JPH06431Y2 - Coke oven lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a furnace lid for opening and closing an opening of a coke oven, and more particularly to an improvement of a pressure welding device for pressing a knife edge against a sealing surface of a furnace lid frame.

[Conventional technology]

Each of the carbonization chambers of the coke oven is provided with openings on both the pusher side for charging the carbonaceous material and the coke side for discharging the carbonized coke. During carbonization of the carbonaceous material, a furnace lid is attached to the opening to keep the inside of the furnace shut off from the outside air. At this time, it is necessary to keep the pressure in the furnace constant and prevent leakage of gas and tar in the furnace and invasion of outside air in order to carry out dry distillation under stable conditions.

Therefore, a furnace lid having a self-sealing mechanism as shown in FIG. 4 (a) has been proposed in Japanese Utility Model Publication No. 53-83543. The furnace lid main body 51 has a concave cross section with both ends protruding outside the furnace body, and a pair of brick support fittings 53 are connected by bolts and nuts 54 with a deformable seal plate 52 sandwiched therebetween. The brick 55 is held and fixed between the brick support fittings 53. The seal plate 52 is attached to the furnace lid body 51 via a packing 56. Seal plate
The knife edge 57 that is integrally connected to both ends of 52,
When the furnace lid body 51 is attached to the furnace lid frame 58, it is pressed against the sheet surface 59 of the furnace lid frame 58.

The furnace lid main body 51 is attached to the furnace lid frame 58 by directly engaging the furnace lid frame 58 with the arm 60 located on the outside as a bar. The arm 60 is connected to a spring chamber 61 provided in the furnace lid main body 51 by a rod 62, and is rotatable about the rod 62. Then, the arm 63 is biased toward the outside of the furnace by the spring 63 built in the spring chamber 61. At this time, since the furnace lid frame 58 or the furnace body is engaged with the furnace lid body 51, a reaction force for pressing the furnace lid body 51 against the furnace lid frame 58 is generated.

Further, on the outer periphery of the furnace lid main body 51, a pressure welding device 64 having a built-in spring for pressing the knife edge 57 against the seat surface 59 is provided. This crimping device 64 allows the knife edge
The 57 is constantly pressed against the seat surface 59 with a predetermined pressing force and shuts off the inside and outside of the coke oven.

[Problems to be solved by the device]

As shown in FIG. 4 (b), the pressure welding device 64 has a pressure welding spring 6
Built in 5. Pressure spring 65 has a knife edge of 5
The 7 side is supported by the end surface of the knife edge support tool 66,
The opposite side is in contact with the pressure adjustment plug 67. The press contact adjusting plug 66 has a structure to be screwed into the tubular portion 68 of the press contact device 64. Then, the shaft portion 69 extending from the knife edge support 66 is passed through the pressure contact adjustment plug 66, and the head member 70 is attached to the upper end thereof.

A gap 71 is formed between the pressure adjustment plug 66 and the head member 70, and the knife edge that is pressed against the seat surface 59 by expanding and contracting the pressure spring 65 in the gap 71.
Give 57 elasticity. However, in this type of pressure welding device, it is important to keep the size of the gap 71 constant.

Also, since the furnace lid may be deformed after long-term use,
It is necessary to adjust the pressing force of the knife edge 57 against the seat surface 59. At this time, the pressure adjustment plug 66 is turned to change the screwing amount into the tubular portion 68. However, since the press contact device of FIG. 4 has a structure in which the press contact adjusting plug 66 itself is rotated, a large force is required for its rotation. Furthermore, the male screw of the press contact adjustment plug 66 is seized on the female screw of the tubular portion 68,
There may be a case where the pressure adjustment plug 66 does not move. As a result, since the press contact adjustment plug 66 is rotated, a work using a large wrench is required. Moreover, since this rotating work is performed at a high place, the greater the force required and the greater the movement, the higher the danger of the work.

Therefore, an object of the present invention is to provide a furnace lid that can easily adjust the pressure contact force for a long period of time by improving the pressure contactor.

[Means for Solving the Problems]

In order to achieve the object of the furnace lid of the present invention, a support shaft extending from a support tool of a knife edge is fitted and a pressure contact spring is interposed around the support shaft, and a cylinder of the cylinder. An inverted L-shaped fixing in which a flat plate portion protruding from both sides and having a long hole extending in the pressing direction of the knife edge is sandwiched, and the flat plate portion is sandwiched between the furnace lid body and a horizontal portion is formed above. The metal fitting, the adjusting bolt screwed into the hole formed in the horizontal portion, and having the lower end abutting against the upper edge of the flat plate portion, and inserted into the long hole of the flat plate portion, and the flat plate portion It is characterized by comprising a bolt for fixing between the main body and the fixing fitting.

〔Example〕

Hereinafter, the features of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side sectional view showing a pressure welding device in a furnace lid of this embodiment. Since the furnace lid itself has basically the same structure as that shown in FIG. 4 except for this pressure welding device, it will be described below with reference to FIG. 4 as appropriate.

Similar to FIG. 4, the furnace lid is provided with a furnace lid main body 1 having a concave cross section with both ends protruding to the outside of the furnace body. The pressure welding device 3 is attached to both ends of the furnace lid body 1 which stands upright with respect to the surface of the furnace lid frame 2. A knife edge 4 and a seal plate 5 are provided on the furnace lid frame 2 side of the pressure welding device 3, and by pressing the knife edge 4 against the sealing surface 6 of the furnace lid frame 2, the inside 7 of the coke oven is removed from outside the furnace. Seal it.

The press contact device 3 includes a cylindrical body 8 having a spring built therein. As shown in the perspective view of FIG. 2, the tubular body 8 is provided with flat plate portions 9a and 9b extending on both sides by integral molding or welding. Long holes 10a and 10b are bored in the flat plate portions 9a and 9b, respectively, and a base 11 is welded to the upper opening of the cylindrical body 8.

