JP6478337B2 - Mist / dust collector - Google Patents

Description

  The present invention prevents mist generated during cleaning of machine parts, fine dust such as chips and polishing scraps generated during machining of machine parts, and fine dust such as woodworking and plastic powder from being scattered around. The present invention relates to a collection device for collecting mist and dust.

  As a type of this type of mist / dust collection device, Japanese Patent No. 5701925 discloses an introduction chamber in which an air inlet is formed and a water injection nozzle is provided, and a mist / dust separation that communicates with the introduction chamber. And a mist / dust collection device having a tank comprising a recovery chamber that is connected to a mist / dust separation chamber and is provided with a drain discharge port and an air suction port connected to a turbofan. ing.

  In this mist / dust collection device, a rotary shaft that extends through the introduction chamber to the mist / dust separation chamber is provided in the tank, and the impeller is integrally assembled on the top of the rotation shaft, and the impeller is installed in the introduction chamber. Is arranged. In addition, the rotating brush is integrally assembled to the lower part of the rotating shaft, the swinging member is integrally assembled to the lower end portion of the rotating shaft, and the rotating brush and the swinging member are disposed in the mist / dust separation chamber.

  According to this mist / dust collection device, air in the tank is sucked from the air suction port by a turbofan, and air containing mist / dust is introduced into the introduction chamber from the air introduction port. The rotating shaft is rotated by applying water discharged from the nozzle to the impeller. Then, the air flowing into the mist / dust separation chamber is swirled by a rotating brush and a swing-off member, and the mist / dust is struck against the inner surface of the mist / dust separation chamber together with the water injected from the water injection nozzle by centrifugal force. Is separated from The air that has separated mist and dust in the mist / dust separation chamber is discharged from the air suction port of the recovery chamber to the outside of the tank, and the water containing the separated mist / dust is discharged from the drain discharge port of the recovery chamber to the outside of the tank. To be discharged.

Japanese Patent No. 5701925

  The conventional mist / dust collection device described above employs a laminated structure in which the introduction chamber, mist / dust separation chamber, and recovery chamber are stacked vertically, so the height of the device must be large. I don't get it. For this reason, the installation location is limited to a place with a high ceiling, and it is necessary to devise a device so that the device does not fall down during installation or transportation, and there is a problem that the installation cost and the transportation cost increase.

In addition, in the conventional mist / dust collection device, the rotating shaft with the rotating brush and swing-off member is rotated, so that the air flowing into the introduction chamber from the air introduction port strikes the impeller, and from the water injection nozzle The discharged water strikes the impeller.
However, when the water discharged from the water injection nozzle strikes the impeller, a part of the water becomes mist, so that a wet region wet with mist is formed near the air inlet. There has been a problem that dry dust adheres to the wet area and cannot be collected.

  In view of such problems, an object of the present invention is to provide a mist / dust collecting device capable of reducing the height dimension as much as possible. It is another object of the present invention to provide a mist / dust collecting device having excellent mist / dust collection efficiency.

The present invention
An inlet chamber with an air inlet and a water injection nozzle, a mist / dust separation chamber communicating with the inlet chamber, a mist / dust separation chamber, and a drain outlet and connected to the air suction mechanism Equipped with a tank consisting of a collection chamber with an air suction port,
A rotating shaft extending through the introduction chamber to the mist / dust separation chamber is provided in the tank,
Assembling the impeller integrally with the upper part of the rotating shaft, placing this impeller in the introduction chamber,
A rotating brush is integrally assembled to the lower part of the rotating shaft, a swinging member is integrally assembled to the lower end of the rotating shaft, and the rotating brush and the swinging member are arranged in the mist / dust separation chamber.
By sucking air in the tank from the air suction port with the air suction mechanism, air containing mist and dust is introduced into the introduction chamber from the air introduction port, and water is injected into the rotating brush with the water injection nozzle.
The air that flows into the introduction chamber strikes the impeller to rotate the rotating shaft, and the air that flows into the mist / dust separation chamber is swirled by the rotating brush and swing-off member to inject the mist / dust with centrifugal force. The water injected from the nozzle is struck against the inner surface of the mist / dust separation chamber and separated from the air,
In addition to discharging the air separated from the mist and dust in the mist / dust separation chamber from the air suction port of the recovery chamber to the outside of the tank,
A mist / dust collecting device configured to discharge moisture containing separated mist / dust from the drain outlet of the recovery chamber to the outside of the tank,
The recovery chamber and the mist / dust separation chamber have an inner / outer double cylinder structure with the recovery chamber as an outer cylinder and the mist / dust separation chamber as an inner cylinder housed in the recovery chamber,
The water injection nozzle is provided so as to inject water from the water injection nozzle to an intermediate position between the impeller and the rotating brush.

