Unpowered plow-type spreading device

Abstract

The utility model discloses a no power plough shape material leveling device belongs to material leveling equipment technical field. The technical problem such as the discontinuity and the instability of the electromagnetic iron -attracting ware that the material layer thickness uneven on the belt, the material thickness uneven caused can not effectively remove metal impurity and the furnace front feeding is solved. No power plough shape material leveling device, including first fixed frame, second fixed frame, third fixed frame, fourth fixed frame, plough material ware and squeegee, through the plough material ware of different height suspension on crossbeam, the plough of different height material, then utilize squeegee and collect the material of the conveyer belt edge inward, avoid material overflow. The utility model takes no power plough shape material leveling device, simple structure, convenient installation, and plough material ware is connected on crossbeam through clamping piece, and through the natural droop of self weight, satisfy the plough of different height material, and the whole device does not need external power source, realize the plough operation of material, energy -conserving and environment -friendly, applicable to various belt type conveying system.

Description

Technical Field

[0001] This utility model relates to the field of material leveling equipment technology, specifically the non-powered plow-shaped material leveling device. Background Technology

[0002] In the current biomass power generation field, the stable operation of the feeding system is directly related to the power plant's power generation efficiency and equipment safety. The existing feeding process of biomass power plants mainly relies on a feeding screw to push biomass materials to a conveyor belt, and then the conveyor belt transports the materials to the feeding system in front of the boiler (i.e., boiler-front feeding). During this process, the conveyed materials need to undergo a process to remove metal impurities. In order to remove any metal impurities that may be mixed in the materials, they need to pass through an electromagnetic separator in front of the boiler, thereby ensuring the safety of subsequent equipment.

[0003] However, this traditional feeding method has significant technical drawbacks. The thickness of the material layer on the conveyor belt exhibits extreme unevenness. In actual operation, the thickness of the material layer fluctuates wildly, with the minimum thickness reaching 0cm (i.e., no material in some areas) and the maximum thickness reaching 70cm (i.e., excessive material in some areas). This difference in material thickness triggers a series of chain problems: On the one hand, to ensure the iron removal effect of the electromagnetic separator, the distance between it and the conveyor belt needs to be set according to the maximum thickness of the material layer to avoid collisions with the separator due to excessive material thickness. However, this can lead to uneven material distribution. In areas with thinner material layers, the distance between the iron remover and the conveyor belt is too large, making it impossible to effectively adsorb shallow or closer metal impurities, severely affecting iron removal efficiency and potentially causing equipment damage due to metal impurities entering subsequent equipment. On the other hand, the furnace front feeding system has certain controllable requirements for the receiving volume, and drastic fluctuations in the material layer thickness will cause the amount of raw material delivered to the furnace front per unit time to vary greatly, exceeding the stable receiving range of the furnace front feeding system. This will not only affect the continuity and stability of boiler feeding but may also lead to a decrease in boiler combustion efficiency due to raw material accumulation or insufficient supply, or even serious consequences such as shutdown. Utility Model Content

[0004] To address the technical problems of uneven material layer thickness on conveyor belts, the inability of electromagnetic separators to effectively remove metal impurities due to uneven material thickness, and the discontinuity and instability of feeding at the furnace, this utility model proposes a non-powered plow-shaped material leveling device.

[0005] To solve the above-mentioned technical problems, the specific technical solution of this utility model is as follows:

[0006] Non-powered plow-shaped material leveling device, such as Figure 1 As shown, it includes a first fixed frame 1, a second fixed frame 2, a third fixed frame 3, a fourth fixed frame 4, a plow and a scraper 11;

[0007] The first fixed frame 1 has a first crossbeam 5 at its top. The first crossbeam 5 is fixed to the first fixed frame 1 by means of a slot insertion. Two clamping plates 10 are fixed in the middle of the first crossbeam 5 by welding. The plow is suspended in the two clamping plates 10 by bolts. After the plow is suspended, the vertical distance between its bottom end and the conveyor belt is 70cm to 80cm, so that the plow can swing forward or backward at a fixed angle to plow and level materials with a material layer thickness of more than 60cm.

[0008] The top of the second fixed frame 2 is provided with a second crossbeam 6. The second crossbeam 6 is fixed to the second fixed frame 2 by means of a slot insertion. Two clamping plates 10 are fixed in the middle of the second crossbeam 6 by welding. The plow is suspended in the two clamping plates 10 by bolts. After the plow is suspended, the vertical distance between its bottom end and the conveyor belt is 50cm to 60cm, so that the plow can swing forward or backward at a fixed angle to plow and level materials with a material layer thickness of more than 40cm.

