A grain silo emptying device

Abstract

The present invention discloses a grain silo emptying device, which relates to the field of devices used for unloading and loading; the device comprises a stirring unit for stirring grain in the lower side of the grain silo, a groove is provided on the top of the bottom plate of the grain silo, the grain silo is provided with a transfer unit for transferring grain on the bottom plate of the grain silo to the groove, and a first conveying assembly is provided in the groove for conveying the grain in the groove to the grain outlet of the grain silo; the grain outlet of the grain silo comprises at least two discharge holes provided on the wall of the grain silo from top to bottom, the discharge hole located at the bottom is connected to the groove, and a butterfly valve assembly that can rotate in a horizontal direction and whose rotation angle can be adjusted is provided in each discharge hole, and a second conveying assembly for conveying grain falling from the discharge hole is provided below at least two discharge holes; the existing silo emptying method has the problems of low efficiency and relatively unsafe, but the present device is highly efficient and relatively safe.

Description

Technical Field

[0001] The invention relates to the field of devices used for loading and unloading, and in particular to a grain silo emptying device. Background Art

[0002] Grain silos are warehouses used to store grain, typically located in dry, downwind, and conveniently located locations. Silo emptying refers to the process of emptying stored grain for cleaning, inspection, measurement, sorting, and processing. For example, when loading grain into Silo A, due to the long storage time, large temperature differences and uneven moisture content may occur. To balance the grain temperature and moisture content, the grain in Silo A is poured into Silo B based on weather forecasts and inventory conditions.

[0003] When emptying the warehouse, workers usually need to use iron rods and compressed air to poke the materials at the bottom of the warehouse, and then use compressed air to blow and tamp the materials at the top of the warehouse. This is inefficient and unsafe for the workers.

[0004] Therefore, the existing warehouse dumping method has the problems of low efficiency and relatively unsafe. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a grain silo emptying device with higher efficiency and greater safety.

[0006] In order to solve the above technical problems, the present invention provides a grain silo emptying device including a stirring unit for stirring the grain on the lower side of the grain silo, a channel is provided on the top of the bottom plate of the grain silo, and the grain silo is provided with a transfer unit for transferring the grain on the bottom plate of the grain silo to the channel, and the channel is provided with a first conveying component for conveying the grain in the channel to the grain outlet of the grain silo; the grain outlet of the grain silo includes at least two discharge holes opened on the wall of the grain silo from top to bottom, the discharge hole located at the bottom is connected to the channel, and the discharge holes are each provided with a butterfly valve assembly that can rotate in a horizontal direction and the rotation angle can be adjusted, and a second conveying component for conveying the grain falling from the discharge hole is provided below at least two discharge holes.

[0007] As a further improvement of the present invention: the stirring unit includes a circular frame fixedly mounted on the inner wall of the grain silo and a fixed platform whose center point coincides with the center point of the circular frame, at least three horizontal sliding rods are arranged between the inner wall of the circular frame and the outer wall of the fixed platform; a cylinder with a single-side opening and the opening facing downward is fixedly mounted on the top of the fixed platform, and a turntable is rotatably sleeved outside the cylinder; sliders are slidably mounted on the at least three sliding rods, and a stirring member for stirring grain is fixedly mounted on the top of the slider, and a second return spring is provided on the outer cover of the slider located between the fixed platform and the slider; a first sleeve for protecting the second return spring is vertically mounted on the outer wall of the fixed platform, and a second sleeve for protecting the second return spring is vertically mounted on the side of the slider away from the circular frame, the top of the slider is rotatably connected to one end of a horizontally arranged bent connecting rod, and the end of the bent connecting rod away from the slider is rotatably connected to the fixed platform; a driving member for driving the slider to slide back and forth on the slide rod is provided on the grain silo.

[0008] Preferably, the stirring member includes a vertical rod and a stirring plate fixedly mounted on the vertical rod, and the stirring plate is composed of three flat plates connected end to end in sequence.

