Pellet conveying device for shaft furnace sintering

Abstract

The pellet conveying device for shaft furnace sintering comprises a material distribution mechanism for distributing materials to a feeding port of a shaft furnace, the material distribution mechanism is driven by a power assembly to do reciprocating motion above the feeding port, a material homogenizer is arranged on an auxiliary roller at the pellet output position of the material distribution mechanism, and the material homogenizer is driven by an intermittent deflection assembly; the homogenizer comprises a first supporting plate and a second supporting plate which are symmetrically located at the two ends of the auxiliary roller. A first baffle is arranged between the two first supporting plates, a second baffle is arranged between the two second supporting plates, and a channel for pellets to pass through is arranged between the first baffle and the conveying chain plate driven by the auxiliary roller and between the second baffle and the conveying chain plate driven by the auxiliary roller. The problem that in the prior art, a pellet distributing device cannot well distribute materials on the edge of a shaft furnace body, and then the pellet preparation effect is affected is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pellet processing, in particular to a pellet conveying device for shaft furnace sintering. BACKGROUND

[0002] As a key link in the steel industry chain, the quality of pellet production directly affects the efficiency and cost of the subsequent ironmaking process. A typical pellet production process includes pretreatment of iron-containing raw materials, mixing of ingredients, balling and forming, and finally, qualified pellets are formed by means of shaft furnace body roasting and sintering. As a core process before shaft furnace body roasting, the distribution of the material directly determines the initial distribution state of the pellets in the shaft furnace body, and plays a decisive role in the subsequent roasting effect.

[0003] In the shaft furnace body pellet production, uniformity of distribution is a key prerequisite for ensuring the quality of roasting and sintering. Only when the pellets are uniformly distributed in the shaft furnace body can the stability of the temperature field and the airflow field in the furnace be ensured, so that each pellet can fully contact heat and reaction gas. In this way, not only can the core indicators such as the strength and reducibility of the pellet be improved, reducing unqualified products such as green balls and over-fired balls, but also the energy utilization efficiency can be optimized, reducing energy consumption costs such as coal gas and electricity, while avoiding equipment wear and tear caused by excessive local load, ensuring continuous and stable production.

[0004] Currently, the commonly used pellet distributors in the industry mainly include reciprocating distributors. The reciprocating distributor relies on the reciprocating movement of the distribution trolley to achieve distribution. The existing distributors are based on the principle of mechanical movement to disperse and distribute the pellets. However, in actual application, due to the limitations of structural design and movement mode, there are generally distribution problems in the edge area of the shaft furnace body. Specifically, the distribution density of the pellets at the edge of the shaft furnace body is much lower than that in the center of the furnace body, forming a clear edge sparsity phenomenon. From the principle, due to the limitation of the movement trajectory of the trolley, there is a movement dead angle in the edge area close to the furnace wall, resulting in the pellets being unable to be effectively covered. Moreover, when dealing with the edge radius of the circular cross-section of the shaft furnace body, both types of distributors cannot accurately control the landing point and distribution density of the pellets, further exacerbating the problem of uneven edge distribution.

[0005] The problem of difficult edge distribution directly negatively affects the roasting and sintering effect of the pellets. On the one hand, the sparse distribution of the pellets in the edge area makes the heat near the furnace wall unable to be fully absorbed, forming a local high-temperature zone; while the dense distribution of the pellets in the center area may cause insufficient sintering due to insufficient heat, resulting in disorderly temperature distribution in the furnace, ultimately leading to unstable pellet quality and frequent uneven distribution of green and cooked products, significantly increasing the rate of unqualified products. On the other hand, in order to improve the local sintering effect, enterprises often need to adjust the roasting temperature or extend the roasting time, which not only reduces the unit time capacity of the shaft furnace body, but also increases energy consumption. SUMMARY

[0006] The purpose of this invention is to solve the problem in the prior art that the pellet feeder cannot properly feed pellets at the edge of the vertical furnace body, thus affecting the pellet preparation effect, and to provide a pellet conveying device for vertical furnace sintering.

