Continuous dryer

Abstract

The invention relates to the technical field of agricultural machinery, and provides a continuous dryer which comprises a dryer body, a grain feeding assembly and a discharging assembly, the dryer body comprises a cold air drying section and at least one hot air drying section, the hot air drying sections are located above the cold air drying section, and each hot air drying section comprises an upper drying section and a lower tempering section; grain enters the lower tempering section of the ith hot air drying section after being dried through the upper drying section of the ith hot air drying section, enters the upper drying section of the (i + 1) th hot air drying section after being subjected to heat preservation through the lower tempering section of the ith hot air drying section, and enters the cold air drying section after being subjected to heat preservation through the lower tempering section of the Nth hot air drying section. After being cooled and dried by the cold air drying section, the grains enter the discharging assembly through the grain outlet, and the dried grains are discharged by the discharging assembly. According to the device, the drying uniformity of the dried crops and the grain fluidity can be guaranteed, and the grain drying uniformity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a continuous drying machine. Background Art

[0002] Drying is a crucial step in grain processing and storage, especially for grains with high humidity after harvest, such as wheat, corn, and rice. Effective drying can not only prevent grains from getting moldy and spoiling, but also improve the storage stability and quality of grains. Traditional grain drying methods mostly use natural drying or fixed drying equipment, but these methods have many shortcomings.

[0003] Specifically, although natural drying is low-cost, it is greatly restricted by weather conditions, has a long drying cycle, and is easily contaminated by dust, insects, etc., which affects the sanitary quality of grain. Although fixed drying equipment has improved the drying efficiency to a certain extent, it often has problems such as uneven drying and large equipment footprint. Especially for large-scale grain production or storage bases, the processing capacity and effect of fixed drying equipment are often difficult to meet the needs.

[0004] In recent years, with the development of agricultural mechanization, continuous dryers have gradually emerged. This type of dryer continuously conveys the grain to be dried into the dryer, and after a series of drying and slow drying processes, it achieves the ideal drying effect. However, the existing continuous dryers still have some shortcomings in design. For example, the hot air section of most continuous dryers currently uses a triangular plate and then hot air heating, which easily leads to good drying performance near the hot air and poor drying performance away from the hot air; the hot air pipe is evenly distributed in the middle, resulting in uneven drying in the corners of the dryer or where the hot air cannot reach.

[0005] In view of this, it is necessary to propose a continuous drying machine to solve or at least alleviate the above defects. Summary of the invention

[0006] The main purpose of the present invention is to provide a continuous drying machine to solve the technical problems of low drying uniformity and general drying quality in the continuous drying machine in the prior art.

[0007] To achieve the above object, the present invention provides a continuous dryer, comprising a dryer body, a grain feeding assembly and a material discharging assembly, wherein:

[0008] The top of the dryer body is provided with a grain inlet, and the bottom of the dryer body is provided with a grain outlet;

[0009] The grain feeding component is used to input the grain to be dried into the grain feeding port;

[0010] The dryer body comprises a cold air drying section and at least one hot air drying section, the hot air drying section is located above the cold air drying section, and each of the hot air drying sections comprises an upper drying section and a lower slow drying section, wherein the grain is dried in the upper drying section of the i-th hot air drying section and then enters the lower slow drying section of the i-th hot air drying section, and then enters the upper drying section of the i+1-th hot air drying section after being kept warm in the lower slow drying section of the i-th hot air drying section, and then enters the cold air drying section after being cooled and dried in the cold air drying section, and then enters the discharge assembly through the grain outlet; wherein, 1≤i≤N-1, i and N are both positive integers;

[0011] The discharging component discharges the dried grain.

[0012] Preferably, each of the upper drying sections comprises a first drying bin, a hot air duct assembly and a material drop control assembly, wherein the hot air duct assembly comprises a first hot air duct assembly arranged in the first drying bin and a second hot air duct assembly connected to the outer wall of the dryer body, a first air hole connected to the first drying bin is provided on the wall surface of the first hot air duct assembly, an air inlet of the first hot air duct assembly is connected to an air outlet of the second hot air duct assembly, an air outlet of the first hot air duct assembly is connected to the outside of the dryer body, and an air inlet of the second hot air duct assembly is connected to an external hot air source;

[0013] The material dropping control component has an open position and a closed position, wherein when in the open position, the grain in the first drying bin of the i-th hot air drying section enters the lower buffer section of the i-th hot air drying section, and after being kept warm in the lower buffer section of the i-th hot air drying section, enters the first drying bin of the (i+1)-th hot air drying section; when in the closed position, the grain stays in the first drying bin.

