CN117403380B - Vacuum insulation panel core material waste recycling production system and method thereof - Google Patents
Vacuum insulation panel core material waste recycling production system and method thereofInfo
- Publication number
- CN117403380B CN117403380B CN202311329837.6A CN202311329837A CN117403380B CN 117403380 B CN117403380 B CN 117403380B CN 202311329837 A CN202311329837 A CN 202311329837A CN 117403380 B CN117403380 B CN 117403380B
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- air
- cotton
- box
- vacuum insulation
- forming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/007—Fume suction nozzles arranged on a closed or semi-closed surface, e.g. on a circular, ring-shaped or rectangular surface adjacent the area where fumes are produced
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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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
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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
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
本发明公开了一种真空绝热板芯材废料回收生产系统及其方法，包括真空绝热板成型加工用气流成网机构，废料回收生产系统还包括物料循环回收机构，物料循环回收机构包括除尘装置以及余料回收装置，均风成网箱的底部封闭连接有一覆盖于吸风装置外围的集气罩，集气罩通过第一导风管连接到吸风装置的进风端一侧，吸风装置所排出的气体经集气罩集中传输至除尘装置进行过滤后外排，成网输出帘边料、以及均风成网箱漏料经吸风罩进行收集后，经余料收集器收集后排入入料装置的进料端，本发明在生产过程中可以实现玻璃纤维废料回收循环再利用，制成的真空绝热板具有导热系数低、成品密度低，平整度好等特点。
This invention discloses a waste recycling production system and method for vacuum insulation panel core materials, including an airflow forming mechanism for vacuum insulation panel forming and processing, and a material recycling mechanism. The material recycling mechanism includes a dust removal device and a residual material recycling device. A gas collection hood covering the periphery of the suction device is connected to the bottom of the uniform airflow forming box. The gas collection hood is connected to the air inlet side of the suction device through a first air guide pipe. The gas discharged from the suction device is concentrated and transmitted to the dust removal device for filtration before being discharged. The edge material of the forming output curtain and the material leaking from the uniform airflow forming box are collected by the suction hood, collected by the residual material collector, and discharged into the feed end of the feeding device. This invention can realize the recycling and reuse of glass fiber waste during the production process. The vacuum insulation panel produced has the characteristics of low thermal conductivity, low finished product density, and good flatness.
Description
Technical Field
The invention relates to production of a vacuum insulation panel, in particular to a vacuum insulation panel core material waste recycling production system and a method thereof.
Background
The vacuum heat-insulating plate is one of vacuum heat-insulating materials, which consists of filling core materials, gas adsorbents and barrier bags, is widely applied to various industries, the internal core material structure of the vacuum heat-insulating plate is formed by a plurality of layers of glass fiber mats with certain thickness and certain gram weight, so the preparation of the glass fiber mats is a key link for manufacturing the vacuum heat-insulating plate, in the existing glass fiber mat processing process, a carding and net-forming mode is adopted in most cases, the method mainly comprises the steps of carding and carding a main cylinder, a working roller, a stripping roller and the like to form a required glass fiber felt, stacking the glass fiber felt back and forth through a lapping machine to form a glass fiber thick felt with a certain thickness and a large gram weight ratio and uniform gram weight, and then forming filling core materials required by manufacturing a vacuum insulation board through procedures such as hot-press molding and cutting, wherein the filling core materials are arranged in a barrier bag, and vacuum insulation boards are formed through vacuum packaging;
Although glass fiber mats can also be made, there are the following hazards:
in the carding and web forming process, when large cotton mass cotton, rim charge cotton, waste cotton, mixture and the like enter a carding machine to form a web again, phenomena such as uneven thickness, uneven gram weight, foaming, arching, layering, cotton mass increase and the like of the cotton web can occur, the full cyclic utilization can not be realized, the production efficiency is influenced, meanwhile, the labor cost is increased, the production environment is influenced and the like;
1. through a carding and web forming method, during the running of equipment, a large amount of cotton wool is scattered in the mechanical movement, an auxiliary dust removing device is not used, the production environment is affected, solid powder pollution is generated, and the human health is affected;
3. Through a carding method, in carding, fibers are carded along the range of a main tin Lin Yuanzhou card clothing, the outlet carding range is small, when mixed cotton masses and hard cotton masses which are crossed and disordered locally appear, the local part cannot be sufficiently carded in high-speed operation, phenomena such as uneven thickness, uneven gram weight, foaming, arching, layering, cotton mass increase and the like of the cotton web can appear, the flatness of a vacuum insulation panel and the heat conductivity coefficient requirements of the vacuum insulation panel can be influenced, and the qualification rate of the vacuum insulation panel is reduced;
4. The card clothing with the fibers held between the main cylinder and the carding roller carries out carding movement by a carding web forming method, the fibers are damaged greatly, the powder particles of the fibers can be formed, and the density of the manufactured vacuum insulation panel is 350-420 kg/m 3, and the cost is high;
5. By a carding method, the selectable range of glass fiber raw materials is small, the carding feeding raw materials are chopped glass fibers, the diameter is 6-20 mu m, the length is 30-65 mm, the carding is uniform, but when the fiber length is 5-30 mm, the fiber card clothing cannot be held and carded, the fiber lapping shows obvious unidirectionality, the heat insulation performance is relatively poor, the heat conductivity coefficient of the manufactured vacuum insulation panel is 1.8-2.5 mw/m.k, and the heat conductivity coefficient is high.
