Exhaust treatment device for electroslag furnace

Abstract

The utility model discloses an exhaust treatment device for an electroslag furnace, and particularly relates to the technical field of electroslag furnaces, which comprises an air inlet cover communicated with an exhaust pipe of the electroslag furnace, one end part of the air inlet cover is communicated with a fixed shell, a fan is arranged in the fixed shell, the other end of the fixed shell is communicated with a first air delivery pipe, and the end part of the first air delivery pipe is communicated with a box body; a water tank is arranged on one side of the box body, one end of the box body communicates with a second gas conveying pipe inserted into the water tank, an inner wall cleaning mechanism is arranged at the bottom of the water tank, the top of the water tank communicates with a third gas conveying pipe, and the end of the third gas conveying pipe communicates with a connecting pipe; and one end of the connecting pipe communicates with a liquid storage tank. The filter plate is detachable and can also be fixed, the filter plate can be conveniently taken out to be cleaned or replaced by loosening the locking bolts, the inner wall of the water tank can be cleaned, and adhesion of adhesive substances is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electroslag furnaces, and more specifically, to an exhaust gas treatment device for an electroslag furnace. Background Art

[0002] The electroslag furnace is one of the important smelting equipment for producing high-quality alloy steel. It can improve the purity of the metal and improve and enhance the comprehensive performance of the metal. The electroslag furnace is a special smelting equipment that uses remelting current to generate heat energy to melt the consumable electrode inserted into the slag pool. After the molten metal droplets are cleaned by the slag liquid, they are crystallized into electroslag ingots in a water-cooled crystallizer. The large amount of fluorine-containing flue gas generated during the production process of the electroslag furnace will pollute the atmospheric environment, and eventually the fluorine gas will still be emitted into the air, which not only pollutes the workshop environment, but also has a certain impact on the health of employees. Therefore, the flue gas generated during the production process of the electroslag furnace needs to be treated.

[0003] A search revealed a Chinese patent application with publication number CN216935452U, which discloses an exhaust gas treatment device for an electroslag furnace. This device filters dust particles from the flue gas through a filter plate. Fluorine gas enters the inner cavity of a water storage tank through a connecting pipe, where it reacts with the water flowing there to form hydrogen fluoride. The treated hydrogen fluoride then enters the inner cavity of a liquid storage tank through a guide pipe, where it reacts with the clarified lime water in the tank to form a non-toxic calcium fluoride precipitate. The fluorine gas is then treated and discharged, minimizing environmental pollution.

[0004] In combination with the above-mentioned exhaust gas treatment device for electroslag furnace, the filter plate structure in its structural design is not convenient to disassemble and clean during actual use. After long-term use, some adhesives and dust particles attached to the surface of the filter plate can easily cause the filter plate to be blocked, affecting its use. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides an exhaust gas treatment device for an electroslag furnace.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: an exhaust gas treatment device for an electroslag furnace, comprising an air intake hood connected to an exhaust pipe of the electroslag furnace, one end of the air intake hood being connected to a fixed shell, a fan being installed inside the fixed shell, the other end of the fixed shell being connected to a first air supply pipe, an end of the first air supply pipe being connected to a box body, a slag discharge port being provided at the bottom of the box body, and a filter mechanism being installed inside the box body, a water tank being provided on one side of the box body, and one end of the box body being connected to a second air supply pipe inserted into the water tank, an inner wall cleaning mechanism being provided at the bottom of the water tank, and a third air supply pipe being connected to the top of the water tank, an end of the third air supply pipe being connected to a connecting pipe, one end of the connecting pipe being connected to a liquid storage tank, the bottom end of the liquid storage tank being connected to a sealing cover, and the top of the liquid storage tank being fixedly connected to a fixing seat, a first motor being installed on the top of the fixing seat, an output end of the first motor being vertically downwardly connected to a stirring shaft, the bottom of the stirring shaft extending into the interior of the liquid storage tank, and a liquid adding pipe being connected to the top of the liquid storage tank.

[0007] As a further improvement of the technical solution of the present utility model, the filtering mechanism includes a filter plate obliquely inserted into the inside of the box, a filter screen is provided inside the filter plate, and the top of the filter plate is located above the box and is fixedly connected to an end block, a pull ring is provided on the top of the end block, a placement seat is provided at the top of the box corresponding to the bottom position of the end block, a locking bolt is connected to the top of the end block, and a stop block is provided on the bottom inner wall of the box on one side of the filter plate.

