CN112892076B - Composite filter layer based on non-woven fabric and preparation process thereof - Google Patents
Composite filter layer based on non-woven fabric and preparation process thereof Download PDFInfo
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- CN112892076B CN112892076B CN202110059649.0A CN202110059649A CN112892076B CN 112892076 B CN112892076 B CN 112892076B CN 202110059649 A CN202110059649 A CN 202110059649A CN 112892076 B CN112892076 B CN 112892076B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2055—Carbonaceous material
- B01D39/2058—Carbonaceous material the material being particulate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2055—Carbonaceous material
- B01D39/2058—Carbonaceous material the material being particulate
- B01D39/2062—Bonded, e.g. activated carbon blocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
- B01D39/2072—Other inorganic materials, e.g. ceramics the material being particulate or granular
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
- B01D39/2072—Other inorganic materials, e.g. ceramics the material being particulate or granular
- B01D39/2079—Other inorganic materials, e.g. ceramics the material being particulate or granular otherwise bonded, e.g. by resins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0618—Non-woven
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0622—Melt-blown
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0645—Arrangement of the particles in the filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
- B01D2239/0686—More than one layer present in the filtering material by spot-gluing
Abstract
The invention discloses a composite filter layer based on non-woven fabrics and a preparation process thereof, belonging to the technical field of non-woven fabrics, a plurality of embedding cushion layers are symmetrically and obliquely distributed between an outer filter cloth and an inner filter cloth which are distributed inside and outside, the left and right ends of the embedding cushion layers are all connected with the outer filter cloth and the inner filter cloth in an embedding way through connecting rods, the connecting rods play a role in positioning the strength of the outer filter cloth and the inner filter cloth, the space formed between the outer filter cloth and the inner filter cloth is divided into a plurality of embedding cavities for filling a filter filler layer by the embedding cushion layers, the outer filter cloth, the inner filter cloth and the plurality of embedding cushion layers distributed inside play a role in fixed-point embedding of a plurality of spaces for the filter filler layer, the filter filler layer inside plays a role in fixed-point shaping for the outer filter cloth and the inner filter cloth, and an adhesive layer is not needed to be adopted to connect the filter filler layer, the outer filter cloth and the inner filter cloth, namely the whole mechanical strength of the composite filter layer of the non-woven fabrics is not influenced, the filtration resistance of the non-woven fabrics and the activated carbon can not be increased.
Description
Technical Field
The invention relates to the technical field of non-woven fabrics, in particular to a non-woven fabric based composite filter layer and a preparation process thereof.
Background
Since the 50 s of the 19 th century, the rapid development of the nonwoven industry has provided a new direction for air filtration materials, and has also pulled the consumption of various sanitary absorbent products, medical and hygienic products, and labor and physical supplies. Therefore, the China non-woven fabric industry has great growth potential in the future. The woven fabric is a non-woven fabric which is formed by directly utilizing high polymer slices, short fibers or filaments to form a net through air flow or machinery, then carrying out spunlace, needling or hot rolling reinforcement, and finally carrying out after-treatment.
In the prior art, a non-woven fabric layer used for exhaust gas filtration is generally connected with an activated carbon layer through viscose glue, and a filter filler such as activated carbon is filled between an inner layer and an inner layer of the non-woven fabric layer. The non-woven fabric material has softness and lower mechanical strength, so that the non-woven fabric material is difficult to have a good wrapping effect on the activated carbon; and the viscose layer is used as a bonding surface between the activated carbon and the non-woven fabric, and the whole bonding surface is adopted, so that the filtration resistance of the non-woven fabric is increased, and the gaps of the activated carbon are blocked, so that the filtration capacity of the non-woven fabric and the adsorption capacity of the activated carbon are influenced, and the structure of the non-woven fabric is further improved.
