Gas conveying ash anti-blocking structure

Abstract

The utility model relates to a kind of gas dust conveying anti-blocking structure, including horizontally arranged fixedly connected to the integrated impurity removal box and connecting pipe, two connecting pipes are symmetrically arranged in the impurity removal box two sides respectively with dust conveying bin pipeline and sintering dust collection pipeline intercommunication, movable connection is provided in the impurity removal box with impurity removal aperture, the impurity removal box includes fixedly connected expansion pipe and clean pipe, clean pipe is vertically arranged in expansion pipe top, expansion pipe two ends are fixedly connected with connecting pipe by reducing buffer pipe, and clean pipe port is provided with the pressurizing cover plate fixed by bolt;Expansion pipe diameter is more than twice the diameter of connecting pipe to facilitate buffering and impurity removal;Symmetrically set with clamping block along the axis direction in clean pipe, impurity removal aperture is clamped in expansion pipe, and located with sintering dust collection pipeline intercommunication reducing buffer pipe port, expansion pipe is sundry accommodating space, clamping is convenient for quickly loading or removing impurity removal aperture;The application structure is reasonable, stable in operation, and good in use effect, effectively avoids dust conveying pipeline blockage.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical gas ash conveying technology, specifically a gas ash conveying anti-blocking structure. Background Technology

[0002] In steel metallurgical production, a large amount of dust-laden flue gas is generated, which greatly affects the surrounding environment. Using airflow to collect, transport and centrally treat dust is a common environmental protection method. The principle of gas ash conveying is simple, easy to implement and can adapt to the conveying of dust at various angles and distances. However, during dust collection, large-volume or large-area lightweight debris such as plastic bottles and plastic bags often enter the ash conveying pipeline with the strong airflow. The debris is transported along the ash conveying pipeline with the airflow and accumulates and blocks the pipeline at random points. Because the ash conveying pipeline is long, it is difficult to find and deal with blockages, and maintenance and clearing of blockages are time-consuming.

[0003] The pipeline anti-clogging structure of the pneumatic ash conveying system disclosed in Chinese patent CN219044696U loosens the deposited ash at the pipe bend by setting a movable plate with a pointed cone at the bend, so that the dust does not accumulate. Then, the scattered dust can be carried away during the next ash conveying. However, this structure is only suitable for loosening pipes with a lot of deposited ash and cannot remove large-volume or large-area plastic bag-like debris. In addition, the movable plate is set on the pipe wall and occupies pipe space. Therefore, it is necessary to propose a gas ash conveying anti-clogging structure that is easy to remove large-volume or large-area lightweight debris to address the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a gas ash conveying anti-clogging structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A gas ash conveying anti-clogging structure includes a horizontally fixedly connected impurity removal box and a connecting pipe. Two connecting pipes are symmetrically arranged on both sides of the impurity removal box and are respectively connected to the ash conveying silo pipe and the sintering ash collection pipe. The impurity removal box is provided with a movable impurity removal orifice plate. The impurity removal box includes a fixedly connected expansion pipe and a cleaning pipe. The cleaning pipe is vertically arranged on the top of the expansion pipe. The two ends of the expansion pipe are fixedly connected to the connecting pipe through variable diameter buffer pipes. The port of the cleaning pipe is provided with a pressure cover plate fixed by bolts.

[0007] In the above-mentioned gas ash conveying anti-clogging structure, the diameter of the expansion pipe is more than twice the diameter of the connecting pipe.

[0008] In the above-mentioned gas ash conveying anti-clogging structure, there are symmetrically arranged locking blocks on both sides of the cleaning pipe along the axial direction. The locking blocks clamp the cleaning plate inside the expansion pipe and are located at the port of the variable diameter buffer pipe that is connected to the sintering ash collection pipe.

[0009] The above-mentioned gas ash conveying anti-clogging structure includes a cleaning pipe comprising a pipe body, a sealing flange and a connecting seat at the pipe body port, the connecting seats being symmetrically arranged on both sides of the pipe body, and connecting bolts fixed by nuts on the connecting seats. The pressure cover plate is fixed to the cleaning pipe port and fits against the sealing flange by the connecting bolts.

[0010] The aforementioned gas ash conveying anti-clogging structure includes a pressure cover plate comprising a plate body, pressure channel steel, and lifting rings. Two pressure channel steels are fixedly installed on the top surface of the plate body, and the lifting rings are located between the two pressure channel steels and fixedly connected to the plate body. A sealing groove is provided on the bottom surface of the plate body, and the pressure channel steels are provided with connecting holes corresponding to the connecting bolts.

