Waste gas recycling device for LF (ladle furnace)

Abstract

The utility model relates to the technical field of steel smelting, and discloses an LF refining furnace waste gas recycling device which comprises a furnace body, a purifying and recycling device is installed on the side wall of one side of the furnace body, the furnace body communicates with the purifying and recycling device through a gas conveying pipe, a fixing plate is connected to the upper end of the furnace body, and a transverse plate is connected to the side wall of one side of the fixing plate. A rotating rod is rotatably connected to the lower end of the moving block, a knocking pipe is connected to the lower end of the rotating rod, a knocking rod is slidably connected into the knocking pipe, and the lower end of the knocking rod penetrates through a pipe opening of the knocking pipe, extends downwards and is connected with a knocking wheel. According to the technical scheme, through mutual cooperation of the furnace body, the purification and recovery equipment, the gas conveying pipe, the rotating rod, the knocking pipe, the knocking rod, the knocking wheel, the gear, the rack, the motor, the reciprocating lead screw and other structures, dust attached to the inner wall of the gas conveying pipe can be automatically cleaned, the situation that too much dust is accumulated, and airflow circulation is affected is prevented, and therefore the applicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of steel smelting, in particular to a LF refining furnace waste gas recycling device. BACKGROUND

[0002] Steel smelting is a general term of steel and iron metallurgical process. Industrial production iron is divided into pig iron (carbon content is more than 2%) and steel (carbon content is less than 2%) according to the carbon content, and in the steel smelting process, the LF refining furnace is often used for refining steel.

[0003] At present, when the existing LF refining furnace refines steel, waste gas is generated, the generated waste gas is generally input into the purification equipment through the gas conveying pipe for purification treatment, and then the gas is recycled, but when the waste gas is input, the waste gas may contain many impurities and dust, so when the waste gas is transported in the gas conveying pipe, the dust is easy to adhere to the inner wall of the gas conveying pipe, if not cleaned in time, the dust will be accumulated for a long time, which reduces the gas flow efficiency and the equipment treatment effect, and the applicability is poor. SUMMARY

[0004] The application aims to provide a LF refining furnace waste gas recycling device to solve the problems in the background art.

[0005] The application provides a LF refining furnace waste gas recycling device, which comprises a furnace body, a purification and recycling equipment is installed on the side wall of one side of the furnace body, the furnace body and the purification and recycling equipment are connected in communication through a gas conveying pipe, a fixed plate is connected to the upper end of the furnace body, a horizontal plate is connected to the side wall of one side of the fixed plate, a moving block is slidingly connected to the lower end of the horizontal plate, a rotating rod is rotatably connected to the lower end of the moving block, a knocking pipe is connected to the lower end of the rotating rod, a knocking rod is slidingly connected in the knocking pipe, the knocking rod extends downward through the pipe opening of the knocking pipe and is connected with a knocking wheel, the knocking wheel abuts against the gas conveying pipe, a gear is fixedly sleeved on the rod wall of the rotating rod, a rack is connected to the side wall of one side of the fixed plate, and the gear is engaged with the rack, a driving assembly for driving the moving block to move is installed on the horizontal plate, and a water spraying assembly for flushing the inside of the gas conveying pipe is installed on the purification and recycling equipment.

[0006] By adopting the technical scheme, in use, the steel is smelted by the furnace body, the waste gas generated is discharged into the purification and recycling equipment through the gas conveying pipe for purification and recycling, when it is necessary to clean the inner wall of the gas conveying pipe, the driving assembly is driven to move the moving block, the movement of the moving block drives the rotating rod to move, the movement of the rotating rod drives the gear to move, the movement of the gear is subjected to the action force of the rack to rotate, the rotation of the gear drives the rotating rod to rotate, the rotation of the rotating rod drives the knocking pipe to rotate, the rotation of the knocking pipe drives the knocking wheel to move through the knocking rod, the knocking wheel moves under the centrifugal force when rotating, when the knocking wheel contacts the gas conveying pipe, the knocking wheel knocks the gas conveying pipe, the gas conveying pipe vibrates, the dust adhered to the inner wall of the gas conveying pipe falls off, and then enters the purification and recycling equipment together with the waste gas, the dust adhered to the inner wall of the gas conveying pipe can be automatically cleaned through the above structure, dust accumulation is prevented, air flow is not affected, and therefore, the applicability of the device is improved.

