CN215517889U - Air suction structure of web former - Google Patents
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- CN215517889U CN215517889U CN202121744660.2U CN202121744660U CN215517889U CN 215517889 U CN215517889 U CN 215517889U CN 202121744660 U CN202121744660 U CN 202121744660U CN 215517889 U CN215517889 U CN 215517889U
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Abstract
The invention relates to a suction air structure of a web former, wherein a first suction air cavity and a second suction air cavity which are independent from each other are arranged below a web curtain and on two sides of a lower pressure roller, and the first suction air cavity and the second suction air cavity are arranged on the left side and the right side of the lower pressure roller and are extension sections attached to the close positions of an upper pressure roller and the lower pressure roller. The advantages are that: the light fluffy fiber is ensured to be flatly paved on the net curtain or the conveyer belt which runs at high speed, and is synchronously and stably transported along with the high-speed net curtain, and the phenomenon that the fiber cloth is partially or extensively separated from the high-speed net curtain due to external factors is avoided.
Description
Technical Field
The invention relates to an air suction structure of a web former.
Background
In the domestic non-woven fabric industry, the fiber length is divided into filament and short fiber, the fiber is paved on a net curtain to form a net, and a stable cloth cover is formed by different consolidation processes of hot rolling, hot air, spunlace, needle punching and the like. With the trend development of large width and high vehicle speed, the following two problems affecting the operation stability and the product quality of the equipment are induced: firstly, the width of the equipment is increased, the difficulty in controlling the uniformity of airflow distribution along the width is increased, and the probability of visible stripes on the cloth surface is increased sharply; secondly, the speed of the net curtain is increased, so that the airflow homodromous speed around the net curtain is increased, the wind speed around the net curtain generated by friction is increased, the interference on fluffy fibers attached to the net curtain is increased, and the probability of net turning (namely the fibers and the net curtain are peeled off in the transmission process) is increased.
The non-woven fabric is produced through the process of filament fiber, and features that great amount of fiber filament of 20 micron diameter is cross laid on the net curtain, the net curtain and the wind cavity below the net curtain are below the fiber falling part, and the wind cavity sucks the airflow accompanying the fiber falling part and induces the fiber to be laid stably on the net curtain. And the fibers leaving the air cavity on the lower side of the net curtain need to continuously advance for a certain distance and then are respectively arranged on a group of rollers on two sides of the net curtain for rolling and shaping.
After fibers on the existing net curtain are separated from an air cavity area, the phenomena of net turning and the like occur due to outer ring airflow interference before the fibers enter a rolling and shaping roller, and meanwhile, the phenomena of net curtain separation and even roller winding of the fiber cloth surface from the net curtain due to static electricity or roller surface roughness and the like are caused after the fiber cloth surface is rolled by the shaping roller.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a suction wind structure of a web former.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a lapper suction wind structure, including first suction wind chamber and second suction wind chamber, the net curtain top is equipped with the diffuser, the lower extreme in the motion direction low reaches of net curtain is equipped with down the compression roller, the ascending upper end in the motion direction of net curtain is equipped with the compression roller, it is circular roller structure with lower compression roller to go up the compression roller, go up the compression roller and cooperate with lower compression roller, and rotation direction is opposite, it is equipped with mutually independent first suction wind chamber and second suction wind chamber to be located net curtain below and lower compression roller both sides, first suction wind chamber and second suction wind chamber are located the extension section of lower compression roller left and right sides department for laminating upper compression roller and lower compression roller near department.
Further, the second suction wind chamber is in the low reaches in first suction wind chamber, and the second suction wind chamber parcel is the compression roller left and right sides down, and the second suction wind chamber is divided into the first chamber and the second chamber of dividing of upper end laminating web curtain by the compression roller down, and the first suction wind chamber of laminating of first chamber one side, first chamber and second divide the upper end in chamber to be equipped with the extension section of the nearly department of compression roller and compression roller subsides on laminating respectively.
Furthermore, the first air cavity main air duct is connected with a first suction air cavity, the first air cavity main air duct is connected with a fan through an air pipe, airflow above the net curtain flows through the first suction air cavity and then is collected in the first air cavity main air duct, and enters the fan through the air pipe, and an air equalizing device is further arranged in the first suction air cavity; the second air cavity main air duct is connected with the second suction air cavity, the second air cavity main air duct is connected with the fan through an air pipe, and air flow above the net curtain flows through the second suction air cavity and then is collected in the second air cavity main air duct and enters the fan through the air pipe.