[0007] To address the shortcomings of the aforementioned technical problems, the present invention adopts the following technical solution: a pellet conveying device for vertical shaft furnace sintering, comprising a feeding mechanism for feeding material into the feed inlet of the vertical shaft furnace, wherein the feeding mechanism is driven by a power component to reciprocate above the feed inlet, and an equalizer is provided on the auxiliary roller at the output position of the pellets of the feeding mechanism, the equalizer being driven by an intermittent deflection component. The feed equalizer includes a first support plate and a second support plate symmetrically located at both ends of the auxiliary roller; a first baffle is provided between the two first support plates, a second baffle is provided between the two second support plates, and a channel for the pellets to pass through is provided between the first baffle and the second baffle and the conveyor chain plate driven by the auxiliary roller. The intermittent deflection assembly includes limiting rails on both sides of the feed inlet of the vertical furnace. Each limiting rail is equipped with a drive wheel that cooperates with it. The drive wheel is rotatably mounted at both ends of the auxiliary roller. A first support plate and a second support plate located on the same side of the auxiliary roller are fixed on the drive wheel on that side. Each drive wheel is provided with a sliding section and a toothed section. The two ends of the limiting rail are respectively provided with a first drive tooth and a second drive tooth. When the tooth segment of the drive wheel meshes with the first drive tooth, the first baffle deflects to the path of the cloth feeding mechanism discharging the pellets; when the tooth segment meshes with the second drive tooth, the second baffle deflects to the path of the cloth feeding mechanism discharging the pellets. When the sliding section of the drive wheel slides on the limiting rail, the first baffle and the second baffle move away from the path of the cloth feeding mechanism to discharge the pellets.

[0008] As a further optimization of the pellet conveying device for vertical furnace sintering of the present invention: the feeding mechanism includes a movable frame, which is driven by a power component to reciprocate above the feed inlet. The end of the conveying chain plate away from the auxiliary roller is connected to a drive roller, which is driven by a drive motor mounted on the movable frame. The auxiliary roller and the drive roller are rotatably connected to the movable frame.

[0009] As a further optimization of the pellet conveying device for vertical furnace sintering of the present invention: the power component includes a power roller rotatably mounted on a support and a power motor fixedly mounted on the support, the power motor driving the power roller to rotate; a spiral drive guide groove is opened on the outer periphery of the power roller, and a drive block is fixedly mounted on the moving frame, the drive block being slidably connected in the drive guide groove.

[0010] As a further optimization of the pellet conveying device for vertical furnace sintering of the present invention: the bottom of the moving frame is provided with a limiting frame and a guide wheel, and the limiting frame and the guide wheel are slidably connected to the bearing rail located above the feed inlet.

[0011] As a further optimization of the pellet conveying device for vertical furnace sintering of the present invention: the cross-section of the bearing rail is I-shaped, and the lower edge of the bearing rail can be fixedly connected to the bottom inner wall above the feed port by expansion bolts.

[0012] As a further optimization of the pellet conveying device for vertical furnace sintering of the present invention: the first support plate and the second support plate on the same side are both fixedly connected to the transmission sleeve, the drive wheel is fixedly located on the outer periphery of the transmission sleeve, and the end of the auxiliary roller is rotatably connected to the transmission sleeve.

[0013] As a further optimization of the pellet conveying device for vertical furnace sintering of the present invention: a bearing is provided between the auxiliary roller and the transmission sleeve, and another bearing is provided between the transmission sleeve and the moving frame.

[0014] As a further optimization of the pellet conveying device for vertical furnace sintering of the present invention: a wear-resistant layer is provided at the edge of the second baffle, and the surface of the wear-resistant layer is provided with protrusions.

[0015] As a further optimization of the pellet conveying device for vertical furnace sintering of the present invention: the limiting rail is connected to the inner wall above the feed port by screws.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention, by setting a sliding section and a toothed section of the drive wheel, engages with the limiting rail and drive teeth above the feed inlet 6 of the vertical furnace body to drive the rotation of the transmission sleeve mounted on the support. This causes the first support plate, second support plate, first baffle, and second baffle, connected to the transmission sleeve, to engage with the drive teeth at the A and B edges above the feed inlet. This, through the meshing of the toothed section of the drive wheel with the drive teeth, drives the first or second baffle to form a guide surface, providing guidance for the edge sliding of the pellets and thus compensating for the sparse edge distribution of conventional pellets. The intermediate area between A and B above the feed inlet employs an unobstructed trajectory design, allowing the pellets to be densely dispersed under the influence of gravity and inertia. Ultimately, this achieves a balanced match between the amount of pellets at the edge above the feed inlet and in the intermediate area, effectively improving the uniformity and consistency of pellet distribution. This lays the foundation for uniform heat transfer during subsequent sintering and improves the quality of the sintered product. Attached Figure Description

