CN212669734U

CN212669734U - Sealing structure of dust removing device of blast furnace camera

Info

Publication number: CN212669734U
Application number: CN202021176945.6U
Authority: CN
Inventors: 吴张龙
Original assignee: Changzhou Yuantai Electronic Co ltd
Current assignee: Changzhou Yuantai Electronic Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-03-09
Anticipated expiration: 2030-06-22

Abstract

The utility model relates to a seal structure of blast furnace appearance ash removal device of making a video recording belongs to blast furnace imaging equipment's field, this seal structure sets up on the appearance body of making a video recording, be provided with ash removal device on the appearance body of making a video recording, ash removal device includes ring flange and pivot, the ring flange is fixed to be set up on the appearance body of making a video recording, the connecting hole has been seted up on the ring flange, the pivot is inserted and is set up at the connecting hole, be formed with annular sealed chamber between the inner wall of pivot and connecting hole, be provided with the sealing member that seals up between pivot and the. The utility model provides a harmful gas in the blast furnace leaks out from the junction between ring flange and the pivot easily, causes the problem of production harm, can be sealed completely between ash removal device and the blast furnace inside, guarantees the holistic leakproofness of blast furnace, makes its inside harmful gas be difficult for leaking the outside air from the connecting hole, improves the security of production.

Description

Sealing structure of dust removing device of blast furnace camera

Technical Field

The application relates to the technical field of blast furnace imaging equipment, in particular to a sealing structure of a dust removing device of a blast furnace camera.

Background

At present, various furnaces are often used in the industrial production field, for example, shaft furnaces such as blast furnaces and other furnaces are used in the metallurgical industry. In order to obtain the basis for guiding the operation, the distribution of the material distribution and the gas flow in the blast furnace and the operation condition of the material distributor are observed by installing a camera in the blast furnace. In the use, the dust in the blast furnace is piled up in the camera lens department of stove appearance of making a video recording easily, causes the shielding to the camera lens of camera, leads to the stove appearance of making a video recording and can't normally work.

Chinese application No. CN203807497U discloses an automatic ash removing device for in-furnace imaging. Including the outer rifle body, the scraper blade, the apparatus further comprises a rotating shaft, drive pivot pivoted cylinder, the fixed ring flange that is provided with on the global of the outer rifle body, this ring flange is used for installing blast furnace camera on the blast furnace oven, the pivot extends the setting along outer rifle body length direction, the pivot pass the ring flange and with the ring flange between rotate be connected, the cylinder passes through the connecting rod and is connected with the one end of pivot, the other end of pivot is fixed with the scraper blade, the outer mouth of sweeping of the corresponding outer rifle body front end of scraper blade, through the swing of scraper blade, can effectual clearance sweep the dust of mouthful department outward, the effect of making a video recording is improved.

The above prior art solutions have the following drawbacks: when the staff passes through the ring flange and installs this blast furnace appearance of making a video recording on the blast furnace oven, be difficult for sealing the inside of ash removal device and blast furnace completely cut off for harmful gas in the blast furnace leaks out from the junction between ring flange and the pivot easily, causes the production harm.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a seal structure of appearance ash removal device is made a video recording to blast furnace to the not enough that prior art exists, the purpose of this application can be sealed completely cut off between ash removal device and the blast furnace inside, makes the harmful gas in the blast furnace be difficult for leaking the effect of external environment, the security of improvement production.

The above application purpose of the present application is achieved by the following technical solutions: the utility model provides a seal structure of blast furnace appearance ash removal device of making a video recording, this seal structure sets up on the appearance body of making a video recording, be provided with ash removal device on the appearance body of making a video recording, ash removal device includes ring flange and pivot, the ring flange is fixed to be set up on the appearance body of making a video recording, the connecting hole has been seted up on the ring flange, the pivot is inserted and is set up at the connecting hole, be formed with annular sealed chamber between the inner wall of pivot and connecting hole, sealed intracavity is provided with and carries out sealed sealing member between pivot and the connecting hole.

Through adopting above-mentioned technical scheme, when the staff will make a video recording the appearance body through the ring flange and install on the blast furnace oven, toxic gases such as coal gas in the blast furnace leaked out from the connecting hole easily, so set up the sealing member in pivot and connecting hole, can be used for sealing the ash removal device completely with blast furnace inside, guarantee the holistic leakproofness of blast furnace, make its inside harmful gas be difficult for leaking outside air from the connecting hole, improve the production security.

