Efficient dust removal system for coke pusher of coke oven

Abstract

The utility model discloses an efficient dust removal system for a coke pusher of a coke oven, which comprises the coke oven and the coke pusher arranged on one side of the coke oven, a fixed cover is arranged above a coke oven carbonization chamber, a movable cover is arranged above the coke pusher, both the fixed cover and the movable cover are U-shaped, both the fixed cover and the movable cover are of a cavity structure, and the fixed cover and the movable cover are arranged in parallel. A plurality of suction holes are formed in the tops and the two side walls of the inner sides of the fixed cover and the movable cover respectively, a plurality of communicating pipes are arranged at the end of the fixed cover, the ends of the communicating pipes penetrate through the through holes and then communicate with a cavity in the movable cover, and a blocking plate and a smoke suction pipe are arranged at the other end of the movable cover. The smoke suction pipe is communicated with a smoke collecting pipe arranged on the coke pusher through a telescopic pipe, a push-pull mechanism for pushing the smoke suction pipe to horizontally reciprocate is arranged at the top of the coke pusher, and a side plate capable of horizontally reciprocating is arranged on each of two sides of the coke pusher. In conclusion, the smoke dust collecting device has the advantages of simple structure, good smoke dust collecting effect and complete collection.

Description

Technical Field

[0001] This utility model relates to the field of dust removal technology for coke oven pushers, and specifically to a high-efficiency dust removal system for coke oven pushers. Background Technology

[0002] Coke ovens are used for coke production. After coking is complete, the coke is pushed out of the oven by a coke pusher. During the pushing process, because the oven doors are open, a large amount of smoke and dust overflows, causing pollution to the surrounding environment. To collect and treat the smoke and dust generated during the coke pushing operation, a ground-based dust collection device is installed on the side of the coke oven, and a smoke and dust collection device is installed on the coke pusher car. The smoke and dust collection device collects the smoke and dust generated during the pushing operation, and the ground-based dust collection device treats the collected smoke and dust. The dust collection interface of the dust collection device mainly adopts a water-sealed dust collection interface or a belt-driven trolley dust collection interface.

[0003] Currently, the use of ground-based dust collection devices and dust removal systems for dust collection and treatment still faces the following problems: First, the dust collection system has a relatively complex structure, occupies a large area, requires a large amount of dust removal work, has low dust removal efficiency, and high processing costs; second, after the coke pusher car door is closed, the high-temperature dust generated at the top of the carbonization chamber diffuses rapidly due to thermal buoyancy, making it impossible to collect completely, and the problem of escape still exists; third, within the coverage area of ​​the coke pusher car's fume hood, only the connection between the base of the hood and the main dust collection pipe has a negative pressure zone, and the dust in other areas cannot be completely collected. Therefore, it is objectively necessary to develop a high-efficiency dust removal system for coke oven pusher cars that has a simple structure, good dust capture effect, and complete dust collection. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency dust removal system for coke oven pushers that has a simple structure, good dust collection effect, and complete dust collection.

[0005] The purpose of this utility model is achieved as follows: It includes a coke oven and a coke pusher car located on one side of the coke oven. A fixed cover is installed above the coke oven carbonization chamber, and a movable cover is installed above the coke pusher car. Both the fixed cover and the movable cover are U-shaped and have a hollow structure. Several suction holes are machined on the top and two side walls of the inner side of the fixed cover and the movable cover. Multiple connecting pipes are installed at the end of the fixed cover. One end of the movable cover has a through hole matching the connecting pipes. The end of the connecting pipe passes through the through hole and communicates with the cavity inside the movable cover. A blocking plate and a smoke extraction pipe are installed at the other end of the movable cover. The smoke extraction pipe communicates with the cavity inside the movable cover and is connected to a smoke collection pipe installed on the coke pusher car via a telescopic pipe. A push-pull mechanism is installed on the top of the coke pusher car to push the smoke extraction pipe to move horizontally back and forth. A side plate that can move horizontally back and forth is installed on each side of the coke pusher car, with the upper end face of the side plate contacting the lower end face of the fixed cover and the movable cover, respectively.

[0006] Furthermore, a sealing gasket is provided at the end of the fixing cover.

[0007] Furthermore, the push-pull mechanism includes a cylinder and a connecting rod disposed at the end of the cylinder piston rod. The cylinder is mounted on the coke pusher car, and the connecting rod is connected to the flue pipe.

[0008] Furthermore, the top of the coke pusher is equipped with a slide rail, on which a slider is slidably connected, and the slider is connected to the flue pipe.

[0009] Furthermore, an air distributor is installed on one side of the coke pusher, and a blower is connected to the air distributor. Several air jet holes are installed on the air distributor at an angle upwards.

[0010] Furthermore, a slide bar is provided at the upper end of the side plate, and grooves matching the slide bar are machined at the lower ends of the fixed cover and the movable cover. The cross-sectional shape of the slide bar is T-shaped or dovetail-shaped.

[0011] When this invention is in operation, the coke pusher car moves to the outside of the coke oven carbonization chamber where coke pushing is required. The push-pull mechanism is activated, pushing the smoke extraction pipe and the movable hood towards the coke oven until the connecting pipe on the fixed hood extends into the cavity of the movable hood. At this point, the fixed hood and the movable hood are integrated, and their internal cavities are interconnected. Simultaneously, the two side plates move towards the coke oven until their sides abut against the side wall of the coke oven. At this point, the fixed hood, the movable hood, the blocking plate, and the two side plates form a unified smoke hood within the space between the coke oven and the coke pusher car. The system's smoke extraction system... During operation, air is drawn from the cavities of the fixed and movable hoods, creating negative pressure zones at each suction port. When the furnace door is opened for coke pushing, the smoke and dust overflowing from the machine-side furnace door are drawn into the cavities inside the fixed and movable hoods through each suction port. Then, they enter the smoke collection pipe through the smoke extraction pipe and telescopic pipe, and subsequently enter the dust treatment equipment for unified dust removal. After the coke pushing operation is completed, the machine-side furnace door is closed, and the push-pull mechanism pulls the smoke extraction pipe and movable hood towards the coke pushing car to reset for standby. At the same time, the side plates are retracted to both sides of the coke pushing car for standby, completing the collection and treatment of smoke and dust in one coke pushing operation. In the above process, dust collection is mainly achieved through a fixed hood, a movable hood, and side plates, and is further processed by dust removal equipment on the coke pusher. The entire equipment has a relatively simple structure and occupies a small area. Secondly, in this invention, the fixed hood, movable hood, and side plates create a relatively sealed dust collection space between the coke oven and the coke pusher. Based on the principle that the high-temperature dust generated at the top of the carbonization chamber will rise due to thermal buoyancy, suction holes are provided on the fixed hood and movable hood. After the dust rises, it enters the cavity inside the fixed hood and movable hood through the suction holes. The exhaust is handled by two side plates, which prevent smoke and dust from escaping to the sides, resulting in better smoke and dust collection. Furthermore, in traditional coke pusher hoods, the negative pressure zone only exists at the connection between the hood's base and the main dust collection pipe. In this invention, several suction holes are provided on the fixed and movable hoods, creating a negative pressure zone near each hole. This ensures that negative pressure zones are generated throughout the fixed and movable hoods, allowing for simultaneous collection of smoke and dust in all areas, improving the collection efficiency and ensuring complete dust collection. In summary, this invention has the advantages of simple structure, good smoke and dust collection effect, and complete collection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0014] Figure 3 This is a schematic diagram of the connection structure of the fixed cover 3, the connecting pipe 6, and the movable cover 4 in this utility model;

[0015] In the diagram: 1-coke oven, 2-coke pusher car, 3-fixed cover, 4-moving cover, 5-suction hole, 6-connecting pipe, 7-blocking plate, 8-exhaust pipe, 9-telescopic pipe, 10-smoke collecting pipe, 11-side plate, 12-sealing gasket, 13-cylinder, 14-connecting rod, 15-slide rail, 16-slider, 17-gas distributor, 18-slide bar. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the present invention shall fall within the protection scope of the present invention.

[0017] like Figures 1-3 As shown, this utility model includes a coke oven 1 and a coke pusher 2 disposed on one side of the coke oven 1. The coke oven 1 and the coke pusher 2 are existing technologies. The coke oven 1 is used for the coking of coal, and the coke pusher 2 is used to push coke out of the carbonization chamber. It is also equipped with corresponding dust treatment equipment to treat the dust escaping from the carbonization chamber. A fixed cover 3 is disposed above the carbonization chamber of the coke oven 1, and a movable cover 4 is disposed above the coke pusher 2. Both the fixed cover 3 and the movable cover 4 are U-shaped and have a cavity structure. Several suction holes 5 are machined on the top and two side walls of the inner side of the fixed cover 3 and the movable cover 4. Multiple connecting pipes 6 are disposed at the end of the fixed cover 3. One end of the cover 4 is machined with a through hole that matches the connecting pipe 6. The end of the connecting pipe 6 passes through the through hole and communicates with the cavity inside the movable cover 4. The other end of the movable cover 4 is provided with a blocking plate 7 and a smoke extraction pipe 8. The smoke extraction pipe 8 communicates with the cavity inside the movable cover 4. The smoke extraction pipe 8 is connected to the smoke collection pipe 10 provided on the coke pusher 2 through a telescopic pipe 9. The top of the coke pusher 2 is provided with a push-pull mechanism that pushes the smoke extraction pipe 8 to move horizontally back and forth. The push-pull mechanism is existing technology and only needs to be able to realize the back and forth movement of the smoke extraction pipe 8. Each side of the coke pusher 2 is provided with a side plate 11 that can move horizontally back and forth. The upper end surface of the side plate 11 contacts the lower end surface of the fixed cover 3 and the movable cover 4, respectively.

[0018] When this invention is in operation, the coke pusher 2 moves to the outside of the coke oven 1 carbonization chamber where coke pushing is required, and activates the push-pull mechanism. The push-pull mechanism pushes the smoke extraction pipe 8 and the movable hood 4 towards the coke oven 1 until the connecting pipe 6 on the fixed hood 3 extends into the cavity of the movable hood 4. At this time, the fixed hood 3 and the movable hood 4 are connected as one unit, and the cavities inside the fixed hood 3 and the movable hood 4 are interconnected. Simultaneously, the two side plates 11 move towards the coke oven 1 until the sides of the side plates 11 abut against the side wall of the coke oven 1. At this time, the fixed hood 3, the movable hood 4, the blocking plate 7, and the two side plates 11 form an integrated smoke hood in the space between the coke oven 1 and the coke pusher 2. When the system's smoke extraction system is running, it extracts air from the cavities of the fixed hood 3 and the movable hood 4, creating negative pressure areas at each suction port 5. When the furnace door is opened for coke pushing, the smoke and dust overflowing from the machine-side furnace door are drawn into the cavities inside the fixed hood 3 and the movable hood 4 through each suction port 5. Then, it enters the smoke collection pipe 10 through the smoke extraction pipe 8 and the telescopic pipe 9, and subsequently enters the dust treatment equipment for unified dust removal. After the coke pushing operation is completed, the machine-side furnace door is closed, and the push-pull mechanism pulls the smoke extraction pipe 8 and the movable hood 4 towards the coke pushing car 2 to reset for later use. At the same time, the side plates 11 are retracted to both sides of the coke pushing car 2 for later use, completing the collection and treatment of smoke and dust in one coke pushing operation. In the above process, the dust collection is mainly accomplished through the fixed hood 3, the movable hood 4, and the side plate 11, and is treated in conjunction with the dust removal equipment on the coke pusher 2. The entire equipment has a relatively simple structure and occupies a small area. Secondly, in this utility model, the fixed hood 3, the movable hood 4, and the side plate 11 form a relatively sealed dust collection space between the coke oven 1 and the coke pusher 2. Based on the principle that the high-temperature dust generated at the top of the carbonization chamber will rise due to thermal buoyancy, suction holes 5 are provided on the fixed hood 3 and the movable hood 4. After the dust rises, it enters the fixed hood 3 and the movable hood 4 through the suction holes 5. The cavity allows for exhaust, while the two side plates 11 prevent smoke and dust from escaping to both sides, resulting in better smoke and dust collection. In addition, in the coverage area of ​​the traditional coke pusher 2 smoke hood, there is only a negative pressure zone at the connection between the root of the smoke hood and the main dust collection pipe. In this utility model, several suction holes 5 are provided on the fixed hood 3 and the movable hood 4. A negative pressure zone is generated near each suction hole 5, so that negative pressure zones are generated in all parts of the fixed hood 3 and the movable hood 4. Thus, smoke and dust in each area can be collected simultaneously, improving the smoke and dust collection effect and ensuring complete collection of smoke and dust, resulting in better smoke and dust capture.

[0019] A sealing gasket 12 is provided at the end of the fixed cover 3. With the extension of the usage time or the error during manufacturing, a certain gap will be generated between the fixed cover 3 and the movable cover 4. Smoke and dust will escape from these gaps, causing environmental pollution. In order to solve the gap problem, a sealing gasket 12 is provided on the fixed cover 3. When the movable cover 4 moves towards the fixed cover 3 and presses the fixed cover 3, the gap can be eliminated, thereby preventing the escape of smoke and dust.

[0020] The push-pull mechanism includes a cylinder 13 and a connecting rod 14 located at the end of the piston rod of the cylinder 13. The cylinder 13 is mounted on the coke pusher 2, and the connecting rod 14 is connected to the flue pipe 8. The piston rod of the cylinder 13 drives the connecting rod 14 to move back and forth, which in turn drives the flue pipe 8 and the moving hood 4 to move back and forth. During the movement, the telescopic tube 9 shrinks or stretches as needed.

[0021] The top of the coke pusher 2 is equipped with a slide rail 15, and a slider 16 is slidably connected to the slide rail 15. The slider 16 is connected to the smoke extraction pipe 8. The slider 16 has a positioning and guiding function for the smoke extraction pipe 8, ensuring that the smoke extraction pipe 8 can move back and forth smoothly and reducing the shaking of the smoke extraction pipe 8 and the moving cover 4 during the movement.

