Automatic opening and closing device for turning plate of main flue of coke oven

Abstract

The utility model relates to the field of metallurgical coking, in particular to an automatic opening and closing device for a main flue turning plate of a coke oven. Comprising a push rod, one end of the push rod is perpendicularly connected to the axis of the main flue turning plate, a rotating shaft is arranged in a flue and coaxially connected to the axis of the main flue turning plate, a driving part for driving the push rod to move in the circumferential direction of the rotating shaft is arranged in the flue, and the driving part comprises a driving air cylinder arranged in the flue. A piston rod of the driving air cylinder is rotationally connected to the end, away from the main flue turning plate, of the push rod, and the end of the driving air cylinder is rotationally connected to a flue. The device has the technical effect of driving the main flue turning plate to be automatically opened.

Description

Technical Field

[0001] The present application relates to the field of metallurgical coking, and in particular to an automatic opening and closing device for a main flue flap of a coke oven. Background Art

[0002] When the coke oven is heated, the exhaust gas passes through the exhaust gas circulation hole and enters the heat storage chamber from the combustion chamber descending channel. A branch flue is provided at the bottom of the heat storage chamber. The exhaust gas from each descending heat storage chamber flows through the exhaust gas plate and is respectively collected in the machine side and coke side branch flues, and then converges at the main flue at the end of the coke oven and is guided to the root of the chimney, and discharged into the atmosphere with the help of the suction force of the chimney. The flue is made of reinforced concrete and is lined with clay bricks. A gate is provided before the connection between the main flue and the root of the chimney to adjust the suction of the main flue, which is called the main flue flap. Rolling bearings and thrust bearings are provided on the shaft head at the upper part of the flap. The flap is supported by a channel steel structure frame. The flap rotates flexibly to meet the accurate adjustment of the exhaust gas discharge. Generally, the main flue flap is not provided with an automatic adjustment mechanism, but only a manual adjustment mechanism.

[0003] As environmental protection requires that hot exhaust gas from coke ovens must meet ultra-low emission indicators, domestic coking enterprises basically close the gate at the connection between the coke oven main flue and the chimney, open holes in front of the main flue gate to install pipes and valves, use booster fans to guide the coke oven flue exhaust gas into the desulfurization and denitrification device for purification, and then blow it into the main flue gate and discharge it through the chimney.

[0004] When the desulfurization and denitration device is operating normally, the flap at the connection between the main flue and the chimney is in a closed state. When the desulfurization and denitration booster fan is shut down, it is necessary to manually open the main flue flap on site. When the desulfurization and denitration booster fan is turned on, it is still necessary to manually close the main flue flap valve. When the booster fan suddenly shuts down due to a fault, it is necessary to manually open the flap on site. There will be a period of time when the booster fan has stopped but the main flue flap has not been opened, and the coke oven lacks suction, which poses a major safety hazard. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide an automatic opening and closing device for the main flue flap of a coke oven, which can solve the technical problem that the main flue flap cannot be opened automatically.

[0006] The embodiment of the present application provides a coke oven main flue flap automatic opening and closing device adopts the following technical solution:

[0007] An automatic opening and closing device for a coke oven main flue flap comprises a push rod, one end of which is vertically connected to the axis of the main flue flap, a rotating shaft is arranged in the flue, the rotating shaft is coaxially connected to the axis of the main flue flap, and a driving member is arranged in the flue to drive the push rod to move circumferentially along the rotating shaft.

[0008] Furthermore, the driving member includes a driving cylinder disposed in the flue, a piston rod of the driving cylinder is rotatably connected to an end of the push rod away from the main flue flap, and an end of the driving cylinder is rotatably connected to the flue.

[0009] Furthermore, a mounting seat is provided in the flue, two limit blocks are provided on the mounting seat, and the push rod is located between the two limit blocks.

[0010] Furthermore, the limit block is slidably connected to the mounting seat, a driving motor is provided on the mounting seat, an output shaft of the driving motor is connected to a bidirectional screw rod, and two ends of the bidirectional screw rod are respectively connected to the two limit blocks.

[0011] Furthermore, a guide column is provided on the mounting seat, and the guide column is movably connected to the two limit blocks.

[0012] Furthermore, an elastic rubber pad is provided on the surface of the limit block facing the push rod.

[0013] Furthermore, a side rod is provided on the side wall of the push rod, and one end of the side rod is connected to the side of the main flue flap.

[0014] Beneficial effects of the utility model:

[0015] The automatic opening and closing device provided by the utility model drives the push rod to move when the piston rod of the driving cylinder extends, and the push rod rotates along the circumferential direction of the rotating shaft, thereby driving the main flue flap to rotate and open, and when the piston rod of the driving cylinder retracts, the piston rod drives the push rod to move in the opposite direction, and the push rod rotates in the opposite direction along the circumferential direction of the rotating shaft, thereby driving the main flue flap to rotate in the opposite direction and close, thereby realizing the automatic opening and closing of the main flue flap. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0018] Figure 2 A top view of an embodiment of the utility model;

[0019] Figure 3 This is a structural schematic diagram of a mounting base in one embodiment of the utility model;

[0020] The reference numerals are as follows: 1, main flue flap; 11, rotating shaft; 2, push rod; 21, side rod; 3, driving cylinder; 4, mounting seat; 41, limit block; 42, guide column; 5, driving motor; 51, bidirectional screw rod; DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] The present application discloses an automatic opening and closing device for a main flue flap of a coke oven, referring to Figure 1-3 , including a main flue flap 1 arranged in the flue, the main flue flap 1 seals the flue, a rotating shaft 11 is arranged in the flue, both ends of the rotating shaft 11 are rotatably supported on the inner wall of the flue, the main flue flap 1 is fixedly mounted on the rotating shaft 11, and the rotating shaft 11 is coaxially arranged with the axis of the main flue flap 1, so that the main flue flap 1 can be flipped, and the main flue flap 1 rotates on the rotating shaft 11, so that the main flue flap 1 can be opened, so that exhaust can be passed through the flue.

[0028] At the same time, the side wall of the main flue flap 1 is connected to the push rod 2, one end of the push rod 2 is fixedly connected to the axis of the main flue flap 1, the push rod 2 is arranged in a plane direction perpendicular to the main flue flap 1, and a driving member is arranged in the flue to drive the push rod 2 to move circumferentially along the rotating shaft 11.

[0029] Specifically, the driving member includes a driving cylinder 3 installed in the flue, the driving cylinder 3 is arranged in a direction perpendicular to the rotating shaft 11, the piston rod of the driving cylinder 3 is hinged to the end of the push rod 2 away from the main flue flap 1, and the end of the driving cylinder 3 away from the piston rod is hinged to the inner wall of the flue. When the piston rod of the driving cylinder 3 is extended, the piston rod drives the push rod 2 to move, and the push rod 2 rotates along the circumferential direction of the rotating shaft 11, thereby driving the main flue flap 1 to rotate and open. In addition, the side wall of the push rod 2 is provided with a side rod 21, one end of the side rod 21 is fixedly connected to the side of the main flue flap 1, and the other end of the side rod 21 is fixedly connected to the side wall of the push rod 2. The push rod 2 can enhance the connection stability between the push rod 2 and the main flue flap 1, and the structural strength is higher.

[0030] In addition, a mounting seat 4 is fixedly installed in the flue, and two limit blocks 41 are arranged on the mounting seat 4. The limit blocks 41 are slidably connected to the mounting seat 4, and the push rod 2 is located between the two limit blocks 41. A driving motor 5 is fixedly installed in the flue, and the output shaft of the driving motor 5 is coaxially fixedly connected with a bidirectional screw 51, and the bidirectional screw 51 is rotatably carried on the mounting seat 4. The two ends of the bidirectional screw 51 are respectively connected to the two limit blocks 41, and the bidirectional screw 51 drives the two limit blocks 41 to move away from or approach each other. When the driving cylinder 3 drives the push rod 2 to rotate and open the main flue flap 1, the driving motor 5 works to drive the bidirectional screw 51 to rotate, and the bidirectional screw 51 drives the two limit blocks 41 to approach each other to clamp the push rod 2, so that after the main flue flap 1 is opened, it can play a stabilizing role on the push rod 2. In addition, the two limit blocks 41 can also prevent the piston rod of the driving cylinder 3 from excessive movement, thereby causing the main flue flap 1 to rotate excessively. A guide post 42 is fixedly mounted on the mounting seat 4 along the length direction of the bidirectional screw rod 51, and the guide post 42 is movably connected to the two limit blocks 41. The guide post 42 can guide the movement of the limit blocks 41 to improve stability. In addition, an elastic rubber pad is fixedly mounted on the surface of the limit block 41 facing the push rod 2, and the elastic rubber pad can play a buffering role to reduce the impact of the push rod 2 on the limit block 41.

[0031] The implementation principle of an automatic opening and closing device for the main flue flap of a coke oven in an embodiment of the present application is as follows: when the piston rod of the driving cylinder 3 is extended, the piston rod drives the push rod 2 to move, and the push rod 2 rotates along the circumferential direction of the rotating shaft 11, thereby driving the main flue flap 1 to rotate and thus open; when the piston rod of the driving cylinder 3 is retracted, the piston rod drives the push rod 2 to move in the opposite direction, and the push rod 2 rotates in the opposite direction of the rotating shaft 11, thereby driving the main flue flap 1 to rotate in the opposite direction and thus close, thereby realizing the automatic opening and closing of the main flue flap 1.

[0032] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic opening and closing device for a main flue flap of a coke oven, characterized in that: It includes a push rod, one end of which is vertically connected to the axis of the main flue flap, a rotating shaft is arranged in the flue, the rotating shaft is coaxially connected to the axis of the main flue flap, and a driving member is arranged in the flue to drive the push rod to move circumferentially along the rotating shaft.

2. The automatic opening and closing device for the main flue flap of a coke oven according to claim 1 is characterized in that: The driving member comprises a driving cylinder arranged in the flue, a piston rod of the driving cylinder is rotatably connected to an end of the push rod away from the main flue flap, and an end of the driving cylinder is rotatably connected to the flue.

3. The automatic opening and closing device for the main flue flap of a coke oven according to claim 2 is characterized in that: A mounting seat is arranged in the flue, two limit blocks are arranged on the mounting seat, and the push rod is located between the two limit blocks.

4. The automatic opening and closing device for the main flue flap of a coke oven according to claim 3 is characterized in that: The limit block is slidably connected to the mounting seat, a driving motor is arranged on the flue, an output shaft of the driving motor is connected to a bidirectional screw rod, and two ends of the bidirectional screw rod are respectively connected to the two limit blocks.

5. The automatic opening and closing device for the main flue flap of a coke oven according to claim 4 is characterized in that: A guide column is arranged on the mounting seat, and the guide column is movably connected to the two limit blocks.

6. The automatic opening and closing device for the main flue flap of a coke oven according to claim 3 is characterized in that: The surface of the limiting block facing the push rod is provided with an elastic rubber pad.

7. The automatic opening and closing device for the main flue flap of a coke oven according to claim 1 is characterized in that: The side wall of the push rod is provided with a side rod, and one end of the side rod is connected to the side of the main flue flap.

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