[0017] Figure 1 This is a top view of the structure of the present invention in use; Figure 2 This is a top view cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the axial structure of the present invention; Figure 4 This is a schematic diagram of the axonal structure of the power assembly of the present invention; Figure 5This is a schematic cross-sectional view of the fabric side at point A of the present invention. Figure 6 This is a side view of the fabric state at point A of the present invention. Figure 7 This is a schematic cross-sectional view of the fabric state between A and B in this invention. Figure 8 This is a side view of the fabric arrangement between A and B in this invention. Figure 9 This is a schematic cross-sectional view of the fabric side at point B of the present invention. Figure 10 This is a side view of the fabric state at point B of the present invention. The diagram shows the following markings: 1. Fabric feeding mechanism; 101. Moving frame; 102. Drive roller; 103. Conveyor chain plate; 104. Auxiliary roller; 105. Limiting frame; 106. Guide wheel; 107. Bearing rail; 108. Drive motor; 2. Power assembly; 201. Power motor; 202. Power roller; 203. Drive guide groove; 204. Drive block; 205. Support; 3. Feeding structure; 4. Feeder; 401. First baffle; 402. First support plate; 403. Second support plate; 404. Second baffle; 5. Intermittent deflection assembly; 501. Drive wheel; 502. Sliding section; 503. Toothed section; 504. Limiting rail; 505. First drive tooth; 506. Second drive tooth; 6. Feed inlet; 7. Transmission sleeve. Detailed Implementation

[0018] To better understand the present invention, the following embodiments further illustrate the content of the present invention, but the content of the present invention is not limited to the following embodiments.

[0019] like Figure 1 As shown, a pellet conveying device for vertical shaft furnace sintering includes a feeding mechanism 1 driven by a power component 2 to reciprocate above the feed inlet 6 of the vertical shaft furnace body. A feeding structure 3 is provided above the feeding mechanism 1 to convey pellets onto the feeding mechanism 1. Through the cyclic movement and pellet conveying function of the feeding mechanism 1, the pellets conveyed by the feeding mechanism 1 are evenly distributed between A and B above the feed inlet 6.

[0020] like Figures 5-10As shown, a feed equalizer 4 is provided on the auxiliary roller 104 at the discharge end of the feeding mechanism 1, and the feed equalizer 4 is driven by an intermittent deflection assembly 5. The feed equalizer 4 includes two first support plates 402 and second support plates 403 respectively rotatably disposed at both ends of the auxiliary roller 104. The first support plates 402 and second support plates 403 form a V-shaped plate, and the included angle between the first support plates 402 and second support plates 403 is 110-120°. A first baffle 401 is provided between the two first support plates 402, and a second baffle 404 is provided between the two second support plates 403. A gap is provided between the first baffle 401 and the second baffle 404 and the auxiliary roller 104 for the feeding ball to pass through, so that the feeding mechanism 1 can stably convey and discharge the feeding ball to the feed inlet 6 for feeding. The first support plate 402 and the second support plate 403 on the same side are fixedly connected to the transmission sleeve 7 at their opposite ends. The transmission sleeve 7 is rotatably connected to the end of the auxiliary roller 104, and the transmission sleeve 7 is fixedly connected to the drive wheel 501 of the intermittent deflection assembly 5. The drive wheel 501 is provided with alternating toothed sections 503 and sliding sections 502. The sliding section 502 can slide and cooperate with the limiting rail 504 provided on the inner wall above the feed port 6. The toothed section 503 can mesh with the first drive tooth 505 and the second drive tooth 506 provided at the two edges of the limiting rail 504, so that after the first baffle 401 or the second baffle 404 is deflected, it is on the path of the ball discharge of the fabric mechanism 1. That is, when the fabric mechanism 1 moves to A or B above the feed port 6, it can guide more of the balls into the edge of A or B above the feed port 6, thereby improving the uniformity of the fabric distribution of the fabric mechanism 1 at A or B above the feed port 6. The sliding section 502 can slide and engage with the surface of the limiting rail 504, thereby driving the two first support plates 402 and the second support plate 403 to flip and reset the first baffle 401 and the second baffle 404 to their initial positions. Even if the first baffle 401 and the second baffle 404 are not on the path of the pellets discharged by the feeding mechanism 1, the pellets are evenly distributed in the area between A and B above the feed port 6.

