CN217418881U

CN217418881U - Anti-snagging high-density microfiber production equipment

Info

Publication number: CN217418881U
Application number: CN202220326302.8U
Authority: CN
Inventors: 张桂萍; 徐敏标; 杨更华; 张朱华; 沈小红
Original assignee: Zhejiang Hengchuang Advanced Functional Fiber Innovation Center Co ltd
Current assignee: Zhejiang Hengchuang Advanced Functional Fiber Innovation Center Co ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-09-13
Anticipated expiration: 2032-02-18

Abstract

The utility model provides an anti high density microfiber production facility that colludes silk relates to functional polyester fiber production technical field. The anti-snagging high-density microfiber production equipment comprises an equipment body, wherein the equipment body consists of a material supply layer, a spinning layer, an operation cavity and a winding machine arranged on the right side of the operation cavity from top to bottom. The utility model discloses, choose for use filter screen of 80/100 mesh filter sand collocation 800 meshes, the speed of stepping up is steady, through the cotton method of heat preservation of packing at the spinning case inside, improve the heat preservation ability, guarantee the invariant of temperature through heating pipe cooperation temperature sensor, shorten the calm zone height through the packing ring, shorten the fuse-element trickle at calm zone dwell time, improve spinning speed and production stability, adjust the fibrous height tied in a bundle through the second, the friction of silk bundle and air has been reduced, avoid causing the silk that wafts, the wool scheduling problem, through the bypass structure that sets up, in order to ensure the homogeneity of fuse-element dwell time in the fuse-element distributor.

Description

Anti-snagging high-density microfiber production equipment

Technical Field

The utility model relates to a functional polyester fiber production technical field specifically is anti high density microfiber production facility that colludes silk.

Background

The novel product of the anti-snagging high-density microfiber is a polyester semi-dull POY fiber with the specific specification of 40-45dtex/72F and the like, and the final fabric weave is a plain weave, so that the novel product is famous due to the advantages of being thinner in total fiber and monofilament, higher in fabric density, less prone to pilling, snagging, friction and the like compared with 50D/72F total fiber and monofilament. The novel product is firstly subjected to texturing by a texturing machine to prepare DTY, the DTY is mainly used for weaving in warp and weft directions of a water jet loom, the fabric mainly adopts Chunzai yarn, the fabric has the advantages of fine and smooth hand feeling, soft texture, easiness in washing and quick drying, good hygroscopicity, good waterproofness, tear resistance, friction resistance, stain resistance, heat preservation and the like, is novel in style and extremely wide in application field, and is mainly used for high-grade garment fabrics, such as various brands of down jackets, sportswear, casual clothes, men and women formal suits, bags, handbags and the like.

At present, the new product is scarce in the market due to the difficulties of low spinning yield, relatively high production consumption, high requirements on subsequent texturing and weaving and the like, and products produced by common production equipment and production processes cannot meet the use requirements of customers.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The not enough to prior art, the utility model provides an anti high density microfiber production facility of colluding silk has solved and has this anti high density microfiber new product market of colluding at present comparatively scarcely, and the product of general production facility and production technology output can't satisfy customer user demand's problem.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

the anti-snagging high-density microfiber production equipment comprises an equipment body, wherein the equipment body consists of a material supply layer, a spinning layer, an operation cavity and a winding machine arranged on the right side of the operation cavity from top to bottom; the heating screw extrusion pump and the booster pump are sequentially arranged on the inner lower wall of the feeding layer from right to left and used for heating and pressurizing feeding; a melt distributor disposed on an inner upper wall of the spinning layer; the spinning box is arranged on the inner lower wall of the spinning layer, the inner upper wall of the spinning box is fixedly connected with a metering pump, the metering pump penetrates through the upper wall of the spinning box through an inlet pipe, and one end, extending out of the spinning box, of the inlet pipe of the metering pump is fixedly connected with the outlet end of the melt distributor; the bypass structure and the filter box are arranged at the outlet end of the metering pump through the high-temperature resistant reversing valve and used for realizing maintenance without stopping the machine, and a first adjusting structure used for adjusting the height of a windless area is also arranged between the filter box and the high-temperature resistant reversing valve; the heat preservation assembly is arranged between the filter box and the spinning box and used for heat preservation and active heating; the filtering structure is arranged on the inner side wall of the filtering box and used for filtering the polyester melt and improving the pressure and the temperature, and a spinneret plate is fixedly connected to the lower wall of the inner side of the filtering box; the circular air-blowing cooler is fixedly connected to the upper wall of the inner side of the operation cavity and used for cooling the primary yarns in an air-blowing mode; the oil nozzle is fixedly connected to the rear wall of the inner side of the operation cavity and positioned below the circular blowing cooler, and a second adjusting structure for adjusting the height between the oil nozzle and the circular blowing cooler is arranged between the oil nozzle and the operation cavity; the wire guide, the pre-network device, the GR and the GR are arranged on the rear wall of the inner side of the working cavity and are positioned between the oil nozzle and the winding machine.

