CN111910277B - Production process of special short fiber for high-cleanness spunlace non-woven fabric - Google Patents

Production process of special short fiber for high-cleanness spunlace non-woven fabric Download PDF

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Publication number
CN111910277B
CN111910277B CN202010803164.3A CN202010803164A CN111910277B CN 111910277 B CN111910277 B CN 111910277B CN 202010803164 A CN202010803164 A CN 202010803164A CN 111910277 B CN111910277 B CN 111910277B
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amplitude modulation
base
reaction kettle
filter element
briquetting
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CN111910277A (en
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郑世强
金佳慧
何晓东
邓松涛
翟和平
李胜贤
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Jiangsu Huaxicun Co ltd
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Jiangsu Huaxicun Co ltd
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D13/00—Complete machines for producing artificial threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D41/00—Regeneration of the filtering material or filter elements outside the filter for liquid or gaseous fluids
    • B01D41/04—Regeneration of the filtering material or filter elements outside the filter for liquid or gaseous fluids of rigid self-supporting filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/02—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/20—Means for compressing or compacting bundles prior to bundling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B27/00—Bundling particular articles presenting special problems using string, wire, or narrow tape or band; Baling fibrous material, e.g. peat, not otherwise provided for
    • B65B27/12—Baling or bundling compressible fibrous material, e.g. peat
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/16—Dicarboxylic acids and dihydroxy compounds
    • C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
    • C08G63/181—Acids containing aromatic rings
    • C08G63/183—Terephthalic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78—Preparation processes
    • C08G63/785—Preparation processes characterised by the apparatus used
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/10—Filtering or de-aerating the spinning solution or melt
    • D01D1/106—Filtering
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D13/00—Complete machines for producing artificial threads
    • D01D13/02—Elements of machines in combination
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/096—Humidity control, or oiling, of filaments, threads or the like, leaving the spinnerettes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D7/00—Collecting the newly-spun products
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
    • D01F6/84—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
    • D01G1/02—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form
    • D01G1/04—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form by cutting
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The invention relates to a production process of special short fiber for high-cleanness spunlace non-woven fabric, which comprises the following steps: PTA feeding, slurry preparation, first esterification, second esterification, pre-polycondensation, final polycondensation, spinning, tow convergence, curling, cutting, metering and packaging; the invention solves the main problems in the production process of the special short fiber for the high-cleanness spunlace non-woven fabric at present by adopting various feeding modes, changing the adding mode of the catalyst, pre-cooling the process wastewater, automatically cleaning by adopting a filter, improving the oil inlet of an oil feeding ring, arranging a tail fiber alarm processing device, adopting a tow amplitude modulation device, adopting a rotary standby cutting mechanism, adopting a novel adjustable packing and pressing block and the like, and provides the production process of the special short fiber for the high-cleanness spunlace non-woven fabric, which has the advantages of high production efficiency, stable product quality, flexible and controllable production process, low failure rate and low production cost.

Description

Production process of special short fiber for high-cleanness spunlace non-woven fabric
Technical Field
The invention relates to a production process of short fibers special for high-cleanness spunlace non-woven fabrics, and belongs to the technical field of production of polyester short fibers.
Background
The spunlace nonwoven fabric is an important non-woven fabric processing product, and is widely applied to the fields of medical and health products, synthetic leather base fabrics, shirts and home decoration due to the unique process technology of the spunlace method. The polyester staple fiber special for the high-cleanness spunlace non-woven fabric is a commodity name of the polyester staple fiber specially applied to food, health and medical materials spunlace non-woven fabrics.
The existing production process of the short fiber special for the high-cleanness spunlace non-woven fabric mainly has the following problems:
1. the feeding process has the following problems: the conventional raw material PTA for producing polyester melt for short fibers mostly adopts a manual hoisting feeding mode, and the packing and transportation mode of the PTA raw material is not only traditional ton bag packing, but also container transportation and canning transportation with lower cost and higher efficiency, so that a single manual feeding mode has high cost and low efficiency, certain potential safety hazard and is not suitable for various raw material transportation modes (containers and canning);
2. problems with the catalyst addition process: the catalyst is one of key processes for determining the variety of the short fibers, when a plurality of short fiber processing production lines produce different types of short fiber products, different types of catalysts and corresponding addition amounts are needed, and the existing process is to add the catalyst into a common slurry preparation kettle, which cannot meet the requirement that a plurality of short fiber production lines simultaneously produce different types of short fibers;
3. the process wastewater treatment problem is as follows: the temperature of the process wastewater is high, and the high-temperature wastewater is directly discharged to the process wastewater treatment tower, so that the treatment efficiency of the process wastewater is reduced, and the treatment cost is increased;
4. the filter element cleaning problem is as follows: the filter element of the filter after the polycondensation process needs to be cleaned and recycled, the existing automatic cleaning device (patent number: 200910183012.1) can only clean the filter element with the same length, and the supporting tube, the gear box and the filter element rotating speed reducer need to be removed when the filter element is replaced, so the filter element replacement process is complicated, and the cleaning efficiency is low; filter elements with different lengths still need to be cleaned manually, 1 filter element needs to be cleaned manually for more than 1 hour, the labor intensity of workers is high, the cleaning efficiency is low, and the cleaning effect is poor;
5. spinning oiling problem: the oil film is unevenly distributed in the upper oil ring, so that the spun silk has uneven quality, more weak silks and high irregularity, and the quality problems of easy breakage, fluffing and the like occur in the subsequent production process, thereby seriously influencing the production rhythm and the product quality;
6. tail filament handling problems: during the process of repairing the plate by spinning, stiff tows can be generated, the tail part of the whole tows also has relatively hard lumps, the stiff lumps or the lumps are collectively called tail filaments, and when the tail part of the whole tows is continuously produced, the stiff tows enter the subsequent production equipment due to the fact that no timely and effective alarm processing method exists, and equipment failure and shutdown are caused; and the tail silk can cause the product quality to be reduced once mixed into the finished product package;
7. crimper non-uniformity problem of web: when the tows enter the crimping machine for crimping, the tows on two sides of the crimping roller are uneven in thickness due to fluctuation of the width of the tows, and the crimping machine is easy to break down and stop due to abnormal crimping process caused by excessive thickness and excessive thinness of some tows;
8. the problem of spinning cutting: when the cutter blade of the cutting-off machine is replaced, the cutting-off machine needs to be stopped, so that the production rhythm is influenced, and the alarm processing cannot be carried out when the cutter blade is abnormally broken;
9. handling of exception packets: abnormal bags caused by reasons such as unqualified weight and improper packaging are generated in the production process, the abnormal bags can be processed only in the production neutral period, the processing flow is complex, and quality accidents such as mixed varieties are easily generated when the abnormal bags are not processed timely and relate to products of multiple varieties;
10. packaging problem: the packing belts can only be fixed by 6, the packing position cannot be adjusted, and the method cannot be suitable for the conditions that different varieties need different packing belt numbers and different packing positions; the problem that the oil stain of the packer pollutes products also exists in the packing process.
Disclosure of Invention
The invention aims to overcome the defects and provide the production process of the special short fiber for the high-cleanness spunlace non-woven fabric, which has the advantages of high production efficiency, stable product quality, flexible and controllable production process, low failure rate and low production cost.
