Automatic opening and closing device for flue turning plate

Abstract

The utility model provides a flue turning plate automatic opening and closing device, and relates to the technical field of flue gas treatment.The flue turning plate automatic opening and closing device comprises a flue body, a turning plate structure, a driving structure and a booster fan, a bearing part is arranged at the top end of the turning plate structure, and the turning plate structure is rotationally arranged on the flue body through the bearing part; the bearing part is arranged on the flue body, the driving structure is arranged on the flue body and connected with the bearing part, the flue body is connected with a waste gas pipe, the booster fan is arranged on the waste gas pipe, and an electric signal of the booster fan is linked with an electric signal of the driving structure. The booster fan is interlocked with the driving structure, when the waste gas pipe is closed, opening and closing of the main flue turning plate can be automatically controlled through the driving structure, gas is effectively prevented from being accumulated in the flue to generate explosion, and safety is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of flue gas treatment, and in particular to an automatic opening and closing device for a flue flap. Background Art

[0002] When the coke oven is heated, the exhaust gas enters the regenerator from the combustion chamber descending channel, and is collected to the machine side and coke side branch flues through branch pipes at the bottom of the regenerator. After merging at the main flue at the end of the coke oven, it is guided to the root of the chimney and discharged into the atmosphere with the help of the chimney's suction force. A manual adjustment flap is provided before the connection between the main flue and the chimney root to adjust the suction of the main flue.

[0003] As environmental protection requires that the hot exhaust gas from the coke oven must meet ultra-low emission indicators, the current method is to close the manual adjustment flap at the connection between the coke oven main flue and the chimney, open a hole in front of the manual adjustment flap of the main flue to install pipes and valves, and use a booster fan 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 denitrification 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 denitrification booster fan stops, it is necessary to manually open the main flue flap on site. When the desulfurization and denitrification booster fan is started, it is still necessary to manually close the main flue flap valve. When the booster fan suddenly stops due to a failure, manual labor is required to 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, posing a major safety hazard.

[0005] In view of this, the present application aims to provide a flue flap automatic opening and closing device to better solve the above-mentioned technical problems. Summary of the invention

[0006] The purpose of the embodiments of the present application is to provide a flue flap automatic opening and closing device, which can solve the technical problem of automatic opening and closing of the flue flap.

[0007] An embodiment of the present application provides an automatic opening and closing device for a flue flap, comprising a flue body, a flap structure, a driving structure and a booster fan, a bearing member being provided at the top of the flap structure, the flap structure being rotatably arranged on the flue body via the bearing member, the driving structure being arranged on the flue body and connected to the bearing member, the flue body being connected to an exhaust pipe, the booster fan being arranged on the exhaust pipe, and an electrical signal of the booster fan being interlocked with an electrical signal of the driving structure.

[0008] Furthermore, the bearing component includes a rolling bearing component and a thrust bearing component.

[0009] Furthermore, the driving structure includes a push rod, a telescopic rod, a driving cylinder and a solenoid valve, one end of the push rod is connected to the bearing member, the other end of the push rod is connected to the telescopic rod, the driving cylinder is connected to the telescopic rod, and the solenoid valve is connected to the driving cylinder.

[0010] Furthermore, the driving structure is also provided with an opening limit and a closing limit, and the opening limit and the closing limit are installed in the flue body and are used to feedback the position of the flap structure.

[0011] Furthermore, the driving cylinder is configured as a driving air cylinder.

[0012] Furthermore, the driving cylinder is connected to an air intake pipe, and the solenoid valve is arranged on the air intake pipe.

[0013] Furthermore, a control valve is provided on the exhaust pipe.

[0014] Beneficial effects of the utility model:

[0015] The utility model provides an automatic opening and closing device for a flue flap, comprising a flue body, a flap structure, a driving structure and a booster fan. A bearing member is provided at the top of the flap structure, and the flap structure is rotatably arranged on the flue body through the bearing member. The driving structure is arranged on the flue body and connected with the bearing member. The flue body is connected with an exhaust pipe, and the booster fan is arranged on the exhaust pipe, and the electrical signal of the booster fan is interlocked with the electrical signal of the driving structure. The utility model has a simple structure and a reasonable design. By interlocking the booster fan with the driving structure, when the exhaust pipe is closed, the opening and closing of the main flue flap can be automatically controlled by the driving structure, thereby effectively preventing gas from accumulating in the flue and causing explosion, thereby ensuring safety. 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 It is a schematic diagram of the connection between the flue body and the driving structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the connection between the flue body, the exhaust pipe and the booster fan of the utility model.

[0019] The reference numerals are:

[0020] The flue body 1, the flap structure 2, the driving structure 3, the push rod 31, the telescopic rod 32, the driving cylinder 33, the solenoid valve 34, the opening limit 35, the closing limit 36, the air intake pipe 37, the booster fan 4, the bearing part 5, the exhaust pipe 6, and the control valve 61. 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] See also Figure 1-Figure 2 As shown, the flue flap automatic opening and closing device described in this embodiment includes a flue body 1, a flap structure 2, a driving structure 3 and a booster fan 4, a bearing member 5 is provided at the top of the flap structure 2, the flap structure 2 is rotatably arranged on the flue body 1 through the bearing member 5, the driving structure 3 is arranged on the flue body 1 and connected with the bearing member 5, the flue body 1 is connected with an exhaust pipe 6, a control valve 61 is provided on the exhaust pipe 6, the booster fan 4 is arranged on the exhaust pipe 6, and the electrical signal of the booster fan 4 is interlocked with the electrical signal of the driving structure 3.