[0009] The top of the third fixed frame 3 is provided with a third crossbeam 7. The third crossbeam 7 is fixed to the third fixed frame 3 by means of a slot insertion. Two clamping plates 10 are fixed in the middle of the third crossbeam 7 by welding. The plow is suspended in the two clamping plates 10 by bolts. After the plow is suspended, the vertical distance between its bottom end and the conveyor belt is 30cm to 40cm, so that the plow can swing forward or backward at a fixed angle to plow and level materials with a material layer thickness of more than 20cm.

[0010] The top of the fourth fixed frame 4 is provided with a fourth crossbeam 8. The fourth crossbeam 8 is fixed to the fourth fixed frame 4 by means of a slot insertion. The fourth crossbeam 8 is vertically positioned 20cm to 25cm above the conveyor belt that conveys materials. Scrapers 11 are fixed on both sides of the fourth crossbeam 8. The scrapers 11 are used to clean the materials on both edges of the conveyor belt.

[0011] The beneficial effects of this utility model are as follows: This utility model proposes a non-powered plow-shaped material leveling device. The first, second, third, and fourth crossbeams are all connected to the corresponding fixed frames by a slotted connection, resulting in a simple structure and convenient installation. Furthermore, each crossbeam is at the same height above the conveyor belt, allowing for adjustment of the plow's suspension height according to actual working needs, thus achieving height adjustment to adapt to different working conditions. The plow is movably connected to the crossbeams via clamping plates and bolts, facilitating the replacement of worn parts. The plow, indirectly connected to the crossbeams via clamping plates, hangs naturally under its own weight, forming a weighted pendulum-type plow. Due to the different suspension heights of the plow, it can level materials of varying heights, while also gradually leveling areas with thicker material layers. This ensures no material breaks or excessively thick material accumulation on the entire conveyor belt, guaranteeing the uniformity of material thickness and ensuring continuous and stable material reception by the boiler, avoiding... This system prevents boiler shutdowns caused by clogging of the feedstock. The plow, clamping plates, and crossbeam mutually constrain each other, maintaining a fixed angle between the plow and the crossbeam to avoid ineffective plowing caused by the plow approaching the crossbeam too closely. A wear-resistant layer is welded onto the high-carbon steel plate of the plow head to increase its wear resistance and weight, resulting in more effective plowing and extended plow head lifespan. High-polymer wing plates are detachably bolted to both wings of the high-carbon steel plate, reducing material spillage during plowing. The plowed material is then conveyed to the boiler via a scraper, which collects any spillage onto the conveyor belt edge, effectively preventing material accumulation and reducing maintenance frequency. The entire system requires no external power source, relying on the plow's own weight and the conveyor belt's movement to plow the material, making it energy-efficient, environmentally friendly, and suitable for various belt conveyor systems.

[0012] The non-powered plow-shaped material leveling device proposed in this utility model also achieves additional technical benefits. Typically, materials conveyed on the feed conveyor belt in front of a boiler need to pass through an electromagnetic separator located above the boiler to remove metal impurities before entering the boiler. However, before leveling, the material distribution and thickness on the conveyor belt are uneven. The electromagnetic separator needs to be set at a height higher than the maximum height of the accumulated material to effectively remove metal impurities from the material of varying thicknesses on the conveyor belt. Therefore, for thinner areas of material, the electromagnetic separator's excessive height results in poor removal of metal impurities; for thicker areas of material, the electromagnetic separator... Electromagnetic separators cannot remove metal impurities accumulated at the bottom of materials. Whether the material is too thick or too thin, the installation height of the electromagnetic separator reduces its efficiency in removing metal impurities, leading to more metal entering the boiler and affecting its operating efficiency. Therefore, by installing the plow-shaped material leveling device of this invention above the conveyor belt, unevenly distributed and thickened materials are leveled, ensuring a uniform thickness and distribution on the conveyor belt. This reduces the height of the electromagnetic separator installed above the boiler, allowing it to be slightly higher than the thickness of the leveled material. This improves the efficiency of the electromagnetic separator in removing metal impurities from the material and reduces the amount of metal impurities entering the boiler. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the non-powered plow-shaped leveling device of this utility model, and is also included as an abstract drawing.

[0014] Figure 2 This is a schematic diagram of the plow in the non-powered plow-shaped leveling device of this utility model.

[0015] Figure 3 This is a schematic diagram of the fourth fixed frame in the non-powered plow-shaped flat material device of this utility model. Detailed Implementation

[0016] The present invention will be further described below.

[0017] like Figure 1 As shown, the fixed distances between the first fixed frame 1 and the second fixed frame 2, the second fixed frame 2 and the third fixed frame 3, and the third fixed frame 3 and the fourth fixed frame 4 are 1.0m to 1.5m; and the distance between the fourth fixed frame 4 and the boiler is 1.0m to 2.0m.

[0018] More preferably, the fixed distance between the first fixed frame 1 and the second fixed frame 2, the second fixed frame 2 and the third fixed frame 3, the third fixed frame 3 and the fourth fixed frame 4 is 1.2m, and the distance between the fourth fixed frame 4 and the boiler is 1.5m. In addition, the distances between the first fixed frame 1 and the second fixed frame 2, the second fixed frame 2 and the third fixed frame 3, the third fixed frame 3 and the fourth fixed frame 4, and the fourth fixed frame 4 and the boiler can be adjusted according to the actual working needs to meet different usage requirements.

[0019] The first crossbeam (5), the second crossbeam (6), and the third crossbeam (7) are at the same height. By adjusting the different positions of the connecting rod 9 in the plowing device connected by the bolts inside the clamping plate 10, the height of the plowing device from the conveyor belt can be adjusted to meet the needs of plowing materials with different stacking thicknesses.

[0020] like Figure 1 and Figure 2 As shown, the plow includes a connecting rod 9 and a plow head. The connecting rod 9 is movably connected to the clamping plate 10 by bolts, and the lower end of the connecting rod 9 is fixed to the plow head by welding. A fall arresting chain 13 is fixed to the connecting rod 9, which movably connects the connecting rod 9 to the first crossbeam 5, the connecting rod 9 to the second crossbeam 6, and the connecting rod 9 to the third crossbeam 7. The plow is connected by the clamping plate 10 and the fall arresting chain 13. This double connection prevents the plow from accidentally falling off and causing material obstruction or being transferred into the boiler, which could lead to equipment failure. Even if the plow falls off during use, it will be suspended on the corresponding crossbeam by the fall arresting chain 13, providing double protection for the plow.

[0021] The plowshare comprises a high-carbon steel plate 1201 and a wing plate 1203; wherein, the back surface of the high-carbon steel plate 1201 is fixed to the connecting rod 9 by welding, and the front surface of the high-carbon steel plate 1201 is overlaid with a 3mm to 5mm thick wear-resistant layer 1202, preferably, the front surface of the high-carbon steel plate 1201 is overlaid with a 4mm thick wear-resistant layer 1202; wherein, the wear-resistant layer 1202 is an overlaid welding rod with a Cr element content of 12% to 18%; the wing plates 1203 are detachably connected to both wings of the high-carbon steel plate 1201 by bolts, and the material of the wing plates 1203 is polyethylene.

[0022] like Figure 3 As shown, the scraper 11 includes an iron plate 1101 and a polymer wear-resistant plate 1102. The top cross-section of the iron plate 1101 is welded to the fourth crossbeam 8, and the bottom cross-section of the iron plate 1101 is fixedly connected to the polymer wear-resistant plate 1102 by bolts. The polymer wear-resistant plate 1102 is made of polyethylene. There are two scrapers 11, and the ends of the scrapers 11 near the boiler are both inclined inward at an inward inclination angle θ of 5° to 10°, preferably 8°.

[0023] The working principle of this utility model is as follows: The first, second, third, and fourth fixed frames are sequentially bolted to the conveyor belt frame along the conveyor belt's conveying direction. The fixed distances between the first and second fixed frames, the second and third fixed frames, and the third and fourth fixed frames are 1.2m, and the distance between the fourth fixed frame and the boiler is 1.5m. Then, the first crossbeam and plow, the second crossbeam and plow, the third crossbeam and plow, and the fourth crossbeam and scraper are sequentially inserted into the first, second, third, and fourth fixed frames via slots. The plow is suspended by bolts within two clamping plates on the first crossbeam, so that the vertical distance between the bottom of the plow and the conveyor belt is 75cm. The plow is suspended within two clamping plates on the second crossbeam, so that the vertical distance between the bottom of the plow and the conveyor belt is 55cm. Two clamping plates suspended on the third crossbeam ensure a 35cm vertical distance between the bottom of the plow and the conveyor belt. The fourth crossbeam is positioned vertically 20cm above the conveyor belt. After the material is pushed onto the conveyor belt by the feeding screw, it is transported into the boiler. During this process, the material is successively plowed by the plows on the first, second, and third crossbeams, ensuring the material on the conveyor belt is at the same height and evenly distributed. The plowed material then passes through scrapers on the fourth crossbeam, which gather any material that has fallen to the edge of the conveyor belt. The uniform and thin thickness of the plowed material allows the electromagnetic separator in front of the boiler to be lowered, closer to the conveyor belt, and with stronger magnetic force, resulting in more complete removal of metallic impurities from the material on the conveyor belt. Finally, the purified material is transported into the boiler.

