JPS5849462Y2 - Burner heating furnace combustion port sealing device - Google Patents

Description

[Detailed description of the invention] The present invention is a heating furnace in which a burner that injects combustion flame into the furnace faces a combustion port opened in the furnace body, and after heating the inside of the furnace, the combustion port is closed and the outside air is removed. This invention relates to a combustion port sealing device for a burner heating furnace that blocks the intrusion of.

Conventionally, as a combustion port sealing device for a well-known burner heating furnace,
A burner that moves back and forth and a blocking plate that moves left and right in front of the combustion port are connected by a rope, and when the burner is retreated from the combustion port, the blocking plate is interlocked to block the combustion port.
In addition, there is a device that opens the combustion port by interlocking the closing plate when the burner is advanced, but there is no device that presses the closing plate against the combustion port when the burner is moved forward, so a gap is created and it is difficult to completely seal the burner. In addition, as a device for completely sealing, a closing plate is inserted between the burner tip and the combustion port, and the burner tip is moved back and forth by a screw or spring to press the closing plate and the combustion port. Alternatively, there is a device that seals the combustion port by inserting a wedge-shaped plate between the burner tip and the closing plate, but in either case, it is part of the device for sealing the burner tip.

Due to the structure of burner heating furnaces that require sealing, the outer wall of the furnace body is made up of a reinforcing steel frame and an iron plate inside the frame to create an airtight structure.

These reinforcing frames and iron plates expand and contract as the furnace heats and cools, but the iron plate expands and contracts more significantly.

Since the combustion port is installed on an iron plate and the burner is fixed to a reinforcing frame, the gap between the tip of the burner and the combustion port during heating and cooling of the furnace decreases during heating and increases as the furnace cools.

Therefore, if a spring is not used in the position where the burner tip is a part of the sealing device, it is necessary to increase the pressing force between the closing plate and the combustion port two to three times during the cooling process after sealing. there were.

This invention eliminates the drawbacks of conventional devices, achieves the purpose of completely sealing the combustion port, simplifies the structure of the device itself, and makes the operation of closing the combustion port quick and easy. The structure will be explained with reference to the embodiment shown in the figure.A combustion port peripheral wall cylindrical body 2 through which a combustion port 1 is inserted has a mounting plate 3 arranged in the form of a vertical flange at the rear of the outer peripheral surface. At the left and right sides of the peripheral wall cylindrical body 2, the locking columns 5, 5 whose front portions are inwardly protruding portions 4, 4 are connected to the rear surfaces 6, 6 of the protruding portions 4, 4 and the combustion port. The peripheral wall front surface 7 of the peripheral wall cylindrical body 2 is separated and fixed at an appropriate distance.

The disc-shaped lid main body 8 that closes off the front end of the combustion port 1 has an annular groove 10 on the inside of the peripheral edge of the back surface 9 into which the front end of the peripheral wall cylinder 2 is fitted, and a spherical groove in the center of the front surface 11. A pressing protrusion 12 forming a part of the lid body 8 is provided to protrude forward, and a handle rod 13 is provided vertically at the upper part of the circumferential surface of the lid body 8.
A backing 14 made of a heat-resistant material such as asbestos or glass fiber is inserted into the interior of the combustion chamber 0 to form a closing lid 15 . The ■-shaped lid holder is inserted from above and positioned by abutting the lower part of the circumferential side of the closing lid 15 at the position where the annular groove 10 of the closing lid 15 corresponds to the front end of the peripheral wall cylindrical body 2. To be fixed.

Projections 4.4 of the locking columns 5, 5 provided on the left and right sides of the mounting plate 3
The press plate part 20 has a rectangular front face 18 having a width that is overlapped with the back faces 6, 6 and a width of which the front side parts 17 and 17 form a vertical plane, and a wedge-shaped vertical cross section of which the back face 19 forms an inclined plane that slopes forward and downward. None, the pressing tool 22 is configured by providing a handle 21 projecting forward at the upper end of the pressing plate portion 20.

The present invention uses the above-mentioned members, and their functions will be explained below.The combustion is carried out into the furnace at intervals that can guide secondary air to the outside of the center of the combustion port opened in the side wall 23 of the furnace body. In a heating furnace that faces a burner 24 that injects flame, a through hole 25 is provided at an appropriate position in the lower part of the side wall 23 of the furnace body.
Then, the combustion port peripheral wall cylinder 2 is inserted and fixed so that the back surface 26 of the mounting plate 3 is in contact with the front surface 27 of the side wall 23.

