Reverberatory furnace flue butterfly valve prefabricated part

Abstract

The utility model discloses a reverberatory furnace flue butterfly valve prefabricated part which comprises a butterfly valve prefabricated part, a flue valve, a valve rod and a linkage assembly, the flue valve is installed in a flue, the butterfly valve prefabricated part is installed in the flue valve through the valve rod, and the linkage assembly controls rotation of the valve rod and can control the butterfly valve prefabricated part to do opening and closing motion. The prefabricated part body is matched with a linkage assembly of a flue valve through a valve rod to control a butterfly valve to rotate to achieve opening and closing movement, a second gear is driven by a handle to rotate, a first gear is made to rotate, the valve rod drives the butterfly valve prefabricated part to block a flue, and the flue gas flow of the flue is controlled by monitoring the air pressure in the furnace in real time and controlling opening and closing of the butterfly valve. On one hand, the butterfly valve prefabricated part is resistant to smoke corrosion, the service life is greatly prolonged, on the other hand, the periodic maintenance and replacement process is greatly simplified, time and labor are saved, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates specifically to a flue butterfly valve prefabricated part of a reverberatory furnace. Background Art

[0002] In the non-ferrous metal smelting industry, the reverberatory furnace is a chamber flame furnace, in which the fuel burns in the combustion chamber, and the generated flame is reflected by the furnace top to the heating chamber to heat the blank. The heat transfer method in the furnace is not only by the reflection of the flame, but more importantly, by the radiation heat transfer of the furnace top, furnace wall and hot gas. The reverberatory furnace has the advantages of simple structure, convenient operation, easy control, strong adaptability to raw materials and fuels, and less water consumption in production. Therefore, the reverberatory furnace has been widely used in the smelting of non-ferrous metals. The reverberatory furnace is composed of the furnace base, furnace bottom, furnace wall, furnace top, charging port, product discharge port, flue and other parts. Its auxiliary equipment includes charging device, blast device, smoke exhaust device and waste heat utilization device. For the reverberatory furnace, during the melting period of non-ferrous metals, the temperature in the furnace is generally controlled at 1100℃-1200℃, and the temperature of the flue gas out of the furnace is the atmosphere temperature in the furnace. Therefore, in the face of the high temperature and corrosion of high-temperature flue gas, a certain strength must be required to control the furnace pressure, and excellent flue valves are extremely important.

[0003] At present, the existing flue butterfly valve of the reverberatory furnace has only two options during use: closed and open. The opening and closing degree of the butterfly valve cannot be controlled, so the flue gas flow cannot be controlled, causing the butterfly valve prefabricated parts to be corroded by the flue gas for a long time, reducing the service life. Utility Model Content

[0004] The utility model aims to provide a reverberatory furnace flue butterfly valve prefabricated component to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reverberatory furnace flue butterfly valve prefabricated component, comprising a butterfly valve prefabricated component, a flue valve, a valve stem and a linkage assembly, the flue valve being installed in the flue, the butterfly valve prefabricated component being installed in the flue valve through the valve stem, the linkage assembly controlling the rotation of the valve stem, and being able to control the butterfly valve prefabricated component to perform opening and closing movements.

[0006] Preferably, a steel structure is provided in the butterfly valve prefabricated part, and the steel structure comprises a stainless steel pipe provided in the butterfly valve prefabricated part, and a stainless steel anchor hook for supporting and fixing the external castable is welded on the outer side of the stainless steel pipe.

[0007] Preferably, the butterfly valve prefabricated component is made of a mixture of special performance refractory material and high-strength steel fiber.

[0008] Preferably, the valve stem passes through the butterfly valve prefabricated part and is connected to the steel structure, and the butterfly valve prefabricated part is oval in shape.

[0009] Preferably, the linkage assembly comprises a shell provided on the flue valve, the shell is T-shaped, the valve stem is inserted into the shell and connected to a first gear, and a second gear is meshed on the outer side of the first gear.

[0010] Preferably, a connecting rod is connected to the outer side of the second gear, the connecting rod extends to the outside of the shell through the through hole, and is connected to a handle for rotating the connecting rod.

[0011] The technical effects and advantages of the utility model are as follows: the reverberatory furnace flue butterfly valve prefabricated part is made of a special performance silicon carbide refractory material with a certain proportion of high-strength steel fiber mixed, and is supported by a steel structure inside. The reasonable material makes the high temperature and corrosion resistance very good. The butterfly valve prefabricated part is an oblate structure to facilitate the blocking of the flue. The high-strength stainless steel pipe of the butterfly valve prefabricated part plays a supporting and external device connection role. The prefabricated part body controls the rotation of the butterfly valve through the linkage assembly of the valve stem and the flue valve to achieve the opening and closing movement. The second gear is driven to rotate by the handle to rotate the first gear, so that the valve stem drives the butterfly valve prefabricated part to block the flue. The opening and closing of the butterfly valve is controlled by real-time monitoring of the air pressure in the furnace to control the flue gas flow rate through the flue. The butterfly valve prefabricated part is resistant to flue gas corrosion and greatly extends its service life. On the other hand, it greatly simplifies the regular maintenance and replacement process, saves time and effort, and greatly improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of a butterfly valve prefabricated component of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the steel structure of the utility model;

[0015] Figure 4 It is a schematic diagram of the structure of the housing of the utility model;

[0016] Figure 5 It is a cross-sectional view inside the shell of the utility model.