[0021] like Figure 2 and Figure 3As shown, the limiting rail 504 is fixed to the inner wall above the feed inlet 6 by screws. The tightening force of the screws forms a firm connection between the limiting rail 504 and the inner wall above the feed inlet 6, reducing displacement or loosening of the limiting rail 504 during the sliding and meshing of the drive wheel 501. The surface energy of the limiting rail 504 ensures that the sliding section 502 of the drive wheel 501 always moves along a preset trajectory during movement, providing positional assurance for the accurate meshing of the drive wheel 501 and the drive teeth. The rotational connection between the auxiliary roller 104 and the transmission sleeve 7 adopts a bearing structure. The rolling elements inside the bearing can convert the sliding friction between the auxiliary roller 104 and the transmission sleeve 7 into rolling friction, significantly reducing the frictional resistance between the two. This allows the transmission sleeve 7 to rotate more flexibly with the rotation of the drive wheel 501, ensuring no significant energy loss during power transmission. This makes the deflection adjustment action of the fabric rack more precise and sensitive, further improving the reliability of the fabric guide.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the fabric feeding mechanism 1 includes a movable frame 101 driven by a power component 2. The movable frame 101 has a drive roller 102 and an auxiliary roller 104 on both sides along its length. The drive roller 102 and the auxiliary roller 104 are connected by a conveyor chain plate 103 to form a closed belt drive structure. The drive roller 102 is driven by a drive motor 108, which in turn drives the conveyor chain plate 103 to rotate stably in a circular motion. A feeding structure 3 is provided above the conveyor chain plate 103 away from the feed inlet 6. During the process of the conveyor chain plate 103 moving stably above the feed inlet 6, it can stably receive the pellets conveyed by the feeding structure 3 and stably transfer the pellets conveyed by the feeding structure 3 into the feed inlet 6. Through the rotational acceleration of the conveyor chain plate 103 and the weight of the pellets themselves, the pellets fall parabolically into the feed inlet 6 between points A and B, so as to evenly distribute the pellets between points A and B above the feed inlet 6. The auxiliary roller 104 is rotatably connected to the transmission sleeve 7 at both ends by bearings. The transmission sleeve 7 is rotatably connected to the movable frame 101 to maintain the relative position of the transmission sleeve 7 and the auxiliary roller 104. This allows the auxiliary roller 104 to cooperate with the drive roller 102 to support the conveyor chain plate 103 to rotate stably in a circular manner, thereby stably transmitting the pellets to be distributed above the feed inlet 6.

[0023] like Figure 4As shown, the power assembly 2 includes a power roller 202 rotatably mounted on a support 205. The power roller 202 is driven to rotate by a power motor 201 fixed on the support 205. The rotation of the power roller 202 enables the cyclic displacement of the moving frame 101. The torque output by the power motor 201 during operation is transmitted to the power roller 202, causing the power roller 202 to rotate stably around its own axis. Since the drive guide groove 203 on the outer periphery of the power roller 202 is helical and is slidably connected to the drive block 204 on the moving frame 101, when the power roller 202 rotates, the helical surface of the drive guide groove 203 will generate a continuous axial thrust on the drive block 204. This thrust is not a simple linear force, but a component force combined with the transformation of circular motion. Under the guidance constraint of the helical structure, the drive block 204 can only move along the trajectory of the drive guide groove 203, thereby driving the moving frame 101 to make a linear cyclic motion in the section from A to B above the feed inlet 6 of the vertical furnace body. In this process, the spiral angle design of the drive guide trough 203 is crucial, as it directly determines the displacement distance of the moving frame 101 when the power roller 202 rotates one revolution. This ensures that the moving frame 101 can move at a uniform speed above the feed inlet 6 of the vertical furnace body, providing a stable motion foundation for the subsequent uniform distribution of pellets. Simultaneously, the sliding engagement between the limiting frame 105 at the bottom of the moving frame 101 and the supporting rail 107 not only restricts the lateral displacement of the moving frame 101 in the horizontal direction but also supports the overall weight of the moving frame 101, the conveyor chain plate 103, the pellets, and other components, preventing the moving frame 101 from sinking or tilting due to uneven force. The rotational support of the guide wheel 106 on the supporting rail 107 converts the sliding friction between the moving frame 101 and the supporting rail 107 into rolling friction, significantly reducing the coefficient of friction and energy loss during movement. This makes the movement of the moving frame 101 smoother and also reduces the wear rate of the supporting rail 107 and the bottom of the moving frame 101, extending the service life of the components.