[0011] In the above-mentioned gas ash conveying anti-clogging structure, a sealing strip is squeezed between the pressure cover plate and the impurity removal box. The sealing strip is fitted into the sealing groove and protrudes from the surface of the pressure cover plate.

[0012] In the above-mentioned gas ash conveying anti-clogging structure, the impurity removal orifice plate is a U-shaped plate whose shape is adapted to the inner wall of the impurity removal box. The U-shaped plate has ash passage holes and handle holes. Several ash passage holes are regularly arranged and their total area is not less than the port area of ​​the adjacent variable diameter buffer pipe.

[0013] In the aforementioned gas ash conveying anti-clogging structure, the area of ​​the ash passage hole is not less than 200 mm². 2 The thickness of the partition between two adjacent ash passage holes is no more than 8mm.

[0014] In the above-mentioned gas ash conveying anti-clogging structure, the ash passage hole is rectangular, circular, or polygonal.

[0015] The above-mentioned gas ash conveying anti-clogging structure includes a connecting flange at the end of the pipe body, the connecting flange having a circumferential array of connecting through holes, and an annular sealing groove on the end face.

[0016] The beneficial effects of adopting the above technical solution are:

[0017] This utility model provides a gas ash conveying anti-clogging structure, comprising a horizontally fixedly connected impurity removal box and a connecting pipe, the integrated structure ensuring the airtightness of the gas ash conveying pipeline; the impurity removal box is equipped with a movable impurity removal orifice plate, which can filter out large-volume impurities mixed in the airflow in the pipeline, and the movable connection structure facilitates the removal and cleaning of the impurity removal orifice plate; the impurity removal box includes a fixedly connected expansion pipe and a cleaning pipe, the cleaning pipe being vertically installed at the top of the expansion pipe, and both ends of the expansion pipe being fixedly connected to the connecting pipe through reducing buffer pipes, the diameter of the expansion pipe being the same as that of the connecting pipe. The diameter is more than twice that of the expansion pipe, which facilitates buffering and impurity removal. Symmetrical locking blocks are installed inside the cleaning pipe to lock the impurity removal orifice plate into the variable diameter buffer pipe port inside the expansion pipe, so that the impurities are filtered out in the expansion pipe without blocking the airflow in the pipeline. The locking structure makes the installation or removal of the impurity removal orifice plate more convenient and improves labor efficiency. The structure of this application is reasonable, the operation is stable, and the use effect is good. It effectively avoids the blockage of the ash conveying pipeline and also avoids the troubleshooting work of pipeline blockage. It is also suitable for installation in any section of the ash conveying pipeline during the transformation and upgrading, so as to reduce labor intensity and improve production efficiency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a partial sectional view of the three-dimensional structure of this utility model;

[0020] Figure 3 This is a front view structural diagram of the present invention;

[0021] Figure 4 This is a top view of the structure of this utility model (excluding the pressure cover plate).

[0022] Figure 5 This is a front view sectional view of the structure of this utility model;

[0023] Figure 6 This is a three-dimensional exploded view of this utility model.

[0024] In the diagram: 1. Impurity removal box; 1-1. Expansion pipe; 1-2. Impurity removal pipe; 1-2-1. Pipe body; 1-2-2. Sealing flange; 1-2-3. Connecting seat; 1-3. Variable diameter buffer pipe; 1-4. Clamping block; 2. Connecting pipe; 2-1. Connecting flange; 3. Pressure cover plate; 3-1. Plate body; 3-2. Pressure channel steel; 3-3. Lifting ring; 3-4. Sealing groove; 3-5. Connecting hole; 4. Impurity removal orifice plate; 4-1. Ash passage hole; 4-2. Handle hole; 5. Nut; 6. Connecting bolt; 7. Sealing strip. Detailed Implementation

[0025] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be clearly and completely described below in conjunction with specific embodiments.

