FORM -2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See Section 10; rule 13)
VERTICAL SUMP PUMP
KIRLOSKAR BROTHERS LTD.
an Indian Company of Udyog Bhavan, Tilak Road, Pune 411 002,
Maharashtra, India.
INVENTORS:
1. PAUL KEDAR PRAKASH; 2. PAUL VIJAY HAMBIRRAO;
3. PAUL MAHESH VIJAYKUMAR; 4. SUTAR PRAMOD BASAVANT;
5. KALE GOVIND BALKRISHNA; 6. THAKUR MAHADEV GANESH;
7. SHINDE SHARAD BABASAHEB; 8. AGARKAR SUNIL BALWANTRAO
THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE INVENTION AND THE MANNER IN WHICH IT IS TO BE PERFORMED.

Field of the Disclosure:
The present disclosure generally relates to pumps.
Particularly, the present disclosure relates to vertical sump pumps.
Background:
A pump is a device used to move fluids, such as liquids, slurries and the like. Vertical process sump pumps are widely used in the process industries, such as chemical industries, petrochemical industries, refineries and the like. Depending upon nature of liquid handled, temperature of the liquid, specific gravity, viscosity, environmental conditions, these vertical sump pumps are manufactured of various materials. Liquid handled by these kinds of pumps is of various types like water, raw water, juice, petrol, diesel, kerosene, acids, mixed acids and the like. These pumps can handle liquids of varying temperature. Length of vertical sump pumps can be varied up to 6 meters. As compared to horizontal pumps, vertical process sump pumps require less floor space, zero leakage and can operate over fluctuating liquid level.
Being a process pump, vertical sump pumps are heavy in weight. Major parts of these pumps are column pipe, delivery pipe, pump casing, casing cover support plate and motor stool. Although, the conventional vertical sump pumps are useful for pumping liquids in various process industries, the conventional vertical sump pumps have numerous limitations. For example, the conventional vertical sump pumps are difficult to handle. Further, the conventional vertical sump pumps are difficult to assemble and dis-assemble. Further, the

conventional vertical sump pumps generate lots of vibrations. Furthermore, the conventional vertical sump pumps are heavy in weight.
Accordingly, there is need of a vertical sump pump that is easy to handle and assemble. Further, there is a need for a vertical sump pump that can be assembled without requiring skilled labour and that requires less time for assembling. Furthermore, there is a need for a vertical sump pump that requires less space for assembling. Still further, there is a need for a vertical sump pump that is light in weight and inexpensive. Furthermore, there is a need for a vertical sump pump that can be easily manufactured. Also, there is need of a vertical sump pump that is easy to assemble and dis-assemble. Further, there is need of a vertical sump pump that comparatively reduces the vibrations. Furthermore, there is need of a vertical sump pump that is light in weight. Moreover, there is need of a vertical sump pump that reduces maintenance time.
Objects:
Some of the objects of the present disclosure which at-least one embodiment is able to satisfy, are described herein below:
It is an object of the present disclosure to ameliorate one or more problems of the prior art or to at least provide a useful alternative.
An object of the present disclosure is to provide a vertical sump pump that is easy to handle.

Another object of the present disclosure is to provide a vertical sump pump that is easy to assemble and dis-assemble.
Yet another object of the present disclosure is to provide a vertical sump pump that comparatively reduces the vibrations.
Further, an object of the present disclosure is to provide a vertical sump pump that is light in weight.
Furthermore, an object of the present disclosure is to provide a vertical sump pump that reduces maintenance time.
Moreover, one more object of the present disclosure is to provide a vertical sump pump that requires less maintenance cost.
Also, an object of the present disclosure is to provide a vertical sump pump that is comparatively less expensive.
SUMMARY
A vertical sump pump assembly for pumping fluid from a fluid reservoir is disclosed in accordance with an embodiment of the present disclosure. The vertical sump pump assembly includes a motor stool, a drive shaft, an impeller, a casing cover, and a delivery pipe. The motor stool defines an enclosure for a motor and is disposed outside the fluid reservoir. The drive shaft is connected to the motor and is driven thereby. The drive shaft extends operatively downwards from the motor. The impeller is secured to an operative bottom end of the drive