Therefore, the composite filter layer based on the non-woven fabric and the preparation process thereof are provided to effectively solve the problems in the prior art.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a composite filter layer based on non-woven fabrics and a preparation process thereof, a plurality of embedding cushion layers are symmetrically and obliquely distributed between an outer filter cloth and an inner filter cloth which are distributed inside and outside, the left end and the right end of each embedding cushion layer are connected with the outer filter cloth and the inner filter cloth in an embedding way through connecting rods, the connecting rods play a role in positioning the strength of the outer filter cloth and the inner filter cloth, the space formed between the outer filter cloth and the inner filter cloth is divided into a plurality of embedding cavities for filling a filter filler layer by the embedding cushion layers, the outer filter cloth, the inner filter cloth and the embedding cushion layers distributed inside play a role in multi-space fixed-point embedding for the filter filler layer, the inner filter filler layer plays a role in shaping the outer filter cloth and the inner filter cloth, and the filter filler layer is not required to be connected with the outer filter cloth and the inner filter cloth by an integral fixed-point adhesive layer, the overall mechanical strength of the composite filter layer of the non-woven fabric is not affected, and the filtration resistance of the non-woven fabric and the activated carbon is not increased.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
The utility model provides a compound filter layer based on non-woven fabrics, includes inside and outside inner filter cloth and outer filter cloth that distributes, outer filter cloth has a plurality of splice bars with crisscross distribution on the relative lateral wall of inner filter cloth, is connected with a plurality of embedding cushions between a plurality of splice bars of left and right side crisscross, and it is a plurality of that distribute from top to bottom the embedding cushion is a plurality of splice bar symmetric slope and distributes, and is a plurality of embedding chamber is separated into between embedding cushion will outer filter cloth and the inner filter cloth to the embedding intracavity portion all is filled has the filtration packing layer, and is a plurality of hot melt fixed point bags are located to the cover on the lateral wall of embedding cushion, and is a plurality of the inside packing of hot melt fixed point bag has the hot melt adhesive, and is a plurality of the upper and lower extreme of hot melt fixed point bag extends to the embedding intracavity that distributes from top to bottom respectively.
Further, outer filter cloth adopts the water thorn non-woven fabrics, interior filter cloth adopts the melt-blown non-woven fabrics, the embedding bed course adopts and glues the non-woven fabrics, the hole size clearance of outer filter cloth, embedding bed course and interior filter cloth is steadilyd decrease in proper order, and when filtering, waste gas flows through outer filter cloth, embedding bed course, interior filter cloth in proper order, realizes coarse filtration and ultrafine filtration, effectively improves the filter effect to waste gas.
Furthermore, fixed-point grooves for embedding and installing connecting rods are formed in the opposite side walls of the outer filter cloth and the inner filter cloth, adhesive layers are coated on the inner walls of the fixed-point grooves, and the outer ends of the connecting rods are exposed out of the fixed-point grooves.
It is further, it is a plurality of set up on the lateral wall of the outer tip of joint pole a pair of be used for two embedding bed course to inlay to establish and install gomphosis bonding chamber, fixedly connected with inlays with gomphosis bonding chamber on the both ends wall of embedding bed course and establishes the setting plate that inlays of matching, and both ends all are equipped with about the embedding bed course and inlay the setting plate, inlays the setting plate and inlays with gomphosis bonding chamber and establish and be connected for play the positioning action to the embedding bed course, effectively improved the connection steadiness of a plurality of embedding bed courses between outer filter cloth, interior filter cloth.
Furthermore, a filling cavity is formed in the joint rod, adhesive liquid is arranged in the filling cavity, the embedding bonding cavity is provided with a bonding hole matched with the filling cavity, the outer side wall of the embedding bonding cavity is provided with a bonding seepage layer coated outside the bonding hole, the embedding plate is bonded by the adhesive liquid, and the connection effect between the embedding cushion layer and the joint rod is further improved.
