CN206109608U - Gradient type ring air blast chilling device that super high -speed spinning of polylactic acid short -staple was used - Google Patents

Abstract

The utility model provides a gradient type ring air blast chilling device that super high -speed spinning of polylactic acid short -staple was used, belongs to synthetic fiber production facility technical field. Including cooling cylinder and water conservancy diversion inner skleeve, the cooling cylinder is established in the below of spinneret, the water conservancy diversion inner skleeve establish in the cooling cylinder and with the cooling cylinder in intermurally have the sleeve to separate the chamber, the upper portion that the sleeve separates the chamber is that the chamber is cooled off at last cooling chamber, middle part under surface cooler chamber, lower part are, the filter ruffle is in last cooling intracavity, air conditioner wind is introduced the interface and is fixed on the cooling cylinder and communicate with each other with last cooling chamber, and the flow distribution plate is established at the last intracavity and fixed at a distance from one side that the chamber closedtop covered the last cooling chamber of orientation with the sleeve that cools off, establishes flow distribution plate ventilation hole on the flow distribution plate, the surface cooler is established between cooling cylinder and water conservancy diversion inner skleeve, just with the cooling water circulation heat transfer device tube coupling, the filter screen cover cools off the intracavity under in. Ensureing the spinneret and smoothly extruding polylactic acid fuse -element silk, satisfy the quick cooling requirement to the fuse -element strand silk, the guarantee super high -speed spinning can be gone on.

Description

The gradient type ring wind quenching device of polylactic acid short-fiber super high-speed spinning

Technical field

This utility model belongs to synthetic fibers production equipment technical field, and in particular to a kind of polylactic acid short-fiber ultrahigh speed The gradient type ring wind quenching device of spinning.

Background technology

Known melt spinning is from the spinneret of spinning-drawing machine by the high polymer spinning melt of such as PA and/or PE etc Extrude in spinneret orifice, melt stream Jing coolings, the stretching successively of extrusion, into strand, strand is used as rear spinning drawing-off for final set Precursor or other purposes.Squeeze in spinneret orifice of the high polymer spinning melt from the spinneret of spinning-drawing machine up to by coiler device winding Spinning process in after mobile geodetic deformation area, oriented crystalline area and plastic deformation area.

As is known in the industry, due to just from spinneret into hundred, be full of and thousand or even tire out ten thousand spinneret holes（Micropore）Middle extrusion Delicate and intensive melt yarns high temperature fused state is in because of not yet solidified forming and melt temperature is far above surrounding Air themperature, but due to the extremely weak delicacy of melt yarns now, thus air cooling need to be implemented by chiller, it is allowed to uniform Experience unanimously and stably flow deformation area, oriented crystalline area and plastic deformation area.

Aforesaid chiller is essentially cold wind blower, due to the wind speed of cold wind blower, air quantity, pathogenic wind-warm it is equal Even property and concordance and stability all can produce corresponding to the quality of spinning fibre, fiber number, drawability energy and percentage elongation etc. Impact, thus the wind of quenching is more uniform, more consistent and stable, better to the cooling effect of melt yarns, more can obtain The tow of uniformity, precursor quality is better, more beneficial to the production of rear spinning drawing-off, finally can more obtain the product of high-quality.

Aforesaid cold wind blower can be divided into perpendicular cold wind blower and horizontal cold wind blower, and horizontal stroke is commonly used at present Cold wind blower, and the horizontal cold wind blower is divided into two kinds of lateral-blowing air cooling device and ring wind quenching device.It is side-blown Air-cooling device has simple structure, easy to operate and relatively cheap strong point, but because the wind of cross air blasting is from a direction, Thus near lateral-blowing air cooling device air outlet silk cooling effect it is relatively preferable, but away from air outlet silk it is cold But effect is often difficult to reach the expection of industry, and specifically, tow is uneven, and precursor is of low grade.In view of current spinning-drawing machine Mostly spinneret is arranged in a circular formation, thus generally using the ring wind quenching device that ventilative property, uniformity are relatively good.Due to ring Quenching can eliminate the aforementioned deficiency of lateral-blowing air cooling device, make curing molding condition spatially residing between silk and silk It is essentially identical, there is achievement for the consistent undrawn yarn of fiber number is obtained, thus thought highly of by industry.