The purpose of the invention is realized as follows:
a production process of special short fibers for high-cleanness spunlace non-woven fabrics is realized based on a production line of the special short fibers for the high-cleanness spunlace non-woven fabrics, and the production line of the special short fibers for the high-cleanness spunlace non-woven fabrics comprises a feeding system, a slurry preparation kettle, an esterification reaction kettle, a catalyst adding system, a polycondensation reaction kettle, a filter element cleaning device, a process wastewater pretreatment system, a spinning machine, an oil feeding ring, a yarn storage box, a yarn guide frame, a tail yarn alarm device, a crimping machine, a yarn bundle amplitude modulation device, a spinning cutting machine and a packaging machine; the feeding system, the slurry preparation kettle, the esterification reaction kettle, the polycondensation reaction kettle, the spinning machine, the oil feeding ring, the yarn storage box, the yarn guide frame, the crimping machine, the spinning cutting machine and the packaging machine are sequentially arranged in sequence;
the feeding system comprises a horizontal conveying mechanism, a manual charging hopper, a container charging system, a tank car charging system, a material blending system, a material storage system and a feeding mechanism; the material outlets of the manual charging hopper, the container charging system and the tank car charging system are all arranged on the horizontal conveying mechanism; the material blending system is arranged on the horizontal conveying mechanism; the storage system comprises a storage tank, a storage feeding mechanism and a storage discharging mechanism; one end of the material storage and feeding mechanism is connected with the material blending system, and the other end of the material storage and feeding mechanism is connected with a feeding hole of the material storage tank; one end of the material storage and discharge mechanism is connected with a discharge port of the material storage tank, and the other end of the material storage and discharge mechanism is connected with the material blending system; one end of the feeding mechanism is connected with the material preparation system, and the other end of the feeding mechanism is connected with a subsequent slurry preparation kettle;
the container charging system comprises a charging base, a charging support, a charging hydraulic cylinder, a container type material box and a discharging pipe; the charging support is arranged on the charging base, and one end of the charging support is hinged with the charging base; the fixed end of the charging hydraulic cylinder is hinged with the charging base, and the movable end of the charging hydraulic cylinder is hinged with the bottom surface of the charging support; the container type material box is arranged on the material loading bracket; one end of the discharge pipe is connected with a discharge hole of the container type material box, and the other end of the discharge pipe is connected with the horizontal material conveying mechanism;
the esterification reaction kettle comprises a first esterification reaction kettle and a second esterification reaction kettle; the first esterification reaction kettle is arranged at the back of the slurry preparation kettle, and the second esterification reaction kettle is arranged at the back of the first esterification reaction kettle;
the catalyst adding system comprises a catalyst preparation kettle, a catalyst storage tank and a metering pump; the catalyst preparation kettle is connected with a catalyst storage tank, the catalyst storage tank is connected with a metering pump, and the metering pump is connected with the second esterification reaction kettle;
the polycondensation reaction kettle comprises a pre-polycondensation reaction kettle and a final polycondensation reaction kettle; the pre-polycondensation reaction kettle is arranged at the back of the second esterification reaction kettle; the final polycondensation reaction kettle is arranged at the back of the pre-polycondensation reaction kettle; the filter is respectively arranged on the discharge port pipelines of the pre-polycondensation reaction kettle and the final polycondensation reaction kettle;
the filter element cleaning device comprises a cleaning base, a water gun support, a filter element support, a first motor and a second motor; the water gun bracket and the filter element bracket are respectively arranged on the cleaning base; the water gun support comprises a chain, a water gun, a main chain wheel, a driven chain wheel and a position sensor; the main chain wheel and the driven chain wheel are respectively arranged at the lower part and the upper part of the water gun bracket; the chain is arranged between the main chain wheel and the auxiliary chain wheel; the two water spray guns are respectively arranged on the chain between the main chain wheel and the driven chain wheel; the position sensors are arranged at the upper part and the lower part of the water gun support; the first motor is arranged on the cleaning base and is connected with a main chain wheel of the water gun bracket through a transmission mechanism; the filter element bracket comprises a filter element supporting sleeve and a filter element clamping ring; the filter element supporting sleeve is arranged on the cleaning base; the filter element clamping ring is arranged on the filter element bracket; the positions of the filter element clamping ring and the filter element supporting sleeve correspond up and down; the second motor is arranged at the top of the filter element bracket and is connected with the filter element clamping ring through a transmission mechanism; the filter element cleaning device can be provided with a plurality of water gun supports and filter element supports in parallel; the number of the water spraying guns corresponds to the number of the filter elements; the position of the water spraying gun on the chain can be adjusted up and down, and the distance between the water spraying gun and the filter element can be adjusted left and right;
the process wastewater pretreatment system comprises an intermediate storage tank, a centrifugal pump and a process tower air cooler; high-temperature process wastewater formed by condensing process steam generated by the esterification reaction kettle is discharged into an intermediate storage tank through a pipeline; the intermediate storage tank is connected with the process tower air cooler through a pipeline; a centrifugal pump is arranged on a pipeline connected with the intermediate storage tank and the process tower air cooler;
the oiling ring comprises a base plate and a top cover; the top cover is fixedly arranged on the chassis through bolts; a plurality of oil inlets which are uniformly distributed are formed in the outer ring of the chassis; an oil storage cavity is arranged on the inner ring of the chassis; oil spilling seams are formed at the inner ring edges of the base plate and the top cover; the oil inlet is communicated with the oil storage cavity; the oil storage cavity is communicated with the oil spilling seam;
the guide wire frame comprises a guide wire support, a guide wire support cross rod and a guide wire ring; the guide wire supporting cross rod is transversely arranged on the guide wire bracket, and grooves are respectively formed in the upper surface and the lower surface of the guide wire supporting cross rod; the guide wire ring is arranged in the groove of the upper guide wire support cross rod and the lower guide wire support cross rod in a sliding mode, and the inner ring of the guide wire ring is of a through hole structure;
the tail wire alarm device comprises a tail wire blocking rod and a tail wire sensor; the tail wire blocking rod is arranged at the front position on the guide wire bracket; the tail wire sensor is arranged on the tail wire blocking rod;
the tow amplitude modulation device comprises an amplitude modulation base, a left amplitude modulation mechanism and a right amplitude modulation mechanism; the tow amplitude modulation device is arranged at the inlet of the crimping machine; the left side of the amplitude modulation base is provided with a threaded through hole, and the bottom surface of the amplitude modulation base is provided with a through hole groove; the left amplitude modulation mechanism and the right amplitude modulation mechanism are respectively arranged on the bottom surface of the amplitude modulation base in a sliding manner; the left amplitude modulation mechanism comprises a left screw rod, a left connecting rod, a left positioning pin, a left limiting pin and a left baffle plate; the left baffle is arranged on the top surface of the left connecting rod; the left connecting rod is installed on the bottom surface of the amplitude-modulated base through a left positioning pin, is in sliding contact with the bottom surface of the amplitude-modulated base, and can rotate around the left positioning pin; the upper end of the left connecting rod is provided with a left limiting pin which is embedded in a through hole groove on the bottom surface of the amplitude modulation base; the lower end of the left connecting rod is hinged with the right end of the left screw rod; the left end of the left screw rod is arranged in the threaded through hole on the left side of the amplitude modulation base; the right amplitude modulation mechanism comprises a right screw rod, a right connecting rod, a right positioning pin, a right limiting pin and a right baffle; the right baffle is arranged on the top surface of the right connecting rod; the right connecting rod is installed on the bottom surface of the amplitude modulation base through a right positioning pin, is in sliding contact with the bottom surface of the amplitude modulation base, and can rotate around the right positioning pin; the upper end of the right connecting rod is provided with a right limiting pin which is embedded in a through hole groove on the bottom surface of the amplitude modulation base; the lower end of the right connecting rod is hinged with the right end of the right screw rod; the left end of the right screw rod is arranged in a threaded through hole on the left side of the amplitude modulation base; the left connecting rod is provided with a through hole; the right screw rod penetrates through the left connecting rod through the through hole; the length of the right screw rod is longer than that of the left screw rod; the left baffle and the right baffle are staggered up and down and are in sliding contact;
the spinning cutting machine comprises a rotary platform, a filament cutting device, a metal detection device and a receiving hopper; the shredding devices are arranged on the left side and the right side of the rotary platform; the metal detection device is arranged right below the right shredding device; the receiving hopper is arranged right below the metal detection device, and an inclined funnel is arranged on the front side surface of the receiving hopper; the rotary platform comprises a rotary base, a rotary shaft, a rotary arm and a rotary transmission mechanism; the left and the right of the upper part of the revolving shaft are respectively provided with a revolving arm, and the lower part of the revolving shaft is arranged on the revolving base through a conical bearing; the rotary transmission mechanism is arranged in the rotary base and is connected with the lower end of the rotary shaft; the shredding device comprises a shredding cutter head, blades and a blanking barrel; the blades are uniformly arranged on the shredding cutter disc; the shredding cutter head is arranged at the top of the blanking barrel; the side surface of the charging barrel is arranged on the rotary arm;
the packer comprises a packer base, a packer beam, a packer upright post, a packing material box, an adjustable briquetting mechanism, a briquetting hydraulic cylinder, a box body hydraulic cylinder and a foldable side baffle; the packer upright columns are arranged on two sides of the packer base; the packer crossbeam is arranged above the packer base and is connected with the packer upright columns on the two sides; the packing material box and the adjustable briquetting mechanism are arranged between the beam of the packing machine and the base of the packing machine; the two sides of the packing material box are connected with the movable end of the box hydraulic cylinder, the fixed end of the box hydraulic cylinder is arranged on a cross beam of the packing machine, the two sides of the packing material box are in sliding contact with the upright post, and the packing material box can move up and down along the upright post of the packing machine; the adjustable pressing block mechanism comprises an upper pressing block mechanism and a lower pressing block mechanism; the upper pressing block mechanism comprises a pressing block module and an upper pressing plate; the pressing block module is installed on the bottom surface of the upper pressing plate through a bolt, and the top surface of the upper pressing plate is connected with the movable end of the pressing block hydraulic cylinder; the fixed end of the briquetting hydraulic cylinder is arranged on a beam of the packing machine, and the upper briquetting mechanism can penetrate through the packing material box to perform lifting motion; the lower pressing block mechanism comprises a pressing block module and a lower pressing plate; the pressing block module is installed on the top surface of the lower pressing plate through a bolt, and the bottom surface of the lower pressing plate is installed on the packaging machine base; the pressing block module comprises a fixed pressing block and a movable pressing block; the fixed pressing block is fixedly arranged on the upper pressing plate or the lower pressing plate through bolts; the movable pressing block can be installed at a position moving leftwards or rightwards; a gap is reserved in the longitudinal middle position of the briquetting module; the foldable side blocking pieces are arranged on two sides of the packaging material box, the upper ends of the foldable side blocking pieces are connected with the packaging material box, and the lower ends of the foldable side blocking pieces are connected with the packaging base;
