VIBRATING SCREENING SYSTEM, COMPRISING AT LEAST TWO SCREENING MACHINES ARRANGED IN A ROW

Abstract

A vibrating screening system, made up of at least two screening machines configured in a row and that can be set into vibration, each screening machine having a resiliently supported screening material feed end and a resiliently supported screening material discharge end. All supports of the last screening machine, in the screening material conveying direction, are supported directly on the supporting surface. The support provided respectively in the region of the screening material feed end of any earlier screening machine in the conveying direction is likewise supported directly on the supporting surface. In each case, the support provided in the region of the screening material discharge end of any such earlier screening machine in the conveying direction is supported in the region of the screening material feed end of the screening machine that is subsequent in the screening material conveying direction, on this subsequent machine.

Claims

1-9. (canceled)

10. A vibrating screening system, made up of at least two screening machines that are configured in a row of screening machines on a supporting surface and that can be set into vibration, each screening machine having a screening material feed end and a screening material discharge end, and each screening machine having a resilient support in a region of its screening material feed end and a resilient support in a region of its screening material discharge end, wherein all supports of a last screening machine, seen in a screening material conveying direction, in the row of screening machines, are supported directly on the supporting surface, and wherein the support provided respectively in the region of the screening material feed end of each earlier screening machine in the conveying direction, is likewise supported directly on the supporting surface, and wherein, in each case, the support provided in the region of the screening material discharge end of each said earlier screening machine in the conveying direction is not supported directly on the supporting surface, but rather is supported in the region of the screening material feed end of the screening machine that is subsequent in the screening material conveying direction, on this subsequent machine.

11. The vibrating screening system according to claim 10, wherein, in each case, the screening material discharge end of screening machines situated before, viewed in the screening material conveying direction, the last screening machine is situated above the screening material feed end of the following screening machine in the screening material conveying direction.

12. The vibrating screening system according to claim 10, wherein a respective screening material transfer chute is situated, in each case, between the screening material discharge end of screening machines situated before, seen in the screening material conveying direction, the last screening machine and the following screening machine in the screening material conveying direction, or at the screening material discharge end of each screening machine.

13. The vibrating screening system according to claim 10, wherein all supports are respectively formed by a spring system, and that, in each case, the spring system of the support provided in the region of the screening material discharge end of any additional screening machine and the spring system of the support provided in the region of the screening material feed end of the following screening machine in the screening material conveying direction are configured so as to be aligned one over the other.

14. The vibrating screening system according to claim 10, wherein all screening machines of the vibrating screening system are realized identically to one another.

15. The vibrating screening system according to claim 10, wherein the screening machines of the vibrating screening system are realized differently from one another.

16. The vibrating screening system according to claim 15, wherein the screening machines of the vibrating screening system are realized having screens that have screen mesh sizes that differ from screening machine to screening machine.

17. The vibrating screening system according to claim 15, wherein the screening machines of the vibrating screening system are realized having blind zones.

18. The vibrating screening system according to claim 15, wherein the screening machines of the vibrating screening system are realized having distributing cones.

19. The vibrating screening system according to claim 15, wherein the screening machines of the vibrating screening system are realized having material flow dividers.

20. The vibrating screening system according to claim 10, wherein at least one separate vibratory drive is allocated to each screening machine.

21. The vibrating screening system according to claim 20, wherein each vibratory drive is adjustable and operable individually with respect to at least one of a rotational speed, a vibration angle, a vibration amplitude, a phase angle, or a vibration pattern.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In the following, exemplary embodiments of the present invention are explained on the basis of a drawing.

[0020] FIG. 1 shows a first vibrating screening system having three screening machines, in a schematic side view, and

[0021] FIG. 2 shows a second vibrating screening system having three screening machines, also in a schematic side view.

[0022] In the following description of the Figures, identical parts in the various Figures of the drawing are always provided with the same reference characters, so that all reference characters do not have to be explained again for each Figure.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] FIG. 1 shows a first vibrating screening system 1 in a schematic side view. Here, vibrating screening system 1 is made up of three screening machines 2, 3, 4 configured in a row and capable of being set into vibration by at least one respectively allocated vibratory drive 20, 30, 40. Vibratory drives 20, 30, 40 are of a known design, and are realized, e.g., having rotating imbalance masses, as shown in the drawing. Preferably, each vibratory drive 20, 30, 40 can be individually adjusted and operated in its rotational speed and/or its vibration angle and/or its vibration amplitude and/or its phase angle and/or its vibration pattern, in order to make it possible to optimally adapt vibrating screening system 1 to different screening materials and tasks.

[0024] Each screening machine 2, 3, 4 has a screening material feed end 21, 31, 41, each situated at the right in FIG. 1, and a screening material discharge end 24, 34, 44, each situated at the left. Screening material can be conveyed in screening material conveying direction 10 (indicated by an arrow) by vibrating screening system 1. Screening machines 2, 3, 4 each have at least one flat screen (not visible here) running perpendicular to the surface plane of the drawing, having a specifiable screen mesh size, by which, during operation of the vibrating screening system, those particles of the screening material that can fall through the screen mesh are screened out from the screening material.

[0025] In addition, each screening machine 2, 3, 4 has a respective resilient support 22, 25; 32, 35; 42, 45 in the region of its screening material feed end 21, 31, 41 and in the region of its screening material discharge end 24, 34, 44. All supports 22, 25 of the last (seen in conveying direction 10) screening machine 2 in the row of screening machines 2, 3, 4 are supported on supporting surface 5. Support 32, 42, respectively situated in the region of screening material feed end 31, 41 of each further screening machine 3, 4, (earlier in the conveying direction) is also supported on supporting surface 5.