[0009] Preferably, the driving member includes a vertical first motor arranged outside the grain silo and an eccentric wheel fixedly mounted on the top end of the output shaft of the first motor, the eccentric wheel includes a wheel body vertically fixedly mounted on the top end of the output shaft of the first motor and an eccentric shaft vertically fixedly mounted on the side of the wheel body away from the first motor, the eccentric shaft is rotatably connected to one end of the connecting rod, the end of the connecting rod away from the eccentric shaft is rotatably connected to one end of the rocker, and the end of the rocker away from the connecting rod passes through the wall of the grain silo and intermittently contacts the stirring member.

[0010] Preferably, the transfer unit includes a vertically arranged rotating shaft that is rotatably installed at the center of the fixed platform, and a scraper plate is fixedly installed at the lower end of the rotating shaft, and the scraper plate includes an inverted U-shaped frame fixedly installed at the lower end of the rotating shaft, and the horizontal end of the inverted U-shaped frame is fixedly connected to the rotating shaft, and the bottoms of the two vertical ends of the inverted U-shaped frame are respectively fixedly installed with bent plates for pushing the grain on the bottom plate of the grain silo into the channel; a horizontal second motor is fixedly installed outside the grain silo, and the output shaft of the second motor passes through the surrounding wall of the grain silo and the surrounding wall of the cylinder in turn and extends into the cylinder, and a protective cover is provided outside the part of the output shaft of the second motor located between the grain silo and the cylinder, and a first bevel gear is fixedly installed on the top end of the output shaft of the second motor located in the cylinder, and a second bevel gear meshing with the first bevel gear is installed on the end of the rotating shaft close to the first bevel gear.

[0011] As a further improvement of the present invention, the first transmission assembly includes a first spiral blade with a shaft rotatably installed in the channel and a third motor arranged outside the grain silo for driving the first spiral blade to rotate.

[0012] As a further improvement of the present invention: the butterfly valve assembly includes a valve shaft rotatably installed in the wall of the grain silo and capable of rotating in the horizontal direction, a butterfly plate fixedly installed on the valve shaft, and a control assembly for controlling the rotation angle of the valve shaft, and the butterfly plate is located in the discharge hole.

[0013] Preferably, the control assembly includes a first gear fixedly mounted on one end of the valve shaft and a valve handwheel rotatably mounted on an L-shaped frame, and a second gear meshing with the first gear is fixedly mounted on one end of the handwheel shaft of the valve handwheel located in the L-shaped frame; a stopper is provided in the L-shaped frame, which can slide back and forth along the axial direction of the valve shaft and is used to organize the rotation of the first gear.

[0014] Preferably, the stop member includes a capped rod slidably mounted on the wall of the L-shaped frame, the rod body of the capped rod is perpendicular to the wall of the L-shaped frame and passes through the wall of the L-shaped frame, and a stop plate is vertically mounted on the end of the rod body away from the cap body, and the side of the stop plate close to the first gear is an arc surface matching the first gear, and the arc surface is provided with a tooth portion that can engage with the first gear, and a first return spring is provided between the cap body and the wall of the L-shaped frame.

[0015] As a further improvement of the present invention: the second conveying assembly includes a conveying shell and a second spiral blade with a shaft rotatably installed in the conveying shell, and the conveying shell is installed with a fourth motor for driving the second spiral blade to rotate.

[0016] The beneficial effects of the present invention are as follows: (1) The grain silo emptying device provided by the present invention is highly efficient and relatively safe. The device stirs the grain through the stirring assembly to prevent the grain from clumping, so as to avoid the problem that the grain clumps cannot be poured out and are blocked at the valve, which requires manual loosening by staff. It is not only efficient but also greatly improves safety. (2) The grain outlet of the present invention includes at least two discharge holes opened from top to bottom on the wall of the grain silo, which can be opened in sequence from top to bottom to prevent excessive pressure on the grain. When used with a butterfly valve, the grain can be better dropped from the grain outlet. Combined with the transfer unit and the first transmission assembly in the channel, the grain at the bottom of the grain silo can be discharged cleanly, without the need for manual pounding of the grain at the grain outlet. It is highly efficient and relatively safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention and a partially cut-away grain silo;

