Centrifugal separation device for grain dryer

Abstract

The invention discloses a centrifugal separation device for a grain drying machine, and relates to the technical field of centrifugal separation, the centrifugal separation device comprises a centrifugal gas-liquid separator, the centrifugal gas-liquid separator is provided with a ventilation pipe with an opening in the lower end and a spiral blade arranged on the periphery of the ventilation pipe, and the cleaning unit is arranged on the centrifugal gas-liquid separator and is used for removing dust cakes on the spiral blades. According to the centrifugal gas-liquid separator, the cleaning unit is arranged on the centrifugal gas-liquid separator and used for removing dust cakes on the spiral blades and avoiding the influence on the gas-liquid separation efficiency, and the automatic adjusting unit is arranged and used for controlling the moving block to stably move at a constant speed, so that it is guaranteed that dust is evenly and effectively brushed down, accumulation or excessive cleaning in some areas is avoided, and the efficiency of gas-liquid separation is improved. Meanwhile, the service life of the bristles is prolonged; and an angle self-adjusting unit is arranged, so that the motion path of the moving roller can be adaptively changed, and adaptive motion of the moving block is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal separation, and in particular to a centrifugal separation device for a grain dryer. Background Art

[0002] Grain circulation drying equipment, reference Figure 1 It includes a grain drying chamber 1 (for accommodating and storing grain), an air intake chamber 2, a flue gas circulation device 3 (which reheats the purified exhaust gas and transports it to the air intake chamber, and finally enters the grain drying chamber 1 to dry the grain), a feeding mechanism 4 and a purification box 5 (an exhaust gas discharge pipe is provided at the upper end, and a valve is provided inside). The purification box 5 is provided with a centrifugal separation mechanism for separating liquid and solid dust in the gas. When working, the grain is transported to the grain drying chamber 1 through the feeding mechanism 4, the gas is heated by the flue gas circulation device 3 and then enters the grain drying chamber through the air intake chamber 2. The gas containing moisture and dust will enter the purification box 5 for purification, and then enter the flue gas circulation device 3 to be reheated to a constant temperature for circulation.

[0003] Its centrifugal separation mechanism is generally composed of a centrifugal gas-liquid separator 8 (mainly separating fine water droplets in the gas, with an air pump 7 installed on its air inlet pipe, and the air inlet end of the air pump 7 is connected to the air outlet end of the grain drying chamber 1) and a cyclone separator 9 (mainly separating dust particles in the gas). In actual operation, as the centrifugal gas-liquid separator continues to separate the gas and liquid, the water content in the gas entering the centrifugal gas-liquid separator becomes less and less, that is, the subsequent gas becomes drier and drier. The dust on the grain will enter the centrifugal gas-liquid separator 8 with the air flow, and contact and adhere to the moist (that is, not yet dry) spiral blades. The dust accumulates more and more and forms scabs (due to subsequent hot air heating). As the dust accumulates thicker and thicker, its internal flow channel becomes narrower and narrower, affecting the gas-liquid separation efficiency. Therefore, the present application provides a centrifugal separation device for a grain dryer to meet the needs. Summary of the invention

[0004] The purpose of the present application is to provide a centrifugal separation device for a grain dryer, which is used to solve the technical problem of dust accumulation on the existing spiral blades.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a centrifugal separation device for a grain dryer, comprising a centrifugal gas-liquid separator with an air inlet pipe and a liquid discharge pipe, the centrifugal gas-liquid separator being provided with a ventilation pipe with an opening at the lower end and spiral blades arranged on the periphery of the ventilation pipe, the ventilation pipe being connected to the air outlet pipe, and also comprising a cleaning unit arranged on the centrifugal gas-liquid separator, for removing dust lumps on the spiral blades.

