EP2573285A1 - Waste water hoisting facility - Google Patents

Abstract

The system has a pump unit arranged at or in a collection container (2). The collection container comprises an attaching element that is provided at a rear side wall (8) of the collection container to fasten the collection container at a wall. The attaching element comprises two horizontally spaced apart retaining grooves (24), which are connected with a screw (30) that is attached at the wall. An adjustable screw is arranged vertically below and between the holding parts in a horizontal direction (H) to bear against the wall.

Description

The invention relates to a wastewater lifting plant with the features specified in the preamble of claim 1.

Wastewater lifting plants are used to raise and / or pump effluents, which are at a level below a sewer or sewer, to the level of the sewer. Such sewage lifting systems are known, for example, to pump condensate from heating systems in higher-lying sewers. Such sewage lifting plants usually have a collecting container in which a pump unit is arranged. The to be pumped or lifted wastewater flows into the sump. When the water level in the collecting container has reached a predetermined level, the pump unit is switched on via a level switch, for example a float switch, and the water or liquid is pumped out of the collecting container. If the fluid level in the reservoir returns to a predetermined lower level, the pump set is switched off again. It is known to design these sewage lifting systems so that they can be attached with their sump to a wall. With this attachment, it is important that the sewage lifting unit, and in particular its sump, is properly oriented horizontally in two directions so that the pump unit and level switch work as desired inside. Since the walls to which such sewage lifting stations are attached are not always straight, the orientation of the collection bin in two directions is often difficult.

In view of this problem, it is an object of the invention to provide an improved sewage lifting system, which allows for attachment to a wall easy alignment of their collection in two directions.

This object is achieved by a sewage lifting plant having the features specified in claim 1. Preferred embodiments will become apparent from the subclaims, the following description and the accompanying figures.

The wastewater lifting plant according to the invention, like known sewage lifting plants, has a collecting tank and at least one pump unit arranged on or in the collecting tank. In this case, the collecting container is designed so that liquid to be lifted or effluent to be discharged can flow into it. For this purpose, at least one inlet opening can be provided. The pump unit is designed to pump wastewater from the sump in a subsequent-βende output line and through this in a higher-lying sewer. To turn on and off the pump unit can be arranged in a known manner, a level switch, such as a float switch in the reservoir.

To be able to fasten the collecting container to the wall, the collecting container has, on at least one side wall, fastening means which are designed to fasten the collecting container to a wall. According to the invention, the fastening means are designed such that they have two horizontally spaced-apart holding elements in the upper region of the side wall. These holding elements are designed for connection to receiving elements mounted on the wall in each case. For example, the holding elements may be formed so that they screwed into the wall screw or behind a hook. The holding elements are preferably arranged in the upper region of the side wall, in particular in the region of the upper half, more preferably in the region of the upper third of the side wall of the collecting container.

According to the invention, the fastening means additionally have a supporting element. This is arranged vertically below the retaining elements. The holding element is thus located in the lower region of the side wall of the collecting container, in particular in the lower half of the side wall, more preferably in the lower third of the side wall. In addition, the support element is arranged in the horizontal direction between the two holding elements, preferably in the middle between the holding elements. The support element is designed so that it can be supported on a wall, d. H. can come to plant on a wall and so can support the sump against the wall. About the support element, the distance of the lower end of the collecting container can be adjusted from the wall. By a longer support member, the lower end of the collecting container can be further pushed away from the wall, by a shorter support member, the lower end of the side wall comes closer to the wall to which the collecting container is attached to lie. In this way, it is possible to horizontally align the sump in a direction transverse to the wall to which it is attached.

In order to make this alignment particularly simple, the support element preferably has a supporting surface provided for bearing on the wall, the distance of which from the side wall of the collecting container being adjustable. Thus, by adjusting the distance via suitable adjusting the horizontal alignment can be achieved. Alternatively, this would be possible by replacing the support element, if different lengths interchangeable support elements are provided.

