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Dished filter disc for high-viscosity melt filtering

A filter disc, high-viscosity technology, used in filtration and separation, fixed filter element filters, chemical instruments and methods, etc., can solve problems such as large flow resistance, gel deterioration, retention, etc., to achieve high pressure resistance, uniform flow rate Effect

Active Publication Date: 2019-12-10
HANGZHOU COBETTER FILTRATION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The support layer in the middle of the traditional metal disc is supported by metal mesh: in the working condition of high-viscosity melt filtration, the melt passes through the filter layer and the filter support layer from both sides of the disc to the central support guide layer. And along the radial guide channel to the center outlet of the disc, the center hole of the disc runs through a section of sealed hollow shaft, which is used as a channel for the melt to flow out of the filter after filtration, and the flow of the melt in the guide channel lacks radial flow. Directionality will produce greater flow resistance, the flow rate of the filtered fluid will slow down, resulting in stagnation, and there will also be deterioration of the gel, and the metal mesh is easily deformed in a high-pressure environment

Method used

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  • Dished filter disc for high-viscosity melt filtering
  • Dished filter disc for high-viscosity melt filtering
  • Dished filter disc for high-viscosity melt filtering

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Such as Figure 1 to Figure 5 As shown, the present invention provides a dish-shaped filter disc for high-viscosity melt filtration, which sequentially includes a filter layer 200, a filter support layer 300 and a support diversion layer 100 from the outside to the inside, and the support diversion layer 100 plays a role of support and The role of diversion. The support guide layer 100 includes a plurality of connecting rings 150 arranged concentrically, an annular region 110 is formed between adjacent connecting rings 150, and a plurality of supports arranged at intervals along the circumference of the connecting ring 150 are provided in each annular region 110 The two ends of the supporting piece 130 are respectively connected to two adjacent connecting rings 150, and the adjacent supporting pieces 130 are separated by cutting holes 120, and the supporting piece 130 is turned over relative to the connecting ring 150 so that the supporting piece 130 protrudes Arranged...

Embodiment 2

[0055] The main difference between the present embodiment and the first embodiment lies in the shape of the cutting hole.

[0056] Such as Figure 6 to Figure 8 As shown, the cutting hole 120 is trapezoidal, and the width of the twisted part 140 before twisting is equal to the width of the support piece 130 before turning over. The advantage of this setting is that the cutting process is relatively simple and the cutting time is reduced.

Embodiment 3

[0058] The main difference between this embodiment and the first embodiment lies in the width of the annular region 110 .

[0059] The width of the annular area 110 gradually increases from the outermost annular area 110 to the innermost annular area 110 , and the width difference between adjacent annular areas 110 is set within a range of 0 mm to 3 mm.

[0060] It can be understood that the width of the annular region 110 may also gradually decrease from the outermost annular region 110 to the innermost annular region 110 .

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Abstract

The invention provides a dished filter disc for high-viscosity melt filtering. The dished filter disc comprises a supporting flow-guiding layer, the supporting flow-guiding layer comprises a pluralityof connection rings arranged concentrically, annular areas are formed between the adjacent connection rings, each annular area is internally provided with a plurality of supporting pieces arranged inthe circumferential direction of the corresponding connection ring in an evenly distributed mode at intervals, the two ends of each supporting piece are connected to the two corresponding adjacent connection rings correspondingly, the supporting pieces are overturned relative to the connecting rings so as to protrude out of the planes of the connection rings, and fluid flowing channels are formedby the spaces between the adjacent supporting pieces, the sizes in all the annular areas meet the calculation formula 1 (please see the specifications for the formula 1), and the ratios of the flowsof fluids in all the annular areas to the areas of the annular areas in the formula 1 are equal, so that the flow rate of a melt is uniform, and the ratio of the difference value between the perimeters of every two adjacent annular areas to the number of the supporting pieces in the two annular areas is controlled within the range of 0.3 to 4, and the filtration efficiency of the high viscosity melt can be ensured while the supporting strength of the supporting flow-guiding layer is ensured.

Description

technical field [0001] The invention relates to the technical field of filter devices, in particular to a dish-shaped filter disc used for filtering high-viscosity melts. Background technique [0002] The support layer in the middle of the traditional metal disc is supported by metal mesh: in the working condition of high-viscosity melt filtration, the melt passes through the filter layer and the filter support layer from both sides of the disc to the central support guide layer. And along the radial guide channel to the center outlet of the disc, the center hole of the disc runs through a section of sealed hollow shaft, which is used as a channel for the melt to flow out of the filter after filtration, and the flow of the melt in the guide channel lacks radial flow. Directionality will produce greater flow resistance, the flow rate of the filtered fluid will slow down, resulting in stagnation, and there will also be deterioration of the gel, and the metal mesh is easily def...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D29/15
CPCB01D29/15
Inventor 贾建东薛震
Owner HANGZHOU COBETTER FILTRATION EQUIP