CN117822133B - Flash evaporation material and melt filter for flash evaporation spinning - Google Patents
Flash evaporation material and melt filter for flash evaporation spinning Download PDFInfo
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- CN117822133B CN117822133B CN202410240957.7A CN202410240957A CN117822133B CN 117822133 B CN117822133 B CN 117822133B CN 202410240957 A CN202410240957 A CN 202410240957A CN 117822133 B CN117822133 B CN 117822133B
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- 238000009987 spinning Methods 0.000 title claims abstract description 39
- 239000000463 material Substances 0.000 title claims abstract description 14
- 230000008020 evaporation Effects 0.000 title claims abstract description 13
- 238000001704 evaporation Methods 0.000 title claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 55
- 239000000155 melt Substances 0.000 claims abstract description 31
- 239000002893 slag Substances 0.000 claims description 59
- 230000007246 mechanism Effects 0.000 claims description 37
- 238000007599 discharging Methods 0.000 claims description 30
- 238000007790 scraping Methods 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 11
- -1 polyethylene Polymers 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 8
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 229920001474 Flashspun fabric Polymers 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- 239000004751 flashspun nonwoven Substances 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 description 27
- 238000003475 lamination Methods 0.000 description 13
- 239000002245 particle Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 150000001298 alcohols Chemical class 0.000 description 2
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 150000008282 halocarbons Chemical class 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009125 negative feedback regulation Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention provides a flash evaporation material and a melt filter for flash evaporation spinning, which solve the problems of blockage of a filter core of the melt filter and the like. The invention has the advantages of good filtering effect, stable structure and the like.
Description
Technical Field
The invention belongs to the technical field of flash spinning, and particularly relates to a flash material and a flash spinning melt filter.
Background
The melt filter is an important device for high-speed spinning and fine denier filament spinning, and is used for continuously filtering high polymer melt to remove impurities and unmelted particles in the melt, so as to improve the spinning performance of the melt and ensure the spinning quality. Existing melt filter constructions typically include a filter chamber, a diverter valve, an exhaust valve, and a filter cartridge, and to improve the quality of the filtration, multilayer filter constructions are typically introduced. However, in the practical use process, the internal filter element of the melt filter is blocked after long-time use, so that the filtering effect is affected. In addition, in order to clean and maintain, the filter is required to be integrally disassembled and the filter element in the filter is required to be replaced, so that time and labor are wasted, and the filtering cost of the melt is increased.
In order to solve the defects existing in the prior art, long-term exploration is performed, and various solutions are proposed. For example, chinese patent literature discloses a laminated melt filter [201811396446.5] comprising a middle bracket, a circular lamination sleeved outside the middle bracket, and a housing, the lamination comprising a first outer lamination, a plurality of inner laminations, and a second outer lamination sequentially arranged from top to bottom; the upper surface of the inner lamination is sequentially provided with a plurality of annular flow passages from outside to inside, two adjacent flow passages are connected through a plurality of diversion trenches distributed along the circumference, and a plurality of fluid outlets distributed along the circumference are arranged on the flow passages close to the middle bracket; salient points opposite to the flow channels are arranged on the lower surface of the inner lamination; one surface of the first outer lamination and one surface of the second outer lamination are planes, and the other surface of the first outer lamination and the other surface of the second outer lamination are identical to the upper surface or the lower surface of the inner lamination in structure; the two adjacent laminations are meshed with each other through the matching action of the convex points and the flow channels.
The problems of cleaning and maintaining the filter element are solved to a certain extent by the scheme, but the scheme still has a plurality of defects, such as easy blockage of the filter element, and the like.
Disclosure of Invention
The object of the present invention is to address the above problems by providing a flash material and a flash spun melt filter.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a flash evaporation material is prepared from polyethylene; and dissolving polyethylene in a spinning solvent to obtain spinning solution, carrying out flash spinning on the spinning solution through a filter main body, then carrying out lapping and hot pressing to obtain a flash evaporation material.
In the flash evaporation material, the mass fraction of polyethylene in the spinning solution is 8-14%;
in one of the above flash materials, the spin solvent is a combination of several of aromatic hydrocarbons, aliphatic hydrocarbons, alicyclic hydrocarbons, unsaturated hydrocarbons, halogenated hydrocarbons, alcohols, esters, ethers, ketones, amides, fluorocarbons.
