the multiple air distribution pipes.

[0015] The beneficial effect of the above technical solution is: when in use, the hot air source is used to generate hot air and transport it to the hollow inner cavity of the air distribution plate. The air distribution plate can evenly transport hot air to each air distribution pipe, and then the hot air is output through the hot air output holes evenly distributed on the outer wall of the air distribution pipe and fully and evenly contacts and exchanges heat with the grain particles.

[0016] As a further improvement of the above technical solution, the upper surface of the air distribution plate is an inclined surface; and the grain discharge port is arranged corresponding to the lower end of the inclined surface.

[0017] The beneficial effects of the above technical solution are: the inclined upper plate surface of the air distribution plate can transport grain particles to the side of the grain discharge port, so that the grain particles can be discharged from the box after drying; the oscillation drive drives the box to rise and fall to loosen the grain particles, which can facilitate the discharge of grain particles from the grain discharge port, effectively avoiding the accumulation and blockage of grain particles at the grain discharge port, and improving the efficiency of grain drying operations.

[0018] As a further improvement of the above technical solution, the hot air supply device also includes a stabilizing frame, which is installed on the upper part of the inner cavity of the box and fixedly connected to the upper ends of multiple air distribution pipes.

[0019] The beneficial effects of the above technical solution are: the stabilizing frame stabilizes the upper ends of the multiple air distribution pipes, and the lower ends of the air distribution pipes are stabilized by the air distribution plates, thereby improving the structural stability of the dryer.

[0020] As a further improvement of the above technical solution, a discharge door capable of opening and closing the grain discharge port is installed on the outer wall of the box body corresponding to the grain discharge port.

[0021] The beneficial effects of the above technical solution are: the discharge door is used to block the grain discharge port during the drying operation; after the drying is completed, the discharge door can be opened to discharge the dried grain particles.

[0022] As a further improvement of the above technical solution, the support body includes a support frame, a support base plate and an elastic telescopic member;

[0023] The supporting base is horizontally fixed to the lower part of the supporting frame; the lower end of the elastic telescopic member is connected to the supporting base, and the upper end is connected to the box body to elastically support the box body above the supporting base plate; the oscillation driver is installed on the supporting base plate, and its driving end is transmission-connected to the box body to drive its lifting and oscillation.

[0024] As a further improvement of the above technical solution, the support body also includes a support top plate and two elastic telescopic parts; the support top plate is located above the box body and is horizontally fixed on the upper part of the support frame; the lower end of the second elastic telescopic part is fixedly connected to the box body, and the upper end of the second elastic telescopic part is fixedly connected to the support top plate.

[0025] The beneficial effects of the above technical solution are: under the support of the supporting bottom plate and the supporting top plate, the elastic telescopic part 1, the elastic telescopic part 2 and the box body jointly construct a resonant subsystem; the box body filled with a certain mass of grain particles corresponds to a certain vibration natural frequency; when in use, the driving frequency of the oscillation driver can be adjusted to achieve resonance adjustment of the resonant subsystem and realize large-amplitude drive, thereby making the grain particles lifted in the grain drying room fully loose, thereby improving the hot air penetration efficiency.

[0026] As a further improvement of the above technical solution, the support body also includes guide rod 1 and guide rod 2; a guide through hole 1 is provided on the surface of the support bottom plate; a guide through hole 2 is provided on the surface of the support top plate; the upper end of the guide rod 1 is vertically fixed to the lower end of the box body, and the lower end of the guide rod moves through the guide through hole 1, and the lower end of the guide rod 2 is vertically fixed to the upper end of the box body, and the upper end of the guide rod 2 moves through the guide through hole 2, so as to jointly guide the elastic lifting and oscillation of the box body.

[0027] The beneficial effect of the above technical solution is: guide rod 1 is slidably connected in guide through hole 1, guide rod 2 is slidably connected in guide through hole 2, and the guide through hole 1 and guide through hole 2 work together to stabilize the lifting and lowering oscillation of the guide box, thereby improving the stability of the drying operation.

