CN212870592U - Drying device is used in flax and regenerated cellulose fiber blending colored spun yarn production - Google Patents
Drying device is used in flax and regenerated cellulose fiber blending colored spun yarn production Download PDFInfo
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- CN212870592U CN212870592U CN202021780096.5U CN202021780096U CN212870592U CN 212870592 U CN212870592 U CN 212870592U CN 202021780096 U CN202021780096 U CN 202021780096U CN 212870592 U CN212870592 U CN 212870592U
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- 238000001035 drying Methods 0.000 title claims abstract description 114
- 229920003043 Cellulose fiber Polymers 0.000 title claims abstract description 17
- 241000208202 Linaceae Species 0.000 title claims abstract description 17
- 235000004431 Linum usitatissimum Nutrition 0.000 title claims abstract description 17
- 239000004627 regenerated cellulose Substances 0.000 title claims abstract description 17
- 238000009985 spun yarn production Methods 0.000 title claims description 12
- 238000002156 mixing Methods 0.000 title claims description 9
- 238000004804 winding Methods 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 23
- 238000009423 ventilation Methods 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000007664 blowing Methods 0.000 claims description 10
- 238000009987 spinning Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 3
- 239000008213 purified water Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 230000001360 synchronised effect Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 description 8
- 238000012545 processing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007605 air drying Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The utility model provides a drying device for producing flax and regenerated cellulose fiber blended colored spun yarns, which comprises a drying box, wherein the side wall of the same side of the drying box is provided with a wire inlet and a wire outlet, used for conveying the yarns in and out, the two sides in the drying box are symmetrically provided with bobbins, winding grooves are arranged on the bobbins in a surrounding manner, the yarns can sequentially pass through the winding grooves on the two sides, spirally surrounding the bobbins at two sides, fixing a driving cavity at one side outside the drying box, coaxially fixing a connecting shaft at one end of the bobbin, penetrating the connecting shaft into the driving cavity and mechanically connecting the connecting shaft with a driving device in the driving cavity, thereby realizing the synchronous rotation of the connecting shafts at the two sides to drive the bobbin to rotate so as to drive the yarn to be conveyed through the drying box, a drying air outlet mechanism is fixed on the drying box, and the air outlet end of the drying air outlet mechanism is positioned in the middle of the bobbins at two sides so as to comprehensively dry the yarns above and below in the transmission process.
Description
Technical Field
The utility model relates to a spinning production processing technology field especially relates to a flax and regenerated cellulose fiber blending drying device for colored spun yarn production.
Background
The drying of the textile yarns is required in the process of textile production and processing, so that the drying of the textile yarns reaches a certain quality standard, and particularly, the drying is strictly controlled for some mixed material spinning and dyed spinning, for example, flax and regenerated cellulose fiber blended colored spun yarns, and the blended dyed yarns are dried after being bleached and dyed, so that the drying time of the conventional yarn drying device is longer, the efficiency is lower, the device is not beneficial to timely and efficiently removing moisture in the yarns, the working efficiency of the spinning production and processing is influenced, and the development requirements of high quality and high efficiency of enterprises are not facilitated.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a flax and regenerated cellulose fiber blending drying device for colored spun yarn production to realize the function that can further promote drying efficiency.
Based on above-mentioned purpose, the utility model provides a flax and regenerated cellulose fiber blending drying device for colored spun yarn production, include:
the drying box is provided with a wire inlet and a wire outlet on the side wall of the same side of the drying box and is used for conveying yarns in and out;
the winding drums are symmetrically arranged on two sides in the drying box, winding grooves are formed in the winding drums in an encircling mode, and yarns can sequentially pass through the winding grooves on the two sides to spirally encircle the winding drums on the two sides;
the driving cavity is fixed at one side outside the drying box;
the connecting shaft is coaxially fixed at one end of the winding drum and penetrates into the driving cavity;
the driving device is arranged in the driving cavity, is mechanically connected with one end, penetrating into the driving cavity, of the connecting shaft and is used for driving the connecting shafts on the two sides to synchronously rotate so as to drive the yarns to be conveyed;
and the drying air-out mechanism is fixed on the drying box, and the air-out end of the drying air-out mechanism is positioned in the middle of the bobbins at two sides and used for blowing and drying towards the yarns.