The utility model provides a melt filter of flash spinning, includes the filter main part, and filter main part embeds filtering mechanism, and the filter constructs and is equipped with scraper subassembly and arranges the sediment subassembly, and the filter main part is equipped with and arranges the sediment subassembly and the relative ejection of compact regulation subassembly of filtering mechanism, and the filter main part embeds the filter cavity, and the filter cavity is divided into feed chamber and ejection of compact chamber by filtering mechanism, and scraper subassembly sets up in the feed intracavity, arranges sediment subassembly setting in ejection of compact intracavity.
In the melt filter for flash spinning, the filter main body comprises a filter cylinder, the top opening of the filter cylinder is sealed by a filter cover, the center of the filter cover is provided with a feed inlet, the bottom of the filter cylinder is provided with a conical collecting part, the upper end of the side surface of the filter cylinder is provided with an upper discharge outlet, the lower end of the side surface of the filter cylinder is provided with a slag discharge outlet, and the bottom of the filter cylinder is provided with a lower discharge outlet.
In the melt filter for flash spinning, the filtering mechanism comprises a first filtering cylinder fixedly connected with the filtering cover body, a second filtering cylinder is slidably arranged on the outer side of the first filtering cylinder, a third filtering cylinder is slidably arranged on the outer side of the second filtering cylinder, filtering openings which are arranged in a central symmetry mode are respectively formed in the first filtering cylinder, the second filtering cylinder and the third filtering cylinder, a filter screen is arranged at the filtering openings, and the filtering mechanism is provided with an extension assembly.
In the melt filter for flash spinning, the stretching assembly comprises a stretching frame body fixedly connected with the third filter cylinder, a stretching rod is connected between the stretching frame body and the bottom of the filter cylinder, and a hydraulic telescopic rod is arranged between the inside of the stretching rod and the lower end of the filter cylinder; the extension frame body is connected with a sealing cylinder which is attached to the inside of the filtering cylinder body and seals the upper discharge hole or the slag discharge hole.
In the melt filter of flash spinning, the scraper component comprises scraper cylinders which are rotatably arranged on the inner sides of the first filter cylinder, the second filter cylinder and the third filter cylinder, linkage toothed rings which are meshed with each other and circumferentially surround are respectively arranged at the ends of the adjacent scraper cylinders, the scraper cylinders are provided with blades which are opposite to the filter openings and the filter screen, the scraper cylinders in the third filter cylinder are provided with driving blades which extend outwards, the extension frame body is provided with an ejection channel which is opposite to the inside of the scraper cylinders, the bottom of the filter cylinder body is connected with an ejection rod which extends upwards into the ejection channel, and one side of the extension frame body opposite to the scraper cylinders is provided with a valve which seals the ejection channel.
In the melt filter for flash spinning, the slag discharging component comprises a slag scraping plate which is rotationally attached to the bottom of the filter cylinder, the slag scraping plate is provided with a slag scraping strip which is arc-shaped, a rotating component is arranged between the slag scraping plate and the extension frame body, and a collecting component is arranged at the slag discharging port.
In the melt filter for flash spinning, the collecting assembly comprises a circulating pipe communicated with the slag discharging port, the circulating pipe is connected with a plurality of collecting tanks connected in parallel through a stop valve and a circulating pump, and the collecting tanks are communicated with the feed port through a switching valve; the collecting tank comprises a main tank body, a filter element made of porous materials is filled in the main tank body, and pressure indicator gauges are respectively arranged on circulating pipes connected with the collecting tank; the switching valve is connected with the feeding pipe and controls the communication between the feeding pipe and the feeding port and/or the circulating pipe.
In the melt filter for flash spinning, the rotating assembly comprises a driven toothed ring arranged at the bottom of the slag scraping plate, a limiting toothed block and an elastic resetting piece are arranged at the bottom of the filtering barrel body and are propped against the driven toothed ring, a driving toothed ring is arranged at the top of the slag scraping plate, the stretching frame body is provided with a driving toothed block which extends downwards and is propped against the driving toothed ring, and the driving toothed ring, the limiting toothed block, the driven toothed ring and the driving toothed block adopt a ratchet structure.
In the melt filter for flash spinning, the discharge adjusting assembly comprises a discharge pipe communicated with the upper discharge port and the lower discharge port, and the discharge pipe is provided with a pressure regulating valve.
In the flash spinning melt filter, a temperature sensor and a pressure sensor are arranged in the filter main body, and a pressure relief opening is formed in the side face of the filter main body.
