CN211965009U - Fiber winnowing system - Google Patents
Fiber winnowing system Download PDFInfo
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- CN211965009U CN211965009U CN202020132471.9U CN202020132471U CN211965009U CN 211965009 U CN211965009 U CN 211965009U CN 202020132471 U CN202020132471 U CN 202020132471U CN 211965009 U CN211965009 U CN 211965009U
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Abstract
The utility model relates to a technical field is made to panel, discloses a fibre selection by winnowing system, including selection by winnowing case, circulating fan and fibre conveying fan, one side of selection by winnowing case is equipped with the fibre entry, and the bottom of selection by winnowing case is connected with the blast pipe, and circulating fan's export is connected to the blast pipe, and the upper end of selection by winnowing case is equipped with fibre pipeline, and fibre pipeline connects fibre conveying fan's entry, and fibre pipeline passes through the backwind pipe with circulating fan's entry and is connected, is equipped with the baffle on the backwind pipe, has seted up at least one air intake on the backwind pipe, and the air intake is located. This system improves on current equipment, and the baffle cuts off the passageway of return air duct, avoids thoughtlessly having mixed fibre and the dust that MDI glued to be taken back return air duct and blast pipe, and circulating fan passes through the outer fresh air of air intake extraction air separation system, and the circulating air is cleaner, guarantees the selection by winnowing effect, has reduced clearance time and expense, reduce cost, improves production efficiency.
Description
Technical Field
The utility model relates to a technical field is made to the panel, especially relates to a fibre selection by winnowing system.
Background
In the artificial board material, the medium density fiberboard becomes a more mainstream decoration artificial board in the market due to the characteristic of the uniformity of the structure. Along with the more and more urgent requirements of people on environmental protection, the more and more zero-formaldehyde requirements on the fiber board are met, and the development of the fiber board in the formaldehyde-free direction is promoted. At present, MDI glue is mainly added into the formaldehyde-free fiber board at home and abroad to serve as a bonding agent, the MDI glue does not contain formaldehyde, and after the MDI glue is used, the formaldehyde content of the fiber board can reach the standard of formaldehyde-free products.
The air used by the existing winnowing system for producing the aldehyde-free board is internal circulating air, namely the air blown into a fiber conveying pipeline is conveyed into the fiber conveying pipeline again through a return air pipe, after MDI glue is added into the fibers, the fiber separation degree is poor due to the characteristics of strong MDI glue, large specific gravity and the like, so that more fine fibers are mixed in the air returning to the return air pipe from the fiber conveying pipeline, and the fine fibers are very easily adhered to the turning part and the turning part of the winnowing pipeline due to the special pipeline structure of the winnowing system, so that the problems of serious blockage and the like of the winnowing pipeline are caused, the winnowing effect is invalid, the board quality is influenced, the great difficulty is brought to the subsequent production and the cleaning, the cleaning cost and the downtime cost cannot be avoided, and the efficiency of winnowing and the production efficiency are greatly reduced.
In the production process of the fiber board, the air separation mainly has the functions of conveying fibers and separating impurities in the fibers by adjusting the negative pressure of the air separation so as to ensure the quality of the fibers, so that the key for determining whether continuous production can be carried out and whether the quality of products can be ensured is the problem of solving the blockage of an air separation pipeline when the formaldehyde-free board is produced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a fiber winnowing system, which has high efficiency of winnowing fibers.
The utility model provides a technical scheme that its technical problem adopted does:
the utility model provides a fibre selection by winnowing system, includes selection by winnowing case, circulating fan and fibre conveying fan, one side of selection by winnowing case is equipped with the fibre entry, the bottom of selection by winnowing case is connected with the blast pipe, the export of circulating fan is connected to the blast pipe, the upper end of selection by winnowing case is equipped with fibre pipeline, fibre pipeline connects the entry of fibre conveying fan, fibre pipeline passes through the return air duct with circulating fan's entry and is connected, be equipped with the baffle on the return air duct, the baffle cuts off the passageway of return air duct, at least one air intake has been seted up on the return air duct, the air intake is located between circulating fan and the baffle.
As an improvement of the technical scheme, the circulating fan comprises a motor and an impeller arranged on an output shaft of the motor, and the motor is a variable frequency motor.
As an improvement of the technical scheme, the baffle plate is positioned at one end of the return air pipe close to the fiber conveying pipeline.
As an improvement of the technical scheme, the number of the air inlets is three.
As an improvement of the technical scheme, the air inlet is provided with a metal net.
As an improvement of the technical scheme, the lower part of the winnowing box is provided with a hopper cavity, the bottom end of the hopper cavity is provided with a first slag discharge port, and the first slag discharge port is provided with a first rotary valve.
As an improvement of the technical scheme, a second slag discharge port is arranged in the middle of the funnel cavity, and a second rotary valve is arranged on the second slag discharge port.
As an improvement of the technical scheme, the height of the fiber conveying fan is lower than the upper end of the air separation box.
