WO2018178032A1

WO2018178032A1 - Feed device and cleaning device

Info

Publication number: WO2018178032A1
Application number: PCT/EP2018/057682
Authority: WO
Inventors: Frank Lehmann
Original assignee: Lehmann Gmbh & Co. Kg
Priority date: 2017-03-30
Filing date: 2018-03-26
Publication date: 2018-10-04
Also published as: DE102017106871A1; EP3600706A1

Abstract

The invention relates to a feed device (1) for a cleaning spring (6) of a pipe-cleaning device which can rotate about its longitudinal axis (5). The feed device (1) has a main body (2) and a guide-through opening (4) arranged in the main body (2), through which the cleaning spring (6) can be guided, lengthways in a longitudinal direction (7) of the guide-through opening (4). The feed device (1) has at least two feed elements (8) arranged on the main body (2) such that they are secured in the longitudinal direction (7), which can be pressed onto the cleaning spring (6) in the guide-through opening (4) in such a way that a feeding through of the cleaning spring (6) is generated when said cleaning spring (6) rotates. At least one of the feed elements (8) is configured as an interlocking element (9) and has an interlocking part (11) oriented in the direction of the guide-through opening (4). The interlocking part (11) engages into the cleaning spring (6) interlockingly between windings (12) of the cleaning spring (6), if the feed element (8) is pressed onto the cleaning spring (6).

Description

Feed device and cleaning device

The invention relates to a feed device for a cleaning spiral of a rotatable about its longitudinal axis

Pipe cleaning device, wherein the feed device comprises a base body and arranged in the base body

Has implementing opening, through which the

Cleaning spiral in a longitudinal direction of

Feedthrough opening is longitudinally guided, wherein the feed device has at least two fixed to the main body in the longitudinal direction arranged feed elements, which are pressed in the lead-through opening to the cleaning spiral such that when rotating cleaning spiral feed of the cleaning spiral is generated. In addition, the invention relates to a

Pipe cleaning device with such a feed device.

Pipe cleaning devices are used for cleaning

Pipelines, such as used by drainpipes. To clean a pipeline, the

Cleaning spiral with the help of a suitable

Drive device of the pipe cleaning device set in rotation and introduced into the pipeline. By the rotation of the cleaning spiral and an optionally introduced at an end of the pipe in the

Pipe cleaning spiral on the pipe cleaning spiral

arranged cleaning head are dissolved in the pipeline adhering dirt. For example, from the prior art

Pipe cleaning devices are known in which a

Jaw system is set in rotation with a plurality of arranged around the cleaning spiral clamping jaws, wherein the jaws can be pressed against the cleaning spiral to the cleaning spiral also in

To rotate. In addition, drum tube cleaning devices are known from the prior art, in which the

Pipe cleaning spiral in a drum around a transverse to the longitudinal axis of the pipe cleaning spiral

Drum axis of rotation is wound around, the

Drum together with the pipe cleaning spiral in one

Rotary motion can be offset, allowing one out of the drum in the direction of the drum rotation axis

led out portion of the pipe cleaning spiral around the longitudinal axis of the pipe cleaning spiral rotates. The drum of the pipe cleaning machine can be set in rotation manually or by a motor drive.

In particular drum cleaning devices have

usually a feed device, by which a propulsion of the cleaning spiral during rotation of the cleaning spiral can be generated. To do this

usually rotatably mounted cylindrical

Feed elements used by an actuation of a suitable actuator with the rotating

Cleaning spiral in the Eslichen cylindrical

Lead-through opening can be brought into abutment, wherein cylinder rotation axes of the feed elements are selected so that by pressing the feed elements to the cleaning spiral, a propulsion of the cleaning spiral is produced. Such a feed device is

For example, in the document EP 1 031 666 Bl

described. As an object of the invention, it is considered to improve the feed devices known from the prior art.

