CN112111858A - Energy-saving micro-nano melt-blowing production equipment and working principle thereof - Google Patents
Energy-saving micro-nano melt-blowing production equipment and working principle thereof Download PDFInfo
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- CN112111858A CN112111858A CN202011014839.2A CN202011014839A CN112111858A CN 112111858 A CN112111858 A CN 112111858A CN 202011014839 A CN202011014839 A CN 202011014839A CN 112111858 A CN112111858 A CN 112111858A
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin series
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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
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electrostatic Separation (AREA)
- Filtering Materials (AREA)
Abstract
The invention belongs to the field of safety protection functional materials, relates to improvement of melt-blown production equipment, and particularly relates to energy-saving micro-nano melt-blown production equipment and a working principle thereof. The hot air circulation purification device comprises a melt-blowing machine body, and further comprises a heat energy recovery cover and a hot air circulation purification device which are arranged on the screw machine body, wherein the melt-blowing machine body comprises a screw extruder, a feeding hopper, a melt-blowing die head assembly, a heating device, a hot air device, a net curtain, an electrostatic electret machine and a winding device, and the hot air circulation purification device comprises a fan unit, a filter unit, an insulation box, a vacuum negative pressure box and a connecting pipeline. The invention effectively solves the key technical problems that the heating device of the traditional melt-blowing equipment loses heat in a workshop and has ultrahigh energy consumption. Through setting up the energy recuperation cover, with the unnecessary heat recovery that produces in the production process, rethread pipeline and fan's cooperation realize accomplishing the processing high performance product to the recovery and the utilization of losing heat, realize only the energy consumption of one third of traditional equipment energy consumption.
Description
Technical Field
The invention belongs to the field of safety protection functional materials, relates to improvement of melt-blown production equipment, and particularly relates to energy-saving micro-nano melt-blown production equipment and a working principle thereof.
Background
Epidemic situation drives global demand of production and processing technology of safety protection materials. In order to deal with the environmental pollution caused by viruses, dust, chemical substances, harmful microorganisms and the like in the air have adverse effects on the health of people. Effective control of harmful substances in the air is a significant problem to be solved.
The filtering and adsorbing material is widely applied to sewage generated by oil extraction, oil refining and oil storage transportation in the petroleum industry, and can be applied to various industries such as oil tanker ballast water, tank washing water, cold lubricating fluid in the mechanical industry, steel rolling water, electroplating sewage, grain and oil processing, leather, papermaking, textile, food processing and the like. The use of air filters and filter materials such as masks is an important means of purifying air. The common air filtering material cannot thoroughly remove fine particles, and harmful microorganisms are easy to propagate on the filtering material, so that the possibility of secondary pollution exists. The electret air filtering material provides a possibility for solving the problem. By carrying out electrostatic electret treatment on the air filter material, space charges and dipole charges can be stored in the material for a long time, and dust particles and other properties are collected by utilizing the electrostatic force action of the charges, so that the electret air filter material has the advantages of high efficiency, low resistance, energy conservation and the like. However, the charge storage performance of the existing electret air filter material is general, the performance is not stable enough, the charge is easy to attenuate, and the charge storage performance has a great relationship with the characteristic parameters of the electret air filter material, including the surface structure of the material, the molecular structure of the material, the thickness degree of the material, the filler and the like. Common electrostatic electret methods include corona discharge, electrostatic spinning, thermal polarization and the like, wherein the electrostatic spinning utilizes high voltage to inject a large amount of space charges into fibers in the spinning process, the space charges are easily captured by deep traps inside the fibers, and meanwhile, dipole polarization can be induced to generate polarization charges, so that an electret filter material is prepared. However, in the process of using and storing the electret filter material, because moisture, particles and the like in the air are in direct contact with the electret material, the dissipation of surface charges in the electret material is accelerated, so that the attenuation of the electret effect is fast, and finally the filtration efficiency of the filter material is unstable.