Preferably, the driving device comprises a worm wheel, a worm and a motor, the worm wheel is coaxially fixed at one end of the connecting shaft penetrating into the driving cavity, the worm is meshed with the worm wheels on two sides, the motor is fixed at one side in the driving cavity, and the output end of the motor is coaxially fixed at one end of the worm.
Preferably, connecting axle and bobbin all design for hollow structure, and connecting axle one end runs through out the worm wheel to be connected with first rotary joint, first rotary joint is external to have the feed liquor pipe, be used for to injecting heat conduction liquid medium into the bobbin, the bobbin is kept away from connecting axle one end and is connected with the second rotary joint, and the second rotary joint is external to have a drain pipe, and the drain pipe runs through out the drying cabinet, is used for circulating out the liquid.
Preferably, the thermally conductive liquid medium is purified water.
Preferably, the drying air-out mechanism comprises a ventilation box, a heating coil and a fan, the ventilation box is horizontally fixed in the drying box and located in the middle of the bobbins on two sides, a plurality of air vents are formed in the upper end face and the lower end face of the ventilation box to respectively face the yarns above and below, the heating coil is arranged in the ventilation box and used for being electrified and heated, the fan is fixed on the outer side wall of the drying box, and the fan is communicated with the ventilation box and used for supplying air into the ventilation box.
Preferably, the heating coil is designed to be serpentine in the horizontal direction.
Preferably, not less than 5 vent holes are provided.
From the above, the utility model provides a flax and regenerated cellulose fiber blending drying device for colored spun yarn production, through setting up the drying cabinet, the drying cabinet has seted up inlet and outlet on same one side lateral wall, be used for the yarn conveying business turn over, both sides symmetry is equipped with the bobbin in the drying cabinet, the winding groove is equipped with in the winding on the bobbin, the yarn can be in proper order through the winding groove of both sides, in order to be the heliciform around on the bobbin of both sides, thereby it locates in the drying cabinet to be favorable to the yarn of great area to wind, in order to dry through the drying cabinet simultaneously, one side is fixed with the drive chamber outside the drying cabinet, the coaxial connecting axle that is fixed with of bobbin one end, the connecting axle passes through in the drive chamber, and with the drive device mechanical connection in the drive chamber, in order to realize the synchronous rotation of the connecting axle of drive both sides, thereby realize the automatic function that the yarn, and because the bobbins on the two sides synchronously rotate, the tension stability is maintained in the yarn transmission, the drying box is fixed with a drying air-out mechanism, the air-out end of the drying air-out mechanism is positioned in the middle of the bobbins on the two sides, namely the position of the middle shaft of the yarn which is positioned in the spiral transmission, thereby the full blowing and drying can be carried out on the yarn which is positioned in the upper and lower parts in the transmission in real time, therefore, on one hand, the drying area and the drying efficiency are improved by the spiral automatic conveying, on the other hand, the drying effect is further improved by the air outlet end positioned at the spiral middle shaft position to facilitate the overall blowing drying towards the yarns, therefore, compared with the traditional yarn drying device, the yarn drying device has the advantages that through real-time automatic spiral transmission and real-time full blowing drying, so as to achieve the effect of further improving the drying efficiency and further improving the processing efficiency of spinning production.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram in the ventilation box according to the embodiment of the present invention.
In the figure: 1. a drying oven; 2. a wire inlet; 3. an outlet; 4. a yarn; 5. a bobbin; 51. a winding slot; 52. a connecting shaft; 6. a drive chamber; 7. a drive device; 71. a worm gear; 72. a worm; 73. a motor; 8. a drying air outlet mechanism; 81. a ventilation box; 811. a vent hole; 82. a heating coil; 83. a fan; 9. a first rotary joint; 10. a liquid inlet pipe; 11. a second rotary joint; 12. a liquid outlet pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present invention should have the ordinary meaning as understood by those having ordinary skill in the art to which the present disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
A drying device for flax and regenerated cellulose fiber blended colored spun yarn production is disclosed, as shown in figures 1 to 2, comprising a drying box 1, wherein the side wall of the same side of the drying box 1 is provided with a wire inlet 2 and a wire outlet 3 for conveying a yarn 4 in and out, two sides of the drying box 1 are symmetrically provided with bobbins 5, the bobbins 5 are provided with winding grooves 51 in a surrounding manner, the yarn 4 can sequentially pass through the winding grooves 51 at two sides to spirally surround the bobbins 5 at two sides, one side of the outside of the drying box 1 is fixed with a driving cavity 6, one end of each bobbin 5 is coaxially fixed with a connecting shaft 52, the connecting shaft 52 penetrates into the driving cavity 6, the driving cavity 6 is internally provided with a driving device 7, the driving device 7 and the connecting shaft 52 penetrate into one end of the driving cavity 6 to be mechanically connected for driving the connecting shafts 52 at two sides to synchronously rotate so as to drive the yarn 4 to be conveyed, the drying box 1 is fixed with a drying, and the air outlet end of the drying air outlet mechanism 8 is positioned in the middle of the bobbins 5 at the two sides and used for blowing and drying towards the yarns 4.
The utility model discloses a set up drying cabinet 1, drying cabinet 1 has seted up inlet 2 and outlet 3 on the same side lateral wall, be used for yarn 4 to convey the business turn over, bilateral symmetry is equipped with bobbin 5 in drying cabinet 1, the winding groove 51 is equipped with around bobbin 5, yarn 4 can be in proper order through the winding groove 51 of both sides, in order to be the heliciform around bobbin 5 on both sides, thereby in order to do benefit to yarn 4 of large area to wind and locate in drying cabinet 1, in order to dry through drying cabinet 1 simultaneously, drying cabinet 1 outside one side is fixed with drive chamber 6, bobbin 5 one end is coaxial to be fixed with connecting axle 52, connecting axle 52 runs through in drive chamber 6, and with drive arrangement 7 mechanical connection in drive chamber 6, in order to realize the synchronous rotation of connecting axle 52 of drive both sides, thereby realize the automatic function that drives yarn 4 conveying through drying cabinet 1 drying, and because bobbin 5 of both sides rotates synchronously, so as to be beneficial to maintaining stable tension in the transmission of the yarn 4, a drying air outlet mechanism 8 is fixed on the drying box 1, the air outlet end of the drying air outlet mechanism 8 is positioned in the middle of the bobbins 5 at the two sides, i.e. the position of the middle shaft of the yarn 4 which is spirally conveyed, thereby the yarn 4 which is arranged at the upper part and the lower part in the conveying can be completely dried by blowing in real time, therefore, on one hand, the drying area and the drying efficiency are improved by the spiral automatic conveying, on the other hand, the drying effect is further improved by the air outlet end positioned at the spiral middle shaft position to facilitate the overall blowing drying towards the yarns 4, thereby compared with the traditional yarn 4 drying device, through real-time automatic spiral transmission and real-time full blowing drying, so as to achieve the effect of further improving the drying efficiency and further improving the processing efficiency of spinning production.
The utility model discloses an in the embodiment, drive arrangement 7 is including worm wheel 71, worm 72, motor 73, and worm wheel 71 is coaxial to be fixed in the one end that connecting axle 52 penetrated in the drive chamber 6, and worm 72 and the worm wheel 71 intermeshing of both sides, motor 73 are fixed in one side in the drive chamber 6, and the output of motor 73 is coaxial to be fixed in worm 72 one end tip to can drive worm 72 and rotate, in order to realize driving the worm wheel 71 synchronous rotation of both sides.
In the embodiment of the present invention, the connecting shaft 52 and the bobbin 5 are both designed as a hollow structure, one end of the connecting shaft 52 penetrates through the worm wheel 71 and is connected to the first rotary joint 9, the first rotary joint 9 is externally connected to the liquid inlet pipe 10 to inject the heat-conducting liquid medium into the bobbin 5 while rotating, one end of the bobbin 5, which is far away from the connecting shaft 52, is connected to the second rotary joint 11, the second rotary joint 11 is externally connected to the liquid outlet pipe 12, the liquid outlet pipe 12 penetrates through the drying box 1 to rotate and simultaneously output liquid in a synchronous circulation manner, so as to circulate the heat-conducting liquid medium entering the bobbin 5 to conduct heat to the bobbin 5 in real time, thereby realizing the function of heating and drying the yarn 4 wound around the bobbin 5 in real time, and since the yarn 4 spirally winds around the bobbins 5 at both sides, so as to facilitate further increasing the direct contact area with the bobbin 5, thereby being beneficial to further improving the heating and drying efficiency.
In the embodiment of the present invention, the heat-conducting liquid medium is pure water, and can be heated circularly to realize continuous heat conduction to the bobbin 5.
In the embodiment of the present invention, the drying air-out mechanism 8 includes a ventilation box 81, a heating coil 82, and a fan 83, the ventilation box 81 is horizontally fixed in the drying box 1, and is located in the middle of the bobbins 5 on both sides, that is, in the middle axis position of the yarns 4 conveyed spirally, a plurality of air holes 811 are opened on the upper and lower end surfaces of the ventilation box 81 to respectively face the yarns 4 above and below, so as to perform full drying on the yarns 4 above and below in the conveyance, the heating coil 82 is located in the ventilation box 81, so as to be capable of being heated by power, the fan 83 is fixed on the outer side wall of the drying box 1, and the fan 83 is communicated with the ventilation box 81, so as to continuously introduce air into the ventilation box 81 through the fan 83, and form relatively dry hot air by heating the heating coil 82, the hot air is blown out through the air holes 811, The function of full-scale air drying.
In the embodiment of the present invention, the heating coil 82 is designed to have a serpentine shape in the horizontal direction, so as to further improve the heating efficiency.
The utility model discloses an in the embodiment, air vent 811 is provided with and is no less than 5 to do benefit to further promotion air-out area, thereby in order to do benefit to further promotion drying efficiency.
In the utility model discloses a flax and regenerated cellulose fiber blending drying device for spinning production, when using, through drying cabinet 1 with seted up inlet 2 and outlet 3 on the same side lateral wall, for yarn 4 conveys business turn over, both sides symmetry is equipped with bobbin 5 in drying cabinet 1, surround and be equipped with bobbin 51 on bobbin 5, yarn 4 is in order to be through the bobbin 51 of both sides, in order to be the heliciform around on the bobbin 5 of both sides, through the coaxial connecting axle 52 that is fixed with of one end of bobbin 5, connecting axle 52 runs through into drive chamber 6, and with drive arrangement 7 mechanical connection in the drive chamber 6, thereby with the synchronous rotation of the connecting axle 52 that can drive both sides, in order to drive bobbin 5 to rotate, in order to drive yarn 4 to convey through drying cabinet 1, through being fixed with dry air-out mechanism 8 on drying cabinet 1, and the air-out end of dry air-out mechanism 8 is located in the middle of the bobbin 5 of both sides, to completely blow and dry the yarns 4 at the upper and lower parts in the transmission, wherein the driving device 7 comprises a worm wheel 71, a worm 72 and a motor 73, the motor 73 can drive the worm 72 to rotate so as to drive the worm wheels 71 at the two sides to synchronously rotate, the connecting shaft 52 and the bobbin 5 are both designed to be hollow structures, the connecting shaft 52 is connected with a first rotary joint 9, the first rotary joint 9 is externally connected with a liquid inlet pipe 10 to inject a heat-conducting liquid medium into the bobbin 5, one end of the bobbin 5 far away from the connecting shaft 52 is connected with a second rotary joint 11, the second rotary joint 11 is externally connected with a liquid outlet pipe 12 to synchronously circulate liquid to heat and dry the yarns 4 surrounding the bobbin 5 in real time, the heat-conducting liquid medium is pure water, the drying air outlet mechanism 8 comprises a ventilation box 81, a heating coil 82 and a fan 83, and air is continuously introduced into the ventilation box 81 through the fan 83, and form relatively dry hot-air through heating coil 82 heating to lasting, the drying of blowing comprehensively to yarn 4, heating coil 82 designs for the horizontal direction serpentine bending form, so as to do benefit to further promotion heating efficiency, and air vent 811 is provided with and is no less than 5, so as to do benefit to further promotion air-out area, thereby so as to do benefit to further promotion drying efficiency.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. A flax and regenerated cellulose fiber blending drying device for spinning production, its characterized in that includes:
the drying box is provided with a wire inlet and a wire outlet on the side wall of the same side of the drying box and is used for conveying yarns in and out;
the bobbins are symmetrically arranged on two sides in the drying box, winding grooves are formed in the bobbins in a surrounding mode, and the yarns can sequentially pass through the winding grooves on the two sides to spirally surround the bobbins on the two sides;
the driving cavity is fixed at one side outside the drying box;
the connecting shaft is coaxially fixed at one end of the winding drum and penetrates into the driving cavity;
the driving device is arranged in the driving cavity, is mechanically connected with one end, penetrating into the driving cavity, of the connecting shaft, and is used for driving the connecting shafts on two sides to synchronously rotate so as to drive the yarns to be conveyed;
and the drying air-out mechanism is fixed on the drying box, and the air-out end of the drying air-out mechanism is positioned at the two sides of the middle of the winding reel and used for facing the yarn to be dried by blowing.