When injecting combustion flame into the combustion port 1, remove the pressing tool 22 and the closing lid 15 from the combustion port peripheral wall cylindrical body 2, stop the operation of the burner 24, and immediately remove the closing lid when the combustion flame is cut off. 15 is inserted into the front surface of the combustion port peripheral wall cylindrical body 2 from above until the lower part of the peripheral side surface contacts the stand 16, so that the front end surface of the peripheral wall cylindrical body 2 faces the annular groove 10 of the closing lid 15. , the pressing plate part 2 of the pressing tool 22 is placed in front of the closing lid 15.
Insert from above with the left and right sides 17.17 of the front face 18 overlapping the back faces 6, 6 of the front end protrusions 4.4 of the locking columns 5, 5, and as the pressing tool 22 descends, the back face 19 slopes. The surface presses against the pressing protrusion 12 of the closing lid 15 to forcibly move the closing lid 15 toward the furnace, inserting the front end of the combustion port circumferential wall cylinder 2 into the annular groove 10, and pressing the front end of the combustion port circumferential wall cylindrical body 2 into the annular groove 10. The surface comes into pressure contact with the backing 14 to completely seal and close the combustion port 1.

Moreover, when opening the combustion port 1, it is sufficient to pull out the pressing tool 22 upward and take out the closing lid 15 upward.

Next, to explain the operation of the present invention having the above configuration, when injecting combustion flame into the furnace through the combustion port 1, the pressing tool 22
When the combustion flame is cut off, immediately insert the closing lid 15 from above until it contacts the front lid holder 16 of the combustion port peripheral wall cylinder 2, and press it. The tool 22 is dropped between the protrusions 4, 4 of the closing lid 15 and the locking column 5 and pressed downward, and the pressing protrusion protrudes from the front surface 11 of the closing lid 15 by the inclined surface of the back surface 19 of the pressing tool 22. 1
2 to the rear, the front end of the combustion port peripheral wall cylindrical body 2 is forcibly inserted into the annular groove 10, and the peripheral wall front surface 7 is forced into the backing 14.
The vertical surface of the front face 18 of the pressing tool 22 is in pressure contact with the protrusion 4 of the locking column 5 to completely seal the combustion port 1.
, 4 is always maintained vertically and moves downward, so the force applied to the pressing protrusion 12 on the front surface of the closing lid 15 that presses against the inclined surface of the rear surface 19 of the pressing tool 22 is equally applied to the closing lid 15. In addition, the iron cover presses into contact with the front surface 7 of the combustion port peripheral wall cylindrical body 2 without tilting, completely fulfilling the purpose of blocking, and the closure cover 15 is removed from the combustion port 1 when the burner 24 is operated. Since the material is made of aluminum, it will not become distorted due to heat when exposed to combustion flames, or the surface will become rough due to oxidation, so there is no problem with the sealing effect.

Furthermore, the device of the present invention has a simple structure and has excellent practical effects such as the ability to quickly and easily seal and open the combustion port with the closing lid.

[Brief explanation of drawings]

Fig. 1 is a plan view of the combustion port peripheral wall cylindrical body and its peripheral portion, Fig. 2 is also a front view, and Fig. 3 is the X--
4 is a front view of the closing lid, FIG. 5 is a Y-Y sectional view of FIG. 4, FIGS. 6 and 7 are front and side views of the pressing tool, respectively, and FIG. FIG. 3 is a vertical cross-sectional view of the main part in a state where the combustion port is closed with a closing lid. DESCRIPTION OF SYMBOLS 1... Combustion port, 2... Combustion port peripheral wall cylinder, 3... Mounting plate, 4... Projection, 5...
... Locking column body, 6 ... Back surface of protrusion, 9
・・・・・・Back side of lid, 10 ・・・Annular groove, 1
1...Front surface of the lid, 12...Press projection, 14...Backing, 15...Closing lid, 16...Lid holder Base, 17...:;... Surface side part, 18... Front of pressing tool, 22...
Pressing tool.

Claims (1)

[Scope of utility model registration request] A mounting plate 3 is provided in the shape of a vertical flange at the rear of the outer circumferential surface of the combustion port circumferential wall cylinder 2, and locking columns 5 are provided on both left and right sides of the combustion port circumferential wall cylinder 2, with the front portions having inwardly projecting portions 4, 4, respectively. 5 and a lid holder 16 for positioning downward is fixed to the front surface of the mounting plate 3 at a proper position, and the rear surface 9 of the peripheral wall cylinder 2 is placed between the front end of the combustion port peripheral wall cylinder 2 and the protrusions 4, 4. A closing lid 15 has an annular groove 10 with a backing 14 into which the front end fits, a pressing protrusion 12 that is part of a sphere protrudes from the center of the front surface 11, and a front surface 18 is a vertical plane and a back surface. A pressing tool 22 having an inclined plane 19 tilting forward and downward is pressed from above so that both surface sides 17 and 17 slide in contact with the back surfaces 6, 6 of the protrusions 4, 4. The hole is inserted and the inclined surface of the back surface 19 of the pressing tool 22 is pressed against the pressing protrusion 12 to forcibly press the closing lid 15 backward, so that the front end surface of the combustion port peripheral wall cylindrical body 2 comes into close contact with the backing 14 and the combustion port is closed. 1. A combustion port sealing device for a burner heating furnace, characterized by sealing the combustion port.