Drying machine for oryzanol production

Abstract

The invention provides a drying machine for oryzanol production. The drying machine comprises a rack, the rack is provided with a double-cone-shaped tank body capable of rotating around a horizontal shaft, and the tank body is sequentially provided with a drying chamber and a heating chamber from inside to outside; the drying chamber is connected with an air suction pipe, a separation barrel is arranged in the drying chamber, a powder channel is formed in the separation barrel, and a block channel is formed between the outer side wall of the separation barrel and the inner side wall of the drying chamber; the first end and the second end of the powder channel are each covered with a screen hopper, the end, back to the separation barrel, of each screen hopper is the tip end of the separation barrel, and the first end and the second end of the separation barrel are each provided with a screen barrel capable of sliding in the axial direction of the separation barrel. A grinding ring is arranged in the block material channel, a grinding gap is formed between the inner side wall of the grinding ring and the outer side wall of the separation barrel, the outer side of the grinding ring is sleeved with a water wheel, the water wheel is located in a heating chamber, the heating chamber is connected with a water inlet pipe and a water drainage pipe, and the actual water storage capacity of the heating chamber is smaller than the maximum water storage capacity of the heating chamber. The oryzanol cake crushing device has a good crushing effect on oryzanol cakes.

Description

Technical Field

[0001] This invention relates to the field of drying technology, specifically to a dryer for the production of oryzanol. Background Technology

[0002] In the production of oryzanol, the precipitated oryzanol powder needs to be dried to meet the process requirements of subsequent finished product manufacturing. To prevent oryzanol from oxidizing during drying, the industry typically uses a double cone dryer for vacuum drying. Given the inherent viscosity of oryzanol powder, when the double cone dryer rotates, the powder tumbles within the container, causing it to adhere and aggregate, easily forming clumps. The moisture inside these clumps is difficult to evaporate quickly, resulting in uneven drying and severely impacting the drying effect.

[0003] To address the clumping problem of oryzanol, existing double-cone dryers typically install rotating blades inside the tank to break up the agglomerated powder. However, the blades are ineffective at breaking up oryzanol agglomerates. Firstly, the contact between the agglomerates and the blades is random, making it impossible to ensure that each agglomerate collides fully and is effectively broken. Some agglomerates may not collide with the blades at all during the drying process, remaining intact and severely impacting subsequent product manufacturing. Secondly, the single collision of the blades has limited effect on agglomerate fragmentation. To achieve a certain degree of fragmentation, agglomerates often need to collide with the blades multiple times, thus prolonging the fragmentation process. This not only increases the overall drying time, reducing production efficiency and increasing production costs, but may also lead to over-drying of some oryzanol, damaging its chemical structure and physiological activity, thereby affecting the quality and performance of subsequent products. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a dryer for the production of oryzanol, which has a better effect on breaking up oryzanol clumps.

[0005] The present invention adopts the following technical solution.

[0006] A dryer for the production of oryzanol includes a frame, on which a double-cone shaped tank capable of rotating about a horizontal axis is provided, and the tank is provided with a drying chamber and a heating chamber from the inside to the outside.

[0007] The drying chamber is connected to an air suction pipe. The drying chamber is provided with a partition cylinder extending axially along the tank body. A powder channel is formed inside the partition cylinder, and a block material channel is formed between the outer side wall of the partition cylinder and the inner side wall of the drying chamber.

[0008] The first and second ends of the powder channel are both covered with sieve hoppers, and the end of the sieve hopper facing away from the separator cylinder is its tip. The first and second ends of the separator cylinder are both provided with sieve cylinders that can slide along their axial direction. The sieve cylinders can abut against or separate from the inner end wall of the drying chamber.

[0009] The material channel is equipped with a grinding ring that can rotate around the axis of the tank. A grinding gap is formed between the inner wall of the grinding ring and the outer wall of the separator. A water wheel is sleeved on the outer side of the grinding ring. The water wheel is located in the heating chamber. The heating chamber is connected to an inlet pipe and a drain pipe. The heating chamber is set such that its actual water storage capacity is less than its maximum water storage capacity.

[0010] Furthermore, the side wall of the tank is connected to a horizontally extending rotating shaft, the frame is provided with a support seat that is rotatably connected to the rotating shaft, a driven sprocket is integrally sleeved on the rotating shaft, the driven sprocket is connected to a driving sprocket through a transmission chain, and the driving sprocket is connected to a reduction motor.

