An integrated low-temperature circulation dryer for grains

Abstract

The present invention relates to the technical field of grain drying equipment, specifically an integrated low-temperature circulation dryer for grains, including an outer frame, a gas furnace, a circulation feeder, a control box, a drawer, a top plate, a moisture discharge frame, a horizontal feeder, a side plate, a hot air circulation hole, a reflux frame, a material receiving plate, and a material discharge plate, and also includes a short shaft, a high-temperature resistant motor, a chain, a copy plate adjustment component and a hot air control component, wherein the side plates are arranged parallel to and installed between the inner walls of the outer frame, the top plate is installed on the inner periphery of the outer frame, and the top plate fits the top of the side plate, and the hot air circulation holes are staggered on the side walls of the side plates. The present invention solves the problem that the integrated low-temperature circulation dryer for grains is limited by the maximum heating temperature of grains, and the drying slowness ratio value cannot be adjusted to a suitable value when drying different types of grains by flexibly adjusting the copy plate angle before putting in grains and adaptively introducing sufficient hot air into the rear section of the copy plate.

Description

Technical Field

[0001] The invention relates to the technical field of grain drying equipment, and in particular to an integrated low-temperature circulation dryer for grains. Background Art

[0002] Mechanized drying is a key link in the full mechanization of grain production. Accelerating the mechanization of grain drying is of great significance to improving grain quality, reducing grain losses, and promoting grain production and harvest. At present, the commonly used grain dryers are divided into two types: continuous dryers and low-temperature circulation dryers. The low-temperature circulation dryer has a different structural principle from the continuous dryer. It mainly uses the cross-flow and mixed flow methods. Through this structural method, it can dry more varieties of wet grains with strong flexibility. At the same time, it is also suitable for heating and drying crops such as seeds that are sensitive to temperature. Compared with continuous dryers, low-temperature circulation dryers can better meet the needs of crop diversity. At the same time, the low-temperature circulation dryer has a low burst rate when heating and drying grains, and the appearance is better than that of continuous dryers. Therefore, low-temperature circulation dryers are more widely used.

[0003] The working process of the low-temperature circulation dryer is a cycle of drying, transfer, and slow drying. After the high-temperature hot air enters the drying layer through the hot air duct, it passes through the grain layer and is then sucked away by the fan through the air outlet duct. In this process, the grain is dried and heated, and some water vapor is also taken away during the forced ventilation process.

[0004] In actual grain drying operations, it is found that the angle of the lifting plate of the existing integrated grain low-temperature circulation dryer is fixed. Grains harvested in different seasons in the same region include rice, wheat, corn, mung beans, etc. Due to differences in particle size and humidity during drying, the optimal drying slow-down ratio during drying operations is different. The angle of the lifting plate is fixed. In order to ensure the quality of drying different grain crops by the same integrated grain low-temperature circulation dryer, the heating temperature of the drying furnace needs to be adjusted. However, when the highest temperature at which the grains are heated in the dryer exceeds 60°C, the cracking rate will increase significantly. Therefore, the adjustable range of the drying furnace temperature is small. As a result, when the same integrated grain low-temperature circulation dryer is used to dry different grain crops, if the types of grains are different or the humidity of the same grains is greatly different, the value of the drying slow-down ratio cannot be adjusted in time, resulting in the low-temperature circulation drying operation of the grains being unable to achieve a better balance between drying quality and drying speed.

[0005] Therefore, an integrated low-temperature circulation dryer for grains is proposed. Summary of the invention

[0006] The object of the present invention is to provide an integrated low-temperature circulation dryer for grains. By flexibly adjusting the angle of the lifting plate before putting the grains in and adaptively introducing sufficient hot air to the rear section of the lifting plate, the problem that the integrated low-temperature circulation dryer for grains is limited by the maximum heating temperature of the grains and the drying slow-down ratio cannot be adjusted to an appropriate value when drying different types of grains is solved. The present invention is flexible in use and can perform drying operations at a higher speed while ensuring the drying quality of the grain crops when drying different types of grain crops, thereby effectively improving the drying efficiency of the grain crops.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] "Drying slow-down ratio" is the ratio of the slow-down time of grains to the drying time. It is a very important design parameter for the design of low-temperature circulating dryers and has an important impact on the drying effect and quality of grains. However, the optimal drying slow-down ratios for different crops are different. In the rice drying process, the drying slow-down ratio of the circulating dryer is between 3:1 and 7:1. During the rice drying process, the ratio of the slow-down time to the drying time can vary between 3:1 and 7:1. Controlling the drying slow-down ratio within an appropriate range can ensure the quality of rice and reduce the cracking rate. The drying slow-down ratio of crops such as wheat and corn is not a fixed range, but varies according to the humidity of the crops. Therefore, the integrated low-temperature circulating dryer for grains needs to adjust multiple parameters according to the type and humidity of the grains in actual production, thereby ensuring the drying quality of the grains and controlling the cracking rate at a low level. However, the temperature adjustment range of the gas furnace is limited, and the air intake volume parameters are also limited by the heating temperature of the gas furnace, which causes great limitations in the adjustment. For this reason, the technical solution designs the angle of the copying plate. Before the drying operation, the copying plate is pre-controlled and adjusted to a suitable angle, thereby adjusting the drying slowness ratio to a suitable range without the need to adjust multiple other parameters.

