Durable spiral net with stable air permeability

Abstract

The utility model discloses a durable spiral net with stable air permeability, which comprises a left-hand spiral ring (1) and a right-hand spiral ring (2) which are wound by monofilaments, and the left-hand spiral ring (1) and the right-hand spiral ring (2) are sequentially and circularly crossed together to form a crossed hole (3) which is penetrated by string ring monofilaments (4) to form the spiral net. A corresponding cross-linking core wire (5) is inserted into the left-hand spiral ring (1) in the same column and / or a corresponding cross-linking core wire (5) is inserted into the right-hand spiral ring (2) in the same column, the cross-linking core wire (5) comprises a plurality of cross-linking monofilaments (51) which are arranged in parallel, and the cross-linking monofilaments (51) are fixedly connected through cross-linking points (52) to form the cross-linking core wire (5). According to the durable spiral net with the stable air permeability, the stability of the air permeability of the net surface can be guaranteed in the solid-liquid separation machining process, the solid-liquid separation efficiency is improved, meanwhile, the strength of the net surface is enhanced, the spiral net is durable, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of spiral mesh technology, specifically a durable spiral mesh with stable air permeability. Background Technology

[0002] Spiral filter mesh is an industrial material widely used in filtration, separation, and protection. Also known as spiral dewatering mesh, it refers to a spiral dry mesh with internal core wires (round or flat wires) to change air permeability and density, thus meeting the solid-liquid separation process requirements of various industries. The core insertion process, by uniformly filling the internal space of the spiral mesh with core wires, significantly improves the filtration accuracy and efficiency of the polyester spiral mesh. The core wires are tightly interwoven with the outer layer of the spiral mesh, forming a multi-layered filtration structure that can more effectively capture impurities of different particle sizes. The diameter, material, and filling density of the core wires can be adjusted according to specific filtration needs, thereby achieving precise control of filtration accuracy.

[0003] Existing polyester spiral mesh generally uses several independent core wires inserted side by side into the spiral mesh holes. In applications such as sludge dewatering and juice pressing, it needs to withstand external forces such as liquid pressure and impurity impact for a long time. Since the core wires in the spiral mesh are not connected to each other and each core wire is independent, the core wire is easily deformed by the compression of solid materials. This not only results in unstable air permeability and uneven water permeability, but also low filtration efficiency and easy material leakage, reducing the service life of the spiral mesh. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the prior art by providing a durable spiral mesh with stable air permeability. This durable spiral mesh with stable air permeability can ensure the stability of the mesh surface air permeability during solid-liquid separation processing, improve the solid-liquid separation efficiency, enhance the stability of the spiral mesh structure, make it durable, and extend its service life.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A durable spiral mesh with stable air permeability includes left-hand spiral rings and right-hand spiral rings wound with monofilaments. The left-hand spiral rings and right-hand spiral rings are interlaced in a series of intersecting holes to form a spiral mesh. The feature is that a corresponding cross-linked core wire is inserted in the same column of left-hand spiral rings and / or a corresponding cross-linked core wire is inserted in the same column of right-hand spiral rings. The cross-linked core wire includes multiple cross-linked monofilaments arranged in parallel. The cross-linked monofilaments are fixedly connected by cross-linking points to form the cross-linked core wire.

[0007] The cross-linked core filaments are arranged parallel to the loop monofilaments.

[0008] A preferred option is to center the cross-linked core wire in the left-right direction.

[0009] In the direction perpendicular to the extension of the monofilament, the width of the cross-linked core filament inserted into the right-handed spiral ring is smaller than the distance between two adjacent left-handed spiral rings.

[0010] In the direction perpendicular to the extension of the monofilament, the width of the cross-linked core filament inserted into the left-handed spiral ring is smaller than the distance between two adjacent right-handed spiral rings.

[0011] Along the extension direction of the monofilament, the spacing between the cross-linking points on the cross-linked core filament is 10cm to 30cm.

[0012] The crosslinking points are formed by melting and solidifying adjacent crosslinked monofilaments together, or by bonding and solidifying adjacent crosslinked monofilaments with molten hot melt adhesive.

[0013] The melt-curing crosslinking method includes, but is not limited to, hot melting and ultrasonic welding. For example, melt-curing crosslinking uses ultrasonic welding with an ultrasonic power of not less than 1000W and an ultrasonic dwell time of not less than 2s, so that the temperature of the crosslinked monofilament is controlled within the range of -30℃ to +10℃ of the melting point of the crosslinked monofilament, so that adjacent crosslinked monofilaments in the same cross-sectional area soften and adhere to each other, solidify and generate crosslinking points.

[0014] When hot melt adhesive is used to prepare crosslinking points, the molten hot melt adhesive fills the gaps between adjacent crosslinked monofilaments or wraps the crosslinked monofilaments in the same crosslinked core wire, so that adjacent crosslinked monofilaments in the same cross-sectional area are bonded and cured by the molten hot melt adhesive to form crosslinking points; the hot melt adhesive is selected with a melting temperature of 80℃-140℃, preferably a hot melt adhesive with a melting temperature of 80℃-110℃.

[0015] There are cross-linking gaps between the cross-linked monofilaments within the cross-linked core wire.

[0016] The ratio of the minimum width of the crosslinking gap to the diameter of the crosslinking monofilament is 0.05 to 0.2:1, and the minimum width is the distance between two adjacent crosslinking monofilaments; the maximum width of the crosslinking gap ranges from 0.5 mm to 1.3 mm, and the maximum width is the distance between the centers of two adjacent crosslinking monofilaments.

[0017] The crosslinking points can fill a portion of the crosslinking gap, or fill the entire crosslinking gap without overflowing, or fill the crosslinking gap and wrap the corresponding crosslinked monofilament.

[0018] The left-handed and right-handed spiral rings, tandem monofilaments, and cross-linked monofilaments used include, but are not limited to, round and flat monofilaments, with a diameter range of 0.4 mm to 1.1 mm.

[0019] The durable spiral mesh with stable air permeability provided by this utility model has an air permeability range of 600-1600 L / m. 2 / s, therefore it can be customized according to needs, such as a breathability of 600-800L / m 2 / s spiral mesh, air permeability 800-1000L / m 2 / s spiral mesh, air permeability 1000-1200L / m 2 / s spiral mesh, air permeability 1200-1600L / m 2 Spiral mesh, etc. (e.g., / s)

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] The spiral mesh provided by this utility model has cross-linked core filaments inserted into the left-handed and / or right-handed spiral rings. The cross-linked core filaments are cross-linked and solidified by a melt solidification technology, thereby forming a continuous overall structure of cross-linked core filaments. The cross-linking gaps of the cross-linked core filaments themselves, as well as the gaps between the cross-linked core filaments and the inner walls of the left-handed or right-handed spiral rings, can ensure the stability of the air permeability of the spiral mesh, thus ensuring high water permeability. At the same time, the cross-linking points of the cross-linked core filaments are firm and have good stability, which improves the durability of the spiral mesh and extends its service life. The processing method is simple, easy to operate, and pollution-free.

[0022] The cross-linked core wire provided by this utility model, when filled into the spiral mesh, enables the interconnection of several cross-linked monofilaments within the cross-linked core wire inserted into the spiral mesh, enhancing the connection strength between the cross-linked core wires. This allows them to withstand greater external forces without easily deforming or breaking, avoiding the phenomenon of single independent core wires being squeezed and deformed, thus increasing the gaps between the core wires. This solves the problems of material leakage and low filtration efficiency during the use of the spiral mesh, improving the durability and service life of the product. Attached Figure Description

[0023] Appendix Figure 1 A plan view of the durable spiral mesh with stable air permeability provided by this utility model;

[0024] Appendix Figure 2 A schematic diagram of the structure of the durable spiral mesh with stable air permeability provided by this utility model.

[0025] Wherein: 1—left-handed spiral ring; 2—right-handed spiral ring; 3—cross-hole; 4—string of monofilaments; 5—cross-linked core filament; 51—cross-linked monofilament; 52—cross-linking point; 53—cross-linking gap. Detailed Implementation

[0026] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0027] The terms “a,” “one,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended meaning of inclusion and that other elements / components / etc. may exist in addition to the listed elements / components / etc.

[0028] like Figure 1-2 As shown: A durable spiral mesh with stable air permeability includes left-hand spiral rings 1 and right-hand spiral rings 2 wound with monofilaments. The left-hand spiral rings 1 and right-hand spiral rings 2 are sequentially interwoven to form a cross-hole 3, through which loop monofilaments 4 are inserted to form a spiral mesh. A corresponding cross-linked core filament 5 is inserted in the same column of left-hand spiral rings 1 and / or a corresponding cross-linked core filament 5 is inserted in the same column of right-hand spiral rings 2. The cross-linked core filament 5 includes multiple cross-linked monofilaments 51 arranged in parallel. The cross-linked monofilaments 51 are fixedly connected by cross-linking points 52 to form the cross-linked core filament 5. The monofilaments used in the above-mentioned left-hand spiral rings 1 and right-hand spiral rings 2, loop monofilaments 4, and cross-linked monofilaments 51 include, but are not limited to, round filaments and flat filaments, and the diameter of the monofilaments ranges from 0.4 mm to 1.1 mm.

[0029] To improve the stability of the air permeability of the spiral mesh and enhance the filtration effect, the cross-linked core filament 5 is set parallel to the ring monofilament 4 and placed in the gap within the left-hand spiral ring 1 and / or the right-hand spiral ring 2.

[0030] Because the left-handed spiral ring 1 and the right-handed spiral ring 2 alternately interweave, they overlap, thus reducing the space inside any spiral ring. Therefore, in the direction perpendicular to the extension of the monofilament 4, the width of the cross-linked core filament 5 inserted into the right-handed spiral ring 2 is smaller than the distance between two adjacent left-handed spiral rings 1, and / or the width of the cross-linked core filament 5 inserted into the left-handed spiral ring 1 is smaller than the distance between two adjacent right-handed spiral rings 2.

[0031] In a durable spiral mesh with stable air permeability, there is a cross-linking gap 53 between the cross-linked monofilaments 51 in the cross-linked core filament 5. The ratio of the minimum width of the cross-linking gap 53 to the diameter of the cross-linked monofilament 51 is 0.05 to 0.2:1, and the minimum width is the distance between two adjacent cross-linked monofilaments 51.

[0032] In a durable spiral mesh with stable air permeability, the cross-linking points 52 on the cross-linked core filament 5 are arranged at intervals of 10cm to 30cm along the extension direction of the loop monofilament 4. The cross-linking points 52 are formed by melting and solidifying adjacent cross-linked monofilaments 51 together, or by bonding and solidifying adjacent cross-linked monofilaments 51 with molten hot melt adhesive.

[0033] It should be noted that the spiral mesh provided by this utility model has uniform and stable air permeability, ensuring high water permeability and improving the filtration effect of solid-liquid separation. Example

[0034] One embodiment provides a durable spiral mesh with stable air permeability, such as Figure 1 , Figure 2 As shown. Figure 1 As shown, the spiral rings are made of polyester monofilaments. There are two types of spiral rings: left-hand spiral rings 1 and right-hand spiral rings 2. One left-hand spiral ring 1 and one right-hand spiral ring 2 are sequentially intertwined and crossed. A series of monofilaments 4 are inserted into the cross-holes 3 formed after the left-hand spiral ring 1 and the right-hand spiral ring 2 cross, forming a spiral network. Cross-linked core filaments 5 are filled into each column of left-hand spiral ring 1 and each column of right-hand spiral ring 2. The cross-linked core filament 5 consists of four cross-linked monofilaments 51 arranged in parallel. There is a certain cross-linking gap 53 between adjacent cross-linked monofilaments 51. The cross-linked monofilaments 51 are round wires with a diameter of 1.0 mm, and the width of the cross-linking gap 53 is 0.12 mm. Cross-linking points 52 are arranged on the cross-linked core filament 5 at intervals of 15 cm. The cross-linking points 52 are formed by ultrasonically melting and solidifying adjacent cross-linked monofilaments 51. The same cross-linking point 52 can fix and connect multiple cross-linked monofilaments 51 in the same cross-sectional area within the cross-linked core filament 5.

[0035] In this embodiment, a durable spiral mesh with stable air permeability is provided. During the filtration process, the cross-linked core fibers 5 can interact with each other, improving the channel uniformity of the cross-linked core fibers 5 in the spiral mesh product during filtration processes such as sludge dewatering and juice pressing. This ensures stable air permeability of the spiral mesh, improves its filtration efficiency, enhances its durability, and extends its service life.

