Rapid purging oxygen lance cleaning device

Abstract

The invention relates to the technical field of oxygen lance cleaning, and discloses a rapid purging oxygen lance cleaning device which comprises a mounting frame located outside an oxygen lance, a lifting opening is formed in the upper surface of the mounting frame in a penetrating mode, supporting frames are fixedly connected to the upper surface of the mounting frame, and the two supporting frames are located on the two sides of the lifting opening correspondingly; a lifting mechanism is connected between the two supporting frames, the output end of the lifting mechanism is connected with a hanging assembly, the other end of the hanging assembly is connected with two outer pipes and two inclining mechanisms, and the outer walls of the two outer pipes are connected with the ends, away from the hanging assembly, of the two inclining mechanisms correspondingly. According to the quick purging oxygen lance cleaning device, personnel can purge oxygen in a remote control state, so that the labor intensity of the personnel is greatly reduced, and the potential safety hazard of operation is eliminated; the operation can be quickly completed in the oxygen lance lifting process, the process time is not occupied, and the operation efficiency of the converter is improved; operation intensity of the slag scraper is effectively reduced, service life of the oxygen lance steel wire rope is prolonged, and equipment operation cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of oxygen lance cleaning, in particular to a fast-purge oxygen lance cleaning device. Background Art

[0002] Most steel mills now adopt a low iron consumption production process mode. Under low iron consumption conditions, the molten pool temperature is relatively low in the early stage of the smelting process, which is not conducive to the melting of auxiliary materials entering the furnace and easily causes steel to stick to the gun body. The cleaning process requires manual hand-held oxygen in the high-temperature area to perform local cutting of the cold steel, and then use a scraper to clean it.

[0003] There are three major problems with this process: 1. During manual cleaning, the area is small and the working environment temperature is high, especially in summer, which makes it impossible to continue working and poses a safety hazard.

[0004] 2. The online cleaning process of the oxygen gun takes up production time and reduces operating efficiency.

[0005] 3. After manual online cutting, a scraper needs to be used to clean the cold steel. At that time, the tension of the oxygen gun wire rope will increase instantly, shortening the service life of the scraper and wire rope, resulting in cost waste and safety hazards. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a fast-purge oxygen lance cleaning device to at least solve one of the above problems.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fast-purge oxygen gun cleaning device, comprising a mounting frame located outside the oxygen gun, a lifting port is penetrated through the upper surface of the mounting frame, a support frame is fixedly connected to the upper surface of the mounting frame, two support frames are respectively located on both sides of the lifting port, and a lifting mechanism is connected between the two support frames, the output end of the lifting mechanism is connected to a suspension assembly, the other end of the suspension assembly is connected to two outer tubes and two tilting mechanisms, the outer walls of the two outer tubes are respectively connected to one end of the two tilting mechanisms away from the suspension assembly, a water cavity is opened inside the two outer tubes, an inner tube is fixedly connected to the inner wall of the water cavity, an air cavity is opened inside the inner tube, a plurality of nozzles are fixedly connected to the outer wall of the inner tube, the other ends of the plurality of nozzles all penetrate the outer tube, the other ends of the plurality of nozzles are all aligned with the outer wall of the oxygen gun, a cooling mechanism and two oxygen supply mechanisms are connected to the upper surface of the mounting frame, the output end and the input end of the cooling mechanism are respectively fixedly connected to the two ends of the two outer tubes, and the output ends of the two oxygen supply mechanisms respectively penetrate the two outer tubes and are fixedly connected to one end of the two inner tubes.

[0008] Furthermore, the side walls of the two support frames are penetrated with sliding openings, and the lifting mechanisms are respectively located in the two sliding openings.