The melt-blown air filter material has the characteristics of simple and convenient process, high yield, one-step forming, high strength and high temperature and the like, and is widely applied to the field of air filtration. The minimum average fiber diameter of a typical melt-blown filter material is 1-2 μm, and a certain difference exists between the minimum average fiber diameter and the average fiber diameter of a typical melt-blown filter material and an electrostatic spinning filter material with the fiber diameter range of 100-500nm, so that the problem that the fiber diameter needs to be thinned is urgently solved nowadays to obtain the melt-blown filter material with higher filtering performance. At present, methods for melt-blowing and thinning fiber diameters mainly comprise die head transformation, static electricity, post-treatment and the like, but the preparation methods are complex in process and relatively high in cost.
The process of melt-blown nonwoven preparation is one of the polymer extrusion nonwoven processes, originated in the early 50 s of the 20 th century. The first research in the naval laboratory in the united states developed a filter material for collecting radioactive particles in the upper atmosphere, and the results of the research were published in 1954. In the middle of the 60's of the 20 th century, the united states ESSO corporation (now Exxon corporation) further improved this process and acquired related U.S. patents. In the late 20 th century and the 80 th's, some nonwoven machine manufacturers began to participate in the manufacture of melt blown production equipment due to the development of the melt blown nonwoven market, among which Accurate corporation and J & M corporation in the united states, Reifenhaeuser corporation in germany, and the like. Since the 80's of the 20 th century, the proliferation of meltblown nonwovens has increased rapidly. To overcome the low strength of meltblown nonwovens by Kimble-clark corporation in the united states,
a laminated material of the melt-blown non-woven fabric and the spunlaid non-woven fabric, namely an SMS composite material is developed, is widely applied to surgical gowns, filter materials and the like, and the development of the melt-blown non-woven fabric is powerfully promoted.
The research of the melt-blown nonwoven process in China begins at the middle of the 70 th generation of the 20 th century and at the middle and later stages of the 80 th generation, the melt-blown nonwoven fabric is popularized and applied in China, and main products comprise a filter material, a material for medical sanitation, an environment protection material, a clothing material, a wiping material, an oil absorption material, a thermal insulation material, a battery diaphragm and the like. In the 90 s, with the maturity of melt-blown technology, China has completed the development of wide melt-blown production lines. Especially in recent years, the demand for air filtration materials has increased dramatically, leading to the rapid development of melt-blown production equipment. At present, the number of the existing melt-blown non-woven fabric production lines in China reaches 1000.
The melt-blown non-woven fabric is a high-added-value and high-tech product, and with the continuous expansion of the application field of melt-blown woven materials, the research on new materials is more and more emphasized, and the development of new melt-blown products becomes the central importance of each melt-blown manufacturer.
However, the conventional melt blowing machine has the problems of huge electric energy consumption, high cost and the like.
Disclosure of Invention
The invention provides energy-saving micro-nano melt-blowing production equipment and a working principle thereof, and solves the key technical problem that the heat of a heating device 14 of the traditional melt-blowing equipment is dissipated in a workshop and the energy consumption is ultrahigh. The energy consumption of only 1/10 of that of the traditional equipment is realized to finish processing high-performance products.
The technical scheme of the invention is realized as follows:
the utility model provides an energy-saving micro-nano melt-blown production facility, includes the melt-blown machine body, still includes heat recovery cover and heated air circulation purifier that set up on the screw rod machine body, and wherein the melt-blown machine body includes screw extruder, material loading hopper, melt-blown die head sub-assembly, heating device, hot-blast apparatus, net curtain, static electret and coiling mechanism, and heated air circulation purifier includes fan group, filter bank, insulation can, vacuum negative pressure case and connecting tube.
The fan group comprises a Roots fan, an exhaust fan I, an exhaust fan II and an exhaust fan III, and the filter group comprises a filter I, a filter II, a filter III and a filter IV.
The heat energy recovery cover comprises a screw extruder, a melt-blowing die head assembly and a heating device, the melt-blowing die head assembly comprises a filter IV, a metering pump and a melt-blowing die head, the heat energy recovery cover is a cover body made of stainless steel, the outer layer of the cover body is coated with a heat insulation layer, and the heat insulation layer is heat insulation coating.
