FIELD OF THE INVENTION
This invention is relates to tanks, generally used for storage of water in home and commercial
sector such as hospital, college, school, industry etc.The traditionaltanks have so many basic
problemssuch as overflow of water, outbreak of insects, fear of electric shock, Scaling on
electrodes, tear and wear during cleaning etc. This invention presents a new design of much
capable, efficient and durable anti-overflow water storage tank in comparison of traditional
tanks.
BACKGROUND OF THE INVENTION
Need of continuous water supply in domestic and commercial uses are increasing day by day.
For this purpose water storage tank are in use, in big number. Generally theses tank puts on
terrace of the building and fills through colony/ municipal supply or by submersible or by
motor pump. During tanks filing we cannot watch the water level inside the tank, so overflow
of water is very common. Overflow of water creates so many problems such as wastage of
valuable water and resources, damp in building, decomposition of building colour, roof,
plaster and wall, outbreak of mosquito insect and weed etc.
To avoid this overflow, some mechanical and electronic devices are use in tanks, but
practically nearby 80% tanks occurs overflow due to above said demerits of present antioverflow
devices. This is worry full scenario of wastage of water and related resources.So it
is a big need of these demeritsfree tank. This invention is inspiredby this need.
PRIOR ARTS AND THEIR DEMERITS
There is much type of tanks available with anti-overflow system. The water storage tank
having anti-overflow device, can be divided into two types, mechanical based and electric /
electronics based.
MECHANICAL BASED
(1) Open float ball valve system:-In this system an empty ball with a lever, hangs inside
the tank nearby up to 12 inches below the tank cover and, connects to inlet pipe.
When water reaches near to inlet pipe it pushes floating ball upward. In this moment
levercloses the mouth of inlet pipe, and incoming of water stops.At high water
pressure it become damage easily. So this device is not successful in water supply.
(2) Closed chamber float Ball valve system:-The basic principle of checking the
overflow is same as 'open float valve system'.But Closed chamber float ball valve
systemis some more compact in size and shape. This is very sensitive device.At high
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water pressure it become damage easily, so this device is not successful in water
supply.
ELECTRONIC DEVICES
(3) Mercury base switch system- In this system a watertight vessel partially filled with
Mercury hangs from the top sites in the tank. The vessel has two electrodes inside,
which connectsto motor pumpin series with wire. When water reach to top of tank, the
vessel also move upward, in this condition mercury touches the both electrodes and
create a short circuit for a relay connected with motor pump. The short circuit operate
to relay and it disconnect the power supply of motor and thus motor pump stops.
Great fear of toxicity of water by Mercury and fear of electric shock presents always
in this system.
(4) Electronic circuit andLimit switch base anti overflow system- In these kinds of
systems electronic circuit judge the water level with the help of electrodes placedin
tank and send electronic signal accordingly to operate motor- pump. Electrodes
merges in water generally and thus occur scaled. There is a great fear of electric shock
in this system.
Scaling is the big problem of all electrode base anti-overflow devices. Due to scaling of
electrodes it become high maintenance full, costly, non-durable andnon-reliable. Due to
installation of these devices in upper part of the tank, neither tank could fills in its full volume
nor does it remain insect free.
Prior art- US6729367B2, US20040007264A1, US7114879B2, US20150225228
DEMERITS OF AVAILABLE DEVICES
The maindemerits of traditional anti-overflow devices are-
1 All these traditional electronic devices live in direct touch of water in tank. most of people
do not want to use them due to fear of electric shocks. Electrodes of such electronic devices
become scaled very quickly so it is very irrigative to repair them again and again.
2 Mechanical type anti-overflow accessories are very sensitive and non-durable. Motor pump
does not stop in most of cases when tank become full and overflow occurs.
3 Tanks could not fill in full capacity due to installation of anti-overflow components inside
the tank, and up to 15% volume remains empty. Thus this is wastage of resources.
4 Nobody is bound to use anti-overflow devices because they are not in-built with the tank.
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5 Due to these traditional devices tanks could not remain insect free.
6 Tear and wear occur during maintenance and cleaning of the tank because component
connects with tank very Ridgley and tank cleaning need some movability.
OBJECT OF THE INVENTION
Traditional anti-overflow devices are must to be installed inside the tank, and water touches
to their electrode, so most of people do not use them due to fear of electric shock and
electrode scaling. Thus huge quantity of water occurs wastage. The basic object of this
invention is to provide a new option of anti-overflow electronic devices, in whichwater do
not touch any part of devicefor avoid electric shockand scaling.The secondary objects of this
invention is to design aninsect free, rough-tough, low maintaining, durable and low cost antioverflow
device which can use full capacity of tankfor filling water.