[0008] As a further improvement of the technical solution of the present invention, a rubber pad is provided on the lower surface of the end block, screw holes are provided at the connection points of the end block and the internal part of the placement seat corresponding to the locking bolts, and through holes for inserting the filter plate are provided on the top of the box body and the internal part of the placement seat.

[0009] As a further improvement of the technical solution of the present invention, a water inlet and a water outlet are respectively provided on the top and the bottom of the water tank, and end covers are threadedly connected to the water inlet and the water outlet.

[0010] As a further improvement of the technical solution of the present invention, the inner wall cleaning mechanism includes a second motor fixedly connected to the bottom of the water tank, the output end of the second motor is vertically connected to a drive shaft, the end of the drive shaft extends to the interior of the water tank and is fixedly connected to an L-shaped rod, and the outer wall of the L-shaped rod is evenly provided with bristles.

[0011] As a further improvement of the technical solution of the present invention, the second motor is fixedly connected to the bottom of the water tank by screws, a bearing is installed at the connection between the bottom of the water tank and the drive shaft, and a sealing ring is installed on the bottom inner wall of the water tank corresponding to the outside of the drive shaft.

[0012] As a further improvement of the technical solution of the present invention, the fixing seat is fixed to the outer wall of the liquid storage tank by welding, and the bottom of the first motor is fixed to the top of the fixing seat by screws.

[0013] Beneficial effects of the utility model:

[0014] 1. By setting up a filtering mechanism, when the gas passes through the interior of the box, it is filtered by the filter mesh on the filter plate. Since the filter plate is set at an angle and the slag discharge port is set below the filter plate, the dust particles falling during the filtering process fall into the inside of the slag discharge port. The dust particles can be discharged by opening the cover at the bottom of the slag discharge port. At the same time, the filter plate is detachable and can also be fixed. The filter plate can be easily taken out for cleaning or replacement by loosening the locking bolts.

[0015] 2. By setting up an inner wall cleaning mechanism, when in use, the second motor is started to drive the drive shaft to rotate, and then the L-shaped rod is driven to rotate, and the bristles on the L-shaped rod are used to clean the inner wall of the water tank to reduce the adhesion of adhesives. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 For this utility model Figure 1 Enlarged view of part A.

[0018] Figure 3 It is a structural schematic diagram of the filter plate in this utility model.

[0019] Figure 4 It is a structural schematic diagram of the inner wall cleaning mechanism in the utility model.

[0020] The accompanying drawings are marked as follows: 1. Air intake hood; 2. Fixed shell; 3. Fan; 4. First air pipe; 5. Box body; 6. Slag discharge port; 7. Second air pipe; 8. Water tank; 9. Third air pipe; 10. Connecting pipe; 11. Liquid storage tank; 12. Sealing cover; 13. Fixed seat; 14. First motor; 15. Stirring shaft; 16. Liquid adding pipe; 17. Stop block; 18. Filter plate; 19. End block; 20. Placement seat; 21. Pull ring; 22. Locking bolt; 23. Rubber pad; 24. Through hole; 25. Screw hole; 26. Second motor; 27. Drive shaft; 28. L-shaped rod; 29. ​​Brush; 181. Filter screen. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] As attached Figure 1-4 The exhaust gas treatment device for an electroslag furnace shown in the figure includes an air intake hood 1 connected to the exhaust pipe of the electroslag furnace, one end of the air intake hood 1 is connected to a fixed shell 2, a fan 3 is installed inside the fixed shell 2, the other end of the fixed shell 2 is connected to a first air supply pipe 4, the end of the first air supply pipe 4 is connected to a box body 5, a slag discharge port 6 is provided at the bottom of the box body 5, and a filter mechanism is installed inside the box body 5, a water tank 8 is provided on one side of the box body 5, and one end of the box body 5 is connected to a second air supply pipe 7 inserted into the water tank 8, and a filter mechanism is installed at the bottom of the water tank 8. There is an inner wall cleaning mechanism, and the top of the water tank 8 is connected to the third air pipe 9, the end of the third air pipe 9 is connected to the connecting pipe 10, one end of the connecting pipe 10 is connected to the liquid storage tank 11, the bottom end of the liquid storage tank 11 is connected to the sealing cover 12, and the top of the liquid storage tank 11 is fixedly connected to the fixing seat 13, the top of the fixing seat 13 is installed with a first motor 14, the output end of the first motor 14 is vertically connected to the stirring shaft 15, the bottom of the stirring shaft 15 extends to the interior of the liquid storage tank 11, and the top of the liquid storage tank 11 is connected to the liquid adding pipe 16.