Therefore, the scheme aims to provide a vacuum insulation panel core material waste recycling production system and a method thereof, improve solid powder pollution caused by cotton wool generated in the traditional carding and web forming operation process, realize web forming requirements through air flow movement, reduce density (270-300 kg/m 3), reduce heat conductivity coefficient (1.2-1.5 mw/m.k), improve product quality and economy, and also reduce environmental pollution through circulation and dust removal of air flow, create good working environment, and simultaneously expand application range of web forming glass fiber, and can select chopped glass fiber, such as 6-20 um diameter, 5-85 mm length, 3-15 um diameter of centrifugal cotton, 5-65 mm length and the like.
Disclosure of Invention
The invention provides a vacuum insulation panel core material waste recycling production system and a method thereof, which can effectively solve the problems.
The invention is realized in the following way:
The utility model provides a vacuum insulation board core waste recycling production system, includes pan feeding device, bale opener, big storehouse, shakes cotton case, belt and vacuum insulation board shaping processing and uses air-laid machine, air-laid machine includes an upper and lower end open-ended samming box, sets up pan feeding device in samming box's feed end one side and is used for evenly leading in the raw materials preprocessing device in the samming box with raw materials after the preliminary treatment, the net output curtain is installed in samming box's bottom transmission, net output curtain's bottom is provided with and is used for evenly adsorbing raw materials in net output curtain bottom's induced draft device, waste recycling production system still includes material circulation recovery mechanism, material circulation recovery mechanism includes:
The bottom of the uniform air net cage is connected with a gas collecting hood covered on the periphery of the air suction device in a sealing way, the gas collecting hood is connected to one side of the air inlet end of the air suction device through a first air guide pipe, gas discharged by the air suction device is transmitted to the dust removal device in a concentrated way through the gas collecting hood to be filtered and then discharged outside, the tops of the large bin and the vibration cotton box are provided with a pressure relief outlet, and the pressure relief outlet is connected to the dust removal device through a pipeline to be filtered and then discharged outside;
The net forming output curtain comprises a forming section arranged in the net forming box and a discharging conveying section penetrating through the outer side of the net forming box, the net forming output curtain comprises an air suction cover arranged on the upper side of the discharging conveying section, the air suction cover is connected to one side of an air inlet end of the air suction device through a second air guide pipe, a corresponding residual material collector is fixedly arranged on a position corresponding to a feeding end of the feeding device, a discharging end of the residual material collector is connected to the feeding end of the feeding device, and the net forming output curtain edge and residual material leaking from the net forming box are collected through the air suction cover and then discharged into the feeding end of the feeding device after being collected through the residual material collector.
As a further improvement, the air-laying mechanism further comprises an auxiliary structure arranged at the opening of the top of the air-laying box, the auxiliary structure comprises an air supplementing structure locked at the top of the inner side of the air-laying box and a plurality of air deflectors movably mounted on the inner side wall of the air-laying box, and the air deflectors are positioned below the air supplementing structure.
As a further improvement, one side opening of the uniform air-laid net cage is a feeding end, the raw material pretreatment device is arranged in the feeding end, the raw material pretreatment device comprises a group of feeding rollers positioned at the tail end of a belt scale, the feeding rollers are arranged at intervals on the side of the feeding rollers, bottom-leaking guiding cotton is arranged below the carding rollers and fixedly connected on the uniform air-laid net cage, the bottom-leaking guiding cotton is of an arc-shaped structure, and the thickness of one end of the bottom-leaking guiding cotton along the conveying direction is gradually increased.
As a further improvement, the roller assembly at least comprises two horizontal rollers arranged at intervals, the horizontal rollers are arranged on a transverse adjusting frame, the roller assembly further comprises at least two vertical rollers arranged below the two horizontal rollers at intervals, the vertical rollers are arranged on a longitudinal adjusting frame, and a plurality of poking sheets are inserted into the horizontal rollers and the vertical rollers.
As a further improvement, the adjacent horizontal rollers and the horizontal rollers are arranged at intervals, or the adjacent horizontal rollers and the vertical rollers are arranged at intervals, the adjacent poking sheets are arranged at intervals and opposite to each other, and the spacing distance between the poking sheets is 1 mm-180 mm.
As a further improvement, the adjacent horizontal rollers are arranged at intervals, or the adjacent horizontal rollers are arranged at intervals with the vertical rollers, the adjacent poking sheets are arranged in a staggered mode, and the interval distance between the poking sheets is 1 mm-150 mm.
As a further improvement, a sedimentation box is arranged between the top and the bottom-most roller of the net forming output curtain forming section and is used for communicating the inner space and the outer space of the uniform air net forming box.
