JPH08318118A - Dust collector for smoke in welding work or the like - Google Patents

Abstract

PURPOSE: To circulate purified air whose dust concentration is lower than that of a general atmosphere in a room and to improve air conditioning efficiency by partioning a vessel into an intake chamber and a discharge chamber by a partition member, making the intake chamber and the discharge chamber communicate with each other through water, and installing a filter in the discharge chamber. CONSTITUTION: Smoke S containing dust is passed through a filter 4 by suction force of a fan 15, and is passed through water 9 to remove most of the dust. Next, the smoke S sucked into a discharge chamber 8 and accompanied by water in mist splashed from a water surface collides against a scraping member 17 and a part thereof falls to the water 9, and the other part rises and is passed through a filter 18 and a mesh filter 19 and reaches the upper part of the discharge chamber 8. At this time, the remaining dust and water in mist are removed from the smoke S. The smoke S from which most of the dust has been removed reaches an electrostatic filter 24 to remove fine dust, and purifier air 25 whose dust concentration is lower than that of a general atmosphere is discharged into a room of a factory, and is circulated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flue gas dust collector for welding or the like which removes dust from flue gas containing dust generated in welding work, particularly arc welding work, to produce clean air.

[0002]

2. Description of the Related Art Conventionally, as a welding flue gas dust collector, FIG.
As shown in FIG. 3, the fan 100 sucks in the smoke exhaust 101 containing dust, and the dust 103 passing through the pre-filter 102 is first removed by passing through the pre-filter 102, and then the dust 103 passing through the pre-filter 102 is charged by the charging unit 104. 2. Description of the Related Art An electrostatic dust collector is known in which charged dust is collected in a dust collecting unit 105 to remove dust from smoke and obtain purified air 106.

Further, as shown in FIG.
The water 111 maintained at a predetermined level by the above is stored in the lower part of the container 112, and the container 112 is separated by the upper and lower partition plates 11.
3, 114 define an intake chamber 115 and an exhaust chamber 116, and a smoke 118 sucked into the intake chamber 115 by a fan 117 integrated with a motor 117 is introduced into the exhaust chamber 116 while passing through water 111 to remove dust. Further, the mist-like water is passed through the exhaust chamber 116 together with the smoke exhaust 101,
At that time, it is known that a plurality of baffle plates 119 meander, and mist-like water is captured by the baffle plates 119 and purified air 120 is discharged to the outside.

[0004]

In the former of those described in the prior art, as shown in FIG.
Since the particles of No. 3 may reach the dust collecting unit 105 in a burned state, there is a problem of giving off a strange odor due to burning.

Further, in the latter, as shown in FIG. 3, since the water level is maintained by the float 110, the reliability is low, and since the fan 118 integrated with the motor 117 is used, dust is accumulated on the motor 117. In addition, due to the method of removing dust by using a plurality of baffle plates 119, the baffle plate 1 can be prevented from being cracked due to dust accumulation due to long-term continuous use.
As shown in FIG. 19, the maintainability is poor, and since the exhaust gas concentration is higher than the general atmosphere, it cannot be exhausted and circulated indoors, resulting in poor air conditioning efficiency.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to exhaust purified air whose exhaust concentration is lower than that of a general atmosphere into a room for circulation. Therefore, the present invention is intended to provide a flue gas dust collector, such as welding, which can improve the air conditioning efficiency.

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a container for storing a liquid for passing dust and removing dust, and a liquid stored in the container at a liquid level of a predetermined level. A liquid supply means for supplying the exhaust gas, a partition member that forms an intake chamber that defines the container for taking in the exhaust gas, and an exhaust chamber that removes dust and the like from the exhaust gas and exhausts the purified air. A detachable filter disposed in the intake chamber and the exhaust chamber, a fan disposed in the exhaust chamber and sucking smoke exhausted by driving a motor installed outside the exhaust chamber to guide the smoke from the intake section to the exhaust section, An electrostatic filter installed in the exhaust unit is provided.

