JPH0241152Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to a knife edge pressure welding device for a coke oven door.

<Problems to be solved by this invention> As a pressure welding device of this type, a spring-type pressure welding device as seen in Japanese Patent Publication No. 1981-8152 is used to improve the difficult and labor-intensive hammering out of knife edges. Automatic sealing using a tube has been proposed, but since the spring tube is fixedly attached to the outer periphery of the door body, if the door warps, even if the spring pressure is increased and adjusted, the knife edge still A new problem has arisen in that some parts of the door frame do not come into pressure contact.
The present invention attempts to solve such problems.

<Structure of the invention> The present invention has a sliding surface at the front end and has a sliding surface on the intermediate outer surface of the spring cylinder into which the knife edge pusher is fitted, and on the inner surface of the holder which is attached at a distance to the outer surface of the peripheral wall of the door body. The spring tube is screwed into the holder so that it can be rotated forward and backward based on the holder.

<Example> Examples will be described above based on the drawings.

A large number of holders 3 are installed at intervals on the outer surface of a peripheral wall 2 of a door body 1 by passing bolts 5 through them and tightening nuts 6. 4 is a mounting plate. The tip of each holder 3 forms a cylindrical part with a threaded part 7 carved on its inner surface, and this cylindrical part is oriented in the front-rear direction.

The spring cylinder 9 is screwed into the holder 3 so that it can rotate back and forth by having a threaded part 8 for threading carved in the middle part of the outer surface over a long range twice as long as the threaded part 7 of the holder 3.

The spring tube 9 has a pusher body 11 whose back surface is bonded to the front end of a shaft rod 10 that is inserted in the front-rear direction and is slidably fitted therein. 12 is a sliding step surface. The front end surface of the pusher 11 is provided with a groove 11a that engages with the back of the knife edge 18. The rear end of the shaft rod 10 is a spring tube 9
A stopper nut 13 which protrudes further and prevents the pushing body from popping out due to spring pressure when the door is removed is screwed on. The spring tube 9 is further provided with a threaded groove 14 on the inner surface of its rear end, into which a spring pressure adjusting screw 15 loosely inserted into the shaft rod 10 is screwed, and the screw 15 for adjusting the spring pressure and the pushing body 11 are screwed together. A coil spring 16 is press-fitted therein. The knife edge 18 is welded to a seal plate 17 attached to the outer periphery of the front end of the door body 1, and its back surface engages with the groove 11a of the pusher 11.

Next, the action will be explained.

In the state shown in FIG. 1, that is, when the door body 1 is attached to the furnace port 21, the front end of the knife edge 18 comes into pressure contact with the exposed plane of the door frame 20 to close the furnace port 21. If the pressure contact force is insufficient in the whole or part of the knife edge 18 and gas leakage occurs, the spring pressure adjustment screw 15 of the spring tube 9 is moved forward to strengthen and adjust the pressure contact force to eliminate this problem. Yes, but
If the door body 1 is warped by more than the above-mentioned adjustment limit due to repeated use, and a part of the knife edge 18 separates from the door frame 20, turn the spring tube 9 at that part to the forward direction. It moves. Then, the spring cylinder 9 moves forward centering on the holder 3 while the pusher 11 remains unrotated for the purpose of sliding, and the knife edge 18 is advanced together with the pusher 11 to press into contact with the door frame 20. In the embodiment, the threaded portion 8 provided on the outer surface of the spring tube 9 is carved to be twice as long as the threaded portion 7 of the holder 3, so that the adjustment range due to the forward rotation of the spring tube 9 is sufficiently long as that of the door body 1. Can cover warpage.

<Effects of the invention> Since the invention is constructed as described above, the knife edge can be adjusted by adjusting the adjustment screw, and by rotating the spring tube to move forward and backward, which is an extremely simple and labor-free operation. The effect is that the knife edge can be kept in pressure contact with the door frame by obtaining an adjustment range sufficient to sufficiently follow the warpage of the knife edge.

[Brief explanation of the drawing]

Fig. 1 is a partial cross-sectional plan view showing one embodiment of the present invention, Fig. 2 is an enlarged sectional view of the spring cylinder portion, 1 is the door body, 2 is the peripheral wall, 3 is the holder, 4 is the mounting plate,
5 is a bolt, 6 is a nut, 7 and 8 are threaded parts for screwing, 9 is a spring tube, 10 is a shaft rod, 11 is a pusher body, 11
a is a concave groove, 12 is a sliding step surface, 13 is a stopper nut, 15 is a screw for adjusting spring pressure, 16 is a coil spring, 17 is a seal plate, 18 is a knife edge, 19 is a heat insulating material, 20 is a door frame,
21 is the furnace mouth.

Claims (1)

[Scope of utility model registration request] A threaded portion for screwing the former to make it longer is provided on the outer surface of the intermediate portion of the spring tube which has a sliding surface at the front end and fits the knife edge pusher, and on the inner surface of the holder which is attached at a distance to the outer surface of the peripheral wall of the door body. A pressure welding device for a knife edge in a coke oven, characterized in that a spring cylinder is screwed onto the holder so that it can rotate forward and backward.