Device for preventing the bursting of pellets during induration

Abstract

The utility model discloses a kind of prevent pellet roasting burst device, including fixing frame, and fixing frame is provided with material receiving subassembly, multiple supporting columns are vertically slidably arranged on material receiving subassembly, material taking subassembly is horizontally slidably arranged above material receiving subassembly, and multiple material taking needles are vertically slidably arranged on material taking subassembly.In the utility model, green pellet is conveyed to material receiving subassembly, is lifted by the lifting of supporting column and is lifted, then material taking subassembly moves to the top of material receiving subassembly, material taking needle slides down and pierces into green pellet, and after piercing, it can be lifted by moving upwards, and then material taking subassembly moves green pellet to the side of material receiving subassembly, as material taking needle slides up, green pellet can fall from material taking subassembly and is conveyed to drying furnace to dry, since material taking needle pierces multiple holes on green pellet, green pellet can be heated more evenly during drying process, and avoid green pellet from bursting or other situations.

Description

Technical Field

[0001] This utility model relates to the field of pellet preparation technology, and in particular to a device for preventing pellets from cracking during roasting. Background Technology

[0002] Pelletizing is one of the important methods for agglomerating mineral powder. First, the mineral powder is mixed with an appropriate amount of water and binder to form green pellets with uniform viscosity and sufficient strength. After drying and preheating, the green pellets are roasted in an oxidizing atmosphere to agglomerate and form ore pellets.

[0003] During the pelleting process, a certain amount of water and binder are added to the powder to make the pellets clump together. Therefore, the raw pellets contain a certain amount of moisture inside, so they need to be dried. However, the pellets are usually stacked in multiple layers on the grate during the drying process. This causes the pellets to not be heated from all sides, affecting the drying speed. It also causes the surface of the pellets to dry but the inside to still contain moisture. This situation can cause the pellets to burst and shatter, making it impossible for them to clump together and affecting their subsequent use. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a device to prevent pellets from cracking during roasting.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A device for preventing pellets from cracking during roasting includes a fixed frame, on which a receiving component is fixedly mounted, and on which a plurality of lifting columns are vertically slidably mounted, and above which a material picking component is horizontally slidably mounted, and on which a plurality of material picking needles are vertically slidably mounted.

[0007] Preferably, the receiving assembly includes a receiving cylinder, which is fixedly mounted on a fixed frame. A lower support plate is fixedly mounted on the upper end of the receiving cylinder, and the lifting column is slidably mounted on the lower support plate.

[0008] Preferably, the upper end of the supporting column is provided with a semi-circular recess.

[0009] Preferably, a lower connecting plate is slidably disposed inside the receiving cylinder, the lower connecting plate is located below the lower support plate, and the lower end of the lifting column is fixedly disposed on the lower connecting plate.

[0010] Preferably, a truss is fixedly mounted on the fixed frame, and the material handling component is horizontally slidably mounted on the truss.

[0011] Preferably, the material handling assembly includes a sliding plate, which is slidably disposed on the truss. A material handling cylinder is fixedly disposed on the lower end face of the sliding plate, and an upper support plate is fixedly disposed inside the material handling cylinder. The material handling needle is slidably disposed on the upper support plate.

[0012] Preferably, an upper connecting plate is slidably disposed inside the feeding cylinder, the upper connecting plate is located above the upper support plate, and the upper end of the feeding needle is fixedly disposed on the upper connecting plate.

[0013] Preferably, a baffle is rotatably provided at the lower end of the material receiving cylinder.

[0014] Preferably, the assembly further includes a conveying component, which includes a discharge cylinder fixedly mounted on the fixed frame, a plurality of discharge pipes fixedly mounted inside the discharge cylinder, a discharge bag connected to the lower end of the discharge pipes, the discharge bag being made of a flexible material, and a conveyor being provided below the discharge bag.

[0015] The beneficial effects of adopting the above technical solution are as follows:

[0016] 1. In this utility model, before the pellets enter the drying oven, the picking needle is inserted into the pellets in the receiving cylinder. When the picking needle moves upward, it can lift the pellets and transfer them to the dropping cylinder. As the picking needle moves upward, the pellets fall into the dropping cylinder and are conveyed to the drying oven by the conveyor for drying. Since the picking needle is inserted into the pellets, it can form a through hole in the pellets. During the drying process, the water vapor inside the pellets can be quickly discharged, avoiding the pellets from bursting due to dampness inside the pellets.