[0009] An integrated low-temperature circulation dryer for grains and cereals, comprising an outer frame, a gas furnace, a circulation feeder, a control box, a drawer, a top plate, a moisture discharge frame, a horizontal feeder, a side plate, a hot air circulation hole, a reflux frame, a receiving plate, a discharge plate, a short shaft, a high-temperature resistant motor, a chain, a copy plate adjustment component and a hot air regulation component. The side plates are arranged parallely and installed between the inner walls of the outer frame, the top plate is installed in the inner periphery of the outer frame, and the top plate is fitted with the top of the side plates, the hot air circulation holes are staggeredly arranged on the side walls of the side plates, the short shaft rotates and penetrates the side plates, and the high-temperature resistant motor It is installed on the outer wall of the side panel through a bracket, the chain is connected between the output shaft of the high-temperature resistant motor and the short shaft through a sprocket, the copying plate adjusting component corresponding to the hot air flow hole is installed between the side walls of the two side panels, and the copying plate adjusting component is fixedly connected to the short shaft, the hot air regulating component is installed on the inner side of the copying plate adjusting component, the length value of the hot air regulating component when in a horizontal state is less than half of the side panel spacing value, the opening and closing angle of the copying plate adjusting component is changed when the high-temperature resistant motor drives the short shaft to rotate, and the spacing between the two ends of the hot air regulating component changes adaptively when the opening and closing angle of the copying plate adjusting component changes.

[0010] In the above scheme, when the copying plate adjusting component puts the grain crops into the drying space surrounded by the side panels and the outer frame, the copying plate adjusting component can quickly adjust the copying plate angle according to the type of grain crops, thereby adjusting the drying slowness ratio to the optimal ratio range corresponding to the grain crops. In addition, since the temperature of the hot air is relatively high when it just flows out from the hot air circulation hole, the temperature slowly decreases after passing through the grain crops in turn. Therefore, the drying effect of the grain crops on the side far away from the gas furnace at the same height is significantly lower than that of the grain crops on the side close to the gas furnace. For this reason, when the copying plate adjusting component changes the copying plate angle, the opening angle of the hot air regulating component is changed accordingly. A part of the hot air does not need to pass through the grain crops and flows out from the middle position close to the copying plate adjusting component, and then blows directly to the grain crops at the rear section, thereby ensuring the drying temperature of the grain crops at the rear section, and then ensuring the uniformity of the grain crop drying operation at the same height.

[0011] Preferably, the copying plate adjustment assembly comprises a top cover, a circular hole, a copying plate, a limit groove, a limit block, a connecting plate, a screw, a worm gear, and a connecting shaft. The top cover is fixedly installed between the side walls of the two side plates, the circular holes are evenly spaced on the surface of the top cover below, the copying plate is symmetrically rotatably installed at the bottom of the top cover, the limit groove is opened on the inner wall of the copying plate, the limit block is slidably arranged in the limit groove, the connecting plate is rotatably connected between the side walls of the two limit blocks, the screw is rotatably installed between adjacent top covers, and the screw is threadedly connected to the connecting plate, the worm gear is sleeved and fixed on the outer periphery of the screw, the connecting shaft is rotatably installed between the side walls of the two side plates, and the connecting shaft is transmission-connected with the worm gear, the end of the connecting shaft is fixedly connected to the end of the short shaft, a worm is installed on the outer periphery of the connecting shaft, and the worm is meshed with the worm gear, the ends of the screw on the same axial direction are connected to each other, the thread groove of the screw is opened between the partitions, and the height value of the thread groove is equal to the length value of the limit groove.