[0006] As a preferred implementation in this embodiment, the cleaning unit includes a shell fixedly arranged on the outer wall of the centrifugal gas-liquid separator, a bidirectional screw rotatably arranged in the inner cavity of the shell, a limit plate fixed to the upper end of the spiral blade, a feed opening opened on the end of the spiral blade, and an upper opening and a lower opening arranged up and down and opened on the outer wall of the centrifugal gas-liquid separator; The lower end of the bidirectional screw is fixedly connected to the output shaft of the driving motor fixed to the bottom of the shell, the bidirectional screw is threadedly sleeved with a ball nut, and a limiting slide bar and a bearing plate with left and right height settings at the upper end are fixed on the outer wall of the ball nut, and the right end of the limiting slide bar is slidably arranged in a rectangular slide groove provided on the inner wall of the shell, a moving block is placed on the bearing plate, and rubber rollers are respectively inclinedly arranged on both side ends of the moving block, a plurality of moving rollers are arranged at the lower end of the moving block, and the outer edge of the moving roller is set as a tip, and a plurality of groups of bristles are arranged at the bottom of the moving block; The inner cavity of the shell and the centrifugal gas-liquid separator are in communication through the upper opening and the lower opening, and the inner cavities of the upper opening and the lower opening are both provided with sealing units, and the sealing units include a sealing plate rotatably arranged thereon, and an elastic sealing layer is arranged on the outer wall of the sealing plate, and the lower end of the sealing plate abuts against an inclined surface arranged at the bottom of the inner cavity of the corresponding opening, and the inclined surface is connected with the end of the spiral blade; The lower sealing plate rotates counterclockwise to open the lower opening, and the upper sealing plate rotates clockwise to open the upper opening; The inclination direction and angle of the two rubber rollers are consistent with the spiral direction and angle of the spiral blade; A humidity sensor is also arranged near the air inlet end of the centrifugal gas-liquid separator, and the humidity sensor and the drive motor are both electrically connected to the controller.

[0007] As a preferred implementation manner in this embodiment, it also includes an automatic adjustment unit installed on the moving block, which is used to control the moving block to move at a uniform and smooth speed.

[0008] As a preferred implementation in this embodiment, the automatic adjustment unit includes an air bag and a movable column installed in the movable cavity of the same moving block, and a group of rubber rollers arranged near the ventilation pipe are provided with an annular air cavity inside; The annular air cavity is in communication with a connecting flow channel of the mounting shaft of the rubber roller, a rotating joint is provided at the upper end of the mounting shaft, and the rotating joint is connected to the airbag through a connecting pipe; The movable column is movably arranged in the movable cavity, and the outer wall of the movable column is densely covered with balls.

[0009] As a preferred implementation in this embodiment, it also includes an angle self-adjusting unit, which is provided with four groups, corresponding to the four groups of movable rollers respectively, one end is arranged on the movable block, and the other end is arranged on the movable roller, for adaptively adjusting the deflection angle of the four movable rollers.

[0010] As a preferred implementation in this embodiment, the angle adjustment unit: the angle self-adjusting unit comprises two groups of blocks with universal balls at the outer ends, two groups of arc springs and a limit ring arranged in the inner cavity of the moving block; The two blocks are respectively connected to the two ends of the rotating shaft of the corresponding moving roller, the two universal balls are in sliding contact with the inner wall of the limiting ring, the two blocks are respectively fixedly connected to the moving block through the arc spring, and the bottom of the moving block is provided with a deflection opening adapted to the moving roller.

[0011] As a preferred implementation manner in this embodiment, it also includes a vibration unit, which is arranged on the spiral blade and drives the moving block to vibrate to shake off the dust on the bristles.

[0012] As a preferred implementation in this embodiment, the vibration material unit includes two groups of protrusion units arranged near the end of the spiral blade, and each group of protrusion units is provided with multiple groups of protrusions at equal intervals.

