JP2019122914A - Dust collector pretreatment device - Google Patents

Abstract

To provide a dust collector pretreatment device capable of extinguishing a kindling source contained in a gas as pretreatment of the gas containing the kindling source which is sucked to the dust collector and is generated on machine work.SOLUTION: A dust collector pretreatment device includes a box-shaped casing 12, a suction port 20 and an exhaust port 22 provided on an upper surface of the casing 12, a sucking pipe 24 which is communicated with a casing 12 interior and is elongated downward from the suction port 20, a water storage tank 14 provided on a lower part in the casing 12, a partition plate 16 which is provided on the upper side of the water storage tank 14 and has a plurality of through-holes 30, a collision plate 18 which is provided on the upper side of the partition plate 16 and an exhausting pipe 26 which is communicated with the casing 12 interior and is provided on the exhaust port 22. Therein, an ejection port 28 of the sucking pipe 24 has a direction opposite to a water level located in the water storage tank 14, is arranged on a position which is the upper side than the water level and the lower side than the partition plate 16, and gas sucked from the suction port 20 is delivered toward the water level, thereafter, is elevated, passes through the through-hole 30, is brought into collision with the collision plate 18 and, at the same time, goes to the exhaust port 22.SELECTED DRAWING: Figure 2

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a dust collector pretreatment apparatus that performs pretreatment of a gas containing a heat species generated by machining which is sucked into a dust collector.

  In addition to working in a room where dust such as various types of dust is present, a dust collector is used when performing machining such as welding or cutting. The dust collector sucks gas (hereinafter gas to be treated) including dust and welding fumes from the air intake port, collects the dust with a filter, separates and removes it, and discharges the air from which the dust etc was separated from the exhaust port Do. Dust collectors are of dry type and wet type, and dry type uses dust filters and collision plates to collect dust and welding fumes, etc. Water type uses water and is used to extinguish fires and dust particles that become fire species such as welding fumes. It is what collects. Patent Document 1: Japanese Patent Application Laid-Open No. 2007-736 discloses a wet type dust collector that collects water by generating water droplets or mist.

Japanese Patent Application Publication No. 2007-736

  In the wet type dust collector described in Patent Document 1, the gas to be treated sucked from the side of the dust collector comes in contact with the water surface to generate fine water droplets or mist, thereby extinguishing. However, if the gas is sucked and discharged from the side of the dust collector, or if the gas inlet and outlet are directed to the side, the gas does not directly collide with the water surface, but the inner wall of the guideway guides the gas, the collision plate, etc. And collide with the water surface. For this reason, in the configuration as shown in Patent Document 1, there is a problem that the fire extinguishing ability of the dust collector is low, and the gas to be treated including the fire type may be discharged without being extinguished or may be ignited inside the dust collector. In addition, if the gas is sucked from the side of the dust collector, the flow path of the gas becomes complicated and the apparatus becomes large. In addition, since a ridge is provided where collected water droplets gather, the dust collected by the droplets is stored in the ridge and dried, and the dust remaining in the ridge is the gas to be treated whose fire species remain without being able to extinguish. There is a risk that the dust collector itself may have heat or ignite inside the dust collector.

  Therefore, the present invention has been made to solve the above-mentioned problems, and the purpose of the present invention is to extinguish fire species contained in the gas as pretreatment of gas which is sucked by a dust collector and generated by machining. It is providing the dust collector pretreatment device which can

  In order to achieve the above object, the dust collector pretreatment device of the present invention has the following configuration. That is, the present invention is a dust collector pretreatment apparatus for pretreating a gas containing a type of fire generated by machining that is sucked into a dust collector, comprising: a box-shaped casing; and an air inlet provided on an upper surface of the casing. And an exhaust port, an intake pipe communicating with the inside of the casing, provided at the intake port, and extending downward from the intake port, a water reservoir provided at a lower portion in the casing, and the water reservoir A partition plate provided at the upper side and having a plurality of through holes, a collision plate provided above the partition plate, and an exhaust pipe communicating with the inside of the casing and provided at the exhaust port, The discharge port of the intake pipe is directed to face the water surface in the water storage tank, and is disposed above the water surface and below the partition plate, and is sucked from the air intake port. The gas rises after being delivered to the water surface, While through the serial holes collide with the collision plate, characterized in that toward the exhaust port. According to this configuration, the gas to be treated flows directly from the air inlet to the vicinity of the water surface of the water storage tank and contacts the water surface, and the fire species directly collide with the water surface, extinguishing the fire species contained in the gas to be treated reliably can do.