[0012] In the above scheme, since the copying board adjustment components at adjacent heights are staggered, it means that the number of copying board adjustment components at the staggered heights is equal, and the difference in the number of copying board adjustment components at adjacent heights is one. Therefore, the copying board adjustment components in the same axial direction are connected by screw transmission. It can be achieved that only power input devices are set on the copying board adjustment components of the top two layers, which can drive multiple copying board adjustment components below to rotate synchronously for the same angle adjustment.

[0013] Preferably, the surface of the copy board is symmetrically installed with side baffles, the side walls of the side baffles are slidably fitted with the side walls of the side panels, and the top of the side baffles extends to below the top cover.

[0014] In the above scheme, when the lifting plate is adjusted to a nearly vertical state and the grain crops fall and are discharged at the maximum speed, the side baffle plate can block the hot air flow holes on the side away from the lifting plate when the lifting plate is in a nearly vertical state, thereby preventing the grain crops from flowing into the space between the partition plate and the outer frame through the gap between the side away from the lifting plate and the hot air flow holes.

[0015] Preferably, the worm gear is arranged above the corresponding connecting plate, and the worm gear is arranged above the limiting groove.

[0016] In the above scheme, by designing the position of the worm wheel, when the connecting plate is driven to move upward by the transmission action of the worm wheel and the worm, the connecting plate will not interfere with the worm wheel in movement, thereby ensuring the integrity of the connecting plate movement.

[0017] Preferably, the hot air regulating assembly comprises a partition, a universal seat and a connecting strip, two of the partitions are symmetrically arranged on the inner side of the copying plate of the same copying plate regulating assembly, and the same end of the partition is rotatably connected to the top cover, the universal seat is installed on the side wall away from the partition, and the universal seat is arranged away from one end of the partition rotatably connected to the top cover, one end of the connecting strip is rotatably connected to the universal seat, and the other end of the connecting strip is rotatably connected to the adjacent copying plate side wall.

[0018] In the above scheme, since the lifting plate rotates horizontally, through the cooperation of the universal seat and the connecting strip, when the lifting plate rotates, one end of the partition rotates relatively with the top cover, and the other end rotates adaptively due to the joint action of the lifting plate, thereby changing the spacing at the other end of the partition, and the hot air flowing through the partitions blows directly to the grains at the rear. Therefore, when changing the drying slow drying ratio, the drying effect of the rear grain crops can be guaranteed and the drying uniformity of the grain crops can be maintained.

[0019] Preferably, adjacent sides of the partition are both constructed with inclined surfaces, and the inclined surfaces are arranged at an end of the partition away from the end rotatably connected to the top cover.

[0020] In the above scheme, the inclined surface helps hot air to quickly enter between the partitions.

[0021] Preferably, one end of the partition plate having the inclined surface extends to the outside of the corresponding screw rod, and when the partition plate is in a parallel state, the end of the partition plate is in contact with the side wall of the side plate.

[0022] In the above scheme, the partition can also provide a protective effect for the thread groove of the screw, preventing crops from entering between the partitions and affecting the subsequent smooth rotation of the screw, thereby maintaining the long-term stable operation of the copying plate adjustment component.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. Before using this equipment, the optimal drying slow-down ratio of the grain crops is calculated according to the types of grain crops to be dried in the next batch and the measured moisture of the grain crops, and then the angle of the copying plate is adjusted accordingly. In this way, when drying different types of grain crops, the drying quality of the grain crops can be fully guaranteed, and the falling speed of the grain crops can be controlled within the maximum value within the corresponding range, thereby maintaining the drying efficiency at a high level.

[0025] 2. Through the set scissor plate adjustment component and hot air control component, when the scissor plate adjustment component starts to change the scissor plate angle, it can adaptively drive the partition to rotate, so that the spacing at the same end of the partition changes, and the angle between the two partitions changes, and then the amount of hot air entering the middle part of the corresponding scissor plate adjustment component through the hot air flow hole changes. This part of the hot air does not exchange heat with the front section of the grain crops but maintains a higher temperature. Then it is blown out from the end of the partition to exchange heat with the rear section of the grain crops, thereby fully ensuring the drying quality of the grain crops away from the gas furnace side, achieving uniform drying of grain crops at the same height at the same time, and thus improving the drying quality of the grain crops.