Compared with the prior art, the invention has the advantages that: the scraper component and the slag discharging component can timely clean impurities in the filtering mechanism, and the discharge adjusting component is used for adjusting flow pressure, so that filtering blockage is prevented; the filter mechanism is provided with a plurality of layers of filter cylinders which can slide and stretch, and the filter screen can be stretched after the continuous filtration of the plurality of layers is carried out, so that the scraper component can conveniently and fully remove impurity particles on the surface; the slag discharging component is provided with a collecting component, so that scraped impurities are concentrated and stored, and the filtering efficiency of the filtering mechanism is not affected.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the filter body of the present invention.
Fig. 3 is a structural cross-sectional view of the filter body of the present invention.
Fig. 4 is a partial cross-sectional view of the present invention.
Fig. 5 is another partial cross-sectional view of the present invention.
Fig. 6 is a schematic structural view of the rotary assembly of the present invention.
In the drawing, a filter main body 1, a filter cylinder 11, a filter cover 12, a feed port 13, a collecting portion 14, an upper discharge port 15, a slag discharge port 16, a lower discharge port 17, a filter mechanism 2, a first filter cartridge 21, a second filter cartridge 22, a third filter cartridge 23, a filter port 24, a filter screen 25, a stretching frame 26, a stretching rod 27, a hydraulic stretching rod 28, a closing cylinder 29, a scraper assembly 3, a scraper cylinder 31, a linkage toothed ring 32, a blade 33, a driving blade 34, an ejection channel 35, an ejection rod 36, a valve 37, a slag discharge assembly 4, a slag scraping plate 41, a slag scraping bar 42, a filter element 43, a discharge adjusting assembly 5, a discharge pipe 51, a pressure regulating valve 52, a pressure relief port 53, a filter chamber 6, a feed chamber 61, a discharge chamber 62, a collecting assembly 7, a circulation pipe 71, a stop valve 72, a circulation pump 73, a collecting tank 74, a switching valve 75, a main tank 76, a pressure indicating gauge 77, a feed pipe 78, a rotating assembly 8, a driven toothed ring 81, a limiting toothed block 82, a driving toothed ring 83, and a driving toothed block 84.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 1-6, a flash spinning melt filter comprises a filter body 1 connected with a flash spinning mechanism, wherein a filtering mechanism 2 is arranged in the filter body 1 to filter out impurity particles in the melt. Unlike the conventional filter cartridge structure, the filter mechanism 2 of the present application is equipped with the scraper assembly 3 and the slag discharging assembly 4, and after a long time of filtration, the foreign particles accumulated inside the filter mechanism 2 are scraped off by the scraper assembly 3 and led out by the slag discharging assembly 4. In order to accommodate the internal passage of the filter means 2 after cleaning, the filter body 1 is equipped with a tapping adjustment assembly 5 opposite to the tapping assembly 4 and the filter means 2 to maintain its pressure stable. Wherein filter body 1 embeds filtration cavity 6, and filtration cavity 6 is separated into feed chamber 61 and ejection of compact chamber 62 by filtering mechanism 2, and scraper assembly 3 sets up in feed chamber 61 and will store up the impurity in feed chamber 61 and strike off and conduct to feed chamber 61, and sediment subassembly 4 sets up in ejection of compact chamber 62, and the impurity deposit of clearance is mixed partial melt and is derived.
In particular, the filter body 1 comprises in particular a filter cartridge 11 of stainless steel material, and the filter cartridge 11 is generally also equipped with a corresponding insulating interlayer. The top opening of the filter cylinder 11 is closed by a filter cover 12, a feed inlet 13 is formed in the center of the filter cover 12, and the filter cylinder 11 and the filter cover 12 can adopt structures such as gaskets, flanges and the like to ensure the tightness of the interface. In addition, the bottom of the filter cylinder 11 is provided with a conical collecting part 14 for ensuring downward deposition of impurities in the vertically arranged filter main body 1, the upper end of the side surface of the filter cylinder 11 is provided with an upper discharge port 15, the lower end of the side surface of the filter cylinder 11 is provided with a slag discharge port 16, and the bottom of the filter cylinder 11 is provided with a lower discharge port 17. The upper discharge port 15 and the lower discharge port 17 are matched for selecting one or discharging together, and are suitable for different filtering states. The slag discharge opening 16 guides out impurities deposited at the bottom.
