EP1944420B1 - Hoisting system - Google Patents

Abstract

The system has a container (2), with stationary, lateral pipe connections (10), where a pump (P) is arranged in the container in a waste water chamber. The pump includes pump connections (11), which adopts a plug connection position in the pipe connection. The pump is liftably positioned in an upper cover (7) of the waste water chamber. An articulated joint with a joint axis is provided between the cover and the pipe connections, where either the pump with the pump connections or the pump connections is movable between the plug connection position and a release position.

Description

The invention relates to a lifting system specified in the preamble of claim 1. Art.

At the DE 41 16 680 C known pumping station, the pump is placed with its housing on the bottom of the container and the pump nozzle is pressed via the clutch designed as a clamp coupling in the pipe socket, which is mounted stationary in the container side wall. The pump nozzle is screwed into the housing of the pump and designed as a pipe elbow. The container can be closed above the pump housing. To remove the pump for cleaning or maintenance, the coupling is released and the relatively heavy pump is pushed parallel to the direction of the axis of the pipe socket on the bottom of the container until the pump nozzle has reached the release position. For this, however, enough space in the container is required, which precludes the effort to make the lifting system as compact as possible. In addition, contaminants deposited on the bottom of the container can make the movement of the pump considerably more difficult or impossible. Especially for so-called underfloor lifting systems, in which the container is installed in the ground and from above with built-in pump no access into the container is possible, this known principle can not be realized.

At one off DE 25 19 934 A known submersible pump is the drive above the lid of the container and is the pump housing with the trained as a pipe elbow pump nozzle in the liquid. The pump connection piece is detachably attached to the container pipe connection by means of a clamping strap closure that can be raised above the liquid level or placed above the liquid level. The container pipe socket and a part of the pump nozzle are formed as flexible tubes. The sealing end of the pump nozzle is slidably guided on the legs of a U-bracket and can be pressed by means of the U-bracket in the mouth of the container tube neck or swing out of this. To loosen the pump nozzle must be worked in the feces-containing container. When reconnecting the pump nozzle on the container pipe socket threading the pump nozzle is cumbersome.

At one off DE 20 59 353 A known pump for sewage wells, the pump nozzle is releasably connected via a flange with the container pipe socket. In order to manipulate the deeply arranged in the container flange coupling, upwardly extended clamping screws are provided, which are difficult to access when mounted on the lid of the container pump drive. Attaching the Pumpenstutzenflansches to the flange of the container pipe neck is difficult.

The invention has for its object to provide a compact lifting system of the type mentioned, which is useful as underfloor lifting system, and in which the insertion and removal of the pump is convenient to carry out, preferably even with a one-handed operation.

The stated object is achieved with the features of claim 1.

Due to the structurally integrated joint axis, the pump neck can be pivoted back and forth relative to the pipe socket in the installed state of the pump, so that the adjustments between the insertion position and the release position can be carried out conveniently. This is possible even in an underfloor lifting system, in which the sewer chamber is closed by the cover up, and an upper part of the pump housing, the pump nozzle and the pipe socket are placed above the cover. The handling is convenient because after loosening the coupling only the pump nozzle is pivoted (one-handed operation). Since the pump is installed suspended in the sewer chamber, impurities and the like lying at the bottom of the container can not appreciably impede these adjusting movements. The installation of the pump or its removal are comfortable and without significant impairment of odors or dirty water possible. The handling is also easy because the possibly high weight of the pump during such manipulations does not have to be moved back and forth with the hand or the hands. The hinge axis for the pump nozzle is provided between a pump housing and the pipe socket. To adjust the pump nozzle between the insertion and the release position only the pump nozzle needs to be pivoted back and forth. This can be done with a one-hand operation, as well as the release of the clutch. The cover is formed of a collar fixedly secured to the container wall and a tube shaft extending downwardly therefrom, in which the pump housing is sealed positioned so that an upper part of the pump housing lie with the pump nozzle and the pipe socket in the tube shaft, and a lower suction-side part of the pump housing freely suspended in the sewer chamber. Due to this design, the electrical connection area of the pump, in which sensor lines may be routed, as well as the moving parts of the coupling and the pump ports outside the sewer are placed dry, so to speak, where they hardly pollute.

Suitably, the pipe socket is an outlet nozzle of the container and the pump nozzle is a discharge nozzle of the pump. The waste water is sucked in freely by the pump in the sewer chamber and conveyed out of the tank through the pump nozzle and the overhead pipe socket.

