JPH0363407B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a wet separator such as an outlet from a process space such as a spray paint booth, particularly a separator formed such as a bench lily outlet under the floor of a paint booth; The present invention relates to a method for purifying conditioned air contaminated by a type of wet separator.

It is already known to use one or more bench lilies as an exit from a spray painting booth for spray painting car bodies, for example. Bench lilies are installed directly under the lattice floor or at some intervals as appropriate, and the dirty conditioned air flows through these bench lilies in a concentrated manner, collecting paint particles that can be easily disposed of in the next separation process. The air velocity increases enough to cause this effect. In accordance with normal practice, the water is circulated through the bench lilies throughout the gridded floor so that it is not stopped by the paint. The water is then conveyed through a collection chamber, from where it is recirculated to a storage tank or another storage tank below the floor. Also, the air can be recirculated in whole or in part.

In general, such known solutions work well to remove contaminants, but the equipment is difficult to clean and produces loud noises that are very bothersome.
Modifications that reduce noise increase the difficulty of cleaning, and vice versa. This is because it is difficult to clean devices that have a large noise reduction effect as a rule, and vice versa, and devices that can be easily cleaned generally generate a very high noise level. Equipment that produces less noise and suffers from ease of cleaning can be noisy enough to be a nuisance to workers who must spend time in ventilated spray painting booths or other work areas.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a wet separator that generates less noise, has an improved ability to separate contaminants, and is easier to clean and maintain. Another object of the invention is to improve the art in various respects, such as to improve the ability to reuse air and overflow liquids to save energy.

These objects are achieved in accordance with the present invention by providing an improved wet separator of the type described above. Experiments have shown that under the same operating conditions, a wet separator of conventional design exhibits a noise value of approximately 82 decibels, and that a wet separator according to the present invention significantly reduces this noise value. has been done. Even a small reduction in decibel values must be considered a substantial improvement, as it represents a great deal of peace of mind for workers in paint booths and other work areas.

In FIG. 1, reference numeral 1 designates an object conveyed by a conveyor 2, such as a car body 3, to a coating device 4.
1 shows a painting booth 1 for spray painting. This painting booth 1 has a grid-like floor 5.

The ceiling 6 of the paint booth 1 is preferably perforated, but alternatively it is provided with a filter layer over its entire width, which allows the air curtain 8 to have a higher velocity than the partial air flow 29 passing through the holes in the ceiling 6. Air nozzles 7 can be provided for forming a spool of air, the air flow 29 being able to vary between the operator areas on both sides of the coating booth 1 and the processing area in the center of the coating booth 1.

An intake bridge 9 is provided above the ceiling 6, and in close proximity to this intake bridge 9 a filter and a distribution device 10 for the incoming air flow 12 can be provided, as well as a fan 13 and a suitable temperature setting/humidity control device 14. An inflow air stream 12 can enter via a duct 11 having a duct 11 . In FIG. 1, a further preferred illumination device 15 is provided.

There is a storage tank 16 for liquid overflow under the floor 5,
It is preferably provided along both sides of the paint booth 1 and extends below the main part of the floor 5. Storage tank 1 like this
As an alternative to 6, it is possible to provide a liquid container in the form of an inclined surface that slopes towards the center and is constantly filled with liquid. In either case, overflow liquid is normally supplied by a supply pipe 17 extending from a pump 18 connected to a sump 19 supplied from a drain trap 20. Appropriate chemicals can be added to the water to break down or emulsify the paint.
This reduces or eliminates pasty properties.

Below the storage tank 16 and the inclined surface of the container is a separation chamber 21 for treating the air flow 22 contaminated with paint particles.
This air flow 22 flows into the separation chamber 21 through the bench lily 30. A rebound wall 24 faces the discharge flow from the bench lily 30 and a wall 26
The air is directed towards an outlet 25 of the air outlet 25 where it is discharged as a discharge air stream 23. A sloped bottom wall 27 is provided in the separation chamber 21 to collect liquid and contaminant particles separated from the air within the separation chamber 21. Another bottom wall 28 slopes in the opposite direction to the bottom wall 27 and discharges the separated liquid and contaminants into the drain trap 20.