2. The drying device for flax and regenerated cellulose fiber blended colored spun yarn production as claimed in claim 1, wherein said driving device comprises a worm wheel, a worm and a motor, said worm wheel is coaxially fixed at one end of said connecting shaft penetrating into said driving cavity, said worm and said worm wheel at both sides are engaged with each other, said motor is fixed at one side of said driving cavity, and the output end of said motor is coaxially fixed at one end of said worm.
3. The drying device for flax and regenerated cellulose fiber blended colored spun yarn production as claimed in claim 2, wherein said connecting shaft and said bobbin are both designed as hollow structures, one end of said connecting shaft penetrates out of said worm gear and is connected with a first rotary joint, said first rotary joint is externally connected with a liquid inlet pipe for injecting heat-conducting liquid medium into said bobbin, one end of said bobbin far away from said connecting shaft is connected with a second rotary joint, said second rotary joint is externally connected with a liquid outlet pipe, said liquid outlet pipe penetrates out of said drying box for circulating liquid.
4. The drying device for flax and regenerated cellulose fiber blended colored spun yarn production as claimed in claim 3, wherein said heat-conducting liquid medium is purified water.
5. The drying device for producing the flax and regenerated cellulose fiber blended colored spun yarn according to claim 1, wherein the drying air outlet mechanism comprises a ventilation box, a heating coil and a fan, the ventilation box is horizontally fixed in the drying box and positioned in the middle of the bobbins at two sides, a plurality of air vents are formed in the upper end surface and the lower end surface of the ventilation box so as to respectively face the yarn upwards and downwards, the heating coil is arranged in the ventilation box and used for electrifying and heating, the fan is fixed on the outer side wall of the drying box, and the fan is communicated with the ventilation box and used for supplying air into the ventilation box.
6. The drying device for flax and regenerated cellulose fiber blended colored spun yarn production as claimed in claim 5, wherein said heating coil is designed to be serpentine in horizontal direction.
7. The drying device for flax and regenerated cellulose fiber blending colored spun yarn production according to claim 5, characterized in that, the air vent is provided with no less than 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021780096.5U CN212870592U (en) | 2020-08-24 | 2020-08-24 | Drying device is used in flax and regenerated cellulose fiber blending colored spun yarn production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021780096.5U CN212870592U (en) | 2020-08-24 | 2020-08-24 | Drying device is used in flax and regenerated cellulose fiber blending colored spun yarn production |
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| Publication Number | Publication Date |
|---|---|
| CN212870592U true CN212870592U (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021780096.5U Expired - Fee Related CN212870592U (en) | 2020-08-24 | 2020-08-24 | Drying device is used in flax and regenerated cellulose fiber blending colored spun yarn production |
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| CN (1) | CN212870592U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118168300A (en) * | 2024-02-28 | 2024-06-11 | 江苏海科纤维有限公司 | Terylene short fiber dryer |
-
2020
- 2020-08-24 CN CN202021780096.5U patent/CN212870592U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118168300A (en) * | 2024-02-28 | 2024-06-11 | 江苏海科纤维有限公司 | Terylene short fiber dryer |
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Granted publication date: 20210402 |