The operation is convenient when the releasable coupling is arranged on the pipe socket Bügelspannverschluss. Alternatively, the Bügelspannverschluss could also be arranged on the container wall or even on the pump nozzle. It only need to be positioned according to the operation of the Bügelspannverschlusses cooperating components on the pipe socket and the pump nozzle.

In order to perform with a relatively small pivoting movement of the pump nozzle a sufficiently large stroke between the release position and the insertion or vice versa, it is advantageous if the hinge axis above or below the axis of the pipe socket and at a distance from the end of the pipe socket lying in the container at least substantially perpendicular lies to the axis of the pipe socket. In this way, favorable long lever arms are created relative to the hinge axis for the movement of the pipe socket.

In order to prevent leaks and uncontrolled intrinsic movements of the pump nozzle relative to the pipe socket, it is expedient if the mobility about the hinge axis can be blocked by a releasable clamping device. For disassembly and removal of the pump, the tensioner can be solved. After installing the pump, the clamping device may be tightened again.

A particularly important feature of the invention is that the pump housing via the arranged between the pump housing and the cover, between the cover and the container wall and between the pump nozzle and the pipe socket sealing elements against the container is vibration and noise coupled.

In this way it is avoided that possibly loud operating noise of the pump and also vibrations due to the flow dynamics are transmitted via the container into the ground and are perceived by occupants in the building.

Structurally expedient, a stationary pump stub is formed in the pump housing, which ends at a high distance from the axis of the pipe socket and is extended by the separate pump nozzle, wherein the hinge axis between the pump stub end and the pump stub is arranged. Thanks to this design, only the relatively short pump nozzle needs to be moved.

In terms of manufacturing technology and handling technology, the pump nozzle has a spherical or partially cylindrical end, which sits in a spherical or partially cylindrical socket at the pump nozzle end, preferably via an inserted seal, wherein the end can be pressed into the socket with a coupling ring and clamping elements. After releasing the clamping elements, the pump stub can be easily moved back and forth with a predetermined pivoting direction. The built-in seal prevents leaks in this transition area.

For the purpose of clean management of the pump nozzle during adjustment movements cooperating bow ribs or stops are provided in the coupling ring housing and at the end of the pump nozzle, which run concentrically to the hinge axis.

In an expedient embodiment of the pump nozzle is designed as a pipe elbow, which carries at the other end formed as a tip seal sealing element, for which a conical receptacle is provided in the pipe socket. The tip seal comes with the pivoting movement of the pump nozzle in clean sealing engagement with the conical receptacle. It can be chosen a relatively long overlap, since the pivoting movement of the pump nozzle allows a wide movement, the other end comfortably into the release position.

The handling is particularly convenient when cooperating Abdrückflächen or elements are provided on the temple clamping closure and the pump nozzle, with which when opening the Bügelspannverschlusses the pump nozzle is movable towards the release position, preferably even into the release position. The Abdrückflächen make it possible to solve solely by the movement of the tension bracket, possibly glued Spitzendemichtung from the receptacle of the pipe socket, and even possibly the pump nozzle to move fully into the release position without even having to attack the pump nozzle. The clamp of the band buckle closure has this favorably large lever arms, so that this manipulation with little effort is feasible.

Appropriately, limit stops acting around the articulation axis are provided, expediently in the case of the arcuate ribs or stops, in order to clearly define at least the release position of the pump stub so that the pump can then be lifted upwards without obstruction.

In a further expedient embodiment, a top part, preferably height-adjustable, arranged in the container above the cover, which carries a lid, wherein a Rohrschnorkel is removably installed between a cover passage and a passage in the cover. The pipe snorkel is preferably formed from nested pipe sections. The pipe snorkel makes it possible to guide other wastewater from above through the lid into the wastewater chamber and dispose of it with the pump.

Suitably, at least one drain tank with at least one integrated insert is installed in the course of the pipe snorkel between the cover passage and the passage in the cover. This insert may be a trap, a backflow trap or even a backwater dam. Other wastewater installation components can be used here, for example, to prevent the escape of wastewater in a backwater or nuisance by channel odors.

As an expedient embodiment of the lifting system, the container is provided as an underfloor installation container with an outer mounting flange and, preferably, formed divisible in the region of the mounting flange. This facilitates the assembly of the lifting system and allows the attachment to adapt the lifting system to different installation conditions.

Fig. 1

einen Vertikalschnitt einer Unterflur-Hebeanlage,

Fig. 2

eine perspektivische Teilansicht der Hebeanlage von Fig. 1, in einer Freigabestellung,

Fig. 3

einen vergrößerten Teilschnitt der Hebeanlage, in einer Einsteckposition, und

Fig. 4

eine Perspektivansicht, teilweise im Schnitt, zur Verdeutlichung vom internen Komponenten zur Ausbildung einer Gelenkachse für einen Pumpenstutzen der Pumpe der Hebeanlage.

Reference to the drawing, an embodiment of the subject invention will be explained. Show it:

Fig. 1

a vertical section of an underfloor lifting system,

Fig. 2

a partial perspective view of the lifting system of Fig. 1 in a release order,

Fig. 3

an enlarged partial section of the lifting system, in a plug-in position, and

Fig. 4

a perspective view, partially in section, to illustrate the internal components for forming a hinge axis for a pump nozzle of the pump of the lifting system.

An in Fig. 1 shown in-floor lifting system H for wastewater, especially sewage-containing wastewater, has a built-in soil in the container 2, in which on the container wall by means of a sealing element 9, a cover 7 is installed, which isolates a lying below in the container 2 sewer B upwards. The container 2 has a removable upper ring part 2a and an outer mounting flange 3, on which the seal can be installed, for example, in a screed or the like. From above, a shaft-shaped attachment 4 is inserted vertically adjustable, which carries a cover 5. In the lid, a grate 14 is provided as a cover passage, which is connected via a pipe snorkel 15 of nested tube parts with a passage 16 in the cover 7. Between the cover passage 14 and the passage 16 in the cover 17 at least one drain tank 18 is incorporated, in which an insert part 19 is integrated, for. As shown, an odor trap. However, additionally or alternatively, a backflow stop or a backpressure barrier or a similar insert part could be installed there. The pipe snorkel 15 is lifted out by means of a handle 17 after the cover 5 has been removed to provide free access to the cover 7 and to a pump P installed there.

In this embodiment, the cover 7 is formed integrally with a downwardly projecting tube shaft 6, which has a lower circumferential flange 8, in the opening of which a housing 1 of the pump P is inserted via a sealing element such that the housing 1 can be pulled upwards, is placed with an upper part in the tube shaft 6 and with a lower suction-side part hanging freely in the sewer B. On the housing 1, a handle 13 is formed to facilitate handling of the pump P. The pump P is pulled out in the direction of an arrow 30 substantially straight up if cleaning or maintenance are to be performed.

The pump P is compared to the container 2 vibration and noise decoupled via the sealing elements 9 between the cover 7 and the wall of the container 2 and between the support flange 8 and the housing 1, as well as a in Fig. 2 shown sealing element 20th

Wastewater runs into the sewer B through an inlet Z in the tank wall, and is pumped out by the pump through a spout A. The spout A is defined by a straight pipe socket 10, which is sealed in the housing wall and projects into the interior of the pipe well 6, i.e. placed above the support flange 8 of the pipe well. The pump P is connected on the pressure side via a pump nozzle 11 tightly with the pipe socket 10.

For the pump housing together with the pump nozzle 11, a hinge axis G2 between the housing 1 and the cover 7 and the flange 8 of the tube shaft 6 may be provided to pivot the pump to release the sealed plug connection between the pump nozzle 11 and the pipe socket 10 , This hinge axis G2 is defined by not shown in detail, formed on the housing 1 and / or on the support flange 8 components. The plugged into the pipe socket 10 or plugged pump nozzle 11 is fixed in the rest in the tight insertion position by a detachable coupling K, which is formed in the embodiment shown as a clamping strap closure (one-handed operation).

The pump is fixed in the insertion position on the one hand by its own weight and the press fit of the sealing element 9 in the support flange 8 and on the other hand anchored by the action of the clutch K engaged on the pipe socket 10, which in turn is fixed in the wall of the container 2. The mobility of the housing 1 about the hinge axis G2 can be blocked by a clamping device, not shown, and is only released for disassembly of the pump P.

According to the invention, a hinge axis G1 is provided between the pump nozzle 11 and the housing 1 in order to move only the pump nozzle 11 to move the pump nozzle 11 between the insertion position and the release position.

The hinge axis G1 is located below or above the axis of the pipe socket 10 and also spaced from the lying in the container 2 end of the pipe socket 10th

Fig. 2 shows a detail of the lifting system with in the release position F moved pump nozzle 11, ie, a solution with only the hinge axis G1. The sealing element 20 is designed as a pointed end seal, which fits into a conical receptacle 21 at the inner end of the pipe socket 10. The pump nozzle 11 is otherwise the discharge nozzle of the pump, while the pipe socket 10 is the outlet port of the container 2. The releasable coupling K is shown in the release position, and has a U-shaped clamping bracket 23 which is pivotable about an axis 22 back and forth and has Anzugsflächen for engaging behind lugs 24 on the pump nozzle 11. The pump nozzle is here pivoted to the release position, so that the pump P can be lifted on the housing 1 with the pump nozzle 11 upwards. Optionally, Abdrückflächen 25 are provided on the clamping bracket 23 which engage, for example, the pump nozzle 11 and the sealing element 20 when the clamping bracket 23 is pivoted to the release position shown, to release the insertion position and push out the sealing element 20 from the receptacle 21.

The lower end of the pump nozzle 11 is pressed by a coupling ring housing 26 against the housing 1 (clamping elements 27), on the one hand to provide the required tightness, and on the other hand, the pivoting movement, if desired, to block. In the in Fig. 2 shown release position, the clamping elements 27 are somewhat solved, so that the pump nozzle 11 could be easily pivot. To guide the pivoting movement provided in the coupling ring housing 26 and the pump nozzle 11 provided arch ribs or stops 28 cooperate (see also Fig. 4 ). The pump nozzle 11 is formed as a pipe elbow, the round end of which carries the sealing element 20, while the quadrangular in the main train other end is defined by the coupling ring housing 26.

Fig. 3 illustrates the insertion of the pump nozzle 11, the sealing element 20 has fully occurred in the receptacle 21 and produces the tightness. The releasable coupling K ie the clamping bracket 23 is still in the direction of the part 29 in the in Fig. 1 pivoted indicated locking position and then pulls the upper end of the pump nozzle 11 with emphasis in the receptacle 21. The lower end of the pump nozzle 11 is spherical or, as shown, partially cylindrical and is seated in a pan 32 corresponding spherical or partially cylindrical shape. A sealing frame 34, z. B. a square in the basic train O-ring seals between the surfaces. The coupling ring housing 26 presses the lower end 33 into the socket 32. The socket 32 is seated on an upper end 31 of a pump nozzle string 31 ', which is formed in the housing 1 and aligned with the end 33. The hinge axis G1 is located approximately in the indicated position.

In Fig. 4 a part of the coupling ring housing 26 is cut away to show that an arcuate rib or a stop 28 of the pump nozzle 11 abuts the bottom of an arcuate edge 35 of the coupling ring housing 26 to ensure a clean guidance of the pump nozzle 11 during the pivoting movements about the hinge axis G1 , The bow rib 28 may, as shown, be associated with a stop 36 which defines the release position shown. Fig. 4 also shows that between the vertical wall of the tube shaft 6 of the cover 7 and the inner wall of the container 2 additional sealing elements are used to interrupt a sound and vibration bridge in this area.

In addition, a not-shown wall sensor can be installed in the wastewater chamber B in the lifting plant H, which signals the maximum fill level and causes a fault signal when it is exceeded. The container B has, for example, a diameter of 450 mm at a height between about 500 and 600 mm. The storage volume of the wastewater chamber B is for example about 30 liters, while the limited by the maximum level pump volume is only 10 to 15 liters. This is an underfloor lifting system H, as is typically sufficient for a one- or two-family house. Instead of working with water level odor trap 19 and an odor barrier could be provided, which is closed. For the level in the wastewater chamber B, a float control of the pump could be provided. Furthermore, a pressure sensor can be installed, or a probe control. The ease of handling is high because a one-hand operation is possible to install or remove the pump. For this purpose, the lid 5 is removed with the pipe snorkel 15 to have access to the clutch K and the pump nozzle 11 conveniently from above.

Claims (15)

1. Hoisting system (H) for waste water, particularly waste water containing faecal matter, having a container (2) comprising a stationary lateral pipe socket (10), in which a pump (P) is arranged in a waste water chamber (B), said pump (P) comprising, on a pump housing (1), a pump socket (11) which assumes a sealed plugged-in position (C) in the pipe socket (10), is adapted to be secured thereto by a detachable coupling (K), and after the coupling has been detached can be brought into a release position (F) relative to the pipe socket (10), while moreover there is provided, on the pump housing (1), a joint with a joint axis (G1), about which the pipe socket (11) is movable between the plugged-in position (C) and the release position (F), and the pump (P) is positioned in an upper cover (7) of the waste water chamber (B) so as to be removable therefrom, characterised in that the cover (7) consists of a collar fixed in sealed manner to the container wall with a downwardly tending pipe shaft (6), in which the pump housing (1) is positioned in sealed manner such that an upper part of the pump housing (I) with the pump socket (11) and the pipe socket (10) are located above the cover (7) in the pipe shaft (6) and a bottom part of the pump housing (1) at the suction end is freely suspended in the waste water chamber (B).
2. Hoisting system according to claim 1, characterised in that the pipe socket (10) is an outlet pipe socket of the container (2) and the pump socket (11) is a pressure socket of the pump (P).
3. Hoisting system according to claim 1, characterised in that the detachable coupling (K) is a clamp-type closure (22, 23, 24) preferably arranged on the pipe socket (10) in the container (2).
4. Hoisting system according to claim 1, characterised in that the joint axis (G1) is located above or below the axis of the pipe socket (10) and at a spacing from the end of the pipe socket (10) located in the container, at least substantially perpendicularly to the axis of the pipe socket (10).
5. Hoisting system according to at least one of the preceding claims, characterised in that the mobility of the pump socket (11) and/or the pump (P) about the joint axis (G1) can be blocked by a releasable clamping device (27).
6. Hoisting system according to at least one of the preceding claims, characterised in that the housing (1) of the pump (P) is decoupled relative to the container (2) in terms of vibration and/or noise, by means of sealing elements (9, 20) arranged between the housing (1) and the pipe shaft (6), between the cover (7) and the container wall and between the pump socket (11) and pipe socket (10).
7. Hoisting system according to claim 1, characterised in that, in the housing (1) of the pump (P) is formed a stationary pump socket section (31) which terminates at a vertical spacing from the axis of the pipe socket (10) and is extended by the separately constructed pump socket (11), and in that the joint axis (G1) is arranged between the end of the pump socket section and the pump socket (11).
8. Hoisting system according to claim 7, characterised in that the pump socket (11) has a spherical or partly cylindrical end (33) on the outside which sits in a spherical or partly cylindrical dish (32) at the end of the pump socket section, preferably via an interposed seal (34), and in that the end (33) can be pressed into the dish (32) with a screw collar ring housing (26) by means of clamping elements (27).
9. Hoisting system according to claim 8, characterised in that arcuate abutments (28, 35) cooperating in the screw collar ring housing (26) and at the end (33) of the pump socket (11) are provided which extend concentrically with respect to the joint axis (G1).
10. Hoisting system according to claim 6, characterised in that the pump socket (11) is embodied as a pipe elbow and at the other end carries the sealing element (20) in the form of a spigot end seal for which a preferably conical receptacle (21) is provided in the pipe socket (10).
11. Hoisting system according to claim 3, characterised in that thrust surfaces (25) are provided on the clamp-type closure (22, 23, 24) and on the pump socket (11), by means of which the pump socket (11) can be moved towards the release position (F), preferably right into the release position (F), when the clamp-type closure is opened.
12. Hoisting system according to claim 9, characterised in that an abutment (36) is provided which limits the release position (F), and which is preferably formed in one piece with the arcuate rib (28) on the pump socket (11).
13. Hoisting system according to at least one of the preceding claims, characterised in that an attachment (4) is arranged, preferably so as to be vertically adjustable, in the container (2) above the cover (7), said attachment (4) having a lid (5), and in that an air intake tube (15) is removably installed between a passage (14) in the lid and a passage (16) in the cover (7), preferably an air intake tube (15) formed from tube sections that fit into one another.
14. Hoisting system according to claim 13, characterised in that along the path of the air intake tube (15) between the passage (14) in the lid and the passage (16) in the cover (7), is installed at least one discharge container (18) with at least one integrated insert (19) such as, for example, an odour trap, a backflow seal or backflow barrier.
15. Hoisting system according to at least one of the preceding claims, characterised in that the container (2) is in the form of a built-in underfloor container with a external installation flange (3) and is preferably designed to be divisible in the region of the installation flange (3).

Images