WO2024087425A1

WO2024087425A1 - Support directly-connected automatic air-cooling converter slide plate slag stopping device

Info

Publication number: WO2024087425A1
Application number: PCT/CN2023/077422
Authority: WO
Inventors: 万立新; 徐跃庆; 李宏宇; 梁保青; 张江伟; 任池喜; 王常伟; 尚俊利; 张志峰; 赵志浩; 王海霞
Original assignee: 河南熔金高温材料股份有限公司
Priority date: 2022-10-28
Filing date: 2023-02-21
Publication date: 2024-05-02
Also published as: CN115927786A

Abstract

A support directly-connected automatic air-cooling converter slide plate slag stopping device. In the device, gas intake devices are arranged on a connecting plate (10); and air-cooling sealing devices (31) are arranged on a support (30). When a slag stopping mechanism is replaced online, gas intake bolts (11) of the gas intake devices can be automatically butt-joined in a sealed manner to T-shaped air-cooling pipes (32) of the air-cooling sealing devices (31) to form a fully-sealed pipeline for introducing a cooling gas. The overall cooling effect is good, the online replacement time is short, an offline maintenance operation is simple, maintenance costs are reduced, and the safety of the slag stopping mechanism is improved.

Description

A bracket directly connected automatic air-cooled converter slide plate slag blocking device

Technical Field

The present invention relates to the field of steelmaking machinery technology, and in particular to a bracket directly connected automatic air-cooled converter slide plate slag blocking device.

Background technique

In the modern steelmaking production process, the use of slide plate slag blocking for steel tapping is used in more and more steel mills because of its good slag blocking effect. The slag blocking mechanism is installed on the connecting plate and located outside the steel tapping port. The 1600℃ molten steel flowing out of the steel tapping port will directly bake the slag blocking mechanism. Therefore, the spring in the slag blocking mechanism needs to be cooled by cold air to increase the service life and pressure of the spring in the slag blocking mechanism and improve the safety of the slag blocking mechanism. The online replacement of the slag blocking mechanism is carried out by replacing the slag blocking mechanism as a whole to shorten the online replacement time and improve the steelmaking production efficiency.

Currently, there are two cooling methods for converter slag stop mechanism on the market: Method 1, the cooling air duct on the slag stop mechanism bracket is connected to the cooling air source through a threaded seal. When the slag stop mechanism is replaced online, the cooling air duct is manually removed from the cooling air source and then reconnected. The cooling air duct is manually disassembled and installed under high temperature conditions. This method increases the labor intensity of workers and prolongs the online replacement time by 3-5 minutes (accounting for 20-25% of the entire replacement time of the slag stop mechanism), affecting the production progress. When the production rhythm is tight, the steel mill does not even connect to the cooling air source to save the replacement time of the slag stop mechanism, which seriously affects the service life of the spring and the slag stop mechanism. Method 2: After the cooling air source is introduced through the connecting plate, the spring is cooled by the U-shaped air duct connected between the fixed frame and the bracket. When the slag retaining mechanism is replaced online by this method, a sealing gasket needs to be installed on the bottom of the fixed frame. If the sealing gasket falls off accidentally, the cooling gas will leak between the connecting plate and the fixed frame. At the same time, the U-shaped air duct is exposed to the outside of the slag mechanism, which increases the length of the cooling pipeline and is easily damaged by falling objects and slag. The above factors affect the final cooling effect. When the slag retaining mechanism is offline for maintenance, the U-shaped air duct needs to be removed and reconnected, which increases the labor intensity of workers and increases equipment maintenance costs and material consumption.

Summary of the invention

In order to solve the above problems, the present invention proposes a bracket directly connected automatic air-cooled converter slide slag blocking device.