[0014] Preferably, the first hot air duct assembly includes two layers of first hot air duct rows arranged at intervals along the vertical direction, each of the first hot air duct rows includes a plurality of first hot air ducts evenly spaced along the width direction of the dryer body, and a first stacking space is formed between two adjacent first hot air ducts along the width direction.

[0015] Preferably, the material dropping control assembly includes a horizontal driving cylinder and a first cross baffle, the bin wall of the first drying bin is provided with a first through hole for the driving end of the horizontal driving cylinder to pass through, the width of the first cross baffle is smaller than the width of the first drying bin, the first cross baffle is connected to the driving end of the horizontal driving cylinder and moves synchronously with the driving end of the horizontal driving cylinder, the first cross baffle is provided with a first material dropping channel corresponding one-to-one to the first material stacking space, wherein, when in the open position, the first material dropping channel and the first material stacking space are arranged opposite to each other, and when in the closed position, the first material dropping channel and the first material stacking space are staggered so that the food stays in the first drying bin.

[0016] Preferably, the blanking control assembly also includes a dead zone blanking valve plate, which is hinged to the inner wall of the first drying bin, and is located directly above the driving end of the horizontal driving cylinder, wherein, when in the open position, the dead zone blanking valve plate is in a vertical state so that the first blanking channel and the first stacking space are arranged opposite each other, and when in the closed position, the dead zone blanking valve plate is in an inclined state, and the dead zone blanking valve plate covers the corresponding first blanking channel so that the food stays in the first drying bin.

[0017] Preferably, the cold air drying section comprises a second drying bin, a cold air duct assembly and a material discharging control assembly, wherein the cold air duct assembly comprises a first cold air duct assembly arranged in the second drying bin and a second cold air duct assembly connected to the outer wall of the dryer body, a second air hole connected to the second drying bin is provided on the wall surface of the first cold air duct assembly, an air inlet of the first cold air duct assembly is connected to an air outlet of the second cold air duct assembly, an air outlet of the first cold air duct assembly is connected to the outside of the dryer body, and an air inlet of the second cold air duct assembly is connected to an external cold air source;

[0018] The discharge control component has an open position and a closed position, wherein, when in the open position, the grain in the second drying bin enters the discharge component through the grain outlet; when in the closed position, the grain stays in the second drying bin.

[0019] Preferably, the first cold air duct assembly comprises a plurality of first cold air ducts evenly spaced apart along the width direction of the dryer body, and a second stacking space is formed between two adjacent first cold air ducts along the width direction.

[0020] Preferably, the discharge control assembly comprises a driving mechanism, a crank slider mechanism and a second transverse baffle, the crank slider mechanism is connected to the driving mechanism, the second drying bin is provided with a second through hole matching the crank slider mechanism, and the width of the second transverse baffle is smaller than the width of the second drying bin;

[0021] The second cross baffle is provided with a second material dropping channel corresponding one-to-one to the second material stacking space. The second cross baffle is connected to the crank slider mechanism and reciprocates in the lateral direction with the crank slider mechanism to control the connecting width between the second material dropping channel and the second material stacking space, thereby adjusting the amount of grain dropping.

[0022] Preferably, it also includes a flattening assembly, which includes a driving motor, a speed reduction mechanism, a first rotating spindle, a second rotating spindle and a scraper, wherein:

[0023] The input end of the speed reduction mechanism is connected to the output end of the driving motor, the first rotating main shaft is rotatably connected to the dryer body, and the upper end of the first rotating main shaft is connected to the output end of the speed reduction mechanism;

[0024] The second rotating spindle is connected to the first rotating spindle and moves synchronously with the first rotating spindle. The scraper is connected to the bottom of the second rotating spindle and moves synchronously with the second rotating spindle to scrape the grain located at the top of the dryer body.

[0025] Preferably, it further comprises a dust removal fan, wherein the air inlet end of the dust removal fan is connected to the top of the inner cavity of the dryer body, and the air outlet end of the dust removal fan is connected to the outside of the dryer body.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention provides a continuous dryer, comprising a dryer main body, a grain feeding assembly and a discharge assembly, the dryer main body comprising a cold air drying section and at least one hot air drying section, the hot air drying section being located above the cold air drying section, each hot air drying section comprising an upper drying section and a lower slow drying section, the grain being dried by the upper drying section of the i-th hot air drying section and then entering the lower slow drying section of the i+1-th hot air drying section, the grain being kept warm by the lower slow drying section of the i-th hot air drying section and then entering the cold air drying section, and then entering the discharge assembly through a grain outlet after being cooled and dried by the cold air drying section, and the discharge assembly discharges the dried grain.

