A grain conveyor with impurity air separation function

Abstract

This application relates to the field of grain conveying technology and discloses a grain conveyor with impurity air separation function. It includes a fixed base, with two support plates symmetrically fixedly mounted on the top of the fixed base. A conveying cylinder is fixedly mounted on the top of the two support plates. A conveying assembly for conveying grain is disposed inside the conveying cylinder, and a filtering assembly for filtering and breaking up clumps of grain is disposed inside the conveying cylinder. A driving assembly for driving the filtering assembly is also disposed on the top of the fixed base, and the conveying assembly and the driving assembly are connected in a transmission connection. This invention uses a gear and an arc-shaped rack to drive the fixed frame and the filter screen to slide together, thereby drying and breaking up grain clumps inside the conveying cylinder due to moisture, exposing impurities in the grain, thus avoiding incomplete impurity removal due to grain clumping and improving the impurity removal rate of the grain.

Description

Technical Field

[0001] This application relates to the field of grain conveying technology, and in particular to a grain conveyor with impurity air separation function. Background Technology

[0002] Grain plays a vital role in modern agricultural production, especially during harvesting, transportation, and storage. Ensuring the purity and quality of grain is a crucial task in agricultural production. As a natural product, grain often contains various impurities after harvest, such as soil, straw, insect pests, stones, and other foreign objects. These impurities not only affect the quality of the grain but can also have adverse effects on subsequent processing, storage, and food production. To improve grain quality and reduce the harm caused by impurities, grain conveyors often need to be equipped with impurity air separation functions to effectively separate impurities during transportation.

[0003] Humidity is a crucial factor in grain storage and transportation. Different grain varieties have varying sensitivities to humidity. When ambient humidity is high, some grains may clump together due to moisture absorption. Clumped grains typically lose their original granular structure, appearing as clumps or sticky masses. This clumping severely affects grain flowability and transport efficiency, and can also significantly impact the impurity air separation process. When grains and impurities are stuck together, the airflow cannot effectively separate these adhered substances. Clumped grains may damage equipment, and impurities may be trapped within the grain itself, preventing the air separation system from accurately sorting the clumped grains and making it difficult to completely remove impurities. This not only reduces air separation efficiency but also results in incomplete impurity separation. Summary of the Invention

[0004] This application proposes a grain conveyor with impurity air separation function, which has the advantage of drying and breaking up grain that has become damp and clumped together during the grain conveying process, so as to fully expose the impurities in the grain, thereby solving the problems of incomplete impurity removal and low sorting efficiency caused by grain clumping due to dampness during grain conveying.

[0005] To achieve the above objectives, this application adopts the following technical solution: a grain conveyor with impurity air separation function, including a fixed base, two support plates symmetrically fixedly installed on the top of the fixed base, a conveying cylinder fixedly installed on the top of the two support plates, a conveying component for conveying grain is provided inside the conveying cylinder, a filtering component for filtering and breaking up clumped grain is provided inside the conveying cylinder, a driving component for driving the filtering component is also provided on the top of the fixed base, and the conveying component is connected to the driving component in a transmission connection, and an air separation component for air separation of impurities in the grain is also provided on one side of the conveying component;

[0006] The filtration assembly includes a main filter screen fixedly installed on the inner wall of the conveying cylinder, a pressure sensor being installed inside the main filter screen, and a secondary filter screen being slidably installed on the inner side wall of the conveying cylinder. The secondary filter screen is located on the side of the main filter screen closer to the air separation assembly, and the main filter screen and the secondary filter screen are in close contact. An electric heating wire is installed inside the secondary filter screen, and a fixing frame is fixedly connected to the outer side of the secondary filter screen. A first magnetic block is fixedly installed inside the fixing frame.

[0007] Furthermore, the drive assembly includes a vertical plate fixedly installed on the top of the fixed base, and the vertical plate is placed between two support plates. A rotating shaft is rotatably installed on both the support plates and the vertical plate. The conveying assembly is connected to the rotating shaft in a transmission manner. A missing gear is fixedly installed on the outer side of the rotating shaft. An arc-shaped rack that meshes with or separates from the missing gear is rotatably installed on the outer wall of the conveying cylinder. A second magnetic block that is magnetically attracted to the first magnetic block is fixedly installed inside the arc-shaped rack.