The technical solution of the present invention is: a bracket directly connected automatic air-cooled converter slide plate slag blocking device, including a connecting plate, a slag blocking mechanism installed on the outer side of the connecting plate, a fixing frame is provided at the lower part of the outer side of the connecting plate, the slag blocking mechanism is hinged to the fixing frame through the bracket, an air path E is vertically provided on the inner side of the surface pressure spring chamber of the bracket, an air path F with the same number as the surface pressure springs is provided between the air path E and the surface pressure spring chamber, and an exhaust hole connected to the surface pressure spring chamber and corresponding to the air path F is provided on the outer side of the bracket;

Two air intake devices are symmetrically provided on both sides of the upper part of the connecting plate, and the air intake devices include two air paths A and air intake bolts vertically arranged in the middle of the upper end surface of the connecting plate. A cold air inlet is provided at the upper end of the air path A, and a threaded hole connected to the lower end of the air path A is horizontally provided in the middle and upper part of the connecting plate. The inner end of the air intake bolt is connected to the threaded hole, and the through hole inside the air intake bolt is set as air path B, and a supporting platform is provided at the outer end of the air intake bolt;

Two air-cooling sealing devices are symmetrically arranged on both sides of the upper end of the bracket, and the air-cooling sealing devices include a T-shaped air-cooling pipe, a sealing spring, an air duct seat and a drainage bolt; a waist-shaped air cavity is arranged inside the upper end of the bracket, and the inner side of the waist-shaped air cavity is connected with the air path E on the bracket, and an air-cooling seat is arranged on the inner side surface of the upper end of the bracket, and an assembly hole that passes through the bracket and the waist-shaped air cavity is arranged in the middle of the air-cooling seat, and the air duct seat is fixedly installed on the air-cooling seat by screws; a T-shaped through hole coaxially corresponding to the assembly hole is arranged in the air duct seat, and the T-shaped air-cooling pipe is matched and fitted in the T-shaped through hole The through hole inside the T-shaped air-cooling pipe is coaxially corresponding to the air intake bolt, and the through hole inside the T-shaped air-cooling pipe is set as the air path C; and a retracted gap m is provided between the T-shaped air-cooling pipe and the air duct seat, a spring groove is provided at the outer end of the T-shaped air-cooling pipe, and the sealing spring is sleeved in the assembly hole and the spring groove. The drainage bolt is threadedly connected in the assembly hole to press the sealing spring, and the outer end face of the T-shaped air-cooling pipe is pressed against the supporting platform of the air intake bolt, and a blind hole is provided at the outer end of the drainage bolt, and the blind hole is set as the air path D. The side walls of the blind hole are evenly distributed with no less than 2 waist-shaped air holes located in the waist-shaped air cavity.

Preferably, the outer port of the threaded hole is provided with a drum-shaped groove, in which a reinforcing pier with a drum-shaped cross-section is fixedly installed. The reinforcing pier is mounted on the air intake bolt to play a role of strengthening fixation.

Preferably, the hole diameter of the intake bolt is 20-24 mm, which is 4-8 mm larger than the inner diameter of the T-shaped air-cooling tube, and allows an eccentricity of 2-4 mm between the T-shaped air-cooling tube and the intake bolt.

Preferably, the apertures of the air circuit A, air circuit B, air circuit C, the inner diameter of the sealing spring, and air circuit D are not smaller than the aperture of the air circuit E, and the aperture of the air circuit E is 16 mm.

Preferably, the T-shaped air-cooling tube is retracted inward by 2-10 mm after being tightened by the air intake bolt, but the outer end of the T-shaped air-cooling tube still protrudes out of the air duct seat by more than 3 mm.

Preferably, the sealing spring is made of high-temperature resistant alloy steel, and its maximum compression amount is greater than the sum of the retraction gap m of the T-shaped air-cooling tube into the air duct seat and the length of the T-shaped air-cooling tube exposed from the air duct seat. After the T-shaped air-cooling tube is tightened by the air intake bolt, the pressure exerted by the sealing spring on the T-shaped air-cooling tube is 15-35kg.

Preferably, a front baffle is provided at the upper end of the air duct seat, and a side baffle is provided on the outer side of the air-cooling sealing device, and the side baffle and the front baffle form an L-shaped T-shaped air-cooling duct protection ring.

Preferably, an anti-fall block is provided at the bottom of the fixed frame, and the anti-fall block corresponds to the position of the anti-fall blind plate under the bracket.

