A high-wind-power, low-temperature, recyclable grain dryer

Abstract

The present invention relates to the technical field of grain drying, specifically a high-wind-force low-temperature circulated grain dryer, comprising a combustion furnace, a fan, a discharge hopper, a drying bin and an elevator, and also comprising an electric push rod, an outer cover, an inner tube, an angle box, a spoiler rod, a support assembly, a shield and an adjustment assembly, wherein the electric push rod is arranged outside the drying bin, the outer cover is fitted inside the drying bin, the inner tube is fixedly penetrated inside the outer cover, the angle box is penetrated inside the inner tube, and the side wall of the angle box is provided with an exhaust sieve hole. The present invention can adjust the lower port diameter of the exhaust sieve hole when drying grain particles of different sizes through the shield and spoiler rod, thereby improving the exhaust effect, and can realize simultaneous protection of the inner and outer sides of the angle box, while ensuring the structural strength of the angle box, increasing the diffusion effect of hot air, avoiding the occurrence of a drying dead corner, and effectively ensuring the drying efficiency of the dryer.

Description

Technical Field

[0001] The invention relates to the technical field of grain drying, in particular to a high-wind-force, low-temperature, circulatable grain dryer. Background Art

[0002] The high-wind, low-temperature, recyclable grain dryer is a grain drying equipment that uses low temperature and large air volume. When in use, it usually takes multiple cycles to dry the moisture in the grain to the target content. Before the moisture in the grain reaches the target content, when the grain is discharged from the discharge port of the drying section of the dryer, it will be re-transported to the dryer through the lifting equipment. Only after the moisture in the grain reaches the target content after multiple cycles of drying and is discharged, can the next batch of grains be dried.

[0003] The recyclable grain dryer includes a slow revival section and a drying section arranged below the slow revival section. The slow revival section in the grain dryer mainly allows the grain to have a temperature and moisture balance during the drying process, so as to improve the drying efficiency and grain quality. After the grain is revved in the slow revival section, it enters the drying section for drying. In order to evenly dry the grain in the dryer, the existing dryer has an angle box inside the drying section. The hot air enters the hot air channel of the angle box through the air inlet, and then is discharged from the bottom outlet and passes through the grain, thereby achieving even drying of the grain. However, since the hot air can only be blown out from the bottom of the air inlet angle box after entering the inside of the air inlet angle box, the drying efficiency of the grain is affected. In view of the above problems, there are good solutions in the prior art, such as the patent number: CN201926271U, which is a grain drying tower angle box. The left and right sides of the outer wall of the angle box body are provided with exhaust sieve holes. The angle box body and the exhaust sieve holes can cooperate with the blown hot air, so that the conventional air distribution can be carried out to achieve downstream drying and air supply processing, thereby improving the drying efficiency of grains. However, there are still the following defects: due to the different sizes of grain particles, and the aperture of the exhaust sieve holes on the angle box body is fixed, when the exhaust sieve holes are small, it will affect the outflow of hot air from the exhaust sieve holes, thereby affecting the drying efficiency, and when the exhaust sieve holes are large, there is a situation where grains pass through the exhaust sieve holes and enter the interior of the angle box, which also affects the drying efficiency. In addition, when the exhaust sieve holes are large, the structural strength of the angle box body will be reduced, resulting in bending and deformation during the drying operation, thereby affecting the drying efficiency of the dryer.

[0004] Therefore, in order to solve the above problems, a high-wind-power, low-temperature, recyclable grain dryer is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a high-wind-power, low-temperature, recyclable grain dryer, which solves the problem that the fixed aperture size of the exhaust sieve hole affects the exhaust effect when drying grain particles of different sizes, thereby affecting the drying efficiency of the dryer. By setting the shield and spoiler rod, the lower port diameter of the exhaust sieve hole can be adjusted when drying grain particles of different sizes, thereby improving the exhaust effect, and can achieve simultaneous protection of the inner and outer sides of the diagonal box, while ensuring the structural strength of the diagonal box, increasing the diffusion effect of the hot air, avoiding the occurrence of drying dead corners, and effectively ensuring the drying efficiency of the dryer.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A high-wind-force, low-temperature, circulating grain dryer comprises a combustion furnace, a fan, a discharge hopper, a drying bin and an elevator, and also comprises an electric push rod, an outer cover, an inner tube, an angle box, a spoiler rod, a support assembly, a shield plate and an adjustment assembly, wherein the electric push rod is arranged on the outside of the drying bin, the outer cover is fitted inside the drying bin, the inner tube is fixedly penetrated inside the outer cover, the angle box is penetrated inside the inner tube, the side wall of the angle box is provided with exhaust sieve holes, the support assembly is arranged inside the angle box, when hot air enters the angle box, the support assembly diffuses the hot air through the spoiler rod and supports the angle box from the inside of the angle box, the shield plate is fitted outside the angle box and staggered with the exhaust sieve holes, the adjustment assembly is arranged on one side of the angle box and connected to the electric push rod and the shield plate, before the drying operation, the adjustment assembly adjusts the covering range of the shield plate to the exhaust sieve holes through the electric push rod and shields the grains from the outside of the angle box.