[0011] Furthermore, the first and second ends of the tank are respectively provided with air guiding chambers, and the air guiding chambers are connected to the drying chamber through an annular filter cover;

[0012] The frame is provided with a support seat that is rotatably connected to the tank. The support seat is provided with an air inlet channel and an air intake channel. The air inlet channel is connected to an air intake pipe, and the air intake channel is connected to the air intake pipe.

[0013] When the tank is in a vertical position, the air inlet channel is connected to the lower air guide chamber, and the air intake channel is connected to the upper air guide chamber.

[0014] Furthermore, the separator cylinder includes a screen ring, the length of which covers the grinding gap.

[0015] Furthermore, both the first and second ends of the grinding ring are provided with conical guide grooves, and the sidewalls of the guide grooves are evenly distributed with multiple ridges along their circumference.

[0016] Furthermore, a support column is connected between the screen hoppers at the first and second ends of the powder channel. The support column extends along the axial direction of the tank body, and the tank body is connected to the support column as a whole through ribs.

[0017] Furthermore, a first sliding cavity extending along its axial direction is provided inside the receiving column, and a first gravity block is slidably connected inside the first sliding cavity.

[0018] Furthermore, a first magnet is provided at both the first end and the second end of the first sliding cavity. When the tilt angle of the can body is less than a predetermined value, the component force generated by the gravity of the first gravity block along the axis of the first sliding cavity is less than the maximum magnetic attraction force of the first magnet on the first gravity block.

[0019] Furthermore, the powder channel is provided with multiple grinding balls;

[0020] The receiving column has a second sliding cavity extending along its axial direction. A second gravity block is slidably connected in the second sliding cavity. An active hydraulic chamber is connected to the first end and the second end of the second sliding cavity. An elastic cover is provided in the active hydraulic chamber. A transmission rod is provided on the elastic cover. The elastic cover has a tendency to drive the transmission rod to extend into the second sliding cavity.

[0021] An elastic sleeve is fitted at the position of the receiving column corresponding to the inner side of the tip of the screen bucket. The elastic sleeve and the receiving column form a driven hydraulic chamber that communicates with the active hydraulic chamber. Both the active hydraulic chamber and the driven hydraulic chamber are filled with liquid medium.

[0022] Furthermore, a second magnet is provided at both the first and second ends of the second sliding cavity. When the tilt angle of the can body is less than a predetermined value, the component force generated by the gravity of the second gravity block along the axis of the second sliding cavity is less than the maximum magnetic attraction force of the second magnet on the second gravity block.

[0023] The beneficial effects of this invention are as follows:

[0024] During the drying process of oryzanol, the tank rotates around a horizontal axis, causing the oryzanol powder to continuously tumble within the tank. Meanwhile, hot water is contained in the heating chamber to heat the oryzanol powder inside the drying chamber; the suction pipe continuously draws in air from the tank, as well as water vapor generated by the evaporation of moisture from the oryzanol powder, thereby achieving the drying process of the oryzanol powder within the tank.

[0025] During the rotation of the tank around its horizontal axis, the oryzanol powder located at the upper part of the tank passes through the upper sieve hopper and falls into the lower part of the tank via the powder channel; however, larger clumps cannot pass through the sieve hopper and roll along its outer wall. At this point, the upper sieve cylinder separates from the inner end wall of the drying chamber under its own gravity, allowing the clumps rolling along the outer wall of the sieve hopper to enter the clump channel. Subsequently, the clumps fall onto the grinding ring.

[0026] Meanwhile, since the actual water storage capacity of the heating chamber is set to be less than its maximum capacity, the hot water inside the heating chamber will churn as the tank rotates around its horizontal axis, forming a water flow that drives the water wheel to rotate. Driven by the water flow, the water wheel drives the grinding ring to rotate, thereby grinding the clumps that fall onto the grinding ring through the grinding gaps.

[0027] If the clumps that fall onto the grinding ring are not completely ground, they will move below the grinding ring as the tank continues to rotate. At this point, the screen cylinder below, under its own gravity, abuts against the inner wall of the drying chamber, intercepting the incompletely ground clumps in the clump channel. When the clumps return to the grinding ring as the tank rotates, the grinding ring can continue grinding them. In this way, the time required for the clumps to re-enter the clump channel is eliminated, effectively improving grinding efficiency.

