EP0907806B1 - Apparatus for collecting and/or treating and carrying away liquids, multiphase systems, or liquids containing lumpy substances, primarily waste water - Google Patents

Abstract

The device for conveying multiphase media, for example waste water, has a pump engine unit which contains an electric motor and a hydraulic unit fixed to the shaft thereof, the electric motor and the shaft being sealingly separated from each other within a common housing, and contains another hydraulic unit, the hydraulic units being fixed on one end or on the two ends of the shaft of the electric motor (2). The device for collecting and/or treating and carrying away liquids, multiphase systems or liquids containing lumpy materials, primarily waste water, has a container with inflow and drainage apertures, with a pump situated in the liquids chamber and with turbulence-generating elements, the pressure supports of the pump being connected with the drainage aperture of the container, the turbulence-generating element being a mechanical agitator (4) and roughened surfaces (35) in the liquids chamber being used to break up and comminute. The device for collecting and discharging multiphase media, primarily waste water, has a container fitted with a pipe for intake of waste water and a pipe for discharge of waste water and has inside the container a pump engine unit that contains an electric motor and a hydraulic unit fixed to the shaft thereof, the electric motor and the shaft being sealingly separated from each other within a common housing. The pump engine unit (1) has two hydraulic units which are fixed at one end or at the two ends of the shaft of the electric motor (2), and the shaft of the electric motor (2) is disposed horizontally or at an acute angle to the horizontal.

Description

The invention relates to a device for collecting and deriving multi-phase Wastewater through one with a wastewater discharge pipe and a wastewater discharge pipe provided container and in the container has a pump machine unit, wherein the pump machine unit is arranged in a common housing and separated from each other sealed an electric motor and two attached to its shaft has hydraulic units, the one hydraulic unit a pump and the another is a stirrer.

It is known that the homogenization, transport and treatment of lumpy substances, sludge, fats containing multiphase systems in the first place Difficulties in collecting and forwarding waste water.

The accumulating in sewage shafts or over-pumping units Liquid is a multi-phase system; it contains parts made of solids (paper, Razor blades, scraps), dirty water and get on the surface of the liquid accumulating fats. The solid parts and the sludge settle on the bottom of the shaft while the lighter components, including the fatty and oily substances, go up swim and solidify or be deposited on the wall of the shaft.

Similar problems also exist in agriculture and industry, mainly in the pharmaceutical industry when liquids of different densities in Emulsion, dry solids mixed in and the dispersions thickened and to be transported.

The machine units used to discharge wastewater are general Liquid pumps, slurry pumps or grinding pumps consisting of an electric motor and consist of a unit designed as a pump, which is arranged in a common housing and are separated from each other in a sealed manner.

The machine units or pumps currently used can the solidified and deposited fat layer not or only to a small extent, and the solid parts accumulating at the bottom of the shaft are deposited in dead spaces. To remedy this, it has been proposed to separate the components of the in the Wastewater located in the shaft through a continuous whirling movement of the incoming To manage wastewater. Such a solution is described for example in HU-B-210 443, according to which the bottom part of the collecting shaft as an asymmetrical rotating surface is formed and at the same time in the pump with the sewage outlet connecting piping spray nozzles are used. Such an asymmetrical The system according to DE-A-35 20 359 also contains a rotating surface.

A similar purpose arrangement is also in the Hungarian patent application No. 2670/92. There, the wastewater is tangent to the Collected manhole, and between the pump and the waste water discharge pipe T-profiles are attached, which also serve to recycle wastewater.

However, all of these solutions enable the treatment of what gets into the shaft Waste water, the separation, crushing and suction of the solidified Fat layer, also moving and loosening the in the bottom part of the shaft lumpy materials are not sufficiently effective.

For this purpose, several are generally separated in larger devices driven, immersed agitators used (see Flygt: submersible pump program, 10-560654.2b.fr2.0868.GR, column T *), which is obviously significant Increases in investment and operating costs.

Solutions are also known in which the agitating elements with the pump itself are connected, generally such that at the shaft end carrying the pump blades a stirring element is attached to the motor. Such solutions are among others in the patents EP-A-0110562, US-A-3 973 866 and DE-A-26 43 537. This Designing the pump that pumps the liquid has numerous advantages, however, the crushing of the lumpy substances in the liquid and their further transport by means of the pump remains problematic. In these cases it is mostly required to use a grinding pump or a pump with a large suction opening, that is able to transport these substances.