the production process of the short fiber special for the high-cleanness spunlace non-woven fabric comprises the following steps:
step 1, PTA feeding: the PTA raw material is input to a horizontal conveying mechanism through a manual charging hopper, a container charging system and a tank car charging system according to a feeding mode, the PTA raw material is conveyed to a material blending system by the horizontal conveying mechanism, and the PTA raw material is conveyed to a feeding mechanism by the material blending system for subsequent production; when the production demand is met, the material blending system conveys the PTA raw material to a storage tank through a storage feeding mechanism; when no PTA raw material is fed, the storage system conveys the PTA raw material in the storage tank to the material blending system through the storage discharging mechanism, and the material blending system conveys the material to the feeding mechanism;
step 2, slurry preparation: the feeding mechanism conveys the PTA raw material to the slurry preparation kettle, and the slurry preparation kettle prepares the PTA raw material into slurry which is then conveyed to the first esterification reaction kettle through a pipeline;
step 3, first esterification: the slurry is subjected to a first esterification reaction in a first esterification reaction kettle, process steam generated by the esterification reaction is condensed to form high-temperature process wastewater, and then the high-temperature process wastewater enters a process wastewater pretreatment system for treatment: the high-temperature process wastewater firstly enters an intermediate storage tank, then is pumped into an air cooler of a process tower by a centrifugal pump to be cooled, and the cooled process wastewater is discharged into a process wastewater treatment tower to be treated;
step 4, second esterification: the material after the first esterification reaction is subjected to a second esterification reaction in a second esterification reaction kettle, and the generated process steam is condensed into high-temperature process wastewater and then enters a process wastewater pretreatment system for treatment; feeding the prepared catalyst in the catalyst preparation kettle into a catalyst storage tank through a pipeline, quantitatively feeding the catalyst in the catalyst storage tank into a second esterification reaction kettle by a metering pump, and feeding the materials into a pre-polycondensation kettle;
step 5, pre-polycondensation: the materials after esterification and catalyst addition are subjected to pre-polycondensation reaction in a pre-polycondensation kettle, the materials from the pre-polycondensation kettle are filtered by a filter, and a filter element of the filter is automatically and efficiently cleaned by a filter element cleaning device and then recycled;
step 6, final polycondensation: the materials which are subjected to the pre-polycondensation reaction and are filtered enter a final polycondensation kettle for final polycondensation reaction, the materials discharged from the final polycondensation kettle are filtered by a filter, and a filter element of the filter is recycled after being automatically and efficiently cleaned by a filter element cleaning device;
step 7, spinning: the polyester melt generated by the final polycondensation enters a spinning machine for spinning, and the spun yarn enters a yarn storage box after being uniformly oiled and cooled by an oiling ring;
step 8, gathering the tows: the tail yarn alarm device detects and generates an alarm signal when the tail yarn passes through the yarn guide frame, so that the tail yarn is prevented from entering a subsequent production process to cause equipment failure;
step 9, curling: after certain pretreatment, the large-strand tows enter a crimping machine through a tow amplitude modulation device for crimping treatment, and when the left and right thicknesses of the tows are not uniform, a left baffle or a right baffle is moved left and right by adjusting a left screw rod or a right screw rod, so that the uniform thickness of the crimped tows is controlled;
step 10, cutting: the crimped tows enter a shredding cutter head of a spinning cutting machine, are cut into short fibers by a blade, fall into a blanking barrel and further fall into a receiving hopper; when the blades need to be replaced, the rotating platform is only required to be rotated, and the shredding device on the other side is switched to the using position; the metal detection device can prevent metal foreign matters from being mixed in the finished product; when an abnormal package occurs in the production process, finished short fibers in the abnormal package are placed into a receiving hopper through an inclined funnel, so that the abnormal package can conveniently and quickly reenter the production line to complete the treatment of the abnormal package;
step 11, metering and packaging: the cut short fibers pass through a receiving hopper and then enter a metering device for metering, and then enter a packaging material box of a packaging machine, a briquetting hydraulic cylinder pushes an upper briquetting mechanism to press short fiber bags, the packaging material box is lifted upwards by a box body hydraulic cylinder, the packaging material box is lifted upwards to drive foldable baffles at two sides to be pulled upwards, the foldable baffles block oil stains at sliding positions at two sides from being splashed onto the short fiber bags, and workers penetrate through gaps formed among the briquetting modules to finish 6 transverse packaging belt packaging; if need change 4 horizontal packing area +1 vertical packing area packing into, only need move the movable briquetting in left side a mounting hole site of right removal, move the movable briquetting in right side a mounting hole site left, can accomplish 4 horizontal packing area packing, utilize the vertical space of briquetting module can accomplish 1 vertical packing area packing.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts a plurality of feeding modes, combines manual and automatic feeding, improves the feeding efficiency, reduces the feeding labor intensity and the production cost; by changing the adding mode of the catalyst, different production lines can simultaneously produce different varieties of short fiber products under the condition of using a common slurry preparation kettle; the process wastewater is pre-cooled, so that the wastewater treatment efficiency of the process wastewater treatment tower is improved, and the wastewater treatment cost is reduced; the automatic filter cleaning device is adopted to simplify the filter element replacement mode, reduce the cleaning labor intensity of workers, improve the cleaning efficiency and reduce the cleaning cost; by improving the oil inlet of the oiling ring, the oil film inside the oiling ring is uniformly distributed, the oil outlet is uniform and stable, and the problems of unstable spinning quality and high unevenness rate are solved; by arranging the tail yarn alarming and processing device, the tail yarn processing is more reasonable and efficient, and the equipment failure is avoided; the tow amplitude modulation device is used for adjusting the thickness of tows on two sides of the crimping roller to be uneven, so that the phenomenon that the crimping process breaks down and stops is avoided; the rotary standby cutting mechanism is adopted, so that the cutter head can be conveniently replaced under the condition of not influencing production, the metal detector is arranged at the blanking port, the situation that the blade falls off is found in time, the blade is prevented from being mixed into a finished product, the hopper is additionally arranged on the side surface of the blanking port, abnormal packages in the production process can be timely processed during production, the processing flow is simple, efficient and timely, and quality accidents such as mixed varieties and the like caused by the fact that the abnormal packages are not processed in time are avoided; adopt novel adjustable packing briquetting, make the packing pass nimble adjustable, satisfy the packing demand of different products, adopt to install the separation blade additional and solved the product and easily receive greasy dirt pollution problem.
Drawings
FIG. 1 is a schematic process flow diagram of a production process of a high-cleanness spun-laced nonwoven fabric special-purpose short fiber of the present invention.
FIG. 2 is a schematic structural diagram of a feeding system of the production process of the short fiber specially used for the high-cleanness spunlace nonwoven fabric.
Fig. 3 is a schematic structural view of a container loading system of the production process of the short fiber special for the high-cleanness spunlace non-woven fabric.
FIG. 4 is a flow chart of a catalyst adding system of the production process of the short fiber special for the high-cleanness spunlace nonwoven fabric.
Fig. 5 is a schematic structural diagram of a filter element cleaning device of the production process of the short fiber special for the high-cleanness spunlace non-woven fabric.
Fig. 6 is a schematic structural view of a process wastewater pretreatment system of the production process of the short fiber special for the high-cleanness spun-laced non-woven fabric.
FIG. 7 is a schematic cross-sectional view of an oiling ring in the production process of the short fiber specially used for the high-cleanness spunlace nonwoven fabric.
FIG. 8 is a schematic view of an oiling ring assembly structure of the production process of the short fiber specially used for the high-cleanness spunlace nonwoven fabric.
FIG. 9 is a top view of the upper oil ring base plate and the top cover of the production process of the short fiber specially used for the high-cleanness spunlace nonwoven fabric.
Fig. 10 is a schematic structural view of a yarn guide frame of a production process of short fibers special for high-cleanness spunlace non-woven fabrics.
FIG. 11 is a schematic view of a side view structure of a godet frame of a production process of short fibers specially used for high-cleanness spunlace nonwoven fabric.
FIG. 12 is a schematic structural view of a tow amplitude modulation device of the production process of the short fiber special for the high-cleanness spunlace non-woven fabric.
FIG. 13 is a top view of a tow amplitude modulation device of the production process of the short fiber special for the high-cleanness spunlace non-woven fabric.
FIG. 14 is a schematic structural diagram of a left amplitude modulation mechanism and a right amplitude modulation mechanism of a tow amplitude modulation device of the production process of the special short fiber for the high-cleanness spunlace non-woven fabric.
FIG. 15 is a schematic structural view of a spinning cutter for a high-cleanness spunlace nonwoven fabric special staple fiber production process of the present invention.
FIG. 16 is a top view of a spinning and cutting machine for producing a highly clean spunlace nonwoven fabric staple fiber according to the present invention.
FIG. 17 is a schematic view of a structure of a packaging machine for producing a high-cleanness spun-laced nonwoven fabric dedicated short fiber.
FIG. 18 is a schematic view of the installation structure of a 6-strapping tape pressing block module of the packer of the production process of the short fiber special for the high-cleanness spunlace nonwoven fabric.
FIG. 19 is a schematic view of an installation structure of a 4-strapping-tape pressing block module of the packer of the production process of the short fiber special for the high-cleanness spunlace non-woven fabric.
FIG. 20 is a schematic view of the operation of 6 baling belts of the baling machine for producing high-cleanness spun-laced non-woven fabric staple fiber of the present invention.
FIG. 21 is a schematic view of the operation of 4 baling belts of the baling machine for producing high-cleanness spun-laced non-woven fabric staple fiber of the present invention.
FIG. 22 is a schematic view showing the operation of 1 packing belt in the longitudinal direction of the packaging machine for producing the high-cleanness spun-laced non-woven fabric special-purpose short fiber.