[0009] Furthermore, the lifting mechanism includes a lifting motor, a screw rod and a sliding rod. The outer wall of the lifting motor is fixedly connected to the upper surface of one of the support frames, the output shaft of the lifting motor is fixedly connected to one end of the screw rod, the other end of the screw rod passes through the connected support frame and is rotatably connected to the inner wall of the support frame, the two ends of the sliding rod are fixedly connected to the upper and lower inner walls of the sliding mouth of another support frame, and the two ends of the suspension assembly are respectively connected to the screw rod and the sliding rod.

[0010] Furthermore, the suspension assembly includes a movable plate and four hanging plates, both ends of the movable plate are respectively sleeved on the outside of the screw rod and the sliding rod, the inner wall of the movable plate is threadedly connected to the outer wall of the screw rod, the inner wall of the movable plate is slidingly connected to the outer wall of the sliding rod, the four hanging plates are divided into two groups, the upper ends of the two groups of hanging plates are fixedly connected to the bottom surface of the movable plate, the lower ends of the two groups of hanging plates are respectively rotatably connected to the outer walls of the two outer tubes through rotating shafts, and the ends of the two tilting mechanisms away from the outer tubes are connected to the bottom surface of the movable plate.

[0011] Furthermore, the tilting mechanism includes a connecting plate, a hydraulic push rod, two fixed blocks and two rotating blocks, the upper ends of the two fixed blocks are fixedly connected to the bottom surface of the movable plate, the upper end of the connecting plate is located between the two fixed blocks and is connected to the internal rotation of the two fixed blocks through a rotating shaft, the lower end of the connecting plate is fixedly connected to the outer wall of the hydraulic push rod, the lower ends of the two rotating blocks are fixedly connected to the outer wall of the outer tube, and the output end of the hydraulic push rod is located between the two rotating blocks and is connected to the internal rotation of the two rotating blocks through a rotating shaft.

[0012] Furthermore, the cooling mechanism comprises a cooling box, two liquid return pipes, two liquid outlet pipes and four coolant connectors, an outer wall of the cooling box is fixedly connected to the upper surface of the mounting frame, one end of the two liquid return pipes and the two liquid outlet pipes are fixedly connected to the cooling box, the other ends of the two liquid return pipes and the two liquid outlet pipes are respectively threadedly connected to one end of the four coolant connectors, one liquid return pipe, one liquid outlet pipe and two coolant connectors form a group, and the other ends of the two groups of coolant connectors are respectively fixedly connected to the two ends of the two outer tubes.

[0013] Furthermore, the outer walls of the two outer tubes are fixedly connected with support rods, the other ends of the two support rods are fixedly connected with collars, and the two collars are respectively sleeved on the outside of the two liquid return tubes.

[0014] Furthermore, the oxygen supply mechanism includes an oxygen point valve box, a solenoid valve, a flame arrester, an oxygen tube and an oxygen connector. The outer wall of the oxygen point valve box is fixedly connected to the upper surface of the mounting frame, one side of the oxygen point valve box is fixedly connected to one end of the oxygen tube, the other end of the oxygen tube passes through the outer tube and is threadedly connected to one end of the oxygen connector, the other end of the oxygen connector is fixedly connected to one end of the inner tube, the solenoid valve and the flame arrester are both installed on the oxygen tube, and the solenoid valve is located at one end close to the oxygen point valve box.

[0015] Compared with the prior art, the present invention has the following beneficial effects: With this fast-purge oxygen lance cleaning device, personnel can use oxygen for purge under remote control, which greatly reduces the labor intensity of personnel and eliminates safety hazards in operations. This operation can be completed quickly during the oxygen lance lifting process, does not occupy process time, and improves the converter operation efficiency. It effectively reduces the scraper operation intensity, extends the life of the oxygen lance wire rope, and reduces equipment operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall appearance of the present invention; Figure 2 This is a schematic diagram of the overall appearance of the present invention from another viewing angle; Figure 3 It is a schematic diagram of the internal structure of the mounting frame of the present invention; Figure 4 It is a detailed connection diagram of the mounting frame and the supporting frame of the present invention; Figure 5 It is a detailed connection diagram of the cooling mechanism, oxygen supply mechanism and lifting mechanism of the present invention; Figure 6 It is a detailed connection diagram of various components of the cooling mechanism of the present invention; Figure 7 It is a detailed connection diagram of various components of the oxygen supply mechanism of the present invention; Figure 8 It is a detailed connection diagram of the outer tube and the tilting mechanism and other components of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of the cross section of the middle and outer tubes; Fig.10 For the present invention Fig. 9 Schematic diagram of the cross section of the inner tube.