[0013] In summary, the technical effects and advantages of the present invention are as follows: The present invention has a reasonable structure, and a cleaning unit is provided on the centrifugal gas-liquid separator to remove dust agglomerates on the spiral blades to avoid affecting the gas-liquid separation efficiency; In the present invention, an automatic adjustment unit is provided for controlling the moving block to move at a uniform and stable speed, which helps to ensure that the dust is brushed off evenly and effectively, avoids accumulation or excessive cleaning in certain areas, and helps to extend the service life of the bristles; In the present invention, an angle self-adjusting unit is provided to adaptively change the movement path of the moving roller, which is beneficial for the moving block to move spirally downward on the spiral blade and also beneficial for the moving block to move linearly on the bearing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a structural schematic diagram of an existing grain dryer; Figure 2 This is a schematic diagram of the internal structure of the purification box; Figure 3 for Figure 2 A schematic diagram of the partial cross-sectional structure of the centrifugal gas-liquid separator and the shell; Figure 4 for Figure 3 The enlarged structural diagram at A in the middle; Figure 5 for Figure 3 The schematic diagram of the structure is enlarged at B in the middle; Figure 6 It is a schematic diagram of the structure of the moving block entering the spiral blade; Figure 7 It is a schematic diagram of the local cross-section structure of the moving block; Figure 8 It is a schematic diagram of the partial top-down cross-sectional structure of the moving block; Fig. 9 Schematic diagram of the spiral blade end structure.

[0016] In the figure: 1. grain drying chamber; 2. air intake chamber; 3. flue gas circulation equipment; 4. feeding mechanism; 5. purification box; 6. exhaust pipe; 7. suction pump; 8. centrifugal gas-liquid separator; 81. spiral blade; 82. ventilation pipe; 83. feeding opening; 84. protrusion; 9. cyclone separator; 10. shell; 11. humidity sensor; 12. bidirectional screw; 13. ball nut; 14. limit slide rod; 15. drive Motor; 16. Load-bearing plate; 17. Sealing plate; 18. Lower opening; 19. Moving block; 20. Rubber roller; 21. Brush; 22. Moving roller; 23. Limiting plate; 24. Upper opening; 25. Air bag; 26. Connecting pipe; 27. Movable column; 28. Rotating joint; 29. ​​Annular air cavity; 30. Rotating shaft; 31. Block; 32. Universal ball; 33. Arc spring; 34. Limiting ring; 35. Partition. DETAILED DESCRIPTION

[0017] 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.

[0018] Example: Reference Figure 2A centrifugal separation device for a grain dryer is shown, comprising a centrifugal gas-liquid separator 8 with an air inlet pipe and a liquid discharge pipe, wherein the centrifugal gas-liquid separator 8 is provided with a vent pipe 82 with an opening at the lower end and a spiral blade 81 arranged on the periphery of the vent pipe 82, wherein the vent pipe 82 is communicated with the air outlet pipe, and further comprising a cleaning unit arranged on the centrifugal gas-liquid separator 8 for removing dust lumps on the spiral blade 81.