The technical information of the ring wind quenching device of melt spinning can be seen in disclosed Chinese patent literature, such as CN202925169U（Ring wind quenching device）、CN105177738A（The ring wind quenching device of melt spinning）、 CN205398790U（A kind of novel spinning ring blowing apparatus ring Blowing drum）、CN202450199U（High-strength high-modulus polyethylene fiber Ring wind quenching device）、CN203923476U（A kind of ring wind quenching device）、CN203890507U（For in synthetic fiber spinning Ring blowing drum device）、CN205171027U（A kind of synthetic fiber spinning ring blowing device）、CN103820868B（One kind production Super fine denier, the ring blowing device of high-quality spinning）、CN103820867A（A kind of ring wind quenching dress of preparing superfine denier yarn Put）、CN2418138Y（High-wind-speed low-damp cyclical blowing device）And CN102517659A（Open lower air intake blow head ring blowing dress Put）, etc..

What typical " adjustable circular air blow chiller " and CN104233481A such as CN102199796B recommendations was provided " a kind of multistage ring hair-dryer of hollow polyphony thioether short fiber ", the common feature of this two patent formulas is adjusted to cooling down wind Section, as the former carries out Staged Air Injection, the wind speed for making the cooling wind into tow in passage is tapered into from top to bottom（Explanation The 0020th section of book）；As the latter is adjusted to blast（Description 0009-0010 sections）.But be not given and pathogenic wind-warm is implemented The enlightenment that gradient is adjusted, that is to say, that do not provide the enlightenment for implementing gradient ring wind quenching to tow, that is to say, that do not provide right Tow implements the enlightenment of gradient ring wind quenching.

As is known in the industry, due to the whole spinning speed of polylactic acid short-fiber overshoot reach 6000-8000m/min, even more high, because Technical bottleneck of this rate of cooling into restriction spinning speed.Current method is：On the one hand reduce coming from air-conditioning device The temperature of cold wind, another aspect increases the air quantity and wind speed of the cold wind in the unit interval.But facts have proved that the method is can not Take, because when the temperature of the cold wind for exceedingly reducing coming from air-conditioning device, can be to the spray of the structural system of filament spinning component Filament plate causes quenching, and so as to cause fiber core-skin difference to increase because of quenching, strand hardens, and feel is deteriorated, and affects the quality of fiber； Again because blindly increasing the air quantity and wind speed of the cold wind in the unit interval, can both cause the diverging of tow, fiber Dutch roll, fiber Line density and CV values increase, or even cause fiber mutually to wind, it is impossible to normal production, and the increase of energy consumption can be caused again.

For above-mentioned prior art, it is necessary to the structure of ring wind quenching device is improved and adaptation polylactic acid is used Chopped fiber super high-speed spinning requires that technical scheme described below is produced under this background.

The content of the invention

Task of the present utility model is that offer is a kind of had both helped avoid the spinneret generation quenching shadow to filament spinning component Ring and use guarantee spinneret and be swimmingly conducive to polylactic acid melt strand extrusion to realize melt yarns quick cooling simultaneously And obtain desired cooling effect and use the gradient of the polylactic acid short-fiber super high-speed spinning for ensureing super high-speed spinning requirement Formula ring wind quenching device.

