Heat pump grain dryer based on water-free automatic dust removal function

Abstract

The invention discloses a heat pump grain dryer based on a water-free automatic dust removal function, and relates to the technical field of drying of various agricultural objects. The heat pump main machine comprises a heat pump main machine shell, a built-in fixing plate is fixedly arranged on the inner wall of the heat pump main machine shell, a wind direction adjusting assembly is arranged at the top end of the built-in fixing plate, and an automatic adjusting and cleaning assembly and a driving assembly are arranged at the bottom of the heat pump main machine shell. A vibration cleaning assembly is arranged on the side, close to the wind direction adjusting assembly, of the inner wall of the heat pump host shell. By arranging the automatic adjusting and cleaning assembly, the automatic adjusting and cleaning assembly drives the fan blades to rotate reversely, meanwhile, the driving shaft drives the driven shaft to rotate, the driven shaft drives the vibration cleaning assembly to operate, grain dust attached to the outer side of the filter screen is loosened through vibration, and the grain dust falls off from the filter screen in cooperation with reverse wind; through the operation, the effect of automatically cleaning grain dust on the outer side of the filter screen is achieved, and the maintenance and replacement cleaning cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of drying various agricultural materials, and in particular to a heat pump grain dryer based on a waterless automatic dust removal function. Background Art

[0002] The heat pump grain automatic dust removal dryer, also known as the heat pump grain dryer, is an integrated dryer. The air outlet of the equipment is connected to the lower air inlet of the grain drying tower by an air duct to form a certain complete grain drying system. During the drying process, the dust carried by the grains will be adsorbed on the outside of the filter with the wind direction to cause the filter to be blocked. When the filter is blocked by dust, the equipment needs to consume more energy to maintain the same working efficiency, resulting in increased energy consumption and increased operating costs. Secondly, the blocked filter needs to be manually removed for dust removal. The dust removal steps are cumbersome, and a single cleaning method may result in incomplete cleaning. In response to the above problems, the inventor proposes a heat pump grain dryer based on waterless automatic dust removal function to solve the above problems. Summary of the invention

[0003] In order to solve the problem of automatic cleaning of the dryer filter and the coordination of multiple cleaning methods to improve the cleaning efficiency; the purpose of the present invention is to provide a heat pump grain dryer based on waterless automatic dust removal function.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a heat pump grain dryer based on waterless automatic dust removal function, comprising a heat pump main body shell, a built-in fixing plate is fixedly provided on the inner wall of the heat pump main body shell, a wind direction adjustment component is provided on the top of the built-in fixing plate, and an automatic adjustment cleaning component and a driving component are respectively provided on the bottom of the heat pump main body shell, and a vibration cleaning component is provided on the inner wall of the heat pump main body shell close to the wind direction adjustment component.

[0005] Preferably, the wind direction adjustment component includes two symmetrically distributed top plates, and the two top plates are respectively fixedly mounted on the top of the built-in fixed plate. A rotating shaft is rotatably provided on the top plate, and two symmetrically distributed No. 1 bevel gears are fixedly sleeved on the outer wall of the rotating shaft. Fan blades are fixedly provided at one end of the rotating shaft close to the vibration cleaning component. A sliding frame is slidably provided between the two top plates, and a transmission shaft is rotatably provided on the sliding frame. A No. 2 bevel gear is fixedly provided on the top of the transmission shaft, and the No. 2 bevel gear is meshingly connected with the No. 1 bevel gear.

[0006] Preferably, the driving assembly includes three symmetrically distributed driving fixing plates, which are all fixedly mounted on the heat pump main body housing. A driving shaft is rotatably provided on the driving fixing plate, and a friction disk is fixedly provided on one end of the driving shaft close to the vibration cleaning assembly.

[0007] Preferably, the automatic adjustment and cleaning component includes a sliding adjustment frame, which is slidably installed on the heat pump main unit housing, and two symmetrically distributed fixed blocks are fixedly provided on the bottom of the heat pump main unit housing close to the sliding adjustment frame. A flip rod is rotatably provided on the outer side of the fixed block, and adjustment columns are fixedly provided on the opposite sides of the top of the two flip rods, and guide columns are fixedly provided on the outer sides of the bottoms of the two flip rods. Two symmetrically distributed guide plates are fixedly provided on the top of the sliding adjustment frame, and guide grooves used in conjunction with the guide columns are opened on the guide plates, and the guide columns slide in the guide grooves.