[0028] The present application can ensure the uniformity of drying crops and the fluidity of grains, and improve the uniformity of grain drying; through the combination of multi-stage hot air drying sections and cold air drying sections, continuous and efficient drying of grains can be achieved. This drying method not only improves the drying efficiency, but also ensures the drying quality of grains; under the combined effect of hot air and slow drying sections, the drying quality of grains is more uniform, avoiding the situation of partial overdrying or overwetting of grains during the drying process; the present application dryer can be applied to the drying of a variety of grains, such as wheat, corn, rice, etc. This helps to meet the needs of different users and improve the utilization rate and economic benefits of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0030] Figure 1 is a schematic diagram of the overall structure at a first viewing angle in one embodiment of the present invention;

[0031] Figure 2 is a schematic diagram of the overall structure at a second viewing angle in one embodiment of the present invention;

[0032] Figure 3 is a schematic diagram of the overall structure of an embodiment of the present invention at a third viewing angle;

[0033] Figure 4 is a schematic diagram of the overall structure at a fourth viewing angle in one embodiment of the present invention;

[0034] Figure 5 is a schematic diagram of the overall structure at a fifth viewing angle in one embodiment of the present invention;

[0035] Figure 6 for Figure 1 A is an enlarged schematic diagram;

[0036] Figure 7 for Figure 4 The enlarged schematic diagram of point B in FIG.

[0037] Figure 8 for Figure 1 The enlarged schematic diagram is shown in Figure 2.

[0038] Fig. 9 It is a structural schematic diagram of a dead zone blanking valve plate in a closed position in one embodiment of the present invention;

[0039] Fig.10It is a structural schematic diagram of the dead zone blanking valve plate in an open position in one embodiment of the present invention.

[0040] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

[0041] Description of Figure Numbers:

[0042] 10. Dryer body; 110. Grain outlet; 120. Hot air drying section; 121. Upper drying section; 1211. First drying bin; 1212. Hot air duct assembly; 12121. First hot air duct assembly; 12122. First air hole; 12123. First material stacking space; 12124. Second hot air duct assembly; 1213. Material drop control assembly; 12131. Horizontal drive cylinder; 12132. First horizontal baffle; 12133. First material drop channel; 12134. Dead zone material drop valve plate; 122. Lower slow section; 130. Cold air drying section; 131. Second drying bin; 132. Cold air duct assembly; 1321 , the first cold air duct assembly; 1322, the second air hole; 1323, the second cold air duct assembly; 1324, the second material stacking space; 133, the discharge control assembly; 1331, the driving mechanism; 1332, the crank slider mechanism; 1333, the second cross baffle; 1334, the second material dropping channel; 20, the grain feeding assembly; 210, the feeding elevator; 30, the discharge assembly; 310, the conveyor belt assembly; 320, the discharge elevator; 330, the grain discharge pipe; 40, the flattening assembly; 410, the driving motor; 420, the speed reduction mechanism; 430, the first rotating spindle; 440, the second rotating spindle; 450, the scraper; 50, the dust removal fan. DETAILED DESCRIPTION

[0043] 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.

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as described in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] Please see attached Figures 1 to 10 In one embodiment of the present invention, a continuous dryer includes a dryer body 10, a grain feeding component 20 and a material discharging component 30, wherein:

[0048] The top of the dryer body 10 is provided with a grain inlet (not shown), and the bottom of the dryer body 10 is provided with a grain outlet 110;

[0049] The grain feeding component 20 is used to input the grain to be dried into the grain feeding port;

[0050] The dryer body 10 includes a cold air drying section 130 and at least one hot air drying section 120, wherein the hot air drying section 120 is located above the cold air drying section 130, and each of the hot air drying sections 120 includes an upper drying section 121 and a lower slow drying section 122, wherein the grain is dried by the upper drying section 121 of the i-th hot air drying section 120 and then enters the lower slow drying section 122 of the i-th hot air drying section 120, and then enters the upper drying section 121 of the i+1-th hot air drying section 120 after being kept warm by the lower slow drying section 122 of the N-th hot air drying section 120, and then enters the cold air drying section 130 after being cooled and dried by the cold air drying section 130, and then enters the discharge assembly 30 through the grain outlet 110; wherein 1≤i≤N-1, i and N are both positive integers;

[0051] The discharge assembly 30 discharges the dried grain.