Preferably, heating screw extruder pump entrance point fixedly connected with inlet pipe, the inlet pipe is kept away from the one end of heating screw extruder pump and is produced four cauldron polymerization device fixed connection of polyester melt, heating screw extruder pump exit end and booster pump entrance point fixed connection, the booster pump exit end runs through the inside lower wall of feed layer and extends to spinning layer inside through outlet conduit, melt distributor entrance point stretches into spinning layer inside outlet conduit tip fixed connection with the booster pump.

Preferably, the bypass structure includes bypass pipe, collection box, bypass pipe fixed connection is at one of them exit end of two exit ends of high temperature resistant switching-over valve, the one end outer wall that high temperature resistant switching-over valve was kept away from to the bypass pipe runs through the spinning case lateral wall to going out, collection box fixed connection just is located the spinning case left side at the inboard lower wall in spinning layer, the bypass pipe stretches out the tip and the collection box fixed connection of spinning case.

Preferably, the front wall of the recycling bin is provided with a second visible window, the front wall of the spinning layer is provided with a first visible window, and the first visible window and the second visible window correspond to each other inside and outside.

Preferably, the first adjusting structure comprises an assembly catcher and a gasket, the gasket and the assembly catcher are sequentially and fixedly connected to the upper wall of the filter box from bottom to top, and one end, far away from the filter box, of the assembly catcher is fixedly connected with the other outlet end, far away from the bypass pipe, of the high-temperature-resistant reversing valve.

Preferably, the heat preservation subassembly includes heat preservation cotton, heating pipe, temperature sensor fixed connection is at the spinneret outer wall, the heating pipe sets up at the inboard lower wall of rose box and is located the spinneret outside, the cotton packing of heat preservation is between rose box outer wall and spinning box inside wall.

Preferably, filtration includes the filter screen, filters the sand, filter screen fixed connection just is located the spinneret top at the rose box inside wall, it packs at the rose box inside wall and is located the filter screen top to filter the sand.

Preferably, the structure is adjusted to the second includes mount, slider, fagging, adjusting bolt, mount fixed connection is behind the operation intracavity lateral wall, the mount overlooks the L type that the cross-section is the isometric both sides, an L limit inner wall that the operation chamber was kept away from to the mount is provided with waist type hole, the slider passes through screw and waist type hole and can dismantle the connection at the mount lateral wall, fagging fixed connection just is located the slider below at the mount lateral wall, adjusting bolt threaded connection is at the fagging inner wall, adjusting bolt runs through the fagging inner wall and extends to the downside, adjusting bolt is located the tip and the slider lower wall of fagging upside and supports tightly.

The utility model also provides a production technology of the high density microfiber of anti colluding silk, production technology includes following step:

s1, producing a polyester melt by a four-kettle polymerization reaction device, wherein the melt has the intrinsic viscosity of 0.640 +/-0.005 dl/g, and the spinning oil agent adopts TK-3588POY special volatilization resistant oil agent;

s2, pressurizing the polyester melt by a heating screw extrusion pump and a booster pump, then sending the polyester melt into a melt distributor, and sending the polyester melt into a spinning box after distribution;

s3, quantitatively pumping the melt entering the spinning box to a filter box by a metering pump, filtering by filter sand and a filter screen, heating, and spraying to form primary yarns by a spinneret plate, wherein the type of the filter sand is 80-100 meshes, the type of the filter screen is 800 meshes, the spinning box is subjected to heat preservation by heat preservation cotton and is actively heated by a temperature sensor and a heating pipe, and the temperature control range in the spinning box is 292 +/-0.5 ℃;

s4, carrying out air blowing cooling on the primary filaments through a circular air blowing cooler, and oiling the primary filaments through an oil nozzle, wherein the air temperature of the circular air blowing cooler is 22 +/-0.5 ℃, the air pressure is 18 +/-1 Pa, and the height of the oil nozzle from the outlet end of the circular air blowing cooler is 200 mm;

s5, guiding the oiled tows by a yarn guide device, carrying out networking by a pre-networking device, and sending the tows to a winding machine for winding and forming through GR1 and GR2, wherein the winding speed of the winding machine is 2600 m/min.