[0019] As a preferred implementation in this embodiment, Figure 2-7 As shown, the cleaning unit includes a shell 10 fixedly arranged on the outer wall of the centrifugal gas-liquid separator 8, a bidirectional screw 12 rotatably arranged in the inner cavity of the shell 10, a limit plate 23 fixed to the upper end of the spiral blade 81, a feed opening 83 opened at the end of the spiral blade 81, and an upper opening 24 and a lower opening 18 arranged up and down and opened on the outer wall of the centrifugal gas-liquid separator 8; The lower end of the bidirectional screw 12 is fixedly connected to the output shaft of the driving motor 15 fixed to the bottom of the housing 10, a ball nut 13 is threadedly sleeved on the bidirectional screw 12, and a limit slide bar 14 and a bearing plate 16 with left and right height settings at the upper end are fixed on the outer wall of the ball nut 13, and the right end of the limit slide bar 14 is slidably set in a rectangular slide groove provided on the inner wall of the housing 10, a moving block 19 is placed on the bearing plate 16, and rubber rollers 20 are respectively inclinedly set at the two side ends of the moving block 19, a plurality of moving rollers 22 are set at the lower end of the moving block 19, and the outer edge of the moving roller 22 is set as a tip, and a plurality of groups of bristles 21 are set at the bottom of the moving block 19; The inner cavity of the housing 10 and the centrifugal gas-liquid separator 8 is communicated through the upper opening 24 and the lower opening 18. The inner cavities of the upper opening 24 and the lower opening 18 are both provided with sealing units, and the sealing units include a sealing plate 17 rotatably arranged, and an elastic sealing layer is arranged on the outer wall of the sealing plate 17. The lower end of the sealing plate 17 abuts against the inclined surface arranged at the bottom of the inner cavity of the corresponding opening, and the inclined surface is connected with the end of the spiral blade 81; The lower sealing plate 17 rotates counterclockwise, and the lower opening 18 is opened; the upper sealing plate 17 rotates clockwise, and the upper opening 24 is opened; The inclination direction and angle of the two rubber rollers 20 are consistent with the spiral direction and angle of the spiral blade 81; A humidity sensor 11 is also arranged near the air inlet end of the centrifugal gas-liquid separator 8 , and the humidity sensor 11 and the drive motor 15 are both electrically connected to the controller.

[0020] When the humidity sensor 11 detects that the humidity entering the centrifugal gas-liquid separator 8 is very low or almost zero (dust is agglomerated on the upper end of the spiral blade 81 at this time), the controller controls the drive motor 15 to work, driving the bidirectional screw 12 to rotate. When the moving block 19 moves to the upper opening 24 position, the moving block 19 moves along the inclined surface set at the upper end of the carrier plate 16 by its own gravity and opens the sealing plate 17 located above by the component force of gravity. Finally, the moving block 19 enters the spiral blade 81 of the centrifugal gas-liquid separator 8 and moves downward along the spiral blade 81. During the movement, The two rubber rollers 20 arranged obliquely slide against the inner wall of the tank of the centrifugal gas-liquid separator 8 and the outer wall of the ventilation pipe 82 respectively, and when moving, the bristles 21 brush the dust blocks to produce dust or fine dust blocks, and the dust will move with the airflow entering the centrifugal gas-liquid separator 8, and will eventually be driven by the airflow to the cyclone separator 9 for solid-gas separation, while the fine dust blocks will be directly discharged by the drainage pipe arranged under the centrifugal gas-liquid separator 8, and the moving block 19 moving downward will eventually collide with the sealing plate 17 arranged in the lower opening 18 and eventually enter the carrier plate 16 restored to its original position; Sealing plates 17 are provided in both the upper opening 24 and the lower opening 18, which can prevent the liquid from entering the inner cavity of the shell 10 through the lower opening 18 when the centrifugal gas-liquid separator 8 performs gas-liquid separation. At the same time, the upper sealing plate 17 is provided to prevent the gas from entering the shell 10 from the upper opening 24. When the centrifugal gas-liquid separator 8 is used to separate gas and liquid, the generated liquid can move downward through the discharge opening 83 and be discharged to the outside.