[0008] It can be seen that during use, the high-wind-power, low-temperature, circulating grain dryer will not only dry a certain type of grain or grain of a fixed size, but will usually dry the grains that need to be dried according to actual needs. However, there are individual differences among different grains. During the drying operation, when the grain particles are smaller than the aperture of the exhaust sieve holes opened on the side wall of the angular box, the grains will pass through the exhaust sieve holes into the interior of the angular box and affect the normal progress of the drying operation. When the grain particles are larger than the aperture of the exhaust sieve holes opened on the side wall of the angular box, the grains will be stuck at the port of the exhaust sieve holes, thereby affecting the outflow of hot air from the exhaust sieve holes, which will still affect the normal progress of the drying operation, thereby affecting the drying efficiency of the dryer, so this solution is adopted. By setting the baffle, the position of the baffle can be adjusted under the action of the electric push rod and the adjustment component. The blocking area of ​​the baffle to the lower port of the exhaust sieve hole can be adjusted according to the individual size of the grains actually being dried, thereby preventing the grains from entering the interior of the angular box through the exhaust sieve hole while ensuring that the hot air flows out of the exhaust sieve hole normally, thereby effectively ensuring the drying efficiency of the dryer.

[0009] Preferably, the support assembly includes an L-shaped rod and a sleeve, the L-shaped rod is arranged inside the angular box, the sleeve is sleeved on the L-shaped rod, the spoiler rod is arranged on the sleeve and two are symmetrically arranged, the upper end of the spoiler rod is connected to the inner wall of the angular box, the spoiler rod is hollowed out, the angular box includes an air inlet box and an air outlet box, the rear end of the air inlet box is provided with baffle 1, the front end of the air outlet box is provided with baffle 2, both baffles 1 and 2 are connected to the outer wall of the inner tube, the two ends of the L-shaped rod are respectively connected to the corresponding baffle 1 and baffle 2, and the outer wall of the sleeve inside the air inlet box is provided with a spoiler groove.

[0010] It can be seen that the thickness of the corner box is relatively small, and after the exhaust screen holes are opened on the surface of the corner box, the structural strength of the corner box will be greatly reduced, resulting in the corner box being compressed and deformed during the drying process, thereby affecting the normal operation of the dryer and further affecting the drying efficiency. Therefore, this solution is adopted. The spoiler rod, sleeve and L-shaped rod can be used to support the corner box from the inside of the corner box, ensuring the exhaust effect while ensuring the structural strength of the corner box. At the same time, under the action of baffles 1 and 2, the flow of hot air inside the air inlet box and the air outlet box can be limited, preventing the hot air from directly flowing out from the inside of the air inlet box to the outside of the inner tube, thereby ensuring the drying efficiency.

[0011] Preferably, the adjustment component includes a driving plate, a mounting frame 1, a mounting frame 2, a connecting rod, a slider and a driving rod, the driving plate is arranged between the inner tube and the outer cover and connected to the output end of the electric push rod, the mounting frame 1 and the mounting frame 2 are both arranged on the driving plate, the side walls of the air inlet box and the air outlet box are both provided with strip openings, the connecting rod is passed through the inside of the strip openings, the upper end of the connecting rod is connected to the corresponding baffle, two sliders are provided and are sleeved on the two ends of the horizontal section of the L-shaped rod, the driving rod is arranged between the two sliders and sleeved on the lower end of the connecting rod, the mounting frame 1 is connected to the corresponding slider, the mounting frame 2 passes through the corresponding baffle 2 and is connected to the corresponding slider.

