Sprinkling apparatus for cooling tower

Gas and liquid contact apparatus – Fluid distribution – Valved

Reexamination Certificate

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Details

C261S079200, C261S115000, C096S320000

Reexamination Certificate

active

06322054

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to devices for processing exhaust and more particularly to a sprinkling apparatus for cooling tower in an incinerator for effectively filtering out the noxious particles in the exhaust.
BACKGROUND OF THE INVENTION
Conventionally, a plurality of large particles are contained in the exhaust discharged from incinerators. It is common to process the exhaust to filter out such noxious particles prior to discharging to the air. Also, exhaust may be acid. As such, unprocessed acid exhaust may pollute the air. In view of the foregoing, it is necessary to process the exhaust in order not to pollute the environment.
A conventional exhaust processing apparatus is shown in
FIG. 1
comprising a cooling tower
1
and a water filtering means
2
wherein top of cooling tower
1
is in communication with the exhaust pipe of combustion chamber of incinerator, while the bottom thereof is in communication with water filtering means
2
. Note that water filtering means
2
is conventional such that a detailed description is omitted.
Cooling tower
1
is dome-shaped with an annular tube
4
provided along the inner surface. Tube
4
has one opening connected to inlet pipe
401
which is turn pierces through the wall of tube
4
to be in communication with an external water tank, thereby delivering water therefrom. A plurality of outlets
402
are provided along the bottom of tube
4
for sprinkling water into mist. Such mist is dispersed in the cooling tower
1
, thereby mixing with exhaust particles already dispersed therein. The mixture of water mist and exhaust particle is dropped on water filtering means
2
for filtering.
Above apparatus is implemented by the fact that the diameter of outlet
402
is smaller than that of inlet pipe
401
such that flow will sprinkle in high speed and high pressure through outlets
402
. It is understood that the higher the pressure the easier the water mist will be mixed with the exhaust particle. As such, the only way to carry out an easier water mist and exhaust particle mixing is to increase water pressure because the diameter of outlet
402
is fixed after installed. However, tube
4
has a pressure limit and thus it is impossible to increase water pressure arbitrarily. Also, water only sprinkles downward after leaving outlets
402
. As such, water mist only stays a short time in cooling tower
1
, i.e., the time required to travel from outlet
402
to bottom of cooling tower. As a result, the degree of water mist mixed with exhaust particle is poor.
Thus, it is desirable to provide a novel sprinkling apparatus for cooling tower in incinerator in order to overcome the above drawbacks of prior art.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a sprinkling apparatus for cooling tower in incinerator wherein discharged air impinges on discharged water to enhance the mixing degree of water mist and exhaust particle and baffle plate is pivotable so as to change the direction of water emitting in cooling tower, thereby generating a rapid, violent, whirling motion in water mist and extending the time of water mist staying in cooling tower. This achieves a high degree mixing of water mist and exhaust particle, thus greatly improving the efficiency of filtering out noxious particles in the exhaust.
To achieve the above and other objects, the present invention provides a sprinkling apparatus for cooling tower comprising a plurality of generally equally spaced apart nozzle groups along the periphery of cooling tower and a plurality of guiding assemblies corresponding to nozzle groups wherein each nozzle group is disposed through the wall of cooling tower includes a water tube and an air tube. One end of water tube is within and adjacent to the wall of cooling tower, while the other end thereof is pierced through the wall of cooling tower and throttle valve to be in communication with an external water tank wherein the internal end of water tube is bent to have its opening facing the air discharged opening of air tube so as to cause discharged water to impinge on discharged air to increase the mist degree of water. One end of air tube is within and adjacent to the wall of cooling tower, while the other end thereof is pierced through the wall of cooling tower and throttle valve to be in communication with an external air tank wherein the air tube is oblique at a predetermined angle with respect to the wall of cooling tower so as to effect a whirling motion in discharged air. Each of guiding assemblies includes a rectangular baffle plate having an engagement portion at one end, a spindle having one end pivotably secured to one side of baffle plate and the other end secured to the wall of cooling tower, and an adjustment bolt having a head disposed above the external surface of cooling tower and a threaded rod obliquely pierced through the wall of cooling tower with distal end urged on the engagement portion wherein baffle plate is adjacent and corresponding to the discharged opening of air tube so as to be impinged by the discharged high speed, high pressure water mist, and engagement portion may pivot about the spindle by turning the adjustment bolt so as to actuate baffle plate to clockwise/counterclockwise rotate for varying the direction of water mist emitted in cooling tower.
The above and other objects, features and advantages of the present invention will become apparent from the following detailed description taken with the accompanying drawings.


REFERENCES:
patent: 981098 (1911-01-01), McCaskell
patent: 1543941 (1925-06-01), Mathesius
patent: 2413420 (1946-12-01), Stephanoff
patent: 3304695 (1967-02-01), Krochta
patent: 3495384 (1970-02-01), Alliger
patent: 3772856 (1973-11-01), Moran
patent: 4810268 (1989-03-01), Chambers et al.
patent: 5547540 (1996-08-01), Ruscheweyh

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