TECHNICAL FIELD
The present invention generally relates to the field of water purifying systems and more particularly, to a pressure pumping arrangement for a water purifying apparatus of a water purifying system.
BACKGROUND
Various sanitary equipment are known in the sanitation industry. One such sanitary equipment is a water purifying apparatus that is employed for purifying water. The water purifying apparatus receives impure water from a water source, performs purification of water, and supplies purified water as output. Examples of the water purifying apparatuses may include, but is not limited to, a sand-filter type water purifying apparatus, a reverse osmosis (RO) water purifying apparatus, a water softener type water purifying apparatus, and the like. Such water purifying apparatuses are required to receive water above a threshold pressure value, for its efficient operation. In households, for example, high rise living households, a pressure of water from the water source may be relatively low. This may result in poor/ inefficient operations of the water purifying apparatus. Furthermore, in addition to the water purifying apparatuses, several other household equipment may be known that are required to be supplied with water at increased pressure.

In order to address this problem of low pressure of water in the sanitary equipment, a common pressure pump is typically usually employed for increasing a pressure of water as received from the water source before supplying to the sanitary equipment (including the water purifying apparatus). In particular, the common pressure pump is fluidly disposed between the water source and the multiple sanitary equipment (including the water purifying apparatus), proximal to the water source. The common pressure pump receives water from water source at low pressure, increases a pressure of water, and then supplies the pressurised water to the multiple sanitary equipment (including the water purifying apparatus).

Conventionally, the common pressure pump is disposed proximal to the water source, and is fluidly connected between the water source and the sanitary equipment (including the water purifying apparatus). As the common pressure pumps are conventionally fluidly connected between the water source and multiple sanitary equipment, such common pressure pumps require floor space for mounting and placement. Moreover, such common pressure pumps operate independent of pressure requirements of the sanitary equipment, and therefore requires relatively more electric energy for operation. In particular, as the common pressure pump is required to fulfil pressure requirements of multiple sanitary equipment, it is required to be operated above a maximum threshold value among the threshold value requirement of multiple sanitary equipment. This requires unnecessary wastage power electric energy. In certain situations, when multiple sanitary equipment are required to be used, the common pressure pump operate at a defined power to fulfil pressurised water requirements of multiple sanitary equipment. In certain situations, for example when only the water purifying apparatus is required to be used among the multiple sanitary equipment, the common pressure pump may still operate at same defined power to fulfil pressurised water requirements of the water purifying apparatus. This results in unnecessary wastage of electric energy. Moreover, the conventionally known common pressure pump is required to be manually activated, when required to receive the supply of water from the water source, which poses an unnecessary burden on a user to ensure switching ON and OFF of the common pressure pump.
In view of the existing limitations, there is an imperative need to provide a water purifying system including a water purifying apparatus, such that the water purifying system reduces power requirements for fulfilling pressurized water requirements.
SUMMARY
The present disclosure relates to a water purifying system, comprising a water source, a water purifying apparatus, an inline pressure pumping arrangement. The inline pressure pumping arrangement includes a pressure pump and a control unit. The pressure pump is fluidly disposed between the water source and the water purifying apparatus, and is positioned proximal to the water purifying apparatus. With such arrangement, the water source supplies water to the water purifying apparatus through the pressure pump. The control unit is electrically connected to the pressure pump, and is adapted to activate the pressure pump as a pressure of the water supplied from the water source reaches below a threshold value. Upon activation, the pressure pump receives water from the water source, increase the pressure of the water above the threshold value, and supply the water at increased pressure to the water purifying apparatus.
BRIEF DESCRIPTION OF DRAWINGS
The present invention, both as to its organization and manner of operation, together with further objects and advantages, may best be understood by reference to the following description, taken in connection with the accompanying drawings. These and other details of the present invention will be described in connection with the accompanying drawings, which are furnished only by way of illustration and not in limitation of the invention, and in which drawings:
FIG. 1 is a schematic of a water purifying system, illustrating a water purifying apparatus and an inline pressure pumping arrangement, in accordance with the concepts of the present disclosure.
