Improved electric precipitator outlet flue configuration structure

Abstract

The utility model discloses an improved electric dust remover outlet flue configuration structure which comprises two groups of smoke outlet pipelines which are vertically and obliquely arranged, bottom outlets of the two groups of smoke outlet pipelines are communicated to the same four-way pipe joint, upper end inlets of the smoke outlet pipelines are respectively connected to outlets of two groups of electric dust removers, and bell jar valves are arranged at the joints of the smoke outlet pipelines and the four-way pipe joint. One of the other two joints of the four-way pipe joint is connected to a fan through a pipeline, the other joint is connected to an ash hopper under the four-way pipe joint, a scraper conveyor is arranged at the bottom end of the ash hopper, a discharge port of the ash hopper is in butt joint with a feed port of the scraper conveyor, and the scraper conveyor conveys collected ash to an ash bin. The system is reasonable in structural design, outlet flues of the two systems are arranged in a V shape, a horizontal flue is omitted, shock wave ash cleaners are arranged on the flues, compressed air is adopted as an air source, ash accumulation is avoided, closed ash recovery can be achieved, the post operation environment is improved, overhaul and maintenance are easy, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the field of dust removal device equipment, in particular to an improved configuration structure of an outlet flue of an electric dust collector. Background Art

[0002] The process configuration of flue gas at the outlet of metallurgical furnace in nonferrous smelting enterprises is basically waste heat boiler and electrostatic precipitator, which mainly plays the role of cooling and dust removal. With the increase of production capacity, the design of electrostatic precipitator has also shifted from single system to dual system. For example, the patent announcement number is: CN 205182951 U discloses an inlet and outlet flue of electrostatic precipitator, including the left first treatment chamber air inlet flue, the left second treatment chamber air inlet flue, the left third treatment chamber air inlet flue, the right first treatment chamber air inlet flue, the right second treatment chamber air inlet flue, the right third treatment chamber air inlet flue, the left first treatment chamber air outlet flue, the left second treatment chamber air outlet flue, the left third treatment chamber air outlet flue, the right first treatment chamber air outlet flue, the right second treatment chamber air outlet flue, the left flue gas distribution header, the right flue gas distribution header, the left induced draft fan outlet and the right induced draft fan. In this application, the resistance of each branch flue before and after the dust collector is equivalent and the flow rate is uniform, so the output of each treatment chamber of the dust collector is uniform and the dust removal effect is good.

[0003] The dual-system electrostatic precipitator outlet flue is configured as a horizontal flue, and the flue gas control adopts an electric butterfly valve. There are certain problems in the actual production process:

[0004] 1. When the dust collection efficiency of the electrostatic precipitator decreases, the ash will be deposited in the horizontal flue and need to be cleaned manually.

[0005] 2. Ash accumulation in the flue will make it difficult to open and close the electric butterfly valve, which may seriously affect normal production. Utility Model Content

[0006] The purpose of the utility model is to overcome the defects and shortcomings of the prior art, to provide an improved configuration structure of the flue gas outlet of an electrostatic precipitator, and to solve various problems existing in the prior art.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An improved electrostatic precipitator outlet flue configuration structure includes two groups of vertically inclined smoke outlet pipes, the two smoke outlet pipes are arranged in a V shape, the bottom outlets of the two groups of smoke outlet pipes are connected to the same four-way pipe joint, the upper end inlets of the smoke outlet pipes are respectively connected to the outlets of the two groups of electrostatic precipitators, and a bell valve is provided at the connection, and the remaining two joints of the four-way pipe joint are connected to a fan through a pipeline, and the other is connected to an ash hopper directly below, a scraper conveyor is provided at the bottom end of the ash hopper, the discharge port of the ash hopper and the feed port of the scraper conveyor are connected by docking, and a discharge valve is installed at the outlet, and the scraper conveyor transports the collected ash to the ash bin.

[0009] The inlet of the bell valve is connected to a reducer, and the outlet is connected to a smoke outlet pipe. The large end of the reducer is respectively connected to the outlets of two groups of electrostatic precipitators through an expansion joint.

[0010] The smoke outlet pipes are respectively composed of two pipes connected by an expansion joint, shock wave dust collectors are respectively installed on the upper pipes, and the outlets of the lower pipes are respectively connected to the two inlets of the four-way pipe joint.

[0011] A bin wall vibrator is arranged on the side wall of the ash hopper.

[0012] The bottom port of the ash hopper is provided with a star-shaped discharge valve.