Preferably, hinge seats are provided at the four corners of the fixing frame, hinge holes are provided at the upper and lower ends of the surface pressure spring chamber of the bracket and inside the air-cooled sealing device, the hinge hole and the hinge seat are hinged by a hinge pin, and a dustproof blind plate is provided at the end of the hinge hole of the air-cooled sealing device, and the dustproof blind plate is fixed in the hinge hole by a retaining spring.

Preferably, the side surface of the upper end of the T-shaped air-cooling tube is set as a sealing spherical surface matching the T-shaped through hole in the air duct seat, and the step surface of the T-shaped air-cooling tube is set as a rotating spherical surface, and the corresponding position of the air duct seat is provided with a rotating ball socket corresponding to the rotating spherical surface.

The beneficial technical effects of the present invention are:

(1) The present invention is provided with an air intake device on the connecting plate and an air cooling sealing device on the bracket.

When the slag retaining mechanism is replaced online, the air intake bolt of the air intake device can automatically and sealably dock with the T-shaped air cooling pipe of the air cooling sealing device, automatically forming a fully sealed pipeline for introducing cooling gas, greatly shortening the online replacement time of the slag retaining mechanism. When the slag retaining mechanism is maintained offline, there is no need to inspect and maintain the T-shaped air cooling pipe, sealing spring and other components in the air cooling sealing device, greatly reducing the labor intensity of workers and reducing production costs. The present invention realizes the automatic connection and sealing of the T-shaped air cooling pipe, has good overall cooling effect, short online replacement time, simple offline maintenance operation, reduces maintenance costs, and improves the safety of the slag retaining mechanism. It is an ideal upgraded replacement product for the existing converter slag retaining device.

(2) The air intake device provided on the connecting plate and the air-cooling sealing device provided on the bracket enable the cooling gas to directly enter the spring groove of the bracket through the connecting plate, thereby reducing the circulation links of the cooling gas, shortening the length of the gas pipeline, and achieving a good cooling effect on the pressure spring.

(3) When the slag retaining mechanism is replaced online, the air intake bolt presses against the T-shaped air cooling tube and retracts it to a certain length. The pressure of the sealing spring causes the T-shaped air cooling tube to press against the supporting platform of the air intake bolt. The sealing spherical surface on the outside of the T-shaped air cooling tube ensures that when the T-shaped air cooling tube swings slightly in any direction, it can always maintain close surface contact with the supporting platform of the air intake bolt. The whole process is fully automatic and does not require manual operation. It completes the automatic seamless connection between the air cooling sealing device and the air intake device, forming a continuous sealed cooling pipeline from gas path A to gas path F, effectively reducing the leakage of cooling gas and improving the cooling effect of the surface pressure spring.

(4) The sealing spring is located in the main pipeline of the sealing cooling pipeline. The amount of cold air flowing through the sealing spring is much larger than the amount of air flowing through each surface pressure spring, which improves the cooling effect of the sealing spring. In addition, the sealing spring is made of high-temperature resistant alloy steel which can prolong its service life and does not need to be replaced frequently. At the same time, the sealing spherical surface on the outside of the T-shaped air-cooling tube can make the T-shaped air-cooling tube automatically tilt when the slag retaining mechanism is replaced online, which reduces the direct collision and wear between the T-shaped air-cooling tube and the air intake bolt, and effectively improves the service life of the T-shaped air-cooling tube. Therefore, when the slag retaining mechanism is offline for maintenance, there is no need to inspect and maintain the air-cooling sealing device including the T-shaped air-cooling tube and the sealing spring. When regular inspection and maintenance are required, it can be completed by simply opening the diverter bolt, which reduces the labor intensity of workers and reduces the consumption of spare parts and production costs.