What task of the present utility model was performed by, a kind of gradient type ring of polylactic acid short-fiber super high-speed spinning Cold wind blower, including a cooling cylinder and a water conservancy diversion inner sleeve, cooling cylinder is in a state of use corresponding to the spinning of spinning-drawing machine The lower section of the spinneret of component is arranged, water conservancy diversion inner sleeve be arranged in cooling cylinder and the water conservancy diversion inner sleeve outer wall and cooling cylinder Inwall between constitute have a sleeve separate space, sleeve separate space top be configured to upper cooling chamber, middle part is configured to surface cooler chamber, and Bottom is configured to lower cooling chamber, and the top of sleeve separate space is closed by sleeve separate space closedtop lid, and the bottom of sleeve separate space by Sleeve separate space bottom sealing plate is closed, on the wall body of the upper end of water conservancy diversion inner sleeve and the region corresponding to cooling chamber on described with High density state offers air vent, and on the wall body of the lower end of water conservancy diversion inner sleeve and corresponding to the lower cooling chamber Region equally offers lower air vent with high density state, and the middle section of water conservancy diversion inner sleeve is configured to inner sleeve guidewire lumen, and this is interior Sleeve guidewire lumen is from the top insertion of water conservancy diversion inner sleeve to bottom；One filter ruffle, the filter ruffle be located at described upper cooling intracavity and It is coated on the outer wall of the water conservancy diversion inner sleeve, the upper air vent is covered by the filter ruffle；One air-conditioner wind introduce interface and One flow distribution plate, air-conditioner wind introduce interface the position corresponding to cooling chamber on described be fixed on the cooling cylinder and with it is cold But chamber communicates, and flow distribution plate is arranged on cooling intracavity and the upper edge of the flow distribution plate in the position that interface is introduced corresponding to air-conditioner wind Fix towards the side of upper cooling chamber with the sleeve separate space closedtop lid, flow distribution plate is offered with high density state on flow distribution plate and is led to Air holes；One surface cooler, the surface cooler is arranged on the cooling cylinder and water conservancy diversion inner sleeve in the position corresponding to the surface cooler chamber Between, and the surface cooler is connected in a state of use with cooling water circulation heat-exchanger rig pipeline；One filter screen set, the filter screen set position Intracavity and it is coated on the wall body of the lower end of the water conservancy diversion inner sleeve in the lower cooling.

In a specific embodiment of the present utility model, on the wall body of described cooling cylinder and corresponding to institute The position for stating lower cooling chamber is provided with a sensor, and the sensor probes into lower cooling intracavity.

In another specific embodiment of the present utility model, described sensor is temperature sensor.

In another specific embodiment of the present utility model, described filter ruffle is non-woven fabrics or non-woven mat filter ruffle.

In another specific embodiment of the present utility model, the temperature of the lower cooling chamber is less than the upper cooling chamber Temperature.

In an also specific embodiment of the present utility model, the temperature of the lower cooling chamber is 5-15 DEG C, and institute The temperature for stating cooling chamber is 15-22 DEG C.

Of the present utility model more and in a specific embodiment, described flow distribution plate is circular arc flow distribution plate, and It is corresponding that the middle part of the length direction of the flow distribution plate 6 introduces interface with the air-conditioner wind.

In an of the present utility model and then specific embodiment, the filter screen set is filtered for the rustless steel of 250-350 mesh Net.

Include fin and cooling water in surface cooler of the present utility model and more and in a specific embodiment, described Pipe, the quantity of fin has the plural number piece that the circumferencial direction around the surface cooler chamber is spaced apart with radiation regimes and positions Between the inwall of the cooling cylinder and the outer wall of the water conservancy diversion inner sleeve, cooling water pipe is placed on a heat sink and forms coil pipe The construction of shape, one end of the cooling water pipe is configured to cooling water intake, and the other end of cooling water pipe is configured to cooling water and returns The mouth of a river, the cooling water intake and cooling water water return outlet from the surface cooler chamber be stretched over the cooling cylinder it is outer and with it is described Cooling water circulation heat-exchanger rig pipeline connection.

It is of the present utility model and and then a specific embodiment in, in the cooling cylinder towards the surface cooler chamber The side and circumferencial direction for being positioned around cooling cylinder in the bottom corresponding to the fin is fixed with a filler ring, it is described to dissipate Backing is bearing on the filler ring；Expand in the end of the cooling water intake and be provided with a cooling water inlet pipe road adapting flange, and Expand in the end of the cooling water water return outlet and be provided with a CWR road adapting flange, cooling water inlet pipe road adapting flange And CWR road adapting flange is connected respectively with described cooling water circulation heat-exchanger rig pipeline, this is cooling water circulation Heat-exchanger rig is the circulating pump for being furnished with storage tank and refrigerating plant；A water inlet is provided with the cooling water intake and adjusts control Valve processed.