As an improvement of the technical scheme, the air return pipe is hinged with a sealing cover, the sealing cover is arranged beside the air inlet, the area of the sealing cover is larger than that of the air inlet, and when the sealing cover covers the air inlet, the sealing cover completely covers the air inlet.
As an improvement of the above technical solution, the air return pipe includes a first air return pipe and a second air return pipe which are connected to each other, the first air return pipe and the second air return pipe are both provided with flanges, the first air return pipe and the second air return pipe are butted through the flanges, and the partition plate is disposed between the two flanges.
The beneficial effects of the utility model are that:
this fibre air classification system's overall structure is existing equipment, improve on existing equipment basis, adopt the baffle to cut off the passageway of return air duct, avoid thoughtlessly having fibre and the dust that MDI glued to be taken back return air duct and blast pipe, and for having sufficient wind supply in guaranteeing air classification system, the air intake has still been seted up on the return air duct, circulating fan passes through the outer fresh air of air intake extraction air classification system, send into the winnowing box through the blast pipe, wind upwards gets into fibre pipeline again, with the transport fibre. Fresh air is used as circulating air for supplement, MDI glue fiber dust is not mixed, and the circulating air is cleaner, so that blockage of a return air pipe and an air supply pipe due to fiber adhesion is avoided, ventilation is smooth, a winnowing effect is guaranteed, the quality of a plate is guaranteed, the cleaning time and the cleaning cost are reduced, the cost is reduced, and the production efficiency is improved. And the improvement is carried out on the basis of the existing equipment, new equipment does not need to be purchased, and the cost investment of the equipment is greatly reduced.
Drawings
The present invention will be further described with reference to the accompanying drawings and specific embodiments, wherein:
fig. 1 is a schematic side view of an embodiment of the present invention.
Detailed Description
Referring to fig. 1, the utility model discloses a fibre selection by winnowing system, including selection by winnowing box 1, circulating fan 2 and fibre conveying fan 3, one side of selection by winnowing box 1 is equipped with fibre entry 4, the bottom of selection by winnowing box 1 is connected with blast pipe 5, circulating fan 2's export is connected to blast pipe 5, the upper end of selection by winnowing box 1 is equipped with fibre pipeline 6, fibre pipeline 6 connects fibre conveying fan 3's entry, fibre pipeline 6 passes through return air pipe 7 with circulating fan 2's entry and is connected, be equipped with baffle 8 on the return air pipe 7, baffle 8 cuts off the interior passageway of return air pipe 7, at least one air intake 9 has been seted up on the return air pipe 7, air intake 9 is located between circulating fan 2 and the baffle 8.
Specifically, the partition plate 8 is located at one end of the return air pipe 7 close to the fiber conveying pipeline 6, so that the accumulation of fibers in the return air pipe 7 between the partition plate 8 and the fiber conveying pipeline 6 is reduced. The height of the fiber conveying fan 3 is lower than the upper end of the winnowing box 1, and fibers entering the fiber conveying fan 3 enter the fiber conveying fan 3 under the dual effects of wind and gravity, so that the fibers are conveyed more smoothly.
Further, the circulating fan 2 comprises a motor and an impeller installed on an output shaft of the motor, and the motor is a variable frequency motor. The rotating speed of the motor is controlled through the frequency converter, namely the rotating speed of the circulating fan 2 is controlled, different rotating speeds can be adjusted according to different use conditions, the air quantity and the air separation effect can be guaranteed, meanwhile, the power consumption of the fan can be reduced, and the production cost is reduced. For example, the motor of the original equipment has only one rotating speed of 1448rpm, the corresponding power is 132kw.h, the rotating speed of the variable frequency motor is reduced to 868rmp, namely the original 60% through frequency conversion control, the use requirement can also be met, the power consumption of the variable frequency motor is correspondingly reduced, and the power consumption of the fan is also reduced.
And, the air inlet 9 is provided with three. In order to avoid foreign matters in the environment from being sucked into the air separation system, the air inlet 9 is provided with a metal net. The metal net is 50cm-70cm long and 30cm-50cm wide.
Specifically, the lower part of winnowing box 1 is equipped with hopper chamber 11, the bottom in hopper chamber 11 is equipped with first row of cinder notch, be equipped with first change valve 12 on the first row of cinder notch. And a second slag discharge port is arranged in the middle of the funnel cavity 11, and a second rotary valve 13 is arranged on the second slag discharge port. The fibre of remaining in wind selection case 1, the first row of cinder notch of accessible and the discharge of second row of cinder notch set up two row's cinder notches to alleviate row's sediment pressure, guarantee to arrange the sediment smoothly, can judge the panel quality through the fibre discharge simultaneously, see whether have foreign matter such as metal or other debris.