[0008] Furthermore, a connecting rod is fixedly installed on the side of the arc-shaped rack near the vertical plate, and a reset groove is opened on the side of the vertical plate near the arc-shaped rack to be slidably connected to the connecting rod. A spring is fixedly installed on the inner wall of the reset groove, and the end of the spring near the rotating shaft is fixedly connected to the connecting rod.

[0009] Furthermore, the conveying assembly includes a conveying shaft rotatably installed inside the conveying cylinder. The conveying shaft movably passes through the main filter screen and the secondary filter screen. Two helical blades are fixedly installed on the outer side of the conveying shaft, and the main filter screen and the secondary filter screen are placed between the two helical blades. A support plate is fixedly installed on the outer side of the end of the conveying cylinder away from the secondary filter screen. A motor is fixedly installed on the side wall of the support plate. The end of the conveying shaft near the motor movably passes through the side wall of the fixed base and is fixedly connected to the output end of the motor.

[0010] Furthermore, the end of the conveying cylinder closest to the motor is fixedly connected to a feeding channel, and the end of the conveying cylinder furthest from the motor is fixedly connected to a discharging channel, with an intercepting net fixedly installed at the bottom of the discharging channel.

[0011] Furthermore, the air separation assembly includes a connecting plate fixedly installed on the outside of one of the support plates away from the motor. A connecting shaft is rotatably installed on the side of the connecting plate near the conveying cylinder. A worm gear is fixedly installed on the outside of the connecting shaft. The conveying shaft is connected to the rotating shaft. A worm gear that meshes with the worm gear is fixedly installed on the outside of the end of the rotating shaft near the connecting plate. A fan blade is fixedly installed on the end of the connecting shaft near the conveying cylinder.

[0012] Furthermore, a limiting groove is provided on the outer side of the fixed frame, and a limiting slide rod that is slidably connected to the limiting groove is fixedly installed on the inner side wall of the conveying cylinder.

[0013] Furthermore, a stabilizing groove is provided on the side of the arc-shaped rack near the conveying cylinder, and a stabilizing slide rod that is slidably connected to the stabilizing groove is fixedly installed on the outer wall of the conveying cylinder.

[0014] The beneficial effects of this invention are as follows:

[0015] This application provides a grain conveyor with impurity air separation function. Through a gear and an arc-shaped rack, the fixed frame and the secondary filter slide together, thereby drying and breaking up the grain that has clumped due to moisture inside the conveying cylinder and was intercepted by the main and secondary filters. This effectively breaks up the adhesion between grain particles, exposing and separating impurities from the grain. This avoids incomplete impurity removal due to grain clumping, making the grain processing more efficient and better meeting quality control requirements. It ensures smooth operation of subsequent processing and storage, significantly improves the purity and quality of the grain, and reduces potential food safety hazards caused by impurity residue. This achieves the effect of improving air separation efficiency and impurity removal rate. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the present invention;

[0019] Figure 3 This is a schematic diagram of the main cross-sectional structure of the feeding channel, conveying cylinder and discharging channel of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the main filter, the secondary filter, and the fixing frame of the present invention;

[0021] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0022] Figure 6 This is a schematic diagram of the structure of the driving component of the present invention.