[0017] 2. In this utility model, the feed bag is made of flexible material, which can act as a buffer when the pellets are conveyed through the feed bag, so as to prevent the pellets from falling directly onto the conveyor and causing the pellets to break and be damaged. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the material receiving component structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the material handling component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the material feeding assembly structure of this utility model.

[0022] In the diagram: 1 is the fixed frame, 2 is the supporting column, 3 is the material picking needle, 4 is the receiving cylinder, 5 is the lower support plate, 6 is the recess, 7 is the lower connecting plate, 8 is the truss, 9 is the sliding plate, 10 is the material picking cylinder, 11 is the upper support plate, 12 is the upper connecting plate, 13 is the baffle, 14 is the dropping cylinder, 15 is the dropping pipe, 16 is the dropping bag, 17 is the conveyor, 18 is the bottom plate, 19 is the limit ring, 20 is the lower cylinder, 21 is the horizontal bar, 22 is the vertical bar, 23 is the top plate, 24 is the slide rail, 25 is the slider, 26 is the lead screw, 27 is the upper cylinder, and 28 is the material blocking motor. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] like Figures 1 to 4As shown, a device for preventing pellets from bursting during roasting includes a fixed frame 1, on which a receiving component is fixedly mounted. The fixed frame 1 includes legs and a platform mounted on the legs. The receiving component is mounted on the platform of the fixed frame 1 and is used to receive the prepared green pellets. Multiple lifting columns 2 are vertically slidably mounted on the receiving component. When the lifting columns 2 slide upward, they can lift the green pellets accumulated in the receiving component. Each lifting column 2 can lift one green pellet. A picking component is horizontally slidably mounted above the receiving component. Multiple picking needles 3 are vertically slidably mounted on the picking component. In this invention, after the green pellets are produced, they are conveyed to the receiving assembly. Because a large number of green pellets accumulate in the receiving assembly, the picking needle 3 cannot easily remove them. Therefore, the lifting column 2 is lifted from the picking assembly, and each lifting column 2 can lift one green pellet, detaching it from the accumulated green pellets. Then, the picking assembly slides to the top, and the picking needle 3 slides downwards, piercing the green pellet lifted by the lifting column 2. Subsequently, the picking needle 3 slides upwards, along with the picking needle... The upward movement of pin 3 causes the green pellets to move upward with the feeding pin 3, removing the green pellets from the receiving component. Finally, the feeding component slides to one side of the receiving component. As the feeding pin 3 continues to move upward, the feeding component pushes the green pellets down from the feeding pin 3, causing the green pellets to fall. The fallen green pellets have holes, and the inside and outside of the green pellets are connected through the holes. When drying the green pellets, the inside and outside of the green pellets can be heated simultaneously, avoiding uneven heating that could cause cracking and damage.

[0027] It should be noted that, in order to increase the friction between the feeding needle 3 and the green pellet and to prevent the green pellet from falling off during the movement of the feeding needle 3, the surface of the feeding needle 3 is provided with knurled patterns or anti-slip stripes, thereby increasing the friction between the feeding needle 3 and the green pellet.

[0028] Furthermore, such as Figure 2 As shown, the receiving assembly includes a receiving cylinder 4, which is a cylindrical structure. The lower end of the receiving cylinder 4 is fixedly mounted on the platform of the fixing frame 1. A bottom plate 18 is horizontally fixed inside the receiving cylinder 4. A lower support plate 5 is fixedly mounted on the upper end of the receiving cylinder 4. The lower support plate 5 is horizontally mounted. The lifting column 2 is slidably mounted on the lower support plate 5. Multiple holes are evenly opened on the lower support plate 5. The lifting column 2 is slidably mounted in the holes opened in the lower support plate 5. In order to facilitate the lifting column 2 to lift the green pellets, a semi-circular recess 6 is provided on the upper end surface of the lifting column 2. The recess 6 is used to accommodate the green pellets and prevent the green pellets from falling from the upper end of the lifting column 2. In this embodiment, the lifting column 2 is first slid downward so that the upper end face of the lifting column 2 is flush with the upper end face of the lower support plate 5 or located below the lower support plate 5. Then, the green pellets are transported to the receiving cylinder 4. The green pellets will be piled up on the lower support plate 5 in large quantities. As the lifting column 2 rises, each lifting column 2 can lift one of the green pellets, which facilitates the subsequent insertion and picking up of the material by the picking needle 3.