The technical scheme that this utility model is provided between the outer wall of water conservancy diversion inner sleeve and the inwall of cooling cylinder due to constituting There is a sleeve separate space, in the surface cooler intracavity of the sleeve separate space surface cooler is provided with, it is cold on cooling cylinder and on corresponding to But the position in chamber is provided with air-conditioner wind and introduces interface and in upper cooling intracavity and in the position that interface is introduced corresponding to air-conditioner wind Put by carrier of sleeve separate space top sealing plate and secure a flow distribution plate, thus the polylactic acid melt sprayed when the spinneret of filament spinning component Strand by way of inner sleeve guidewire lumen when, first by the flow distribution plate air vent of the part cold wind in sleeve separate space successively Jing flow distribution plates, Filter ruffle and upper air vent enter the top of inner sleeve guidewire lumen to its ring wind quenching, and then by surface cooler in sleeve separate space Another part cold wind is cooled down then, and again successively cooling chamber, filter screen set and lower air vent enter the cold wind Jing after surface cooler cooling under Jing Enter the bottom of inner sleeve guidewire lumen to its ring wind quenching, not only can avoid producing impact to spinneret because of quenching, it is ensured that Spinneret swimmingly extrudes polylactic acid melt silk, and disclosure satisfy that the quick cooling to melt yarns requires and obtain the phase The cooling effect of prestige, and then ensure that super high-speed spinning is carried out.

Description of the drawings

Fig. 1 is example structure figure of the present utility model.

Fig. 2 is the schematic cross-sectional view of Fig. 1.

Specific embodiment

In order to be more clearly understood from technical spirit of the present utility model and beneficial effect, applicant is below with reality The mode for applying example elaborates, but to the description of embodiment is not the restriction to this utility model scheme, any foundation The done only pro forma rather than substantial equivalent transformation of this utility model design is regarded as of the present utility model Technical scheme category.

In the following description it is every be related to upper and lower, left and right, the directivity of front and rear or claim directionality concept be all For the location status shown in Fig. 1, thus the spy of the technical scheme that can not be understood as providing this utility model Do not limit.

Fig. 1 and Fig. 2 is referred to, a cooling cylinder 1 and a water conservancy diversion inner sleeve 2 is shown, cooling cylinder 1 is corresponded in a state of use Arrange in the lower section of the spinneret of the filament spinning component of spinning-drawing machine, specifically, be arranged in the frame of spinning-drawing machine.Water conservancy diversion inner sleeve Cylinder 2 is preferably made using iron plate, the water conservancy diversion inner sleeve 2 be arranged in cooling cylinder 1 and the water conservancy diversion inner sleeve 2 outer wall and cooling The top that constituting between the inwall of cylinder 1 has a sleeve separate space 3, sleeve separate space 3 is configured to upper cooling chamber 31, and it is cold that middle part is configured to table Device chamber 32, and bottom is configured to lower cooling chamber 33, and the top of sleeve separate space 3 is closed by sleeve separate space closedtop lid 34, and cover The bottom of cylinder separate space 3 is closed by sleeve separate space bottom sealing plate 35, on the wall body of the upper end of water conservancy diversion inner sleeve 2 and corresponding to front State the region of cooling chamber 31 and upper air vent 21 is offered with high density state, and on the wall body of the lower end of water conservancy diversion inner sleeve 2 simultaneously And equally lower air vent 22 is offered with high density state in the region corresponding to aforementioned lower cooling chamber 33, in water conservancy diversion inner sleeve 2 Centre region is configured to inner sleeve guidewire lumen 23, and the inner sleeve guidewire lumen 23 is from the top insertion of water conservancy diversion inner sleeve 2 to bottom；Illustrate One filter ruffle 4, the filter ruffle 4 is located in aforesaid upper cooling chamber 31 and coats（Also envelope or parcel can be claimed）In preceding guide On the outer wall of sleeve 2, aforementioned upper air vent 21 is covered by the filter ruffle 4；Show that an air-conditioner wind introduces the shunting of interface 5 and Plate 6, air-conditioner wind introduce interface 5 the position corresponding to cooling chamber 31 on aforementioned be fixed on aforementioned cooling cylinder 1 and with it is cold But chamber 31 communicates, and flow distribution plate 6 is arranged in cooling chamber 31 and the flow distribution plate in the position that interface 5 is introduced corresponding to air-conditioner wind 6 upper edge is welded and fixed with aforementioned sleeves separate space closedtop lid 34 towards the side of upper cooling chamber 31, with intensive shape on flow distribution plate 6 State offers flow distribution plate air vent 61；The surface cooler 7 of battle array one is shown, the surface cooler 7 is in the position corresponding to aforementioned surface cooler chamber 32 Be arranged between cooling cylinder 1 and water conservancy diversion inner sleeve 2, and the surface cooler 7 in a state of use with cooling water circulation heat-exchanger rig Pipeline connects；A filter screen set 8 is shown, the filter screen set 8 is located in aforementioned lower cooling chamber 33 and coats（Also envelope or bag can be claimed Wrap up in）On the wall body of the lower end of preceding guide inner sleeve 2.

