Unpowered negative pressure dust extraction system

Abstract

The utility model discloses a non -power negative pressure dust collection system, it includes hopper, downcomer, dished valve, downcomer pump, ash conveying pipeline, ash storehouse, the bottom end export of hopper is connected with downcomer, downcomer is equipped with dished valve downcomer pump along the downcomer direction of material in proper order, the outlet of downcomer pump is connected with the inlet of ash storehouse through ash conveying pipeline, the lateral wall of hopper is equipped with the mouth of the row and blocks, the mouth of the row and blocks is connected with ash conveying pipeline through the row and blocks pipe, still including have the dust collecting silo, the top end of dust collecting silo is equipped with end cover, the bottom end fixed of dust collecting silo has hopper, the inside of hopper is communicated with dust collecting silo, the lateral wall of hopper is equipped with the discharge gate, the discharge gate is communicated with the row and blocks pipe through the connecting pipe.

Description

Technical Field

[0001] This utility model relates to the field of electrostatic precipitator technology, specifically to a non-powered negative pressure dust collection system. Background Technology

[0002] Currently, most thermal power plants use dense-phase pneumatic ash conveying systems. The ash hopper of the electrostatic precipitator is under negative pressure. Compressed air and a discharge pump are used to transport the ash in the hopper to the ash storage through positive pressure ash conveying pipelines, and then the ash is transported out by vehicles. In order to adapt to the blending and combustion of coal, changes in coal quality have affected the stable operation of environmental protection facilities such as electrostatic precipitators. While ensuring output, the air consumption of the ash conveying system has increased, resulting in a shortened wear cycle of system pipelines and frequent ash leakage. The surrounding equipment and environmental sanitation have always been unsatisfactory. Ash often accumulates in the electrostatic precipitator chamber, and the collected ash can only be bagged manually and loaded onto vehicles for centralized disposal. This increases the workload of maintenance personnel and generates various costs for vehicle use and consumables. Utility Model Content

[0003] The purpose of this invention is to provide a non-powered negative pressure dust collection system.

[0004] This utility model is implemented by the following technical solution: a non-powered negative pressure dust collection system, which includes a dust hopper, a discharge pipe, a dome valve, a discharge pump, a dust conveying pipeline, and a dust silo. The bottom outlet of the dust hopper is connected to the discharge pipe. The dome valve and the discharge pump are sequentially arranged along the discharge direction of the material on the discharge pipe. The outlet of the discharge pump is connected to the inlet of the dust silo through the dust conveying pipeline. A drain port is opened on the side wall of the dust hopper. The drain port is connected to the dust conveying pipeline through a drain pipe. The system also includes a dust collection silo. An end cap is fastened to the top of the dust collection silo. A hopper is fixed at the bottom of the dust collection silo. The hopper is connected to the interior of the dust collection silo. A discharge port is opened on the side wall of the hopper. The discharge port is connected to the drain pipe through a connecting pipe.

[0005] Furthermore, the connecting pipe is equipped with a first shut-off valve.

[0006] Furthermore, a second shut-off valve is installed on the drain pipe between the connecting pipe and the ash conveying pipeline.

[0007] Furthermore, the outer wall of the ash collection silo is fixed and connected to a first purge pipe, the outlet end of the first purge pipe extends into the interior of the ash collection silo and is oriented toward the hopper, and the first purge pipe is equipped with a third shut-off valve.

[0008] Furthermore, the outer wall of the connecting pipe is connected to a second purge pipe, and the second purge pipe is equipped with a fourth shut-off valve.

[0009] The advantages of this invention are: operators can directly pour the leaked coal ash from the surrounding area into the nearest ash collection silo, which is convenient for operators and reduces labor. Before pouring the coal ash into the ash collection silo, the first shut-off valve is opened and the second, third, and fourth shut-off valves are closed. The ash hopper of the electrostatic precipitator is under negative pressure. The coal ash inside the ash collection silo is transported to the ash hopper through the connecting pipe, and then the leaked coal ash is transported to the ash storage through the ash hopper and ash conveying pipeline. This reduces the labor intensity and workload of manually bagging coal ash and ensures the timely cleaning and transportation of leaked coal ash. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the structure of the utility model;