[0026] 3. Through the set lifting plate adjustment component, when the dried crops need to be discharged, the gravity of the crops is used to assist the high-temperature resistant motor to adjust the lifting plate to a nearly vertical state, and then the falling speed of the crops is adjusted to the fastest, so as to discharge the input crops as quickly as possible, thereby shortening the crop discharge time and improving the drying efficiency when the crops need to be replaced later. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the internal structure of the side panel of the present invention;

[0029] Figure 3 It is a schematic diagram of the internal structure of the outer frame of the present invention;

[0030] Figure 4 It is a structural schematic diagram of a single copy board adjustment component of the present invention;

[0031] Figure 5 It is a cross-sectional view of the copy board adjustment assembly of the present invention;

[0032] Figure 6 For the present invention Figure 5 A magnified view of the structure at center A;

[0033] Figure 7 It is an exploded view of the copy board adjustment assembly of the present invention;

[0034] Figure 8 It is a schematic structural diagram of the hot air regulating component of the present invention.

[0035] In the figure: 1. outer frame; 2. gas furnace; 3. circulation feeder; 4. control box; 5. extractor; 6. top plate; 7. moisture discharge frame; 8. horizontal feeder; 9. side plate; 10. hot air circulation hole; 11. short shaft; 12. high temperature resistant motor; 13. chain; 14. return frame; 15. receiving plate; 16. unloading plate; 17. copying plate adjustment component; 18. hot air regulation component; 171. top cover; 172. round hole; 173. copying plate; 174. side baffle; 175. limit groove; 176. limit block; 177. connecting plate; 178. screw; 179. worm wheel; 1710. connecting shaft; 17101. worm; 181. partition; 1811. inclined surface; 182. universal seat; 183. connecting strip. DETAILED DESCRIPTION

[0036] 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.

[0037] See also Figures 1 to 8 The present invention provides an integrated low-temperature circulation dryer for grains, and the technical solution is as follows:

