JPS59150519A - Oil mist or dust removing apparatus - Google Patents

Abstract

PURPOSE:To enhance the separation efficiency of oil mist or the like, by scattering water droplets by supplying water to a rotor which is formed by securing blades to the surface of a disc while allowing gas accompanied by oil mist and dust to pass through the scattered water droplets. CONSTITUTION:Blades 48 are fixed to one surface of a disc 16 subjected to rotary driving around the horizontal axis thereof by a motor 17 so as to provide intervals in the peripheral direction of said disc 16. Water is supplied from a nozzle 21 through a pipeline 9 and scattered externally in the radius direction of said disc 16 at a high speed to form a water film to a passage 18 over the entire periphery thereof. Gas accompanied by oil mist and dust is introduced from an introducing port 19 and flowed through the water film formed in the passage 18 while oil mist and dust are separated while collided with water droplets. The purified gas is exhausted from a pipeline 18 and the water accumulated in a cover 32 is discharged from a pipeline 10.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for removing oil mist, dust, etc. from gas containing oil mist, dust, etc.

FIG. 1 is a longitudinal cross-sectional view of one embodiment of the present invention, and FIG. 2 is a cross-sectional view of the same as seen from the front. A casing 2 is provided approximately at the vertical center of the stand 1, and a water droplet removing means 3 is provided above the casing 2. A water tank 4 is provided below the casing 2 .

Gas containing oil mist, dust, etc. is guided from a pipe line 5 to a header 6, and from this header 6 is individually supplied to a pair of casings 2 via a pipe line 7. Inside the casing 2, oil mist and the like are removed, and the gas is dissipated toward the water droplet removing means 3 via the pipe line 8. Water is supplied into the casing 2 via a line 9 for the removal of oil mist.

Water used in the casing 2 to remove oil mist, dust, etc. is led to the water storage tank 4 via a pipe 10. Water stored in the water tank 4 is supplied to the pipe line 9 by a pump 11. The water removed by the water droplet removing means 3 is led to the water storage tank 4 via the pipe line 12. Oil floating in the water in the water storage tank 4 is stored in the drain tank 14 from the weir 13 and removed from the water.

FIG. 3 is a longitudinal sectional view of the casing 2. This casing 2 is provided with a disc 16 that rotates in a separation chamber 15 . This disk 16 is rotationally driven around a horizontal axis by a motor 17.

One surface of the disk 16 (i.e., the left surface in FIG. 3)
, vanes 48 are fixed at intervals in the circumferential direction of the disc 16. Periphery 57 of disk 16 and cover 32
An annular passage 18 is formed between the two. The casing 2 has an inlet 19 . Through this inlet 19, gas accompanied by oil mist, dust, etc. is introduced in the direction of arrow 20. The horizontal axis of the inlet 19 is parallel to the disk 16
coincides with the axis of A conduit 7 is connected to the inlet 19 . Water is supplied from the nozzle 21 via the pipe line 9 as described above. The axis of the nozzle 21 coincides with the axes of the inlet 19 and the disk 16.

The water supplied from the nozzle 21 contacts the surface of the rotating disk 160 and is blown away in the radial direction at high speed by the centrifugal force and by the action of the blades 48, so that water is filled in the passage 18. A film is formed all around. Gas containing oil mist and dust flows through a water filter formed in this passage 18, whereby the oil mist and dust collide with water droplets and are separated. The removed oil and the like are discharged downward as shown by the arrow 23, and are led together with the used water to the water storage tank 4 via the pipe 10 as described above. The gas from which oil mist, dust, etc. have been removed is discharged upward as shown by the arrow 24, and guided from the pipe line 8 to the water droplet removing means 3 as described above.

The casing 2 includes an inner cylinder 25, an outer cylinder 26 that concentrically surrounds the inner cylinder 25, and an end plate 27 that closes the rear ends of the inner cylinder 25 and the outer cylinder 26. An end plate 2 having a reservoir flow hole 28 that allows flow to flow in the direction of reference numeral 24.
9, an end plate 30 that closes the front end of the inner cylinder 25, and an integrated cover 32 that is flange-bonded to the end plate 29 to form a separation chamber 31 that separates oil mist, dust, etc. from gas. . A pipe line 8 is connected to the upper part of the outer cylinder 26. The pipe line 10 is connected to the lower part of the outer cylinder 26.

FIG. 4 is a front view of the end plate 29. Flow holes 28 are formed in the end plate 29 at intervals in the circumferential direction.

FIG. 5 is a front view of the disk 16 seen from the left side of FIG. The blades 48 extend in the radial direction of the disc 16 and are fixed at equal intervals in the circumferential direction of the disc 16. As clearly shown in FIG. 3, a through hole 33 is formed in the blade 48, and a net 34 is stretched and fixed in the through hole 33. In another embodiment of the present invention, the blade 48 has a through hole 33.
It is also possible to form a single plate-like body without forming a plate.

FIG. 6 is an enlarged sectional view of the vicinity of the center of the disk 16. Near the center of the disk 16, a disk-shaped reinforcing plate 35 is fixed to the surface on which the blade 48 is fixed. A boss 36 is fixed to this reinforcing plate 35. The rotating shaft 37 of the motor 17 is inserted into the shaft hole 38 of the boss 36 and fixed thereto.