[0012] It can be seen that different grain particles have individual differences. In the process of drying grain particles of different individual sizes, the size of the lower port of the exhaust sieve hole can be changed by adjusting the position of the baffle (that is, when the grain particles are larger, the blocking area of ​​the baffle on the lower port of the exhaust sieve hole is reduced to avoid affecting the outflow of hot air from the exhaust sieve hole; when the grain particles are smaller, the blocking area of ​​the baffle on the exhaust sieve hole is increased to avoid the grain particles from passing through the exhaust sieve hole into the interior of the angular box), thereby effectively preventing the grain particles from entering the interior of the angular box and getting stuck in the lower port of the exhaust sieve hole, effectively ensuring the normal drying operation of the dryer, that is, effectively ensuring the drying efficiency of the dryer.

[0013] Preferably, the height of the exhaust screen hole at the inner end of the angular box is greater than the height at the outer end of the angular box, and the bottom of the upper port of the exhaust screen hole is higher than the top of the lower port.

[0014] It can be seen that the upper half of the angular box is arranged in a "∧" shape. When the axis of the exhaust screen hole is perpendicular to the inclined surface of the angular box, it is easier for grains to pass through the exhaust screen hole and enter the interior of the angular box, so this solution is adopted. Since the upper half of the angular box is arranged in a "∧" shape, the height of the exhaust screen hole at the inner end of the angular box is greater than the height at the outer end of the angular box. When the grains fall onto the surface of the angular box, they will slide along the inclined surface of the angular box. When the dryer is fully loaded for drying, due to the large amount of grains, when the grains are piled up, the position of the grains blocking the lower port of the exhaust screen hole can effectively prevent the grains from passing through the exhaust screen hole and entering the interior of the angular box during the grain drying process. At the same time, since the bottom of the upper port of the exhaust screen hole is higher than the top of the lower port, even if the grains completely cover the lower port of the exhaust screen hole, they cannot pass through the exhaust screen hole to enter the interior of the angular box, further improving the drying efficiency.

[0015] Preferably, the spoiler groove is an arc-shaped groove, and the depth and width of the spoiler groove are arranged to decrease from front to back.

[0016] By adopting the above scheme, when the hot air enters the interior of the angular box, the flow path will be changed under the action of the spoiler groove, so that the hot air inside the angular box will flow irregularly, further avoiding the occurrence of drying dead corners, thereby further improving the drying efficiency.

[0017] Preferably, when the connecting rod is located at the leftmost end of the strip-shaped opening, the exposed area of ​​the lower end of the exhaust sieve hole is 1 square millimeter.

[0018] It can be seen that different grains have different sizes. When the lower port diameter of the exhaust screen hole is larger, smaller grains will pass through the exhaust screen hole into the interior of the angular box, thereby affecting the normal drying operation. Therefore, this solution is adopted. When the shield covers the exhaust screen hole with the maximum area, the lower port size of the exhaust screen hole is only 1 square millimeter, which can effectively prevent the situation where small grains pass through the exhaust screen hole into the interior of the angular box, thereby ensuring the normal drying operation of the dryer.

[0019] Preferably, an air inlet and an air outlet are provided on the side wall of the outer cover, the air inlet is arranged at the bottom, and two partitions are symmetrically arranged between the outer cover and the inner tube.

[0020] By adopting the above scheme, the front and rear sides of the inner tube can be separated by the action of two partitions, so as to avoid the mixing of hot air before the drying operation and cold air after the drying operation, so that the hot air can completely enter the inner tube for drying operation under the action of the air inlet.

[0021] Preferably, two groups of mesh holes are provided on the surface of the shield plate, the two groups of mesh holes are matched with corresponding exhaust sieve holes respectively, and the radial cross-section of the mesh holes is less than 1 square millimeter.

[0022] By adopting the above scheme, when the baffle blocks the lower end port of the exhaust screen hole, hot air can still be blown out from the inside of the mesh hole, and because the aperture of the mesh hole is small, the hot air can be blown out from the mesh hole with a greater pressure, thereby ensuring that the hot air can effectively flow from the inside of the grain when drying smaller grains, thereby ensuring the drying efficiency.