This object is achieved in that at least one of the feed elements as

Forming element is configured and has a aligned in the direction of the feed-through region form-fitting part, wherein the form-fitting part engages positively between turns of the cleaning spiral in the cleaning spiral when the feed elements to the

Cleaning spiral are pressed. Due to the fact that at least one of the advancing elements is not brought into abutment with the cleaning spiral, but positively engages between the turns of the cleaning spiral, which is a type of helical flexible shaft, a reliable feed of the cleaning spiral is achieved if the Feed elements are pressed against the cleaning spiral. In order to further improve the feed through the positive-locking element, the invention provides that the

Positive locking element is mounted forcibly guided such that a rotational movement about an axis parallel to the longitudinal axis is excluded. The interlocking element is thus advantageously not a cylindrical feed element rotatably mounted parallel to the longitudinal axis and having a cylindrical feed element attached to the windings Cleaning spiral adapted groove, which rotates with the shaft when the feed elements are pressed against the cleaning spiral. According to the invention, it can also be provided that the interlocking element is mounted forcibly guided in such a way that a rotational movement about an axis intersecting the longitudinal axis at an acute angle is excluded. Advantageously, a rotational movement about one

Longitudinal axis excluded at an angle between 0.1 degrees and 60 degrees intersecting axis. Advantageously, according to the invention it can also be provided that the

Positive locking element exclusively in the direction of

Passage opening and in the opposite direction is displaced. The positive-locking element is vorrhafterweise stored so that a movement of the positive-locking element is avoided when the feed elements to the cleaning spiral

are pressed. In this way, a reliable engagement of the form-fitting part in the turns can be achieved.

Advantageously, according to the invention, it is provided that the form-fitting part has a contact surface of the form-locking element facing the feed-through area

trained bridge is. A length of the web should be predetermined so that a reliable engagement between the turns of the pipe cleaning spiral at

Pipe cleaning coils of different diameters is achieved. According to the invention it is also possible that a plurality of mutually parallel webs are arranged on the contact surface, so that a plurality of webs engage in adjacent turns of the pipe cleaning spiral to a to achieve the most reliable feed.

Advantageously, a distance between the webs to each other to a wire diameter of the for the production of

Cleaning spiral used wire adapted so that the webs easily into adjacent turns of the

Pipe cleaning spiral can be introduced.

According to the invention it is advantageously provided that at least one feed element as a cylinder element

is designed and a cylindrical

Cylinder jacket surface, wherein the cylinder element is mounted rotatably mounted about a cylinder axis on the base body and wherein the cylinder jacket surface

frictionally rests against the cleaning coil when the feed elements are pressed against the cleaning spiral. By using rotatably mounted cylindrical feed elements, frictional forces acting on the cleaning spiral by the advancing elements can be considerable

be reduced . Since the feed of the cleaning spiral is achieved in the feed device according to the invention by the positive engagement of the positive-locking element, it is not necessary that frictional forces are exerted on the cleaning spiral on the rotating cylindrical feed elements.

According to the invention is therefore advantageously provided that the cylinder axis is aligned in the longitudinal direction. In this way it can be avoided that pre-thrust forces act on the cleaning spiral via the cylinder elements. The feed is characterized by the

Positive locking element causes, which in different

Acting directions and from the cylinder elements and the Positive locking element applied feed forces can be avoided. Advantageously, the invention provides that the feed exclusively by the

Positive locking element acting on the cleaning spiral VorSchubkräfte is effected. Advantageously, the other feed elements and unspecific act

Cylinder elements exclusively as an abutment to form fit the form fit element with the winding of the

Tube cleaning spiral to engage. For this purpose, the form-locking element is vorteilahfterweise by appropriately arranged feed elements against the

Cleaning wave pressed.

In a particularly advantageous embodiment of the feed device according to the invention it is provided that the feed device comprises two cylindrical elements and a

Has positive connection element.

