False oven door structure applied to coke oven

Abstract

The utility model discloses a false oven door structure applied to a coke oven, belongs to the technical field of coke ovens, and solves the problem that a large amount of high-temperature flue gas and harmful substances overflow due to an open oven door during the period from the completion of coal charging to the closing of the oven door of a coke pusher in the prior art. The device mainly comprises a coke oven, a coal charging car and a coke pushing car, a false oven door is arranged between the coal charging car and the coke pushing car, the false oven door is arranged in a sliding rail in a sliding mode, baffles matched with the false oven door are arranged on the coal charging car and the coke pushing car respectively, and a connecting structure capable of being connected with the false oven door is arranged on the coal charging car. According to the utility model, the false furnace door is pushed by the baffle plates of the coal charging car and the coke pusher to quickly shield the furnace door, so that the emission of toxic smoke is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coke ovens, and in particular to a false oven door structure used in coke ovens. Background Art

[0002] Charging coal into coke ovens is a core process in coking operations. When coal cakes are exposed to high temperatures, they produce hot flue gas and harmful substances such as coal dust, tar smoke, sulfides, and nitrogen oxides. These substances pose a serious threat to air quality and the ecological environment. Therefore, the management of coke oven charging dust is even more important.

[0003] In the existing coke oven production process, although most coke ovens are equipped with an upper smoke extraction system, for the current furnace size of 5-8 meters in length, the furnace door is open from the time when coal loading is completed to the time when the coke pusher closes the furnace door, causing a large amount of high-temperature flue gas and harmful substances to overflow. This not only pollutes the environment, but also takes away a large amount of heat loss, affects production efficiency, and also affects the health of workers. In the prior art, a patent application with publication number CN101709219B discloses a coke oven machine-side smoke shield device, which is provided with a fixed smoke shield, but it requires a smoke shield to be provided on each furnace door; currently, there is a need for a movable false furnace door, which can quickly cover the furnace door, effectively reduce the emission of toxic smoke and dust, and reduce pollution to the environment. Utility Model Content

[0004] The purpose of the utility model is to provide a false door structure for a coke oven to solve the problem in the prior art that the furnace door is open from the time coal loading is completed to the time the coke pusher closes the furnace door, causing a large amount of high-temperature smoke and harmful substances to overflow.

[0005] The utility model is realized through the following technical solutions:

[0006] A false oven door structure used in a coke oven comprises a coke oven, a coal loading car and a coke pushing car. A false oven door is provided between the coal loading car and the coke pushing car. The false oven door is slidably arranged in a slide rail. The coal loading car and the coke pushing car are respectively provided with baffles that cooperate with the false oven door. The coal loading car is provided with a connecting structure that can be connected to the false oven door.

[0007] Furthermore, the connection structure includes an oil cylinder, a connecting block is provided on the piston rod of the oil cylinder, and a locking block is provided on the false furnace door, and the connecting block and the locking block cooperate with each other.

[0008] Furthermore, the slide rail is in an I-shape, and a running wheel is provided on the top of the false furnace door, and the running wheel is in sliding cooperation with the slide rail.

[0009] Furthermore, the baffle is provided with a contact sensor, which is connected to a PLC controller, and the PLC controller controls the opening of the oil cylinder. This application integrates multiple sensors and a PLC controller to achieve automated control, reduce the need for manual intervention, and make the production process more intelligent.

[0010] Furthermore, an encoder is provided on the travel wheel, which is connected to a PLC controller. The false furnace door can slide smoothly on the slide rail, and its position is precisely controlled by the encoder, which helps to quickly complete the coal loading or coke pushing process, shorten the operation cycle, and improve production efficiency.

[0011] Furthermore, the coal loading car and the coke pushing car are both provided with a slide groove, the baffle is slidably arranged in the slide groove, and the baffle is fixed by a locking pin.

[0012] Furthermore, the coal loading car is provided with a limit sensor.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model pushes the false furnace door through the baffles of the coal loading car and the coke pushing car to quickly cover the furnace door, effectively reducing the emission of toxic smoke and dust and reducing pollution to the environment; the setting of the false furnace door reduces the heat loss carried away by the leakage of smoke and dust, helps to improve the energy utilization efficiency of the coke oven and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a top view of the baffle of the coke pushing car of the present invention in contact with the false furnace door;

[0017] Figure 3 It is a top view of the baffle of the coal charging car of the present invention when it contacts the false furnace door.

[0018] In the figure: 1. Coke pusher; 2. Coal charging car; 3. Coke oven; 4. Slide rail; 5. Travel wheel; 6. False oven door; 7. Connecting structure; 8. Oil cylinder; 9. Baffle; 10. Lock block; 11. Connecting block; 12. Slide; 13. Contact sensor. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following is a clear and complete description of the technical solution of the present invention in conjunction with the drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application. In addition, the directional terms mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional terms used are used to illustrate rather than limit the invention of the present invention.

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Example 1: A false door structure for a coke oven, such as Figure 1-Figure 3 As shown, it includes a coke oven 3, a coal loading car 2 and a coke pushing car 1. A false oven door 6 is provided between the coal loading car 2 and the coke pushing car 1. The false oven door 6 is slidably arranged in a slide rail 4. The coal loading car 2 and the coke pushing car 1 are respectively provided with a baffle 9 that cooperates with the false oven door 6. The coal loading car 2 is provided with a connecting structure 7 that can be connected to the false oven door 6. The utility model uses the baffles of the coal loading car and the coke pushing car to push the false oven door to quickly cover the oven door, effectively reducing the emission of toxic smoke and dust, and reducing pollution to the environment.

[0022] Example 2: A false door structure for a coke oven, such as Figure 3 As shown, the connecting structure 7 includes a cylinder 8, a connecting block 11 is provided on the piston rod of the cylinder 8, and a locking block 10 is provided on the false furnace door 6. The connecting block 11 cooperates with the locking block 10. The slide rail 4 is in an I-shape, and a running wheel 5 is provided on the top of the false furnace door 6. The running wheel 5 slides with the slide rail 4.

[0023] The baffle 9 is provided with a contact sensor 13, which is connected to a PLC controller that controls the opening of the oil cylinder 8. This application integrates multiple sensors and a PLC controller to achieve automated control, reduce the need for manual intervention, and make the production process more intelligent. The running wheel 5 is provided with an encoder that is connected to the PLC controller. The false furnace door 6 can slide smoothly on the slide rail 4, and its position is precisely controlled by the encoder, which helps to quickly complete the coal loading or coke pushing process, shorten the operation cycle, and improve production efficiency.

[0024] The coal loading car 2 and coke pushing car 1 are provided with chutes 12, into which baffles 9 are slidably mounted and secured by locking pins. The coal loading car 2 is provided with limit sensors that monitor the position of the piston rod of the oil cylinder 8, thereby connecting and disconnecting the connecting block 11 and the locking block 10. Other features are the same as those of Example 1.

[0025] The dummy furnace door 6 is mounted on the slide rail 4 and can slide left and right. When the baffle 9 is behind the slide slot 12, the dummy furnace door 6 is not controlled by the coal loading car 2. When the baffle 9 is in the working position and locked by the locking pin, the dummy furnace door 6 can be pushed by the baffle 9. A contact sensor 13 is installed on the baffle 9 on the coal loading car 2 to detect whether it is in contact with the dummy furnace door 6. When the baffle 9 contacts the dummy furnace door 6, the contact sensor 13 sends a signal to the PLC controller, which activates the oil cylinder 8 according to the program settings. The piston rod of the oil cylinder 8 drives the connecting block 11, which then docks with the locking block 10 to limit the position, allowing the baffle 9 to move with the coal loading car 2.

[0026] The PLC controller for coal charging car 2 is connected to an encoder mounted on the running wheels 5 and operating synchronously with them. This encoder records the actual position of the furnace where the coal charging car 2 is located. During movement, the encoder value is compared. When the actual position of the dummy furnace door 6 equals the position of the charging furnace, the piston rod of the hydraulic cylinder 8 is retracted. At this point, the connecting block 11 disengages the locking block 10, and the dummy furnace door 6 stops at the current charging furnace. The PLC controller uses a mainstream PROFIBUS or PROFINET communication line. It sets all furnace numbers for the coal charging car 2's furnace area and controls the hydraulic cylinder 8 by comparing the travel data received in real time from the encoder.

[0027] During normal operation, the dummy furnace door 6 is positioned between the coke pusher 1 and the coke charging car 2. It is pushed left and right by the baffles 9 of the coke charging car 2 and the coke pushing car 1. The coke charging car 2 is also equipped with a connecting structure 7, which drives the dummy furnace door 6 in the opposite direction. The slide rails 4 are mounted above the coke charging car 2 and the coke pushing car 1. Their left-right length should be longer than the left-right travel of the coke charging car 2 and the coke pushing car 1.

[0028] like Figure 2-Figure 3 As shown, when coke pusher 1 reaches the planned furnace to remove the door and push coke, its baffle 9 contacts and pushes the dummy furnace door 6 to the right of the planned furnace. After completing the door removal and pushing, coke pusher 1 moves left, leaving space for coal loading car 2. At this point, due to a lack of propulsion, the dummy furnace door 6 remains in place. When coal loading car 2 enters the planned furnace to load coal, contact sensor 13 on baffle 9 senses the dummy furnace door 6 and locks it until the loading task is completed. At this point, coal loading car 2 leaves the planned furnace, and connecting structure 7 releases the dummy furnace door 6 to the current planned furnace. When coke pusher 1 reaches the planned furnace, it contacts the dummy furnace door 6 and moves right, loading the furnace door into the planned furnace, completing one work cycle.

[0029] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A false oven door structure for a coke oven, comprising a coke oven (3), a coal charging car (2) and a coke pushing car (1), characterized in that: A false furnace door (6) is provided between the coal loading car (2) and the coke pushing car (1), and the false furnace door (6) is slidably arranged in the slide rail (4). The coal loading car (2) and the coke pushing car (1) are respectively provided with a baffle (9) that cooperates with the false furnace door (6). The coal loading car (2) is provided with a connecting structure (7) that can be connected to the false furnace door (6).

2. The false door structure for a coke oven according to claim 1, characterized in that: The connecting structure (7) comprises an oil cylinder (8), a connecting block (11) is provided on the piston rod of the oil cylinder (8), a locking block (10) is provided on the false furnace door (6), and the connecting block (11) and the locking block (10) cooperate with each other.

3. The false door structure for a coke oven according to claim 2, characterized in that: The slide rail (4) is in an I-shape, and a running wheel (5) is provided on the top of the false furnace door (6), and the running wheel (5) is in sliding cooperation with the slide rail (4).

4. The false door structure for a coke oven according to claim 3, characterized in that: The baffle (9) is provided with a contact sensor (13), which is connected to a PLC controller, and the PLC controller controls the oil cylinder (8) to open.

5. The false door structure for a coke oven according to claim 4, characterized in that: The traveling wheel (5) is provided with an encoder, and the encoder is connected to a PLC controller.

6. The false door structure for a coke oven according to claim 1, characterized in that: The coal loading car (2) and the coke pushing car (1) are both provided with a slide groove (12), the baffle (9) is slidably arranged in the slide groove (12), and the baffle (9) is fixed by a locking pin.

7. The false door structure for a coke oven according to claim 1, characterized in that: The coal loading car (2) is provided with a limit sensor.

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