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

[0024] 1. By setting the baffle, electric push rod and L-shaped rod, the position of the baffle outside the angular box can be adjusted under the action of the electric push rod, so as to realize the size adjustment of the lower port of the exhaust sieve hole opened on the surface of the angular box. On the one hand, it can avoid clogging the exhaust sieve hole and affecting the hot air blowing out of the exhaust sieve hole when the grain particles are large. On the other hand, it can avoid the situation that the grain particles pass through the exhaust sieve hole and enter the interior of the angular box when the grain particles are small. At the same time, the height position of the baffle can be kept fixed under the support of the L-shaped rod, so as to achieve the effect of protecting the angular box from the outside of the angular box, reduce the pressure of the grain particles on the angular box during the drying operation, effectively avoid the deformation of the angular box, and improve the drying efficiency while ensuring the hot air outlet effect.

[0025] 2. By means of the provided sleeve and spoiler rod, the angle box can be supported from the inside of the angle box, and in the process of supporting, the spoiler grooves provided on the surface of the sleeve and the hollow setting of the spoiler rod can be utilized to make the hot air flow irregularly after entering the inside of the air inlet box, thereby avoiding the occurrence of drying dead corners. While ensuring the structural strength of the angle box from the inside, the drying effect can be effectively guaranteed, thereby effectively improving the drying efficiency.

[0026] 3. By setting the upper end of the lower port of the exhaust sieve hole lower than the lower end of the upper port, it is possible to prevent grain particles from entering the interior of the angular box through the exhaust sieve hole during the drying operation, thereby preventing grain from accumulating inside the angular box, thereby ensuring the flow of hot air inside the angular box. When the baffle blocks the lower end of the exhaust sieve hole with a larger area, it means that the drying operation is being carried out on grains with smaller particles. Since the grains are smaller, the internal gaps of the grains will become smaller. At this time, the size of the upper port of the exhaust sieve hole remains unchanged, which can increase the pressure of the hot air when it is blown out of the exhaust sieve hole, ensuring that the hot air is blown out of the exhaust sieve hole smoothly, and further improving the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0028] Figure 2 It is a schematic diagram of a partial cross-sectional connection structure of the outer cover, the inner tube and the angular box of the present invention;

[0029] Figure 3 is a plan cross-sectional view of the angular box of the present invention;

[0030] Figure 4 It is a schematic diagram of a partial cross-sectional connection structure of the air intake box, the spoiler rod, the support assembly and the shield plate of the present invention;

[0031] Figure 5 It is a schematic diagram of the partial connection structure of the regulating assembly and the air inlet box, the air outlet box, the baffle plate 1 and the baffle plate 2 of the present invention;

[0032] Figure 6 For the present invention Figure 4 An enlarged view of the local A in the middle;

[0033] Figure 7 For the present invention Figure 5 Rear view of

[0034] Figure 8 For the present invention Figure 7 An enlarged view of the local B portion;

[0035] Fig. 9 It is a schematic diagram of the partial connection structure between the shield plate and the L-shaped rod of the present invention;

[0036] Fig.10 It is a schematic diagram of the cross-sectional connection structure of the outer cover and the partition plate of the present invention.

[0037] In the figure: 1. combustion furnace; 2. fan; 3. discharge hopper; 4. drying bin; 5. elevator; 6. electric push rod; 7. outer cover; 71. air inlet; 72. air outlet; 73. partition; 8. inner tube; 9. angular box; 91. exhaust screen hole; 92. air inlet box; 921. baffle 1; 93. air outlet box; 931. baffle 2; 94. strip mouth; 10. spoiler rod; 11. support assembly; 111. L-shaped rod; 112. sleeve; 1121. spoiler groove; 12. shield; 121. mesh; 13. adjustment assembly; 131. drive plate; 132. mounting frame 1; 133. mounting frame 2; 134. connecting rod; 135. slider; 136. drive rod. DETAILED DESCRIPTION

[0038] 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.

[0039] See also Figures 1 to 10 The present invention provides a high-wind-power, low-temperature, recyclable grain dryer, and the technical solution is as follows:

[0040] For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A high-wind-force, low-temperature, circulating grain dryer comprises a combustion furnace 1, a fan 2, a discharge hopper 3, a drying bin 4 and an elevator 5, and also comprises an electric push rod 6, an outer cover 7, an inner tube 8, an angle box 9, a spoiler rod 10, a support assembly 11, a baffle 12 and an adjustment assembly 13. The electric push rod 6 is arranged on the outside of the drying bin 4, the outer cover 7 is fitted inside the drying bin 4, the inner tube 8 is fixedly penetrated inside the outer cover 7, the angle box 9 is penetrated inside the inner tube 8, and an exhaust sieve hole 91 is opened on the side wall of the angle box 9. The height of the exhaust sieve hole 91 at the inner side end of the angle box 9 is greater than the height at the outer side end of the angle box 9, and the bottom of the upper port of the exhaust sieve hole 91 is higher than the top of the lower port.

[0041] Under the above-mentioned setting conditions, smaller grain particles can be prevented from entering the interior of the angular box 9 from the upper port of the exhaust sieve hole 91 after entering the exhaust sieve hole 91, thereby preventing grain particles from entering the interior of the angular box 9 through the exhaust sieve hole 91. At the same time, since the lower port of the exhaust sieve hole 91 is lower than the upper port, the grain particles can be further restricted from entering the interior of the angular box 9 through the exhaust sieve hole 91, thereby ensuring the normal flow of airflow inside the angular box 9 and further ensuring the drying efficiency.

[0042] As an embodiment of the present invention, refer to Figure 4 , Figure 5 and Figure 6The support assembly 11 is arranged inside the angular box 9. When the hot air enters the angular box 9, the support assembly 11 diffuses the hot air through the spoiler rod 10 and supports the angular box 9 from the inside of the angular box 9. The support assembly 11 includes an L-shaped rod 111 and a sleeve 112. The L-shaped rod 111 is arranged inside the angular box 9. The sleeve 112 is sleeved on the L-shaped rod 111. The spoiler rod 10 is arranged on the sleeve 112 and two spoilers are symmetrically arranged. The upper end of the spoiler rod 10 is connected to the angular box 9. The angular box 9 is connected to the inner wall of the inner tube 8, the spoiler rod 10 is hollowed out, the angular box 9 includes an air inlet box 92 and an air outlet box 93, the rear end of the air inlet box 92 is provided with a baffle 1 921, the front end of the air outlet box 93 is provided with a baffle 2 931, the baffle 1 921 and the baffle 2 931 are both connected to the outer wall of the inner tube 8, the two ends of the L-shaped rod 111 are respectively connected to the corresponding baffle 1 921 and baffle 2 931, and the outer wall of the sleeve 112 inside the air inlet box 92 is provided with a spoiler groove 1121.

[0043] Under the above-mentioned setting conditions, baffle 1 921 and baffle 2 931 can respectively limit the flow path of the airflow inside the air inlet box 92 and the air outlet box 93, and can support the L-shaped rod 111 at the same time to ensure the normal installation of the L-shaped rod 111, and then fix the sleeve 112 and the spoiler rod 10 under the support of the L-shaped rod 111, so as to achieve the effect of supporting the angle box 9 from the inside of the angle box 9, and effectively avoid the deformation of the angle box 9 due to the gravity factor of the grain during the drying process after the exhaust screen hole 91 is opened on the surface of the angle box 9, thereby ensuring the normal progress of the drying operation, and when the hot air enters the interior of the air inlet box 92, it can flow irregularly under the condition of the hollow setting of the spoiler rod 10, thereby effectively avoiding the situation of drying dead corners, and then effectively ensuring the drying efficiency.

[0044] As an embodiment of the present invention, refer to Figure 4 , Figure 5 and Figure 6 The spoiler groove 1121 is an arc-shaped groove, and the depth and width of the spoiler groove 1121 are set to decrease from front to back.

[0045] Under the above-mentioned setting conditions, when the hot air enters the interior of the air inlet box 92, it can flow inside the air inlet box 92. When the hot air enters the interior of the spoiler groove 1121, it can flow along the path of the spoiler groove 1121. After the hot air flows out from the interior of the spoiler groove 1121, it can collide with the hot air flowing inside the air inlet box 92, thereby further changing the flow path, causing the hot air inside the air inlet box 92 to flow irregularly, further avoiding the occurrence of drying dead corners, and further ensuring the drying efficiency of the dryer.

