CN220871445U

CN220871445U - Movable furnace cover for open furnace

Info

Publication number: CN220871445U
Application number: CN202321844103.7U
Authority: CN
Inventors: 张亚东; 郭键柄; 卢超; 王春
Original assignee: Lanzhou Engineering and Research Institute of Nonferrous Metallurgy Co Ltd
Current assignee: Lanzhou Engineering and Research Institute of Nonferrous Metallurgy Co Ltd
Priority date: 2023-07-13
Filing date: 2023-07-13
Publication date: 2024-04-30
Anticipated expiration: 2033-07-13

Abstract

The utility model discloses a movable furnace cover for an open furnace, belongs to the field of metallurgical equipment, and solves the problems of high air leakage rate and inconvenience in placement of the existing furnace cover. The utility model consists of a plurality of furnace cover units, which are respectively a first end cover, a second end cover and an intermediate cover connected between the first end cover and the second end cover, wherein the diameters of the first end cover, the intermediate cover and the second end cover are sequentially reduced, and the first end cover, the intermediate cover and the second end cover are sequentially connected from right to left by adopting sleeve type; rectangular sand seal grooves are formed along the upper end of the furnace wall of the open furnace, and the bottoms of the first end cover, the middle cover and the second end cover are buried in the sand seal grooves; the end walls at two ends of the open furnace are provided with connecting boxes, the connecting boxes are provided with inlet pipes and outlet pipes, the outer ends of the first end cover and the second end cover are closed and provided with flue gas pipelines, and the flue gas pipelines are movably inserted into the inlet pipes at the corresponding sides. The utility model has good sealing effect, and when the furnace cover is opened, the furnace cover units are nested layer by layer, so that the furnace cover is not required to be taken down integrally.

Description

Movable furnace cover for open furnace

Technical Field

The utility model belongs to the field of metallurgical equipment, and particularly relates to a movable furnace cover for an open furnace.

Background

In recent years, with the large-scale application of new energy batteries, the productivity of graphite cathode materials and silicon carbide is gradually increased year by year, and resistance furnaces, mainly Acheson furnaces and box furnaces, are widely used for graphitizing the graphite cathode materials and producing the silicon carbide.

However, both the Acheson furnace and the box furnace are open type furnaces, and a large amount of flue gas (dust, SO ₂ and NOx) cannot be collected in an organized manner in the graphitization process and the silicon carbide production process, SO that the environment is seriously polluted, and the physical and psychological health of operators is influenced. Under the environmental protection pressure, some enterprises set up the furnace body in indoor, set up the gas collection cover of roughness formula at the furnace body top. The collecting cover is not only required to be provided with an independent temporary storage area of the collecting cover, but also has poor sealing effect and high air leakage rate, and a large amount of flue gas is scattered in a factory building, so that all harmful gases in an operating field are seriously out of standard. Enterprises are often required to reduce the influence by increasing the air intake of the air intake fan. Overall, the existing rough flue gas collection mode has high capital investment and poor flue gas collection effect, and further increases the production cost of unit products.

Disclosure of utility model

The utility model aims to provide a movable furnace cover for an open furnace, which aims to solve the problems of high air leakage rate and inconvenient placement of the existing furnace cover.

The technical scheme of the utility model is as follows: the movable furnace cover comprises a plurality of furnace cover units, namely a first end cover, a second end cover and one or more middle covers connected between the first end cover and the second end cover, wherein the diameters of the first end cover, the middle cover and the second end cover are sequentially reduced, and the first end cover, the middle cover and the second end cover are sequentially connected from right to left by sleeves; rectangular sand seal grooves are formed along the upper end of the furnace wall of the open furnace, and the bottoms of the first end cover, the middle cover and the second end cover are buried in the sand seal grooves; the end walls at two ends of the open furnace are provided with connecting boxes, the connecting boxes are provided with inlet pipes and outlet pipes, the outer ends of the first end cover and the second end cover are closed ends, the ends are provided with flue gas pipelines, and the flue gas pipelines are movably inserted into the inlet pipes at the corresponding sides.