(5) The hole diameter of the air intake bolt is 20-24mm, which is 4-8mm larger than the inner diameter of the T-shaped air cooling tube, and allows the T-shaped air cooling tube and the air intake bolt to have an eccentricity of 2-4mm, which solves the eccentricity problem of the T-shaped air cooling tube and the air intake bolt caused by the position offset of the whole machine when the slag blocking mechanism is replaced online, and ensures the stability of the spring cooling air volume and the cooling effect of the spring. At the same time, the air intake bolt adopts M36-M39 fine thread, and the thick air intake bolt (bolt wall thickness is more than 8 mm) fixes the reinforcing pier more firmly in the drum-shaped groove of the connecting plate, greatly reducing the damage to the air intake bolt caused by collision with foreign objects. The air intake bolt and the reinforcing pier are located directly below the top of the slag blocking mechanism bracket and close to the middle, which effectively avoids the collision of falling objects above the furnace body with the air intake bolt and the reinforcing pier when the slag blocking mechanism is used online, greatly improving the safety of the air intake device.

(6) After being tightened by the air intake bolt, the T-shaped air cooling tube is retracted by 2-10mm and still has a certain length extending out of the air duct seat. Therefore, the T-shaped air cooling tube can be elastically pressed against the air intake bolt. Even if the distance between the two changes, it can still be in a sealed state.

(7) Hinge holes are provided at the upper and lower ends of the surface pressure spring chamber of the air-cooled sealing device and inside the air-cooled sealing device, which increase the support points of the upper hinge pin and improve the safety and stability of the opening and closing operation of the slag retaining mechanism.

(8) The anti-fall block at the bottom of the fixed frame and the anti-fall blind plate under the bracket can effectively prevent foreign objects from falling into the slag blocking mechanism, thereby improving the safety of the slag blocking mechanism.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a front view structural diagram of the slag blocking mechanism and the connecting plate of the present invention (the cylinder driving device is hidden);

FIG2 is an enlarged view of point F of FIG1 ;

FIG3 is a schematic diagram of FIG1 in the direction A (a partial cross-section of the air cooling pipe position, hiding the outer water outlet seat, heat insulation board, top tightener, outer water outlet, side wing guard plate and cylinder drive device);

FIG4 is an enlarged view of point K in FIG3 ;

FIG5 is a schematic front view of a connecting plate of the present invention;

Fig. 6 is a schematic cross-sectional view taken along the line C-C of Fig. 5;

7 is a partial longitudinal sectional schematic diagram of the slag blocking mechanism of the present invention;

FIG8 is a schematic diagram of the three-dimensional structure of the bracket of the present invention;

FIG9 is a schematic diagram of the three-dimensional structure of the reinforced pier of the present invention;

10 is a schematic diagram of the three-dimensional structure of the air intake bolt of the present invention (1/4 cutaway);

11 is a schematic longitudinal section of an air cooling tube of the present invention;

12 is a schematic diagram of the front structure of the diverter bolt of the present invention (partial section);

FIG. 13 is a schematic diagram of the three-dimensional structure of the air duct seat of the present invention (1/4 section).

In the figure, 10. connecting plate, 101. cold air inlet, 102. air path A, 103. drum-shaped groove, 11. air intake bolt, 111. air path B, 112. supporting platform, 12. reinforcing pier, 13. oil cylinder driving device, 20. fixing frame, 21. inner slide plate, 22. inner slide plate clamping device, 201. hinge seat, 202. anti-fall block, 30. bracket, 31. air cooling sealing device, 301. positioning boss, 302. hinge hole, 303. assembly hole, 304. waist-shaped air cavity, 305. air path E, 306. air path F, 307. side baffle, 308. hinge pin, 309. air cooling seat, 310. anti-fall blind plate, 311. exhaust hole, 312. surface pressure spring chamber, 3 2. Air cooling pipe, 321. Gas path C, 322. Sealing spherical surface, 323. Spring groove, 324. Rotating spherical surface, 33. Sealing spring, 34. Drainage bolt, 341. Gas path D, 342. Waist-shaped air hole, 343. Dust-proof blind plate, 344. Gas path blocking plate, 35. Duct seat, 351. T-type through hole, 352. Front baffle, 353. Rotating ball socket, 36. Surface pressure bolt, 37. Fixed slide rail, 38. Spring pressure plate, 381. Surface pressure spring, 382. Spring guide column, 383. Side wing guard plate, 40. Sliding frame, 41. External slide plate, 42. External slide plate clamping device, 43. Movable slide rail, 44. Heat insulation board, 45. External water outlet seat, 46. Tightener, 47. External water outlet.