[0046] As an embodiment of the present invention, refer to Figure 4, Figure 5 , Figure 6 , Figure 7 and Figure 8 The baffle 12 is fitted on the outside of the angular box 9 and is offset from the exhaust sieve hole 91. The adjustment component 13 is arranged on one side of the angular box 9 and is connected to the electric push rod 6 and the baffle 12. Before the drying operation, the adjustment component 13 adjusts the covering range of the baffle 12 to the exhaust sieve hole 91 through the electric push rod 6 and blocks the grains from the outside of the angular box 9. The adjustment component 13 includes a driving plate 131, a mounting frame 132, a mounting frame 2 133, a connecting rod 134, a slider 135 and a driving rod 136. The driving plate 131 is arranged between the inner tube 8 and the outer cover 7 and is connected to the output end of the electric push rod 6. The mounting frame One 132 and two mounting frames 133 are both arranged on the driving plate 131, and the side walls of the air inlet box 92 and the air outlet box 93 are both provided with a strip-shaped opening 94, and the connecting rod 134 is passed through the inside of the strip-shaped opening 94, and the upper end of the connecting rod 134 is connected to the corresponding baffle 12, and two sliders 135 are provided and are sleeved on both ends of the horizontal section of the L-shaped rod 111, and the driving rod 136 is provided between the two sliders 135 and sleeved on the lower end of the connecting rod 134, and the mounting frame one 132 is connected to the corresponding slider 135, and the mounting frame two 133 passes through the corresponding baffle two 931 and is connected to the corresponding slider 135.

[0047] Under the above-mentioned setting conditions, when the drying operation is carried out on the larger grains, the electric push rod 6 is started, and the output end of the electric push rod 6 drives the driving plate 131 to move backward. Since the mounting frame 132 and the mounting frame 2 133 are both arranged on the driving plate 131, the mounting frame 132 and the mounting frame 2 133 can be driven to move during the backward movement of the driving plate 131, thereby driving the corresponding slider 135 to move. Since the slider 135 is fixedly connected to the driving plate 131 and movably sleeved with the L-shaped rod 111, the driving rod 136 can follow the slider 135 to move under the action of the mounting frame 132 or the mounting frame 2 133. At this time, the shield plate 12 outside the angular box 9 will move backward synchronously due to the sleeve action of the connecting rod 134 and the driving rod 136, thereby expanding the exposed aperture of the lower port of the exhaust screen hole 91, thereby ensuring the drying efficiency of the large grains; on the contrary, when drying the small grains, the output end of the electric push rod 6 is controlled to drive the driving plate 131 to move forward. At the same time, the baffle 12 is arranged on the outside of the corner box 9, and can support the corner box 9 from the outside of the corner box 9 under the action of the connecting rod 134 and the driving rod 136, thereby reducing the pressure on the corner box 9 during the movement of grains outside the corner box 9, thereby achieving further protection of the corner box 9 while ensuring the drying efficiency.

[0048] As an embodiment of the present invention, refer to Figure 4 , Figure 6 and Fig. 9 When the connecting rod 134 is located at the leftmost end of the strip opening 94, the exposed area of ​​the lower end of the exhaust screen hole 91 is 1 square millimeter. Two groups of mesh holes 121 are opened on the surface of the shielding plate 12. The two groups of mesh holes 121 are matched with the corresponding exhaust screen holes 91 respectively, and the radial cross-section of the mesh holes 121 is less than 1 square millimeter.

[0049] Under the above-mentioned setting conditions, the exhaust screen hole 91 is 1 square millimeter, which can maintain the strength of the angle box 9 while ensuring sufficient exhaust volume, preventing the angle box 9 from being squeezed, deformed or damaged by the surrounding grains during use. At the same time, it can effectively avoid the situation where the grain particles are small and enter the interior of the angle box 9 through the exhaust screen hole 91, thereby ensuring the normal drying operation of the dryer and further improving the drying efficiency.

[0050] As an embodiment of the present invention, refer to Figure 2 and Fig.10 The side wall of the outer cover 7 is provided with an air inlet 71 and an air outlet 72 , the air inlet 71 is arranged at the bottom, and two partitions 73 are symmetrically arranged between the outer cover 7 and the inner tube 8 .

[0051] Under the action of the two partitions 73, the front and rear sides of the inner tube 8 can be separated to avoid the mixing of hot air before the drying operation and cold air after the drying operation, so that the hot air can completely enter the inner tube 8 for drying operation under the action of the air inlet 71.