(III) advantageous effects

The utility model provides an anti high dense microfiber production facility that colludes silk. The method has the following beneficial effects:

1. the initial pressure of the assembly can be controlled to be about 17.5MPa by selecting 80/100-mesh filter sand and matching with 800-mesh filter screens, the pressure is stable, the pressure rise speed is stable, and the wire outlet condition is good.

2. The method of filling the heat-insulating cotton in the spinning box improves the heat-insulating capability and reduces the heat loss of the box body; in addition, the heating pipe is additionally arranged in the spinning box, and the heating pipe is matched with the temperature sensor to heat the inside of the spinning box in real time, so that the constant temperature is ensured, and the spinning stability of a new product is greatly improved.

3. The distance from the spinneret plate surface to the air outlet at the upper end of the circular air-blowing cooler is shortened by additionally arranging the gasket at the lower part of the assembly catcher, namely, the calm zone, and the spinneret plate surface is closer to the air outlet at the upper end of the circular air-blowing cooler after being modified, so that the calm zone distance is shorter than that of a conventional product, the residence time of melt trickle in the calm zone is shortened, and the spinning stability is further improved.

4. The distance adjustment between glib and the ring blast cooler lower extreme is 200mm through the second regulation structure, and fibrous height tied in a bundle has promptly reduced the friction of silk bundle with the air, avoids causing wafing silk, broken filament scheduling problem, and 200 mm's height can not lead to the silk bundle cooling not in place simultaneously, avoids causing product rerum natura index CV value big.

5. Through the bypass structure, the metering pump is not shut down when parts such as a spinneret plate and the like or common broken ends are replaced, the melt passage is changed into the recovery box through the reversing valve, so that the uniformity of the residence time of the melt in the melt distributor is ensured, the stability of the melt quality is further ensured, the stability of spinning is improved, the problem of bottom layer yarn quality fluctuation caused by operation is solved, and the melt recovered in the recovery box can be used as a recovered raw material to produce other tows.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1 according to the present invention;

FIG. 3 is a schematic side view of the fixing frame of the present invention;

FIG. 4 is a schematic view of the internal structure of the feeding layer of the present invention;

FIG. 5 is a schematic view of the internal structure of the spinning layer of the present invention;

FIG. 6 is a cross-sectional view of the internal structure of the spinning box of the present invention;

fig. 7 is a schematic view of the heating pipe structure of the present invention.

Wherein, 1, the equipment body; 2. a material supply layer; 3. a spinning layer; 4. a working chamber; 5. a circular air blow cooler; 6. a thread guide; 7. a pre-networking device; 8. GR 1; 9. GR 2; 10. a winding machine; 11. a feed pipe; 12. a fixed mount; 13. a slider; 14. a nozzle tip; 15. a supporting plate; 16. adjusting the bolt; 17. heating the screw extrusion pump; 18. a booster pump; 19. a melt distributor; 20. a spinning box; 21. a bypass pipe; 22. a recycling bin; 23. a second visual window; 24. a first visual window; 25. a metering pump; 26. a high temperature resistant reversing valve; 27. an assembly catcher; 28. a gasket; 29. a filter box; 30. filtering sand; 31. a filter screen; 32. a spinneret plate; 33. heating a tube; 34. a temperature sensor; 35. and (5) heat preservation cotton.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b):

as shown in fig. 1 to 7, an embodiment of the present invention provides an anti-snagging high-density microfiber production apparatus, which comprises an apparatus body 1, wherein the apparatus body 1 is composed of a material supply layer 2, a spinning layer 3, an operation chamber 4 and a winding machine 10 arranged on the right side of the operation chamber 4 from top to bottom;

