DE2132163A1 - ELASTIC SEALING ELEMENT FOR MOVABLE SCREEN TRAYS - Google Patents

Description

Re: "Elastic sealing element for movable sieve trays" The invention relates to so-called "flip-flop sieve trays" according to DBP 1 06 372. The sieve zones Such sieve trays lead concave and convex movements on the edges of the sieve boxes or portafilter from special screening machines and are therefore difficult to seal.

It has been proposed to make this seal using bellows-like To achieve wall pieces, the vertical wall of which is held in a wave-like manner and the then opens into a horizontally lying ribbon-like cross-section, which gives the possibility for connection with the sieve bottom elements.

This solution has only proven itself where it is proportionate coarse screening goes and missing grains that still pass through in the horizontal clamping position the corrugations of the bellows get into the passage, do not disturb. There too Introduction of a cover band over the wall pieces the accumulation of faulty grain, in particular in the case of fine and ultra-fine sieving can not prevent satisfactorily and also the Stress on the bellows often prevents a sufficient lifespan the demand for a satisfactory solution, especially for an absolute one Tightness of this elastic side border.

The present invention offers such a solution.

It is based on the consideration of the movement of this side seal the harmonic stretching movements of the constantly deforming sieve bottom transverse elements to compensate and to create possibilities that the problematic sealing in solve the tension position and, moreover, still create the possibilities, simple To use replacement elements that have a beneficial effect on the question of costs.

"Elastic sealing element for movable sieve trays" lifting the fulfillment of the demands made, the present invention still offers advantageous mounting options, which are more favorable for # numerous applications, as they do the previous cumbersome Replace connection connections.

Fig. 1) shows an embodiment of the inventive @ side seal, which is designed practically like a blind with slats arranged one above the other is.

The outer slats (1) are practical with the vertical bars (2) connected to a frame within which the intermediate lamellas (3), (3 ') etc., which are connected to one another with one or more vertical connecting webs (4) can be, are classified into a grid-like structure.

The gaps (5) between the individual slats allow a good Possibility of movement of the entire structure, which is now closer in its movement the concave or convex and horizontal tensioning movements of the actual screen transverse elements can adapt organically, because all cross-sectional movements can run parallel.

The horizontally lying slots (5), which are located in the sieve frequency move with large amplitudes, prevent the passage of sieve grain in impermissible Size. They practically offer a cooling option for the constantly deformed Cross-sections.

Fig. 2), which represents the side view of Fig. 1), shows an embodiment with narrower slats (3), so that compared to the frame cross-sections (1) and (2) results in a cavity (7) which, according to the invention, offers the possibilities Additionally exchangeable standard elements and fittings, e.g. shown in the% Insert form (8) or (9) so that the slots (5) are also covered can. These fittings can be used for elastic foams that have a very low resistance to deformation exist.

"Elastic sealing element for movable sieve trays" It is next possible, sleeve-like fittings (3) us textiles, leather, artificial leather, plastics etc. to be clamped, glued, riveted or the like in the Ra # m ## (7).

The frame cross-sections (1) and (2) are designed in their width so that that they can be guided between guide cross-sections.

Fi £. 3) also represents a side view of Fig. 1).

Here are the guide pieces (10) and (10 '), which are in the screening machine are indicated.

In Fig. 4) is shown on the basis of two sieve transverse elements, such as the The side seal according to the invention is lined up.

As can be seen from Fig. 4), the frame cross-sections (1) and (1 ') over the vertical cross-sections further outwards, so that here the overlapping cantilever arms (6) result.

These cantilever pieces (6) butt with the same pieces of the next seal together in such a way that two side seals result in a frame in which according to Fig. 4) a pressing filler piece, which is on the cast mounting bracket (11) lays, can be used.

Fig.) Shows another possibility for fastening the sieve cross elements, in contrast to the attachment according to Fig. 1), with the #### sB at urt (1 ') over the Bores (13) can be made by rivets or screws, clamping elements or the like.

According to Fig. 5) is another lower chord (lot) with connecting cams (14) arranged; into the slots left open here between the cams (14) the sieve cross elements, which are given away with the corresponding receptacles, are simply pushed in. In this way and the rescher between them there are also compensatory movements possible with slight differences in stretching.

Elastiche s sealing element for movable sieve bottom 'Fig. 6) shows another embodiment of the side seal according to the invention. Here are on the fastening strap (11), which are made of hard plastic or metal, canal, slots (15) provided in the individually shaped lamellae (16) with corresponding Spacer cams are provided, pushed in, glued in or vulcanized in whereby they unite to form a closed seal.

The previously described embodiments of the invention Due to their perpendicular connection cross-sections, seals are suitable for the installation in so-called "Umbrex screening machines," their supports and connection supports for this side seal move perpendicularly parallel to each other.