FIG. 1 shows a bench lily 30 having an asymmetrical construction; symmetrical constructions are well known. With this asymmetrical construction, the outlet portion of the bench lily 30 is offset from the center plane, directing the airflow in one direction off the center plane. In a symmetrical construction, the outlet of the bench lily can preferably emit downwardly against the rebound plate or outwardly towards either side of the central plane. Selection of such structure can be made according to factors such as available space and environment. Although only an asymmetric structure is shown in the illustrated embodiment, the invention is applicable to both structures. When applying members corresponding to symmetrical structures, it is not necessary to be truly symmetrical, but to make members on one side longer or shorter than the other side with respect to the axis of symmetry, and with different angles of inclination. can be done within the skill of the art.

Conventional outlet constructions therefore have the drawbacks mentioned in the beginning of this document, namely a relatively high noise production combined with the risk of settling of paint particles, especially in the inlet section of the bench lily 30, and in this case. This makes it difficult or impossible to fit the separation chamber into existing facilities and requires a large amount of space for the separation chamber connected to the bench lily.

FIG. 2 shows the auxiliary floor portion of the paint booth 1, with an overflow liquid storage tank 16 having a pair of receptacles or pockets along the side edges of the auxiliary floor in which overflow liquid is stored. , flows on upwardly directed overflow surfaces of imperforate walls 31, 32 which are below the floor 5 and converge at mutually downward slopes on opposite sides of the central plane of the first outlet 46. In this case, the center plane 51 of the outlet 46 coincides with the longitudinal center plane of the coating booth. The sloping walls 31, 32 terminate approximately at the same level at the outlet 46 and are joined by a rounded outlet side wall 33 and a straight side wall 34, respectively. The rounded sidewalls 33 are convex and curved toward the central plane 51, but are spaced a distance from the central plane 51. As shown, side wall 33
Its lower end terminates at a large angle away from the central plane 51 and is directed downwardly at a slight angle.
The straight side wall 34 is at an angle of 30° to 40° with respect to the center plane 51.
The guide surface 35 is oriented at an angle between and ends adjacent to the central plane 51 below the curvature of the side wall 33 in a downwardly inclined guiding surface 35 . The guide surface 35 extends away from the center plane 51 in the same direction as the terminal end of the rounded side wall 33, and extends between the lower end of the side wall 33 and the guide surface 3.
5, forming an outlet neck 38 formed between the outlet neck 38 and the outlet neck 38. The outlet neck 38 is narrower than the spacing between the side walls 33, 34 and is relatively wide, as will be discussed more fully below. The curved side wall 33 forms a smooth transition from the overflow surface of the wall 31 via the outlet 46 to the outlet neck 38, and the side wall 34 and guide surface 35 surround the overflow surface to prevent the flow from splitting. Minimized. Beyond the outlet neck 38, the wall forming the guide surface 35 extends downwardly with an inclination of between 5 DEG and 45 DEG, preferably about 25 DEG relative to the horizontal plane. The extension of the guide surface 35 performs a function which will be explained in more detail later.

The outlet neck 38 is effective for discharging the mixture which flows through the outlet 46 into a dispersion chamber 40 formed between the wall 31 and the guide surface 35. Adjacent to the central plane 51 the dispersion chamber 40 is bounded by side walls 33 and on the outside by a vertical rebound wall 39, the lower end of which extends in the same direction as the wall 31 and in the opposite direction to the guide surface 35. It is connected to a bottom wall 41 having a facing inclined surface. Preferably, the slope of the bottom wall 41 lies in the range of 10° to 45° with respect to the horizontal plane, preferably about 20°. An outlet 47 is provided between the guide surface 35 and the bottom wall 41. The outlet 47 forms a second bench lily, for which the guide surface 35 terminates in a wall 43 which cooperates with the bottom wall 41 to direct the flow from the distribution chamber 40 to the outlet 47. and the outlet 47 is formed between the convexly curved wall 44 and a selectively disposed flange 42 projecting at right angles to the bottom wall 41 to provide a restricted throat 45 of the outlet 47 for the bench lily. is formed.

Beyond the bench lily throat 45, the bottom wall 41 continues straight into a sump 49 to collect fluid and contaminant particles emitted from the flow passing through the bench lily throat 45. Such particles are emitted in the usual manner. The remaining air, indicated by the arrow, is directed to the guide surface 35.
and below wall 32 toward an outlet (not shown) in the same manner as outlet 25 of the conventional structure described above.