[0052] Specifically, the grain to be dried is input into the top grain inlet of the dryer body 10 through the grain feeding assembly 20. The grain first enters the hot air drying section 120, each of which includes an upper drying section 121 and a lower slow drying section 122. The grain is subjected to the action of hot air in the upper drying section 121 for preliminary drying. The dried grain enters the lower slow drying section 122 for heat preservation, so that the moisture inside the grain evaporates further and the grain is prevented from being damaged by over-drying. After passing through a hot air drying section 120, the grain enters the next hot air drying section 120 and the above process is repeated. This combination of multi-stage drying and slow drying can ensure that the grain is evenly and fully dried.

[0053] After the grain passes through the lower slow drying section 122 of the last hot air drying section 120, it enters the cold air drying section 130. The cold air drying section 130 is mainly used to cool the grain so that the grain reaches the required dryness and temperature before being discharged. The grain cooled and dried in the cold air drying section 130 enters the discharge assembly 30 through the bottom grain outlet 110 of the dryer body 10, and is finally discharged by the discharge assembly 30.

[0054] In the present application, continuous and efficient drying of grain can be achieved through the combination of a multi-stage hot air drying section 120 and a cold air drying section 130. This drying method not only improves the drying efficiency, but also ensures the drying quality of the grain. Due to the combined effect of the hot air and the slow drying section, the drying quality of the grain is more uniform, avoiding the situation where the grain is locally over-dry or over-wet during the drying process.

[0055] The dryer of the present application can be applied to the drying of various grains, such as wheat, corn, rice, etc. This helps to meet the needs of different users and improve the utilization rate and economic benefits of the equipment.

[0056] Furthermore, the grain feeding component 20 may be a feeding elevator 210, and the discharging component 30 may include a conveyor belt component 310, a discharging elevator 320, and a grain discharging pipe 330, wherein the conveyor belt component 310 receives grain from the grain outlet 110, and then transports the grain to the discharging elevator 320 to a certain height, and then discharges the grain through the grain discharging pipe 330 to achieve loading.

[0057] As a preferred embodiment, each of the upper drying sections 121 includes a first drying bin 1211, a hot air duct assembly 1212 and a material drop control assembly 1213, wherein the hot air duct assembly 1212 includes a first hot air duct assembly 12121 arranged in the first drying bin 1211 and a second hot air duct assembly 12124 connected to the outer wall of the dryer body 10, a first air hole 12122 connected to the first drying bin 1211 is provided on the wall surface of the first hot air duct assembly 12121, an air inlet of the first hot air duct assembly 12121 is connected to an air outlet of the second hot air duct assembly 12124, an air outlet of the first hot air duct assembly 12121 is connected to the outside of the dryer body 10, and an air inlet of the second hot air duct assembly 12124 is connected to an external hot air source;

[0058] The material dropping control component 1213 has an open position and a closed position, wherein when in the open position, the grain in the first drying bin 1211 of the i-th hot air drying section 120 enters the lower buffer section 122 of the i-th hot air drying section 120, and after being kept warm in the lower buffer section 122 of the i-th hot air drying section 120, enters the first drying bin 1211 of the (i+1)-th hot air drying section 120; when in the closed position, the grain stays in the first drying bin 1211.

[0059] Specifically, the hot air duct assembly 1212 includes a first hot air duct assembly 12121 arranged in the first drying bin 1211 and a second hot air duct assembly 12124 connected to the outer wall of the dryer body 10. The external hot air source sends the hot air into the second hot air duct assembly 12124 through the air inlet of the second hot air duct assembly 12124, and then passes through the air outlet of the second hot air duct assembly 12124 to connect with the air inlet of the first hot air duct assembly 12121, so as to send the hot air into the first hot air duct assembly 12121. First air holes 12122 are provided on the wall surface of the first hot air duct assembly 12121. The hot air enters the first drying bin 1211 through these first air holes 12122 to dry the grain in the bin. The dried hot air is discharged to the outside of the dryer body 10 through the air outlet of the first hot air duct assembly 12121.