shaft and is driven by the motor via said drive shaft. The casing encloses the rotating impeller, thereby pressurizing the fluid received therein. The casing includes a fluid inlet and a fluid outlet. The fluid inlet is immersed in fluid in the fluid reservoir and facilitates inflow of fluid inside the casing. The fluid outlet dispenses pressurized fluid. The delivery pipe is connected to the fluid outlet and is extending along the drive shaft for receiving pressurized fluid leaving the fluid outlet and delivering the fluid to an outlet.
Typically, the vertical sump pump assembly further includes a support plate for supporting the motor stool thereon, wherein the support plate is provided with a first cavity configured for facilitating passage of the drive shaft and a second cavity for facilitating passage of delivery pipe extending to the outlet.
Generally, the vertical sump pump assembly further includes a support structure disposed along the drive shaft for supporting the drive shaft.
Preferably, the support structure includes a plurality of bearing spiders with each bearing spider having a centrally disposed aperture for facilitating passage of the drive shaft there-through and a plurality of apertures disposed around the central aperture for receiving a plurality of tie rods.
Generally, the fluid inlet is centrally disposed on the casing cover.
Particularly, the fluid outlet is disposed along a periphery of the casing cover.

Typically, the vertical sump pump further includes a coupling elbow for facilitating coupling between the outlet of the casing cover and the delivery pipe.
Brief Description of the Accompanying Drawings:
The disclosure will now be explained in relation to the accompanying drawing, in which:
Figure 1 illustrates a perspective view of a conventional vertical sump pump;
Figure 2 illustrates a perspective view of a vertical sump pump, in accordance with one embodiment of the present disclosure;
Figure 3 illustrates a perspective view of a column pipe construction of the conventional vertical sump pump;
Figure 4 illustrates a perspective view of a tie rod construction of the vertical sump pump of the present disclosure as shown in Figure 2; Figure 5 illustrates a front view of the tie rod of the vertical sump pump of the present disclosure as shown in Figure 2
Figure 6 illustrates a perspective view of a casing cover of the conventional vertical sump pump of Figure 1;

Figure 7 illustrates a perspective view of a casing cover of the vertical sump pump of the present disclosure as shown in Figure 2;
Figure 8 illustrates a perspective view of a bearing spider of the conventional vertical sump pump of Figure 1;
Figure 9 illustrates a perspective view of a bearing spider of the vertical sump pump of the present disclosure as shown in Figure 2;
Figure 10 illustrates a perspective view of a stuffing box housing of the conventional vertical sump pump of Figure 1;
Figure 11 illustrates a perspective view of a split gland of the conventional vertical sump pump of Figure 1; and
Figure 12 illustrates a perspective view of an adapter plate of the conventional vertical sump pump of Figure 1.
Detailed Description of the Accompanying Drawings:
The disclosure will now be described with reference to the accompanying drawing which does not limit the scope and ambit of the disclosure. The description provided is purely by way of example and illustration.
The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the following description. Descriptions of well-known components and processing techniques are

omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
Referring to Figures 1, 3, 6, 8 and 10 to 12, a conventional vertical sump pump 10 is disclosed. The conventional vertical sump pump 10 includes a motor stool 12, a support plate 14, a bearing spider 16, a delivery pipe 18, a column pipe 20, a casing cover 22, a bend 24, a pump casing 26, a stuffing box housing 28 (shown in Figure 10), a split gland 30 (shown in Figure 11) and an adaptor plate 32 (shown in Figure 12). The support plate 14 of the conventional vertical sump pump 10 is large and heavy. The column pipe 20 has comparatively more weight.
Although, the conventional vertical sump pump 10 is useful for pumping liquids in various process industries, the conventional vertical sump pump 10 has numerous limitations. For example, the conventional vertical sump pump 10 is difficult to assemble and dis-assemble. Further, the conventional vertical sump pump 10 generates lots of vibrations. Furthermore, the conventional vertical sump pump 10 is heavy in weight. Also, the conventional vertical sump pump 10 requires more space.
Referring to Figures 2, 4, 5, 7 and 9, a vertical sump pump 100 of the present disclosure is disclosed to alleviate the problems of the conventional vertical sump pump 10. The vertical sump pump 100 includes a motor stool 102, a support plate 104, a tie rod mechanism 106, a casing cover 108 and a bearing spider 110 (shown in Figure 9). The vertical sump pump 100 has several advantages over the vertical