As a further improvement of the utility model, the left ends of the first end cover and the middle cover are respectively provided with a driving baffle, and the lower ends of the driving baffles are contacted with the furnace cover units on the left side; the right ends of the middle cover and the second end cover are respectively provided with a sealing baffle plate, and the sealing baffles are positioned between two adjacent furnace cover units.

As a further improvement of the utility model, a sealing strip is arranged in the sealing baffle plate.

As a further improvement of the utility model, the end of the flue gas pipeline is provided with an elastic sealing ring.

As a further improvement of the utility model, a sealing plugboard is arranged between the first end cover, the second end cover and the sand seal groove at the corresponding end.

As a further improvement of the utility model, the side part of the outer end of the first end cover or/and the second end cover is/are provided with a mounting seat, and the mounting seat is provided with a driving mechanism.

As a further improvement of the utility model, the driving mechanism comprises a motor and a speed reducer which are connected, the output end of the speed reducer is provided with a gear, the side part of the sand seal groove is provided with a running track, the running track is provided with a rack, and the rack is meshed with the gear.

As a further improvement of the utility model, the rack is located on the lower surface of the running rail.

As a further improvement of the utility model, two ends of the running rail are provided with limiting plates.

The beneficial effects of the utility model are as follows:

1. The movable type furnace cover adopts a sleeve type connection structure of a plurality of furnace cover units, when the furnace cover is required to be opened, the furnace cover units on one side are sequentially pushed to the other side, the furnace cover units are nested layer by layer, the furnace cover can be opened for relevant operation, the furnace cover is not required to be taken down integrally, and a separate temporary storage area of the collecting cover is not required to be arranged. The bottom of the furnace cover is buried in the sand seal groove, so that the sealing between the furnace cover and the furnace wall is realized, and the movement of the furnace cover unit is not influenced.

2. According to the utility model, the structures such as the driving baffle plate, the sealing baffle plate and the like are arranged on the furnace cover units, and the sealing baffle plate can improve the sealing performance between adjacent furnace cover units; in addition, in the moving process of the furnace cover unit, the furnace cover unit can be driven to move sequentially through the mutual contact between the driving baffle plate and the sealing baffle plate, and manual interference is not needed.

3. According to the utility model, the driving mechanism is arranged on the first end cover or/and the second end cover, and the driving mechanism is matched with the running track in a gear-rack transmission mode, so that the mechanical driving can be realized by opening and closing the furnace cover, and the device is convenient and labor-saving.

Drawings

FIG. 1 is a schematic diagram of the axial structure of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a view A-A of FIG. 2;

FIG. 4 is an enlarged view of section I of FIG. 3;

FIG. 5 is a view B-B in FIG. 2;

FIG. 6 is an enlarged view of section II of FIG. 5;

Fig. 7 is an enlarged view of the portion iii in fig. 5.

In the figure: 1-a first end shield; 2-a furnace wall; 3-an intermediate cover; 4-a second end shield; 5-connecting box; 51-an inlet pipe; 52-an outlet tube; 6-sand sealing the groove; 7-a driving mechanism; 71-an electric motor; 72-a speed reducer; 73-gear; 8-running track; 9-limiting plates; 10-end walls; 11-sealing insert plates; 12-flue gas pipeline; 13-driving a baffle; 14-sealing baffle; 15-sealing strips; 16-an elastic sealing ring; 17-rack; 18-mounting base.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 7, a movable hood for an open-type furnace, the movable hood being composed of a plurality of hood units, respectively a first end hood 1, a second end hood 4, and one or more intermediate hoods 3 connected between the first end hood 1 and the second end hood 4, the diameters of the first end hood 1, the intermediate hoods 3, the second end hood 4 being sequentially reduced, the first end hood 1, the intermediate hoods 3, and the second end hood 4 being sequentially connected in a sleeve manner from right to left; a rectangular sand seal groove 6 is arranged along the upper end of the furnace wall 2 of the open furnace, and the bottoms of the first end cover 1, the middle cover 3 and the second end cover 4 are buried in the sand seal groove 6; the end walls 10 at the two ends of the open furnace are provided with a connecting box 5, the connecting box 5 is provided with an inlet pipe 51 and an outlet pipe 52, the outer ends of the first end cover 1 and the second end cover 4 are closed ends, the ends are provided with flue gas pipelines 12, and the flue gas pipelines 12 are movably inserted into the inlet pipes 51 at the corresponding sides.