[0028] As a further improvement of the above technical solution, the hot air output holes are strip-shaped holes.

[0029] The beneficial effect of the above technical solution is that: since the grain particles are granular, designing the hot air output holes as strip holes can effectively reduce the blockage rate of the hot air output holes by the grain particles, thereby reducing the wind resistance of the hot air output.

[0030] It can be seen from the above technical solutions that, compared with the prior art, the present invention provides a small box-type grain dryer with the following advantages and beneficial effects:

[0031] 1. By constructing the drying box as an elastic oscillator, the present invention can more easily drive the drying box to obtain a resonant state, thereby obtaining a larger lifting amplitude at low energy consumption, thereby creating drying conditions where the grain particles lose weight, and obtaining a weightless and loose state of the grain particles during the drying operation, effectively improving the efficiency of hot air penetrating the grain particles, thereby significantly improving the grain drying quality.

[0032] 2. The present invention achieves uniform contact and heat exchange between hot air and grain particles by evenly distributing multiple air distribution pipes vertically in the drying box and evenly distributing multiple hot air output holes along the height and circumference of the outer wall of the air distribution pipes, thereby significantly improving the grain drying quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0034] Figure 1 A schematic structural diagram of a small box-type grain dryer according to the present invention;

[0035] Figure 2 A schematic diagram of a hot air supply device for a small box-type grain dryer according to the present invention;

[0036] Figure 3 A schematic diagram of a uniformly distributed air distribution pipe state of a small box-type grain dryer according to the present invention;

[0037] Figure 4 A schematic diagram of the structure of a stabilizing frame of a small box-type grain dryer according to the present invention;

[0038] In the figure: 1. Support body; 11. Support frame; 12. Support bottom plate; 121. Guide hole 1; 13. Elastic telescopic member 1; 14. Support top plate; 141. Guide hole 2; 15. Elastic telescopic member 2; 16. Guide rod 1; 17. Guide rod 2; 2. Drying box; 21. Box body; 211. Grain drying chamber; 212. Grain filling port; 213. Grain discharge port; 22. Exhaust top cover; 221. Hot and humid air discharge port; 23. Discharge door; 3. Hot air supply device; 31. Air distribution duct; 32. Air distribution plate; 321. Inclined surface; 33. Hot air source; 34. Stabilizing frame; 4. Oscillation driver. DETAILED DESCRIPTION

[0039] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0042] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0043] like Figures 1 to 4 As shown, a small box-type grain dryer includes: a support body 1, a drying box 2, a hot air supply device 3 and an oscillation driver 4.

[0044] The drying box 2 is elastically connected to the support 1, and the drying box 2 can elastically rise and fall and oscillate along the height direction of the support 1;

[0045] The hot air supply device 3 includes an air distribution duct 31 arranged along the height direction of the drying box 2. The outer peripheral wall of the air distribution duct 31 is uniformly distributed with multiple hot air output holes. There are multiple air distribution ducts 31, and the multiple air distribution ducts 31 are evenly distributed in the inner cavity of the drying box 2. A grain drying chamber 211 is formed in the inner cavity of the drying box 2 corresponding to the outer peripheral side of the multiple air distribution ducts 31. A moist hot air outlet 221 is provided at the top of the drying box 2 and above the grain drying chamber 211.

[0046] The driving end of the oscillation driver 4 is connected to the drying box 2 to drive it to rise and fall and oscillate, thereby lifting the grains in the inner cavity of the drying box 2.

[0047] In the small-scale box-type grain dryer of this embodiment, the grain drying chamber 211 of the drying chamber 2 is used to hold grain to be dried. Multiple air distribution ducts 31 are evenly distributed within the interior of the drying chamber 2, and multiple hot air outlet holes are evenly distributed on the outer circumference of the air distribution ducts 31, ensuring uniform heating of the grain. An oscillation driver 4 drives the drying chamber 2 to oscillate vertically, thereby causing the grains in the drying chamber 211 to move upward and downward. When the upward and downward oscillation intensifies, the grains lifted from the drying chamber 211 experience a weightless state during their descent, becoming loose and significantly improving the efficiency of hot air penetration, thereby facilitating the discharge of hot and humid gases evaporated from the grains. Because the drying chamber 2 is elastically connected to the support 1, the vibration system it forms has a natural frequency of upward and downward oscillation. When the driving frequency applied by the oscillation driver 4 equals the natural frequency of the upward and downward oscillation of the drying chamber 2, resonance occurs. This resonance improves energy transfer efficiency and significantly reduces drive energy consumption. The present invention has a simple structure, realizes the miniaturized design of the grain dryer, has low production cost and low energy consumption, and can make the temperature field distribution in the drying box more uniform and the grain particles heated more uniformly. By creating a weightless state of the grain particles, the hot air penetration efficiency is improved, thereby improving the drying quality of the grain.

[0048] In some embodiments, the drying box 2 includes a box body 21 and an exhaust top cover 22; the box body 21 is elastically connected to the support body 1; the driving end of the oscillation driver 4 is transmission-connected to the box body 21 to drive its lifting and oscillation; the top of the box body 21 has a grain filling port 212; the exhaust top cover 22 can be covered on the top of the box body 21 and adapted to block the grain filling port 212; a humid hot air exhaust port 221 is provided on the exhaust top cover 22; a grain discharge port 213 is provided on the outer wall of the box body 21 corresponding to the bottom of the grain drying chamber 211.

[0049] When in use, the exhaust top cover 22 can be opened to fill grain particles into the grain drying chamber 211 through the grain filling port 212; after the grain filling port 212 is closed by the exhaust top cover 22, the humid and hot gas generated by the evaporation of grain moisture can be discharged through the humid and hot air outlet 221 on the exhaust top cover 22.

[0050] Specifically, a temperature and humidity sensor is fixed on the inner wall of the box body 21 to monitor the temperature and humidity during the grain drying process. A temperature and humidity sensor is also installed on the exhaust cover 22 corresponding to the hot and humid air outlet 221 to detect the temperature and humidity of the exhaust hot air.

[0051] In some embodiments, the hot air supply device 3 includes an air distribution plate 32 and a hot air source 33. The air distribution plate 32 is a hollow structure and is fixedly installed on the bottom wall of the box body 21. The lower ends of multiple air distribution pipes 31 are fixed on the upper surface of the air distribution plate 32 and connected to the inner cavity of the air distribution plate 32; the air outlet of the hot air source 33 is connected to the air inlet of the air distribution plate 32 through a pipeline to transport hot air to the multiple air distribution pipes 31.

[0052] When in use, the hot air source 33 is used to generate hot air and transport it to the hollow inner cavity of the air distribution plate 32. The air distribution plate 32 can evenly transport hot air to each air distribution pipe 31, and then the hot air is output through the hot air output holes evenly distributed on the outer wall of the air distribution pipe 31 and fully and evenly contacts and exchanges heat with the grain particles.

[0053] Specifically, the hot air source 33 is designed with reference to the existing technology; the hot air obtained by heating the air with a PTC electric heater is cleaner and more environmentally friendly.

[0054] In some embodiments, the hot air supply device 3 further includes an exhaust fan, the inlet of which is connected to the hot and humid air outlet 221 via a pipeline to control the exhaust speed of the hot and humid air; the hot and humid air is discharged from the outlet of the exhaust fan. The exhaust fan is located away from the hot air source 33, which improves safety.

[0055] In some embodiments, the exhaust fan outlet is connected via a pipeline to one of the heat exchanger's flow channel inlets for heat exchange. The heat exchanger's one flow channel outlet discharges the heat exchanged exhaust gas, while the other flow channel inlet of the heat exchanger draws in outside air. The other flow channel outlet of the heat exchanger is connected to and communicates with the air inlet of the hot air source 33, thereby circulating the heat exchanged hot air back to the hot air source 33 and recycling the heat energy. Dryer hot exhaust recovery technology can also be designed with reference to existing technologies to achieve energy conservation, environmental protection, and reduced drying costs.