  In the present invention, a gap is provided between the outer edge of the collision plate and the inner wall of the housing. According to this, it is possible to form a gas flow path from the center to the outside in the housing, bring a large amount of gas into contact with the inner wall on the side of the housing, and drop water droplets contained in the gas. it can.

  In the present invention, the outer edge portion of the collision plate is provided with a bent portion formed by being bent downward. According to this, after the gas comes in contact with the water surface, the gas containing the water droplet rises, contacts the collision plate, and can contact the bent portion to drop the water droplet, so the water droplet is discharged from the exhaust port To prevent that. At the same time, since the water droplets do not stay but fall, cold fire species and dust contained in the water droplets do not remain in the bent portion, and it is possible to prevent ignition to the cold fire species and dust.

  In the present invention, the exhaust pipe extends downward from the exhaust port, and the inlet of the exhaust pipe is directed downward, protrudes into the housing, and is higher than the collision plate. According to this, the gas containing the water droplet which did not fall at the collision plate or the bending portion can contact the outer peripheral surface of the exhaust pipe to drop the water droplet, and the water droplet comes into the exhaust pipe Can be prevented.

  In the present invention, a water supply port communicating with the water storage tank and the casing is provided on the side surface of the water storage tank below the discharge port of the suction pipe. According to this, even if water is supplied from the water supply port, the water surface does not come above the discharge port of the intake pipe, and the height of the water surface can be adjusted. Then, it is possible to adjust the water surface height (the amount of water) sufficient to cause the treated gas to collide from the discharge port of the intake pipe and extinguish the fire type, and to adjust the amount of the water soaring.

  ADVANTAGE OF THE INVENTION According to the dust collector pre-processing apparatus which concerns on this invention, the fire type contained in the said gas can be extinguished as pre-processing of gas which is attracted | sucked by a dust collector and which generate | occur | produces the fire type generate | occur | produced by machining.

It is the schematic (perspective view) which shows the example of the dust collector pre-processing apparatus which concerns on embodiment of this invention, and is an external appearance of a dust collector pre-processing apparatus. It is the schematic (perspective view) which shows the example of the dust collector pre-processing apparatus which concerns on embodiment of this invention, and is a partially transparent view. It is the schematic (front view) of the dust collector pre-processing apparatus of FIG. It is the schematic (side view) of the dust collector pre-processing apparatus of FIG. It is sectional drawing seen from the back side in the AA of FIG. 4 of the dust collector pre-processing apparatus of FIG. It is the schematic (perspective view) of the dust collector pre-processing apparatus of FIG. 1, and is the state which isolate | separated the water storage tank from the dust collector pre-processing apparatus.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 and 2 show perspective views (schematic views) as a configuration example of the dust collector pretreatment device 10 according to the present embodiment, FIG. 1 shows an appearance of the dust collector pretreatment device 10, and FIG. . In addition, the flow of gas is shown by the arrow of a dotted line in FIG. 1, FIG. FIG. 3 shows a front view (schematic view), FIG. 4 shows a side view (schematic view), and FIG. 5 shows a cross-sectional view seen from the back of the line AA in FIG. In FIG. 6, the perspective view (schematic view) of the state which isolate | separated the water storage tank 14 from the dust collector pre-processing apparatus 10 is shown. In all the drawings for describing the embodiments, members having the same function are denoted by the same reference numerals, and repeated description thereof may be omitted.

  The dust collector pretreatment apparatus 10 according to the present embodiment is an apparatus for performing pretreatment of a gas to be treated. The to-be-treated gas is sucked into the dust collector pretreatment device 10 to pre-treat the to-be-treated gas, and the pretreated gas is discharged from the dust collector pretreatment device 10 and sucked into a dust collector (not shown). As described above, the gas to be treated is a gas containing dust generated during machining, welding fumes and the like.