As a further improvement, the device also comprises a pressing curtain component, wherein the pressing curtain component comprises a pressing curtain structure positioned at the discharge end of the air-homogenizing net cage, and a longitudinal adjusting structure which is arranged at the top of the pressing curtain structure and fixedly connected to the outer side of the air-homogenizing net cage, the pressing curtain structure comprises a large pressing roller positioned at the discharge end of the air-homogenizing net cage, a small pressing roller connected with the large pressing roller through a leather curtain and a strip-shaped plate used for loading the large pressing roller and the small pressing roller, a connecting plate fixedly connected to the strip-shaped plate, and the longitudinal adjusting structure comprises a chain connected with the connecting plate, a chain wheel meshed with the chain, and the chain wheel is connected with a power piece.
The invention also provides a method for recycling and producing the core material waste of the vacuum insulation panel, which is applied to the system for recycling and producing the core material waste of the vacuum insulation panel, and comprises the following steps:
S1, feeding glass fiber cotton into a uniform air-laying net cage through a raw material pretreatment device, scattering the glass fiber cotton in the uniform air-laying net cage through a roller, uniformly laying the glass fiber cotton on a net-laying output curtain through negative pressure adsorption of an air suction device, and conveying the glass fiber cotton out of the uniform air-laying net cage through the net-laying output curtain;
s2, sucking the rim charge of the net-forming output curtain and the fiber cotton leaked out of the outer side of the air-homogenizing net-forming box to a residue collector, and then putting the rim charge into a feeding device for recycling;
s3, introducing the air flow extracted by the air suction device into the dust removal device through a pipeline, filtering and purifying, and then discharging the air flow to the atmosphere;
s4, directly putting unqualified defective products which are formed into a net in a net forming output curtain into a feeding device for recycling;
s5, communicating the pressure release outlet at the top of the large bin and the vibrating cotton box to the dust removing device through an air pipe, filtering and purifying, and then discharging the filtered and purified air to the atmosphere.
As a further improvement, the S1 further comprises the step of supplementing air at the top of the air homogenizing net cage, and the supplemented air acts on the glass fiber cotton after being guided by the air deflector.
The beneficial effects of the invention are as follows:
According to the invention, the glass fiber cotton which is not fed is fed into the feeding device, the glass fiber cotton is fed into the bale opener through the feeding device, the bale opener is coarsely beaten by an internal beater and then is blown into the bale opener, the bale opener is split and refined by a pair of rollers and then is stored into the large bin, when the glass fiber cotton is required to be fed gradually, the large bin conveys the glass fiber cotton to the vibrating cotton box through the conveying fan, and the glass fiber cotton with the corresponding gram weight is weighed on the belt and then is fed into the air-stream forming mechanism, if a conventional main cylinder carding and forming mode is adopted, the cotton can not be fully carded into a net in high-speed operation when the mixed cotton and the hard cotton are locally mixed, and the phenomena of uneven cotton net thickness, uneven gram weight, foaming, arching, layering, cotton mass increase and the like can occur, so that the following phenomena:
the invention realizes the uniform net forming of the glass fiber cotton by an air-laid mode. The raw materials are sent into a uniform air-laid net cage in a throwing way through a raw material pretreatment device, cotton falls onto a roller assembly evenly under the centrifugal force and self gravity of the raw materials during throwing and the suction force of an air suction device, is evenly scattered through a poking plate on the roller assembly and then laid on a net-laid output curtain to form a glass fiber felt, and is flattened through a final pressing curtain assembly to form a finished glass fiber felt, so that the existing carding net-forming process is directly replaced, the fiber requirement and selection range of fiber feeding are enlarged through the raw material pretreatment device, the cotton is adsorbed and scattered in a rotating way through a plurality of roller surfaces of the bottom air suction device, net-forming is realized through a plurality of positions of outlets of the roller assembly, the net-forming range of the outlets is large, and a net-forming structure with even distribution is formed
Unlike carding net-forming fiber, the air-forming fiber is randomly distributed along the X axis, Y axis and Z axis, so that the interweaving force among the fibers is improved, the air permeability is increased, and the manufactured vacuum insulation panel has low density and low cost. Meanwhile, the heat conductivity coefficient is reduced, and the energy-saving effect is achieved.
After adopting the air-laying mode of the air-laying net cage, the material leakage is easy to occur between the net-laying output curtain and the air-laying net cage, the phenomenon of rim charge waste is easy to occur, and the air exhausted by the air suction device also easily influences the external environment, therefore, the invention is also provided with a material circulation recovery mechanism on the basis of the air-laying net, and the concrete steps are as follows:
In the whole net forming process, because the net forming cotton on the two side walls of the equipment is thinner and uneven, the two lateral directions of one end of the air-homogenizing net forming box, which is close to the discharge port, are communicated with a residue collector, and the rim charge can be collected into the residue collector and is put into a material feeding device again to enter the net forming system through the bale opener, the large bin and the vibrating cotton box in a recycling way, so that the secondary utilization of the rim charge is realized.
In the invention, the net forming output curtain adopts the conveying net forming, so that a certain gap exists between the air-homogenizing net forming box and the net forming output curtain, namely, a hole exists between the equipment movement mechanism and the outer environment, a small amount of cotton leaks in the net forming process, the leaked cotton can be also put into a residual material collector and put into a feeding device again to enter the net forming system through a bale opener, an opener, a large bin and a vibration cotton box again in a circulating manner, and secondary utilization of leaked materials is realized.
