Vacuumizing device for steel refining furnace

Abstract

The vacuumizing device for the steel refining furnace comprises a base, a fixing seat is fixedly arranged at the top end of the base, a water tank is placed in the fixing seat, a damping shock absorber is fixedly installed at the top end of the base on the left side of the fixing seat, and a vacuum pump is fixedly installed at the upper end of the damping shock absorber. The top end of the base on the left side of the damping shock absorber is fixedly connected with a hand push rod. The vacuum pump and the water tank are arranged at the top end of the base, the universal wheels and the telescopic rod are installed at the bottom end of the base, and the groove is fixedly formed in the ground of the refining furnace, so that when repair or maintenance is needed, the telescopic rod is taken out of the groove, then the device is moved to a maintenance point through the universal wheels, and convenience and rapidness are achieved; therefore, the problem of inconvenience in movement in the prior art is solved, the carrying complexity and labor intensity during repair or maintenance are reduced, and the flexibility is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel refining furnaces, in particular to a vacuum pumping device used in steel refining furnaces. Background Art

[0002] Refining is the process of moving the molten steel from the converter or electric furnace to another reactor for refining, also known as secondary refining. RH refining is the full name of RH vacuum cycle degassing refining method. It was invented by the Germans in 1959, where RH is the first letter of the two manufacturers in Germany that adopted RH refining technology at that time. The application of vacuum technology in steelmaking began in 1952. At that time, when people produced silicon steel with a silicon content of about 2%, slag often occurred during the pouring process. After various tests, it was finally discovered that hydrogen and nitrogen in the molten steel were the main reasons for slag, inability to pour or production of waste after rolling. Subsequently, various vacuum refining technologies began to appear, such as vacuum ingot casting, ladle trickle degassing, ladle degassing, etc., thus creating an industrial-scale molten steel vacuum treatment method. In particular, the emergence of steam jet pumps has accelerated the development of vacuum steelmaking technology.

[0003] A Chinese patent document with publication number CN209338603U discloses a vacuum extraction device for an RH vacuum refining furnace, comprising a vacuum refining furnace, wherein a suction pipe is connected through the upper surface of the vacuum refining furnace, a vacuum pump is connected to the other side of the suction pipe, an air inlet pipe is connected through the upper part of the other side of the vacuum pump, a water tank is arranged on the right side of the vacuum refining furnace, an air outlet pipe is connected between the vacuum pump and the water tank, an exhaust fan is arranged on the upper surface of the water tank, a water tank air outlet pipe is arranged above the exhaust fan, and a liquid level sensor is arranged through the upper surface of the water tank on the right side of the exhaust fan.

[0004] The inventor believes that the utility model is not easy to move. If the device as a whole or a single component (such as a water tank) needs to be repaired or maintained, each component needs to be disassembled and moved for repair or maintenance, which is troublesome. Therefore, we propose a vacuum device for a steel refining furnace. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a vacuum extraction device for a steel refining furnace, by arranging a vacuum pump and a water tank at the top of a base, installing universal wheels and a telescopic rod at the bottom of the base, and fixing a groove on the floor of the refining furnace. When in use, the device is moved to the side of the refining furnace, and the telescopic rod is inserted into the groove so that the device is clamped next to the refining furnace. When repair or maintenance is required, the telescopic rod is taken out of the groove, and then the device is moved to a maintenance point by the universal wheels, which is convenient and quick, thereby solving the problem that the prior art proposed in the background technology is not convenient to move, and if the device as a whole or a single accessory (such as a water tank) needs to be repaired or maintained, each accessory needs to be disassembled and moved for repair or maintenance, which is rather troublesome.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a vacuum extraction device for a steel refining furnace, comprising a refining furnace and a base, a fixed seat is fixedly provided at the top of the base, a water tank is placed in the fixed seat, a damping shock absorber is fixedly installed at the top of the left base of the fixed seat, a vacuum pump is fixedly installed at the upper end of the damping shock absorber, a push rod is also fixedly connected to the top of the left base of the damping shock absorber, a telescopic rod is fixedly connected to the left side of the base, a groove is fixedly provided on the ground of the refining furnace, the telescopic rod is adapted to be clamped with the groove, and a universal wheel is fixedly connected to the bottom of the base.

[0009] As a preferred solution of a vacuum pumping device for a steel refining furnace described in the utility model, a suction pipe is connected through one end of the refining furnace, an air inlet pipe is connected through the other upper side of the vacuum pump, and an air outlet pipe is connected between the vacuum pump and the water tank.

[0010] As a preferred solution of a vacuum pumping device for a steel refining furnace described in the utility model, the other end of the suction pipe is connected to the suction pipe of the vacuum pump, the vacuum pump is connected to the air inlet pipe, and the vacuum pump is connected to the water tank through a clamping mechanism.

[0011] As a preferred solution of a vacuum extraction device for a steel refining furnace described in the utility model, the clamping mechanism includes a pair of connecting grooves and a docking joint, the connecting grooves are respectively fixed on the suction pipes on both sides, the air inlet pipe and the connecting pipe between the vacuum pump and the water tank, a docking joint is provided between the connecting grooves, and the connecting grooves are detachably fixed by screws.

[0012] As a preferred solution of a vacuum pumping device for a steel refining furnace described in the utility model, the fixing seat includes a fixing ring and a pair of fastening screws, and the fastening screws are respectively threadedly connected to the two ends of the fixing ring.

[0013] As a preferred solution of the vacuum pumping device for a steel refining furnace described in the utility model, a perspective window is also provided on the surface of the water tank.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0016] The vacuum pump and the water tank are arranged at the top of the base, universal wheels and telescopic rods are installed at the bottom of the base, and a groove is fixedly provided on the floor of the refining furnace. When in use, the device is moved to the side of the refining furnace, and the telescopic rod is inserted into the groove so that the device is clamped next to the refining furnace. When repair or maintenance is required, the telescopic rod is taken out of the groove, and then the device is moved to the maintenance point by the universal wheels, which is convenient and quick, thereby solving the problem of inconvenience in movement in the prior art, reducing the complexity and labor intensity of transportation during repair or maintenance, and enhancing flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the utility model when the clamping mechanism is not docked;

[0019] Figure 3 This is a schematic diagram of the clamping mechanism of the utility model when docking;

[0020] Figure 4 This is a schematic diagram of the fixing seat of the utility model;

[0021] Among them: 1. base; 2. fixing seat; 21. fixing ring; 22. fastening screw; 3. water tank; 4. damping shock absorber; 5. vacuum pump; 6. push rod; 7. refining furnace; 8. suction pipe; 9. air inlet pipe; 10. air outlet pipe; 11. clamping mechanism; 110. connecting groove; 111. docking joint; 12. perspective window; 13. universal wheel; 14. groove; 15. telescopic rod. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purpose and efficacy of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the utility model. The experimental methods in the following embodiments are conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified.

[0023] Embodiment:

[0024] like Figure 1-4 As shown, the utility model provides a vacuum extraction device for a steel refining furnace, comprising a refining furnace 7 and a base 1, a fixing seat 2 is fixedly provided at the top of the base 1, a water tank 3 is placed in the fixing seat 2, a damping shock absorber 4 is fixedly installed at the top of the left side base 1 of the fixing seat 2, a vacuum pump 5 is fixedly installed at the upper end of the damping shock absorber 4, a push rod 6 is also fixedly connected to the top of the left side base 1 of the damping shock absorber 4, a telescopic rod 15 is fixedly connected to the left side of the base 1, a groove 14 is fixedly provided on the ground of the refining furnace 7, the telescopic rod 15 is adapted to be clamped with the groove 14, and a universal wheel 13 is fixedly connected to the bottom of the base 1.

[0025] As a preferred embodiment of the vacuum extraction device for a steel refining furnace described in the utility model, specifically, a suction pipe 8 is connected through one end of the refining furnace 7, an air inlet pipe 9 is connected through the other upper side of the vacuum pump 5, an air outlet pipe 10 is connected between the vacuum pump 5 and the water tank 3, the suction pipe 8 is used to extract the air in the refining furnace 7, the air inlet pipe 9 is used to press the air extracted from the refining furnace 7 into the air outlet pipe 10, and the air outlet pipe 10 is used to discharge the air.

[0026] As a preferred solution of a vacuum extraction device for a steel refining furnace described in the utility model, specifically, in order to prevent the connection between pipes from breaking due to the vibration of the vacuum pump 5 when vacuum is extracted, the other end of the suction pipe 8 and the suction pipe 8 of the vacuum pump 5, the vacuum pump 5 and the air inlet pipe 9, and the vacuum pump 5 and the water tank 3 are all connected by a clamping mechanism 11.