Furthermore, the flow guide structures are distributed in the first suction air cavity and the first suction air cavity main air duct and the second suction air cavity main air duct.
Further, the water conservancy diversion structure is for dividing the aerofoil, divides the aerofoil to be the arc, divides the aerofoil both ends to continue straight board, divides the aerofoil air inlet end to extend to the air-supply line, divides the aerofoil air-out end to extend to the up end that corresponds first suction air chamber or second suction air chamber, and the air inlet end height that is close to the branch aerofoil of tuber pipe reduces to the air inlet end of the branch aerofoil of keeping away from the tuber pipe gradually.
Furthermore, the flow guide structure is an air distribution plate, the air distribution plate is arc-shaped, the air inlet ends of the air distribution plate are arranged in a staggered mode, and the air inlet end of the air distribution plate close to the air pipe is gradually lowered towards the air inlet end of the air distribution plate far away from the air pipe and equally divides the air outlet height of the air pipe.
Furthermore, air pipes are arranged on two sides of the main air channel of the first suction air cavity and the main air channel of the second suction air cavity, flow guide structures are arranged in the main air channel of the first suction air cavity and the main air channel of the second suction air cavity, the flow guide structures are air dividing plates, and the centers of the main air channels of the first suction air cavity and the second suction air cavity are divided into a secondary first suction air cavity main air channel and a secondary second suction air cavity main air channel which are respectively provided with one air pipe by the air dividing plates far away from the air pipes.
Further, the second suction plenum is immediately adjacent to the first suction plenum, and both share a boundary barrier.
The invention has the beneficial effects that: the main function of the equipment line for, but not limited to, the production of nonwoven materials is to ensure that the lightweight fluffy fibers are laid flat on a high-speed running web or conveyor belt and are transported synchronously and stably with the high-speed web without the phenomenon that the fiber cloth is partially or extensively separated from the high-speed web due to external factors.
This patent a lapper suction wind structure has adopted two mutually independent first suction wind chamber and second suction wind chamber of next-door neighbour, has avoided first suction wind chamber and second suction wind chamber mutual interference, and the suction capacity in first suction wind chamber is maintained to the at utmost.
The first suction air cavity and the second suction air cavity share the boundary locally at the position close to the net curtain, or the distance between the two suction air cavities at the boundary near the net curtain is less than 40mm, so that the fiber cloth cover enters the second suction air cavity immediately after being separated from the first suction air cavity along with the advance of the net curtain, and the problem of net turning caused by the sudden disappearance of the pressure difference between the upper part and the lower part of the fiber cloth cover is avoided.
Along the advancing direction of the net curtain, the second suction air cavity is positioned at the downstream of the first suction air cavity, the second suction air cavity completely covers the net curtain before and after the binding of the upper/lower pressing roller, the fact that fibers enter the vicinity of the binding of the upper/lower pressing roller and are also firmly adsorbed on the net curtain is ensured, meanwhile, the fibers are adsorbed on the net curtain immediately after the binding is out, and the problems of net turning and roller winding are avoided at the earliest and most effective stage.
The first suction air cavity and the first suction air cavity main air duct, and the second suction air cavity main air duct adopt an arc-shaped and straight plate combined air dividing scheme, so that the uniformity of airflow penetrating through the net curtain in the width direction is improved.
Drawings
Fig. 1 is a first schematic structural diagram of the present invention.
FIG. 2 is a second schematic structural diagram of the present invention.
Fig. 3 is a third schematic structural diagram of the present invention.
Fig. 4 is a first structural schematic diagram of a flow guide structure.
Fig. 5 is a structural schematic diagram of a flow guide structure.
Fig. 6 is a schematic structural diagram three of the flow guide structure.
Fig. 7 is a fourth schematic structural view of the flow guide structure.
FIG. 8 is a data comparison graph of the present patent for wind distribution uniformity comparison.
FIG. 9 is a schematic structural view of example 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 9 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
The width of the first suction air chamber 3 and the second suction air chamber 7 spans the width of the upper press roll 5 and the lower press roll 6.
The utility model provides a lapper suction wind structure, second suction wind chamber is in the low reaches in first suction wind chamber, and the roller left and right sides is divided into to the second suction wind chamber parcel down, and the first branch chamber 7-3 and the second that the second suction wind chamber is divided into the laminating net curtain of upper end by the compression roller down divide into the chamber 7-4, and the first suction wind chamber of laminating in first branch chamber one side, first branch chamber and second divide the upper end in chamber to be equipped with the extension section 9 that compression roller and lower compression roller pasted near respectively in a laminating.