From US-A-3897600 is a waste water collecting container with it arranged pump machine unit known, the pump vertical is arranged in the container and the suction nozzle itself located below the pump. Pump and stirrer are on the same side of the motor provided, the stirrer disc-shaped Comminution plates and immediately above the Pump is arranged.

The aim of the present invention was to work out a solution that has all the advantages of the solutions listed guarantees, but also a safe, simple and cheap shredding of the wastewater to be pumped practically without the use of additional ones Energy enables. Another objective was to develop a solution that a deposit-free, self-cleaning, human intervention that does not require and reliable, cost-saving operation of such devices allowed. That was the Creation of a pump machine unit required, which, in to collect and Forwarding of multi-phase media operated objects, the separation of the Phases and settling of the heavier phases as well as solidification and deposition which prevents lighter greasy and oily phases.

The stated object was achieved with a device which has a container provided with a waste water inlet pipe and a waste water discharge pipe and a pump machine unit in the tank, the pump machine unit being arranged in a common housing and separated from one another in a sealed manner and separated from one electric motor and two fastened to its shaft has hydraulic units, one hydraulic unit being a pump and the other a stirrer. According to the invention, the shaft of the electric motor encloses an acute angle with the horizontal in such a way that the pump rises in the direction of its pressure port and the stirrer consists of at least one disk which is delimited by flat and / or curved surfaces and is provided with flow-stimulating elements and / or comminution elements consists.
The pump machine unit is expediently provided with one or more standing crushing elements fastened to the pump machine unit or to the wall delimiting the liquid space. The flow-waking elements and / or comminuting elements can be ribs, projections, depressions, wings, knives, smoked surfaces or grooves.
According to a preferred embodiment, the roughened surfaces are file-like surfaces or surfaces provided with hooks or saw teeth or perforated surfaces, the sharp burr of the perforation facing the liquid space.
The stirrer can be designed as a rotating basket, on the jacket and / or bottom of which there are openings. In another preferred embodiment, the stirrer is provided with a conical injector, the axis of rotation of which coincides with the axis of rotation of the stirrer and there is an annular gap between the edge of the injector having the larger diameter and the stirrer. In this case, an air supply pipe connects to the jacket of the injector.

In this way, the solution according to the invention simultaneously ensures suction of the multi-phase waste water at the optimal location, mixing at the desired location and optionally part of the cleaning in that the lumpy by stirring Materials and the sludge simultaneously with the function of the pump or in regular Periods are stirred up and loosened up, if necessary the extracted wastewater is mixed with a significant amount of air.

The device requires practically no maintenance, it is reliable, effective and cost-saving.

It was recognized that the shredding of particulate matter in the wastewater in one Container not only can be done directly, but also indirectly, by using the Shredding of the lumpy material is done by small tear elements, whereby the liquid from that by means of the flow-waking element of a stirring disc generated fast flow is moved, which carries the lumpy substances with it and / or rinses against the tear and shredding elements and in this way constantly crushed and crumbled.

This - referred to as indirect crushing - Process compared to conventional instant comminution basic advantages: significantly longer lifespan, considerable energy savings and Greater operational safety, since there is no risk of getting caught, jammed, or clogged consists. When used for wastewater treatment, there is the additional advantage that oxygen is introduced at the same time as the stirring and crushing.

Fig. 1

ist die Abbildung einer zweckmäßigen Ausführungsform der erfindungsgemäßen Lösung, zum Teil im Schnitt dargestellt,

Fig. 2

zeigt den bei der Ausführungsform gemäß Fig. 1 verwendeten Einsatz in perspektivischer Sicht,

Fig. 3

veranschaulicht eine mögliche Ausführungsform der aufgerauhten Fläche,

Fig. 4

stellt eine weitere Ausführungsform der aufgerauhten Fläche dar,

Fig. 5a

ist die Abbildung einer weiteren möglichen Ausführungsform der aufgerauhten Fläche im Schnitt, während

Fig. 5b

die Ausführungsform gemäß Fig. 5a in der Draufsicht darstellt,

Fig. 6

veranschaulicht noch eine mögliche Ausführungsform der aufgerauhten Fläche,

Fig. 7

stellt noch eine mögliche Ausführungsform der aufgerauhten Fläche dar und

Fig. 8

zeigt eine andere Ausführungsform der in Fig. 1 dargestellten Pumpe.

Further details of the invention are explained below with reference to exemplary embodiments with the aid of the drawings.

Fig. 1

is the illustration of an expedient embodiment of the solution according to the invention, partly shown in section,

Fig. 2

1 shows a perspective view of the insert used in the embodiment according to FIG. 1,

Fig. 3

illustrates a possible embodiment of the roughened surface,

Fig. 4

represents a further embodiment of the roughened surface,

Fig. 5a

is the illustration of another possible embodiment of the roughened surface in section, while

Fig. 5b

5a shows a top view of the embodiment according to FIG. 5a,

Fig. 6

illustrates another possible embodiment of the roughened surface,

Fig. 7

represents a possible embodiment of the roughened surface and

Fig. 8

shows another embodiment of the pump shown in Fig. 1.

In the embodiment shown in Fig. 1, the container is as a waste water collector Container 17 formed and provided with a lid 23. Located in its side wall there is a waste water inlet pipe 18, and at its bottom is an inclined bottom plate 31 appropriate. On the base plate 31 is the pump 3, the pressure port 9 with the waste water discharge pipe 19 of the container 17 is connected. At the the pressure port 9 facing away from the end of the pump 3 there is a stirring disk 12, which in this Embodiment moves the liquid in the container 17.

The pump 3 is not directly on the in the embodiment described here Bottom plate 31 arranged, but on a located at the bottom of the container 17 Commitment. This insert is shown in Fig. 2.

The insert 32 is essentially a container provided with a cylindrical jacket 33, the inclined bottom plate of the bottom plate 31 of the container 17 is adapted. The container 33 is provided with a handle 34, with the help of which it is inserted and again can be removed. According to an expedient embodiment, the Bottom plate of the container 33 with a cutout corresponding to the shape of the pump 3 provided so that the container 33 can be removed without moving the pump 3 have to.

The inside of the jacket is provided with a roughened surface 35. The roughened The surface can be of any design. Some examples are shown in Figures 3-7. Fig. 3 shows a file-like rough surface in section, Fig. 4 shows a sawtooth-like Roughness. 5a, 5b and 6 illustrate surfaces roughened by perforation. The area shown in FIG. 5 resembles a vegetable slicer in which the perforations are included Are provided.

A pointedly perforated surface is shown in FIG. The perforated areas are always formed so that the sharp ridge of the perforation faces the liquid space.

Fig. 7 shows a surface roughened by hooks, the hooks having the same shape have like the hooks of the so-called Velcro fasteners.

The roughened surface can optionally directly the inner surface of the container 17, but it is also possible to use special guide elements to roughen the surfaces fasten.

The system according to the invention works as follows.

The liquid to be treated or pumped (waste water) occurs in the generally discontinuously through the inflow opening into the container. As from Fig. 8, the pump is switched between the maximum and minimum levels of a float switch operated. As long as the pump is working, it will be in the tank liquid is stirred vigorously by the stirring disc, and the Lumpy materials and contaminants on the roughened liquid Areas constantly crushed. This leads to homogenization of the liquid, one Crushing the coarse contaminants while the pump pumps the liquid out of the Container removed.

By means of the solution according to the invention, pumping and pumping over multiphase wastewater with low maintenance, minimal human Intervention and great operational security can be made. In case of Wastewater treatment can process the wastewater in a complex manner from where it came to Place of cleaning are encouraged, and the system can be used with a minimum Energy expenditure to be kept clean. The deposition and adherence of fats and Similar substances are prevented, the lumpy materials are crushed, i.e. the Waste water is homogenized and treated before being pumped. The one with the pump assembled stirrer moves the liquid intensely and hits it on the expediently designed tearing and comminuting elements, whereby the of which with high-speed water loosened with torn pieces of cloth and be crushed.

This arrangement has the advantage that the stirring takes place at the bottom while at the top is suctioned off. This can cause those in the shaft to be dangerous for the pump Fabrics such as rubber, razor blades, rags, etc. in the pump will not damage cause. In addition, the part containing the most fat is always extracted.

Another advantage is that the liquid column in the pump is not can tear off because the motor is lower than the pump itself.

It is advisable to close the system with a relatively small difference in level operate so that the wall of the shaft always remains wet and the grease less dries up. Because of the small difference in level More frequent switching on and off promotes the clarification of the wastewater, and thereby the risk of rotting decreases.

Another advantage of the arrangement is that the waste water without Fluid delivery can be stirred. This makes the traditional one Systems eliminated, namely that the pump in the house collection shafts is proportionate rarely switches on, this means that the waste water there is seldom stirred, which leads to putrefaction and hinders the clarification process. The solution shown enables it to switch on the machine unit at certain intervals without waste water is pumped out of the system. The pump can also be used for a short time dry condition, and by stirring at regular intervals the wastewater treatment process is significantly accelerated, because it is independent Switching on and off from the liquid level at regular intervals here not only a stirring of the medium is guaranteed, but also the medium at the same time Ventilation. This is a fundamental innovation compared to the previous systems and an extraordinary advantage because it already makes part of the pumping system Wastewater treatment.

The cleaning effect can be further enhanced by the injector 24 shown in FIG. 8 increased pastures. The injector 24 sucks in the medium at its expanding side and presses it, accelerated by the stirrer 4, out on its narrower end and produces it in this way, in addition to ventilation, an extremely intensive flow of liquid.

The aeration effect can be enhanced if connected to the injector 24 Air inlet pipe 25 is connected. This ensures that ventilation also takes place when the liquid is at the highest (max. 2) level because that Air inlet pipe 25 always protrudes above the liquid level and the introduction of air at every liquid level, i.e. ensures an intensive mixing of waste water and air.

By using the system according to the invention, those for stirring and moving can be used liquid energy and device maintenance costs be significantly reduced. The device works extremely reliably because damage to the shredding, homogenizing elements is practically impossible is.

From the illustrated embodiments it can be seen that the invention combinable device compared to the conventional solutions numerous Benefits guaranteed. In the device, stirring, pumping and if necessary, the wastewater can also be aerated at the same time.

The solution according to the invention thus ensures a system that works simultaneously provides several functions with very good efficiency. The system is self-cleaning, requires virtually no human intervention, is reliable, and the investment and Operating costs are relatively low. Use in wastewater treatment and drainage systems enables wastewater to be pumped, pumped over and simultaneously partially cleaned. By stirring the. Regularly in the collecting shaft multiphase medium prevents one of the phases from becoming undesirable enriches.

The solution according to the invention also enables the pump machine unit containing not only when the prescribed level in Operation is set, but the stirrer located in the machine unit can in be switched on at regular intervals without damaging the pump becomes. This improves the quality of the treatment of what is in the shaft Wastewater significantly improved, because in this way the frequency of stirring and aeration does not depend on the speed of the wastewater supply, but on a regular basis Periods can be stirred and ventilated.

The solution according to the invention makes it possible for the first time that the Waste water during regular or regular stirring and pumping is also intensively ventilated.

For all these reasons, the device according to the invention is significantly more effective than the previous solutions of a similar character and ensures the creation economically operable systems.

Of course, the exemplary embodiments described serve only to: To illustrate invention. The invention itself can be carried out within the Defined scope of protection in numerous other variants will be realized.

Claims (6)

1. An apparatus for collecting and evacuating polyphase sewage comprising a recipient (17) provided with a sewage inlet tube (18) and a sewage outlet tube (19) and in the recipient (17) containing a pump and motor unit, wherein said pump and motor unit cosists of an electromotor (2) and two hydraulic units fastened on the shaft of said electromotor (2), said electromotor (2) and said hydraulic units are arranged in a common casing sealingly separated from one another, whereby one of said hydraulic units is a pump-up (3) and the other is an agitator (4), whereby said agitator (4) consists of at least one disc (12) defined by planes and/or embowed surfaces and provided with flow inducing elements and/or chippings breaker elements, characterized by that the shaft of said electromotor (2) is arranged to close an acute angle with the horizontal, that said pump-up ascends in the direction of its discharge flange (9).
2. Apparatus as claimed in Claim 1, characterized by that said pump and motor unit is provided with one or more standing comminution elements fixed on said pump and motor unit or on the walls defining a liquid storage spage.
3. Apparatus as claimed in Claims 1 or 2, characterized by that said flow inducing elements and/or comminution elements are ribs, projections, recesses, wings, blades, roughened surfaces or notches.
4. Apparatus as claimed in Claim 3, characterized by that said roughened surfaces (12) are rasper like surfaces or surfaces provided with hooks or sawteeth or perforated surfaces, wherein the sharper edges of said perforations are directed towards said liquid storage space.
5. Apparatus as claimed in any of Claims 1 to 4, characterized by that said agitator (4) is provided with a conical injector (24), the rotational axis of which coincides with the rotational axis of said agitator (4), and between the flange of larger diameter of said injector (24) an annular gap is formed.
6. Apparatus as claimed in Claim 5, characterized by that an air inlet conduit (25) is connectod to the mantle of said injector (24).

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