[0018] Figure 2 A schematic diagram of the overall structure of the present invention and a partially cut-away grain silo from another angle;

[0019] Figure 3 It is a partial structural schematic diagram of the present invention;

[0020] Figure 4This is an assembly diagram of the circular ring frame, fixed platform, first sleeve, slide rod, etc. in the present invention;

[0021] Figure 5 Schematic diagram of the overall structure of the slider, the second sleeve, and the stirring plate in the present invention;

[0022] Figure 6 Schematic diagram of the overall structure of the stirring unit in the present invention;

[0023] Figure 7 This is a schematic diagram of the overall structure of the stirring unit in the present invention from another angle;

[0024] Figure 8 Schematic diagram of the positional relationship between the stirring unit and the transfer unit in the present invention;

[0025] Figure 9 It is a partial structural diagram of the transfer unit in the present invention;

[0026] Figure 10 This is an assembly diagram of the first transmission component and the grain silo, etc. in the present invention;

[0027] Figure 11 Schematic diagram of the overall structure of the butterfly valve assembly in the present invention;

[0028] Figure 12 It is a partial structural diagram of the butterfly valve assembly in the present invention;

[0029] Figure 13 It is an assembly diagram of the first transmission component, the butterfly valve component, and the second transmission component in the present invention;

[0030] The names of the components corresponding to the respective marks in the above drawings are: 1. grain silo; 101. channel; 102. protective shell; 103. L-shaped frame;

[0031] 2. Stirring unit; 201. Ring frame; 202. Fixed platform; 2021. First sleeve; 203. Sliding rod; 204. Cylinder; 205. Turntable; 206. Sliding block; 2061. Second sleeve; 207. Second return spring; 208. Bending connecting rod; 209. First motor; 2010. Eccentric wheel; 2011. Connecting rod; 2012. Rocker;

[0032] 3. Transfer unit; 301. Rotating shaft; 302. Scraper plate; 303. Second motor; 304. First bevel gear; 305. Second bevel gear;

[0033] 4. First transmission assembly; 401. First spiral blade; 402. Third motor;

[0034] 5. Butterfly valve assembly; 501. Valve shaft; 502. Butterfly plate; 503. First gear; 504. Valve handwheel; 505. Second gear; 506. Capped rod; 507. Stop plate; 508. First return spring;

[0035] 6. Second conveying assembly; 601. Conveying shell; 602. Second spiral blade; 603. Fourth motor. DETAILED DESCRIPTION

[0036] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. In this article, a vertical motor refers to a motor whose output shaft is perpendicular to the ground, and a horizontal motor refers to a motor whose output shaft is parallel to the ground.

[0037] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 13 As shown, a grain silo emptying device provided by the present invention includes a stirring unit 2 for stirring the grain on the lower side of the grain silo 1, a channel 101 is provided on the top of the bottom plate of the grain silo 1, and the grain silo 1 is provided with a transfer unit 3 for transferring the grain on the bottom plate of the grain silo 1 to the channel 101, and a first conveying component 4 is provided in the channel 101 for conveying the grain in the channel 101 to the grain outlet of the grain silo 1; the grain outlet of the grain silo 1 includes at least two discharge holes (four in the figure) provided on the wall of the grain silo 1 from top to bottom, and a protective shell 102 for protecting the at least two discharge holes is installed on the outer side of the wall of the grain silo 1, a feed port is provided on the top of the conveying shell 601, and the bottom of the protective shell 102 is connected to the feed port of the conveying shell 601, and a flip cover that can be rotated to open or close is provided on the top of the protective shell 102. The discharge situation of each discharge hole can be observed by opening the flip cover. An L-shaped frame 103 is fixedly mounted on one side of the protective shell 102. The lowest discharge hole is connected to the channel 101. Each discharge hole is equipped with a butterfly valve assembly 5 that can rotate horizontally and adjust the rotation angle. The butterfly valve assembly 5 is mounted on the protective shell 102 and the L-shaped frame 103. A second conveyor assembly 6 is installed below at least two of the discharge holes to convey the grain that falls from the discharge holes.