The first sub-cavity is close to the first suction air cavity 3, the side plate 7-1 of the second suction air cavity is close to the first suction air cavity 3, and shares a side plate with the first suction air cavity 4 partially or completely, or the distance between the side plate and the first suction air cavity and the position close to the net curtain 2 is not more than 40 mm.
The side plate 7-2 of the second suction plenum is opposite to the side plate 7-1 of the second suction plenum and together forms the second suction plenum 7.
A net-forming machine air suction structure is characterized in that the upper end of a first air cavity main air duct 4 is connected with a first air suction cavity 3 along the width direction, the lower end of the first air cavity main air duct 4 is connected with a fan through an air pipe, airflow above a net curtain flows through the first air suction cavity and then is collected in the first air cavity main air duct, and enters the fan through the air pipe, and an air equalizing device is further arranged in the first air suction cavity; the upper end of a second air cavity main air channel 8 is connected with a second suction air cavity 7 along the width direction, the lower end of the second air cavity main air channel is connected with a fan through an air pipe, and air flow above the net curtain flows through the second suction air cavity and then is collected in the second air cavity main air channel and enters the fan through the air pipe.
A second air cavity main air channel side portion is connected with a second suction air cavity, the lower end of a second air cavity main air channel is connected with a fan through an air pipe, and air flow above a net curtain flows through the second suction air cavity and then is collected in the second air cavity main air channel and enters the fan through the air pipe.
The first air cavity main air duct corresponds to a first air pipe entering a first fan;
the second air cavity main air duct is corresponding to a second air duct entering the second fan 10.
A flow guide structure is distributed in a first suction air cavity and a first suction air cavity main air duct and a second suction air cavity main air duct.
The width of the flow guide structure is consistent with the width of the first suction air cavity 3 and the second suction air cavity 7.
The penetrating airflow between the first suction air cavity 3 or the second suction air cavity 7 and the net curtain 2 is promoted to be uniformly distributed along the width direction.
A suction structure of a web former is characterized in that an air equalizing device 3-1 is a porous plate structure which is horizontally arranged and has an opening rate of 10% -60%.
An air suction structure of a web former is characterized in that an air equalizing device is a vertically arranged stud structure.
A suction wind structure of web former, light fine denier fiber (diameter is about 20 μm or even lower) passes through the diffuser 1 under the action of high speed air flow drawing and wrapping, and falls and lays on the web curtain 2. Since the net curtain 2 is a porous air-permeable medium, the fibers are intercepted at the upper side of the net curtain 2 and laid as a fluffy fiber cloth cover along with the advance of the net curtain 2, the airflow penetrates through the net curtain 2 and is sucked into the first suction air cavity 3, thereby promoting the fluffy fiber cloth cover to be firmly pressed on the net curtain 2 by atmospheric pressure. With the advance of the net curtain 2, the fluffy fiber cloth surface is driven to enter the front end of the upper compression roller 5, the negative pressure generated by the operation of the fan is transmitted to the lower side of the net curtain 2 through the first sub-cavity 7-3 at the upper side of the first sub-cavity, so that the airflow at the upper side of the fiber is still pressed into the negative pressure space at the lower side by the atmospheric pressure even in the narrow space. The above structure ensures that the fibers do not depart from the net curtain 2 during the movement from the lower opening of the diffuser 1 to the front of the upper and lower press rolls. Through the co-rolling action of the upper pressing roller 5 and the lower pressing roller 6, the fluffy fiber cloth cover is preliminarily rolled and separated from the contact line of the upper pressing roller 5 and the lower pressing roller 6 to enter the upper part of the second sub-cavity 7-4 along with the advance of the net curtain 2. As the small spaces on the left side and the right side of the lower pressing roll 6 are completely covered by the first sub-cavity 7-3 and the second sub-cavity 7-4, the pressure difference between the upper part and the lower part of the net curtain 2 is ensured to be formed in the low-speed small triangular areas on the two sides of the upper pressing roll 5. Because the pressure difference is attenuated violently, the smaller the space is, the better the adsorption effect under the specific pressure difference condition is, the specific pressure difference is attenuated and increased sharply after the space is increased, and the adsorption effect is attenuated sharply. Therefore, the probability that the fluffy fiber cloth surface is taken away from the surface of the net curtain 2 by the upper compression roller 5 is greatly reduced, and the risk of net turning and even roller winding is reduced.