the heating screw extrusion pump 17 and the booster pump 18 which are used for heating and pressurizing feeding are sequentially arranged on the lower wall of the inner side of the feeding layer 2 from right to left, the inlet end of the heating screw extrusion pump 17 is fixedly connected with the feeding pipe 11, one end, far away from the heating screw extrusion pump 17, of the feeding pipe 11 is fixedly connected with the four-kettle polymerization reaction device for producing polyester melt, the outlet end of the heating screw extrusion pump 17 is fixedly connected with the inlet end of the booster pump 18, and the outlet end of the booster pump 18 penetrates through the lower wall of the inner side of the feeding layer 2 through an outlet pipeline and extends to the interior of the spinning layer 3.

A melt distributor 19 arranged on the upper wall of the inner side of the spinning layer 3, wherein the inlet end of the melt distributor 19 is fixedly connected with the end part of an outlet pipeline of a booster pump 18 extending into the spinning layer 3.

The spinning box 20 is arranged on the lower wall of the inner side of the spinning layer 3, the upper wall of the inner side of the spinning box 20 is fixedly connected with a metering pump 25, the metering pump 25 penetrates through the upper wall of the spinning box 20 through an inlet pipe, and one end, extending out of the spinning box 20, of the inlet pipe of the metering pump 25 is fixedly connected with the outlet end of the melt distributor 19;

the bypass structure and the filter box 29 are arranged at the outlet end of the metering pump 25 through the high-temperature resistant reversing valve 26 and used for realizing non-stop maintenance, the bypass structure comprises a bypass pipe 21 and a recovery box 22, the bypass pipe 21 is fixedly connected at one of the two outlet ends of the high-temperature resistant reversing valve 26, the outer wall of one end of the bypass pipe 21, which is far away from the high-temperature resistant reversing valve 26, penetrates through the side wall of the spinning box 20 to go out, the recovery box 22 is fixedly connected with the lower wall of the inner side of the spinning layer 3 and is positioned at the left side of the spinning box 20, the end part of the bypass pipe 21, which extends out of the spinning box 20, is fixedly connected with the recovery box 22, and through the bypass structure, when parts such as a spinneret plate 32 and the like are overhauled or replaced, the melt in the metering pump 25 is guided into the recovery box 22 through the reversing valve 26, so as to ensure the uniformity of the residence time of the melt in the melt distributor 19, further ensure the stability of the melt quality and improve the stability of spinning, thereby solving the problem of quality fluctuation of the bottom layer silk caused by operation.

A first adjusting structure for adjusting the height of the calm zone is further arranged between the filter box 29 and the high-temperature resistant reversing valve 26, the first adjusting structure comprises an assembly connector 27 and a gasket 28, the gasket 28 and the assembly connector 27 are fixedly connected to the upper wall of the filter box 29 from bottom to top in sequence, one end of the assembly connector 27, which is far away from the filter box 29, is fixedly connected with the other end of the high-temperature resistant reversing valve 26, which is far away from the bypass pipe 21, through the addition of the gasket 28, the lower surface of the spinneret plate 32 can be closer to the upper end of the circular blowing cooler 5, the calm zone distance is shortened, the residence time of the melt trickle in the calm zone is shortened, and the spinning stability is further improved.

The heat preservation assembly is arranged between the filter box 29 and the spinning box 20 and used for heat preservation and active heating, the heat preservation assembly comprises heat preservation cotton 35, a heating pipe 33 and a temperature sensor 34, the temperature sensor 34 is fixedly connected to the outer wall of the spinneret plate 32, the heating pipe 33 is arranged on the lower wall of the inner side of the filter box 29 and is positioned on the outer side of the spinneret plate 32, the heat preservation cotton 35 is filled between the outer wall of the filter box 29 and the inner side wall of the spinning box 20, the heat preservation capability is improved and the heat loss of the box body is reduced by a method of filling the heat preservation cotton 35 in the spinning box 20; in addition, through install heating pipe 33 additional in spinning case 20 inside, cooperate temperature sensor 34 to the inside real-time heating of spinning case 20, guarantee the invariant of temperature, improved the spinning stability of new product greatly.

The filter structure is arranged on the inner side wall of the filter box 29 and used for filtering polyester melt and improving pressure and temperature, and comprises a filter screen 31 and filter sand 30, the filter screen 31 is fixedly connected to the inner side wall of the filter box 29 and located above the spinneret plate 32, the filter sand 30 is filled in the inner side wall of the filter box 29 and located above the filter screen 31, the filter sand 30 passing through 80/100 meshes is matched with the filter screen 31 of 800 meshes, the initial pressure is controlled to be about 17.5Mpa, the pressure is stable, the pressure-increasing speed is stable, and the filament output condition of the assembly is good.

A spinneret plate 32 is fixedly connected with the lower wall of the inner side of the filter box 29; and the circular air-blowing cooler 5 is fixedly connected to the upper wall of the inner side of the operation cavity 4 and used for cooling the primary yarns in an air-blowing mode.

A nozzle 14 fixedly connected to the rear wall of the inner side of the working chamber 4 and located below the circular air-blowing cooler 5, a second adjusting structure for adjusting the height between the nozzle 14 and the working chamber 4 is further arranged between the nozzle 14 and the working chamber 4, the second adjusting structure comprises a fixing frame 12, a sliding block 13, a supporting plate 15 and an adjusting bolt 16, the fixing frame 12 is fixedly connected to the rear side wall of the working chamber 4, the overlooking cross section of the fixing frame 12 is in an L shape with two equal sides, a waist-shaped hole is arranged on the inner wall of the L side of the fixing frame 12 far away from the working chamber 4, the sliding block 13 is detachably connected to the side wall of the fixing frame 12 through a screw and the waist-shaped hole, the supporting plate 15 is fixedly connected to the side wall of the fixing frame 12 and located below the sliding block 13, the adjusting bolt 16 is in threaded connection with the inner wall of the supporting plate 15, the adjusting bolt 16 penetrates through the inner wall of the supporting plate 15 and extends to the upper side, the end part of the adjusting bolt 16 located at the upper side of the lower wall 15 is tightly abutted against the sliding block 13, the height of the nozzle tip 14 can be adjusted by turning the adjustment bolt 16.

The yarn guide 6, the pre-net device 7, the GR18 and the GR29 are arranged on the inner rear wall of the working cavity 4 and are positioned between the oil nozzle 14 and the winding machine 10.

The front wall of the recycling box 22 is provided with a second visible window 23, the front wall of the spinning layer 3 is provided with a first visible window 24, the first visible window 24 and the second visible window 23 correspond to each other inside and outside, and the memory condition of the recycling box 22 can be observed through the second visible window 23 and the first visible window 24.

s1, producing a polyester melt by a four-kettle polymerization reaction device, wherein the melt intrinsic viscosity is 0.640 +/-0.005 dl/g, and the spinning oil agent is TK-3588POY special volatilization resistant oil agent;

s2, pressurizing the polyester melt by a heating screw extrusion pump 17 and a booster pump 18, then sending the polyester melt into a melt distributor 19, and sending the polyester melt into a spinning box 20 after distribution;

s3, quantitatively pumping the melt entering the spinning box 20 to a filter box 29 by a metering pump 25, filtering by filter sand 30 and a filter screen 31, heating, spraying to form a primary yarn by a spinneret plate 32, wherein the type of the filter sand 30 is 80-100 meshes, the type of the filter screen 31 is 800 meshes, the spinning box 20 is insulated by insulation cotton 35 and actively heated by a temperature sensor 34 and a heating pipe 33, and the temperature control range in the spinning box 20 is 292 +/-0.5 ℃;

s4, carrying out air blowing cooling on the primary filaments through the circular air blowing cooler 5, and oiling the primary filaments through the oil nozzle 14, wherein the air temperature of the circular air blowing cooler 5 is 22 +/-0.5 ℃, the air pressure is 18 +/-1 Pa, and the height of the oil nozzle 14 from the outlet end of the circular air blowing cooler 5 is 200 mm;

s5, guiding the oiled tows by a yarn guide 6, carrying out networking by a pre-networking device 7, and sending the tows to a winding machine 10 for winding and forming by GR18 and GR29, wherein the winding speed of the winding machine 10 is 2600 m/min.

The utility model discloses, to this product production technology and product property ability test, the contrast result is as shown in following table 1, table 2:

TABLE 1 comparison of the influence of the height of the oil frame on the fly and wool

TABLE 2 comparison of the effects of spinning speed on end breaks and key physical properties

As can be seen from the tables 1 and 2, the indexes of the snagging-resistant high-density microfiber are obviously superior to those of tows produced by the conventional equipment process.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Anti high dense microfiber production facility that colludes silk, its characterized in that: the spinning device comprises an equipment body (1), wherein the equipment body (1) consists of a material supply layer (2), a spinning layer (3), an operation cavity (4) and a winding machine (10) arranged on the right side of the operation cavity (4) from top to bottom;

a heating screw extrusion pump (17) and a booster pump (18) which are arranged on the inner lower wall of the material supply layer (2) from right to left in sequence and used for heating and pressurizing the material supply;

a melt distributor (19) arranged on the inner upper wall of the spinning layer (3);

the spinning box (20) is arranged on the lower wall of the inner side of the spinning layer (3), the upper wall of the inner side of the spinning box (20) is fixedly connected with a metering pump (25), the metering pump (25) penetrates through the upper wall of the spinning box (20) through an inlet pipe, and one end, extending out of the spinning box (20), of the inlet pipe of the metering pump (25) is fixedly connected with the outlet end of the melt distributor (19);

the bypass structure and the filter box (29) are arranged at the outlet end of the metering pump (25) through a high-temperature-resistant reversing valve (26) and used for realizing maintenance without stopping, and a first adjusting structure used for adjusting the height of a calm zone is further arranged between the filter box (29) and the high-temperature-resistant reversing valve (26);

the heat preservation assembly is arranged between the filter box (29) and the spinning box (20) and is used for heat preservation and active heating;

the filtering structure is arranged on the inner side wall of the filtering box (29) and is used for filtering the polyester melt and improving the pressure and the temperature, and a spinneret plate (32) is fixedly connected to the lower wall of the inner side of the filtering box (29);

a circular air-blowing cooler (5) fixedly connected to the upper wall of the inner side of the operation cavity (4) and used for cooling the primary yarns by air-blowing;

the oil nozzle (14) is fixedly connected to the rear wall of the inner side of the operation cavity (4) and located below the circular blowing cooler (5), and a second adjusting structure used for adjusting the height between the oil nozzle (14) and the circular blowing cooler (5) is further arranged between the oil nozzle (14) and the operation cavity (4);

the yarn guide device (6), the pre-net device (7), the GR1(8) and the GR2(9) are arranged on the inner rear wall of the operation cavity (4) and are positioned between the oil nozzle (14) and the winding machine (10);

the first adjusting structure comprises an assembly connecting handle (27) and a gasket (28), the gasket (28) and the assembly connecting handle (27) are sequentially and fixedly connected to the upper wall of the filter box (29) from bottom to top, and one end, far away from the filter box (29), of the assembly connecting handle (27) is fixedly connected with the other outlet end, far away from the bypass pipe (21), of the high-temperature-resistant reversing valve (26).

2. The snag-resistant high density microfiber production apparatus of claim 1, wherein: heating screw extrusion pump (17) inlet end fixedly connected with inlet pipe (11), inlet pipe (11) are kept away from the one end of heating screw extrusion pump (17) and are produced four cauldron polymerization device fixed connection of polyester melt, heating screw extrusion pump (17) exit end and booster pump (18) inlet end fixed connection, booster pump (18) exit end runs through confession bed (2) inboard lower wall through outlet conduit and extends to inside spinning layer (3), fuse-element distributor (19) entrance point stretches into the inside outlet conduit tip fixed connection of spinning layer (3) with booster pump (18).

3. The snag-resistant high density microfiber production apparatus of claim 2, wherein: the bypass structure includes bypass pipe (21), collection box (22), bypass pipe (21) fixed connection is at one of them exit end of two exit ends of high temperature resistant switching-over valve (26), the one end outer wall that high temperature resistant switching-over valve (26) were kept away from in bypass pipe (21) runs through spinning box (20) lateral wall to going out, collection box (22) fixed connection just is located spinning box (20) left side at spinning layer (3) inboard lower wall, bypass pipe (21) stretch out the tip and the collection box (22) fixed connection of spinning box (20).

4. The snag-resistant high density microfiber production apparatus of claim 3, wherein: the recycling bin (22) front wall is provided with a second visual window (23), the spinning layer (3) front wall is provided with a first visual window (24), and the first visual window (24) is corresponding to the second visual window (23) inside and outside.