Screening equipment and pellet production line

Abstract

This application discloses a screening equipment and a pellet production line, relating to the field of pellet production technology. The screening equipment includes a screening device, a conveying device, and a scraper device. The conveying device and the screening device are spaced apart and oscillate relative to the screening device. The scraper device is disposed between the conveying device and the screening device, and includes a connecting component and a scraper. One end of the connecting component is connected to the conveying device, and the other end of the connecting component is connected to the scraper. The end of the scraper away from the connecting component contacts the screening device. The screening equipment of this application can reduce the accumulation of materials on the screening device.

Description

Technical Field

[0001] This utility model relates to the field of pellet production technology, and more specifically, to a screening device and a pellet production line. Background Technology

[0002] During the pellet production process, the screening equipment uses the oscillation of the conveying device to evenly distribute the raw pellets on the screening device. However, in actual production, the powder contained in the pellets is easy to stick to the screening device. As the sticky material accumulates, it will reduce the screening capacity of the screening device, affect the uniformity of product quality, and cause problems such as material accumulation, equipment jamming, and even production line shutdown. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a screening device that can reduce the accumulation of materials on the screening device.

[0004] This application also provides a pellet production line.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, this application provides a screening device, comprising: a screening unit; a conveying unit spaced apart from the screening unit and oscillating relative to the screening unit; and a scraper device disposed between the conveying unit and the screening unit, the scraper device comprising a connecting component and a scraper, one end of the connecting component being connected to the conveying unit, the other end of the connecting component being connected to the scraper, and the end of the scraper away from the connecting component contacting the screening unit.

[0007] In an optional embodiment, the connecting assembly includes a connecting rod and a connecting plate, one end of the connecting rod being connected to the conveying device, the other end of the connecting rod being connected to the connecting plate, and the scraper being connected to the connecting plate.

[0008] In an optional embodiment, the connecting assembly includes a plurality of connecting rods, which are spaced apart along the length of the connecting plate.

[0009] In an optional embodiment, the screening equipment has a height direction, the screening device and the conveying device are spaced apart along the height direction, and the conveying device is located above the screening device along the height direction. The scraper device is located between the screening device and the conveying device along the height direction, and the scraper contacts the side of the screening device facing the conveying device along the height direction.

[0010] In an optional embodiment, the connecting assembly further includes a connecting sleeve connected to the conveying device, and the connecting rod passes through the connecting sleeve and is slidably connected to the connecting sleeve.

[0011] In an optional embodiment, the connecting sleeve is coaxially arranged with the connecting rod.

[0012] In an optional embodiment, the connecting assembly includes a plurality of connecting sleeves, which are spaced apart along the length of the connecting plate, and each connecting rod passes through one of the connecting sleeves.

[0013] In an optional embodiment, the screening device has a length direction, a width direction, and a height direction, wherein the length direction, the width direction, and the height direction are perpendicular to each other. The screening device includes a plurality of screening rollers, which are spaced apart along the length direction. Each screening roller rotates about the width direction. The conveying device oscillates relative to the plurality of screening rollers about the height direction. The scraper extends along the length direction.

[0014] In an optional embodiment, the angle at which the conveying device swings relative to the plurality of screening rollers about the height direction is α, satisfying: 20°≤α≤30°.

[0015] Secondly, this application provides a pellet production line, including: screening equipment as described in any of the foregoing embodiments.

[0016] The screening equipment of this application has the following advantages:

[0017] In the screening equipment of this application, the conveying device is used to convey materials onto the screening device. Since the conveying device can oscillate relative to the screening device, it can evenly distribute the material onto the screening device through oscillation, facilitating material screening. During this process, one end of the connecting assembly of the scraper device is connected to the conveying device, and the other end is connected to the scraper. Thus, the scraper and conveying device are connected through the connecting assembly. When the conveying device oscillates relative to the screening device, the scraper oscillates relative to the screening device. Since the end of the scraper away from the connecting assembly is in contact with the screening device, when the scraper oscillates relative to the screening device, it can scrape the surface of the screening device, removing adhering materials and reducing material accumulation on the screening device. This minimizes the impact on the screening capacity and ensures screening quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the main structure of the screening device in this application is shown;

[0020] Figure 2 A top view of the screening equipment in this application is shown.

[0021] Figure 3 A three-dimensional structural schematic diagram of the scraper device in this application is shown.

