Anti-scattering structure of coal grate
By designing a material frame and inclined guide plate above the coal grate, the problem of coal blocks falling outward without screening is solved, achieving effective screening and anti-spillage of coal blocks.
Patent Information
- Application Number
- CN202423012771.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-06
AI Technical Summary
During the use of coal grates, small pieces of coal are ejected directly outwards without being screened or are scattered outwards by vibration.
A material frame is installed above the coal grate, and inclined guide plates are installed around the inside of the material frame so that the coal blocks bounce inward after hitting the guide plates. Combined with the connecting plate and bolt fixing structure, the coal blocks are prevented from falling outward.
It effectively prevents small coal pieces from popping out or spilling without screening, and large coal pieces from shifting outwards during vibration, thus achieving effective screening and preventing spillage of coal pieces.
Smart Images
Figure CN223888432U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coal grate technology, specifically to a coal grate anti-spillage structure. Background Technology
[0002] Coal unloading at thermal power plants typically uses tippers. After unloading the coal from the train, it passes through a grid of coal grates to remove large debris before falling into the feeder's inlet. The feeder then picks up the coal and transports it to the coal yard or the power unit via a belt conveyor. In the tipper system, the vibrating coal grate, driven by a vibrating motor, causes the raw material accumulated on the grate to fall smoothly through the grid holes into the storage bin below.
[0003] In practical use, when coal falls onto the surface of the coal grate, some small pieces of coal may fall near the outer edge. These small pieces may be ejected directly outwards without being screened by the grate, or they may be vibrated and spill outwards. Therefore, we propose a structure to prevent coal grate spillage. Utility Model Content
[0004] The purpose of this utility model is to provide a structure to prevent coal grates from spilling. By fixing the material frame at a certain height above the grate body and setting a surrounding and inclined guide plate inside the material frame, when coal blocks fall, the coal blocks located at the edge hit the surface of the guide plate and bounce towards the inner side of the grate. This avoids the situation where small coal blocks are directly ejected or spilled outward by vibration without being screened by the coal grate during the vibrating screening process, thus solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal grate anti-spillage structure, comprising a grate body and a material frame, wherein a screen frame is welded and fixed inside the grate body, and the material frame is positioned directly above the grate body; multiple connecting plates are uniformly connected to the outer surface between the material frame and the grate body, and the connecting plates are fixed between the grate body and the material frame surface by bolts; the distance from the bottom of the material frame to all points on the upper surface of the grate body is the same; a guide plate is fixed around the inner ring surface of the material frame, and the guide plate is inclined downwards.
[0006] By adopting the above technical solution, after the grate body and its upper structure are installed in place, the whole is put into a vibrating state for use. Coal blocks are fed in through the hopper and the material frame. Under the action of the guide plate, the coal blocks fall on the surface of the grate body near the middle. Small coal blocks are not easy to leak from the edge or be ejected, which has a good spillage effect.
[0007] Optionally, a hopper is integrally connected to the top of the material frame, with the inner diameter of the hopper at the top being larger than the inner diameter of the material frame, and the inner diameter of the hopper at the bottom being equal to the inner diameter of the material frame.
[0008] By adopting the above technical solution, the hopper has a guiding function for the thrown coal blocks.
[0009] Optionally, the outer surface of the grate body is provided with mounting screw holes, and multiple mounting screw holes are evenly arranged.
[0010] By adopting the above technical solution, after the grate body is placed inside the bracket, the connecting bolts can be screwed through the bracket into the mounting screw holes to achieve its installation and fixation.
[0011] Optionally, the outer surface of the grate body and the outer surface of the material frame at the connecting plate are provided with plate grooves, and the two ends of the connecting plate are respectively inserted into the plate grooves on the surface of the grate body and the surface of the material frame.
[0012] By adopting the above technical solution, the connecting plate is placed in the plate groove, thus preventing the connecting plate from protruding from the outer surface of the grate body.
[0013] Optionally, the inner surface of the plate groove is provided with a locking screw hole, and the bolt is screwed into the locking screw hole after passing through the connecting plate.
[0014] Optionally, the surface of the connecting plate at the bolt connection is provided with a groove, the depth of which is greater than the height of the bolt nut.
[0015] By adopting the above technical solution, the bolt nut will not protrude to the outer surface of the connecting plate.
[0016] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:
[0017] 1. The technical solution of this application fixes the material frame at a certain height above the grate body and sets a surrounding and inclined guide plate inside the material frame. When the coal blocks fall, the coal blocks located at the edge hit the surface of the guide plate and bounce towards the inner side of the grate. This avoids the situation where small coal blocks are directly ejected or scattered by vibration without being screened by the coal grate during the vibrating screening process.
[0018] 2. The technical solution of this application is to install and fix the material frame above the grate body by means of connecting plate and bolts. When large coal blocks are stuck between the material frame and the grate body during use, the material frame can be removed for cleaning. Attached Figure Description
[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0020] Figure 1 This is a schematic diagram of the overall structure of the anti-spillage structure of the coal grate of this utility model;
[0021] Figure 2This is a schematic diagram of the grate body structure of the anti-spillage structure of the coal grate of this utility model;
[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the material frame of the anti-spillage structure of the coal grate of this utility model.
[0023] In the diagram: 1. Grate body; 11. Screen frame; 12. Mounting screw hole; 2. Material frame; 21. Guide plate; 22. Hopper; 3. Connecting plate; 31. Bolt; 32. Groove; 4. Plate groove; 41. Locking screw hole. Detailed Implementation
[0024] Please see Figure 1-3 This utility model provides a technical solution: a coal grate anti-spillage structure, including a grate body 1 and a material frame 2. A screen frame 11 is welded and fixed inside the grate body 1. The outer surface of the grate body 1 is provided with mounting screw holes 12, and multiple mounting screw holes 12 are evenly arranged. In use, the grate body 1 is placed inside the support of the vibrating device. Then, the connecting bolt can be screwed into the mounting screw hole 12 after passing through the support, and the grate body 1 is installed and fixed inside the support of the vibrating device. When the vibrating device drives the grate body 1 to vibrate, the screen frame 11 can be used to screen the coal blocks.
[0025] The material frame 2 is placed directly above the grate body 1, and multiple connecting plates 3 are evenly connected to the outer surface of the material frame 2 and the grate body 1. The connecting plates 3 are connected and fixed between the grate body 1 and the surface of the material frame 2 by bolts 31, so that the height of the upper surface of the grate body 1 from the bottom of the material frame 2 is the same. A guide plate 21 is fixed around the inner surface of the material frame 2. The guide plate 21 is inclined downward. When coal is put into the material frame 2, the coal near the edge will hit the surface of the guide plate 21 and bounce towards the middle of the grate body 1, thus preventing the coal from being placed on the outer edge of the grate body 1. This achieves screening of the grate body 1 and prevents small coal from falling outward. Large coal can be deflected outward during vibration and discharged from the gap between the grate body 1 and the material frame 2.
[0026] When installing the grate body 1, the outer surface of the grate body 1 needs to be in contact with the inner surface of the support. To prevent the grate body 1 from not being able to fit tightly against the inner surface of the support due to the presence of the connecting plate 3 and the bolt 31, the outer surface of the grate body 1 and the outer surface of the material frame 2 at the connecting plate 3 are provided with plate grooves 4. The two ends of the connecting plate 3 are respectively inserted into the plate grooves 4 on the surface of the grate body 1 and the surface of the material frame 2. The inner surface of the plate groove 4 is provided with locking screw holes 41. The bolt 31 passes through the connecting plate 3 and is screwed into the locking screw holes 41. At the same time, the surface of the connecting plate 3 at the connection of the bolt 31 is provided with a groove 32. The depth of the groove 32 is greater than the height of the nut of the bolt 31. When a large piece of coal is stuck between the grate body 1 and the material block, the bolt 31 located above the connecting plate 3 can be unscrewed to remove the material frame 2 and clear the large piece of coal stuck between the bottom of the grate body 1 and the material frame 2.
[0027] Above the material frame 2, a hopper 22 is also connected. The inner diameter of the upper part of the hopper 22 is larger than the inner diameter of the material frame 2, and the inner diameter of the bottom of the hopper 22 is equal to the inner diameter of the material frame 2. The coal blocks that are put in can be guided by the hopper 22 and enter the material frame 2.
[0028] In use, the grate body 1 is placed inside the support of the vibrating device. The connecting bolt is screwed through the support into the mounting screw hole 12 on the outer surface of the grate body 1 to fix the grate body 1. The vibrating device can be started to make the grate body 1 and the structure above it vibrate. Coal blocks are fed from above and guided by the hopper 22 into the material frame 2. When the coal blocks on the outer ring fall downwards, they will hit the surface of the inclined guide plate 21, causing them to bounce inwards and fall. The coal blocks will not fall to the edge of the surface of the grate body 1. The vibration of the grate body 1 causes the screen frame 11 to vibrate together, achieving the purpose of screening coal blocks. When large coal blocks are vibrated and cannot pass through the screen frame 11, they will shift outwards and finally be discharged to the outside through the gap between the bottom of the grate body 1 and the material frame 2. During use, the bolt 31 can be unscrewed to remove the material frame 2, which can clean up large coal blocks stuck between the bottom of the grate body 1 and the material frame 2 during use.
Claims
1. A structure for preventing coal grate spillage, comprising a grate body (1) and a material frame (2), characterized in that: A screen frame (11) is welded and fixed inside the grate body (1), and a material frame (2) is placed directly above the grate body (1); Multiple connecting plates (3) are evenly connected to the outer surface of the material frame (2) and the grate body (1). The connecting plates (3) are fixed between the grate body (1) and the surface of the material frame (2) by bolts (31). The distance from the bottom of the material frame (2) to each part of the upper surface of the grate body (1) is the same. A guide plate (21) is fixed around the inner surface of the material frame (2). The guide plate (21) is inclined downward.
2. The anti-spillage structure for the coal grate according to claim 1, characterized in that: The upper part of the material frame (2) is connected to the hopper (22), the upper inner diameter of the hopper (22) is larger than the inner diameter of the material frame (2), and the bottom inner diameter of the hopper (22) is equal to the inner diameter of the material frame (2).
3. The anti-spillage structure for the coal grate according to claim 1, characterized in that: The outer surface of the grate body (1) is provided with mounting screw holes (12), and multiple mounting screw holes (12) are evenly arranged.
4. The anti-spillage structure for the coal grate according to claim 1, characterized in that: The outer surface of the grate body (1) and the outer surface of the material frame (2) at the connecting plate (3) are provided with plate grooves (4), and the two ends of the connecting plate (3) are respectively inserted into the plate grooves (4) on the surface of the grate body (1) and the surface of the material frame (2).
5. The anti-spillage structure for the coal grate according to claim 4, characterized in that: The inner surface of the plate groove (4) is provided with a locking screw hole (41), and the bolt (31) is screwed into the locking screw hole (41) after passing through the connecting plate (3).
6. The anti-spillage structure for the coal grate according to claim 5, characterized in that: The surface of the connecting plate (3) at the bolt (31) connection is provided with a groove (32), the depth of which is greater than the height of the nut of the bolt (31).