CN108677259A - A kind of equal wind apparatus of the adjustable spinning-drawing machine of wind pressure - Google Patents
A kind of equal wind apparatus of the adjustable spinning-drawing machine of wind pressure Download PDFInfo
- Publication number
- CN108677259A CN108677259A CN201810938408.1A CN201810938408A CN108677259A CN 108677259 A CN108677259 A CN 108677259A CN 201810938408 A CN201810938408 A CN 201810938408A CN 108677259 A CN108677259 A CN 108677259A
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- CN
- China
- Prior art keywords
- plate
- wind
- filter
- box
- drawing machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
- D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
Abstract
The present invention discloses a kind of equal wind apparatus of the adjustable spinning-drawing machine of wind pressure, including inlet box, work box, air outlet box and measuring device, the inlet box is connected to the left side of work box, the air outlet box is connected to the right side of work box, the measuring device is connected to the top of air outlet box, the top of the work box is removably connected with head cover by the first bolt, the inside of the work box is also associated with the first equal wind apparatus by way of clamping, filter device and the second homogenating plate, the first equal wind apparatus is arranged in the left side of filter device, second homogenating plate is arranged in the right side of filter device.The design of filter device of the present invention has filtered out dust, fiber, impurity in air, so that distinguished and admirable more stablize, improve the quality of spinning-drawing machine spinning, pass through the common equal wind effect of the first equal wind apparatus, cellular board and the second homogenating plate, equal wind effect is improved, while the wind speed at branch mailbox can be measured out to judge whether wind speed meets the requirements.
Description
Technical field
The present invention relates to spinning field of machining technology, more particularly to the equal wind of a kind of adjustable spinning-drawing machine of wind pressure fills
It sets.
Background technology
It is well known that spinning-drawing machine is a kind of be used between spinning-drawing machine cooling cross air blowing device and spinning-drawing machine with equal wind apparatus
On, equal wind processing is carried out to the cold wind of spinning-drawing machine cooling cross air blowing device blowout, to ensure the uniformity and stability of cold wind
Auxiliary device is widely used in machining field；The equal wind apparatus of existing spinning-drawing machine include work box,
Aerofoil, blast pipe and wind conveying pipe are provided with working chamber in work box, and blast pipe and wind conveying pipe are separately positioned on work box or so two
End, and blast pipe and wind conveying pipe are communicated with working chamber, multigroup equal air holes are provided on homogenating plate, and homogenating plate setting is working
In case；Wind conveying pipe output end need to be only mounted on spinning-drawing machine on input terminal when this blast pipe and wind conveying pipe use, and will be into
Air hose input terminal is mounted on spinning-drawing machine cooling cross air blowing device output end, while cooling down cross air blasting to spinning-drawing machine by homogenating plate
The cold wind that device is blown into carries out equal wind processing, and cold wind input spinning-drawing machine is interior by treated.
If this spinning-drawing machine is contained in the cold air for finding spinning-drawing machine cooling cross air blowing device output in equal wind apparatus use
A large amount of dusts, then its using effect can be influenced by being directly inputted in spinning-drawing machine；And equal wind effect is undesirable, while last outlet air
Wind-force there is no corresponding test device, the size of the wind-force made is unknowable, may influence the quality of spinning, while equal wind apparatus
In wind pressure it is unadjustable, the poor practicability of device.
Invention content
The purpose of the present invention is to provide a kind of equal wind apparatus of the adjustable spinning-drawing machine of wind pressure, to solve in the prior art
Whole in caused drawbacks described above or one.
A kind of equal wind apparatus of the adjustable spinning-drawing machine of wind pressure, including inlet box, work box, air outlet box and measuring device,
The inlet box is connected to the left side of work box, and the air outlet box is connected to the right side of work box, and the measuring device is connected to
The top at the top of air outlet box, the work box is removably connected with head cover by the first bolt, and the inside of the work box is logical
The mode for crossing clamping is also associated with the first equal wind apparatus, filter device and the second homogenating plate, and the first equal wind apparatus is arranged in
The left side of filter device, second homogenating plate are arranged in the right side of filter device.
Preferably, the described first equal wind apparatus includes the first compoboard, adjustable plate and the second compoboard, and the adjustable plate is slided
Dynamic to be connected between the first compoboard and the second compoboard, first compoboard, adjustable plate and the second compoboard are equipped with phase
Corresponding square ventilation opening, is additionally provided with pressure relief opening below the square ventilation opening of the adjustable plate, on the work box also
Equipped with air outlet, the air outlet is corresponding with pressure relief opening, and the top of the adjustable plate is also welded with screw rod, the top of the screw rod
Portion is welded with handle, and the screw rod is also threaded with fastening nut, and the screw rod passes through head cover, and the top of the head cover is equipped with
First binds mechanism, and described first mechanism that binds includes jacket and moves plate, and the jacket is welded on the top of head cover, the jacket
Madial wall be equipped with sliding slot, side and the sliding slot for moving plate is slidably connected together.
Preferably, the filter device includes the first filter plate, filter screen, the second filter plate, suspension hook, shaft, ratchet, spine
Pawl and second binds mechanism, and first filter plate is detachably connected with the second filter plate by the second bolt, described
Filter screen is pressed together between the first filter plate and the second filter plate, and the shaft is rotatably connected on one end of the second filter plate, institute
One end that ratchet is fixedly connected on shaft is stated, the surface of the shaft is equipped with burr, and the pawl is hinged on the second filter plate
Side, the ratchet are matched with pawl, and the top of first filter plate and the second filter plate passes through head cover and positioned at the
Two lower sections for binding mechanism, described second mechanism that binds bind that mechanism structure is identical, and the suspension hook is welded on the first mistake with first
The top of filter plate.
Preferably, the measuring device includes holder, sleeve, mobile bar, positioning bolt, airspeedometer and the leather sheath that keeps out the wind, institute
State the top that holder is welded on air outlet box, at the top of holder, the mobile bar and sleeve, keep out the wind at holder the sleeve weld
The top of leather sheath and air outlet box is slidably connected, and the positioning bolt is connect with bush whorl, the impeller installation of the airspeedometer
In the bottom of mobile bar, the display of the airspeedometer is mounted on the top of air outlet box.
Preferably, the model HHF802 vane anemometers of the airspeedometer.
Preferably, the mesh number of the filter screen is 120-140 mesh.
Preferably, cellular board is additionally provided between the filter device and the second homogenating plate, the cellular board is equipped with hexagon
Through-hole.
Preferably, the length of side of the hexagon through-hole is 1.5mm-2.5mm.
The beneficial effects of the invention are as follows：
1, the design of filter device of the present invention has filtered out dust, fiber, impurity in air so that and it is distinguished and admirable more to stablize,
The quality for improving spinning-drawing machine spinning is opened shifting plate and is taken out by suspension hook at this time since filter screen needs to be replaced frequently or cleans
First filter plate and the second filter plate, the replacement of net can be filtered by unclamping the second bolt, when filter screen need not be replaced,
But there is slack and undisciplined situation in filter screen, need to only unclamp the second bolt of the first filter plate and the second filter plate upper end at this time, turns
Turn axis can be such that filter screen tightens, and then fasten the second bolt, and all bolts that need not so dismantle are filtered from new installation
Net improves work efficiency, while the mechanism design of click so that the direction rotation that shaft can only be tightened to filter screen,
Improve the stability of filter device.
2, the present invention is acted on by the common equal wind of the first equal wind apparatus, cellular board and the second homogenating plate, improves equal wind
Effect so that the outlet air irregularity of entire outlet air surface is low, and obtained fiber quality is higher.
3, the present invention measures device by side can go out the size of wind speed at air outlet box with side, to judge the wind in air outlet box
Whether speed meets parameter request.