[0008] Preferably, the vibration cleaning assembly includes a fixed frame, which is fixedly installed on the inner wall of the heat pump main body shell close to the fan blades. A stainless steel frame is slidably provided on the fixed frame, and a filter is provided on the outside of the stainless steel frame. Both ends of the stainless steel frame are fixed with symmetrically distributed fixed columns, and four fixed columns are inserted through the fixed frame. A buffer spring is sleeved on the outer wall of the fixed column, and both ends of the buffer spring are fixedly connected to the fixed frame and the stainless steel frame respectively.

[0009] Preferably, two symmetrically distributed transmission fixing plates are fixedly provided at the bottom of the heat pump main body shell, a driven shaft is rotatably provided on the transmission fixing plate, a triangular cam is provided on the fixed sleeve of the outer wall of the driven shaft close to the stainless steel frame, a guide rod is fixedly provided at the middle part of the bottom end of the stainless steel frame, and the guide rod is slidably connected with the triangular cam, a sliding sleeve on the side of the driven shaft away from the triangular cam is provided with a sliding adjustment ring used in conjunction with an adjusting column, a friction wheel used in conjunction with a friction disk is fixedly provided on the end of the sliding adjustment ring away from the triangular cam, a reset spring is provided on the outer wall of the driven shaft, and both ends of the reset spring are respectively fixedly connected to the sliding adjustment ring and the transmission fixing plate.

[0010] Preferably, the sliding adjustment frame is fixedly connected to the sliding frame, a sliding sleeve is provided with a No. 4 bevel gear on the outer wall of the driving shaft, and the No. 4 bevel gear is rotatably connected to the sliding adjustment frame, and a No. 3 bevel gear is fixedly provided at the bottom end of the transmission shaft, and the No. 3 bevel gear is meshingly connected with the No. 4 bevel gear.

[0011] Preferably, a motor is fixedly provided on the top end of the built-in fixing plate away from the fan blades, and the motor driving end is connected to the driving shaft via a pulley transmission group.

[0012] Preferably, an electric cylinder is fixedly provided on the outer side of the driving fixed plate in the middle, and the driving end of the electric cylinder passes through the driving fixed plate and is fixedly connected to the sliding adjustment frame.

[0013] Preferably, two symmetrically distributed slide rails are fixedly provided between the two top plates, and the slide frame is slidably connected to the slide rails, and two symmetrically distributed guide rails are fixedly provided at the bottom of the heat pump main body shell, and the slide adjustment frame is slidably connected to the guide rails.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention is provided with an automatic adjustment cleaning component. When the automatic adjustment cleaning component drives the fan blades to rotate in the opposite direction, the driving shaft drives the driven shaft to rotate, and the driven shaft drives the vibration cleaning component to operate. The grain dust attached to the outside of the filter is loosened by vibration and the grain dust is dropped from the filter with the help of reverse wind. The above operation achieves the effect of automatic cleaning of the grain dust on the outside of the filter, avoids filter blockage, reduces maintenance and replacement cleaning costs, and improves work efficiency.

[0016] 2. The present invention sets a vibration component, so that the driven shaft rotates to drive the triangular cam to rotate, and the triangular cam drives the stainless steel frame to vibrate on the fixed frame through the fixed column and the buffer spring. The grain dust attached to the outside of the filter is loosened and falls off through the vibration of the stainless steel frame, thereby realizing preliminary pretreatment of the outside of the filter;

[0017] 3. The present invention sets an automatic adjustment and cleaning component. During the sliding process of the sliding adjustment frame, the guide column is driven by the guide plate to move in the direction of the guide groove. The movement of the guide column drives the flip rod to flip with the rotation connection of the fixed block as the axis. The flip rod drives the friction wheel to move toward the side of the friction disk through the adjustment column and the sliding adjustment ring and contact and fit tightly, so that the driving shaft rotates and the driven shaft is driven to rotate through the friction between the friction disk and the friction wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the front section structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the transmission structure of the drive assembly in the present invention;

