Novel oval hollow composite plugboard

Abstract

The utility model discloses a novel oval hollow composite inserting plate, which belongs to the technical field of boiler flue valves and comprises two groups of guide frames, a composite inserting plate structure is mounted between the two groups of guide frames and comprises an oval valve plate, and an assembly groove is formed in the surface of the oval valve plate. The two ends of the oval valve plate are fixedly connected with rectangular guide plates, and preformed holes are formed in the surfaces of the rectangular guide plates. A graphite nickel wire packing is installed in the guide frame, and the outer surface of the graphite nickel wire packing is fixedly connected with a pressing plate. The structure of the valve plate of the flue valve is improved, the whole valve plate is composed of the oval valve plate and the rectangular guide plates fixedly connected to the two ends of the oval valve plate, when the flue valve is used, the problems of door plate deformation and flue gas internal leakage caused by too high flue gas temperature of a single plate are solved, and the flue valve has good sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler flue valves, and more specifically to a novel elliptical hollow composite plug plate. Background Art

[0002] The flue valve is a pipe for flue, cold air, combustion air, combustion and gas, which can effectively cut off gas, smoke and air. When the hot blast furnace is burning, the flue valve is opened to allow the exhaust gas to be discharged through the flue; when the hot blast furnace is supplying air, the flue valve is closed to cut off the passage of the flue.

[0003] After searching, the existing announcement number is CN221683705U, which is a combined flue valve for a vertical flue. It includes an adjusting device and a sealing water tank. The adjusting device drives the stainless steel cover to move up and down. When the branch flue is exhausting smoke, the stainless steel cover is lifted up, and the branch flue is connected with the main flue. When the branch flue is not working, the adjusting device drives the stainless steel cover to drop, and the branch flue is isolated from the main flue under the water seal of the sealing water tank. This can avoid the "backflow" phenomenon caused by the inability to close the branch flue valve tightly, and prevent the flue gas from invading the unactivated gas boiler through the branch flue and causing corrosion to the boiler.

[0004] The shape of the existing flue gate valve gate is mostly a single-plate diamond composite, and its sealing surface is inclined, which easily leads to poor sealing of the equipment and causes internal leakage of smoke. At the same time, the setting of the single-plate structure is prone to sticking, shaking, poor sealing of smoke and other phenomena due to the excessively high temperature of the smoke, causing internal leakage of smoke. Therefore, we propose a new type of elliptical hollow composite gate to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a new type of elliptical hollow composite plug plate to improve the valve plate structure of the flue valve. The valve plate as a whole is composed of an elliptical valve plate and a rectangular guide plate fixedly connected to the two ends of the elliptical valve plate. When in use, it solves the problem of deformation of the door plate due to excessively high smoke temperature, which causes internal leakage of smoke and has good sealing performance.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A new type of elliptical hollow composite plugboard, including a guide frame, a composite plugboard structure is installed between two groups of the guide frames, the composite plugboard structure includes an elliptical valve plate, an assembly groove is opened on the surface of the elliptical valve plate, rectangular guide plates are fixedly connected to both ends of the elliptical valve plate, and reserved holes are opened on the surface of the rectangular guide plates;

[0010] A graphite nickel wire packing is installed inside the guide frame, and a pressing plate is fixedly connected to the outer surface of the graphite nickel wire packing.

[0011] Preferably, an arc-shaped transition angle is provided at the connection between the elliptical valve plate and the rectangular guide plate, and the front and back surfaces of the elliptical valve plate are both arc-shaped.

[0012] Preferably, the elliptical valve plate is arranged parallel to the guide frame.

[0013] Preferably, a locking bolt is spirally inserted into the surface of the pressing plate, and the penetrating end of the locking bolt extends into the interior of the graphite nickel wire packing.

[0014] Preferably, the graphite nickel wire packing is attached to the outer wall of the rectangular guide plate, and the rectangular guide plate and the graphite nickel wire packing are arranged in a sliding manner.

[0015] Preferably, a plugging groove is opened on the inner wall of the guide frame, a lining plate is fixedly connected at the position of the plugging groove of the guide frame, and the end face of the rectangular guide plate extends to the surface of the lining plate.

[0016] Preferably, side plates are fixedly connected to the outer wall of the guide frame.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present utility model are as follows:

[0019] (1) In this solution, the valve plate structure of the flue gas valve is improved. The valve plate as a whole is composed of an elliptical valve plate and rectangular guide plates fixedly connected to both ends of the elliptical valve plate. When in use, it solves the problem that the single plate deforms due to too high flue gas temperature, resulting in internal leakage of flue gas, and has good sealing performance.

[0020] (2) In this solution, a graphite nickel wire packing is installed inside the guide frame, a pressing plate is fixedly connected to the outer surface of the graphite nickel wire packing, a lining plate is fixedly connected at the position of the plugging groove of the guide frame, and the end face of the rectangular guide plate extends to the surface of the lining plate. The graphite nickel wire packing inside the guide frame effectively improves the sealing performance at the connection between the guide frame and the rectangular guide plate, and has a good anti-leakage protection effect. Brief description of the drawings

[0021] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0022] Figure 2 Schematic diagram of the elliptical valve plate and rectangular guide plate of the present utility model;

[0023] Figure 3 Schematic three-dimensional structure diagram of the guide frame and side plate of the present utility model;

[0024] Figure 4 Schematic top view structure diagram of the guide frame and side plate of the present utility model.