[0007] Optionally, the driving assembly comprises a motor fixedly installed on one side of the sidewall of the fixed plate, and a reciprocating screw rod connected to the output end of the motor through a shaft coupling.

[0008] By adopting the technical scheme, the motor is started, and the operation of the motor drives the reciprocating screw rod to rotate.

[0009] Optionally, the water spraying assembly comprises an air cylinder fixedly installed on the upper end of the purification and recycling equipment, the bottom of the air cylinder is connected in communication with the gas conveying pipe through a drain pipe, a piston is slidably connected in the air cylinder, the upper end of the piston extends upward through the top end of the air cylinder, two springs are symmetrically connected at the top end in the air cylinder, and the other ends of the springs are connected to the piston.

[0010] By adopting the technical scheme, the piston moves up and down in the air cylinder, when the piston moves downward, the piston squeezes the air in the air cylinder, the air squeezes the cleaning water in the air cylinder, the cleaning water enters the gas conveying pipe through the drain pipe to flush the inside of the gas conveying pipe, and the cleaning effect of the inner wall of the gas conveying pipe is further improved.

[0011] Optionally, one end of the reciprocating screw rod is connected with a cam, the upper end of the piston is connected with a pulley, and the cam abuts against the pulley.

[0012] Through adoption of the above technical scheme, rotation of the reciprocating screw rod will drive the cam to rotate, and movement of the cam will apply force to the piston through the pulley, and the piston will move downward under the action of the force, and meanwhile, movement of the piston will also stretch the spring, and when the force from the cam on the pulley is removed, the spring will reset to reset the piston, and the process is repeated.

[0013] Optionally, a sliding groove is formed in the lower end of the horizontal plate, and a sliding block is slidably connected in the sliding groove.

[0014] Through adoption of the above technical scheme, the movement of the moving block is limited to prevent the moving block from rotating.

[0015] Optionally, a sliding rod is fixedly connected to the groove wall in the sliding groove, and the sliding rod is arranged through the sliding block and is slidably connected to the sliding block.

[0016] Through adoption of the above technical scheme, the sliding block is prevented from being separated from the sliding groove.

[0017] Optionally, a rolling groove is formed in the side wall on one side of the sliding block, and a rolling ball is arranged in the rolling groove, the rolling ball is arranged through the slot of the rolling groove, and the rolling ball is rollingly connected to the groove bottom of the sliding groove.

[0018] Through adoption of the above technical scheme, the friction between the sliding block and the sliding groove is reduced.

[0019] Optionally, the knocking wheel is a rubber wheel.

[0020] Through adoption of the above technical scheme, the impact force of the buffer knocking wheel on the gas conveying pipe is reduced.

[0021] Compared with the prior art, the technical scheme of the present application has the following advantages:

[0022] (1) The technical scheme of the present application can automatically clean the dust adhering to the inner wall of the gas conveying pipe through the cooperation between the furnace body, the purification and recovery equipment, the gas conveying pipe, the fixing plate, the horizontal plate, the moving block, the rotating rod, the knocking pipe, the knocking rod, the knocking wheel, the gear, the rack, the motor and the reciprocating screw rod, thereby preventing excessive accumulation of dust and affecting airflow circulation, and thus improving the applicability of the device.

[0023] (2) The technical scheme of the present application is provided with the air cylinder, the drain pipe, the piston, the spring, the cam and the pulley, and the piston is made to move back and forth in the vertical direction in the air cylinder through the cam and the pulley, when the piston moves downward, the piston will squeeze the air in the air cylinder, the air will squeeze the cleaning water in the air cylinder, and the cleaning water will enter the gas conveying pipe through the drain pipe to flush the inside of the gas conveying pipe, thereby further improving the cleaning effect of the inner wall of the gas conveying pipe. BRIEF DESCRIPTION OF DRAWINGS

[0024] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings:

[0025] Figure 1 It is a whole structure schematic diagram of the LF refining furnace waste gas recycling device of the application;

[0026] Figure 2 It is a fixed plate structure schematic diagram in the LF refining furnace waste gas recycling device of the application;

[0027] Figure 3 It is an air cylinder internal structure schematic diagram in the LF refining furnace waste gas recycling device of the application;

[0028] Figure 4 It is a slider structure schematic diagram in the LF refining furnace waste gas recycling device of the application.

[0029] In the figure: 1, furnace body; 2, purification and recycling equipment; 3, gas conveying pipe; 4, fixed plate; 5, cross plate; 6, moving block; 7, rotating rod; 8, knocking pipe; 9, knocking rod; 10, knocking wheel; 11, gear; 12, rack; 13, motor; 14, reciprocating screw rod; 15, air cylinder; 16, drain pipe; 17, piston; 18, spring; 19, cam; 20, pulley; 21, slider; 22, slide rod; 23, ball. DETAILED DESCRIPTION

[0030] Please refer to Figures 1-4 The application provides a technical solution: a LF refining furnace waste gas recycling device, which comprises a furnace body 1, a purification and recycling equipment 2 is installed on the side wall of one side of the furnace body 1, the purification and recycling equipment 2 is an existing mature technology, and will not be described in detail in the application, the furnace body 1 and the purification and recycling equipment 2 are connected in communication through a gas conveying pipe 3, the furnace body 1 is connected with a fixed plate 4 at the upper end, a cross plate 5 is connected to the side wall of one side of the fixed plate 4, a moving block 6 is slidingly connected to the lower end of the cross plate 5, a rotating rod 7 is rotatably connected to the lower end of the moving block 6, a knocking pipe 8 is connected to the lower end of the rotating rod 7, a knocking rod 9 is slidingly connected in the knocking pipe 8, the knocking rod 9 extends downward through the pipe opening of the knocking pipe 8 and is connected with a knocking wheel 10, the knocking wheel 10 abuts against the gas conveying pipe 3, a gear 11 is fixedly sleeved on the rod wall of the rotating rod 7, a rack 12 is connected to the side wall of one side of the fixed plate 4, and the gear 11 is engaged with the rack 12, a driving assembly for driving the moving block 6 to move is installed on the cross plate 5, and a water spraying assembly for flushing the inside of the gas conveying pipe 3 is installed on the purification and recycling equipment 2.

[0031] In the technical scheme of the present application, during use, the steel is smelted by the furnace body 1, and the generated waste gas is discharged into the purification and recycling device 2 through the gas conveying pipe 3 for purification and recycling, when it is necessary to clean the inner wall of the gas conveying pipe 3, the driving assembly is driven to move the moving block 6, the movement of the moving block 6 drives the rotary rod 7 to move, the movement of the rotary rod 7 drives the gear 11 to move, the movement of the gear 11 is subjected to the force of the rack 12 to rotate, the rotation of the gear 11 drives the rotary rod 7 to rotate, the rotation of the rotary rod 7 drives the knocking pipe 8 to rotate, the rotation of the knocking pipe 8 drives the knocking wheel 10 to move through the knocking rod 9, the knocking wheel 10 is subjected to the centrifugal force to move when rotating, when the knocking wheel 10 contacts the gas conveying pipe 3, the knocking wheel 10 knocks the gas conveying pipe 3, the gas conveying pipe 3 vibrates, the dust adhered to the inner wall of the gas conveying pipe 3 falls off and then enters the purification and recycling device 2 together with the waste gas, the dust adhered to the inner wall of the gas conveying pipe 3 can be automatically cleaned through the above structure, the dust accumulation is prevented, the airflow circulation is not affected, and therefore the applicability of the device is improved.

[0032] In the technical scheme of the present application, the driving assembly comprises the motor 13 fixedly installed on one side of the sidewall of the fixed plate 4, the reciprocating screw rod 14 connected with the moving block 6 in a threaded manner and connected with the output end of the motor 13 through a shaft coupling, the motor 13 is started, and the operation of the motor 13 drives the reciprocating screw rod 14 to rotate, and the rotation of the reciprocating screw rod 14 drives the moving block 6 to move through the threaded action.

[0033] In the technical scheme of the present application, the water spraying assembly comprises the air cylinder 15 fixedly installed on the upper end of the purification and recycling device 2, the air cylinder 15 containing cleaning water, the bottom of the air cylinder 15 being connected with the gas conveying pipe 3 through the drain pipe 16, the piston 17 being slidably connected in the air cylinder 15, the upper end of the piston 17 extending upward through the top end of the air cylinder 15, the air cylinder 15 being symmetrically connected with the two springs 18 at the top end, one end of the spring 18 being connected with the piston 17, so that the piston 17 moves up and down in the air cylinder 15, when the piston 17 moves downward, the piston 17 presses the air in the air cylinder 15, the air presses the cleaning water in the air cylinder, the cleaning water enters the gas conveying pipe 3 through the drain pipe 16 to flush the inside of the gas conveying pipe 3, and the effect of cleaning the inner wall of the gas conveying pipe 3 is further improved.

[0034] In the technical scheme of the present application, one end of the reciprocating screw rod 14 is connected with a cam 19, the upper end of the piston 17 is connected with a pulley 20, and the cam 19 abuts against the pulley 20, the rotation of the reciprocating screw rod 14 drives the cam 19 to rotate, the movement of the cam 19 exerts a force on the piston 17 through the pulley 20, the piston 17 moves downward under the action of the force, and simultaneously, the movement of the piston 17 also stretches the spring 18, when the force of the cam 19 on the pulley 20 is removed, the spring 18 resets to reset the piston 17, and the process is repeated.

[0035] In the technical scheme of the present application, the lower end of the horizontal plate 5 is provided with a sliding groove, a sliding block 21 is slidably connected in the sliding groove, and the lower end of the sliding block 21 is connected to the moving block 6 to limit the rotation of the moving block 6.

[0036] In the technical scheme of the present application, a sliding rod 22 is fixedly connected to the groove wall in the sliding groove, the sliding rod 22 penetrates through the sliding block 21, and the sliding block 21 is slidably connected to the sliding rod 22 to prevent the sliding block 21 from being separated from the sliding groove.

[0037] In the technical scheme of the present application, a rolling groove is formed in the side wall on one side of the sliding block 21, a rolling ball 23 is arranged in the rolling groove, the rolling ball 23 penetrates through the groove opening of the rolling groove, and the rolling ball 23 is rollingly connected to the groove bottom of the sliding groove to reduce the friction between the sliding block 21 and the sliding groove.

[0038] In the technical scheme of the present application, the knocking wheel 10 is a rubber wheel, which buffers the impact force of the knocking wheel 10 on the gas conveying pipe 3.

[0039] In use, the furnace body 1 is used to smelt steel, the generated waste gas is discharged into the purification and recycling equipment 2 through the gas conveying pipe 3 for purification and recycling, when it is necessary to clean the inner wall of the gas conveying pipe 3, the motor 13 is started, the operation of the motor 13 drives the reciprocating screw rod 14 to rotate, the rotation of the reciprocating screw rod 14 drives the moving block 6 to move through the thread action, the movement of the moving block 6 drives the rotating rod 7 to move, the movement of the rotating rod 7 drives the gear 11 to move, the movement of the gear 11 is driven by the action force of the rack 12 to rotate, the rotation of the gear 11 drives the rotating rod 7 to rotate, the rotation of the rotating rod 7 drives the knocking pipe 8 to rotate, the rotation of the knocking pipe 8 drives the knocking wheel 10 to move through the knocking rod 9, the knocking wheel 10 moves under the centrifugal force when rotating, when the knocking wheel 10 contacts the gas conveying pipe 3, the knocking wheel 10 knocks the gas conveying pipe 3, the gas conveying pipe 3 vibrates, the dust adhered to the inner wall of the gas conveying pipe 3 falls off, and then enters the purification and recycling equipment 2 together with the waste gas.

Claims

1. A LF refining furnace off-gas recycling device comprising a furnace body (1), characterized in that: The side wall of one side of the furnace body (1) is provided with a purification and recovery device (2), the furnace body (1) and the purification and recovery device (2) are communicated through a gas conveying pipe (3), the upper end of the furnace body (1) is connected with a fixed plate (4), the side wall of one side of the fixed plate (4) is connected with a horizontal plate (5), the lower end of the horizontal plate (5) is slidably connected with a moving block (6), the lower end of the moving block (6) is rotatably connected with a rotating rod (7), the lower end of the rotating rod (7) is connected with a knocking pipe (8), the knocking pipe (8) is slidably connected with a knocking rod (9), the lower end of the knocking rod (9) penetrates through the pipe opening of the knocking pipe (8) and extends downward and is connected with a knocking wheel (10), the knocking wheel (10) abuts against the gas conveying pipe (3), the rod wall of the rotating rod (7) is fixedly sleeved with a gear (11), the side wall of one side of the fixed plate (4) is connected with a rack (12), and the gear (11) is engaged with the rack (12), the horizontal plate (5) is provided with a driving assembly for driving the moving block (6) to move, and the purification and recovery device (2) is provided with a water spraying assembly for flushing the inside of the gas conveying pipe (3).

2. The LF refining furnace off-gas recycling device according to claim 1, characterized in that, The driving assembly comprises a motor (13) fixedly installed on the side wall of one side of the fixed plate (4), and the output end of the motor (13) is connected with a reciprocating screw rod (14) through a shaft coupling.

3. The LF refining furnace off-gas recycling device according to claim 2, characterized in that, The water spraying assembly comprises an air cylinder (15) fixedly installed on the upper end of the purification and recovery device (2), the bottom of the air cylinder (15) is communicated with the gas conveying pipe (3) through a drain pipe (16), the air cylinder (15) is slidably connected with a piston (17), the upper end of the piston (17) penetrates through the top end of the air cylinder (15) and extends upward, the inside top end of the air cylinder (15) is symmetrically connected with two springs (18), and the other ends of the springs (18) are connected with the piston (17).

4. The LF refining furnace off-gas recycling device according to claim 3, characterized in that, One end of the reciprocating screw rod (14) is connected with a cam (19), the upper end of the piston (17) is connected with a pulley (20), and the cam (19) abuts against the pulley (20).

5. The LF refining furnace off-gas recycling device according to claim 1, characterized in that, The lower end of the horizontal plate (5) is provided with a sliding groove, the sliding groove is slidably connected with a sliding block (21), and the lower end of the sliding block (21) is connected with the moving block (6).

6. The LF refining furnace off-gas recycling device according to claim 5, characterized in that, The sliding groove is fixedly connected with a sliding rod (22), the sliding rod (22) penetrates through the sliding block (21) and is slidably connected with the sliding block (21).

7. The LF refining furnace off-gas recycling device according to claim 6, characterized in that, The side wall of one side of the sliding block (21) is provided with a rolling groove, the rolling groove is provided with rolling balls (23), the balls (23) penetrate through the groove opening of the rolling groove and are slidably connected with the groove bottom of the sliding groove.

8. The LF refining furnace off-gas recycling device according to claim 1, characterized in that, The knocking wheel (10) is a rubber wheel.

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