Variable pitch ball press for spheroidizing

Abstract

This utility model discloses a variable-pitch briquetting device for smelting and briquetting, comprising a feeding assembly, a briquetting assembly, and a storage assembly. The briquetting assembly includes a first pressure roller, a second pressure roller, and a push rod. The first and second pressure rollers are arranged side-by-side with a gap to form a briquetting gap. The push rod is fixedly connected to the second pressure roller. Under external force, the push rod can drive the second pressure roller to move away from or towards the first pressure roller to adjust the width of the briquetting gap. The discharge port of the feeding assembly is arranged towards the briquetting gap, and the feed end of the storage assembly is arranged towards the briquetting gap. This utility model improves the adaptability, briquetting rate, and briquetting effect of the device.

Description

Technical Field

[0001] This utility model relates to the field of briquetting device technology, specifically a variable-pitch briquetting device for smelting and briquetting. Background Technology

[0002] In metal smelting, briquetting devices are commonly used to pelletize prepared ore. After being compressed into pellets, the ore has uniform particle size and a certain strength, preventing powdery materials from clogging blast furnace passages and facilitating the uniform distribution of gases (such as reducing gas and hot blast) and temperature within the furnace. However, existing briquetting devices generally use two pressure rollers with a fixed spacing to compress the briquettes through bidirectional rotation. This has the following shortcomings: 1. Different materials require different pressures, but the pressure provided by the fixed-spacing rollers is constant, failing to meet the needs of materials with diverse properties, resulting in insufficient adaptability; 2. Even for the same material, the pelletizing rate and effect are high in the initial stages of use, but as the pressure rollers wear down over time, the gap between the two rollers widens, affecting the compression of the material and increasing the probability of incomplete pelletizing. This leads to a significant decrease in the pelletizing rate and effect, resulting in a large number of defective products. Utility Model Content

[0003] To address the shortcomings of the existing technology, this utility model proposes a variable-pitch briquetting device for smelting and briquetting, which solves the technical problems of insufficient adaptability of existing briquetting devices using fixed-pitch rollers and the decline in briquetting rate and effect after long-term use.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0005] This utility model provides a variable-distance briquetting device for smelting and briquetting, comprising:

[0006] The ball pressing assembly includes a first pressure roller, a second pressure roller, and a push rod. The first and second pressure rollers are arranged side by side with a gap to form a pressing gap. The push rod is fixedly connected to the second pressure roller. Under the action of external force, the push rod can drive the second pressure roller to move away from or towards the first pressure roller to adjust the width of the pressing gap.

[0007] A feeding assembly, wherein the outlet of the feeding assembly is arranged toward the pressing gap;

[0008] A material storage assembly, wherein the feed end of the material storage assembly is arranged facing the pressing gap, is used to store finished products.

[0009] In some embodiments, the ball-pressing assembly further includes a first driving member, which is kinetically connected to the push rod.

[0010] In some embodiments, a pre-compression component is further included, wherein the feed and discharge of the pre-compression component are respectively connected to the feeding component and the briquetting component, and are used to pre-compress the powder before it enters the briquetting component.

[0011] In some embodiments, the pre-compression assembly includes a material cylinder, a screw rod, and a second driving member. The inlet and outlet of the material cylinder are respectively connected to the feeding assembly and the ball-pressing assembly. The diameter of the material cylinder gradually decreases from the end near its inlet to the end away from its inlet. The screw rod is vertically arranged in the material cylinder. The second driving member is fixed to the top of the material cylinder and is drively connected to the screw rod.

[0012] In some embodiments, the outer diameter of the screw gradually decreases from the end near the feed inlet of the barrel to the end away from the feed inlet.

[0013] In some embodiments, a screening component is further included, wherein the feed of the screening component is connected to the discharge of the briquetting component, and the discharge of the screening component is connected to the feed of the feeding component and the storage component, respectively, for separating qualified products.

[0014] In some embodiments, the screening assembly includes a first screen, a second screen, a feed pan, and a vibrator. The feed inlet of the feed pan is connected to the discharge outlet of the briquetting assembly. The first screen and the second screen are arranged in two layers in the feed pan. The first screen is close to the feed inlet of the feed pan and the mesh size of the first screen is larger than that of the second screen. The vibrator is disposed on one side of the feed pan and is in contact with the first screen.

