A double-stage spraying dust removal device for casting ladle

Abstract

The utility model relates to casting device technical field, concretely is a ladle casting two -stage spraying dust removal device, include: the upper portion of dust removal tower body is provided with tower cap, and the top of tower cap is connected with the exhaust pipe, and the one side of dust removal tower body is connected with the air inlet pipe, the filter bin is set up in the one side of water storage bin, and the inside installation of filter bin has the filter plate, and the upper portion of filter bin is provided with the first -stage spraying upper water pipe and two -stage spraying upper water pipe, through setting up two -stage spraying dust removal, makes the high temperature dust containing flue gas that the ladle produces to enter the inside of dust removal tower body through the air inlet pipe, and the inertia collision and the intercepting effect of high -flow water drop that the first -stage spraying nozzle sprays through, high -efficiently removes most of the relatively coarse dust particles in the flue gas, then the fine dust that two -stage spraying nozzle sprays through the mechanism of high -efficiently captures the interception of the first -stage processing and fails to remove, greatly improves the dust removal efficiency, avoids the problem that the dust removal device is damaged due to high temperature, reduces the cost that the dust removal device operates.

Description

Technical Field

[0001] This utility model relates to the field of casting equipment technology, specifically a two-stage spray dust removal device for molten iron ladle casting. Background Technology

[0002] In the metallurgical industry, molten iron ladles are mainly used in processes such as casting and iron mixing. Due to the contact and impact between the high-temperature molten iron and the air, a large amount of high-temperature dust will be generated. This dust has a high temperature, small particle size, high concentration, and certain adhesion and corrosiveness. If it is discharged directly without effective treatment, it will seriously pollute the environment and endanger the health of employees. Currently, the main method for treating this type of dust is baghouse dust collection. Although baghouse dust collection has a high dust removal efficiency, it is sensitive to flue gas temperature fluctuations. High-temperature flue gas can easily burn the filter bags, while high humidity in the flue gas can easily cause dust to cake and stick to the surface of the filter bags, resulting in a large amount of maintenance work and high operating costs. Utility Model Content

[0003] The purpose of this invention is to provide a two-stage spray dust removal device for molten iron ladle casting, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A two-stage spray dust removal device for molten iron ladle casting includes: The dust removal tower body has a tower cap on top, an exhaust pipe connected to the top of the tower cap, an air inlet pipe for introducing high-temperature dust-laden gas connected to one side of the dust removal tower body, and a water storage tank at the bottom of the dust removal tower body. A filter chamber is located on one side of the water storage tank. A filter plate is installed inside the filter chamber, and a primary spray water supply pipe and a secondary spray water supply pipe are installed above the filter chamber. The top ends of the primary spray water supply pipe and the secondary spray water supply pipe are respectively connected to the primary spray pipe and the secondary spray pipe, and the primary spray pipe and the secondary spray pipe are arranged inside the dust removal tower body.

[0005] Preferably, the end of the exhaust pipe away from the tower cap is connected to a dehydration demister, which is used to separate moisture from the gas inside the exhaust pipe. The surface of the dehydration demister is connected to an exhaust pipe and a drain pipe. The end of the exhaust pipe away from the dehydration demister is connected to a fan, and the end of the drain pipe away from the dehydration demister is connected to a water storage tank.

[0006] Preferably, the air inlet pipe is located at the bottom of the side wall of the dust removal tower, and the filter chamber is inclined downward at the end near the dust removal tower.

[0007] Preferably, the water storage tank is connected to the bottom of the dust removal tower.

[0008] Preferably, the filter chamber is connected to the water storage chamber, and a lower filter plate support and an upper filter plate support are fixedly installed inside the filter chamber. The filter plate is detachably installed between the lower filter plate support and the upper filter plate support. A cleaning window cover is provided on one side of the filter chamber. The cleaning window cover is fixedly connected to the filter chamber by a sealing gasket and bolts, and a cleaning window is opened at the position corresponding to the cleaning window cover of the filter chamber.

[0009] Preferably, the bottom of the primary spray water supply pipe and the secondary spray water supply pipe are respectively connected to a first water pump and a second water pump, and the inlet pipes of the first water pump and the second water pump are both inserted into the interior of the filter chamber.

[0010] Preferably, the primary spray pipe is located below the secondary spray pipe, and a primary spray nozzle is fixedly installed on the surface of the primary spray pipe. The primary spray nozzle is a conical nozzle used to spray high-speed water to form a water curtain.

[0011] Preferably, a secondary spray nozzle is fixedly installed on the surface of the secondary spray pipe. The secondary spray nozzle is a multi-hole nozzle used to spray a fine water mist.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up a two-stage spray dust removal system, the high-temperature dust-laden flue gas generated by the molten iron ladle enters the interior of the dust removal tower through the inlet pipe. The high-speed water jet from the first-stage spray nozzles forms a water curtain that rapidly cools the high-temperature dust-laden gas. Through the inertial collision and interception effect of the large-flow water droplets, most of the coarser dust particles in the flue gas are efficiently removed. Then, the water mist sprayed from the second-stage spray nozzles increases the contact area between the water vapor and the particles in the flue gas. Through Brownian diffusion and interception mechanisms, the fine dust that could not be removed in the first stage is efficiently captured. Through graded treatment, the dust in the flue gas is treated in a targeted manner, which greatly improves the dust removal efficiency, avoids the problem of damage to the dust removal device due to high temperature, and reduces the operating cost of the dust removal device.

[0013] 2. By tilting the end of the air inlet pipe close to the dust collector tower downwards, the flue gas is initially sprayed downwards when entering the dust collector tower, and then moves upwards under the suction of the fan. This allows the flue gas to have more diffusion time at the bottom of the dust collector tower, thereby increasing the contact area between the flue gas and water and further improving the filtration efficiency.

[0014] 3. By installing a filter plate inside the filter chamber, water from the water storage tank passes through the bottom of the filter plate and enters the filter chamber, preventing dust deposited at the bottom of the water storage tank from clogging the filter plate and simultaneously filtering the water entering the water storage tank. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the dust removal tower body of this utility model; Figure 3 This is a schematic diagram of the internal structure of the filter chamber of this utility model.

[0016] In the diagram: 1. Dust collector tower body; 11. Tower cap; 12. Exhaust pipe; 13. Inlet pipe; 2. Water storage tank; 3. Filter chamber; 31. Lower filter plate support; 32. Upper filter plate support; 33. Filter plate; 34. Cleaning window cover; 4. Dehydration and demister; 4. Exhaust pipe; 41. Drain pipe; 42. Primary spray water supply pipe; 5. First water pump; 51. Primary spray pipe; 52. Primary spray nozzle; 53. Secondary spray water supply pipe; 6. Second water pump; 61. Secondary spray pipe; 62. Secondary spray nozzle; 63. Detailed Implementation

[0017] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0018] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0019] Please see the appendix Figure 1 To be continued Figure 3 As shown, this utility model provides a two-stage spray dust removal device for molten iron ladle casting, comprising: The dust collector 1 has a tower cap 11 on top and an exhaust pipe 12 connected to the top of the tower cap 11. The end of the exhaust pipe 12 away from the tower cap 11 is connected to a dehydration demister 4. The dehydration demister 4 is used to separate moisture from the gas inside the exhaust pipe 12. The surface of the dehydration demister 4 is connected to an exhaust pipe 41 and a drain pipe 42. The end of the exhaust pipe 41 away from the dehydration demister 4 is connected to a fan. The end of the drain pipe 42 away from the dehydration demister 4 is connected to a water storage tank. One side of the dust collector 1 is connected to an air inlet pipe 13 for introducing high-temperature dust-laden gas. The air inlet pipe 13 is located at the bottom of the side wall of the dust collector 1. The filter chamber 3 is inclined downward at the end near the dust collector 1. The bottom of the dust collector 1 is provided with a water storage tank 2, which is connected to the bottom of the dust collector 1. A filter chamber 3 is located on one side of a water storage chamber 2. A filter plate 33 is installed inside the filter chamber 3. The filter chamber 3 is connected to the water storage chamber 2. A lower filter plate bracket 31 and an upper filter plate bracket 32 ​​are fixedly installed inside the filter chamber 3. The filter plate 33 is detachably installed between the lower filter plate bracket 31 and the upper filter plate bracket 32. A cleaning window cover 34 is provided on one side of the filter chamber 3. The cleaning window cover 34 is fixedly connected to the filter chamber 3 by a sealing gasket and bolts. A cleaning window is opened at the corresponding position of the filter chamber 3 and the cleaning window cover 34. A primary spray water supply pipe 5 and a secondary spray water supply pipe 6 are provided above the filter chamber 3. A first water pump 51 and a second water pump 61 are respectively connected to the bottom of the primary spray water supply pipe 5 and the secondary spray water supply pipe 6. The inlet pipes of the first water pump 51 and the second water pump 61 are both inserted into the interior of the filter chamber 3. The top ends of the primary spray water supply pipe 5 and the secondary spray water supply pipe 6 are respectively connected to the primary spray pipe 52 and the secondary spray pipe 62. The primary spray pipe 52 and the secondary spray pipe 62 are located inside the dust removal tower body 1. The primary spray pipe 52 is located below the secondary spray pipe 62. The primary spray nozzle 53 is fixedly installed on the surface of the primary spray pipe 52. The primary spray nozzle 53 is a conical nozzle used to spray high-speed water flow to form a water curtain. The secondary spray nozzle 63 is fixedly installed on the surface of the secondary spray pipe 62. The secondary spray nozzle 63 is a multi-hole nozzle used to spray fine water mist.

[0020] This utility model proposes a two-stage spray dust removal device for molten iron ladle casting. In use, the air inlet pipe 13 is connected to the exhaust port of the molten iron ladle. A fan draws air from inside the dust removal tower 1 through the exhaust pipe 41, allowing the high-temperature, dust-laden gas generated by the molten iron ladle to enter the interior of the dust removal tower 1 through the air inlet pipe 13. The first water pump 51 and the second water pump 61 extract water from the filter chamber 3, which is then transported through the primary spray water supply pipe 5 and the secondary spray water supply pipe 6 to the interior of the primary spray pipe 52 and the secondary spray pipe 62, and sprayed out through the secondary spray nozzles 63. The high-speed water jet from the primary spray nozzle 53 forms a water curtain that rapidly cools the high-temperature dust-laden gas. Through the inertial collision and interception effect of the large-flow water droplets, most of the coarser dust particles in the flue gas are efficiently removed. Then, the water mist sprayed from the secondary spray nozzle 63 increases the contact area between the water vapor and the particles in the flue gas. Through Brownian diffusion and interception mechanisms, the fine dust that could not be removed in the primary treatment is efficiently captured. Through graded treatment, the dust in the flue gas is treated in a targeted manner, which greatly improves the dust removal efficiency, avoids the problem of dust removal device damage caused by high temperature, and reduces the operating cost of the dust removal device.

[0021] As a further improvement of this utility model, by tilting the end of the air inlet pipe 13 close to the dust removal tower body 1 downward, the flue gas is sprayed downward in the initial stage of entering the dust removal tower body 1, and then moves upward under the suction of the fan, so that the flue gas has more diffusion time at the bottom of the dust removal tower body 1, thereby increasing the contact area between the flue gas and water and further improving the filtration efficiency.

[0022] As a further improvement of this utility model, by setting a filter plate 33 inside the filter chamber 3, the water inside the water storage chamber 2 passes through the bottom of the filter plate 33 and enters the interior of the filter chamber 3, which avoids the dust that settles at the bottom of the water storage chamber 2 from clogging the filter plate 33, and at the same time plays a role in filtering the water entering the water storage chamber 2.

[0023] Working Principle: Molten iron ladles are mainly used in casting and iron mixing processes. Due to the contact and impact between the high-temperature molten iron and air, a large amount of high-temperature dust is generated. This utility model proposes a two-stage spray dust removal device for molten iron ladle casting. In use, the air inlet pipe 13 is connected to the exhaust port of the molten iron ladle. The fan draws air from inside the dust removal tower 1 through the exhaust pipe 41, allowing the high-temperature dust-laden gas generated by the molten iron ladle to enter the interior of the dust removal tower 1 through the air inlet pipe 13. The first water pump 51 and the second water pump 61 extract the water from inside the filter chamber 3, and then the water is discharged through the primary spray water pipe. Water is supplied to the interior of the primary spray pipe 52 and the secondary spray pipe 62 via the secondary spray nozzle 63 and the secondary spray nozzle 63. The high-speed water flow from the primary spray nozzle 53 forms a water curtain that rapidly cools the high-temperature dust-laden gas. Through the inertial collision and interception effect of the large flow of water droplets, most of the coarser dust particles in the flue gas are efficiently removed. Then, the water mist sprayed from the secondary spray nozzle 63 increases the contact area between the water vapor and the particles in the flue gas. Through the Brownian diffusion and interception mechanism, the fine dust that could not be removed in the primary treatment is efficiently captured.

[0024] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; under the concept of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0025] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A two-stage spray dust removal device for molten iron ladle casting, characterized in that, include: The dust removal tower body (1) is provided with a tower cap (11) on the top of the dust removal tower body (1), and an exhaust pipe (12) is connected to the top of the tower cap (11). An air inlet pipe (13) for introducing high-temperature dust-containing gas is connected to one side of the dust removal tower body (1). A water storage tank (2) is provided at the bottom of the dust removal tower body (1). The filter chamber (3) is located on one side of the water storage chamber (2). The filter chamber (3) is equipped with a filter plate (33). A primary spray water supply pipe (5) and a secondary spray water supply pipe (6) are provided above the filter chamber (3). The top ends of the primary spray water supply pipe (5) and the secondary spray water supply pipe (6) are respectively connected to the primary spray pipe (52) and the secondary spray pipe (62), and the primary spray pipe (52) and the secondary spray pipe (62) are located inside the dust removal tower body (1).

2. The double-stage spray dust removal device for molten iron ladle casting according to claim 1, characterized in that, The exhaust pipe (12) is connected to a dehydration demister (4) at the end away from the tower cap (11). The dehydration demister (4) is used to separate the moisture in the gas inside the exhaust pipe (12). The surface of the dehydration demister (4) is connected to an exhaust pipe (41) and a drain pipe (42). The exhaust pipe (41) is connected to a fan at the end away from the dehydration demister (4). The drain pipe (42) is connected to a water storage tank at the end away from the dehydration demister (4).

3. The double-stage spray dust removal device for molten iron ladle casting according to claim 2, characterized in that, The air inlet pipe (13) is located at the bottom of the side wall of the dust removal tower (1), and the filter chamber (3) is inclined downward at the end near the dust removal tower (1).

4. The double-stage spray dust removal device for molten iron ladle casting according to claim 3, characterized in that, The water storage tank (2) is connected to the bottom of the dust removal tower (1).

5. The double-stage spray dust removal device for molten iron ladle casting according to claim 4, characterized in that, The filter chamber (3) is connected to the water storage chamber (2). The filter chamber (3) is fixedly installed with a lower filter plate bracket (31) and an upper filter plate bracket (32). The filter plate (33) is detachably installed between the lower filter plate bracket (31) and the upper filter plate bracket (32). A cleaning window cover (34) is provided on one side of the filter chamber (3). The cleaning window cover (34) is fixedly connected to the filter chamber (3) by a sealing gasket and bolts. A cleaning window is opened at the position corresponding to the cleaning window cover (34) of the filter chamber (3).

6. The double-stage spray dust removal device for molten iron ladle casting according to claim 5, characterized in that, The bottom of the primary spray water supply pipe (5) and the secondary spray water supply pipe (6) are respectively connected to a first water pump (51) and a second water pump (61), and the inlet pipes of the first water pump (51) and the second water pump (61) are both inserted into the interior of the filter chamber (3).

7. The double-stage spray dust removal device for molten iron ladle casting according to claim 6, characterized in that, The primary spray pipe (52) is located below the secondary spray pipe (62). A primary spray nozzle (53) is fixedly installed on the surface of the primary spray pipe (52). The primary spray nozzle (53) is a conical nozzle used to spray high-speed water flow to form a water curtain.

8. The double-stage spray dust removal device for molten iron ladle casting according to claim 7, characterized in that, The secondary spray pipe (62) is fixedly mounted with a secondary spray nozzle (63), which is a multi-hole nozzle used to spray fine water mist.

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