FIG. 2a is a sectional view of a sand filter apparatus of the water purifying apparatus of FIG. 1, operating in a service mode of operation, in accordance with an embodiment of the present disclosure.
FIG. 2b is a sectional view of a sand filter apparatus of the water purifying apparatus of FIG. 1, operating in a backwash mode of operation, in accordance with an embodiment of the present disclosure.
FIG. 2c is a sectional view of a sand filter apparatus of the water purifying apparatus of FIG. 1, operating in a rinse mode of operation, in accordance with an embodiment of the present disclosure.
FIG. 3a is a schematic of a portion of the water purifying system of FIG. 1, illustrating an attachment between the water purifying apparatus and the inline pressure pumping arrangement, in accordance with the concepts of the present disclosure.
FIG. 3b is a sectional view of a portion of the water purifying system of FIG. 1, illustrating an attachment between the water purifying apparatus and the inline pressure pumping arrangement, in accordance with the concepts of the present disclosure.
Fig. 4 shows a sectional view of the pressure pump of the inline pressure pumping arrangement of Fig. 3a-3b, in accordance with the concepts of the present disclosure.
DETAILED DESCRIPTION
Figure 1 shows a water purifying system [100], in accordance with the concepts of the present disclosure. The water purifying system [100] is employed for purifying water. The water purifying system [100] includes a water source [102], a water purifying apparatus [104], and an inline pressure pumping arrangement [106]. The water source [102] supplies water at a low pressure. The inline pressure pumping arrangement [106] is fluidly disposed between the water source [102] and the water purifying apparatus [104], and is proximal to the water purifying apparatus [104]. With such arrangement, the water source [102] is capable of supplying water to the water purifying apparatus [104] through the inline pressure pumping arrangement [106]. For ease in reference and understanding, the inline pressure pumping arrangement [106] will be referred to as the pressure pumping arrangement [106], interchangeably hereinafter.
The water purifying apparatus [104] may be any one of the conventionally known apparatuses that purifies water in household purposes. Examples of the water purifying apparatus [104] includes, but is not limited to, a sand-filter type water purifying apparatus, a reverse osmosis (RO) water purifying apparatus, a water softener type water purifying apparatus, or a combination thereof. In the present disclosure, the water purifying apparatus [104] is described as a combination of a sand filter apparatus [108] and a sediment filter apparatus [110]. However, concepts of the present disclosure may also apply to other types of water purifying apparatuses [104] as well. Each of the sand filter apparatus [108] and the sediment filter apparatus [110] performs different levels of filtration, to purify water as received from the water source [102] through the inline pressure pumping arrangement [106]. In particular, the sediment filter apparatus [110] is positioned fluidly downstream to the sand filter apparatus [108], in a water flow direction. The sand filter apparatus [108] receives water from the water source [102] via the pressure pumping arrangement [106], performs a first level of filtration of water by a sand filtration process, and supplies filtered water to the sediment filter apparatus [110]. The sediment filter apparatus [110] receives filtered water from the sand filter apparatus [108], performs a second level of filtration of water by a sediment filtration process, and supplies relatively more purified water as output. Structure and arrangement of the sand filter apparatus [108] will be described in detail hereinafter.
The sand filter apparatus [108] is a filtering unit that works on the principle of sand filtration process. The sand filter apparatus [108] includes a filter unit [112] and a control valve unit [114]. The filter unit [112] performs the first level of filtration of water as received from the water source [102] through the pressure pump [118] of the inline pressure pumping arrangement [106]. The filter unit [112] includes a cylindrical housing [112a], an inner cylindrical filter [112b], a sand bed [112c], and an inner core [112d]. The inner cylindrical filter [112b] is positioned within and coaxially aligned with the cylindrical housing [112a], defining an inner passage [112e] and an outer passage [112f]. The sand bed [112c] is positioned within the cylindrical housing [112a] in at least a portion of the outer passage [112f]. The inner core [112d] is positioned within and coaxially aligned with the inner cylindrical filter [112b], thereby defining a core passage [112g] therein.
