GB2165809A

GB2165809A - Equipment for scraping conveying belts by means of blades joined to a holder

Info

Publication number: GB2165809A
Application number: GB08511019A
Authority: GB
Inventors: Emmanuel Davidts
Original assignee: Technic Gum SA
Current assignee: Technic Gum SA
Priority date: 1984-10-19
Filing date: 1985-05-01
Publication date: 1986-04-23
Also published as: GB8511019D0; ZA853399B

Abstract

There is described an equipment for scraping conveying belts by means of blades (1) joined to a holder (3) through a resilient material block (4), in which each holder (3) is arranged at the end of an arm (5), which is in turn arranged on a cross-beam (6) extending in operating condition, cross-wise to the running direction of the conveying belt. <IMAGE>

Description

SPECIFICATION Equipment for scraping conveying belts by means of blades joined to a holder This invention relates to an equipment for scraping conveying belts by means of blades each joined to a holder through a resilient material block.

The object of the invention is to provide an equipment for scraping conveying belts which differs from known equipments by a plurality of noticeable features.

1) a steady and unvarying cleaning over the whole width of the conveyor side to be scraped; 2) a constant pressure of the scraping blade on the surface to be cleaned, which enables dealing with the materials encrusted in the belt or adhering strongly thereto; 3) an arrangement of the arms bearing the scraping blades which avoids fouling the equipment with the materials scraped from the side being cleaned.

To obtain such objects, the scraping equipment according to the invention is characterized in that each holder is arranged on the end of an arm which is in turn arranged on a cross-beam which extends in operating condition, cross-wise relative to the running direction of the conveying belt.

A marked feature of the invention lies in said scraping elements lying side by side, in such a way that each blade has an end zone which overlaps in operation, the end zone of an adjacent blade.

Other details and features of the invention will stand out from the following description, given by way of non limitative example and with reference to the accompanying drawings, in which; Figure 1 is a perspective view of the scraping equipment according to the invention.

Figures 2 and 3 are section views, on a different scale, of two possible arrangements for a blade on a holder, through an arm and a resilient material block.

Figure 4 is a perspective view of a variation for the arrangement of the cross-beam in an equipment according to the invention.

In the scraping equipment according to the invention, the blades 1 secured in a way known per se to a plate 2, are joined to a holder 3 through a resilient material block 4.

The holder 3 as well as the resilient material block 4, may have in cross-section, any suitable geometrical shape, that is notably a triangular or trapezoidal shape.

Each holder 3 is mounted on an arm 5, which is fastened in turn with that end thereof opposite to holder 3, on a cross-beam 6 which extends in operation, cross-wise to the direction along which moves the side to be cleaned of the conveying belt.

It is clear that the holder 3 does not necessarily have to show a triangular shape in cross-section and that other arrangements with the interposition of a resilient material block 4 with any shape are possible.

In the variation as shown in Figure 3, there will be noticed that the blade 1 secured to a plate 7, is mounted inside a resilient material cylinder 4' in which is embedded the end of an arm 5 having the same structure as the arm 5 shown in Figure 2.

Such an arrangement provided either with the design of Figure 2, or with the design of Figure 3, has many advantages because the blade 1 which receives directly the vibrations and the amplitudes thereof as it engages the belt to be cleaned, remains in constant contact with the belt, due on the one hand to the interposition of the resilient block 4 or the resilient cylinder 4', and more particularly, to the pressure exerted by the arms 5 which are preferably comprised of metal rods having a resiliency allowing slight movements in vertical planes, when one considers the side 21 to be cleaned as moving in a horizontal plane.

The principle of the damper in direct contact with the belt to be cleaned does also provide an ideal pressure relative to a low crushing of the elastomer comprising the conveying belt, which allows to scrape belts which are difficult to clean.

In the one as in the other case, the use of a cross-beam formed by a flat iron bar 6 solves the problem of the fouling of the support for the arms 5, which is minimized due to the absence of any heavy and intricate apparatus where the crossbeam does only take up a very small voiume.