The present application may be further configured in a preferred example to: the utility model discloses a sealing device for sealing a flange, including the flange dish, the side fixedly connected with bottom plate of flange dish, the bottom plate is laminated with the side of flange dish mutually, the pivot pass the bottom plate and with rotate between the bottom plate and be connected, the sealing member includes flexible sealing filler, flexible sealing filler fills in sealed intracavity, the one side that the bottom plate was kept away from to the flange dish is provided with the piece that compresses tightly that is used for compressing tightly flexible sealing filler, compress tightly a piece and include go-between and gland, the fixed one side of keeping away from the bottom plate at the flange dish that sets up of go-between, go-between and connecting hole coaxial line, the internal diameter of go-between is.

Through adopting above-mentioned technical scheme, pack the sealed intracavity with flexible sealing filler, compress tightly flexible sealing material through compressing tightly the piece for contact between flexible sealing material and the pivot is inseparabler, thereby improves flexible sealing material's sealed effect. When the pressing piece presses the flexible sealing material, the bottom plate can limit the movement of the flexible sealing material, so that the flexible sealing material is not easily extruded out of the cavity by the pressing piece.

The present application may be further configured in a preferred example to: the flexible sealing packing is arranged between the gland and the bottom plate, the flexible sealing packing comprises a primary sealing packing and a secondary sealing packing, the primary sealing packing and the secondary sealing packing are both arranged in the sealing cavity, the side face, away from the secondary sealing packing, of the primary sealing packing is attached to the bottom plate, the sealing element further comprises a support ring, the support ring is arranged between the primary sealing packing and the secondary sealing packing, and a gap exists between the inner wall of the support ring and the rotating shaft.

By adopting the technical scheme, the sealing cavity is filled with multiple layers of flexible sealing fillers, so that the sealing effect is further improved; because extrude flexible sealing filler through compressing tightly the piece, improve sealed effect, lead to the frictional force increase between flexible sealing filler and the pivot easily for pivot pivoted resistance grow, the event sets up the support ring in sealed intracavity, has the clearance between pivot and the support ring, helps the rotation of pivot.

The present application may be further configured in a preferred example to: the gland is located the link ring and both threaded connection, the terminal surface that the gland is close to the ring flange laminates with second grade sealing packing mutually, the fixed knob that is provided with of terminal surface that the ring flange was kept away from to the gland, the pivot passes gland and knob in proper order and rotates with gland and knob to be connected.

Through adopting above-mentioned technical scheme, the staff screws the knob, drives the gland and rotates, and threaded connection between gland and the go-between for the gland removes to the direction that is close to second grade sealing filler, and flexible sealing filler receives the effect of axial pressure, produces plastic deformation, thereby flexible sealing filler is along radial expansion, and then makes the outer peripheral face of the inner wall of flexible sealing material and connecting hole and pivot closely laminate, improves sealed effect.

The present application may be further configured in a preferred example to: the gland is located the link ring and both sliding connection, the terminal surface that the gland is close to the ring flange is laminated with second grade seal packing mutually, the terminal surface fixedly connected with connecting plate of ring flange is kept away from to the gland, the pivot pass gland and connecting plate and with gland and connecting plate between rotate be connected, the mounting hole has been seted up on the connecting plate, the downthehole joint stub that inserts is provided with of mounting hole, the one end and the ring flange of joint stub are connected, the other end threaded connection of joint stub has lock nut.

By adopting the technical scheme, the connecting short column is used for connecting the connecting plate and the flange plate, the press cover is placed in the connecting ring by a worker, the locking nut is screwed, the press cover moves towards the direction close to the secondary sealing filler due to the sliding connection between the press cover and the connecting ring, the flexible sealing filler is subjected to the action of axial compression force to generate plastic deformation, and the flexible sealing filler expands along the radial direction, so that the flexible sealing material is tightly attached to the inner wall of the connecting hole and the outer peripheral surface of the rotating shaft, and the sealing effect is realized.

The present application may be further configured in a preferred example to: the flange plate is provided with a blind hole on one side close to the connecting plate, and one end of the connecting short column close to the flange plate is in threaded connection in the blind hole.

Through adopting above-mentioned technical scheme, coupling stub threaded connection realizes dismantling between coupling stub and the ring flange and is connected in the blind hole, has improved the convenience that the staff compresses tightly the piece in the installation, also is convenient for to the reuse of coupling stub.

The present application may be further configured in a preferred example to: and a compression spring is arranged between the locking nut and the connecting plate, the compression spring is sleeved on the short connecting column, one end of the compression spring is abutted against the connecting plate, the other end of the compression spring is abutted against a gasket, and the gasket is attached to the locking nut.

Through adopting above-mentioned technical scheme, along with the continuous rotation of pivot, flexible sealing filler can appear wearing and tearing, leads to the clearance between flexible sealing filler and the pivot to increase gradually, and general flexible sealing filler does not have the ability of automatic compensation packing force, needs the frequent lock nut of screwing up of staff. Therefore, the compression spring is sleeved on the short connecting column, and when the gap between the flexible sealing packing and the rotating shaft is increased, the compression spring can apply compensation pressing force on the gland, so that the sealing performance is improved, and the labor capacity of workers is reduced.

The present application may be further configured in a preferred example to: the flexible sealing packing is made of polytetrafluoroethylene.

By adopting the technical scheme, because the working environment of the sealing structure is in the high-temperature environment of the blast furnace, the polytetrafluoroethylene has good thermal stability and can normally work within the temperature range of-200 ℃ to 300 ℃, and the surface of the polytetrafluoroethylene material has good self-lubricating property, thereby facilitating the rotation of the rotating shaft.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the sealing element, the ash removing device and the interior of the blast furnace can be sealed and isolated, so that harmful gas in the blast furnace is not easy to leak to the external environment, and the production safety is improved;

2. compress tightly the piece through setting up, exert pressure to the sealing member for the sealing member laminates with the pivot more, reduces the possibility of gas leakage, further improves the sealed effect of sealing member.

Drawings

Fig. 1 is a schematic overall structure diagram of a sealing structure of a dust removing device of a blast furnace camera according to an embodiment.

Fig. 2 is a sectional view of an internal structure for embodying a seal structure of the embodiment.

Fig. 3 is a schematic view of the overall structure of a sealing structure of a dust removing device of a blast furnace camera according to a second embodiment.

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

Fig. 5 is a cross-sectional view of an internal structure of the embodiment for embodying a sealing structure.

In the figure, 1, a camera body; 2. a dust removal device; 21. a rotating shaft; 22. a flange plate; 221. connecting holes; 222. sealing the cavity; 223. a base plate; 224. blind holes; 23. a squeegee; 24. a drive assembly; 3. a seal member; 31. a flexible sealing packing; 311. primary sealing filler; 321. secondary sealing filler; 32. a support ring; 4. a compression member; 41. a connecting ring; 42. a gland; 421. a knob; 43. a connecting plate; 431. mounting holes; 432. a short connecting column; 433. locking the nut; 434. a compression spring; 435. a gasket; 5. and (5) sealing the structure.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Example one

Referring to fig. 1, for the sealing structure of a blast furnace video camera ash removal device disclosed in this application, this sealing structure 5 sets up on video camera body 1, be provided with ash removal device 2 on video camera body 1, ash removal device 2 includes flange plate 22, pivot 21 and drive pivot 21 pivoted drive assembly 24, the one end and the drive assembly 24 of pivot 21 are connected, drive assembly 24's one end fixedly connected with scraper blade 23 is kept away from to pivot 21, flange plate 22 is fixed to be set up on video camera body 1, a side fixedly connected with bottom plate 223 of flange plate 22, bottom plate 223 laminates mutually with the one side that flange plate 22 is close to scraper blade 23, pivot 21 passes bottom plate 223 and flange plate 22 in proper order and rotates between flange plate 22 and the bottom plate 223 and be connected.

Referring to fig. 2, the flange 22 is provided with a connection hole 221, the rotation shaft 21 is inserted into the connection hole 221, an annular sealing cavity 222 is formed between the rotation shaft 21 and the inner wall of the connection hole 221, and a sealing member 3 for sealing between the rotation shaft 21 and the connection hole 221 is disposed in the sealing cavity 222. The sealing element 3 comprises a flexible sealing packing 31 and a support ring 32 which are made of polytetrafluoroethylene materials, the flexible sealing packing 31 comprises a primary sealing packing 311 and a secondary sealing packing 321, the support ring 32 is arranged between the primary sealing packing 311 and the secondary sealing packing 321, the primary sealing packing 311, the secondary sealing packing 321 and the support ring 32 are all located in the sealing cavity 222, and one surface, far away from the secondary sealing packing 321, of the primary sealing packing 311 is attached to the bottom plate 223.