The control valve unit [114] is an interface of the sand filter apparatus [108]. The control valve unit [114] includes an inlet port [114a], an outlet port [114b], and a drain port [114c]. The inlet port [114a] is fluidly connected to the pressure pumping arrangement [106], to receive water therefrom. A connection between the inlet port [114a] of the control valve unit [114] of the sand filter apparatus [108] and the pressure pumping arrangement [106] is enabled with use of at least one clip arrangement as shown in Figs. 3a and Figs. 3b. With such connection by the at least one clip arrangement, the pressure pumping arrangement [106] is supported on the sand filter apparatus [108]. The outlet port [114b] is connected to the sediment filter apparatus [110], to output first level filtered water to the sediment filter apparatus. The drain port [114c] is connected to a drain line, for draining extra water therefrom. Furthermore, the control valve unit [114] includes a number of flow passages [114d], for fluidly connecting the control valve unit [114] to the filter unit [112]. In particular, the inlet port [114a], the outlet port [114b], and the drain port [114c] of the control valve unit [114] are fluidly connected to the inner passage [112e], the outer passage [112f], and the core passage [112g] of the filter unit [112], via the flow passages [114d]. Furthermore, the control valve unit [114] has a number of flaps [114e] positioned within the number of flow passages [114d] that can be manipulated, to selectively allow the fluid communication of any of the inlet port [114a], the outlet port [114b], and the drain port [114c] of the control valve unit [114] with the inner passage [112e], the outer passage [112f], and the core passage [112g] of the filter unit [112]. Such manipulation is enabled electrically, and therefore the control valve unit [114] is electrically powered by a common electric supply [116]. By such manipulation of the flaps [114e], the filter unit [112] of the sand filter apparatus [108] is operated in a number of operation modes, including a service mode, a backwash mode, and a rinse mode.
Figure 2a, 2b, and 2c shows the service mode, the backwash mode, and the rinse mode of operation of the sand filter apparatus [108]. In the service mode of operation of the sand filter apparatus [108], the inlet port [114a] is fluidly connected to the inner passage [112e] of the filter unit [112], the outlet port [114b] is fluidly connected to the core passage [112g], and the drain port [114c] is closed. Therefore, in the service mode of operation of the sand filter apparatus [108], water supplied to the inlet port enters the inner passage [112e] via the inlet port [114a], passes through the inner cylindrical filter [112b] to the outer passage [112f], and then passes through the sand bed [112c], thereafter passes to the core passage [112g], and thus exit through the outlet port [114b] via the core passage [112g]. With such passing of water through the inner cylindrical filter [112b] and the sand bed [112c], the first level of filtration of water is enabled.
In the backwash mode of operation of the sand filter apparatus [108], the inlet port [114a] is fluidly connected to the core passage [112g] of the filter unit [112], the outlet port [114b] is closed, and the drain port [114c] is fluidly connected to the inner passage [112e]. Therefore, in the backwash mode of operation of the sand filter apparatus [108], water supplied to the inlet port [114a] enters the core passage [112g] via the inlet port [114a], passes through the sand bed [112c] to the outer passage [112f], and then passes through the inner cylindrical filter [112b], thereafter passes to the inner passage [112e], and thus exit through the drain port [114c] via the inner passage [112e]. It may be noted that a flow of water in the backwash mode of operation is reverse to the flow of water in service mode of operation of the sand filter apparatus [108]. Therefore, in the backwash mode of operation of the sand filter apparatus [108], impurities in each of the sand bed [112c] and the inner cylindrical filter [112b] are washed off.
In the rinse mode of operation of the sand filter apparatus [108], the inlet port [114a] is fluidly connected to the inner passage [112e] of the filter unit [112], the outlet port [114b] is closed, and the drain port [114c] is fluidly connected to the core passage [112g]. Therefore, in the rinse mode of operation of the sand filter apparatus [108], water supplied to the inlet port [114a] enters the inner passage [112e] via the inlet port [114a], passes through the inner cylindrical filter [112b] to the outer passage [112f], and then passes through the sand bed [112c], thereafter passes to the core passage [112g], and thus exit through the drain port [114c] via the core passage [112g]. With such passing of water through the inner cylindrical filter [112b] and the sand bed [112c], components of the sand filter apparatus [108] are rinsed. Furthermore, it may be noted that the sand filter apparatus [108] receives water from the water source [102] via the pressure pumping arrangement [106]. It may be noted that the water source [102] supplies water at low pressure. However, it is conventionally known that each mode (service mode, backwash mode, and rinse mode) of operation of the sand filter apparatus [108] requires water input at sufficiently increased pressure values. In particular, each of the service mode, the backwash mode, and the rinse mode of operation of the sand filter apparatus [108] requires water at a pressure value greater than a threshold value that is generally greater than pressure value of water supplied by the water source [102]. It may also be noted that each of the service mode, the backwash mode, and the rinse mode of operation of the sand filter apparatus [108] requires water at a pressure value within a range of 1.5 bar – 4 bar at the inlet port [114a] of the control valve unit [114], which is above the threshold value. Concepts of the present disclosure will be focused on service mode of operation of the sand filter apparatus [108], however it may be obvious to a person ordinarily skilled in the art that the concepts may also apply to other modes of operation of the sand filter apparatus [108]. Further, it may be noted that, in the service mode of operation of the sand filter apparatus [108], the pressure value of water supplied by the pressure pumping arrangement [106] may require to be varied based on output requirements, for example a flow rate, of the sand filter apparatus [108]. In particular, in certain conditions, an output requirement of a higher flow rate (a first flow rate) may be required at the outlet port [114b] of the sand filter apparatus [108], wherein the pressure pumping arrangement [106] is required to pump water at a higher pressure value (a first pressure value) above the threshold value. Furthermore, in certain conditions, an output requirement of a lower flow rate (a second flow rate) may be required at the outlet port [114b] of the sand filter apparatus [108], wherein the pressure pumping arrangement [106] is required to pump water at a lower pressure value (a second pressure value). For such purposes of increasing the pressure of water from the water source [102] and thus supplying pressurized water at varied pressure values to the sand filter apparatus [108], the pressure pumping arrangement [106] is fluidly disposed between the water source [102] and the sand filter apparatus [108] of the water purifying apparatus [104].
The pressure pumping arrangement [106] is fluidly disposed between the water source [102] and the water purifying apparatus [104], at a position proximal to the water purifying apparatus [104]. In particular, the pressure pumping arrangement [106] positioned just before the water purifying apparatus [104], and is dedicated for operation of the water purifying apparatus [104] only. The pressure pumping arrangement [106] ensures that the water supply form the water supply [102] to the water purifying apparatus [104] is above a threshold value. The pressure pumping arrangement [106] includes a pressure pump [118] and a control unit [120].