[0017] In the figure: 1. Butterfly valve prefabricated part; 2. Flue valve; 3. Valve stem; 4. Stainless steel pipe; 5. Stainless steel anchor hook; 6. Shell; 7. First gear; 8. Second gear; 9. Connecting rod; 10. Handle. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] In order to extend the service life, refer to Figure 1 , Figure 2 and Figure 3 As shown, it includes a butterfly valve prefabricated part 1, a flue valve 2, a valve stem 3 and a linkage assembly. The flue valve 2 is installed in the flue. The butterfly valve prefabricated part 1 is installed in the flue valve 2 through the valve stem 3. The linkage assembly controls the rotation of the valve stem 3, and can control the butterfly valve prefabricated part 1 to make an opening and closing movement. The butterfly valve prefabricated part 1 is made of a special performance silicon carbide refractory material with a certain proportion of high-strength steel fiber added, and is supported by a steel structure inside. Reasonable materials make it very resistant to high temperature and corrosion. The butterfly valve prefabricated part 1 is an oblate structure, so that the flue can be blocked. The high-strength stainless steel pipe 4 of the valve preform 1 plays a supporting and external device connection role. The preform body cooperates with the linkage assembly of the flue valve 2 through the valve stem 3 to control the rotation of the butterfly valve to achieve the opening and closing movement. The second gear 8 is driven to rotate by the handle 10 to rotate the first gear 7, so that the valve stem 3 drives the butterfly valve preform 1 to block the flue. By real-time monitoring of the air pressure in the furnace, the opening and closing of the butterfly valve is controlled to control the flue gas flow. The butterfly valve preform 1 is resistant to flue gas corrosion, which greatly extends its service life. On the other hand, it greatly simplifies the regular maintenance and replacement process, saving time and effort.

[0020] In order to make the butterfly valve prefabricated part 1 resistant to high temperature and smoke corrosion, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a steel structure is arranged inside the butterfly valve prefabricated part 1, and the steel structure includes a stainless steel pipe 4 arranged inside the butterfly valve prefabricated part 1, and a stainless steel anchor hook 5 for supporting and fixing the external castable is welded on the outside of the stainless steel pipe 4. The interior of the butterfly valve prefabricated part 1 is supported by the steel structure to improve the strength of the butterfly valve prefabricated part 1. The butterfly valve prefabricated part 1 is made of a mixture of special performance refractory materials and high-strength steel fibers. It is made of high-strength steel fibers and special performance refractory materials. On the one hand, its reasonable materials make it resistant to high temperatures and smoke corrosion, greatly extending its service life. The valve stem 3 runs through the butterfly valve prefabricated part 1 and is connected to the steel structure. The butterfly valve prefabricated part 1 is oblate, and the oblate butterfly valve prefabricated part 1 fits better with the inside of the flue to increase the barrier to the flue. The linkage assembly includes a shell 6 arranged on the flue valve 2, the shell 6 is T-shaped, the valve stem 3 is inserted into the shell 6 and is connected to a first gear 7, a second gear 8 is meshed on the outer side of the first gear 7, a connecting rod 9 is connected to the outer side of the second gear 8, the connecting rod 9 extends to the outside of the shell 6 through a through hole, and is connected to a handle 10 for rotating the connecting rod 9. By rotating the handle 10, the connecting rod 9 is driven to rotate, so that the second gear 8 drives the first gear 7 to rotate, and the valve stem 3 drives the butterfly valve preform 1 to follow the rotation, thereby realizing the blocking of the flue.

[0021] When in use, first install the flue valve 2 in the flue, and connect the stainless steel pipe 4 in the butterfly valve preform 1 with the valve stem 3. By real-time monitoring the air pressure in the furnace, when it is necessary to control the flue gas flow in the flue, turn the handle 10 to drive the connecting rod 9 to rotate, and the second gear 8 follows the rotation. The second gear 8 is meshed with the first gear 7, so that the second gear 8 drives the rotation of the first gear 7, and the valve stem 3 drives the butterfly valve preform 1 to follow the rotation. After the rotation of the butterfly valve preform 1 is completed, the blocking size of the flue can be controlled to be changed.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention.

Claims

1. A reverberatory furnace flue butterfly valve prefabricated component, characterized in that: The invention comprises a butterfly valve prefabricated part (1), a flue valve (2), a valve stem (3) and a linkage assembly, wherein the flue valve (2) is installed in the flue, the butterfly valve prefabricated part (1) is installed in the flue valve (2) via the valve stem (3), the linkage assembly controls the rotation of the valve stem (3) and can control the butterfly valve prefabricated part (1) to make an opening and closing movement, a steel structure is arranged in the butterfly valve prefabricated part (1), the steel structure comprises a stainless steel pipe (4) arranged in the butterfly valve prefabricated part (1), and a stainless steel anchor hook (5) for supporting and fixing an external castable is welded on the outer side of the stainless steel pipe (4).

2. The reverberatory furnace flue butterfly valve prefabricated component according to claim 1 is characterized in that: The valve stem (3) passes through the butterfly valve prefabricated part (1) and is connected to the steel structure; the butterfly valve prefabricated part (1) is in an oblate shape.

3. The reverberatory furnace flue butterfly valve prefabricated component according to claim 1 is characterized in that: The linkage assembly comprises a shell (6) arranged on the flue valve (2), the shell (6) being T-shaped, the valve stem (3) being inserted into the shell (6) and connected to a first gear (7), and a second gear (8) being meshed on the outer side of the first gear (7).

4. The reverberatory furnace flue butterfly valve prefabricated component according to claim 3 is characterized in that: The outer side of the second gear (8) is connected to a connecting rod (9), the connecting rod (9) extends to the outside of the housing (6) through the through hole, and is connected to a handle (10) for rotating the connecting rod (9).

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