Vacuum insulation panel core material waste recycling production system and method thereof

Abstract

The application discloses a kind of vacuum insulation board core material waste recovery production system and method thereof, including airflow laying mechanism for vacuum insulation board forming processing, waste recovery production system further includes material recycling mechanism, material recycling mechanism includes dust removal device and excess material recovery device, the bottom of even air laying box is closedly connected with the gas collection hood covered on the periphery of suction device, the gas collection hood is connected to the air intake end side of suction device by first air duct, the gas discharged by suction device is concentrated and transmitted to dust removal device by gas collection hood and then discharged, after curtain edge material of laying output and even air laying box leakage material are collected by suction hood, excess material collector is used to collect and then discharge into the feed end of feeding device, glass fiber waste recycling and reuse can be realized in production process, and the vacuum insulation board made has the characteristics of low thermal conductivity, low finished product density, good flatness and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of production of vacuum insulation board, in particular a kind of vacuum insulation board core material waste recycling production system and method thereof. BACKGROUND

[0002] Vacuum insulation board is one of vacuum thermal insulation materials, which is composed of filling core material, gas adsorbent and barrier bag, and is widely used in various industries. The internal core structure of vacuum insulation board is composed of multiple layers of glass fiber mats with certain thickness and gram weight. Therefore, the preparation of glass fiber mat is a key link in the production of vacuum insulation board. In the existing glass fiber mat processing process, the carding method is mainly used. The required glass fiber mat is formed by carding through the main cylinder, working roller and stripping roller. The glass fiber mat is reciprocally stacked by a laying machine to form a glass fiber mat with certain thickness, large gram weight ratio and uniform gram weight. Then, through processes such as hot pressing and cutting, the filling core material required for the production of vacuum insulation board is formed. The filling core material is placed in the barrier bag and forms the vacuum insulation board through vacuum packaging. The vacuum insulation board requires low thermal conductivity, good flatness and low density.

[0003] Although glass fiber mats can be prepared, there are the following hidden dangers:

[0004] During the carding process, when large cotton balls, edge material cotton, waste cotton and mixed material enter the carding machine again, the following phenomena may occur: uneven thickness of the cotton web, uneven gram weight, bubbling, arching, layering, and increase in cotton balls. This affects the production efficiency, increases the labor cost, and affects the production environment.

[0005] 1. By the carding method, a large amount of cotton fluff is generated during the mechanical movement of the cotton. Without auxiliary dust removal devices, the production environment is affected, solid powder pollution is generated, and personal health is affected.

[0006] 3. By the carding method, the fibers are carded along the circumferential needle cloth range of the main cylinder during carding. The outlet webbing range is small. When the cotton appears in the form of mixed cotton balls, hard cotton balls and local cross-mixed cotton balls, the local cotton cannot be fully carded at high speed. This may cause uneven thickness of the cotton web, uneven gram weight, bubbling, arching, layering, and increase in cotton balls. These may affect the flatness and thermal conductivity requirements of the vacuum insulation board, and reduce the yield of the vacuum insulation board.

[0007] 4. By the carding method, the fibers are damaged during the carding movement between the main cylinder and the carding roller. This may form powder particles of the fibers, and the density of the prepared vacuum insulation board is high (350-420 kg / m 3 , and the cost is high.

[0008] 5. The glass fiber raw material selection range of the method is small, and the raw material for the carding is usually short cut glass fiber with a diameter of 6-20 um and a length of 30-65 mm, the carding is relatively uniform, but when the fiber length is shorter, the fiber length is 5-30 mm, the fiber carding is unable to be held and carded, the fiber carding shows obvious unidirectionality, the heat insulation performance is relatively poor, the thermal conductivity of the vacuum insulation board is 1.8-2.5 mw / m.k, and the thermal conductivity is high.

[0009] Therefore, the application aims to provide a vacuum insulation board core material waste recycling production system and method, and improve the solid powder pollution caused by the cotton produced in the traditional carding process. The air flow carding can not only meet the carding requirements, but also reduce the density (270-300 kg / m 3 ), reduce the thermal conductivity (1.2-1.5 mw / m.k), improve the product quality and economy, reduce the environmental pollution through the circulation and dust removal of the air flow, create a good working environment, and expand the application range of the carding glass fiber, such as short cut glass fiber with a diameter of 6-20 um and a length of 5-85 mm, centrifugal cotton with a diameter of 3-15 um and a length of 5-65 mm, etc. SUMMARY

[0010] The application provides a vacuum insulation board core material waste recycling production system and method, which can effectively solve the above problems.