[0060] The blanking control component 1213 has an open position and a closed position. When the blanking control component 1213 is in the open position, the grain in the first drying bin 1211 of the i-th hot air drying section 120 can enter the lower slow-release section 122 of the i-th hot air drying section 120 through the blanking port. In the lower slow-release section 122, the grain is insulated to further evaporate the moisture inside the grain while preventing the grain from being damaged by over-drying. After passing the slow-release section, the grain enters the first drying bin 1211 of the next hot air drying section 120 again to repeat the above drying process. When the blanking control component 1213 is in the closed position, the grain stays in the first drying bin 1211 and does not enter the lower slow-release section 122, which helps to control the drying progress and ensure the drying quality.

[0061] It is worth noting that the hot air evenly enters the first drying chamber 1211 through the first air hole 12122 on the wall of the first hot air duct assembly 12121, ensuring that the grain is evenly heated during the drying process to avoid partial overdrying or overwetting. The material drop control assembly 1213 can flexibly control the timing of the grain drop to ensure that the residence time and drying degree of the grain during the drying process meet the process requirements. The shape of the first air hole 12122 is preferably a fish scale hole.

[0062] Furthermore, the first hot air duct assembly 12121 includes two layers of first hot air duct rows (not shown) vertically spaced apart, and each of the first hot air duct rows includes a plurality of first hot air ducts evenly spaced apart along the width direction of the dryer body 10, and a first stacking space 12123 is formed between two adjacent first hot air ducts along the width direction.

[0063] Specifically, the design of the multi-layer hot air duct row increases the contact area between the hot air and the grain, allowing the hot air to more fully exchange heat with the grain, thereby improving the drying efficiency.

[0064] As a preferred embodiment, the drop material control component 1213 includes a horizontal driving cylinder 12131 and a first transverse baffle 12132, the bin wall of the first drying bin 1211 is provided with a first through hole for the driving end of the horizontal driving cylinder 12131 to pass through, the width of the first transverse baffle 12132 is smaller than the width of the first drying bin 1211, the first transverse baffle 12132 is connected to the driving end of the horizontal driving cylinder 12131 and moves synchronously with the driving end of the horizontal driving cylinder 12131, the first transverse baffle 12132 is provided with a first drop material channel 12133 corresponding to the first stacking space 12123 one by one, wherein, when in the open position, the first drop material channel 12133 and the first stacking space 12123 are arranged opposite to each other, and when in the closed position, the first drop material channel 12133 and the first stacking space 12123 are staggered so that the food stays in the first drying bin 1211.

[0065] Specifically, the material dropping control component 1213 includes a horizontal driving cylinder 12131 and a first cross baffle 12132. The wall of the first drying bin 1211 is provided with a first through hole for the driving end of the horizontal driving cylinder 12131 to pass through. The horizontal driving cylinder 12131 is connected to the first cross baffle 12132 through this hole. The width of the first cross baffle 12132 is smaller than the width of the first drying bin 1211, so that when the first cross baffle 12132 moves, space for material dropping or blocking can be reserved. When the driving end of the horizontal driving cylinder 12131 extends out, it drives the first cross baffle 12132 to move horizontally. A first material dropping channel 12133 corresponding to the first material stacking space 12123 is opened on the first cross baffle 12132. The shape and position of the first material dropping channel 12133 match the first material stacking space 12123. When the first transverse baffle 12132 is in the open position, the first material drop channel 12133 and the first material stacking space 12123 are arranged opposite to each other, and the grain can fall from the first drying bin 1211 into the lower slow recovery section 122 through these channels. When the first transverse baffle 12132 is in the closed position, the first material drop channel 12133 and the first material stacking space 12123 are staggered. At this time, the grain is blocked by the first transverse baffle 12132 and stays in the first drying bin 1211.

[0066] In this embodiment, by accurately controlling the horizontal driving cylinder 12131, the precise movement of the first transverse baffle 12132 can be achieved, thereby accurately controlling the timing of grain dropping.

[0067] As another preferred embodiment, the blanking control component 1213 also includes a dead zone blanking valve plate 12134, which is hinged to the inner wall of the first drying bin 1211, and the dead zone blanking valve plate 12134 is located directly above the driving end of the horizontal driving cylinder 12131, wherein, when in the open position, the dead zone blanking valve plate 12134 is in a vertical state so that the first blanking channel 12133 and the first stacking space 12123 are arranged opposite each other, and when in the closed position, the dead zone blanking valve plate 12134 is in an inclined state, and the dead zone blanking valve plate 12134 covers the corresponding first blanking channel 12133 so that the food stays in the first drying bin 1211.

