A sootblower for a flapper valve

Abstract

The application relates to a soot blowing device for a flap valve, which comprises a first partition, a second partition, a cover plate and a valve port arranged on the second partition, a sealing surface matched with the cover plate is arranged at the valve port, a return pipe is arranged around the sealing surface, a plurality of blowing holes towards the sealing surface are uniformly distributed on the inner side of the return pipe, an air inlet pipe is further arranged on the return pipe and communicates with the return pipe, and the air inlet pipe is connected with an air source through a connecting pipe. The return pipe is arranged around the sealing surface, a plurality of blowing holes arranged at a matching interval are arranged, the sealing surface is blown, dust on the sealing surface is effectively removed, and vacuum leakage caused by the cover plate being not tightly closed due to impurities is avoided.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical smelting technology, and in particular to a soot blowing device for a flap valve. Background Technology

[0002] In vacuum melting and casting processes, the melting chamber and casting chamber are typically separated by a flap valve (cover valve). For example, existing patent CN220750784U discloses a vacuum furnace cover valve, including a cover plate, a first partition ring, a second partition, and a valve port. The second partition is equipped with a driving mechanism, which drives the cover plate to close onto or separate from the valve port. The valve port has a sealing surface that mates with the cover plate. Furthermore, the valve port and cover plate are usually sealed with a sealing flange, with the sealing surface being the upper end face of the sealing flange.

[0003] After melting, the flap valve opens for casting. When the flap valve opens, the cover plate and retaining ring switch positions. During this switching process, fine dust can easily adhere to the sealing surface of the valve port. When the cover plate closes again, the presence of dust and impurities on the sealing surface may cause incomplete sealing, leading to vacuum leakage and affecting process stability and product quality. Traditional solutions often involve manual cleaning or increasing the thickness of the sealing material. However, manual cleaning is inefficient and difficult to thoroughly clean, while increasing the thickness of the sealing material reduces the valve's operational flexibility and accelerates wear. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a soot blowing device for a flap valve.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a soot blowing device for a flap valve, including a first partition, a second partition, a cover plate and a valve port provided on the second partition plate. The valve port is provided with a sealing surface that cooperates with the cover plate. A loop pipe is provided around the sealing surface. Multiple purge holes facing the sealing surface are evenly distributed on the inner side of the loop pipe. An air inlet pipe is also provided on the loop pipe and connected to it. The air inlet pipe is connected to an air source through a connecting pipe.

[0006] As a preferred embodiment, the loop-shaped pipeline is arranged on the second partition plate, and connecting plates are symmetrically arranged on both sides of the loop-shaped pipeline. The connecting plates are connected to the second partition plate by bolts.

[0007] As a preferred embodiment, the height of the loop pipe is lower than the height of the sealing surface, and the purge hole is tilted at 45 degrees toward the sealing surface.

[0008] As a preferred embodiment, the distance between two adjacent purge holes is 8-10 mm, and the diameter of the purge holes is 0.4-0.5 mm.

[0009] As a preferred embodiment, the intake pipe is L-shaped and includes a first horizontal section connected to a loop pipe and a second horizontal section vertically connected to the first horizontal section. The end of the second horizontal section is provided with a downwardly inclined section, which is connected to a connecting pipe.

[0010] As a preferred embodiment, there are two intake pipes, which are symmetrically arranged on both sides of the loop-shaped pipeline. The connecting pipe includes two branch pipes and a main pipe. The two branch pipes are respectively connected to the two intake pipes, and the free ends of the two branch pipes are connected to the main pipe, which is connected to the air source.

[0011] As a preferred embodiment, the main pipe is equipped with an electromagnetic pulse valve.

[0012] The beneficial effects of this application are as follows: 1. The circular pipeline of this application is arranged around the sealing surface, and with multiple purge holes spaced at intervals, the sealing surface is purged, effectively removing dust from the sealing surface and avoiding vacuum leakage caused by impurities leading to incomplete closure of the cover plate. Compared with traditional manual cleaning, the cleaning efficiency is greatly improved.

[0013] 2. Two air intake pipes are symmetrically arranged on both sides of the loop pipe to ensure balanced air pressure in the loop pipe and eliminate blind spots in cleaning.

[0014] 3. The electromagnetic pulse valve enables on-demand blowing, significantly reducing energy consumption costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0017] Figure 3 This is a schematic diagram of the working state installation of this utility model.

[0018] Diagram markings: 1. U-shaped pipe, 11. Connecting plate, 12. Purge hole, 2. Inlet pipe, 21. First horizontal section, 22. Second horizontal section, 23. Inclined section, 3. First partition, 31. Second partition, 4. Cover plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] Please see Figure 1-3 This utility model provides a soot blowing device for a flap valve, including a first partition 3, a second partition 31, a cover plate 4, and a valve port disposed on the second partition 31. The valve port is provided with a sealing surface that cooperates with the cover plate 4. A loop pipe 1 is provided around the sealing surface. Multiple purge holes 12 facing the sealing surface are evenly distributed on the inner side of the loop pipe 1. An air inlet pipe 2 connected to the loop pipe 1 is also provided. The air inlet pipe 2 is connected to an air source through a connecting pipe.