[0021] It should be noted that: first, the outer surfaces on both sides of the moving block 19 are arc-shaped, which are adapted to the inner wall of the tank of the centrifugal gas-liquid separator 8 and the outer wall of the ventilation pipe 82, and have a limiting effect on the moving block 19, which is conducive to the stable downward movement of the moving block 19 along the spiral path of the spiral blade 81; second, because the outer edge of the moving roller 22 (which can be set in multiple groups according to actual needs) is set as a tip, it is easy to generate local high pressure when in contact, which helps to break or loosen dust clumps, and then helps the bristles 21 to thoroughly clean the dust blocks on the spiral blade 12 at one time; third, the moving block 19 can also enter the centrifugal gas-liquid separator 8 for treatment multiple times as needed, so as to further improve the treatment effect; fourth, the outer surface of the bristles 21 is set as a rough surface, which is more conducive to Brushing the dust blocks into powder is further conducive to achieving a one-time thorough cleaning of the dust blocks; Fifth, a partition 35 is provided in the purification box 5, and the other side of the partition is an air outlet cavity, which is connected to the air outlet end of the grain drying chamber 1, and the air inlet end of the centrifugal gas-liquid separator 8 is located in the air outlet cavity; Sixth, an elastic buffer block is provided on the bearing plate 16, which can contact and collide with the moving block 19 for buffering; Seventh, when the moving block 19 cleans the dust blocks, it relies on gravity to drive the moving block 19 to move for cleaning, and there is no consumption of electric energy. Part of the electric energy needs to be consumed when lifting the moving block 19. The overall electric energy consumption is small and relatively energy-saving; Eighth, bristles can also be provided on the two side walls of the moving block 19 to process the dust on the inner wall of the centrifugal gas-liquid separator 8 and the outer wall of the ventilation pipe 82.

[0022] As a preferred implementation manner in this embodiment, it also includes an automatic adjustment unit installed on the moving block 19, which is used to control the moving block 19 to move at a uniform and smooth speed.

[0023] As the moving block 19 moves downward along the spiral direction on the spiral blade 81, its movement speed will become faster and faster, so an automatic adjustment unit is provided to control the moving block 19 to move at a uniform and smooth speed. The uniform movement means that the contact time and pressure distribution between the bristles 21 and the spiral blades 12 are more uniform, which helps to ensure that the dust is brushed off evenly and effectively, avoiding accumulation or excessive cleaning in certain areas. The uniform movement reduces the relative speed and impact force between the bristles 21 and the spiral blades 12, thereby reducing the wear rate of the bristles, helping to extend the service life of the bristles 21 and reduce replacement and maintenance costs.

[0024] As a preferred implementation in this embodiment, Figure 7 As shown, the automatic adjustment unit includes an air bag 25 and a movable column 27 installed in the movable cavity of the same moving block 19, and a group of rubber rollers 20 arranged near the vent pipe 82 are provided with an annular air cavity 29 inside; The annular air cavity 29 is in communication with the connection flow channel of the mounting shaft of the rubber roller 20. A rotary joint 28 is provided at the upper end of the mounting shaft, and the rotary joint 28 is connected to the airbag 25 via a connecting pipe 26. The movable column 27 is movably disposed in the movable cavity, and the outer wall of the movable column 27 is densely covered with balls.

[0025] When the movement speed of the moving block 19 increases, the extrusion pressure on the rubber roller 20 in contact with the inner wall of the tank 8 of the centrifugal gas-liquid separator (due to the centrifugal force) becomes larger, and the extrusion pressure on the rubber roller 20 in close contact with the vent pipe 82 becomes smaller. When the movement speed of the moving block 19 increases, through the action of centrifugal force, the active column 27 moves close to the airbag 25 and finally squeezes the airbag 25 to make the airbag 25 expand and maintain the extrusion pressure on the rubber roller 20 in close contact with the vent pipe 82 becomes larger, thereby preventing the moving block 19 from moving downward too quickly. After the moving block 19 returns to its original position, the active column 27 returns to its original position through the elastic force of the airbag 25, which is conducive to maintaining the uniform and stable movement of the moving block 19.

[0026] As a preferred implementation in this embodiment, it also includes an angle self-adjusting unit, which is provided with four groups, corresponding to the four groups of movable rollers 22 respectively, one end is arranged on the movable block 19, and the other end is arranged on the movable roller 22, for adaptively adjusting the deflection angle of the four movable rollers 22.

[0027] The angle self-adjusting unit is provided to adaptively change the movement path of the moving roller 22 , which is beneficial for the moving block 19 to move spirally downward on the spiral blade 81 , and is also beneficial for the moving block 19 to move linearly on the carrying plate 16 .