[0024] In practical use, such as Figure 5 and Figure 6 As shown, when the moving frame 101 moves to point A above the feed inlet 6, and the drive wheel 501 meshes with the second drive tooth 506 on the limiting rail 504, the meshing of the second drive tooth 506 with the teeth on the drive wheel 501 drives the transmission sleeve 7 to rotate, causing the second baffle 404 to deflect accordingly, forming an inclined guide surface towards point A. This inclined guide surface provides an inclined support surface for the falling pellets. As the pellets slide down the guide surface under gravity, their original parabolic trajectory is changed, achieving a concentrated distribution of the pellets towards the edge at point A. This effectively solves the problem of sparse pellet distribution at the edge of point A due to the lack of guiding action at the edge in conventional fabrics. Figure 7 and Figure 8As shown, when the moving frame 101 is in the middle area between A and B, during the movement of the moving frame 101, the tooth segment 503 of the driving wheel 501 cooperates with the second driving tooth 506 to make the sliding segment 502 of the driving wheel 501 slide against the surface of the limiting rail 504. Specifically, the surface of the sliding segment 502 is square, thereby maintaining the contact area between the sliding segment 502 and the surface of the limiting rail 504, so as to limit the rotation of the transmission sleeve 7 to overcome the weight of the bending rod, the first baffle 401 and the second baffle 404, and keep the first baffle 401 and the second baffle 404 in the initial position, so that the conveyor chain plate 103 transmits and discharges the pellets without obstruction. The conveyor chain 103 transports the discharged pellets along an unobstructed path. The pellets are conveyed by the conveyor chain 103 to above the feed inlet 6 and then fall in an approximately parabolic trajectory. Simultaneously, because the moving frame 101 is continuously moving, the pellets move synchronously with the moving frame 101 in the horizontal direction, ultimately forming a uniform distribution within the A to B section, with small gaps between the pellets, achieving a dense and uniform distribution effect. Figure 9 and Figure 10 As shown, when the moving frame 101 reaches point B above the feed inlet 6, the first drive tooth 505 presses against the sliding section 502 of the drive wheel 501, causing the corresponding tooth section 503 of the drive wheel 501 to mesh with the first drive tooth 505 at point B. The torque generated at this time is opposite to that at point A, which causes the transmission sleeve 7 to drive the fabric frame to rotate in the opposite direction, causing the first baffle 401 to deflect and form a guide surface towards point B. When the pellets are discharged by the conveyor chain plate 103, the pellets will collide with the first baffle 401 and be guided by the guide surface formed by the first baffle 401 to fall towards the edge of point B, thereby achieving a concentrated distribution of pellets at the edge of point B, and thus achieving a balanced matching of the amount of pellets in the middle area between points A and B above the feed inlet 6 and the edge of points A and B.

[0025] The second baffle 404 has a wear-resistant layer at the edge facing the conveyor chain plate 103. When the edge of the moving frame 101 at point B is at the corresponding end, the edge of the second baffle 404 will scrape against the bottom of the conveyor chain plate 103, which is equivalent to cleaning the surface of the conveyor chain plate 103. The friction generated by the scraping can remove impurities and residual powder adhering to the conveyor chain plate 103, further ensuring the cleanliness of the conveyor chain plate 103 and preventing impurities from accumulating on the conveyor chain plate 103, which would affect the subsequent transport of pellets and the quality of the fabric. The wear-resistant layer has uniformly distributed protrusions so that when the wear-resistant layer scrapes against the conveyor chain plate 103, impurities on the conveyor chain plate 103 can be quickly discharged from the wear-resistant layer, thereby improving the cleaning efficiency of the wear-resistant layer on the conveyor chain plate 103. In this embodiment, the shape of the wear-resistant layer, conveyor chain plate 103, auxiliary roller 104, power roller 202, and drive guide groove 203, as well as the specific model and material of the drive roller 102, should all be understood as existing technology. The specific model, operation mode, and operation mode of the drive motor 108 and the power motor 201 should also be understood as existing technology.