[0021] The loop-shaped pipe 1 is installed on the second partition 31. Connecting plates 11 are symmetrically arranged on both sides of the loop-shaped pipe 1. There are two connecting plates 11 on each side. The connecting plates 11 are connected to the second partition 31 by bolts to ensure that the loop-shaped pipe 1 is installed firmly and to avoid displacement due to pipe vibration.

[0022] The height of the loop pipe 1 is lower than the height of the sealing surface, and the purge hole 12 is inclined at 45 degrees toward the sealing surface, so that the purge airflow is precisely applied to the sealing surface, improving cleaning efficiency. The distance between two adjacent purge holes 12 is 8-10mm, and the diameter of the purge hole 12 is 0.4-0.5mm.

[0023] Specifically, the intake pipe 2 is L-shaped and includes a first horizontal section 21 connected to the loop pipe 1 and a second horizontal section 22 perpendicularly connected to the first horizontal section 21. The first horizontal section 21 and the second horizontal section 22 are located in the same plane. The end of the second horizontal section 22 is provided with a downwardly inclined section 23. The angle between the inclined section 23 and the second horizontal section 22 is 120 degrees, and the inclined section 23 is connected to the connecting pipe. The first horizontal section 21, the second horizontal section 22, and the inclined section 23 are integrally formed. Since the first partition 3 and the second partition 31 form a certain angle, the inclined section 23 is provided to avoid interference with the first partition 3.

[0024] In addition, there are two air intake pipes 2, symmetrically arranged on both sides of the loop pipe 1. The dual air intake pipe structure makes the air pressure distribution within the loop pipe 1 more uniform and the purging effect more stable. The connecting pipe includes two branch pipes and a main pipe. The two branch pipes are respectively connected to the two air intake pipes 2, and the free ends of the two branch pipes are connected to the main pipe, which is connected to the air source. The main pipe is equipped with an electromagnetic pulse valve.

[0025] In addition, it should be noted that the existing flap valve is located between the melting chamber and the casting chamber and is in a safe vacuum environment. Therefore, the dust blowing device of this application completes the dust blowing of the sealing surface in a safe vacuum environment.

[0026] This application's main pipe connects to the factory's compressed air pipeline network. The compressed air pressure is 0.6 MPa. The gas used for purging can be nitrogen, argon, or other gases, and the appropriate gas is selected according to the requirements of the operating environment. After pouring, the cover plate 4 is placed over the valve port. Before the cover plate 4 closes, high-pressure gas is sprayed out from the purging hole 12 through the loop pipe 1 to purge the sealing surface, effectively removing dust from the sealing surface.

[0027] In addition, before the cover plate 4 is closed and when it is 9-10mm away from the sealing surface, the gas ejected from the blow hole 12 can simultaneously blow the lower end face (the end face in contact with the sealing surface) and the sealing surface of the cover plate 4 to remove dust.

[0028] Of course, this utility model is not limited to the embodiments described above. Several other embodiments based on the design concept of this utility model are also provided below.

[0029] For example, in other embodiments, unlike the embodiments described above, the distance between two adjacent purge holes 12 is 10 mm, and the diameter of the purge hole 12 is 0.5 mm.

[0030] For example, in other embodiments, unlike the embodiments described above, the main pipe is equipped with an electromagnetic switching valve.

[0031] It should be noted that the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A soot blowing device for a flap valve, comprising a first partition (3), a second partition (31), a cover plate (4), and a valve port disposed on the second partition (31), wherein the valve port is provided with a sealing surface that mates with the cover plate (4), characterized in that, A loop-shaped pipe (1) is provided around the sealing surface. Multiple purge holes (12) facing the sealing surface are evenly distributed on the inner side of the loop-shaped pipe (1). An air inlet pipe (2) connected to the loop-shaped pipe (1) is also provided. The air inlet pipe (2) is connected to the air source through a connecting pipe.

2. The soot blowing device for a flap valve according to claim 1, characterized in that, The loop pipe (1) is installed on the second partition (31), and connecting plates (11) are symmetrically provided on both sides of the loop pipe (1). The connecting plates (11) are connected to the second partition (31) by bolts.

3. A soot blowing device for a flap valve according to claim 1, characterized in that, The height of the loop pipe (1) is lower than the height of the sealing surface, and the purge hole (12) is set at an angle of 45 degrees toward the sealing surface.

4. A soot blowing device for a flap valve according to claim 1, characterized in that, The distance between two adjacent purge holes (12) is 8-10 mm, and the diameter of the purge hole (12) is 0.4-0.5 mm.

5. A soot blowing device for a flap valve according to claim 1, characterized in that, The intake pipe (2) is L-shaped and includes a first horizontal part (21) connected to the loop pipe (1) and a second horizontal part (22) vertically connected to the first horizontal part (21). The end of the second horizontal part (22) is provided with a downwardly inclined part (23), which is connected to the connecting pipe.

6. A soot blowing device for a flap valve according to claim 1, characterized in that, There are two intake pipes (2). The two intake pipes (2) are symmetrically arranged on both sides of the loop pipe (1). The connecting pipe includes two branch pipes and a main pipe. The two branch pipes are connected to the two intake pipes (2) respectively. The free ends of the two branch pipes are connected to the main pipe, and the main pipe is connected to the air source.

7. A soot blowing device for a flap valve according to claim 6, characterized in that, The main pipe is equipped with an electromagnetic pulse valve.

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