Figure 4 shows a sectional view of the pressure pump [118]. The pressure pump [118] is fluidly disposed between the water source [102] and the water purifying apparatus [104], and is proximal to the water purifying apparatus [104]. With such arrangement, the water source [102] is capable of supplying water to the water purifying apparatus [104] through the pressure pump [118] of the inline pressure pumping arrangement [106]. The pressure pump [118] is an electrically operated pump electrically powered by the common electric supply [116]. When activated, the pressure pump [118] is adapted to receive water from the water source [102], increase the pressure of the water above the threshold value, and supply the water at increased pressure to the water purifying apparatus [104]. In the present embodiment, the pressure pump [118] is a double diaphragm booster pump that is capable of receiving water from the water source [102] at low pressure, controllably increasing a pressure of water, and delivering pressurized water to the sand filter apparatus [108] of the water purifying apparatus [104], when activated. The pressure pump [118] includes a combination of a linear crank actuator [118a] attached with two diaphragms [118b] at opposing ends, a housing [118c] that houses the linear crank actuator [118a] separated by four (4) spherical flexible seals [118d]. The linear crank actuator [118a] is operated by an electric motor, such that water is received within the pressure pump [118], the water pressure level is increased, and water is then supplied to the sand filter apparatus [108]. Therefore, when activated, the pressure pump [108] is capable of receiving water from the fluid source, controllably increase the pressure of the water to the desired pressure value, and then supply water to the sand filter apparatus [108] Notably, the microswitch and the control unit [120] are provide to perform such controlled operation of the pressure pump [118].
Referring back to Figure 1, the microswitch is positioned integral to the control valve unit [114] of the sand filter apparatus [108] and is electrically connected between the control valve unit [114] of the sand filter apparatus [108] and the control unit [120] in the pressure pump [108]. The microswitch sends a signal to the control unit [120] to cause activation/ deactivation of the pressure pump [108]. In particular, the microswitch sends deactivation signal to the control unit [120], as the sand filter apparatus [108] is non operative. Moreover, the microswitch sends an activation signal to the control unit [120] as the sand filter apparatus [108] operates in either of the service mode, the rinse mode, and/or the backwash mode of operation.
The control unit [120] is suitably provided to control the pressure pump [118], and in particular to activate/deactivate the pressure pump [118] of the pressure pumping arrangement [106]. The control unit [120] is electrically connected to the microswitch in the control valve unit [114] of the water purifying apparatus [104], to determine if the sand filter apparatus [108] of the water purifying apparatus [104] is non operative (upon receipt of deactivation signal from the microswitch) or is operative in either of the service mode, a backwash mode, and a rinse mode (upon receipt of activation signal from the microswitch). Moreover, the control unit [120] is adapted to determine if a pressure of the water as received form the water source is above/below the threshold value. Furthermore, the control unit [120] is electrically connected to and controls the pressure pump [118] thereof. In particular, the control unit [120] activates the pressure pump upon determination of the operation of the filter unit [112] of the sand filter apparatus [108] in one of the service mode, the backwash mode, and the rinse mode (upon receipt of the activation signal form the microswitch in the control valve unit [114]) and upon determination of the pressure of water as received from the water source [102] being below the threshold value.
Furthermore, upon activation of the pressure pump [118] by the control unit [120], the pressure pump [118] receives water from the water source at pressure level below the threshold value, increase the pressure of the water to the pressure above the threshold value, and supply water at the increased pressure level to the sand filter apparatus [108]. In one embodiment, the threshold value is kept constant at 1.5 bar pressure, such that the pressure pump [118] is activated upon operation of the sand filter apparatus [108] in any of the defined modes, and water source [102] supplying water below the threshold value of 1.5 bar. In such embodiment, the pressure pump [118] receives water at pressure below the threshold value of 1.5 bar pressure from the water source, increase the pressure of water to the pressure above the 1.5 bar pressure, and supply the water at increased pressure to the sand filter apparatus [108]. In another embodiment, the threshold value is variable and adjusted to a user-defined pressure with use of a knob connected to the control unit [120], such that the pressure pump [118] is activated upon operation of the sand filter apparatus [108] in any of the defined modes, and water source [102] supplying water below the user-defined pressure. In such embodiment, the pressure pump [118] receives water at pressure below the threshold value of user-defined pressure from the water source, increase the pressure of water to the pressure above the user-defined pressure , and supply the water at increased pressure to the sand filter apparatus [108]. In yet another embodiment, the threshold value is subject to output requirements of the sand filter apparatus [108]. The microswitch may determine the output-dependent threshold value based on the output requirements of the sand filter apparatus [108]. For example, in situations of the output requirements of the first flow rate (higher flow rate) of the sand filter apparatus [108], the microswitch may determine a first threshold value (higher threshold value). In certain other situations of the output requirements of the first flow rate (lower flow rate) of the sand filter apparatus [108], the microswitch may determine a second threshold value (lower threshold value). The microswitch accordingly sends the activation signal to the control unit [120] to controllably operate the pressure pump [118], such that the pressure pump [118] is activated upon operation of the sand filter apparatus [108] in any of the defined modes, and water source [102] supplying water below either of the first threshold value or the second threshold value.
In operation, as the common electric supply [116] is initially activated, the sand filter apparatus [108] is actuated. Upon such actuation, the flaps [114e] of the control valve unit [114] are so manipulated to operate in one of the service mode, the backwash mode, and the rinse mode of operation of the sand filter apparatus [108]. With such actuation of the sand filter apparatus [108], the microswitch in the control valve unit [114] of the sand filter apparatus [108] sends the activation signal to the control valve unit [120]. Concurrently, the control unit [120] determines if the pressure of water as supplied by the water source [102] is below/above the threshold value. Upon determination that the water as supplied by the water source [102] is below the threshold value, and receipt of the activation signal from the microswitch in the control valve unit [114], the control unit [120] automatically activates the pressure pump [118]. Upon activation, the pressure pump [118] receives water at low pressure from the water source [102], increase the pressure of the water to the pressure above the threshold vale, and delivers the water at the increased pressure level to the sand filter apparatus [108]. It may be noted that as the pressure pumping arrangement [106] is dedicated to the water purifying apparatus [104], it is operable only when the water purifying apparatus is operable. In particular, the pressure pumping arrangement [106] is not required to be operated during non-operative conditions of the water purifying apparatus [104]. This substantially reduced power requirements of the pressure pumping arrangement [106]. Accordingly, the pressure pumping arrangement [106] of low power rating can also be used for the purpose. Moreover, such automatic activation of the pressure pump [118] by the control unit [120], removes unnecessary burden on the user for manual activation of the pressure pump [118] when required. It may further be noted that the pressure pump [118] disclose herein is dedicatedly for the operations of the water purification apparatus [108], and therefore is directly connected to the inlet port [114a] of the control valve unit [114] of the sand filter apparatus [108], with use of the at least one clip arrangement. With use of such clip arrangements [122], the pressure pump arrangement [118] is supported on the control valve unit [114] of the sand filter apparatus [108], and thus avoiding a need of floor space for mounting and installation.
Furthermore, after delivering the water at the increased pressure levels to the sand filter apparatus [108], the sand filter apparatus [108] and the sediment filter apparatus [110] in combination performs one or more actions, corresponding to the mode of operation of the sand filter apparatus [108]. For example, in the service mode of operation, the sand filter apparatus [108] performs the first level of filtration and outputs water to the sediment filter apparatus [110], and the sediment filter apparatus [110] performs second level of filtration, for outputting purified water. Similarly, in the backwash mode of operation, the sand filter apparatus [108] passes the water therethrough and outputs waste-water to the drain line. As the water is received at increased pressure level, the water purification apparatus [104] is capable of efficiently performing its operations.
In the following description, for the purposes of explanation, various specific details are set forth in order to provide a thorough understanding of embodiments of the present invention. It will be apparent, however, that embodiments of the present invention may be practiced without these specific details. Several features described hereafter can each be used independently of one another or with any combination of other features. An individual feature may not address any of the problems discussed above or might address only one of the problems discussed above. Some of the problems discussed above might not be fully addressed by any of the features described herein. Example embodiments of the present invention are described below, as illustrated in various drawings in which like reference numerals refer to the same parts throughout the different drawings.
