BRPI0802897A2 - modular pumps - Google Patents

Abstract

MODULAR PUMPS. The object of the present invention is to provide a modular pump (1) capable of being installed in series, having differentiated volute (11) and rotor (12), capable of allowing the entry of larger objects without causing damage to its system.

Description

"MODULAR PUMPS"

The present patent application relates to a modular pump with higher object intake capacity, used in the most diverse areas, more specifically in industrial fluid irrigation, sanitation and pumping systems.

Submerged pumps currently used in general fluid pumping systems present numerous maintenance problems as they do not allow the passage of long fibers. The pumps are installed in tiered level boxes as required. Due to the constant elevations in the pipeline, the construction of several collector boxes and the installation of these pumps are necessary to supply the entire area, whether industrial or basic sanitation network of a city.

In these collection boxes are stored all the waste that was dumped in the pipeline and not difficult to find diapers, absorbents, presective, hair. Due to the fiber size of these objects, the pump inlet is often clogged, causing it to be unable to pump.

Also due to the type of object found in these collection boxes, there is a smell and the appearance of methane gas, which in addition to unpleasant sensation can cause explosions if this methane comes into contact with any oxidizer.

To try to solve some of the problems presented above, there will be pumps manufactured by ABS and FLYGT companies that work in collector boxes. These pumps work in an upright position and have a rotor differentiated with two larger outlets, which allows the entry of larger objects, but due to their constructive shape, these objects usually get stuck in the navoluta and end up blocking the fluid passage causing blockage of fluid inlet. in the volute. Also the pumps manufactured by the above mentioned companies are pumps with armored, dry type electric motors, protected by a mechanical seal system. This type of construction does not allow to operate high compression, because the pressure of the liquid would break the seal letting in water nomotor, would damage the winding (would burn the motor), bearings, which would cause trimmed of the pump.

The maintenance of these equipments is also difficult because their handling, due to their dimensions and weight, in places of difficult access, because they are inside the collection boxes, being submerged inside the fluid, make the technical task costly, slow and risky.

Pumps of less power placed under the same conditions as previously described would not be successful, as they would not have the necessary power to carry the fluids at the required heights and distances, nor constructions appropriate to the intended use.

To try to solve the remaining technical problems, planteed application Pl 0103598-3 proposes a pump and a pumping system that can be buried (below) on the surface without the need for collection boxes and can be connected in series, ie it can be be coupled one pump to another (in series) directly in the piping system. However, in this configuration, the davoluta construction does not allow a larger object to be admitted, which causes, depending on the environment where the pump is being used, under constant maintenance.

The object of the present invention is to provide a modular pump (1) capable of being installed in series, having differentiated volute (11) and rotor (12), capable of allowing larger objects to enter the system without occasioning damage.

To achieve the above objective, the modular pump (1) proposed here is composed of an inlet, where we have the volute (11) and the rotor (12), from where it goes to, following the axis (15) of the motor (14), a centrifuge (13), integral with the shaft (15).

The invention as well as its objects and advantages may be better understood by reference to the description of the following preferred embodiments together with the attached figures, where:

Figure 1 is a cross-sectional front view of a bombamodular embodiment (1), where we can observe the location of the rotor (12), centrifuge (13) and motor (14);

Figure 2 is a detail of the centrifuge (13) where the holes (131) can be observed.

Figure 3 is a perspective view of the rotor (12), where we can observe the location of the two outputs (122) and the two flaps (123);

Figure 4 represents a top view of the rotor (12), where we can observe the allocation of the flaps (123);

Figure 5 is a perspective view of another embodiment of the bombamodular (1) in vertical direction;

Figure 6 is a cross-sectional front view of another embodiment of the bombamodular (1), where we can observe the location of the rotor (12) and the centrifuge (13), vertically.

The modular pump (1) presented here has the volute (11) and the rotor (12) with a constructive shape having rounded edges, which allows during its use that larger objects, such as diapers, absorbents, or any other long fiber, pass the rotor (12) without getting caught.

The rotor (12) has the fluid inlet coupled to the pump inlet, by the volute (11), in its perimeter we have two outlets (122). Looking at the rotor in isolation, we notice between the two outputs there are tabs (123). Due to the flaps (123), the centrifugal force arising during the movement of the rotor (12) prevents the creation of a fluid layer, usually with abrasive particles in the rotor body (12).

As the fluid passing through the rotor usually carries a certain amount of sand, there is solidarity with the shaft (15) in continuation of the rotor (12) a centrifuge (13).

The centrifuge (13), with the aid of centrifugal force, expels through the holes (131) that exist along its body the sand found in the fluid, preventing it from reaching the wear rings of the pump.

In a main configuration of the modular pump (1) shown here, the pump works horizontally, thus fluid enters the pump radially. In this configuration, the pump motor has been displaced and instead of being in the center of the pump it is above the center of the pump. pump (1), so that fluid and long fiber objects pass directly below the motor (14).

The modular pump (1) is mounted in continuation of the piping, without the need for special constructions, such as the collector boxes, and, if necessary, the modular pumps (1) can be mounted in series.

In a second embodiment of the modular pump (1) presented herein, we have the pump working vertically. In this case the fluid enters the vertical position in the pump, but it does not pass through the pump (1). In this case, displacement of the motor 14 is not necessary as the fluid exits through a side opening. It should be apparent to those skilled in the art that the present invention can be configured in many other specific ways without departing from the spirit or scope of the invention. . In particular, it should be understood that the invention may be configured in the forms described as long as the function presented herein remains.

Therefore, the examples and embodiments herein should be considered as illustrative and not restrictive, and the invention should not be limited to the details provided herein, but may be modified within the scope and equivalence of the appended claims.

Claims (4)

1. "MODULAR PUMPS", where the pump comprises a chamber in the interior of which a wet motor is located, characterized by a volute (11) and a rotor (12) with one inlet and at least two outlets (122) and two flaps ( 123) with rounded edges. "MODULAR PUMPS" according to Claim 1, characterized in that it has a centrifuge (13) with holes (131) along its body and integral with the shaft. "MODULAR PUMPS" according to claim 1, characterized in that the preferred embodiment has its motor displaced from the center. "MODULAR PUMPS" according to claim 1, characterized in that the outlets (122) are located transversely to the axis by imposing a centrifugal movement on the fluid.