Water washing dust removal device for steel plant

Abstract

The utility model discloses a water washing dust removal device for a steel plant, which comprises a dust removal tower body, the bottom of the dust removal tower body is connected with a silt discharge pipe, and a cleaning component is arranged above the silt discharge pipe; a first filter plate is arranged above the cleaning assembly, one end of the first filter plate is connected to the inner wall of the dust removal tower body, the other end of the first filter plate is connected to a water filter tank installed on the inner wall of the dust removal tower body in a downward inclined mode, a smoke exhaust pipe is arranged above the water filter tank, and one end of the smoke exhaust pipe penetrates through the first filter plate and then is arranged above the cleaning assembly. The other end of the smoke exhaust pipe penetrates through the tower body of the dust removal tower body and then is connected with smoke exhaust equipment; a spraying assembly is arranged above the smoke exhaust pipe and connected with an external filtering assembly, and the external filtering assembly is connected with the water filtering tank. Sediment dissolved in water can be prevented from floating over, the cleanliness of water entering the water filtering tank is guaranteed, the second water suction pump is prevented from being blocked, the high-pressure spray head is prevented from being blocked through the external filtering assembly, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal equipment, in particular to a water-washing dust removal device for steel mills. Background Technique

[0002] A dust removal device is a device that separates dust from flue gas, also known as a dust collector or dust removal equipment. The performance of a dust collector is expressed by the amount of gas that can be processed, the resistance loss when the gas passes through the dust collector, and the dust removal efficiency. At the same time, the price of the dust collector, the operation and maintenance costs, the length of service life, and the ease of operation and management are also important factors to consider its performance. Dust collectors are commonly used facilities in boilers and industrial production.

[0003] However, the existing dust removal devices use a large amount of water in dust removal, resulting in waste of water resources. Moreover, there is a lot of sediment in the water of the existing dust removal devices, which easily clogs the water pump and spray head.

[0004] Therefore, how to design a structure of a water-washing dust removal device for steel mills has become the problem we need to solve currently. Content of the Utility Model

[0005] The purpose of the utility model is to provide a water-washing dust removal device for steel mills to solve the above problems.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A water-washing dust removal device for steel mills of the utility model includes a dust removal tower body. The bottom of the dust removal tower body is a reduced-diameter sludge discharge port, and a sludge discharge pipe is connected to the sludge discharge port. Above the sludge discharge pipe, there is a cleaning component for cleaning the inner wall of the bottom of the dust removal tower body. The top of the dust removal tower body is a reduced-diameter smoke exhaust port. Above the cleaning component, there is an inclined first filter plate. One end of the first filter plate is connected to the inner wall of the dust removal tower body, and the other end is inclined downward and connected to the bottom of a filter water tank installed on the inner wall of the dust removal tower body. Above the filter water tank, there is a smoke exhaust pipe. One end of the smoke exhaust pipe passes through the first filter plate and is placed above the cleaning component. The other end of the smoke exhaust pipe passes through the tower body of the dust removal tower and is connected to a smoke exhaust device. Above the smoke exhaust pipe, there is a spraying component. The spraying component is connected to an external filtering component, and the external filtering component is connected to the filter water tank.

[0008] Further, an electromagnetic valve is installed on the sludge discharge pipe.

[0009] Furthermore, the cleaning component includes two symmetrically arranged scraping plates. The bottom of each scraping plate is closely attached to the inclined inner wall at the bottom of the dust removal tower body. The two scraping plates are connected by a cross bar. A first rotating shaft is connected to the cross bar. The first rotating shaft is connected to a second rotating shaft through a direction-changing gearbox. The other end of the second rotating shaft penetrates the tower body of the dust removal tower and is connected to the output end of a motor installed on the dust removal tower body. The direction-changing gearbox is installed inside the dust removal tower body through a fixing frame.

[0010] Furthermore, the spraying component includes a spray pipe and a number of high-pressure nozzles installed on the spray pipe. The spray pipe is fixed inside the dust removal tower body. The spray pipe is connected to a first water pump installed on the outer wall of the dust removal tower body. The first water pump is connected to the external filtration component through a water inlet pipe.