  In the dust collector pretreatment apparatus 10 according to the present embodiment, a water storage tank 14, a partition plate 16, and a collision plate 18 are accommodated in a box-shaped casing 12. One intake port 20 and one exhaust port 22 are provided on the upper surface of the housing 12, and an intake pipe 24 and an exhaust pipe 26 are provided in each of which the outside air and the inside of the housing 12 communicate with each other. Further, the dust collector pretreatment device 10 according to the present invention is not provided with a motor or a fan, and the gas to be treated is sucked by the dust collector pretreatment device 10 by the suction force of the dust collector.

  The water storage tank 14 is at the lower part in the housing 12, and the water storage tank 14 contains water W in an amount such that the height from the lower surface of the water storage tank 14 to the water surface is h. The partition plate 16 is provided above the water storage tank 14, and the discharge port 28 of the intake pipe 24 faces the water surface in the water storage tank 14, is above the water surface, and is higher than the partition plate 16. It is disposed at the lower position. In addition, the dust collector pre-processing apparatus 10 of this embodiment shall be installed and used so that a water surface may become horizontal.

  The intake pipe 24 extends downward (vertically with respect to the water surface) vertically from the intake port 20, and the discharge port 28 of the intake pipe 24 has a distance d from the water surface to the discharge port 28 and is larger than the water surface. It is above. The shapes near the openings at both ends of the intake pipe 24 may extend outward in a tapered manner like a trumpet.

  The partition plate 16 has a plurality of through holes 30 as shown in the hatched portion in FIG. 1 (B). The partition plate 16 may be, for example, a punched metal plate, and the gas flows through the through holes 30. The size and number of the through holes 30 are not limited. However, the size of the through hole 30 is a size that does not significantly interrupt the flow of the gas including the water droplet when it passes. Furthermore, as shown in FIG. 2, the through holes 30 are provided at the center and the periphery of the partition plate 16 and are not provided near the outer edge, in consideration of the flow of gas, the side of the housing 12 It is preferable for the reason that a gas containing water droplets is brought into contact with the inner wall. The partition plate 16 is disposed in a positional relationship parallel to the upper and lower surfaces of the housing 12 and the water surface, and the inner wall on the side of the housing 12 and the outer edge portion of the partition plate are installed without any gap. The size of the partition plate 16 may be set so that the gap is eliminated, and the partition plate 16 may be sealed with a packing or the like. Further, the partition plate 16 is provided with an opening for passing the intake pipe 24 to the water storage tank 14, and the edge of the opening is provided so that a gap formed between the opening and the outer peripheral surface of the intake pipe 24 is eliminated. Sealed by packing etc.

  A collision plate 18 is provided above the partition plate 16. The collision plate 18 is a metal plate. The collision plate 18 is provided with an opening for letting the intake pipe 24 pass through the water storage tank 14, and the edge of the opening is made of packing or the like so that a gap formed between the opening and the outer peripheral surface of the intake pipe 24 is eliminated. Sealed with The collision plate 18 is disposed in a positional relationship parallel to the upper and lower surfaces of the housing 12 and the water surface. The area of the collision plate 18 is smaller than the area of the partition plate 16 in the direction perpendicular to the water surface. When the partition plate 16 and the collision plate 18 are viewed from the upper side in a direction perpendicular to the water surface, the through holes 30 of the partition plate 16 are blocked by the collision plate 18 and can not be seen. That is, the outer edge of the collision plate 18 is outside the outermost through hole 30. Further, the area of the collision plate 18 is equal to or larger than the total area of the through holes 30. Then, as shown in FIGS. 2 and 5, when the collision plate 18 is moved in the vertical direction on the partition plate 16, the through holes 30 are within the range of the collision plate 18 on the partition plate 16. . In other words, the collision plate 18 is in the direction perpendicular to the through hole 30 and the collision plate 18 has a contact surface to which the gas having passed through the through hole 30 can be brought into contact. The flow of gas is controlled by the size and arrangement of the through holes 30 and the collision plate 18 of the partition plate 16 as described above, and a gas containing a large amount of water droplets after collision with water flows directly to the exhaust pipe 26 Can be prevented. The rectangular collision plate 18 shown in FIGS. 2 and 5 has a size and an arrangement in which a gap is provided between all the outer edge portions and the inner wall of the housing 12. In addition, the collision plate 18 is axially supported from the lower surface of the collision plate 18 by a shaft support rod 32 which is inverted from the partition plate 16.