[0012] In the diagram: 1. Ash hopper, 2. Feed pipe, 3. Dome valve, 4. Feed pump, 5. Ash conveying pipeline, 6. Ash silo, 7. Plug discharge port, 8. Plug discharge pipe, 9. Ash collection silo, 10. End cover, 11. Hopper, 12. Discharge port, 13. Connecting pipe, 14. First shut-off valve, 15. Second shut-off valve, 16. First purge pipe, 17. Third shut-off valve, 18. Second purge pipe, 19. Fourth shut-off valve. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] like Figure 1As shown, the non-powered negative pressure dust collection system includes an ash hopper 1, a discharge pipe 2, a dome valve 3, a discharge pump 4, an ash conveying pipeline 5, and an ash silo 6. The bottom outlet of the ash hopper 1 is connected to the discharge pipe 2. The discharge pipe 2 is equipped with the dome valve 3 and the discharge pump 4 in sequence along the material discharge direction. The outlet of the discharge pump 4 is connected to the inlet of the ash silo 6 through the ash conveying pipeline 5. The side wall of the ash hopper 1 has a drain port 7, which is connected to the ash conveying pipeline 5 through a drain pipe 8. The system also includes an ash collection silo 9. The top of the ash collection silo 9 is fitted with an end cover 10. When the end cover 10 is opened, the operator pours the collected coal ash into the ash collection silo 9. The bottom of the ash collection silo 9 is fixed with a hopper 11, which is connected to the interior of the ash collection silo 9. The side wall of the hopper 11 has a discharge port 12, which is connected to the drain pipe 8 through a connecting pipe 13.

[0015] The connecting pipe 13 is equipped with a first shut-off valve 14.

[0016] A second shut-off valve 15 is installed on the drain pipe 8 between the connecting pipe 13 and the ash conveying pipeline 5.

[0017] The outer wall of the ash collection silo 9 is fixed and connected to a first purge pipe 16. The outlet end of the first purge pipe 16 extends into the interior of the ash collection silo 9 and is positioned toward the hopper 11. The first purge pipe 16 is equipped with a third shut-off valve 17.

[0018] The outer wall of the connecting pipe 13 is connected to the second purge pipe 18, and the second purge pipe 18 is equipped with a fourth shut-off valve 19.

[0019] In this embodiment, each ash hopper 1 of the electrostatic precipitator has a corresponding drain pipe 8 and ash collection silo 9.

[0020] The specific operation process of this embodiment is as follows:

[0021] Operators can directly pour the leaked coal ash into the nearest ash collection silo 9, which is convenient for operators and reduces labor. Before pouring the coal ash into the ash collection silo 9, the first shut-off valve 14 is opened and the second shut-off valve 15, the third shut-off valve 17, and the fourth shut-off valve 19 are closed. The ash hopper 1 of the electrostatic precipitator is under negative pressure. The coal ash in the ash collection silo 9 is transported to the ash hopper 1 through the connecting pipe 13. The leaked coal ash is then transported to the ash silo 6 using the ash hopper 1 and the ash conveying pipeline 5. This reduces the labor intensity and workload of manually bagging the coal ash and ensures the timely cleaning and transportation of the leaked coal ash.

[0022] Regularly open the third shut-off valve 17 and use compressed air to clear the coal ash inside the hopper 11 to ensure smooth coal ash transport.

[0023] When the connecting pipe 13 becomes blocked, the fourth shut-off valve 19 can be opened to use compressed air to help purge the connecting pipe 13, ensuring smooth flow of materials in the connecting pipe 13.

[0024] When the ash conveying pipeline 5 becomes blocked, the first shut-off valve 14 is closed and the second shut-off valve 15 is opened, and the ash conveying pipeline 5 is under positive pressure, so that the blocked coal ash in the ash conveying pipeline 5 is transported to the ash hopper 1 of the electrostatic precipitator, ensuring the smooth flow of coal ash inside the ash conveying pipeline 5.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A non-powered negative pressure dust collection system, comprising a dust hopper, a discharge pipe, a dome valve, a discharge pump, a dust conveying pipeline, and a dust silo. The bottom outlet of the dust hopper is connected to the discharge pipe. The dome valve and the discharge pump are sequentially arranged along the material discharge direction of the discharge pipe. The outlet of the discharge pump is connected to the inlet of the dust silo through the dust conveying pipeline. A drain port is provided on the side wall of the dust hopper, and the drain port is connected to the dust conveying pipeline through a drain pipe. The system is characterized in that... It also includes an ash collection silo, the top of which is fitted with an end cap, and the bottom of which is fixed with a hopper. The hopper is connected to the interior of the ash collection silo, and the side wall of the hopper has a discharge port, which is connected to the blockage removal pipe through a connecting pipe.

2. The non-powered negative pressure dust collection system according to claim 1, characterized in that, The connecting pipe is equipped with a first shut-off valve.

3. The powerless negative pressure dust collection system according to claim 2, characterized in that, The drain pipe between the connecting pipe and the ash conveying pipeline is equipped with a second shut-off valve.

4. The non-powered negative pressure dust collection system according to claim 3, characterized in that, The outer wall of the ash collection silo is fixed and connected to a first purge pipe. The outlet end of the first purge pipe extends into the interior of the ash collection silo and is oriented toward the hopper. The first purge pipe is equipped with a third shut-off valve.

5. The powerless negative pressure dust collection system according to claim 4, characterized in that, The outer wall of the connecting pipe is connected to a second purge pipe, and the second purge pipe is equipped with a fourth shut-off valve.

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