[0038] Reference Figures 1 to 3, an integrated low-temperature circulation dryer for grains, comprising an outer frame 1, a gas furnace 2, a circulation feeder 3, a control box 4, a drawer 5, a top plate 6, a moisture discharge frame 7, a horizontal feeder 8, a side plate 9, a hot air flow hole 10, a reflux frame 14, a receiving plate 15, and a discharge plate 16. The gas furnace 2 is installed on an outer wall of one side of the outer frame 1, the air inlet of the gas furnace 2 is located outside the outer frame 1, the air outlet of the gas furnace 2 extends to the inner side of the outer frame 1, and the exhaust gas after combustion of the gas furnace 2 enters the inner side of the outer frame 1. The circulation feeder 3, the control box 4 and the drawer 5 are all installed on the side wall of the outer frame 1, wherein the circulation feeder 3 is used to continuously re-feed the fallen grains to a high position inside the outer frame 1, and the drawer 5 is used to release the grains at a higher speed when initially releasing the grain crops. The drying space formed by the outer frame 1 and the side panels 9 is filled with food crops so as to be quickly filled with food crops. The moisture exhaust frame 7 is installed on the outer wall of the outer frame 1 away from the gas furnace 2, and the end of the moisture exhaust frame 7 extends to the inner side of the outer frame 1. The horizontal feeder 8 is installed on the surface of the top plate 6, and the end of the horizontal feeder 8 is connected to the circulating feeder 3, which is used to evenly spread the food crops dropped to a high place horizontally; it also includes a short shaft 11, a high temperature resistant motor 12, a chain 13, a copying plate adjustment component 17 and a hot air regulation component 18. The side panels 9 are arranged in parallel and installed between the inner walls of the outer frame 1, the top panel 6 is installed on the inner periphery of the outer frame 1, and the top panel 6 is fitted with the top of the side panels 9. The hot air circulation holes 10 are staggered on the side walls of the side panels 9, and the hot air circulation holes 10 are staggered in the same straight line direction. The hot gas circulation holes 10 form a hot gas circulation channel, and the exhaust gas enters between the side plates 9 from the hot gas circulation holes 10 on the side plate 9 close to the gas furnace 2. When the exhaust gas passes between the adjacent side plates 9, due to the low density of the hot gas, a part of the hot gas continuously flows upward, and when passing through the upper grain crops, it takes away the moisture in the grain crops to form high-humidity air, and then is discharged from the moisture discharge frame 7. The remaining exhaust gas passes through the grain crops and flows out from the hot gas circulation holes 10 on the other side plate 9, re-enters the gas furnace 2 through the reflux frame 14, and circulates after mixing with the exhaust gas after combustion, thereby reducing the energy consumption of the gas furnace 2; the shoveling plate adjustment component 17 is located above and outside the corresponding hot gas circulation channel, and the short shaft 11 rotates to penetrate the side plate 9. The shoveling plate adjustment components 17 of the top two layers are respectively It is connected to a short shaft 11. When the short shaft 11 rotates, the short shaft 11 provides power for the copy board adjustment component 17. The high temperature resistant motor 12 is installed on the outer wall of the side plate 9 through a bracket. The chain 13 is connected between the output shaft of the high temperature resistant motor 12 and the short shaft 11 through a sprocket. The output shaft of the high temperature resistant motor 12 and the short shaft 11 are both equipped with sprockets. The chain 13 is connected between the two sprockets to transmit the power of the high temperature resistant motor 12 to the short shaft 11, and then the copy board adjustment component 17 is driven to start through the short shaft 11. The copy board adjustment component 17 corresponding to the hot air circulation hole 10 is installed between the side walls of the two side plates 9, and the copy board adjustment component 17 is fixedly connected to the short shaft 11. The copy board adjustment component 17 below the upper two layers is not connected to the short shaft 11. Refer to the attached Figure 2, the number of short shafts 11 only needs to be set to 7, a single high-temperature resistant motor 12 drives three short shafts 11 to rotate at the same time, and the short shaft 11 in the middle position of the second layer is connected to the adjacent short shaft 11 by transmission; the hot air regulating component 18 is rotatably installed on the inner side of the copying plate regulating component 17, one end of the hot air regulating component 18 is close to the side plate 9 on the side close to the gas furnace 2, and the other end extends to the inner side of the copying plate regulating component 17, but not to the middle position of the inner side of the copying plate regulating component 17, and the high-temperature resistant motor 12 drives the short shaft 11 to rotate to change the opening and closing angle of the copying plate regulating component 17. When the opening and closing angle of the copying plate regulating component 17 changes, the grain crops are intercepted and blocked by the copying plate regulating component 17 when falling, resulting in a change in the falling speed of the grain crops, the angle of the copying plate 173 increases, and the falling speed of the grain crops from the surface of the copying plate 173 slows down, resulting in an increase in the residence time of the grain crops in the drying section, while the residence time in the slow-su zone is relatively reduced, thereby reducing the value of the drying slow-su ratio to an appropriate size. On the contrary, the angle of the lifting plate 173 is reduced, which increases the residence time of the material in the slow-drying zone, allowing the material to have more time to redistribute its internal moisture, thereby increasing the drying slow-drying ratio to an appropriate value; when the opening and closing angle of the lifting plate adjusting component 17 changes, the distance between the two ends of the hot air regulating component 18 changes adaptively. When the drying slow-drying ratio changes, the opening angle of the hot air regulating component 18 is changed accordingly, and a part of the hot air is directly blown to the middle position of the lifting plate adjusting component 17, and then heat-exchanges with the grain crops in the rear section, so as to avoid the temperature of the hot air lowering after heat exchange with the grain crops in the front section, and then heat-exchanging with the grain crops in the rear section, resulting in the grain crops in the rear section being dried less effectively than the grain crops in the front section, thereby ensuring the uniformity of drying of the grain crops at the same height.

[0039] In order to quickly adjust the value of the drying slow drying ratio before putting the food crops, as an embodiment of the present invention, refer to Figures 4 to 7The copying plate adjustment assembly 17 includes a top cover 171, a circular hole 172, a copying plate 173, a limiting groove 175, a limiting block 176, a connecting plate 177, a screw 178, a worm gear 179, and a connecting shaft 1710. The top cover 171 is fixedly installed between the side walls of the two side plates 9, and the circular holes 172 are evenly spaced on the surface of the top cover 171 below. The copying plate 173 is symmetrically rotated and installed at the bottom of the top cover 171. The limiting groove 175 is opened on the inner wall of the copying plate 173. The limit block 176 is slidably arranged in the limit groove 175, the connecting plate 177 is rotatably connected between the side walls of the two limit blocks 176, the screw 178 is rotatably installed between the adjacent top covers 171, and the screw 178 is threadedly connected to the connecting plate 177, the worm gear 179 is sleeved and fixed on the outer periphery of the screw 178, the connecting shaft 1710 is rotatably installed between the side walls of the two side plates 9, and the connecting shaft 1710 is transmission-connected to the worm gear 179, and the end of the connecting shaft 1710 is It is fixedly connected to the end of the short shaft 11, and a worm 17101 is installed on the outer periphery of the connecting shaft 1710, and the worm 17101 is meshed with the worm wheel 179, and the ends of the screw 178 on the same axial direction are connected to each other, and the thread groove of the screw 178 is opened between the partitions 181, and the height value of the thread groove is equal to the length value of the limit groove 175; the output shaft of the high temperature resistant motor 12 drives the short shaft 11 to rotate through the sprocket and chain 13, and the connecting shaft 1710 in the upper two-layer copying plate adjustment assembly 17 rotates under the drive of the short shaft 11, and the worm 17101 rotates with the rotation of the connecting shaft 1710 and drives the worm wheel 179 to rotate, and the corresponding screw 178 rotates adaptively, and the height of the connecting plate 177 threadedly connected to the screw 178 changes, so that the height of the limit blocks 176 at both ends of the connecting plate 177 changes, and the limit blocks 176 thereby pull the symmetrical copying plates 173 to rotate, and adjust the copying plates 173 to a suitable angle.