In depth, the filtering mechanism 2 in the application adopts a filter screen structure, melt enters from the feed inlet 13 and flows into the upper discharge outlet 15 or the lower discharge outlet 17, and specifically comprises a first filter cartridge 21 fixedly connected with the filtering cover body 12, a second filter cartridge 22 is slidably arranged on the inner side of the first filter cartridge 21, a third filter cartridge 23 is slidably arranged on the inner side of the second filter cartridge 22, filtering openings 24 which are arranged in a central symmetry manner are respectively formed in the first filter cartridge 21, the second filter cartridge 22 and the third filter cartridge 23, a filter screen 25 is arranged at the filtering opening 24, and the filtering mechanism 2 is provided with an extension assembly. When the filter mechanism 2 is in the contracted state, the first filter cartridge 21, the second filter cartridge 22 and the third filter cartridge 23 are in the overlapped state, and the melt sequentially passes through the respective filter screens, and the filtered impurities are accumulated between the adjacent filter cartridges. When the filter mechanism 2 is in the extended state, the accumulated foreign matter is scraped off and sunk by the scraper assembly 3, and in this state the scraper assembly 3 can be suspended.
Further, the extension assembly is typically coupled to a pressure sensor, which, in turn, actively activates when the pressure sensor senses that the filter mechanism 2 is obstructed. The filter comprises an extension frame body 26 fixedly connected with a third filter cylinder 23, an extension rod 27 is connected between the extension frame body 26 and the bottom of the filter cylinder 11, and a hydraulic telescopic rod 28 is arranged between the inside of the extension rod 27 and the lower end of the filter cylinder 11; the extension frame 26 is connected with a sealing tube 29 which is attached to the inside of the filter cylinder 11 and seals the upper discharge port 15 or the slag discharge port 16. The hydraulic telescopic rod 28 drives the extension frame 26 to slide up and down, the third filter cartridge 23 is pulled down or lifted up along with the extension frame, and when the extension assembly is in a fully extended state, the transmission structure of the scraper assembly 3 is meshed with the extension frame.
Still further, the scraper assembly 3 comprises scraper drums 31 rotatably mounted inside the first filter cartridge 21, the second filter cartridge 22 and the third filter cartridge 23, and adjacent scraper drums 31 are provided at their ends with interlocking toothed rings 32 meshed with each other and circumferentially encircling each other, the scraper drums 31 having blades 33 opposite to the filter openings 24 and the filter screen 25, and the blades 33 of the scraper drums 31 being fitted inside the filter screen 25. The doctor drums 31 in the third filter cartridge 23 have outwardly extending drive vanes 34, which drive vanes 34 rotate and drive the respective doctor drum 31 in synchronism as the melt flows downwardly and is directed out of the lower outlet 17. The extension frame 26 is provided with an ejection channel 35 opposite to the interior of the scraper drum 31, the bottom of the filter cylinder 11 is connected with an ejection rod 36 extending upwards into the ejection channel 35, and one side of the extension frame 26 opposite to the scraper drum 31 is provided with a valve 37 for closing the ejection channel 35. When the hydraulic telescopic rod 28 drives the extension frame 26 to press down, the valve 37 is pushed open by the ejector rod 36, and at this time, the ejector channel 35 is in an open state and discharges impurity particles stored in the inner side of the filter mechanism 2 into the discharge cavity 62.
In addition, since the impurity particles settle, in order to intensively lead out the impurity particles, the slag discharging assembly 4 comprises a slag scraping plate 41 rotatably attached to the bottom of the filtering cylinder 11, the slag scraping plate 41 is provided with a slag scraping bar 42 which is arc-shaped, a rotating assembly 8 is arranged between the slag scraping plate 41 and the extending frame 26, and a collecting assembly 7 is arranged at the slag discharging opening 16. The rotating assembly 8 drives the slag scraping strip 42 to rotate, so that impurities are prevented from being adsorbed at the bottom of the filtering barrel 11, accumulated impurity mixed melt is sucked into the collecting assembly 7 for secondary filtering and sealing, and filtered melt is reintroduced into the filter main body 1.