Implementation

Embodiment 1, referring to Figures 1 – 13 of the specification, a bracket directly connected automatic air-cooled converter slide slag blocking device, comprising a connecting plate, a slag blocking mechanism installed on the outer side of the connecting plate, the slag blocking mechanism comprising a bracket, a sliding frame, an outer water nozzle seat, a tightener, a heat insulation board, an inner slide plate, an outer slide plate, and an outer water nozzle, a fixed frame is provided at the lower part of the outer side of the connecting plate, the slag blocking mechanism is hinged to the fixed frame through the bracket, the sliding frame is arranged between the fixed frame and the bracket, the outer water nozzle seat, the heat insulation board, the tightener and the outer water nozzle are arranged on the outer side of the sliding frame in sequence, two movable slide rails are symmetrically arranged on both sides of the sliding frame, two fixed slide rails are symmetrically arranged on both sides of the bracket, the movable slide rails and the fixed slide rails are fitted together to form a sliding pair, the inner slide plate is arranged in the brick cavity of the fixed frame, the outer slide plate is arranged in the brick cavity of the sliding frame, the inner slide plate and the outer slide plate are fitted together to form a sliding pair, the outer water nozzle is arranged on the outer side of the outer slide plate, and is fixed to the outer water nozzle seat by bolts and tighteners,

An air circuit E is vertically arranged on the inside of the surface pressure spring chamber of the bracket, and a surface pressure spring, a spring guide column, a spring pressure plate, a surface pressure bolt and a side wing guard plate are arranged in the surface pressure spring chamber. The surface pressure bolt passes through the side wing guard plate, the spring pressure plate and the surface pressure spring chamber in sequence and is connected with the fixing frame. An air circuit F with the same number as the surface pressure springs is arranged between the air circuit E and the surface pressure spring chamber, and an exhaust hole connected with the surface pressure spring chamber and corresponding to the air circuit F is arranged on the outer side surface of the bracket; the air intake bolt adopts M36-M39 fine thread, and the heavy air intake bolt (the bolt wall thickness is more than 8 mm) fixes the reinforcing pier more firmly in the drum-shaped groove of the connecting plate.

A cylinder driving device is provided in the middle of the upper part of the connecting plate, and two air intake devices are symmetrically provided on both sides of the connecting plate, the air intake device includes two air paths A and air intake bolts vertically arranged in the middle of the upper end surface of the connecting plate, a cold air inlet is provided at the upper end of the air path A, a threaded hole connected with the lower end of the air path A is horizontally provided in the middle and upper part of the connecting plate, the inner end of the air intake bolt is connected to the threaded hole, the through hole inside the air intake bolt is set as air path B, and a supporting platform is provided at the outer end of the air intake bolt; the outer end of the threaded hole is provided with a drum-shaped groove, a reinforcing pier with a drum-shaped cross section is fixedly installed in the drum-shaped groove, the reinforcing pier is mounted on the air intake bolt, and plays a role in strengthening and fixing the air intake bolt.

Two air-cooling sealing devices are symmetrically arranged on both sides of the upper end of the bracket, and the air-cooling sealing devices include a T-shaped air-cooling pipe, a sealing spring, an air duct seat and a drainage bolt; a waist-shaped air cavity is arranged inside the upper end of the bracket, and the inner side of the waist-shaped air cavity is connected with the air path E on the bracket, and an air-cooling seat is arranged on the inner side surface of the upper end of the bracket, and an assembly hole is arranged in the middle of the air-cooling seat, which passes through the bracket and the waist-shaped air cavity horizontally, and the air duct seat is fixed on the air-cooling seat by screws; a T-shaped through hole coaxially corresponding to the assembly hole is arranged in the air duct seat, and the T-shaped air-cooling pipe is matched and fitted in the T-shaped through hole and connected with the air inlet screw. The bolts are coaxially corresponding, and the through hole inside the T-shaped air-cooling tube is set as the air path C; and a retracted gap m is provided between the T-shaped air-cooling tube and the air duct seat, a spring groove is provided at the outer end of the T-shaped air-cooling tube, the sealing spring is sleeved in the assembly hole and the spring groove, the drainage bolt is threadedly connected in the assembly hole to press the sealing spring, the outer end face of the T-shaped air-cooling tube is pressed against the supporting platform of the air intake bolt, a blind hole is provided at the outer end of the drainage bolt, the blind hole is set as the air path D, and no less than 2 waist-shaped air holes located in the waist-shaped air cavity are evenly distributed on the side walls of the blind hole, and the preferred number of the waist-shaped air holes is 4.

