JPS6142902Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an internal flame quenching burner device.

In general, an internal flame quenching burner device b is attached to a torch c on a traveling truck a via an adapter d, as shown in Fig. 1, and a mixture of gas and oxygen is passed through a gas conduit e.
The cooling water is introduced into the gas chamber f through the cooling water pipe h and ejected from the nozzle g to form a flame, and the cooling water is led from the cooling water conduit h to the cooling water chamber i and ejected from the cooling water nozzle j to harden the object k to be quenched. This is what we provide.

In the conventional flame quenching burner b, the end face portion l of the gas chamber f is the nozzle portion m of the gas chamber f.
Due to the repeated rapid heating and cooling during quenching, cracks were generated from the welded part n, causing gas leakage, and the cracks had to be repaired several times (about 3 times).
However, the nozzle part m was deformed during repair, resulting in poor hardenability.

Also, it is conceivable to connect the end face part l and the nozzle part m with screws, but in this case, sealing is impossible, and furthermore, it is difficult to replace the nozzle part m from the B' part because the nozzle g will be deformed during welding. Because of this, even though there was no damage to the right side of part B', the entire part was scrapped and a new one was made.

The present invention was developed in view of the above circumstances, and its purpose is to make it possible to replace only the nozzle part when the flame nozzle part is damaged, and to prevent loosening of the threaded joint between the nozzle part and the burner body. An object of the present invention is to provide a flame quenching burner device that can prevent the above.

The present invention will now be described with reference to FIG.

1 in the drawing is a burner main body, and this burner main body 1 is equipped with a cooling water conduit 2 and a gas conduit 3,
A gas conduit 3 is inserted into the cooling water conduit 2, and a cooling water chamber 4 is formed at the tip of the cooling water conduit 2. A large number of cooling water nozzles 5 are formed around the circumference of the cooling water chamber 4 . . In addition, a guide hole 6 is formed in the end face of the cooling water chamber 4.

The cooling water conduit 2 is provided with a connecting pipe section 7 .

A threaded portion 8 is formed at the tip of the gas conduit 3.

9 in the drawing is a nozzle portion, and the nozzle portion 9 has a gas chamber 10, and a large number of gas nozzles 11 are formed on the circumferential surface of the gas chamber 10. A screw hole 12 is formed in the nozzle part 9, a recess 13 is formed in the rear end surface of the nozzle part 9, and a cooling water nozzle 5' is provided at the rear of the nozzle part 9, which exits from the recess 13 to the circumferential surface. is formed.

Then, a nozzle part 9 is attached to the screw part 8 of the burner body 1.
The nozzle part 9 is attached to the burner body 1 by screwing into the screw hole 12 of the nozzle part 9.

In this case, the cooling water enters the recess 13 from the cooling water chamber 4 through the guide hole 6 and is also jetted out from the cooling water nozzle 5'.

Therefore, if the nozzle part 9 is damaged, only this nozzle part 9 needs to be replaced with a new one.

Furthermore, since the cooling water enters the recess 13, loosening caused by thermal expansion of the threaded connection portion A is prevented.

As described in detail above, the present invention provides cooling water conduit 2.
A cooling water chamber 4 is formed at the tip of the cooling water pipe 2 by inserting the gas pipe 3 therein, and a large number of cooling water nozzles 5 are formed around the circumference of the cooling water chamber 4. The burner body 1 has a guide hole 6 formed therein and a screw part 8 formed at the end of the gas conduit 3, and the screw hole 8 of the burner body 1 is attached to and detached from the end face of the gas chamber 10 which has a gas nozzle 11 on the periphery. Since the nozzle part 9 is provided with a threaded hole 12 that can be screwed together and has a recess 13 formed on the end face of the gas chamber 10 that communicates with the guide hole 6 of the burner body 1, only the nozzle part 9 can be replaced with a new one if the flame nozzle part is damaged. What is more, the threaded connection between the nozzle part 9 and the burner body 1 is cooled, and loosening of this part can be prevented.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a part of a flame quenching device in flame quenching equipment, Fig. 2 is an explanatory diagram of a cross-section of the main part of a conventional flame quenching burner device, and Fig. 3 is an explanatory diagram of an embodiment of the present invention. 4 is a sectional view taken along the line in FIG. 3, and FIG. 5 is a view taken in the direction of the line in FIG. 3. 1 is the burner body, 2 is the cooling water conduit, 3 is the gas conduit, 4 is the cooling water chamber, 5 is the cooling water nozzle, 9
1 is a nozzle part, 10 is a gas chamber, and 11 is a gas nozzle.

Claims (1)

[Scope of utility model registration request] A gas conduit 3 is inserted into the cooling water conduit 2 to form a cooling water chamber 4 at the tip of the cooling water conduit 2, and a large number of cooling water nozzles 5 are formed around the circumference of the cooling water chamber 4. A burner body 1 has a guide hole 6 formed in the end face of the chamber 4 and a threaded part 8 formed in the end of the gas conduit 3, and a gas nozzle 1 on the periphery.
a screw hole 1 into which the screw portion 8 of the burner body 1 is removably screwed into the end face of the gas chamber 10 having a screw hole 1;
2 and a nozzle part 9 in which a recess 13 communicating with the guide hole 6 of the burner body 1 is formed in the end face of the gas chamber 10.