Because a small amount of glass fiber cotton filaments are discharged through the curtain hole gaps of the net forming output curtain in the air suction structure suction during the net forming process, if the air is directly discharged into the atmosphere, the air flow sucked by the air suction device at the bottom of the net forming output curtain is not directly discharged to the atmosphere, but is conveyed to the dust removing device through the second air pipe and the auxiliary fan, and is collected through the multi-layer filter screen in the dust removing device, the air environment is prevented from being polluted by cotton filaments, and the cleaning of workshops is ensured.
The invention relates to a high-pressure-relief air-driven air-conditioning device, which is characterized in that glass fiber materials are conveyed by a large bin and a vibration cotton box through a condenser at the top, the air quantity is relatively large, when the materials are conveyed to the large bin or the vibration cotton box through a material conveying air pipe, the materials are required to be slowly settled on a conveying curtain of equipment, and air cannot be directly discharged to the atmosphere from an outlet of the condenser for pressure relief and wind power, and fine cotton particles are entrained in the air, so that environmental pollution can be caused.
After the production is finished, the inner core material of the vacuum insulation panel with partial unqualified products, such as bulges, air leakage, poor edge sealing, unqualified flatness and long-term failure, is wasted if the inner core material is directly used as waste, and the inner core material of the vacuum insulation panel with the unqualified products can be returned to a feeding device, so that the inner core material is recycled into a net forming system to realize secondary utilization of the unqualified products through a bale opener, an opener, a large bin, a cotton vibrating box and a belt scale.
In the actual use stage, because the negative pressure suction force formed by the recovery device at the latter half section of the net-forming output curtain can lead the newly formed cotton net to be easier to deform and collapse under the action of the recovery device and directly influence the net-forming effect of the air-forming mechanism, the invention introduces the air-supplementing structure and the air deflector, and can balance and promote the net-forming effect caused by the air suction device through the air-supplementing structure, thereby restricting the suction force of the recovery device and avoiding damaging the net surface in the recovery process of rim charge and leakage of the recovery device.
The air suction device is positioned at the bottom of the whole air-homogenizing net cage, negative pressure is required to be generated to suck cotton downwards, but if the top of the air-homogenizing net cage is closed, the suction force caused by the air suction device is limited, and the cotton net cannot be uniformly distributed, so that the air suction device is also provided with an air supplementing structure at the top of the inner side of the air-homogenizing net cage, and the air supplementing structure can be an air supplementing machine or a simple opening, so long as the air suction device can be promoted to generate negative pressure, the air suction device can generate more uniform suction force which accords with the strength to the cotton net, and the uniform distribution of the cotton net is promoted.
Because the feeding direction of the raw material pretreatment device and the direction of the air suction device are uncontrollable, unknown variables often exist in the uniform web forming process to cause non-uniformity of the cotton web, and therefore, the auxiliary structure is also provided with the air guide plate, and the air guide plate can guide the direction of wind entering from the air supplementing structure so as to influence the acting direction of the air suction device, so that when workers observe non-uniformity of the cotton web, the adsorption direction of the air suction device is timely adjusted through the air guide plate, and the direction of the air suction device is more effective.
In the whole feeding process of the uniform air-laying net cage, the direction of the raw materials fed by the raw material pretreatment device can influence the uniformity of the net, if the raw materials are fed in the whole process, no matter how the roller assembly, the air suction device and the auxiliary structure are in effort, the raw materials are hard to obtain uniform cotton nets.
The raw materials of feeding can break up through the roller subassembly, but the roller subassembly is not the disordered distribution, but has certain order to arrange, and the roller subassembly is divided into horizontal running roller at least, also can divide into horizontal running roller and perpendicular running roller, and the raw materials just can be sufficient even through breaking up once at least promptly, but the thickness requirement of different vacuum insulation panels to the inner core is different, so the position of horizontal running roller and perpendicular running roller can't be fixed, need be through the movable regulation of corresponding upper regulating frame and lower regulating frame to let the distance between running roller and the running roller accord with the requirement of production.
The shifting sheets are inserted on the rollers, wherein the distance between the shifting sheets and the shifting sheets can directly influence the uniformity of the cotton web, although the distance can be slightly different due to the gram weight of the cotton web, in practice, two conditions exist, namely, the interval between the adjacent horizontal rollers and the horizontal rollers is smaller, or the interval between the adjacent horizontal rollers and the vertical rollers is smaller, the adjacent shifting sheets are spaced and oppositely arranged, the distance between the shifting sheets is wider, the arrangement interval between the shifting sheets can be larger, such as 1 mm-180 mm of the interval distance between the shifting sheets, the interval between the adjacent horizontal rollers and the horizontal rollers is arranged, or the interval between the adjacent horizontal rollers and the vertical rollers is arranged, the adjacent shifting sheets are staggered, and the arrangement interval between the shifting sheets is smaller, such as 1 mm-150 mm of the interval between the shifting sheets.
After the regulation of the air-laid mechanism, the cotton net basically meets the requirement, but the last step of taking care is still needed, so that a pressing curtain structure is further arranged at the discharge end of the air-laid mechanism, the pressing curtain structure can press the cotton net to a certain extent through a leather curtain, the thickness of the cotton net is pressed to meet the requirement, and the upper end of the pressing curtain structure is further provided with a longitudinal regulation structure which can drive the pressing curtain structure to move upwards or downwards, so that the action height of the leather curtain is regulated, and even the leather curtain of the cotton net facing the requirements of different thicknesses can play a certain role.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a front view structure of a vacuum insulation panel core material waste recycling production system provided by the invention.