[0068] In this embodiment, Figure 1 and Figure 6 As shown, in addition to the original horizontal driving cylinder 12131 and the first cross baffle 12132, the blanking control component 1213 also adds a dead zone blanking valve plate 12134. The dead zone blanking valve plate 12134 is hinged to the inner wall of the first drying bin 1211, allowing the dead zone blanking valve plate 12134 to switch between vertical and horizontal states. The dead zone blanking valve plate 12134 is located directly above the driving end of the horizontal driving cylinder 12131, and forms a complementary blanking control mechanism with the first cross baffle 12132.

[0069] like Figure 6 As shown, since the driving end of the horizontal driving cylinder 12131 has a movement stroke, in order to adapt to this movement stroke, this embodiment reserves a certain gap between the left end of the first cross baffle 12132 and the inner wall of the first drying bin 1211. If no treatment is done here, the grain will fall directly. Therefore, this embodiment designs a dead zone blanking valve plate 12134. The dead zone blanking valve plate 12134 and the first cross baffle 12132 work together to more reliably control the falling of grain.

[0070] As a preferred embodiment, the cold air drying section 130 includes a second drying chamber 131, a cold air duct assembly 132 and a discharging control assembly 133, wherein the cold air duct assembly 132 includes a first cold air duct assembly 1321 arranged in the second drying chamber 131 and a second cold air duct assembly 1323 connected to the outer wall of the dryer body 10, a second air hole 1322 connected to the second drying chamber 131 is opened on the wall surface of the first cold air duct assembly 1321, an air inlet of the first cold air duct assembly 1321 is connected to an air outlet of the second cold air duct assembly 1323, an air outlet of the first cold air duct assembly 1321 is connected to the outside of the dryer body 10, and an air inlet of the second cold air duct assembly 1323 is connected to an external cold air source;

[0071] The discharge control component 133 has an open position and a closed position, wherein, when in the open position, the grain in the second drying bin 131 enters the discharge component 30 through the grain outlet 110 ; when in the closed position, the grain stays in the second drying bin 131 .

[0072] Specifically, the cold air duct assembly 132 includes a first cold air duct assembly 1321 arranged in the second drying bin 131 and a second cold air duct assembly 1323 connected to the outer wall of the dryer body 10. The external cold air source sends cold air into the second cold air duct assembly 1323 through the air inlet of the second cold air duct assembly 1323, and then passes through the air outlet of the second cold air duct assembly 1323 to connect with the air inlet of the first cold air duct assembly 1321, so as to send the cold air into the first cold air duct assembly 1321. Second air holes 1322 are provided on the wall surface of the first cold air duct assembly 1321. Cold air or normal temperature air enters the second drying bin 131 through these second air holes 1322 to cool and dry the food in the bin. The cooled cold air is discharged to the outside of the dryer body 10 through the air outlet of the first cold air duct assembly 1321, completing a cold air cycle.

[0073] The discharge control component 133 has an open position and a closed position, and is used to control the discharge of the grain in the second drying bin 131. When the discharge control component 133 is in the open position, the grain in the second drying bin 131 can enter the discharge component 30 through the grain outlet 110 and then be discharged from the dryer. When the discharge control component 133 is in the closed position, the grain is blocked in the second drying bin 131 and will not be discharged through the grain outlet 110.

[0074] Furthermore, the first cold air duct assembly 1321 includes a plurality of first cold air ducts evenly spaced apart along the width direction of the dryer body 10 , and a second stacking space 1324 is formed between two adjacent first cold air ducts along the width direction.

[0075] Specifically, in this embodiment, a plurality of first cold air ducts are evenly arranged along the width direction of the dryer body 10 , so that the cold air can be more evenly distributed in the second drying chamber 131 .

[0076] As a preferred embodiment, the discharge control assembly 133 includes a driving mechanism 1331, a crank slider mechanism 1332 and a second transverse baffle 1333, the crank slider mechanism 1332 is connected to the driving mechanism 1331, the second drying bin 131 is provided with a second through hole matching the crank slider mechanism 1332, and the width of the second transverse baffle 1333 is smaller than the width of the second drying bin 131;

[0077] The second cross baffle 1333 is provided with a second material dropping channel 1334 corresponding one to one with the second material stacking space 1324. The second cross baffle 1333 is connected to the crank slider mechanism 1332 and reciprocates in the lateral direction with the crank slider mechanism 1332 to control the connecting width between the second material dropping channel 1334 and the second material stacking space 1324, thereby adjusting the amount of grain dropping.