[0028] In summary, the present invention grinds the agglomerates using a grinding ring, which not only ensures that each agglomerate is in full contact with the grinding ring and is effectively broken, but also that each agglomerate only needs to be ground once to achieve a good degree of fragmentation, thereby significantly improving the agglomerate breaking effect. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0031] Figure 2 for Figure 1 Enlarged view of part A;

[0032] Figure 3 for Figure 1 Enlarged view of part B;

[0033] Figure 4 for Figure 1 Enlarged view of part C;

[0034] Figure 5 for Figure 1 Enlarged view of part D.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Rack;

[0037] 2. Tank body;

[0038] 21. Drying chamber; 211. Suction pipe; 212. Air inlet pipe;

[0039] 22. Heating chamber; 221. Water inlet pipe; 222. Drain pipe;

[0040] 23. Air guide chamber; 24. Filter cover;

[0041] 31. Separator cylinder; 311. Powder channel; 312. Block material channel; 313. Screen ring;

[0042] 32. Sieve bucket; 33. Sieve cylinder;

[0043] 34. Grinding ring; 341. Feed guide groove; 342. Edge;

[0044] 35. Waterwheel;

[0045] 41. Rotating shaft; 42. Support base;

[0046] 43. Receiving seat; 431. Air intake channel; 432. Inhalation channel;

[0047] 51. Driven sprocket; 52. Transmission chain; 53. Drive sprocket; 54. Gear motor;

[0048] 6. Supporting column;

[0049] 611. First sliding cavity; 612. First gravity block; 613. First magnet;

[0050] 621. Second sliding cavity; 622. Second gravity block; 623. Second magnet;

[0051] 631. Active hydraulic chamber; 632. Elastic cover; 633. Transmission rod; 634. Elastic sleeve; 635. Driven hydraulic chamber;

[0052] 7. Ribs; 8. Grinding balls. Detailed Implementation

[0053] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0054] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings. The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0055] As shown in the attached figure, a dryer for the production of oryzanol includes a frame 1, on which a double-conical tank 2 capable of rotating around a horizontal axis is provided. The tank 2 is provided with a drying chamber 21 and a heating chamber 22 from the inside to the outside.

[0056] The drying chamber 21 is connected to the suction pipe 211. The drying chamber 21 is provided with a partition cylinder 31 extending along the axial direction of the tank body 2. A powder channel 311 is formed inside the partition cylinder 31. A block material channel 312 is formed between the outer side wall of the partition cylinder 31 and the inner side wall of the drying chamber 21.

[0057] Both the first and second ends of the powder channel 311 are covered with sieve hoppers 32, with the end of the sieve hopper 32 facing away from the separator cylinder 31 being its pointed end. During the rotation of the tank 2 around its horizontal axis, the oryzanol powder located in the upper part of the tank 2 passes through the upper sieve hopper 32 and falls into the lower part of the tank 2 via the powder channel 311; however, larger clumps cannot pass through the sieve hopper 32 and roll along its outer wall. Both the first and second ends of the separator cylinder 31 are equipped with sieve cylinders 33 that can slide axially along its axis. The sieve cylinders 33 can abut against or separate from the inner end wall of the drying chamber 21. During the rotation of the tank 2 around its horizontal axis, the sieve cylinder 33 in the lower part of the tank 2 slides downward along the separator cylinder 31 under its own gravity, abutting against the lower inner end wall of the drying chamber 21; while the sieve cylinder 33 in the upper part of the tank 2 also slides downward along the separator cylinder 31 under its own gravity, separating from the upper inner end wall of the drying chamber 21.

[0058] A grinding ring 34, capable of rotating around the axis of the tank 2, is installed inside the material channel 312. A grinding gap is formed between the inner wall of the grinding ring 34 and the outer wall of the partition cylinder 31. A water wheel 35 is fitted onto the outer side of the grinding ring 34. The water wheel 35 is located inside the heating chamber 22, which is connected to an inlet pipe 221 and a drain pipe 222. The heating chamber 22 is configured such that its actual water storage capacity is less than its maximum water storage capacity. Because the actual water storage capacity of the heating chamber 22 is set to be less than its maximum water storage capacity, the hot water inside the heating chamber 22 will churn during the rotation of the tank 2 around its horizontal axis. On the one hand, the churning hot water creates a water flow that drives the water wheel 35 to rotate; on the other hand, the churning hot water also enhances thermal convection within the heating chamber and disrupts the boundary layer between the hot water and the heated surface, thereby improving the heating efficiency of the oryzanol powder in the drying chamber.