[0017] In the figure: 1. mounting frame; 2. supporting frame; 3. sliding mouth; 4. lifting motor; 5. screw rod; 6. sliding rod; 7. moving plate; 8. oxygen point valve box; 9. solenoid valve; 10. flame arrester; 11. oxygen pipe; 12. cooling box; 13. liquid return pipe; 14. coolant connector; 15. outer pipe; 16. nozzle; 17. supporting rod; 18. collar; 19. hanging plate; 20. liquid outlet pipe; 21. oxygen connector; 22. fixed block; 23. rotating block; 24. hydraulic push rod; 25. connecting plate; 26. inner pipe; 27. water cavity; 28. air cavity; 29. ​​lifting port. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] See also Figure 1-Figure 10 A fast purge oxygen gun cleaning device comprises a mounting frame 1 located outside the oxygen gun, a lifting port 29 is formed through the upper surface of the mounting frame 1, a support frame 2 is fixedly connected to the upper surface of the mounting frame 1, two support frames 2 are respectively located on both sides of the lifting port 29, and a lifting mechanism is connected between the two support frames 2, the output end of the lifting mechanism is connected to a suspension component, and the other end of the suspension component is connected to two outer tubes 15 and two tilting mechanisms, the outer walls of the two outer tubes 15 are respectively connected to one end of the two tilting mechanisms away from the suspension component, and the inner parts of the two outer tubes 15 are provided with a plurality of lifting ports 29, and the lifting mechanism is connected to the lifting mechanism. There is a water cavity 27, the inner wall of the water cavity 27 is fixedly connected with an inner tube 26, an air cavity 28 is opened inside the inner tube 26, and the outer wall of the inner tube 26 is fixedly connected with a plurality of nozzles 16, the other ends of the plurality of nozzles 16 all penetrate the outer tube 15, and the other ends of the plurality of nozzles 16 are all aimed at the outer wall of the oxygen gun. The upper surface of the mounting frame 1 is connected with a cooling mechanism and two oxygen supply mechanisms, the output end and the input end of the cooling mechanism are respectively fixedly connected with the two ends of the two outer tubes 15, and the output ends of the two oxygen supply mechanisms respectively penetrate the two outer tubes 15 and are fixedly connected with one end of the two inner tubes 26.

[0020] like Figures 1 to 10 As shown, when the surface of the oxygen lance needs to be cleaned by the rapid purge oxygen lance cleaning device of the present invention, only the following steps need to be followed: 1. First, remotely open the lifting mechanism between the two support frames 2 of the mounting frame 1 through an external PLC controller.

[0021] 2. After the lifting mechanism is started, it will drive the suspension assembly to descend along the lifting port 29 and stop after the two outer tubes 15 are lowered to the two sides of the oxygen gun.

[0022] 3. At this time, the external PLC controller remotely starts the two tilting mechanisms again. After the two tilting mechanisms are started, they will push the two outer tubes 15 toward the center oxygen gun from one end of the two outer tubes 15 until the two outer tubes 15 are at 90° and then stop. At this time, the oxygen gun is located between the two outer tubes 15.

[0023] 4. Then the external PLC controller remotely starts the cooling mechanism and the two oxygen supply mechanisms at the same time. After the two oxygen supply mechanisms are started, they will transport oxygen to the two inner tubes 26 inside the two outer tubes 15 respectively. The transported oxygen will be sprayed from the nozzles 16 to the outer wall of the oxygen gun, and then aerosol will be formed around the oxygen gun to burn the high-temperature slag on the gun body.