sump pump 10 known in the prior art. For example, the vertical sump pump 100 can be assembled without requiring skilled labour and requires less time for assembling. The the vertical sump pump 100 may be assembled in about 1 hours time using skilled labor and the same can be assembled in about 1.3hrs using unskilled labor. Furthermore, the vertical sump pump 100 requires less space for assembling. Still further, the vertical sump pump 100 is light in weight and inexpensive. Furthermore, the vertical sump pump 100 can be easily manufactured.
The support plate 104 of the present disclosure has compact structure. In accordance with an embodiment, the support plate 104 is having a dimension 790X560X32 and accordingly, results in better space utilization. Due to compact structure of the support plate 104 weight of the support plate 104 is comparatively less. The size of the support plate 104 is made compact with respect to a delivery pipe size by reduction in length and weight. The weight reduction of 30 to 40 percent of the support plate 104 contributes to 10 to 15 percent of overall weight reduction of the vertical sump pump 100 of the present disclosure.
The vertical sump pump 100 of the present disclosure, replaces the column pipe 20 of the conventional vertical sump pump 10 with the tie rod mechanism 106. The tie rod mechanism 106 has comparatively very less weight as compared to the column pipe 20. The tie rod mechanism 106 can be easily machined, assembled and disassembled as compared to the column pipe 20. Maintaining inventory for the tie rod mechanism 106 is comparatively easy as storage place requirement is very less. Single person can assemble the vertical sump pump 100 of the present disclosure very easily that includes the tie rod mechanism 106 as compared to requirement of two persons for the assembly of the column pipe 20 of the conventional vertical sump pump 10. Number of bolts and nuts requirement is reduced to four as

compared to eight numbers of fasteners per bearing spider required for the construction of the column pipe 20. Hence reduction in fasteners is achieved. Hence as the column length increase, number of bearing spiders also increases and number of fasteners decrease. A user can identify damaged bearing bush under bearing spider easily without dismantling the assembly.
Referring to Figure 7, the casing cover 108 is adapted to accommodate the tie rod mechanism 106 in the casing cover 108. The casing cover in accordance with the present disclosure e is having a simple structure and is easy to manufacture. Due to simple structure of the casing cover, the machining time per piece is reduced. The casing cover 108 includes four tapped holes with an intermediate step for ensuring exact length of the tie rod mechanism 106. The tie rod mechanism 106 has to be just screwed in the casing cover 108 for configuration of assembly.
Referring to Figure 9, the bearing spider 110 is adapted to accommodate the tie rod mechanism 106 in respective positions. The bearing spider 110 used in the vertical sump pump 100 of the present disclosure has improved design and eliminates the ribs that were earlier present, accordingly, the bearing spider 110 is lighter in weight and requires less time for machining. The bearing spider 110 typically requires about 3 hrs for machining thereof. For every bearing spider 110 four tie rods are configured from top side and four tie rods are configured from bottom side. Positive locking is provided by stepped holes in the bearing spider 110 for upper tie rods. Every tie rod at bearing spider is double locked by nuts at end.
The vertical sump pump 100 of the present disclosure includes a rigid bearing housing instead of the stuffing box housing 28 of the conventional vertical sump pump 10, according the stuffing box housing and hassles associated with it's