It should be appreciated that the vertical length of the dispersion chamber 40 increases as the length from the central plane 51 increases resulting in a decrease in air velocity. The rebound wall 39 reverses the flow of air so that heavy particles of liquid and contaminants are deposited on the rebound wall 39 and these deposited particles are then directed along the rebound wall 39 toward the outlet 47, as shown by the arrows. flowing downwards,
It can be allowed to recombine with the flow through the throat 45 of the bench lily. The tapered outlet neck 38, which is the entrance to the dispersion chamber 40, creates a flow of arrow 48 that concentrates the mixture of liquid, air, and contaminants.
The stream 48 extends arcuately along the guide surface 35 and impinges against the rebound wall 39 at a position remote from the outlet neck 38 at a small impingement angle, resulting in a return to the second outlet 4 .
The flow in the part adjacent to 7 is dispersed and sprayed.

The arrangement shown in FIG. 2 ensures efficient achievement of the desired results in a wet separator of the type described. Since the first outlet 46 has a relatively wide free flow area and the second outlet 47 has a considerably smaller free flow area in the throat 45, the large The flow of air through the device is controlled by the basin to produce good results. The first outlet 46 forms a smooth transition from around the side wall 33 without sharp edges or protrusions into the air flow, and has a relatively wide discharge opening in the outlet neck 38, so that
The noise generation in this part of the separator is low, less than that in comparable conventional equipment in practice. A second outlet 4 formed by a flange 42
The restricted throat 45 of 7 causes a lot of noise generation due to the fast flow and large pressure drop in the throat 45. However, the increase in noise is achieved by highly efficient liquid atomization, which achieves separation of paint particles and other contaminants. Exit 47
is located away from the work area on the floor 5 of the painting booth 1 and is separated from the outlet 46 by the dispersion chamber 40, so that the noise generated at the exit 47 is transmitted to the paint booth 1, which is the work area where the workers work. I can't tell it inside. The atmosphere within the dispersion chamber 40 contains a large amount of liquid particles and contaminants, thereby forming a barrier to noise transmission through the dispersion chamber 40 .
This effect is higher near the outlet 47 due to the dispersed atomization of the stream 48 adjacent to the dispersion chamber 40, as described above.

The presence of a bench lily effect at the first outlet 46 increases the air velocity at this outlet 46, causing the walls 31, 3
2 to the outlet 46, air will carry the water droplets from the liquid film flowing from the outlet 46. This bench-lily effect mixes the water droplets with the contaminated air flowing through the outlet 46, allowing the water droplets to collect contaminated particles in the airflow. Bench lily throat 4 of second outlet 47
Since there is a large acceleration of the air flow due to the large restriction at 5, the water droplets carried to the second outlet 47 are almost as small as a mist, accounting for a very effective conveyance of the liquid at the second outlet 47. .

In this regard, it should be noted that approximately 90% of the contaminants are easily separated. The remaining 8% can be separated with difficulty, but the other remaining portions are of great concern. Considering the air flow rate,
The absolute amount of unseparated contaminants can be significant. Experiments have shown that the present invention is effective in removing these difficult contaminants and providing adequate noise damping and easy cleaning to maximize the overall effectiveness of the wet separator.

In connection with flow 48, it should be noted that the arcuate flow is due to a decrease in the velocity of the air flow such that as the distance from the exit neck 38 increases, the particle carrying air flow towards the guide surface 35 decreases. It is. When the flow is dispersed and the liquid is atomized by collision with the wall, the water and contaminant particles flow over the surface as indicated by the arrows, and the separated air and atomized liquid enter the dispersion chamber 40. It may bounce back inside. The guide surface 35 is therefore flooded with water particles separated from the air flow of stream 48.

Apparently, the impingement of the stream 48 causes the atomized water droplets to bounce off the guide surface 35 and into the second outlet 47.
This results in intense mixing of the air with nearby water droplets, paint particles, and other contaminants, and this mixture is flowed through outlet 47 to achieve effective separation, while at the same time
to the dispersion chamber 40 and from the dispersion chamber 40 to the outlet 46
A cover is provided which acts to attenuate the transmission of noise into the working space of the paint booth 1 through the paint booth 1. Thus, the present invention operates in opposition to increased noise production with improved transport of liquids and contaminants into the air stream in the throat 45 of the outlet 47. Also, the throat part 4
Since the angle of impingement of the stream 48 on the surface is small, the noise generation due to such an impingement is minimal compared to the noise that results when the stream impinges on a surface at a large angle of 90°, for example. It should be noted that For this purpose, guide surface 3
5 extends to interrupt the flow 48 and prevent it from directly impinging on the bottom wall 41 beyond the outlet 47.