Meanwhile, the collecting assembly 7 comprises a circulating pipe 71 communicated with the slag discharging port 16, the circulating pipe 71 is connected with a plurality of collecting tanks 74 connected in parallel through a stop valve 72 and a circulating pump 73, the circulating pump 73 provides circulating driving moment for the melt, and the melt is used as a carrier for depositing impurity particles, so that the impurities are transmitted into the collecting tanks 74. The collection tank 74 is communicated with the feed inlet 13 through a switching valve 75; the collecting tank 74 comprises a main tank body 76, a filter element 43 made of porous materials is filled in the main tank body 76, a pressure indicator 77 is respectively arranged on a circulating pipe 71 connected with the collecting tank 74, when the pressure indicator 77 detects that the pressure is excessive, the condition that impurities stored in the main tank body 76 reach a preset threshold value is indicated, at the moment, the collecting tank 74 and the filter element 43 in the collecting tank can be detached and replaced, and the sealed impurities are subjected to subsequent concentrated treatment; a switching valve 75 is connected to the feed pipe 78 and controls the communication of the feed pipe 78 with the feed port 13 and/or the circulation pipe 71. When it is desired to recover the filtered melt, the feed port 13 communicates with the circulation pipe 71.
Visibly, the rotating assembly 8 is linked with the stretching assembly, and comprises a driven toothed ring 81 arranged at the bottom of the slag scraping plate 41, a limiting toothed block 82 and an elastic resetting piece are arranged at the bottom of the filter cylinder 11 and are pressed against the driven toothed ring 81, a driving toothed ring 83 is arranged at the top of the slag scraping plate 41, and the whole slag scraping plate 41 is of a circular ring structure which is adaptive to the driven toothed ring 81 and the driving toothed ring 83. The extension frame 26 has a driving tooth block 84 extending downward and pressing against the driving tooth ring 83, and the driving tooth ring 83, the limiting tooth block 82, the driven tooth ring 81 and the driving tooth block 84 adopt a ratchet structure. When the extension frame 26 is pressed down, the driving gear block 84 applies a pushing moment to the driving gear ring 83, the driving gear ring 83 converts the pressing moment into a circumferential rotation moment of the scraper 41, the scraper 41 is pressed down each time to rotate by a fixed angle, and the stationary lower scraper 41 is inserted into the driven gear ring 81 to limit, so that unidirectional rotation of the scraper 41 is ensured. In the application, the mode of the filtering mechanism 2, the scraper component 3 and the slag discharging component 4 is switched along with the lifting of the stretching component.
It is apparent that the discharge regulating assembly 5 of the present application includes discharge pipes 51 communicating with the upper discharge port 15 and the lower discharge port 17, and pressure regulating valves 52 are provided on the discharge pipes 51, respectively, to maintain pressure balance, similar to the conventional pressure regulating system. The built-in temperature sensor and the pressure sensor of the filter main body 1 monitor the internal state of the filter main body in real time and carry out negative feedback regulation, the side surface of the filter main body 1 is provided with a pressure relief opening 53, and the pressure relief opening 53 is used for discharging redundant gas on one hand and can urgently remove melt when the filter main body is blocked on the other hand.
Specifically, the application uses the filter main body 1 to carry out the filtering processing of flash evaporation materials, and the raw material is polyethylene; and dissolving polyethylene in a spinning solvent to obtain spinning solution, carrying out flash spinning on the spinning solution through the filter main body 1, then laying a net, and carrying out hot pressing to obtain a flash evaporation material.
Wherein the mass fraction of polyethylene in the spinning solution is 8-14%;
In addition, the spinning solvent is a combination of several of aromatic hydrocarbons, aliphatic hydrocarbons, alicyclic hydrocarbons, unsaturated hydrocarbons, halogenated hydrocarbons, alcohols, esters, ethers, ketones, amides, and fluorocarbons.
Example 1
The melt is input into the filtering mechanism 2 through the feeding hole 13 in the embodiment, impurities are filtered layer by the filtering mechanism 2 and are transmitted to the discharging cavity 62, the slag discharging hole 16 and the lower discharging hole 17 are kept closed, the filtered melt is led out from the upper discharging hole 15, and the working state is a working flow with good state of the filtering mechanism 2.
Example two
The feed inlet 13 in this embodiment inputs the melt into the filtering mechanism 2, the scraper component 3 inside the filtering mechanism 2 cleans and scrapes the impurities on the inner side, the separated impurities sink along with the melt and are conducted to the discharge cavity 62, the upper discharge port 15 is kept closed at this time, the melt is input into the slag discharge port 16, the collection component 7 carries out secondary filtration on the melt and the impurities, and the filtered melt is returned to the filter main body 1 through the feed inlet 13.