The heat energy recovery cover is connected with the insulation can above the vacuum negative pressure boxes through pipelines, the vacuum negative pressure boxes are arranged side by side, the vacuum negative pressure boxes are located between the upper net curtain and the lower net curtain of the net curtain, and the upper net curtain of the net curtain penetrates through the insulation can and the vacuum negative pressure boxes.
Two vacuum negative pressure boxes are connected with the Roots blower through Y-shaped pipelines, an air extractor I and an air extractor II are respectively arranged at the joint of the Y-shaped pipelines and the two vacuum negative pressure boxes, and a filter III is arranged at the joint of the Y-shaped pipelines and the Roots blower.
The vacuum negative pressure box is also provided with a filter I, and a connecting pipeline between the heat energy recovery cover and the heat insulation box is provided with a filter II and an exhaust fan III.
According to the working principle of the energy-saving micro-nano melt-blowing production equipment, polypropylene granules are fed into a screw extruder through a feeding hopper, are heated, melted and uniformly blended through a screw heating device, the polypropylene granules are changed into a high-fluidity melt state, and the fluid passes through a filter IV, a metering pump and a melt-blowing die head to form melt-blowing cloth; in order to ensure the fineness of the fiber sprayed by the die head, the filter IV, the metering pump and the melt-blown die head need to be kept at high temperature; meanwhile, air sucked by the Roots blower is heated by a heating device to serve as auxiliary blowing wind power to stretch, so that melt-blown fibers are uniformly formed into melt-blown cloth on the net curtain, the melt-blown cloth is treated by an electrostatic electret machine to improve the filtering effect, and then the melt-blown cloth is wound into a melt-blown cloth roll for sale by a material receiving device; in the process, part of the heat energy generated by the heating device is used for keeping the polypropylene raw material to be changed from a solid state to a liquid state, and part of the heat energy is used for keeping the temperature of the equipment stable and the technological parameters of the equipment stable; meanwhile, in order to ensure the stability of the hot air stretching temperature, a part of heat energy is used for heating air to form hot air; mainly for roots's fan compressed air, then the heating forms high temperature hot-blast fine high temperature owing that is used for polypropylene fiber.
The invention has the following beneficial effects: in the traditional process, a part of heat energy is released to a workshop environment in a heat radiation mode. Meanwhile, when the hot wires and the hot air form a net on the net curtain, the hot wires become cool, and the heat energy of the hot wire belts and most of the heat energy of the hot air are sucked away by the negative pressure of the fan below the net curtain and directly discharged to the atmosphere. Creating a significant waste of energy. This patent is through the enrichment of heat recovery cover with heat radiation heat energy, to the hot-blast heating of vacuum negative pressure tank recovery, promotes the hot-blast heat energy of recovery. The heated recovered hot air is filtered by the filter 3 and then compressed by the Roots blower to enter the hot air heater for heating and recycling the hot air. Wherein, the redundant part of the recovered hot air is filtered by the filters 1 and 2 and then shunted to the heat preservation box to enter the hot air circulation system again for recycling through the vacuum negative pressure box. The process route and the method can integrally improve the recycling of the operation heat energy of the melt-blown processing equipment, and the operation heat energy is 1/3 of the traditional melt-blown process, thereby achieving the purpose of energy conservation. Secondly, the invention effectively solves the key technical problem that the heat of the heating device 14 of the traditional melt-blowing equipment is dissipated in a workshop and the energy consumption is ultrahigh. Through setting up the energy recuperation cover, with the unnecessary heat recovery that produces in the production process, rethread pipeline and fan's cooperation realize accomplishing the processing high performance product to the recovery and the utilization of losing heat, realize only the energy consumption of one third of traditional equipment energy consumption.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present application.