FIG. 7 is an enlarged sectional view of the head 39 fixed to the tip of the boss 36. The head 39 consists of a conical part 40 and a right cylindrical shaft part 41. The shaft portion 41 extends around the boss 36 and is fixed to the boss 36.

The angle θ of the conical portion 40 is set to an angle at which the liquid supplied from the top of the conical portion flows smoothly into the disk 16. Nozzle 2
1 flows from the tip 42 of the conical section 40 along the surface of the conical section 40 and leaves the disc 16 with the reference numeral 43.
The flow is as shown in . In this way, water from the nozzle 21 can smoothly flow in layers on the surface of the disk 160.

8 is a simplified front view of the casing 2 of FIG. 3. FIG. Water is supplied to the nozzle 21 via the conduit 9 as described above. On the inner peripheral surface of the integral cover 32 of the casing 2, one baffle plate 44 to 47 is provided at a position that does not collide with the blade 48.
is formed. Arrow 48 indicates the direction of rotation of disk 16. The baffle plates 44 to 47 are formed to protrude into the separation chamber 31 at an angle with the circumferential direction of the cover unit 320. As a result, the water droplets scattered in the separation chamber 31 are returned to the disk 16 side and are scattered again.

During operation, when the motor 17 is driven, the disc 16 rotates,
Accordingly, a gas containing oil mist, dust, etc., as indicated by reference numeral 20, is drawn into the separation chamber 31.

At the same time, the gas changes its flow direction radially outward as shown by arrow 49, and passes through the passage 18 and the flow hole 2.
8 and is guided to the conduit 8 as indicated by the arrow 24. Conduit 9
Water is supplied from the nozzle 21. The water supplied to the head 39 moves radially outward on the surface of the disc 16 due to centrifugal force. The water on the disk 16 reaches the peripheral edge 57 of the disk 16 and is blown outward in the radial direction, thereby forming a water film around the entire circumference in the passage 18 in substantially the same plane as the disk 16. be done. When gas containing oil mist and dust flows through the water film in this passage 18, the oil mist and dust collide with water droplets and are separated over a wide particle size range. The scattering speed of the water droplets is selected to match the particle size distribution of the inhaled gas, so that oil mist, dust, etc. collide with the high-speed water droplets and are efficiently separated. The water that collided with the oil mist reaches the inner circumferential surface of the cover unit 32 and the disc 1
6. Move in the direction of rotation. At this time, it is returned radially inward by the action of the baffles 44 to 47. Therefore, disk 16
The water that is once scattered is brought to the center of the disk 16,
It is again scattered radially outward by centrifugal force.

Therefore, the water is used in circulation, and the flow rate supplied from the nozzle 21 may be small. Since the nozzle 21 has a straight tube shape, there is no risk of it being blocked by oil mist, dust, or the like. The water remaining within the cover unit 32 is guided to the conduit 10 as indicated by the arrow 23 as described above. Water particles contained in the gas discharged from the pipe line 8 are removed by the water droplet removing means 3. Water droplet removal means 3
is constructed by filling a casing 50 with a droplet treatment material 51. The water droplet treatment material 51 is supported by a wire mesh 52. A collision plate 55 is fixed to the bottom plate 53 of the water droplet removing means 3 by leg rods 54. The upper end of the conduit 8 is connected to the flow hole 56 formed in the bottom plate 53 . Therefore, the gas from the pipe 8 hits the collision plate 55 and is bent as shown by the arrow 67, thereby ensuring that the water droplets are removed by the water droplet treatment material 51.

As described above, according to the present invention, the gas containing oil mist, dust, etc. is made to flow through the water film formed by the water droplets flying at high speed, so that the oil mist, dust, etc. collide with the water droplets. is removed efficiently. Moreover, by appropriately discharging water after removing oil mist and dust particles, continuous stable operation can be continued for a long period of time, and maintenance work is not required frequently as in the prior art mentioned above. . Since the vanes are fixed to the disc, gas containing oil mist and dust is sucked in through the inlet of the casing, and
The fluid supplied from the nozzle can be reliably injected, improving maintenance efficiency for oil mist, dust, etc.

In the above-described embodiment, the casings 2 are provided in pairs, but according to the present invention, the casings 2 may be provided singly or in a large number in the shape of a beehive. be.

[Brief explanation of the drawing]

11 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a sectional view of the embodiment shown in FIG. Front view of end plate 29, fifth
The figure is a front view of the disk 16, FIG. 6 is an enlarged sectional view of the vicinity of the center of the disk 16, and FIG. 7 is a head 39 fixed to the boss 36.
FIG. 8 is a simplified front view of the casing 2. FIG. DESCRIPTION OF SYMBOLS 1...Stand, 2...Casing, 3...Water drop removal means, 4...Water tank, 16...Disc, 17...
・Motor, 18...i path, 19...inlet, 21.
... Nozzle, 31 ... Separation chamber, 48 ... Vane, 57
...Representative for peripheral areas Patent attorney Kei Nishi Part 4 Figure 5 Figure 6 A

Claims (1)

[Claims] A circular passageway is provided between a disk having blades fixed to one surface thereof at intervals in the circumferential direction, a driving means for rotationally driving the disk, and a peripheral edge of the disk. a casing that surrounds a disk and includes an inlet through which gas accompanied by oil mist and dust is supplied from the one surface side of the disk toward the center of the disk; A device for removing oil mist, dust, etc., comprising: a nozzle provided near the mouth of the disc for supplying liquid from the one front side of the disc toward the center of the disc.