RU2756609C1 - Apparatus for cleaning circular-section pipes - Google Patents

Abstract

FIELD: cleaning.

SUBSTANCE: apparatus for cleaning circular-section pipes relates to apparatuses for mechanical cleaning of the internal surfaces of circular-section pipes, primarily for removing solid residue from chimneys of furnaces and fireplaces. The apparatus for cleaning circular -section pipes comprises a central body with fastening elements for attaching the control means of the apparatus, at least two elastic tape elements are fixed on the central body, wherein each tape element is fixed so as to form a spiral loop, wherein the end surfaces of the tape elements are cutting edges of the apparatus.

EFFECT: invention increases the efficiency of removal of solid deposition due to the use of the cutting properties of the edge of the elastic tape elements while providing a possibility of applying the reciprocating working movements of the apparatus as well as the axial rotation thereof.

3 cl, 7 dwg

Description

SUBSTANCE: invention relates to devices for mechanical cleaning of internal surfaces of pipes of circular cross-section, mainly for removing solid residues from chimneys of stoves and fireplaces.

The use of stoves and fireplaces leads to the accumulation of combustion products such as ash, soot, tar and creosote on the internal surfaces of fireplace and stove chimneys, which should be removed periodically.

The most common designs for removing such solid residues are brush head devices such as those in CA 1200954, US 4353143 or CN 106705086. Many bonded flexible wire brush elements are quite suitable for removing loose constituent deposits such as ash and soot. but not effective on hardened or caked materials. Increasing the stiffness of the wire brush elements does not solve the problem as it results in blocking of the cleaning head in the pipe constrictions.

A known method for cleaning a chimney according to patent US4528040A, using the reception of transverse impact impact of sharp metal rods on the surface to be cleaned, which, however, can lead to the destruction of the pipe.

Known designs (patents US 4873739, US 4823425, US 5426812), containing plate or tape elastic elements of the cleaning heads, fixed in the hub at one end and which scrape the inner surface of the pipe with the other end. The disadvantage of such solutions is the low cleaning ability with hard deposits due to the weak clamping force.

Known tool (US 5257435) for cleaning a chimney with loop-shaped working elements in the form of a curved cable, which, however, has low efficiency due to a short and smoothed working surface.

The closest to the solution proposed in the application is a device for cleaning pipes and chimneys according to US Pat. that each belt element forms an elastic loop, on the outer surface of which one or more scraper elements are installed. The use of the elastic properties of the tape elements, which create an additional clamping effect in the transverse direction, should be considered as a significant improvement in comparison with other known solutions, however, the efficiency of the scraping action of the scraper elements in conditions of aged solid deposits remains insufficient. Another disadvantage is the complexity of the structure with elements that, when assembling the device, in addition to the operations of multiple bending and cutting of grooves, requires welding, which usually leads to the loss of elastic properties of the tape elements.

The aim of the invention is to provide a relatively easy-to-assemble device that makes it possible to effectively clean the inner surface of circular pipes in the presence of deposits of increased hardness.

For this purpose, the device for cleaning pipes of circular cross-section contains a central body with fastening elements for connecting device control means, at least two elastic tape elements are fixed on the central body so that each tape element forms a spiral loop, while the end surfaces of the tape elements are cutting edges devices.

Due to the presence of these features, the technical result is achieved, which consists in increasing the efficiency of removing solid deposits by using the cutting properties of the edge of the tape elements while ensuring the possibility of using both reciprocating working movements of the device and its axial rotation.

In a particular case, the strip element is a metal strip that forms a flat spring with elastic properties.

In another particular case, the attachment elements for attaching the device controls are the first attachment element and the second attachment element located at opposite ends of the central body.

An exemplary embodiment of the invention is illustrated in the drawings.

FIG. 1 is a general view of a device for cleaning circular pipes with an attached eye nut.

FIG. 2 is an image of a section of a pipe of a central cylindrical body with cuts.

FIG. 3 is a diagram of the packing of elastic band elements.

FIG. 4 is a diagram of the device installation.

FIG. 5 illustrates the position of the helical loops in the pipe to be cleaned for devices with two, three and four belt elements.

FIG. 6 is a diagram of the interaction of the spiral loop with the inner surface of the pipe during the reciprocating movement of the device.

FIG. 7 is a diagram of the interaction of the spiral loop with the inner surface of the pipe during the rotational movement of the device.

The cleaning device contains a central cylindrical body 1, on which four elastic band elements 2 are fixed, which respectively form four spiral loops 3. In this case, the end surfaces of the band elements 2 are the cutting edges of the device. To connect the device control means, the central cylindrical body 1 is provided with a first fastening element 4 and a second fastening element 5 in the form of an axial threaded rod 6 at opposite ends of the device.

In this embodiment of the invention, the central cylindrical body 1 is made of a pipe section 7, inside which there is a mounting plug 8 with a threaded rod 6. At the ends of the pipe section 7, cuts 9 are made, into which elastic tape elements 2 are inserted during installation of the device, which are fixed after laying on the central cylindrical body 2 with a washer 10 and a nut 11 (Fig. 4).

In other embodiments, the device may comprise, for example, two or three helical loops as shown in FIG. 5.

The use of the device involves the connection of controls (drive), the choice of which depends on the location of the pipe to be cleaned relative to the user - from above, from below or horizontally, as well as its properties - with straight or bending sections. Such tools may include a rope, a weight, a plumbing cable, an extension (stackable) rod, or a power tool such as a hand-held power drill.

For example, in the case of using a rope, it can be attached to the first attachment element 4 or the second attachment element 5 by means of a mounting ring of the eye nut 12.

Also, the use of the device assumes that the transverse size of the device slightly exceeds the inner diameter of the pipe being cleaned, therefore, when interacting with the walls of the pipe being cleaned, due to the elastic properties of the tape elements 2 in the transverse direction, an additional pressing effect is created, while the cutting edges of the spiral loops 3 perform the function of a knife and cut hard pipe deposits when moving the device. In places 13 of contact, a vertical strip 14 of cleaning is formed during the reciprocating movement of the device (Fig. 6) and a horizontal strip 15 of cleaning - during the rotational (Fig. 7) movement of the device.

Claims (3)

1. A device for cleaning pipes of circular cross-section, containing a central body with fastening elements for connecting device controls, at least two elastic tape elements are fixed on the central body, characterized in that each tape element is fixed so that it forms a spiral loop, while the end surfaces of the strip elements are the cutting edges of the device. 2. The device according to claim 1, characterized in that the tape element is a metal tape. 3. The device according to claim. 1, characterized in that the fastening elements for connecting the device controls are the first fastening element and the second fastening element located at opposite ends of the central body.

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