Screen system
First Claim
1. A screen system suitable for use in a basket in a vibratory screen apparatus said basket having a clamping system said screen system comprising:
- a screen element disposed on a support frame, said support frame being provided with spaced apart first and second elongate frame elements including a support face and further elongate frame elements extending between said first and second frame elements for supporting a mesh panel of said screen element, wherein said mesh panel includes first and second elongate support members extending along opposite end portions of said mesh panel, said first and second support members including a clamping force receiving face and a frame element engaging face, said first and second support members being formed and arranged for secure interengagement with said first and second frame elements with at least one of said first and second support members and said support face being formed and arranged so that when said at least one first and second support member is clamped to said support face of the respective one of said first and second frame elements by said clamping system, said at least one first and second support member is subjected to a force component substantially in the principal plane of said mesh panel, so that said mesh panel is securely held under tension against said further frame elements and said respective one of said first and second frame elements is clamped together with said at least one first and second support member in the basket;
wherein at least one of said first and second elongate support members, for interengagement with said first and second frame elements, has a cam portion formed and arranged for interaction with the respective frame element, so that when a clamping force (C) is applied by said clamping system to a clamp force receiving face of said at least one of said first and second support members, in use of the screen system, to clamp said support members onto the respective one of said first and second frame elements, a said at least one support member is rotated relative to said frame element, so as to tension the screen element so that the mesh panel is securely held under tension against said further frame elements;
wherein said clamping system comprises a collapsible tube and wherein the further frame elements include convexly arcuate support surfaces forming a crown deck.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides a screen system (8) suitable for use in a vibratory screen apparatus (1), and comprising: a screen element (11) and a support frame (12) therefor, as well as novel screen elements (11) and mesh panels (19) therefor, and the use thereof. The screen element (11) consists essentially of a mesh panel (19) provided with first and second elongate support members (22, 23) extending along opposite end portions of the mesh panel (19). The support frame (12) has spaced apart first and second elongate frame elements (13, 14) for engagement with the screen element support members (22, 23) and further elongate frame elements (17, 18) extending there between for supporting the mesh panel (19). The screen element support members (22, 23) and said first and second frame elements (13, 14) are formed and arranged for secure interengagement in use of the screen system, with at least one of said screen element support members and the respective one of said first and second frame elements being formed and arranged so that when clamped together, the mesh panel (19) is securely held under tension against said further frame elements (17, 18).
-
Citations
22 Claims
-
1. A screen system suitable for use in a basket in a vibratory screen apparatus said basket having a clamping system said screen system comprising:
-
a screen element disposed on a support frame, said support frame being provided with spaced apart first and second elongate frame elements including a support face and further elongate frame elements extending between said first and second frame elements for supporting a mesh panel of said screen element, wherein said mesh panel includes first and second elongate support members extending along opposite end portions of said mesh panel, said first and second support members including a clamping force receiving face and a frame element engaging face, said first and second support members being formed and arranged for secure interengagement with said first and second frame elements with at least one of said first and second support members and said support face being formed and arranged so that when said at least one first and second support member is clamped to said support face of the respective one of said first and second frame elements by said clamping system, said at least one first and second support member is subjected to a force component substantially in the principal plane of said mesh panel, so that said mesh panel is securely held under tension against said further frame elements and said respective one of said first and second frame elements is clamped together with said at least one first and second support member in the basket; wherein at least one of said first and second elongate support members, for interengagement with said first and second frame elements, has a cam portion formed and arranged for interaction with the respective frame element, so that when a clamping force (C) is applied by said clamping system to a clamp force receiving face of said at least one of said first and second support members, in use of the screen system, to clamp said support members onto the respective one of said first and second frame elements, a said at least one support member is rotated relative to said frame element, so as to tension the screen element so that the mesh panel is securely held under tension against said further frame elements; wherein said clamping system comprises a collapsible tube and wherein the further frame elements include convexly arcuate support surfaces forming a crown deck. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A method of mounting a screen system in a vibratory screen apparatus comprising the steps of:
-
providing a basket having a support frame secured thereto, said support frame being provided with spaced apart first and second elongate frame elements including a support face and further elongate frame elements extending between said first and second frame elements for supporting a mesh panel of a screen element; providing said screen element including first and second elongate support members extending along opposite end portions of said mesh panel, said first and second support members including a clamping force receiving face and a frame element engaging face, and wherein at least one of said first and second elongate support members has a cam portion formed and arranged for interaction with a respective frame element; providing at least one clamping system for securing said screen element to the support frame; inserting said screen element into said basket wherein said support frame is secured; and activating said at least one clamping system so as to clamp said screen element securely to said support frame, whereby said at least one clamping system will concomitantly tension said mesh panel by rotation of the cam portion of a support member relative to a respective frame element; wherein said clamping system comprises a collapsible tube and wherein the further frame elements include convexly arcuate support surfaces forming a crown deck.
-
-
21. A method of mounting a screen system in a vibratory screen apparatus comprising the steps of:
-
providing a basket having screen system support runners formed and arranged for sliding insertion and removal of the screen system, each one of said support runners provided with at least one clamping system; providing a screen element including a mesh panel having first and second elongate support members extending along opposite end portions of said mesh panel, said first and second support members including a clamping force receiving face and a frame element engaging face, and wherein at least one of said first and second elongate support members has a cam portion formed and arranged for interaction with a respective frame element; providing a support frame with spaced apart first and second elongate frame elements including a support face and further elongate frame elements extending between said first and second frame elements for supporting a said mesh panel of a screen element; inserting said screen element into said basket wherein said support frame is supported in said support runners; and activating said at least one clamping system so as to clamp said screen element securely together with said support frame to said support runners, whereby said at least one clamping system will concomitantly tension said mesh panel by rotation of the cam portion of a support member relative to a respective frame element and clamp together said support frame to said support runner; wherein said clamping system comprises a collapsible tube and wherein the further frame elements include convexly arcuate support surfaces forming a crown deck.
-
-
22. A method of screening a fluidised particulate material suspended in a liquid medium, said method comprising the steps of:
-
providing a vibratory screening apparatus having a basket wherein a screen element is disposed on a support frame, said support frame being provided with spaced apart first and second elongate frame elements including a support face and further elongate frame elements extending between said first and second frame elements for supporting-a mesh panel of said screen element, wherein said mesh panel includes first and second elongate support members extending along opposite end portions of said mesh panel, said first and second support members including a clamping force receiving face and a frame element engaging face and wherein at least one of said first and second elongate support members, has a cam portion formed and arranged for interaction with the respective frame element, said first and second support members being formed and arranged for secure interengagement with said first and second frame elements, with at least one of said first and second support members and said support face being formed and arranged so that when a clamping force (C) is applied by a clamping system to a clamp force receiving face of said at least one of said first and second support members, in use of the screen element, to clamp said support members onto the respective one of said first and second frame elements, a said at least one support member is rotated relative to said frame element, so as to tension the screen element so that the mesh panel is securely held under tension against said further frame elements; activating a vibratory unit of said vibratory screen apparatus; and feeding said fluidised particulate material onto an upper surface of said screen element; wherein said clamping system comprises a collapsible tube and wherein the further frame elements include convexly arcuate support surfaces forming a crown deck.
-
Specification