[0028] This embodiment has a simple structure and a reasonable design. By interlocking the booster fan 4 with the drive structure 3, when the exhaust pipe 6 is closed, the opening and closing of the main flue flap can be automatically controlled by the drive structure 3, effectively preventing gas from accumulating in the flue and causing explosion, thereby ensuring safety.

[0029] In some specific embodiments, the bearing component 5 includes a rolling bearing component 51 and a thrust bearing component 52 .

[0030] In this embodiment, it is specifically shown that the flexible rotation of the flap structure 2 is achieved by the cooperation of the rolling bearing member 51 and the thrust bearing member 52 .

[0031] In some specific embodiments, the driving structure 3 includes a push rod 31, a telescopic rod 32, a driving cylinder 33 and a solenoid valve 34, one end of the push rod 31 is connected to the bearing member 5, the other end of the push rod 31 is connected to the telescopic rod 32, the driving cylinder 33 is connected to the telescopic rod 32, and the solenoid valve 34 is connected to the driving cylinder 33.

[0032] Specifically, the driving structure 3 is further provided with an opening limit 35 and a closing limit 36 ​​, and the opening limit 35 and the closing limit 36 ​​are installed in the flue body 1 for feeding back the position of the flap structure 2 .

[0033] Specifically, in this embodiment, the push rod 31 is in contact with the rolling bearing member 5 to push the rolling bearing member 5 to roll, thereby realizing the rotation of the flap structure 2.

[0034] During specific use, the shaft head rolling bearing part 51 of the flap structure 2 is connected to the push rod 31, the drive cylinder 33 is connected to the push rod 31, and a switch limit is installed to feedback the state of the flap structure 2, and the drive cylinder 33 is interlocked with the operating signal of the booster fan 4 used for desulfurization and denitrification, so that when the desulfurization and denitrification booster fan 4 stops, the main flue flap structure 2 is automatically opened to prevent the desulfurization and denitrification booster fan 4 from suddenly stopping, and the main flue flap cannot be opened in time, resulting in accumulation of coal gas in the coke oven flue, thereby effectively ensuring safety of use.

[0035] In some specific embodiments, the driving cylinder 33 is configured as a driving air cylinder.

[0036] Specifically, the driving cylinder is connected to an air intake pipe 37 , and the solenoid valve 34 is disposed on the air intake pipe 37 .

[0037] The present embodiment has a simple structure and a reasonable design. Specifically, a pneumatic cylinder is used. When driving, the air intake pipe 37 is connected to the air source, and the air intake or exhaust is controlled by the solenoid valve 34. Then, the telescopic rod 32 is controlled to perform telescopic action by driving the pneumatic cylinder, and the rolling bearing 51 is pushed to roll by the push rod 31 to realize the rotation of the flap structure 2, thereby realizing flexible control.

[0038] Specifically, in this embodiment, a connecting seat can be set on the flue body 1 at the connection between the push rod 31 and the telescopic rod 32, and the push rod 31 can be rotatably set on the connecting seat. The push rod 31 is driven to rotate by the telescopic rod 32 to realize the driving of the rolling bearing component 51, thereby realizing the rotation of the flap structure 2.

[0039] 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. A flue flap automatic opening and closing device, characterized in that: It includes a flue body, a flap structure, a driving structure and a booster fan, wherein a bearing is provided at the top of the flap structure, and the flap structure is rotatably arranged on the flue body through the bearing, the driving structure is arranged on the flue body and connected with the bearing, the flue body is connected with an exhaust pipe, and the exhaust pipe is located at the front end of the flap structure, the booster fan is arranged on the exhaust pipe, and the electrical signal of the booster fan is interlocked with the electrical signal of the driving structure.

2. The automatic opening and closing device for flue flap according to claim 1 is characterized in that: The bearing components include rolling bearing components and thrust bearing components.

3. The automatic opening and closing device for flue flap according to claim 1 is characterized in that: The driving structure includes a push rod, a telescopic rod, a driving cylinder and a solenoid valve, one end of the push rod is connected to the bearing member, the other end of the push rod is connected to the telescopic rod, the driving cylinder is connected to the telescopic rod, and the solenoid valve is connected to the driving cylinder.

4. The automatic opening and closing device for flue flap according to claim 3 is characterized in that: The driving structure is also provided with an opening limit and a closing limit, and the opening limit and the closing limit are installed in the flue body and are used to feedback the position of the flap structure.

5. The automatic opening and closing device for flue flap according to claim 3 is characterized in that: The driving cylinder is configured as a driving air cylinder.

6. The automatic opening and closing device for flue flap according to claim 5 is characterized in that: The driving cylinder is connected with an air intake pipe, and the solenoid valve is arranged on the air intake pipe.

7. The automatic opening and closing device for flue flap according to claim 5 is characterized in that: The exhaust pipe is provided with a control valve.

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