The upper and lower air vent 21,22 that opens up respectively on the wall body of the upper and lower end of preceding guide inner sleeve 2 and make in water conservancy diversion The upper and lower end of set 2 is configured to just as cellular construction, to constrain the direction of cooling wind.

A sensor is provided with the wall body of aforesaid cooling cylinder 1 and in the position corresponding to aforementioned lower cooling chamber 33 11, the sensor 11 is probeed in lower cooling chamber 33.In the present embodiment, sensor 11 is temperature sensor, for cold under perception But the cold wind in chamber 33 is the temperature of cold air.According to professional general knowledge, in a state of use, sensor 11 by circuit 111 with it is electric Controller is electrically connected.

In the present embodiment, aforesaid filter ruffle 4 is non-woven fabrics filter ruffle, but also can be using non-woven mat or other are equivalent by material The filter ruffle of matter.

In the present embodiment, the temperature of aforementioned lower cooling chamber 33 is less than the temperature of aforementioned upper cooling chamber 31, specifically：Under The temperature of cooling chamber 33 is preferably 5-15 DEG C, is preferably 8-12 DEG C, is preferably 10 DEG C（The present embodiment selects 10 DEG C）, and on The temperature of cooling chamber 31 is preferably 15-22 DEG C, is preferably 18-21 DEG C, is preferably 20 DEG C（The present embodiment selects 20 DEG C）.

Temperature just because of upper and lower cooling chamber 31,33 is different, thus has confirmed the gradient type ring blowing that applicant is said Cooling.Again due to upper cooling chamber 31 cold wind temperature in 15-22 DEG C of scope, thus produce to the spinneret of filament spinning component Quenching affects.

Aforesaid flow distribution plate 6 is circular arc flow distribution plate（Shown in Fig. 2）, and the middle part of the length direction of the flow distribution plate 6 with Aforementioned air-conditioner wind introducing interface 5 is corresponding, introduces interface 5 by the air-conditioner wind being connected with air-conditioning device pipeline and introduces upper cooling chamber 31 Interior cold wind is divided into two parts because of the presence of flow distribution plate 6, a part（Sub-fraction）Shunting on straight Jing Jing flow distribution plates 6 Again the micropore of Jing filter ruffles 4 and upper air vent 21 enter the top of inner sleeve guidewire lumen 23 to polylactic acid melt after plate air vent 61 Strand 9（Also polylactic acid tow can be claimed）Ring wind quenching（Once cool down）, and introduce another part that interface 5 is introduced from air-conditioner wind （It is most of）Disperse to sleeve separate space 3 and the Jing tables at the region by way of surface cooler chamber 32 shown in cold wind arrow as shown in Figure 2 The heat exchange cooling of cooler 7, and then into lower cooling chamber 33, the cold wind in lower cooling chamber 33（5-15℃）Jing filter screen sets 8 successively With the lower air vent 22 of the lower end of water conservancy diversion inner sleeve 2 ring of polylactic acid melt strand 9 is blown into the bottom of inner sleeve guidewire lumen 23 Air cooling（Cooling twice）.

Aforementioned filter screen set 8 is preferably the stainless steel filtering net set of 250-350 mesh, and the preferably rustless steel for 280-320 mesh is filtered The stainless steel filtering net set of net, preferably 300 mesh, the present embodiment is and selects with the stainless steel filtering net set of 300 mesh.

Please emphasis see Fig. 1, aforesaid surface cooler 7 includes fin 71 and cooling water pipe 72, and the quantity of fin 71 has encloses Plural number piece that circumferencial direction around aforementioned surface cooler chamber 32 is spaced apart with radiation regimes and it is positioned in aforementioned cooling cylinder 1 Between the outer wall of wall and preceding guide inner sleeve 2, cooling water pipe 72 is set on fin 71 and forms coil-like construction, should One end of cooling water pipe 72 is configured to cooling water intake 721, and the other end of cooling water pipe 72 is configured to cooling water water return outlet 722, it is outer simultaneously that the cooling water intake 721 and cooling water water return outlet 722 are stretched over aforementioned cooling cylinder 1 from aforementioned surface cooler chamber 32 And be connected with aforementioned cooling water circulation heat-exchanger rig pipeline.