[0024] 5. When the cooling mechanism is started, the coolant will be transported to the upper end of the water cavity 27 of the outer tube 15, and then the coolant will return from the lower end of the water cavity 27 to form a cycle; and because the inner tube 26 is located in the water cavity 27, during the circulation of the coolant, the outside of the inner tube 26 and the inner wall of the outer tube 15 will continue to cool down to avoid being greatly affected.

[0025] 6. After the surface of the oxygen lance is cleaned, the two outer tubes 15 can be retracted to the top of the lifting port 29 according to the above steps, which will not affect the normal operation of the oxygen lance below.

[0026] It should be noted here that the oxygen gun and external PLC controller mentioned above are both existing technologies, so they are not specifically described or described in detail in the figures.

[0027] As a preferred solution of the present invention, the side walls of the two support frames 2 are penetrated with sliding openings 3 , and the lifting mechanisms are respectively located in the two sliding openings 3 .

[0028] More specifically, by providing the sliding opening 3, the lifting mechanism can be supported and housed, thereby avoiding occupying external space and not affecting the normal lifting of the suspension assembly.

[0029] As a preferred solution of the present invention, the lifting mechanism includes a lifting motor 4, a screw rod 5 and a sliding rod 6. The outer wall of the lifting motor 4 is fixedly connected to the upper surface of one of the support frames 2, the output shaft of the lifting motor 4 is fixedly connected to one end of the screw rod 5, the other end of the screw rod 5 passes through the connected support frame 2 and is rotatably connected to the inner wall of the support frame 2, the two ends of the sliding rod 6 are fixedly connected to the upper and lower inner walls of the sliding mouth 3 of the other support frame 2, and the two ends of the suspension assembly are respectively connected to the screw rod 5 and the sliding rod 6.

[0030] More specifically, when it is necessary to control the lifting of the suspension component, it is only necessary to turn on the lifting motor 4, and the output shaft of the lifting motor 4 can drive the screw rod 5 to rotate. After the screw rod 5 rotates, it can cooperate with the sliding rod 6 at the other end to lift the middle suspension component along the screw rod 5 and the sliding rod 6.

[0031] As a preferred solution of the present invention, the suspension assembly includes a movable plate 7 and four hanging plates 19, the two ends of the movable plate 7 are respectively sleeved on the outside of the screw rod 5 and the sliding rod 6, the inner wall of the movable plate 7 is threadedly connected to the outer wall of the screw rod 5, the inner wall of the movable plate 7 is slidingly connected to the outer wall of the sliding rod 6, the four hanging plates 19 are divided into two groups, the upper ends of the two groups of hanging plates 19 are fixedly connected to the bottom surface of the movable plate 7, the lower ends of the two groups of hanging plates 19 are respectively rotatably connected to the outer walls of the two outer tubes 15 through a rotating shaft, and the ends of the two tilting mechanisms away from the outer tube 15 are connected to the bottom surface of the movable plate 7.

[0032] More specifically, when the lifting motor 4 is started, the screw rod 5 and the sliding rod 6 will drive the moving plate 7 to rise at the same time from both ends of the moving plate 7. After the moving plate 7 rises, it will drive the four hanging plates 19 and the two tilting mechanisms below to rise together. After the four hanging plates 19 and the two tilting mechanisms rise, they can drive the two outer tubes 15 to rise and fall together.

[0033] As a preferred solution of the present invention, the tilting mechanism includes a connecting plate 25, a hydraulic push rod 24, two fixed blocks 22 and two rotating blocks 23. The upper ends of the two fixed blocks 22 are fixedly connected to the bottom surface of the movable plate 7. The upper end of the connecting plate 25 is located between the two fixed blocks 22 and is connected to the internal rotation of the two fixed blocks 22 through a rotating shaft. The lower end of the connecting plate 25 is fixedly connected to the outer wall of the hydraulic push rod 24. The lower ends of the two rotating blocks 23 are fixedly connected to the outer wall of the outer tube 15. The output end of the hydraulic push rod 24 is located between the two rotating blocks 23 and is connected to the internal rotation of the two rotating blocks 23 through a rotating shaft.

