초록 ▼

The invention relates to a filter module (1) comprising filters layers (4a, b) made of a filter medium, especially comprising filter layers made of filter strata. Said filter layers alternate with layers made of draining spacer elements 910, 10a, b, 20), the first and last layer of the filter module

The invention relates to a filter module (1) comprising filters layers (4a, b) made of a filter medium, especially comprising filter layers made of filter strata. Said filter layers alternate with layers made of draining spacer elements 910, 10a, b, 20), the first and last layer of the filter module (1) consisting respectively of a draining spacer element (10a, b, 20). The draining spacer elements respectively and mutually comprise flow elements (12a, b) and sealing elements (11a, b) for the filtrate chamber and the non-filtrate chamber (40, 41). Means are provided for the mutual connection thereof. The aim of the filter module (1) is to combine the advantages of known filter modules with improved sealing at the edges of the filter layers, and to make the filter module backwashable. The filter module (1) comprises draining spacer elements (10, 10a, b, 20) which are embodied in such a way that they enable the filter layers to be pressed in a sealing manner. At least some of the draining spacer elements (10, 10a, b, 20) comprise connecting means in the region of at least one filtrate chamber or non-filtrate chamber (40, 41), which co-operate with the connecting means of at least one other spacer element. The connecting means include lugs, stirrup straps (16a, b, 23a, b), and T and arrow-shaped catch elements. In this way, a stable and both backwashable filter module (1) is created.

대표청구항 ▼

The invention claimed is: 1. A filter module comprising: a plurality of filter layers, each filter layer including a filtrate surface, an opposite non-filtrate surface, a first end region and a first periphery, and a second end region and a second periphery and further including a filter medium; a