[0023] The liquid in the liquid storage tank 11 is clear lime water.

[0024] As attached Figure 1-3 As shown, the filtering mechanism includes a filter plate 18 which is obliquely inserted into the interior of the box body 5, a filter screen 181 is provided inside the filter plate 18, and the top of the filter plate 18 is located above the box body 5 and is fixedly connected to an end block 19, a pull ring 21 is provided on the top of the end block 19, a placement seat 20 is provided at the top of the box body 5 corresponding to the bottom position of the end block 19, and a locking bolt 22 is connected to the top of the end block 19. A stopper 17 is provided on the bottom inner wall of the box body 5 on one side of the filter plate 18, and a rubber pad 23 is provided on the lower surface of the end block 19. Screw holes 25 are provided at the connection between the end block 19 and the placement seat 20 corresponding to the locking bolt 22. A through hole 24 is provided on the top of the box body 5 and the interior of the placement seat 20 for inserting the filter plate 18. The provided filtering mechanism is convenient for filtering the gas discharged from the electroslag furnace when in use.

[0025] As attached Figure 1 As shown, the top and bottom of the water tank 8 are respectively provided with a water inlet and a drain outlet, and the water inlet and the drain outlet are both threadedly connected with end covers, which facilitates the addition and drainage of water to the inside of the water tank 8, and further facilitates the replacement of the water inside the water tank 8.

[0026] As attached Figure 1 and attached Figure 4 As shown, the inner wall cleaning mechanism includes a second motor 26 fixedly connected to the bottom of the water tank 8, and the output end of the second motor 26 is vertically connected to the drive shaft 27. The end of the drive shaft 27 extends to the inside of the water tank 8 and is fixedly connected to an L-shaped rod 28. The outer wall of the L-shaped rod 28 is evenly provided with bristles 29. The second motor 26 is fixedly connected to the bottom of the water tank 8 by screws. A bearing is installed at the connection between the bottom of the water tank 8 and the drive shaft 27, and a sealing ring is installed on the inner wall of the bottom of the water tank 8 corresponding to the outside of the drive shaft 27, so as to facilitate cleaning the inner wall of the water tank 8 during use.

[0027] As attached Figure 1 As shown, the fixing seat 13 is welded and fixed to the outer wall of the liquid storage tank 11 , and the bottom of the first motor 14 is fixed to the top of the fixing seat 13 by screws, so as to facilitate the installation and fixation of the first motor 14 .

[0028] Working principle: This utility model designs an exhaust gas treatment device for electroslag furnace. The specific structure is as shown in the attached manual. Figure 1-4 As shown, when the present technical solution is in use, the operation of the fan 3 drives the gas inside the exhaust pipe of the electroslag furnace to be pumped into the interior of the box body 5. By installing a filter mechanism inside the box body 5, the filter screen 181 on the filter plate 18 is used to filter the gas in the process of passing through the interior of the box body 5. Since the filter plate 18 is tilted, the slag discharge port 6 is arranged below the filter plate 18. The dust particles falling during the filtering process fall into the interior of the slag discharge port 6, and the dust particles can be discharged by opening the cover at the bottom of the slag discharge port 6. At the same time, the filter plate 18 is detachable and can also be fixed. The filter plate 18 can be easily taken out for cleaning or replacement by loosening the locking bolts 22. The filtered gas passes through the second The air supply pipe 7 enters the interior of the water tank 8 to react with water to form hydrogen fluoride, and then enters the interior of the liquid storage tank 11 through the third air supply pipe 9 to react with clarified lime water to generate calcium fluoride precipitate. Then, the cover 12 is opened to discharge the precipitate. By starting the first motor 14 to drive the stirring shaft 15 to rotate, the reaction of hydrogen fluoride inside the liquid storage tank 11 is accelerated. The provided liquid adding pipe 16 is convenient for adding clarified lime water. Among them, an inner wall cleaning mechanism is provided at the bottom of the water tank 8. When in use, the second motor 26 is started to drive the drive shaft 27 to rotate, and then the L-shaped rod 28 is driven to rotate, and the bristles 29 on the L-shaped rod 28 are used to clean the inner wall of the water tank 8 to reduce the adhesion of adhesives.