  The outer edge of the collision plate 18 is provided with a bent portion 34 which is formed to be bent downward. In particular, the shape of the bent portion 34 is preferably an L-shape which is perpendicular to the collision plate 18 at the lower side. As shown in the figure, bent portions 34 are provided on the four sides of the rectangular collision plate 18.

  The exhaust pipe 26 extends vertically downward from the exhaust port 22, and the inlet 36 of the exhaust pipe 26 projects downward into the housing 12 and is disposed at a position above the collision plate 18. Set up. Similar to the intake pipe 24, the shape near the openings at both ends of the exhaust pipe 26 may extend outward in a tapered manner like a trumpet.

  A water supply port 38 communicating with the water storage tank 14 and the housing 12 is provided below the discharge port 28 of the intake pipe 24 and on the side surface of the water storage tank 14. The distance d to the water surface and the height h from the lower surface of the water storage tank 14 to the water surface can be adjusted. Thereby, the to-be-treated gas can be more reliably brought into contact with water. When the distance d is short, the amount of water to be treated and brought into contact with the gas to be treated is increased, the water is easily discharged from the exhaust port 22, and the water in the water storage tank 14 is easily reduced. In addition, when the distance d is long, it is difficult to extinguish the fire species in the gas to be treated. Further, if the height h is low and a sufficient amount of water is not stored in the water storage tank 14, the fire type can not be sufficiently extinguished in the water storage tank 14, and the fire type collides with the partition plate 16. Besides, the amount of water can be confirmed. A confirmation window 40 and a drainage port 42 for draining the water in the water storage tank 14 out of the housing 12 are provided.

  The intake port 20 and the exhaust port 22 are provided on the upper surface of the housing 12, and the intake pipe 24 and the exhaust pipe 26 extend downward in the vertical direction in the housing 12 to directly cover the water surface. Process gases can be contacted. At the same time, a to-be-treated gas flows downward from the top and a reciprocal flow of discharging the gas upward from the bottom is formed, and the lateral movement distance of the air is shortened. The installation area of the apparatus can be reduced and space can be saved as compared with the conventional dust collector pretreatment apparatus to be exhausted.

  The flow of the gas sucked and discharged by the dust collector pretreatment apparatus 10 of the present embodiment will be described. First, the gas to be treated goes downward and comes in contact with the water surface of the water storage tank 14 from the air inlet 20 through the air intake pipe 24. That is, the fire species in the gas to be treated directly collide with the water surface. At this time, the surface of the water waves up with the force of the gas, and at the same time, the fire species contained in the gas can be taken into the water and extinguished.

  The water droplets soaring due to the force of gas contact and the gas after extinguishment flow upward toward the exhaust pipe 26. On the way to the exhaust pipe 26, it passes through the through hole 30 of the partition plate 16. On the other hand, water droplets contained in the gas that has collided with the lower surface of the partition plate 16 without passing through the through holes 30 and dust and welding fume contained in the gas after extinguishment fall into the water storage tank 14.

  As described above, the outer edge of the collision plate 18 is on the outer side than the outermost through hole 30, so that the flow of gas can be controlled. The gas that has passed through the through holes 30 collides with the collision plate 18 to change the flow of the gas, flows along the lower surface of the collision plate 18, and then flows downward along the bent portion 34. By providing the bent portion 34 by causing the collision plate 18 to collide, even if the fire species remain in the gas, it is possible to extinguish the fire, and the gas containing a large amount of fire species and water is directly discharged to the exhaust pipe 26 Prevent going. Further, by providing the bent portion 34, it is possible to drop the splashed water droplets, welding fumes and the like that can not be dropped into the water into the partition plate 16 and the water storage tank 14 along the downward flow of the gas. In addition, since the bent portion 34 is L-shaped, and the bent portion is not curved so that water droplets are stored, it is possible that water droplets or welding fumes causing ignition may be accumulated in the bent portion 34. Can prevent the ignition of dust etc.