[0040] As an embodiment of the present invention, refer to Figure 4 The surface of the shoveling plate 173 is symmetrically installed with side baffles 174, the side walls of the side baffles 174 are slidably fitted with the side walls of the side plates 9, and the top of the side baffles 174 extends to the bottom of the top cover 171. When the shoveling plate 173 is adjusted to a nearly vertical state, there is a gap between the side of the shoveling plate 173 away from the hot air flow hole 10. At this time, the hot air flow hole 10 on the side of the shoveling plate 173 away from the deflection of the side baffles 174 can be blocked to prevent the crops from flowing between the partition 181 and the outer frame 1.

[0041] As an embodiment of the present invention, refer to Figure 6 The worm wheel 179 is arranged above the corresponding connecting plate 177, and the worm wheel 179 is arranged above the limiting groove 175. When the worm wheel 179 and the worm 17101 are transmitted, the screw 178 rotates with the worm wheel 179 to drive the connecting plate 177 to move upward. When the connecting plate 177 moves to the highest point, it will not collide with the worm wheel 179.

[0042] As an embodiment of the present invention, refer to Figure 8 The hot gas regulating assembly 18 includes a partition 181, a universal seat 182 and a connecting strip 183. The two partitions 181 are symmetrically arranged on the inner side of the copying plate 173 of the same copying plate regulating assembly 17, and the same end of the partition 181 is rotatably connected to the top cover 171. The length of the partition 181 is less than half of the length of the copying plate 173, and the end of the partition 181 close to the gas furnace 2 is close to the corresponding side plate 9, and the other end of the partition 181 cannot extend to the screw 178 in the center of the corresponding copying plate regulating assembly 17. The universal seat 182 is installed on the side wall away from the partition 181, and the universal seat 182 is arranged away from the end of the partition 181 rotatably connected to the top cover 171, one end of the connecting strip 183 is rotatably connected to the universal seat 182, and the other end of the connecting strip 183 is rotatably connected to the adjacent side wall of the copying plate 173; on the copying plate 173 When rotating horizontally, through the cooperation of the universal seat 182 and the connecting strip 183, when the shoveling plate 173 rotates, the partition 181 rotates around a fixed point at one end connected to the top cover 171, and the other end of the partition 181 is adaptively rotated by the joint action of the shoveling plate 173, and the spacing of the end of the partition 181 that adaptively rotates changes, and the angle of the partitions 181 in the same group of hot air regulation components 18 changes adaptively, thereby changing the amount of hot air blown out from the middle part of the inner side of the close to the shoveling plate adjustment component 17, ensuring that the subsequent grain crops can be dried by hot air of the same temperature; the adjacent sides of the partition 181 are constructed with inclined surfaces 1811, and the inclined surfaces 1811 are arranged at the end of the partition 181 away from the rotational connection with the top cover 171, and the guiding effect of the inclined surfaces 1811 facilitates the hot air to quickly pass through the partitions 181 to avoid the formation of turbulence.

[0043] As an embodiment of the present invention, refer to Figure 4 One end of the partition 181 with an inclined surface 1811 extends to the outside of the corresponding screw 178, and when the partition 181 is in a parallel state, the end of the partition 181 is in contact with the side wall of the side plate 9; the end of the partition 181 extends to the outside of the screw 178 to provide protection for the part of the screw 178 with a thread groove, preventing food crops from entering between the partitions 181 and getting stuck in the thread groove, thereby maintaining the long-term stable operation of the copying plate adjustment assembly 17.