[0056] Specifically, the hot air source 33 includes a hot air box and an electric heater installed inside the hot air box. The hot air box's air inlet is connected to the outside atmosphere or to the outlet of another flow channel of the heat exchanger via a pipeline. The hot air box's air outlet is connected to the air inlet of the air distribution plate 32 via a pipeline. The electric heater can be a PTC electric heater.

[0057] Specifically, the hot air source 33 can be a heat source device used in a grain dryer in the prior art.

[0058] In some embodiments, the upper surface of the air distribution plate 32 is an inclined surface 321 ; the grain discharge port 213 is arranged corresponding to the lower end of the inclined surface 321 .

[0059] The inclined upper surface of the air distribution plate 32 can transport grain particles to the side of the grain discharge port 213, so that the grain particles can be discharged from the box 21 after drying. The oscillation driver 4 drives the box 21 to rise and fall to loosen the grain particles, which is conducive to the discharge of grain particles from the grain discharge port 213, effectively avoiding the accumulation and blockage of grain particles at the grain discharge port 213, and improving the efficiency of the grain drying operation.

[0060] In some embodiments, the hot air supply device 3 further includes a stabilizing frame 34 , which is installed on the upper portion of the inner cavity of the box body 21 and is welded and fixedly connected to the upper ends of the plurality of air distribution pipes 31 .

[0061] The stabilizing frame 34 serves to stabilize the upper ends of the plurality of air distribution pipes 31 , and the lower ends of the air distribution pipes 31 are stabilized by the air distribution plates 32 , thereby improving the structural stability of the dryer.

[0062] Specifically, the outer peripheral side of the stabilizing frame 34 is welded and fixed to the inner wall surface of the box body 21 .

[0063] In some embodiments, a discharge door 23 capable of opening and closing the grain discharge port 213 is installed on the outer wall of the box body 21 corresponding to the grain discharge port 213.

[0064] The discharge door 23 is used to block the grain discharge port 213 during the drying operation; after the drying is completed, the discharge door 23 can be opened to discharge the dried grain particles.

[0065] In some embodiments, the support body 1 includes a support frame 11, a support base 12 and an elastic telescopic member 13;

[0066] The supporting base plate 12 is horizontally fixed to the lower part of the supporting frame 11; the lower end of the elastic telescopic member 13 is connected to the supporting base plate 12, and the upper end is connected to the box body 21 to elastically support the box body 21 above the supporting base plate 12; the oscillation driver 4 is installed on the supporting base plate 12, and its driving end is connected to the box body 21 to drive its lifting and oscillation.

[0067] In some embodiments, the support body 1 also includes a support top plate 14 and an elastic telescopic part 15; the support top plate 14 is located above the box body 21 and is horizontally fixed to the upper part of the support frame 11; the lower end of the elastic telescopic part 15 is fixedly connected to the box body 21, and the upper end of the elastic telescopic part 15 is fixedly connected to the support top plate 14.

[0068] Under the support of the supporting bottom plate 12 and the supporting top plate 14, the elastic telescopic part 13, the elastic telescopic part 2 15 and the box body 21 jointly construct a resonant subsystem; the box body 21 filled with a certain mass of grain particles corresponds to a certain vibration natural frequency; when in use, the driving frequency of the oscillation driver 4 is adjusted to achieve resonance adjustment of the resonant subsystem and realize large-amplitude drive, thereby making the grain particles lifted in the grain drying chamber 211 fully loose, thereby improving the hot air penetration efficiency.

[0069] Specifically, the elastic stretch member 13 and the elastic stretch member 2 15 can both be springs.

[0070] In some embodiments, the support body 1 also includes a guide rod 16 and a guide rod 2 17; a guide through hole 121 is opened on the surface of the support bottom plate 12; a guide through hole 2 141 is opened on the surface of the support top plate 14; the upper end of the guide rod 16 is vertically fixed to the lower end of the box body 21, and the lower end of the guide rod 16 can move through the guide through hole 121, and the lower end of the guide rod 2 17 is vertically fixed to the upper end of the box body 21, and the upper end of the guide rod 2 17 can move through the guide through hole 2 141, so as to jointly guide the elastic lifting and oscillation of the box body 21.