A flange 42 is selectively positioned at the outlet 47 to allow adjustment of the flow area of the throat 45. Adjustment may be made by replacing the flange 42 with a larger or smaller width, or by tilting the flange 42 perpendicularly to the bottom wall 41 or adjusting its position relative to the opposing curved wall 44. obtain. This final outlet 47 adjustment may be based on, for example, the cessation of one or more operations or other changes within the work area that are required to alter the amount of ventilation exiting the work area through the outlet 36. This is suitable when the ventilation of the work area can be changed.

The invention also provides other advantages related to the separation of contaminants from air. In spray paint booths, it often happens that contaminants are concentrated in only one part of the paint booth. In conventional wet separators, the wet separators in heavily soiled areas of the floor are overused while the separators in less soiled areas are not used. In other words, the dirty flow through the outlet is neither homogeneous nor
It is also not evenly distributed. In the present invention, the dispersion chamber 40 is designed to produce a more homogeneous flow through the outlet 47 based on a high degree of separation and a more homogeneous purification of the air discharged through the outlet 47.
This allows non-homogeneous flow through the first outlet 46 to be well mixed within 0.

It should also be noted that solvents and emulsifiers that can be added to overflow liquids in areas of high contamination are subject to surface tension forces that quickly alter the ability of the flow to carry overflow liquids. These partial changes can be solved and evened out by the presence of the dispersion chamber 40 between the outlets 46, 47.

In the embodiment shown in FIG. 3, the overflow liquid reservoir 16 is replaced by the reservoir 16 of the prior art device shown in FIG.
The components are the same as shown in FIG. 2, except for the resemblance to . The storage tank 16 of this shape is the dispersion chamber 4
2, so that the increase in height of the dispersion chamber 40 as the distance from the central plane 51 increases is less than the increase shown in FIG. is also gradually increasing. In this case, the reservoir 16 becomes such that the overflowing liquid flows down the wall onto the curved side 33 and the flat side 34 of the outlet 46 where it is concentrated over the weir at the top of the outlet 46. The other parts of the apparatus are the same as shown in FIG. 2 and are numbered the same.

FIG. 4 shows another embodiment similar to that shown in FIG. 3, but modified to accommodate the auxiliary floor structure in a more confined space. The overflowing liquid storage tank 16 is the storage tank 16 in FIG.
It should be noted that it does not extend as deep near the side edges of the auxiliary floor structure. Storage tank 16
Below, the auxiliary floor structure does not extend the full width of the paint booth, so that the splash wall 39 is located approximately half the distance between the side of the paint booth and the central plane 51 of the outlet 46. There is. The wall 39 defines the outer limit of the dispersion chamber 40, and in shortening the dispersion chamber 40 the outlet 46 has been modified to provide a large free flow area. Therefore, the side walls 33, 34 of the outlet 46
The spacing therebetween is wider than that of the embodiment of FIG. 3, and the outlet neck 38 is similarly larger than the outlet neck of FIG. The large flow area is such that the flow 48 forms a short channel and the guide surface 35 close to the central plane 51
I feel like I'm running into this. The walls 43, 44 and the corresponding flange 42 are located beyond the point of impingement of the flow 48, so that the outlet 47 is close to the central plane 51. Preferably, the throat 45 of the outlet 47 has the same restricted flow path as the throat 45 of the embodiments described above. The short length streams 48 impinge near the outlet 47, thereby providing the necessary dispersion and atomization of the flow and the formation of a sound-absorbing cover at the outlet 47.

FIG. 4 shows an embodiment in which the bottom width of the coating booth is limited, and FIG. 5 shows an embodiment in which the bottom height of the coating booth is limited. In this embodiment of the invention, the overflow liquid reservoir 16 has a uniform depth from both sides of the paint booth to the outlet 46 on the central plane 51. The side parts 33, 34 are modified to reduce the height of the outlet 46, so that the guide surface 35 has a somewhat steeper slope than the rear part 37 which extends from the outlet neck 38 to the outlet formed by the throat 45. A front portion 36 is provided having a diameter. Since the throat 45 faces the exit neck 38,
It will be appreciated that the air flow within the dispersion chamber 40 is not deflected into S-shaped or Z-shaped passages as in the embodiments described above. A second outlet is formed by walls 43, 44 facing flange 42 at throat 45. The flange 42 is connected to the guide surface 3
5 projects upwardly from the bottom wall 41 extending beyond the flange 42. Since the flow 48 from the outlet neck 38 impinges against the guide surface 35 adjacent the throat 45 at a small impingement angle, dispersion and atomization are achieved near the second outlet, providing an effective noise damping cover. is provided in addition to the required mixing at the inlet of the second outlet. The bottom wall 41 is a reservoir 49
, in which case the outlet conduit 50 extends upwardly from the reservoir 49 .