The left ends of the first end cover 1 and the middle cover 3 are respectively provided with a driving baffle 13, and the lower ends of the driving baffles 13 are contacted with a furnace cover unit on the left side; the right ends of the intermediate hood 3 and the second end hood 4 are both provided with a sealing baffle 14, the sealing baffle 14 being located between two adjacent hood units.

A sealing strip 15 is arranged in the sealing baffle 14. The sealing strip 15 is sealed between two adjacent furnace mantle units.

The end of the flue gas duct 12 is provided with a plurality of elastic sealing rings 16. When the flue gas duct 12 is inserted into the inlet pipe 51, the elastic sealing ring 16 is sealed between the flue gas duct 12 and the flue gas duct 12.

And a sealing plugboard 11 is arranged between the first end cover 1, the second end cover 4 and the sand seal groove 6 at the corresponding end.

The side parts of the outer ends of the first end cover 1 and/or the second end cover 4 are provided with mounting seats 18, and the mounting seats 18 are provided with driving mechanisms 7.

The driving mechanism 7 comprises a motor 71 and a speed reducer 72 which are connected, a gear 73 is arranged at the output end of the speed reducer 72, a running rail 8 is arranged at the side part of the sand seal groove 6, a rack 17 is arranged on the running rail 8, and the rack 17 is meshed with the gear 73.

The rack 17 is located the orbit 8 lower surface, prevents that smoke and dust from depositing on rack 17, extension equipment life.

Limiting plates 9 are arranged at two ends of the running rail 8. The limiting plate 9 limits the movement of the driving mechanism 7 to limit the travel of the first and second end caps 1, 4.

The number of the middle covers 3 can be flexibly set according to the needs, and the application range is wide.

The bottoms of the furnace cover units are buried in the sand seal groove 6 to realize bottom sealing. Sealing is realized among the furnace cover units through sealing strips 15 on the sealing baffle plates. The first end cover 1 and the second end cover 4 are sealed with the end of the sand seal groove 6 through the sealing plugboard 11. The flue gas duct 12 and the inlet pipe 51 are sealed by an elastic sealing ring 16. The utility model greatly reduces the air leakage rate through the measures. The air leakage rate is reduced, and meanwhile, the investment cost of related flue gas purification facility equipment is reduced, so that the construction investment and the production cost can be reduced.

When the open furnace performs production operation, flue gas enters the connecting box 5 through the flue gas pipeline 12 and the inlet pipe 51, and is discharged through the outlet pipe 52. The driving mechanism 7 on the first end cover 1 or the second end cover 4 can be optionally opened to realize the opening or closing of the furnace cover.

1. The operation of driving the first end shield 1 is as follows:

When the furnace hood is opened, the driving mechanism 7 on the first end hood 1 is opened, the motor 71 and the speed reducer 72 drive the gear 73 to rotate, the gear 73 and the rack 17 are meshed for transmission, the first end hood 1 moves leftwards, and as the diameters of other furnace hood units are smaller than those of the first end hood 1 and the right end of the first end hood 1 is a closed end, the closed end of the first end hood 1 sequentially pushes the middle hoods 3 to move leftwards from right to left until the first end hood 1 and the middle hoods 3 are all sleeved on the second end hood 4.

When the furnace cover is closed, the driving mechanism 7 on the first end cover 1 drives the first end cover 1 to move rightwards, the driving baffle 13 at the left end of the first end cover 1 abuts against the sealing baffle 14 at the right end of the middle cover 3 at the left side of the first end cover 1, and the middle cover 3 is pulled to move rightwards, so that the middle cover 3 at the left side is pulled to move rightwards in turn until the flue gas pipeline 12 at the right end of the first end cover 1 is inserted into the corresponding inlet pipe 51.