  The gas dropped at the bent portion 34 flows toward and contacts the outer edge of the partition plate 16. Since the outer edge portion of the partition plate 16 is not provided with the through holes 30, the gas is reflected and directed upward. The upward gas can be directed along the inner wall of the housing 12. By providing the through holes 30 of the partition plate 16 at the center and the periphery without providing the through holes 30, the gas flow from the center to the outside in the case 12 can be formed, and a larger amount of gas can be obtained. Water droplets contained can be dropped by contacting the inner wall of the

  Next, the gas raised along the inner wall of the housing 12 flows along the upper surface in the housing 12 on the upper surface in the housing 12. Since the inlet 36 of the exhaust pipe 26 protrudes downward into the housing 12, the gas flowing along the upper surface in the housing 12 contacts the outer peripheral surface of the exhaust pipe 26. It falls and flows toward the inlet 36 of the exhaust pipe 26. At this time, by bringing the outer peripheral surface of the exhaust pipe 26 into contact, even if water droplets are contained in the gas, the water droplets contained in the gas can be dropped, and moisture can be removed from the air.

  As described above, the suction pipe 24 is brought close to the water surface, and the position of the through hole 30 of the partition plate 16, the position and size of the collision plate 18, and the shape of the exhaust pipe 26 are set. The fire species of the treated gas can be extinguished more reliably. Further, water can be removed from the gas containing a large amount of water after being brought into contact with water, dropped into the housing 12, and the gas not containing water can be discharged.

  The dust collector pretreatment apparatus 10 of the present embodiment can separate the housing 12. Fasteners 44 fasten the lower portion of the case 12 where the water storage tank 14 is provided and the upper portion of the case 12 where the partition plate 16 and the collision plate 18 are provided. By removing the fasteners 44 and separating the water storage tank 14, dust and cold seeds accumulated in the water storage tank 14 can be removed from the water storage tank 14 and cleaned.

  A hose can be connected to the intake pipe 24 and the exhaust pipe 26, and the hose can be brought close to a spot where welding fumes are generated for suction, and the pretreated gas can be discharged and sent to a dust collector.

DESCRIPTION OF SYMBOLS 10 Dust collector pretreatment apparatus 12 Housing | casing 14 Water storage tank 16 Partition plate 18 Impact plate 20 Intake port 22 Exhaust port 24 Pipe for intake 26 Exhaust pipe 28 Discharge port 30 Through hole 32 Shaft support rod 34 Bending part 36 Inlet 38 Water supply Port 40 Confirmation window 42 Drain port 44 Bracket W water

Claims (5)

A dust collector pretreatment device for pretreating a gas containing a heat species generated by machining that is sucked into a dust collector, comprising:
With a box-shaped case,
An inlet and an outlet provided on an upper surface of the housing;
An intake pipe communicating with the inside of the housing, provided at the intake port, and extending downward from the intake port;
A water storage tank provided at a lower portion in the housing;
A partition plate provided above the water storage tank and having a plurality of through holes;
A collision plate provided above the partition plate,
An exhaust pipe communicating with the inside of the housing and provided at the exhaust port;
The discharge port of the intake pipe is oriented to face the water surface in the water storage tank, and is disposed above the water surface and below the partition plate.
The gas drawn from the air intake port is raised toward the water surface and then rises, passes through the through holes, collides with a collision plate, and travels to the exhaust port.   The dust collector pretreatment device according to claim 1, wherein a gap is provided between the outer edge portion of the collision plate and the inner wall of the housing.   The dust collector pretreatment device according to claim 1 or 2, wherein a bent portion formed by being bent downward is provided at an outer edge portion of the collision plate.   The exhaust pipe extends downward from the exhaust port, and the inlet of the exhaust pipe is directed downward, protrudes into the housing, and is higher than the collision plate. The dust collector pretreatment device according to any one of claims 1 to 3.   The water supply port communicating with the water storage tank and the case is provided on the side surface of the water storage tank below the discharge port of the intake pipe, and the water supply port is provided. The dust collector pretreatment device according to any one of the preceding claims.

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