CN218372371U

CN218372371U - Sand seal

Info

Publication number: CN218372371U
Application number: CN202222838397.4U
Authority: CN
Inventors: 郑瑞鹏; 张芬燕; 刘涌; 张志浩; 李浩杰
Original assignee: Hebei Hongfa Mechanical Co ltd
Current assignee: Hongfa Heavy Industry Group Co.,Ltd.
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-01-24
Anticipated expiration: 2032-10-27

Abstract

The utility model discloses a sand seal relates to flue sealing technical field, including fixed flue, activity petticoat pipe remove install in the outer wall lower part of fixed flue, fixed flue is provided with the junction of activity petticoat pipe and is used for right fixed flue the sealed unit of activity petticoat pipe connection seal, sealed unit include fixed mounting in the division board on activity petticoat pipe inner wall top, the top fixed mounting of division board has the sand trap. The utility model discloses a set up sealed unit, when realizing that the movable petticoat pipe goes up and down, the movable petticoat pipe drives division board and sand groove and reciprocates, makes the grit carry out the displacement along the outer wall of picture peg, can separate the direct contact of most flame to the picture peg effectively through the division board, and the picture peg is pegged graft in the grit inside and is reciprocated to avoid flue gas and flame to spill the loss, reach sealed purpose, alleviateed the work load of clearance deposition and jam, need not gas supply system, reduce cost.

Description

Sand seal

Technical Field

The utility model relates to a flue seals technical field, specifically is sand seal.

Background

A converter vaporization flue, also called a waste heat boiler, is one of main supporting equipment for converter steelmaking, the equipment collects high-temperature flue gas to the maximum extent when working, bears the highest furnace gas temperature and severe and frequent temperature changes, simultaneously, the working condition is the worst, steel slag which is easy to adhere and splash is added, coke and the like are added into the steel slag in the furnace, oxygen is added into an oxygen-accelerating port, under the action of electrodes, the mixture of the steel slag and the like in the furnace is subjected to physical reaction, the steel slag is turned into molten steel, the temperature of the molten steel in the furnace is continuously and surly increased along with the time, the temperature of the high-temperature flue gas generated by the reaction is 1400-1600 ℃, the flue gas circulates in the vaporization flue under the negative pressure effect generated by a circulating pump, the steel slag which is not burnt by sparks enters a combustion chamber, the temperature in the flue is about 800 ℃, and the vaporization cooling flue consists of a movable smoke hood, a furnace port fixing section, a middle section and the tail end of the flue; the movable smoke hood is arranged above a furnace mouth of the converter and is generally of a pipeline partition plate type structure, the movable smoke hood needs to be lifted up and down freely, so that the air pressure inside and outside the smoke hood is ensured to be approximately equal, the outward escape of smoke is avoided to deteriorate the operation environment in front of the converter, too much air is not sucked, the quality of recovered coal gas is reduced, the required gap can be adjusted by the movable smoke hood at each stage of blowing, the steel is tapped after the blowing is finished, the slag is discharged, waste steel is added, and when molten iron is added, the smoke hood can be lifted up without influencing the tilting of the converter, and when the furnace lining needs to be replaced, the movable smoke hood can be moved horizontally to open the upper part of the furnace body.

The upper part of the movable smoke hood is a fixed section flue, and the movable flue and the fixed section flue are connected by a set of gas supply system for nitrogen sealing so as to achieve the purpose of sealing.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sand seal to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the sand seal comprises a fixed flue and a movable smoke hood, wherein the movable smoke hood is movably arranged at the lower part of the outer wall of the fixed flue, and a sealing unit for connecting and sealing the fixed flue and the movable smoke hood is arranged at the joint of the fixed flue and the movable smoke hood;

the sealing unit includes fixed mounting in the division board on activity petticoat pipe inner wall top, the top fixed mounting of division board has the sand groove, the inner wall fixed mounting of sand groove has the guide wheel seat, the inner wall of guide wheel seat rotates installs the gyro wheel, the outer wall fixed mounting of fixed flue have peg graft in the inside picture peg of sand groove, the inside packing of sand groove has the grit.

As a further aspect of the present invention: the guide wheel seat the gyro wheel is provided with a plurality of, a plurality of the guide wheel seat the gyro wheel equiangular distribution in the inner wall of sand groove, just the outer wall laminating of gyro wheel in the outer wall of fixed flue.

As a further aspect of the present invention: a stepped groove is formed in the top end of the movable smoke hood, and the partition plate is fixedly installed at the bottom end of the interior of the stepped groove through bolts.

As the utility model discloses further scheme again: the outer wall of sand groove with the inner wall phase-match in ladder groove, seted up the ring channel in the sand groove, the grit fill in inside the ring channel.

As a further aspect of the present invention: the fixed welding in top of picture peg has the annular slab, the inner wall of annular slab fixed weld in the outer wall of fixed flue, the bottom of picture peg is erected the cross-section and is V type structure.

As a further aspect of the present invention: the sand tank is formed by welding steel plates.

As a further aspect of the present invention: the guide wheel seat is fixedly installed on the inner wall of the sand tank through bolts, and the roller is rotatably installed at one end of the guide wheel seat through a rotating shaft and a bearing.

Compared with the prior art, the beneficial effects of the utility model are that: through setting up sealed unit, when realizing that the activity petticoat pipe goes up and down, the activity petticoat pipe drives division board and sand groove and reciprocates, makes the grit carry out the displacement along the outer wall of picture peg, can separate the direct contact of most flame to the picture peg effectively through the division board, and the picture peg is pegged graft and is reciprocated in the grit inside to avoid flue gas and flame to spill the loss, reach sealed purpose, alleviateed the work load of clearance deposition and jam, need not gas supply system, reduce cost.