As shown in FIG. 3, a pressure contact spring is provided inside the cylindrical body 8.
12 is inserted. A support shaft 14 that extends from the support 13 that supports the knife edge 4 through the pressure contact spring 12 projects to the outside of the base 11, and a nut 15 is attached to the tip thereof. Where pressure contact spring 12
Since the upper end of is in contact with the mouthpiece 11, its repulsive force is applied to the upper surface of the support tool 13 and serves to push down the knife edge 4 against the sealing surface 6.

As shown in FIG. 1, the flat plate portions 9a and 9b extending on both sides of the tubular body 8 are respectively sandwiched between the end portion of the furnace lid body 1 and the fixing fittings 16a and 16b, and bolts 17a and 17b are used. Tightened. The fixing metal fittings 16a, 16b are in the shape of an inverted L-shape, and the hole portion 20 for screwing the adjusting bolts 19a, 19b into the upper horizontal portions 18a, 18b.
a and 20b are formed. Hexagon socket head cap bolts are used as the adjusting bolts 19a and 19b.By rotating the bolts, the flat heads 9a move downward while meshing with the female screws formed in the holes 20a and 20b of the horizontal parts 18a and 18b. Abut on the upper end of 9b.

At this time, by changing the degree of penetration of the adjusting bolts 19a, 19b into the holes 20a, 20b, the positional relationship between the bolts 17a, 17b in the elongated holes 10a, 10b, and by extension, the pressing force of the knife edge 4 against the sealing surface 6, can be adjusted. Can be adjusted. That is, when the tips of the adjusting bolts 19a, 19b are engaged with the female screws of the holes 20a, 20b, the lengths of the adjusting bolts 19a, 19b protruding from the horizontal portions 18a, 18b become shorter, and the sealing surface 6
The cylindrical body 8 is maintained at a position close to. On the other hand, when the adjusting bolts 19a, 19b are screwed into the holes 20a, 20b up to near the root, the adjusting bolts 19a, 19b protruding from the horizontal portions 18a, 18b become long. As a result, the tubular body 8 moves away from the sealing surface 6. The distance from the sealing surface 6 to the lower end of the cylindrical body 8 is the long holes 10a, 10b.
The effective length d can be adjusted within the range.

After the tubular body 8 is set to the sealing surface 6 in a predetermined positional relationship in this manner, the bolts 17a and 17b are tightened to fix the tubular body 8 to the furnace lid body 1. At this time, bolts 17a, 17b
The tightening and rotation of the adjusting bolts 19a and 19b are performed by a hexagon wrench, and the pressure contact force can be adjusted very easily. On the other hand, in the furnace lid having the structure shown in FIG. 4, the press contact adjusting plug 66 has a large diameter screwed into the tubular portion 68 and is pressed by the press contact spring 65. In order to move the press contact adjusting plug 66, an extremely large force and a tool are required.

The pressure applied by the pressure contact device 3 to the sealing surface 6 is
By adjusting the adjusting bolts 19a and 19b protruding upward from the horizontal portions 18a and 18b, the gap 20 between the tubular body 8 and the nut 15 can be secured. Then, it can be easily determined from the size of the gap 20. The adjusting bolts 19a and 19b also serve to prevent the press-contacting device 3 from retracting, and the knife edge 4 can be pressed against the sealing surface 6 with a predetermined pressing force for a long period of time.

[Effect of device]

As described above, in the present invention, the positional relationship of the knife edge with respect to the sealing surface of the furnace lid frame is determined by the screwing amount of the adjusting bolt provided outside the cylindrical body that houses the pressure contact spring for pressing the knife edge. The cylinder body, which has been adjusted and set in position, is fixed to the furnace lid body with bolts. for that reason,
The knife edge can be pressed against the sealing surface with a constant force, and the pressure contact force can be easily changed by changing the screwing amount of the adjusting bolt. In this way, according to the present invention, a knife edge seal is ensured and the inside of the coke oven is kept airtight for a long period of time.

[Brief description of drawings]

FIG. 1 is a sectional view showing a pressure welding device and its vicinity in a furnace lid according to an embodiment of the present invention, FIG. 2 is a perspective view showing a cylindrical body of the pressure welding device, and FIG. 3 is a side view. On the other hand, FIG. 4 shows a furnace lid provided with a conventional pressure welding device. 1: Furnace lid main body 2: Furnace lid frame 3: Pressure welding device 4: Knife edge 5: Seal plate 6: Sealing surface 7: Inside of coke oven 8: Cylindrical body 9a, 9b: Flat plate portion 10a, 10b: Long hole 11: Mouth 12: Press-contact spring 13: Support tool 14: Support shaft 15: Nut 16a, 16b: Fixing metal fitting 17a, 17b: Bolt 18a, 18b: Horizontal part 19a, 19b: Adjusting bolt 20a, 20b: Hole d: Long hole 10a , 10b effective length

Claims (1)

[Scope of utility model registration request] 1. A tubular body having a support shaft extending from a support tool of a knife edge inserted therein, and a pressure contact spring interposed around the support shaft, and a tubular body projecting from both sides of the tubular body, the pressing direction of the knife edge. A flat plate part having a long hole extending to the bottom, a flat plate part sandwiched between the flat plate part and a furnace lid main body, and an inverted L-shaped fixing metal member having a horizontal part formed above, and the flat part provided in the horizontal part. Screwed into the open hole and the lower end abuts the upper edge of the flat plate part, and inserted into the long hole of the flat plate part to fix the flat plate part between the furnace lid body and the fixing metal fitting. A coke oven lid, which is characterized by comprising: