CN213624487U - Double filtration formula non-woven fabrics fuse-element extruder - Google Patents

Abstract

The utility model relates to a double filtration formula non-woven fabrics fuse-element extruder relates to fuse-element extruder equipment field, and it includes engine body shell, be formed with the fuse-element chamber in the engine body shell, be provided with in the fuse-element chamber and push away the material screw rod, it is connected with driving motor to push away the material screw rod, engine body shell's one end is provided with ejection of compact die head, the one end that ejection of compact die head was kept away from to engine body shell is provided with the feed inlet, feed inlet department is provided with the feeding case, feeding case department is provided with and is used for carrying out filterable one-level filter equipment to the raw materials, ejection of. The method has the effect of effectively reducing the impurity content of the melt extruded from the discharging die head finally, thereby effectively improving the quality of the final finished product.

Description

Double filtration formula non-woven fabrics fuse-element extruder

Technical Field

The application relates to a melt extruder equipment field especially relates to a double filtration formula non-woven fabrics melt extruder.

Background

Nonwoven fabrics are known by the generic name nonwoven fabrics, or may be referred to as nonwoven fabrics. The non-woven fabric is a fabric formed without spinning woven fabric, and is mainly formed by forming a fiber web structure by directionally or randomly arranging textile short fibers or filaments and then reinforcing the fiber web structure by adopting a mechanical method, a thermal bonding method or a chemical method. The non-woven fabric breaks through the traditional spinning principle and has the characteristics of short process flow, high production speed, high yield, low cost, wide application, multiple raw material sources and the like.

In the related art, in the production of the nonwoven fabric, a raw material such as polypropylene is first melted and extruded through a dedicated die.

In view of the above-mentioned related art, the inventors consider that in the course of actual use, certain impurities such as carbides, dust, agglomerated particles, crystal points, metal powder, and the like are always present in the raw material in the course of melting the raw material. In the process of extruding the molten raw materials, impurities in the melt not only can damage the metering pump, but also can influence the quality of the product and prevent normal production, and the impurities can easily cause the molten raw materials to break in the production process.

SUMMERY OF THE UTILITY MODEL

Thereby raw and other materials in order to solve among the current melt extruder equipment still have more impurity to lead to the relatively poor problem of finished product quality, this application provides a double filtration formula non-woven fabrics melt extruder.

The application provides a pair of double filtration formula non-woven fabrics melt extruder adopts following technical scheme:

the utility model provides a double filtration formula non-woven fabrics fuse-element extruder, includes engine body shell, be formed with the fuse-element chamber in the engine body shell, be provided with in the fuse-element chamber and push away the material screw rod, it is connected with driving motor to push away the material screw rod, engine body shell's one end is provided with ejection of compact die head, the one end that ejection of compact die head was kept away from to engine body shell is provided with the feed inlet, feed inlet department is provided with the feed box, feed box department is provided with and is used for carrying out filterable one-level filter equipment to the raw materials, ejection of.

Through adopting above-mentioned technical scheme, the one-level filter equipment can filter the partial impurity that exists in the solid-state raw materials in the feeding incasement, and the second grade filter equipment is used for filtering the fluid form raw materials after the melting, through twice filtration, can effectively reduce the final impurity content of the fuse-element of extruding from ejection of compact die head to effectively improve final finished product quality.

Preferably, be provided with the raw materials master batch in the feeding case, one-level filter equipment is including setting up air intake and the air outlet on the feeding case, the air intake is located the lower extreme of feeding case, the air outlet is located the upper end of feeding case, air intake connection has the air-supply line, the air outlet is connected with out the tuber pipe, the other end of air-supply line is connected with the air-blower, air outlet department is provided with the one-level filter screen, the aperture of one-level filter screen is less than the diameter of raw materials master batch.

Through adopting above-mentioned technical scheme, the air-blower passes through the air-supply line and to air intake department blast air, the raw materials master batch in the feeding incasement receives the air of air intake department and stirs the back, its inside lighter granule impurity is blown by the air current, and along with the air current passes through the air outlet, when through the air outlet, because the aperture of one-level filter screen is less than the diameter of raw materials master batch, so the raw materials master batch still can be retained in the feeding case, and less granule impurity then passes one-level filter screen to the feeding incasement outside in the air current, from this the getting rid of impurity in the raw materials master batch in the feeding incasement has been.

Preferably, the air inlet is provided with a plurality of along the circumference of the feeding box, the air inlet pipe is provided with a plurality of corresponding to the air inlet, the periphery of the feeding box is also provided with an air inlet ring pipe, one end of each air inlet pipe, which is far away from the feeding box, is connected with the air inlet ring pipe, and the air blower is communicated with the air inlet ring pipe through an air inlet extension pipe.

Through adopting above-mentioned technical scheme, through setting up a plurality of air intakes, can be so that the raw materials master batch to the feed box is stirred to the air current that blows out in the air-blower fully to make the tiny particle that contains in the raw materials granule blow up and mix to the air in by abundant, improved the filter effect. The produced air current of air-blower reaches air inlet ring canal department through the air inlet extension pipe, reaches each air inlet department through the air inlet ring canal again, and the air inlet ring canal can make the air current become more even to make the air current from each air inlet department tend to unanimous, let the raw materials master batch of bottom each department in the feeding box all can obtain abundant and even stirring.

Preferably, an electric heating wire is arranged in the air inlet extension pipe, a flexible baffle is arranged at each air inlet, and the flexible baffles are fixedly connected with the edge of the air inlet close to the top of the feeding box.

Through adopting above-mentioned technical scheme, the air that blows to in the feeding case can be heated up in the setting of electric heating wire, with the evaporation of water that exists in the raw materials master batch and take out from the air outlet to play certain drying effect to the raw materials master batch, thereby effectively improve product quality. The setting of flexible baffle can effectively reduce the raw materials master batch in the feed box and flow back to the condition emergence in the air-intake pipe, and when the air-blower started simultaneously, the air current can be washed flexible baffle and is stirred the raw materials master batch in the feed box.

Preferably, the air outlet pipe is provided with a buffer tank at the end far away from the air outlet, a secondary filter screen is arranged on the side face of the buffer tank, and the filter screen aperture of the secondary filter screen is smaller than the filter screen aperture of the primary filter screen.

Through adopting above-mentioned technical scheme, impurity in the feed box is blown to the air outlet when locating, impurity continues to reach baffle-box department along with the air current, because the inside space of baffle-box is great, its velocity of flow can reduce after the air current enters into the baffle-box, the great impurity of partial quality can't be continued to be driven by the air current of low speed and drop to the baffle-box in the air current, the baffle-box can be collected the impurity in the air current, the setting of secondary filter screen also can further keep off partial impurity down and stay in the baffle-box simultaneously, the condition that effectively reduced too much impurity diffusion to in the production environment takes place.

Preferably, the secondary filtering device comprises a material feeding box, a material feeding channel is arranged in the material feeding box, the material feeding channel comprises a first main flow channel, the first main flow channel is communicated with the tail end of the molten bath cavity, a first branch flow channel and a second branch flow channel are formed by branching of the first main flow channel, the first branch flow channel and the second branch flow channel are converged to form a second main flow channel, and the second main flow channel is communicated with the discharging die head;

walk and insert in the workbin and be provided with first filter body and second filter body, first filter body passes first runner setting, the second filter body passes second runner setting, the upper surface of walking the workbin is connected with the mounting panel through a plurality of screw rods, be provided with first actuating cylinder and the second actuating cylinder of driving on the mounting panel, the first output that drives actuating cylinder is connected with first filter body, the second drives actuating cylinder's output and is connected with the second filter body.

Through adopting above-mentioned technical scheme, have some impurity not got rid of by one-level filter equipment, just can be along with raw materials master batch together enter into the fuse-element intracavity to together form the fuse-element and carry out the ejection of compact through ejection of compact die head along with the raw materials master batch. The feeding box is provided with a first filter body and a second filter body, impurities in the melt can be physically filtered, the melt firstly passes through the first main runner, then respectively enters the first branch runner and the second branch runner, and respectively filters through the first filter body and the second filter body, the filtered melt is converged into the second main runner through the first branch runner and the second branch runner, and finally discharged through the discharge die head.

After the first filter body and the second filter body are used for a long time, excessive impurities may exist on the surfaces of the first filter body and the second filter body, so that the pressure during melt extrusion is too high, the melt extrusion is difficult, and the first filter body and the second filter body need to be cleaned regularly. When needs clear up first filter, the accessible drives actuating cylinder and pushes out first filter from walking the workbin, and the staff can clear up the filtering part of first filter, and first filter pushes out the back, and the second is a runner can supply the fuse-element to pass through, so when the clearance of carrying out first filter, need not to shut down equipment wholly, and then improved holistic work efficiency. After the cleaning is finished, the first filter body is retracted into the material walking box through the first driving cylinder. The cleaning process of the second filtering body is the same as that of the first filtering body. Through the setting of second grade filter equipment, can carry out effectual clearance to the impurity in the fuse-element, also can carry out timely clearance to first filter body and second filter body under the circumstances of not shutting down simultaneously to realize the long-time steady operation of second grade filter equipment.

Preferably, the first filter body is the same as the second filter body in structure, the first filter body is cylindrical and comprises a first-stage fixed section, a filter section and a second-stage fixed section, the first-stage fixed section is fixedly connected with the first output end of the driving cylinder, the filter section comprises a plurality of connecting rods, two ends of each connecting rod are respectively connected with the first-stage fixed section and the second-stage fixed section, the connecting rods are circumferentially arranged at the edge of the end face of the first-stage fixed section, and the filter structure is detachably arranged on the outer side of each connecting rod.

Through adopting above-mentioned technical scheme, filter section department is provided with the connecting rod, can realize the connection of one-level canned paragraph and second grade canned paragraph, and filter section department can supply the fuse-element to pass simultaneously, and the filtration sets up in filter section department, and the filtration is detachable, can be convenient for the staff to dismantle the filtration to work such as wash or change.

Preferably, the first filter body and the second filter body are arranged vertically, the filter structure comprises two curved surface filter screens with semicircular cross sections, fixing short columns are arranged on the connecting rods, the surfaces of the curved surface filter screens are attached to the outer surfaces of the connecting rods, and the fixing short columns are inserted into meshes arranged in the curved surface filter screens.

Through adopting above-mentioned technical scheme, the mesh of fixed short column and curved surface filter screen cooperatees, can realize the simple quick installation of curved surface filter screen, first filter body and second filter the body and be vertical setting, so when carrying out the installation of curved surface filter screen, need not to fix the curved surface filter screen completely, only need with the curved surface filter screen pass fixed short column place can, in the filtering process, the curved surface filter screen receives the pressure that comes from the fuse-element flow and can realize fixing in the workbin of walking, thereby make the installation of curved surface filter screen dismantle all comparatively convenient quick.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the primary filtering device, the effect of filtering impurities in the raw material master batches can be achieved;

2. through the setting of second grade filter equipment, can play the effect of filtering the impurity in the fuse-element.

Drawings

Fig. 1 is a schematic view of the overall structure of a double-filtration nonwoven melt extruder according to an embodiment of the present application.

Fig. 2 is a schematic sectional view in the direction of a-a in fig. 1.

Fig. 3 is an enlarged schematic view of the portion C in fig. 2.

Fig. 4 is a schematic sectional view in the direction B-B in fig. 1.

Fig. 5 is an enlarged schematic view of a portion D in fig. 4.

Reference number specification, 1, body shell; 11. a melt chamber; 12. a feed inlet; 2. a pushing screw; 3. a discharge die head; 4. a feeding box; 5. a primary filtration device; 51. an air inlet; 511. a flexible baffle; 52. an air outlet; 53. an air inlet pipe; 54. an air outlet pipe; 541. a buffer tank; 542. a secondary filter screen; 55. a blower; 56. a first-stage filter screen; 57. an air inlet ring pipe; 58. an air inlet extension pipe; 581. an electric heating wire; 6. a secondary filtration device; 61. a material box is moved; 62. a feeding channel; 621. a first main flow passage; 622. a first branch flow channel; 623. a second branch flow channel; 624. a second main flow passage; 63. a first filter body; 631. a primary fixed section; 632. a secondary fixed section; 64. a second filter body; 65. mounting a plate; 66. a first driving cylinder; 67. a second driving cylinder; 7. a filtration section; 71. a connecting rod; 711. a fixed short column; 72. a filter structure; 721. curved surface filter screen.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses double filtration formula non-woven fabrics melt extruder. Referring to fig. 1, the double-filtration type non-woven fabric melt extruder comprises a machine body shell 1, a melt cavity 11 for melt to pass through is arranged in the machine body shell 1, a material pushing screw rod 2 is arranged in the melt cavity 11, and the material pushing screw rod 2 is connected with a driving motor. One end of the machine body shell 1 is provided with a feeding hole 12, the feeding hole 12 is communicated with the interior of the melt cavity 11, a feeding box 4 is connected and arranged above the feeding hole 12, raw material master batches are placed in the feeding box 4, and the other end of the machine body shell 1 is connected and provided with a discharging die head 3. The double-filtration type non-woven fabric melt extruder comprises a primary filtering device 5 and a secondary filtering device 6. When the raw material master batches in the feeding box reach the melt cavity 11, the raw material master batches are extruded and self-rubbed by the pushing screw rod 2 to generate high-temperature melt which is melted into a fluid, and finally the melt flows out through the discharging die head 3.

Referring to fig. 2 and 3, the first-stage filtering device 5 is disposed at the feeding box 4, the first-stage filtering device 5 includes an air inlet 51 and an air outlet 52 disposed on the feeding box 4, the air inlet 51 is disposed with a plurality of along the circumferential direction of the feeding box 4, each air inlet 51 is connected with an air inlet pipe 53, the periphery of the feeding box 4 is provided with an air inlet ring pipe 57, one end of each air inlet pipe 53 far away from the feeding box 4 is connected with the air inlet ring pipe 57, an air inlet extension pipe 58 is further connected to the air inlet ring pipe 57, and one end of the air inlet extension pipe 58 far away from the air inlet ring pipe 57 is connected. The air current that the air-blower 55 produced reaches air inlet ring pipe 57 department through air inlet extension pipe 58, reaches each air intake 51 department through air inlet ring pipe 57 again, and air inlet ring pipe 57 can make the air current become more even to make the air current from each air intake 51 department tend to unanimous, let the raw materials master batch of bottom each department in feed box 4 all can obtain abundant and even stirring. An electric heating wire 581 is arranged in the air inlet extension pipe 58, and the electric heating wire 581 is used for heating the air flow entering the feeding box 4 through the blower 55. Each air inlet 51 is also provided with a flexible baffle 511, the flexible baffle 511 is positioned in the feeding box 4, and each flexible baffle 511 is fixedly connected with the edge of the air inlet 51 close to the top of the feeding box 4. The arrangement of the flexible baffle 511 can effectively reduce the occurrence of the situation that the raw material master batches in the feeding box 4 flow back into the air inlet pipe 53, and meanwhile, when the air blower 55 is started, the air flow can rush through the flexible baffle 511 to stir the raw material master batches in the feeding box 4.

Referring to fig. 2 and 3, the air outlet 52 is arranged at the upper end of the feeding box 4, the air outlet 52 is connected with an air outlet pipe 54, the air outlet 52 is provided with a first-stage filter screen 56, the diameter of the filter screen of the first-stage filter screen 56 is smaller than that of the raw material master batch, the tail end of the air outlet 52 far away from the air outlet 52 is provided with a buffer box 541, a second-stage filter screen 542 is arranged on the side surface of the buffer box 541, and the diameter of the second-stage filter screen 542 is smaller than that of.

Referring to fig. 4 and 5, the secondary filtering device 6 is disposed at a joint of the discharging die head 3 and the machine body housing 1, the secondary filtering device 6 includes a feeding box 61, a feeding channel 62 is disposed in the feeding box 61, and a first filtering body 63 and a second filtering body 64 having the same structure are vertically inserted into the feeding box 61. The first filter 63 and the second filter 64 are used for filtering the melt and blocking impurities in the melt on the first filter 63 and the second filter 64. First filter 63 is cylindricly, and including one-level canned paragraph 631, fillter section 7 and second grade canned paragraph 632, fillter section 7 includes a plurality of connecting rods 71, the both ends of connecting rod 71 are connected with one-level canned paragraph 631 and second grade canned paragraph 632 respectively, each connecting rod 71 circumference sets up the border department at one-level canned paragraph 631 terminal surface, the outside of connecting rod 71 can be dismantled and is provided with filtration 72, filtration 72 includes that two cross-sections are semicircular curved surface filter screen 721, be provided with stub 711 on the connecting rod 71, the surface of curved surface filter screen 721 laminates with the surface of each connecting rod 71 mutually, stub 711 inserts and sets up in the mesh hole of curved surface filter screen 721. The mesh of fixed short column 711 and curved surface filter screen 721 cooperatees, can realize the simple quick installation of curved surface filter screen 721, first filter 63 and second filter 64 are vertical setting, so when carrying out the installation of curved surface filter screen 721, need not to fix curved surface filter screen 721 completely, only need with curved surface filter screen 721 pass fixed short column 711 place can, in filtering process, curved surface filter screen 721 receives the pressure that comes from the fuse-element flow can realize walking the fixed in workbin 61, thereby make curved surface filter screen 721's installation dismantle all comparatively convenient quick.

Referring to fig. 4 and 5, the feeding channel 62 includes a first main channel 621, the first main channel 621 is communicated with the end of the melt chamber 11, the first main channel 621 is bifurcated to form a first branch channel 622 and a second branch channel 623, the first branch channel 622 and the second branch channel 623 are joined to form a second main channel 624, the second main channel 624 is communicated with the discharge die head 3, the first filter 63 passes through the first branch channel 622, the second filter 64 passes through the second branch channel 623, the upper surface of the feeding box 61 is connected with a mounting plate 65 through a plurality of screws, the mounting plate 65 is provided with a first driving cylinder 66 and a second driving cylinder 67, an output end of the first driving cylinder 66 is connected with a primary fixing section 631 of the first filter 63, and an output end of the second driving cylinder 67 is connected with a primary fixing section 631 of the second filter 64.

The implementation principle of the double-filtration type non-woven fabric melt extruder in the embodiment of the application is as follows: the primary filtering device 5 can filter part of impurities existing in solid raw materials in the feeding box 4, the secondary filtering device 6 is used for filtering the fused fluid raw materials, and the impurity content of the melt extruded from the discharging die head 3 can be effectively reduced through twice filtering, so that the quality of the final finished product is effectively improved.

Air blower 55 blows air to air inlet 51 through air inlet pipe 53, the raw material master batch in feeding box 4 receives the air of air inlet 51 department to stir the back, its inside lighter granule impurity is blown by the air current, and along with the air current passes through air outlet 52, when passing through air outlet 52, because the aperture of one-level filter screen 56 is less than the diameter of raw material master batch, so the raw material master batch still can remain in feeding box 4, and less granule impurity in the air current then passes one-level filter screen 56 to feeding box 4 outside, realized getting rid of impurity in the raw material master batch in feeding box 4 from this, the purity and the quality of raw materials have been improved. The plurality of air inlets 51 are provided so that the master batch in the feed box 4 can be sufficiently agitated. The electric heating wire 581 is arranged to heat the air blown into the feeding box 4, evaporate the water in the raw material master batch and take the water out of the air outlet 52, so that the raw material master batch is dried to a certain extent, and the product quality is effectively improved.

When impurity in feeding case 4 is blown to air outlet 52 department, impurity continues to reach baffle-box 541 along with the air current, because the inside space of baffle-box 541 is great, its velocity of flow can reduce after the air current enters into baffle-box 541, the great impurity of part quality can't be continued to be driven by the air current of low speed and drop to in the baffle-box 541 in the air current, baffle-box 541 can collect the impurity in the air current, setting up of secondary filter screen 542 also can further keep off some impurity down and stay in baffle-box 541, the condition that has effectively reduced too much impurity diffusion to production environment takes place.

The first filtering body 63 and the second filtering body 64 are arranged in the material walking box 61, impurities in the melt can be physically filtered, the melt firstly passes through the first main flow passage 621, then respectively enters the first branch flow passage 622 and the second branch flow passage 623, and is respectively filtered by the first filtering body 63 and the second filtering body 64, the filtered melt is converged into the second main flow passage 624 by the first branch flow passage 622 and the second branch flow passage 623, and finally is discharged by the discharging die head 3.

After long-term use, in order to reduce the condition that melt extrusion pressure is too big, need clear up first filter 63 and second filter 64, when needing to clear up first filter 63, the accessible drives actuating cylinder 66 and releases first filter 63 from walking workbin 61, and the staff can clear up the filtering part of first filter 63, and after first filter 63 released, second branch runner 623 can supply the fuse-element to pass through, so when carrying out the clearance of first filter 63, need not to shut down the whole equipment, and then improved holistic work efficiency. After cleaning, the first filter 63 is retracted into the material feeding box 61 by the first driving cylinder 66. The cleaning process of the second filter body 64 is the same as that of the first filter body 63. Through the setting of second grade filter equipment 6, can carry out effectual clearance to the impurity in the fuse-element, also can carry out timely clearance to first filter 63 and second filter 64 under the circumstances of not shutting down simultaneously to realize the long-time steady operation of second grade filter equipment 6.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a double filtration formula non-woven fabrics melt-extrusion machine, includes engine body shell (1), be formed with melt chamber (11) in engine body shell (1), be provided with in melt chamber (11) and push away material screw rod (2), it is connected with driving motor to push away material screw rod (2), the one end of engine body shell (1) is provided with ejection of compact die head (3), the one end that ejection of compact die head (3) were kept away from in engine body shell (1) is provided with feed inlet (12), feed inlet (12) department is provided with feeding case (4), its characterized in that: the feeding box (4) is provided with a primary filtering device (5) for filtering the raw materials, and the discharging die head (3) is provided with a secondary filtering device (6) for filtering the melt.