[0026] However, the respective supports 35, 45 provided in the region of screening material discharge end 34, 44 of each further screening machine 3, 4 are not supported on supporting surface 5; rather, in the region of screening material feed end 21, 31 of the following (in conveying direction 10) (subsequent) screening machine 2, 3, they are supported on this subsequent machine.

[0027] All supports 22, 25; 32, 35; 42, 45 are here formed, in each case, by a spring system 23, 26; 33, 36; 43, 46. Here, in each case, spring system 36, 46 of support 35, 45 provided in the region of screening material discharge end 34, 44 of each further screening machine 3, 4, and spring system 23, 33 of support 22, 32 provided in the region of screening material feed end 21, 31 of the following (in conveying direction 10) screening machine 2, 3, are configured so as to be aligned one over the other. Spring systems 23, 26; 33, 36; 43, 46 are made up, for example, of steel springs or elastomer springs or pneumatic springs.

[0028] In each case, screening material discharge end 34, 44 of screening machines 3, 4 situated before (in conveying direction 10) the last screening machine 2 is situated above screening material feed end 21, 31 of the following (in conveying direction 10) screening machine 2, 3. The step between the individual screening machines 2, 3, 4 can be adapted to the particular requirements of the situation by attaching the elements of spring systems 36, 46 at different heights. The use of spring systems 36, 46 adjustable in their length is also possible for this purpose.

[0029] The angle of inclination of screening machines 2, 3, 4 relative to the horizontal, and the angle between the individual screening machines 2, 3, 4, can be set and adjusted so as to meet the needs of the particular situation by changing the height of supports 22, 25; 32, 35; 42, 45 relative to supporting surface 5.

[0030] All screening machines 2, 3, 4 of vibrating screening system 1 can be realized identically to one another, enabling a simple modular construction having different numbers of screening machines depending on the needs of the situation.

[0031] Alternatively, screening machines 2, 3, 4 of vibrating screening system 1 can be realized differently from one another. For example, screening machines 2, 3, 4 of vibrating screening system 1 can be realized having screens that have screen mesh sizes differing from screening machine 2, 3, 4 to screening machine 2, 3, 4, and/or blind zones and/or distributing cones and/or material flow dividers can be provided on screening machines 2, 3, 4 that are hidden and therefore not visible in the drawing, or are not shown separately because they are known per se.

[0032] During operation of vibrating screening system 1, screening material is fed onto screening material feed end 41 of first screening machine 4, situated at right in FIG. 1, e.g., by a conveyor belt. During the conveying of the screening material in conveying direction 10, portions of the screening material screened through the screen of the screening machine fall downward and are caught and/or transported away by suitable devices (not shown separately here). At screening material discharge end 24 of the last screening machine 2 of the row, a screening material residue, made up of larger screening material portions that do not fit through the screen mesh, is then discharged.

[0033] FIG. 2 shows a second vibrating screening system 1 having three screening machines 2, 3, 4 configured in a row, also in a schematic side view.

[0034] Vibrating screening system 1 according to FIG. 2 differs from the above-described vibrating screening system 1 according to FIG. 1 in that at the screening material discharge end 24, 34, 44 of all screening machines 2, 3, 4, there is respectively situated a screening material transfer chute 27, 37, 47 that prevents loss of screening material to the surrounding environment, in particular, when lightweight screening material is being processed.

[0035] In its remaining parts, vibrating screening system 1 according to FIG. 2 corresponds to the above-described vibrating screening system 1 according to FIG. 1, to whose description reference is therefore made.

[0036] While at least one exemplary embodiment of the present invention(s) is disclosed herein, it should be understood that modifications, substitutions and alternatives may be apparent to one of ordinary skill in the art and can be made without departing from the scope of this disclosure. This disclosure is intended to cover any adaptations or variations of the exemplary embodiment(s). In addition, in this disclosure, the terms “comprise” or “comprising” do not exclude other elements or steps, the terms “a” or “one” do not exclude a plural number, and the term “or” means either or both. Furthermore, characteristics or steps which have been described may also be used in combination with other characteristics or steps and in any order unless the disclosure or context suggests otherwise. This disclosure hereby incorporates by reference the complete disclosure of any patent or application from which it claims benefit or priority.

LIST OF REFERENCE CHARACTERS

[0037] 1 vibrating screening system [0038] 10 screening material conveying direction [0039] 2 last screening machine [0040] 20 vibratory drive of 2 [0041] 21 screening material feed end of 2 [0042] 22 support on 21 [0043] 23 spring system on 22 [0044] 24 screening material discharge end of 2 [0045] 25 support on 24 [0046] 26 spring system on 25 [0047] 27 transfer chute on 24 [0048] 3 first further screening machine [0049] 30 vibratory drive of 3 [0050] 31 screening material feed end of 3 [0051] 32 support on 31 [0052] 33 spring system on 32 [0053] 34 screening material discharge end of 3 [0054] 35 support on 34 [0055] 36 spring system on 35 [0056] 37 transfer chute on 34 [0057] 4 second further screening machine [0058] 40 vibratory drive of 4 [0059] 41 screening material feed end of 4 [0060] 42 support on 41 [0061] 43 spring system on 42 [0062] 44 screening material discharge end of 4 [0063] 45 support on 44 [0064] 46 spring system on 45 [0065] 47 transfer chute on 44 [0066] 5 supporting surface