The invention claimed is: 1. A filter module comprising: a plurality of filter layers, each filter layer including a filtrate surface, an opposite non-filtrate surface, a first end region and a first periphery, and a second end region and a second periphery and further including a filter medium; a plurality of draining spacer elements including filtrate spacer elements and non-filtrate spacer elements, each filtrate spacer element including a filtrate sealing element at a first edge region of the filtrate spacer element, a filtrate flow element at a second edge region of the filtrate spacer element, and a filtrate drainage element intermediate the filtrate sealing element and the filtrate flow element and each non-filtrate spacer element including a non-filtrate flow element at a first edge region of the non-filtrate spacer element, a non-filtrate sealing element at a second edge region of the non-filtrate spacer element, and a non-filtrate drainage element intermediate the non-filtrate flow element and the non-filtrate sealing element; wherein the plurality of filter layers and draining spacer elements are stacked on one another in an axial direction of the filter module, the stack comprising a non-filtrate spacer element, a filter layer, a filtrate spacer element, a filter layer, a non-filtrate spacer element, a filter layer, and a filtrate spacer element and the stack defining a filtrate chamber adjacent the filtrate surface of each filter layer and a non-filtrate chamber adjacent the non-filtrate surface of each filter layer; wherein each filter layer is positioned between a non-filtrate spacer element and a filtrate spacer element, each non-filtrate drainage element is positioned between and fluidly communicates with the non-filtrate surfaces of adjacent filter layers, and each filtrate drainage element is positioned between and fluidly communicates with the filtrate surfaces of adjacent filter layers; wherein the non-filtrate sealing element and the non-filtrate flow element of each non-filtrate spacer element are thicker in the axial direction than the intermediate non-filtrate drainage element, and the non-filtrate drainage element extends along a space between the non-filtrate surfaces of adjacent filter layers; wherein the first end region of each filter layer is compressed and sealed along the first periphery between a non-filtrate flow element of a non-filtrate spacer element and a filtrate sealing element of a filtrate spacer element, the non-filtrate flow element fluidly communicating between the non-filtrate drainage element of the non-filtrate spacer element and one of the exterior and interior chambers while the filtrate sealing element seals the filtrate drainage element of the filtrate spacer element from said one of the exterior and interior chambers, and the second end region of each filter layer is compressed and sealed along the second periphery between a non-filtrate sealing element of the non-filtrate spacer element and a filtrate flow element of the filtrate spacer element, the filtrate flow element fluidly communicating between the filtrate drainage element of the filtrate spacer element and the other of the exterior and the interior chambers while the non-filtrate sealing element seals the non-filtrate drainage element of the non-filtrate spacer element from said other of the exterior and interior chambers; and wherein each draining spacer element comprises connecting means for connecting together the first edge regions of the adjacent draining spacer elements. 2. A filter module according to claim 1 wherein the connecting means of adjacent spacer elements cooperate. 3. A filter module according to claim 1 wherein the connecting means cross over to at least the adjacent spacer element and cooperate with the connecting means of at least one of the following spacer elements. 4. A filter module according to claim 1 wherein the filter module has an inner circumference and an outer circumference and wherein the non-filtrate spacer element has the sealing element on the inner circumference and the filtrate spacer element has the sealing element on the outer circumference. 5. A filter module according to claim 1 wherein the non-filtrate spacer element has a wedge-shaped connecting element between the drainage element and the sealing element. 6. A filter module according to claim 1, wherein the non-filtrate spacer element includes a wedge-shaped connector between the non-filtrate drainage element and one of the non-filtrate sealing element and the non-filtrate flow element, the wedge-shaped connector having at least an upper wedge surface and at least a lower wedge surface. 7. A filter module according to claim 1 wherein the drainage element of a draining spacer element is formed in one piece with the sealing element. 8. A filter module according to claim 1 wherein the connecting means are in one piece with a draining spacer element. 9. A filter module according to claim 1 wherein the connecting means are rated in such a way that they can withstand a tractive stress that corresponds to a clamping pressure between 1 N/mm2 to 30 N/mm2 in the pressing and sealing action on the filter layers. 10. A filter module according to claim 1 wherein a flow element or a sealing have element of a draining spacer element has the connecting means in the vicinity of the first edge region. 11. A filter module according to claim 1 wherein the connecting means include clips that interact with catch lugs, wherein the clips are arranged in a circumferential direction of the draining spacer elements and are gripped in the catch lugs. 12. A filter module according to claim 11, wherein the clips are L-shaped or U-shaped. 13. A filter module according to claim 11 wherein the clips alternate by pointing up and down along the axial direction. 14. A filter module according to claim 11 wherein the clips are arranged directly next to one another in a circumferential direction of the draining spacer element. 15. A filter module according to claim 11 wherein the clips are arranged with an interval to one another in a circumferential direction of the draining spacer element, whereby the interval is a maximum of 500 mm. 16. A filter module according to claim 11 wherein the clips have gliding bevels facing the catch lugs. 17. A filter module according to claim 11 wherein the catch lugs have sliding surfaces facing the clips. 18. A filter module according to claim 1 wherein the connecting means include a slot running around on a draining spacer element and catch hooks on another draining spacer element that reach into the slot. 19. A filter module according to claim 1 wherein contact surfaces of the connecting means are inclined to provide a secure hold under a tensile load. 20. A filter module according to claim 1 wherein the connecting means are provided exclusively on an outer circumference defined by the first edge region of the draining spacer elements. 21. A filter module according to claim 1 wherein the filter module has an outer circumference and the first end region of each filter layer and first edge region of each draining spacer element is along the outer circumference. 22. A filter module according to claim 1 wherein the non-filtrate spacer element has a wedge-shaped connecting element between the drainage element and the flow element. 23. A filter module according to claim 1 wherein the drainage element of a draining spacer element is formed in one piece with the flow element. 24. A filter module according to claim 1 wherein a non-filtrate spacer element includes a wedge-shaped connector element, the drainage element being formed in one piece with the wedge-shaped connector element. 25. A filter module according to claim 1 wherein the connecting means are in one piece with the filtrate spacer element. 26. A filter module according to claim 1 wherein the space between the non-filtrate surfaces of adjacent filter layers includes a gap between the non-filtrate surface of a filter layer and the non-filtrate drainage element. 27. A filter module according to claim 1 wherein each draining spacer element, including the flow element, the drainage element, and the sealing element, comprises a one-piece plastic part. 28. A filter module according to claim 1 wherein the flow element and the sealing element of the non-filtrate spacer element press against the non-filtrate surface in the end regions of the filter layer and the sealing element and the flow element of the filtrate spacer element press against the filtrate surface in the end regions of the filter layer. 29. A filter module according to claim 1 wherein each non-filtrate spacer element, including the flow element, the drainage element, and the sealing element, comprises a one-piece plastic part, wherein each filtrate spacer element, including the sealing element, the drainage element, and the sealing element, comprises a one-piece plastic part, wherein the flow element and the sealing element of the non-filtrate spacer element press against the non-filtrate surfaces in the end regions of adjacent filter layers, and wherein the sealing element and the flow element of the filtrate spacer element press against the filtrate surfaces in the end regions of adjacent filter layers. 30. The filter module according to claim 1 wherein the filtrate flow element of a filtrate spacer element is thicker in the axial direction than the filtrate drainage element. 31. The filter module according to claim 1 wherein the non-filtrate sealing element and the non-filtrate flow element of a non-filtrate spacer element are thicker in the axial direction than the filtrate sealing element and the filtrate flow element of a filtrate spacer element.