According to the present invention , the recovery chamber and the mist / dust separation chamber have an inner / outer double cylinder structure in which the recovery chamber is an outer cylinder and the mist / dust separation chamber is an inner cylinder housed in the recovery chamber. Therefore, the height dimension of the apparatus can be made as low as possible as compared with the structure in which the mist / dust separation chamber is stacked on the recovery chamber.

Further, since water is injected from the water injection nozzle to an intermediate position between the impeller and the rotating brush, it is possible to avoid the water injection from hitting the impeller. Therefore, water injection hits the impeller and mist is generated, thereby preventing a wet area from forming in the introduction chamber and preventing dry dust from adhering to the wet area and being unable to be collected. it can.

It is the partially broken front view of the mist and dust collection device concerning the example of the present invention. It is a side view which shows the same collection apparatus. It is an expanded sectional view showing the tank of the collection device. It is sectional drawing cut | disconnected from the 4-4 line | wire of FIG. It is a perspective view which shows the impeller of the same collection apparatus. It is a top view which shows the rotating brush of the collection device. It is a side view which shows the rotating brush of the same collection apparatus. It is explanatory drawing which shows the example of application of the same collection apparatus. It is explanatory drawing which shows the other example of application of the collection apparatus.

  The present invention will be described below with reference to the drawings. 1, 2 and 3 show a mist / dust collecting apparatus 10 according to an embodiment of the present invention. The collection device 10 includes a tank 20. The tank 20 includes an introduction chamber tank 21, a mist / dust separation chamber tank 22 and a recovery chamber tank 23.

  The introduction chamber tank 21 is formed of a cylindrical body that is open at both ends and is provided with a flange 21a at the open end. The upper end opening is covered with a lid 24, and the lid 24 is fixed to the flange 21a at the upper end with a bolt. . An air introduction port 21 b (see FIG. 3) is formed in the body portion of the introduction chamber tank 21. A water injection nozzle 25 is attached to the lower portion of the body portion of the introduction chamber tank 21 so as to face the inside of the introduction chamber tank 21, and is connected to the water injection pipe 27.

  A bearing unit 28 and an impeller 29 are assembled at the center of the introduction chamber tank 21. The bearing unit 28 includes a pair of upper and lower bearings 28a and is fixed to the lid body 24 with bolts 28b. The shaft 30 is rotatably supported by the bearing unit 28. The rotary shaft 30 extends through the introduction chamber tank 21 to an intermediate portion of the mist / dust separation chamber tank 22. As shown in FIGS. 4 and 5, the impeller 29 has eight blades and is assembled to the rotary shaft 30 so as to rotate integrally.

  The mist / dust separation chamber tank 22 and the recovery chamber tank 23 are an inner / outer double cylinder in which the recovery chamber 23 is an outer cylinder and the mist / dust separation chamber tank 22 is an inner cylinder accommodated in the recovery chamber tank 23. The cylindrical body 20A is connected to the flange 21c at the lower end surface opening of the introduction chamber tank 21 with a bolt. The mist / dust separation chamber tank 22 constituting the inner cylinder is open at both upper and lower end faces, the upper end face opening communicates with the introduction chamber tank 21, and the lower end face opening communicates with the recovery chamber tank 23 constituting the outer cylinder. . Three disk-shaped rotary brushes 33 are assembled to the rotary shaft 30 extending to the middle part of the mist / dust separation chamber tank 22 via the sleeve 31a and the bush 31b so as to rotate integrally with the rotary shaft 30. Arranged in the separation chamber 22. Further, a bowl-shaped swing-off member 35 is fixed to the distal end portion of the rotating shaft 30 with a nut 34 and is disposed in the mist / dust separation chamber 22.

  As shown in FIGS. 6 and 7, the rotating brush 33 has a structure in which a large number of brush pieces 33 b project radially on the outer periphery of a boss formed with a shaft hole 33 a for mounting on the rotating shaft 30. The water injection nozzle 25 provided in the introduction chamber tank 21 is arranged so that water can be injected into the middle position between the lower end of the impeller 29 and the uppermost rotary brush 33.

  A drain discharge port 23a is provided at the bottom of the recovery chamber tank 23, and a drain pipe 36 is connected to the drain discharge port 23a. An air suction port 23b is formed on the outer peripheral surface of the recovery chamber tank 23, and a turbo fan 37 is connected to the air suction port 23b. The turbo fan 37 includes a drive motor 37a. An exhaust silencer 37 c is attached to the exhaust pipe 37 b of the turbo fan 37. A drain discharge port 37d of the exhaust silencer 37c is connected to a water storage tank 38 described later via a drain pipe 37e.

  The tank 20 is installed above the water storage tank 38 by a column 39 standing on the water storage tank 38. A magnet separator 40 and a circulation pump 41 are installed on the upper surface of the water storage tank 38, and a recovery box 42 for iron-based fine dust is attached to the side surface. A caster 43 is attached to the bottom of the water storage tank 38. Since the water supply pipe 45 is connected to the water storage tank 38 via the ball tap 44, the water storage amount can be maintained at a constant water level. A water injection nozzle 25 attached to the introduction chamber tank 21 is connected to a circulation pump 41 via a water injection pipe 27. The drain discharged from the drain outlet 23 a of the recovery chamber tank 23 is introduced into the magnet separator 40 by the drain pipe 36 and then returned to the water storage tank 38.

The structure of the mist / dust collecting device 10 according to the present embodiment is as described above. The mist / dust collecting device 10 is generated when the mechanical device 101 is processed by the machining center 100 shown in FIG. The action when applied to the collection of dust such as chips, particularly iron-based fine dust will be described.
The closed space of the machining center 100 and the air inlet 21b of the collection device 10 are communicated with each other via a duct 102. When the collection device 10 is operated, the inside of the tank 20 is held at a negative pressure by the operation of the turbo fan 37, so that dust generated during processing of the machine part 101 is introduced into the air inlet along with the surrounding air. It is sucked into the introduction chamber tank 21 from 21b. At the same time, the water in the water storage tank 38 is discharged from the water injection nozzle 25 into the introduction chamber tank 21 by the circulation pump 41.

  In the introduction chamber tank 21, the air flowing from the air introduction port 21 b collides with the impeller 29, the rotating shaft 30 rotates integrally with the impeller 29, and the rotating brush 33 fixed to the rotating shaft 30 rotates. The air and water that flow into the introduction chamber tank 21 flow into the mist / dust separation chamber tank 22, and the water is poured into the rotating brush 33. The air flowing into the mist / dust separation chamber tank 22 is subjected to a strong swirling action from the rotating brush 33 and the swing-off member 35. Therefore, dust and moisture in the air are struck by the centrifugal force against the inner surface of the mist / dust separation chamber tank 22 and separated from the air, and are transferred to the recovery chamber tank 23 through the inner surface of the mist / dust separation chamber tank 22. Descent.

  Water containing dust that has fallen to the recovery chamber tank 23 is introduced from the drain outlet 23a through the drain pipe 36 into the magnet separator 40, and the iron-based fine dust in the dust is magnetized by the magnet separator 40 (not shown). Is removed by adsorption and stored in the collection box 42.

  According to the mist / dust collecting apparatus 10 according to the present embodiment, the recovery chamber tank 23 and the mist / dust separation chamber tank 22 are used as the mist / dust separation chamber tank 22 with the recovery chamber tank 23 as an outer cylinder. Since the inner and outer double cylinders 20A are used as the inner cylinder stored in the recovery chamber tank 23, the mist / dust separation chamber tank 22 is stacked on the recovery chamber tank 23 as much as possible. The height of the device can be reduced.

