CN216378280U

CN216378280U - Novel oxygen lance slag scraper

Info

Publication number: CN216378280U
Application number: CN202123204950.0U
Authority: CN
Inventors: 高玉山; 魏世龙; 刘冉
Original assignee: Weifang Junlin Metallurgical Engineering Technology Co ltd
Current assignee: Weifang Junlin Metallurgical Engineering Technology Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-04-26
Anticipated expiration: 2031-12-20

Abstract

The utility model belongs to the technical field of accessories of metallurgical equipment, and particularly relates to a novel oxygen lance slag scraper which comprises two rails which are arranged symmetrically at a certain distance, wherein a connecting plate is fixedly connected between the two rails at positions close to the two ends of the two rails, two symmetrically-arranged sliding trolleys are connected between the two rails in a sliding manner, one ends of the two sliding trolleys close to each other are fixedly connected with a scraper device, the scraper device comprises an installation frame fixedly connected with the sliding trolleys, two symmetrically-arranged scraper assemblies are rotatably connected onto the installation frame, a reset device for driving the scraper assemblies to reset is arranged between the scraper assemblies and the installation frame, and driving devices for driving the corresponding sliding trolleys to move are arranged on the connecting plates; the utility model has reasonable structure and convenient replacement, is suitable for treating the steel slag of the irregular oxygen lance, protects the oxygen lance and improves the slag scraping efficiency of the oxygen lance.

Description

Novel oxygen lance slag scraper

Technical Field

The utility model belongs to the technical field of metallurgical equipment accessories, and particularly relates to a novel oxygen lance slag scraper.

Background

An oxygen lance is important equipment for converter steelmaking, the oxygen lance works at high temperature in a converter, severe oxidation reaction occurs in a hearth, the oxygen lance is one of key parts of an oxygen blowing device of the converter, oxygen is blown into the converter by the oxygen lance in the smelting process to complete a steelmaking smelting task, high-pressure nitrogen is blown into the converter by the oxygen lance to complete a slag splashing furnace protection task when slag splashing furnace protection is carried out after blowing, the steel lance is inserted into the converter to blow oxygen or blown into the high-pressure nitrogen, slag and steel are easily adhered by the oxygen lance due to fluctuation of furnace burden quality or improper operation of lance position, steel slag with different thicknesses is splashed on an outer steel pipe of the oxygen lance, the steel slag is tightly wrapped around the oxygen lance due to contraction under cooling of the oxygen lance, accumulated nodulation of the steel slag is accumulated to a certain degree more and more, the nodulation of the oxygen lance is formed, the nodulation is too large and cannot be normally lifted when the oxygen lance is serious, the oxygen lance can not enter and exit the nitrogen seal, if the forced operation is carried out, the oxygen lance lifting motor can be burnt out or the steel wire rope can be broken, so that the steel making and the oxygen lance replacement can be forcibly stopped, the production is stopped, the normal production is influenced, and potential safety hazards are remained.

At this time, the oxygen lance stuck with slag can only be cut off by a flame cutting machine, the cut oxygen lance is dismantled, and a new oxygen lance is replaced, so that the service life of the oxygen lance is greatly reduced, the loss cost of the oxygen lance is increased, the continuity of steel-making production is damaged by frequently cutting and replacing the lance, and the labor intensity of workers is increased.

The oxygen lance slag scraper has the advantages that the oxygen lance slag scraper plays an important role in slag removal of the oxygen lance, the appearance of the oxygen lance slag scraper is similar to a gear, and the scraper is similar to gear teeth.

The oxygen lance slag scraper with the structure has a plurality of disadvantages, for example, the method is very effective for pure slag bonded by the oxygen lance, but the slag bonded by the oxygen lance is often a mixture of slag and steel in practice, and is difficult to remove due to the fact that the strength and the toughness of the slag bonded by the oxygen lance are both large.

The oxygen lance slag scraper is only suitable for a conventional oxygen lance, like a conical lance, which is an irregular oxygen lance with a large upper part and a small lower part, the lower part of the oxygen lance is thinner and thinner along with the lifting of the oxygen lance, and the bonded steel slag at the lower part of the oxygen lance can not be effectively contacted with the scraper, so the steel slag can not be removed in time.