[0029] The drawings of the embodiments disclosed in the present invention only relate to the structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. In the absence of conflicts, the same embodiment and different embodiments of the present invention may be combined with each other.

[0030] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An exhaust gas treatment device for an electroslag furnace, comprising an air intake hood (1) connected to an exhaust pipe of the electroslag furnace, characterized in that: One end of the air inlet hood (1) is connected to a fixed shell (2), a fan (3) is installed inside the fixed shell (2), the other end of the fixed shell (2) is connected to a first air supply pipe (4), the end of the first air supply pipe (4) is connected to a box (5), a slag discharge port (6) is provided at the bottom of the box (5), and a filtering mechanism is installed inside the box (5), a water tank (8) is provided on one side of the box (5), and one end of the box (5) is connected to a second air supply pipe (7) inserted into the inside of the water tank (8), an inner wall cleaning mechanism is provided at the bottom of the water tank (8), and the top of the water tank (8) is connected to the inner wall cleaning mechanism. A third air supply pipe (9) is connected, the end of the third air supply pipe (9) is connected to a connecting pipe (10), one end of the connecting pipe (10) is connected to a liquid storage tank (11), the bottom end of the liquid storage tank (11) is connected to a sealing cover (12), and the top of the liquid storage tank (11) is fixedly connected to a fixing seat (13), a first motor (14) is installed on the top of the fixing seat (13), the output end of the first motor (14) is vertically connected to a stirring shaft (15), the bottom of the stirring shaft (15) extends to the interior of the liquid storage tank (11), and the top of the liquid storage tank (11) is connected to a liquid adding pipe (16); The filtering mechanism includes a filter plate (18) obliquely inserted into the interior of the box (5), a filter screen (181) is provided inside the filter plate (18), and the top of the filter plate (18) is located above the box (5) and fixedly connected to an end block (19), the top of the end block (19) is provided with a pull ring (21), a placement seat (20) is provided at a position corresponding to the bottom of the end block (19) at the top of the box (5), the top of the end block (19) is connected to a locking bolt (22), a stopper (17) is provided on the bottom inner wall of the box (5) at one side of the filter plate (18), a rubber pad (23) is provided on the lower surface of the end block (19), screw holes (25) are provided at the connection between the end block (19) and the placement seat (20) corresponding to the locking bolt (22), and a through hole (24) for inserting the filter plate (18) is provided at the top of the box (5) and the placement seat (20).

2. The exhaust gas treatment device for an electroslag furnace according to claim 1, characterized in that: The top and bottom of the water tank (8) are respectively provided with a water inlet and a water outlet, and both the water inlet and the water outlet are threadedly connected to end covers.

3. The exhaust gas treatment device for an electroslag furnace according to claim 1, characterized in that: The inner wall cleaning mechanism comprises a second motor (26) fixedly connected to the bottom of the water tank (8); the output end of the second motor (26) is vertically connected to a drive shaft (27); the end of the drive shaft (27) extends to the inside of the water tank (8) and is fixedly connected to an L-shaped rod (28); the outer wall of the L-shaped rod (28) is evenly provided with bristles (29).

4. The exhaust gas treatment device for an electroslag furnace according to claim 3, characterized in that: The second motor (26) is fixedly connected to the bottom of the water tank (8) by screws, a bearing is installed at the connection point of the bottom of the water tank (8) corresponding to the drive shaft (27), and a sealing ring is installed on the inner wall of the bottom of the water tank (8) corresponding to the outside of the drive shaft (27).

5. The exhaust gas treatment device for an electroslag furnace according to claim 1, characterized in that: The fixing seat (13) is fixed to the outer wall of the liquid storage tank (11) by welding, and the bottom of the first motor (14) is fixed to the top of the fixing seat (13) by screws.

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