[0034] More specifically, when it is necessary to control the tilt angle of the outer tube 15, it is only necessary to start the hydraulic push rod 24 through the external PLC controller. After the hydraulic push rod 24 is started, the output end is pushed outward or retracted, and the outer tube 15 can be pulled together by the two rotating blocks 23, thereby realizing the control of the tilt angle of the outer tube 15.

[0035] As a preferred solution of the present invention, the cooling mechanism comprises a cooling box 12, two return liquid pipes 13, two outlet liquid pipes 20 and four coolant connectors 14, the outer wall of the cooling box 12 is fixedly connected to the upper surface of the mounting frame 1, one end of the two return liquid pipes 13 and the two outlet liquid pipes 20 are fixedly connected to the cooling box 12, the other ends of the two return liquid pipes 13 and the two outlet liquid pipes 20 are respectively threadedly connected to one end of the four coolant connectors 14, one return liquid pipe 13, one outlet liquid pipe 20 and two coolant connectors 14 form a group, and the other ends of the two groups of coolant connectors 14 are respectively fixedly connected to the two ends of the two outer tubes 15.

[0036] More specifically, when the outer tube 15 and the inner tube 26 need to be cooled, it is only necessary to turn on a compressor, a cooling circulation pump, etc. (this is a very common cooling circulation equipment in the prior art, so it is not described in detail) located inside the cooling box 12 to transport the coolant inside the cooling box 12 through the liquid outlet pipe 20 to the coolant connector 14, and then the coolant will enter the water cavity 27, and after cooling the inner tube 26, it will flow out from the coolant connector 14 at the lower end of the outer tube 15, and finally return to the cooling box 12 from the return pipe 13 to form a circulation.

[0037] As a preferred solution of the present invention, the outer walls of the two outer tubes 15 are fixedly connected with support rods 17 , and the other ends of the two support rods 17 are fixedly connected with collars 18 , which are respectively sleeved on the outside of the two liquid return pipes 13 .

[0038] More specifically, by providing the support rod 17 and the collar 18, the liquid return pipe 13 can be supported, so that the liquid return pipe 13 can be prevented from tilting or bending toward the oxygen lance, thereby causing damage to itself.

[0039] It should be noted that the number of the support rods 17 and the collars 18 is not limited to one. If the curvature of the liquid return pipe 13 is relatively large, more support rods 17 and collars 18 may be provided to limit the curvature.

[0040] As a preferred embodiment of the present invention, the oxygen supply mechanism includes an oxygen point valve box 8, a solenoid valve 9, a flame arrester 10, an oxygen tube 11 and an oxygen connector 21. The outer wall of the oxygen point valve box 8 is fixedly connected to the upper surface of the mounting frame 1, one side of the oxygen point valve box 8 is fixedly connected to one end of the oxygen tube 11, the other end of the oxygen tube 11 passes through the outer tube 15 and is threadedly connected to one end of the oxygen connector 21, the other end of the oxygen connector 21 is fixedly connected to one end of the inner tube 26, the solenoid valve 9 and the flame arrester 10 are both installed on the oxygen tube 11, and the solenoid valve 9 is located near one end of the oxygen point valve box 8.

[0041] More specifically, when it is necessary to blow oxygen to the surface of the oxygen lance, the oxygen only needs to be transported to the oxygen pipe 11 through the oxygen point valve box 8, and then it can be sprayed to the surface of the oxygen lance through the inner pipe 26 and the plurality of nozzles 16.

[0042] Finally, it is important to note that: 1. The liquid return pipe 13, liquid outlet pipe 20 and oxygen pipe 11 mentioned above are all soft tubes, which are flexible and can be bent to a certain extent, so as to avoid damage.

