Discharging device of spiral material receiving bin

Abstract

The utility model relates to the technical field of discharging structures of spiral receiving bins, in particular to a discharging device of a spiral receiving bin. Comprising a supporting bracket, a conveying belt, a spiral receiving bin, a feeding port, a discharging port, a baffle, a chute, a mounting side plate, an adjusting motor, an adjusting shaft, an adjusting gear, a connecting gear, a connecting shaft, a connecting block, a double-sided toothed plate, an adjustable supporting rod, a scraping plate, a sliding assembly, a rotating assembly and a transmission assembly. A spiral receiving bin is arranged on the other side of the supporting support, a feeding port is formed in the upper portion of the spiral receiving bin, a discharging port is formed in the lower portion of the spiral receiving bin, a baffle is arranged in the spiral receiving bin, and when the discharging structure of the spiral receiving bin is used, continuous conveying, angle adjustment and cleaning discharging of filter-press coal are achieved; the problems of coal falling accumulation and unsmooth discharging of the spiral material receiving bin are effectively solved, and the utilization rate and the conveying efficiency of equipment are further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to spiral material receiving bin unloading structure technical field especially relates to a kind of spiral material receiving bin unloading device. BACKGROUND

[0002] Spiral material receiving bin is commonly used for the storage, slurry preservation and conveying of viscous material. In the process of coal processing and treatment, filter-pressed coal, as a kind of coal product treated by filter pressing, is widely used in various industrial fields due to its low moisture content and high density.

[0003] In actual use, when the belt conveyor discharges material into the spiral feed bin, part of the filter-pressed coal is prone to accumulate in the bin body, causing arching, caking and stratification, which leads to difficulty in unloading, affects the smooth discharge of material from the unloading equipment, reduces the utilization rate of the equipment and the difficulty of operation and management, and needs to be improved to prevent coal accumulation and poor unloading.

[0004] Therefore, to solve the problem of coal accumulation and poor unloading, a spiral material receiving bin unloading device can be designed. When the spiral material receiving bin unloading structure is in use, first, the conveying belt starts to operate, and its rotary motion continuously conveys the filter-pressed coal from one end to the top of the spiral material receiving bin. When the filter-pressed coal reaches the end of the conveying belt, it freely falls into the interior of the spiral material receiving bin through the feed port. Inside the spiral material receiving bin, the falling process of the filter-pressed coal is regulated by the baffle. When the regulating motor starts, it drives the regulating gear to rotate through the regulating shaft, and then drives the double-sided tooth plate to reciprocate. The reciprocating motion of the double-sided tooth plate drives the connecting shaft to rotate through the connecting gear, thereby changing the angle of the baffle. By adjusting the angle of the baffle, the falling direction of the filter-pressed coal in the bin can be changed, effectively solving the problem of coal falling off-center or accumulating in the middle of the spiral material receiving bin. At the same time, two groups of adjustable support rods are provided inside the spiral material receiving bin to provide stable support for the baffle. When the filter-pressed coal falls near the bottom of the spiral material receiving bin, the rotation assembly is started to drive the two side transmission assemblies to rotate synchronously, and the two side transmission assemblies drive the two side scraping plates to rotate. The scraping plates function to scrape off the filter-pressed coal attached to the inner wall of the spiral material receiving bin and clean it to the discharge port. This design effectively avoids the problems of uneven discharge and coal accumulation around the material receiving bin caused by the high viscosity of the filter-pressed coal. In summary, the spiral material receiving bin unloading device of the utility model realizes the continuous conveying, angle adjustment and cleaning of the filter-pressed coal through the cooperative work of the main motor, regulating motor and rotation motor, effectively solves the problems of coal accumulation and poor unloading in the spiral material receiving bin, and improves the utilization rate and conveying efficiency of the equipment. SUMMARY

[0005] In order to overcome the spiral material receiving bin discharging device in the process of using, in the belt conveying and discharging to the spiral feed bin, part of the filter cake is easy to accumulate in the bin body, causing arching, caking and stratification, thus causing difficult discharging, affecting the smooth discharge of the material from the discharging equipment, reducing the equipment utilization rate and operation management difficulty, which needs to be improved, and the problem of preventing coal accumulation and poor discharging is inconvenient.