[0023] In the diagram: 1. Fixed base; 11. Support plate; 2. Conveying cylinder; 3. Conveying assembly; 31. Conveying shaft; 32. Spiral blade; 33. Support plate; 34. Motor; 35. Feeding channel; 36. Discharge channel; 37. Interception net; 4. Filtering assembly; 41. Main filter screen; 42. Secondary filter screen; 43. Fixed frame; 44. Limiting slide groove; 45. Limiting slide rod; 5. Drive assembly; 51. Vertical plate; 52. Rotating shaft; 53. Gear; 54. Arc rack; 55. Connecting rod; 56. Reset slide groove; 57. Spring; 58. Stabilizing slide groove; 59. Stabilizing slide rod; 6. Air separator assembly; 61. Connecting plate; 62. Worm gear; 63. Worm; 64. Fan blade. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1 to 6 A grain conveyor with impurity air separation function includes a fixed base 1. Two support plates 11 are symmetrically fixedly installed on the top of the fixed base 1. A conveying cylinder 2 is fixedly installed on the top of the two support plates 11. A conveying assembly 3 for conveying grain is provided inside the conveying cylinder 2. A filtering assembly 4 for filtering and breaking up clumps of grain is provided inside the conveying cylinder 2. A driving assembly 5 for driving the filtering assembly 4 is also provided on the top of the fixed base 1. The conveying assembly 3 is connected to the driving assembly 5. An air separation assembly 6 for air separation of impurities in the grain is also provided on one side of the conveying assembly 3. During the process of conveying grain by the conveying assembly 3, the driving assembly 5 drives the filtering assembly 4 to break up the grain that has clumped due to moisture. Then, the air separation assembly 6 performs impurity air separation on the broken grain to remove impurities from the grain.

[0026] See Figures 3 to 5The filter assembly 4 includes a main filter screen 41 fixedly installed on the inner wall of the conveying cylinder 2. A pressure sensor is installed inside the main filter screen 41. A secondary filter screen 42 is slidably installed on the inner wall of the conveying cylinder 2. The secondary filter screen 42 is positioned on the side of the main filter screen 41 closest to the air separator 6, and the main filter screen 41 and the secondary filter screen 42 are in close contact. An electric heating wire is installed inside the secondary filter screen 42. A fixing frame 43 is fixedly connected to the outer side of the secondary filter screen 42. A first magnetic block is fixedly installed inside the fixing frame 43. A limiting groove 44 is formed on the outer side of the fixing frame 43. A limiting slide rod 45, which is slidably connected to the limiting groove 44, is fixedly installed on the inner wall of the conveying cylinder 2. Under the action of the drive assembly 5, the fixing frame 43 can drive the secondary filter screen 42 to slide back and forth on the inner wall of the conveying cylinder 2. When there is no clumping in the grain, the dispersed grain can smoothly pass through the main filter screen 41 and the secondary filter screen 42. The grain will not be blocked by the main filter 41. If there are clumps in the grain, they will be blocked by the main filter 41. The pressure sensor inside the main filter 41 converts the physical pressure into an electrical signal, which is then transmitted to the controller. The controller converts it into a control signal and sends it to the actuator, which then turns on the heating wire inside the filter 42. The heating wire inside the filter 42 heats up the grain to dry the clumps. At the same time, when a part of the clumps passes through the main filter 41, it will be immediately broken up by the filter 42, which is attached to the main filter 41 and moves back and forth until the clumps are completely broken up. The pressure sensor inside the main filter 41 then returns to its normal pressure value. By heating and breaking up the clumps in the grain through the filter 42, the impurities in the grain can be exposed, thus avoiding the situation where impurities are not completely removed due to grain clumping, and improving the impurity removal rate in the grain.