Fig. 2 is a schematic structural view of an airlaid mechanism according to the present invention.
Fig. 3 is a schematic top view (first state) of a roller assembly according to the present invention.
Fig. 4 is a schematic top view (second state) of a roller assembly according to the present invention.
Fig. 5 is a schematic structural diagram of a feedback component according to a second embodiment of the present invention.
Fig. 6 is a block diagram of a method for recycling and producing core materials of vacuum insulation panels according to the present invention.
Detailed Description
For the purpose of making embodiments of the present invention fall within the scope of the present invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as referring to purposes, technical solutions and advantages of the present invention in any way. All other implementations, which can be derived by a person skilled in the art without making any inventive effort, show or imply relative importance or implicitly indicate the number of technical features indicated on the basis of the implementations in the invention. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Example 1
Referring to fig. 1-6, a vacuum insulation panel core material waste recycling production system comprises a feeding device 10, an unpacker 20, an opener 30, a large bin 40, a vibrating cotton box 50, a belt scale 60 and an air-laying mechanism 70 for vacuum insulation panel forming processing, wherein the air-laying mechanism 70 comprises an air-laying box 71 with an opening at the upper end and an opening at the lower end; a feeding device 10 arranged at one side of the feeding end of the uniform air-laying net box 71, and a raw material pretreatment device 72 for uniformly guiding pretreated raw materials into the uniform air-laying net box 71; the bottom of the air-homogenizing net cage 71 is provided with a net-forming output curtain 73 in a transmission way, the bottom of the net-forming output curtain 73 is provided with an air suction device 74 for uniformly adsorbing raw materials at the bottom of the net-forming output curtain 73, the waste recycling production system further comprises a material recycling mechanism, the material recycling mechanism comprises a dust removing device 83, the bottom of the air-homogenizing net cage 71 is connected with a gas collecting cover covered on the periphery of the air suction device 74 in a sealing way, the gas collecting cover is connected to one side of the air inlet end of the air suction device 74 through a first air guide pipe, gas exhausted by the air suction device 74 is intensively transmitted to the dust removing device 83 through the gas collecting cover to be discharged after being filtered, the tops of the large bin 40 and the vibrating cotton box 50 are provided with a pressure relief outlet which is connected to the dust removing device 83 to be discharged after being filtered through a pipeline, the net-forming output curtain 73 comprises a forming section arranged in the air-homogenizing net cage 71 and a gas collecting cover penetrating through the air-homogenizing net cage 71, the gas exhausted from the air collecting cover is arranged on the outer side of the air suction device 81, the suction hood is connected to one side of the air inlet end of the suction device 74 through a second air guide pipe, a corresponding residual material collector 82 is fixedly arranged on a position corresponding to the feeding end of the feeding device 10 through the second air guide pipe, the discharging end of the residual material collector 82 is connected to the feeding end of the feeding device 10, and the edges of the net forming output curtain 73 and the leakage of the air homogenizing net cage 71 are collected through the suction hood and then discharged into the feeding end of the feeding device 10 after being collected through the residual material collector 82.
Correspondingly, the dust removing device 83 corresponds to a dust removing section H1 in the whole production process, the feeding device 10, the bale opener 20 and the opener 30 correspond to an opening section H2, the large bin 40 corresponds to a cotton storage transfer section H3, the cotton vibrating box 50 corresponds to a belt scale 60 to be a uniform gram weight section H4, the air-laying mechanism 70 corresponds to an air-laying section H5, and the air-laying output curtain 73 is connected with a discharging transmission section to be an output section H6, and the H1-H6 form a complete production process.
In this embodiment, the gas collecting hood and the air suction hood are both visible in the drawings, and the reference numerals are not repeated for the sake of understanding the structure.
In the former feeding and opening process, in order to lay a foundation for later net forming, impurities and mixed cotton therein are separated only when the cotton is beaten into a looser state, specifically, the opening step is that the whole mass of glass fiber cotton is put into a feeding device 10 and is blown into an opener 20, the whole mass of glass fiber cotton is coarsely beaten by an internal beater in the opener 20 and is then blown into an opener 30, the cotton is stored into a large bin 40 after being subjected to fine rolling and tearing in the opener 30, when the gradual feeding is needed, the material is sucked out of the large bin 40 through a vibrating cotton box 50 and is fed into an air-laid mechanism 70 after the glass fiber cotton with corresponding gram weight is weighed on a belt scale 60, for example, the belt scale 60 can weigh the fiber cotton with corresponding gram weight when the cotton is required, but the formed cotton net on the belt scale 60 is required to be emphasized that the cotton with corresponding gram weight is quite uneven;
after the gram weight is weighed, if a conventional main cylinder net forming mode is adopted at this time, when mixed cotton masses and hard cotton masses which are crossed and disordered locally appear, the local part cannot be fully combed into net in high-speed operation, and phenomena such as uneven thickness and thickness of the cotton net, uneven gram weight, foaming, arching, layering, cotton mass increase and the like can appear, so that:
According to the invention, raw materials are sent into the uniform air-laying net box 71 in a throwing manner through the raw material pretreatment device 72, cotton falls onto a roller assembly uniformly under the centrifugal force and self gravity of the raw materials during throwing and the suction force of the suction device 74, is uniformly scattered through the poking plate 751 on the roller assembly and then is laid on the net-laying output curtain 73 to form a glass fiber felt, and is flattened through the final pressing curtain assembly 90 to form a finished glass fiber felt, so that the existing carding net-forming process is directly replaced, the fiber requirement and selection range of the fiber-laying net are enlarged through the raw material pretreatment device 72, and then the cotton is formed into a net along a plurality of positions of outlets of the roller assembly by utilizing the adsorption of the bottom suction device 74 and the multi-roller-surface rotation dispersion movement of the roller assembly, and the net-laying range of the outlet is large, so that a net-forming structure with uniform distribution is formed.
