A device for preventing blockage of a flue gas duct
By installing an anti-clogging device in the soot conveying pipeline and using a sedimentation collection chamber and filter screen to separate large particles, the problem of easy clogging in the soot conveying pipeline is solved, achieving convenient cleaning and equipment protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINCHUAN GROUP NICKEL COBALT CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-26
AI Technical Summary
Existing ash conveying pipelines are prone to blockage. Traditional detection methods are time-consuming and damage the pipelines. The cleaning process is complicated, which affects production efficiency and equipment life.
Design an anti-clogging device for soot conveying pipelines, including an anti-clogging device body, a sedimentation collection chamber and a filter screen. The sedimentation collection chamber and the filter screen are used to separate large particles to reduce the risk of clogging, and the vertical blockage collection pipe facilitates the cleaning of blockages.
It effectively prevents caking and iron from entering downstream equipment, simplifies the cleaning process, reduces labor intensity, improves the efficiency of pipe blockage treatment, and reduces equipment damage.
Smart Images
Figure CN224278978U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pipeline anti-clogging technology, specifically relating to an anti-clogging device for a flue gas conveying pipeline. Background Technology
[0002] In modern metallurgical production processes, pneumatic ash conveying systems serve as core dust removal equipment, handling over one million tons of flue dust annually. However, this system has revealed significant shortcomings in actual operation: frequent material caking in the pneumatic conveying pipelines leads to reduced flow cross-sections and blockages.
[0003] In terms of pipeline systems, existing monitoring methods have significant technical shortcomings when localized ash accumulation and blockage occur in ash conveying pipes. Traditional operation and maintenance methods rely on manual experience for judgment and require segmented isolation for fault location, typically necessitating 3-5 argon arc welding cuts to pinpoint the blockage. This destructive detection method has three obvious drawbacks: firstly, delayed fault response, requiring an average of 6-8 hours of downtime for troubleshooting; secondly, cumulative damage to the pipe wall, with statistics showing that repeated drilling at the same location more than 3 times reduces the pipeline's pressure-bearing capacity by 27%; and finally, the generation of a large amount of industrial waste, with a single maintenance operation producing up to 8.5 kg of welding rod ends and cutting waste.
[0004] Once a blockage is identified, if the blockage is not severe, the slabs are usually blown away by increasing the conveying pressure. However, after the slabs are blown away, they will enter the ash metering bin at the end of the pipeline, causing the loss-in-weight scale to jam. If the blockage is severe, the pipeline must be cut for cleaning, which increases costs and consumes a lot of time and manpower. Utility Model Content
[0005] The purpose of this utility model is to provide an anti-clogging device for ash conveying pipelines, so as to reduce the probability of clogging of ash conveying pipelines and facilitate personnel to handle blockages.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A device for preventing blockage in a soot conveying pipeline includes a device body with flange interfaces at both ends and a sedimentation collection chamber in the middle. The sedimentation collection chamber is funnel-shaped, and its opening gradually narrows along the pneumatic conveying direction. A filter screen is fixedly installed at the smaller opening end of the sedimentation collection chamber, and a vertically downward blockage collection pipe is connected to the side wall at the larger opening end. The end of the blockage collection pipe is sealed with an end cap.
[0008] Compared with the prior art, the present invention has the following beneficial effects:
[0009] This utility model device is applied to the horizontal section of the outlet of a silo pump, which can effectively prevent caking, ironware and debris from entering the downstream ash collection system, avoiding the impact on downstream metering and transportation equipment and affecting system production; at the same time, the device is easy to clean the caking, ironware and debris blocking the pipeline, which can improve the efficiency of ash conveying pipeline blockage handling and reduce the labor intensity of the job. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model.
[0011] In the diagram, 1-the anti-clogging device body, 2-the sediment collection chamber, 3-the filter screen, and 4-the blockage collection pipe. Detailed Implementation
[0012] The present invention will be further explained below with reference to the accompanying drawings.
[0013] like Figure 1 As shown, the present invention provides an anti-clogging device for ash conveying pipelines, comprising an anti-clogging device body 1, flange interfaces at both ends of the anti-clogging device body 1, and a sedimentation collection chamber 2 in the middle. The sedimentation collection chamber 2 is funnel-shaped, and the opening of the sedimentation collection chamber 2 gradually narrows along the pneumatic conveying direction. A filter screen 3 is fixedly installed at the smaller opening end of the sedimentation collection chamber 2, and a vertically downward blockage collection pipe 4 is connected to the side wall at the larger opening end. The end of the blockage collection pipe 4 is sealed with an end cap.
[0014] The working principle of this utility model is as follows: The anti-clogging device body 1 is installed on the easily clogged horizontal section of the ash conveying pipe. After the ash conveyed by the airflow enters the sedimentation and collection chamber 2, the flow velocity decreases due to the increased pipe diameter. Most of the caking lumps, ironware, and large particles naturally settle on the side wall of the collection chamber and fall into the blockage collection pipe 4. A small portion of the caking lumps, ironware, and large particles are re-accelerated by the airflow and impact the filter screen 3, falling into the blockage collection pipe 4 under the action of turbulence, making it convenient for personnel to open the end cap for cleaning later. Compared with the ash conveying pipe without this anti-clogging device, the difficulty and labor intensity of personnel handling blockage problems are reduced. One person can complete the disassembly, installation, and blockage removal of the anti-clogging device.
Claims
1. A soot transfer pipe clogging prevention device characterized by comprising: Including anti -blocking device body (1), the flange interface is provided with both ends of anti -blocking device body (1), and the middle part is provided with deposition collection chamber (2), and deposition collection chamber (2) is funnel-shaped, and the opening of deposition collection chamber (2) gradually reduces along the pneumatic conveying direction;The smaller end of the opening of the deposition collection chamber (2) is fixedly installed with a filter screen (3), and the sidewall of the larger end of the opening is connected with a vertical downward blockage collection pipe (4), and the end of the blockage collection pipe (4) is sealed with an end cover.