CN211358000U - A high-precision composite filter cloth - Google Patents

Abstract

A high-precision composite filter cloth comprises three cloth layers of filter paper 1, non-woven fabric 2 and woven fabric 3, wherein the three layers of the filter paper 1, the non-woven fabric 2 and the woven fabric 3 are bonded with each other in a combination form of equally spaced and uniform point-shaped bonding points 3, strip-shaped bonding strips 4, the point-shaped bonding points 3 and the strip-shaped bonding strips 4; the filter cloth has the characteristic of graded filtration, most of impurities with large volume can be filtered by the woven filter cloth, the impurities penetrating through the woven filter cloth can be partially intercepted by the non-woven fabric, and the remaining extremely small impurities are further intercepted by the filter paper, so that the filter precision and the clarity are improved, the service life of the filter cloth is prolonged, and the characteristics of higher dust removal and filtration requirements can be met.

Description

A high-precision composite filter cloth

technical field

The utility model patent relates to the technical field of filter cloth, in particular to a high-precision composite filter cloth for liquid-solid separation filtering equipment such as box-type filter presses and rotary drum vacuum filters.

Background technique

At present, the performance and quality requirements of liquid-solid separation filtration equipment are constantly improving, and most of the commonly used filter cloths are single woven, knitted, non-woven, filter paper, woven and non-woven. Use cloth; among them, the woven filter cloth has high strength and good detachability of the filter cake, and the reuse rate after cleaning is high or the regeneration performance is high; the filter paper has high filtration precision and accurate gap size, but the strength is low and cannot be reused ; The filtration performance of non-woven fabrics is between that of woven filter cloth and filter paper, and has a certain dust-holding capacity, which will cause blockage after long-term use; filtration of woven and non-woven composite filter cloth The dust shaking and falling effect and the dust filtering effect are good, and the service life is also long, but the filtering accuracy and filtering effect need to be further improved.

Utility model content

The purpose of the patent of this utility model is to solve the above-mentioned problems existing in the existing filter cloth technology, and provide a high-precision composite filter cloth, which is realized through the following technical solutions: a high-precision composite filter cloth, which is characterized in that: it includes filter paper 1, The three layers of the non-woven fabric 2 and the woven fabric 3; the filter paper 1 is composed of fibers and has a certain size of gaps; the non-woven fabric 2 is a fiber web composed of thermoplastic fibers; The woven fabric 3 is a grid-like, plain weave fabric, and the plain weave fabric is woven from a number of warp threads and weft threads, wherein the warp threads and weft threads are perpendicular to each other; the three layers of filter paper 1, non-woven fabric 2, and woven fabric 3 are mutually Between the equidistant and uniform dot glue points 4, or strip glue 5, or a combination of dot glue points 4 and strip glue 5, the distance between the dot glue points 4 or the strip glue 5 is measured. : L is the length of the spacing, the value is 20, 25, 30, 35, 40, 45, 50, 60, 70, 80mm, W is the width of the spacing, and the value is 20, 25, 30, 35, 40, 45 , 50, 60, 70, 80mm, where L and W can be combined with any value.

The beneficial effects of the utility model are as follows: a high-precision composite filter cloth, comprising three layers of filter paper 1, non-woven fabric 2, and woven cloth 3, and the three layers of filter paper 1, non-woven fabric 2, and woven cloth 3 are mutually They are glued together in a combination of equidistant and evenly spaced dot glue points 4, strip glue 5, dot glue dots 4 and strip glue 5; this filter cloth has the characteristics of grading filtration, and most of them are larger in volume. The impurities can be filtered out by the woven cloth 3, and the impurities passing through the woven cloth 3 can be partially retained by the non-woven fabric 2, and the remaining very small impurities are further retained by the filter paper 1, which improves the filtration accuracy and clarity, and prolongs the time. The service life of the filter cloth can meet the characteristics of higher dust removal and filtration requirements.

Description of drawings

1 is a cross-sectional view of a high-precision composite filter cloth of the present invention;

FIG. 2 is a top view of FIG. 1 .

In the figure, 1. filter paper; 2. non-woven fabric; 3. woven fabric; 4. point-like glue point; 5. strip-like glue.

Detailed ways

A high-precision composite filter cloth, as shown in Figures 1 and 2, includes three layers of filter paper 1, non-woven fabric 2, and woven cloth 3; the filter paper 1 is composed of fibers and has certain specifications The size of the gap; the non-woven fabric 2 is a fiber web composed of thermoplastic fibers; the woven fabric 3 is a grid-like, plain weave fabric, and the plain weave fabric is woven from a number of warps and wefts, wherein the warp and the weft are perpendicular to each other; the three layers of filter paper 1, non-woven fabric 2, and woven fabric 3 are equidistant and uniform with point-like glue points 4, or strip-like glue 5, or point-like glue points 4 and strips. The combined form of gluing 5 is used for gluing, and the spacing size of point gluing point 4 or strip gluing 5: L is the length of the gap, and the value is 20, 25, 30, 35, 40, 45, 50, 60, 70, 80mm, W is the width of the spacing, the values are 20, 25, 30, 35, 40, 45, 50, 60, 70, 80mm, and L and W can be combined with any value.

Claims (1)

1. The utility model provides a high accuracy composite filter cloth which characterized in that: the cloth comprises three cloth layers of filter paper (1), non-woven fabric (2) and woven fabric (3); the filter paper (1) is composed of fibers and has a gap with a certain specification and size; the nonwoven fabric (2) is a fiber web composed of thermoplastic fibers; the woven fabric (3) is a latticed plain woven fabric, and the plain woven fabric is formed by weaving a plurality of warps and wefts, wherein the warps and the wefts are vertical to each other; the three layers of the filter paper (1), the non-woven fabric (2) and the woven fabric (3) are mutually bonded in the combination form of equal-distance and uniform point-shaped bonding points (4), strip-shaped bonding points (5) or point-shaped bonding points (4) and strip-shaped bonding points (5), and the distance between the point-shaped bonding points (4) or the strip-shaped bonding points (5) is as follows: l is the length of the space and takes the values of 20, 25, 30, 35, 40, 45, 50, 60, 70 and 80mm, W is the width of the space and takes the values of 20, 25, 30, 35, 40, 45, 50, 60, 70 and 80mm, wherein L and W can be combined by taking any one value respectively.

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