SUMMARY OF INVENTION
Scenario of wastage of water in traditional water storage tank is very worrying. Nearby 80%
water storage tank overflows daily after availability and installation of many anti-overflow
devices. More than thousands litre water wastes daily due to their incapability. There is no
quite fit, reliable, cheap and durable anti-overflow system available. So there is a big need of
such anti-overflow system which can fight with these problems. The present invention is a
good option for these problems. This system removes most of demerits of existing devices. In
this invention the anti-overflow device is in-built with tank; the electrodes are placed outside
the tank and do not touch the water. This is fully insect free. Its components are cheap and
durable.This device will increase the trend of using anti-overflow devices in water storage
tank by common man.
DESCRIPTION OF DRAWINGS
Figure 1:-Illustrate the overall view of complete system of this invention.
Figure 2:- Illustrate the zoomed view of anti-overflow device.
Figure 3:-Illustrate the zoomed view of pressure circuit breaker device.
DESCRIPTION OF THE INVENTION
In figure number 1, the whole system of 'electrode free and shock proof anti-overflow water
storage tank' is shown. This system may divide into six main sections. First, the tank body (1)
which will store the water. Second, water inlet connection pipe (5), and their accessory,
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through which water will enter to the tank. Third, water supply connection pipe (7) and their
accessory, through which water will exit for supply.Fourth, pressure circuit breaker (14) and
their accessoryfor cut off the electric supply in motor-pump at optimum water level of tank.
Fifth, motor-pump (19), (20) and their accessory for boosting the water into tank. Sixth,
cover of tank (31) and its anti-overflow device (38) with other accessoryfor watertightening
the tank (1) and to stop overflow of water.
The water comes into the tank (1) through water inlet connection pipe (5). One end of this
pipe (5) is connected to tank body (1) with a waterproof coupling (6), and other end of this
pipe is connected to a hose pipe (4) with a screw clip (3). The other end of hose pipe (4) is
connected to water delivery pipe (2) with a screw clip (3). The water delivery pipe (2) is
connected with pump (20) and this pump is coupled with an electric motor (19). A non-return
valve (22) is fixed in delivery pipe to stop the back flow of water. Pump (20) is connected to
suction pipe (21), which is further connected to a non-returnvalve (22) to check the water
flow of water in pipe (21).
Supply of motor-pump is controlled with some electrical and electronics components, such as
electric control panel (23) and circuit board (27) and pressure circuit breaker (14) and DC
wiring (18). Circuit board (27) is connected to electric control panel (23) with supply wiring
(28) and signal wiring (29). Electric control panel (23) consists 220 V. AC supply wire (24)
and on-off switch (25) and relay (26).
One end of water supply connection pipe (7) is connect to tank (1) with a waterproof
coupling (6).Further connection pipe (7) divides into two branches, one holds gate valve (12)
and second holds union (8). A flexible rubber seal (13) is fitted with screw (3) just above the
gate valve (12) on branch pipe (7). Pressure circuit breaker (14) touches this seal (13) as per
figure and stands in correct position, through holding strip (15). A cover (16) is fitted with the
help of cover fixing strip (17) to tank for safety purpose of pressure circuit breaker (14).
One end of union (8) is connected with water supply connection pipe (7) and other is
connected with a gate valve (9) and further tohose pipe (10) through a screw clamp (3).
Further they remain end of hose pipe (10) is connected to water supply pipe (11) with screw
clamp (3).
Tank body (1) is caped with water tight cover (31),forbestwatertightcoupling in between
both, tank (1) consists outside threads (30) and cover (31) consist inside threads (32). A
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flexible rubber ring (33) is placed above threads (32) for water tightening the tank.Four fins
(34) are provided at outside the cover of tank (31) for easy opening and tightening.
A circular hole (35) is provided in cover of tank (31) for ventilation and establishment of
anti-overflow device (38). To connect anti-overflow device (38) to cover (31), raised
coupling ring (36) is provided in cover (31). Coupling ring (36) consists inside threads (37).
Anti-overflow device (38) consist some parts such as- outside threads (39) for coupling with
tank cover (31) and a disc (40) with circular hole (41) for passing air and a circular rubber
seal (42) to check overflow and a screw (43) for fixing it and a mesh (46)for check entry of
insect into the tank. To avoid burst the tank in failure of‘pressure circuit breaker’ (14) a
safety seal (62) isprovided as an in-built part in circular rubber seal (42). For easy fitting
threads (47) are provided at outside the mesh (46) and threads (45) are provided inside the
end of anti-overflow device (38). Holes (49) for air ventilation, mesh guard fins (50) to stop
mesh (46) in desire limit and screwdriver groove (48) are provided in mesh (46) to open or
close it. For installation and repairing of circular rubber seal (42) a circular removable cap
(44) is placed in anti-overflow device (38) with threads connection. To protect anti-overflow
device (38) a cover (51) is fitted over it with tank cover (31) by screws (52).
In figure number 2 detail of pressure circuit breaker is shown, it consist holding strip (15) and
hard frame (54) of non-conducting material to hold all inner component and a lever (55) of
non-conducting material for disconnect the circuit of motor and a hinge (56) and a spring (57)
and fixed electric point (58) and movable electric point (59) and bush (60) to hold lever (55)
with free vertical movement and wire guard (61) to protect wire (18) by water and bending.
A DC wire (18) connects with movable electric point (59) and fixed electric point (58) in
series, it exits fromflexible rubber cover (53) through guard (61).A flexible rubber cover (53)
is also placed over,all these component for protecting against water and damp especially rain
water.
DESCRIPTION OF MECHANISM OF THE DEVICE
After installation and fixing all components as per figure Number 1, 2 and 3 the tank should
be placed in desire space. In this position the tank is empty, when we want to fill it, on-off
switch (25) should be push, and after pushing this, motor-pump (19) (20) will start to boost
the water into the tank. Water enters to the tank through inlet connection pipe (5). When the
water level reach to bottom of tank cover (31), it enters to hole (35) and then anti-overflow
device (38). Now water starts to flow through hole (41), flowing water creates a force on
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circular rubber seal (42). Due to this force, rubber seal closes to hole (41). In this condition
water pressure, inside the tank will raise quickly. Due to high water pressure, watertight
flexible rubber diaphragm (13) will expand upward and will push to lever (55), which is
situated inside the flexible rubber cover (53) of the circuit breaker (14). When lever (55)
move upward, it push to movable electric point (59) upward, in this condition connection
between it and fix electric point (58) does breaks. Because both electric point (58) and (59)
are connected in series of relay of motor pump, so when liver (55) create distance between
them, the supply of motor-pump does break. In absence of electric Supply, motor and
boosting of water both become stop.
On the other hand when we want to take supply of water tank through connection pipe (7),
the water pressure and level inside the tank become decrease and vacuum occurs. Due to
vacuum the flexible rubber seal (42) moves in their old position and whole (41) become open,
now the atmospheric air enter to the tank through mesh (46) and whole (41). As per need
motor pump can be restart to pushing on-off switch (25). In any rare condition, if pressure
circuit breaker becomes fail, then to avoid the busting of tank, safety seal (62) will destroy
automatically and tank system will safe.
As per need we can restart the motor to push the on-off switch (25). Due to flexibility of the
hose pipe (4) and (10) tank may be move in some quantity during installation and cleaning
without any fracture in components and any other harm. This system can be easily convert
into automatic supply system with placing a pressure transducer in water supply connection
pipe (7) and connecting it with circuit board (27).Circuit (27) product low voltage harmless
DC current. This current flows in reallyand in both electric points (58) and (59), so whole
system becomes electric shock proof.
ADVANTAGE OF THIS INVENTION
1). No component of invent anti-overflow electronic device live in touch of water, so this
system is fully free from electric shock.
2). Problem of the scaling of electrodes will not occur in this tank, because all components
relates to anti-overflow situates outside the tank.
3). Motor pump will automatically stop when tank becomes full. This system is very durable
and low cost.
4). Water fills in Full capacity of the tank.
5). Tear and wear in components during maintenance and cleaning of the tank does not occur.
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6). Tank is fully insect free.
7). Accessories of the tank is low cost, durable and easy in maintenance.
8). Efficient in every condition of tank filling, whether tank is to be filled by high pressure
overhead water tank supply, or by submersible, or by any another kind of motor pump.
9). Can be easily converted into smart automated tank system using pressure transducer.
10). Anti-overflow device used in this invention works easily in both condition whether it is
fills by motor pump or by colony/municipal supply.

WE CLAIM:
1. A electrode free and shockproof anti-overflow water storage tank' comprises tank
body and water inlet connection pipe system with their components and water supply system
with their components and anti-overflow system with their components and pressure circuit
breaker system with their components.
2. the system as claimed in 1 wherein said inlet connection pipe (5) and water supply
pipe (7) systems consists hose pipe (4) and (10) and waterproof coupling (6).
3. The system as claimed in 1 wherein said anti-overflow system consist watertight tank
cover (31) and outside threads (30) and inside threads (32) and flexible rubber ring (33) and
fins (34) and hole (35) and raised coupling ring (36) and inside threads (37).
4. The system as claimed in 1 wherein said anti-overflow system consist body (38) and
circular disc (40) and circular hole (41) and circular rubber seal (42) and safety seal (62) and
circular cap (44).
5. The system as claimed in 1 to 4 wherein said anti-overflow system consist mesh (46)
and inside threads (45) and outside threads (47) and screwdriver slot (48) and vent hole (49)
and mesh guard fin (50) and cover (51).
6. The system as claimed in 1 to 5 wherein said, pressure circuit breaker system
consists ‘watertight flexible rubber diaphragm’ (13) and holding strip (15) and hard frame
(54) and lever (55) and hinge (56) and spring (57) and fixed electric point (58) and movable
electric point (59) and bush (60) and wire (18) and wire guard (61) and flexible rubber cover
(53).