Particularly preferably, the support element has a with its axis of rotation transverse to the side wall extending adjusting screw. By means of this screw, the support element can be extended and shortened in the direction transverse to the wall. For this purpose, a section of the set screw screws into or out of a counterpart. This counterpart is preferably mounted on the side wall of the collecting container. Alternatively, the support element itself may be telescopically formed, that is to say formed from two sections, one with an internal thread and one with an external thread, wherein the section with the external thread can be screwed into the section with the internal thread and unscrewed to the length of To vary support element.

Particularly preferably, the adjusting screw is engaged with a first axial end with a thread formed on the collecting container and a second, opposite axial end of the adjusting screw forms the supporting surface for engagement with the wall. The thread is preferably formed directly in the side wall of the collecting container or as a threaded insert. This is particularly useful when the collection container is made of plastic as an injection molded part. Then such a thread can easily form directly in the side wall or pour a threaded insert. In this case, however, thread and side wall are formed so that the thread does not form an opening to the interior of the collecting container, so that it is open towards the bottom and preferably only to the top. The thread on the collecting container is preferably formed as an internal thread, in which engages the screw with an external thread. However, a reverse configuration is conceivable in which a threaded bolt is attached to the side wall, that it extends transversely away from the side wall. On the threaded bolt, a support element can then be screwed, which has a corresponding internal thread. Depending on how far the threaded bolt engages in the internal thread, results in a different length of the entire support element. If an internal thread is formed on the side wall, then this is formed so long that there is sufficient adjustment by screwing in and out of the adjusting screw. That is, the internal thread must be so long that it can accommodate a sufficient length of the screw to shorten the support in the desired manner. Alternatively, a sufficiently long receiving space can be provided behind the internal thread, in which the adjusting screw can engage.

According to a preferred embodiment, the adjusting screw has an enlarged diameter diameter adjusting wheel which is rotatably connected to the adjusting screw, preferably integrally formed therewith. For example, set screw and thumbwheel can be integrally formed of plastic. The thumbwheel makes it easier to grasp the set screw so that it rotates, making it easier to adjust. Preferably, the thumbwheel is structured on its outer circumference, for example, corrugated, so that it can be easily grasped.

Particularly preferably, the thumbwheel on such a large diameter that the thumbwheel over a lower edge of the side wall of the collecting container protrudes. That is, the radius of the adjusting wheel is greater than the distance of the axis of rotation of the adjusting screw from the lower edge of the side wall. In this case, the lower edge of the side wall preferably also forms the lower edge of the collecting container. In this way, the screw is at the bottom of the collecting container with its thumbwheel, so that the wheel can be easily gripped from the bottom, even if the sump on the wall hangs. Thus, a slight adjustment of the screw is possible to align the sump horizontally in a direction transverse to the wall.

Overall, with the aid of a support element, which, as described above, is preferably designed as a set screw and the two holding elements created a three-point system. This three-point system has the advantage that the orientation of the collecting container in a direction transverse to the wall to which the collecting container is attached, is very simple, since only one support element must be adjusted or adjusted for this orientation. The arrangement of a single support element thus simplifies the alignment quite considerably.

In order to allow a horizontal orientation of the collecting container in the direction parallel to the wall, the two holding elements are further preferably designed such that they each allow a vertical adjustment of the position of the collecting container relative to a receiving element mounted on a wall. Ie. the holding elements make it possible to adjust the collecting container at the position of the holding element up and down. In this way, a horizontal alignment in the direction parallel to the wall is possible.

In order to enable the simple horizontal orientation of the collecting container in one or the two directions described, in the sewage lifting system, preferably in the lid dragonflies, as they are known spirit levels ago to be integrated so that can be read at the sewage lifting system itself, whether they are in the two directions are aligned correctly horizontally. For this purpose, two normal aligned dragonflies are then provided at the sewage lifting plant, preferably in its upper lid, one parallel to the wall, one transverse or normal to the wall.