[0022] A gas distributor 17 is provided on one side of the coke pusher 2. A blower is connected to the gas distributor 17, and several air jet holes are inclined upward on the gas distributor 17. The gas distributor 17 is existing technology and can evenly distribute the gas. In this invention, when the blower operates, it blows the gas into the gas distributor 17, and then sprays it out from the air jet holes on the gas distributor 17. This gas pushes the smoke and dust upward, promotes the collection of smoke and dust, improves the collection efficiency and effect, and at the same time, prevents the smoke and dust from escaping from the end of the moving hood 4 too quickly.

[0023] The upper end of the side plate 11 is provided with a slide bar 18, and the lower end of the fixed cover 3 and the movable cover 4 is machined with a groove that matches the slide bar 18. The cross-sectional shape of the slide bar 18 is T-shaped or dovetail-shaped. During use, it was discovered that gaps often form between the side plate 11 and the fixed cover 3, and between the side plate 11 and the movable cover 4. A small amount of smoke and dust escapes from these gaps, causing pollution to the surrounding environment. To solve this problem, a slider 18 is provided at the upper end of the side plate 11. The slider 18 can slide within the grooves at the lower ends of the fixed cover 3 and the movable cover 4. This structure has the following advantages: First, the cooperation between the slider 18 and the groove guides and restricts the movement of the side plate 11, allowing the side plate 11 to move smoothly horizontally without tilting. Second, the slider 18, located within the groove, forms a sealing structure, eliminating the gaps between the side plate 11 and the fixed cover 3, and between the side plate 11 and the movable cover 4, thereby preventing the escape of smoke and dust. In addition, setting the cross-sectional shape of the slider 18 to T-shape or dovetail shape can also prevent the slider 18 from falling out of the groove, thus having a positioning function.

Claims

1. A high-efficiency dust removal system for a coke oven pusher car, comprising a coke oven (1) and a pusher car (2) disposed on one side of the coke oven (1), characterized in that... A fixed cover (3) is provided above the carbonization chamber of the coke oven (1), and a movable cover (4) is provided above the coke pusher (2). Both the fixed cover (3) and the movable cover (4) are U-shaped and have a cavity structure. Several suction holes (5) are machined on the top and two side walls of the inner side of the fixed cover (3) and the movable cover (4). Multiple connecting pipes (6) are provided at the end of the fixed cover (3). A through hole matching the connecting pipe (6) is machined at one end of the movable cover (4). The end of the connecting pipe (6) passes through the through hole and connects with the movable cover (4). 4) The cavity inside is connected. The other end of the movable cover (4) is provided with a blocking plate (7) and a smoke extraction pipe (8). The smoke extraction pipe (8) is connected to the cavity inside the movable cover (4). The smoke extraction pipe (8) is connected to the smoke collection pipe (10) provided on the coke pusher (2) through the telescopic pipe (9). The top of the coke pusher (2) is provided with a push-pull mechanism that pushes the smoke extraction pipe (8) to move horizontally back and forth. Each side of the coke pusher (2) is provided with a side plate (11) that can move horizontally back and forth. The upper end surface of the side plate (11) is in contact with the lower end surface of the fixed cover (3) and the movable cover (4), respectively.

2. The high-efficiency dust removal system for a coke oven pusher car according to claim 1, characterized in that: The end of the fixed cover (3) is provided with a sealing gasket (12).

3. The high-efficiency dust removal system for a coke oven pusher car according to claim 1, characterized in that: The push-pull mechanism includes a cylinder (13) and a connecting rod (14) disposed at the end of the piston rod of the cylinder (13). The cylinder (13) is mounted on the coke pusher (2), and the connecting rod (14) is connected to the smoke extraction pipe (8).

4. The high-efficiency dust removal system for a coke oven pusher car according to claim 1, characterized in that: The top of the coke pusher (2) is provided with a slide rail (15), and a slider (16) is slidably connected on the slide rail (15). The slider (16) is connected to the smoke extraction pipe (8).

5. The high-efficiency dust removal system for a coke oven pusher car according to claim 1, characterized in that: A gas distributor (17) is provided on one side of the coke pusher (2). A blower is connected to the gas distributor (17). Several air jet holes are provided on the gas distributor (17) at an angle upward.

6. The high-efficiency dust removal system for a coke oven pusher car according to claim 1, characterized in that: The upper end of the side plate (11) is provided with a slide bar (18), and the lower end of the fixed cover (3) and the movable cover (4) is machined with a groove that matches the slide bar (18). The cross-sectional shape of the slide bar (18) is T-shaped or dovetail-shaped.

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