[0052] Working principle: In order to dry grains of different sizes and ensure drying efficiency, refer to Figure 2 , Figure 3 and Figure 4 By setting the shield plate 12 outside the angular box 9, the size of the lower port of the exhaust screen hole 91 can be adjusted by using the shield plate 12 to prevent grain from entering the interior of the angular box 9 through the exhaust screen hole 91; in order to ensure the structural strength of the exhaust screen hole 91 after the exhaust screen hole 91 with a larger aperture is opened on the surface of the angular box 9, refer to Figure 6 , Figure 7 and Figure 8 By using the L-shaped rod 111, the sleeve 112 and the spoiler rod 10 arranged inside the angular box 9 and the shield 12 outside the angular box 9, it is possible to simultaneously play a protective role from both inside and outside the angular box 9, effectively preventing the angular box 9 from being deformed when the dryer is performing a drying operation; in order to avoid the occurrence of a drying dead angle and affect the drying efficiency, refer to Figure 5 and Figure 6By opening the spoiler groove 1121 on the outer wall of the corresponding sleeve 112 and hollowing out the spoiler rod 10, the flow path of the hot air can be changed after entering the interior of the air inlet box 92, so that the hot air produces irregular flow, thereby avoiding the occurrence of drying dead corners.

[0053] Specifically: when it is necessary to reduce the size of the lower port of the exhaust sieve hole 91 to facilitate drying of smaller grains, refer to Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 8 , start the electric push rod 6, the output end of the electric push rod 6 drives the driving plate 131 to move forward, and in the process of the driving plate 131 moving forward, because it is connected with the mounting frame 132 and the mounting frame 2 133, it can drive the mounting frame 132 and the mounting frame 2 133 to move forward, because the mounting frame 132 and the mounting frame 2 133 are respectively connected to the corresponding slider 135, and the slider 135 is movably sleeved on the corresponding L-shaped rod 111, on the basis that the two ends of the L-shaped rod 111 are fixedly connected with the corresponding baffle 1 921 and the baffle 2 931, the slider 135 can move forward, and the slider 135 can move forward. During the process of moving forward, the block 135 can drive the driving rod 136 to move forward by utilizing the connection with the driving rod 136. At this time, since the shield plate 12 outside the angular box 9 is connected to the driving rod 136 through the connecting rod 134, the shield plate 12 can be driven to move forward during the process of the driving rod 136 moving forward, so that the shield plate 12 gradually blocks the lower port of the exhaust sieve hole 91, thereby preventing the grains from entering the interior of the angular box 9 through the exhaust sieve hole 91 or getting stuck at the lower port of the exhaust sieve hole 91, thereby ensuring the normal operation of the dryer and the drying efficiency of the dryer.

[0054] When drying larger grains, refer to Figure 1 , Figure 5 , Figure 6 and Fig. 9, start the electric push rod 6, control the output end of the electric push rod 6 to drive the driving plate 131 to move backward, and when the hot air flows into the interior of the air inlet box 92, the hot air will flow irregularly under the action of the spoiler groove 1121 opened on the surface of the sleeve 112 and the hollow setting of the spoiler rod 10, thereby avoiding the occurrence of drying dead corners and further ensuring the drying efficiency of the dryer. During the entire drying operation, the spoiler rod 10 can support the corner box 9 from the inside of the corner box 9 through the set sleeve 112 under the premise that the L-shaped rod 111 is fixedly installed, and the shield plate 12 can protect the corner box 9 from the outside of the corner box 9 under the action of the connecting rod 134, the driving rod 136 and the slider 135, thereby achieving double protection of the corner box 9, effectively avoiding the deformation of the corner box 9 during the drying operation, and further ensuring the drying efficiency of the dryer.

[0055] 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. A high-wind-power, low-temperature, recyclable grain dryer, comprising a combustion furnace (1), a fan (2), a discharge hopper (3), a drying bin (4), and an elevator (5), characterized in that: The invention also comprises an electric push rod (6), an outer cover (7), an inner tube (8), an angle box (9), a spoiler rod (10), a support assembly (11), a shield (12) and an adjustment assembly (13), wherein the electric push rod (6) is arranged outside the drying chamber (4), the outer cover (7) is arranged in a close fit inside the drying chamber (4), the inner tube (8) is fixedly inserted inside the outer cover (7), the angle box (9) is inserted inside the inner tube (8), a side wall of the angle box (9) is provided with an exhaust sieve hole (91), and the support assembly (11) is arranged inside the angle box (9) so that hot air enters the drying chamber (4). When the angular box (9) is inside, the support assembly (11) diffuses the hot air through the spoiler rod (10) and supports the angular box (9) from the inside of the angular box (9); the shield plate (12) is arranged to fit the outside of the angular box (9) and is arranged to be offset from the exhaust sieve hole (91); the adjustment assembly (13) is arranged on one side of the angular box (9) and is connected to the electric push rod (6) and the shield plate (12); before the drying operation, the adjustment assembly (13) adjusts the covering range of the shield plate (12) on the exhaust sieve hole (91) through the electric push rod (6) and shields the grains from the outside of the angular box (9).