The slag scraping structure part of the slag scraper is a part which is extremely easy to wear and consume, and needs to be replaced regularly after being used for a period of time, and a large amount of manpower and material resources need to be consumed for each replacement, so that the production efficiency is influenced, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the main technical problem of providing a novel oxygen lance slag scraper which has reasonable structure and convenient replacement and is suitable for irregular oxygen lances.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model provides a sediment ware is scraped to new-type oxygen rifle, two tracks of laying including interval certain distance and symmetry, the equal rigid coupling in position department that is close to its both ends between two tracks has the connecting plate, sliding connection has two dollies that slide that the symmetry was laid between two tracks, the equal fixedly connected with scraper device of one end that two dollies are close to each other, scraper device includes the mounting bracket with dolly fixed connection slides, it is two scraper subassemblies that the symmetry was laid to rotate to be connected with on the mounting bracket, be provided with the resetting means who is used for driving scraper subassembly and resets between scraper subassembly and the mounting bracket, all install the drive arrangement who is used for the drive and the dolly that slides rather than corresponding and remove on the connecting plate.

The following is a further optimization of the above technical solution of the present invention:

the scraper component comprises a mounting plate, a mounting block is fixedly connected to the side, close to the mounting frame, of the mounting plate, a pin shaft is rotatably connected to the inside of the mounting block, the pin shaft is fixedly connected with the mounting frame, and a slag scraper is detachably and fixedly connected to the side, far away from the mounting frame, of the mounting plate.

Further optimization: the side surface of the slag scraping knife, which is far away from the mounting plate, is provided with a slag scraping groove, and the cross section of the slag scraping groove is of an arc structure.

Further optimization: the slag scraping knife comprises a knife body, a knife edge part is fixedly connected to the lower end of the knife body integrally, and the cross section of the knife edge part is of a triangular structure.

Further optimization: the side of the mounting plate far away from the mounting frame is fixedly connected with a wheel carrier at a position above the slag scraping knife, the wheel carrier is fixedly connected with a wheel shaft, and the wheel shaft is rotatably connected with a positioning wheel.

Further optimization: the resetting device comprises two resetting components which are respectively arranged on two sides of the pin shaft.

Further optimization: reset assembly includes the spring housing, and the spring housing rigid coupling has the fore-set in the inside of mounting bracket, and sliding connection has the fore-set in the spring housing, and the one end that the fore-set is close to the mounting panel extends to the outside of spring housing and contacts with the mounting panel, is provided with powerful spring in the spring housing.

Further optimization: the bottom surface of the track is fixedly connected with a steel slag collecting box which is of a horn-shaped structure.

Further optimization: the sliding trolley comprises a trolley frame, a plurality of trolley pulleys are rotatably connected to two sides of the trolley frame, and the trolley pulleys are in sliding connection with corresponding tracks.

Further optimization: the driving device comprises a connecting frame, the connecting frame is fixedly connected with the connecting plate, a push-pull air cylinder is hinged to the connecting frame, a connecting block is fixedly connected to a piston rod of the push-pull air cylinder, and the connecting block is rotatably connected with the trolley frame.

According to the utility model, through reasonable design, the scraper component can swing freely, the angle of the scraper component is adjusted timely continuously along with the continuous propulsion of the sliding trolley to the oxygen lance and the gradual lifting of the oxygen lance, and the slag scraper always contacts with steel slag attached to the surface of the oxygen lance, so that the slag scraper not only can adapt to the oxygen lances with different calibers, but also can adapt to the special-shaped oxygen lance with a conical shape, the problem that the traditional oxygen lance slag scraper can only be suitable for the oxygen lance with a single calibre or a straight lance, and for the special-shaped oxygen lance (such as a conical lance) or the oxygen lances with different calibers, the problem that the structure can be redesigned and the slag scraper with different specifications can be replaced is solved, and a large amount of resource waste is avoided;

through the arrangement of the reset device, the scraper component is timely helped to be restored to a normal state when the slag scraping operation is finished so as to facilitate the next slag scraping operation, a certain limiting effect is achieved, the phenomenon that the scraper component swings too much and can not normally scrape slag is avoided, and the scraper component is helped to adjust the position at any time in the slag scraping operation engineering of the conical oxygen lance so that the slag scraper always effectively contacts with steel slag attached to the surface of the oxygen lance;

through the arrangement of the positioning wheel, when slag scraping operation is carried out, the positioning wheel firstly contacts the oxygen lance, and the slag scraping knife and the oxygen lance body keep a certain safe distance, so that the abrasion of the slag scraping knife is slowed down, and the oxygen lance is protected;

when the slag scraping operation is performed, the steel slag collecting box can collect the scraped steel slag, and the steel slag falls into the furnace in a smooth manner during and after the operation, so that the steel slag accumulation near the slag scraper is reduced, the field working environment is improved, and the cleaning operation time is shortened.

The utility model is further illustrated with reference to the following figures and examples.

Drawings

FIG. 1 is a schematic top view of an embodiment of the present invention;

FIG. 2 is a schematic diagram of an internal side view of an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a sliding trolley and a scraper device in an embodiment of the utility model;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;

FIG. 5 is a schematic view of the construction of a doctor apparatus according to an embodiment of the utility model;

FIG. 6 is a schematic view of the working states of the positioning wheel and the slag scraping knife in the embodiment of the utility model;

FIG. 7 is a schematic structural diagram of a reset assembly in an embodiment of the present invention;

FIG. 8 is a schematic view showing the operation of the embodiment of the present invention when cleaning steel slag on the coarse diameter position of the oxygen lance;

FIG. 9 is a schematic view showing the operation of the embodiment of the present invention when cleaning steel slag at the position of the oxygen lance diameter.

In the figure: 1-a track; 101-a track groove; 2-a sliding trolley; 201-a trolley frame; 202-trolley pulleys; 203-cylinder connection plate; 3-a scraper device; 301-a mounting frame; 302-pin shaft; 303-a mounting plate; 304-a slag scraping knife; 3041-a knife body; 3042-a knife edge; 3043-a knife tip; 305-a wheel carrier; 306-an axle; 307-positioning wheels; 308-a reset component; 3081-spring housing; 3082-top pillar; 3083-strong spring; 3084-blocking block; 309-mounting block; 4-a drive device; 401-a connecting frame; 402-push-pull air cylinder; 403-connecting block; 5-a slag scraper cover plate; 6-oxygen lance; 7-a connecting plate; 8-steel slag collecting box.

Detailed Description

Example (b):

as shown in figures 1-7, the novel oxygen lance slag scraper comprises two rails 1 which are arranged symmetrically at a certain distance, and two sliding trolleys 2 which are arranged symmetrically are connected between the two rails 1 in a sliding manner.

The equal rigid coupling in position department of being close to its both ends between two track 1 has connecting plate 7, has all seted up track groove 101 in the track 1, and two track grooves 101 are the symmetry and lay.

And the connecting plates 7 are respectively provided with a driving device 4 for driving the corresponding sliding trolley 2 to move.

The equal fixedly connected with scraper device 3 of one end that two dollies 2 are close to each other that slide, scraper device 3 include with dolly 2 fixed connection's that slides mounting bracket 301, rotate on mounting bracket 301 and be connected with two scraper subassemblies that are the symmetry and lay, be provided with the resetting means who is used for driving scraper subassembly and resets between scraper subassembly and the mounting bracket 301.

Two slag scraper cover plates 5 are fixedly connected to the top surface of the track 1.

The design prevents the steel slag from falling to the sliding trolley 2 and the driving device 4 and influences the work of the sliding trolley 2 and the driving device 4.

As shown in fig. 3, the mounting frame 301 includes a first supporting plate, two ends of the first supporting plate are integrally and fixedly connected to a second supporting plate, the two second supporting plates are symmetrically disposed, and the second supporting plate and the first supporting plate are disposed at an included angle.

As shown in fig. 4-6, the scraper assembly includes a mounting plate 303, a mounting block 309 is fixedly connected to a side surface of the mounting plate 303 close to the second support plate, a pin 302 is rotatably connected to the mounting block 309, and the pin 302 is fixedly connected to the corresponding second support plate.

So designed, the scraper component can swing back and forth according to the shape of the oxygen lance as the oxygen lance 6 is lifted and driven by the driving device 4, as shown in figures 8 and 9, so as to adapt to the shape size of the oxygen lance at different diameter positions.

The side of the mounting plate 303 far away from the second support plate is detachably and fixedly connected with a slag scraping knife 304.

By adopting the design, the slag scraping knife 304 is convenient to replace.

The side surface of the slag scraping knife 304, which is far away from the mounting plate 303, is provided with a slag scraping groove, the cross section of the slag scraping groove is of an arc-shaped structure, and the structure of the slag scraping groove is matched with the structure of the oxygen lance 7.

By the design, the contact area of the slag scraper 304 and the steel slag attached to the surface of the oxygen lance 6 is increased, and the slag scraping efficiency is improved.

The slag scraping knife 304 includes a knife body 3041, a knife edge portion 3042 integrally and fixedly connected to a lower end of the knife body 3041, and the cross section of the knife edge portion 3042 is a triangular structure.

A wheel carrier 305 is fixedly connected to the side surface of the mounting plate 303 far away from the second support plate and above the slag scraping knife 304, a wheel shaft 306 is fixedly connected to the wheel carrier 305, a positioning wheel 307 is rotatably connected to the wheel shaft 306, and the outer surface of the positioning wheel 307 is in contact with the outer surface of the oxygen lance 7.

By the design, as shown in fig. 6, the position where the positioning wheel 307 contacts the oxygen lance 7 is on the same vertical line or is an accessory of the same vertical line with the tool tip 3043 of the slag scraping knife 304, and the oxygen lance 7 is in a cone structure with a thick upper part and a thin lower part, so that the positioning wheel 307 contacts the oxygen lance 7 first, and the slag scraping knife 304 and the oxygen lance 7 keep a certain safety distance at the moment, thereby not only slowing down the abrasion of the scraper, but also protecting the oxygen lance 7 and effectively cleaning steel slag.

The resetting device comprises two resetting components 308, and the two resetting components 308 are respectively arranged at two sides of the pin shaft 302.

The two reduction assemblies 308 are arranged in a symmetrical structure.

As shown in fig. 7, the restoring assembly 308 includes a spring housing 3081, the spring housing 3081 is fixed inside the second supporting plate, a top pillar 3082 is slidably connected in the spring housing 3081, and an end of the top pillar 3082 near the mounting plate 303 extends to the outside of the spring housing 3081 and contacts with the mounting plate 303.

A stopper 3084 is fixedly connected to one end, far away from the mounting plate 303, of the spring sleeve 3081, a strong spring 3083 is arranged in the spring sleeve 3081, and two ends of the strong spring 3083 are respectively abutted to the top post 3082 and the stopper 3084.

The sliding trolley 2 comprises a trolley frame 201, a plurality of trolley pulleys 202 are rotatably connected to two sides of the trolley frame 201, and the trolley pulleys 202 are in sliding connection with the corresponding track grooves 101.

The driving device 4 comprises a connecting frame 401, the connecting frame 401 is fixedly connected with the connecting plate 7, a push-pull air cylinder 402 is hinged on the connecting frame 401, a connecting block 403 is fixedly connected to a piston rod of the push-pull air cylinder 402, an air cylinder connecting plate 203 is fixedly connected to the side face, far away from the scraper device 3, of the trolley frame 201, and the connecting block 403 is rotatably connected with the air cylinder connecting plate 203.

The bottom surface of track 1 is fixed with slag collection box 8, and slag collection box 8 is the horn structure that link up from top to bottom.

The steel slag collecting box 8, the oxygen lance 6 and the furnace mouth are arranged coaxially.