[0026] like Figures 1 to 6 The gas ash conveying anti-clogging structure shown includes a horizontally fixedly connected impurity removal box 1 and a connecting pipe 2. Two connecting pipes 2 are symmetrically arranged on both sides of the impurity removal box 1 and are respectively connected to the ash conveying pipeline. In this embodiment, the pipe 2 is located at the outlet of the gas ash conveying silo pump, with one end connected to the ash conveying silo pipeline and the other end connected to the sintering ash collection pipeline. The impurity removal box 1 is provided with a movable impurity removal orifice plate 4 for filtering out large-volume lightweight impurities mixed in the dust. The impurity removal box 1 includes a fixedly connected expansion pipe 1-1 and a cleaning pipe 1-2. The cleaning pipe 1-2 is vertically arranged on the top of the expansion pipe 1-1. The two ends of the expansion pipe 1-1 are fixedly connected to the connecting pipe 2 through a reducing buffer pipe 1-3. The cleaning pipe 1-2 is provided with a pressure cover plate 3 fixed by bolts at its port. Workers can regularly remove the impurities filtered out in the expansion pipe 1-1 through the cleaning pipe 1-2 to avoid clogging of the ash conveying pipeline.

[0027] The diameter of the expansion tube 1-1 is more than twice the diameter of the connecting tube 2. The increased tube diameter reduces the flow velocity and facilitates the deposition of blocked debris inside the expansion tube 1-1. The cleaning tube 1-2 has symmetrically arranged clamping blocks 1-4 on both sides along the axial direction. The clamping blocks 1-4 clamp the cleaning plate 4 inside the expansion tube 1-1 and are located at the port of the variable diameter buffer tube 1-3 connected to the sintering ash collection pipe, ensuring the volume of debris filtered and stored in the expansion tube 1-1. The cleaning pipe 1-2 includes a pipe body 1-2-1. The pipe body 1-2-1 has a sealing flange 1-2-2 and a connecting seat 1-2-3 at its port. The connecting seats 1-2-3 are symmetrically arranged on both sides of the pipe body 1-2-1. The connecting seats 1-2-3 are equipped with connecting bolts 6 that are fixed by nuts 5. The pressure cover plate 3 is fixed to the port of the cleaning pipe 1-2 and fits against the sealing flange 1-2-2 by the connecting bolts 6. A sealing strip 7 is squeezed between the pressure cover plate 3 and the cleaning box 1. The sealing strip 7 is fitted into the sealing groove 3-4 on the plate body 3-1 and protrudes from the surface of the pressure cover plate 3. The pressure cover plate 3 and the sealing flange 1-2-2 are connected and the sealing strip 7 is pressed together by the connecting bolts 6 to ensure the airtightness of the cleaning box 1. The pressure cover plate 3 includes a plate body 3-1, pressure channel steel 3-2, and lifting ring 3-3. Two pressure channel steels 3-2 are fixedly installed on the top surface of the plate body 3-1. The lifting ring 3-3 is located between the two pressure channel steels 3-2 and is fixedly connected to the plate body 3-1. A sealing groove 3-4 is provided on the bottom surface of the plate body 3-1 for installing the sealing strip 7. The pressure channel steel 3-2 is provided with connecting holes 3-5 corresponding to the connecting bolts 6. The pressure channel steel 3-2 can apply force evenly to press the plate body 3-1 tightly onto the sealing flange 1-2-2. The lifting ring is used to lift the pressure cover plate 3 with lifting equipment when removing debris, which is convenient for workers to operate.

[0028] like Figure 2 , Figure 5 and Figure 6As shown, the impurity removal plate 4 is a U-shaped plate whose shape is adapted to the inner wall of the impurity removal box 1. The U-shaped plate has ash-passing holes 4-1 and handle holes 4-2. The ash-passing holes 4-1 can be rectangular, circular, or polygonal. Several ash-passing holes 4-1 are regularly arranged, and their total area is not less than the area of ​​the adjacent reducing buffer pipes 1-3. The area of ​​the ash-passing holes 4-1 is not less than 200 mm². 2 The thickness of the partition between two adjacent ash passage holes 4-1 is no more than 8mm. The connecting pipe 2 includes a connecting flange 2-1 provided at the end of the pipe body. The connecting flange 2-1 is provided with connecting through holes arranged in a circular array, and an annular sealing groove is provided on the end face.

[0029] Work process: Connect the connecting pipes 2 at both ends of the impurity removal box 1 to the ash conveying pipeline. The impurity removal orifice plate 4 is clamped on the outlet side of the impurity removal box 1 along the airflow direction. In this embodiment, the impurity removal box 1 is installed on the pipeline at the outlet of the gas ash conveying silo pump. In production, multiple impurity removal boxes 1 can be set at different positions along the ash conveying pipeline as needed, and impurity removal orifice plates 4 with different specifications of ash passage holes 4-1 can be selected. Workers can periodically open the pressure cover plate 3 and remove the impurities filtered in the impurity removal box 1 through the impurity cleaning pipe 1-2. First, remove the impurities stuck on the impurity orifice plate 4, and then remove the impurity orifice plate 4 to clean the variable diameter buffer pipe 1-3 of the impurity removal box 1 to complete the cleaning work. The use of this application avoids the tedious operation of checking and clearing blockages after pipeline blockage occurs.