[0027] As a preferred solution of a vacuum extraction device for a steel refining furnace described in the utility model, specifically, the clamping mechanism 11 includes a pair of connecting grooves 110 and a docking joint 111. The connecting grooves 110 are respectively fixed on the suction pipes 8, the air inlet pipe 9 and the connecting pipes between the vacuum pump 5 and the water tank 3 on both sides. A docking joint 111 is provided between the connecting grooves 110, and the connecting grooves 110 are detachably fixed by screws; the connecting grooves 110 are installed on two connected pipes, a docking joint 111 is provided between the pipes, the two connected pipes are inserted into the docking joint 111, and then the connecting grooves 110 are detachably fixed by screws.

[0028] As a preferred solution of a vacuum extraction device for a steel refining furnace described in the utility model, specifically, in order to prevent the water tank 3 from shaking, the water tank 3 is fixed in the fixing seat 2, and the fixing seat 2 includes a fixing ring 21 and a pair of fastening screws 22, and the fastening screws 22 are respectively threadedly connected to the two ends of the fixing ring 21. When in use, first loosen the fastening screws 22 outwards, then put the water tank 3, and then tighten the fastening screws 22.

[0029] As a preferred solution of the vacuum pumping device for a steel refining furnace described in the utility model, specifically, in order to observe the situation in the water tank 3, a perspective window 12 is further opened on the surface of the water tank 3.

[0030] Working principle of the utility model: when in use, first move the utility model to the side of the refining furnace 7, insert the telescopic rod 15 into the groove 14, and at the same time step on the brake of the universal wheel 13 to fix the utility model to prevent shaking, then connect the suction pipe 8, the air inlet pipe 9 and the air outlet pipe 10 one by one, and use the clamping mechanism 11 to fix the joint to prevent breakage, and then start the vacuum pump 5; when the utility model needs to be repaired or maintained, first close the valve of the refining furnace 7 (not shown in the figure), then disconnect the clamping mechanism 11 of each pipeline, and move the utility model to the designated location, thereby reducing the complexity and labor intensity of transportation during repair or maintenance and enhancing flexibility.

[0031] It should be noted that the vacuum pump and the water tank vacuuming principle of the utility model are the prior art with publication number CN209338603U, so no further elaboration will be made thereon.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum pumping device for a steel refining furnace, comprising a refining furnace (7) and a base (1), characterized in that: A fixing seat (2) is fixedly provided at the top of the base (1), a water tank (3) is placed in the fixing seat (2), a damping shock absorber (4) is fixedly installed at the top of the left base (1) of the fixing seat (2), a vacuum pump (5) is fixedly installed at the upper end of the damping shock absorber (4), a push rod (6) is also fixedly connected to the top of the left base (1) of the damping shock absorber (4), a telescopic rod (15) is fixedly connected to the left side of the base (1), a groove (14) is fixedly provided on the ground of the refining furnace (7), the telescopic rod (15) is adapted to be snap-fitted with the groove (14), and a universal wheel (13) is fixedly connected to the bottom of the base (1).

2. The vacuum pumping device for a steel refining furnace according to claim 1, characterized in that: A suction pipe (8) is connected through one end of the refining furnace (7), an air inlet pipe (9) is connected through the other upper side of the vacuum pump (5), and an air outlet pipe (10) is connected between the vacuum pump (5) and the water tank (3).

3. The vacuum pumping device for a steel refining furnace according to claim 2, characterized in that: The other end of the suction pipe (8) is connected to the suction pipe (8) of the vacuum pump (5), the vacuum pump (5) is connected to the air intake pipe (9), and the vacuum pump (5) is connected to the water tank (3) via a clamping mechanism (11).

4. The vacuum pumping device for a steel refining furnace according to claim 3, characterized in that: The clamping mechanism (11) comprises a pair of connecting grooves (110) and a docking joint (111); the connecting grooves (110) are respectively fixed to the suction pipes (8) at both sides, the air intake pipe (9) and the connecting pipe between the vacuum pump (5) and the water tank (3); a docking joint (111) is provided between the connecting grooves (110); and the connecting grooves (110) are detachably fixedly connected by screws.

5. The vacuum pumping device for a steel refining furnace according to claim 1, characterized in that: The fixing seat (2) comprises a fixing ring (21) and a pair of fastening screws (22), wherein the fastening screws (22) are respectively threadedly connected to two ends of the fixing ring (21).

6. The vacuum pumping device for a steel refining furnace according to claim 1, characterized in that: A perspective window (12) is also provided on the surface of the water tank (3).

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