[0026] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A pellet conveying device for sintering in a vertical shaft furnace, comprising a feeding mechanism (1) for feeding pellets into the feed inlet of the vertical shaft furnace, wherein the feeding mechanism (1) is driven by a power component (2) to reciprocate above the feed inlet (6), characterized in that: The auxiliary roller (104) of the fabric feeding mechanism (1) outputting the position of the pellets is equipped with a feed equalizer (4), which is driven by an intermittent deflection assembly (5). The feed equalizer (4) includes a first support plate (402) and a second support plate (403) symmetrically located at both ends of the auxiliary roller (104); a first baffle (401) is provided between the two first support plates (402), a second baffle (404) is provided between the two second support plates (403), and a channel for the pellets to pass through is provided between the first baffle (401) and the second baffle (404) and the conveyor chain plate (103) driven by the auxiliary roller (104); The intermittent deflection assembly (5) includes limiting rails (504) set on both sides of the feed inlet of the vertical furnace. Each limiting rail (504) is provided with a drive wheel (501) that cooperates with it. The drive wheel (501) is rotatably set at both ends of the auxiliary roller (104). The first support plate (402) and the second support plate (403) located on the same side of the auxiliary roller (104) rotate synchronously with the drive wheel (501) on that side. Each drive wheel (501) is provided with a sliding section (502) and a toothed section (503). The two ends of the limiting rail (504) are respectively provided with a first drive tooth (505) and a second drive tooth (506). When the tooth segment (503) of the drive wheel (501) meshes with the first drive tooth (505), the first baffle (401) deflects onto the path of the cloth feeding mechanism (1) discharging the pellets; when the tooth segment (503) meshes with the second drive tooth (506), the second baffle (404) deflects onto the path of the cloth feeding mechanism (1) discharging the pellets. When the sliding section (502) of the drive wheel (501) slides on the limiting rail (504), the first baffle (401) and the second baffle (404) move away from the path of the cloth feeding mechanism (1) to discharge the pellets. The pellet conveying device for vertical furnace sintering as described in claim 1 is characterized in that: the feeding mechanism (1) includes a movable frame (101), the movable frame (101) is driven by a power component (2) to reciprocate above the feed inlet (6), the end of the conveying chain plate (103) away from the auxiliary roller (104) is connected to a drive roller (102), the drive roller (102) is driven by a drive motor (108) provided on the movable frame (101), and the auxiliary roller (104) and the drive roller (102) are rotatably connected on the movable frame (101).

2. The pellet conveying device for vertical shaft furnace sintering as described in claim 2, characterized in that: The power assembly (2) includes a power roller (202) rotatably mounted on a bracket (205) and a power motor (201) fixedly mounted on the bracket (205). The power motor (201) drives the power roller (202) to rotate. A spiral drive guide groove (203) is provided on the outer periphery of the power roller (202). A drive block (204) is fixedly mounted on the moving frame (101). The drive block (204) is slidably connected in the drive guide groove (203).

3. The pellet conveying device for vertical shaft furnace sintering as described in claim 2, characterized in that: The bottom of the movable frame (101) is provided with a limiting frame (105) and a guide wheel (106), and the limiting frame (105) and the guide wheel (106) are slidably connected to the bearing rail (107) located above the feed inlet (6).

4. The pellet conveying device for vertical shaft furnace sintering as described in claim 1, characterized in that: The first support plate (402) and the second support plate (403) on the same side are both fixedly connected to the transmission sleeve (7), the drive wheel (501) is fixedly located on the outer periphery of the transmission sleeve (7), and the end of the auxiliary roller (104) is rotatably connected to the transmission sleeve (7).

5. The pellet conveying device for vertical shaft furnace sintering as described in claim 6, characterized in that: A bearing is provided between the auxiliary roller (104) and the transmission sleeve (7), and another bearing is provided between the transmission sleeve (7) and the moving frame (101).

6. The pellet conveying device for vertical shaft furnace sintering as described in claim 1, characterized in that: The second baffle (404) has a wear-resistant layer at its edge, and the surface of the wear-resistant layer has protrusions.

7. The pellet conveying device for vertical shaft furnace sintering as described in claim 1, characterized in that: The limiting rail (504) is connected to the inner wall above the feed port (6) by screws.

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