Wherein:
the system comprises a feeding system 1, a slurry preparation kettle 2, an esterification reaction kettle 3, a catalyst adding system 4, a polycondensation reaction kettle 5, a filter 6, a filter element cleaning device 7, a process wastewater pretreatment system 8, a spinning machine 9, an oiling ring 10, a yarn storage box 11, a yarn guide frame 12, a tail yarn alarm device 13, a crimping machine 14, a yarn bundle amplitude modulation device 15, a spinning cutting machine 16 and a packing machine 17;
the device comprises a horizontal conveying mechanism 1.1, an artificial charging hopper 1.2, a container charging system 1.3, a tank car charging system 1.4, a material blending system 1.5, a material storage system 1.6, a feeding mechanism 1.7, a charging base 1.3.1, a charging support 1.3.2, a charging hydraulic cylinder 1.3.3, a container type material box 1.3.4, a discharging pipe 1.3.5, a material storage tank 1.6.1, a material storage and feeding mechanism 1.6.2 and a material storage and discharging mechanism 1.6.3;
3.1 parts of a first esterification reaction kettle, 3.2 parts of a second esterification reaction kettle, 4.1 parts of a catalyst preparation kettle, 4.2 parts of a catalyst storage tank, 4.3 parts of a metering pump, 5.1 parts of a pre-polycondensation reaction kettle and 5.2 parts of a final polycondensation reaction kettle;
the cleaning device comprises a cleaning base 7.1, a water gun support 7.2, a filter element support 7.3, a first motor 7.4, a second motor 7.5, a chain 7.2.1, a water spray gun 7.2.2, a main chain wheel 7.2.3, a driven chain wheel 7.2.4, a position sensor 7.2.5, a filter element support sleeve 7.3.1 and a filter element clamping ring 7.3.2;
an intermediate storage tank 8.2, a centrifugal pump 8.3 and a process tower air cooler 8.4;
the oil pump comprises a base plate 10.1, a top cover 10.2, an oil inlet 10.3, an oil storage cavity 10.4 and an oil spilling seam 10.5;
the guide wire support 12.1, the guide wire support cross rod 12.2, the guide wire ring 12.3, the groove 12.2.1, the tail wire stop rod 13.1 and the tail wire sensor 13.2;
the device comprises an amplitude modulation base 15.1, a left amplitude modulation mechanism 15.2, a right amplitude modulation mechanism 15.3, a threaded through hole 15.1.1, a through hole groove 15.1.2, a left screw rod 15.2.1, a left connecting rod 15.2.2, a left positioning pin 15.2.3, a left limit pin 15.2.4, a left baffle 15.2.5, a right screw rod 15.3.1, a right connecting rod 15.3.2, a right positioning pin 15.3.3, a right limit pin 15.3.4 and a right baffle 15.3.5;
the device comprises a rotary platform 16.1, a shredding device 16.2, a metal detecting device 16.3, a receiving hopper 16.4, a rotary base 16.1.1, a rotary shaft 16.1.2, a rotary arm 16.1.3, a rotary transmission mechanism 16.1.4, a shredding cutter disc 16.2.1, a blade 16.2.2 and a blanking cylinder 16.2.3;
the device comprises a packer base 17.1, a packer crossbeam 17.2, a packer upright post 17.3, a packing bin 17.4, an adjustable briquetting mechanism 17.5, a briquetting hydraulic cylinder 17.6, a box hydraulic cylinder 17.7, a foldable side baffle 17.8, an upper briquetting mechanism 17.5.1, a lower briquetting mechanism 17.5.2, a briquetting module 17.5.3, an upper pressing plate 17.5.4, a lower pressing plate 17.5.5, a fixed briquetting 17.5.3.1 and a movable briquetting 17.5.3.2.
Detailed Description
Referring to fig. 1-22, the production process of the short fiber special for the high-cleanness spun-laced non-woven fabric is realized based on a production line of the short fiber special for the high-cleanness spun-laced non-woven fabric, and the production line of the short fiber special for the high-cleanness spun-laced non-woven fabric comprises a feeding system 1, a slurry preparation kettle 2, an esterification reaction kettle 3, a catalyst adding system 4, a polycondensation reaction kettle 5, a filter 6, a filter element cleaning device 7, a process wastewater pretreatment system 8, a spinning machine 9, an upper oiling ring 10, a filament storage box 11, a filament guide frame 12, a tail filament alarm device 13, a crimping machine 14, a filament bundle amplitude modulation device 15, a spinning cutting machine 16 and a packaging machine 17; the feeding system 1, the slurry preparation kettle 2, the esterification reaction kettle 3, the polycondensation reaction kettle 5, the spinning machine 9, the oiling ring 10, the yarn storage box 11, the yarn guide frame 12, the crimping machine 14, the spinning cutting machine 16 and the packaging machine 17 are sequentially arranged in sequence;
the feeding system 1 comprises a horizontal conveying mechanism 1.1, an artificial charging hopper 1.2, a container charging system 1.3, a tank car charging system 1.4, a material blending system 1.5, a material storage system 1.6 and a feeding mechanism 1.7; the material outlets of the manual charging hopper 1.2, the container charging system 1.3 and the tank car charging system 1.4 are all arranged on the horizontal conveying mechanism; the material allocation system 1.5 is arranged on the horizontal material conveying mechanism 1.1; the material storage system 1.6 comprises a material storage tank 1.6.1, a material storage and feeding mechanism 1.6.2 and a material storage and discharging mechanism 1.6.3; one end of the material storage and feeding mechanism 1.6.2 is connected with the material blending system 1.5, and the other end is connected with the feeding hole of the material storage tank 1.6.1; one end of the material storage and discharge mechanism 1.6.3 is connected with a discharge port of the material storage tank 1.6.1, and the other end is connected with the material blending system 1.5; one end of the feeding mechanism 1.7 is connected with the material preparing system 1.5, and the other end is connected with the slurry preparing kettle 2 in the next process;
the container charging system 1.3 comprises a charging base 1.3.1, a charging support 1.3.2, a charging hydraulic cylinder 1.3.3, a container type material box 1.3.4 and a discharging pipe 1.3.5; the charging support 1.3.2 is arranged on the charging base 1.3.1, and one end of the charging support 1.3.2 is hinged with the charging base 1.3.1; the fixed end of the charging hydraulic cylinder 1.3.3 is hinged with the charging base 1.3.1, and the movable end of the charging hydraulic cylinder 1.3.3 is hinged with the bottom surface of the charging support 1.3.2; the container type material box 1.3.4 is arranged on the material loading bracket 1.3.2; one end of the discharge pipe 1.3.5 is connected with a discharge hole of the container type material box 1.3.4, and the other end is connected with the horizontal material conveying mechanism 1.1;
the esterification reaction kettle 3 comprises a first esterification reaction kettle 3.1 and a second esterification reaction kettle 3.2; the first esterification reaction kettle 3.1 is arranged at the back of the slurry preparation kettle 2, and the second esterification reaction kettle 3.2 is arranged at the back of the first esterification reaction kettle 3.1;
the catalyst adding system 4 comprises a catalyst preparation kettle 4.1, a catalyst storage tank 4.2 and a metering pump 4.3; the catalyst preparation kettle 4.1 is connected with a catalyst storage tank 4.2, the catalyst storage tank 4.2 is connected with a metering pump 4.3, and the metering pump 4.3 is connected with a second esterification reaction kettle 3.2;
the polycondensation reaction kettle 5 comprises a pre-polycondensation reaction kettle 5.1 and a final polycondensation reaction kettle 5.2; the pre-polycondensation reaction kettle 5.1 is arranged at the back of the second esterification reaction kettle 3.2; the final polycondensation reaction kettle 5.2 is arranged at the back of the pre-polycondensation reaction kettle 5.1; the filter 6 is respectively arranged on the discharge port pipelines of the pre-polycondensation reaction kettle 5.1 and the final polycondensation reaction kettle 5.2;
the filter element cleaning device 7 comprises a cleaning base 7.1, a water gun support 7.2, a filter element support 7.3, a first motor 7.4 and a second motor 7.5; the water gun support 7.2 and the filter element support 7.3 are respectively arranged on the cleaning base 7.1; the water gun support 7.2 comprises a chain 7.2.1, a water gun 7.2.2, a main chain wheel 7.2.3, a slave chain wheel 7.2.4 and a position sensor 7.2.5; the main chain wheel 7.2.3 and the auxiliary chain wheel 7.2.4 are respectively arranged at the lower part and the upper part of the water gun bracket 7.2; the chain 7.2.1 is installed between the main chain wheel 7.2.3 and the auxiliary chain wheel 7.2.4; two water spray guns 7.2.2 are respectively arranged on the chain 7.2.1 between the main chain wheel 7.2.3 and the auxiliary chain wheel 7.2.4; the position sensors 7.2.5 are arranged at the upper part and the lower part of the water gun support 7.2; the first motor 7.4 is arranged on the cleaning base 7.1, and the first motor 7.4 is connected with a main chain wheel 7.2.3 of the water gun bracket 7.2 through a transmission mechanism; the filter element bracket 7.3 comprises a filter element supporting sleeve 7.3.1 and a filter element clamping ring 7.3.2; the filter element supporting sleeve 7.3.1 is arranged on the cleaning base 7.1; the filter element clamping ring 7.3.2 is arranged on the filter element bracket 7.3; the positions of the filter element clamping ring 7.3.2 and the filter element supporting sleeve 7.3.1 are vertically corresponding; the second motor 7.5 is arranged at the top of the filter element bracket 7.3, and the second motor 7.5 is connected with the filter element clamping ring 7.3.2 through a transmission mechanism; the filter element cleaning device 7 can be provided with a plurality of water gun supports 7.2 and filter element supports 7.3 in parallel; the number of the water spray guns 7.2.2 corresponds to that of the filter elements 701; the position of the water spraying gun 7.2.2 on the chain can be adjusted up and down, and the distance between the water spraying gun 7.2.2 and the filter element 701 can be adjusted left and right;