Example III
The feeding hole 13 in the embodiment inputs the melt into the filtering mechanism 2, the filtering mechanism 2 filters impurities layer by layer, but at the moment, the upper discharging hole 15 is kept closed, the slag discharging hole 16 transmits the melt into the collecting assembly 7 for buffering, the lower discharging hole 17 is in an open state, and the collecting assembly 7 mainly plays a role in pressure regulating and buffering.
Example IV
In this embodiment, the feed inlet 13 is in a closed state, the rotating assembly 8 drives the slag discharging assembly 4, the impurities deposited at the bottom of the filter main body 1 are input into the collecting assembly 7 through the slag discharging opening 16, at this time, the upper discharge opening 15 and the lower discharge opening 17 are in a closed state, and the filter main body 1 and the collecting assembly 7 form an internal circulation, so that all the impurities deposited after cleaning in the filter main body 1 are conducted into the collecting assembly 7 and are sealed.
Example five
In this embodiment, the feed inlet 13, the upper discharge outlet 15 and the lower discharge outlet 17 are all in an open state, the slag discharge outlet 16 is kept closed, the collecting assembly 7 is stopped, the filter mechanism 2 inside the filter main body 1 continues to operate, but the filtering effect is reduced because the extending assembly is in an extending state, so that the main purpose of the extending assembly is to cut off the slag discharge outlet 16 and facilitate replacement and maintenance of the collecting tank 74 in the collecting assembly 7.
In summary, the principle of this embodiment is as follows: the filter mechanism 2 is cleaned of accumulated impurity particles by the scraper component 3, and then guided out by the scraper component 3, and the discharge pressure stability of the filter main body 1 is ensured by the discharge regulating component 5 before and after cleaning.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms of the filter body 1, the filter cylinder 11, the filter cap 12, the feed port 13, the collecting portion 14, the upper feed port 15, the slag discharge port 16, the lower feed port 17, the filter mechanism 2, the first filter cartridge 21, the second filter cartridge 22, the third filter cartridge 23, the filter port 24, the filter screen 25, the extension frame 26, the extension rod 27, the hydraulic extension rod 28, the closing cylinder 29, the scraper assembly 3, the scraper cylinder 31, the interlocking toothed ring 32, the blade 33, the driving blade 34, the ejection channel 35, the ejection rod 36, the valve 37, the slag discharge assembly 4, the slag scraping plate 41, the slag scraping strip 42, the filter element 43, the discharge regulating assembly 5, the discharge pipe 51, the pressure regulating valve 52, the pressure relief port 53, the filter chamber 6, the feed chamber 61, the discharge chamber 62, the collecting assembly 7, the circulation pipe 71, the shut-off valve 72, the circulation pump 73, the collecting tank 74, the switching valve 75, the main tank 76, the pressure indicating table 77, the feed pipe 78, the rotating assembly 8, the driven toothed ring 81, the limiting toothed block 82, the driving toothed ring 83, the driving toothed block 84, and the driving toothed block 84 are used herein are used in a large number, but other terms are not excluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (6)
1. A melt filter for flash spinning, which comprises a filter main body (1), wherein a filter mechanism (2) is arranged in the filter main body (1), the melt filter is characterized in that the filter mechanism (2) is provided with a scraper component (3) and a slag discharging component (4), the filter main body (1) is provided with a discharging regulating component (5) opposite to the slag discharging component (4) and the filter mechanism (2), a filter cavity (6) is arranged in the filter main body (1), the filter cavity (6) is divided into a feeding cavity (61) and a discharging cavity (62) by the filter mechanism (2), the scraper component (3) is arranged in the feeding cavity (61), the slag discharging component (4) is arranged in the discharging cavity (62); the filter main body (1) comprises a filter cylinder body (11), wherein the top opening of the filter cylinder body (11) is closed by a filter cover body (12), a feed inlet (13) is formed in the center of the filter cover body (12), a conical collecting part (14) is arranged at the bottom of the filter cylinder body (11), an upper discharge hole (15) is formed in the upper end of the side surface of the filter cylinder body (11), a slag discharge hole (16) is formed in the lower end of the side surface of the filter cylinder body (11), and a lower discharge hole (17) is formed in the bottom of the filter cylinder body (11); the filter mechanism (2) comprises a first filter cylinder (21) fixedly connected with a filter cover body (12), a second filter cylinder (22) is slidably arranged in the first