CN215428253U - Pore diameter controllable high-strength water-through drain board filter membrane and drain board thereof - Google Patents

Abstract

The utility model relates to a pore diameter controllable high-strength water-through drainage plate filter membrane and a drainage plate thereof. The filter membrane of the controllable-aperture high-strength water-through drainage plate comprises a filter membrane layer, wherein at least one side surface of the filter membrane layer is fixedly connected with a reinforcing layer in a compounding manner; the filter membrane layer is filter cloth made of yarns, and the fiber denier of the filter cloth yarns is larger than 2D; the enhancement layer is the check cloth, and the net of check cloth comprises warp direction yarn and latitudinal direction yarn, and the warp direction length or latitudinal direction length of net is 4mm at least, and latitudinal direction length is greater than warp direction length. The utility model has the advantages of ingenious design, simple and practical structure; by adopting the filter membrane and the drain board thereof, the extremely small clay particles can be discharged with water under a larger equivalent aperture, and a silt blocking layer is avoided, so that the drainage quantity and the drainage speed can be kept stable and improved; meanwhile, the strength can be kept to meet the requirement, and the method is more suitable for practical use.

Description

Pore diameter controllable high-strength water-through drain board filter membrane and drain board thereof

Technical Field

The utility model relates to a pore diameter controllable high-strength water-through drainage plate filter membrane and a drainage plate thereof, belonging to the technical field of soft silt foundation treatment.

Background

In various engineering constructions (such as engineering constructions of water conservancy, electric power, roads, railways, ports, airports, buildings, municipal administration, environmental protection, military, oceans, agriculture and the like), a large soft silt base is often encountered, and a drainage plate is used for draining and solidifying the soft silt base in a current common treatment method. However, the soft silt foundation is very complicated, the particle size, grading, viscosity and the like of soil particles are different, and the specification and technical standard of the currently used drainage plate are established more than 20 years ago according to the current manufacturing capability and cognitive level, so that the drainage plate has some contradictions in the practical application process. At that time, it was generally accepted that the smaller the pore size of the drainage plate filter membrane, the better it is, the various clay particles can be retained, so that the equivalent pore size O was specified₉₅Less than or equal to 0.075mm, and is only slightly thicker than hair. However, with the accumulation of practice, it is widely believed by those in the industry that in practical use, the tiny clay particles are very easy to block the holes of the filter membrane of the drainage plate, which results in the decrease of the effective water passing capacity of the surface of the filter membrane of the drainage plate, leading to the serious decrease of the drainage speed, and the particles are gathered on the filter membrane of the drainage plate to gradually form a layer of silting layer with the resultant force of the soft silting soil with low permeability, thus seriously affecting the drainage performance, so that the water in the soft silting soil is not easy to drain, and greatly prolonging the drainage consolidation time of the foundation.

In view of the actual situation, many people propose to change a filter membrane with a large equivalent pore size to discharge the tiny clay particles along with water, so as to avoid blockage and form a silt blocking layer, thereby ensuring that the water discharge and the water discharge speed can be kept stable or improved. Meanwhile, because the total amount of the extremely small clay particles is not large actually, the clay particles are discharged with water without influencing the environment and the engineering. However, for the filter membrane, increasing the equivalent pore size thereof inevitably reduces the fiber density of the filter membrane to make the fiber arrangement more loose, which will result in the reduction of the strength of the filter membrane itself and hinder the application and popularization of the large-pore filter membrane.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: to the problem that above-mentioned prior art exists, provide a controllable aperture high strength and lead to water drain bar filter membrane, be exclusively used in the drain bar, can set up great equivalent aperture according to the demand, can keep intensity satisfying the requirement simultaneously, do benefit to popularization and application. Meanwhile, a drain board adopting the filter membrane is also provided.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a controllable aperture high-strength water-through drain board filter membrane comprises a filter membrane layer and is characterized in that at least one side surface of the filter membrane layer is fixedly connected with a reinforcing layer in a compounding manner; the filter membrane layer is filter cloth made of yarns, and the fiber denier of the filter cloth yarns is larger than 2D; the enhancement layer is net cloth, net cloth's net comprises warp direction yarn and latitudinal direction yarn, the warp direction length or the latitudinal direction length of net are 4mm at least, and latitudinal direction length is greater than warp direction length.

In this structure to net cloth links firmly with the filter membrane layer is compound as the enhancement layer, can be very big the intensity that improves whole filter membrane, and net cloth's net size is great simultaneously, and is very little to the influence of filter cloth drainage performance. After the structure is adopted, the equivalent aperture of the whole filter membrane can reach 0.3mm at most, and the filter membrane still has high strength and meets the actual use requirement.

Wherein, (1) to the fibre denier of filter cloth yarn, current drain bar filter membrane adopts the filter cloth of 1.5D yarn fibre denier usually, and the filter cloth that adopts yarn fibre denier to be greater than 2D can promote the single fiber brute force through adding thick fibre, and then promotes the holistic intensity of filter membrane, and simultaneously, the fibre adds thick back, and the space between adjacent fibre also changes the expansion, and then realizes great equivalent aperture more easily.

(2) For the size limitation of the grid cloth, the longitudinal length or the latitudinal length of the grid is at least 4mm, so that the grid cloth is sparse, and the drainage performance of the filter cloth is not influenced; the latitudinal length is greater than the longitudinal length, so that the requirement that the overall longitudinal strength of the filter membrane is higher than the latitudinal strength can be met.

It should be noted that both the filter cloth and the mesh cloth are prior art products, and the definition of the fiber denier of the filter cloth yarn and the definition of the warp direction length/weft direction length of the mesh cloth mesh are specific specifications of the prior art products, belonging to the definition of the product structure, wherein no improvement is provided for the material per se.

The drainage plate filter membrane can also adopt the following preferred scheme:

preferably, the filter cloth yarn has a fiber denier of greater than or equal to 3D.

More preferably, the filter cloth yarn has a fiber denier of 6D.

By adopting the preferable scheme, the strength of the whole filter membrane can be further improved by increasing the fiber denier of the filter cloth yarns, and the filter membrane can realize larger equivalent pore size more easily. When the fiber denier is 6D, 4 times of the fiber denier of the existing drain board filter membrane can achieve good enough effect.

Preferably, the fibers of the filter cloth are profiled fibers, and the cross section of the profiled fibers is in a cross shape.

By adopting the preferred scheme, the cross-shaped profiled fiber can be further utilized to realize larger equivalent aperture more easily.

Preferably, the warp length of the grid cloth grid is 5 +/-1 mm, and the weft length is 7 +/-2 mm.

More preferably, the length of the mesh cloth is 5mm in the warp direction and 7mm in the weft direction.

By adopting the preferable scheme, the size range of the grid cloth grid can be further optimized.

Preferably, the number of the warp yarns and the number of the weft yarns of the mesh fabric are respectively 60-80.

By adopting the preferred scheme, the yarn number of the gridding cloth can be further optimized, so that the gridding cloth can better play a role in strengthening the strength of the whole filter membrane.

Preferably, the material of the filter cloth yarn is polypropylene fiber.

Preferably, the warp yarns and the weft yarns of the mesh fabric are made of polyester fibers.

By adopting the preferable scheme, the specific materials of the filter cloth and the grid cloth can be further optimized.

The utility model also proposes:

a drainage plate comprises a plate core and a filter membrane, wherein the filter membrane is coated on the outer side of the plate core and is in contact with or fixedly connected with the plate core; the filter membrane is characterized by adopting the filter membrane with the controllable aperture and the high-strength water-passing and water-draining plate.

The utility model has the advantages of ingenious design and simple structure; by adopting the filter membrane and the drain board thereof, the tiny clay particles can be discharged along with water under a larger equivalent aperture, and a silt blocking layer is avoided from being formed, so that the drainage quantity and the drainage speed can be kept stable or improved; meanwhile, the strength can be kept to meet the requirement, and the popularization and the application are facilitated.

Drawings

The utility model will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic plan view of embodiment 1 of the present invention.

Fig. 2 is a schematic sectional view taken along line a-a of fig. 1.

Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.

Detailed Description

Example 1

As shown in fig. 1 to fig. 2, the filter membrane of the controllable aperture high-strength water-passing and water-draining plate of the embodiment includes a filter membrane layer 01, and at least one side surface of the filter membrane layer 01 is fixedly connected with a reinforcing layer 02 in a composite manner; the filter membrane layer 01 is filter cloth made of yarns, and the fiber denier of the filter cloth yarns is larger than 2D; the reinforcing layer 02 is a grid cloth, the grid of the grid cloth is composed of warp yarns and weft yarns, the warp length or weft length of the grid is at least 4mm, and the weft length L is larger than the warp length M. Note: in this embodiment, the reinforcing layer 02 is compositely fixedly connected to one side surface of the filter membrane layer 01, and the reinforcing layers 02 can also be compositely fixedly connected to two side surfaces of the filter membrane layer 01 according to requirements; the filter membrane layer 01 and the reinforcing layer 02 can be fixedly connected in a compounding way by adopting the prior technical means such as hot rolling adhesion and the like.

In particular, the fiber denier of the filter cloth yarn is preferably greater than or equal to 3D; in this example, the filter cloth yarn had a fiber denier of 6D. The fiber of the filter cloth adopts special-shaped fiber, and the cross section of the special-shaped fiber is in a cross shape. In addition, in this embodiment, the material of the filter cloth yarn is polypropylene fiber.

Specifically, the warp length of the grid cloth grid is 5 +/-1 mm, and the weft length is 7 +/-2 mm; in this embodiment, the warp length of the grid cloth grid is 5mm, and the weft length is 7 mm. The number of the warp yarns and the number of the weft yarns of the gridding cloth are respectively 60-80; in this embodiment, the number of warp yarns of the mesh fabric is 60, and the number of weft yarns of the mesh fabric is 80; the warp yarns and the weft yarns of the gridding cloth are made of polyester fibers.

Through detection, various performances of the controllable-aperture high-strength water-passing drainage plate filter membrane are superior to the performance standard of the existing drainage plate filter membrane, and details are shown in tables 1 and 2.

TABLE 1 Performance Standard of Current Drain plate Filter Membrane

TABLE 2 Performance parameters of the filters of this example

Example 2

As shown in fig. 3, the drainage plate of this embodiment includes a plate core 11 and a filter membrane 12, the filter membrane 12 is wrapped outside the plate core 11, and the filter membrane 11 is in contact with the plate core (i.e. both are separable) or fixedly connected (i.e. both are welded, i.e. both are integral); the filter membrane 11 is the filter membrane of the controllable-aperture high-strength water-passing and water-draining plate in the embodiment 1.

In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.

Claims (10)

1. A controllable aperture high-strength water-through drain board filter membrane comprises a filter membrane layer and is characterized in that at least one side surface of the filter membrane layer is fixedly connected with a reinforcing layer in a compounding manner; the filter membrane layer is filter cloth made of yarns, and the fiber denier of the filter cloth yarns is larger than 2D; the enhancement layer is net cloth, net cloth's net comprises warp direction yarn and latitudinal direction yarn, the warp direction length or latitudinal direction length of net are 4mm at least, and latitudinal direction length is greater than warp direction length.

2. The membrane of claim 1, wherein the filter cloth yarn has a fiber denier of greater than or equal to 3D.

3. The controlled pore size high tenacity water flux drain plate filter membrane of claim 2, wherein the filter cloth yarn has a fiber denier of 6D.

4. The filter membrane of claim 1, wherein the filter cloth is made of shaped fiber with cross-section.

5. The filter membrane of claim 1, wherein the length of the grid cloth is 5 ± 1mm in the warp direction and 7 ± 2mm in the weft direction.

6. The filter membrane of claim 5, wherein the length of the grid cloth is 5mm in the warp direction and 7mm in the weft direction.

7. The filter membrane of claim 1, wherein the number of warp yarns and the number of weft yarns of the mesh fabric are 60 to 80.

8. The controllable pore size high-strength water-passing and water-draining board filter membrane according to any one of claims 1 to 7, wherein the material of the filter cloth yarn is polypropylene fiber.

9. The controllable pore size high-strength water-passing and water-draining board filter membrane according to any one of claims 1 to 7, wherein the warp yarns and the weft yarns of the mesh fabric are respectively polyester fibers.

10. A drainage plate comprises a plate core and a filter membrane, wherein the filter membrane is coated on the outer side of the plate core and is in contact with or fixedly connected with the plate core; the filter membrane is characterized in that the filter membrane adopts the filter membrane with controllable pore size and high strength water-passing and drainage plate of any one of claims 1 to 9.

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