With tensioning shaft screening machines according to DBP 1 75 3) 3, the tilting beam movements run, there are different approximation points due to the inclined position of the connecting supports the side seal.

As a result, according to the guide form in FIG. 1), uncontrolled Flexing movements arise that quickly destroy the materials used from rubber or plastics.

Fig. 7) shows an embodiment that is designed trapezoidal and in which the 4uersciinittlengths of the individual lamellas are adjusted so that they in the relaxed position, especially with the concave sag, an absolute one Exhibit parallelism.

Fig. 8) shows the position of the slats and the fastening straps (11) in the relaxed zone of a screening machine according to DBP 1 275 339.

Fig. 9) shows the tensioned zone with inclined outward Fastening straps. Eggs have the individual lamellae from a predetermined height a permissible elongation which, as experience has shown, does not lead to any inadmissible stresses as with uncontrolled flexing movements.

"Elastic sealing element for movable sieve trays" Fig. 10) shows an embodiment according to the invention in the case of the seal, in which the individual Lamellae in the cavity formed with horizontally lying, connecting compensating folds (16) are connected.

The stresses are also very low here and result in a absolute poetry.

There are numerous modifications in accordance with the present invention principle possible without abandoning the principle.

For example, the lamellas should also be kept at greater distances and with multiple vertical webs (4) to subdivide so that participation in the The screening process is made possible by the fact that the openings formed are the size of the openings in the Cieb cross elements.

Furthermore, the lamellar overcuts also run inclined and be conical.

Button-like Impression or indentation cross-sections be attached, which are in the bores of the gable cross-section can be locked into place.

Claims (1)

Regards: "Elastische DichtJelêmente for movable sieve trays" - new claim 1) -Elastic side seal for movable sieve trays, especially those that work elastically with alternating sagging and tensioning movements in zones connected one behind the other, characterized in that the individual transverse elements of the sieve covering have a perpendicular They are associated with a blind-like wall piece that can be connected, the slats of which lie horizontally in the tensioning phase and predominantly concave on top of each other in the sagging position, the last slat below and the first slat above with the vertical connection cross-sections forming a frame. "Elastic sealing element for movable sieve bottoms" request - 2.) Elastic side seal for movable sieve trays according to claim 1, characterized in that the width of the lamellae of the frame is kept narrower than the frame and thus forms a cavity. ).) Elastic side seal for movable sieve trays according to claims 1 and 2, characterized in that the lamella sides with the front of the Run parallel to the frame and form the side to be screened here. 4.) Elastic side seal for movable floor panels according to the claims 1 - 3, characterized in that the slat sides rait the back of the frame run flat and the cavity formed forms the screeningside. 5.) Elastic side seal for movable sieve trays after the fittings 1 - 4, characterized in that the slats are connected to each other by perpendicular webs are connected. "2-elastic sealing element for movable sieve trays" -claims-6.) Elastic side seal for movable sieve trays according to claims 1-5, thereby characterized in that the slats are closed on one side by a closed elastic thin wall connected to each other. 7.) Elastic side seal for movable sieve trays according to claim 6, characterized in that the closed thin, elastic wall in horizontal Palten is running. 8.) Elastic side seal for movable sieve trays according to the claims 1 - 7, characterized in that the vertical frame webs with fastening devices are provided to connect to the sieve machine, which are primarily cast in, vulcanized or glued in. 9.) Elastic side seal for movable sieve trays according to the claims 1 - 8, characterized in that the slats and frame cross-sections are inclined stored or designed Honisch. 10.) Elastic side seal for movable sieve trays according to the claims 1 - 9, characterized in that the slat cross-sections are arcuate in the rest position are deformed .. 11.) Elastic side seal for movable sieve trays according to the claims 1 - 10, characterized in that the lamellas represent individual fittings, which grip into the slots of the side connection pieces and clamped, glued, vulcanized or otherwise attached. 12.) Elastic side seal for movable Seibböden according to claim 11, characterized in that the individual lamellae with spacer cams for the spacer to the next slat § "Elastic sealing element for moving Sieve trays "claims 13.) Elastic side seal for movable sieve trays according to claims 1 - 12, characterized in that in the rest position the connection pieces sloping inwards from bottom to top, so that the topmost lamella the shortest and the lowest lamella the longest length. 14.) Elastic side seal for movable sieve trays according to the claims 1 - 13, characterized in that the lowest lamella is assigned a further belt is, which has spacers, which at the same time corresponding to the receiving attachment Serve counter-trainings in the sieve cross element. 15.) Elastic side seal for movable sieve trays according to the claims 1 - 14, characterized in that the lower frame belt of the training according to Fig. 1) Assigned button-like cross-sections with thread lengths instead of the bores which allow placement or pulling into bores of the wire cross element.