filter cylinder (21), a third filter cylinder (23) is slidably arranged in the second filter cylinder (22), filter openings (24) which are arranged in a central symmetry mode are respectively formed in the first filter cylinder (21), the second filter cylinder (22) and the third filter cylinder (23), a filter screen (25) is arranged at the filter opening (24), and the filter mechanism (2) is provided with an extension assembly; the extension assembly comprises an extension frame body (26) fixedly connected with the third filter cylinder (23), an extension rod (27) is connected between the extension frame body (26) and the bottom of the filter cylinder (11), and a hydraulic telescopic rod (28) is arranged between the inside of the extension rod (27) and the lower end of the filter cylinder (11); the extension frame body (26) is connected with a sealing cylinder (29) which is attached to the inside of the filtering cylinder body (11) and seals the upper discharge hole (15) or the slag discharge hole (16); the scraper component (3) comprises scraper cylinders (31) rotatably arranged on the inner sides of a first filter cylinder (21), a second filter cylinder (22) and a third filter cylinder (23), the ends of adjacent scraper cylinders (31) are respectively provided with a linkage toothed ring (32) which is meshed with each other and surrounds along the circumferential direction, the scraper cylinders (31) are provided with blades (33) opposite to a filter opening (24) and a filter screen (25), the scraper cylinders (31) in the third filter cylinder (23) are provided with driving blades (34) extending outwards, the extension frame body (26) is provided with ejection channels (35) opposite to the interiors of the scraper cylinders (31), the bottom of the filter cylinder body (11) is connected with an ejector rod (36) which extends upwards into the ejector channel (35), and a valve (37) for sealing the ejector channel (35) is arranged on one side of the extension frame body (26) opposite to the scraper cylinder (31).
2. A flash spun melt filter according to claim 1, characterized in that the slag discharging assembly (4) comprises a slag scraping plate (41) rotatably fitted at the bottom of the filter cylinder (11), the slag scraping plate (41) is provided with a slag scraping strip (42) in an arc shape, a rotating assembly (8) is arranged between the slag scraping plate (41) and the extension frame body (26), and a collecting assembly (7) is arranged at the slag discharging opening (16).
3. A flash spun melt filter according to claim 2, characterized in that the collecting assembly (7) comprises a circulation pipe (71) communicating with the slag discharge port (16), the circulation pipe (71) being connected with a plurality of collecting tanks (74) connected in parallel through a stop valve (72) and a circulation pump (73), the collecting tanks (74) communicating with the feed port (13) through a switching valve (75); the collecting tank (74) comprises a main tank body (76), a filter element (43) made of porous materials is filled in the main tank body (76), and pressure indicator gauges (77) are respectively arranged on circulating pipes (71) connected with the collecting tank (74); the switching valve (75) is connected with the feeding pipe (78) and controls the communication between the feeding pipe (78) and the feeding hole (13) and/or the circulating pipe (71).
4. The flash spinning melt filter according to claim 2, wherein the rotating assembly (8) comprises a driven toothed ring (81) arranged at the bottom of the slag scraping plate (41), a limiting toothed block (82) and an elastic resetting piece are arranged at the bottom of the filtering cylinder (11) and are pressed against the driven toothed ring (81), a driving toothed ring (83) is arranged at the top of the slag scraping plate (41), the extending frame body (26) is provided with a driving toothed block (84) which extends downwards and is pressed against the driving toothed ring (83), and the driving toothed ring (83), the limiting toothed block (82), the driven toothed ring (81) and the driving toothed block (84) adopt a ratchet structure.
5. A flash spun melt filter according to claim 1, wherein the take-off adjustment assembly (5) comprises a take-off pipe (51) in communication with the upper take-off port (15) and the lower take-off port (17), said take-off pipe (51) being provided with a pressure regulating valve (52); the filter body (1) is internally provided with a temperature sensor and a pressure sensor, and the side surface of the filter body (1) is provided with a pressure relief opening (53).
6. The flash evaporation material is characterized in that the raw material is polyethylene; dissolving polyethylene in a spinning solvent to obtain a spinning solution, carrying out flash spinning on the spinning solution through the melt filter for flash spinning according to any one of claims 1-5, then carrying out lapping and hot pressing to obtain a flash evaporation material.
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