A positioning boss is provided at the outer end of the assembly hole, and the T-shaped through hole of the duct seat is matched and inserted into the positioning boss, and the positioning boss improves the firmness of the connection between the duct seat and the air cooling seat; the side surface of the upper end of the T-shaped air cooling pipe is set as a sealing spherical surface matching the T-shaped through hole in the duct seat, and the step surface of the T-shaped air cooling pipe is set as a rotating spherical surface, and a rotating ball socket corresponding to the rotating spherical surface is provided at the corresponding position of the duct seat. The sealing spherical surface and the rotating spherical surface enable the air cooling pipe to move up and down along the duct seat during use, and can also swing slightly with the slag blocking mechanism, thereby improving the sealing of the air cooling pipe and the air intake bolt.

The hole diameter of the air intake bolt is 20-24mm, which is 4-8mm larger than the inner diameter of the T-shaped air cooling tube, and allows 2-4mm eccentricity between the T-shaped air cooling tube and the air intake bolt, which solves the eccentricity problem between the T-shaped air cooling tube and the air intake bolt caused by the position offset of the whole machine when the slag blocking mechanism is replaced online, and ensures the stability of the spring cooling air volume and the cooling effect of the spring.

The apertures of gas path A, gas path B, gas path C, the inner diameter of the sealing spring, and gas path D are all larger than the aperture of gas path E. The aperture of gas path E is 16mm, ensuring the smooth flow of cooling gas through the entire sealing pipeline.

After being tightened by the air intake bolt, the T-shaped air cooling tube retracts inward by 2-10mm, but the outer end of the T-shaped air cooling tube still extends out of the air duct seat by more than 3mm. Therefore, the air intake bolt is always sealed and connected to the air cooling tube, and the air cooling tube and the bracket are always connected with a sealing spring, which ensures the normal operation of the slag blocking mechanism.

The sealing spring is made of high-temperature resistant alloy steel. Its maximum compression amount is greater than the sum of the retraction gap m of the T-shaped air-cooling tube into the air duct seat and the length exposed on the outside of the air duct seat. After the T-shaped air-cooling tube is tightened by the air intake bolt, the pressure exerted by the sealing spring on the T-shaped air-cooling tube is 15-35kg, ensuring that the air-cooling tube is always pressed by the sealing spring.

A front baffle is provided at the upper end of the air duct seat, and a side baffle is provided on the outer side of the air-cooling sealing device. The side baffle and the front baffle form an L-shaped T-shaped air-cooling pipe protection ring to prevent foreign objects from falling from the side and top of the slag retaining mechanism during use and damaging the air-cooling pipe, thereby increasing the service life of the air-cooling pipe.

An anti-fall block is provided at the bottom of the fixed frame, which corresponds to the anti-fall blind plate under the bracket to prevent falling objects from above the converter from entering the slag stop mechanism during use, thereby improving the safety of the slag stop mechanism.

Hinge seats are provided at the four corners of the fixed frame, and hinge holes are provided at the upper and lower ends of the surface pressure spring chamber of the bracket and inside the air-cooled sealing device. The hinge hole and the hinge seat are hinged by a hinge pin, and a dustproof blind plate is provided at the end of the hinge hole inside the air-cooled sealing device. The dustproof blind plate is fixed in the hinge hole by a retaining spring, which improves the stability and safety of the opening and closing operation of the slag retaining mechanism.

The fixed frame and the sliding frame are respectively provided with an inner skateboard pressing device and an outer skateboard pressing device, and the inner skateboard is pressed into the inner skateboard brick cavity, and the outer skateboard is pressed into the outer skateboard brick cavity, which increases the service life of the skateboard and reduces the production cost.