  Since water is injected from the water injection nozzle 25 to an intermediate position between the impeller 29 and the rotary brush 33, it is possible to avoid water injection from hitting the impeller 29. Therefore, water injection strikes the impeller 29 and mist is generated, thereby preventing a wet area from being formed in the introduction chamber tank 21, and dry dust adheres to the wet area and cannot be collected. Can be prevented.

  Next, as shown in FIG. 9, the coolant liquid used as a coolant is generated when the mist / dust collecting device 10 according to the embodiment is machined with a machine tool 110 to vaporize a coolant component. The case where it applies to the collection of mist is demonstrated. In this application example, the air introduction pipe 21 b of the mist / dust collecting device 10 and the closed space of the machine tool 110 are communicated with each other by a duct 111. The magnet separator 40, the recovery box 42, and the circulation pump 41 of the mist / dust collecting device 10 are omitted, and the water injection nozzle 25 is connected to the coolant pump 114 via the coolant supply pipe 112, the on-off valve 113, and the water injection pipe 46. It is connected. The coolant pump 114 is installed in the coolant tank 115. Further, the drain discharge port 23a of the recovery chamber tank 23 is connected to the coolant tank 115 via the drain pipe 47, and the drain discharge port 37d of the exhaust silencer is connected to the coolant tank 115 via the drain pipe 37e.

  In this application example, mist is sucked into the tank 20 together with air from the closed space of the machine tool, the mist is separated from the air in the mist / dust separation chamber 22, and the drain containing the separated mist is coolant from the recovery chamber tank 23. While returning to the tank 115, drain is returned from the exhaust silencer 37c to the coolant tank 115. In this application example, since air is mixed into the coolant during operation, the dissolved oxygen concentration in the coolant increases, and the growth of spoilage bacteria (anaerobic microorganisms) can be suppressed and the generation of malodor can be prevented.

DESCRIPTION OF SYMBOLS 10 ... Mist / dust collection apparatus 20 ... Tank 20A ... Inner / outer double cylinder 21 ... Introduction chamber tank 21b ... Air introduction port 22 ... Mist / dust separation chamber tank 23 ... Recovery chamber tank 23a ... Drain discharge port 23b ... Air suction port 25 ... Water injection nozzle 29 ... Impeller 30 ... Rotating shaft 33 ... Rotating brush 35 ... Swing member 37 ... Turbo fan

Claims (1)

An inlet chamber with an air inlet and a water injection nozzle, a mist / dust separation chamber communicating with the inlet chamber, a mist / dust separation chamber, and a drain outlet and connected to the air suction mechanism Equipped with a tank consisting of a collection chamber with an air suction port,
A rotating shaft extending through the introduction chamber to the mist / dust separation chamber is provided in the tank,
Assembling the impeller integrally with the upper part of the rotating shaft, placing this impeller in the introduction chamber,
A rotating brush is integrally assembled to the lower part of the rotating shaft, a swinging member is integrally assembled to the lower end of the rotating shaft, and the rotating brush and the swinging member are arranged in the mist / dust separation chamber.
By sucking air in the tank from the air suction port with the air suction mechanism, air containing mist and dust is introduced into the introduction chamber from the air introduction port, and water is injected into the rotating brush with the water injection nozzle.
The air that flows into the introduction chamber strikes the impeller to rotate the rotating shaft, and the air that flows into the mist / dust separation chamber is swirled by the rotating brush and swing-off member to inject the mist / dust with centrifugal force. The water injected from the nozzle is struck against the inner surface of the mist / dust separation chamber and separated from the air,
In addition to discharging the air separated from the mist and dust in the mist / dust separation chamber from the air suction port of the recovery chamber to the outside of the tank,
A mist / dust collecting device configured to discharge moisture containing separated mist / dust from the drain outlet of the recovery chamber to the outside of the tank,
The recovery chamber and the mist / dust separation chamber have an inner / outer double cylinder structure with the recovery chamber as an outer cylinder and the mist / dust separation chamber as an inner cylinder housed in the recovery chamber,
A mist / dust collecting device characterized in that a water injection nozzle is provided so as to inject water from the water injection nozzle to an intermediate position between the impeller and the rotating brush .

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