Device and method for the filtration of viscous material
A technology for filtering materials and viscous materials, which is applied in the field of filtering viscous materials, and can solve problems such as difficult operation and instability
Inactive Publication Date: 2008-07-02
赫尔穆特·贝彻 +2
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
The costs necessary for this are considerable, and the device is not easy to handle, since the increased volume of the space in front of the screen must be coordinated with the supply of material to be filtered
However, this supply is not always constant, for example if the screw conveying the material to be filtered is not uniformly fed, it is not constant
Method used
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Embodiment Construction
[0016] The device has a frame 1 , only partially shown, supporting a supply housing 2 . In the housing 2 there is an inflow channel 3 through which the material to be filtered is extruded towards a belt screen 4 made of woven metal mesh, which has a mesh fine enough so that the material to be filtered is The impurities separated from the filter material remain on the inflow side of the belt screen 4 . When filtering thermoplastic materials and especially recycled materials, these impurities are mostly in the form of powder dust or small stones, and even metal, such as paper clips, sewing needles, small screws, nails and various types of solid particles . Since the material to be filtered passes through the inflow channel 3 under more or less high pressure, the screen 4 is supported by a perforated plate at the section 57 where the actual work is carried out, the size of the hole 57 being large enough to allow the extrusion to pass through. The filtrate passing through the si...
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An apparatus for filtering viscous material, in particular thermoplastic synthetic plastic material, comprises a screw ( 24 ), which presses the material to be cleaned from an upstream conduit ( 3 ) of a supply housing ( 2 ) towards a band-shaped screen ( 4 ). The screen ( 4 ) is abutted on its downstream side by a perforated plate ( 6 ) against the pressure of the supplied material. The band-shaped screen ( 4 ) can be displaced for replacement of a soiled band section by a fresh band section. For facilitating this displacement a device is provided, which comprises a closure means ( 30 ) that is disposed on the upstream side of the screen ( 4 ), by which closure means the upstream conduit ( 3 ) for the material to be filtered can be closed at least substantially. On the upstream side of this closure means ( 30 ) a storage space ( 36 ) for material to be cleaned is connected to the upstream conduit ( 3 ). Within this storage space ( 36 ) a piston ( 38 ) is sealingly guided, which is reciprocable by a drive means and closes in its projected position the storage space ( 36 ) against the upstream conduit ( 3 ).
Description
technical field [0001] The invention relates to a device for filtering viscous materials, especially thermoplastics, having a device, in particular a screw, which presses the material to be cleaned from an inflow channel of a feed housing to a belt screen net, the screen is supported on the outflow side by an orifice plate against the pressure of the inflowing material and can be moved transversely to the flow direction of the material to be cleaned to replace a contaminated belt section by a new belt section , wherein, in order to facilitate this movement, a device is provided which has a reservoir connected to the inflow channel for the material to be cleaned, in which a piston is sealingly guided, which can pass through a The drive device reciprocates and in its extended position closes the storage tank against the inflow channel. In addition, the invention also relates to a method for filtering viscous materials. Background technique [0002] In a known device of this ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B29C47/68B01D29/09B01D29/01B01D29/90B01D35/02B29CB29C48/475
CPCB29C47/6018B29C47/38B29C47/0023B29C47/54B29C47/685B29C47/362B29C48/09B29C48/362B29C48/395B29C48/475B29C48/53B29C48/692B29B9/06B29B9/065B29B7/428B29B7/58
Inventor 赫尔穆特·贝彻赫尔穆思·舒尔茨乔·温德林
Owner 赫尔穆特·贝彻