In the whole process of forming the web, as the glass fiber cotton is light in weight, and the whole process adopts an air flow conveying and web forming mode, the phenomenon of cotton wool splashing is unavoidable, if the cotton wool overflows, the cotton wool is easy to waste and is easy to pollute, and particularly in the corresponding step of the web forming output curtain 73, the overflow and waste take up a larger proportion, therefore, the embodiment adopts a recovery device for treatment, and the method comprises the following three steps:
1. The net forming output curtain 73 needs to be drawn down through the air suction device 74 in the net forming stage, and cotton is remained on the net forming output curtain 73 in the drawing down stage, but the drawn air has certain dust and trace cotton particles, so that the pollution to workshops and workers is very easy to cause.
2. In the process of outputting the glass fiber cotton through the net-forming output curtain 73 after net-forming, a certain amount of rim charge and leakage are reserved at the edge seams, if the rim charge and leakage are directly discharged to the outside, not only the running water of the raw materials is caused, but also the surrounding environment is easy to pollute, so that the invention can recycle the rim charge and leakage caused by the net-forming output curtain 73 by arranging the recycling device 81 on the side of the net-forming output curtain 73 and turning the rim charge and leakage to the feeding device 10 again through the recycling device 81, thereby improving the utilization rate of the raw materials, and further ensuring the recycling of the waste and leakage of the glass fiber cotton in the corresponding stage of the net-forming output curtain 73.
3. When the large bin 40 and the vibrating cotton box 50 are used for conveying glass fiber materials through the condenser at the top, the fibers are conveyed through the material conveying air pipe, the air quantity is relatively large, the fibers need to be slowly settled on a conveying curtain of equipment when conveyed to the large bin 40 or the vibrating cotton box 50, the air cannot be directly discharged to the atmosphere through an outlet of the condenser for pressure relief and wind power, and the environment pollution can be caused by fine cotton particles entrained in the outlet of the condenser, so that the pressure relief outlet of the large bin 440 and the vibrating cotton box 50 is communicated to the dust removing device 83, and the air is discharged to the atmosphere after being filtered by the dust removing device 83.
In this embodiment, the air suction device 74 is at least four fans capable of generating negative pressure, the air suction device 74 is located at the bottom of the whole air-homogenizing net cage 71, and negative pressure is required to be generated to suck cotton downwards, but if the top of the air-homogenizing net cage 71 is closed, the suction force caused by the air suction device 74 is limited, the cotton net cannot be uniform, if the power is forcedly increased, the air suction device 74 or the air-homogenizing net cage 71 can be damaged, so that the air-homogenizing net mechanism 70 further comprises an auxiliary structure arranged at the top opening of the air-homogenizing net cage 71, the auxiliary structure comprises an air supplementing structure 762 locked at the top of the inner side of the air-homogenizing net cage 71, and the air supplementing structure 762 can be a air supplementing machine or a simple opening, so long as the air suction device 74 can be promoted to generate negative pressure, thereby the air suction force which is more uniform and consistent with the strength to the cotton net and the uniform distribution of the cotton net can be promoted.
Because the feeding direction of the raw material pretreatment device 72 and the direction of the air suction device 74 are uncontrollable relative to the light raw material, unknown variables often exist in the uniform web forming process to cause uneven web formation, therefore, the auxiliary structure of the invention further comprises a plurality of air deflectors 761 movably mounted on the inner side wall of the uniform air forming net box 71, the air deflectors 761 are positioned below the air supplementing structure 762, gaps formed between the air deflectors 761 and the air deflectors 761 correspond to gaps between roller assemblies, the air deflectors 761 can guide the direction of wind entering from the air supplementing structure 762, the acting direction of the air suction device 74 is influenced, and when workers observe uneven web formation, the adsorption direction of the air suction device 74 is adjusted timely through the air deflectors 761, so that the direction of the air suction device 74 is more vector-releasing.
In the whole feeding process of the uniform air-laying box 71, the feeding direction of the raw materials fed by the raw material pretreatment device 72 affects the uniformity of the laying, and if the raw materials are fed in the whole strand, no matter how the roller assembly, the air suction device 74 and the auxiliary structure are in effort, uniform cotton web is difficult to obtain, and in this way, the uniform air-laying box 71 of the invention is close to one side opening of the belt scale 60, the raw material pretreatment device 72 is arranged in the opening, the raw material pretreatment device 72 comprises a group of feeding rollers 721 positioned at the tail end of the belt scale 60, the bottom-leaking guide cotton 723 is arranged below the carding roller 722 and fixedly connected to the air-homogenizing box 71, the raw material is flattened through a group of feeding rollers 721, the height of the raw material is compressed, and then the raw material is thrown out after being pricked by the carding roller 722 and guided by the bottom-leaking guide cotton 723, so that the raw material uniformly enters the air-homogenizing box 71, a good foundation is laid for web formation, the width spanned by the feeding roller 721 and the carding roller 722 is wide, the feeding angle of the fiber into the web can be enlarged, and the feeding route of the fiber is widened.
In order to make the bottom leakage guide cotton 723 smoother when outputting a parabola, the bottom leakage guide cotton 723 has an arc-shaped structure, and in order to make the bottom leakage guide cotton 723 have a larger feeding amount and a longer distance to be carried out by the carding roll 722 when discharging, the thickness of one end of the bottom leakage guide cotton 723 along the conveying direction is gradually increased.
The raw materials of feeding can break up through the roller subassembly, but roller subassembly is not the messy distribution, but has certain order to arrange, specifically, the roller subassembly includes at least two horizontal rollers 752 that the interval set up, horizontal roller 752 installs on a horizontal adjustment frame, the roller subassembly is further including the interval set up two perpendicular rollers 753 of horizontal roller 752 below, perpendicular rollers 753 install on a vertical adjustment frame, all peg graft on horizontal roller 752 and the perpendicular rollers 753 have a plurality of plectrum 751, and the roller subassembly divide into horizontal roller 752 at least, also can divide into horizontal roller 752 and perpendicular rollers 753, and the raw materials need break up just enough even through once at least, but the different vacuum insulation panels is different to the thickness requirement of inner core, so horizontal roller 752 can't be fixed with the position of perpendicular roller 753, need be through corresponding upper adjustment frame and lower adjustment frame to the activity regulation to let the distance between roller and the roller follow the distance between the roller and the roller, in order to adopt the manual operation to realize in advance in the embodiment or the fixed distance is also in the manual operation mode, realize in the fixed distance is realized in the fixed sliding rail of other embodiment or the realization.
The distance between the shifting sheets 751 and 751 can directly influence the uniformity of the cotton web, although the distance can be slightly different due to the gram weight of the cotton web, in practice, there are only two cases, firstly, the interval between the adjacent horizontal rollers 752 and the horizontal rollers 752 is smaller, or the interval between the adjacent horizontal rollers 752 and the vertical rollers 753 is smaller, and the two schemes can ensure that the adjacent shifting sheets 751 are spaced and oppositely arranged, the distance between the shifting sheets 751 is wider, so that the arrangement interval between the shifting sheets 751 can be larger, such as the interval between the shifting sheets 751 is 1 mm-180 mm, secondly, the interval between the adjacent horizontal rollers 752 and the horizontal rollers 752 is arranged, or the interval between the adjacent horizontal rollers 752 and the vertical rollers 753 is arranged, and at the moment, the arrangement interval between the shifting sheets 751 is smaller, such as the interval between the shifting sheets 751 is 1 mm-150 mm, the two schemes can ensure that the uniform cotton-beating of the shifting sheets can not generate mechanical interference, and each roller can independently rotate clockwise at the speed of-1100 min/r, or counter clockwise, and the speed of each roller can be adjusted independently or can rotate anticlockwise at the speed of 1100 min/r.
In other embodiments, in order to avoid fiber flowing around, the distance between the paddles 751 on the roller and the paddles 751 along the axial direction is 1 mm-10 mm, so that not only is fiber scattering effect realized, but also uniform and stable wind pressure is formed between the paddles 751 through air flow.
A sedimentation tank 77 is arranged between the top and the bottom-most roller wheels of the forming section of the net forming output curtain 73, the sedimentation tank 77 is used for communicating the inner space and the outer space of the uniform air forming net tank 71, the sedimentation tank 77 is of a stable pressure structure, the stable pressure is realized through gas exchange with outside air, the stability of the air flow speed and the air pressure and the stability of the fiber falling speed are key control areas, the air flow speed is controlled to be 5-20m/S, the air pressure is controlled to be 550Pa-1300Pa, and the air flow speed and the air pressure detection structure can be set.
In addition, the position of the air suction cover is also required to be additionally provided with an airflow speed and air pressure detection structure, the airflow speed is controlled to be 15-30m/S, and the air pressure is controlled to be 350Pa-700Pa.