[0006] The utility model discloses a technical scheme for a spiral material receiving bin discharging device, which comprises a supporting bracket, a conveying belt, a spiral material receiving bin, an inlet, an outlet, a baffle, a chute, a mounting side plate, an adjusting motor, an adjusting shaft, an adjusting gear, a connecting gear, a connecting shaft, a connecting block, a double-sided toothed plate, an adjustable supporting rod, a scraping plate, a sliding assembly, a rotating assembly and a transmission assembly. The inside of the supporting bracket is provided with the conveying belt, and the other side of the supporting bracket is provided with the spiral material receiving bin. The top of the spiral material receiving bin is provided with the inlet, and the bottom of the spiral material receiving bin is provided with the outlet. One side of the spiral material receiving bin is provided with the mounting side plate, and the sidewall of the mounting side plate is provided with the adjusting motor. The output end of the adjusting motor is provided with the adjusting shaft, and one end of the adjusting shaft is provided with the adjusting gear. The sidewall of the spiral material receiving bin is provided with the sliding assembly, and the sidewall of the sliding assembly is provided with the double-sided toothed plate. The adjusting gear is engaged with one side of the double-sided toothed plate. The inside of the spiral material receiving bin is provided with the connecting shaft, and one end of the connecting shaft is provided with the connecting gear. The connecting gear is engaged with the other side of the double-sided toothed plate. The inside of the spiral material receiving bin is provided with the baffle, and one side of the baffle is provided with two groups of connecting blocks. The connecting blocks are arranged on the sidewall of the connecting shaft. The sidewall of the baffle is provided with the chute. The inside of the spiral material receiving bin is provided with two groups of adjustable supporting rods. One end of the adjustable supporting rod is fixedly connected with the inner wall of the spiral material receiving bin, and the other end of the adjustable supporting rod is fixedly connected with the bottom wall of the baffle. The sidewall of the outlet is provided with the rotating assembly. Both sides of the inside of the spiral material receiving bin are provided with two groups of transmission assemblies, and the sidewall of the transmission assembly is provided with the scraping plate.

[0007] Preferably, when the screw receiving bin discharging structure is in use, first, the conveying belt starts to operate, and the rotating movement continuously conveys the filter cake from one end to the top of the screw receiving bin, when the filter cake reaches the end of the conveying belt, it freely falls into the interior of the screw receiving bin through the feeding port, and the falling process of the filter cake in the screw receiving bin is regulated by the baffle, when the adjusting motor is started, the adjusting motor drives the adjusting gear to rotate through the adjusting shaft, and then drives the double-sided tooth plate to reciprocate, the reciprocating movement of the double-sided tooth plate drives the connecting shaft to rotate through the connecting gear, so that the angle of the baffle is changed, and by adjusting the angle of the baffle, the falling direction of the filter cake in the bin can be changed, effectively solving the problem of falling coal point deviation or accumulation in the middle of the screw receiving bin, and at the same time, two groups of adjustable supporting rods are arranged in the interior of the screw receiving bin to provide stable support for the baffle, when the filter cake falls to the bottom of the screw receiving bin, the rotating assembly is started to drive the two side transmission assemblies to rotate synchronously, and the two side transmission assemblies drive the two side scraping plates to rotate, the function of the scraping plate is to scrape the filter cake attached to the inner wall of the screw receiving bin and clean it to the discharge port, which effectively avoids the problems of uneven falling and coal accumulation around the receiving bin caused by the high viscosity of the filter cake, and the screw receiving bin discharging device of the utility model realizes the continuous conveying, angle adjustment and cleaning of the filter cake by the coordinated work of the driving motor, the adjusting motor and the rotating motor, which not only effectively solves the problems of coal accumulation and poor discharging of the screw receiving bin, but also improves the utilization rate and conveying efficiency of the equipment.

[0008] Preferably, the sliding assembly comprises a sliding rail, a sliding rod and a sliding block, the sidewall of the screw receiving bin is provided with the sliding rail, the interior of the sliding rail is provided with the sliding rod, and the sidewall of the sliding rod is provided with the sliding block.

[0009] Preferably, the sliding block is in sliding connection with the sliding rod, both ends of the sliding rod are fixedly connected with the inner walls of the two sides of the sliding rail, and the double-sided tooth plate is arranged on the sidewall of the sliding block.