Furthermore, be equipped with a plurality of fixed point needles that correspond with the pole position of linking on the lateral wall of outer filter cloth and interior filter cloth, it is a plurality of the inner of fixed point needle runs through outer filter cloth, interior filter cloth respectively and extends to inside the pole that links up that corresponds rather than the position, and a plurality of fixed point needles are used for fixing a position outer filter cloth, interior filter cloth respectively with a plurality of poles of linking, further give certain mechanical fixed point dynamics of flexible non-woven fabrics.
Furthermore, a plurality of the fixed point needles are made of hollow alumina, and the inner ends of the fixed point needles are bonded with a bonding liquid phase.
Furthermore, an embedding point for embedding the hot-melting fixed-point bag is arranged on the embedding cushion layer, and the hot-melting fixed-point bag and the filtering filler layer are embedded in a fusion manner.
Further, hot melt fixed point bag adopts hot melt resin to make, filter the mixture of packing layer for filling in embedding intracavity active carbon powder and haydite, distribute on the embedding bed course and inlay and establish a plurality of hot melt fixed point bags, follow-up when carrying out the hot rolling to outer filter cloth to and filter the packing layer, a plurality of hot melt fixed point bag hot melt spills over the hot melt adhesive, the hot melt adhesive covers in the filtration packing layer around it, and the hot melt fixed point bag of hot melt acts as the adhesive with filtering the packing layer cooperation, wait to cool off the back, the hot melt adhesive that spills over forms the adhesive point between embedding bed course and filtration packing layer, effectively improved the steadiness of filtration packing layer in the embedding intracavity, be difficult for causing in filtering process and filter the packing layer to drop.
A preparation process of a composite filter layer based on non-woven fabric comprises the following steps:
s1, firstly, respectively embedding a plurality of joint rods on opposite side walls of the outer filter cloth and the inner filter cloth, wherein the joint rods arranged on the left and right are distributed in a vertically staggered manner, one ends of a plurality of embedding cushion layers are embedded on the joint rods of the outer filter cloth, and one ends of the embedding cushion layers are embedded on the joint rods of the inner filter cloth, so that the embedding cushion layers are symmetrically and obliquely distributed on the joint rods connected with the embedding cushion layers;
s2, filling the filtering filler layer in an embedding cavity formed by a plurality of connecting rods, and sealing and edge-wrapping the outer side edge of the outer filter cloth connected with the inner filter cloth by a technician by using an external sealing layer to form a primary composite filtering layer;
s3, go out the filter cloth, interior filter cloth and filter the compound filter layer complex that the packing layer formed and roll through the hot rolling and press and form time compound worry layer, at the hot rolling in-process, a plurality of hot melt fixed point bag hot melts of gomphosis on the embedding bed course spill over its inside hot melt adhesive, wait to cool off the back, the hot melt adhesive that spills over forms the adhesive point between embedding bed course and filter the packing layer, has effectively improved the steadiness of filtering the packing layer in the embedding intracavity, is difficult for causing in filtering process and filters the packing layer and drops.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the scheme is that a plurality of embedding cushion layers are symmetrically and obliquely distributed between the outer filter cloth and the inner filter cloth which are distributed inside and outside, the left end and the right end of each embedding cushion layer are connected with the outer filter cloth and the inner filter cloth through the connecting rods in an embedded mode, the connecting rods play a role in positioning the strength of the outer filter cloth and the inner filter cloth, the space formed between the outer filter cloth and the inner filter cloth is divided into a plurality of embedding cavities for filling the filter packing layer by the embedding cushion layers, the outer filter cloth, the inner filter cloth and the embedding cushion layers distributed inside play a role in embedding the filter packing layer at fixed points in multiple spaces, the inner filtering filler layer plays a role in fixed-point shaping of the outer filtering cloth and the inner filtering cloth, the filtering filler layer is not required to be connected with the outer filtering cloth and the inner filtering cloth by a whole adhesive layer, the overall mechanical strength of the composite filter layer of the non-woven fabric is not affected, and the filtration resistance of the non-woven fabric and the activated carbon is not increased.
