1. A novel high flux plush filter cloth for treating sewage by a non-carding process is characterized in that wool yarns of the filter cloth are heavy mesh yarns; the warp knitting opening of the filter cloth is 34 mm; the hair length of the filter cloth is 8-15 mm;

the filter cloth is prepared by warping, warp knitting, planning, drying and shearing in sequence; the manufacturing method of the filter cloth does not comprise a carding process.

2. The novel high flux plush filter cloth for the non-carding process sewage treatment as claimed in claim 1, is characterized in that the manufacturing method of the filter cloth comprises the following steps:

step one, warping: plying the polyester or acrylic 225D96F net-free low-stretch yarns into S + Z twisted 450D192F heavy net low-stretch yarns as wool yarns; taking 21-26D polyester 150D monofilament semi-dull or hot-melt yarns as ground yarns;

step two, warp knitting: knitting the wool yarns and the bottom yarns by a warp knitting machine to obtain a gray cloth;

step three, scutching: planing the woven gray cloth by a planing machine to obtain coarse cloth;

step four, drying: coating a fabric stiffening agent on the back net of the wool cloth, and drying;

step five, shearing: and (4) shearing and flattening the dried coarse cotton cloth to form and polish, wherein the coarse surface becomes soft and bright to obtain the filter cloth.

3. The novel non-carding process sewage treatment high flux plush filter cloth according to claim 1, characterized in that, in the second step, the warp knitting machine is a double bed 16-needle mechanical warp knitting machine.

4. The new high flux plush filter cloth for treating sewage by a non-carding process as claimed in claim 1, wherein in the second step, the knitting method of the warp knitting machine is one of two-through-two, one-through-one-through and two-through-one-through.

5. The novel high flux plush filter cloth for the combless process sewage treatment as claimed in claim 1, wherein the drying temperature in the fourth step is 120-180 ℃.

Background

Sewage treatment is a process of purifying sewage to meet the water quality requirement of discharging the sewage into a certain water body or reusing the sewage. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people. SS suspended solids in water can be seen by naked eyes, the particles mainly comprise silt, clay, protozoa, algae, bacteria, viruses, high molecular organic matters and the like, are often suspended in water flow, and are caused by turbidity of the water, and the substances need to be continuously filtered to ensure that the water is continuously purified and need to be filtered by filter cloth.

The traditional filter cloth is made by warping, warp knitting, planning, shaping, carding, shearing or repeated several procedures;

warp knitting bottom yarns and wool yarns into grey cloth, planing the grey cloth into wool cloth, shaping the wool cloth, and carding and shearing to obtain finished filter cloth; the carding process is to comb open the fluff fiber, the fluff fiber is bundled in front of the fluff fiber, and the fluff is combed completely through a carding machine, so that the fluff on the surface of the filter cloth is ensured to be fluffy; the traditional filter cloth manufacturing method is more, the time consumption is longer, and the manufacturing cost of the filter cloth cannot be reduced.

Disclosure of Invention

The invention aims to provide the novel high-flux plush filter cloth for the sewage treatment in the non-carding process, which has the advantages of improving the manufacturing speed and the yield, reducing the manufacturing cost, facilitating the drainage and the mud suction, and prolonging the service life of sewage treatment equipment and filter cloth.

The purpose of the invention can be realized by the following technical scheme:

a novel high flux plush filter cloth for treating sewage by a non-carding process, the wool yarn of the filter cloth is heavy mesh; the warp knitting opening of the filter cloth is 34 mm; the hair length of the filter cloth is 8-15 mm;

the filter cloth is prepared by warping, warp knitting, planning, drying and shearing in sequence; the manufacturing method of the filter cloth does not comprise a carding process;

the manufacturing method of the filter cloth comprises the following steps:

step one, warping: plying the polyester or acrylic 225D96F net-free low-stretch yarns into S + Z twisted 450D192F heavy net low-stretch yarns as wool yarns; taking 21-26D polyester 150D monofilament semi-dull or hot-melt yarns as ground yarns;

step two, warp knitting: knitting the wool yarns and the bottom yarns by a warp knitting machine to obtain a gray cloth;

step three, scutching: planing the woven gray cloth by a planing machine to obtain coarse cloth;

step four, drying: coating a fabric stiffening agent on the back net of the wool cloth, and drying;

step five, shearing: the dried coarse cotton cloth is cut flat and molded to be scalded, and the coarse surface becomes soft and bright to obtain the filter cloth;

in the second step, the warp knitting machine is a double-bed 16-needle mechanical warp feeding knitting machine;

in the second step, the knitting method of the warp feeding knitting machine is one of two-space-two, one-space-one and two-space-one;

in the fourth step, the drying temperature is 120-180 ℃.

The invention provides novel high-flux plush filter cloth for sewage treatment in a non-carding process, which has the characteristics of improving the manufacturing speed and yield, reducing the manufacturing cost, facilitating drainage and sludge suction, and prolonging the service life of sewage treatment equipment and filter cloth. The invention has the beneficial effects that: the filter cloth is prepared by warping, warp knitting, planning, drying and shearing in sequence; the manufacturing method of the filter cloth does not comprise a carding process, the preparation process of the filter cloth adopts the characteristic of heavy mesh wire of a non-carding process and has a heavy mesh node principle, and the roots of wool yarns are vertically thin and thick without being separated by the carding process, so that drainage and mud suction are facilitated;

the manufacturing method of the filter cloth improves the manufacturing speed and the yield of the filter cloth and reduces the manufacturing cost;

the folded S + Z twisted wool yarns of the filter cloth are easy to shrink and become thick and then become slightly hard, the thick blocking effect of the wool ends of the filter cloth after shrinkage is ideal, and long-time comparison tests show that the filter cloth has the same blocking effect as the wool surface of the base cloth with the carding process in the prior art, so that floating or suspended SS suspended solids in sewage are captured by flowing through the wool surface through the filter cloth; when the rough surface blocking effect reaches a certain value, the water permeating effect is poor, the water level rises, the reverse suction device is opened at the moment, sludge on the rough surface is sucked off and floats or floats, the water passing effect is improved again, the water is circulated repeatedly, the thickness of the root part of the filter cloth felt is beneficial to sucking box sludge and accelerating drainage, the reverse suction box can suck the sludge and remove the dirt to achieve a better effect, and the final finished product is 550-600 g per square; the filter cloth with the hair length of 8-15 mm is determined according to the requirements of customers and the requirement of reducing SS suspended solids;

the filter cloth changes the wool yarn density through different penetrating modes, so that the application environment of the filter cloth is adapted;

the physical properties of the plied S + Z twisted wool yarns can shrink at 120-180 ℃; in the process of drying the coarse cotton cloth at the high temperature of 120-180 ℃, the coarse cotton yarn on the coarse cotton cloth is adhered to the back net and is strengthened under the warp-knitted binding, the cloth surface of the back net becomes slightly hard, and the coarse cotton cloth is changed into 10-16 mm in length due to the change of the drying temperature so as to form a thick barrier layer;

the filter cloth has better mud suction and water communication effects, so that the starting frequency of a backwashing device for sewage treatment can be reduced, and the service lives of equipment and the filter cloth are prolonged; the manufacturing method of the filter cloth of the carding process in the conventional long wool flannelette production process is omitted, the benefits of production enterprises are increased, and the production cost is reduced.

Detailed Description

The purpose of the invention can be realized by the following technical scheme:

a novel high flux plush filter cloth for treating sewage by a non-carding process, the wool yarn of the filter cloth is heavy mesh; the warp knitting opening of the filter cloth is 34 mm; the hair length of the filter cloth is 8-15 mm; in the preparation process of the filter cloth, the characteristics of heavy mesh wires in a non-carding process and the principle of heavy mesh nodes are adopted, and the roots of wool yarns are vertically thin and thick without being separated by the carding process, so that drainage and mud suction are facilitated;

the filter cloth is prepared by warping, warp knitting, planning, drying and shearing in sequence; the manufacturing method of the filter cloth does not comprise a carding process, improves the manufacturing speed and the yield of the filter cloth, and reduces the manufacturing cost;

the manufacturing method of the filter cloth comprises the following steps:

step one, warping: plying the polyester or acrylic 225D96F net-free low-stretch yarns into S + Z twisted 450D192F heavy net low-stretch yarns as wool yarns; taking 21-26D polyester 150D monofilament semi-dull or hot-melt yarns as ground yarns;

step two, warp knitting: knitting the wool yarns and the bottom yarns by a warp knitting machine to obtain a gray cloth;

step three, scutching: planing the woven gray cloth by a planing machine to obtain coarse cloth;

step four, drying: coating a fabric stiffening agent on the back net of the wool cloth, and drying;

step five, shearing: the dried coarse cotton cloth is cut flat and molded to be scalded, and the coarse surface becomes soft and bright to obtain the filter cloth; the folded S + Z twisted wool yarns of the filter cloth are easy to shrink and become thick and then become slightly hard, the thick blocking effect of the wool ends of the filter cloth after shrinkage is ideal, and long-time comparison tests show that the filter cloth has the same blocking effect as the wool surface of the base cloth with the carding process in the prior art, so that floating or suspended SS suspended solids in sewage are captured by flowing through the wool surface through the filter cloth; when the rough surface blocking effect reaches a certain value, the water permeating effect is poor, the water level rises, the reverse suction device is opened at the moment, sludge on the rough surface is sucked off and floats or floats, the water passing effect is improved again, the water is circulated repeatedly, the thickness of the root part of the filter cloth felt is beneficial to sucking box sludge and accelerating drainage, the reverse suction box can suck the sludge and remove the dirt to achieve a better effect, and the final finished product is 550-600 g per square; the filter cloth with the hair length of 8-15 mm is determined according to the requirements of customers and the requirement of reducing SS suspended solids;

in the second step, the warp knitting machine is a double-bed 16-needle mechanical warp feeding knitting machine;

in the second step, the knitting method of the warp feeding knitting machine is one of two-space-two, one-space-one and two-space-one; the filter cloth changes the wool yarn density through different penetrating modes, so that the application environment of the filter cloth is adapted;

in the fourth step, the drying temperature is 120-180 ℃; the physical properties of the plied S + Z twisted wool yarns can shrink at 120-180 ℃; in the high-temperature drying process of the coarse cotton cloth at 120-180 ℃, the coarse cotton yarns on the coarse cotton cloth are adhered to the back net, and meanwhile, the coarse cotton yarns are firmer under the warp-knitted binding, the cloth surface of the back net becomes slightly hard, and the coarse cotton cloth is changed into 10-16 mm in length due to the change of the drying temperature, so that a thick barrier layer is formed.

Example 1

A novel wool-free process sewage treatment high-flux plush filter cloth and a manufacturing method thereof comprise the following steps:

step one, warping: plying the polyester or acrylic 225D96F net-free low-stretch yarns into S + Z twisted 450D192F heavy net low-stretch yarns as wool yarns; taking a polyester 150D monofilament semi-dull or hot-melt yarn 26D as a ground yarn, and setting the warp knitting opening to be 34 mm;

step two, warp knitting: knitting the wool yarns and the bottom yarns by a double-bed 16-needle mechanical warp feeding warp knitting machine by using a warp knitting machine to obtain gray cloth;

step three, scutching: planing the woven gray cloth by a planing machine to obtain coarse cloth;

step four, drying: coating a fabric stiffening agent on the back net of the wool cloth, and drying; the hair length of the dried coarse cotton cloth is 10-16 mm;

step five, shearing: the dried coarse cotton cloth is cut flat and molded to be scalded, the coarse surface becomes soft and bright to obtain the filter cloth, and the hair length of the filter cloth is 8-12 mm; the folded S + Z twisted wool yarns of the filter cloth are easy to shrink and become thick and then become slightly hard, the thick blocking effect of the wool ends of the filter cloth after shrinkage is ideal, and long-time comparison tests show that the filter cloth has the same blocking effect as the wool surface of the base cloth with the carding process in the prior art, so that floating or suspended SS suspended solids in sewage are captured by flowing through the wool surface through the filter cloth; when the rough surface blocking effect reaches a certain value, the water permeating effect is poor, the water level rises, the reverse suction device is opened at the moment, sludge on the rough surface is sucked off and floats or floats, the water passing effect is improved again, the water is circulated repeatedly, the thickness of the root part of the filter cloth felt is beneficial to sucking box sludge and accelerating drainage, the reverse suction box can suck the sludge and remove the dirt to achieve a better effect, and the final finished product is 550-600 g per square; the filter cloth with the hair length of 8-15 mm is determined according to the requirements of customers and the requirement of reducing SS suspended solids;

in the fourth step, the drying temperature is 120-180 ℃; the physical properties of the plied S + Z twisted wool yarns can shrink at 120-180 ℃; in the process of drying the coarse cotton cloth at the high temperature of 120-180 ℃, the coarse cotton yarn on the coarse cotton cloth is adhered to the back net and is strengthened under the warp-knitted binding, the cloth surface of the back net becomes slightly hard, and the coarse cotton cloth is changed into 10-16 mm in length due to the change of the drying temperature so as to form a thick barrier layer;

installing a plush filter cloth with the length of 8-12 mm manufactured by a non-carding process on a rotary disc filter which ensures the final effluent of sewage treatment, and installing a traditional filter cloth which is manufactured by warping, warp knitting, planing, sizing, carding, shearing or repeated multiple working procedures in the prior art on the rotary disc filter which is used for the final effluent of sewage treatment in a contrast test;

dividing inlet water SS suspended solid less than 30mg/L into equal parts of sewage, and enabling the divided part of sewage to pass through two sewage treatment systems of the filter cloth and the traditional filter cloth, wherein SS suspended solid of outlet water is reduced to be below 10mg/L, and sewage treated by two sewage treatment devices reaches a first-level A outlet water standard;

the working principle of the invention is as follows:

in the invention, the filter cloth is prepared by warping, warp knitting, scutching, drying and shearing in sequence; the manufacturing method of the filter cloth does not comprise a carding process, improves the manufacturing speed and the yield of the filter cloth, and reduces the manufacturing cost;

the folded S + Z twisted wool yarns of the filter cloth are easy to shrink and become thick and then become slightly hard, the thick blocking effect of the wool ends of the filter cloth after shrinkage is ideal, and long-time comparison tests show that the filter cloth has the same blocking effect as the wool surface of the base cloth with the carding process in the prior art, so that floating or suspended SS suspended solids in sewage are captured by flowing through the wool surface through the filter cloth; when the rough surface blocking effect reaches a certain value, the water permeating effect is poor, the water level rises, the reverse suction device is opened at the moment, sludge on the rough surface is sucked off and floats or floats, the water passing effect is improved again, the water is circulated repeatedly, the thickness of the root part of the filter cloth felt is beneficial to sucking box sludge and accelerating drainage, the reverse suction box can suck the sludge and remove the dirt to achieve a better effect, and the final finished product is 550-600 g per square; the filter cloth with the hair length of 8-15 mm is determined according to the requirements of customers and the requirement of reducing SS suspended solids;

the filter cloth changes the wool yarn density through different penetrating modes, so that the application environment of the filter cloth is adapted;

the physical properties of the plied S + Z twisted wool yarns can shrink at 120-180 ℃; in the process of drying the coarse cotton cloth at the high temperature of 120-180 ℃, the coarse cotton yarn on the coarse cotton cloth is adhered to the back net and is strengthened under the warp-knitted binding, the cloth surface of the back net becomes slightly hard, and the coarse cotton cloth is changed into 10-16 mm in length due to the change of the drying temperature so as to form a thick barrier layer;

the filter cloth has better mud suction and water communication effects, so that the starting frequency of a backwashing device for sewage treatment can be reduced, and the service lives of equipment and the filter cloth are prolonged; the manufacturing method of the filter cloth of the carding process in the conventional long wool flannelette production process is omitted, the benefits of production enterprises are increased, and the production cost is reduced;

the wool length of the filter cloth manufactured by the method without the carding process is remained to be 13-15 mm, the wool yarn is woven by a two-in-one weaving method, so that the wool surface layer becomes denser to reduce the flow rate, the Suspended Solids (SS) of the inlet water is below 10mg/L, and the outlet water is reduced to be below 5mg/L, thereby reaching the national four-class water standard; the preparation method of the filter cloth without the carding process is a high-flux plush filter cloth with heavy net nodes, can improve the water outlet efficiency which reaches 12m³/m²H, the service life of the filter cloth can reach 24 months.

The invention provides novel high-flux plush filter cloth for sewage treatment in a non-carding process, which has the characteristics of improving the manufacturing speed and yield, reducing the manufacturing cost, facilitating drainage and sludge suction, and prolonging the service life of sewage treatment equipment and filter cloth. The invention has the beneficial effects that: the filter cloth is prepared by warping, warp knitting, planning, drying and shearing in sequence; the manufacturing method of the filter cloth does not comprise a carding process, the preparation process of the filter cloth adopts the characteristic of heavy mesh wire of a non-carding process and has a heavy mesh node principle, and the roots of wool yarns are vertically thin and thick without being separated by the carding process, so that drainage and mud suction are facilitated; the manufacturing method of the filter cloth improves the manufacturing speed and the yield of the filter cloth and reduces the manufacturing cost;

the folded S + Z twisted wool yarns of the filter cloth are easy to shrink and become thick and then become slightly hard, the thick blocking effect of the wool ends of the filter cloth after shrinkage is ideal, and long-time comparison tests show that the filter cloth has the same blocking effect as the wool surface of the base cloth with the carding process in the prior art, so that floating or suspended SS suspended solids in sewage are captured by flowing through the wool surface through the filter cloth; when the rough surface blocking effect reaches a certain value, the water permeating effect is poor, the water level rises, the reverse suction device is opened at the moment, sludge on the rough surface is sucked off and floats or floats, the water passing effect is improved again, the water is circulated repeatedly, the thickness of the root part of the filter cloth felt is beneficial to sucking box sludge and accelerating drainage, the reverse suction box can suck the sludge and remove the dirt to achieve a better effect, and the final finished product is 550-600 g per square; the filter cloth with the hair length of 8-15 mm is determined according to the requirements of customers and the requirement of reducing SS suspended solids;

the filter cloth changes the wool yarn density through different penetrating modes, so that the application environment of the filter cloth is adapted;

the physical properties of the plied S + Z twisted wool yarns can shrink at 120-180 ℃; in the process of drying the coarse cotton cloth at the high temperature of 120-180 ℃, the coarse cotton yarn on the coarse cotton cloth is adhered to the back net and is strengthened under the warp-knitted binding, the cloth surface of the back net becomes slightly hard, and the coarse cotton cloth is changed into 10-16 mm in length due to the change of the drying temperature so as to form a thick barrier layer;

the filter cloth has better mud suction and water communication effects, so that the starting frequency of a backwashing device for sewage treatment can be reduced, and the service lives of equipment and the filter cloth are prolonged; the manufacturing method of the filter cloth of the carding process in the conventional long wool flannelette production process is omitted, the benefits of production enterprises are increased, and the production cost is reduced.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.