Advantageously, the invention provides that the feed elements lie in a common and perpendicular to the longitudinal direction aligned pressing plane and are spaced from each other when the

Feed elements are pressed against the cleaning spiral In the feed device according to the invention, the feed of the rotating cleaning spiral by the interlocking between the turns form-fitting element and not as known from the prior art by a suitable arrangement of the cylinder rotation axes

cylindrical feed elements allows. Therefore, the feed elements in a common plane around the

Cleaning spiral can be arranged around, so that from the feed elements on the pipe cleaning spiral acting pressure forces perpendicular to the longitudinal direction or. perpendicular to the longitudinal axis of the pipe cleaning spiral in the area of the feed elements act, creating a

unwanted deformation of the pipe cleaning spiral is avoided by the feed elements. Advantageously, the feed elements are arranged on different sides of a median plane, wherein the median plane in the longitudinal direction along a

Feedthrough centerline extends. According to the invention advantageously two feed elements are spaced from each other on one side of the median plane and a

Positive locking element arranged on the opposite side of the median plane. In this way, the

Cleaning spiral through the feed elements and

Advantageously be pressed by cylinder elements effectively to the cleaning spiral.

To the interlocking element with the turns of the

To bring pipe cleaning spiral into engagement and to be able to solve again, it is provided according to the invention that the

Positive locking element in the direction of the passage opening transversely to the longitudinal direction displaceable on the base body is arranged. Advantageously, one cuts

corresponding displacement axis, in which a displacement of the form-fitting element can take place transversely to the longitudinal axis, the longitudinal axis at an angle between 80 degrees and 100 degrees and particularly advantageously at an angle of 90 degrees. The displacement axis cuts the

Passage opening therefore also advantageously at an angle of 90 degrees. For the displacement of the positive-locking element, the invention provides that on the main body with a

Positive locking element operatively connected

Actuator is arranged, wherein by a

Actuation of the actuating element, the positive-locking element in the direction of the passage opening is displaced.

Advantageously, the actuating element is displaceable against a spring force of a return spring, so that the positive-locking element is released from the pipe cleaning spiral when the actuating element is not actuated and is pressed against the pipe cleaning spiral when the

Actuator is actuated. The actuating element is advantageously one on one

Handle the feed device arranged pressure lever, which are pressed against the spring force of the return spring in the direction of the hand lever and in this way the hinged to the pressure lever positive locking element can be moved in the direction of the passage opening. The

Positive-locking element advantageously has a in the direction of the actuating element extending guide part, which is forcibly guided in a forced operation of the fastening device to the positive-locking element upon actuation of the actuating element in the direction of

Implementation opening.

In order to use the feed device according to the invention for propulsion of different pipe cleaning coils with differently designed and oriented turns, the invention provides that the

Positive locking element to one in the direction of

Implementation opening arranged transversely to the longitudinal direction of rotation axis pivotally mounted on the body angeordn is. In this way, for example, the orientation of the web of the positive-locking element easily to a

Alignment of the meandering swirl used

Pipe cleaning spiral to be adjusted. According to the invention, the interlocking element is freely pivotably mounted about the axis of rotation, so that the interlocking element automatically aligns with a course of the winding when the

Positive locking element is pressed against the winding.

Advantageously, a pivoting angle of

Positive locking element to the the positive locking element

is pivotable, so limited that the

Feed device with the commonly used

Pipe cleaning spirals can be used and

at the same time tilting, for example, CIG S web of the positive-locking element is avoided. Advantageously, the pivot angle is between 1 ° and 30 °, preferably between 5 ° and 25 ° and particularly preferably between 10 ° and 15 °. Advantageously, the invention provides that the positive-locking element is displaceable exclusively longitudinally in the direction of the passage opening and is pivotable exclusively about the axis of rotation. By such

Design of the positive guidance of the positive-locking element, an effective engagement in the turns of the shaft can be achieved.

According to the invention, it is advantageously provided that the positive-locking element can be displaced exclusively along the axis of rotation. Advantageously, the axis of rotation intersects the longitudinal axis and an angle between 80 degrees and 100 degrees, and particularly advantageously at an angle from 90 degrees. Due to the fact that the displacement axis and the axis of rotation coincide, the positive guidance of the

Positive locking element are designed particularly simple. The invention also relates to a pipe cleaning device having a feed device as described above, wherein the base body of the feed device and a pipe cleaning device main body are designed in two parts. Advantageously, it is in the

Pipe cleaning device to a rotatably mounted drum in which the cleaning coil is arranged.