[0059] Furthermore, as the hot water churns, the water flows through the water impeller 35 in a reciprocating manner. Thus, when the water flows from the first end to the second end of the water impeller 35, the rotation direction of the water impeller 35 is opposite to that when the water flows from the second end to the first end. This opposite rotation drives the grinding ring 34 to rotate reciprocally. When the grinding ring 34 becomes stuck in the first direction of rotation, the reciprocating water flow will drive the grinding ring 34 to rotate in the second direction through the water impeller 35, thereby freeing the grinding ring 34 from the stuck state.

[0060] Specifically, in the working state of this embodiment, the tank 2 rotates around a horizontal axis, causing the oryzanol powder to continuously tumble inside the tank 2. During this period, the water inlet pipe 221 injects hot water into the heating chamber 22 to heat the oryzanol powder in the drying chamber 21; the air suction pipe 211 continuously draws air from the tank 2 and water vapor generated by the evaporation of moisture in the oryzanol powder, thereby drying the oryzanol powder inside the tank 2.

[0061] During the rotation of tank 2 around a horizontal axis, the oryzanol powder located at the upper part of tank 2 passes through the upper sieve 32 and falls into the lower part of tank 2 via powder channel 311; however, the larger clumps cannot pass through sieve 32 and roll along the outer wall of sieve 32. At this time, the upper sieve cylinder 33 separates from the inner end wall of drying chamber 21 under its own gravity, allowing the clumps rolling along sieve 32 to enter the clump channel 312. Subsequently, the clumps fall onto grinding ring 34.

[0062] Meanwhile, since the actual water storage capacity of the heating chamber 22 is set to be less than its maximum water storage capacity, the hot water in the heating chamber 22 will churn during the rotation of the tank 2 around the horizontal axis, forming a water flow that can drive the water wheel 35 to rotate. Driven by the water flow, the water wheel 35 drives the grinding ring 34 to rotate, thereby grinding the clumps that fall on the grinding ring 34 through the grinding gap.

[0063] If the clumps falling on the grinding ring 34 are not completely ground, they will move below the grinding ring 34 as the tank 2 continues to rotate. At this time, the screen cylinder 33 located below will, under its own gravity, come into close contact with the inner wall of the drying chamber 21, intercepting the incompletely ground clumps in the lump channel 312. When the clumps return to the grinding ring 34 as the tank 2 rotates, the grinding ring 34 can then continue grinding them. This design eliminates the time required for the clumps to roll back into the lump channel 312 along the screen hopper 32, effectively improving grinding efficiency.

[0064] Preferably, a horizontally extending rotating shaft 41 is connected to the side wall of the tank body 2. A support base 42 rotatably connected to the rotating shaft 41 is provided on the frame 1. A driven sprocket 51 is integrally sleeved on the rotating shaft 41. The driven sprocket 51 is connected to a driving sprocket 53 through a transmission chain 52. The driving sprocket 53 is connected to a reduction motor 54. Specifically, the reduction motor 54 drives the driving sprocket 53 to rotate, so that the driving sprocket 53 drives the driven sprocket 51 to rotate through the transmission chain 52, thereby realizing the rotation of the tank body 2 around the horizontal axis.

[0065] It should be noted that when the oryzanol powder accumulates at the bottom of the tank 2, the top layer of oryzanol powder will form an obstruction, which will hinder the upward movement of the water vapor generated by the evaporation of moisture in the bottom layer of oryzanol powder. This makes it difficult for the water vapor generated by the evaporation of the bottom layer of oryzanol powder to directly penetrate the top layer of oryzanol powder and be extracted by the suction pipe 211, which seriously affects the drying efficiency of the oryzanol powder.

[0066] To solve this problem, preferably, the first and second ends of the tank 2 are respectively provided with air guiding chambers 23, and the air guiding chambers 23 are connected to the drying chamber 21 through an annular filter cover 24. The filter cover 24 is used to prevent the oryzanol powder in the tank 2 from entering the air guiding chambers 23.

[0067] The frame 1 is provided with a support seat 43 that is rotatably connected to the tank 2. The support seat 43 is provided with an air inlet channel 431 and an air intake channel 432. The air inlet channel 431 is connected to an air inlet pipe 212, and the air intake channel 432 is connected to the air intake pipe 211.

[0068] When the tank 2 is in a vertical position, the air inlet channel 431 is connected to the lower air guide chamber 23, and the air intake channel 432 is connected to the upper air guide chamber 23. At this time, the air intake pipe 212 injects inert gas into the drying chamber 21 through the air inlet channel 431 and the lower air guide chamber 23 inside the tank 2. The injected inert gas is ejected from the filter cover 24 at the bottom of the tank 2, carrying water vapor generated by the evaporation of moisture from the bottom layer of oryzanol powder, allowing it to pass through the top layer of oryzanol powder. Subsequently, the air intake pipe 211, through the upper air guide chamber 23 and the air intake channel 432 inside the tank 2, draws away the inert gas and water vapor from the tank 2. This helps to improve the drying efficiency of the oryzanol powder.

[0069] In addition, the inert gas ejected from the filter cover 24 can backflush the filter cover 24, which helps to prevent the filter cover 24 from becoming clogged.

[0070] In this embodiment, the gas guide chamber 23 is covered on the outside of the heating chamber 22, which can both keep the heating chamber 22 warm and allow the inert gas to absorb the heat emitted by the heating chamber 22 as it flows through the gas guide chamber 23 at the bottom of the tank body 2, thereby achieving heating.

[0071] Specifically, in this embodiment, the receiving seat 43 is rotatably connected to the rotating shaft 41 on one side of the tank body 2. The first and second sides of the rotating shaft 41 are respectively provided with venting channels, and the venting channels are connected to the air guiding chamber 23 one by one.

[0072] Preferably, the separator cylinder 31 includes a sieve ring 313, the length of which covers the grinding gap. Thus, when the agglomerates are ground to a certain degree by the grinding ring 34, the resulting oryzanol powder can smoothly pass through the sieve ring 313 and enter the powder channel 311. Furthermore, powder that accidentally enters the agglomerate channel 312 while sliding along the sieve hopper 32 at the top of the tank 2 can also directly pass through the sieve ring 313 and re-enter the powder channel 311.

[0073] Preferably, both the first and second ends of the grinding ring 34 are provided with conical guide grooves 341, and the sidewalls of the guide grooves 341 are evenly distributed with multiple ridges 342 along their circumference. Specifically, during the rotation of the grinding ring 34, the ridges 342 on the sidewalls of the guide grooves 341 can break up larger clumps on the grinding ring 34, reducing their size. Subsequently, the smaller clumps will slide into the grinding gap along the sidewalls of the guide grooves 341 under their own gravity. This effectively prevents larger clumps from getting stuck in the block channel 312, thus preventing them from entering the grinding gap for grinding.

[0074] Preferably, a support column 6 is connected between the first end and the second end of the powder channel 311 and the screen hopper 32. The support column 6 extends along the axial direction of the tank body 2, and the tank body 2 is connected to the support column 6 as a whole through the rib plate 7.

[0075] Preferably, the receiving column 6 has a first sliding cavity 611 extending axially therein, and a first gravity block 612 is slidably connected within the first sliding cavity 611. Specifically, during the rotation of the tank 2 around the horizontal axis, the first gravity block 612 reciprocates within the first sliding cavity 611 and continuously impacts the receiving column 6, causing it to vibrate. The receiving column 6 then transmits the vibration to the screen hopper 32, screen cylinder 33, and screen ring 313, thereby effectively preventing blockage of these three components.

[0076] In order to maximize the kinetic energy of the first gravity block 612 impacting the receiving column 6, preferably, the first end and the second end of the first sliding cavity 611 are provided with a first magnet 613. When the tilt angle of the tank body 2 is less than a predetermined value, the component force generated by the gravity of the first gravity block 612 along the axial direction of the first sliding cavity 611 is less than the maximum magnetic attraction force of the first magnet 613 on the first gravity block 612.

[0077] Specifically, during the rotation of the can 2 around its horizontal axis, the first gravity block 612 impacts the lower end of the receiving column 6 and is attracted by the first magnet 613 located at that end. As the can 2 continues to rotate, the first gravity block 612 gradually moves from the lower part of the can 2 to the upper part, continuously accumulating gravitational potential energy. When the tilt angle of the can 2 is greater than a predetermined value, the component of the gravity of the first gravity block 612 along the axial direction of the first sliding cavity 611 is sufficient to overcome the magnetic attraction of the first magnet 613. Therefore, the first gravity block 612 slides downwards along the first sliding cavity 611. At this time, the tilt angle of the can 2 is relatively large, and the component of the gravity of the first gravity block 612 along the radial direction of the first sliding cavity 611 is relatively small, resulting in less friction between the first gravity block 612 and the first sliding cavity 611. Thus, as the first gravity block 612 slides downwards along the first sliding cavity 611, it can convert more gravitational potential energy into kinetic energy.

[0078] Preferably, the powder channel 311 is provided with multiple grinding balls 8.

[0079] The receiving column 6 has a second sliding cavity 621 extending along its axial direction. A second gravity block 622 is slidably connected in the second sliding cavity 621. An active hydraulic chamber 631 is connected to the first end and the second end of the second sliding cavity 621 respectively. An elastic cover 632 is provided in the active hydraulic chamber 631. A transmission rod 633 is provided on the elastic cover 632. The elastic cover 632 has a tendency to drive the transmission rod 633 into the second sliding cavity 621.

[0080] An elastic sleeve 634 is fitted on the inner side of the tip of the sieve bucket 32 ​​corresponding to the receiving column 6. The elastic sleeve 634 and the receiving column 6 form a driven hydraulic chamber 635 that communicates with the active hydraulic chamber 631. Both the active hydraulic chamber 631 and the driven hydraulic chamber 635 are filled with liquid medium.

[0081] In this embodiment, both the elastic cover 632 and the elastic sleeve 634 are made of elastic rubber.

[0082] Specifically, during the rotation of the tank 2 around the horizontal axis, the grinding balls 8 will move accordingly, and through impact, friction and crushing, further crush and refine the oryzanol powder in the powder channel 311.

[0083] When the axis of the tank 2 becomes vertical, some of the grinding balls 8 will gather inside the tip of the lower screen hopper 32. At this time, the second gravity block 622 will strike the lower transmission rod 633, causing the transmission rod 633 to move downward, thereby deforming the elastic cover 632 connected to it. This will force the liquid medium in the active hydraulic chamber 631 where the elastic cover 632 is located into the corresponding driven hydraulic chamber 635, causing the elastic sleeve 634 on the outside of the driven hydraulic chamber 635 to expand. During the expansion process, the elastic sleeve 634 will bounce the nearby grinding balls 8 away. These bounced grinding balls 8 will enhance the impact, friction and crushing effect, which will help to break down and refine the oryzanol powder in the powder channel 311. In addition, when these bounced grinding balls 8 strike the screen hopper 32 and the separator cylinder 31, they will cause irregular micro-vibrations in the screen hopper 32, screen cylinder 33 and screen ring 313, which will help to eliminate the blockage of the three.

[0084] In order to maximize the kinetic energy of the second gravity block 622 impacting the transmission rod 633, preferably, the first and second ends of the second sliding cavity 621 are provided with a second magnet 623. When the tilt angle of the tank 2 is less than a predetermined value, the component force generated by the gravity of the second gravity block 622 along the axial direction of the second sliding cavity 621 is less than the maximum magnetic attraction force of the second magnet 623 on the second gravity block 622.

[0085] Specifically, during the rotation of the can 2 around its horizontal axis, the second gravity block 622 impacts the lower transmission rod 633 and is attracted by the lower second magnet 623. As the can 2 continues to rotate, the second gravity block 622 gradually moves from the lower part of the can 2 to the upper part, continuously accumulating gravitational potential energy. When the tilt angle of the can 2 is greater than a predetermined value, the component of the gravity of the second gravity block 622 along the axis of the second sliding cavity 621 is sufficient to overcome the magnetic attraction of the second magnet 623. Therefore, the second gravity block 622 slides downwards along the second sliding cavity 621. At this time, the tilt angle of the can 2 is relatively large, and the component of the gravity of the second gravity block 622 along the radial direction of the second sliding cavity 621 is relatively small, resulting in less friction between the second gravity block 622 and the second sliding cavity 621. Thus, as the second gravity block 622 slides downwards along the second sliding cavity 621, it can convert more gravitational potential energy into kinetic energy.