[0078] Specifically, the driving mechanism 1331 drives the crank slider mechanism 1332 to make the second cross baffle 1333 reciprocate in the horizontal direction. The width of the second cross baffle 1333 is smaller than the width of the second drying bin 131, so that the second cross baffle 1333 can reciprocate in the horizontal direction in the drying bin. The second cross baffle 1333 is provided with a second blanking channel 1334 corresponding to the second stacking space 1324.

[0079] By controlling the moving position of the second cross baffle 1333, the connection width between the second feeding channel 1334 and the second stacking space 1324 can be adjusted. When the connection width increases, the amount of grain falling increases; when the connection width decreases, the amount of grain falling decreases. This adjustment method can accurately control the grain discharge amount according to actual needs.

[0080] As another preferred embodiment, a flattening assembly 40 is also included, and the flattening assembly 40 includes a driving motor 410, a speed reduction mechanism 420, a first rotating spindle 430, a second rotating spindle 440 and a scraper 450, wherein:

[0081] The input end of the speed reduction mechanism 420 is connected to the output end of the driving motor 410, the first rotating main shaft 430 is rotatably connected to the dryer body 10, and the upper end of the first rotating main shaft 430 is connected to the output end of the speed reduction mechanism 420;

[0082] The second rotating main shaft 440 is connected to the first rotating main shaft 430 and moves synchronously with the first rotating main shaft 430 . The scraper 450 is connected to the bottom of the second rotating main shaft 440 and moves synchronously with the second rotating main shaft 440 to scrape the grain located at the top of the dryer body 10 .

[0083] Specifically, the driving motor 410 drives the first rotating main shaft 430 to rotate through the speed reduction mechanism 420, thereby driving the second rotating main shaft 440 and the scraper 450 to move synchronously, and the scraper 450 performs a flattening operation on the grain at the top of the dryer body 10, so that the grain can be spread out quickly and evenly. This design improves the efficiency of flattening the grain, allows the grain to be more fully exposed to the cold wind, and improves the drying effect.

[0084] Furthermore, it also includes a dust removal fan 50 , the air inlet end of the dust removal fan 50 is connected to the top of the inner cavity of the dryer body 10 , and the air outlet end of the dust removal fan 50 is connected to the outside of the dryer body 10 .

[0085] Specifically, the dust removal fan 50 is connected with the top of the inner cavity of the dryer body 10 through its air inlet end, so as to directly extract the dust and exhaust gas generated during the drying process.

[0086] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A continuous drying machine, characterized in that: It includes a dryer body, a grain feeding component and a material discharging component, wherein: The top of the dryer body is provided with a grain inlet, and the bottom of the dryer body is provided with a grain outlet; The grain feeding component is used to input the grain to be dried into the grain feeding port; The dryer body comprises a cold air drying section and at least one hot air drying section, the hot air drying section is located above the cold air drying section, and each of the hot air drying sections comprises an upper drying section and a lower slow drying section, wherein the grain is dried in the upper drying section of the i-th hot air drying section and then enters the lower slow drying section of the i-th hot air drying section, and then enters the upper drying section of the i+1-th hot air drying section after being kept warm in the lower slow drying section of the i-th hot air drying section, and then enters the cold air drying section after being cooled and dried in the cold air drying section, and then enters the discharge assembly through the grain outlet; wherein, 1≤i≤N-1, i and N are both positive integers; The discharge component discharges the dried grain.

2. The continuous drying machine according to claim 1, characterized in that: Each of the upper drying sections comprises a first drying bin, a hot air duct assembly and a material dropping control assembly, wherein the hot air duct assembly comprises a first hot air duct assembly arranged in the first drying bin and a second hot air duct assembly connected to the outer wall of the dryer body, a first air hole connected to the first drying bin is provided on the wall surface of the first hot air duct assembly, an air inlet of the first hot air duct assembly is connected to an air outlet of the second hot air duct assembly, an air outlet of the first hot air duct assembly is connected to the outside of the dryer body, and an air inlet of the second hot air duct assembly is connected to an external hot air source; The material dropping control component has an open position and a closed position, wherein when in the open position, the grain in the first drying bin of the i-th hot air drying section enters the lower buffer section of the i-th hot air drying section, and after being kept warm in the lower buffer section of the i-th hot air drying section, enters the first drying bin of the (i+1)-th hot air drying section; when in the closed position, the grain stays in the first drying bin.