In order to realize more uniform adsorption effect along the width direction, a set of flow guide structure combining an arc shape and a straight plate is designed and optimized. Compared with the prior device, the optimized suction uniformity is obviously improved, and the energy consumption of the fan is saved by 30%.
Compared with the wind distribution scheme of the patent CN 201864905U, the wind distribution uniformity (CV value 1.22) of the patent is obviously improved compared with the comparison patent (CV value 3.2).
In order to realize more uniform adsorption effect along the width direction, a set of flow guide structure combining an arc shape and a straight plate is designed and optimized. Compared with the prior device, the optimized suction uniformity is obviously improved, and the energy consumption of the fan is saved by 30%.
Compared with the wind distribution scheme of the patent CN 201864905U, the wind distribution uniformity (CV value 1.22) of the patent is obviously improved compared with the comparison patent (CV value 3.2). As shown in fig. 8.
Embodiment 4 refers to fig. 4 of the drawings, in a web former air suction structure, a first air dividing plate and an air dividing plate of a flow guide structure are designed in a staggered manner, a straight plate at an air inlet end of the first air dividing plate extends to an air inlet pipe, a straight plate at an air outlet end of the first air dividing plate extends to an upper end face of a corresponding first air suction cavity or a corresponding second air suction cavity and is attached to a lower end of a web curtain, and the height of the air inlet end of the first air dividing plate close to an air pipe is gradually reduced towards the air inlet end of the first air dividing plate far away from the air pipe; the air distributing plates are arc-shaped, the air inlet ends of the air distributing plates are staggered, and the air inlet end of the air distributing plate close to the air pipe is gradually lowered towards the air inlet end of the air distributing plate far away from the air pipe and equally divides the air outlet height of the air pipe. Be equipped with between two adjacent first minute aerofoil and divide the aerofoil, be equipped with first minute aerofoil between two adjacent minute aerofoil.
A flow guide structure is arranged in the main air duct of the secondary first suction air cavity;
a flow guide structure is arranged in the main air duct of the secondary second suction air cavity.
First suction wind chamber and first suction wind chamber owner wind channel, second suction wind chamber and second suction wind chamber owner wind channel all adopt back-to-back symmetrical arrangement, all adopt two side suction structures, are applicable to the suction under the great condition of broad width, and solution that can be fine is along the suction homogeneity of broad width.
The first suction plenum and the second suction plenum forms set forth and claimed in this patent include, but are not limited to, the structures in the illustrations of this patent.
Example 6 a web former suction air arrangement with reference to figures 1-2 of the accompanying drawings, the second suction air chamber being immediately adjacent the first suction air chamber and sharing a boundary barrier.
Example 7 with reference to fig. 3, a web former suction air structure, a second suction air chamber is located adjacent to a first suction air chamber with a partition spacing of less than 40mm therebetween.
Example 8 referring to fig. 1 of the drawings, a suction air structure of a web former, a first suction air chamber and a second suction air chamber are folded plates on the wall surfaces close to a web curtain. The wall surfaces of the first suction air cavity and the second suction air cavity, which are close to the net curtain, are planes with included angles.
Example 9 a web former suction air structure with reference to fig. 2-3, the first suction air chamber and the second suction air chamber have curved walls near the web. The wall surfaces of the first suction air cavity and the second suction air cavity, which are close to the net curtain, are cambered surfaces.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (10)
1. The utility model provides a lapper suction wind structure, includes first suction wind chamber and second suction wind chamber, and the net curtain top is equipped with the diffuser, and the lower extreme in the motion direction low reaches of net curtain is equipped with down the compression roller, and the upper end in the motion direction low reaches of net curtain is equipped with the compression roller, goes up the compression roller and is circular roller structure with lower compression roller, goes up the compression roller and cooperates with lower compression roller, and rotates opposite direction, its characterized in that: be located the net curtain below and be equipped with first suction wind chamber and second suction wind chamber independent each other with lower pinch roll both sides, first suction wind chamber and second suction wind chamber are located the extension section of pinch roll left and right sides department for laminating upper compression roller and pinch roll near department down.
2. A web former suction wind structure according to claim 1, characterized in that: the second suction wind cavity is in the low reaches in first suction wind cavity, and the compression roller left and right sides is down wrapped up in second suction wind cavity, and first minute chamber and the second that the second suction wind cavity is divided into the laminating net curtain of upper end by the compression roller down divide the chamber, and first suction wind cavity of laminating in first minute chamber one side, first minute chamber and second divide the upper end in chamber to be equipped with the extension section that compression roller and compression roller subsides nearly department down in laminating respectively.