[0027] See Figure 1 and Figure 6The drive assembly 5 includes a vertical plate 51 fixedly mounted on the top of the fixed base 1, and the vertical plate 51 is placed between two support plates 11. A rotating shaft 52 is rotatably mounted on both the support plates 11 and the vertical plate 51. The conveying assembly 3 is connected to the rotating shaft 52 in a transmission manner. A missing gear 53 is fixedly mounted on the outer side of the rotating shaft 52. An arc-shaped rack 54 that meshes with or separates from the missing gear 53 is rotatably mounted on the outer wall of the conveying cylinder 2. A second magnetic block that is magnetically attracted to the first magnetic block is fixedly mounted inside the arc-shaped rack 54. The arc-shaped rack 54 is close to the conveying cylinder 2. A stabilizing groove 58 is provided on one side of the conveying cylinder 2. A stabilizing slide rod 59, which is slidably connected to the stabilizing groove 58, is fixedly installed on the outer wall of the conveying cylinder 2. A connecting rod 55 is fixedly installed on the side of the arc-shaped rack 54 near the vertical plate 51. A reset groove 56, which is slidably connected to the connecting rod 55, is provided on the side of the vertical plate 51 near the arc-shaped rack 54. A spring 57 is fixedly installed on the inner wall of the reset groove 56. The end of the spring 57 near the rotating shaft 52 is fixedly connected to the connecting rod 55. Under the action of the conveying assembly 3, the rotating shaft... Rotation 52 drives the missing gear 53 to rotate. When the missing gear 53 rotates, it meshes with the arc-shaped rack 54, causing the arc-shaped rack 54 to rotate on the outside of the conveying cylinder 2. Simultaneously, relative sliding occurs between the stabilizing groove 58 and the stabilizing rod 59. The stabilizing groove 58 and the stabilizing rod 59 prevent the arc-shaped rack 54 from shifting when sliding on the outside of the conveying cylinder 2. Because the second magnetic block inside the arc-shaped rack 54 is magnetically attracted to the first magnetic block inside the fixed frame 43, the arc-shaped rack 54 slides... The filter screen 42 and the fixed frame 43 slide synchronously. When the arc-shaped rack 54 slides downward, the arc-shaped rack 54 drives the connecting rod 55 to compress the spring 57 inside the reset groove 56. Therefore, when the missing gear 53 separates from the arc-shaped rack 54, under the action of the spring 57, the connecting rod 55 drives the arc-shaped rack 54 to reset, thereby causing the arc-shaped rack 54 to slide back and forth on the outside of the conveying cylinder 2. Finally, the filter screen 42 and the fixed frame 43 slide back and forth to break up the clumps of grain inside the conveying cylinder 2.

[0028] See Figure 3The conveying assembly 3 includes a conveying shaft 31 rotatably mounted inside the conveying cylinder 2. A feed channel 35 is fixedly connected to the end of the conveying cylinder 2 closest to the motor 34, and a discharge channel 36 is fixedly connected to the end of the conveying cylinder 2 furthest from the motor 34. A screen 37 is fixedly installed at the bottom of the discharge channel 36. The conveying shaft 31 movably passes through a main filter screen 41 and a secondary filter screen 42. Two spiral blades 32 are fixedly installed on the outer side of the conveying shaft 31, with the main filter screen 41 and the secondary filter screen 42 positioned between the two spiral blades 32. A support plate 33 is fixedly installed on the outer side of the end of the conveying cylinder 2 furthest from the secondary filter screen 42. A motor 34 is fixedly installed on the side wall of the support plate 33. The end of the conveying shaft 31 closest to the motor 34 movably passes through the main filter screen 35. The side wall of the fixed seat 1 is fixedly connected to the output end of the motor 34. When conveying grain, the grain enters the conveying cylinder 2 through the feeding channel 35. The output end of the motor 34 drives the conveying shaft 31 and the spiral blade 32 to rotate, thereby conveying the grain towards the discharge channel 36. The grain conveyed by the spiral blade 32 will pass through the main filter screen 41 and the secondary filter screen 42. Since the conveying shaft 31 moves through the main filter screen 41 and the secondary filter screen 42, its rotation will not affect the operation of the main filter screen 41 and the secondary filter screen 42. The air separation component 6 then performs air separation on the grain falling through the discharge channel 36. During air separation, the intercepting net 37 intercepts the grain in the intercepting net 37, while impurities fly out through the mesh on the intercepting net 37.

[0029] See Figure 2 The air separation component 6 includes a connecting plate 61 fixedly installed on the outside of one of the support plates 11 away from the motor 34. A connecting shaft is rotatably installed on the side of the connecting plate 61 near the conveying cylinder 2. A worm gear 62 is fixedly installed on the outside of the connecting shaft. The conveying shaft 31 is connected to the rotating shaft 52. A worm 63 that meshes with the worm gear 62 is fixedly installed on the outside of the end of the rotating shaft 52 near the connecting plate 61. A fan blade 64 is fixedly installed on the end of the connecting shaft near the conveying cylinder 2. When the conveying shaft 31 rotates, the conveying shaft 31 drives the rotating shaft 52 and the worm 63 to rotate through the transmission connection. The worm 63 then drives the worm gear 62 to rotate through the meshing transmission, thereby causing the connecting shaft and the fan blade 64 to rotate together. When the fan blade 64 rotates, it performs impurity air separation on the grain falling through the interception net 37, blowing out the impurities in the grain.