[0022] Figure 4 It is a structural schematic diagram of the vibration cleaning component in the present invention;

[0023] Figure 5 It is a structural schematic diagram of the automatic adjustment cleaning component in the present invention;

[0024] Figure 6It is an exploded schematic diagram of the friction wheel and the sliding adjustment ring structure in the present invention;

[0025] Figure 7 for Figure 3 A schematic diagram of the structure enlargement at the center A;

[0026] Figure 8 for Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0027] In the figure: 1. heat pump mainframe housing; 2. built-in fixing plate; 3. wind direction adjustment component; 301. top plate; 302. rotating shaft; 303. fan blade; 304. No. 1 bevel gear; 305. sliding frame; 306. transmission shaft; 307. No. 2 bevel gear; 308. No. 3 bevel gear; 309. slide rail; 4. automatic adjustment and cleaning component; 401. sliding adjustment frame; 402. electric cylinder; 403. fixing block; 404. flip rod; 405. adjustment column; 406. guide column; 407. guide plate; 40 8. Guide groove; 409. Transmission fixing plate; 410. Driven shaft; 411. Sliding adjustment ring; 412. Friction wheel; 413. Reset spring; 414. Guide rail; 5. Vibration cleaning assembly; 501. Fixed frame; 502. Stainless steel skeleton; 503. Fixed column; 504. Buffer spring; 505. Guide rod; 506. Triangular cam; 507. Filter; 6. Drive assembly; 601. Drive fixing plate; 602. Drive shaft; 603. Motor; 604. No. 4 bevel gear; 605. Friction disc. DETAILED DESCRIPTION

[0028] 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.

[0029] Example: Figure 1-8 As shown, the present invention provides a technical solution: a heat pump grain dryer based on waterless automatic dust removal function, comprising a heat pump main body shell 1, a built-in fixing plate 2 is fixedly provided on the inner wall of the heat pump main body shell 1, a wind direction adjustment component 3 is provided on the top of the built-in fixing plate 2, an automatic adjustment cleaning component 4 and a driving component 6 are respectively provided on the bottom of the heat pump main body shell 1, and a vibration cleaning component 5 is provided on the inner wall of the heat pump main body shell 1 close to the wind direction adjustment component 3.

[0030] The wind direction adjustment component 3 includes two symmetrically distributed top plates 301, and the two top plates 301 are respectively fixedly installed on the top of the built-in fixed plate 2. A rotating shaft 302 is rotatably provided on the top plate 301, and two symmetrically distributed No. 1 bevel gears 304 are fixedly sleeved on the outer wall of the rotating shaft 302. A fan blade 303 is fixedly provided at one end of the rotating shaft 302 close to the vibration cleaning component 5. A sliding frame 305 is slidably provided between the two top plates 301, and a transmission shaft 306 is rotatably provided on the sliding frame 305. A No. 2 bevel gear 307 is fixedly provided on the top of the transmission shaft 306, and the No. 2 bevel gear 307 is meshingly connected with the No. 1 bevel gear 304.

[0031] By adopting the above technical solution, the position of the transmission shaft 306 is adjusted to drive the rotating shaft 302 to rotate forward and reverse.

[0032] The driving assembly 6 includes three symmetrically distributed driving fixing plates 601, which are all fixedly mounted on the heat pump main body housing 1. A driving shaft 602 is rotatably provided on the driving fixing plate 601, and a friction disk 605 is fixedly provided at one end of the driving shaft 602 close to the vibration cleaning assembly 5.

[0033] By adopting the above technical solution, the driving shaft 602 is rotatably mounted on the driving fixing plate 601 .

[0034] The automatic adjustment and cleaning component 4 includes a sliding adjustment frame 401, which is slidably installed on the heat pump main body shell 1. Two symmetrically distributed fixed blocks 403 are fixedly provided on the bottom of the heat pump main body shell 1 close to the sliding adjustment frame 401. A flip rod 404 is rotatably provided on the outer side of the fixed block 403. Adjustment columns 405 are fixedly provided on the opposite sides of the tops of the two flip rods 404. Guide columns 406 are fixedly provided on the outer sides of the bottoms of the two flip rods 404. Two symmetrically distributed guide plates 407 are fixedly provided on the top of the sliding adjustment frame 401. Guide grooves 408 used in conjunction with the guide columns 406 are opened on the guide plates 407, and the guide columns 406 slide in the guide grooves 408.

[0035] By adopting the above technical solution, the sliding adjustment frame 401 moves to push the flip rod 404 to flip.

[0036] The vibration cleaning component 5 includes a fixed frame 501, which is fixedly installed on the inner wall of the heat pump main body shell 1 near the fan blade 303. A stainless steel skeleton 502 is slidably provided on the fixed frame 501, and a filter screen 507 is provided on the outer side of the stainless steel skeleton 502. Both ends of the stainless steel skeleton 502 are fixed with symmetrically distributed fixed columns 503, and four fixed columns 503 are inserted through the fixed frame 501. A buffer spring 504 is sleeved on the outer wall of the fixed column 503, and the two ends of the buffer spring 504 are respectively fixedly connected to the fixed frame 501 and the stainless steel skeleton 502.

[0037] By adopting the above technical solution, the stainless steel skeleton 502 is made to slide on the fixed frame 501 .

[0038] Two symmetrically distributed transmission fixing plates 409 are fixedly provided at the bottom of the heat pump host housing 1, and a driven shaft 410 is rotatably provided on the transmission fixing plate 409. A triangular cam 506 is fixedly provided on the outer wall of the driven shaft 410 close to the stainless steel frame 502. A guide rod 505 is fixedly provided in the middle of the bottom end of the stainless steel frame 502, and the guide rod 505 is slidably connected with the triangular cam 506. A sliding adjustment ring 411 used in conjunction with the adjustment column 405 is slidably provided on the side of the driven shaft 410 away from the triangular cam 506. A friction wheel 412 used in conjunction with the friction disk 605 is fixedly provided on the end of the sliding adjustment ring 411 away from the triangular cam 506. By arranging the friction disk 605 and the friction wheel 412, when the friction disk 605 and the friction wheel 412 are tightly fitted, the driving shaft 602 drives the driven shaft 410 to rotate. A reset spring 413 is sleeved on the outer wall of the driven shaft 410, and the two ends of the reset spring 413 are respectively fixedly connected to the sliding adjustment ring 411 and the transmission fixing plate 409.

[0039] By adopting the above technical solution, the triangular cam 506 drives the stainless steel frame 502 to vibrate through the guide rod 505.

[0040] The sliding adjustment frame 401 is fixedly connected to the sliding frame 305, a fourth bevel gear 604 is slidingly sleeved on the outer wall of the driving shaft 602, and the fourth bevel gear 604 is rotationally connected to the sliding adjustment frame 401, and a third bevel gear 308 is fixedly provided at the bottom end of the transmission shaft 306, and the third bevel gear 308 is meshingly connected to the fourth bevel gear 604.

[0041] By adopting the above technical solution, the driving shaft 602 drives the transmission shaft 306 to rotate.

[0042] A motor 603 is fixedly provided on the top of the built-in fixing plate 2 away from the fan blades 303, and the driving end of the motor 603 is connected to the driving shaft 602 through a pulley transmission group.

[0043] By adopting the above technical solution, the motor 603 drives the driving shaft 602 to rotate.

[0044] An electric cylinder 402 is fixedly provided on the outer side of the middle driving fixed plate 601 , and a driving end of the electric cylinder 402 penetrates the driving fixed plate 601 and is fixedly connected to the sliding adjustment frame 401 .

[0045] By adopting the above technical solution, the driving end of the electric cylinder 402 pushes the sliding adjustment frame 401 to move.

[0046] Two symmetrically distributed slide rails 309 are fixedly provided between the two top plates 301 , and the slide frame 305 is slidably connected to the slide rails 309 . Two symmetrically distributed guide rails 414 are fixedly provided at the bottom of the heat pump main body shell 1 , and the slide adjustment frame 401 is slidably connected to the guide rails 414 .

[0047] By adopting the above technical solution, the sliding frame 305 and the sliding adjustment frame 401 slide under the guidance of the sliding rail 309 and the guide rail 414 respectively.

[0048] Working principle: First, the motor 603 rotates in one direction. When the heat pump dryer is working normally, the second bevel gear 307 is meshed with the left first bevel gear 304. The motor 603 rotates through the drive shaft 602 and the transmission shaft 306 to drive the rotating shaft 302 and the fan blade 303 to rotate forward. At this time, the wind direction is from outside to inside. The grain dust will adhere to the outside of the filter 507 with the wind direction, causing the filter 507 to be blocked. When it is necessary to clean the dust adsorbed on the outside of the filter 507, first the motor 603 stops running, and the rotating shaft 302 rotates. After the movement stops, the electric cylinder 402 is controlled to start. The driving end of the electric cylinder 402 pushes the sliding adjustment frame 401 to move under the guidance of the guide rail 414. The movement of the sliding adjustment frame 401 drives the sliding frame 305 to move synchronously under the guidance of the slide rail 309, so that the second bevel gear 307 is separated from the first bevel gear 304 on the left and then meshes with the first bevel gear 304 on the right. At the same time, the sliding adjustment frame 401 drives the corresponding flip rod 404 through the guide column 406, the guide plate 407 and the guide groove 408 during the movement. The rotation connection of the fixed block 403 is the axis flipping. During the flipping process of the flip rod 404, the sliding adjustment ring 411 is driven by the adjustment column 405 to move along the guide of the driven shaft 410. The sliding adjustment ring 411 drives the friction wheel 412 to fit closely with the friction disk 605. The sliding adjustment ring 411 moves to stretch the reset spring 413, and then the motor 603 is controlled to start. The motor 603 drives the rotating shaft 302 and the fan blade 303 to rotate in the opposite direction through the driving shaft 602 and the transmission shaft 306. At this time, the wind direction is from inside to outside, and the driving shaft 60 2 rotates while driving the driven shaft 410 to rotate synchronously. The driven shaft 410 rotates through the triangular cam 506 and the guide rod 505 to drive the stainless steel frame 502 to vibrate under the action of the fixed frame 501, the buffer spring 504 and the fixed column 503. The vibration of the stainless steel frame 502 loosens the dust absorbed on the front of the filter 507 and falls off from the filter 507 under the action of the wind direction. When it is necessary to resume normal operation, it is only necessary to control the motor 603 to stop completely and control the driving end of the electric cylinder 402 to retract and reset.

[0049] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A heat pump grain dryer based on waterless automatic dust removal function, comprising a heat pump mainframe housing (1), characterized in that: An internal fixing plate (2) is fixedly provided on the inner wall of the heat pump mainframe housing (1); a wind direction adjustment component (3) is provided on the top of the internal fixing plate (2); an automatic adjustment cleaning component (4) and a driving component (6) are provided on the bottom of the heat pump mainframe housing (1); and a vibration cleaning component (5) is provided on the inner wall of the heat pump mainframe housing (1) on the side close to the wind direction adjustment component (3).

2. A heat pump grain dryer based on waterless automatic dust removal function as claimed in claim 1, characterized in that: The wind direction adjustment component (3) comprises two symmetrically distributed top plates (301), the two top plates (301) are respectively fixedly mounted on the top of the built-in fixed plate (2), a rotating shaft (302) is rotatably provided on the top plate (301), two symmetrically distributed first bevel gears (304) are fixedly sleeved on the outer wall of the rotating shaft (302), a fan blade (303) is fixedly provided at one end of the rotating shaft (302) close to the vibration cleaning component (5), a sliding frame (305) is slidably provided between the two top plates (301), a transmission shaft (306) is rotatably provided on the sliding frame (305), a second bevel gear (307) is fixedly provided on the top of the transmission shaft (306), and the second bevel gear (307) is meshingly connected with the first bevel gear (304).

3. A heat pump grain dryer based on waterless automatic dust removal function as claimed in claim 2, characterized in that: The driving assembly (6) comprises three symmetrically distributed driving fixing plates (601), each of which is fixedly mounted on the heat pump main unit housing (1); a driving shaft (602) is rotatably provided on the driving fixing plate (601), and a friction disc (605) is fixedly provided at one end of the driving shaft (602) close to the vibration cleaning assembly (5).

4. A heat pump grain dryer based on waterless automatic dust removal function as claimed in claim 3, characterized in that: The automatic adjustment cleaning component (4) comprises a sliding adjustment frame (401), the sliding adjustment frame (401) being slidably mounted on the heat pump mainframe housing (1), two symmetrically distributed fixed blocks (403) being fixedly mounted on the bottom of the heat pump mainframe housing (1) near the sliding adjustment frame (401), a flip rod (404) being rotatably mounted on the outer side of the fixed block (403), adjustment columns (405) being fixedly mounted on the opposite sides of the tops of the two flip rods (404), guide columns (406) being fixedly mounted on the outer sides of the bottoms of the two flip rods (404), two symmetrically distributed guide plates (407) being fixedly mounted on the top of the sliding adjustment frame (401), guide grooves (408) being provided on the guide plates (407) for use in conjunction with the guide columns (406), and the guide columns (406) sliding in the guide grooves (408).

5. A heat pump grain dryer based on waterless automatic dust removal function as claimed in claim 1, characterized in that: The vibration cleaning assembly (5) comprises a fixed frame (501), the fixed frame (501) being fixedly mounted on the inner wall of the heat pump main body housing (1) near the fan blade (303), a stainless steel frame (502) being slidably mounted on the fixed frame (501), a filter screen (507) being arranged on the outer side of the stainless steel frame (502), symmetrically distributed fixed columns (503) being fixedly mounted on both ends of the stainless steel frame (502), and four fixed columns (503) being inserted through the fixed frame (501), a buffer spring (504) being sleeved on the outer wall of the fixed column (503), and the two ends of the buffer spring (504) being fixedly connected to the fixed frame (501) and the stainless steel frame (502) respectively.

6. A heat pump grain dryer based on waterless automatic dust removal function as claimed in claim 1, characterized in that: The bottom of the heat pump main body housing (1) is fixedly provided with two symmetrically distributed transmission fixing plates (409), a driven shaft (410) is rotatably provided on the transmission fixing plate (409), a triangular cam (506) is fixedly sleeved on the outer wall of the driven shaft (410) close to the side of the stainless steel frame (502), a guide rod (505) is fixedly provided at the middle of the bottom end of the stainless steel frame (502), and the guide rod (505) is slidably connected to the triangular cam (506), and the driven shaft (41 0) A sliding sleeve on the side away from the triangular cam (506) is provided with a sliding adjustment ring (411) used in conjunction with the adjustment column (405); a friction wheel (412) used in conjunction with the friction disk (605) is fixedly provided on the end of the sliding adjustment ring (411) away from the triangular cam (506); a return spring (413) is sleeved on the outer wall of the driven shaft (410), and two ends of the return spring (413) are respectively fixedly connected to the sliding adjustment ring (411) and the transmission fixed plate (409).

7. A heat pump grain dryer based on waterless automatic dust removal function as claimed in claim 4, characterized in that: The sliding adjustment frame (401) is fixedly connected to the sliding frame (305); a fourth bevel gear (604) is slidingly sleeved on the outer wall of the driving shaft (602), and the fourth bevel gear (604) is rotationally connected to the sliding adjustment frame (401); a third bevel gear (308) is fixedly provided at the bottom end of the transmission shaft (306), and the third bevel gear (308) is meshingly connected to the fourth bevel gear (604).

8. The heat pump grain dryer based on waterless automatic dust removal function as claimed in claim 1, characterized in that: A motor (603) is fixedly provided on the top of the built-in fixing plate (2) on the side away from the fan blades (303), and the driving end of the motor (603) is connected to the driving shaft (602) via a pulley transmission group.

9. A heat pump grain dryer based on waterless automatic dust removal function as claimed in claim 3, characterized in that: An electric cylinder (402) is fixedly arranged on the outer side of the driving fixed plate (601) in the middle, and a driving end of the electric cylinder (402) penetrates the driving fixed plate (601) and is fixedly connected to the sliding adjustment frame (401).

10. A heat pump grain dryer based on waterless automatic dust removal function as claimed in claim 2, characterized in that: Two symmetrically distributed slide rails (309) are fixedly provided between the two top plates (301), and the slide frame (305) is slidably connected to the slide rails (309); two symmetrically distributed guide rails (414) are fixedly provided at the bottom of the heat pump main unit housing (1), and the slide adjustment frame (401) is slidably connected to the guide rails (414).

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