3. The continuous drying machine according to claim 2, characterized in that: The first hot air duct assembly includes two layers of first hot air duct rows arranged at intervals along the vertical direction, each of the first hot air duct rows includes a plurality of first hot air ducts evenly arranged at intervals along the width direction of the dryer body, and a first stacking space is formed between two adjacent first hot air ducts along the width direction.

4. The continuous drying machine according to claim 3, characterized in that: The material dropping control assembly includes a horizontal driving cylinder and a first transverse baffle, the bin wall of the first drying bin is provided with a first through hole for the driving end of the horizontal driving cylinder to pass through, the width of the first transverse baffle is smaller than the width of the first drying bin, the first transverse baffle is connected to the driving end of the horizontal driving cylinder and moves synchronously with the driving end of the horizontal driving cylinder, the first transverse baffle is provided with a first material dropping channel corresponding to the first material stacking space one by one, wherein when in the open position, the first material dropping channel and the first material stacking space are arranged opposite to each other, and when in the closed position, the first material dropping channel and the first material stacking space are staggered so that the food stays in the first drying bin.

5. The continuous drying machine according to claim 4, characterized in that: The blanking control assembly also includes a dead zone blanking valve plate, which is hinged to the inner wall of the first drying bin, and is located directly above the driving end of the horizontal driving cylinder, wherein when in the open position, the dead zone blanking valve plate is in a vertical state so that the first blanking channel and the first stacking space are arranged opposite each other, and when in the closed position, the dead zone blanking valve plate is in an inclined state, and the dead zone blanking valve plate covers the corresponding first blanking channel so that the food stays in the first drying bin.

6. The continuous drying machine according to claim 1, characterized in that: The cold air drying section includes a second drying bin, a cold air duct assembly and a material discharging control assembly, wherein the cold air duct assembly includes a first cold air duct assembly arranged in the second drying bin and a second cold air duct assembly connected to the outer wall of the dryer body, a second air hole communicating with the second drying bin is opened on the wall surface of the first cold air duct assembly, an air inlet of the first cold air duct assembly is communicated with an air outlet of the second cold air duct assembly, an air outlet of the first cold air duct assembly is communicated with the outside of the dryer body, and an air inlet of the second cold air duct assembly is communicated with an external cold air source; The discharge control component has an open position and a closed position, wherein, when in the open position, the grain in the second drying bin enters the discharge component through the grain outlet; when in the closed position, the grain stays in the second drying bin.

7. The continuous drying machine according to claim 6, characterized in that: The first cold air duct assembly includes a plurality of first cold air ducts evenly spaced apart along the width direction of the dryer body, and a second stacking space is formed between two adjacent first cold air ducts along the width direction.

8. The continuous drying machine according to claim 7, characterized in that: The discharge control assembly includes a driving mechanism, a crank slider mechanism and a second transverse baffle, the crank slider mechanism is connected to the driving mechanism, the second drying bin is provided with a second through hole matching the crank slider mechanism, and the width of the second transverse baffle is smaller than the width of the second drying bin; The second cross baffle is provided with a second material dropping channel corresponding one-to-one to the second material stacking space. The second cross baffle is connected to the crank slider mechanism and reciprocates in the lateral direction with the crank slider mechanism to control the connecting width between the second material dropping channel and the second material stacking space, thereby adjusting the amount of grain dropping.

9. The continuous drying machine according to claim 1, characterized in that: It also includes a flattening assembly, which includes a driving motor, a speed reduction mechanism, a first rotating spindle, a second rotating spindle and a scraper, wherein: The input end of the speed reduction mechanism is connected to the output end of the driving motor, the first rotating main shaft is rotatably connected to the dryer body, and the upper end of the first rotating main shaft is connected to the output end of the speed reduction mechanism; The second rotating spindle is connected to the first rotating spindle and moves synchronously with the first rotating spindle. The scraper is connected to the bottom of the second rotating spindle and moves synchronously with the second rotating spindle to scrape the grain located at the top of the dryer body.

10. The continuous drying machine according to claim 1, characterized in that: It also includes a dust removal fan, the air inlet end of the dust removal fan is connected to the top of the inner cavity of the dryer body, and the air outlet end of the dust removal fan is connected to the outside of the dryer body.

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