[0030] Working principle:

[0031] 1. When conveying grain, the grain enters the conveying cylinder 2 through the feeding channel 35. The output end of the motor 34 drives the conveying shaft 31 and the spiral blade 32 to rotate, thereby conveying the grain towards the discharge channel 36. The grain conveyed by the spiral blade 32 will pass through the main filter screen 41 and the secondary filter screen 42. Since the conveying shaft 31 moves through the main filter screen 41 and the secondary filter screen 42, its rotation will not affect the operation of the main filter screen 41 and the secondary filter screen 42. At the same time, the rotating conveying shaft 31 drives the rotating shaft 52 and the worm gear 63 to rotate through the transmission connection. The worm gear 63 then drives the worm wheel 62 to rotate through the meshing transmission, thereby making the connecting shaft and the fan blade 64 rotate together. When the fan blade 64 rotates, it performs impurity wind separation treatment on the grain falling through the interception net 37, blowing out the impurities in the grain. The interception net 37 intercepts the grain inside the interception net 37, and the impurities will fly out through the mesh on the interception net 37.

[0032] 2. During conveying, when there are no lumps in the grain, the dispersed grain can pass smoothly through the main filter 41 and the secondary filter 42 without being intercepted by the main filter 41. If there are lumps in the grain, they will be intercepted by the main filter 41. The pressure sensor inside the main filter 41 converts the physical pressure into an electrical signal, which is then transmitted to the controller. The controller converts this into a control signal and sends it to the actuator, which then turns on the heating wire inside the secondary filter 42. The heating wire inside the secondary filter 42 heats up and dries the lumped grain. At the same time, the rotating conveyor shaft 31 drives the rotating shaft 52 and the missing gear 53 to rotate through the transmission connection. When the missing gear 53 rotates, it drives the arc-shaped rack 54 to rotate outside the conveyor cylinder 2 through the meshing transmission between the rack and the arc-shaped rack 54. Since the second magnetic block inside the arc-shaped rack 54 is magnetically attracted to the first magnetic block inside the fixed frame 43, the arc-shaped rack 54 slides, causing the secondary filter 42 and the fixed frame 43 to slide synchronously. When the arc-shaped rack 54 slides downward, the arc... The rack 54 drives the connecting rod 55 to compress the spring 57 inside the reset groove 56. Therefore, when the missing gear 53 separates from the arc rack 54, under the action of the spring 57, the connecting rod 55 drives the arc rack 54 to reset, which in turn causes the arc rack 54 to slide back and forth on the outside of the conveying cylinder 2. Finally, the filter screen 42 slides back and forth with the fixed frame 43. When a part of the clumped grain passes through the main filter screen 41, it will be immediately broken up by the filter screen 42, which is attached to the main filter screen 41 and moves back and forth, until the clumped grain is completely broken up. The pressure sensor inside the main filter screen 41 returns to the normal pressure value. By heating and breaking up the clumped grain through the filter screen 42, the adhesion between grain particles can be effectively broken up, so that the impurities in the grain can be exposed and separated from the grain. This avoids the situation where impurities are not completely removed due to grain clumping, improves the impurity removal rate in the grain, and can also significantly improve the purity and quality of the grain, reducing the food safety hazards that may be caused by impurity residue.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A grain conveyor with impurity air separation function, characterized in that, The device includes a fixed base (1), on which two support plates (11) are symmetrically fixedly installed. A conveying cylinder (2) is fixedly installed on the top of the two support plates (11). A conveying assembly (3) for conveying grain is provided inside the conveying cylinder (2). A filtering assembly (4) for filtering and breaking up clumps of grain is provided inside the conveying cylinder (2). A driving assembly (5) for driving the filtering assembly (4) is also provided on the top of the fixed base (1). The conveying assembly (3) is connected to the driving assembly (5) in a transmission. A wind separation assembly (6) for wind separation of impurities in grain is also provided on one side of the conveying assembly (3). The filter assembly (4) includes a main filter screen (41) fixedly installed on the inner wall of the conveying cylinder (2). A pressure sensor is provided inside the main filter screen (41). A secondary filter screen (42) is also slidably installed on the inner side wall of the conveying cylinder (2). The secondary filter screen (42) is placed on the side of the main filter screen (41) close to the air separator assembly (6), and the main filter screen (41) and the secondary filter screen (42) are in contact. An electric heating wire is provided inside the secondary filter screen (42). A fixing frame (43) is fixedly connected to the outer side of the secondary filter screen (42). A first magnetic block is fixedly installed inside the fixing frame (43). The drive assembly (5) includes a vertical plate (51) fixedly installed on the top of the fixed base (1), and the vertical plate (51) is placed between two support plates (11). A rotating shaft (52) is rotatably installed on both the support plate (11) and the vertical plate (51). The conveying assembly (3) is connected to the rotating shaft (52) in a transmission. A missing gear (53) is fixedly installed on the outside of the rotating shaft (52). An arc-shaped rack (54) that meshes with or separates from the missing gear (53) is rotatably installed on the outer wall of the conveying cylinder (2). A second magnetic block that is magnetically attracted to the first magnetic block is fixedly installed inside the arc-shaped rack (54). A connecting rod (55) is fixedly installed on the side of the arc-shaped rack (54) near the vertical plate (51). A reset groove (56) that is limited and slidably connected to the connecting rod (55) is opened on the side of the vertical plate (51) near the arc-shaped rack (54). A spring (57) is fixedly installed on the inner wall of the reset groove (56). One end of the spring (57) near the rotating shaft (52) is fixedly connected to the connecting rod (55).