[0030] This article uses specific embodiments to illustrate the principles and implementation methods of this utility model in detail. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. Those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A gas ash conveying anti-clogging structure, characterized in that: The impurity removal box (1) and connecting pipe (2) are horizontally fixed and connected as one unit. The two connecting pipes (2) are symmetrically arranged on both sides of the impurity removal box (1) and are respectively connected to the ash conveying silo pipe and the sintering ash collection pipe. The impurity removal box (1) is provided with a movable impurity removal orifice plate (4). The impurity removal box (1) includes an expansion pipe (1-1) and a cleaning pipe (1-2) that are fixedly connected. The cleaning pipe (1-2) is vertically arranged on the top of the expansion pipe (1-1). The two ends of the expansion pipe (1-1) are fixedly connected to the connecting pipe (2) through a variable diameter buffer pipe (1-3). The port of the cleaning pipe (1-2) is provided with a pressure cover plate (3) fixed by bolts.

2. The gas ash conveying anti-clogging structure according to claim 1, characterized in that: The diameter of the expansion tube (1-1) is more than twice the diameter of the connecting tube (2).

3. The gas ash conveying anti-clogging structure according to claim 2, characterized in that: The cleaning pipe (1-2) has symmetrically arranged locking blocks (1-4) on both sides along the axial direction. The locking blocks (1-4) clamp the cleaning plate (4) inside the expansion pipe (1-1) and are located at the port of the variable diameter buffer pipe (1-3) that is connected to the sintering ash collection pipe.

4. The gas ash conveying anti-clogging structure according to claim 3, characterized in that: The cleaning pipe (1-2) includes a pipe body (1-2-1). The pipe body (1-2-1) is provided with a sealing flange (1-2-2) and a connecting seat (1-2-3) at its port. The connecting seats (1-2-3) are symmetrically arranged on both sides of the pipe body (1-2-1). The connecting seat (1-2-3) is provided with a connecting bolt (6) fixed by a nut (5). The pressure cover plate (3) is fixed to the port of the cleaning pipe (1-2) and fits against the sealing flange (1-2-2) by the connecting bolt (6).

5. The gas ash conveying anti-clogging structure according to claim 4, characterized in that: The pressure cover plate (3) includes a plate body (3-1), a pressure channel steel (3-2), and a lifting ring (3-3). Two pressure channel steels (3-2) are fixedly installed on the top surface of the plate body (3-1). The lifting ring (3-3) is located between the two pressure channel steels (3-2) and is fixedly connected to the plate body (3-1). A sealing groove (3-4) is opened on the bottom surface of the plate body (3-1). A connecting hole (3-5) corresponding to the connecting bolt (6) is provided on the pressure channel steel (3-2).

6. The gas ash conveying anti-clogging structure according to claim 5, characterized in that: A sealing strip (7) is squeezed between the pressure cover plate (3) and the impurity removal box (1). The sealing strip (7) is fitted into the sealing groove (3-4) and protrudes from the surface of the pressure cover plate (3).

7. The gas ash conveying anti-clogging structure according to claim 3, characterized in that: The impurity removal plate (4) is a U-shaped plate whose shape is adapted to the inner wall of the impurity removal box (1). The U-shaped plate has ash passage holes (4-1) and handle holes (4-2). Several ash passage holes (4-1) are arranged in a regular pattern and their total area is not less than the port area of ​​the adjacent variable diameter buffer tube (1-3).

8. The gas ash conveying anti-clogging structure according to claim 7, characterized in that: The area of ​​the ash passage (4-1) is not less than 200mm². 2 The thickness of the partition between two adjacent ash passage holes (4-1) is no more than 8mm.

9. The gas ash conveying anti-clogging structure according to claim 8, characterized in that: The ash passage (4-1) is rectangular, circular, or polygonal.

10. The gas ash conveying anti-clogging structure according to claim 1, characterized in that: The connecting pipe (2) includes a connecting flange (2-1) provided at the end of the pipe body. The connecting flange (2-1) is provided with connecting through holes arranged in a circular array, and an annular sealing groove is provided on the end face.

Images