[0028] As a preferred implementation in this embodiment, Figure 8 As shown, the angle self-adjusting unit includes two groups of blocks 31 with universal balls 32 at the outer ends, two groups of arc springs 33 and a limit ring 34 arranged in the inner cavity of the moving block 19; The two blocks 31 are respectively connected to the two ends of the rotating shaft 30 corresponding to the moving roller 22, the two universal balls 32 are in sliding contact with the inner wall of the limiting ring 34, the two blocks 31 are respectively fixedly connected to the moving block 19 through the arc spring 33, and the bottom of the moving block 19 is provided with a deflection opening adapted to the moving roller 22.

[0029] When the moving block 19 moves on the spiral blade 81, its moving roller 22 can adjust the movement angle of the moving roller 22 by rotating and compressing the arc spring 33, so that it can adapt to the downward movement path of the spiral, and avoid the moving block 19 being subjected to excessive resistance due to its unadjustable angle, resulting in slow movement, which is not conducive to the rapid processing of the dust block of the moving block 19. When the moving block 19 moves to the supporting plate 6, it automatically returns to its original position through the elastic force of the arc spring 33, adapting to the linear movement on the supporting plate 16, which is conducive to the moving block 19 entering the centrifugal gas-liquid separator 8 through the upper opening 24.

[0030] It should be noted that when the moving block 19 moves at the upper end of the spiral blade 81, its moving roller 22 will be deflected at an angle, and the deflection of the angle will cause the part of the moving roller 22 that cuts into the dust block to have a lateral extrusion force on the dust block, which is conducive to loosening or crushing the dust block, and thus facilitates subsequent cleaning.

[0031] As a preferred implementation manner in this embodiment, it also includes a vibration unit, which is arranged on the spiral blade 81 and drives the moving block 19 to vibrate to shake off the dust on the bristles 21.

[0032] As a preferred implementation in this embodiment, Fig. 9 As shown, the vibration material unit includes two groups of protrusion units arranged near the end of the spiral blade 81, and each group of protrusion units is evenly spaced and provided with multiple groups of protrusions 84.

[0033] When the moving block 19 moves to the end of the spiral blade 81 and passes through the vibrating unit, it will vibrate, and the vibration will cause the dust on the bristles 21 to fall off and enter the ventilation pipe 82 through the discharge opening 83, and finally enter the cyclone separator 9 for centrifugal separation.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A centrifugal separation device for a grain dryer, comprising a centrifugal gas-liquid separator (8) with an air inlet pipe and a liquid discharge pipe, the centrifugal gas-liquid separator (8) being provided with a vent pipe (82) with an opening at the lower end and a spiral blade (81) arranged on the periphery of the vent pipe (82), the vent pipe (82) being communicated with an air outlet pipe, characterized in that: It also includes a cleaning unit arranged on the centrifugal gas-liquid separator (8) and used for removing dust agglomerates on the spiral blades (81).