[0029] Furthermore, in order to hold more green pellets in the receiving cylinder 4, a limiting ring 19 is fixedly installed at the upper end of the receiving cylinder 4. The limiting ring 19 can intercept the green pellets and prevent them from falling from the edge of the receiving cylinder 4, thereby allowing more green pellets to be stacked.

[0030] Furthermore, a lower connecting plate 7 is slidably disposed inside the receiving cylinder 4. The lower connecting plate 7 is located between the lower support plate 5 and the bottom plate 18. The lower end of the lifting column 2 is fixedly disposed on the lower connecting plate 7. A lower cylinder 20 is fixedly disposed on the bottom plate 18 of the receiving cylinder 4. The piston rod of the lower cylinder 20 passes through the bottom plate 18 and is fixedly connected to the lower connecting plate 7. The extension and retraction of the piston rod of the lower cylinder 20 can drive the lower connecting plate 7 to slide up and down, thereby enabling the lifting column 2 to slide up and down inside the receiving cylinder 4.

[0031] Furthermore, a truss 8 is fixedly installed on the fixed frame 1, and the material picking component is horizontally slidably installed on the truss 8; the truss 8 includes a horizontal bar 21 and vertical bars 22 fixedly installed at both ends of the horizontal bar 21, and the vertical bars 22 are vertically fixedly installed on the platform of the fixed frame 1.

[0032] Furthermore, such as Figure 3 As shown, the material handling assembly includes a sliding plate 9, which is slidably mounted on the horizontal bar 21 of the truss 8. A material handling cylinder 10 is fixedly mounted on the lower end face of the sliding plate 9. The material handling cylinder 10 has a cylindrical structure, and a top plate 23 is horizontally fixedly mounted inside the material handling cylinder 10. An upper support plate 11 is also fixedly mounted inside the material handling cylinder 10. The upper support plate 11 is located inside the material handling cylinder 10, and the upper support plate 11 and the top plate 23 are arranged parallel to each other. The distance between the lower end face of the upper support plate 11 and the lower end face of the material handling cylinder 10 is greater than the diameter of the green pellet. Therefore, the material handling needle 3 pierces the green pellet and retracts the material handling cylinder 10. During the process, the green pellets can be completely inserted into the feeding cylinder 10. The upper support plate 11 has multiple feeding needle holes. The feeding needles 3 are slidably disposed in the feeding needle holes on the upper support plate 11. The number of feeding needles 3 is the same as the number of supporting columns 2, and the position of the feeding needles 3 corresponds one-to-one with the position of the supporting columns 2. The feeding needles 3 are located at the center of the supporting columns 2. Therefore, the feeding needles 3 directly above each supporting column 2 can penetrate and pierce through the green pellets, so that a through hole is pierced in the center of the green pellets. During the roasting process, the water vapor inside the green pellets can be discharged from the hole.

[0033] It should be noted that a slide rail 24 is horizontally installed on the horizontal bar 21 of the truss 8, and a slider 25 is fixedly installed on the upper end face of the sliding plate 9. The slider 25 is slidably installed on the slide rail 24. In order to drive the slider 25 and the sliding plate 9 to slide horizontally along the horizontal bar 21 of the truss 8, a lead screw 26 is rotatably installed on the horizontal bar 21. The lead screw 26 is parallel to the slide rail 24 and is connected to a motor fixed at one end of the horizontal bar 21, thereby driving the lead screw 26 to rotate. The slider 25 is provided with a lead screw nut, and the lead screw nut is threadedly connected to the lead screw 26. Therefore, during the rotation of the lead screw 26, the slider 25 and the sliding plate 9 can be driven to slide horizontally.