FIG. 6 shows another embodiment in which the passage through the dispersion chamber is provided with a plurality of inversions. To this end, the wet separator of the invention cooperates with a series of outlets, the first and last being in the form of a bench lily to provide the required dispersion effect. The intermediate outlet serves to direct the flow to the first inversion section to facilitate initial separation of particles from the flow for collection and removal from the dispersion chamber before the flow passes through the final outlet.

In FIG. 6, a work area, which can be a paint booth 1, is provided with a grid-like floor and elevated passageways and supports above the floor. The auxiliary floor section of the working area of the paint booth 1 has a liquid reservoir 16 and inwardly sloping walls 31, 32, similar to the embodiment of FIG. Walls 31, 32 are the first of a series of exits.
are concentrated toward the exit 46. The outlet 46 is formed between the convergent side walls 33 , 34 and the guide surface 35 and has an outlet neck 38 at the end of the wall 33 . In this embodiment, the flange 3 to be selectively arranged
3' is provided in the outlet neck 38 to adjust the free passage area of the outlet neck 38 and to control the flow 48 produced by the flow through the outlet neck 38. As in the embodiment of FIG.
5 is 5° to 45° with respect to the horizontal plane, preferably about 25°,
is tilted downward at an angle of . The guide surface 35 extends beyond the outlet neck 38 by a considerable distance and has an upwardly curved free end which cooperates with a rebound wall 39 to provide a second outlet dividing into front and rear dispersion chambers 40, 40'. It ends at 35'. The bottom of the previous dispersion chamber 40 is designed as a reservoir 16';
It receives liquid and contaminant particles flowing downwardly along the rebound wall 39. Below the guide surface 35 a passage is formed to the subsequent dispersion chamber 40', and the upper wall 32
forms the overflow surface mentioned earlier. The rear dispersion chamber 40' increases in height with increasing distance from the central plane 51 and is provided with a central outlet 47 in the form of a bench lily, the overflow surface of which is the wall 31'. , 32' extend into a throat 45 formed between the walls 43, 44 of the bench lily and the flange 42 on the bottom wall 41. wall 3
1', 32' are used for the overflow liquid flowing from the storage tanks 16'' on both sides. Preferably, the walls 43 of the bench lily
are arranged at an angle of 10° to 60° with respect to the vertical plane and terminate in a convexly curved wall 44 opposite the flange 42. The bottom wall 41 extends into a sump 49 below an outlet conduit 50 from which purified air is discharged.

As in the previous embodiment, the first outlet 46 has a relatively large free flow area and the final outlet 47 has a significantly smaller free flow area. Dispersion chambers, in this case front and rear dispersion chambers 40, 40', are provided between the outlets 46, 47.

In this embodiment, the flow 48 discharged from the outlet neck 38 passes through the upwardly curved end 3 of the guide surface 35.
5', a sound-absorbing cover is formed near the outlet formed between the guide surface 35 and the rebound wall 39. The enlarged space of the combined dispersion chamber also forms a sound deadening chamber from the throat 45 of the final bench lily which passes through the dispersion chamber and returns to the working area of the paint booth 1.

The tortuous flow of air through the dispersion chamber can separate liquid and solid particles from the flow as it forms opposite bends in the path through the dispersion chamber. Particles separated from the flow as it turns around the guide surface 35 accumulate in a reservoir 16' from which they can be removed in the normal manner. The particles separated in the rear dispersion chamber 40' are deposited on the overflow walls 31', 32' and flow through the throat 45 over the bottom wall 41 into the sump 49. The upwardly curved end of the guide surface 35 ensures that the flow does not impinge directly on the reservoir 16' and avoids disturbances to the surface of the sump that would adversely affect the settling of contaminants in the reservoir 16'. I have to.