[0025] Explanation of the reference numerals in the figure:

[0026] 1. Elliptical valve plate; 101. Assembly groove; 2. Rectangular guide plate; 201. Reserved hole; 3. Guide frame; 4. Side plate; 5. Lining plate; 6. Graphite nickel wire packing; 7. Pressure plate; 8. Locking bolt. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment 1:

[0029] Please refer to Figures 1-4 , a new type of elliptical hollow composite plugboard, including a guide frame 3, a composite plugboard structure is installed between two groups of guide frames 3, the composite plugboard structure includes an elliptical valve plate 1, an assembly groove 101 is opened on the surface of the elliptical valve plate 1, rectangular guide plates 2 are fixedly connected to both ends of the elliptical valve plate 1, and reserved holes 201 are opened on the surface of the rectangular guide plates 2;

[0030] A graphite nickel wire packing 6 is installed inside the guide frame 3, and a pressure plate 7 is fixedly connected to the outer surface of the graphite nickel wire packing 6.

[0031] An arc-shaped transition angle is provided at the connection between the elliptical valve plate 1 and the rectangular guide plate 2, the front and back surfaces of the elliptical valve plate 1 are both arc-shaped, and the elliptical valve plate 1 is parallel to the guide frame 3.

[0032] It should be noted that the valve plate structure of the flue gas valve is improved. The whole valve plate is composed of an elliptical valve plate 1 and rectangular guide plates 2 fixedly connected to both ends of the elliptical valve plate 1. When in use, it solves the problem of the deformation of the door plate caused by the too high temperature of the single plate, resulting in the internal leakage of the flue gas, and has good sealing performance.

[0033] Refer toFigures 1-4 , a locking bolt 8 is spirally inserted into the surface of the pressing plate 7, the penetrating end of the locking bolt 8 extends into the interior of the graphite nickel wire packing 6, the graphite nickel wire packing 6 is attached to the outer wall of the rectangular guide plate 2, the rectangular guide plate 2 is slidably arranged with the graphite nickel wire packing 6, a plugging groove is formed in the inner wall of the guide frame 3, a lining plate 5 is fixedly connected at the position of the plugging groove of the guide frame 3, the end face of the rectangular guide plate 2 extends to the surface of the lining plate 5, and a side plate 4 is fixedly connected to the outer wall of the guide frame 3.

[0034] It should be noted that a graphite nickel wire packing 6 is installed inside the guide frame 3, a pressing plate 7 is fixedly connected to the outer surface of the graphite nickel wire packing 6, a lining plate 5 is fixedly connected at the position of the plugging groove of the guide frame 3, the end face of the rectangular guide plate 2 extends to the surface of the lining plate 5, and the graphite nickel wire packing 6 inside the guide frame 3 effectively improves the sealing performance at the connection between the guide frame 3 and the rectangular guide plate 2, having a good anti-leakage protection effect.

[0035] When in use: the valve plate structure of the flue valve is improved. The valve plate as a whole is composed of an oval valve plate 1 and rectangular guide plates 2 fixedly connected to both ends of the oval valve plate 1. When in use, it solves the problem of the deformation of the single plate caused by the too high flue gas temperature, resulting in the internal leakage of the flue gas, and has good sealing performance; a graphite nickel wire packing 6 is installed inside the guide frame 3, a pressing plate 7 is fixedly connected to the outer surface of the graphite nickel wire packing 6, a lining plate 5 is fixedly connected at the position of the plugging groove of the guide frame 3, the end face of the rectangular guide plate 2 extends to the surface of the lining plate 5, and the graphite nickel wire packing 6 inside the guide frame 3 effectively improves the sealing performance at the connection between the guide frame 3 and the rectangular guide plate 2, having a good anti-leakage protection effect.

[0036] The above is only the preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its improvement concept of the present invention, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A novel elliptical hollow composite plugboard, comprising a guide frame (3), characterized in that: A composite plug structure is installed between the two groups of the guide frames (3). The composite plug structure includes an oval valve plate (1). An assembly groove (101) is formed on the surface of the oval valve plate (1). Rectangular guide plates (2) are fixedly connected to both ends of the oval valve plate (1). Reserved holes (201) are formed on the surface of the rectangular guide plates (2). A graphite nickel wire packing (6) is installed inside the guide frame (3). A pressing plate (7) is fixedly connected to the outer surface of the graphite nickel wire packing (6).

2. A novel elliptical hollow composite plugboard according to claim 1, characterized in that: An arc-shaped transition angle is provided at the connection between the oval valve plate (1) and the rectangular guide plate (2). The front and back surfaces of the oval valve plate (1) are both arc-shaped.

3. A novel elliptical hollow composite plugboard according to claim 1, characterized in that: The oval valve plate (1) is arranged parallel to the guide frame (3).

4. A novel elliptical hollow composite plugboard according to claim 1, characterized in that: A locking bolt (8) is spirally inserted into the surface of the pressing plate (7). The penetrating end of the locking bolt (8) extends into the interior of the graphite nickel wire packing (6).

5. A novel elliptical hollow composite plugboard according to claim 1, wherein: The graphite nickel wire packing (6) is attached to the outer wall of the rectangular guide plate (2). The rectangular guide plate (2) is slidably arranged with the graphite nickel wire packing (6).

6. A novel elliptical hollow composite plugboard according to claim 1, characterized in that: A plugging groove is formed on the inner wall of the guide frame (3). A lining plate (5) is fixedly connected to the position of the plugging groove of the guide frame (3). The end face of the rectangular guide plate (2) extends to the surface of the lining plate (5).

7. A novel elliptical hollow composite plugboard according to claim 1, characterized in that: Side plates (4) are fixedly connected to the outer wall of the guide frame (3).

Images