After the air-laying mechanism 70 is adjusted, the web basically meets the requirement, but the last step is still to be performed, so that a pressing curtain assembly 90 is further arranged at the discharge end of the air-laying mechanism 70, the pressing curtain assembly 90 comprises a pressing curtain structure 91 positioned at the discharge end of the air-laying box 71, and a longitudinal adjusting structure 92 arranged at the top of the pressing curtain structure 91 and fixedly connected to the outer side of the air-laying box 71, specifically, the pressing curtain structure 91 comprises a large pressing roll 911 positioned at the discharge end of the air-laying box 71, a small pressing roll 913 connected with the large pressing roll 911 through a leather curtain, a strip 914 for loading the large pressing roll 911 and the small pressing roll 913, a connecting plate 915 fixedly connected with the strip 914, the longitudinal adjusting structure 92 comprises a chain 922 meshed with the connecting plate 915, the chain 922 is connected with a power element, the pressing curtain structure 91 can press the web through a leather curtain 912 to a certain extent, the web thickness of the web can be pressed to the inner core through the leather curtain 912, and the web can be further adjusted to a certain extent by the different thickness, even if the web is not pressed to the same as the web thickness of the web is adjusted to the web structure 91, or the web can be adjusted to a certain extent, and the web can be adjusted to the web thickness is not to the same as the web thickness is required.
Example two
The difference between the embodiment and the first embodiment is that the end of the pressing curtain assembly 90 away from the wind-homogenizing net cage 71 is further provided with a feedback assembly 1, the feedback assembly 1 comprises a portal frame 101 locked at the fixed ends of two sides of the net-homogenizing net cage 73, four infrared sensors 102 evenly hoisted on the portal frame 101, and limit piles 103 positioned at the front and rear sides of the bottom of the portal frame 101, the four infrared sensors 102 correspond to the positions corresponding to the four air suction devices 74, the four infrared sensors 102 can shoot on a cotton net, the uneven positions of the cotton net are defined at the positions corresponding to the air suction devices 74 according to the feedback time, if the cotton net is thicker, the power of the air suction devices 74 at the corresponding positions is properly increased, otherwise, the power of the air suction devices 74 at the corresponding positions is reduced;
In practice, however, the uneven position is defined only by the air suction device 74, which has a wider coverage, for this reason, the present embodiment further proposes that the feedback assembly 1 further includes a spring contact structure 104 movably mounted at the bottom of the gantry 101, the spring contact structure 104 is uniformly and densely arranged at the top of the web, the spring contact structure 104 includes a swing column 1041 hinged at the bottom of the gantry 101, a sliding vane 1042 hinged at the bottom of the swing column 1041, a piezoelectric sheet 1043 disposed between the swing column 1041 and the limiting pile 103, the piezoelectric sheet 1043 is electrically connected with the driving structure of the air deflector 761 on the corresponding straight line, when the web is of normal thickness, the top surface of the web contacts with the sliding vane 1042, so that the sliding vane 1042 drives the swing column 1041 to slightly press the piezoelectric sheet 1043, therefore, the thickness of the cotton web is normal at this time, and in the case of thinner cotton web, the sliding vane 1042 has no external stress at this time, and is kept motionless under the condition of gravity, then the piezoelectric sheet 1043 is electrified, so that the thickness of the cotton web is lower at this time, the angle of the inclined air deflector 761 is required to enable the position to receive less wind, and if the cotton web is thicker, the contact area between the sliding vane 1042 and the cotton web is enlarged, the corresponding limit pile 103 is stressed more, the threshold value of the piezoelectric sheet 1043 is directly triggered, so that the air deflector 761 is inclined, the wind force received at the position is maximized, and the thickness of the cotton web is pressed, and the optimal inclination angle of the air deflector 761 and the optimal output power of the air suction device 74 can be obtained through repeated tests for many times.
It should be emphasized that the swing post 1041 is made of a light material, so that the swing post 1041 will swing under the contact of a light web, so that in order to avoid the swing post 1041 from being interfered by external wind or other external factors, the outer side of the swing post 1041 is provided with a limit pile 103 as a windshield, thereby reducing the probability of erroneous judgment.
Example III
In another embodiment of the present invention, there is also provided a method for recycling and producing core materials of vacuum insulation panels, the method for recycling and producing core materials of vacuum insulation panels using the above-mentioned system, comprising the steps of:
S1, feeding glass fiber cotton into a uniform air-laying net cage 71 through a raw material pretreatment device 72, scattering the glass fiber cotton in the uniform air-laying net cage 71 through rollers, uniformly adsorbing the glass fiber cotton on a net-laying output curtain 73 by negative pressure of an air suction device 74, and conveying the glass fiber cotton out of the uniform air-laying net cage 71 through the net-laying output curtain 73;
s2, sucking the leftovers of the net forming output curtain 73 and the fiber cotton leaked out of the outer side of the air homogenizing net forming box 71 to a leftover collector 82, and then putting the leftover into the feeding device 10 for recycling;
S3, introducing the air flow extracted by the air suction device 74 into the dust removing device 83 through a pipeline, filtering and purifying, and then discharging the air flow to the atmosphere;
S4, directly putting unqualified defective products which are formed into a net in the net forming output curtain 73 into the feeding device 10 for recycling;
S5, communicating the pressure release outlet at the top of the large bin 40 and the vibrating cotton box 50 to the dust removing device 83 through an air pipe, filtering and purifying, and then discharging to the atmosphere.
Further, the step S1 comprises the steps of supplementing air at the top of the air homogenizing net cage 71, and enabling the supplemented air to act on the glass fiber cotton after being guided by the air deflector 761.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
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| ES2397695T3 (en) * | 2003-01-22 | 2013-03-08 | A. Celli Nonwovens S.P.A. | Device for dry forming a fiber network with an innovative suction box and associated procedure |
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