[0071] Guide rod 16 is slidably connected in guide hole 121, and guide rod 2 17 is slidably connected in guide hole 2 141. The guide hole 121 and the guide hole 2 141 work together to stabilize the lifting and lowering oscillation of the guide box 21, thereby improving the stability of the drying operation.

[0072] Specifically, the elastic telescopic member 13 is movably mounted on the guide rod 16; the elastic telescopic member 2 15 is movably mounted on the guide rod 2 17. The lower end of the support frame 11 can be anchored to the ground by an anchor to improve the stability of the dryer operation.

[0073] In some embodiments, there can be multiple guide rods 16 and guide rods 2, 17, and multiple guide rods 16 are evenly distributed on the lower end surface of the box body 21; multiple guide rods 2 17 are evenly distributed on the upper end surface of the box body 21; each guide rod 1 16 is provided with an elastic telescopic part 13; each guide rod 2 17 is provided with an elastic telescopic part 2 15.

[0074] In some embodiments, the oscillation driver 4 can be a hydraulic cylinder, the fixed end of the hydraulic cylinder is installed on the upper end of the support base 12, and the telescopic end of the hydraulic cylinder is connected to the bottom end of the box 21 to drive the box 21 to rise and fall.

[0075] In some embodiments, the oscillation driver 4 can use an electromagnetic suction cup; the electromagnetic suction cup is fixedly installed on the upper end of the supporting base plate 12, and a magnetic plate is fixedly installed on the bottom end of the box 21 just above the electromagnetic suction cup; the energized electromagnetic suction cup can attract the magnetic plate, thereby driving the box 21 to rise and fall and oscillate.

[0076] In some embodiments, the magnetic plate may be made of a permanent magnet to further increase the suction force and effective action distance between the electromagnetic chuck and the magnetic plate.

[0077] Specifically, the electromagnetic suction cup is controlled by a controller to control the maximum acceleration of the lifting oscillation of the box body 21 to be no more than 1.2 times the acceleration of gravity, so that the grain particles inside the box body 21 are fully loosened during the oscillation process.

[0078] In some embodiments, the hot air output holes are strip-shaped holes.

[0079] Since the grain particles are granular, designing the hot air output holes as strip holes can effectively reduce the blockage rate of the hot air output holes by the grain particles, thereby reducing the wind resistance of the hot air output.

[0080] Specifically, the housing 21 is rectangular or cylindrical and can be fabricated by welding iron plates. The air distribution duct 31 and air distribution plate 32 are both made of stainless steel. The shape of the air distribution plate 32 matches the shape of the bottom of the interior of the housing 21. The air distribution plate 32 is embedded in the interior of the housing 21 and is connected to the hot air source 33 via an air duct. The air distribution duct 31 is a cylindrical tube with a sealed upper end and a lower end connected to the interior of the air distribution plate 32. Multiple hot air output holes are evenly distributed along the length and circumference of the outer wall of the air distribution duct 31, so that multiple hot air outlets are evenly distributed in the grain drying chamber 211 of the housing 21, achieving uniform heating of the grain.

[0081] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0082] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A small box-type grain dryer, characterized in that: include: Support body (1), A drying box (2), the drying box (2) being elastically connected to the support body (1), and the drying box (2) being capable of elastically rising and falling and oscillating along the height direction of the support body (1); A hot air supply device (3), wherein the hot air supply device (3) comprises an air distribution pipe (31) arranged along the height direction of the drying box (2), and the outer peripheral wall of the air distribution pipe (31) is uniformly distributed with a plurality of hot air output holes; the air distribution pipes (31) are multiple, and the multiple air distribution pipes (31) are uniformly distributed in the inner cavity of the drying box (2); a grain drying chamber (211) is formed in the inner cavity of the drying box (2) corresponding to the outer peripheral side of the multiple air distribution pipes (31); and a moist hot air outlet (221) is provided on the top of the drying box (2) corresponding to the upper side of the grain drying chamber (211); An oscillation driver (4), the driving end of which is connected to the drying box (2) to drive the drying box (2) to oscillate upward and downward, thereby being able to lift the grains in the inner cavity of the drying box (2).

2. A small box-type grain dryer according to claim 1, characterized in that: The drying box (2) comprises a box body (21) and an exhaust cover (22); the box body (21) is elastically connected to the support body (1); the driving end of the oscillation driver (4) is transmission-connected to the box body (21) to drive the box body to rise and fall and oscillate; The top of the box body (21) is provided with a grain filling port (212); the exhaust top cover (22) can be arranged on the top of the box body (21) and adapted to block the grain filling port (212); the exhaust top cover (22) is provided with a hot and humid air discharge port (221); and the outer wall of the box body (21) is provided with a grain discharge port (213) corresponding to the bottom of the grain drying chamber (211).

3. A small box-type grain dryer according to claim 2, characterized in that: The hot air supply device (3) includes an air distribution plate (32) and a hot air source (33); the air distribution plate (32) is a hollow structure and is fixedly mounted on the inner bottom wall of the box body (21); the lower ends of the plurality of air distribution pipes (31) are fixed on the upper plate surface of the air distribution plate (32) and are connected to the inner cavity of the air distribution plate (32); the air outlet of the hot air source (33) is connected to the air inlet of the air distribution plate (32) through a pipeline to transport hot air to the plurality of air distribution pipes (31).

4. A small box-type grain dryer according to claim 3, characterized in that: The upper surface of the air distribution plate (32) is an inclined surface (321); the grain discharge port (213) is arranged corresponding to the lower end of the inclined surface (321).

5. The small box-type grain dryer according to claim 3, characterized in that: The hot air supply device (3) further includes a stabilizing frame (34), which is installed on the upper part of the inner cavity of the box body (21) and fixedly connected to the upper ends of the plurality of air distribution pipes (31).

6. The small box-type grain dryer according to claim 3, characterized in that: A discharge door (23) capable of opening and closing the grain discharge port (213) is installed on the outer wall of the box body (21) at a position corresponding to the grain discharge port (213).

7. The small box-type grain dryer according to claim 2, characterized in that: The support body (1) comprises a support frame (11), a support base plate (12) and an elastic telescopic member (13); The supporting base plate (12) is horizontally fixed to the lower part of the supporting frame (11); the lower end of the elastic telescopic member (13) is connected to the supporting base plate (12), and the upper end is connected to the box (21) to elastically support the box (21) above the supporting base plate (12); the oscillation driver (4) is installed on the supporting base plate (12), and its driving end is transmission-connected to the box (21) to drive its lifting and oscillation.

8. The small box-type grain dryer according to claim 7, characterized in that: The support body (1) further comprises a support top plate (14) and a second elastic telescopic member (15); the support top plate (14) is located above the box body (21) and is horizontally fixed to the upper part of the support frame (11); the lower end of the second elastic telescopic member (15) is fixedly connected to the box body (21), and the upper end of the second elastic telescopic member (15) is fixedly connected to the support top plate (14).

9. The small box-type grain dryer according to claim 8, characterized in that: The support body (1) further comprises a guide rod 1 (16) and a guide rod 2 (17); a guide through hole 1 (121) is provided on the surface of the support bottom plate (12); a guide through hole 2 (141) is provided on the surface of the support top plate (14); the upper end of the guide rod 1 (16) is vertically fixed to the lower end of the box body (21), and the lower end of the guide rod 1 (16) moves through the guide through hole 1 (121); the lower end of the guide rod 2 (17) is vertically fixed to the upper end of the box body (21), and the upper end of the guide rod 2 (17) moves through the guide through hole 2 (141), so as to jointly guide the elastic lifting and oscillation of the box body (21).

10. The small box-type grain dryer according to claim 1, characterized in that: The hot air output hole is a strip-shaped hole.

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