The device comprises a feeding hopper, a 2-screw extruder, a 3-melt-blowing die head assembly, a 4-heat energy recovery cover, a 5-filter II, a 6-exhaust fan III, a 7-insulation box, an 8-electrostatic electret machine, a 9-winding device, a 10-vacuum negative pressure box, an 11-exhaust fan II, a 12-filter I, a 13-exhaust fan I, a 14-heating device, a 15-filter III, a 16-Roots blower, a 17-screen curtain, a 31-filter IV, a 32-metering pump and a 33-melt-blowing die head.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The utility model provides an energy-saving micro-nano melt-blown production facility, includes the melt-blown machine body, still includes heat recovery cover 2 and heated air circulation purifier that set up on the screw rod machine body, and wherein the melt-blown machine body includes screw extruder 2, material loading hopper 11, melt-blown die head composite member 3, heating device 14, hot air set, net curtain 17, electrostatic electret 8 and coiling mechanism 9, and heated air circulation purifier includes fan group, filter group, insulation can 7, vacuum negative pressure case 10 and connecting tube.
The fan group comprises a Roots fan 16, an exhaust fan I12, an exhaust fan II 11 and an exhaust fan III 6, and the filter group comprises a filter I12, a filter II 5, a filter III 15 and a filter IV 31.
The heat energy recovery cover 4 is internally provided with a screw extruder 22, a melt-blowing die head assembly 3 and a heating device 14, the melt-blowing die head assembly 3 comprises a filter IV 31, a metering pump 32 and a melt-blowing die head 33, the heat energy recovery cover 4 is a cover body made of stainless steel, the outer layer of the cover body is coated with a heat insulation layer, and the heat insulation layer is heat insulation coating.
The heat energy recovery cover 4 is connected with the insulation can 7 above the vacuum negative pressure boxes 10 through a pipeline, the vacuum negative pressure boxes 10 are arranged side by side, the vacuum negative pressure boxes 10 are located between the upper net curtain and the lower net curtain of the net curtain 17, and the upper net curtain of the net curtain 17 penetrates through the insulation can 7 and the vacuum negative pressure boxes 10.
The two vacuum negative pressure boxes 10 are connected with the Roots blower 16 through a Y-shaped pipeline, an exhaust fan I12 and an exhaust fan II 11 are respectively arranged at the joints of the Y-shaped pipeline and the two vacuum negative pressure boxes 10, and a filter III 15 is arranged at the joint of the Y-shaped pipeline and the Roots blower 16.
The vacuum negative pressure box 10 is also provided with a filter I12, and a connecting pipeline between the heat energy recovery cover 4 and the heat insulation box 7 is provided with a filter II 5 and an exhaust fan III 6.
According to the working principle of the energy-saving micro-nano melt-blowing production equipment, polypropylene granules are fed into a screw extruder 2 through a feeding hopper 1, are heated, melted and uniformly blended through a screw heating device, the polypropylene granules are changed into a high-fluidity melt state, and the fluid passes through a filter IV 31, a metering pump 32 and a melt-blowing die head 33 to form melt-blowing cloth; in order to ensure the fineness of the fiber sprayed by the die head, the filter IV 31, the metering pump 32 and the melt-blown die head 33 need to be kept at high temperature; meanwhile, air sucked by the Roots blower 16 is heated by the heating device 14 to be used as auxiliary blowing wind power to stretch, so that melt-blown fibers are uniformly formed into melt-blown cloth on the net curtain, the melt-blown cloth is treated by the electrostatic electret to improve the filtering effect, and then the material receiving device 9 is wound into a melt-blown cloth roll for sale; in the process, a part of the heat energy generated by the heating device 14 is used for keeping the polypropylene raw material to be changed from a solid state to a liquid state, and a part of the heat energy is used for keeping the temperature of the equipment stable and the technological parameters of the equipment stable; meanwhile, in order to ensure the stability of the hot air stretching temperature, a part of heat energy is used for heating air to form hot air; mainly for roots's fan 16 compressed air, then the heating forms high temperature hot-blast fine high temperature owing that is used for polypropylene fiber.