the process wastewater pretreatment system 8 comprises an intermediate storage tank 8.2, a centrifugal pump 8.3 and a process tower air cooler 8.4; high-temperature process wastewater formed by condensing process steam generated by the esterification reaction kettle 3 is discharged into an intermediate storage tank 8.2 through a pipeline; the intermediate storage tank 8.2 is connected with a process tower air cooler 8.4 through a pipeline; a centrifugal pump 8.3 is arranged on a pipeline connected with the intermediate storage tank 8.2 and the process tower air cooler 8.4;
the upper oil ring 10 comprises a base plate 10.1 and a top cover 10.2; the top cover 10.2 is fixedly arranged on the chassis 10.1 through bolts; a plurality of oil inlets 10.3 which are uniformly distributed are formed in the outer ring of the chassis 10.1; an oil storage cavity 10.4 is arranged on the inner ring of the chassis 10.1; the inner ring edges of the base plate 10.1 and the top cover 10.2 form an oil spilling seam 10.5; the oil inlet 10.3 is communicated with the oil storage cavity 10.4; the oil storage cavity 10.4 is communicated with an oil spilling seam 10.5;
the guide wire frame 12 comprises a guide wire support 12.1, a guide wire support cross rod 12.2 and a guide wire ring 12.3; the guide wire supporting cross rod 12.2 is transversely arranged on the guide wire bracket 12.1, and grooves 12.2.1 are respectively arranged on the upper surface and the lower surface of the guide wire supporting cross rod 12.2; the guide wire ring 12.3 is arranged in the groove 12.2.1 of the upper guide wire support cross rod 12.2 and the lower guide wire support cross rod 12.2 in a sliding mode, and the inner ring of the guide wire ring 12.3 is of a through hole structure;
the tail yarn alarm device 13 comprises a tail yarn shift rod 13.1 and a tail yarn sensor 13.2; the tail wire blocking rod 13.1 is arranged at the front position on the guide wire bracket 12.1; the tail wire sensor 13.2 is arranged on the tail wire blocking rod 13.1;
the tow amplitude modulation device 15 comprises an amplitude modulation base 15.1, a left amplitude modulation mechanism 15.2 and a right amplitude modulation mechanism 15.3; the tow amplitude modulation device 15 is arranged at the inlet of the crimping machine 14; the left side of the amplitude modulation base 15.1 is provided with a threaded through hole 15.1.1, and the bottom surface of the amplitude modulation base 15.1 is provided with a through hole groove 15.1.2; the left amplitude modulation mechanism 15.2 and the right amplitude modulation mechanism 15.3 are respectively arranged on the bottom surface of the amplitude modulation base 15.1 in a sliding manner; the left amplitude modulation mechanism 15.2 comprises a left screw 15.2.1, a left connecting rod 15.2.2, a left positioning pin 15.2.3, a left limit pin 15.2.4 and a left baffle 15.2.5; the left baffle 15.2.5 is mounted on the top surface of the left link 15.2.2; the left connecting rod 15.2.2 is mounted on the bottom surface of the amplitude-modulated base 15.1 through a left positioning pin 15.2.3, the left connecting rod 15.2.2 is in sliding contact with the bottom surface of the amplitude-modulated base 15.1, and the left connecting rod 15.2.2 can rotate around the left positioning pin 15.2.3; the upper end of the left connecting rod 15.2.2 is provided with a left limit pin 15.2.4, and the left limit pin 15.2.4 is embedded in a through hole groove 15.1.2 on the bottom surface of the amplitude modulation base 15.1; the lower end of the left connecting rod 15.2.2 is hinged with the right end of the left screw rod 15.2.1; the left end of the left screw 15.2.1 is arranged in the left threaded through hole 15.1.1 of the amplitude modulation base 15.1; the right amplitude modulation mechanism 15.3 comprises a right screw 15.3.1, a right connecting rod 15.3.2, a right positioning pin 15.3.3, a right limit pin 15.3.4 and a right baffle 15.3.5; the right baffle 15.3.5 is mounted on the top surface of the right link 15.3.2; the right connecting rod 15.3.2 is installed on the bottom surface of the amplitude modulation base 15.1 through a right positioning pin 15.3.3, the right connecting rod 15.3.2 is in sliding contact with the bottom surface of the amplitude modulation base 15.1, and the right connecting rod 15.3.2 can rotate around the right positioning pin 15.3.3 as a center; the upper end of the right connecting rod 15.3.2 is provided with a right limit pin 15.3.4, and a right limit pin 15.3.4 is embedded in a through hole groove 15.1.2 on the bottom surface of the amplitude modulation base 15.1; the lower end of the right connecting rod 15.3.2 is hinged with the right end of the right screw 15.3.1; the left end of the right screw rod 15.3.1 is arranged in the threaded through hole 15.1.1 at the left side of the amplitude modulation base 15.1; a through hole 15.2.2.1 is formed in the left connecting rod 15.2.2; the right lead screw 15.3.1 penetrates through the left connecting rod 15.2.2 through a through hole 15.2.2.1; the length of the right lead screw 15.3.1 is longer than that of the left lead screw 15.2.1; the left baffle 15.2.5 and the right baffle 15.3.5 are staggered up and down and are in sliding contact;
the spinning cutting machine 16 comprises a rotary platform 16.1, a shredding device 16.2, a metal detection device 16.3 and a receiving hopper 16.4; the shredding devices 16.2 are arranged on the left side and the right side of the rotary platform; the metal detection device 16.3 is arranged right below the right shredding device 16.2; the receiving hopper 16.4 is arranged right below the metal detection device 16.3, and the front side surface of the receiving hopper 16.4 is provided with an inclined hopper 16.4.1; the rotary platform 16.1 comprises a rotary base 16.1.1, a rotary shaft 16.1.2, a rotary arm 16.1.3 and a rotary transmission mechanism 16.1.4; the left and the right of the upper part of the rotating shaft 16.1.2 are respectively provided with a rotating arm 16.1.3, and the lower part of the rotating shaft 16.1.2 is arranged on a rotating base 16.1.1 through a conical bearing; the rotary transmission mechanism 16.1.4 is arranged inside the rotary base 16.1.1 and is connected with the lower end of the rotary shaft 16.1.2; the shredding device 16.2 comprises a shredding cutter disc 16.2.1, a blade 16.2.2 and a blanking cylinder 16.2.3; the blades 16.2.2 are uniformly arranged on the shredding cutter disc 16.2.1; the shredding cutter disc 16.2.1 is arranged at the top of the blanking cylinder 16.2.3; the side surface of the charging chute 16.2.3 is arranged on the rotary arm 16.1.3;
the packer 17 comprises a packer base 17.1, a packer beam 17.2, a packer upright post 17.3, a packing bin 17.4, an adjustable briquetting mechanism 17.5, a briquetting hydraulic cylinder 17.6, a box body hydraulic cylinder 17.7 and a foldable side baffle 17.8; the packer upright posts 17.3 are arranged on two sides of the packer base 17.1; the packer crossbeam 17.2 is arranged above the packer base 17.1 and is connected with the packer upright columns 17.3 on the two sides; the packing material box 17.4 and the adjustable briquetting mechanism 17.5 are arranged between the cross beam 17.2 of the packer and the base of the packer; two sides of the packing bin 17.4 are connected with the movable end of the box body hydraulic cylinder 17.7, the fixed end of the box body hydraulic cylinder 17.7 is arranged on the cross beam 17.2 of the packing machine, two sides of the packing bin 17.4 are in sliding contact with the upright post, and the packing bin 17.4 can move up and down along the upright post 17.3 of the packing machine; the adjustable briquetting mechanism 17.5 comprises an upper briquetting mechanism 17.5.1 and a lower briquetting mechanism 17.5.2; the upper briquetting mechanism 17.5.1 comprises a briquetting die set 17.5.3 and an upper press plate 17.5.4; the briquetting module 17.5.3 is mounted on the bottom surface of the upper pressure plate 17.5.4 through bolts, and the top surface of the upper pressure plate 17.5.4 is connected with the movable end of the briquetting hydraulic cylinder 17.6; the fixed end of the briquetting hydraulic cylinder 17.6 is arranged on a beam of the packing machine, and the upper briquetting mechanism 17.5.1 can penetrate through the packing material box 17.4 to move up and down; the lower briquetting mechanism 17.5.2 comprises a briquetting die set 17.5.3 and a lower pressing plate 17.5.5; the briquetting module 17.5.3 is mounted on the top surface of the lower pressing plate 17.5.5 through bolts, and the bottom surface of the lower pressing plate 17.5.5 is mounted on the base 17.1 of the baling press; the briquetting module 17.5.3 comprises a fixed briquetting 17.5.3.1 and a movable briquetting 17.5.3.2; the fixed pressing block 17.5.3.1 is fixedly arranged on the upper pressing plate 17.5.4 or the lower pressing plate 17.5.5 through bolts; the movable pressure block 17.5.3.2 may be mounted in a left or right shift position; a gap 17.5.6 is reserved at the longitudinal middle position of the briquetting die group 17.5.3; the foldable side baffle plates 17.8 are arranged at two sides of the packing material box 17.4, the upper ends of the foldable side baffle plates 17.8 are connected with the packing material box 17.4, and the lower ends of the foldable side baffle plates are connected with the packing base 17.1;
the production process of the short fiber special for the high-cleanness spunlace non-woven fabric comprises the following steps:
step 1, PTA feeding: the PTA raw material is input into a horizontal conveying mechanism 1.1 through a manual charging hopper 1.2, a container loading system 1.3 and a tank car loading system 1.4 according to the incoming material mode, the PTA raw material is conveyed to a material blending system 1.5 by the horizontal conveying mechanism 1.1, and the PTA raw material is conveyed to a feeding mechanism 1.7 by the material blending system 1.5 for subsequent production; when the production demand is met, the material blending system 1.5 conveys the PTA raw material to the material storage tank 1.6.1 through the material storage feeding mechanism 1.6.2; when no PTA raw material is fed, such as at night, the storage system 1.6 conveys the PTA raw material in the storage tank 1.6.1 to the material blending system 1.5 through the storage and discharge mechanism 1.6.3, and the material blending system 1.5 conveys the material to the feeding mechanism 1.7;