Reservoir 49 that can supply liquid to auxiliary storage tank 16''
The configuration of the reservoir 16', which can supply liquid to the primary reservoir 16 associated with the primary reservoir 16, allows for effective disposal of overflow liquid. Different liquid additions may be required to the overflowing liquid over each overflow surface to more effectively separate contaminants from the flow. Similarly, throat 4
It is known that fine atomization of liquid particles in No. 5 is achieved when the temperature of the overflow liquid is substantially lower than the temperature of the primary overflow liquid. The high velocity flow through the second bench lily creates a large pressure drop with maximum saturation of water vapor and air flow. The use of cold water facilitates condensation of the water as the stream expands in the outlet conduit 5, thereby further improving the separation of contaminants from the air.

The cold water at outlet 47 lowers the temperature of the discharged air, thereby reducing the water content of the air and effectively dehumidifying the discharged air. Dehumidification is particularly advantageous when air is circulated through the work area as shown in FIG. Before the air is reintroduced into the workplace, it must be filtered and warmed to the temperature required for the workplace. Heating in this case is performed by the condenser 52 of the cooling circuit 53 of the heat pump 56 and the evaporator 54 provided to cool the water in the sump 49 of the final vent mechanism. Conditioning of the recirculated air takes place in a conditioner 55, which has a filter and controls temperature and humidity by selective release or injection of air from the atmosphere.

While it is pointed out that it is necessary to avoid impingement of the flow 48 over the guide surface 35, noise is not an important factor and there are advantages to the formation of this type of elongated impingement.

The various embodiments illustrated herein are not limiting, and the features of the various embodiments can be combined with each other to suit the particular operating conditions experienced by the device. Although the series of outlets shown in FIG. 6 has only a first and last outlet in the form of a bench lily, it is within the scope of the invention to provide intermediate bench lily outlets which may have separate overflow mechanisms. Additionally, the final outlet configuration of FIG. 6 can also be used for the second outlet of the previously described embodiments.

Although specific embodiments of the present invention have been illustrated and described, the present invention is not limited to the above description, and various modifications and changes can be made within the scope of the claims.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional spray painting booth for spray painting automobile bodies with a conventional wet separator in the auxiliary floor of the painting booth, and Fig. 2 is a sectional view of a conventional spray painting booth for spray painting automobile bodies having an inclined water flow surface according to the present invention. separator 1st
FIG. 3 is a view similar to FIG. 2 showing a second embodiment of the separator according to the invention with a lateral water reservoir; 4 is a view similar to FIG. 2 showing a third embodiment of a separator according to the invention for particular use in restricted locations; FIG. 5 is a view similar to FIG. Figure 6 is similar to Figure 2 showing a fourth embodiment of a separator according to the invention for use;
The figure is a schematic sectional view of a spray coating booth having a fifth embodiment of a separator according to the invention in the auxiliary floor section. In the drawings, the same reference numerals indicate the same or equivalent members. 1: painting booth, 5: floor, 6: ceiling,
7: Air nozzle, 8: Air curtain, 13: Fan, 16, 16': Storage tank, 17: Supply pipe, 18:
Pump, 19: Sump, 20: Drainage trap, 2
1: Separation chamber, 24: Rebound wall, 25: Exit, 2
7: Bottom wall, 30: Bench lily, 31, 31', 3
2, 32': Wall, 33, 34: Side wall, 35, 3
5': Guide surface, 40, 40': Dispersion chamber, 42: Flange, 45: Throat, 46, 47: Outlet, 49:
Reservoir, 51: Central plane.

Claims (1)