[0034] Furthermore, an upper connecting plate 12 is slidably disposed inside the feeding cylinder 10. The upper connecting plate 12 is located between the upper support plate 11 and the top plate 23. The upper end of the feeding needle 3 is fixedly disposed on the upper connecting plate 12. An upper cylinder 27 is fixedly disposed on the top plate 23. The piston rod of the upper cylinder 27 passes through the top plate 23 and is fixedly connected to the upper connecting plate 12. The extension and retraction of the piston rod of the upper cylinder 27 can drive the upper connecting plate 12 and the feeding needle 3 to slide up and down, thereby piercing and transporting the green pellets.

[0035] Furthermore, a baffle 13 is rotatably installed at the lower end of the feeding cylinder 10, and a baffle motor 28 is fixedly installed on the side wall of the feeding cylinder 10. The output shaft of the baffle motor 28 is fixedly connected to the baffle 13. When the output shaft of the baffle motor 28 rotates, it can drive the baffle 13 to rotate around the output shaft of the baffle motor 28. When piercing and conveying the green pellets, the baffle 13 rotates to open the lower end of the feeding cylinder 10, exposing the feeding needle 3. The piston rod of the upper cylinder 27 extends and drives the feeding needle 3 to slide downward, piercing the green pellet. Then, the piston rod of the upper cylinder 27 retracts and drives the feeding needle 3 to move upward. The green pellet follows the feeding needle 3 upward until the green pellet enters the inner part of the feeding cylinder 10. In the first part, the baffle motor 28 drives the baffle 13 to rotate, and the baffle 13 closes the lower end of the feeding cylinder 10 to prevent the green pellets from falling during transportation. When the green pellets are transported to the position, the baffle 13 rotates, opening the lower end of the feeding cylinder 10. The upper cylinder 27 drives the upper connecting plate 12 and the feeding needle 3 to continue moving upward until the feeding needle 3 moves above the upper support plate 11. During the upward movement of the feeding needle 3, when the green pellets on the feeding needle 3 encounter the upper support plate 11, the upper support plate 11 can block the green pellets. As the feeding needle 3 continues to move upward until the feeding needle 3 is completely detached from the green pellets, the green pellets can fall from the feeding needle 3 and enter the drying oven for drying.

[0036] Furthermore, such as Figure 1 and Figure 4As shown, it also includes a conveying assembly for conveying green pellets from the feeding assembly to the drying oven. The conveying assembly includes a dropping cylinder 14 fixedly mounted on the fixed frame 1. The dropping cylinder 14 is located on one side of the receiving cylinder 4. The feeding cylinder 10 can be moved above the dropping cylinder 14. The dropping cylinder 14 is a cylindrical structure with both ends through it. The dropping cylinder 14 is fixedly mounted on the platform of the fixed frame 1 and passes through the platform of the fixed frame 1. A support plate is horizontally fixedly mounted inside the dropping cylinder 14. Multiple dropping pipes 15 are fixedly mounted inside the dropping cylinder 14. The dropping pipes 15 are fixedly mounted on the support plate. The dropping pipes 15 are funnel-shaped structures. The lower end of the dropping pipes 15 is connected to a dropping bag 16. The dropping bag 16 is a long cylindrical structure with openings at both ends. The dropping bag 16 is made of a flexible material, such as a canvas bag. A conveyor 17 is provided below the dropping bag 16. The conveyor 17 is a belt conveyor. In this embodiment, after the feeding needle 3 removes the green pellets from the receiving cylinder 4, the feeding cylinder 10 slides along the truss 8 to the top of the dropping cylinder 14. The green pellets fall from the feeding cylinder 10 and enter the dropping cylinder 14. The fallen green pellets can fall from the dropping pipe 15 into the dropping bag 16, and then fall along the dropping bag 16 onto the conveyor 17 for conveying until they are conveyed to the drying oven for drying. The dropping bag 16 is made of flexible material, which can buffer the green pellets during the falling process and prevent the green pellets from breaking or being damaged.