[0038] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8As shown, the stirring unit 2 includes a circular frame 201 fixedly mounted on the inner wall of the grain silo 1 and a fixed platform 202 whose center point coincides with the center point of the circular frame 201, and at least three horizontal slide bars 203 are provided between the inner wall of the circular frame 201 and the outer wall of the fixed platform 202; a cylinder 204 with a single-side opening and the opening facing downward is fixedly mounted on the top of the fixed platform 202, and a turntable 205 is rotatably sleeved on the outer side of the cylinder 204; a slider 206 is slidably mounted on at least three slide bars 203, and a limit block for limiting the sliding range of the slider 206 is fixedly mounted on one end of the slider 203 close to the circular frame 201, and a stirring member for stirring the grain is fixedly mounted on the top of the slider 206, and a second return spring 2 is provided on the outer cover of the slide bar 203 located between the fixed platform 202 and the slider 206. 07, one end of the second return spring 207 is fixedly connected to the outer wall of the fixed platform 202, and the other end is fixedly connected to the side of the slider 206 away from the circular frame 201; a first sleeve 2021 for protecting the second return spring 207 is vertically installed on the outer wall of the fixed platform 202, and a second sleeve 2061 for protecting the second return spring 207 is vertically installed on the side of the slider 206 away from the circular frame 201. The inner diameter of the cross-section of the second sleeve 2061 is larger than the outer diameter of the cross-section of the first sleeve 2021. The top of the slider 206 is rotatably connected to one end of a horizontally arranged bent connecting rod 208, and the end of the bent connecting rod 208 away from the slider 206 is rotatably connected to the bottom of the fixed platform 202; the grain silo 1 is provided with a driving member for driving the slider 206 to slide back and forth on the slide rod 203. The stirring member includes a vertical rod and a Z-shaped stirring plate fixedly installed on the vertical rod. The stirring plate is composed of three flat plates connected end to end. The driving member includes a vertical first motor 209 arranged outside the grain silo 1 and an eccentric wheel 2010 fixedly mounted on the top of the output shaft of the first motor 209. The eccentric wheel 2010 includes a wheel body vertically fixedly mounted on the top of the output shaft of the first motor 209 and an eccentric shaft vertically fixedly mounted on the side of the wheel body away from the first motor 209. The eccentric shaft is rotatably connected to one end of the connecting rod 2011, and the end of the connecting rod 2011 away from the eccentric shaft is rotatably connected to one end of the rocker 2012. The end of the rocker 2012 away from the connecting rod 2011 passes through the wall of the grain silo 1 and intermittently contacts the stirring member.

[0039] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 8 、 Figure 9As shown, the transfer unit 3 includes a vertically arranged rotating shaft 301 that is rotatably installed at the center of the fixed platform 202. A scraper plate 302 is fixedly installed at the lower end of the rotating shaft 301. The scraper plate 302 includes an inverted U-shaped frame fixedly installed at the lower end of the rotating shaft 301. The inverted U-shaped frame includes a horizontal end and two vertical ends. The horizontal end of the inverted U-shaped frame is fixedly connected to the rotating shaft 301. The bottoms of the two vertical ends of the inverted U-shaped frame are respectively fixedly installed with bending plates for pushing the grain on the bottom plate of the grain silo 1 into the channel 101; a horizontal second motor 303 is fixedly installed outside the grain silo 1, and the output of the second motor 303 The shaft passes through the surrounding wall of the grain silo 1 and the surrounding wall of the cylinder 204 in sequence and then extends into the cylinder 204. A protective cover is provided on the outside of the output shaft of the second motor 303 located between the grain silo 1 and the cylinder 204. One end of the protective cover is fixedly connected to the outer wall of the cylinder 204, and the other end is fixedly connected to the inner wall of the grain silo 1 to prevent the grain from contacting the output shaft. A first bevel gear 304 is fixedly installed on the top end of the output shaft of the second motor 303 located in the cylinder 204, and a second bevel gear 305 meshing with the first bevel gear 304 is installed on the end of the rotating shaft 301 close to the first bevel gear 304.

[0040] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 11 、 Figure 12 、 Figure 13 As shown, the butterfly valve assembly 5 includes a valve shaft 501 rotatably mounted in the wall of the grain silo 1 for horizontal rotation, a butterfly plate 502 fixedly mounted on the valve shaft 501, and a control assembly for controlling the rotation angle of the valve shaft 501. The butterfly plate 502 is located in the discharge port. The control assembly includes a first gear 503 fixedly mounted on one end of the valve shaft 501 and a valve handwheel 504 rotatably mounted on an L-shaped frame 103. The handwheel shaft of the valve handwheel 504 is located in the L-shaped frame 103 and is fixedly mounted on one end thereof with a second gear 505 that meshes with the first gear 503. The L-shaped frame 103 is provided with a stopper that can slide back and forth along the axial direction of the valve shaft 501 to prevent the rotation of the first gear 503. The stopper comprises a capped rod 506 slidably mounted on the wall of the L-shaped frame 103. The capped rod 506 comprises a rod body and a plate-shaped cap perpendicularly mounted at one end of the rod body. The rod body of the capped rod 506 is perpendicular to the wall of the L-shaped frame 103 and passes through the wall of the L-shaped frame 103. A stop plate 507 is vertically installed on the end of the rod body away from the cap body. The side of the stop plate 507 close to the first gear 503 is an arc surface that matches the first gear 503. The arc surface is provided with a tooth portion that can engage with the first gear 503. A first return spring 508 is provided between the cap body and the wall of the L-shaped frame 103. When the first return spring 508 is in a naturally extended state, the tooth portion of the stop plate 507 engages with the first gear 503, and the first gear 503 is in a fixed state.

[0041] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 10 、 Figure 13 As shown, the first conveying assembly 4 includes a first spiral blade 401 with a shaft rotatably mounted in the channel 101, and a third horizontal motor 402 disposed outside the grain silo 1 for driving the first spiral blade 401 to rotate. The second conveying assembly 6 includes a conveying housing 601 and a second spiral blade 602 with a shaft rotatably mounted in the conveying housing 601. The conveying housing 601 is equipped with a fourth horizontal motor 603 for driving the second spiral blade 602 to rotate.

[0042] The working principle of the present invention is as follows: in order to better avoid the phenomenon of compaction and facilitate the falling of grain when emptying the silo, when it is necessary to stir the grain, start the first motor 209, the output shaft of the first motor 209 drives the eccentric wheel 2010 to rotate, and the eccentric wheel 2010 drives the connecting rod 2011 to perform planar compound motion through the eccentric shaft. The rocker 2012 slides back and forth in the hole driven by the connecting rod 2011 and the limiting action of the hole on the wall of the grain silo 1 for the rocker 2012 to pass through. When the eccentric wheel 2010 rotates and the eccentric shaft gradually approaches the grain silo 1, the rocker 2012 moves axially along the sliding rod 203 toward the fixed platform 202, contacts the vertical rod of the stirring piece, and makes the sliding rod 203 move closer to the fixed platform 202. The block 206 slides on the slide bar 203 toward the fixed platform 202, the second return spring 207 is compressed, the second sleeve 2061 slides outside the first sleeve 2021, and the bent connecting rod 208 drives the turntable 205 to rotate around the cylinder 204. Subsequently, when the eccentric wheel 2010 rotates and the eccentric shaft gradually moves away from the grain silo 1, the rocker 2012 moves axially along the slide bar 203 away from the fixed platform 202. The rocker 2012 no longer contacts the stirring member, the second return spring 207 gradually extends back to its natural extension state, the block 206 slides on the slide bar 203 away from the fixed platform 202, and the bent connecting rod 208 drives the turntable 205 back to its initial position. By repeating the above process, the stirring plate can continuously stir the grain, vibrating it, thereby loosening it and reducing the probability of caking.

[0043] Initially, the butterfly plate 502 is in a vertical position and the discharge port is closed. When emptying the valve, the cap of the capped rod 506 is pressed, compressing the first return spring 508. The capped rod 506 drives the stop plate 507 to move axially along the valve shaft 501, toward the end of the valve shaft 501 away from the first gear 503. The stop plate 507 separates from the first gear 503, allowing the first gear 503 to rotate freely. Turning the valve handwheel 504 drives the second gear 505, which in turn drives the first gear 503. The first gear 503 drives the valve shaft 501, which in turn drives the butterfly plate 502, thereby opening the discharge port. When the butterfly plate 502 opens to the desired angle, the valve handwheel 504 is stopped and the cap is no longer pressed. The first return spring 508 gradually extends, driving the stop plate 507 back to its initial position, where it engages with the first gear 503, preventing it from rotating and maintaining the butterfly plate 502 at the desired angle. Grain falls from the discharge hole into the conveyor housing 601. The fourth motor 603 is activated to rotate the second spiral blade 602, conveying the grain toward the end of the conveyor housing 601 away from the discharge hole. When the grain reaches the height of the top of the bent plate, the second motor 303 is activated. The output shaft of the second motor 303 rotates the first bevel gear 304, which in turn rotates the rotating shaft 301 via the second bevel gear 305, thereby rotating the scraper plate 302. The rotation of the scraper plate 302 pushes the grain to move across the bottom plate of the grain silo 1. When the grain reaches the channel 101, it falls into the channel 101. The third motor 402 is activated to rotate the first spiral blade 401, spirally conveying the grain in the channel 101 toward the discharge hole at the bottom.

Claims

1. A grain silo emptying device, characterized in that: The invention comprises a stirring unit (2) for stirring grain on the lower side of a grain silo (1); a channel (101) is provided on the top of the bottom plate of the grain silo (1); the grain silo (1) is provided with a transfer unit (3) for transferring grain on the bottom plate of the grain silo (1) to the channel (101); and a first conveying component (4) is provided in the channel (101) for conveying grain in the channel (101) to a grain outlet of the grain silo (1); The grain outlet of the grain silo (1) comprises at least two discharge holes opened on the wall of the grain silo (1) from top to bottom, the discharge hole located at the bottom is connected to the channel (101), and a butterfly valve assembly (5) capable of rotating in a horizontal direction and having an adjustable rotation angle is provided in each discharge hole, and a second conveying assembly (6) for conveying grain falling from the discharge hole is provided below at least two discharge holes; The stirring unit (2) comprises a circular frame (201) fixedly mounted on the inner wall of the grain silo (1) and a fixed platform (202) whose center point coincides with the center point of the circular frame (201), and at least three horizontal sliding rods (203) are provided between the inner wall of the circular frame (201) and the outer wall of the fixed platform (202); A cylinder (204) with a single-side opening facing downward is fixedly mounted on the top of the fixed platform (202), and a turntable (205) is rotatably sleeved on the outside of the cylinder (204); At least three of the slide bars (203) are slidably mounted with a slider (206), a stirring member for stirring grain is fixedly mounted on the top of the slider (206), and a second return spring (207) is provided on the outer sleeve of the slide bar (203) located between the fixed platform (202) and the slider (206); a first sleeve (2021) for protecting the second return spring (207) is vertically mounted on the outer wall of the fixed platform (202), and a second sleeve (2061) for protecting the second return spring (207) is vertically mounted on the side of the slider (206) away from the circular frame (201); the top of the slider (206) is rotatably connected to one end of a horizontally arranged bending connecting rod (208), and the end of the bending connecting rod (208) away from the slider (206) is rotatably connected to the fixed platform (202); The grain silo (1) is provided with a driving member for driving the slider (206) to slide back and forth on the slide rod (203); The driving member comprises a vertical first motor (209) arranged outside the grain silo (1) and an eccentric wheel (2010) fixedly mounted on the top end of the output shaft of the first motor (209); The butterfly valve assembly (5) comprises a valve shaft (501) rotatably mounted in the wall of the grain silo (1) and capable of rotating in a horizontal direction, a butterfly plate (502) fixedly mounted on the valve shaft (501), and a control assembly for controlling the rotation angle of the valve shaft (501), wherein the butterfly plate (502) is located in the discharge hole; The control assembly comprises a first gear (503) fixedly mounted on one end of the valve shaft (501) and a valve handwheel (504) rotatably mounted on the L-shaped frame (103); The L-shaped frame (103) is provided with a rotation-stopping member capable of sliding back and forth along the axial direction of the valve shaft (501) and for preventing the first gear (503) from rotating.