The adjusting in the height of the cross-beam 6 may occur according to a first conventional arrangement which comprises a bracket 8 provided with a suitably-sized cut-out 8' which is intended to receive the flat iron bar 6 with a square cross-section.

Said bracket 8 is in turn adjustable in the height relative to a bracket 9 which is one of the fixed elements of that frame bearing the conveying belt.

The moving closer and away of bracket 8 relative to the fixed bracket 9 is obtained by acting on a screw-threaded rod 10, while the locking of both brackets relative to one another, occurs by tightening the screw-belt 11 which goes through a slot 12 provided vertically in bracket 8 (Figure 1).

In a particularly suitable embodiment, the crossbeam 6 is received in the space 13 between both arms 14 of a part 15 which is fixed relative to the equipment frame. An adjusting screw 16 passing through an angle-iron 17, which is in turn adjustable in the height, allows a less long stroke for the adjusting screw 16.

When the blades 1 are suitably applied against the side to be cleaned, the position of cross-beam 6 is locked relative to part 15 by tightening a second adjusting screw 18 which goes through the arms 14 of part 15 at right angle to the axis of said part 15, thus causing backing of cross-beam 6 between the arms of said part. The adjusting in the height of said angle-iron 17 relative to part 15 is obtained by using screw-bolts 19 cooperating with openings 20 provided by pairs on different levels (Figure 4).

It will be further noted that according to a chief characteristic of the invention, the blades and the holders thereof are located side by side, in such a way that the ends of two adjacent blades overlap one another to work a common zone of the conveyor side to be cleaned. There is thus avoided that between two adjacent blades a straight zone which would be subjected to a less intensive or even non-existent scraping action. In the equipement according to the invention, to the contrary, the whole width of the conveyor side to be cleaned is worked faultlessly.

This characteristic added to the resiliency ofthe arms 5 and holders 3 insures an absolutely unvarying and intensive scraping of the total surface area of the conveyor belt thus being treated. The scraps and dusts originating from the scraping operation do not find any large surface to accumulate on, which comprises another marked advantage of the equipment according to the invention.

It must be understood that the invention is in no way limited to the above embodiments and that many changes may be brought thereto without departing from the scope of the invention as defined by the appended claims.

Claims

1. Equip, Pt for scraping conveying belts by means of blades joined to a holder through a resilient material block, characterized in that each holder (3) is arranged at the end of an arm (5), which is in turn arranged on a cross-beam (6) extending in operating condition, cross-wise to the running direction of the conveying belt.

2. Scraping equipment as defined in claim 1, characterized in that said arms (5) are comprised of metal rods which extend resiliently in a plane at right angle to the general plane the side of said conveying belt moves in.

3. Scraping equipment as defined in either one of claims 1 and 2, characterized in that said resilient material block has a triangular cross-section.

4. Scraping equipment as defined in either one of claims 1 and 2, characterized in that said resilient material block has a trapezoidal cross-section.

5. Scraping equipment as defined in either one of claims 1 and 2, characterized in that said resilient material block has a circular or oval cross-section.

6. Scraping equipment as defined in claim 5, characterized in that said arm (5) is embedded in the resilient material mass.

7. Scraping equipment as defined in any one of claims 1 to 6, characterized in that said blades are so arranged side by side that each one thereof has an end zone which overlaps in operation, the end zone from an adjacent blade.

8. Scraping equipment as defined in any one of claims 1 to 7, characterized in that said cross-beam (6) is received inside a vertical space (13) between the arms (14) of a part (15), and the blades (1) are applied against the conveying belt side by using an adjusting screw 116) which bears on an angle-iron (17) which is in turn adjustable in the height, while a second adjusting screw (18) lying at right angle to the axis of said part (15), allows locking the cross-beam (6) between the arms (14) of said part (15).

9. Equipment for scraping conveying belts, sub stantially as hereinbefore described with reference to, and as illustrated in, Figure 1, or Figure 4; or either Figure 1 or Figure 4 when constructed as illustrated in Figure 2 or Figure 3, of the accompanying drawings.