Preferably, in aforementioned cooling cylinder 1 towards the side in aforementioned surface cooler chamber 32 and corresponding to aforementioned fin 71 The circumferencial direction for being positioned around cooling cylinder 1 of bottom be fixed with a filler ring 12, aforementioned fin 71 is bearing on the filler ring 12； Expand in the end of aforementioned cooling water intake 721 and be provided with a cooling water inlet pipe road adapting flange 7211, and in aforementioned cooling water The end expansion of water return outlet 722 is provided with a CWR road adapting flange 7221, cooling water inlet pipe road adapting flange 7211 And CWR road adapting flange 7221 is connected respectively with aforesaid cooling water circulation heat-exchanger rig pipeline, the cooling water Cycle heat exchange device is the circulating pump for being furnished with storage tank and refrigerating plant；One is provided with aforementioned cooling water intake 721 to enter Water adjusting control valve 7212.The temperature of the cold wind of aforementioned lower cooling chamber 33 is just by the opening degree of water inlet adjusting control valve 7212 Size determine.

In the state of water inlet adjusting control valve 7212 is opened, the aforementioned circulating pump work for being furnished with storage tank and refrigerating plant Make, cooling water causes by the road cooling water intake 721, by cooling water intake 721 cooling water pipe 72, then Jing cooling waters are introduced Outlet 722 is drawn and is returned by the road and causes aforementioned storage tank, so as to form water-flow circuit.In this process, by cooling water Pipe 72 provides cold to fin 71, and Jing fin 71 distribute and to the air heat-exchange by way of surface cooler chamber 32, make to enter into down The temperature of the air in cooling chamber 33 is down to 5-15 DEG C, obtains the priority of polylactic acid melt strand 9 by way of inner sleeve guidewire lumen 23 Ring wind quenching twice, rational modification is carried out as needed can obtain ring wind quenching more than twice.

In sum, the technical scheme that this utility model is provided compensate for the shortcoming in prior art, favorably accomplish Invention task, has faithfully cashed the technique effect referred in the superincumbent technique effect hurdle of applicant.

Claims (10)

1. the gradient type ring wind quenching device of a kind of polylactic acid short-fiber super high-speed spinning, it is characterised in that including a cooling Cylinder (1) and a water conservancy diversion inner sleeve (2), cooling cylinder (1) corresponds in a state of use the spinneret of the filament spinning component of spinning-drawing machine Lower section is arranged, water conservancy diversion inner sleeve (2) be arranged in cooling cylinder (1) and the water conservancy diversion inner sleeve (2) outer wall and cooling cylinder (1) The top that constituting between inwall has a sleeve separate space (3), sleeve separate space (3) is configured to upper cooling chamber (31), and middle part is configured to table Cooler chamber (32), and bottom is configured to lower cooling chamber (33), and the top of sleeve separate space (3) by sleeve separate space closedtop lid (34) Closing, and the bottom of sleeve separate space (3) is closed by sleeve separate space bottom sealing plate (35), in the wall body of the upper end of water conservancy diversion inner sleeve (2) Above and in the region for corresponding to cooling chamber (31) on described upper air vent (21) is offered with high density state, and in water conservancy diversion inner sleeve Equally offered with high density state on the wall body of the lower end of cylinder (2) and in the region corresponding to the lower cooling chamber (33) lower logical Air holes (22), the middle section of water conservancy diversion inner sleeve (2) is configured to inner sleeve guidewire lumen (23), inner sleeve guidewire lumen (23) self-conductance The top insertion of stream inner sleeve (2) is to bottom；One filter ruffle (4), the filter ruffle (4) is in described upper cooling chamber (31) and wraps Overlay on the outer wall of the water conservancy diversion inner sleeve (2), the upper air vent (21) is covered by the filter ruffle (4)；One air-conditioner wind draws Incoming interface (5) and a flow distribution plate (6), air-conditioner wind introduces interface (5) and is fixed in the position for corresponding to cooling chamber (31) on described Communicate on the cooling cylinder (1) and with upper cooling chamber (31), flow distribution plate (6) is introducing the position of interface (5) corresponding to air-conditioner wind Put be arranged in cooling chamber (31) and the upper edge of the flow distribution plate (6) with the sleeve separate space closedtop lid (34) towards upper cooling The side in chamber (31) is fixed, and flow distribution plate air vent (61) is offered with high density state on flow distribution plate (6)；One surface cooler (7), should Surface cooler (7) the position corresponding to the surface cooler chamber (32) be arranged on the cooling cylinder (1) and water conservancy diversion inner sleeve (2) it Between, and the surface cooler (7) is connected in a state of use with cooling water circulation heat-exchanger rig pipeline；One filter screen set (8), the filter screen Set (8) is in the lower cooling chamber (33) and is coated on the wall body of the lower end of the water conservancy diversion inner sleeve (2).

2. the gradient type ring wind quenching device of polylactic acid short-fiber super high-speed spinning according to claim 1, it is special Levy is to be provided with a sensing on the wall body of described cooling cylinder (1) and in the position corresponding to the lower cooling chamber (33) Device (11), the sensor (11) is probeed in lower cooling chamber (33).

3. the gradient type ring wind quenching device of polylactic acid short-fiber super high-speed spinning according to claim 2, it is special The sensor (11) levied described in being is temperature sensor.

4. the gradient type ring wind quenching device of polylactic acid short-fiber super high-speed spinning according to claim 1, it is special The filter ruffle (4) levied described in being is non-woven fabrics or non-woven mat filter ruffle.

5. the gradient type ring wind quenching device of polylactic acid short-fiber super high-speed spinning according to claim 1, it is special It is temperature of the temperature of the lower cooling chamber (33) less than the upper cooling chamber (31) to levy.

6. the gradient type ring wind quenching device of polylactic acid short-fiber super high-speed spinning according to claim 5, it is special Levy be the lower cooling chamber (33) temperature be 5-15 DEG C, and the temperature of the upper cooling chamber (31) be 15-22 DEG C.

7. the gradient type ring wind quenching device of polylactic acid short-fiber super high-speed spinning according to claim 1, it is special Levy be described flow distribution plate (6) be circular arc flow distribution plate, and the middle part of the length direction of the flow distribution plate (6) and the air-conditioning It is corresponding that wind introduces interface (5).

8. the gradient type ring wind quenching device of polylactic acid short-fiber super high-speed spinning according to claim 1, it is special Levy the stainless steel filtering net set for being the filter screen set (8) for 250-350 mesh.

9. the gradient type ring wind quenching device of polylactic acid short-fiber super high-speed spinning according to claim 1, it is special The surface cooler (7) described in being is levied including fin (71) and cooling water pipe (72), the quantity of fin (71) has around described The circumferencial direction plural number piece being spaced apart with radiation regimes in surface cooler chamber (32) and the inwall for being positioned at the cooling cylinder (1) And the outer wall of the water conservancy diversion inner sleeve (2) between, cooling water pipe (72) is set on fin (71) and forms coil-like structure Make, one end of the cooling water pipe (72) is configured to cooling water intake (721), and the other end of cooling water pipe (72) is configured to cold But water water return outlet (722), the cooling water intake (721) and cooling water water return outlet (722) are stretched from the surface cooler chamber (32) Open up the cooling cylinder (1) and be connected outward and with the cooling water circulation heat-exchanger rig pipeline.

10. the gradient type ring wind quenching device of polylactic acid short-fiber super high-speed spinning according to claim 9, it is special Levy is towards the side of the surface cooler chamber (32) and at the bottom corresponding to the fin (71) in the cooling cylinder (1) The circumferencial direction for being positioned around cooling cylinder (1) in portion is fixed with a filler ring (12), and the fin (71) is bearing in the filler ring (12) on；Expand in the end of the cooling water intake (721) and be provided with cooling water inlet pipe road adapting flange (7211), and The end expansion of the cooling water water return outlet (722) is provided with CWR road adapting flange (7221), cooling water inlet pipe Road adapting flange (7211) and CWR road adapting flange (7221) fill respectively with described cooling water circulation heat exchange Pipeline connection is put, the cooling water circulation heat-exchanger rig is the circulating pump for being furnished with storage tank and refrigerating plant；Enter in the cooling water A water inlet adjusting control valve (7212) is provided with the mouth of a river (721).