2. A grain silo emptying device according to claim 1, characterized in that: The stirring member comprises a vertical rod and a stirring plate fixedly mounted on the vertical rod, and the stirring plate is composed of three flat plates connected end to end in sequence.

3. A grain silo emptying device according to claim 1, characterized in that: The eccentric wheel (2010) comprises a wheel body vertically fixedly mounted on the top end of the output shaft of the first motor (209) and an eccentric shaft vertically fixedly mounted on a side of the wheel body away from the first motor (209); the eccentric shaft is rotatably connected to one end of a connecting rod (2011); the end of the connecting rod (2011) away from the eccentric shaft is rotatably connected to one end of a rocking rod (212); the end of the rocking rod (2012) away from the connecting rod (2011) penetrates the wall of the grain silo (1) and comes into intermittent contact with the stirring member.

4. A grain silo emptying device according to claim 1, characterized in that: The transfer unit (3) includes a vertically arranged rotating shaft (301) that is rotatably mounted at the center of the fixed platform (202), a scraper plate (302) being fixedly mounted on the lower end of the rotating shaft (301), and the scraper plate (302) including an inverted U-shaped frame fixedly mounted on the lower end of the rotating shaft (301), a horizontal end of the inverted U-shaped frame being fixedly connected to the rotating shaft (301), and a bending plate for pushing grain on the bottom plate of the grain silo (1) into the channel (101) being fixedly mounted on the bottom of the two vertical ends of the inverted U-shaped frame; A horizontal second motor (303) is fixedly installed outside the grain silo (1); an output shaft of the second motor (303) sequentially penetrates the surrounding wall of the grain silo (1) and the surrounding wall of the cylinder (204) and then extends into the cylinder (204); a protective sleeve is provided on the outside of the output shaft of the second motor (303) located between the grain silo (1) and the cylinder (204); a first bevel gear (304) is fixedly installed on the top end of the output shaft of the second motor (303) located in the cylinder (204); and a second bevel gear (305) meshing with the first bevel gear (304) is installed on one end of the rotating shaft (301) close to the first bevel gear (304).

5. A grain silo emptying device according to any one of claims 1 to 4, characterized in that: The first transmission assembly (4) comprises a first spiral blade (401) with a shaft rotatably mounted in a channel (101) and a third motor (402) disposed outside the grain silo (1) for driving the first spiral blade (401) to rotate.

6. A grain silo emptying device according to claim 1, characterized in that: A second gear (505) meshing with the first gear (503) is fixedly mounted on one end of the handwheel shaft of the valve handwheel (504) located in the L-shaped frame (103).

7. A grain silo emptying device according to claim 1, characterized in that: The anti-rotation member comprises a capped rod (506) slidably mounted on the wall surface of the L-shaped frame (103); the rod body of the capped rod (506) is perpendicular to the wall surface of the L-shaped frame (103) and penetrates the wall surface of the L-shaped frame (103); a stop plate (507) is vertically mounted on one end of the rod body away from the cap body; a surface of the stop plate (507) close to the first gear (503) is an arc surface matching the first gear (503); a tooth portion capable of meshing with the first gear (503) is provided on the arc surface; and a first return spring (508) is provided between the cap body and the wall surface of the L-shaped frame (103).

8. A grain silo emptying device according to any one of claims 1 to 4, characterized in that: The second conveying assembly (6) comprises a conveying shell (601) and a second spiral blade (602) with an axis rotatably mounted in the conveying shell (601). The conveying shell (601) is equipped with a fourth motor (603) for driving the second spiral blade (602) to rotate.

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