The specific implementation mode of the equipment is as follows:
example 1
A traditional 1.6-meter-width melt-blowing production line is additionally provided with a T-shaped screw rod of 100CM +150CM + 100CM + 250CM and a die head heat energy recovery cover 4, and the T-shaped screw rod is prepared from a stainless steel plate with a nano heat-insulating coating. The radiation heat generated by the screw, the metering pump 32, the filter, the die head and the like forms hot air circulation through the hot air circulation purifying device. Hot air at about 245 ℃ sprayed out of the die head and heat carried by the filaments enter the vacuum box through the net curtain 17 of the winding device 9, are recycled and concentrated, and are recycled through the hot air circulation purification device.
Example 2
A traditional 2.4-meter-width melt-blowing production line is additionally provided with a T-shaped screw rod of 100CM +150CM + 100CM + 350CM and a die head heat energy recovery cover 4, and the T-shaped screw rod is prepared from a stainless steel plate with a nano heat-insulating coating. The radiation heat generated by the screw, the metering pump 32, the filter, the die head and the like forms hot air circulation through the hot air circulation purifying device. Hot air at about 245 ℃ sprayed out of the die head and heat carried by the filaments enter the vacuum box through the net curtain 17 of the winding device 9, are recycled and concentrated, and are recycled through the hot air circulation purification device.
Example 3
A traditional 3.2-meter-width melt-blowing production line is additionally provided with a T-shaped screw rod of 100CM +150CM + 100CM + 350CM and a die head heat energy recovery cover 4, and the T-shaped screw rod is prepared from a stainless steel plate with a nano heat-insulating coating. The radiation heat generated by the screw, the metering pump 32, the filter, the die head and the like forms hot air circulation through the hot air circulation purifying device. Hot air at about 245 ℃ sprayed out of the die head and heat carried by the filaments enter the vacuum box through the net curtain 17 of the winding device 9, are recycled and concentrated, and are recycled through the hot air circulation purification device.
Examples of the effects of the invention
The invention effectively solves the key technical problem that the heat of the heating device 14 of the traditional melt-blowing equipment is dissipated in a workshop and the energy consumption is ultrahigh. Through setting up the energy recuperation cover, with the unnecessary heat recovery that produces in the production process, rethread pipeline and fan's cooperation realize accomplishing the processing high performance product to the recovery and the utilization of losing heat, realize only the energy consumption of one third of traditional equipment energy consumption.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. An energy-saving micro-nano melt-blown production equipment is characterized in that: the hot air circulation type melt blowing machine comprises a melt blowing machine body, and further comprises a heat energy recovery cover and a hot air circulation purification device, wherein the heat energy recovery cover and the hot air circulation purification device are arranged on the screw machine body, the melt blowing machine body comprises a feeding hopper (1), a screw extruder (2), a melt blowing die head assembly (3), a heating device (14), a net curtain (17), an electrostatic electret (8) and a winding device (9), and the hot air circulation purification device comprises a fan unit, a filter unit, an insulation box (7), a vacuum negative pressure box (10) and a connecting pipeline.
2. The energy-saving micro-nano melt-blown production equipment according to claim 1, characterized in that: the fan group comprises a Roots fan (16), an exhaust fan I (12), an exhaust fan II (11) and an exhaust fan III (6), and the filter group comprises a filter I (12), a filter II (5), a filter III (15) and a filter IV (31).
3. The energy-saving micro-nano melt-blown production equipment according to claim 1, characterized in that: the heat energy recovery cover comprises a screw extruder (2), a melt-blowing die head assembly (3) and a heating device (14), the melt-blowing die head assembly (3) comprises a filter IV (31), a metering pump (32) and a melt-blowing die head (33), the heat energy recovery cover (4) is a cover body made of stainless steel, the outer layer of the cover body is coated with a heat insulation layer, and the heat insulation layer is heat insulation coating.
4. The energy-saving micro-nano melt-blown production equipment according to claim 3, characterized in that: the heat energy recovery cover (4) is connected with the heat insulation box (7) above the vacuum negative pressure box (10) through a pipeline, the vacuum negative pressure box (10) is arranged side by side, the vacuum negative pressure box (10) is positioned between the upper net curtain and the lower net curtain of the net curtain (17), and the upper net curtain of the net curtain (17) penetrates through the space between the heat insulation box (7) and the vacuum negative pressure box (10).