3. A web former suction wind structure according to claim 1, characterized in that: the first air cavity main air duct is connected with a first suction air cavity, the first air cavity main air duct is connected with a fan through an air duct, airflow above the net curtain flows through the first suction air cavity and then is collected in the first air cavity main air duct, and enters the fan through the air duct, and an air equalizing device is further arranged in the first suction air cavity; the second air cavity main air duct is connected with the second suction air cavity, the second air cavity main air duct is connected with the fan through an air pipe, and air flow above the net curtain flows through the second suction air cavity and then is collected in the second air cavity main air duct and enters the fan through the air pipe.
4. A web former suction wind structure according to claim 3, characterized in that: the flow guide structures are distributed in the first suction air cavity and the first suction air cavity main air duct and the second suction air cavity main air duct.
5. A web former suction wind structure according to claim 4, characterized in that: the water conservancy diversion structure is for dividing the aerofoil, divides the aerofoil to be the arc, divides the aerofoil both ends to continue straight board, divides the aerofoil air inlet end to extend to the air-supply line, divides the aerofoil air-out end to extend to the up end that corresponds first suction wind chamber or second suction wind chamber, and the air inlet end height that is close to the branch aerofoil of tuber pipe reduces to the air inlet end of the branch aerofoil of keeping away from the tuber pipe gradually.
6. A web former suction wind structure according to claim 4, characterized in that: the air guide structure is an air distribution plate, the air distribution plate is arc-shaped, the air inlet ends of the air distribution plate are highly staggered, and the air inlet end of the air distribution plate close to the air pipe is gradually lowered towards the air inlet end of the air distribution plate far away from the air pipe and equally divides the air outlet height of the air pipe.
7. A web former suction wind structure according to claim 4, characterized in that: the two sides of the main air channel of the first suction air cavity and the two sides of the main air channel of the second suction air cavity are both provided with air pipes, the main air channels of the first suction air cavity and the second suction air cavity are internally provided with a flow guide structure, the flow guide structure is an air dividing plate, and the center of the main air channels of the first suction air cavity and the second suction air cavity is divided into two secondary first suction air cavity main air channels and secondary second suction air cavity main air channels by the air dividing plate far away from the air pipes.
8. A web former suction wind structure according to claim 1, characterized in that: the second suction plenum is immediately adjacent to the first suction plenum, both sharing a boundary baffle.
9. A web former suction wind structure according to claim 1, characterized in that: the second suction air cavity is close to the first suction air cavity, and the distance between the two partition plates is less than 40 mm.
10. A web former suction wind structure according to claim 3, characterized in that: the wall surfaces of the first suction air cavity and the second suction air cavity, which are close to the net curtain, are folded plates and/or arc plates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121744660.2U CN215517889U (en) | 2021-07-28 | 2021-07-28 | Air suction structure of web former |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121744660.2U CN215517889U (en) | 2021-07-28 | 2021-07-28 | Air suction structure of web former |
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| CN215517889U true CN215517889U (en) | 2022-01-14 |
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| CN202121744660.2U Active CN215517889U (en) | 2021-07-28 | 2021-07-28 | Air suction structure of web former |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113481662A (en) * | 2021-07-28 | 2021-10-08 | 浙江朝隆纺织机械股份有限公司 | Air suction structure of web former |
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2021
- 2021-07-28 CN CN202121744660.2U patent/CN215517889U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113481662A (en) * | 2021-07-28 | 2021-10-08 | 浙江朝隆纺织机械股份有限公司 | Air suction structure of web former |
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| CP01 | Change in the name or title of a patent holder |
Address after: 325000 No. 62, Qin Feng Road, Ouhai Xiyan Industrial Park, Wenzhou, Zhejiang Patentee after: Zhejiang Chaolong Textile Machinery Co.,Ltd. Address before: 325000 No. 62, Qin Feng Road, Ouhai Xiyan Industrial Park, Wenzhou, Zhejiang Patentee before: ZHEJIANG CL TEXTILE MACHINERY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 39, Qinfeng Road, Xianyan Street, Ouhai District, Wenzhou City, Zhejiang Province, 325000 Patentee after: Zhejiang Chaolong Textile Machinery Co.,Ltd. Address before: 325000 No. 62, Qin Feng Road, Ouhai Xiyan Industrial Park, Wenzhou, Zhejiang Patentee before: Zhejiang Chaolong Textile Machinery Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |