EP1944420A1 - 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.

The invention is based on the object to provide a compact lifting system of the type mentioned, which can be used 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 articulated axle, either the pump together with the pump stub or only the pump stub in the installed state of the pump can be pivoted back and forth relative to the pipe stub so that the adjustments between the staking position and the release position can be carried out conveniently. This is possible even in an underfloor lifting system, in which the sewer chamber through the cover upwards is closed, 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 for pivoting the pump with the pipe socket of the usual manner arranged on the pump housing handle can be used after the clutch is released (one-handed operation), or after releasing the clutch 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 in such manipulations does not have to be moved back and forth with the hand or the hands, but the pump is initially supported on the hinge axis during the manipulation.

In an expedient embodiment, the hinge axis for the pump is provided between a pump housing and the cover which closes the sewer chamber. Even with difficult access to the pump access to the manipulations are easy to carry out, since the hinge axis predetermines a predetermined pivoting direction of the pump with the pump nozzle. In these movements, not only the pump nozzle is pulled out of the pipe socket clean without damaging the seal, but it can also easily the pump nozzle back into the tight insertion position.

In a particularly advantageous embodiment, the hinge axis is provided only for the pump nozzle 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.

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 on the container wall or even be arranged 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 carry out a sufficiently large stroke between the release position and the insertion position or vice versa with a relatively small pivoting movement of the pump or the pump nozzle, it is expedient if the hinge axis above or below the axis of the pipe socket and at a distance from the container in the end of the pipe socket at least largely perpendicular 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 pump or 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.

In an expedient embodiment, the cover is formed from a fixedly sealed to the container wall collar and a downwardly aspiring pipe shaft 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 pipe shaft, and a lower suction-side part of the pump housing hangs freely 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.

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 against 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.

According to the invention, a joint axis G2 is provided either for the entire pump housing together with the pump nozzle 11 between the housing 1 and the cover 7 and the support flange 8 of the tube shaft 6 to pivot the pump to release the sealed plug connection between the pump nozzle 11 and the pipe socket 10 to be able to. 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.

Preferred is an embodiment of the invention, in which 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 respective hinge axis G1 or G2 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 sits 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 (18)

Lifting plant (H) for wastewater, in particular faecal wastewater, with a stationary, lateral pipe socket (10) having container (2) in which in a sewer chamber (B) a pump (P) is arranged, which has a pump nozzle (11) in the pipe socket (10) a tight plug connection position (C), by a releasable coupling (K) can be fixed thereto, and after releasing the coupling relative to the pipe socket (10) in a release position (A) can be brought, characterized in that the pump (P) is liftably positioned in an upper cover (7) of the sewer chamber (B), and at least one hinge with a hinge axis (G1, G2) is provided between the cover (7) and the pipe socket (10) which either the pump (P) with the pump nozzle (11) or the pump nozzle (11) between the plug connection position (C) and the release position (A) is movable. Lifting installation according to claim 1, characterized in that the articulation axis (G2) for the pump (P) is provided between a pump housing (1) and the cover (7). Lifting installation according to claim 1, characterized in that the articulation axis (G1) for the pump stub (11) between a pump housing (1) and the pipe socket (10) is provided, preferably on the pump housing (1). Lifting installation according to claim 1, characterized in that the pipe socket (10) is an outlet pipe socket of the container (2) and the pump nozzle (11) is a discharge nozzle of the pump (P). Lifting installation according to claim 1, characterized in that the releasable coupling (K), preferably, on the pipe socket (10) in the container (2) arranged clamping jaw closure (22, 23, 24). Lifting installation according to claim 1, characterized in that the hinge axis (G1, G2) above or below the axis of the pipe socket (10) and at a distance for lying in the container end of the pipe socket (10) at least substantially perpendicular to the axis of the pipe socket (10). Lifting system according to at least one of the preceding claims, characterized in that the mobility of the pump nozzle (11) and / or the pump (P) about the hinge axis (G1, G2) by a releasable chip removal device (27) can be blocked. Lifting installation according to claim 1, characterized in that the cover (7) consists of a collar fixed to the container wall with a downwardly projecting tube shaft (6) in which the housing (1) of the pump (B) is sealed so positioned that an upper part of the housing (1) with the pump nozzle (11) and the pipe socket (10) in the tube shaft (6), and a lower suction-side part of the housing (1) freely in the sewer (B) depends. Lifting system according to at least one of the preceding claims, characterized in that the housing (1) of the pump (P) between the housing (1) and the tube shaft (6), between the cover (7) and the container wall and between the pump neck ( 11) and pipe socket (10) arranged sealing elements (9, 20) relative to the container (2) is vibration and / or noise coupled. Lifting installation according to claim 3, characterized in that in the housing (1) of the pump (P) a stationary pump stub (31) is formed, which ends at a distance from the axis of the pipe socket (10) and extended by the separately formed pump stub (11) is, and that the hinge axis (G1) between the Pumpenstutzenstrangende and the pump nozzle (11) is arranged. Lifting installation according to claim 10, characterized in that the pump stub (11) has an externally spherical or partially cylindrical end (33) which sits in a spherical or partially cylindrical cup (32) at the pump stub end, preferably via an inserted seal (34), and the end (33) with a coupling ring housing (26) via clamping elements (27) in the pan (32) can be pressed. Lifting installation according to claim 11, characterized in that in the coupling ring housing (26) and at the end (33) of the pump nozzle (11) cooperating sheet stops (28, 35) are provided which extend concentrically to the hinge axis (G1). Lifting installation according to at least one of the preceding claims, characterized in that the pump stub (11) is designed as a pipe elbow and at the other end carries the sealing element (20) designed as a pointed end seal, for which a, preferably, conical receptacle (21) in the pipe stub (10) ) is provided. Lifting system according to at least one of the preceding claims, characterized in that cooperating Abdrückflächen (25) are provided on the Bügelspannverschluss (22, 23, 24) and the pump nozzle (11) with which when opening the Bügelspannverschlusses the pump nozzle (11) in the direction of Release position (A) is movable, preferably to the release position (A). Lifting system according to claim 12, characterized in that the release position (A) limiting stop (36) is provided, preferably integrally with the curved rib (28) of the pump nozzle (11). Lifting installation according to at least one of the preceding claims, characterized in that in the container (2) above the cover (7) an attachment part (4), preferably height-adjustable, is arranged, which carries a cover (5), and that between a cover passage (14 ) and a passage (16) in the cover (7) a pipe snorkel (15) is removably installed, preferably a pipe snorkel (15) formed from nested pipe sections. Lifting installation according to claim 16, characterized in that in the course of the pipe snorkel (15) between the cover passage (14) and the passage (16) in the cover (7) at least one drain tank (18) with at least one integrated insert part (19) z. B. an odor trap, a backpressure or a backpressure barrier is installed. Lifting system according to at least one of the preceding claims, characterized in that the container (2) is provided as an underfloor installation container with an outer mounting flange (3), and preferably, in the region of the mounting flange (3) is formed divisible.

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