[0010] Preferably, the rotating assembly comprises a mounting bracket, a rotating motor and a rotating shaft, the sidewall of the discharge port is provided with the mounting bracket, the sidewall of the mounting bracket is provided with the rotating motor, and the output end of the rotating motor is provided with the rotating shaft.

[0011] Preferably, the rotating assembly further comprises a transmission belt and a rotating wheel, the sidewall of the rotating shaft is provided with the rotating wheel, the exterior of the rotating wheel is provided with the transmission belt, and the rotating wheel is in rotary connection with the transmission belt.

[0012] Preferably, the transmission assembly comprises a transmission shaft and a transmission wheel, two groups of transmission shafts are arranged on the two sides of the interior of the screw receiving bin, both ends of the transmission shaft are in rotary connection with the inner walls of the two sides of the screw receiving bin, and the sidewall of one end of the transmission shaft is provided with the transmission wheel.

[0013] Preferably, the transmission wheel is arranged inside the transmission belt, and the transmission wheel is rotatably connected with the transmission belt, and the scraping plate is arranged on the side wall of the transmission shaft.

[0014] The utility model discloses beneficial effect:

[0015] When the screw material receiving bin discharging structure is in the process of using, first, the conveying belt starts to run, and the rotary motion continuously conveys the filter cake from one end to the top of the screw material receiving bin, when the filter cake reaches the end of the conveying belt, it is free to fall into the interior of the screw material receiving bin through the feeding port, in the interior of the screw material receiving bin, the falling process of the filter cake is adjusted by the baffle, when the adjusting motor starts, the adjusting motor drives the adjusting gear to rotate through the adjusting shaft, and then drives the double-sided tooth plate to reciprocate, the reciprocation of the double-sided tooth plate drives the connecting shaft to rotate through the connecting gear, so that the angle of the baffle is changed, by adjusting the angle of the baffle, the falling direction of the filter cake in the bin can be changed, effectively solving the problems that the coal falling point deviates or is accumulated in the middle part of the screw material receiving bin, meanwhile, two groups of adjustable supporting rods are arranged in the interior of the screw material receiving bin, and stable support is provided for the baffle, when the filter cake falls to the bottom of the screw material receiving bin, starting the rotating assembly can drive the two side transmission assemblies to rotate synchronously, the two side transmission assemblies can drive the two side scraping plates to rotate, the scraping plate is used for scraping the filter cake adhered to the inner wall of the screw material receiving bin and cleaning the filter cake to the discharge port, this design effectively avoids the problems of uneven material falling and coal accumulation around the material receiving bin caused by the large viscosity of the filter cake, and in summary, the screw material receiving bin discharging device of the utility model realizes the continuous conveying, angle adjustment and cleaning of the filter cake through the cooperative work of the driving motor, the adjusting motor and the rotating motor, not only effectively solves the problems of coal falling and poor discharging of the screw material receiving bin, but also improves the utilization rate and conveying efficiency of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A first three-dimensional structural schematic view of a screw material receiving bin discharging device is shown.

[0017] Figure 2 A first partial three-dimensional structural schematic view of a screw material receiving bin discharging device is shown.

[0018] Figure 3 A second partial three-dimensional structural schematic view of a screw material receiving bin discharging device is shown.

[0019] Figure 4 A third partial three-dimensional structural schematic view of a screw material receiving bin discharging device is shown.

[0020] Figure 5The fourth partial three-dimensional structure schematic view of the spiral material receiving bin unloading device is shown.

[0021] Mark explanation: 1, support support; 2, conveying belt; 3, spiral material receiving bin; 4, feed inlet; 5, discharge port; 6, baffle; 7, chute; 8, installation side plate; 9, adjusting motor; 10, adjusting shaft; 11, adjusting gear; 12, connecting gear; 13, connecting shaft; 14, connecting block; 15, double-sided toothed plate; 16, adjustable support rod; 17, scraping plate; 101, sliding rail; 102, sliding rod; 103, sliding block; 201, mounting bracket; 202, rotating motor; 203, rotating shaft; 204, transmission belt; 205, rotating wheel; 301, transmission shaft; 302, transmission wheel. DETAILED DESCRIPTION

[0022] The utility model is further explained below in combination with the drawings and examples.