(2) Outer filter cloth adopts water thorn non-woven fabrics, and interior filter cloth adopts the melt blown non-woven fabrics, and the embedding bed course adopts the spunbond non-woven fabrics, and the hole size clearance of outer filter cloth, embedding bed course and interior filter cloth steadilys decrease in proper order, and when filtering, waste gas flows through outer filter cloth, embedding bed course, interior filter cloth in proper order, realizes coarse filtration and ultrafine filtration, effectively improves the filter effect to waste gas.
(3) All be equipped with the fixed point recess that is used for the joint pole to inlay the installation on the relative lateral wall of outer filter cloth and interior filter cloth, it has the bond line to coat on the inner wall of a plurality of fixed point recesses, the outer tip of a plurality of joint poles exposes in the fixed point recess outside, it inlays to establish to be used for two embedding cushions to set up and installs gomphosis bonding chamber to offer a pair of on the lateral wall of a plurality of outer tip of joint poles, fixedly connected with inlays the chamber with gomphosis and sets up the setting board of inlaying that matches on the both ends wall of embedding cushion, both ends all are equipped with about the embedding cushion and inlay the setting board, it inlays the setting board and establishes with gomphosis bonding chamber and is connected, be used for playing the positioning action to the embedding cushion, a plurality of embedding cushions are at outer filter cloth, the connection steadiness between the interior filter cloth has effectively been improved.
(4) The packing chamber has been seted up to the inside of joint pole, is equipped with the adhesive liquid in the packing chamber, all set up on a pair of gomphosis bonding chamber with fill chamber assorted bonding hole, be equipped with the cladding on the lateral wall in gomphosis bonding chamber in the bonding infiltration layer in the bonding hole outside, utilize the adhesive liquid to bond to inlaying the settlement plate, further improved the connection effect between embedding bed course and the joint pole.
(5) The outer side walls of the outer filter cloth and the inner filter cloth are provided with a plurality of fixed point needles corresponding to the positions of the connecting rods, the inner ends of the fixed point needles penetrate through the outer filter cloth and the inner filter cloth respectively and extend into the connecting rods corresponding to the positions of the outer filter cloth and the inner filter cloth, the fixed point needles are made of hollow alumina, the inner ends of the fixed point needles are bonded with a bonding liquid, the fixed point needles are used for positioning the outer filter cloth and the inner filter cloth with the connecting rods respectively, and further certain mechanical fixed point force is given to the flexible non-woven fabric.
(6) Offer on the embedding bed course and be used for hot melt fixed point bag to inlay the gomphosis point of establishing, and hot melt fixed point bag inlays with filtering the packing layer fusion and establishes, hot melt fixed point bag adopts hot melt resin to make, filter the packing layer for filling in the mixture of embedding intracavity active carbon powder and haydite, it establishes a plurality of hot melt fixed point bags to distribute on the embedding bed course, in follow-up to outer filter cloth, and when filtering the packing layer and carrying out the hot rolling, a plurality of hot melt fixed point bag hot melts overflow the hot melt adhesive, the hot melt adhesive covers in its filtration packing layer on every side, and the hot melt fixed point bag of hot melt and the cooperation of filtering the packing layer act as the adhesive, wait to cool off the back, the hot melt adhesive that overflows forms the adhesive point between embedding bed course and filtering the packing layer, the steadiness of filtering the packing layer in the embedding intracavity has effectively been improved, be difficult for causing filtering the packing layer to drop in filtering process.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of the present invention prior to filling the layer of filter packing;
FIG. 3 is an exploded view of the present invention prior to filling the layer of filter packing;
FIG. 4 is a schematic side view of the present invention prior to filling the layer of filter packing;
FIG. 5 is a schematic view of the structure at A in FIG. 4;
fig. 6 is a perspective view of the joint rod of the present invention.
The reference numbers in the figures illustrate:
the hot melt adhesive comprises 1 outer filter cloth, 2 inner filter cloth, 3 embedding cushion layers, 4 connecting rods, 401 embedded bonding cavities, 5 filtering filler layers, 6 fixed point needles, 7 fixed point grooves, 8 adhesives, 9 embedded setting plates, 10 hot melt fixed point bags and 11 hot melt adhesives.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-2, a composite filter layer based on non-woven fabric comprises an inner filter fabric 2 and an outer filter fabric 1 which are distributed inside and outside, a plurality of connecting rods 4 are distributed on the opposite side walls of the outer filter fabric 1 and the inner filter fabric 2 in a staggered manner, a plurality of embedding cushions 3 are connected between the connecting rods 4 which are staggered from left to right, the plurality of embedding cushions 3 which are distributed from top to bottom are symmetrically and obliquely distributed by the connecting rods 4, the plurality of embedding cushions 3 divide the space between the outer filter fabric 1 and the inner filter fabric 2 into a plurality of embedding cavities, the plurality of embedding cavities are filled with a filter filler layer 5, the outer filter fabric 1 is made of spunlace non-woven fabric, the inner filter fabric 2 is made of melt-blown non-woven fabric, the embedding cushions 3 are made of spun-bonded non-woven fabric, the inner hole size gaps of the outer filter fabric 1, the embedding cushions 3 and the inner filter fabric 2 are gradually decreased, and during filtering, waste gas flows through the outer filter fabric 1, the embedding cushions 3 and the inner filter fabric 2 in turn, realize coarse filtration and ultrafine filtration, effectively improve the filter effect to waste gas, outer filter cloth 1 with interior filter cloth 2 and distribute in a plurality of embedding bed course 3 of inside and play many spaces embedding effect to filtering the packing layer 5, and inside filtering the packing layer 5 cooperation a plurality of joint poles 4 and embedding bed course 3 then play the moulding effect of fixed point to outer filter cloth 1 and interior filter cloth 2.
Referring to fig. 2-6, the opposite side walls of the outer filter cloth 1 and the inner filter cloth 2 are respectively provided with a fixed point groove 7 for embedding and installing the linking rod 4, the inner walls of the fixed point grooves 7 are coated with an adhesive layer, the outer end portions of the linking rods 4 are exposed outside the fixed point grooves 7, so as to realize the adhesive connection between the linking rods 4 and the outer filter cloth 1 and the inner filter cloth 2, the side walls of the outer end portions of the linking rods 4 are provided with a pair of embedding bonding cavities 401 for embedding and installing two embedding cushion layers 3, the two end walls of the embedding cushion layers 3 are fixedly connected with embedding plates 9 embedded and matched with the embedding bonding cavities 401, the left and right ends of the embedding cushion layers 3 are respectively provided with embedding plates 9, the embedding plates 9 are embedded and connected with the embedding bonding cavities 401 for positioning the embedding cushion layers 3, compared with the method for directly connecting the flexible embedding cushion layers 3 with the linking rods 4, the embedded setting plate 9 with certain mechanical strength is utilized to play a role of mechanical positioning at the joint, and the connection stability of the plurality of embedding cushion layers 3 between the outer filter cloth 1 and the inner filter cloth 2 is effectively improved.
Furthermore, a filling cavity is arranged inside the joint rod 4, a binding liquid 8 is arranged in the filling cavity, a pair of embedded binding cavities 401 are respectively provided with a binding hole matched with the filling cavity, the outer side wall of each embedded binding cavity 401 is provided with a binding seeping material layer coated outside the binding hole, the embedded setting plate 9 is bound by the binding liquid 8, the connection effect between the embedded cushion layer 3 and the joint rod 4 is further improved, the outer side walls of the outer filter cloth 1 and the inner filter cloth 2 are provided with a plurality of fixed point needles 6 corresponding to the positions of the joint rod 4, the inner ends of the fixed point needles 6 respectively penetrate through the outer filter cloth 1 and the inner filter cloth 2 and extend to the inside of the joint rod 4 corresponding to the positions, the fixed point needles 6 are made of hollow alumina, the inner ends of the fixed point needles 6 are bound with the binding liquid 8, the fixed point needles 6 are used for respectively locating the outer filter cloth 1 and the inner filter cloth 2 with the joint rods 4, further endowing the flexible non-woven fabric with certain mechanical fixed-point force.
Referring to fig. 1-4, a plurality of hot-melt fixed-point capsules 10 are sleeved on the side walls of a plurality of embedding cushions 3 in a penetrating manner, hot melt glue 11 is filled in the hot-melt fixed-point capsules 10, the upper and lower ends of the hot-melt fixed-point capsules 10 extend into embedding cavities distributed up and down, embedding points for embedding the hot-melt fixed-point capsules 10 are arranged on the embedding cushions 3, the hot-melt fixed-point capsules 10 and the filtering packing layer 5 are embedded in a fusing manner, the hot-melt fixed-point capsules 10 are made of hot melt resin, the filtering packing layer 5 is a mixture of active carbon powder and ceramsite filled in the embedding cavities, the hot-melt fixed-point capsules 10 are distributed and embedded on the embedding cushions 3, when the external filter cloth 1 and the filtering packing layer 5 are hot-rolled, the hot melt glue 11 overflows the hot melt glue, the hot melt glue 11 covers the filtering packing layer 5 around the hot melt fixed-point capsules 10 and the filtering packing layer 5 are matched to serve as an adhesive, treat the back that cools off, the hot melt adhesive 11 that spills over forms the adhesive point between embedding bed course 3 and filtration packing layer 5, the crisscross embedding bed course 3 that distributes of cooperation, the steadiness of filtration packing layer 5 in the embedding intracavity has effectively been improved, be difficult for causing in filtering process and filter packing layer 5 to drop, adopt whole viscose layer to realize being connected between non-woven fabrics and the active carbon relatively as among the prior art, this preparation method is difficult for increasing the filtration resistance of non-woven fabrics and active carbon, and simultaneously, after the cooling design, pack in the inside adhesive liquid 8 of linking pole 4 and solidify, realize linking pole 4 and embedding bed course 3 and linking pole 4 and fixed point needle 6 between being connected, the whole mechanical strength of this composite filter layer has been strengthened.
A preparation process of a composite filter layer based on non-woven fabric comprises the following steps:
s1, firstly, respectively embedding a plurality of connecting rods 4 on opposite side walls of the outer filter cloth 1 and the inner filter cloth 2, wherein the connecting rods 4 arranged on the left and right are distributed in a vertically staggered manner, one ends of a plurality of embedding cushion layers 3 are embedded on the connecting rods 4 of the outer filter cloth 1, and one ends of the embedding cushion layers 3 are embedded on the connecting rods 4 of the inner filter cloth 2, so that the embedding cushion layers 3 are symmetrically and obliquely distributed on the connecting rods 4 connected with the embedding cushion layers;
s2, filling the filtering filler layer 5 in an embedding cavity formed by a plurality of connecting rods 4, and sealing and edge-wrapping the outer side edges of the outer filtering cloth 1 connected with the inner filtering cloth 2 by a technician by utilizing an external sealing layer to form a primary composite filtering layer;
s3, outer filter cloth 1, the compound filter layer that interior filter cloth 2 and filtration packing layer 5 formed is compound to form time compound worry layer through the hot rolling, in the hot rolling in-process, a plurality of hot melt fixed point bags 10 hot melt of gomphosis on embedding bed course 3 overflow its inside hot melt adhesive 11, wait to cool off the back, the hot melt adhesive 11 that overflows forms the adhesive point between embedding bed course 3 and filtration packing layer 5, the steadiness of filtration packing layer 5 in the embedding cavity has effectively been improved, be difficult for causing in filtering process to filter packing layer 5 and drop.