[0037] Furthermore, a lifting cylinder is provided between the picking cylinder 10 and the sliding plate 9. The cylinder of the lifting cylinder is fixedly located on the lower end face of the sliding plate 9, and the piston rod of the lifting cylinder is fixedly connected to the top plate 23 inside the picking cylinder 10. The lifting cylinder can drive the picking cylinder 10 to rise or fall by extending and retracting the piston rod. When picking up green pellets from the receiving cylinder 4, the piston rod of the lifting cylinder retracts, causing the picking cylinder 10 to rise above the receiving cylinder 4. When the green pellets are discharged from the picking cylinder 10, the picking cylinder 10 slides above the dropping cylinder 14 through the sliding plate 9. Then the piston rod of the lifting cylinder extends, causing the picking cylinder 10 to fall, thereby reducing the distance between the picking cylinder 10 and the dropping cylinder 14 and preventing the green pellets from breaking and being damaged due to excessive distance when they fall.

[0038] A production method for preventing pellet cracking during roasting includes the following steps:

[0039] S1. The green pellets are conveyed into the receiving cylinder, and the lifting columns slide upwards, each lifting column can lift one pellet;

[0040] S2. Slide the material taking cylinder above the receiving cylinder, and slide the material taking needle downward to insert it into the pellet lifted by the lifting column;

[0041] S3. The feeding needle slides upward, taking the pellet from the lifting column and moving it upward into the feeding cylinder. The baffle rotates and closes the feeding cylinder to prevent the pellet from falling.

[0042] S4. The feeding cylinder slides above the dropping cylinder, and the baffle is rotated to open the lower end of the feeding cylinder. The feeding needle continues to slide upward until it slides above the upper support plate. The upper support plate can block the pellets and make the pellets fall into the dropping cylinder. The pellets are transported along the dropping bag to the conveyor, and the conveyor can transport the pellets to the drying oven for drying.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for preventing pellet cracking during roasting, characterized in that, Includes a fixed frame (1), on which a receiving component is fixedly installed, and on which a plurality of lifting columns (2) are vertically slidably installed, and on which a material picking component is horizontally slidably installed, and on which a plurality of material picking needles (3) are vertically slidably installed.

2. The device for preventing pellet cracking during roasting according to claim 1, characterized in that, The receiving assembly includes a receiving cylinder (4), which is fixedly mounted on a fixed frame (1). A lower support plate (5) is fixedly mounted on the upper end of the receiving cylinder (4), and the lifting column (2) is slidably mounted on the lower support plate (5).

3. The device for preventing pellet cracking during roasting according to claim 2, characterized in that, The upper end of the supporting column (2) is provided with a semi-circular recess (6).

4. The device for preventing pellet cracking during roasting according to claim 2, characterized in that, The receiving cylinder (4) is slidably provided with a lower connecting plate (7), which is located below the lower support plate (5). The lower end of the lifting column (2) is fixedly provided on the lower connecting plate (7).

5. The device for preventing pellet cracking during roasting according to claim 2, characterized in that, A truss (8) is fixedly installed on the fixed frame (1), and the material picking component is horizontally slidably installed on the truss (8).

6. The device for preventing pellet cracking during roasting according to claim 5, characterized in that, The material taking component includes a sliding plate (9), which is slidably disposed on the truss (8). A material taking cylinder (10) is fixedly disposed on the lower end face of the sliding plate (9). An upper support plate (11) is fixedly disposed inside the material taking cylinder (10). The material taking needle (3) is slidably disposed on the upper support plate (11).

7. The device for preventing pellet cracking during roasting according to claim 6, characterized in that, An upper connecting plate (12) is slidably disposed inside the feeding cylinder (10). The upper connecting plate (12) is located above the upper support plate (11), and the upper end of the feeding needle (3) is fixedly disposed on the upper connecting plate (12).

8. The device for preventing pellet cracking during roasting according to claim 6, characterized in that, A baffle (13) is rotatably provided at the lower end of the material receiving cylinder (10).

9. The device for preventing pellet cracking during roasting according to claim 1, characterized in that, It also includes a conveying assembly, which includes a discharge cylinder (14) fixedly mounted on the fixed frame (1), a plurality of discharge pipes (15) fixedly mounted inside the discharge cylinder (14), and a discharge bag (16) connected to the lower end of the discharge pipe (15). The discharge bag (16) is made of flexible material, and a conveyor (17) is provided below the discharge bag (16).

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