Drawings

FIG. 1 is a schematic view of a sand seal;

FIG. 2 is a sectional view of the connection of the sand-sealed fixed flue and the movable smoke hood;

FIG. 3 is an enlarged view of the sand seal at A in FIG. 2;

fig. 4 is a schematic diagram of the explosion structure of the sand seal groove and the inserting plate.

In the figure: 1. fixing the flue; 2. a movable smoke hood; 3. a sealing unit; 301. a partition plate; 302. a sand tank; 303. inserting plates; 304. a guide wheel seat; 305. sand; 306. and a roller.

Detailed Description

Referring to fig. 1 to 4, in the embodiment of the present invention, the sand seal includes a fixed flue 1 and a movable smoke hood 2, the movable smoke hood 2 is movably installed at the lower portion of the outer wall of the fixed flue 1, and a sealing unit 3 for connecting and sealing the fixed flue 1 and the movable smoke hood 2 is disposed at the connection between the fixed flue 1 and the movable smoke hood 2;

the sealing unit 3 comprises a partition plate 301 fixedly mounted on the top end of the inner wall of the movable smoke hood 2, the partition plate 301 is made of double-layer aluminum plates, a sand groove 302 is fixedly mounted on the top end of the partition plate 301, a guide wheel seat 304 is fixedly mounted on the inner wall of the sand groove 302, rollers 306 are rotatably mounted on the inner wall of the guide wheel seat 304, an inserting plate 303 inserted into the sand groove 302 is fixedly mounted on the outer wall of the fixed smoke hood 1, sand 305 is filled in the sand groove 302, the sand 305 is made of quartz sand, the guide wheel seat 304 and the rollers 306 are provided with a plurality of guide wheel seats 304, the rollers 306 are distributed on the inner wall of the sand groove 302 in an equal angle mode, the outer wall of the rollers 306 is attached to the outer wall of the fixed smoke hood 1, the inserting plate 303 is of an annular structure, a ring-shaped plate is fixedly welded on the top end of the inserting plate 303, the inner wall of the ring-shaped plate is fixedly welded on the outer wall of the fixed smoke hood 1, the vertical cross section at the bottom end of the inserting plate 303 is of the V-shaped structure, the sand groove 302 is formed by welding steel plates, the guide wheel seat 304 is fixedly mounted on the inner wall of the sand groove 302 by bolts, and the rollers 306 is rotatably mounted on one end of the guide wheel seat 304 by a rotating shaft and a bearing.

According to the sand seal, when the movable smoke hood 2 is lifted, the movable smoke hood 2 drives the partition plate 301 and the sand groove 302 to move up and down, so that the sand 305 is displaced along the outer wall of the inserting plate 303, most of flame can be effectively prevented from directly contacting the inserting plate 303 through the partition plate 301, the sand 305 in the sand groove 302 can effectively prevent the leakage of the flue gas and the flame, and the guide wheel seat 304 is matched with the roller 306 to effectively control the gap between the movable smoke hood 2 and the fixed flue 1 when the movable smoke hood is lifted and lowered.

In fig. 3: the ladder groove has been seted up on the top of activity petticoat pipe 2, and division board 301 passes through bolt fixed mounting in the inside bottom in ladder groove, and the outer wall of sand groove 302 and the inner wall phase-match in ladder groove have seted up the ring channel in sand groove 302, and grit 305 is filled inside the ring channel.

This kind of sand seal, movable petticoat pipe 2 reciprocate and drive division board 301 and reciprocate, and when making sand groove 302 reciprocate, picture peg 303 pegs graft in sand 305 is inside and reciprocates to avoid flue gas and flame to spill the loss, reach sealed purpose.

The utility model discloses a theory of operation is: when using this kind of sand to seal, when going up and down through activity petticoat pipe 2, activity petticoat pipe 2 drives division board 301 and sand groove 302 and reciprocates, makes grit 305 carry out the displacement along the outer wall of picture peg 303, and picture peg 303 pegs graft in grit 305 inside and reciprocates to avoid flue gas and flame to spill the loss, reach sealed purpose.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The sand seal comprises a fixed flue (1) and a movable smoke hood (2), and is characterized in that a sealing unit (3) for connecting and sealing the fixed flue (1) and the movable smoke hood (2) is arranged at the joint of the fixed flue (1) and the movable smoke hood (2);

sealed unit (3) including fixed mounting in division board (301) on activity petticoat pipe (2) inner wall top, the top fixed mounting of division board (301) has sand box (302), the inner wall fixed mounting of sand box (302) has guide wheel seat (304), the inner wall of guide wheel seat (304) is rotated and is installed gyro wheel (306), the outer wall fixed mounting of fixed flue (1) has picture peg (303), the inside packing of sand box (302) has grit (305).

2. A sand seal according to claim 1, characterized in that the top end of the movable hood (2) is provided with a stepped groove, and the partition plate (301) is fixedly arranged at the inner bottom end of the stepped groove.

3. The sand seal according to claim 1, characterized in that an annular groove is arranged in the sand tank (302), and the sand (305) is filled in the annular groove.

4. The sand seal according to claim 1, wherein a ring-shaped plate is fixedly welded at the top end of the inserting plate (303), and the vertical section of the bottom end of the inserting plate (303) is of a V-shaped structure.

5. The sand seal of claim 1, wherein the guide wheel base (304) is fixedly mounted to an inner wall of the sand tank (302), and the roller (306) is rotatably mounted to an end of the guide wheel base (304).