JPH0226914Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is based on a method in which a shield made of a metal plate is attached to the furnace lid body through a spacing piece on the furnace chamber side of the furnace lid body that closes the furnace chamber. It relates to coke oven lids that are installed in parallel.

[Conventional technology]

In such a furnace lid, as shown in FIG. A heat-resistant steel plate shield 1 having a letter-shaped cross section is attached parallel to the furnace cover body 4, and forms a gas passage 3 extending in the height direction between the shield 1 and the heat insulating material 5. Coal in the furnace chamber is prevented from entering this passage 3. Gaseous products released from the coal near the furnace roof during the coking process rise in the gas passage 3, pass through the horizontal space left above the coal seam in the furnace chamber 8, and reach the furnace top. It is sucked out to the outside through the rising pipe. The knife edge-shaped sealing strip 6 attached to the side edge of the furnace lid main body 4 closes the furnace lid frame 7 embedded in the furnace bodies 9a, 9b when closing the furnace lid.
A, 7b are tightly closed to provide an airtight closure.

In such a furnace lid, when the furnace lid is attached or removed, the side edge of the shield may hit the inner wall of the furnace body and damage it, or the side edge of the shield may be deformed. In addition, when the shield moves to the side in the furnace chamber, the coal inside the furnace passes through the larger gap between the side edge of the shield and the wall of the furnace.
It goes around to the gas passage and requires a lot of effort to remove this coal.

To prevent coal from entering the gas passage,
It has been proposed to provide band-shaped sealing plates along the entire height of the shield on both sides of the shield, or to provide band-shaped coal intrusion prevention plates (Japanese Unexamined Patent Publication No. 60-210694 and Utility Model Application No. 1983-1983). No. 158770).

However, due to the sealing plate and coal intrusion prevention plate extending over the entire height of the furnace lid body, there is still a risk of damage to the furnace inner wall when attaching and removing the furnace lid, and there is a risk of damage to the furnace inner wall when the furnace lid is attached or removed. The structure for installing the sealing plate and coal intrusion prevention plate becomes complicated.

[The problem that the idea aims to solve]

An object of the present invention is to provide a furnace lid that has a simple configuration and prevents the shield from shifting inside the furnace chamber.

[Means to solve the problem]

In order to solve this problem, according to the present invention, block-shaped guide and spacing pieces are attached to the side edges of the upper and lower ends of the shield to prevent the shield from shifting laterally within the furnace chamber.

[Effect of idea]

Thus, according to the present invention, by means of the guiding and spacing elements attached to the side edges of the upper and lower ends of the shield,
By centering the shield within the furnace chamber, coal can be easily prevented from entering the gas passage between the shield and the furnace lid body. Since the guiding and spacing elements are block-shaped and do not have sharp edges unlike plates, the walls of the furnace body are not damaged when the furnace cover is attached or removed. Furthermore, since the guide/spacing element does not extend over the entire height of the furnace lid body like conventional sealing plates and coal intrusion prevention plates, it is easier to install it on the furnace lid body.
There is also little effect of deformation due to heat.

〔Example〕

In FIGS. 2 and 3, the same parts as in FIG. The furnace lid main body 4 is lined with a lightweight heat insulating material 5 covered with a protection plate 10. The spacing piece 2 includes shielding plates 1a, 1
At the upper and lower ends of b, 1c, 1d, lightweight insulation material 5
It is fixed to the furnace lid body 4 via a holder 11 that surrounds the furnace lid body 4. The upper and lower ends of the shield 1, that is, the upper end of the uppermost shielding plate 1a and the lower end of the lowermost shielding plate 1d, are provided with side edges 1' to prevent the shielding body 1 from shifting laterally in the furnace chamber 8. and the shielding body 1 and the furnace body 9a,
Block-shaped guide/spacing pieces 12, 13 are attached to keep the gap s between the plate and the plate 9b constant at all times. These guide and spacing pieces 12 and 13 have the same cross-sectional shape and have rounded edges.

[Brief explanation of the drawing]

FIG. 1 is a horizontal sectional view of a conventional coke oven lid, and FIGS. 2 and 3 are a horizontal sectional view and a side view of a coke oven lid according to the present invention. 1... Shielding body, 1'... Side edge, 2... Spacing piece,
4... Furnace lid main body, 12, 13... Guide and spacing retaining pieces.

Claims (1)

[Scope of utility model registration request] In a case where a shield made of a metal plate is attached to the furnace chamber side of the furnace lid body that closes the furnace chamber through a spacer, the side edges 1' of the shield 1 are attached at the upper and lower ends of the furnace lid body. A lid for a coke oven, characterized in that block-shaped guide/spacing pieces 12 and 13 are attached to prevent the shield 1 from shifting laterally within the furnace chamber 8.