[0015] In some embodiments, the feeding assembly includes a raw material silo, a bucket elevator, and a first conveyor belt. The feeding and unloading of the first conveyor belt are respectively connected to the raw material silo and the bucket elevator, and the discharge of the bucket elevator is located above the first pressure roller and the second pressure roller.

[0016] In some embodiments, the material storage assembly includes a finished product hopper and a second conveyor belt, wherein the feeding and unloading of the second conveyor belt are respectively connected to the briquetting assembly and the finished product hopper.

[0017] Compared with the prior art, the beneficial effects of this utility model mainly include:

[0018] This utility model provides a variable-pitch briquetting device for smelting and briquetting. The briquetting assembly includes a first pressure roller, a second pressure roller, and a push rod. The push rod is fixedly connected to the second pressure roller. Under external force, the push rod can drive the second pressure roller to move away from or towards the first pressure roller, thus adjusting the distance between the two rollers. This variable-pitch design can meet the pressure requirements of different materials, improving the adaptability of the device. Furthermore, when the pressure rollers wear down after prolonged use, increasing the distance between them, the distance can be adjusted to restore the device to its initial performance, improving the briquetting rate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the briquetting device described in this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the ball-pressing assembly described in this utility model;

[0021] Figure 3 This is a schematic diagram illustrating the working principle of the ball-pressing assembly described in this utility model;

[0022] Figure 4 This is a schematic diagram of the pre-compression component described in this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the screening component described in this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100. Feeding assembly; 110. Raw material silo; 120. Bucket elevator; 130. First conveyor belt;

[0026] 200, ball pressing assembly; 210, first pressure roller; 220, second pressure roller; 230, push rod; 240, bracket;

[0027] 300. Material storage assembly; 310. Second conveyor belt; 320. Finished product silo.

[0028] 400. Pre-compression assembly; 410. Screw rod; 420. Barrel; 430. Second drive component;

[0029] 500. Screening assembly; 510. First screen; 520. Second screen; 530. Feeding tray. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] This invention addresses the technical problems of insufficient adaptability and decreased pelletizing rate and effect of existing pelletizing devices. It proposes a variable-distance pelletizing device for smelting pelletizing, which can improve the adaptability of the device and ensure the pelletizing effect.

[0032] like Figure 1 As shown, this utility model is a variable-pitch briquetting device for smelting and briquetting, including a feeding assembly 100, a briquetting assembly 200 and a storage assembly 300.

[0033] The feeding assembly 100 is used to transport materials from the hopper to the feed inlet of the briquetting assembly 200; for example... Figure 2 and Figure 3 As shown, the ball-forming assembly 200 includes a first pressure roller 210, a second pressure roller 220, and a push rod 230. The first pressure roller 210 and the second pressure roller 220 are arranged side by side with a gap to form a pressing gap. The discharge port of the feeding assembly 100 is arranged towards the pressing gap so that the material is delivered precisely between the first pressure roller 210 and the second pressure roller 220, facilitating the pressing into balls. The push rod 230 is fixedly connected to the second pressure roller 220. Under the action of external force, the push rod 230 can drive the second pressure roller 220 to move away from or towards the first pressure roller 210 to adjust the width of the pressing gap. The feeding end of the storage assembly 300 is arranged towards the pressure gap and is used to store the finished product.

[0034] The variable-pitch briquetting device for smelting and briquetting provided by this utility model, when in use, conveys the material to the feeding end of the briquetting assembly 200 through the feeding assembly 100, and briquetting the material into briquettes through the rotation and extrusion of the first pressure roller 210 and the second pressure roller 220. The briquettes are then conveyed to the storage assembly 300 for storage. During this process, since the push rod 230 is fixedly connected to the second pressure roller 220, under the action of external force, the push rod 230 can drive the second pressure roller 220 to move away from or towards the first pressure roller 210. That is, the distance between the first pressure roller 210 and the second pressure roller 220 can be adjusted. Thus, when pelletizing different types of powders, the distance between the first pressure roller 210 and the second pressure roller 220 can be adjusted according to the required pressure, so that the device can adapt to different materials and improve the adaptability of the device. At the same time, even for the same material, when the pressure rollers wear and the gap increases after long-term use, this invention can restore the device to the pelletizing effect at the beginning of use by adjusting the distance between the first pressure roller 210 and the second pressure roller 220, thus ensuring the pelletizing rate of the device.

[0035] It should be noted that the ability of the push rod 230 to move under external force in this utility model means that the push rod 230 moves under human force or under the drive of existing drive equipment. However, when moving the push rod 230 by human force, it is necessary to lock the push rod 230 to the target position. Therefore, this utility model preferably allows the push rod 230 to move under the drive of drive equipment.

[0036] In one embodiment, the ball-pressing assembly 200 may further include a first driving member, which is throttle-connected to the push rod 230. In this embodiment, the push rod 230 is a rod, and the first driving member may be a motor, a cylinder, or a hydraulic cylinder. The push rod 230 extends and retracts under the drive of the first driving member.

[0037] In one embodiment, the ball pressing assembly 200 further includes a bracket 240 for mounting a first pressure roller 210, a second pressure roller 220, a push rod 230, and a first drive member.

[0038] In this embodiment, the first pressure roller 210 and the second pressure roller 220 are the same size. During operation, the push rod 230 pushes the second pressure roller 220 to a position with a fixed gap from the first pressure roller 210 according to the material properties and continuously provides pushing force to it. This ensures that the distance between the first pressure roller 210 and the second pressure roller 220 is not increased due to material compression during the pellet pressing process. When the material changes, the distance between the first pressure roller 210 and the second pressure roller 220 can be readjusted by the push rod 230. Furthermore, the variable distance between the first pressure roller 210 and the second pressure roller 220 is 2 to 8 cm, and the original pressure roller spacing can be designed according to different pellet size requirements, improving the adaptability of the pellet pressing device to different raw materials and different particle size requirements.

[0039] In one embodiment, such as Figure 1 As shown, the feeding assembly 100 includes a raw material bin 110, a bucket elevator 120, a first conveyor belt 130, and a first frame 140. The feeding and unloading of the first conveyor belt 130 are respectively connected to the raw material bin 110 and the bucket elevator 120. The discharge of the bucket elevator 120 is located above the first pressure roller 210 and the second pressure roller 220.

[0040] In one embodiment, the material storage assembly 300 includes a second conveyor belt 310 and a finished product bin 320, with the loading and unloading of the second conveyor belt 310 respectively connected to the briquetting assembly 200 and the finished product bin 320.

[0041] In one embodiment, since conventional briquetting machines often feed various materials and minerals in a loose, pressureless manner via belt, bucket elevator, or pneumatic conveying, which is not conducive to briquetting, the briquetting device of this invention further includes a pre-compression component 400. The feed and discharge of the pre-compression component 400 are respectively connected to the feeding component 100 and the briquetting component 200, and are used to pre-compress the powder before it enters the briquetting component 200.

[0042] In one embodiment, such as Figure 4 As shown, the pre-compression assembly 400 includes a screw rod 410, a material cylinder 420, and a second driving member 430. The inlet and outlet of the material cylinder 420 are respectively connected to the feeding assembly 100 and the ball pressing assembly 200. The diameter of the material cylinder 420 gradually decreases from the end near its inlet to the end away from its inlet. The screw rod 410 is vertically arranged in the material cylinder 420. The second driving member 430 is fixed to the top of the material cylinder 420 and is connected to the screw rod 410 in a transmission manner.

[0043] In one embodiment, the outer diameter of the screw 410 gradually decreases from the end near the feed inlet 420 of the barrel to the end away from the feed inlet.

[0044] In this embodiment, since the screw rod 410 is a downward-facing tapered variable-diameter screw, the material entering the material cylinder 420 is squeezed downward by the rotation of the screw rod 410 to achieve a pre-compression effect, which compresses the bulk material and helps with subsequent pelletizing.

[0045] In this embodiment, the radius of the screw rod 410 is designed according to the equipment capacity and material characteristics. The distance between the top of the screw rod 410 and the bottom of the first pressure roller 210 and the second pressure roller 220 is 5-10cm, and the distance between the screw rod 410 and the cylinder wall of the material cylinder 420 is 1-2cm.

[0046] In one embodiment, conventional briquetting machines have a certain probability of failing to form briquettes, resulting in substandard powder or fragments that cannot meet the requirements of the next process. Therefore, the variable-distance briquetting device for smelting briquettes of this invention further includes a screening component 500. The feed of the screening component 500 is connected to the discharge of the briquetting component 200, and the discharge of the screening component 500 is connected to the feed of the feeding component 100 and the feeding of the storage component 300, respectively, for separating qualified products.

[0047] In one embodiment, such as Figure 5 As shown, the screening component 500 includes a first screen 510, a second screen 520, a feed tray 530, and a vibrator. The feed inlet of the feed tray 530 is connected to the discharge outlet of the briquetting component 200. The first screen 510 and the second screen 520 are arranged in two layers in the feed tray 530. The first screen 510 is close to the feed inlet of the feed tray 530, and the mesh size of the first screen 510 is larger than that of the second screen 520. The vibrator is located on one side of the feed tray 530 and is in contact with the first screen 510.

[0048] In this embodiment, through the vibration of the vibrator, qualified products roll down through the first screen 510 to enter the next process, while unqualified products fall through the first screen 510 into the second screen 520. The unqualified products on the second screen 520 return to the feeding component 100 to re-enter the pre-pressing component 400 and the ball-forming component 200, thus improving the ball-forming rate of the ball-forming device.

[0049] In summary, the variable-pitch briquetting device for smelting and briquetting provided by this utility model can adapt to different materials through the variable-pitch briquetting component 200, thus improving the adaptability of the device; the pre-compression component 400 can pre-compress and compact the material before it enters the briquetting component 200, which is beneficial for briquetting and improves the briquetting rate; the screening component 500 can return unqualified products to the feeding component 100 for re-briquetting, thus reducing the defect rate.

[0050] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A variable-pitch briquetting device for smelting and briquetting, characterized in that, include: The ball pressing assembly includes a first pressure roller, a second pressure roller, and a push rod. The first and second pressure rollers are arranged side by side with a gap to form a pressing gap. The push rod is fixedly connected to the second pressure roller. Under the action of external force, the push rod can drive the second pressure roller to move away from or towards the first pressure roller to adjust the width of the pressing gap. A feeding assembly, wherein the outlet of the feeding assembly is arranged toward the pressing gap; A material storage assembly, wherein the feed end of the material storage assembly is arranged facing the pressing gap, is used to store finished products.

2. The variable-pitch briquetting device for smelting briquetting according to claim 1, characterized in that, The ball-pressing assembly also includes a first driving member, which is connected to the push rod in a transmission manner.

3. The variable-pitch briquetting device for smelting briquetting according to claim 1, characterized in that, It also includes a pre-compression component, whose feed and discharge are respectively connected to the feeding component and the briquetting component, and is used to pre-compress the powder before it enters the briquetting component.

4. The variable-pitch briquetting device for smelting briquetting according to claim 3, characterized in that, The pre-compression assembly includes a material cylinder, a screw rod, and a second driving component. The material cylinder's inlet and outlet are respectively connected to the feeding assembly and the ball-pressing assembly. The diameter of the material cylinder gradually decreases from the end near its inlet to the end away from its inlet. The screw rod is vertically arranged in the material cylinder. The second driving component is fixed to the top of the material cylinder and is drively connected to the screw rod.

5. The variable-pitch briquetting device for smelting briquetting according to claim 4, characterized in that, The outer diameter of the screw gradually decreases from the end closest to the feed inlet of the barrel to the end furthest from the feed inlet.

6. The variable-pitch briquetting device for smelting briquetting according to claim 1, characterized in that, It also includes a screening component, the feed of which is connected to the discharge of the briquetting component, and the discharge of which is connected to the feed of the feeding component and the storage component, respectively, for separating qualified products.

7. The variable-pitch briquetting device for smelting briquetting according to claim 6, characterized in that, The screening assembly includes a first screen, a second screen, a feed pan, and a vibrator. The feed inlet of the feed pan is connected to the discharge outlet of the briquetting assembly. The first screen and the second screen are arranged in two layers in the feed pan. The first screen is close to the feed inlet of the feed pan and the mesh size of the first screen is larger than that of the second screen. The vibrator is located on one side of the feed pan and is in contact with the first screen.

8. The variable-pitch briquetting device for smelting briquetting according to claim 1, characterized in that, The feeding assembly includes a raw material silo, a bucket elevator, and a first conveyor belt. The feeding and unloading of the first conveyor belt are respectively connected to the raw material silo and the bucket elevator. The discharge of the bucket elevator is located above the first pressure roller and the second pressure roller.

9. The variable-pitch briquetting device for smelting briquetting according to claim 1, characterized in that, The material storage assembly includes a finished product hopper and a second conveyor belt, with the feeding and unloading of the second conveyor belt connected to the briquetting assembly and the finished product hopper, respectively.

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