Further advantageous embodiments of the feed device according to the invention and of the invention

Cleaning device will be explained in more detail with reference to embodiments shown in the drawing.

1 shows a schematically represented view of a

Feed device with a rotatable handle for shifting a positive locking element and

Figure 2 is a schematic view of a

Feed device with a handle on a

arranged actuator.

FIG. 1 schematically shows a feed device 1 with a main body 2. The main body 2 has two housing halves, wherein in the illustration, only one housing half 3 is shown. In a

Passage opening 4 of the main body 3 is one to their Longitudinal axis 5 rotatable cleaning spiral 6 in one

Longitudinal direction 7 of the passage opening 4 along

passed through. The feed device 1 has three fixed to the main body 2 in the longitudinal direction 7 arranged feed elements 8, which in the passage opening 4 to the

Cleaning spiral 6 are pressed. One of the

Feed elements 8 is a form-locking element 9 and the two other feed elements 8 are as

Cylinder elements 10 designed. The form-fitting element 9 has a direction of the passage opening 4th

aligned form-fitting part 11. The form-fitting part 11 engages positively between turns 12 of the

Cleaning spiral 6 in the cleaning coil 6 a. In this case, during a rotation of the cleaning spiral 6, a feed of the cleaning spiral 6 is generated as a function of a direction of rotation in the longitudinal direction 7 or counter to the longitudinal direction 7. In the illustrations of Figures 1 and 2 in each case a turn 12 is exemplified by a reference character.

The cylinder elements 10 have a cylindrical

Cylinder surface 13 and are each one

Cylinder axis 14 rotatably mounted on the base body 2 arranged. The cylinder elements 10 are with their

Cylinder jacket surfaces 13 frictionally connected to the

Cleaning spiral 6 on. In this way, the

Cleaning spiral 6 is pressed over the cylinder elements 10 against the positive-locking element 9, so that the form-fitting part 11 engages positively in between the windings 12. The cylinder axes 14 are in the longitudinal direction 7

aligned. In this way, by the

Cylinder elements 10 no VorSchubkräfte on the

Cleaning spiral 6 exercised, but pressed the cleaning coil 6 against the VorSchubkraft generating positive locking element 9. In addition, a friction between the

Cylinder element 10 and the cleaning coil 6 are further reduced in this way. The feed elements 8 lie in a common and aligned perpendicular to the longitudinal direction 7

Andrückebene and are spaced from each other. In this way, the safest possible engagement of the positive-locking element 9 in the cleaning spiral 6th

allows.

The positive-locking element 9 is in the direction of

Through opening 4 transversely to the longitudinal direction 7 arranged displaceable on the base body 2. A rotational movement about an axis parallel to the longitudinal axis 5 is excluded. Positive locking element 9 For displacement of the

Positive locking element 9, the base body 2 via a screw connection 15 with the housing halves third

connected handle 16. An upper contact surface 17 of the handle 16 forms a stop for the

Positive locking element 9. By turning the handle 16 of the handle 16 in dependence on the direction of rotation in the direction of the base body 2 or in opposite

Direction screwed and relocated, so the

Positive locking element 9 are pressed against the cleaning coil 6 and can be solved by the cleaning coil 6. In the feed device 1 shown in FIG. 2, a handle 16 of a main body 2 is in operative connection with a positive-locking element 9

Actuator 18 is arranged. The actuator 18 is in engagement with a return spring 19, which is supported against the handle 16 and can against a

Spring force of the return spring 19 in the direction of

Return spring 19 are displaced. The positive-locking element 9 has a guide part 20 extending in the direction of the actuating element 18. The guide part 20 is forcibly guided in a groove 21 formed on the actuating element 18. In this way, the positive locking element 9 is released from a pipe cleaning spiral 6 when the actuator 18 is not actuated and is displaced by the return spring 19 in a Ausgangsläge. When the actuating element 19 is actuated, the guide part is displaced along the groove 21 and the positive-locking element 9 is displaced in this way in the direction of the cleaning spiral 6.