In order to facilitate the adjustment of the holding elements relative to the wall-mounted receiving elements in a simple manner, the holding elements are preferably designed so that they each have an inclined to the horizontal extending downwardly directed support surface. With this bearing surface, the holding elements is located on a screw or a hook which forms the receiving element on or in the wall. The fact that this receiving surface is inclined to the horizontal, it comes with a displacement of the collecting container in the horizontal direction parallel to the wall to a lifting or lowering, depending on the direction of displacement. The horizontal, to which the bearing surfaces are inclined, is an axis or line of the collecting container or the wastewater lifting plant, which extends horizontally with correct positioning of the sewage lifting plant. Particularly preferably, the two holding elements are inclined in the opposite direction. If the bearing surfaces each rest on a receiving element, this has the effect that, in the case of a horizontal displacement on the one holding element, a displacement of the sewage lifting device upwards and simultaneously on the other holding element comes to a downward shift. In addition, the bearing surfaces need not be straight, but may also be curved, that is, for example, be formed concave or convex curved.

The bearing surfaces are preferably structured and in particular toothed. This embodiment prevents slippage of the bearing surfaces of the receiving elements, in particular screws or hooks on the wall. The screws or hooks come to lie in a tooth gap, so that the support surface can not be moved unintentionally in a direction parallel to the wall on the receiving element or can slip.

Particularly preferred is at least one of the two holding elements and, more preferably, both holding elements are formed integrally with the side wall of the collecting container. Preferably, the holding elements are formed on a rear side wall of the collecting container. In this case, the holding elements preferably have receiving surfaces which are spaced from the side wall, so that the holding elements of screw heads or hooks can be engaged behind and come to rest with the bearing surfaces on the screws or hooks. For this purpose, the holding elements may have a second wall spaced from the side wall, which forms the bearing surface on its underside and forms a gap between the side wall and this wall, in which a hook or screw head can engage. A one-piece design of the retaining elements on the side wall of the collecting container lends itself to when this is made as an injection molded part made of plastic.

According to a particular embodiment of the invention, the collecting container may have on its underside feet for setting up the collecting container. These feet can be detachable, so that they can be removed when the container is hung on a wall. The additional or optional attachment of feet has the advantage that the sump and thus the entire sewage lifting system can be set up as an alternative to the described wall mounting on the floor or other footprint.

Particularly preferably, the wastewater lifting plant is designed as a condensate lifting plant, in particular for use in a heating or air conditioning.

Fig. 1

eine Schnittansicht einer erfindungsgemäßen Abwasserhebeanlage in Form einer Kondensathebeanlage,

Fig. 2

eine rückseitige Ansicht des Sammelbehälters, und

Fig. 3

eine Schnittansicht quer zu der Ansicht in Fig. 1, welche den rückseitigen Bereich der Abwasserhebeanlage bei Anbringung einer Wand im Detail zeigt.

The invention will now be described by way of example with reference to the accompanying drawings. In these shows:

Fig. 1

a sectional view of a wastewater lifting plant according to the invention in the form of a condensate lifting system,

Fig. 2

a back view of the sump, and

Fig. 3

a sectional view transverse to the view in Fig. 1 , which shows the back area of the sewage lifting plant in detail when attaching a wall.

The wastewater lifting plant has a collecting container 2, which forms the lower part of the wastewater lifting plant. Through an inlet pipe 4 can be raised to wastewater, for example, condensate a heating system in the sump 2. The sump 2 has a bottom 6 of substantially rectangular shape, from which four side walls 8 extend substantially vertically upward at the side edges. On its upper side, the collecting container 2 is designed to be open and is closed by a cover 10. On the cover 10, a pump unit 12 is attached. The pump unit has an arranged below the lid 10 in the interior of the collecting container 2 pump 14 and an above the lid 10 arranged electric motor 16 which drives the pump 14 via a shaft not shown here. The pump 14 delivers water from the reservoir 2 in an outlet line 18. For switching on and off of the pump unit 12, that is, the electric motor 16, a arranged in the reservoir 2 float switch 20 is provided which the electric motor 16 in dependence of the liquid level inside of the collection container 2 turns on and off.