List of Components:
100 - Water purifying system
102 – Water Source
104 – Water purifying apparatus
106 - Pressure Pumping Arrangement
108 - Sand filter apparatus
110 – Sediment filter apparatus
112 – Filter Unit
112a - Cylindrical Housing,
112b - Inner Cylindrical Filter
112c - Sand Bed
112d - Inner Core
112e - Inner Passage
112f - Outer Passage
112g – Core Passage
114 – Control Valve Unit
114a - Inlet Port
114b - Outlet Port
114c - Drain Port
114d - Flow Passages
114e - Flaps
116 – Common Electric Supply
118 – Pressure Pump
120 – Control Unit
,CLAIMS:I/We Claim:
1. A water purifying system [100], comprising:
a water source [102];
a water purifying apparatus [104]; and
an inline pressure pumping arrangement [106], comprising:
a pressure pump [118] fluidly disposed between the water source [102] and the water purifying apparatus [104], and positioned proximal to the water purifying apparatus [104], such that the water source [102] supplies water to the water purifying apparatus [104] through the pressure pump [118]; and
a control unit [120] electrically connected to the pressure pump [118], the control unit [120] being adapted to activate the pressure pump [118] as a pressure of the water supplied from the water source [102] reaches below a threshold value,
wherein the pressure pump [118] is adapted to receive water from the water source [102], increase the pressure of the water above the threshold value, and supply the water at increased pressure to the water purifying apparatus [104], when activated.

2. The water purifying system [100] as claimed in claim 1, wherein the water purifying apparatus [104] is a combination of a sand filter apparatus [108] and a sediment filer apparatus [110], fluidly connected together to perform filtration of water as received from the water source [102] through the pressure pump [118] of the inline pressure pumping arrangement [106].

3. The water purifying system [100] as claimed in claim 1, wherein the sand filter apparatus [108] of the water purifying apparatus [104] performs a first level of filtration of water as received from the water source [102] through the pressure pump [118] of the inline pressure pumping arrangement [106], while the sediment filer apparatus [110] of the water purifying apparatus [104] performs a second level of filtration of water as received from the water source [102] through the pressure pump [118] of the inline pressure pumping arrangement [106].

4. The water purifying system [100] as claimed in claim 1 and claim 3, wherein the sand filter apparatus [108] of the water purifying apparatus [104] includes a filter unit [112] and a control valve unit [114], such that the control valve unit [114] operates the filter unit [112] of the sand filter apparatus [108] in one of a service mode, a backwash mode, and a rinse mode.

5. The water purifying system [100] as claimed in claims 1-4, further includes a common electric supply [116] electrically connected to supply power to each of the control valve unit [114] of the sand filter apparatus [108] of the water purifying apparatus [104] and the control unit [120] of the inline pressure pumping arrangement [106].

6. The water purifying system [100] as claimed in claim 1-5, wherein the control unit [120] of the inline pressure pumping arrangement [106] is electrically connected to the control valve unit [114] of the sand filter apparatus [108], to determine the mode of operation of the sand filter apparatus [108].

7. The water purifying system [100] as claimed in claim 1-6, wherein the control unit [120] of the inline pressure pumping arrangement [106] determines the pressure of the water as supplied from the water source [102].

8. The water purifying system [100] as claimed in claim 1-7, wherein the control unit [120] of the inline pressure pumping arrangement [106] activates the pressure pump [118] of the inline pressure pumping arrangement [106], upon determination of the operation of the filter unit [112] of the sand filter apparatus [108] in one of the service mode, the backwash mode, and the rinse mode and upon determination of the pressure of water being below the threshold value.

9. The water purifying system [100] as claimed in claim 1-8, wherein the threshold value of pressure of the water is variable, and can be manually adjusted by operating a knob connected to the control unit [120] of the inline pressure pumping arrangement [106].

10. The water purifying system [100] as claimed in claim 1-7, wherein the threshold value of pressure of the water is 1.5 bar.