2. A grain conveyor with impurity air separation function according to claim 1, characterized in that, The conveying assembly (3) includes a conveying shaft (31) rotatably installed inside the conveying cylinder (2). The conveying shaft (31) movably passes through the main filter screen (41) and the secondary filter screen (42). Two spiral blades (32) are fixedly installed on the outer side of the conveying shaft (31), and the main filter screen (41) and the secondary filter screen (42) are placed between the two spiral blades (32). A support plate (33) is fixedly installed on the outer side of the end of the conveying cylinder (2) away from the secondary filter screen (42). A motor (34) is fixedly installed on the side wall of the support plate (33). The end of the conveying shaft (31) near the motor (34) movably passes through the side wall of the fixed seat (1) and is fixedly connected to the output end of the motor (34).

3. A grain conveyor with impurity air separation function according to claim 2, characterized in that, The end of the conveying cylinder (2) near the motor (34) is fixedly connected to the feeding channel (35), and the end of the conveying cylinder (2) away from the motor (34) is fixedly connected to the discharge channel (36). An intercepting net (37) is fixedly installed at the bottom of the discharge channel (36).

4. A grain conveyor with impurity air separation function according to claim 3, characterized in that, The air separation assembly (6) includes a connecting plate (61) fixedly installed on the outside of a support plate (11) away from the motor (34). A connecting shaft is rotatably installed on the side of the connecting plate (61) near the conveying cylinder (2). A worm gear (62) is fixedly installed on the outside of the connecting shaft. The conveying shaft (31) is connected to the rotating shaft (52). A worm (63) that meshes with the worm gear (62) is fixedly installed on the outside of the end of the rotating shaft (52) near the connecting plate (61). A fan blade (64) is fixedly installed on the end of the connecting shaft near the conveying cylinder (2).

5. A grain conveyor with impurity air separation function according to claim 1, characterized in that, A limiting groove (44) is provided on the outer side of the fixed frame (43), and a limiting slide rod (45) is fixedly installed on the inner side wall of the conveying cylinder (2) and is limited and slidably connected to the limiting groove (44).

6. A grain conveyor with impurity air separation function according to claim 1, characterized in that, The arc-shaped rack (54) has a stabilizing groove (58) on the side near the conveying cylinder (2), and a stabilizing rod (59) that is slidably connected to the stabilizing groove (58) is fixedly installed on the outer wall of the conveying cylinder (2).

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