4, the present invention realizes the adjusting of wind pressure by the design of the first equal wind apparatus, improves the practicability of device.
Description of the drawings
Fig. 1 is the specific implementation mode structural schematic diagram of the present invention；
Fig. 2 is the structural schematic diagram of the first equal wind apparatus of specific implementation mode of the present invention；
Fig. 3 is the structural schematic diagram of the specific implementation mode cellular board of the present invention；
Fig. 4 is the structural schematic diagram of the second homogenating plate of specific implementation mode of the present invention；
Fig. 5 is the front view of the second filter plate of specific implementation mode of the present invention；
Fig. 6 is the rearview of the second filter plate of specific implementation mode of the present invention；
Fig. 7 is the structural schematic diagram of the first equal wind apparatus of specific implementation mode of the present invention；
Fig. 8 is the position view of the specific implementation mode air outlet of the present invention.
Wherein, inlet box 1, work box 2, air outlet box 3, measuring device 4, the first bolt 5, head cover 6, the first equal wind apparatus
21, filter device 22, the second homogenating plate 23, cellular board 24, the first compoboard 211, adjustable plate 212, the second compoboard 213, just
Rectangular ventilation opening 214, pressure relief opening 215, screw rod 216, handle 217, fastening nut 218, first bind mechanism 219, first filtering
Plate 221, filter screen 222, the second filter plate 223, suspension hook 224, shaft 225, ratchet 226, pawl 227, second are bound mechanism
228, the second bolt 229, jacket 2191, move plate 2192, sliding slot 2193, holder 41, sleeve 42, mobile bar 43, positioning bolt 44,
Airspeedometer 45, the leather sheath 46 that keeps out the wind, hexagon through-hole 241.
Specific implementation mode
Below by the description to embodiment, the shape of for example involved each component of specific implementation mode of the invention, structure
It makes, the mutual alignment between each section and connection relation, the effect of each section and operation principle, manufacturing process and the side of operating with
Method etc., is described in further detail, completeer to help those skilled in the art to have the inventive concept of the present invention, technical solution
Whole, accurate and deep understanding.
As Figure 1-Figure 8, the equal wind apparatus of the adjustable spinning-drawing machine of a kind of wind pressure, including inlet box 1, work box 2, go out
Bellows 3 and measuring device 4, the inlet box 1 are connected to the left side of work box 2, and the air outlet box 3 is connected to the right side of work box 2
Side, the measuring device 4 are connected to the top of air outlet box 3, and the top of the work box 2 is detachably connected by the first bolt 5
There are head cover 6, the inside of the work box 2 to be also associated with the first equal wind apparatus 21, filter device 22 and by way of clamping
Two homogenating plates 23, the first equal wind apparatus 21 are arranged in the left side of filter device 22, and second homogenating plate 23 was arranged in
Filter the right side of device 22.
In the present embodiment, the described first equal wind apparatus 21 includes the first compoboard 211, the combination of adjustable plate 212 and second
Plate 213, the adjustable plate 212 are slidably connected between the first compoboard 211 and the second compoboard 213, first compoboard
211, adjustable plate 212 and the second compoboard 213 are equipped with corresponding square ventilation opening 214, the pros of the adjustable plate 212
The lower section of shape ventilation opening 214 is additionally provided with pressure relief opening 215, is additionally provided with air outlet 25 on the work box 2, the air outlet 25 with let out
Press mouth 215 corresponding, the top of the adjustable plate 212 is also welded with screw rod 216, and the top of the screw rod 216 is welded with handle
217, the screw rod 216 is also threaded with fastening nut 218, and the screw rod 216 passes through head cover 6, and the top of the head cover 6 is set
There is first to bind mechanism 219, described first mechanism 219 that binds includes jacket 2191 and moves plate 2192, and the jacket 2191 is welded
At the top of head cover 6, the madial wall of the jacket 2191 is equipped with sliding slot 2193, the side for moving plate 2192 and sliding slot 2193
It is slidably connected together.