[0008]

[Function] Exhaust smoke containing dust is sucked into the intake chamber from the intake portion by the suction force of the fan, passes through the filter provided in the intake chamber, and part of the dust contained in the exhaust gas is removed by the filter. To be done. Next, when smoke is exhausted by the suction force of the fan into the liquid stored in the lower part of the intake chamber by the liquid supply means while being maintained at a predetermined liquid level, most of the dust contained in the smoke is removed, Further, the mist-like liquid is brought from the liquid surface facing the exhaust chamber to the exhaust chamber. Next, the smoke exhausted with the mist-like liquid splashed up from the liquid surface facing the exhaust chamber partially falls into the liquid stored in the lower part of the container on the exhaust chamber side, and the other part rises due to the exhaust force of the fan. The dust or mist-like liquid remaining after passing through the filter is removed from the smoke exhaust and reaches the upper part of the exhaust chamber. And
The exhaust force of the fan reaches the electrostatic filter, removes the remaining fine dust, and the purified air whose exhaust concentration is lower than that of the general atmosphere is discharged indoors.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a vertical cross-sectional view of a flue gas dust collector for welding or the like according to the present invention.

As shown in FIG. 1, a smoke exhaust dust collector 1 for welding, etc.
Is provided with a substantially box-shaped container 4 having an intake part 2 and an exhaust part 3 formed in the upper part thereof, and the container 4 is divided into an intake chamber 7 and an exhaust chamber 8 by an upper partition member 5 and a lower partition member 6. . The intake chamber 7 and the exhaust chamber 8 are the lower part of the container 4 and the upper partition member 5
And the lower partition member 6 communicate with each other at a position where they face each other. Then, since the water 9 is stretched to the position where the upper partition member 5 and the lower partition member 6 at the lower part of the container 4 face each other, the intake chamber 7 and the exhaust chamber 8
Are in communication with each other through water 9.

Further, a water tank 10 communicating with the lower portion of the container 4 storing water 9 is formed outside the container 4, and the water tank 1 is formed.
Water 9 is supplied to 0 by the liquid supply means 11. The liquid supply means 11 is a water supply device 1 provided with a valve (not shown).
2, a liquid level detector 13, a control unit (not shown), etc.,
The water level is detected by the liquid level detector 13, the liquid level detection signal is input to the control unit, and the valve is opened / closed by the control signal of the control unit.
Then, the amount of water supplied from the water supply device 12 is managed, and the water level of the water 9 stored in the lower portion of the intake chamber 7 is maintained at a predetermined level.

Further, in the space of the intake chamber 7, a filter 14 having a plurality of louvers 14a directed toward the water supply side of the water tank 10 is detachably arranged so as to be sandwiched between the container 4 and the upper partition member 5. There is. In the space of the exhaust chamber 8, a fan 15 and a silencer 16 formed of a plurality of baffle plates 16a are arranged in the vicinity of the exhaust unit 3, and a scraping member 17, a filter 18, a mesh are provided between the water surface and the fan 15. A filter 19 is provided. The filter 18 is configured to have a plurality of louvers 18a directed toward the partition plate 5 side.

The scraping member 17 is fixed to the upper partition member 5 with one end 17a inclined so as to be located above the other end 17b. Then, the other end 17b of the scraping member 17 and the upper end portion 6a of the lower partition member 6 restrict the passage of the smoke exhaust S. Further, the filter 18 and the mesh filter 19 are detachably attached so as to be sandwiched between the container 4 and the upper partition member 5.

The fan 15 is driven via a belt 21 by a motor 20 provided outside the container 4. The exhaust capacity of the fan 15 can be adjusted by replacing the pulley 22 attached to the rotating shaft of the motor 20.