The method and principle of use of the present invention are:

The first step is to separate the slag blocking mechanism from the cylinder drive device when replacing the slag blocking mechanism online, remove the used slag blocking mechanism from the connecting plate, place the new slag blocking mechanism on the outside of the connecting plate and force it to be close to the connecting plate; the second step is that at the moment when the slag blocking mechanism approaches the outer surface of the connecting plate, the air intake bolts on the connecting plate air intake device automatically support the air cooling pipe in the air cooling sealing device on both sides of the bracket and retract it, and under the pressure of the sealing spring, the air cooling pipe is automatically pressed against the supporting platform of the air intake bolt to achieve automatic sealing connection between the air cooling pipe and the air intake bolt; the third step is that after the slag blocking mechanism and the connecting plate are fixed with bolts, the air cooling pipe automatically adjusts its position and angle and always maintains close surface contact with the supporting platform at the outer end of the air intake bolt, automatically establishing cold air inlet → air path A → air path B → air path C → inner diameter of sealing spring → air path The fully sealed air-cooling pipeline of D→waist-shaped air hole→waist-shaped air cavity→air path E→air path F→face pressure spring→exhaust hole realizes the cooling of the sealing spring and each face pressure spring by the cooling gas; the fourth step, when tapping steel, the oil cylinder drive device drives the outer slide plate and the outer water outlet to reciprocate, so that the outer slide plate is in an open or closed state, completing the tapping and slag blocking operations at the tapping port; the fifth step, when the dismantled slag blocking mechanism is to be maintained offline, first unload the pressure on the slag blocking mechanism and open it, and then remove, clean, install and pressurize the slide plate. During the whole process, there is no need to inspect, maintain or replace spare parts for the air-cooling sealing device including the air-cooling pipe and the sealing spring; the sixth step, during regular inspection and maintenance, it is only necessary to open the diverter bolt, which greatly simplifies the offline maintenance process of the slag blocking mechanism and reduces the labor intensity of workers and the consumption of spare parts.

The above embodiments are only descriptions of the preferred implementation modes of the present invention. The described examples are only a part of the implementation examples of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

A bracket directly connected automatic air-cooled converter slide plate slag blocking device, comprising a connecting plate and a slag blocking mechanism installed on the outer side of the connecting plate, characterized in that:

A fixing frame is provided at the lower part of the outer side surface of the connecting plate, and the slag blocking mechanism is hinged to the fixing frame through the bracket, and an air path E is vertically provided inside the surface pressure spring chamber of the bracket, and an air path F having the same number as the surface pressure springs is provided between the air path E and the surface pressure spring chamber, and an exhaust hole communicating with the surface pressure spring chamber and corresponding to the air path F is provided on the outer side surface of the bracket;

Two air intake devices are symmetrically provided on both sides of the upper part of the connecting plate, and the air intake devices include two air paths A and air intake bolts vertically arranged in the middle of the upper end surface of the connecting plate. A cold air inlet is provided at the upper end of the air path A, and a threaded hole connected to the lower end of the air path A is horizontally provided in the middle and upper part of the connecting plate. The inner end of the air intake bolt is connected to the threaded hole, and the through hole inside the air intake bolt is set as air path B, and a supporting platform is provided at the outer end of the air intake bolt;

