Grain silo pouring device

Abstract

The invention discloses a silo pouring device for a grain silo, and relates to the field of devices for unloading and loading. The device comprises a stirring unit used for stirring grains on the lower side in the grain silo, a channel is formed in the top of a bottom plate of the grain silo, and the grain silo is provided with a transferring unit used for transferring the grains on the bottom plate of the grain silo into the channel. A first conveying assembly used for conveying grains in the channel to a grain outlet of the grain silo is arranged in the channel; a grain outlet of the grain silo comprises at least two discharging holes formed in the enclosure wall of the grain silo from top to bottom, the discharging hole located at the lowermost portion is communicated with the channel, butterfly valve assemblies capable of rotating in the horizontal direction are arranged in the discharging holes, and the rotating angles of the butterfly valve assemblies can be adjusted. A second conveying assembly used for conveying the grains falling from the discharging holes is arranged below the at least two discharging holes. An existing bin pouring method has the problems of low efficiency and relatively low safety, but the device is relatively high in efficiency and relatively safe.

Description

Technical Field

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

[0002] Grain silos are warehouses used to store grain, usually located in high and dry areas with convenient transportation and downwind. Emptying the silo refers to the process of emptying the stored grain for a series of operations such as cleaning, inspection, measurement, classification, and processing. For example, when loading grain into silo A, due to the long operation time of grain storage, there are problems such as large temperature difference and uneven moisture. In order to balance the grain temperature and moisture, the grain in silo A is poured into silo B according to the weather forecast and grain storage 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 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] To solve the above technical problems, the present invention provides a grain silo emptying device, including a stirring unit for stirring grain in the lower side of the grain silo, a channel 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 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 provided on the wall of the grain silo from top to bottom, the discharge hole at the bottom is connected with the channel, the discharge holes are provided with butterfly valve components that can rotate in a horizontal direction and whose rotation angle can be adjusted, and a second conveying component for conveying 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 ring frame fixedly installed on the inner wall of the grain silo and a fixed platform with its center point coinciding with the center point of the circular ring frame. At least three horizontal sliding rods are arranged between the inner wall of the circular ring frame and the outer wall of the fixed platform; a cylinder body with a single-side opening and the opening facing downward is fixedly installed on the top of the fixed platform, and a turntable is rotatably sleeved outside the cylinder body; at least three sliding blocks are slidably installed on the sliding rods, and a stirring member for stirring the grain is fixedly installed on the top of the sliding block. A second return spring is sleeved outside the part of the sliding rod between the fixed platform and the sliding block; a first sleeve for protecting the second return spring is vertically installed on the outer wall of the fixed platform, a second sleeve for protecting the second return spring is vertically installed on the side of the sliding block away from the circular ring frame, one end of the sliding block is rotatably connected to one end of a horizontally arranged bent connecting rod, and the other end of the bent connecting rod away from the sliding block is rotatably connected to the fixed platform; a driving member for driving the sliding block to reciprocally slide on the sliding rod is arranged on the grain silo.

[0008] Preferably, the stirring member includes a vertical rod and a stirring plate fixedly installed on the vertical rod, and the stirring plate is composed of three flat plates that are sequentially connected end to end.

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

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

[0011] As a further improvement of the present invention: The first conveying assembly includes a shaft-type first spiral blade 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 a 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 and is capable of reciprocatingly sliding along the axial direction of the valve shaft and is used to organize the rotation of the first gear.

[0014] Preferably, the stopper 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, a stop plate is vertically mounted on the end of the rod body away from the cap body, a surface of the stop plate close to the first gear is an arc surface matching the first gear, a tooth portion that can mesh with the first gear is arranged on the arc surface, and a first return spring is arranged 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 component 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 on the wall of the grain silo from top to bottom, which can be opened from top to bottom in sequence to prevent excessive pressure on the grain from pouring out. When used in conjunction with a butterfly valve, the grain can be better dropped from the grain outlet. Combined with the transfer unit and the first transmission component in the channel, the grain at the bottom of the grain silo can be discharged cleanly, without the need for manual pounding of 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; Figure 2 It is a schematic diagram of the overall structure of the present invention and a partially cut-away grain silo from another angle; Figure 3 It is a partial structural schematic diagram of the present invention; Figure 4 It is an assembly diagram of the circular ring frame, the fixing platform, the first sleeve, the sliding rod, etc. in the present invention; Figure 5 Schematic diagram of the overall structure of the slider, the second sleeve, and the stirring plate in the present invention; Figure 6 Schematic diagram of the overall structure of the stirring unit in the present invention; Figure 7 Schematic diagram of the overall structure of the stirring unit from another angle in the present invention; Figure 8 Schematic diagram of the positional relationship between the stirring unit and the transfer unit in the present invention; Figure 9 Partial structure schematic diagram of the transfer unit in the present invention; Figure 10 Assembly drawing of the first conveying component and the grain silo, etc. in the present invention; Figure 11 Schematic diagram of the overall structure of the butterfly valve assembly in the present invention; Figure 12 Partial structure schematic diagram of the butterfly valve assembly in the present invention; Figure 13 Assembly drawing of the first conveying component, the butterfly valve assembly, and the second conveying component in the present invention; The names of the components corresponding to the marks in the above drawings are: 1, grain silo; 101, channel; 102, protective shell; 103, L-shaped frame; 2, stirring unit; 201, circular ring frame; 202, fixed platform; 2021, first sleeve; 203, sliding rod; 204, cylinder body; 205, turntable; 206, slider; 2061, second sleeve; 207, second return spring; 208, bent connecting rod; 209, first motor; 2010, eccentric wheel; 2011, connecting rod; 2012, rocker; 3, transfer unit; 301, rotating shaft; 302, scraping plate; 303, second motor; 304, first bevel gear; 305, second bevel gear; 4, first conveying component; 401, first spiral blade; 402, third motor; 5, butterfly valve assembly; 501, valve shaft; 502, butterfly plate; 503, first gear; 504, valve handwheel; 505, second gear; 506, cap rod; 507, stop plate; 508, first return spring; 6, second conveying component; 601, conveying shell; 602, second spiral blade; 603, fourth motor. Detailed implementation manners

[0018] The following further describes the detailed implementation manners of the present invention with reference to the drawings. The vertical motor mentioned in the text means that the output shaft of the motor is perpendicular to the ground, and the horizontal motor means that the output shaft of the motor is parallel to the ground.

[0019] AsFigure 1 , Figure 2 , Figure 3 , Figure 13 As shown in Figure 1 , Figure 2 , Figure 3 , and Figure 13 , an inverted silo device for a grain silo provided by the present invention includes a stirring unit 2 for stirring the grain in the lower side of the grain silo 1. A channel 101 is opened at the top of the bottom plate of the grain silo 1. 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. A first conveyor assembly 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) opened in the surrounding wall of the grain silo 1 from top to bottom. A protective shell 102 for protecting at least two discharge holes is installed on the outer side of the surrounding wall of the grain silo 1. An inlet opening is opened at the top of the conveying shell 601. The bottom of the protective shell 102 is connected to the inlet opening of the conveying shell 601. A flip cover that can be rotated to open or close is provided at the top of the protective shell 102. Opening the flip cover can observe the discharging condition of each discharge hole. An L-shaped frame 103 is fixedly installed on one side of the protective shell 102. The lowermost discharge hole is connected to the channel 101. A butterfly valve assembly 5 that can rotate around the horizontal direction and the rotation angle can be adjusted is provided in each discharge hole. The butterfly valve assembly 5 is installed on the protective shell 102 and the L-shaped frame 103. A second conveyor assembly 6 for conveying the grain falling from the discharge holes is provided below at least two discharge holes.

[0020] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8As shown, the stirring unit 2 includes an annular frame 201 fixedly installed on the inner wall of the grain silo 1 and a fixed platform 202 whose center point coincides with the center point of the annular frame 201. At least three horizontal sliding rods 203 are arranged between the inner wall of the annular frame 201 and the outer wall of the fixed platform 202; a cylinder 204 with a single-side opening and the opening facing down is fixedly installed on the top of the fixed platform 202, and a turntable 205 is rotatably sleeved outside the cylinder 204; sliders 206 are slidably installed on at least three sliding rods 203, and a limiting block for limiting the sliding range of the slider 206 is fixedly installed at one end of the sliding rod 203 close to the annular frame 201. A stirring member for stirring the grain is fixedly installed on the top of the slider 206. A second return spring 207 is sleeved outside the part of the sliding rod 203 between the fixed platform 202 and the slider 206. 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 annular 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 annular 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 other end of the bent connecting rod 208 away from the slider 206 is rotatably connected to the bottom of the fixed platform 202; a driving member for driving the slider 206 to reciprocally slide on the sliding rod 203 is arranged on the grain silo 1. 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 that are sequentially 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 installed at the top of the output shaft of the first motor 209. The eccentric wheel 2010 includes a wheel body vertically fixedly installed at the top of the output shaft of the first motor 209 and an eccentric shaft vertically fixedly installed on the 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, and the other end of the connecting rod 2011 away from the eccentric shaft is rotatably connected to one end of a rocker 2012. The other end of the rocker 2012 away from the connecting rod 2011 penetrates through the enclosure wall of the grain silo 1 and intermittently contacts the stirring member.

[0021] As Figure 1 , Figure 2 , Figure 3 , Figure 8 , Figure 9As shown, the transfer unit 3 includes a vertically arranged rotating shaft 301 rotatably installed through the center of the fixed table 202. A scraping plate 302 is fixedly installed at the lower end of the rotating shaft 301. The scraping 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. Bent plates for pushing the grains on the bottom plate of the grain silo 1 into the channel 101 are respectively fixedly installed at the bottoms of the two vertical ends of the inverted U-shaped frame; A horizontal second motor 303 is fixedly installed outside the grain silo 1. The output shaft of the second motor 303 sequentially penetrates the enclosure wall of the grain silo 1 and the enclosure wall of the cylinder body 204 and then extends into the cylinder body 204. A protective sleeve is arranged outside the part of the output shaft of the second motor 303 between the grain silo 1 and the cylinder body 204. One end of the protective sleeve is fixedly connected to the outer wall of the cylinder body 204, and the other end is fixedly connected to the inner wall of the grain silo 1 to prevent the grains from contacting the output shaft. A first bevel gear 304 is fixedly installed at the top of the output shaft of the second motor 303 located in the cylinder body 204. A second bevel gear 305 meshing with the first bevel gear 304 is installed at one end of the rotating shaft 301 close to the first bevel gear 304.

[0022] As 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 installed in the enclosure wall of the grain silo 1 and capable of rotating around the horizontal direction, a butterfly plate 502 fixedly installed 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 hole. The control assembly includes a first gear 503 fixedly installed at one end of the valve shaft 501 and a valve handwheel 504 rotatably installed on the L-shaped frame 103. A second gear 505 meshing with the first gear 503 is fixedly installed at one end of the handwheel shaft of the valve handwheel 504 located in the L-shaped frame 103; A rotation stopping member for preventing the first gear 503 from rotating and capable of reciprocatingly sliding along the axial direction of the valve shaft 501 is arranged in the L-shaped frame 103. The rotation stopping member includes a cap rod 506 slidably installed on the wall surface of the L-shaped frame 103. The cap rod 506 includes a rod body and a plate-shaped cap body perpendicularly installed at one end of the rod body. The rod body of the cap 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 perpendicularly installed at the end of the rod body away from the cap body. The surface of the stop plate 507 close to the first gear 503 is an arc surface matching the first gear 503. Tooth portions capable of meshing with the first gear 503 are arranged on the arc surface. A first return spring 508 is arranged between the cap body and the wall surface of the L-shaped frame 103. When the first return spring 508 is in the natural elongation state, the tooth portions of the stop plate 507 mesh with the first gear 503, and the first gear 503 is in a fixed state.

[0023] As Figure 1 , Figure 2 , Figure 3 , Figure 10 , Figure 13 shown, the first conveying assembly 4 includes a shafted first spiral blade 401 rotatably installed in the channel 101 and a horizontal third motor 402 arranged outside the grain silo 1 for driving the first spiral blade 401 to rotate. The second conveying assembly 6 includes a conveying shell 601 and a shafted second spiral blade 602 rotatably installed in the conveying shell 601, and a horizontal fourth motor 603 for driving the second spiral blade 602 to rotate is installed on the conveying shell 601.

[0024] The working principle of the present invention is as follows: To better avoid caking and facilitate the falling of grains during silo turnover, when it is necessary to agitate the grains, the first motor 209 is started. The output shaft of the first motor 209 drives the eccentric wheel 2010 to rotate. The eccentric wheel 2010 drives the connecting rod 2011 to perform a planar compound motion through the eccentric shaft. The rocker 2012 reciprocally slides in the hole under the driving of the connecting rod 2011 and the limiting action of the hole on the surrounding wall of the grain silo 1 through which the rocker 2012 passes. When the eccentric wheel 2010 rotates and the eccentric shaft gradually approaches the grain silo 1, the rocker 2012 moves along the axial direction of the sliding rod 203 towards the direction close to the fixed platform 202, contacts the vertical rod of the stirring member, so that the slider 206 slides on the sliding rod 203 towards the direction close to 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 body 204; subsequently, when the eccentric wheel 2010 rotates and the eccentric shaft gradually moves away from the grain silo 1, the rocker 2012 moves along the axial direction of the sliding rod 203 towards the direction away from the fixed platform 202, the rocker 2012 no longer contacts the stirring member, the second return spring 207 gradually elongates to return to the natural elongation state, the slider 206 slides on the sliding rod 203 towards the direction away from the fixed platform 202, and the bent connecting rod 208 drives the turntable 205 back to the initial position. By continuously repeating the above process, the stirring plate can be continuously agitated in the grains, causing it to vibrate, thus loosening and reducing the probability of caking.

[0025] Initially, the butterfly plate 502 is in a vertical state and the discharge hole is in a closed state. When the bin needs to be emptied, press the cap body of the cap rod 506. The first return spring 508 is compressed. The cap rod 506 drives the stop plate 507 to move along the axial direction of the valve shaft 501 towards the end of the valve shaft 501 away from the first gear 503. The stop plate 507 is separated from the first gear 503. At this time, the first gear 503 can rotate freely. Rotate the valve handwheel 504 to drive the second gear 505 to rotate. The second gear 505 drives the first gear 503 to rotate. The first gear 503 drives the valve shaft 501 to rotate. The valve shaft 501 drives the butterfly plate 502 to rotate, so that the discharge hole is opened. When the butterfly plate 502 is opened to the expected angle, stop rotating the valve handwheel 504 and stop pressing the cap body. The first return spring 508 gradually elongates, driving the stop plate 507 back to the initial position and engaging with the first gear 503 to prevent the first gear 503 from rotating, so that the butterfly plate 502 is maintained at this angle. The grain falls from the discharge hole into the conveying shell 601. The fourth motor 603 starts to drive the second spiral blade 602 to rotate, and conveys the grain towards the end of the conveying shell 601 away from the discharge hole. When the grain falls to the height where the top of the bending plate is located, the second motor 303 can be started. The output shaft of the second motor 303 drives the first bevel gear 304 to rotate. The first bevel gear 304 drives the rotating shaft 301 to rotate through the second bevel gear 305, thereby driving the scraping plate 302 to rotate. When the scraping plate 302 rotates, it will push the grain to move on the bottom plate of the grain silo 1. When the grain reaches the channel 101, it will fall into the channel 101. The third motor 402 starts to drive the first spiral blade 401 to rotate, and conveys the grain in the channel 101 spirally towards the discharge hole at the bottommost position.

Claims

1. A device for emptying and filling a grain silo, characterized in that, It includes a stirring unit (2) for stirring the grain at the lower side in the grain silo (1). A channel (101) is opened at the top of the bottom plate of the grain silo (1). 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). A first conveying assembly (4) for conveying the grain in the channel (101) to the grain outlet of the grain silo (1) is arranged in the channel (101). The grain outlet of the grain silo (1) includes at least two discharge holes opened in the surrounding wall of the grain silo (1) from top to bottom. The lowermost discharge hole is communicated with the channel (101). Butterfly valve assemblies (5) capable of rotating around the horizontal direction and with adjustable rotation angles are arranged in the discharge holes. A second conveying assembly (6) for conveying the grain falling from the discharge holes is arranged below the at least two discharge holes.

2. The inverted silo device for a grain silo according to claim 1, characterized in that, The stirring unit (2) includes an annular frame (201) fixedly installed on the inner wall of the grain silo (1) and a fixed platform (202) with the center point coinciding with the center point of the annular frame (201). At least three horizontal sliding rods (203) are arranged between the inner wall of the annular frame (201) and the outer wall of the fixed platform (202). A cylinder body (204) with a single-side opening and the opening facing downwards is fixedly installed on the top of the fixed platform (202). A turntable (205) is rotatably sleeved outside the cylinder body (204). Sliders (206) are slidably installed on at least three of the sliding rods (203). Stirring members for stirring the grain are fixedly installed on the tops of the sliders (206). A second return spring (207) is sleeved outside the part of the sliding rod (203) between the fixed platform (202) and the slider (206). A first sleeve (2021) for protecting the second return spring (207) is vertically installed on the outer wall of the fixed platform (202). A second sleeve (2061) for protecting the second return spring (207) is vertically installed on the side of the slider (206) away from the annular frame (201). The top of the slider (206) is rotatably connected to one end of a horizontally arranged bent connecting rod (208). The end of the bent connecting rod (208) away from the slider (206) is rotatably connected to the fixed platform (202). A driving member for driving the slider (206) to reciprocally slide on the sliding rod (203) is arranged on the grain silo (1).

3. The reverse silo device for a grain silo according to claim 2, characterized in that, The stirring member includes a vertical rod and stirring plates fixedly installed on the vertical rod. The stirring plates are composed of three flat plates connected end to end in sequence.

4. The reverse silo device for a grain silo according to claim 2, wherein, The driving member includes a vertical first motor (209) disposed outside the grain silo (1) and an eccentric wheel (2010) fixedly installed at the top of the output shaft of the first motor (209). The eccentric wheel (2010) includes a wheel body vertically and fixedly installed at the top of the output shaft of the first motor (209) and an eccentric shaft vertically and fixedly installed on the surface of the wheel body away from the first motor (209). The eccentric shaft is rotatably connected to one end of a connecting rod (2011), and the end of the connecting rod (2011) away from the eccentric shaft is rotatably connected to one end of a rocker (2012). The end of the rocker (2012) away from the connecting rod (2011) penetrates through the enclosure wall of the grain silo (1) and intermittently contacts the stirring member.

5. The reverse silo device for a grain silo according to claim 2, characterized in that, The transfer unit (3) includes a vertically arranged rotating shaft (301) rotatably installed through the center of the fixed platform (202). A scraping plate (302) is fixedly installed at the lower end of the rotating shaft (301). The scraping plate (302) includes an inverted U-shaped frame fixedly installed at the lower end of the rotating shaft (301). The horizontal end of the inverted U-shaped frame is fixedly connected to the rotating shaft (301), and bending plates for pushing the grain on the bottom plate of the grain silo (1) into the channel (101) are respectively fixedly installed at the bottoms of the two vertical ends of the inverted U-shaped frame. A horizontal second motor (303) is fixedly installed outside the grain silo (1). The output shaft of the second motor (303) sequentially penetrates through the enclosure wall of the grain silo (1) and the enclosure wall of the cylinder body (204) and then extends into the cylinder body (204). A protective sleeve is provided outside the part of the output shaft of the second motor (303) located between the grain silo (1) and the cylinder body (204). A first bevel gear (304) is fixedly installed at the top of the output shaft of the second motor (303) located in the cylinder body (204). A second bevel gear (305) meshing with the first bevel gear (304) is installed at one end of the rotating shaft (301) close to the first bevel gear (304).

6. A silo emptying device for grain silos according to any one of claims 1 to 5, characterized in that, The first conveying assembly (4) includes a shaft-type first spiral blade (401) rotatably installed in the channel (101) and a third motor (402) disposed outside the grain silo (1) for driving the first spiral blade (401) to rotate.

7. A silo emptying device for grain silos according to any one of claims 1 to 5, characterized in that, The butterfly valve assembly (5) includes a valve shaft (501) rotatably installed in the enclosure wall of the grain silo (1) and capable of rotating around the horizontal direction, a butterfly plate (502) fixedly installed 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 hole.

8. The reverse silo device for a grain silo according to claim 7, characterized in that, The control assembly includes a first gear (503) fixedly installed at one end of the valve shaft (501) and a valve handwheel (504) rotatably installed on an L-shaped frame (103). A second gear (505) meshing with the first gear (503) is fixedly installed at one end of the handwheel shaft of the valve handwheel (504) located in the L-shaped frame (103). A rotation stopping member for preventing the first gear (503) from rotating and capable of reciprocally sliding along the axial direction of the valve shaft (501) is provided in the L-shaped frame (103).

9. A silo emptying device for grain silos according to claim 8, characterized in that, The rotation stopping member includes 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 perpendicularly mounted at one end of the rod body away from the cap body. The surface of the stop plate (507) close to the first gear (503) is an arc surface matching the first gear (503), and a tooth portion capable of meshing with the first gear (503) is provided on the arc surface. A first return spring (508) is provided between the cap body and the wall surface of the L-shaped frame (103).

10. A silo emptying device for grain silos according to any one of claims 1 to 5, characterized in that, The second conveying assembly (6) includes a conveying shell (601) and a shafted second spiral blade (602) rotatably mounted in the conveying shell (601). The conveying shell (601) is provided with a fourth motor (603) for driving the second spiral blade (602) to rotate.

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