2. The double-filtration nonwoven melt extruder of claim 1, wherein: be provided with the raw materials master batch in feeding case (4), one-level filter equipment (5) are including setting up air intake (51) and air outlet (52) on feeding case (4), air intake (51) are located the lower extreme of feeding case (4), air outlet (52) are located the upper end of feeding case (4), air intake (51) are connected with air-supply line (53), air outlet (52) are connected with out tuber pipe (54), the other end of air-supply line (53) is connected with air-blower (55), air outlet (52) department is provided with one-level filter screen (56), the aperture of one-level filter screen (56) is less than the diameter of raw materials master batch.

3. A double-filtration nonwoven melt extruder according to claim 2, wherein: the air inlet (51) is provided with a plurality of air inlets along the circumferential direction of the feeding box (4), the air inlet pipe (53) is provided with a plurality of air inlets (51) correspondingly, the periphery of the feeding box (4) is also provided with an air inlet ring pipe (57), one end of each air inlet pipe (53) far away from the feeding box (4) is connected with the air inlet ring pipe (57), and the air blower (55) is communicated with the air inlet ring pipe (57) through an air inlet extension pipe (58).

4. A double-filtration nonwoven melt extruder according to claim 3, wherein: an electric heating wire (581) is arranged in the air inlet extension pipe (58), a flexible baffle (511) is arranged at each air inlet (51), and the flexible baffle (511) is fixedly connected with the edge of the air inlet (51) close to the top of the feeding box (4).

5. A double-filtration nonwoven melt extruder according to claim 2, wherein: the tail end of the air outlet pipe (54) far away from the air outlet (52) is provided with a buffer box (541), the side face of the buffer box (541) is provided with a secondary filter screen (542), and the filter screen pore diameter of the secondary filter screen (542) is smaller than that of the primary filter screen (56).

6. The double-filtration nonwoven melt extruder of claim 1, wherein: the secondary filtering device (6) comprises a material feeding box (61), a material feeding channel (62) is arranged in the material feeding box (61), the material feeding channel (62) comprises a first main flow channel (621), the first main flow channel (621) is communicated with the tail end of the molten bath cavity (11), the first main flow channel (621) is branched to form a first branch flow channel (622) and a second branch flow channel (623), the first branch flow channel (622) and the second branch flow channel (623) are converged to form a second main flow channel (624), and the second main flow channel (624) is communicated with the discharging die head (3);

walk and insert in workbin (61) and be provided with first filter body (63) and second filter body (64), first filter body (63) pass first runner (622) and set up, second filter body (64) pass second runner (623) and set up, the upper surface of walking workbin (61) is connected with mounting panel (65) through a plurality of screw rods, be provided with first actuating cylinder (66) and second actuating cylinder (67) of driving on mounting panel (65), the output of first actuating cylinder (66) is connected with first filter body (63), the output that the second drove actuating cylinder (67) is connected with second filter body (64).

7. The double-filtration nonwoven melt extruder of claim 6, wherein: first filter body (63) is the same with the structure of second filter body (64), first filter body (63) is cylindric, and including one-level canned paragraph (631), filter segment (7) and second grade canned paragraph (632), one-level canned paragraph (631) and the first output fixed connection who drives actuating cylinder (66), filter segment (7) include a plurality of connecting rods (71), the both ends of connecting rod (71) are connected with one-level canned paragraph (631) and second grade canned paragraph (632) respectively, each connecting rod (71) circumference sets up the border department at one-level canned paragraph (631) terminal surface, the outside of connecting rod (71) can be dismantled and be provided with filtration (72).

8. The double-filtration nonwoven melt extruder of claim 7, wherein: first filter body (63) and the equal vertical setting of second filter body (64), filtration (72) include two cross-sections for semicircular curved surface filter screen (721), be provided with fixed short column (711) on connecting rod (71), the surface of curved surface filter screen (721) is laminated with the surface of each connecting rod (71) mutually, fixed short column (711) are inserted and are set up in the mesh of curved surface filter screen (721).

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