In the embodiment shown in Figure 2, the positive-locking element 6 is one in the direction of a

Through opening 4 transversely to a longitudinal direction 7 extending axis of rotation 22 pivotally mounted on the

Basic body 2 arranged. In this way, the

Alignment of a guide member 11 of the positive-locking element 9 can be easily adapted to an alignment of the eweiligen turns 12 of the pipe cleaning coil 6 used.

Claims

PATENT APPLICATIONS

1. feed device (1) for a about its longitudinal axis (5) rotatable cleaning spiral (6) of a

Pipe cleaning device, wherein the feed device (1) on a base body (2) and in the base body (2) arranged through opening (4) on, through which the cleaning coil (6) in a longitudinal direction (7) of the passage opening (4) can be passed longitudinally , wherein the feed device (1) at least two on the

Base body (2) fixed in the longitudinal direction (7)

arranged feed elements (8) which in the passage opening (4) are pressed against the cleaning spiral (6), that when rotating cleaning spiral (6) a feed of the cleaning spiral (6) is generated, characterized in that at least one of

Feed elements (8) as positive-locking element (9)

is designed and one in the direction of

The mold closing part (11) engages positively between turns (12) of the cleaning spiral (6) in the cleaning spiral (6) when the feed elements (8) are pressed against the cleaning spiral (6) ,

Second feed device (1) according to claim 1, characterized in that the positive-locking element (9) is mounted forcibly guided in such a way that a rotational movement about an axis parallel to the longitudinal axis (5) axis is excluded.

3. Feed device (1) according to claim 1 or claim 2, characterized in that a movement of the

Positive locking element is avoided when the

Feed elements are pressed against the cleaning spiral.

4. Feed device (1) according to one of the preceding claims, characterized in that the

Forming closing part (11) is a web formed on one of the through-opening (4) facing contact surface of the positive-locking element (9).

5. Feed device (1) according to one of the preceding claims, characterized in that at least one feed element (8) is designed as a cylinder element (10) and has a cylindrical cylinder jacket surface (13), wherein the cylinder element (10) around a

Cylinder axis (14) rotatably mounted on the base body (2) is arranged and wherein the cylinder jacket surface (13) frictionally against the cleaning coil (6), when the feed elements (8) are pressed against the cleaning coil (6).

6. feed device (1) according to claim 5, characterized in that the cylinder axis (14) in the

Longitudinal direction (7) is aligned.

7. feed device (1) according to claim 5 or claim 6, characterized in that the feed device (1) has two cylindrical elements (10) and a positive locking element (9).

8. feed device (1) according to one of the preceding claims, characterized in that the

Feed elements (8) in a common and perpendicular to the longitudinal direction (7) aligned pressing plane (15) and are spaced from each other when the feed elements (8) to the cleaning coil (6)

are pressed.

9. feed device (1) according to one of the preceding claims, characterized in that the

Positive locking element (9) in the direction of the passage opening (4) transversely to the longitudinal direction (7) displaceable on the

Basic body (2) is arranged.

10. Feed device (1) according to claim 9, characterized in that on the base body (2) with the positive-locking element (9) in operative connection

Actuator (18) is arranged, wherein by an actuation of the actuating element (18) the

Positive locking element (9) in the direction of the passage opening (4) is displaceable.

11. Feed device (1) according to one of the preceding claims, characterized in that the

Positive locking element (9) around one in the direction of

Through opening (4) transversely to the longitudinal direction (7) extending axis of rotation (22) pivotally mounted on the base body (2) is arranged.

12. feed device (1) according to claim 11, characterized in that the positive-locking element (9)

only longitudinally in the direction of the passage opening (4) is displaceable and only about the axis of rotation (22) is pivotable.

13. Feed device (1) according to claim 11 or claim 12, characterized in that the positive-locking element (9) exclusively along the axis of rotation (22) is displaceable.

14. Pipe cleaning device with a feed device (1) according to one of the preceding claims, wherein the

Basic body (2) of the feed device (1) and a

Pipe cleaning device body are designed in two parts.