By the design, when the slag scraping operation is performed, the steel slag collecting box 8 can collect the scraped steel slag, and the steel slag falls into the furnace in the working process and at the end of the working process, so that the steel slag accumulation nearby a slag scraper is reduced, the field working environment is improved, and the cleaning operation time is shortened.

It will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments described above without departing from the principles and spirit of the utility model, the scope of which is defined by the appended claims.

Claims

1. The utility model provides a sediment ware is scraped to new-type oxygen rifle, includes two tracks (1) that certain distance of interval and symmetry were laid, its characterized in that: the equal rigid coupling in position department of being close to its both ends between two track (1) has connecting plate (7), sliding connection has two dolly (2) that slide that are the symmetry and lay between two track (1), the equal fixedly connected with scraper device (3) of one end that two dolly (2) that slide are close to each other, scraper device (3) include with dolly (2) fixed connection's that slides mounting bracket (301), it is two scraper subassemblies that the symmetry was laid to rotate to be connected with on mounting bracket (301), be provided with the resetting means who is used for driving the scraper subassembly and resets between scraper subassembly and mounting bracket (301), all install drive arrangement (4) that are used for driving dolly (2) that slide rather than corresponding and remove on connecting plate (7).

2. The lance slag scraper as claimed in claim 1, wherein: the scraper component comprises a mounting plate (303), a mounting block (309) is fixedly connected to the side face, close to the mounting frame (301), of the mounting plate (303), a pin shaft (302) is rotatably connected to the mounting block (309), the pin shaft (302) is fixedly connected with the mounting frame (301), and a slag scraping knife (304) is detachably and fixedly connected to the side face, far away from the mounting frame (301), of the mounting plate (303).

3. The lance slag scraper as claimed in claim 2, wherein: the side surface of the slag scraping knife (304) far away from the mounting plate (303) is provided with a slag scraping groove, and the cross section of the slag scraping groove is of an arc structure.

4. The lance slag scraper as claimed in claim 3, wherein: the slag scraping knife (304) comprises a knife body (3041), a knife edge part (3042) is integrally and fixedly connected to the lower end of the knife body (3041), and the cross section of the knife edge part (3042) is of a triangular structure.

5. The lance slag scraper as claimed in claim 4, wherein: the side surface of the mounting plate (303) far away from the mounting frame (301) and positioned above the slag scraping knife (304) is fixedly connected with a wheel frame (305), a wheel shaft (306) is fixedly connected on the wheel frame (305), and a positioning wheel (307) is rotatably connected on the wheel shaft (306).

6. The lance slag scraper as claimed in claim 5, wherein: the resetting device comprises two resetting components (308), wherein the two resetting components (308) are respectively arranged on two sides of the pin shaft (302).

7. The lance slag scraper as claimed in claim 6, wherein: reset block (308) include spring housing (3081), and spring housing (3081) rigid coupling has fore-set (3082) in the inside of mounting bracket (301), sliding connection has in spring housing (3081), and fore-set (3082) are close to the outside that the one end of mounting panel (303) extended to spring housing (3081) and contact with mounting panel (303), are provided with powerful spring (3083) in spring housing (3081).

8. The lance slag scraper as claimed in claim 7, wherein: the bottom surface of the track (1) is fixedly connected with a steel slag collecting box (8), and the steel slag collecting box (8) is of a trumpet-shaped structure.

9. The lance slag scraper as claimed in claim 8, wherein: the sliding trolley (2) comprises a trolley frame (201), a plurality of trolley pulleys (202) are rotatably connected to the two sides of the trolley frame (201), and the trolley pulleys (202) are in sliding connection with the corresponding rails (1).

10. The lance slag scraper as claimed in claim 9, wherein: the driving device (4) comprises a connecting frame (401), the connecting frame (401) is fixedly connected with the connecting plate (7), a push-pull air cylinder (402) is hinged to the connecting frame (401), a connecting block (403) is fixedly connected to a piston rod of the push-pull air cylinder (402), and the connecting block (403) is rotatably connected with the trolley frame (201).