DE10321427B4 - Pipe cleaning device and method for cleaning non-water pipes - Google Patents

Abstract

Pipe cleaning device, especially for one Pipe rehabilitation preparatory cleaning of a pipe (20), comprising a suction pipe (2) in which directed towards one end of the suction pipe (2) Nozzles (12) are arranged, characterized in that the nozzles (12) are formed on a nozzle body (3) mounted centrally in the suction pipe (2), the over a central hose connection (9), wherein between the nozzle body (3) and the inner wall of the suction tube, a passage (16) remains and the nozzles (12) arranged around the hose connection (9) aslant outward in an annular gap between one on the hose connection (9) connected Hose (10) and the opening edge of the suction tube (2) are directed.

Description

The The invention relates firstly to a pipe cleaning device, in particular for the a pipe rehabilitation preparatory cleaning of a pipe, comprising a suction pipe, arranged in the directed to one end of the suction pipe nozzles are.

Such -. B. in the DE 100 25 973 A1 described - device is in a water-bearing pipe, z. B. jumpers, used to generate by the blowing effect of the jets emerging from the nozzles, a flow in the pipe entraining deposits on the bottom of the tube. In order to achieve a high water flow, the suction pipe has a relatively large cross-section. The nozzles are arranged on the inner wall of the suction tube and aligned radially inwardly to the axis of the suction tube. Viewed in the direction of flow, they are located near the suction tube inlet.

To the Cleaning non-water pipes become compact cleaning devices used, on the outside Arranged nozzles are the radially outward are directed directly to the pipe wall to be cleaned.

such equipment can also be used to clean pipes that are for a pipe renovation are provided. In such a renovation, the pipes with a new lining provided by z. As a plastic the pipe walls is injected.

In order to the new layer is liable, the surface may still be wet but be clean. Furthermore may There are no pools of water or puddles, especially at the bottom of the pipe. There but straight to be rehabilitated pipes often in sections one Throat or arches have formed, which make up the water do not drain anymore can. Therefore, after cleaning the pipe with water nozzles often still a sponge-like one Structure pulled through the pipe, with which the residual liquid is absorbed. This process is relatively cumbersome there first clean the tube with water and then up must be dried to a residual moisture.

In the published patent application DE 199 15 413 A1 a nozzle body for a pipe cleaning device is described which has a plurality of recoil nozzles, each directed in a water channel. Each water channel has a rear suction opening and thus acts as a water jet pump.

The Invention is thus based on the problem of providing a pipe cleaning device, this means faster cleaning and drying especially of one for one Pipe renovation provided pipe allows.

to solution of the problem, the invention provides a pipe cleaning device according to the preamble of claim 1 before with the additional Features that the nozzles are formed on a centrally mounted in the suction pipe nozzle body, which has a has central hose connection, being between the nozzle body and the inner wall of the suction tube remains a passage and wherein the nozzles arranged around the hose connection obliquely outwards into an annular gap between a hose connected to the hose connection and the opening edge are directed to the suction pipe.

With such a device On the one hand the wall of the pipe can be cleaned, since the nozzles directly aligned with the wall. Furthermore, water can from the sucked to be cleaned pipe, as from the in the suction pipe lying nozzles exiting water jets act as blowing jets of an ejector. It can with a single device both a cleaning of the pipe walls as well as a drainage of the pipe to a certain residual moisture in the pipe walls be achieved.

Of the Nozzle body is preferably carried out in such a way that the nozzle body a having a conically shaped head, at its wide end a the Nozzles and the hose connection exhibiting sleeve-shaped nozzle carrier is attached, wherein the bottom of the head as a deflection for the through the nozzle body a connected hose entering water is formed.

Of the Nozzle body exists so that only two parts. He is easy to make and easy to assemble.

In order to the pipe cleaning device also dip into relatively short pipe subsidence and the local Can suck water, the suction pipe is relatively short, d. H. it is not much longer as the nozzle body.

The Suction tube is preferably made of a cylindrical portion and two rings forming the ends of the suction tube, the inner diameter thereof smaller than the inner diameter of the cylindrical part. Thereby results in a cross-sectional constriction both at the entrance and at the outlet of the suction tube, which enhances the suction effect.

The The invention further relates to a method for cleaning non-water pipes, There are puddles of water on their soles. According to claim 5, the method with a pipe cleaning device according to one of claims 1 to 4 performed, wherein the provided with a water hose pipe cleaning device in the to be cleaned, not water-bearing Pipe is introduced, wherein the pipe cleaning device on the Connected hose water is supplied, causing it through the recoil of the nozzles the pipe is driven and the water jets emerging from the nozzles Dirt from the pipe walls to solve, subsequently the pipe cleaning device is withdrawn to the starting point, wherein the remaining water in the pipe by the suction effect of the pipe cleaning device flows in the direction of a sampling point, where it is removed.

As already explained above, In this process, the pipe can be prepared for pipe rehabilitation become. In the first pass, the pipe walls are cleaned. In the second process, in which the pipe cleaning device withdrawn is sucked, the existing residual water in the pipe and to a Driven extraction point.

In order to The pipe is in a single operation, in which the pipe cleaning device first through pulled the water pressure through the pipe and then mechanically is withdrawn, placed in a condition suitable for rehabilitation.

in the The following is based on an embodiment the invention closer explained become. This shows first

1 a longitudinal section through a pipe cleaning device according to the invention and

2 a schematic representation of the method.