In the present embodiment, the filter device 22 include the first filter plate 221, filter screen 222, the second filter plate 223,
Suspension hook 224, shaft 225, ratchet 226, pawl 227 and second are bound mechanism 228, and first filter plate 221 and second filters
Plate 223 is detachably connected by the second bolt 229, and the filter screen 222 is pressed together on the first filter plate 221 and the second mistake
Between filter plate 223, the shaft 225 is rotatably connected on one end of the second filter plate 223, and the ratchet 226, which is fixedly connected on, to be turned
The surface of one end of axis 225, the shaft 225 is equipped with burr, and the pawl 227 is hinged on the side of the second filter plate 223, institute
The wheel of spine 226 is stated to match with pawl 227, the top of first filter plate, 221 and second filter plate 223 across head cover 6 and
The lower section for the mechanism 228 that binds positioned at second, described second mechanism 228 that binds is identical as first 219 structure of mechanism that binds, described to hang
Hook 224 is welded on the top of the first filter plate 221.
The design of filter device has filtered out dust, fiber, impurity in air so that and it is distinguished and admirable more to stablize, improve spinning
The quality of silk machine spinning is opened since filter screen 222 needs to be replaced frequently or cleans and moves plate and take out the by suspension hook 224 at this time
One filter plate 221 and the second filter plate 223, the replacement of net 222 can be filtered by unclamping the second bolt 229, when filter screen 222
When need not replace, but there is slack and undisciplined situation in filter screen 222, need to only unclamp the filtering of the first filter plate 221 and second at this time
Second bolt 229 of 223 upper end of plate, rotating shaft 225 can be such that filter screen 222 tightens, and then fasten the second bolt 229,
All bolts need not so be dismantled from new installation filter screen 222, improved work efficiency, while the mechanism of click is set
Meter so that the direction rotation that shaft 225 can only be tightened to filter screen 222 improves the stability of filter device 22.
In the present embodiment, the measuring device 4 includes holder 41, sleeve 42, mobile bar 43, positioning bolt 44, wind speed
Meter 45 and the leather sheath 46 that keeps out the wind, the holder 41 are welded on the top of air outlet box 3, and the sleeve 42 is welded on the top of holder 41,
The mobile bar 43 and sleeve 42, holder 41, keep out the wind leather sheath 46 and air outlet box 3 top be slidably connected, the positioning bolt
44 are threadedly coupled with sleeve 42, and the impeller of the airspeedometer 45 is mounted on the bottom of mobile bar 43, the display of the airspeedometer 45
Device is mounted on the top of air outlet box 3.
In the present embodiment, the model HHF802 vane anemometers of the airspeedometer 45.
In the present embodiment, the mesh number of the filter screen 222 is 120-140 mesh.
In the present embodiment, cellular board 24, the honeycomb are additionally provided between the filter device 22 and the second homogenating plate 23
Plate 24 is equipped with hexagon through-hole 241.
In the present embodiment, the length of side of the hexagon through-hole 241 is 1.5mm-2.5mm.
The operation principle of the present invention：Cold wind enters from inlet box 1 to be reached in work box 2, and 21 wind of the first equal wind apparatus is passed through
It is uniformly distributed in entire plate face, dust, fiber, impurity in air are filtered out using filter screen 22, then passes through cellular board
24 blowouts using the further equal wind of the second homogenating plate 23, and reduce wind speed and reduce turbulent flow, obtain uniform cooling air
Stream is blown out from air outlet box 3, when needing the wind speed at measurement air outlet box 3 whether to meet the requirements, unclamps positioning bolt 229 so that
Mobile bar 43 moves down, and stops when the impeller on airspeedometer 45 reaches the medium position in air outlet box 3, observes wind speed at this time
The display of machine 45 is the wind speed that may know that in air outlet box 3, is wanted to which whether the wind speed judged in air outlet box 3 meets parameter
It asks.