[0022] Explanation of key component symbols:

[0023] 100 - Screening device; 110 - Screening roller;

[0024] 200 - Conveying device;

[0025] 300 - Scraper device; 310 - Connecting assembly; 311 - Connecting rod; 312 - Connecting plate; 313 - Connecting sleeve; 320 - Scraper; 330 - Fastener;

[0026] x - length direction; y - width direction; z - height direction. Detailed Implementation

[0027] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] Reference Figure 1 as well as Figure 3 As shown, the screening equipment involved in the embodiments of this application includes: a screening device 100, a conveying device 200, and a scraper device 300.

[0033] Specifically, the conveying device 200 and the screening device 100 are spaced apart and swing relative to the screening device 100; the scraper device 300 is disposed between the conveying device 200 and the screening device 100. The scraper device 300 includes a connecting component 310 and a scraper 320. One end of the connecting component 310 is connected to the conveying device 200, and the other end of the connecting component 310 is connected to the scraper 320. The end of the scraper 320 away from the connecting component 310 contacts the screening device 100.

[0034] In the screening equipment of this application, the conveying device 200 is used to convey materials onto the screening device 100. Since the conveying device 200 can swing relative to the screening device 100, the conveying device 200 can evenly distribute the materials onto the screening device 100 by swinging, so that the screening device 100 can screen the materials. In this process, since one end of the connecting component 310 of the scraper device 300 is connected to the conveying device 200 and the other end of the connecting component 310 is connected to the scraper 320, the scraper 320 can be connected to the conveying device 200 through the connecting component 310. When the conveying device 200 swings relative to the screening device 100, the scraper 320 can swing relative to the screening device 100. Since the end of the scraper 320 away from the connecting component 310 is in contact with the screening device 100, when the scraper 320 swings relative to the screening device 100, the scraper 320 can scrape the surface of the screening device 100 to remove the adhering material on the surface of the screening device 100, thereby reducing the accumulation of material on the screening device 100, reducing the impact on the screening capacity of the screening device 100, and ensuring the screening quality.

[0035] Reference Figure 3 As shown, the connecting assembly 310 includes a connecting rod 311 and a connecting plate 312. One end of the connecting rod 311 is connected to the conveying device 200, and the other end of the connecting rod 311 is connected to the connecting plate 312. The scraper 320 is connected to the connecting plate 312.

[0036] In this embodiment, since one end of the connecting rod 311 is connected to the conveying device 200 and the other end of the connecting rod 311 is connected to the connecting plate 312, the connecting plate 312 can be connected to the conveying device 200 through the connecting rod 311. Since the scraper 320 is connected to the connecting plate 312, the scraper 320 can be connected to the conveying device 200 through the connecting plate 312, so that the scraper 320 can swing relative to the screening device 100 along with the conveying device 200, thereby scraping off the adhesive on the surface of the screening device 100 through the scraper 320. At the same time, the connecting plate 312 can improve the structural strength of the scraper 320, thereby reducing the possibility of deformation of the scraper 320 during the scraping motion, thereby improving the scraping effect of the scraper 320 on the adhesive.

[0037] Specifically, in this embodiment, the connecting plate 312 is made of carbon steel or stainless steel to improve the structural strength of the scraper 320.

[0038] Continue to refer to Figure 3 As shown, the connecting assembly 310 includes multiple connecting rods 311, which are spaced apart along the length x of the connecting plate 312.

[0039] In this embodiment, since multiple connecting rods 311 are spaced apart along the length x of the connecting plate 312, the connecting plate 312 can be connected to the conveying device 200 at various points along its length x through the multiple connecting rods 311, thereby improving the connection stability between the connecting plate 312 and the conveying device 200, and thus improving the motion consistency between the scraper 320 and the conveying device 200.

[0040] Reference Figure 1 As shown, the screening equipment has a height direction z. The screening device 100 and the conveying device 200 are arranged at intervals along the height direction z, and the conveying device 200 is arranged above the screening device 100 along the height direction z. The scraper device 300 is arranged between the screening device 100 and the conveying device 200 along the height direction z, and the scraper 320 contacts the side of the screening device 100 facing the conveying device 200 along the height direction z.

[0041] It should be noted that the height direction z is Figure 1 The direction indicated by z in the middle.

[0042] In this embodiment, since the conveying device 200 is positioned above the screening device 100 along the height direction z, when the conveying device 200 swings relative to the screening device 100, the material on the conveying device 200 can fall onto the screening device 100 under the action of gravity, thus facilitating the screening of the material. Furthermore, since the scraper device 300 is positioned between the screening device 100 and the conveying device 200 along the height direction z, and the scraper 320 contacts the side of the screening device 100 facing the conveying device 200 along the height direction z, the scraper 320 can contact the surface of the screening device 100 carrying the material, thereby scraping off the adhesive material on the surface of the screening device 100 and reducing the accumulation of material on the screening device 100.

[0043] Reference Figure 3 As shown, the connecting assembly 310 also includes a connecting sleeve 313, which is connected to the conveying device 200. The connecting rod 311 passes through the connecting sleeve 313 and is slidably connected to the connecting sleeve 313.

[0044] In this embodiment, since the connecting sleeve 313 is connected to the conveying device 200, and the connecting rod 311 passes through the connecting sleeve 313, the connecting rod 311 can be connected to the conveying device 200 through the connecting sleeve 313. Since the connecting rod 311 is slidably connected to the connecting sleeve 313, the connecting rod 311 can slide within the connecting sleeve 313, thereby driving the scraper 320 to move. When the scraper 320 wears out after long-term use, it can move relative to the connecting sleeve 313 towards the screening device 100 under the action of gravity, so that the scraper 320 can always be in contact with the surface of the screening device 100, thereby improving the scraping effect of the scraper 320 on the adhesive material.

[0045] Specifically, the connecting sleeve 313 and the connecting rod 311 are coaxially arranged.

[0046] In this embodiment, since the connecting sleeve 313 and the connecting rod 311 are coaxially arranged, when the scraper 320 moves relative to the connecting sleeve 313 toward the direction closer to the screening device 100 under the action of gravity, the smoothness of the sliding of the connecting rod 311 in the connecting sleeve 313 can be improved, thereby improving the smoothness of the movement of the scraper 320 and ensuring that the scraper 320 can always be in contact with the surface of the screening device 100.

[0047] Specifically, in this embodiment, the connecting sleeve 313 is welded to the conveying device 200 to improve the connection stability between the connecting sleeve 313 and the conveying device 200, thereby improving the movement stability of the connecting rod 311.

[0048] Reference Figure 3 As shown, the connecting assembly 310 includes a plurality of connecting sleeves 313, which are spaced apart along the length x of the connecting plate 312, and each connecting rod 311 passes through a connecting sleeve 313.

[0049] In this embodiment, since multiple connecting sleeves 313 are spaced apart along the length x of the connecting plate 312, and each connecting rod 311 passes through a connecting sleeve 313, each connecting rod 311 can slide relative to a connecting sleeve 313, thereby improving the consistency of movement of multiple connecting rods 311. This ensures that the scraper 320 can always be in contact with the surface of the screening device 100 along its length x, thereby improving the scraping effect of the scraper 320 on the adhesive material.

[0050] Continue to refer to Figure 3 As shown, the scraper device 300 also includes a fastener 330. The scraper 320 and the connecting plate 312 are detachably connected by the fastener 330 to realize the connection between the scraper 320 and the connecting plate 312, and at the same time facilitate the replacement of the scraper 320.

[0051] Reference Figure 1 as well as Figure 2 As shown, the screening equipment has a length direction x, a width direction y, and a height direction z. The length direction x, the width direction y, and the height direction z are perpendicular to each other. The screening device 100 includes a plurality of screening rollers 110, which are spaced apart along the length direction x. Each screening roller 110 rotates around the width direction y. The conveying device 200 oscillates relative to the plurality of screening rollers 110 around the height direction z. The scraper 320 extends along the length direction x.

[0052] It should be noted that the length direction x is Figure 2 The x-axis points in the direction of the width, and the y-axis is the width direction. Figure 2 The direction indicated by y in the middle.

[0053] In this embodiment, since the conveying device 200 oscillates relative to the plurality of screening rollers 110 about the height direction z, the material on the conveying device 200 can fall onto the screening device 100 during the oscillation of the conveying device 200. Since the screening device 100 includes a plurality of screening rollers 110, which are spaced apart along the length direction x, and each screening roller 110 rotates about the width direction y, the material on the screening device 100 can be screened by the rotation of the screening rollers 110. Since the scraper 320 extends along the length direction x, when the conveying device 200 oscillates relative to the screening device 100, the scraper 320 can contact the surface of each screening roller 110, so that the scraper 320 can scrape off the material adhering to the surface of each screening roller 110, thereby improving the scraping effect of the scraper device 300.

[0054] Reference Figure 2 As shown, the angle of the oscillation of the conveying device 200 relative to the multiple screening rollers 110 about the height direction z is α, which satisfies: 20°≤α≤30°.

[0055] Specifically, α can be 20°, 21°, 22°, 23°, 24°, 25°, 26°, 27°, 28°, 29°, 30°, etc.

[0056] In this embodiment, if the swing angle α of the conveying device 200 is less than 20°, the swing angle of the conveying device 200 will be too small, and the material will easily accumulate on the screening device 100, making it impossible to distribute it evenly on the screening device 100. At the same time, it will also reduce the scraping area of ​​the scraper 320 on the screening device 100, resulting in a decrease in the scraping effect of the scraper 320 on the adhesive material on the screening device 100. If the swing angle α of the conveying device 200 is greater than 30°, the swing angle of the conveying device 200 will be too large, and the material will easily fall outside the screening device 100. When 20°≤α≤30°, the material can be evenly distributed on the screening device 100, and the scraping effect of the scraper 320 on the adhesive material on the screening device 100 can be improved.

[0057] The pellet production line involved in the embodiments of this application includes the screening equipment described above.

[0058] It should be noted that a pelletizing production line is an industrial production system used to process fine-grained mineral powder (such as iron concentrate, red mud, etc.) into spherical particles (i.e., "pellets") with certain strength and metallurgical properties through physicochemical treatment. Its core objective is to transform loose, poorly flowing fine-grained mineral powder, which cannot be directly used in blast furnace smelting, into lumpy raw materials suitable for use in blast furnaces or direct reduction furnaces. The main task of the screening equipment is to classify and prepare the "green pellets" formed after pelletizing, ensuring that the material entering the subsequent drying and roasting processes meets the process requirements. This is a crucial link in the stable operation of the entire production line.

[0059] In the pellet production line of this application, the screening equipment is used to screen the raw pellets. Since the screening equipment can reduce the accumulation of materials on the screening device 100, the pellet production line of this application can have high production efficiency and good pellet production quality.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A screening apparatus, characterized in that, include: Screening device; A conveying device is provided at an interval from the screening device and oscillates relative to the screening device; A scraper device is disposed between the conveying device and the screening device. The scraper device includes a connecting component and a scraper. One end of the connecting component is connected to the conveying device, and the other end of the connecting component is connected to the scraper. The end of the scraper away from the connecting component is in contact with the screening device.

2. The screening apparatus of claim 1, wherein, The connecting assembly includes a connecting rod and a connecting plate. One end of the connecting rod is connected to the conveying device, and the other end of the connecting rod is connected to the connecting plate. The scraper is connected to the connecting plate.

3. The screening apparatus of claim 2, wherein, The connecting assembly includes multiple connecting rods, which are spaced apart along the length of the connecting plate.

4. The screening apparatus of claim 2, wherein, The screening equipment has a height direction, the screening device and the conveying device are spaced apart along the height direction, and the conveying device is located above the screening device along the height direction. The scraper device is located between the screening device and the conveying device along the height direction, and the scraper is in contact with the side of the screening device facing the conveying device along the height direction.

5. The screening apparatus of claim 4, wherein, The connecting assembly further includes a connecting sleeve, which is connected to the conveying device. The connecting rod passes through the connecting sleeve and is slidably connected to the connecting sleeve.

6. The screening apparatus of claim 5, wherein, The connecting sleeve is coaxially arranged with the connecting rod.

7. The screening apparatus of claim 5, wherein, The connecting assembly includes a plurality of connecting sleeves, which are spaced apart along the length of the connecting plate, and each connecting rod passes through one of the connecting sleeves.

8. The screening apparatus of claim 1, wherein, The screening equipment has a length direction, a width direction, and a height direction, and the length direction, the width direction, and the height direction are perpendicular to each other. The screening device includes multiple screening rollers, which are spaced apart along the length direction. Each screening roller rotates around the width direction. The conveying device oscillates relative to the multiple screening rollers around the height direction. The scraper extends along the length direction.

9. The screening apparatus of claim 8, wherein, The angle at which the conveying device swings relative to the plurality of screening rollers about the height direction is α, satisfying: 20°≤α≤30°.

10. A pellet production line, characterized by include: The screening equipment as described in any one of claims 1-9.

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