2. The operation of driving the second end shield 4 is as follows:

When the furnace hood is opened, the driving mechanism 7 on the second end hood 4 is opened, the second end hood 4 moves rightwards, the mounting seats 18 on the side parts of the second end hood 4 are sequentially abutted against the side parts of the intermediate hoods 3, and the intermediate hoods 3 are pushed to move rightwards until the second end hood 4 and the intermediate hoods 3 are all nested on the first end hood 1.

When the furnace cover is closed, the driving mechanism 7 on the second end cover 4 drives the second end cover 4 to move leftwards, the sealing baffle plate 14 at the right end of the second end cover 4 abuts against the driving baffle plate 13 at the left end of the right middle cover 3, and the middle cover 3 is pulled to move leftwards, so that the middle cover 3 at the right side is pulled to move leftwards in turn until the flue gas pipeline 12 at the left end of the second end cover 4 is inserted into the corresponding inlet pipe 51.

The movable furnace cover can move along the axial direction of the furnace body, and each furnace cover unit can stretch and retract along the axial direction of the furnace body, so that the loading and unloading operation in the furnace is not influenced, and a furnace cover storage area is not required to be additionally arranged.

The utility model has simple structure, is easy to be applied to newly built projects, can be applied to the technical upgrading and reconstruction of the existing projects, and has strong practicability and economy.

Claims

1. A movable hood for an open furnace, characterized by: the movable furnace cover consists of a plurality of furnace cover units, namely a first end cover (1), a second end cover (4) and one or more middle covers (3) connected between the first end cover (1) and the second end cover (4), wherein the diameters of the first end cover (1), the middle cover (3) and the second end cover (4) are sequentially reduced, and the first end cover (1), the middle cover (3) and the second end cover (4) are sequentially connected from right to left in a sleeve type; a rectangular sand seal groove (6) is formed along the upper end of the furnace wall (2) of the open furnace, and the bottoms of the first end cover (1), the middle cover (3) and the second end cover (4) are buried in the sand seal groove (6); the end walls (10) at two ends of the open furnace are provided with connecting boxes (5), the connecting boxes (5) are provided with inlet pipes (51) and outlet pipes (52), the outer ends of the first end cover (1) and the second end cover (4) are closed ends, the ends are provided with flue gas pipelines (12), and the flue gas pipelines (12) are movably inserted into the inlet pipes (51) at the corresponding sides.

2. A movable hood for an open furnace according to claim 1, characterized in that: the left ends of the first end cover (1) and the middle cover (3) are respectively provided with a driving baffle (13), and the lower ends of the driving baffles (13) are contacted with a furnace cover unit at the left side; the right ends of the middle cover (3) and the second end cover (4) are respectively provided with a sealing baffle plate (14), and the sealing baffles (14) are positioned between two adjacent furnace cover units.

3. A movable hood for an open furnace according to claim 2, characterized in that: sealing strips (15) are arranged in the sealing baffle plates (14).

4. A movable hood for an open furnace according to claim 2 or 3, characterized in that: an elastic sealing ring (16) is arranged at the end part of the flue gas pipeline (12).

5. The movable hood for an open-type furnace according to claim 4, wherein: and a sealing plugboard (11) is arranged between the first end cover (1), the second end cover (4) and the sand seal groove (6) at the corresponding end.

6. The movable hood for an open-type furnace according to claim 5, wherein: the side part of the outer end of the first end cover (1) or/and the second end cover (4) is provided with a mounting seat (18), and the mounting seat (18) is provided with a driving mechanism (7).

7. The movable hood for an open-type furnace according to claim 6, wherein: the driving mechanism (7) comprises a motor (71) and a speed reducer (72) which are connected, a gear (73) is arranged at the output end of the speed reducer (72), an operation track (8) is arranged on the side portion of the sand seal groove (6), a rack (17) is arranged on the operation track (8), and the rack (17) is meshed with the gear (73).

8. The movable hood for an open-type furnace according to claim 7, wherein: the rack (17) is positioned on the lower surface of the running rail (8).

9. The movable hood for an open furnace of claim 8, wherein: limiting plates (9) are arranged at two ends of the running track (8).