[0023] Please refer to Figures 1-5 The utility model provides a kind of embodiment: a spiral material receiving bin unloading device, including support support 1, conveying belt 2, spiral material receiving bin 3, feed inlet 4, discharge port 5, baffle 6, chute 7, installation side plate 8, adjusting motor 9, adjusting shaft 10, adjusting gear 11, connecting gear 12, connecting shaft 13, connecting block 14, double-sided toothed plate 15, adjustable support rod 16, scraping plate 17, sliding assembly, rotating assembly and transmission assembly, the inside of support support 1 is provided with conveying belt 2, the other side of support support 1 is provided with spiral material receiving bin 3, the top of spiral material receiving bin 3 is provided with feed inlet 4, the below of spiral material receiving bin 3 is provided with discharge port 5, the side of spiral material receiving bin 3 is provided with installation side plate 8, the side wall of installation side plate 8 is provided with adjusting motor 9, the output end of adjusting motor 9 is provided with adjusting shaft 10, the one end of adjusting shaft 10 is provided with adjusting gear 11, the side wall of spiral material receiving bin 3 is provided with sliding assembly, the side wall of sliding assembly is provided with double-sided toothed plate 15, adjusting gear 11 is engaged with one side of double-sided toothed plate 15, the inside of spiral material receiving bin 3 is provided with connecting shaft 13, the one end of connecting shaft 13 is provided with connecting gear 12, connecting gear 12 is engaged with the other side of double-sided toothed plate 15, the inside of spiral material receiving bin 3 is provided with baffle 6, the side of baffle 6 is provided with two groups of connecting block 14, connecting block 14 is arranged on the side wall of connecting shaft 13, the side wall of baffle 6 is provided with chute 7, the inside of spiral material receiving bin 3 is provided with two groups of adjustable support rod 16, the one end of adjustable support rod 16 is fixedly connected with the inner wall of spiral material receiving bin 3, the other end of adjustable support rod 16 is fixedly connected with the bottom wall of baffle 6, the side wall of discharge port 5 is provided with rotating assembly, the inside both sides of spiral material receiving bin 3 are provided with two groups of transmission assembly, the side wall of transmission assembly is provided with scraping plate 17.

[0024] Please refer toFigure 2 The sliding assembly comprises a slide rail 101, a slide rod 102 and a slide block 103. The slide rail 101 is arranged on the side wall of the screw receiving bin 3. The slide rail 101 is internally provided with the slide rod 102. The slide rod 102 is internally provided with the slide block 103. The slide block 103 is slidably connected with the slide rod 102. The two ends of the slide rod 102 are fixedly connected with the two side walls of the slide rail 101. The double-sided toothed plate 15 is arranged on the side wall of the slide block 103. When the double-sided toothed plate 15 reciprocates, the slide block 103 can be driven to slide through the slide rod 102. The rotating assembly comprises a mounting bracket 201, a rotating motor 202 and a rotating shaft 203. The mounting bracket 201 is arranged on the side wall of the discharge port 5. The rotating motor 202 is arranged on the side wall of the mounting bracket 201. The output end of the rotating motor 202 is provided with the rotating shaft 203. The rotating motor 202 can drive the rotating shaft 203 to rotate.

[0025] Please refer to Figures 3-5 The rotating assembly further comprises a transmission belt 204 and a rotating wheel 205. The rotating wheel 205 is arranged on the side wall of the rotating shaft 203. The transmission belt 204 is arranged on the outside of the rotating wheel 205. The rotating wheel 205 is rotatably connected with the transmission belt 204. The rotating shaft 203 can drive the transmission belt 204 to rotate through the rotating wheel 205. The transmission assembly comprises a transmission shaft 301 and a transmission wheel 302. Two groups of transmission shafts 301 are arranged on the two sides of the inside of the screw receiving bin 3. The two ends of the transmission shaft 301 are rotatably connected with the two side walls of the inside of the screw receiving bin 3. The transmission wheel 302 is arranged on the side wall of one end of the transmission shaft 301. The transmission belt 204 can drive the two transmission wheels 302 to rotate. The transmission wheel 302 is arranged in the inside of the transmission belt 204. The transmission wheel 302 is rotatably connected with the transmission belt 204. The scraping plate 17 is arranged on the side wall of the transmission shaft 301. The transmission wheel 302 is connected with the transmission shaft 301. Therefore, the rotation of the transmission shaft 301 can drive the scraping plate 17 to rotate. The scraping plate 17 can scrape the filter-pressed coal attached to the inner wall of the screw receiving bin 3.