Claims

1. A non-powered plow-shaped material leveling device, characterized in that, It includes a first fixed frame (1), a second fixed frame (2), a third fixed frame (3), a fourth fixed frame (4), a plow and a scraper (11); The first fixed frame (1) is provided with a first crossbeam (5) at the top. The first crossbeam (5) is fixed on the first fixed frame (1) by means of slot insertion. Two clamping plates (10) are fixed in the middle position of the first crossbeam (5) by welding. The plow is suspended in the two clamping plates (10) by bolts. After the plow is suspended, the vertical distance between its bottom end and the conveyor belt is 70cm to 80cm, so that the plow can swing forward or backward at a fixed angle to plow materials with a layer thickness of more than 60cm. The top of the second fixed frame (2) is provided with a second crossbeam (6). The second crossbeam (6) is fixed on the second fixed frame (2) by means of slot insertion. Two clamping plates (10) are fixed in the middle position of the second crossbeam (6) by welding. The plow is suspended in the two clamping plates (10) by bolts. After the plow is suspended, the vertical distance between its bottom end and the conveyor belt is 50cm to 60cm, so that the plow can swing forward or backward at a fixed angle to plow materials with a layer thickness of more than 40cm. The top of the third fixed frame (3) is provided with a third crossbeam (7). The third crossbeam (7) is fixed to the third fixed frame (3) by means of slot insertion. Two clamping plates (10) are fixed in the middle of the third crossbeam (7) by welding. The plow is suspended in the two clamping plates (10) by bolts. After the plow is suspended, the vertical distance between its bottom end and the conveyor belt is 30cm to 40cm, so that the plow can swing forward or backward at a fixed angle to plow materials with a layer thickness of more than 20cm. The top of the fourth fixed frame (4) is provided with a fourth crossbeam (8). The fourth crossbeam (8) is fixed on the fourth fixed frame (4) by means of slot insertion. The fourth crossbeam (8) is vertically set 20cm to 25cm above the conveyor belt that conveys materials. Scrapers (11) are fixed on both sides of the fourth crossbeam (8). The scrapers (11) are used to clean the materials on both edges of the conveyor belt.

2. The non-powered plow-shaped leveling device according to claim 1, characterized in that, The fixed distance between the first fixed frame (1) and the second fixed frame (2), the second fixed frame (2) and the third fixed frame (3), and the third fixed frame (3) and the fourth fixed frame (4) is 1.0m to 1.5m.

3. The non-powered plow-shaped leveling device according to claim 1, characterized in that, The first crossbeam (5), the second crossbeam (6), and the third crossbeam (7) are at the same height.

4. The non-powered plow-shaped leveling device according to claim 1, characterized in that, The plow includes a connecting rod (9) and a plow head. The connecting rod (9) is movably connected to the clamping plate (10) by bolts, and the lower end of the connecting rod (9) is fixed to the plow head by welding.

5. The non-powered plow-shaped leveling device according to claim 4, characterized in that, A fall arresting chain (13) is fixedly attached to the connecting rod (9), and the connecting rod (9) is movably connected to the first crossbeam (5), the connecting rod (9) to the second crossbeam (6), and the connecting rod (9) to the third crossbeam (7) through the fall arresting chain (13).

6. The non-powered plow-shaped leveling device according to claim 4, characterized in that, The plowshare includes a high-carbon steel plate (1201) and a wing plate (1203); the back surface of the high-carbon steel plate (1201) is fixed to the connecting rod (9) by welding, the front surface of the high-carbon steel plate (1201) is overlaid with a 3mm to 5mm thick wear-resistant layer (1202), and the wing plates (1203) are detachably connected to both wings of the high-carbon steel plate (1201) by bolts.

7. The non-powered plow-shaped leveling device according to claim 6, characterized in that, The wear-resistant layer (1202) is a welding electrode with a Cr content of 12% to 18% for overlay welding.

8. The non-powered plow-shaped leveling device according to claim 6, characterized in that, The wing plate (1203) is made of polyethylene.

9. The non-powered plow-shaped leveling device according to claim 1, characterized in that, The scraper (11) includes an iron plate (1101) and a polymer wear-resistant plate (1102). The top cross section of the iron plate (1101) is welded to the fourth crossbeam (8), and the bottom cross section of the iron plate (1101) is fixedly connected to the polymer wear-resistant plate (1102) by bolts.

10. The non-powered plow-shaped leveling device according to claim 9, characterized in that, The material of the polymer wear-resistant plate (1102) is polyethylene.

Images