US-12618397-B2 - Pipe diverter valve housing for a thick matter pump and thick matter pump

US12618397B2US 12618397 B2US12618397 B2US 12618397B2US-12618397-B2

Abstract

An apparatus includes a pipe diverter valve housing and a pipe diverter valve. The pipe diverter valve housing includes a fixed housing part with inlet openings and a detachable housing part with an outlet opening. The detachable housing part is detachable from the fixed housing part, and the detachable housing part and the fixed housing part are pivotably connected to one another via a joint with a first pivot axis. The pipe diverter valve is mounted in the pipe diverter valve housing so as to be pivotable about a second pivot axis in front of the inlet openings and arranged to convey thick matter to the outlet opening of the pipe diverter valve housing.

Inventors

Waldemar Klassen

Assignees

SCHWING GMBH

Dates

Publication Date: 20260505
Application Date: 20230512
Priority Date: 20220518

Claims (8)

1 . An apparatus comprising: a pipe diverter valve housing comprising a fixed housing part with inlet openings and a detachable housing part with an outlet opening and an inclined lower plate, wherein the detachable housing part is detachable from the fixed housing part, wherein the detachable housing part and the fixed housing part are pivotably connected to one another via a joint with a first pivot axis; and a pipe diverter valve mounted in the pipe diverter valve housing so as to be pivotable about a second pivot axis in front of the inlet openings and arranged to convey thick matter to the outlet opening of the pipe diverter valve housing, the pipe diverter valve defining an S-pipe, wherein the inclined lower plate of the detachable housing part is positioned below the pipe diverter valve and positioned such that, when the detachable housing part is pivoted away from the fixed housing part, the pipe diverter valve is removable from the pipe diverter valve housing without colliding with the inclined lower plate.
2 . The apparatus of claim 1 , wherein the fixed housing part and the detachable housing part each have flat separating surfaces via which the fixed housing part and the detachable housing part are connected to one another.
3 . The apparatus of claim 2 , wherein the flat separating surfaces extend perpendicular to the second pivot axis of the pipe diverter valve.
4 . The apparatus of claim 2 , wherein the flat separating surfaces are formed by flange collars.
5 . The apparatus of claim 1 , wherein the joint pivotably connecting the fixed housing part and the detachable housing part to one another is arranged on an underside of the pipe diverter valve housing.
6 . The apparatus of claim 1 , wherein the first pivot axis of the joint is offset in a direction of the fixed housing part.
7 . The apparatus of claim 1 , wherein the fixed housing part has a cleaning opening on an underside of the fixed housing part.
8 . A two-cylinder thick matter pump with the apparatus of claim 1 .

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is a U.S. national stage application of International Application No. PCT/EP2023/062767, filed May 12, 2023, which claims priority to German Patent Application No. DE 10 2022 112 508.4, filed May 18, 2022, both of which are herein incorporated by reference in their entireties. The invention relates to a pipe diverter valve housing for accommodating a pipe diverter valve of a two-cylinder thick-matter pump, wherein the pipe diverter valve is mounted in the pipe diverter valve housing so as to be pivotable about a pivot axis in front of two inlet openings of the pipe diverter valve housing directed towards conveying cylinders and is designed to guide thick matter to an outlet opening of the pipe diverter valve housing, and to a two-cylinder thick matter pump with such a pipe diverter valve housing. Two-cylinder thick matter pumps have long been known in the state of the art for industrial applications, e.g. for pumping biowaste, sewage sludge and the like, but also, for example, as concrete pumps for pumping concrete on construction sites. In these thick matter pumps, the thick matter, i.e. the material to be conveyed, is alternately sucked in by two conveying cylinders driven by hydraulic cylinders, which open into a pipe diverter valve housing, and conveyed into a conveying line by means of a pipe diverter valve arranged in the pipe diverter valve housing. Due to their shape, so-called S-pipes, rock valves or C-pipes are used as pipe diverter valves for these thick matter pumps. The pipe diverter valves themselves, but also the seals of the pipe diverter valves to the inlets and outlets in the pipe diverter valve housing are subject to heavy wear and must be regularly maintained and replaced if necessary. It is known in particular from pipe diverter valves designed as S-pipes that they can only be removed from the pipe diverter valve housing with great effort for repair, maintenance or replacement because the S-pipe has to be lifted upwards out of the pipe diverter valve housing. A prior art S-pipe installed in a pipe diverter valve housing is shown in FIG. 1, for example. To remove the S-pipe, the feed unit arranged above the pipe diverter valve is first removed. The drive shaft and the bearing on the output side of the S-pipe are then removed. The S-pipe can then be lifted upwards out of the pipe diverter valve housing, for example suspended from a lifting eye, with a tilting movement to pull the outlet out of the outlet opening during lifting. It is therefore the task of the invention to provide a pipe diverter valve housing which at least partially solves the above-mentioned problems when removing or maintaining the pipe diverter valve of a two-cylinder thick matter pump. This task is solved by a pipe diverter valve housing for accommodating a pipe diverter valve of a two-cylinder thick matter pump and by a two-cylinder thick matter pump. Because the pipe diverter valve housing comprises a fixed housing part with the inlet openings and a housing part with the outlet opening that can be detached from the fixed housing part, the pipe diverter valve can be very easily removed, i.e. in particular pulled out, for maintenance and repair purposes after the two housing parts have been separated from each other. Due to this division of the housing, it is also advantageously no longer necessary to remove the feed unit arranged above the pipe housing in order to dismantle the pipe diverter valve. By using a joint that connects the two halves of the housing, the pipe diverter valve housing can be opened by pivoting the detachable half of the housing without having to remove the detachable half of the housing, for example with the aid of a load-lifting device. Advantageously, the fixed housing part and the detachable housing part of the pipe diverter valve housing each have flat separating surfaces via which the housing parts are connected to each other. Due to the flat separating surfaces, which in particular have no edges or strong bends, the two housing halves of the pipe diverter valve housing can be easily sealed against each other, for example by using a simple, also flat seal. According to an advantageous embodiment of the invention, the flat separating surfaces of the housing parts of the pipe diverter valve housing preferably run perpendicular to the pivot axis of the pipe diverter valve. This has the advantage that after removal of the detachable housing half, the pipe diverter valve can be pulled out of the fixed housing part in the direction of the pivot axis. Advantageously, the flat separating surfaces of the housing parts are formed by flange collars. This measure allows the two housing parts to be connected to each other very easily and tightly via the flange collars, for example using screw connections. According to an advantageous embodiment, the detachable housing part of the pipe diverter valve housing has an inclined lower plate below the p