Referring to fig. 2, a pressing member 4 for pressing the flexible sealing packing 31 is disposed on one side surface of the flange 22, the pressing member 4 includes a connection ring 41 and a pressing cover 42, the connection ring 41 is fixedly connected to the flange 22, the connection ring 41 and the connection hole 221 are coaxial, the inner diameter of the connection ring 41 is the same as the outer diameter of the connection hole 221, the pressing cover 42 is disposed in the connection ring 41, the pressing cover 42 and the connection hole are in threaded connection, the end surface of the pressing cover 42 close to the flange 22 is attached to the secondary sealing packing 321, the end surface of the pressing cover 42 far from the flange 22 is fixedly provided with a knob 421, the rotating shaft 21 sequentially penetrates through the pressing cover 42 and the.

The implementation principle of the embodiment is as follows: when the worker mounts the camera body 1 to the wall of the blast furnace through the flange 22, toxic gas such as gas in the blast furnace is easily leaked from the connection hole 221. At this time, the worker sequentially fills the primary seal packing 311, the support ring 32, and the secondary seal packing 321 into the seal cavity 222 to seal between the rotating shaft 21 and the flange 22. In order to further improve the sealing effect of the sealing element 3, a worker installs the gland 42 in the connecting ring 41, and rotates the knob 421 to drive the gland 42 to rotate, and the gland 42 and the connecting ring 41 are connected by threads, so that the gland 42 moves towards the direction close to the secondary sealing packing 321 to apply pressing force to the flexible sealing packing 31, and thus the flexible sealing packing 31 deforms in the sealing cavity 222, and further the flexible sealing packing 31 is more closely attached to the outer peripheral surface of the rotating shaft 21 and the inner wall of the connecting hole 221, and the sealing effect is improved. Due to the close fit of the flexible sealing packing 31 and the rotating shaft 21, the rotating shaft 21 is difficult to rotate, and a gap exists between the inner wall of the support ring 32 and the rotating shaft, so that the resistance to the rotation of the rotating shaft 21 is reduced.

Example two

Referring to fig. 3 and 4, the difference from the first embodiment is that the gland 42 is located in the connection ring 41 and the two are slidably connected. The end surface of the gland 42 far away from the flange plate 22 is fixedly connected with a connecting plate 43, and the rotating shaft 21 penetrates through the gland 42 and the connecting plate 43 and is rotatably connected with the gland 42 and the connecting plate 43.

Referring to fig. 4 and 5, in this embodiment, two mounting holes 431 are formed in the connecting plate 43, the two mounting holes 431 are respectively located on two sides of the length direction of the rotating shaft 21, a short connecting column 432 is inserted into the mounting holes 431, two blind holes 224 are formed in one surface, close to the short connecting column 432, of the flange plate 22, one end of the short connecting column 432 is connected in the blind holes 224 in a threaded manner, the other end of the short connecting column 432 is connected with a locking nut 433 in a threaded manner, a gasket 435 is attached to one surface, close to the connecting plate 43, of the locking nut 433, and the gasket 435. A compression spring 434 is arranged between the gasket 435 and the connecting plate 43, the compression spring 434 is sleeved on the connecting short column 432, and two ends of the compression spring 434 are respectively abutted against the connecting plate 43 and the gasket 435. When sealing is performed, the end face of the gland 42 close to the flange 22 and the secondary sealing packing 321 are pressed against each other.

The implementation principle of the embodiment is as follows: when the worker performs the sealing operation, the first-stage packing 311, the support ring 32, and the second-stage packing 321 are sequentially filled in the seal cavity 222. The operator then threads the connector post 432 onto the flange 22, places the gland 42 in the connector ring 41 and inserts the connector post 432 through the mounting hole 431 in the web 43. Then, the worker sequentially sleeves the compression spring 434 and the gasket 435 on the connecting short column 432, and screws the lock nut 433, so that the gland 42 continuously moves towards the direction close to the flange plate 22, and the flexible sealing packing 31 is subjected to the axial compression force of the gland 42 to generate plastic deformation, so that the flexible sealing packing 31 expands along the radial direction, and further, the flexible sealing material is tightly attached to the inner wall of the connecting hole 221 and the outer peripheral surface of the rotating shaft 21, and the sealing effect is improved. The compression spring 434 can apply a compensating compression force to the gland 42 to ensure the sealing performance, and when the sealing element 3 is worn, a worker does not need to frequently tighten the locking nut 433.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a seal structure of appearance ash removal device is made a video recording to blast furnace, this seal structure (5) set up on appearance body (1) makes a video recording, it is provided with ash removal device (2) on appearance body (1) to make a video recording, ash removal device (2) are including ring flange (22) and pivot (21), ring flange (22) are fixed to be set up on appearance body (1) makes a video recording, its characterized in that: the sealing device is characterized in that the flange plate (22) is provided with a connecting hole (221), the rotating shaft (21) is inserted into the connecting hole (221), an annular sealing cavity (222) is formed between the rotating shaft (21) and the inner wall of the connecting hole (221), and a sealing element (3) for sealing between the rotating shaft (21) and the connecting hole (221) is arranged in the sealing cavity (222).