[0036] The cross-linked monofilaments 51 in the cross-linked core filaments 5 of the durable spiral mesh with stable air permeability provided by this invention are interconnected, enhancing the connection strength between the cross-linked core filaments 5. This allows them to withstand greater external forces without easily deforming or breaking, avoiding the phenomenon of increased gaps between core filaments due to compression deformation of individual core filaments. This solves the problems of material leakage and low filtration efficiency in spiral mesh during use. It also ensures uniform cross-linking gaps between the cross-linked monofilaments 51 in the cross-linked core filaments 5, guaranteeing the uniformity of the water permeability channels and improving the stability of the air permeability of the spiral mesh, thereby improving the filtration efficiency of solid-liquid separation. At the same time, the cross-linking structure of the cross-linked core filaments enhances the connection strength, thereby improving the durability and service life of the product.

[0037] In this embodiment of the invention, the term "multiple" refers to two or more, unless otherwise explicitly defined. The terms "install," "connect," and "fix" should be interpreted broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0038] In the description of the embodiments of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0039] In this specification, the terms "an embodiment," "a preferred embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The above embodiments are only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the scope of protection of this utility model. Technologies not covered by this utility model can be implemented by existing technologies.

Claims

1. A durable spiral mesh with stable air permeability, comprising a left-hand spiral loop (1) and a right-hand spiral loop (2) wound from monofilaments, wherein the left-hand spiral loop (1) and the right-hand spiral loop (2) are sequentially interwoven to form a cross hole (3), through which loop monofilaments (4) are inserted to form a spiral mesh, characterized in that: A corresponding cross-linked core wire (5) is inserted into the left-hand spiral ring (1) in the same column and / or a corresponding cross-linked core wire (5) is inserted into the right-hand spiral ring (2) in the same column. The cross-linked core wire (5) includes multiple cross-linked monofilaments (51) arranged in parallel. The cross-linked monofilaments (51) are fixedly connected by cross-linking points (52) to form the cross-linked core wire (5).

2. The durable spiral mesh with stable air permeability according to claim 1, characterized in that: The cross-linked core filament (5) is arranged parallel to the loop monofilament (4).

3. The durable spiral mesh with stable air permeability according to claim 1, characterized in that: The durable spiral mesh with stable air permeability has an air permeability range of 600-1600 L / m. 2 / s.

4. The durable spiral mesh with stable air permeability according to claim 1, characterized in that: In the direction perpendicular to the extension of the monofilament (4), the width of the cross-linked core filament (5) inserted into the right-hand spiral ring (2) is smaller than the distance between two adjacent left-hand spiral rings (1).

5. The durable spiral mesh with stable air permeability according to claim 1, characterized in that: In the direction perpendicular to the extension of the monofilament (4), the width of the cross-linked core filament (5) inserted into the left-handed spiral ring (1) is smaller than the distance between two adjacent right-handed spiral rings (2).

6. The durable spiral mesh with stable air permeability according to claim 1, characterized in that: Along the extension direction of the loop monofilament (4), the spacing between the cross-linking points (52) on the cross-linked core filament (5) is 10cm to 30cm.

7. The durable spiral mesh with stable air permeability according to claim 1 or 6, characterized in that: The crosslinking points (52) are formed by melting and solidifying adjacent crosslinked monofilaments (51) together, or by bonding and solidifying adjacent crosslinked monofilaments (51) with molten hot melt adhesive.

8. The durable spiral mesh with stable air permeability according to claim 1, characterized in that: The cross-linked core filament (5) has cross-linking gaps (53) between the cross-linked monofilaments (51).

9. The durable spiral mesh with stable air permeability according to claim 8, characterized in that: The ratio of the minimum width of the crosslinking gap (53) to the diameter of the crosslinking monofilament (51) is 0.05 to 0.2:1, and the minimum width is the distance between two adjacent crosslinking monofilaments (51).

10. The durable spiral mesh with stable air permeability according to claim 1, characterized in that: The monofilaments used in the left-handed spiral ring (1), right-handed spiral ring (2), tandem monofilament (4), and cross-linked monofilament (51) include, but are not limited to, round and flat monofilaments, with a diameter range of 0.4 mm to 1.1 mm.

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