When needing to adjust wind pressure size, opens shifting plate 2192 and adjustable plate 212 is pulled up by handle 217, make
It obtains pressure relief opening 215 to be located at square ventilation opening 214, a part of wind is discharged to work by pressure relief opening 215 and air outlet 25 at this time
Make the outside of case 3, has so haved the function that adjust wind pressure, improved the practicability of device.
The present invention is exemplarily described above in conjunction with embodiment, it is clear that the present invention implements not by above-mentioned side
The limitation of formula, if the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is used, or without
It improves and the design of the present invention and technical solution is directly applied into other occasions, within protection scope of the present invention.This
The protection domain of invention should be determined by the scope of protection defined in the claims.
Claims (8)
1. a kind of equal wind apparatus of the adjustable spinning-drawing machine of wind pressure, which is characterized in that including inlet box (1), work box (2), go out
Bellows (3) and measuring device (4), the inlet box (1) are connected to the left side of work box (2), and the air outlet box (3) is connected to work
Make the right side of case (2), the measuring device (4) is connected to the top of air outlet box (3), and the top of the work box (2) passes through
One bolt (5) is removably connected with head cover (6), and the inside of the work box (2) is also associated with first by way of clamping
Wind apparatus (21), filter device (22) and the second homogenating plate (23), the first equal wind apparatus (21) are arranged in filter device
(22) left side, second homogenating plate (23) are arranged in the right side of filter device (22).
2. the equal wind apparatus of the adjustable spinning-drawing machine of wind pressure according to claim 1, it is characterised in that：The first equal wind
Device (21) includes the first compoboard (211), adjustable plate (212) and the second compoboard (213), adjustable plate (212) sliding
Be connected between the first compoboard (211) and the second compoboard (213), first compoboard (211), adjustable plate (212) and
Second compoboard (213) is equipped with corresponding square ventilation opening (214), the square ventilation opening of the adjustable plate (212)
(214) be additionally provided with pressure relief opening (215) below, be additionally provided with air outlet (25) on the work box (2), the air outlet (25) with
Pressure relief opening (215) is corresponding, and the top of the adjustable plate (212) is also welded with screw rod (216), the top of the screw rod (216)
It is welded with handle (217), the screw rod (216) is also threaded with fastening nut (218), and the screw rod (216) passes through head cover
(6), the top of the head cover (6) is bound mechanism (219) equipped with first, and described first mechanism (219) that binds includes jacket
(2191) and plate (2192) is moved, the jacket (2191) is welded on the top of head cover (6), on the madial wall of the jacket (2191)
Equipped with sliding slot (2193), the side for moving plate (2192) is slidably connected together with sliding slot (2193).
3. the equal wind apparatus of the adjustable spinning-drawing machine of wind pressure according to claim 2, it is characterised in that：The filter device
(22) include the first filter plate (221), filter screen (222), the second filter plate (223), suspension hook (224), shaft (225), ratchet
(226), pawl (227) and second binds mechanism (228), and first filter plate (221) and the second filter plate (223) pass through the
Two bolts (229) are detachably connected, and the filter screen (222) is pressed together on the first filter plate (221) and the second filter plate
(223) between, the shaft (225) is rotatably connected on one end of the second filter plate (223), and the ratchet (226) is fixedly connected
The surface of one end in shaft (225), the shaft (225) is equipped with burr, and the pawl (227) is hinged on the second filter plate
(223) side, spine (226) wheel are matched with pawl (227), first filter plate (221) and the second filter plate
(223) lower section that top passes through head cover (6) and binds mechanism (228) positioned at second, described second bind mechanism (228) with
First binds, and mechanism (219) structure is identical, and the suspension hook (224) is welded on the top of the first filter plate (221).
4. the equal wind apparatus of the adjustable spinning-drawing machine of wind pressure according to claim 1, it is characterised in that：The measuring device
(4) include holder (41), sleeve (42), mobile bar (43), positioning bolt (44), airspeedometer (45) and the leather sheath that keeps out the wind (46), institute
The top that holder (41) is welded on air outlet box (3) is stated, the sleeve (42) is welded on the top of holder (41), the mobile bar
(43) top with sleeve (42), holder (41), the leather sheath that keeps out the wind (46) and air outlet box (3) is slidably connected, the positioning bolt
(44) it is threadedly coupled with sleeve (42), the impeller of the airspeedometer (45) is mounted on the bottom of mobile bar (43), the airspeedometer
(45) display is mounted on the top of air outlet box (3).
5. the equal wind apparatus of the adjustable spinning-drawing machine of wind pressure according to claim 4, it is characterised in that：The airspeedometer
(45) model HHF802 vane anemometers.
6. the equal wind apparatus of the adjustable spinning-drawing machine of wind pressure according to claim 3, it is characterised in that：The filter screen
(222) mesh number is 120-140 mesh.
7. the equal wind apparatus of the adjustable spinning-drawing machine of wind pressure according to claim 1, it is characterised in that：The filter device
(22) cellular board (24) is additionally provided between the second homogenating plate (23), the cellular board (24) is equipped with hexagon through-hole (241).
8. the equal wind apparatus of the adjustable spinning-drawing machine of wind pressure according to claim 7, it is characterised in that：The hexagon is logical
The length of side in hole (241) is 1.5mm-2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810938408.1A CN108677259A (en) | 2018-08-17 | 2018-08-17 | A kind of equal wind apparatus of the adjustable spinning-drawing machine of wind pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810938408.1A CN108677259A (en) | 2018-08-17 | 2018-08-17 | A kind of equal wind apparatus of the adjustable spinning-drawing machine of wind pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108677259A true CN108677259A (en) | 2018-10-19 |
Family
ID=63816367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810938408.1A Pending CN108677259A (en) | 2018-08-17 | 2018-08-17 | A kind of equal wind apparatus of the adjustable spinning-drawing machine of wind pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108677259A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210312A (en) * | 2018-10-26 | 2019-01-15 | 佛山市人居环保工程有限公司 | A kind of equal wind apparatus of second level |
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| CN205368562U (en) * | 2015-12-28 | 2016-07-06 | 长乐恒申合纤科技有限公司 | Spinning side -blown bellows with real -time monitoring apparatus |
| CN206168746U (en) * | 2016-11-02 | 2017-05-17 | 无锡市德济商品混凝土有限公司 | Grit sieve |
| CN108291728A (en) * | 2015-12-02 | 2018-07-17 | 豪威株式会社 | Air purifier |
| CN207708683U (en) * | 2017-12-23 | 2018-08-10 | 河南省康源生物工程技术有限公司 | A kind of dust concentration filter device with multiple filtration net |
| CN209162264U (en) * | 2018-08-17 | 2019-07-26 | 安徽和邦纺织科技有限公司 | A kind of equal wind apparatus of the adjustable spinning machine of wind pressure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57114067A (en) * | 1981-01-07 | 1982-07-15 | Hitachi Plant Eng & Constr Co Ltd | Regulator for amount of wind |
| US4666477A (en) * | 1986-04-22 | 1987-05-19 | Weber Technical Products, Division Of Craig Systems Corporation | Adjustable damper for clean room systems |
| CN1427903A (en) * | 2000-05-10 | 2003-07-02 | 齐默尔股份公司 | Cooling pipe for blasting and cooling freshly spun synthetic continuous threads |
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| CN105220249A (en) * | 2015-10-23 | 2016-01-06 | 苏州金纬化纤工程技术有限公司 | The blowing fairing of Spinning Equipments |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210312A (en) * | 2018-10-26 | 2019-01-15 | 佛山市人居环保工程有限公司 | A kind of equal wind apparatus of second level |
| CN109210312B (en) * | 2018-10-26 | 2023-12-01 | 佛山市人居环保工程有限公司 | Two-stage air equalizing device |
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