Rotary strainers - Company Metal-Gum SM Sp. z o.o.

Product

We are delighted to present you our innovative and unparalleled product – the advanced new-generation rotary strainer.

The figure below depicts our product – the rotary strainer for the purposes of industrial water filtering, having application in water supply systems and power plants.

The rotary strainer offered by us is equipped with at least one belt of stainless-steel net connected with conveyor belts with blades, strengthening transversal girders (the purpose of which is to strengthen the stainless-steel net and the whole structure), drivers (the purpose of which is to remove the filtered dross), as well as guides of conveyor belts and tightening elements. The girders are connected with belts and drivers – the girders (5) have connected elements (5a) and (5c), and their joints, in case of a sudden strain or stroke, are subject to damage. Only the central elements (5c) are connected with drivers (4). The guides (9) are L-shaped with surfaces (9a) clinging to the conveyor belt (2) and with surfaces (9b) localized close to the “free” side of the belt (2).

   In case of traditional rotary strainers, especially in case of large constructions, it often happens that, e.g. in case the stainless-steel net is clogged or in case of a sudden strain or stroke, the joints of the girders with belts are detached – which results in a complete damage of the conveyor belts that are very expensive and difficult to be replaced. Moreover, especially in case of large constructions of rotary strainers, under tough working conditions, it often happens that the belts come off their axle and their edges abrade themselves in contact with the cover’s construction which leads to their complete damage. In the construction of our innovative rotary strainer, the L-shaped element functions in the role of the conveyor belt’s fender in order to prevent its damage by preventing its contact with the construction’s cover, in case the belt starts to come off its axle. As a result, if the conveyor belt starts to come off its axle, its edges do not abrade themselves in contact with the cover as this contact is prevented from occurrence by the L-shaped element. What is more, when the conveyor belt starts to come off its axle, it slips on the driver-fender and it gradually directs itself back to its axle.
In case of traditional rotary strainers, sealings and guides are themselves separate and numerous elements. As a result, the construction of the conveyor belt is very complex and thus all procedures regarding maintenance and repairs are very complex and difficult to carry out.

   In case of our innovative new-generation rotary strainer, only central transversal elements are connected separately with drivers, whilst the extreme elements are connected with conveyor belts. The guides are L-shaped with surfaces clinging to the conveyor belt and thus being a tight-fitting race for the conveyor belt, and surfaces localized close to the “free” side of the belt. Moreover, extreme elements of the girder jointed to belts and central elements jointed to drivers are both connected with “weakened” joints, while central elements mounted to drivers are pipe-like structured, whereas extreme elements mounted to belts are cylinder-shaped. The joint element is extruded along with the girder’s shorter element as one part, mainly from synthetic materials. In other versions of our innovative rotary strainer, extreme elements of the girders are mounted to conveyor belts in the axle of cogs of the conveyor belts.
The drivers are made of high-quality durable rubber with metal elements, additionally their bedplates are mounted to the construction of the strainer’s cover, placed under the surface being a slippery race for the conveyor belt and its sealing element at the same time. In our construction, the bedplate is extruded together with other elements of the driver. As mentioned above, the L-shaped element functions in the role of the conveyor belt’s fender in order to prevent its damage by preventing its contact with the construction’s cover, in case the belt starts to come off its axle. As a result, if the conveyor belt starts to come off its axle, its edges do not abrade themselves in contact with the cover as this contact is prevented from occurrence by the L-shaped element. What is more, when the conveyor belt slips on the driver-fender, it gradually directs itself back to its axle.
   As a result of the application of the girder formed by the extreme and central elements, mounted separately to belts and driver, with “weakened” joints of these elements, in case of a sudden strain or stroke, the only element that is damaged is the “weakened” joint, not the conveyor belt as in case of traditional rotary strainers. This characteristic results in elimination of the risk of damaging the conveyor belt, which is very expensive and difficult to be replaced. In the construction of our rotary strainer, the belt of stainless-steel net “without end” is mounted to rubber belt and strengthened with transversal girders. This filtering system is mounted on cog-wheels, which are mounted on a shaft along with the drive system.

The below-presented figures depict the construction of our innovative rotary strainer:

In the specification shown below, figure 1 presents the strainer in general view, figure 2 presents the strainer’s schema, while figure 3 depicts the rotary strainer’s horizontal section. The rotary strainer (1) is equipped with two rubber-made conveyor belts (2) with one-side blades (2a) and cogs (2b), belt of stainless-steel net (3) “without end” with edges mounted separately to blades (2a). The drivers (4), the purpose of which is to remove the filtered dross, are situated inside the strainer (1), while strengthening transversal girders (5), the purpose of which is to strengthen the stainless-steel net (3), are situated outside the strainer (1). The girder (5) is composed of extreme elements (5a), cylinder-shaped joint (5b) and pipe-like structured joints (5c). The element (5a) is mounted separately to conveyor belts (2) in the axle of their cogs (2b), whereas the “weakened” joint element (5b) is mounted into the pipe-like structured element (5c) and is immobilized. Elements (5a) and (5b) are extruded in one cycle and made of synthetic materials. The drivers (4) are also mounted separately do central pipe-like structured element (5c) of the girder (5) and stainless-steel net (3). Between the stainless-steel net (3) and the pipe-like structured element (5c) of the girder (5) there are distance gaskets (6). The above-mentioned elements are depicted as not completely screwed. The conveyor belts (2) are stretched onto the drums (7), lower and upper ones. In the upper drum there is a pourer (8), the purpose of which is to pour the filtered dross outside of the strainer (1). The strainer is also equipped with L-shaped rubber-made guides (9) of the conveyor belt (2) with “working” surfaces (9a) and (9b) and the bedplates (9c). The guide (9) is mounted on a supporter (10) which is itself mounted to the strainer’s (1) cover’s construction (11). The bedplate (9c) is screwed to its supporter (10). Particular elements of the strainer (1) are connected separately, with joints (12) with the use of gaskets (13).

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