[Claims] 1. First and second vent-shaped outlets for air;
means for supplying overflowing liquid to said first outlet, said first outlet comprising an elongated opening having sloped side walls converging inwardly toward a central plane;
One of the side walls has an outwardly convergent lower end as a lower extension of the inwardly convergent portion, and the first outlet intersects the central plane and forms an outlet neck of one of the side walls. a bottom wall extending below the lower end so that contaminated air and overflow liquid are mixed with each other and directed away from the central plane, the bottom wall ensuring mixing of the air and liquid in the neck; the neck has a first flange protruding from the bottom wall toward the lower end thereof, and a dispersion chamber for dispersion and muffling beyond the neck for receiving the mixture exiting the first outlet;
a top wall spaced above the neck so as to provide an enlarged area in the flow region for the mixture of air and liquid ejected through the neck, resulting in a reduction in the air velocity of the mixture; a lower wall formed by a bottom wall beyond the flange, the flow area of the dispersion chamber terminating at the second outlet, the second outlet receiving overflowing liquid; walls for directing the liquid towards the throat of the second outlet from both sides, and a wall within the throat so as to form an outlet opening in the throat by a free passage smaller than the neck of the first outlet; a second projecting flange, the second flange directing overflow liquid into the flow through the throat and creating an enlargement of the flow area of the mixture passing through the outlet opening of the second outlet. a second dispersion chamber downstream of said throat having a wall spaced apart from a central plane of said second outlet to provide a first outlet neck having said first flange to prevent contamination passing through said first outlet neck; the first dispersion chamber is effective to increase the velocity of the air and liquid and the mixture of substances; the first dispersion chamber is effective to reduce some liquid and contaminant particles in the air passing through when decreasing the velocity; a second having a second flange;
The outlet is effective to provide a further increased velocity and enhanced mixing of air passing therethrough as it enters the second dispersion chamber, and is provided with means for separation of contaminants from liquid downstream of the second outlet. , a wet separator that purifies contaminated conditioned air discharged from the work area. 2. The upper wall has an upwardly facing surface facing the work area, and the means for supplying overflow liquid is operative to cause overflow liquid to flow over said surface and from said surface to a first outlet; 1 outlet has a vertical central plane and the first
The other side wall of the outlet is flat and slopes downwardly toward the central plane and terminates in a bottom wall, said bottom wall extending from the flat side wall through the neck, and said one side wall being convex and sloping downward toward the central plane. The convex sidewall is smoothly curved to form a smooth transition from the upwardly facing surface through the exit neck, and the convex sidewall is smoothly curved to form a smooth transition from the upwardly facing surface through the exit neck, and the convex sidewall is A wet separator according to claim 1, wherein the free space is larger than the free space through the neck. 3. The wet separator according to claim 2, wherein the slope of the bottom wall is in the range of 5° to 45° with respect to the horizontal plane. 4. The dispersion chamber has a vertical rebound wall opposite the outlet neck, which is located directly below the means for supplying the overflowing liquid to the first outlet and whose lower part slopes downwardly towards the second outlet. Claim No. 2
Wet separator as described in section. 5. Wet separator according to claim 4, having means for directing the overflowing liquid along the lower guide surface, the second flange comprising an upright flange on the lower part in the second outlet. . 6 The first outlet has a vertical central plane, the bottom wall forming the neck directs the flow of contaminated air and overflow liquid laterally away from the central plane, and the dispersion chamber connects the first outlet to the second The wet separator according to claim 1, further comprising a guide surface connected to the outlet, the guide surface being a continuous part of the bottom wall of the first outlet, and a lower part of which forms the wall of the second outlet. . 7. The wet separator according to claim 6, wherein the slope of the guide surface and the bottom wall at the neck ranges from 5° to 45° with respect to the horizontal plane. 8. The dispersion chamber is provided immediately below the means for supplying the overflowing liquid to the first outlet and has a vertical rebound wall facing the outlet neck, the lower part of which is opposite to the slope of the lower part of the guide surface. 7. A wet separator as claimed in claim 6, wherein the two lower parts are inclined towards the second outlet. 9. The wet separator of claim 1, wherein the at least one flange is a selectively positioned flange projecting into the bench lily opening at right angles to the central plane to form a bench lily throat. 10 At least one bench lily shaped outlet is
10. A wet separator as claimed in claim 9 having a curved wall opposite the flange to form the opposite side of the bench lily throat. 11 The shape of the first and second dispersion chambers and the enlarged portion of the flow passage within the dispersion chamber effectively separate the dispersed particles from the passing air over the flow passage; A wet separator as claimed in claim 1 having a bottom sump for collecting liquid and contaminant particles separated from passing air. 12 The first outlet is configured to produce a dispersion flow extending in a flat curve toward a second outlet, and the dispersion chamber has a wall near the second outlet of the passageway of said curve and has a small space for disassembly. the angle of the wall is chosen to deflect a portion of the flow upon impingement of the flow to further disperse and mix the components of the flow; and the angle of the wall is selected to deflect a portion of the flow; A wet separator according to claim 1, which simultaneously produces the following effects. 13 second supply means adjacent to the second outlet for supplying overflow liquid to either side of the second outlet, and separate sump downstream of each of the two outlets and recirculating overflow liquid to each supply means; 2. A wet separator as claimed in claim 1, further comprising means associated with each reservoir. 14 The first outlet is configured to create a dispersion flow of the mixture of water, air and contaminants and direct the flow from the first outlet to the flat curve, and the dispersion chamber is configured to form a dispersion chamber located below the flow. 1, the dispersion chamber is divided into a front dispersion chamber and a rear dispersion chamber by a wall having a guide surface extending from one outlet, the guide surface intersecting the flow to further break up the flow and separate the Claim 1 terminating in an upwardly directed end capable of mixing the components of the stream before the passage to the rear dispersion chamber, the second outlet being provided within the rear dispersion chamber. Wet separator as described in section. 15 The second outlet has an outlet opening that directs the flow through the second outlet from a central plane of the second outlet into a second distribution chamber downstream of the second outlet, the second distribution chamber having a vertical opening opposite the outlet opening. 15. A wet separator as claimed in claim 14, having a flat wall and a sump between the outlet opening and the wall. 16 first for air, each having a vertical center plane;
a second bench lily-shaped outlet, comprising means for supplying overflow liquid to said first outlet, said first outlet having sloped sidewalls for receiving overflow liquid concentrated inwardly toward a central plane; consisting of an elongated opening, one of the side walls having an outwardly converging lower end and the other side wall terminating in a bottom wall intersecting the central plane and forming an outlet neck with an air passage. a flange sloped below the lower end of one of the side walls and projecting from the bottom wall towards the one side wall so that contaminated air and overflow liquid are mixed together and diverted away from the central plane; at the neck, such that overflow liquid from the other side wall flows over the flange along a sloped bottom wall to be deflected into the air passageway of the neck, forming one side wall. Second
a second outlet, comprising a dispersion chamber for dispersion and muffling beyond the neck terminating in an upright rebound wall having a lower part sloping towards the central plane of the outlet, said sloping bottom wall forming the other side wall; terminating in a lower part sloping oppositely towards said second outlet, the second outlet having a throat on the wall for receiving overflow liquid and having a free passage smaller than the neck of said first outlet; a second wall opposite the throat for receiving the mixture passing through the second outlet and providing separation of liquid and contaminants from the mixture as it flows downstream of the second outlet; a wet separator for purifying contaminated conditioned air discharged from a work area, the wet separator being inclined so that the contaminated liquid and contaminants flow away from a second outlet; 17. The wet separator of claim 16, wherein the second outlet has a flange for deflecting overflow liquid from the second wall into the free passage area of the outlet throat. 18. Claim 1, wherein the throat of the second outlet lies in the central plane of the second outlet, and the second wall has an angled bottom wall located below the throat of the second outlet.
Wet separator according to item 6. 19 A series of at least two outlets, comprising an enlarged dispersion chamber between the two outlets with a guiding surface extending between the two outlets, each outlet having a restricted ventilated throat forming an air passage; In a method for purifying conditioned air contaminated with solid or semi-liquid pollutants discharged from a work area by means of a wet separator, the final outlet of which is separate from the first outlet, the guide surface between the outlet wall and the outlet; a flange for directing the overflow liquid from at least one wall into an air passageway in each throat, the series of first outlets connecting the overflow liquid to the discharged air and contaminants; mixing at a first air velocity and causing the mixture to flow through a series of first outlet air passages having a small flow cross section to form a mixed stream and direct the mixed stream to a dispersion chamber; The flow cross-section is enlarged at a reduced velocity to disperse some of the contaminants and liquids in the passing air, and the flow is broken up and the noise damping cover of the second outlet is closed. impinging the flow stream against the guide surface of the dispersion chamber near the second outlet so as to form a flow cross section smaller than the first flow cross section and moving the air and liquid at a velocity higher than the first air velocity; A method for purifying contaminated conditioned air comprising the step of: passing air through a series of final outlet air passages to mix at a first outlet to produce a noise producing pressure greater than the pressure drop at the first outlet; . 20 forming a throat using a flange of the second outlet to direct the overflow liquid to a wall of the second outlet upstream of the throat and deflecting the overflow liquid from the wall into the air passageway of the second outlet; Claim No. 19
The method described in section. 21. Claims comprising the step of controlling the separator at the final outlet to act on overflow liquid from the separator to a series of first and final outlets to provide a liquid temperature lower than the temperature at the first outlet. The method according to paragraph 19. 22. The method of claim 19, comprising the steps of recirculating the air flowing from the final outlet to the work site and conditioning the recirculated air to the temperature required at the work site.