Further, the exhaust unit 3 is provided with an electrostatic filter 24 via a pipe 23. Then, the flue gas S purified by passing through the water 9, the filter 18, and the mesh filter 19 passes through the silencer 16 only by the exhaust force of the fan 15, and then further passes through the electrostatic filter 24. The electrostatic filter 24 removes fine dust contained in the flue gas S, and the cleaned air 25 is discharged to the outside of the flue gas dust collector 1 such as by welding.

The operation of the flue gas dust collector 1 constructed by welding as described above will be described. Exhaust gas S containing dust generated in work such as arc welding is taken into the intake chamber 7 from the intake section 2 by the suction force of the fan 15.

Then, the flue gas S passes through the filter 14,
A part of the dust contained in the flue gas S is removed by the filter 14. Further, the smoke exhaust S enters the water 9 stored in the lower part of the container 4 by the suction force of the fan 15, and reaches the exhaust chamber 8 from the water surface facing the exhaust chamber 8 with mist-like water. As the smoke exhaust S passes through the water 9, the smoke exhaust S
Most of the dust contained in is removed. Here, the water level of the water 9 stored in the lower part of the intake chamber 7 is the liquid supply means 11
Is maintained at a predetermined level by.

Exhaust smoke S accompanied by mist-like water that is sucked into the exhaust chamber 8 and splashed up from the water surface facing the exhaust chamber 8 is
A part of it collides with the scraping member 17 and drops into the water 9 stored in the lower part of the container 4 on the exhaust chamber 8 side, and the other part rises by the fan 15, passes through the filter 18 and the mesh filter 19, and passes through the exhaust chamber 8. To the top of. By passing through the filter 18 and the mesh filter 19, dust or mist-like water that remains even after passing through the water 8 is removed from the flue gas S.

The flue gas S from which most of the dust has been removed reaches the electrostatic filter 24 through the silencer 16 by the exhaust force of the fan 15. The electrostatic filter 24 removes the remaining fine dust, and discharges the purified air 25 having an exhaust concentration lower than that of the general atmosphere into the inside of the factory where work such as arc welding is performed.

The electrostatic filter 24 sucks the flue gas S by the exhaust force of the fan 15, and similarly to the case shown in FIG. 2, the flue gas S containing fine dust is passed through the pre-filter so that the dust is first roughly filtered. The dust that has passed through the pre-filter is charged by the charging section after the removal, and the charged dust is collected in the dust collecting section to obtain the purified air 25 from the flue gas.

[0021]

As described above, according to the present invention, purified air whose exhaust concentration is lower than that of the general atmosphere is circulated indoors so that it contributes to the air cleaning of the entire indoor.
Further, since the purified air is exhausted indoors, the air pressure in the room does not drop, and the air conditioning efficiency can be further improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a flue gas dust collector for welding, etc. according to the present invention.

FIG. 2 is an explanatory diagram of a conventional electrostatic dust collector.

FIG. 3 is a vertical sectional view of a conventional welding flue gas dust collector.

[Explanation of symbols]

1 ... flue gas dust collector for welding, 2 ... intake part, 3 ... exhaust part, 4
... container, 5 ... upper partition member, 6 ... lower partition member, 7 ... intake chamber, 8 ... exhaust chamber, 9 ... water, 11 ... liquid supply means, 12
... Water supply device, 13 ... Liquid level detector, 14, 18, 19 ... Filter, 15 ... Fan, 20 ... Motor, 24 ... Electrostatic filter, S ... Smoke exhaust.

Claims (1)

[Claims] 1. A container for storing a liquid for passing dust and removing dust, liquid supply means for supplying the liquid stored in the container at a liquid level of a predetermined level, and defining the container. And a partition member that forms an exhaust chamber that removes dust and the like from the smoke and discharges purified air, and a removable filter that is disposed in the intake chamber and the exhaust chamber. A fan disposed in the exhaust chamber and driven by a motor installed outside the exhaust chamber to suck smoke and guide the smoke to the exhaust unit; and an electrostatic filter installed in the exhaust unit. A smoke exhaust dust collector that features welding.