[0044] Workflow: Before putting the crops into the drying operation, the angle of the lifting plate 173 is adjusted according to the type of crops, and the drying slowness ratio is adjusted to the optimal ratio range of the corresponding crops, thereby ensuring the drying quality and drying efficiency of the crops. Moreover, when the angle of the lifting plate 173 changes, the hot air regulating component 18 adaptively adjusts the opening spacing of the partition 181 close to one end of the gas furnace 2 to a suitable size, and a proper amount of hot air passes through the partitions 181, without passing through the front crops for heat exchange to ensure the temperature value. Then, this part of the hot air is blown from the middle position close to the lifting plate regulating component 17 to the rear crops. By maintaining the temperature of the hot air blown to the rear crops, it is avoided that the temperature of the hot air is reduced after heat exchange with the front crops, and then the heat exchange with the rear crops causes the drying effect of the rear crops to be worse than that of the front crops, thereby maintaining the uniformity of the drying operation of the crops at the same height;

[0045] Specifically, before the drying operation is performed, the high temperature resistant motor 12 is started in the same direction at the same time. The output shaft of the high temperature resistant motor 12 drives the short shaft 11 to rotate through the sprocket and the chain 13. The connecting shaft 1710 in the upper two-layer copying plate adjustment assembly 17 rotates accordingly under the drive of the short shaft 11. The worm 17101 rotates with the connecting shaft 1710 to drive the worm wheel 179 to rotate, so that the corresponding screw 178 rotates, and the connecting plate 177 threadedly connected to the screw 178 changes in height accordingly, and then the limit blocks 176 at both ends of the connecting plate 177 change in height. Since the limit blocks 176 can only slide along the limit grooves 175, the symmetrical copying plates 173 are pulled to rotate until the copying plates 173 are adjusted to a suitable angle;

[0046] When the angle of the lifting plate 173 changes, one end of the partition 181 is connected to the lifting plate 173 through the universal seat 182 and the connecting bar 183. When the lifting plate 173 rotates horizontally, the connecting bar 183 rotates accordingly, and the relative position of the connecting bar 183 with the end of the partition 181 in the horizontal direction changes, thereby driving the rotation of one end of the partition 181 with the inclined surface 1811, and the angle of the partition 181 in the same group of hot air regulation components 18 changes. The amount of hot air that subsequently passes through the hot air flow hole 10 and flows along the partition 181 changes. The larger the angle between the lifting plates 173, the slower the falling speed of the grain crops, and the longer the time for the grains to exchange heat with the air through the lifting plates 173, so that the temperature difference after the grains contact the lifting plates 173 increases. The larger the angle between the partitions 181, the greater the amount of hot air blown to the rear-stage grain crops, and the drying effect of the grain crops at the same height per unit time is maintained under the condition of reducing the drying slow ratio.

[0047] After the grain crops fall, they fall along the receiving plate 15 to the lower plate 16, and then enter the circulating feeder 3 from the end of the lower plate 16. The circulating feeder 3 lifts the fallen grain crops to the horizontal feeder 8 above the top plate 6. The horizontal feeder 8 spreads the grain crops horizontally and drops them at a high position on the inner side of the outer frame 1 until the grain crops are dried to the set humidity. The power supply of the circulating feeder 3 is disconnected, and the high-temperature resistant motor 12 is started clockwise. The copying plate 173 is adjusted to a nearly vertical state, and the side baffle 174 is attached to the side wall of the side plate 9 to block the gap between the hot air flow hole 10 and the copying plate 173. Then, the dried grain crops can be discharged at the maximum falling speed.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated low-temperature circulation dryer for grains, comprising an outer frame (1), a gas furnace (2), a circulation feeder (3), a control box (4), a feed extractor (5), a top plate (6), a moisture discharge frame (7), a horizontal feeder (8), a side plate (9), hot air flow holes (10), a reflux frame (14), a receiving plate (15), and a discharge plate (16), characterized in that: The invention also comprises a short shaft (11), a high temperature resistant motor (12), a chain (13), a lifting plate adjustment component (17) and a hot air control component (18); the side plates (9) are arranged parallel to and installed between the inner walls of the outer frame (1); the top plate (6) is installed on the inner periphery of the outer frame (1), and the top plate (6) is fitted with the top of the side plates (9); the hot air circulation holes (10) are staggeredly arranged on the side walls of the side plates (9); the short shaft (11) rotates and penetrates the side plates (9); the high temperature resistant motor (12) is installed on the outer wall of the side plates (9) through a bracket; the chain (13) is installed through a sprocket A scissor-plate regulating component (17) is connected between the output shaft of the high-temperature resistant motor (12) and the short shaft (11), and the scissor-plate regulating component (17) corresponding to the hot air circulation hole (10) is installed between the side walls of the two side plates (9), and the scissor-plate regulating component (17) is fixedly connected to the short shaft (11), and the hot air regulating component (18) is installed inside the scissor-plate regulating component (17). When the high-temperature resistant motor (12) drives the short shaft (11) to rotate, the opening and closing angle of the scissor-plate regulating component (17) is changed, and when the opening and closing angle of the scissor-plate regulating component (17) changes, the distance between the two ends of the hot air regulating component (18) changes adaptively.

2. The integrated low-temperature circulation dryer for grains according to claim 1, characterized in that: The copying plate adjustment assembly (17) comprises a top cover (171), a circular hole (172), a copying plate (173), a limiting groove (175), a limiting block (176), a connecting plate (177), a screw (178), a worm gear (179), and a connecting shaft (1710); the top cover (171) is fixedly mounted between the side walls of the two side plates (9); the circular holes (172) are arranged at equal intervals on the surface of the top cover (171) below; the copying plate (173) is symmetrically mounted on the bottom of the top cover (171); the limiting groove (175) is arranged on the inner wall of the copying plate (173); the limiting block (176) is arranged on the inner wall of the copying plate (176); the connecting plate (17 ... The connecting plate (177) is rotatably mounted between the side walls of the two limiting blocks (176), the screw rod (178) is rotatably mounted between adjacent top covers (171), and the screw rod (178) is threadedly connected to the connecting plate (177), the worm gear (179) is sleeved and fixed on the outer periphery of the screw rod (178), the connecting shaft (1710) is rotatably mounted between the side walls of the two side plates (9), and the connecting shaft (1710) is transmission-connected to the worm gear (179), and the end of the connecting shaft (1710) is fixedly connected to the end of the short shaft (11).

3. The integrated low-temperature circulation dryer for grains according to claim 2, characterized in that: A worm (17101) is installed on the outer periphery of the connecting shaft (1710), and the worm (17101) is meshed with the worm wheel (179).

4. The integrated low-temperature circulation dryer for grains according to claim 2, characterized in that: The surface of the lifting plate (173) is symmetrically mounted with side baffles (174), the side walls of the side baffles (174) are slidably fitted with the side walls of the side plates (9), and the tops of the side baffles (174) extend to below the top cover (171).

5. The integrated low-temperature circulation dryer for grains according to claim 3, characterized in that: The worm wheel (179) is arranged above the corresponding connecting plate (177), and the worm wheel (179) is arranged above the limiting groove (175).

6. The integrated low-temperature circulation dryer for grains according to claim 5, characterized in that: The hot air regulating component (18) comprises a partition (181), a universal seat (182) and a connecting strip (183); two partitions (181) are symmetrically arranged on the inner side of a copying plate (173) of the same copying plate regulating component (17); and the same end of the partitions (181) is rotatably connected to the top cover (171); the universal seat (182) is installed on a side wall away from the partition (181); and the universal seat (182) is arranged away from one end of the partition (181) rotatably connected to the top cover (171); one end of the connecting strip (183) is rotatably connected to the universal seat (182); and the other end of the connecting strip (183) is rotatably connected to a side wall of the copying plate (173) that is close to the partition (181).

7. The integrated low-temperature circulation dryer for grains according to claim 6, characterized in that: Adjacent sides of the partition (181) are both constructed with inclined surfaces (1811), and the inclined surfaces (1811) are arranged at an end of the partition (181) away from the end that is rotatably connected to the top cover (171).

8. The integrated low-temperature circulation dryer for grains according to claim 7, characterized in that: One end of the partition (181) having an inclined surface (1811) extends to the outside of the corresponding screw rod (178), and when the partition (181) is in a parallel state, the end of the partition (181) is in contact with the side wall of the side plate (9).

9. The integrated low-temperature circulation dryer for grains according to claim 8, characterized in that: The ends of the screw rod (178) in the same axial direction are connected to each other, and the thread groove of the screw rod (178) is opened between the partition plates (181).

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