The invention symmetrically and obliquely distributes a plurality of embedding cushion layers 3 between an outer filter cloth 1 and an inner filter cloth 2 which are distributed inside and outside, the left end and the right end of each embedding cushion layer 3 are respectively connected with the outer filter cloth 1 and the inner filter cloth 2 through connecting rods 4, the plurality of connecting rods 4 respectively play a role in positioning the strength of the outer filter cloth 1 and the inner filter cloth 2, the plurality of embedding cushion layers 3 divide a space formed between the outer filter cloth 1 and the inner filter cloth 2 into a plurality of embedding cavities for filling a filter filler layer 5, the outer filter cloth 1, the inner filter cloth 2 and the plurality of embedding cushion layers 3 distributed inside play a role in embedding the space of the filter filler layer 5, the filter filler layer 5 inside plays a role in fixed-point shaping of the outer filter cloth 1 and the inner filter cloth 2, the whole mechanical strength of the composite filter layer of the non-woven fabric is enhanced without adopting the whole adhesive layer to connect the filter filler layer 5, the outer filter cloth 1 and the inner filter cloth 2, but also can not increase the filtration resistance of the non-woven fabrics and the activated carbon.
The components used in the present invention are all standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experiments.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (7)
1. The utility model provides a compound filter layer based on non-woven fabrics, includes inside and outside inner filter cloth (2) and outer filter cloth (1) that distribute, its characterized in that: a plurality of connecting rods (4) are distributed on the opposite side walls of the outer filter cloth (1) and the inner filter cloth (2) in a staggered manner, a plurality of embedding cushions (3) are connected between the plurality of connecting rods (4) which are staggered from left to right, the plurality of embedding cushions (3) which are distributed up and down are symmetrically distributed in an inclined manner, the plurality of embedding cushions (3) divide the space between the outer filter cloth (1) and the inner filter cloth (2) into a plurality of embedding cavities, the inside of each embedding cavity is filled with a filter packing layer (5), the side walls of the plurality of embedding cushions (3) are sleeved with the plurality of hot-melting fixed-point capsules (10) in a penetrating manner, the inside of the plurality of hot-melting fixed-point capsules (10) is filled with hot melt adhesive (11), and the upper ends and the lower ends of the plurality of hot-melting fixed-point capsules (10) extend into the embedding cavities which are distributed up and down respectively;
fixed point grooves (7) for embedding and mounting connecting rods (4) are formed in opposite side walls of the outer filter cloth (1) and the inner filter cloth (2), an adhesive layer is coated on the inner walls of the fixed point grooves (7), and the outer end parts of the connecting rods (4) are exposed outside the fixed point grooves (7);
a pair of embedding bonding cavities (401) for embedding and mounting two embedding cushion layers (3) are formed in the side walls of the outer end portions of the connecting rods (4), and embedding setting plates (9) matched with the embedding bonding cavities (401) in an embedding mode are fixedly connected to the two end walls of the embedding cushion layers (3);
the embedding cushion layer (3) is provided with embedding points for embedding the hot-melting fixed-point bags (10), and the hot-melting fixed-point bags (10) and the filtering filler layer (5) are embedded in a fusion manner.
2. A nonwoven-based composite filter layer as claimed in claim 1, characterized in that: outer filter cloth (1) adopts the water thorn non-woven fabrics, interior filter cloth (2) adopt and melt blown the non-woven fabrics, embedding bed course (3) adopt the spunbonded nonwoven, the hole size clearance of outer filter cloth (1), embedding bed course (3) and interior filter cloth (2) diminishes progressively in proper order.
3. A nonwoven-based composite filter layer as claimed in claim 1, characterized in that: the embedded type adhesive bonding device is characterized in that a filling cavity is formed in the connecting rod (4), adhesive liquid (8) is arranged in the filling cavity, a pair of embedded type adhesive cavities (401) are provided with adhesive holes matched with the filling cavity, and an adhesive seepage layer coated outside the adhesive holes is arranged on the outer side wall of each embedded type adhesive cavity (401).
4. A nonwoven-based composite filter layer as claimed in claim 3, characterized in that: the outer side walls of the outer filter cloth (1) and the inner filter cloth (2) are provided with a plurality of fixed point needles (6) corresponding to the positions of the connecting rods (4), and the inner ends of the fixed point needles (6) penetrate through the outer filter cloth (1) and the inner filter cloth (2) respectively and extend into the connecting rods (4) corresponding to the positions of the inner ends.
5. A nonwoven-based composite filter layer according to claim 4, characterized in that: the plurality of fixed point needles (6) are all made of hollow alumina, and the inner ends of the fixed point needles (6) are bonded with the bonding liquid (8).
6. A nonwoven-based composite filter layer as claimed in claim 1, characterized in that: the hot-melt fixed-point capsule (10) is made of hot-melt resin, and the filtering filler layer (5) is a mixture of activated carbon powder and ceramsite filled in the embedding cavity.
7. A method of manufacturing a composite filter layer on the basis of a nonwoven fabric according to any of claims 1 to 6, characterized in that: the method comprises the following steps:
s1, firstly, respectively embedding a plurality of connecting rods (4) on opposite side walls of the outer filter cloth (1) and the inner filter cloth (2), distributing the connecting rods (4) arranged on the left and right in a vertically staggered manner, embedding one ends of a plurality of embedding cushion layers (3) on the connecting rods (4) of the outer filter cloth (1), and embedding one ends of the embedding cushion layers (3) on the connecting rods (4) of the inner filter cloth (2), so that the embedding cushion layers (3) are symmetrically and obliquely distributed with the connecting rods (4) connected with the embedding cushion layers;
s2, filling the filtering filler layer (5) in an embedding cavity formed by a plurality of connecting rods (4), and carrying out sealing and edge wrapping on the outer side edge of the outer filtering cloth (1) connected with the inner filtering cloth (2) by utilizing an external sealing layer to form a primary composite filtering layer;
s3, outer filter cloth (1), interior filter cloth (2) and filter the compound filter layer complex that packing layer (5) formed form time compound filter layer through the hot rolling, in the hot rolling in-process, a plurality of hot melt fixed point bags (10) hot melt of gomphosis on embedding bed course (3) spill over its inside hot melt adhesive (11), wait to cool off the back, the hot melt adhesive (11) that spill over form the adhesive point between embedding bed course (3) and filter packing layer (5), the steadiness of filter packing layer (5) in the embedding intracavity has effectively been improved, be difficult for causing in filtering process and filter packing layer (5) and drop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110059649.0A CN112892076B (en) | 2021-01-18 | 2021-01-18 | Composite filter layer based on non-woven fabric and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110059649.0A CN112892076B (en) | 2021-01-18 | 2021-01-18 | Composite filter layer based on non-woven fabric and preparation process thereof |
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| CN112892076B true CN112892076B (en) | 2022-09-20 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2131892T3 (en) * | 1996-07-01 | 1999-08-01 | Binzer Papierfab J | PROCEDURE FOR THE ELABORATION OF FIBER FILTERS. |
| DE202006018863U1 (en) * | 2006-12-12 | 2008-04-17 | Mann+Hummel Gmbh | Filter element with activated carbon coating |
| KR101966761B1 (en) * | 2012-02-24 | 2019-04-08 | 도레이 카부시키가이샤 | Separation membrane element and separation membrane module |
| DE202016105559U1 (en) * | 2016-05-10 | 2016-12-09 | Pure Flow Filtersysteme GmbH | Filter material and filtration arrangement |
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