[0013] The air inlet of the fan is connected to the four-way pipe joint through an air outlet duct, and a filter screen is installed at the opening where the four-way pipe joint is connected to the air inlet of the fan.

[0014] A partition is arranged in the pipe in the middle part of the air outlet duct, a vent is arranged between the partition and the air outlet duct, the partition is staggered up and down, the bottom end of the air outlet duct where the partition is located is connected to a dust collecting hopper, and a second filter is arranged between the end of the partition where the vent is located and the side wall of the air outlet duct.

[0015] The air outlet duct is connected with a blower for reversely cleaning dust on the partition filter screen 2 and the ash hopper filter screen 1. The blower is connected to the channel between the rear of the partition and the front end of the air inlet of the blower.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The structural design of this application is reasonable. The outlet flues of the two systems are arranged in a "V" shape, and the horizontal flue is eliminated. At the same time, the flue is equipped with a shock wave ash cleaner, which uses compressed air as the air source to avoid ash accumulation and realize closed ash recovery, thereby improving the working environment, facilitating inspection and maintenance, and reducing the labor intensity of employees. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 for Figure 1 Side view of the structure at AA in the middle.

[0020] Figure 3 This is a schematic diagram of the structure in which the filter baffle is replaced in the air outlet duct.

[0021] Reference numerals:

[0022] 1. Outlet; 2. Expansion joint; 3. Reducer; 4. Bell valve; 5. Smoke outlet duct; 6. Shock wave cleaner; 7. Four-way pipe joint; 8. Ash hopper; 9. Silo wall vibrator; 10. Star discharge valve; 11. Scraper conveyor; 12. Air outlet duct; 13. Filter one; 14. Partition; 15. Ventilation port; 16. Dust hopper; 17. Filter two; 18. Blower. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See attached Figure 1-3 ;

[0025] An improved electrostatic precipitator outlet flue configuration structure includes two groups of vertically inclined smoke outlet pipes 5, the smoke outlet pipes 5 are respectively composed of two pipes connected by an expansion joint 2, shock wave cleaners 6 are respectively installed on the upper pipes, and the lower pipe outlets are respectively connected to the two inlets of the four-way pipe joint 7. The flue is equipped with an expansion joint to ensure that the flue has sufficient compensation for temperature difference and mechanical vibration. The two smoke outlet pipes 5 are arranged in a V shape, and the bottom outlets of the two groups of smoke outlet pipes 5 are connected to the same four-way pipe joint 7. The inlet of the upper end of the smoke outlet pipe 5 is respectively connected to the outlets 1 of the two groups of electrostatic precipitators, and a bell valve 4 is provided at the connection. One of the other two joints of the four-way pipe joint 7 is connected to the fan through a pipeline, and the other is connected to the ash hopper 8 directly below. A silo wall vibrator 9 is provided on the side wall of the ash hopper, and a scraper conveyor 11 is provided at the bottom end of the ash hopper 8. The discharge port of the ash hopper 8 and the feed port of the scraper conveyor 11 are connected by docking, and a star-shaped unloading valve 10 is installed at the outlet. The scraper conveyor 11 transports the collected ash to the ash bin.

[0026] Furthermore, the inlet of the bell valve 4 is connected to the reducer 3, and the outlet is connected to the smoke outlet pipe 5. The large end of the reducer 3 is respectively connected to the outlets of the two groups of electrostatic precipitators through the expansion joint 2. The bell valve is provided on the flue of the smoke outlet pipe, which can be adjusted according to the actual production situation, avoiding the situation where the valve cannot be opened and closed due to the accumulation of soot.

[0027] Furthermore, the air inlet of the fan is connected to the four-way pipe joint through the air outlet duct 12, and the mouth of the four-way pipe joint 7 connected to the air inlet of the fan is installed with a filter screen 13. The dust in the smoke outlet duct is filtered by the filter screen 1. A partition 14 is arranged in the pipe in the middle of the air outlet duct 12, and a vent 15 is arranged between the partition 14 and the air outlet duct 12. The partition 14 is arranged in an up-down staggered manner. The bottom end of the air outlet duct 12 where the partition 14 is located is connected to a dust hopper 16, and a filter screen 2 17 is arranged between the end of the partition where the vent 15 is located and the side wall of the air outlet duct 12. The filtered smoke is buffered and filtered through the partition in the air outlet duct, thereby ensuring the cleanliness of the smoke and dust discharged. The air outlet duct 12 is connected to a blower 18 for reversely cleaning the dust on the partition filter screen 2 and the ash hopper filter screen 1, and the blower 18 is connected to the channel between the rear of the partition 14 and the front end of the air inlet of the fan. Through the structure of the blower, the filter screen installed in the smoke outlet pipe can be blown back and cleaned at regular intervals, and enter the corresponding dust hopper and ash hopper to ensure smooth air outlet in the pipeline and facilitate the recovery of smoke ash.

[0028] The specific working process is as follows: after the flue gas comes out of the outlet of the electrostatic precipitator, it passes through the reducer, expansion tube and bell valve to the smoke outlet pipe, and the flue gas enters the vertically inclined smoke outlet pipe, which is convenient for smoke outlet on the one hand and dust collection on the other hand. By arranging a shock wave dust cleaner on the smoke outlet pipe, the dust in the flue gas can be cleaned by shocking to avoid accumulation on the side wall of the smoke outlet pipe. The smoke outlet pipe is divided into two sections, which are connected by an expansion joint to ensure that the flue has sufficient compensation for temperature difference and mechanical vibration. The flue gas enters the fan through the four-way pipe, and is filtered through a filter at the inlet of the four-way pipe, so as to ensure that the shocked dust enters the ash hopper, and then the collected ash is transported to the ash bin by the scraper conveyor.

[0029] Through the structural design of the bell valve, the lower part is the air inlet. When the bell is normally sealed, it falls to seal the lower air inlet. Otherwise, the valve opens when it is upward. The outlet is set on the side to avoid the situation where the valve cannot be opened or closed when ash accumulates in the flue.

[0030] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0031] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. An improved configuration structure of the flue gas outlet of an electrostatic precipitator, characterized in that: The invention comprises two groups of smoke outlet pipes (5) arranged vertically and inclined, the two smoke outlet pipes (5) are arranged in a V shape, the bottom outlets of the two groups of smoke outlet pipes (5) are connected to the same four-way pipe joint (7), the upper end inlets of the smoke outlet pipes (5) are respectively connected to the outlets (1) of the two groups of electrostatic precipitators, and a bell valve (4) is arranged at the connection point, one of the other two joints of the four-way pipe joint (7) is connected to a fan through a pipeline, and the other is connected to an ash hopper (8) directly below, a scraper conveyor (11) is arranged at the bottom end of the ash hopper (8), the discharge port of the ash hopper (8) and the feed port of the scraper conveyor (11) are connected by docking, and a discharge valve is installed at the outlet, and the scraper conveyor (11) conveys the collected ash to the ash bin.

2. The improved electrostatic precipitator outlet flue configuration structure according to claim 1 is characterized in that: The inlet of the bell valve (4) is connected to the reducer (3), and the outlet is connected to the smoke outlet pipe (5); the large end of the reducer (3) is respectively connected to the outlets of the two groups of electrostatic precipitators through an expansion joint (2).

3. The improved electrostatic precipitator outlet flue configuration structure according to claim 1 is characterized in that: The smoke outlet pipe (5) is composed of two pipes connected by an expansion joint (2), the upper pipe is provided with a shock wave ash cleaner (6), and the outlet of the lower pipe is connected to the two inlets of a four-way pipe joint (7).

4. The improved electrostatic precipitator outlet flue configuration structure according to claim 1 is characterized in that: A silo wall vibrator (9) is provided on the side wall of the ash hopper.

5. The improved electrostatic precipitator outlet flue configuration structure according to claim 1 is characterized in that: A star-shaped discharge valve (10) is provided at the bottom port of the ash hopper.

6. The improved electrostatic precipitator outlet flue configuration structure according to claim 1 is characterized in that: The air inlet of the fan is connected to the four-way pipe joint via an air outlet duct (12), and a filter screen (13) is installed at the opening where the four-way pipe joint (7) is connected to the air inlet of the fan.

7. The improved electrostatic precipitator outlet flue configuration structure according to claim 6, characterized in that: A partition (14) is arranged in the middle of the air outlet duct (12); a vent (15) is arranged between the partition (14) and the air outlet duct (12); the partition (14) is arranged in an up-and-down manner; the bottom end of the air outlet duct (12) where the partition (14) is located is connected to a dust collecting hopper (16); and a second filter screen (17) is arranged between the end of the partition where the vent (15) is located and the side wall of the air outlet duct (12).

8. The improved electrostatic precipitator outlet flue configuration structure according to claim 7, characterized in that: The air outlet duct (12) is connected to a blower (18) for reversely cleaning dust on the partition filter screen 2 and the ash hopper filter screen 1. The blower (18) is connected to the passage between the rear of the partition (14) and the front end of the air inlet of the blower.

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