2. A centrifugal separation device for a grain dryer according to claim 1, characterized in that: The cleaning unit comprises a shell (10) fixedly arranged on the outer wall of the centrifugal gas-liquid separator (8), a bidirectional screw (12) rotatably arranged in the inner cavity of the shell (10), a limit plate (23) fixed to the upper end of the spiral blade (81), a feed opening (83) opened at the end of the spiral blade (81), and an upper opening (24) and a lower opening (18) arranged up and down and opened on the outer wall of the centrifugal gas-liquid separator (8); The lower end of the bidirectional screw (12) is fixedly connected to the output shaft of the driving motor (15) fixed to the bottom of the housing (10); a ball nut (13) is provided on the threaded sleeve of the bidirectional screw (12); a limit slide bar (14) and a bearing plate (16) with left and right height settings at the upper end are fixed on the outer wall of the ball nut (13); the right end of the limit slide bar (14) is slidably set in a rectangular slide groove provided on the inner wall of the housing (10); a moving block (19) is placed on the bearing plate (16); and rubber rollers (20) are respectively inclinedly provided on both side ends of the moving block (19); a plurality of moving rollers (22) are provided at the lower end of the moving block (19); and the outer edges of the moving rollers (22) are set as pointed ends; and a plurality of groups of bristles (21) are provided at the bottom of the moving block (19); The inner cavities of the housing (10) and the centrifugal gas-liquid separator (8) are in communication with each other through the upper opening (24) and the lower opening (18); the inner cavities of the upper opening (24) and the lower opening (18) are both provided with sealing units; the sealing units include a sealing plate (17) rotatably arranged thereon; and an elastic sealing layer is arranged on the outer wall of the sealing plate (17); the lower end of the sealing plate (17) abuts against an inclined surface arranged at the bottom of the inner cavity of the corresponding opening, and the inclined surface is connected to the end of the spiral blade (81); The lower sealing plate (17) rotates counterclockwise, and the lower opening (18) is opened; the upper sealing plate (17) rotates clockwise, and the upper opening (24) is opened; The inclination direction and angle of the two rubber rollers (20) are consistent with the spiral direction and angle of the spiral blade (81); A humidity sensor (11) is also arranged near the air inlet end of the centrifugal gas-liquid separator (8), and the humidity sensor (11) and the drive motor (15) are both electrically connected to the controller.

3. A centrifugal separation device for a grain dryer according to claim 2, characterized in that: It also comprises an automatic adjustment unit, which is installed on the moving block (19) and is used to control the moving block (19) to move at a uniform and stable speed.

4. A centrifugal separation device for a grain dryer according to claim 3, characterized in that: The automatic adjustment unit comprises an air bag (25) and a movable column (27) installed in the movable cavity of the same movable block (19), and a group of rubber rollers (20) arranged near the ventilation pipe (82) are provided with an annular air cavity (29) inside. The annular air cavity (29) is in communication with a connecting flow channel of the mounting shaft of the rubber roller (20); a rotary joint (28) is provided at the upper end of the mounting shaft, and the rotary joint (28) is connected to the airbag (25) via a connecting pipe (26); The movable column (27) is movably arranged in the movable cavity, and the outer wall of the movable column (27) is densely covered with balls.

5. A centrifugal separation device for a grain dryer according to claim 2, characterized in that: It also includes an angle self-adjusting unit, which is provided with four groups, respectively corresponding to the four groups of movable rollers (22), one end of which is provided on the movable block (19) and the other end of which is provided on the movable roller (22), and is used for adaptively adjusting the deflection angles of the four movable rollers (22).

6. A centrifugal separation device for a grain dryer according to claim 5, characterized in that: The angle adjustment unit: The angle self-adjusting unit comprises two groups of blocks (31) with universal balls (32) arranged at the outer ends, two groups of arc springs (33), and a limit ring (34) arranged in the inner cavity of the moving block (19); The two blocks (31) are respectively connected to the two ends of the rotating shaft (30) corresponding to the moving roller (22), the two universal balls (32) are in sliding contact with the inner wall of the limiting ring (34), the two blocks (31) are respectively fixedly connected to the moving block (19) through the arc spring (33), and the bottom of the moving block (19) is provided with a deflection opening adapted to the moving roller (22).

7. A centrifugal separation device for a grain dryer according to claim 2, characterized in that: It also comprises a vibration unit, which is arranged on the spiral blade (81) and drives the moving block (19) to vibrate, thereby shaking off the dust on the bristles (21).

8. A centrifugal separation device for a grain dryer according to claim 7, characterized in that: The vibrating material unit comprises two groups of protrusion units arranged near the end of the spiral blade (81), and each group of protrusion units is provided with multiple groups of protrusions (84) at equal intervals.

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