step 2, slurry preparation: the feeding mechanism 1.7 conveys the PTA raw material to the slurry preparation kettle 2, the slurry preparation kettle 2 prepares the PTA raw material into slurry, and then the slurry is conveyed to the first esterification reaction kettle 3.1 through a pipeline;
step 3, first esterification: the slurry is subjected to a first esterification reaction in a first esterification reaction kettle 3.1, process steam generated by the esterification reaction is condensed to form high-temperature process wastewater, and then the high-temperature process wastewater enters a process wastewater pretreatment system 8 for treatment: the high-temperature process wastewater firstly enters an intermediate storage tank 8.2, then is pumped into a process tower air cooler 8.4 by a centrifugal pump 8.3 to be cooled, and the cooled process wastewater is discharged into a process wastewater treatment tower to be treated;
step 4, second esterification: the material after the first esterification reaction is subjected to a second esterification reaction in a second esterification reaction kettle 3.2, and the generated process steam is condensed into high-temperature process wastewater and then enters a process wastewater pretreatment system 8 for treatment; the catalyst prepared in the catalyst preparation kettle 4.1 enters a catalyst storage tank 4.2 through a pipeline, a metering pump 4.3 quantitatively feeds the catalyst in the catalyst storage tank 4.2 into a second esterification reaction kettle 3.2, and then the materials enter a pre-polycondensation kettle 5.1;
step 5, pre-polycondensation: the materials after esterification and catalyst addition undergo a pre-polycondensation reaction in a pre-polycondensation kettle 5.1, the materials from the pre-polycondensation kettle 5.1 are filtered by a filter 6, and the filter element of the filter 6 is recycled after being automatically and efficiently cleaned by a filter element cleaning device 7;
step 6, final polycondensation: the materials which are subjected to the pre-polycondensation reaction and are filtered enter a final polycondensation kettle 5.2 for final polycondensation reaction, the materials discharged from the final polycondensation kettle 5.2 are filtered by a filter 6, and a filter element of the filter 6 is automatically and efficiently cleaned by a filter element cleaning device 7 and then recycled;
step 7, spinning: the polyester melt generated by the final polycondensation enters a spinning machine 9 for spinning, and the spun yarn enters a yarn storage box 11 after being uniformly oiled and cooled by an upper oil ring 10;
step 8, gathering the tows: the silk guide frame 12 concentrates and assembles small-strand silk bundles in different silk storage boxes 11 into large-strand silk bundles, and when tail silk passes through the silk guide frame 12, the tail silk alarm device 13 detects and generates an alarm signal to prevent the tail silk from entering a subsequent production process to cause equipment failure;
step 9, curling: after certain pretreatment, the large-strand tows enter a crimping machine 14 through a tow amplitude modulation device 15 for crimping treatment, and when the left and right thicknesses of the tows are not uniform, the left baffle 15.2.5 or the right baffle 15.3.5 are moved left and right by adjusting the left lead screw 15.2.1 or the right lead screw 15.3.1, so that the uniform thickness of the crimped tows is controlled;
step 10, cutting: the crimped tows enter a filament cutter 16.2.1 of a spinning cutter 16, are cut into short fibers by a blade 16.2.2, fall into a blanking cylinder 16.2.3 and further fall into a receiving hopper 16.4; when the blade 16.2.2 needs to be replaced, the rotating platform 16.1 is only required to be rotated, and the shredding device 16.2 on the other side is switched to the using position; the metal detection device 16.3 can avoid metal foreign matters from being mixed in the finished product; when an abnormal packet occurs in the production process, finished short fibers in the abnormal packet are placed into the receiving hopper 16.4 through the inclined hopper 16.4.1, so that the abnormal packet can conveniently and quickly reenter the production line to complete the treatment of the abnormal packet;
step 11, metering and packaging: the cut short fibers pass through a receiving hopper 16.4 and then enter a metering device for metering, and then enter a packing bin 17.4 of a packing machine 17, a briquetting hydraulic cylinder 17.6 pushes an upper briquetting mechanism 17.5.1 to press the short fiber package 101 downwards, a box body hydraulic cylinder 17.7 lifts the packing bin 17.4 upwards, the packing bin 17.4 is lifted upwards to drive foldable baffles 17.8 at two sides to be pulled upwards, the foldable baffles 17.8 prevent oil stains at sliding positions at two sides from being splashed onto the short fiber package 101, and workers enable packing belts to penetrate through gaps formed among briquetting modules 17.5.3 to complete 6 transverse packing belt packages; if the packaging needs to be changed into the packaging of 4 transverse packaging belts and 1 longitudinal packaging belt, 4 transverse packaging belts can be packaged only by moving the left movable pressing block 17.5.3.2 to the right through one mounting hole position and moving the right movable pressing block 17.5.3.2 to the left through one mounting hole position, and 1 longitudinal packaging belt can be packaged by utilizing the longitudinal gap of the pressing block module 17.5.3.
In addition: it should be noted that the above-mentioned embodiment is only a preferred embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.

Claims (4)

1. A production process of special short fibers for high-cleanness spunlace non-woven fabrics is characterized by comprising the following steps: the production process of the short fiber special for the high-cleanness spun-laced non-woven fabric is realized based on a production line of the short fiber special for the high-cleanness spun-laced non-woven fabric, and the production line of the short fiber special for the high-cleanness spun-laced non-woven fabric comprises a feeding system (1), a slurry preparation kettle (2), an esterification reaction kettle (3), a catalyst adding system (4), a polycondensation reaction kettle (5), a filter (6), a filter element cleaning device (7), a process wastewater pretreatment system (8), a spinning machine (9), an oiling ring (10), a silk storage box (11), a silk guide frame (12), a tail silk alarm device (13), a crimping machine (14), a silk bundle amplitude modulation device (15), a spinning cut-off machine (16) and; the feeding system (1), the slurry preparation kettle (2), the esterification reaction kettle (3), the polycondensation reaction kettle (5), the spinning machine (9), the oiling ring (10), the yarn storage box (11), the yarn guide frame (12), the crimping machine (14), the spinning cutting-off machine (16) and the packaging machine (17) are sequentially arranged;
the feeding system (1) comprises a horizontal conveying mechanism (1.1), a manual loading hopper (1.2), a container loading system (1.3), a tank car loading system (1.4), a material blending system (1.5), a material storage system (1.6) and a feeding mechanism (1.7); the material outlets of the manual charging hopper (1.2), the container charging system (1.3) and the tank car charging system (1.4) are all arranged on the horizontal conveying mechanism; the material allocation system (1.5) is arranged on the horizontal material conveying mechanism (1.1); the material storage system (1.6) comprises a material storage tank (1.6.1), a material storage feeding mechanism (1.6.2) and a material storage discharging mechanism (1.6.3); one end of the material storage and feeding mechanism (1.6.2) is connected with the material blending system (1.5), and the other end is connected with a feeding hole of the material storage tank (1.6.1); one end of the material storage and discharge mechanism (1.6.3) is connected with a discharge port of the material storage tank (1.6.1), and the other end is connected with the material blending system (1.5); one end of the feeding mechanism (1.7) is connected with the material blending system (1.5), and the other end is connected with the subsequent slurry preparing kettle (2);
the esterification reaction kettle (3) comprises a first esterification reaction kettle (3.1) and a second esterification reaction kettle (3.2); the first esterification reaction kettle (3.1) is arranged at the back of the slurry preparation kettle (2), and the second esterification reaction kettle (3.2) is arranged at the back of the first esterification reaction kettle (3.1);
the catalyst adding system (4) comprises a catalyst preparation kettle (4.1), a catalyst storage tank (4.2) and a metering pump (4.3); the catalyst preparation kettle (4.1) is connected with a catalyst storage tank (4.2), the catalyst storage tank (4.2) is connected with a metering pump (4.3), and the metering pump (4.3) is connected with the second esterification reaction kettle (3.2);
the polycondensation reaction kettle (5) comprises a pre-polycondensation reaction kettle (5.1) and a final polycondensation reaction kettle (5.2); the pre-polycondensation reaction kettle (5.1) is arranged at the back of the second esterification reaction kettle (3.2); the final polycondensation reaction kettle (5.2) is arranged at the back of the pre-polycondensation reaction kettle (5.1); the filter (6) is respectively arranged on the discharge port pipelines of the pre-polycondensation reaction kettle (5.1) and the final polycondensation reaction kettle (5.2);
