JPS5924777B2 - Flue blocker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flue blocking device for a furnace that performs smoking after firing, such as a smoky tile firing furnace, and prevents air from entering from the flue. An afterburner 4 is provided above the aperture plate 2 having a small hole 1 and arranged in a substantially vertical flue 3, and is movable up and down, facing the small hole 1 and closing the small hole 1 when descending. A locking device 8 is provided which elastically urges the lid 5 downward from the support 6 by a spring 7 and locks the lid 5 to the support 6 against the spring 7. The present invention relates to a flue blocking device characterized by comprising:

Conventionally, when closing a flue, the laborious process of inserting an iron plate into the flue to block it and throwing soil onto the iron plate to seal it was done, especially when smoking is performed after firing. When the firing is finished, an afterburner is placed in the flue to burn the unburned exhaust gas and soot from the smoking process, and when the smoking is finished, the afterburner is taken out from the flue, and then the above-mentioned This required a great deal of work to block the flue and prevent air from entering the furnace.

The present invention has been proposed in view of the above-mentioned points, and its object is to provide a flue closing device that can easily perform smoking and closing of the flue after firing is completed.

Detailed explanation will be given below based on the illustrated embodiment. In FIG. 1,
A chimney 9 made of refractory bricks is formed in an L-shape from the furnace, and the flue 3 is vertical instead of horizontal.

The chimney 9 in this vertical part has an opening 1 on the side that can be opened and closed freely.
0 is provided so that the aperture plate 2 can be inserted into the flue 3 through this opening 10.

The diaphragm plate 2 has a small hole 1 approximately in the center thereof, and its peripheral edge is inserted into the flue 3 along the guide groove 11 on the inner surface of the chimney 9. When placed in the chimney 9 in this way, the diaphragm plate 2 The upper and lower sides of the tube communicate only through the small hole 1.

On the upper surface of the aperture plate 2, the edges of the small holes 1 are slightly protruded upward to form annular veins 12.

Reference numeral 13 denotes a vertically cylindrical reactor whose lower edge is fixed to the aperture plate 2 and is arranged concentrically with the small hole 1 .

The upper surface of the reactant 13 is formed into a net shape, and the reactant 13
It is heated by the flame of a ring-shaped afterburner 4 disposed inside, and the unburned exhaust gas from the furnace is completely combusted together with the flame of the afterburner 4.

Reference numeral 14 designates several air holes drilled at the bottom of the reactor 13.

A support 6 is attached to the center of the reactor 13 by a support frame 15, and as shown in FIG.
have.

A sleeve 16 is fitted onto the support 6 so as to be movable up and down, and an inverted conical lid 5 is attached to the lower end of the sleeve 16, and asbestos 18 is attached to the outer peripheral edge of the lid 5.

The lid body 5 is resiliently biased downward by a spring 7 built into the support body 6, and the protrusion 19 of the support body 6 is inserted into the lower horizontal portion of the L-shaped groove 17 provided in the sleeve 16. When the sleeve 16 is rotated and the protrusion 19 enters the vertical portion of the L-shaped groove 17, the lid body 5 is lowered together with the sleeve 16.

The protrusion 19 and the L-shaped groove 17 form a locking device 8 that locks the lid 5.

Since the lid 5 is installed so as to be located directly above the aperture plate 2, when the lid 5 descends, it closes the small hole 1 and seals it with the asbestos 18 that comes into pressure contact with the annular body 12. .

Reference numeral 20 is an operating rod used when rotating the sleeve 16.

Next, the operation will be explained.

Immediately after the firing in the furnace is completed, the opening 10 is opened, the aperture plate 2 is inserted into the flue 3, the afterburner 4 is ignited, and the unburned exhaust gas after being used for smoking is discharged from the furnace. Burn the soot.

At this time, the lid body 5 is locked in the raised position by the locking device 8.

Since the lid body 5 is formed in an inverted conical shape, it does not obstruct the flow of exhaust gas.

When the smoking is finished, the afterburner 4 is extinguished, the sleeve 16 is rotated by hitting the operating rod 20, etc., the locking device 8 is released, and the lid 5 is lowered.

The lid body 5 descends directly below by the sliding guide of the sleeve 16 with respect to the support body 6, and even if it receives exhaust pressure due to the elastic force of the spring 7, it reliably closes the small hole 1.

FIG. 3 shows a cross-sectional view in the closed state. As described above, in the present invention, by arranging a diaphragm plate equipped with an afterburner in the flue for smoking after firing, it is possible to completely burn the unburned exhaust gas that is generated in large quantities during smoking. Of course, the diaphragm plate is equipped with a lid that opens and closes the small hole in the diaphragm plate, and this lid body is oriented with a spring to close the small hole. Since it is biased by a spring, the small hole is closed by the lid just by removing the locking device, and it is also biased by a spring, so it will not float under exhaust pressure. This device reliably closes the flue without causing any damage and prevents air from entering the furnace, making smoking and subsequent flue closing work simple just by arranging the aperture plate. It is something that can be done.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view of the main parts of the same, and FIG. Flue, 4 is afterburner, 5
6 is a support body, 7 is a spring, and 8 is a locking device.

Claims (1)

[Claims] 1. An afterburner is provided above the aperture plate which has a small hole approximately in the center and is placed in a substantially vertical flue, and a lid body that is movable up and down, faces the small hole, and closes the small hole when descending. A flue blockage characterized in that the lid is elastically biased downward from the support by a spring, and a locking device is provided for locking the lid to the support against the spring. Device.