To correctly pump out the liquid or waste water from the collecting tank2 and to switch the electric motor on and off 16 to ensure about the float switch 20, it is necessary that the wastewater lifting plant is aligned horizontally with its collecting container 2, so that the bottom 6 of the collecting container 2 extends substantially horizontally in two directions. This can be done either by placing the collecting container with the feet 22 on a flat and level floor or by attachment to the wall.

For wall mounting are on a rear side wall 8, which in Fig. 2 is shown in a plan view, fastening means formed. The fastening means have two holding elements 24 located in the upper region of the side wall 8, that is to say in the upper third of the side wall 8. The two holding elements 24 are spaced apart in the horizontal direction, so that they are located near the side edges of the side wall 8. The holding elements are each formed by a wall 26 which extends substantially parallel to the side wall 8 on the outside thereof. The lower edge of this wall 26 is formed in each case as a support surface 28. The support surfaces 28 are formed toothed and extend inclined to the horizontal H, that is inclined to the bottom 6, which should extend horizontally with the correct orientation of the sump. In this case, the support surfaces 28 are inclined in opposite directions to the horizontal H, so seen in the horizontal direction H, the inner ends of the support surfaces 28 are located vertically higher than the outer ends. The bearing surfaces 28 serve to come to rest on a receiving element in the wall. In this example, the recording elements are as in Fig. 3 shown, screws 30 which are fixed in the wall 32. The screws 30 engage behind the walls 26 with their screw heads, so that the screw heads come to lie with their edges between the walls 26 and the side wall 8. In this way it is prevented that the collecting container can slip off the screws to the front.

Due to the inclined position of the bearing surfaces 28, a horizontal orientation of the collecting container 2 in a direction parallel to the wall 32 is possible. When the sewage lifting unit with the collecting tank 2, as in Fig. 2 shown on the screws 30 in Fig. 2 is moved to the left, the left end is in Fig. 2 of the collecting container 2 to move vertically downwards and the right end vertically upward. When the sump 2 is shifted to the right on the screws 30, the left end moves up and the right down. In this way, the horizontal alignment takes place in the direction parallel to the wall 32.

The fastening means have a third element, namely a support element in the form of a set screw 34. The adjusting screw 34 engages with its first axial end 36 in an internal thread 38 a. The internal thread 38 is formed in a threaded bush or nut, which is fastened or cast in the lower region of the side wall 8. Behind the side wall 8 in the region in which the internal thread 38 is arranged, formed by indentation of the bottom 6, a cavity 40 outside the interior of the collecting container 2, which receives the axial end 36 of the adjusting screw 34. The opposite second axial end 42 of the screw 34 forms a support surface or a support point 42, which comes to rest on the wall 32 and is supported there. In this way, the entire collecting container 2 is supported at its lower end on the wall 32.

As in Fig. 2 can be seen, the internal thread 38 is formed in the region of the lower third of the rear side wall 8 of the collecting container 2, that is vertically spaced down from the holding elements 24 and their contact surfaces 28. At the same time, the internal thread 8 in the horizontal center of the rear side wall eighth that is located centrally between the two holding elements 24. This is how a three-point system is created. As described above, via the inclined configuration of the contact surfaces 28, the horizontal alignment in the direction parallel to the wall 32. By turning the screw 34, the horizontal alignment takes place in the direction transverse to the wall 32. When the screw is unscrewed from the internal thread 38 to the outside , the distance between the wall 32 and the side wall 8 increases at the lower end of the collecting container 2. If the adjusting screw 34 screwed further into the internal thread 38, correspondingly reduces the distance. The collecting container 2 tilts about the contact points of the contact surfaces 28 on the screws 30th

In order to enable a simple turning of the adjusting screw 34, this is provided with a thumbwheel 44. The thumbwheel 44 has a larger diameter than the adjusting screw 34 and can therefore be better taken. The diameter of the setting wheel 44 is so large that its radius R is greater than the vertical distance a of the axis of rotation of the adjusting screw 34 from the bottom of the bottom 6. Thus, the thumbwheel 44 is down over the bottom of the bottom 6 before and can so even then easily taken and turned when the sump 2 already rests on the screws 30. Thus, the alignment can be done by rotating the adjusting wheel 44 after hanging the collecting container 2 on the wall 32.

To simplify the alignment, for example, at the top of the housing part 46, which covers the electric motor 16, dragonflies can be arranged in the manner of spirit levels.

LIST OF REFERENCE NUMBERS

2 -

Clippings

3 -

inlet pipe

6 -

ground

8th -

sidewall

10 -

cover

12 -

pump unit

14 -

pump

16 -

electric motor

18 -

exit line

20 -

float switch

22 -

stands

24 -

retaining groove

26 -

wall

28 -

bearing surface

30 -

screw

32 -

wall

34 -

screw

36 -

axial

38 -

inner thread

40 -

cavity

42 -

supporting

44 -

thumbwheel

46 -

housing part

H -

horizontal

a -

distance

R -

radius

Claims (14)

Sewage lifting plant comprising a collecting container (2) and at least one pump unit (12) arranged on or in the collecting container (2), the collecting container (2) being fastened on a side wall (8) for fastening the collecting container (2) to a wall (32) characterized in that
the fastening means comprise two horizontally spaced apart holding elements (24), which are designed for connection to a respective receiving element (30) attached to a wall (32), and a supporting element (24) arranged vertically underneath the holding elements (24) and horizontally therebetween ), which is designed to rest against a wall (32). Sewage lifting plant according to claim 1, characterized in that the support element (34) has a support surface (42) provided for abutment against the wall (32), the distance from the side wall (8) of the collecting container (2) is adjustable. Sewage lifting plant according to claim 2, characterized in that the support element has a with its axis of rotation transverse to the side wall (8) extending adjusting screw (34). Wastewater lifting plant according to claim 3, characterized in that the adjusting screw (34) is in engagement with a first axial end (36) with a thread (38) formed on the collecting container (2) and a second, opposite axial end of the adjusting screw (34) engages the supporting surface (34). 42) for engagement with the wall (32). Wastewater lifting plant according to claim 3 or 4, characterized in that the adjusting screw (34) has an enlarged diameter diameter adjusting wheel (44) which is non-rotatably connected to the adjusting screw (34). Wastewater lifting plant according to claim 5, characterized in that the adjusting wheel (44) has such a large diameter that the adjusting wheel (44) projects beyond a lower edge (6) of the side wall (8) of the collecting container (2). Sewage lifting plant according to one of the preceding claims, characterized in that the holding elements (24) are designed such that they each allow a vertical adjustment of the position of the collecting container (2) relative to a on a wall (32) mounted receiving element (30). Sewage lifting plant according to one of the preceding claims, characterized in that the holding elements (24) each have an inclined to the horizontal extending downwardly directed bearing surface (28). Wastewater lifting plant, characterized in that the bearing surfaces (28) of the two holding elements (24) are inclined in opposite directions. Sewage lifting plant according to claim 8 or 9, characterized in that the bearing surfaces (28) of the two holding elements (24) are inclined at the same angle to the horizontal. Wastewater lifting plant according to one of claims 8 to 10, characterized in that the bearing surfaces (28) are structured and in particular toothed. Wastewater lifting plant according to one of the preceding claims, characterized in that at least one of the two and preferably both holding elements (24) are formed integrally with the side wall (8) of the collecting container (2). Sewage lifting plant according to one of the preceding claims, characterized in that the collecting container (2) on its underside (6) feet (22) for erecting the collecting container (2). Sewage lifting plant according to one of the preceding claims, characterized in that it is designed as a condensate lifting system, in particular for use in a heating or air conditioning.

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