the filter element cleaning device (7) comprises a cleaning base (7.1), a water gun support (7.2), a filter element support (7.3), a first motor (7.4) and a second motor (7.5); the water gun support (7.2) and the filter element support (7.3) are respectively arranged on the cleaning base (7.1); the water gun support (7.2) comprises a chain (7.2.1), a water gun (7.2.2), a main chain wheel (7.2.3), a slave chain wheel (7.2.4) and a position sensor (7.2.5); the main chain wheel (7.2.3) and the auxiliary chain wheel (7.2.4) are respectively arranged at the lower part and the upper part of the water gun bracket (7.2); the chain (7.2.1) is mounted between the master sprocket (7.2.3) and the slave sprocket (7.2.4); two water spray guns (7.2.2) are respectively arranged on the chain (7.2.1) between the main chain wheel (7.2.3) and the auxiliary chain wheel (7.2.4); the position sensors (7.2.5) are arranged at the upper part and the lower part of the water gun bracket (7.2); the first motor (7.4) is arranged on the cleaning base (7.1), and the first motor (7.4) is connected with a main chain wheel (7.2.3) of the water gun bracket (7.2) through a transmission mechanism; the filter element bracket (7.3) comprises a filter element supporting sleeve (7.3.1) and a filter element clamping ring (7.3.2); the filter element supporting sleeve (7.3.1) is arranged on the cleaning base (7.1); the filter element clamping ring (7.3.2) is arranged on the filter element bracket (7.3); the positions of the filter element clamping ring (7.3.2) and the filter element supporting sleeve (7.3.1) are vertically corresponding; the second motor (7.5) is arranged at the top of the filter element bracket (7.3), and the second motor (7.5) is connected with the filter element clamping ring (7.3.2) through a transmission mechanism;
the process wastewater pretreatment system (8) comprises an intermediate storage tank (8.2), a centrifugal pump (8.3) and a process tower air cooler (8.4); high-temperature process wastewater formed by condensing process steam generated by the esterification reaction kettle (3) is discharged into an intermediate storage tank (8.2) through a pipeline; the intermediate storage tank (8.2) is connected with the process tower air cooler (8.4) through a pipeline; a centrifugal pump (8.3) is arranged on a pipeline connected with the intermediate storage tank (8.2) and the process tower air cooler (8.4);
the upper oil ring (10) comprises a bottom plate (10.1) and a top cover (10.2); the top cover (10.2) is fixedly arranged on the chassis (10.1) through bolts; a plurality of oil inlets (10.3) which are uniformly distributed are formed in the outer ring of the chassis (10.1); an oil storage cavity (10.4) is arranged on the inner ring of the chassis (10.1); the inner ring edges of the chassis (10.1) and the top cover (10.2) form an oil spilling seam (10.5); the oil inlet (10.3) is communicated with the oil storage cavity (10.4); the oil storage cavity (10.4) is communicated with the oil spilling seam (10.5);
the guide wire frame (12) comprises a guide wire bracket (12.1), a guide wire supporting cross rod (12.2) and a guide wire ring (12.3); the guide wire supporting cross rod (12.2) is transversely arranged on the guide wire bracket (12.1), and grooves (12.2.1) are respectively arranged on the upper surface and the lower surface of the guide wire supporting cross rod (12.2); the guide wire ring (12.3) is arranged in a groove (12.2.1) of the upper guide wire support cross rod (12.2) and the lower guide wire support cross rod (12.2) in a sliding mode, and the inner ring of the guide wire ring (12.3) is of a through hole structure;
the tail wire alarm device (13) comprises a tail wire blocking rod (13.1) and a tail wire sensor (13.2); the tail wire blocking rod (13.1) is arranged at the front position on the guide wire bracket (12.1); the tail wire sensor (13.2) is arranged on the tail wire blocking rod (13.1);
the tow amplitude modulation device (15) comprises an amplitude modulation base (15.1), a left amplitude modulation mechanism (15.2) and a right amplitude modulation mechanism (15.3); the tow amplitude modulation device (15) is arranged at the inlet of the crimping machine (14); the left side of the amplitude modulation base (15.1) is provided with a threaded through hole (15.1.1), and the bottom surface of the amplitude modulation base (15.1) is provided with a through hole groove (15.1.2); the left amplitude modulation mechanism (15.2) and the right amplitude modulation mechanism (15.3) are respectively arranged on the bottom surface of the amplitude modulation base (15.1) in a sliding manner; the left amplitude modulation mechanism (15.2) comprises a left screw rod (15.2.1), a left connecting rod (15.2.2), a left positioning pin (15.2.3), a left limit pin (15.2.4) and a left baffle plate (15.2.5); the left baffle (15.2.5) is mounted on the top surface of the left link (15.2.2); the left connecting rod (15.2.2) is installed on the bottom surface of the amplitude modulation base (15.1) through a left positioning pin (15.2.3), the left connecting rod (15.2.2) is in sliding contact with the bottom surface of the amplitude modulation base (15.1), and the left connecting rod (15.2.2) can rotate around the left positioning pin (15.2.3); the upper end of the left connecting rod (15.2.2) is provided with a left limit pin (15.2.4), and the left limit pin (15.2.4) is embedded in a through hole groove (15.1.2) on the bottom surface of the amplitude modulation base (15.1); the lower end of the left connecting rod (15.2.2) is hinged with the right end of the left screw rod (15.2.1); the left end of the left screw rod (15.2.1) is arranged in a threaded through hole (15.1.1) on the left side of the amplitude modulation base (15.1); the right amplitude modulation mechanism (15.3) comprises a right screw rod (15.3.1), a right connecting rod (15.3.2), a right positioning pin (15.3.3), a right limit pin (15.3.4) and a right baffle (15.3.5); the right baffle (15.3.5) is installed on the top surface of the right connecting rod (15.3.2); the right connecting rod (15.3.2) is installed on the bottom surface of the amplitude modulation base (15.1) through a right positioning pin (15.3.3), the right connecting rod (15.3.2) is in sliding contact with the bottom surface of the amplitude modulation base (15.1), and the right connecting rod (15.3.2) can rotate around the right positioning pin (15.3.3) as a center; the upper end of the right connecting rod (15.3.2) is provided with a right limit pin (15.3.4), and the right limit pin (15.3.4) is embedded in a through hole groove (15.1.2) on the bottom surface of the amplitude modulation base (15.1); the lower end of the right connecting rod (15.3.2) is hinged with the right end of the right screw rod (15.3.1); the left end of the right screw rod (15.3.1) is arranged in a threaded through hole (15.1.1) on the left side of the amplitude modulation base (15.1);
the spinning cutting machine (16) comprises a rotary platform (16.1), a shredding device (16.2), a metal detection device (16.3) and a receiving hopper (16.4); the shredding devices (16.2) are arranged on the left side and the right side of the rotary platform; the metal detection device (16.3) is arranged right below the right wire cutting device (16.2); the receiving hopper (16.4) is arranged right below the metal detection device (16.3), and the front side surface of the receiving hopper (16.4) is provided with an inclined funnel (16.4.1); the rotary platform (16.1) comprises a rotary base (16.1.1), a rotary shaft (16.1.2), a rotary arm (16.1.3) and a rotary transmission mechanism (16.1.4); the left and the right of the upper part of the rotating shaft (16.1.2) are respectively provided with a rotating arm (16.1.3), and the lower part of the rotating shaft (16.1.2) is arranged on a rotating base (16.1.1) through a conical bearing; the rotary transmission mechanism (16.1.4) is arranged in the rotary base (16.1.1) and is connected with the lower end of the rotary shaft (16.1.2); the shredding device (16.2) comprises a shredding cutter disc (16.2.1), a blade (16.2.2) and a blanking cylinder (16.2.3); the blades (16.2.2) are uniformly arranged on the shredding cutter head (16.2.1); the shredding cutter head (16.2.1) is arranged at the top of the blanking barrel (16.2.3); the side surface of the charging drop barrel (16.2.3) is arranged on the rotary arm (16.1.3);
the packer (17) comprises a packer base (17.1), a packer beam (17.2), a packer upright post (17.3), a packing bin (17.4), an adjustable briquetting mechanism (17.5), a briquetting hydraulic cylinder (17.6), a box body hydraulic cylinder (17.7) and a foldable side baffle (17.8); the packer upright columns (17.3) are arranged on two sides of the packer base (17.1); the packer crossbeam (17.2) is arranged above the packer base (17.1) and is connected with the packer upright columns (17.3) on the two sides; the packing material box (17.4) and the adjustable briquetting mechanism (17.5) are arranged between the cross beam (17.2) of the packing machine and the base of the packing machine; the two sides of the packing bin (17.4) are connected with the movable end of a box body hydraulic cylinder (17.7), the fixed end of the box body hydraulic cylinder (17.7) is installed on a cross beam (17.2) of the packing machine, the two sides of the packing bin (17.4) are in sliding contact with the upright post, and the packing bin (17.4) can move up and down along the upright post (17.3) of the packing machine; the adjustable briquetting mechanism (17.5) comprises an upper briquetting mechanism (17.5.1) and a lower briquetting mechanism (17.5.2); the upper pressing block mechanism (17.5.1) comprises a pressing block die set (17.5.3) and an upper pressing plate (17.5.4); the briquetting module (17.5.3) is mounted on the bottom surface of the upper pressure plate (17.5.4) through bolts, and the top surface of the upper pressure plate (17.5.4) is connected with the movable end of the briquetting hydraulic cylinder (17.6); the fixed end of the briquetting hydraulic cylinder (17.6) is arranged on the beam of the packing machine, and the upper briquetting mechanism (17.5.1) can penetrate through the packing material box (17.4) to move up and down; the lower pressing block mechanism (17.5.2) comprises a pressing block die set (17.5.3) and a lower pressing plate (17.5.5); the briquetting module (17.5.3) is mounted on the top surface of the lower pressing plate (17.5.5) through bolts, and the bottom surface of the lower pressing plate (17.5.5) is mounted on the packer base (17.1); the briquetting die set (17.5.3) comprises a fixed briquetting (17.5.3.1) and a movable briquetting (17.5.3.2); the fixed pressing block (17.5.3.1) is fixedly arranged on the upper pressing plate (17.5.4) or the lower pressing plate (17.5.5) through bolts; the movable pressure block (17.5.3.2) is mounted in a left or right movable position; a gap (17.5.6) is reserved at the longitudinal middle position of the briquetting die set (17.5.3); the foldable side blocking pieces (17.8) are arranged at two sides of the packing material box (17.4), the upper ends of the foldable side blocking pieces (17.8) are connected with the packing material box (17.4), and the lower ends of the foldable side blocking pieces are connected with the packing base (17.1);