According to the sectional view according to 1 consists of the pipe cleaning device 1 from a suction pipe 2 and a nozzle body centrally disposed therein 3 ,

The suction tube 2 consists of three parts, namely a cylindrical section 4 and two rings 5 . 6 at the ends, with the rings 5 . 6 a cross-sectional change of the suction pipe 2 cause. Inside the cylindrical section 4 is located in the axis of the suction pipe 2 the nozzle body 3 who, in turn, out of a head 7 and a sleeve-shaped nozzle carrier screwed thereto 8th consists.

The inner wall of the nozzle carrier 8th is threaded, as a hose connection 9 serves. Dash-dotted is the location of a connected hose 10 shown.

To the hose connection 9 around there are several nozzle holes 11 in nozzles 12 end, which may also be formed by nozzle inserts not shown here. The radiation of the nozzles is obliquely radially outward according to the arrows 13 ,

The nozzle body 3 is over several jetties 15 with the suction pipe 2 connected, in such a way that between the nozzle body 3 and the suction tube 2 an annular passage 16 arises.

On the ground 17 Of the head 7 there are deflection surfaces 18 that through the water connection 9 entering water into the nozzle holes 11 redirect.

The nozzle body 3 is located relatively close to the end of the suction tube 2 from which the water jets emerge. Overall, the suction tube is relatively short, so that a central arrangement of the nozzle body 3 in the intake manifold 2 results.

In 2 the operation of the device is explained in more detail. This shows the pipe to be cleaned 20 which, as shown, has a slight slope, so that it is usually not water-bearing; rather, the water always flows off to one side.

The pipes 20 often consist of individual segments, some of which may be lowered, so that throats 21 arise in which water 22 stands.

To clean the pipe is the pipe cleaning device 1 on a slope down shaft 23 in the pipe 20 introduced, it is initially on a hose 10 is connected.

By the propulsion, which is caused by the water recoil, the pipe cleaning device 1 driven forward through the pipe, the water jets impact the pipe walls and there dissolve dirt, so clean the wall (situation A). Once the pipe to be cleaned has been completely passed through, the pipe cleaning device 1 on the hose 10 or retracted if necessary by means of a pull rope. This also causes it in the area of the throat 21 (Situation B). Here is already in the water before the cleaning process in a pool 22 collected, now by the ejector effect of the pipe cleaning device 1 is removed and also like the flow due to the pipe slope water at the shaft 23 collects and can be sucked out there by means of a pump, not shown here. Best results are achieved when the diameter of the pipe cleaning device 1 only slightly smaller than the diameter of the pipe to be cleaned 20 ,

1

Drain cleaner

2

suction tube

3

nozzle body

4

cylindrical section

5

ring

6

ring

7

head

8th

nozzle carrier

9

hose connection

10

tube

11

nozzle bore

12

jet

13

arrow

15

web

16

annular passage

17

ground

18

deflection

20

pipe

21

throat

22

water

23

shaft

Claims (5)

Pipe cleaning apparatus, in particular for pipe rehabilitation preparatory cleaning of a pipe ( 20 ), comprising a suction tube ( 2 ), in which to one end of the suction tube ( 2 ) directed nozzles ( 12 ) are arranged, characterized in that the nozzles ( 12 ) at a central point in the intake manifold ( 2 ) attached nozzle body ( 3 ) are formed, which via a central hose connection ( 9 ), wherein between the nozzle body ( 3 ) and the inner wall of the suction tube a passage ( 16 ) and the around the hose connection ( 9 ) arranged around nozzles ( 12 ) obliquely outwards into an annular gap between one on the hose connection ( 9 ) connected hose ( 10 ) and the opening edge of the suction tube ( 2 ) are directed. Nozzle body according to claim 1, characterized in that the nozzle body ( 3 ) a conically shaped head ( 7 ), at the wide end of which the nozzles ( 12 ) and the hose connection ( 9 ) having sleeve-shaped nozzle carrier ( 8th ), the bottom ( 17 ) Of the head ( 7 ) as a deflection surface ( 18 ) for the in the nozzle body ( 3 ) through a connected hose ( 10 ) entering water is formed. Nozzle body according to claims 1 or 2, characterized in that the suction tube ( 2 ) is not much longer than the nozzle body ( 3 ). Nozzle body according to at least one of the preceding claims, characterized in that the suction pipe ( 2 ) from a cylindrical section ( 4 ) and two the ends of the suction tube ( 2 ) forming rings ( 5 . 6 ) whose inner diameter is smaller than the inner diameter of the cylindrical portion ( 4 ). Method for cleaning non-water-bearing pipes, on their sole in places water pools ( 22 ) are present, with a pipe cleaning device ( 1 ) according to one of claims 1 to 4, characterized in that the with a water hose ( 10 ) provided pipe cleaning device ( 1 ) into the non-water-bearing pipe to be cleaned ( 20 ) is introduced that the pipe cleaning device ( 1 ) via the connected hose ( 10 ) Water is supplied, whereby it by the recoil of the nozzles ( 12 ) through the pipe ( 20 ) and that from the nozzles ( 12 ) water jets remove dirt from the pipe walls, then the pipe cleaning device ( 1 ) is withdrawn to the starting point, whereby in the tube ( 20 ) remaining water through the suction of the pipe cleaning device ( 1 ) flows in the direction of a sampling point, where it is removed.