JPH0243577Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a welding gas suction machine that sucks gas and fume generated during welding.

(Prior art) This type of suction machine sucks high-temperature gas and flaming spatter into the machine, so if these things reach the filter before it has cooled down, it can damage the filter and significantly shorten the life of the filter. There is a problem that the filter performance may be degraded.

(Technical Issues) The present invention solves the above-mentioned problems.
The purpose of this is to remove solid components by colliding the sucked gas flow with a deflector and passing it through a filter when sucking solid slag gasified by high heat during welding and other gases and fumes generated during welding. It is an object of the present invention to provide a welding gas suction machine which has excellent workability and safety and is capable of primary recovery using a deflector and extinguishing a fire.

(Technical Means) The purpose is to connect a suction hose 4 for feeding gas generated during welding from a suction nozzle 1 into a filter 3 of a suction machine main body 2 to an outer cover 5 removably provided on the main body 2. The connection port 6 of the suction hose 4 is provided at an eccentric position of the outer cover 5, and a deflector cover 7 is provided oppositely at a constant interval inside the cover 5. provides a through hole 8 to the filter 3 at a position spaced apart from the connecting port 6 in the eccentric position to prevent the gas flow sucked from the connecting port 6 from going directly to the through hole 8;
This is achieved by providing a guide plate 9 between the connection port 6 and the through hole 8 for colliding solid slag, spatter, etc. in the suction gas flow.

(Embodiment) The suction device in the illustrated embodiment has a cylindrical sealed body 2, and the body 2 has an outer cover 5 with a socket 10 for a detachable hose 4 protruding from one end of the opening 2a at an eccentric position. and the deflector cover 7 are tightly attached through the packing 11, and the opening 2 on the other side is
b is a rear plate 13 with a sound deadening plate 12 attached to almost the entire surface;
is attached, and a main body main portion 2c is formed which is sealed by a partition plate 14 provided in the middle. The outer cover 5 is formed to have a small diameter so that the flange 5a fits into the front recess of the deflector cover 7, and the outer cover 5 has two guide plates 9A and 9A on the inner surface thereof.
9B is provided. One of them is an annular guide plate 9A provided at an eccentric position, the guide plate 9A is provided eccentrically in the same direction as the connection port 6, and the other guide plate 9A is provided eccentrically in the same direction as the connection port 6.
B is arranged between the annular guide plate 9A and the connecting port 6 to form an intake gas guide path 15. 16 is a notch provided in the annular guide plate 9A ahead of the exit 15a of the guide path 15. Reference numeral 17 indicates a stopper for the deflector cover 7. Reference numeral 18 denotes a clean airflow outlet, which is opened at one or more locations on the peripheral surface of the rear end of the main body, and exhausts the airflow outward in the radial direction of the main body. In the illustrated case, the space between the rising portion of the rear plate 13 and the peripheral surface of the main body constitutes the exhaust port 31. Reference numeral 19 denotes a filter assembly, and a filter holder 20 is formed into a cylindrical shape with a hole 20a in the cylindrical surface made of paper, a thin synthetic resin plate, or the like.
and a filter 3 housed inside the filter 3. This filter 3 is formed by compressing a cylindrical filter medium such as filter paper or filter cloth in the axial direction of the cylinder and forming it into a substantially bellows shape. It has the characteristic of maintaining good dust absorption over a long period of time. The filter assembly 19 is detachably attached to a filter support 19A fixed to the partition plate 14.

In each figure, 21 is a drive motor equipped with a fan 22 that sucks airflow from a ventilation hole 14a opened in the partition plate 14, and 23 is a roughly U-tube-shaped dust meter, one end of which is attached to the main body 2c side. A gauge is installed on the other side via a spring that resists negative pressure. The number of motors 21 is not limited to two, but may be one, and in some cases may be provided outside the machine. 24
26 is a nozzle member provided with the slit-shaped nozzle 1, 27 is a substantially T-shaped nozzle member, 28 is a power cord, 29 is a switch, and 30 is the above-mentioned The display window of the dust meter 23 is shown.

(Operations and Effects) Since the present invention has the above-described configuration, the gas generated during welding is sucked through the suction nozzle 1, and is fed into the filter 3 through the suction hose 4, so that the clean air flow is It can be discharged from the exhaust port 31 to the outside of the machine. At this time, the suction gas flow collides with the deflector cover 7 immediately after flowing in from the connection port 6, so that the high-temperature solid slag and flaming spatter contained in the gas flow directly flow into the filter 3. The force of the collision with the deflector cover 7 causes the fire to be rapidly scattered and extinguished, and the guide plate 9 circulates between the covers 5 and 7 and transfers to the filter 3. The pleats can filter welding gas and finer solid slag in the fume. In particular, according to the present invention, the gas flow is extinguished in the deflector cover 7, allowing the primary recovery of coarse slag, preventing the risk of fire, and making recovery easy by attaching and detaching the cover, making cleaning easy and reliable. It has the effect of

[Brief explanation of the drawing]

The figures show an embodiment of the welding gas suction device according to the present invention, in which Fig. 1 is an overall perspective view, Fig. 2 is a perspective view of the cover and deflector cover, and Fig. 3 is a cutaway side view of the main part. . 1...Suction nozzle, 2...Main body, 3...Filter, 4...Suction hose, 5...Outer cover, 6...
... Connection port, 7 ... Deflector cover, 8 ... Through hole, 9, 9A, 9B ... Guide plate.

Claims (1)

[Scope of utility model registration request] A suction hose 4 that feeds gas generated during welding from a suction nozzle 1 into a filter 3 of a suction machine main body 2 is connected to an outer cover 5 removably provided on the main body 2. A connection port 6 is provided at an eccentric position of an outer cover 5, and a deflector cover 7 is provided oppositely at a constant interval inside the cover 5.
The deflector cover 7 is provided with a through hole 8 to the filter 3 at a position spaced apart from the connection port 6 in the eccentric position, so that the gas flow sucked from the connection port 6 goes directly to the through hole 8. A welding gas suction machine characterized in that a guide plate 9 is provided between the connection port 6 and the through hole 8 to prevent solid slag, spatter, etc. in the suction gas flow from colliding with each other.