[0026] When the screw receiving bin 3 is in use, first, the conveying belt 2 starts to rotate. The rotating movement of the conveying belt 2 continuously conveys the filter-pressed coal from one end to the top of the screw receiving bin 3. When the filter-pressed coal reaches the end of the conveying belt 2, it freely falls into the inside of the screw receiving bin 3 through the feeding port 4,

[0027] Inside the screw receiving bin 3, the falling process of the filter-pressed coal is regulated by the baffle 6, when the regulating motor 9 is started, the regulating motor 9 drives the regulating gear 11 to rotate through the regulating shaft 10, and then drives the double-sided toothed plate 15 to reciprocate, the reciprocation of the double-sided toothed plate 15 drives the connecting shaft 13 to rotate through the connecting gear 12, so as to change the angle of the baffle 6, by adjusting the angle of the baffle 6, the falling direction of the filter-pressed coal in the bin can be changed, effectively solving the problems of falling coal deviating or accumulating in the middle of the screw receiving bin 3,

[0028] Meanwhile, two groups of adjustable supporting rods 16 are arranged inside the screw receiving bin 3, to provide stable support for the baffle 6,

[0029] When the filter-pressed coal falls to the bottom of the screw receiving bin 3, the rotating motor 202 is started, the rotating motor 202 drives the rotating wheel 205 to rotate through the rotating shaft 203, the rotating wheel 205 drives the transmission wheels 302 on both sides to rotate through the transmission belt 204, the transmission wheels 302 are connected with the transmission shaft 301, so the rotation of the transmission shaft 301 will drive the scraping plate 17 to rotate, the function of the scraping plate 17 is to scrape the filter-pressed coal adhered to the inner wall of the screw receiving bin 3, and clean it to the discharge port 5, this design effectively avoids the problems of uneven falling and coal accumulation around the receiving bin caused by the large viscosity of the filter-pressed coal,

[0030] In summary, the screw receiving bin 3 discharging device of the utility model realizes the continuous conveying, angle adjustment and cleaning and discharging of the filter-pressed coal through the cooperative work of the driving motor, the regulating motor 9 and the rotating motor 202, not only effectively solves the problems of filter-pressed coal accumulation and poor discharging of the screw receiving bin 3, but also improves the utilization rate and conveying efficiency of the equipment.

[0031] Through the above steps, when the screw receiving bin 3 discharging structure is in use, first, the conveying belt 2 starts to run, and its rotating movement continuously conveys the filter-pressed coal from one end to the top of the screw receiving bin 3, when the filter-pressed coal reaches the end of the conveying belt 2, it freely falls into the inside of the screw receiving bin 3 through the feeding port 4, in the screw receiving bin 3, the falling process of the filter-pressed coal is regulated by the baffle 6, when the regulating motor 9 is started, the regulating motor 9 drives the regulating gear 11 to rotate through the regulating shaft 10, and then drives the double-sided toothed plate 15 to reciprocate, the reciprocation of the double-sided toothed plate 15 drives the connecting shaft 13 to rotate through the connecting gear 12, so that the angle of the baffle 6 is changed, by adjusting the angle of the baffle 6, the falling direction of the filter-pressed coal in the bin can be changed, effectively solving the problems of falling coal point deviation or accumulation in the middle of the screw receiving bin 3, meanwhile, two groups of adjustable supporting rods 16 are arranged in the inside of the screw receiving bin 3, which provide stable support for the baffle 6, when the filter-pressed coal falls to the bottom of the screw receiving bin 3, the rotating assembly is started to drive the two side transmission assemblies to rotate synchronously, the two side transmission assemblies drive the two side scraping plates 17 to rotate, the scraping plates 17 scrape the filter-pressed coal adhered to the inner wall of the screw receiving bin 3 and clean it to the discharge port 5, this design effectively avoids the problems of uneven falling and coal accumulation around the receiving bin caused by the large viscosity of the filter-pressed coal, in summary, the screw receiving bin 3 discharging device of the utility model realizes the continuous conveying, angle adjustment and cleaning and discharging of the filter-pressed coal through the collaborative work of the driving motor, the regulating motor 9 and the rotating motor 202, not only effectively solves the problems of filter-pressed coal accumulation and poor discharging of the screw receiving bin 3, but also improves the utilization rate and conveying efficiency of the equipment.

[0032] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of the person skilled in the art without departing from the purpose of the utility model.

Claims

1. A spiral material receiving bin discharging device comprising a supporting bracket (1), characterized in that: The supporting support (1) is internally provided with the conveying belt (2), the other side of the supporting support (1) is provided with the spiral material receiving bin (3), the upper portion of the spiral material receiving bin (3) is provided with the feeding port (4), the lower portion of the spiral material receiving bin (3) is provided with the discharging port (5), one side of the spiral material receiving bin (3) is provided with the mounting side plate (8), the sidewall of the mounting side plate (8) is provided with the adjusting motor (9), the output end of the adjusting motor (9) is provided with the adjusting shaft (10), one end of the adjusting shaft (10) is provided with the adjusting gear (11), the sidewall of the spiral material receiving bin (3) is provided with the sliding assembly, the sidewall of the sliding assembly is provided with the double-sided toothed plate (15), the adjusting gear (11) is engaged with one side of the double-sided toothed plate (15), the inside of the spiral material receiving bin (3) is provided with the connecting shaft (13), one end of the connecting shaft (13) is provided with the connecting gear (12), the connecting gear (12) is engaged with the other side of the double-sided toothed plate (15), the inside of the spiral material receiving bin (3) is provided with the baffle (6), one side of the baffle (6) is provided with two groups of connecting blocks (14), the connecting blocks (14) are arranged on the sidewall of the connecting shaft (13), the sidewall of the baffle (6) is provided with the chute (7), the inside of the spiral material receiving bin (3) is provided with two groups of adjustable supporting rods (16), one end of the adjustable supporting rod (16) is fixedly connected with the inner wall of the spiral material receiving bin (3), the other end of the adjustable supporting rod (16) is fixedly connected with the bottom wall of the baffle (6), the sidewall of the discharging port (5) is provided with the rotating assembly, both sides of the inside of the spiral material receiving bin (3) are provided with two groups of transmission assemblies, the sidewall of the transmission assembly is provided with the scraping plate (17).

2. A spiral feed bin (3) unloading device according to claim 1, characterized in that: The sliding assembly comprises a sliding rail (101), a sliding rod (102) and a sliding block (103), the sidewall of the spiral material receiving bin (3) is provided with the sliding rail (101), the inside of the sliding rail (101) is provided with the sliding rod (102), and the sidewall of the sliding rod (102) is provided with the sliding block (103).

3. A spiral feed bin (3) unloading device according to claim 2, characterized in that: The sliding block (103) is in sliding connection with the sliding rod (102), both ends of the sliding rod (102) are fixedly connected with the inner walls of both sides of the sliding rail (101), and the double-sided toothed plate (15) is arranged on the sidewall of the sliding block (103).

4. A helical feed bin (3) unloading device according to claim 2, characterized in that: The rotating assembly comprises a mounting bracket (201), a rotating motor (202) and a rotating shaft (203), the sidewall of the discharging port (5) is provided with the mounting bracket (201), the sidewall of the mounting bracket (201) is provided with the rotating motor (202), and the output end of the rotating motor (202) is provided with the rotating shaft (203).

5. A helical feed bin (3) unloading device according to claim 4, characterized in that: The rotating assembly further comprises a transmission belt (204) and a rotating wheel (205), the side wall of the rotating shaft (203) is provided with the rotating wheel (205), the outer part of the rotating wheel (205) is provided with the transmission belt (204), and the rotating wheel (205) is rotationally connected with the transmission belt (204).

6. A spiral feed bin (3) unloading device according to claim 4, characterized in that: The transmission assembly comprises a transmission shaft (301) and a transmission wheel (302), both sides of the interior of the screw receiving bin (3) are provided with two groups of transmission shafts (301), both ends of the transmission shaft (301) are rotationally connected with the two side inner walls of the screw receiving bin (3), and one end of the side wall of the transmission shaft (301) is provided with the transmission wheel (302).

7. A spiral feed bin (3) unloading device according to claim 6, characterized in that: The transmission wheel (302) is arranged in the interior of the transmission belt (204), the transmission wheel (302) is rotationally connected with the transmission belt (204), and the scraping plate (17) is arranged on the side wall of the transmission shaft (301).

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