assembly are eliminated in the vertical sump pump 100 of the present disclosure. Accordingly, the assembly time and the number of fasteners required for assembling the vertical sump pump 100 is reduced considerably. A care is taken to maintain a close tolerance in fitment of the housing to avoid elimination of gases/fumes or vapor if any present inside a tank from escaping in atmosphere. As the stuffing box housing 28 is eliminated and bearing location is lowered a lot of space remains in the motor stool 102 of the present disclosure. Hence reduction in height of the motor stool 102 and length of the head shaft/ drive shaft is achieved. In accordance with an embodiment a head shaft having dimension of about 619 mm is used in the vertical sump pump 100 instead of head shaft having dimension of about 858 mm as is used in the conventional vertical sump pump 10. Further, a gland packing, the split gland 30, a lantern ring, a cover of stuffing box housing, the adaptor plate 32 are eliminated that are present in the convention conventional vertical sump pump 10. Fasteners required for these parts are also eliminated. Accordingly, the vertical sump pump 100 of the present disclosure requires less number of fasteners.
The vertical sump pump 100 of the present disclosure is portable by reduction of number of parts. The tie rod mechanism 106, shafts and all other parts of the vertical sump pump 100 of the present disclosure can be packed in a bag and easily transported. Apart from various applications of a vertical sump pump, the vertical sump pump 100 of the present disclosure is used for moving clear liquids.
Technical Advancements and Economic Significance
The vertical sump pump of the present disclosure is easy to handle. Also, the vertical sump pump of the present disclosure is easy to assemble and dis-assemble.

Additionally, the vertical sump pump of the present disclosure comparatively reduces the vibrations. Further, the vertical sump pump of the present disclosure is light in weight. Furthermore, the vertical sump pump of the present disclosure reduces maintenance time. Moreover, the vertical sump pump requires less maintenance cost. Also, the vertical sump pump of the present disclosure is comparatively less expensive
The numerical values given of various physical parameters, dimensions and quantities are only approximate values and it is envisaged that the values higher or lower than the numerical value assigned to the physical parameters, dimensions and quantities fall within the scope of the disclosure and the claims unless there is a statement in the specification to the contrary.
Throughout this specification the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element, integer or step, or group of elements, integers or steps, but not the exclusion of any other element, integer or step, or group of elements, integers or steps.
The use of the expression "at least" or "at least one" suggests the use of one or more elements or ingredients or quantities, as the use may be in the embodiment of the disclosure to achieve one or more of the desired objects or results.
Any discussion of documents, acts, materials, devices, articles or the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of

these matters form a part of the prior art base or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application.
The numerical values mentioned for the various physical parameters, dimensions or quantities are only approximations and it is envisaged that the values higher/lower than the numerical values assigned to the parameters, dimensions or quantities fall within the scope of the disclosure, unless there is a statement in the specification specific to the contrary.
The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.

Claim:
1. A vertical sump pump assembly for pumping fluid from a fluid reservoir,
said pump comprising:
o a motor stool defining an enclosure for a motor, said motor stool
disposed outside the fluid reservoir; o a drive shaft connected to said motor and driven thereby, said drive
shaft extending operatively downwards from said motor; o an impeller secured to an operative bottom end of said drive shaft
and driven by said motor via said drive shaft; o a casing cover adapted to enclose said rotating impeller, thereby
pressurizing the fluid received therein, said casing comprising:
• a fluid inlet immersed in fluid in said fluid reservoir and adapted to facilitate inflow of fluid inside said casing; and
• a fluid outlet for dispensing pressurized fluid; and
o a delivery pipe connected to said fluid outlet and extending along said drive shaft for receiving pressurized fluid leaving said fluid outlet and delivering the fluid to an outlet.
2. The vertical sump pump assembly as claimed in claim 1, further comprising a support plate for supporting said motor stool thereon, wherein said support plate provided with a first cavity configured for facilitating passage of said drive shaft and a second cavity for facilitating passage of delivery pipe extending to said outlet.
3. The vertical sump pump assembly as claimed in claim 1, further comprising a support structure disposed along said drive shaft and adapted to support said drive shaft.
4. The vertical sump pump assembly as claimed in claim 1, wherein said support structure comprises a plurality of bearing spiders with each

bearing spider having a centrally disposed aperture for facilitating passage of said drive shaft there-through and a plurality of apertures disposed around said central aperture for receiving a plurality of tie rods.
5. The vertical sump pump assembly as claimed in claim 1, wherein said fluid inlet is centrally disposed on said casing cover.
6. The vertical sump pump assembly as claimed in claim 1, wherein said fluid outlet is disposed along a periphery of said casing cover.
7. The vertical sump pump assembly as claimed in claim 1 further comprising a coupling elbow for facilitating coupling between said outlet of said casing cover and said delivery pipe.