In addition, the return air pipe 7 is hinged with a sealing cover, the sealing cover is arranged beside the air inlet 9, the area of the sealing cover is larger than that of the air inlet 9, and when the sealing cover covers the air inlet 9, the sealing cover completely covers the air inlet 9. The inside surface of the sealing cover is provided with a sealing gasket, and the edge of the sealing cover is at least provided with a lock catch.
Moreover, the return air duct 7 includes a first return air duct 71 and a second return air duct 72 that are connected to each other, flanges are provided on both the first return air duct 71 and the second return air duct 72, the first return air duct 71 and the second return air duct 72 are butted by the flanges, and the partition plate 8 is provided between the two flanges.
Like this, when sealing lid seal up air intake 9, take out baffle 8 between two flanges, this fibre air separation system can regard as current equipment to use again, and under this condition, circulating fan 2 sends into air selection case 1 through blast pipe 5 with wind, and wind upwards gets into fibre pipeline 6 again, and later wind is sucked circulating fan 2 again through return air pipe 7, sends to blast pipe 5 through circulating fan 2 again, so carries out the internal circulation.
The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should be all included in the protection scope of the present invention as long as the technical effects are achieved by any of the same or similar means.
Claims (10)
1. The utility model provides a fibre air classification system, includes wind selection box (1), circulating fan (2) and fibre conveying fan (3), one side of wind selection box (1) is equipped with fibre entry (4), the bottom of wind selection box (1) is connected with blast pipe (5), the export of circulating fan (2) is connected in blast pipe (5), the upper end of wind selection box (1) is equipped with fibre pipeline (6), the entry of fibre conveying fan (3) is connected in fibre pipeline (6), fibre pipeline (6) are connected its characterized in that through return air pipe (7) with the entry of circulating fan (2): the air return pipe (7) is provided with a partition plate (8), the partition plate (8) partitions a channel of the air return pipe (7), the air return pipe (7) is provided with at least one air inlet (9), and the air inlet (9) is positioned between the circulating fan (2) and the partition plate (8).
2. A fiber winnowing system according to claim 1 wherein: the circulating fan (2) comprises a motor and an impeller arranged on an output shaft of the motor, and the motor is a variable frequency motor.
3. A fiber winnowing system according to claim 1 wherein: the partition plate (8) is positioned at one end of the return air pipe (7) close to the fiber conveying pipeline (6).
4. A fiber winnowing system according to claim 1 wherein: the number of the air inlets (9) is three.
5. A fiber winnowing system according to claim 1 or 4, wherein: and a metal net is arranged on the air inlet (9).
6. A fiber winnowing system according to claim 1 wherein: the lower part of winnowing box (1) is equipped with hopper chamber (11), the bottom in hopper chamber (11) is equipped with first row of cinder notch, be equipped with first commentaries on classics valve (12) on the first row of cinder notch.
7. A fiber winnowing system according to claim 6, wherein: and a second slag discharge port is arranged in the middle of the funnel cavity (11), and a second rotary valve (13) is arranged on the second slag discharge port.
8. A fiber winnowing system according to claim 1 wherein: the height of the fiber conveying fan (3) is lower than the upper end of the air separation box (1).
9. A fiber winnowing system according to claim 1 or 3, wherein: articulated on return air pipe (7) have sealed lid, air intake (9) side is located to sealed lid, the area of sealed lid is greater than air intake (9), works as sealed lid covers on air intake (9), sealed lid covers air intake (9) completely.
10. A fiber winnowing system according to claim 1 wherein: the air return pipe (7) comprises a first air return pipe (71) and a second air return pipe (72) which are connected with each other, flanges are arranged on the first air return pipe (71) and the second air return pipe (72), the first air return pipe (71) and the second air return pipe (72) are in butt joint through the flanges, and the partition plate (8) is arranged between the two flanges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020132471.9U CN211965009U (en) | 2020-01-20 | 2020-01-20 | Fiber winnowing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020132471.9U CN211965009U (en) | 2020-01-20 | 2020-01-20 | Fiber winnowing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211965009U true CN211965009U (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020132471.9U Active CN211965009U (en) | 2020-01-20 | 2020-01-20 | Fiber winnowing system |
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| CN (1) | CN211965009U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112706252A (en) * | 2020-12-28 | 2021-04-27 | 广西三威林产工业有限公司 | Fiber preheating winnowing system for formaldehyde-free fiberboard production |
-
2020
- 2020-01-20 CN CN202020132471.9U patent/CN211965009U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112706252A (en) * | 2020-12-28 | 2021-04-27 | 广西三威林产工业有限公司 | Fiber preheating winnowing system for formaldehyde-free fiberboard production |
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Address after: 543000 No.81 Tangyuan Road, Wanxiu District, Wuzhou City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Sanwei home new material Co.,Ltd. Address before: 543000 No.81 Tangyuan Road, Wanxiu District, Wuzhou City, Guangxi Zhuang Autonomous Region Patentee before: GUANGXI SUNWAY FOREST PRODUCTS INDUSTRY Co.,Ltd. |