[0043] 2. Hydraulic push rod 24: The front end is about 40m long and is made of a thick-walled steel pipe with an outer diameter of 8cm. The push rod has a telescopic stroke of 30cm and is used to control the closing of the semi-ring pipe.

[0044] 3. Two outer tubes 15 and two inner tubes 26 form a two-layer casing. The tube wall is made of stainless steel tube, φ: DN25 / DN20, seamlessly welded, oxygen is passed through the inner layer, and a hydraulic push rod 24 is used to control the movement of the semi-ring tube. After the semi-ring tube is closed, the inner diameter is 90cm (equal to the design diameter of the oxygen gun nozzle). After the oxygen is turned on, aerosol is formed around the oxygen gun to burn the high-temperature steel slag on the gun body.

[0045] 4. Flame arrester 10, to prevent oxygen flashback.

[0046] 5. Solenoid valve 9 can realize remote control of oxygen switch.

[0047] 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 rapid purge oxygen lance cleaning device, comprising a mounting frame (1) located outside the oxygen lance, characterized in that: The upper surface of the mounting frame (1) is provided with a lifting opening (29) through which the upper surface of the mounting frame (1) is fixedly connected to a support frame (2), the two support frames (2) are respectively located on both sides of the lifting opening (29), and a lifting mechanism is connected between the two support frames (2), the output end of the lifting mechanism is connected to a suspension component, the other end of the suspension component is connected to two outer tubes (15) and two tilting mechanisms, the outer walls of the two outer tubes (15) are respectively connected to one end of the two tilting mechanisms away from the suspension component, the two outer tubes (15) are provided with a water cavity (27) inside, and the inner wall of the water cavity (27) An inner tube (26) is fixedly connected, an air cavity (28) is opened inside the inner tube (26), a plurality of nozzles (16) are fixedly connected to the outer wall of the inner tube (26), the other ends of the plurality of nozzles (16) all penetrate the outer tube (15), the other ends of the plurality of nozzles (16) are all aligned with the outer wall of the oxygen gun, and a cooling mechanism and two oxygen supply mechanisms are connected to the upper surface of the mounting frame (1), the output end and the input end of the cooling mechanism are respectively fixedly connected to the two ends of the two outer tubes (15), and the output ends of the two oxygen supply mechanisms respectively penetrate the two outer tubes (15) and are fixedly connected to one end of the two inner tubes (26).

2. A fast purge oxygen lance cleaning device according to claim 1, characterized in that: The side walls of the two support frames (2) are both penetrated by a sliding opening (3), and the lifting mechanisms are respectively located in the two sliding openings (3).

3. A fast purge oxygen lance cleaning device according to claim 2, characterized in that: The lifting mechanism comprises a lifting motor (4), a screw rod (5) and a sliding rod (6); the outer wall of the lifting motor (4) is fixedly connected to the upper surface of one of the support frames (2); the output shaft of the lifting motor (4) is fixedly connected to one end of the screw rod (5); the other end of the screw rod (5) passes through the connected support frame (2) and is rotatably connected to the inner wall of the support frame (2); the two ends of the sliding rod (6) are fixedly connected to the upper and lower inner walls of the sliding opening (3) of the other support frame (2); and the two ends of the suspension component are respectively connected to the screw rod (5) and the sliding rod (6).

4. A fast purge oxygen lance cleaning device according to claim 3, characterized in that: The suspension assembly comprises a movable plate (7) and four hanging plates (19), the two ends of the movable plate (7) are respectively sleeved on the outside of the screw rod (5) and the sliding rod (6), the inner wall of the movable plate (7) is threadedly connected to the outer wall of the screw rod (5), the inner wall of the movable plate (7) is slidably connected to the outer wall of the sliding rod (6), the four hanging plates (19) are divided into two groups, the upper ends of the two groups of hanging plates (19) are fixedly connected to the bottom surface of the movable plate (7), the lower ends of the two groups of hanging plates (19) are respectively rotatably connected to the outer walls of the two outer tubes (15) via rotating shafts, and the ends of the two tilting mechanisms away from the outer tubes (15) are connected to the bottom surface of the movable plate (7).

5. A fast purge oxygen lance cleaning device according to claim 4, characterized in that: The tilting mechanism comprises a connecting plate (25), a hydraulic push rod (24), two fixed blocks (22) and two rotating blocks (23); the upper ends of the two fixed blocks (22) are fixedly connected to the bottom surface of the movable plate (7); the upper end of the connecting plate (25) is located between the two fixed blocks (22) and is rotatably connected to the inside of the two fixed blocks (22) via a rotating shaft; the lower end of the connecting plate (25) is fixedly connected to the outer wall of the hydraulic push rod (24); the lower ends of the two rotating blocks (23) are fixedly connected to the outer wall of the outer tube (15); and the output end of the hydraulic push rod (24) is located between the two rotating blocks (23) and is rotatably connected to the inside of the two rotating blocks (23) via a rotating shaft.

6. A fast purge oxygen lance cleaning device according to claim 1, 2, 3, 4 or 5, characterized in that: The cooling mechanism comprises a cooling box (12), two liquid return pipes (13), two liquid outlet pipes (20) and four coolant connectors (14); the outer wall of the cooling box (12) is fixedly connected to the upper surface of the mounting frame (1); one end of the two liquid return pipes (13) and the two liquid outlet pipes (20) are fixedly connected to the cooling box (12); the other ends of the two liquid return pipes (13) and the two liquid outlet pipes (20) are respectively threadedly connected to one end of the four coolant connectors (14); a liquid return pipe (13), a liquid outlet pipe (20) and two coolant connectors (14) form a group; the other ends of the two groups of coolant connectors (14) are respectively fixedly connected to the two ends of the two outer pipes (15).

7. A fast purge oxygen lance cleaning device according to claim 6, characterized in that: The outer walls of the two outer tubes (15) are fixedly connected to support rods (17), the other ends of the two support rods (17) are fixedly connected to collars (18), and the two collars (18) are respectively sleeved on the outside of the two liquid return tubes (13).

8. A fast purge oxygen lance cleaning device according to claim 1, 2, 3, 4, 5 or 7, characterized in that: The oxygen supply mechanism comprises an oxygen point valve box (8), a solenoid valve (9), a flame arrester (10), an oxygen tube (11) and an oxygen connector (21); the outer wall of the oxygen point valve box (8) is fixedly connected to the upper surface of the mounting frame (1); one side of the oxygen point valve box (8) is fixedly connected to one end of the oxygen tube (11); the other end of the oxygen tube (11) passes through the outer tube (15) and is threadedly connected to one end of the oxygen connector (21); the other end of the oxygen connector (21) is fixedly connected to one end of the inner tube (26); the solenoid valve (9) and the flame arrester (10) are both mounted on the oxygen tube (11), and the solenoid valve (9) is located at one end close to the oxygen point valve box (8).

9. A fast purge oxygen lance cleaning device according to claim 6, characterized in that: The oxygen supply mechanism comprises an oxygen point valve box (8), a solenoid valve (9), a flame arrester (10), an oxygen tube (11) and an oxygen connector (21); the outer wall of the oxygen point valve box (8) is fixedly connected to the upper surface of the mounting frame (1); one side of the oxygen point valve box (8) is fixedly connected to one end of the oxygen tube (11); the other end of the oxygen tube (11) passes through the outer tube (15) and is threadedly connected to one end of the oxygen connector (21); the other end of the oxygen connector (21) is fixedly connected to one end of the inner tube (26); the solenoid valve (9) and the flame arrester (10) are both mounted on the oxygen tube (11), and the solenoid valve (9) is located at one end close to the oxygen point valve box (8).

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