[0086] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A dryer for the production of oryzanol, comprising a frame, wherein a double-conical tank capable of rotating about a horizontal axis is mounted on the frame, characterized in that, The tank is provided with a drying chamber and a heating chamber from the inside to the outside; The drying chamber is connected to an air suction pipe. The drying chamber is provided with a partition cylinder extending axially along the tank body. A powder channel is formed inside the partition cylinder, and a block material channel is formed between the outer side wall of the partition cylinder and the inner side wall of the drying chamber. The first and second ends of the powder channel are both covered with sieve hoppers, and the end of the sieve hopper facing away from the separator cylinder is its tip. The first and second ends of the separator cylinder are both provided with sieve cylinders that can slide along their axial direction. The sieve cylinders can abut against or separate from the inner end wall of the drying chamber. The material channel is equipped with a grinding ring that can rotate around the axis of the tank. A grinding gap is formed between the inner wall of the grinding ring and the outer wall of the separator. A water wheel is sleeved on the outer side of the grinding ring. The water wheel is located in the heating chamber. The heating chamber is connected to an inlet pipe and a drain pipe. The heating chamber is set such that its actual water storage capacity is less than its maximum water storage capacity.

2. The dryer for oryzanol production according to claim 1, characterized in that, The tank body has a horizontally extending rotating shaft connected to its side wall. The frame is provided with a support seat that is rotatably connected to the rotating shaft. A driven sprocket is integrally fitted onto the rotating shaft. The driven sprocket is connected to a driving sprocket via a transmission chain. The driving sprocket is connected to a reduction motor.

3. A dryer for oryzanol production according to claim 1, characterized in that, The first and second ends of the tank are respectively provided with air guiding chambers, and the air guiding chambers are connected to the drying chamber through an annular filter cover; The frame is provided with a support seat that is rotatably connected to the tank. The support seat is provided with an air inlet channel and an air intake channel. The air inlet channel is connected to an air intake pipe, and the air intake channel is connected to the air intake pipe. When the tank is in a vertical position, the air inlet channel is connected to the lower air guide chamber, and the air intake channel is connected to the upper air guide chamber.

4. A dryer for oryzanol production according to claim 1, characterized in that, The separator includes a screen ring whose length covers the grinding gap.

5. A dryer for oryzanol production according to claim 1, characterized in that, The grinding ring has a conical guide groove at both its first and second ends, and the sidewall of the guide groove is evenly distributed with multiple ridges along its circumference.

6. A dryer for oryzanol production according to claim 1, characterized in that, A receiving column is connected between the first end and the second end of the powder channel and the screen hopper. The receiving column extends along the axial direction of the tank body, and the tank body is connected to the receiving column as a whole by ribs.

7. A dryer for oryzanol production according to claim 6, characterized in that, The receiving column has a first sliding cavity extending along its axial direction, and a first gravity block is slidably connected in the first sliding cavity.

8. A dryer for oryzanol production according to claim 6, characterized in that, The first sliding cavity is provided with a first magnet at both the first end and the second end. When the tilt angle of the can is less than a predetermined value, the component force generated by the gravity of the first gravity block along the axis of the first sliding cavity is less than the maximum magnetic attraction force of the first magnet on the first gravity block.

9. A dryer for oryzanol production according to claim 6, characterized in that, The powder channel is equipped with multiple grinding balls; The receiving column has a second sliding cavity extending along its axial direction. A second gravity block is slidably connected in the second sliding cavity. An active hydraulic chamber is connected to the first end and the second end of the second sliding cavity. An elastic cover is provided in the active hydraulic chamber. A transmission rod is provided on the elastic cover. The elastic cover has a tendency to drive the transmission rod to extend into the second sliding cavity. An elastic sleeve is fitted at the position of the receiving column corresponding to the inner side of the tip of the screen bucket. The elastic sleeve and the receiving column form a driven hydraulic chamber that communicates with the active hydraulic chamber. Both the active hydraulic chamber and the driven hydraulic chamber are filled with liquid medium.

10. A dryer for oryzanol production according to claim 9, characterized in that, The first and second ends of the second sliding cavity are each provided with a second magnet. When the tilt angle of the can is less than a predetermined value, the component force generated by the gravity of the second gravity block along the axis of the second sliding cavity is less than the maximum magnetic attraction force of the second magnet on the second gravity block.

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