2. A high-wind-force, low-temperature, recyclable grain dryer according to claim 1, characterized in that: The support assembly (11) comprises an L-shaped rod (111) and a sleeve (112), wherein the L-shaped rod (111) is arranged inside the angular box (9), and the sleeve (112) is sleeved on the L-shaped rod (111). The spoiler rod (10) is arranged on the sleeve (112) and two spoiler rods (10) are symmetrically arranged, and the upper ends of the spoiler rods (10) are connected to the inner wall of the angular box (9). The spoiler rods (10) are hollowed out. The angular box (9) comprises an air inlet box (92) and an outlet box (92). An air box (93), wherein a baffle plate 1 (921) is disposed at the rear end of the air inlet box (92), and a baffle plate 2 (931) is disposed at the front end of the air outlet box (93), wherein both baffle plate 1 (921) and baffle plate 2 (931) are connected to the outer wall of the inner tube (8), and both ends of the L-shaped rod (111) are respectively connected to the corresponding baffle plate 1 (921) and baffle plate 2 (931), and a spoiler groove (1121) is provided on the outer wall of the sleeve (112) inside the air inlet box (92).

3. A high-wind-force, low-temperature, recyclable grain dryer according to claim 2, characterized in that: The regulating assembly (13) comprises a driving plate (131), a first mounting frame (132), a second mounting frame (133), a connecting rod (134), a sliding block (135) and a driving rod (136); the driving plate (131) is arranged between the inner tube (8) and the outer cover (7) and is connected to the output end of the electric push rod (6); the first mounting frame (132) and the second mounting frame (133) are both arranged on the driving plate (131); the side walls of the air inlet box (92) and the air outlet box (93) are both provided with a strip-shaped opening (94); the connecting rod (134) is provided with a sliding block (135) and a driving rod (136); The connecting rod (134) is inserted into the strip opening (94), the upper end of the connecting rod (134) is connected to the corresponding baffle (12), two sliders (135) are provided and are sleeved on both ends of the horizontal section of the L-shaped rod (111), the driving rod (136) is provided between the two sliders (135) and sleeved with the lower end of the connecting rod (134), the mounting frame 1 (132) is connected to the corresponding slider (135), and the mounting frame 2 (133) passes through the corresponding baffle 2 (931) and is connected to the corresponding slider (135).

4. A high-wind-force, low-temperature, recyclable grain dryer according to claim 2, characterized in that: The height of the exhaust sieve hole (91) at the inner end of the angular box (9) is greater than the height at the outer end of the angular box (9), and the bottom of the upper port of the exhaust sieve hole (91) is higher than the top of the lower port.

5. The high-wind-force, low-temperature, recyclable grain dryer according to claim 2, characterized in that: The spoiler groove (1121) is an arc-shaped groove, and the depth and width of the spoiler groove (1121) are arranged to decrease from front to back.

6. The high-wind-force, low-temperature, recyclable grain dryer according to claim 3, characterized in that: When the connecting rod (134) is located at the leftmost end of the strip-shaped opening (94), the exposed area of ​​the lower end of the exhaust sieve hole (91) is 1 square millimeter.

7. The high-wind-force, low-temperature, recyclable grain dryer according to claim 3, characterized in that: An air inlet (71) and an air outlet (72) are provided on the side wall of the outer cover (7); the air inlet (71) is arranged at the bottom; and two partitions (73) are symmetrically arranged between the outer cover (7) and the inner tube (8).

8. The high-wind-force, low-temperature, recyclable grain dryer according to claim 5, characterized in that: Two groups of mesh holes (121) are provided on the surface of the shielding plate (12), the two groups of mesh holes (121) respectively match corresponding exhaust sieve holes (91), and the radial cross-section of the mesh holes (121) is less than 1 square millimeter.

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