气膜破拱清堵防堵系统及料斗组件
The air-film arch-breaking and unblocking system, utilizing a downward rotating airflow and a rapping mechanism, solves the problem of easy blockage in the raw coal hopper, achieving efficient unblocking and ensuring stable boiler operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI KANGDI ELECTRIC POWER SCI & TECH
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, raw coal hoppers are prone to coal powder sticking to the walls, arching, and clogging due to moisture or the presence of coal slurry. Commonly used unclogging mechanisms such as vibratory hammers and air blowing mechanisms are not very effective, especially for wet coal and highly viscous coal, which leads to unstable boiler operation.
The air-film arch-breaking and blockage-clearing system includes a first air-blowing component that generates a rotating downward airflow, forming a spiral motion trajectory that covers the material accumulated in the center and side walls of the hopper. It utilizes the rotating vortex shearing action to destroy the arch structure, and combines it with a rapping mechanism and blockage detection to achieve efficient blockage clearing.
It significantly improves the unblocking effect, avoids hopper blockage, reduces energy consumption, and ensures stable boiler operation. In particular, its unblocking effect on wet coal and sticky coal is better than that of unidirectional airflow.
Smart Images
Figure CN224512095U_ABST
Abstract
Claims
1. A gas film arch breaking and plugging prevention system, characterized in that: The device includes a hopper unblocking mechanism, which includes a first air blowing component. The first air blowing component can be disposed on the hopper wall and can generate a downward rotating airflow to blow away the material in the hopper.
2. The gas film arch cleaning and plugging prevention system according to claim 1, characterized in that: The first air blowing assembly includes a first air supply pipe, a first air outlet structure, and a second air outlet structure. Both the first air outlet structure and the second air outlet structure are connected to the first air supply pipe. The first air supply pipe is also connected to an air source for supplying air. The air outlet of the first air outlet structure is inclined downward or horizontally arranged, and the air outlet of the second air outlet structure is arranged downward. Multiple first air outlet structures and multiple second air outlet structures are provided, and the multiple first air outlet structures and multiple second air outlet structures are arranged around the hopper.
3. The gas film arch cleaning and plugging prevention system according to claim 2, characterized in that: Multiple first air outlet structures and multiple second air outlet structures are arranged alternately around the hopper.
4. The gas film arch cleaning and plugging prevention system according to claim 2 or 3, characterized in that: The first air blowing assembly further includes a third air outlet structure, wherein multiple third air outlet structures are arranged around the hopper, and all of the multiple third air outlet structures are connected to the first air supply pipe. The air outlet of the third air outlet structure is located on the wall of the hopper and can blow air inward along the radial direction of the hopper.
5. The gas film arch cleaning and plugging prevention system according to claim 4, characterized in that: The first air supply pipe is an annular air supply pipe, which surrounds the hopper, and the first air outlet structure, the second air outlet structure, and the third air outlet structure are all connected to the first air supply pipe through an electrically controlled valve.
6. The gas membrane arch cleaning and plugging prevention system according to claim 5, characterized in that: The electrically controlled valve is a pulse valve, and the air source includes a compressed air tank for storing high-pressure air. The high-pressure air generates pulse waves through the pulse valve.
7. The gas membrane arch cleaning and plugging prevention system according to claim 2, characterized in that: The first air outlet structure includes an air jet pipe, the air outlet of which is inclined downward or horizontally arranged, and the air outlet is flush with the inner wall of the hopper.
8. The gas film arch cleaning and plugging prevention system of claim 2, wherein: The air outlet of the second air outlet structure is a flat air outlet, which is positioned downwards.
9. The gas film arch cleaning and plugging prevention system of claim 8, wherein: The flat air outlet is either a fan-shaped air outlet or a cone-shaped air outlet that is narrow at the top and wide at the bottom.
10. The gas membrane arch cleaning and plugging prevention system according to claim 2, 8 or 9, characterized in that: The second air outlet structure includes a nozzle housing, a gas channel is provided inside the nozzle housing, an air inlet is provided on the outer side of the nozzle housing, the air inlet is connected to the gas channel and is connected to the first air supply pipe, an air outlet is provided at the bottom of the nozzle housing, the air outlet is connected to the gas channel, and the inner side of the nozzle housing is flush with the inner wall of the hopper.
11. The gas membrane arch cleaning and plugging prevention system of claim 10, wherein: The nozzle housing includes an outer layer plate, a core plate, and an inner layer plate arranged sequentially from the outside to the inside. An air inlet is provided on the outer layer plate, and an opening is provided at the bottom of the core plate, which corresponds to the air inlet to form a gas channel between the outer layer plate and the inner layer plate, and the gas channel communicates with the air inlet. The bottom of the inner layer plate, the bottom of the core plate, and the outer layer plate together form the air outlet. The inner side of the inner layer plate is flush with the inner wall of the hopper, and the bottom of the outer layer plate is fixed to the hopper, with the bottom inner side of the outer layer plate flush with the inner wall of the hopper.
12. The gas membrane arch cleaning and plugging prevention system of claim 4, wherein: The third air outlet structure includes an air outlet pipe, the air outlet of which is disposed on the wall of the hopper and flush with the inner wall of the hopper; wherein the axis of the air outlet pipe extends radially along the hopper to blow air inward radially along the hopper.
13. The gas membrane arch cleaning and plugging prevention system of claim 1, wherein: Multiple sets of the first air blowing assembly are arranged sequentially from bottom to top along the hopper.
14. The gas membrane arch cleaning and plugging prevention system of claim 1, wherein: The hopper unblocking mechanism also includes a vibrating mechanism, which is located on the outside of the hopper and is used to vibrate the hopper.
15. The gas membrane arch cleaning and plugging prevention system of claim 1, wherein: It also includes a compartment clearing mechanism, which includes a second air blowing component. The second air blowing component is used to be installed at the connection between the main hopper and the compartment hopper, and the second air blowing component can blow air toward the compartment hopper to sweep and push the material in the compartment hopper.
16. The gas membrane arch cleaning and plugging prevention system of claim 1, wherein: It also includes a material blockage detection mechanism, which is used to detect whether there is coal blockage in the hopper, and the material blockage detection mechanism is connected to the control device, which is connected to the hopper unblocking mechanism.
17. A hopper assembly characterized by: Including the air-film arch-breaking, unblocking, and anti-blocking system as described in any one of claims 1-16.