Two air-cooling sealing devices are symmetrically arranged on both sides of the upper end of the bracket, and the air-cooling sealing devices include a T-shaped air-cooling pipe, a sealing spring, an air duct seat and a drainage bolt; a waist-shaped air cavity is arranged inside the upper end of the bracket, and the inner side of the waist-shaped air cavity is connected with the air path E on the bracket, and an air-cooling seat is arranged on the inner side surface of the upper end of the bracket, and an assembly hole that passes through the bracket and the waist-shaped air cavity is arranged in the middle of the air-cooling seat, and the air duct seat is fixedly installed on the air-cooling seat by screws; a T-shaped through hole coaxially corresponding to the assembly hole is arranged in the air duct seat, and the T-shaped air-cooling pipe is matched and fitted in the T-shaped through hole The through hole inside the T-shaped air-cooling pipe is coaxially corresponding to the air intake bolt, and the through hole inside the T-shaped air-cooling pipe is set as the air path C; and a retracted gap m is provided between the T-shaped air-cooling pipe and the air duct seat, a spring groove is provided at the outer end of the T-shaped air-cooling pipe, and the sealing spring is sleeved in the assembly hole and the spring groove. The drainage bolt is threadedly connected in the assembly hole to press the sealing spring, and the outer end face of the T-shaped air-cooling pipe is pressed against the supporting platform of the air intake bolt, and a blind hole is provided at the outer end of the drainage bolt, and the blind hole is set as the air path D. The side walls of the blind hole are evenly distributed with no less than 2 waist-shaped air holes located in the waist-shaped air cavity.
According to claim 1, a bracket direct-connected automatic air-cooled converter slide plate slag blocking device is characterized in that: the outer end of the threaded hole is provided with a drum-shaped groove, and a reinforcing pier with a drum-shaped cross-section is fixedly installed in the drum-shaped groove, and the reinforcing pier is mounted on the air intake bolt to play a role of strengthening and fixing.
According to claim 1, a bracket direct-connected automatic air-cooled converter slide plate slag blocking device is characterized in that the hole diameter of the air intake bolt is 20-24mm, which is 4-8mm larger than the inner diameter of the T-shaped air-cooling pipe, and allows the T-shaped air-cooling pipe and the air intake bolt to have an eccentricity of 2-4mm.
According to claim 1, a bracket direct-connected automatic air-cooled converter slide plate slag blocking device is characterized in that the apertures of gas path A, gas path B, gas path C, sealing spring inner diameter, and gas path D are not less than the aperture of gas path E, and the aperture of gas path E is 16 mm.
According to claim 1, a bracket direct-connected automatic air-cooled converter slide plate slag blocking device is characterized in that: the T-shaped air-cooling pipe is tightened by the air intake bolt and retracts inward by 2-10 mm, but the outer end of the T-shaped air-cooling pipe still protrudes out of the air pipe seat by more than 3 mm.
According to claim 1, a bracket direct-connected automatic air-cooled converter slide slag blocking device is characterized in that: the sealing spring is made of high-temperature resistant alloy steel, and its maximum compression amount is greater than the sum of the retraction gap m of the T-shaped air-cooling pipe retracted into the air duct seat and the length of the T-shaped air-cooling pipe exposed from the air duct seat. After the T-shaped air-cooling pipe is tightened by the air intake bolt, the pressure exerted by the sealing spring on the T-shaped air-cooling pipe is 15-35kg.
According to claim 1, a bracket direct-connected automatic air-cooled converter slide plate slag blocking device is characterized in that a front baffle is provided at the upper end of the air duct seat, and a side baffle is provided on the outer side of the air-cooled sealing device, and the side baffle and the front baffle form an L-shaped T-shaped air-cooled pipe protection ring.
According to claim 1, a bracket directly connected automatic air-cooled converter slide plate slag blocking device is characterized in that: an anti-fall block is provided at the bottom of the fixed frame, and the anti-fall block corresponds to the position of the anti-fall blind plate under the bracket.
According to claim 1, a bracket directly connected automatic air-cooled converter slide plate slag blocking device is characterized in that: hinge seats are provided at the four corners of the fixed frame, hinge holes are provided at the upper and lower ends of the surface pressure spring chamber of the bracket and inside the air-cooled sealing device, the hinge hole and the hinge seat are hinged by a hinge pin, and a dust-proof blind plate is provided at the end of the hinge hole of the air-cooled sealing device, and the dust-proof blind plate is fixed in the hinge hole by a retaining spring.
According to claim 1, a bracket direct-connected automatic air-cooled converter slide plate slag blocking device is characterized in that: the side surface of the upper end of the T-shaped air-cooling pipe is set to a sealing spherical surface matching the T-shaped through hole in the air duct seat, and the step surface of the T-shaped air-cooling pipe is set to a rotating spherical surface, and the corresponding position of the air duct seat is provided with a rotating ball socket corresponding to the rotating spherical surface.