2. The sealing structure of the ash removal device of the blast furnace camera according to claim 1, characterized in that: a bottom plate (223) is fixedly connected with one side surface of the flange plate (22), the bottom plate (223) is jointed with the side surface of the flange plate (22), the rotating shaft (21) penetrates through the bottom plate (223) and is rotatably connected with the bottom plate (223), the sealing element (3) comprises a flexible sealing filler (31), the flexible sealing filler (31) is filled in a sealing cavity (222), one side of the flange plate (22) far away from the bottom plate (223) is provided with a pressing piece (4) used for pressing the flexible sealing packing (31), the pressing piece (4) comprises a connecting ring (41) and a gland (42), the connecting ring (41) is fixedly arranged on one surface of the flange plate (22) far away from the bottom plate (223), the connecting ring (41) and the connecting hole (221) are coaxial, the inner diameter of the connecting ring (41) is the same as the outer diameter of the connecting hole (221), the gland (42) is positioned in the connecting ring (41) and is detachably connected with the connecting ring.

3. The sealing structure of the ash removal device of the blast furnace camera according to claim 2, characterized in that: the flexible sealing packing (31) is located between a gland (42) and a base plate (223), the flexible sealing packing (31) comprises a first-stage sealing packing (311) and a second-stage sealing packing (321), the first-stage sealing packing (311) and the second-stage sealing packing (321) are both located in a sealing cavity (222), the side face, far away from the second-stage sealing packing (321), of the first-stage sealing packing (311) is attached to the base plate (223), the sealing element (3) further comprises a support ring (32), the support ring (32) is arranged between the first-stage sealing packing (311) and the second-stage sealing packing (321), and a gap exists between the inner wall of the support ring (32) and a rotating shaft.

4. The sealing structure of the ash removal device of the blast furnace camera according to claim 3, characterized in that: gland (42) are located go-between (41) and both threaded connection, gland (42) are close to the terminal surface and the laminating of second grade sealing filler (321) of ring flange (22) mutually, gland (42) are kept away from the terminal surface fixed knob (421) that is provided with of ring flange (22), pivot (21) pass gland (42) and knob (421) in proper order and rotate with gland (42) and knob (421) and be connected.

5. The sealing structure of the ash removal device of the blast furnace camera according to claim 3, characterized in that: gland (42) are located go-between (41) and both sliding connection, gland (42) are close to the terminal surface and the laminating of second grade sealing packing (321) of ring flange (22) mutually, the terminal surface fixedly connected with connecting plate (43) of ring flange (22) are kept away from in gland (42), pivot (21) pass gland (42) and connecting plate (43) and with gland (42) and connecting plate (43) between rotate and be connected, mounting hole (431) have been seted up on connecting plate (43), it is provided with coupling post (432) to insert in mounting hole (431), the one end and the ring flange (22) of coupling post (432) are connected, the other end threaded connection of coupling post (432) has lock nut (433).

6. The sealing structure of the ash removal device of the blast furnace camera according to claim 5, characterized in that: a blind hole (224) is formed in one surface, close to the connecting plate (43), of the flange plate (22), and one end, close to the flange plate (22), of the connecting short column (432) is connected in the blind hole (224) in a threaded mode.

7. The sealing structure of the ash removal device of the blast furnace camera according to claim 5, characterized in that: be provided with pressure spring (434) between lock nut (433) and connecting plate (43), pressure spring (434) cover is established on coupling short column (432), the one end and connecting plate (43) looks butt of pressure spring (434), the other end butt of pressure spring (434) has gasket (435), gasket (435) and lock nut (433) are laminated mutually.

8. The sealing structure of the ash removal device of the blast furnace camera according to claim 2, characterized in that: the flexible sealing packing (31) is made of polytetrafluoroethylene.