[0011] Furthermore, the external filtration component includes a filter barrel and a partition plate installed inside the filter barrel. An inlet and an outlet are respectively installed at the top and bottom of the filter barrel. The partition plate divides the inside of the filter barrel into a clean water area and a filtration area. A second filter plate is provided in the filtration area. A drain pipe is provided in the filtration area. One end of the drain pipe penetrates the second filter plate and is placed below the second filter plate. The other end of the drain pipe is communicated with the filter water tank through a second water pump installed on the outer wall of the dust removal tower body.

[0012] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0013] The present utility model can use the first filter plate to prevent the sediment dissolved in water from floating too much, ensure the cleanliness of the water entering the filter water tank, prevent the second water pump from being blocked, and use the external filtration component to perform secondary filtration on the water from the filter water tank to prevent the high-pressure nozzles from being blocked, effectively protecting the equipment, reducing maintenance, and improving the service life of the equipment. Description of the Drawings

[0014] The following further explains the present utility model with reference to the drawings.

[0015] Figure 1 It is a sectional view of the water-washing dust removal device for a steel mill of the present utility model;

[0016] Description of reference numerals: 1, main body of dust removal tower; 2, sludge discharge pipe; 3, first filter plate; 4, filter water tank; 5, smoke exhaust pipe; 6, electromagnetic valve; 7, scraper; 8, cross bar; 9, first rotating shaft; 10, direction-changing gearbox; 11, second rotating shaft; 12, motor; 13, fixing bracket; 14, spray pipe; 15, high-pressure nozzle; 16, first water pump; 17, water inlet pipe; 18, filter barrel; 19, partition plate; 20, second filter plate; 21, drain pipe; 22, second water pump. Detailed implementation manner

[0017] As Figure 1 shown, a water-washing dust removal device for a steel mill includes a main body 1 of a dust removal tower. The bottom of the main body 1 of the dust removal tower is a reduced-diameter sludge discharge port, and a sludge discharge pipe 2 is connected to the sludge discharge port. An electromagnetic valve 6 is installed on the sludge discharge pipe 2.

[0018] The top of the main body 1 of the dust removal tower is a reduced-diameter smoke exhaust port.

[0019] Above the sludge discharge pipe 2, a cleaning assembly for cleaning the inner wall of the bottom of the main body 1 of the dust removal tower is provided. The cleaning assembly includes two symmetrically arranged scrapers 7. The bottom of the scraper 7 is closely attached to the inclined inner wall of the bottom of the main body 1 of the dust removal tower. The two scrapers 7 are connected by a cross bar 8. A first rotating shaft 9 is connected to the cross bar 8. The first rotating shaft 9 is connected to a second rotating shaft 11 through a direction-changing gearbox 10. The other end of the second rotating shaft 11 penetrates the tower body of the main body 1 of the dust removal tower and is connected to the output end of a motor 12 installed on the main body 1 of the dust removal tower. The direction-changing gearbox 10 is installed inside the main body 1 of the dust removal tower through a fixing bracket 13. By driving the two scrapers 7 to rotate through the motor 12, the sludge attached to the inner wall of the bottom of the main body 1 of the dust removal tower can be scraped off, and the scraped sludge can be discharged from the sludge discharge pipe 2, which is convenient for keeping the inside of the main body 1 of the dust removal tower clean.

[0020] Above the cleaning assembly, a first filter plate 3 is inclined. One end of the first filter plate 3 is connected to the inner wall of the main body 1 of the dust removal tower, and the other end is inclined downward and connected to the bottom of a filter water tank 4 installed on the inner wall of the main body 1 of the dust removal tower. Above the filter water tank 4, a smoke exhaust pipe 5 is provided. One end of the smoke exhaust pipe 5 penetrates the first filter plate 3 and is placed above the cleaning assembly. The other end of the smoke exhaust pipe 5 penetrates the tower body of the main body 1 of the dust removal tower and is connected to a smoke exhaust device. Through the first filter plate 3, the dust dissolved in water can be effectively prevented from floating to the top of the water surface, which is beneficial to maintaining the cleanliness of the upper part of the water, enabling the upper part of the water to flow into the filter water tank 4 and ensuring the cleanliness of the water in the filter water tank 4.

[0021] Above the exhaust pipe 5 is provided with a spray assembly, which is connected to an external filtration assembly. The spray assembly includes a spray pipe 14 and a number of high-pressure nozzles 15 installed on the spray pipe 14. The spray pipe 14 is fixed inside the dust removal tower body 1, and the spray pipe 14 is connected to a first water pump 16 installed on the outer wall of the dust removal tower body 1. The first water pump 16 is connected to the external filtration assembly through a water inlet pipe 17.

[0022] The external filtration assembly includes a filtration barrel 18 and a partition plate 19 installed inside the filtration barrel 18. The top and bottom of the filtration barrel 18 are respectively provided with a water inlet and a water outlet. The partition plate 19 divides the inside of the filtration barrel 18 into a purified water area and a filtration area. A second filter plate 20 is provided in the filtration area, and a drain pipe 21 is provided in the filtration area. One end of the drain pipe 21 passes through the second filter plate 20 and is placed below the second filter plate 20. The other end of the drain pipe 21 is communicated with the filter water tank 4 through a second water pump 22 installed on the outer wall of the dust removal tower body 1. The external filtration assembly performs secondary filtration on the recycled water to prevent the recycled water from blocking the high-pressure nozzles 15.

[0023] The above embodiments are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. A water-washing dust removal device for a steel plant, characterized in that: The invention comprises a dust removal tower body (1), the bottom of the dust removal tower body (1) is a constricted silt discharge port, and the silt discharge port is connected to a silt discharge pipe (2), and a cleaning component for cleaning the inner wall of the bottom of the dust removal tower body (1) is arranged above the silt discharge pipe (2), and the top of the dust removal tower body (1) is a constricted smoke discharge port; a first filter plate (3) arranged obliquely is arranged above the cleaning component, one end of the first filter plate (3) is connected to the inner wall of the dust removal tower body (1), and the other end is connected to the installation position obliquely downward. A smoke exhaust pipe (5) is arranged at the bottom of a water filter trough (4) mounted on the inner wall of the dust removal tower body (1). One end of the smoke exhaust pipe (5) passes through the first filter plate (3) and is arranged above the cleaning component. The other end of the smoke exhaust pipe (5) passes through the tower body of the dust removal tower body (1) and is connected to the smoke exhaust device. A spray component is arranged above the smoke exhaust pipe (5). The spray component is connected to an external filter component, and the external filter component is connected to the water filter trough (4).

2. The water-washing dust removal device for steelmaking plants according to claim 1, characterized in that: The sludge discharge pipe (2) is provided with an electromagnetic valve (6).

3. The water-washing dust removal device for steelmaking plants according to claim 1, characterized in that: The cleaning assembly comprises two symmetrically arranged scrapers (7), the bottom of the scrapers (7) being closely attached to the inclined inner wall at the bottom of the dust removal tower body (1), the two scrapers (7) being connected to each other via a cross bar (8), a first rotating shaft (9) being connected to the cross bar (8), the first rotating shaft (9) being connected to a second rotating shaft (11) via a reversing gear box (10), the other end of the second rotating shaft (11) passing through the body of the dust removal tower body (1) and being connected to an output end of a motor (12) mounted on the dust removal tower body (1), the reversing gear box (10) being mounted inside the dust removal tower body (1) via a fixing frame (13).

4. The water-washing dust removal device for steelmaking plants according to claim 1, characterized in that: The spray assembly comprises a spray pipe (14) and a plurality of high-pressure spray nozzles (15) mounted on the spray pipe (14); the spray pipe (14) is fixed inside the dust removal tower body (1); the spray pipe (14) is connected to a first water pump (16) mounted on the outer wall of the dust removal tower body (1); and the first water pump (16) is connected to the external filter assembly via a water inlet pipe (17).

5. The water-washing dust removal device for steelmaking plants according to claim 4, characterized in that: The external filter assembly comprises a filter barrel (18) and a partition plate (19) installed inside the filter barrel (18), the top and bottom of the filter barrel (18) are respectively provided with a water inlet and a water outlet, the partition plate (19) divides the filter barrel (18) into a clean water area and a filter area, a second filter plate (20) is provided in the filter area, a drain pipe (21) is provided in the filter area, one end of the drain pipe (21) passes through the second filter plate (20) and is arranged below the second filter plate (20), and the other end of the drain pipe (21) is connected to the filter tank (4) through a second water pump (22) installed on the outer wall of the dust removal tower body (1).

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