5. The energy-saving micro-nano melt-blown production equipment according to claim 4, characterized in that: two vacuum negative pressure boxes (10) are connected with a Roots blower (16) through Y-shaped pipelines, an air exhauster I (12) and an air exhauster II (11) are respectively arranged at the joint of the Y-shaped pipelines connected with the two vacuum negative pressure boxes (10), and a filter III (15) is arranged at the joint of the Y-shaped pipelines connected with the Roots blower (16).
6. The energy-saving micro-nano melt-blown production equipment according to claim 5, characterized in that: a filter I (12) is further arranged on the vacuum negative pressure box (10), and a filter II (5) and an exhaust fan III (6) are arranged on a connecting pipeline between the heat energy recovery cover (4) and the heat insulation box (7).
7. The working principle of the energy-saving micro-nano melt-blown production equipment of any one of claims 1 to 6 is characterized in that: feeding polypropylene granules into a screw extruder (2) through a feeding hopper (1), heating and melting the polypropylene granules through a screw heating device, uniformly blending the polypropylene granules, changing the polypropylene granules into a high-fluidity melt state, and enabling the fluid to form melt-blown cloth through a filter IV (31), a metering pump (32) and a melt-blown die head (33); in order to ensure that the fibers sprayed by the melt-blowing die head (33) are fine, the filter IV (31), the metering pump (32) and the melt-blowing die head (33) need to be kept at high temperature; meanwhile, air sucked by the Roots blower (16) is heated by the heating device (14) to serve as auxiliary blowing wind force to stretch, so that melt-blown fibers are uniformly formed into melt-blown cloth on the net curtain (17), the melt-blown cloth is treated by the electrostatic electret (8) to improve the filtering effect, and then the melt-blown cloth is wound into a melt-blown cloth roll for sale by the winding device (9); in the process, part of the heat energy generated by the heating device (14) is used for keeping the polypropylene raw material to be changed from a solid state to a liquid state, and part of the heat energy is used for keeping the temperature of equipment stable and the technological parameters of the equipment stable; meanwhile, in order to ensure the stability of the hot air stretching temperature, a part of heat energy is used for heating air to form hot air; mainly comprises a Roots blower (16) for compressing air and then heating to form high-temperature hot air for thinning and high-temperature stretching of polypropylene fibers.
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| CN202011014839.2A CN112111858A (en) | 2020-09-24 | 2020-09-24 | Energy-saving micro-nano melt-blowing production equipment and working principle thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115262087A (en) * | 2022-08-25 | 2022-11-01 | 深圳科博源科技有限公司 | Melt-blown board capable of replacing glass fiber board, processing method and application |
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| JPH0233313A (en) * | 1988-07-22 | 1990-02-02 | Toyobo Co Ltd | Ultrafine hollow fiber and nonwoven fabric |
| CN201459366U (en) * | 2009-05-01 | 2010-05-12 | 朱小明 | Heat shaping device for producing non-woven cotton |
| CN101962877A (en) * | 2010-08-31 | 2011-02-02 | 东莞市爱克斯曼机械有限公司 | Small melt-blown non-woven fabric production line |
| CN111424323A (en) * | 2020-04-26 | 2020-07-17 | 上海捷构材料科技有限公司 | Extruding machine |
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| JPH0233313A (en) * | 1988-07-22 | 1990-02-02 | Toyobo Co Ltd | Ultrafine hollow fiber and nonwoven fabric |
| CN201459366U (en) * | 2009-05-01 | 2010-05-12 | 朱小明 | Heat shaping device for producing non-woven cotton |
| CN101962877A (en) * | 2010-08-31 | 2011-02-02 | 东莞市爱克斯曼机械有限公司 | Small melt-blown non-woven fabric production line |
| CN111424323A (en) * | 2020-04-26 | 2020-07-17 | 上海捷构材料科技有限公司 | Extruding machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115262087A (en) * | 2022-08-25 | 2022-11-01 | 深圳科博源科技有限公司 | Melt-blown board capable of replacing glass fiber board, processing method and application |
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