the production process of the short fiber special for the high-cleanness spunlace non-woven fabric comprises the following steps:
step 1, PTA feeding: the PTA raw material is input to a horizontal conveying mechanism (1.1) through a manual charging hopper (1.2), a container loading system (1.3) and a tank car loading system (1.4) according to the incoming material mode, the PTA raw material is conveyed to a material blending system (1.5) through the horizontal conveying mechanism (1.1), and the PTA raw material is conveyed to a feeding mechanism (1.7) by the material blending system (1.5) for subsequent production; when the production demand is met, the material blending system (1.5) conveys the PTA raw material to a storage tank (1.6.1) through a storage feeding mechanism (1.6.2); when no PTA raw material is fed, the storage system (1.6) conveys the PTA raw material in the storage tank (1.6.1) to the material blending system (1.5) through the storage and discharge mechanism (1.6.3), and the material blending system (1.5) conveys the material to the feeding mechanism (1.7);
step 2, slurry preparation: the feeding mechanism (1.7) conveys the PTA raw material to the slurry preparation kettle (2), the slurry preparation kettle (2) prepares the PTA raw material into slurry, and then the slurry is conveyed to the first esterification reaction kettle (3.1) through a pipeline;
step 3, first esterification: the slurry is subjected to a first esterification reaction in a first esterification reaction kettle (3.1), process steam generated by the esterification reaction is condensed to form high-temperature process wastewater, and then the high-temperature process wastewater enters a process wastewater pretreatment system (8) for treatment: the high-temperature process wastewater firstly enters an intermediate storage tank (8.2), then is pumped into a process tower air cooler (8.4) by a centrifugal pump (8.3) to be cooled, and is discharged into a process wastewater treatment tower to be treated;
step 4, second esterification: the material after the first esterification reaction is subjected to a second esterification reaction in a second esterification reaction kettle (3.2), and the generated process steam is condensed into high-temperature process wastewater and then enters a process wastewater pretreatment system (8) for treatment; the catalyst prepared in the catalyst preparation kettle (4.1) enters a catalyst storage tank (4.2) through a pipeline, a metering pump (4.3) quantitatively feeds the catalyst in the catalyst storage tank (4.2) into a second esterification reaction kettle (3.2), and then the materials enter a pre-polycondensation kettle (5.1);
step 5, pre-polycondensation: the materials after esterification and catalyst addition are subjected to pre-polycondensation reaction in a pre-polycondensation kettle (5.1), the materials from the pre-polycondensation kettle (5.1) are filtered by a filter (6), and a filter element of the filter (6) is recycled after being automatically and efficiently cleaned by a filter element cleaning device (7);
step 6, final polycondensation: the materials which are subjected to the pre-polycondensation reaction and are filtered enter a final polycondensation kettle (5.2) for final polycondensation reaction, the materials discharged from the final polycondensation kettle (5.2) are filtered by a filter (6), and a filter element of the filter (6) is automatically and efficiently cleaned by a filter element cleaning device (7) and then recycled;
step 7, spinning: the polyester melt generated by the final polycondensation enters a spinning machine (9) for spinning, and the spun yarn enters a yarn storage box (11) after being uniformly oiled and cooled by an oiling ring (10);
step 8, gathering the tows: the silk guide frame (12) concentrates and assembles small-strand silk bundles in different silk storage boxes (11) into large-strand silk bundles, and when tail silk passes through the silk guide frame (12), the tail silk alarm device (13) detects and generates an alarm signal to prevent the tail silk from entering a subsequent production process to cause equipment failure;
step 9, curling: after certain pretreatment, the large-strand tows enter a crimping machine (14) through a tow amplitude modulation device (15) for crimping treatment, and when the left and right thicknesses of the tows are not uniform, a left baffle (15.2.5) or a right baffle (15.3.5) are moved left and right by adjusting a left screw rod (15.2.1) or a right screw rod (15.3.1), so that the uniform thickness of the crimped tows is controlled;
step 10, cutting: the crimped tows enter a shredding cutter head (16.2.1) of a spinning cutter (16), are cut into short fibers by a blade (16.2.2), fall into a blanking barrel (16.2.3) and further fall into a receiving hopper (16.4); when the blade (16.2.2) needs to be replaced, the rotating platform (16.1) is only required to be rotated, and the shredding device (16.2) on the other side is switched to the using position; the metal detection device (16.3) can avoid metal foreign matters from being mixed in the finished product; when an abnormal bag appears in the production process, finished short fibers in the abnormal bag are placed into a receiving hopper (16.4) through an inclined hopper (16.4.1) only, and then the abnormal bag can conveniently and quickly enter the production line again to finish the treatment of the abnormal bag;
step 11, metering and packaging: the cut short fibers pass through a collecting hopper (16.4) and then enter a metering device for metering, and then enter a packing bin (17.4) of a packing machine (17), a briquetting hydraulic cylinder (17.6) pushes an upper briquetting mechanism (17.5.1) to press short fiber packages (101), a box hydraulic cylinder (17.7) lifts the packing bin (17.4) upwards, the packing bin (17.4) is lifted upwards to drive foldable baffles (17.8) at two sides to be pulled upwards, the foldable baffles (17.8) prevent oil stains at sliding positions at two sides from being splashed onto the short fiber packages (101), and workers pack the packing strips through gaps formed among briquetting modules (17.5.3) to finish 6 transverse packing strips; if the packaging needs to be changed into the packaging of 4 transverse packaging belts and 1 longitudinal packaging belt, the left movable pressing block (17.5.3.2) is moved rightwards by one mounting hole position, the right movable pressing block (17.5.3.2) is moved leftwards by one mounting hole position, the packaging of 4 transverse packaging belts can be completed, and the packaging of 1 longitudinal packaging belt can be completed by utilizing the longitudinal gap of the pressing block module (17.5.3).
2. The production process of the short fiber specially used for the high-cleanness water-punched non-woven fabric according to claim 1, which is characterized in that: the container loading system (1.3) comprises a loading base (1.3.1), a loading bracket (1.3.2), a loading hydraulic cylinder (1.3.3), a container type material box (1.3.4) and a discharging pipe (1.3.5); the charging support (1.3.2) is arranged on the charging base (1.3.1), and one end of the charging support (1.3.2) is hinged with the charging base (1.3.1); the fixed end of the charging hydraulic cylinder (1.3.3) is hinged with the charging base (1.3.1), and the movable end of the charging hydraulic cylinder (1.3.3) is hinged with the bottom surface of the charging support (1.3.2); the container type material box (1.3.4) is arranged on the material loading bracket (1.3.2); one end of the discharge pipe (1.3.5) is connected with a discharge hole of the container type material box (1.3.4), and the other end is connected with the horizontal material conveying mechanism (1.1).
3. The production process of the short fiber specially used for the high-cleanness water-punched non-woven fabric according to claim 1, which is characterized in that: the filter element cleaning device (7) can be provided with a plurality of water gun supports (7.2) and filter element supports (7.3) in parallel; the number of the water spray guns (7.2.2) corresponds to the number of the filter elements (701); the position of the water spraying gun (7.2.2) on the chain can be adjusted up and down, and the distance between the water spraying gun (7.2.2) and the filter element (701) can be adjusted left and right.
4. The production process of the short fiber specially used for the high-cleanness water-punched non-woven fabric according to claim 1, which is characterized in that: a through hole (15.2.2.1) is formed in a left connecting rod (15.2.2) of the tow amplitude modulation device (15); the right screw rod (15.3.1) penetrates through the left connecting rod (15.2.2) through the through hole (15.2.2.1); the length of the right screw rod (15.3.1) is longer than that of the left screw rod (15.2.1); the left baffle (15.2.5) and the right baffle (15.3.5) are vertically staggered and in sliding contact.
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