[0011] The application is implemented as follows:

[0012] A vacuum insulation board core material waste recycling production system, comprising a feeding device, an unpacking machine, an opener, a large bin, a cotton vibrating box, a belt scale, and an air flow carding mechanism for vacuum insulation board forming processing, the air flow carding mechanism comprises a uniform air flow carding box with an upper opening and a lower opening; a feeding device arranged on one side of the feeding end of the uniform air flow carding box, and a raw material pretreatment device for uniformly guiding the pretreated raw material into the uniform air flow carding box; a carding output curtain is drivingly installed at the bottom of the uniform air flow carding box, and an air suction device for uniformly adsorbing the raw material at the bottom of the carding output curtain is arranged at the bottom of the carding output curtain; the waste recycling production system further comprises a material circulation and recycling mechanism, and the material circulation and recycling mechanism comprises:

[0013] A dust removal device, a gas collection hood covering the periphery of the air suction device is connected to the bottom of the uniform air flow carding box, the gas collection hood is connected to one side of the air inlet end of the air suction device through a first air duct, the gas discharged from the air suction device is concentrated and transmitted to the dust removal device through the gas collection hood, and then filtered and discharged; a pressure relief outlet is formed in the top of the large bin and the cotton vibrating box, and the pressure relief outlet is connected to the dust removal device through a pipeline for filtering and then discharging;

[0014] The excess material recycling device, the web output curtain comprises a forming section arranged in the air leveling web box, and a material output conveying section arranged outside the air leveling web box, the excess material recycling device comprises an air suction cover arranged on the upper side of the material output conveying section, the air suction cover is connected to the air suction device through a second air guide pipe on the side of the air inlet end, and the second air guide pipe is fixed with a corresponding excess material collector at a position corresponding to the material inlet end of the material inlet device, the material outlet end of the excess material collector is connected to the material inlet end of the material inlet device, the web output curtain edge material and the air leveling web box leakage material are collected by the air suction cover and then collected by the excess material collector and discharged into the material inlet end of the material inlet device.

[0015] As a further improvement, the air laying mechanism further comprises an auxiliary structure arranged at the top opening of the air leveling web box, the auxiliary structure comprises a supplementary air structure fixed to the top inside of the air leveling web box and a plurality of air guide plates movably mounted on the inner wall of the air leveling web box, the air guide plates are located below the supplementary air structure.

[0016] As a further improvement, one side opening of the air leveling web box is a material inlet end, the raw material pretreatment device is arranged in the material inlet end, the raw material pretreatment device comprises a group of feed rollers located at the end of the belt scale, a carding roller arranged at intervals on the lateral side of the feed rollers, a leakage bottom guide cotton arranged below the carding roller and fixed to the air leveling web box, the leakage bottom guide cotton is an arc structure, and the thickness of the leakage bottom guide cotton gradually increases at one end along the conveying direction.

[0017] As a further improvement, the roller assembly comprises at least two horizontally arranged rollers arranged at intervals, the horizontally arranged rollers are mounted on a transverse adjusting frame, the roller assembly further comprises at least two vertically arranged rollers arranged at intervals below the two horizontally arranged rollers, the vertically arranged rollers are mounted on a longitudinal adjusting frame, and a plurality of paddles are inserted into the horizontally arranged rollers and the vertically arranged rollers.

[0018] As a further improvement, adjacent horizontally arranged rollers and horizontally arranged rollers are arranged at intervals, or adjacent horizontally arranged rollers and vertically arranged rollers are arranged at intervals, adjacent paddles are arranged at intervals and opposite to each other, and the interval distance between the paddles is 1mm-180mm.

[0019] As a further improvement, adjacent horizontally arranged rollers and horizontally arranged rollers are arranged at intervals, or adjacent horizontally arranged rollers and vertically arranged rollers are arranged at intervals, adjacent paddles are arranged at intervals and opposite to each other, and the interval distance between the paddles is 1mm-180mm.

[0020] As a further improvement, a drop box is arranged between the top roller and the bottom roller of the web output curtain forming section, and the drop box is used to communicate the inner and outer spaces of the air equalization web box.

[0021] As a further improvement, the system further comprises a press curtain assembly, which comprises a press curtain structure arranged at the discharge end of the air equalization web box, and a longitudinal adjustment structure arranged at the top of the press curtain structure and fixed to the outside of the air equalization web box.

[0022] The application also provides a vacuum insulation panel core material waste recycling production method, which applies the vacuum insulation panel core material waste recycling production system.

[0023] S1: The glass fiber cotton is fed into the air equalization web box through the raw material pretreatment device, and is uniformly webbed on the web output curtain by the negative pressure suction of the suction device after being scattered by the roller in the air equalization web box, and is conveyed to the outside of the air equalization web box through the web output curtain.

[0024] S2: The edge material of the web output curtain and the fiber cotton leaking outside the air equalization web box are sucked into the excess material collector and then recycled into the feeding device.

[0025] S3: The air flow sucked by the suction device is introduced into the dust removal device through the pipeline for filtration and purification, and then discharged into the atmosphere.

[0026] S4: The unqualified defective products webbed in the web output curtain are directly put into the feeding device for recycling.

[0027] S5: The pressure relief outlet at the top of the large bin and the vibrating cotton box is connected to the dust removal device through the air pipe for filtration and purification, and then discharged into the atmosphere.

[0028] As a further improvement, the S1 further comprises: air supplementing at the top of the air equalization web box, and the supplemented air is guided by the air deflector and acts on the glass fiber cotton.

[0029] The application has the following beneficial effects:

[0030] The application puts the unopened glass fiber cotton into the feeding device, and the glass fiber cotton is fed into the opening machine through the feeding device, and is roughly beaten in the opening machine by the internal beater, and is blown to the opening machine, and is precisely beaten in the opening machine by the roller tearing, and is stored in the large bin, when the step feeding is needed, the large bin sends the glass fiber cotton to the vibrating cotton box through the conveying fan, and the corresponding glass fiber cotton of the gram weight is weighed on the belt scale, and then is fed into the air-laid mechanism, at this time, if the conventional main cylinder carding air-laid method is used, the cotton appears in the local cross-mixed cotton ball, hard cotton ball, and the local cannot be fully carded in the high-speed operation, and the cotton web is uneven, the gram weight is uneven, the bubble is generated, the arch is generated, the layering is generated, the cotton ball is increased, and the like, and therefore:

[0031] The application realizes the uniform air-laid of the glass fiber cotton through the air-laid method, and simultaneously carries out the environmental dust removal treatment through the air flow movement, and specifically, the raw material is sent into the uniform air-laid box through the raw material pretreatment device in the throwing manner, the cotton is uniformly dropped onto the roller assembly under the action of the centrifugal force in the throwing, the self-gravity and the suction force of the suction device, is uniformly scattered on the air-laid output curtain after the uniform scattering of the roller assembly, and is air-laid to form the glass fiber felt, and is flattened after the last pressing curtain assembly, to form the finished product of the glass fiber felt, which directly replaces the existing carding air-laid process, first expands the fiber requirements and selection range of the fiber air-laid through the raw material pretreatment device, and then realizes the air-laid of the cotton along the multiple roller surfaces and multiple position outlets through the adsorption of the bottom suction device and the multiple roller surface rotation dispersion movement of the roller assembly, the air-laid range is large, and the uniform distribution of the air-laid structure is formed

[0032] Different from the one-way distribution of the carded air-laid fiber, the air-laid fiber is randomly distributed along the X-axis, Y-axis and Z-axis directions, the interweaving force between the fibers is improved, the air permeability is increased, the density of the vacuum insulation board is low, the cost is reduced, the thermal conductivity coefficient is reduced, and the energy saving effect is achieved.

[0033] After the air-laid method of the uniform air-laid box is adopted, the material leakage is easy to occur between the air-laid output curtain and the uniform air-laid box, the edge material waste phenomenon is easy to occur, and the wind discharged by the suction device also easily affects the external environment, for this, the application further sets the material recycling mechanism on the basis of the uniform air-laid, and specifically:

[0034] In the whole air-laid process, since the air-laid cotton on the two side walls of the equipment is relatively thin and uneven, the application connects the two sides of the uniform air-laid box close to the one end of the discharge port to a surplus material collector, can collect the edge material into the surplus material collector and re-input into the feeding device, and then circulate into the air-laid system through the opening machine, the opening machine, the large bin and the vibrating cotton box, to realize the secondary utilization of the edge material.

[0035] The webbing output curtain in the application adopts conveying type webbing, so there is a certain gap between the uniform air webbing box and the webbing output curtain, that is, there are apertures between the equipment movement mechanism and the external environment, and a small amount of cotton will leak out during the webbing process, and the leaked cotton will also be collected in the excess material collector and then be put into the feeding device again through the bale opener, the opener, the large bin, the vibrating cotton box, and then recycled into the webbing system to realize the secondary utilization of the leaked material.

[0036] During the webbing process, a small amount of glass fiber cotton filaments will be discharged through the gap of the curtain eye of the webbing output curtain due to the suction of the air suction structure, and if directly discharged into the atmosphere, it will be easily inhaled by workers or cause pollution, so the air current sucked by the air suction device at the bottom of the webbing output curtain in the application is not directly discharged into the atmosphere, but is transported to the dust removal device through the second air pipe and the auxiliary fan, and is collected through the multiple filter screens inside the dust removal device, and is cleaned regularly, so that the cotton filament pollution of the air environment can be avoided and the cleanliness of the workshop can be ensured.

[0037] The glass fiber material is transported through the top condensing cotton device of the large bin and the vibrating cotton box, the fiber transports the material through the material conveying air pipe, the air volume is relatively large, and when transported to the large bin or the vibrating cotton box, it needs to be slowly settled on the conveying curtain of the equipment, the condensing cotton device outlet of the pressure relief air cannot directly discharge the gas into the atmosphere, and the internal entrainment of fine cotton particles will cause environmental pollution, so the pressure relief outlet of the large bin and the vibrating cotton box is connected to the dust removal device, and the gas is discharged into the atmosphere after being filtered by the dust removal device.

[0038] After the production is completed, part of the unqualified vacuum insulation board internal core material, such as bulge, air leakage, poor edge sealing, unqualified flatness, and long-term failure, will be wasted if directly discarded as waste, and the application can return the unqualified vacuum insulation board internal core material to the feeding device, so that it can be recycled into the webbing system through the bale opener, the opener, the large bin, the vibrating cotton box, and the belt scale, to realize the secondary utilization of the defective products.

[0039] During actual use, due to the negative pressure suction force formed by the recovery device in the latter half of the webbing output curtain, the just-formed cotton webbing is more likely to deform and collapse under the action of the recovery device, which directly affects the webbing effect of the air flow webbing mechanism, so the application introduces a supplementary air structure and a wind deflector, which can balance and promote the webbing effect caused by the air suction device, thereby restricting the suction force of the recovery device, and avoiding damage to the web surface during the recovery of the edge material and the leaked material.

[0040] The air suction device is located at the bottom of the whole air uniformizing forming box, and it needs to generate negative pressure to suck the cotton downward, but if the top of the air uniformizing forming box is closed, the suction force caused thereby is limited, and the cotton web cannot be uniformized, therefore, the air supplement structure is further arranged at the top of the inner side of the air uniformizing forming box, which can be an air supplement fan or a simple open port, as long as it can promote the negative pressure generated by the air suction device, so that the air suction device can generate more uniform and strength-conforming suction force on the cotton web, and promote the uniform distribution of the cotton web.

[0041] Since 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 process of uniform web forming, which causes the cotton web to be uneven, therefore, the auxiliary structure in the application further comprises a wind guide plate, which can guide the direction of the wind entering from the air supplement structure, and further affect the action direction of the air suction device, so that when the worker observes that the cotton web is uneven, the suction direction of the air suction device can be adjusted in time through the wind guide plate, so that the direction of the air suction device is more targeted.

[0042] During the feeding process of the whole air uniformizing forming box, the direction of the raw material fed by the raw material pretreatment device will affect the uniformity of web forming, if the feeding is directly in the form of a whole strand, it is difficult to obtain a uniform cotton web no matter how the roller assembly, the air suction device and the auxiliary structure work, therefore, the application first flattens the raw material through a group of feeding rollers, compresses the height of the raw material, and then the carding roller throws the raw material after guiding the cotton through the perforated bottom, so that the raw material enters the air uniformizing forming box uniformly, laying a good foundation for web forming, and the width of the feeding roller and the carding roller is wide, which can expand the feeding angle of the fiber into the web, thereby widening the feeding route.

[0043] The fed raw material will be scattered by the roller assembly, but the roller assembly is not randomly distributed, but arranged in a certain order, the roller assembly is at least divided into horizontal rollers, and can also be divided into horizontal rollers and vertical rollers, that is, the raw material needs to be scattered at least once to be uniform enough, but different vacuum insulation boards have different thickness requirements for the inner core, therefore, the positions of the horizontal rollers and the vertical rollers cannot be fixed, and need to be adjusted by the corresponding upper adjusting frame and lower adjusting frame to move and adjust, so that the distance between the rollers meets the production requirements.

[0044] The distance between the poking pieces will directly affect the uniformity of the cotton web, although the distance will be slightly different due to the weight of the cotton web, but in fact, there are only two cases, one is that the adjacent horizontal rollers are arranged at intervals, or the adjacent horizontal rollers and vertical rollers are arranged at intervals, the adjacent poking pieces are arranged at intervals and opposite to each other, the distance between the poking pieces is wide, so the setting interval between the poking pieces can be large, such as the interval distance between the poking pieces is 1mm-180mm, the other is that the adjacent horizontal rollers are arranged at intervals, or the adjacent horizontal rollers and vertical rollers are arranged at intervals, the adjacent poking pieces are staggered, at this time, the setting interval between the poking pieces is small, such as the staggered distance between the poking pieces is 1mm-150mm, the two schemes can uniformly sweep the cotton without mechanical interference.

[0045] After the adjustment of the air laying mechanism, the cotton web basically meets the requirements, but still needs to be checked in the last step, so the pressure curtain structure is arranged at the discharge end of the air laying mechanism, the pressure curtain structure can press the cotton web through the leather curtain, and the thickness of the cotton web is pressed to meet the requirements, since the thickness of the glass fiber web required by different cores is different, the longitudinal adjusting structure is arranged at the upper end of the pressure curtain structure, which can drive the pressure curtain structure to move upward or downward, so as to adjust the action height of the leather curtain, even in the face of cotton web with different thickness requirements, the leather curtain can also play a certain role. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0047] Fig. 1 is a front view structural schematic diagram of a vacuum insulation board core material waste recycling production system provided by the present application.

[0048] Fig. 2 is a structural schematic diagram of an air laying mechanism provided by the present application.

[0049] Fig. 3 is a top view structural schematic diagram of a roller assembly (first state) provided by the present application.

[0050] Fig. 4 is a top view structural schematic diagram of a roller assembly (second state) provided by the present application.

[0051] Fig. 5is a structural schematic view of a feedback assembly provided by Embodiment Two of the present application.

[0052] Fig. 6 is a module diagram of a vacuum insulation panel core material waste recycling production method provided by the present application. DETAILED DESCRIPTION

[0053] For the embodiments of the present application, all fall within the scope of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only to represent selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0054] In the description of the present application, the terms "first", "second" are only used for the purpose of description, and cannot be understood as the purpose of indicating the manner, the technical solutions and advantages are more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below, it is obvious that the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application. The number of technical features indicated by the relative importance or implicit indication is indicated. Therefore, the features with "first", "second" can be explicitly or implicitly included one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0055] Embodiment One

[0056] Reference Figs. 1-6As shown, a vacuum insulation board core material waste recycling production system, comprising a feeding device 10, an unpacking machine 20, an opener 30, a large bin 40, a cotton vibrating box 50, a belt scale 60, and an air-laid mechanism 70 for vacuum insulation board forming processing, the air-laid mechanism 70 comprises a top and bottom open air equalization box 71; the feeding device 10 is arranged on one side of the air equalization box 71 at the feeding end, and a raw material pretreatment device 72 is used to uniformly guide the pretreated raw material into the air equalization box 71; the bottom of the air equalization box 71 is drivingly installed with a web output curtain 73, and the bottom of the web output curtain 73 is provided with an air suction device 74 for uniformly adsorbing the raw material on the bottom of the web output curtain 73; the waste recycling production system further comprises a material recycling mechanism, which comprises: a dust removal device 83, the bottom of the air equalization box 71 is closed and connected with a gas collection hood covering the periphery of the air suction device 74, the gas collection hood is connected to one side of the air inlet end of the air suction device 74 through a first air duct, and the gas discharged from the air suction device 74 is concentrated and transmitted to the dust removal device 83 for filtration and then discharged, a pressure relief outlet is formed in the top of the large bin 40 and the cotton vibrating box 50, and the pressure relief outlet is connected to the dust removal device 83 through a pipeline for filtration and then discharged; a surplus material recycling device 81, the web output curtain 73 comprises a forming section arranged in the air equalization box 71 and a discharging conveying section arranged outside the air equalization box 71, the surplus material recycling device 81 comprises an air suction hood arranged on the upper side of the discharging conveying section, the air suction hood is connected to one side of the air inlet end of the air suction device 74 through a second air duct, and the second air duct is fixed with a corresponding surplus material collector 82 at a position corresponding to the feeding end of the feeding device 10, the discharging end of the surplus material collector 82 is connected to the feeding end of the feeding device 10, and the edge material of the web output curtain 73 and the leakage material of the air equalization box 71 are collected by the air suction hood, then collected by the surplus material collector 82 and discharged into the feeding end of the feeding device 10.

[0057] Correspondingly, the dust removal device 83 corresponds to the dust removal section H1 in the entire production process, the feeding device 10, the unpacking machine 20 and the opener 30 correspond to the opening section H2, the large bin 40 corresponds to the cotton storage and transfer section H3, the cotton vibrating box 50 and the belt scale 60 correspond to the uniform weight section H4, the air-laid mechanism 70 corresponds to the air-laid section H5, and the output section H6 is connected to the discharging conveying section of the web output curtain 73, and H1-H6 constitute a complete production process.

[0058] In this embodiment, the gas collection hood and the air suction hood can be seen in the figure, and the structure is understandable, so no further description is given.

[0059] In the process of the previous feeding opening cotton, it is actually to lay the foundation for the later web forming, only when the cotton is beaten into a more loose state, the impurities and mixed cotton in it can be separated more open, the specific opening cotton steps are: the whole glass fiber cotton is put into the feeding device 10 and blown into the bale breaker 20, the bale breaker 20 is rough beaten by the internal beater and blown into the opener 30, the opener 30 is stored in the large bin 40 after being torn by the roller, when the step-by-step feeding is needed, the material is sucked out from the large bin 40 through the vibrating cotton box 50 and the corresponding glass fiber cotton of the weight is weighed on the belt scale 60 and then fed into the air laying mechanism 70, for example, 80 grams of cotton net is needed at this time, the belt scale 60 will weigh the corresponding weight of the fiber cotton, but it needs to be emphasized that the cotton net formed on the belt scale 60 at this time is very uneven, only the weight is corresponding;

[0060] After weighing the weight, if the conventional main cylinder web forming method is used at this time, the cotton will appear cross mixed cotton ball, hard cotton ball in local, local cannot be fully carded into a web in high speed operation, and the cotton net will appear uneven thickness, uneven weight, blistering, arching, delamination, cotton ball increase and other phenomena, therefore:

[0061] The raw material is sent into the uniform air laying box 71 by the raw material pretreatment device 72 in the form of throwing, the cotton is uniformly dropped onto the roller assembly under the action of the centrifugal force of throwing, the weight of the cotton itself and the suction force of the suction device 74, is uniformly scattered on the web output curtain 73 after the paddle 751 on the roller assembly, and is laid on the web to form a glass fiber mat, and then is flattened by the last pressing curtain assembly 90 to form a finished glass fiber mat, which directly replaces the existing carding web process, first expands the fiber requirements and selection range of the fiber into the web through the raw material pretreatment device 72, and then uses the adsorption of the bottom suction device 74 and the multi-roller surface rotating dispersion motion of the roller assembly to realize the web forming along the multiple roller surface and multiple position outlets, the outlet web forming range is large, and a uniform distribution of web forming structure is formed.

[0062] In the whole web forming process, due to the light weight of the glass fiber cotton, and the whole process is in the form of air conveying and web forming, it is inevitable that the cotton flock will fly and spill, if the cotton flock spills out, it will not only cause waste, but also easily cause pollution, especially in the corresponding step of the web output curtain 73, the proportion of spilling and wasting is larger, for this, the recycling device is used for processing, which is specifically divided into the following three steps:

[0063] I. The webbing output curtain 73 needs to be drawn down by the air suction device 74 during the webbing stage. Although the cotton is left on the webbing output curtain 73 during the drawing-down stage, the air drawn out at this time contains a certain amount of dust and a small amount of cotton particles, which can easily pollute the workshop and workers. To this end, the end of the air suction device 74 is connected to the dust removal structure 83, and the air drawn out from the air distribution webbing box 71 is directly introduced into the dust removal structure 83 before being discharged into the atmosphere, thereby avoiding pollution of the workshop and the surrounding environment and workers.

[0064] II. During the output process after webbing through the webbing output curtain 73, there are some edge materials and leakage materials in the edge seams. If this part is directly discharged to the outside, not only will it cause the flow of raw materials, but it will also easily pollute the surrounding environment. Therefore, the recycling device 81 is provided on the side of the webbing output curtain 73, and the edge materials and leakage materials caused by the webbing output curtain 73 can be recycled again by the recycling device 81 and returned to the feeding device 10 for recycling, thereby improving the utilization rate of raw materials and ensuring the recycling of waste materials and leakage materials of glass fiber cotton during the corresponding stage of the webbing output curtain 73.

[0065] III. The large bin 40 and the vibrating cotton 50 box are connected to the top condensing cotton device, which conveys glass fiber materials. The fiber is conveyed by the material conveying air pipe, and the air volume is relatively large. When conveying to the large bin 40 or the vibrating cotton box 50, it needs to slowly settle on the conveying curtain of the equipment. The condensing cotton device outlet cannot directly discharge gas into the atmosphere, and the internal entrainment of fine cotton particles will cause environmental pollution. Therefore, the pressure relief outlet of the large bin 40 and the vibrating cotton box 50 is connected to the dust removal device 83, and the filtered air is discharged into the atmosphere.

[0066] 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 entire air distribution webbing box 71, and it needs to generate negative pressure to suck the cotton downward. However, if the top of the air distribution webbing box 71 is closed, the suction force will be limited, and the cotton webbing will not be uniform. If the power is forcibly increased, the air suction device 74 itself or the air distribution webbing box 71 will be damaged. Therefore, the airflow webbing mechanism 70 further includes an auxiliary structure provided at the opening at the top of the air distribution webbing box 71. The auxiliary structure includes a supplementary air structure 762 locked on the inside top of the air distribution webbing box 71. The supplementary air structure 762 can be a supplementary air fan or a simple open port, as long as it can promote the generation of negative pressure by the air suction device 74, so that the air suction device 74 can generate a more uniform and strength-conforming suction force on the cotton webbing, promoting the uniform distribution of the cotton webbing.

[0067] Since 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 weight raw material, unknown variables often exist in the process of uniform webbing, which causes the web to be uneven, therefore the auxiliary structure of the application further comprises a plurality of air deflectors 761 movably mounted on the inner side wall of the uniform air webbing box 71, the air deflectors 761 are located below the air supplement structure 762, the gaps formed between the air deflectors 761 correspond to the gaps between the roller assemblies, the air deflectors 761 can guide the direction of the air entering from the air supplement structure 762, thereby affecting the direction of the air suction device 74, so that the worker can timely adjust the suction direction of the air suction device 74 through the air deflectors 761 when observing that the web is uneven, and the direction of the air suction device 74 is more targeted.

[0068] During the feeding process of the entire uniform air webbing box 71, the direction of the raw material fed by the raw material pretreatment device 72 will affect the uniformity of webbing, if the feeding is directly in the form of a whole strand, it is difficult to obtain a uniform web no matter how the roller assembly and the air suction device 74 and the auxiliary structure strive, for this, the uniform air webbing box 71 of the application is opened on the side close to the belt scale 60, the raw material pretreatment device 72 is installed in the opening, the raw material pretreatment device 72 comprises a group of feeding rollers 721 located at the end of the belt scale 60, a carding roller 722 arranged at intervals on the lateral side of the feeding roller 721, a bottom guide 723 arranged below the carding roller 722 and fixed on the uniform air webbing box 71, first, the raw material is flattened by a group of feeding rollers 721, the height of the raw material is compressed, then the raw material is thrown out after being guided by the bottom guide 723 after being laced by the carding roller 722, so that the raw material enters the uniform air webbing box 71 uniformly, laying a good foundation for webbing, and the width of the feeding roller 721 and the carding roller 722 is wide, which can expand the feeding angle of the fiber into the web, thereby widening the feeding route.

[0069] In order to make the bottom guide 723 more smooth when outputting a parabola, the bottom guide 723 is an arc structure, in order to make the bottom guide 723 have a greater thickness at one end along the conveying direction as the feeding amount increases, and the distance carried out by the carding roller 722 is farther when discharging.

[0070] The feeding raw material will be scattered by the roller assembly, but the roller assembly is not randomly distributed, but arranged in a certain order. Specifically, the roller assembly at least includes two horizontally arranged rollers 752, the horizontal rollers 752 are installed on a transverse adjusting frame, the roller assembly further includes two vertically arranged rollers 753 arranged below the two horizontal rollers 752, the vertical rollers 753 are installed on a longitudinal adjusting frame, and the horizontal rollers 752 and the vertical rollers 753 are inserted with a plurality of paddles 751. The roller assembly is at least divided into horizontal rollers 752, and can also be divided into horizontal rollers 752 and vertical rollers 753, that is, the raw material needs to be scattered at least once to be uniform enough. However, different vacuum insulation boards have different thickness requirements for the inner core, so the positions of the horizontal rollers 752 and the vertical rollers 753 cannot be fixed and need to be adjusted by the corresponding upper adjusting frame and lower adjusting frame to adjust the distance between the rollers to meet the production requirements. In this embodiment, the distance is locked and fixed by manual pre-measurement, while in other embodiments, a certain sliding block or sliding rail structure can be provided to realize horizontal or vertical distance adjustment, or an electric control mode can be adopted.

[0071] The distance between the paddles 751 directly affects the uniformity of the cotton web. Although the weight of the cotton web causes some differences in the distance, in fact, there are only two cases. One is that the adjacent horizontal rollers 752 are arranged at intervals, or the adjacent horizontal rollers 752 and vertical rollers 753 are arranged at intervals, and the adjacent paddles 751 are arranged at intervals and opposite to each other. The distance between the paddles 751 is wide, so the setting interval between the paddles 751 can be large, such as 1mm-180mm. The second is that the adjacent horizontal rollers 752 are arranged at intervals, or the adjacent horizontal rollers 752 and vertical rollers 753 are arranged at intervals, and the adjacent paddles 751 are arranged at intervals. At this time, the setting interval between the paddles 751 is small, such as 1mm-150mm. The above two schemes can uniformly sweep the cotton without mechanical interference. The speed of each roller can be adjusted independently, 450r / min-1100r / min, and the roller can rotate counterclockwise or clockwise.

[0072] In other embodiments, in order to avoid and prevent fiber flow, the distance between the paddles 751 on the roller along the axial direction is 1mm-10mm, which not only realizes the scattering of fibers, but also forms uniform and stable air pressure between the paddles 751 through air flow.

[0073] A settling tank 77 is arranged between the top and the bottom roller of the forming section of the web output curtain 73, and is used to communicate the inner and outer space of the air equalizing forming tank 71. The settling tank 77 is substantially a pressure stabilizing structure, and the pressure stabilization is achieved by gas exchange with the outside air. The key control areas are the stability of the air flow speed and the air pressure, and the stability of the fiber falling speed. The air flow speed at this position is controlled at 5-20 m / S, and the air pressure is controlled at 550 Pa-1300 Pa. The air flow speed and air pressure detection structure can be arranged.

[0074] Also, the air flow speed and air pressure detection structure also needs to be added at the position of the air suction hood. The air flow speed at this position is controlled at 15-30 m / S, and the air pressure is controlled at 350 Pa-700 Pa.

[0075] After the adjustment of the air laying mechanism 70, the web basically meets the requirements, but still needs to be checked in the last step. Therefore, a pressing curtain assembly 90 is arranged at the discharge end of the air laying mechanism 70. The pressing curtain assembly 90 includes a pressing curtain structure 91 at the discharge end of the air equalizing forming tank 71, and a longitudinal adjusting structure 92 arranged at the top of the pressing curtain structure 91 and fixed to the outside of the air equalizing forming tank 71. Specifically, the pressing curtain structure 91 includes a large pressing roller 911 at the discharge end of the air equalizing forming tank 71, a small pressing roller 913 connected to the large pressing roller 911 through a leather curtain 912, a strip plate 914 for loading the large pressing roller 911 and the small pressing roller 913, and a connecting plate 915 fixed to the strip plate 914. The longitudinal adjusting structure 92 includes a chain 921 connected to the connecting plate 915, and a sprocket 922 engaged with the chain 921. The sprocket 922 is connected to a power member. The pressing curtain structure 91 can press the web through the leather curtain 912 to compress the thickness of the web to meet the requirements. Since the thickness of the glass fiber web required by different inner cores is different, the upper end of the pressing curtain structure 91 is also provided with the longitudinal adjusting structure 92, which can drive the pressing curtain structure 91 to move upward or downward, so as to adjust the acting height of the leather curtain 912. Even in the face of different thickness requirements of the web, the leather curtain 912 can also play a certain role.

[0076] Example Two

[0077] The difference between the embodiment and the embodiment one is that the feedback assembly 1 is further arranged at the end of the air equalizing net forming box 71 away from the air equalizing output curtain 73, the feedback assembly 1 comprises a portal frame 101 locked at the fixed ends of the two sides of the air equalizing output curtain 73, four infrared sensors 102 uniformly hung on the portal frame 101, and limiting piles 103 arranged at the front and back of the bottom of the portal frame 101, the four infrared sensors 102 correspond to the positions of the four air suction devices 74, and the infrared sensors 102 can be shot on the web, so as to determine the uneven position of the web in the position corresponding to the air suction device 74 according to the feedback time, if the web is thicker, the power of the air suction device 74 in the corresponding position is appropriately increased, otherwise, the power of the air suction device 74 in the corresponding position is reduced.

[0078] However, in fact, only the air suction device 74 is used to determine the uneven position, and the coverage is wide, therefore, the embodiment further proposes that the feedback assembly 1 further comprises a spring contact structure 104 movably arranged at the bottom of the portal frame 101, the spring contact structure 104 is uniformly densely arranged on the top of the web, the spring contact structure 104 comprises a swing column 1041 hingedly arranged at the bottom of the portal frame 101, a sliding sheet 1042 hingedly arranged at the bottom of the swing column 1041, and a piezoelectric sheet 1043 arranged 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 will be in contact with the sliding sheet 1042, so as to drive the swing column 1041 to slightly press the piezoelectric sheet 1043, thereby indicating that the thickness of the web is normal at this time, and in the case that the web is thinner, the sliding sheet 1042 is not externally stressed, and remains stationary under the action of gravity, so that the piezoelectric sheet 1043 is electrified, indicating that the thickness of the web is lower at this time, so the angle of the air deflector 761 needs to be inclined to make the position receive less wind, and if the web is thicker, the contact area of the sliding sheet 1042 with the web is enlarged, and the limiting pile 103 corresponding to the position is stressed more heavily, so that the threshold of the piezoelectric sheet 1043 is directly triggered, so that the air deflector 761 is inclined, so that the wind force received at the position is maximized, thereby suppressing the thickness of the web, and through repeated tests, the best inclination angle of the air deflector 761 and the best output power of the air suction device 74 can be obtained.

[0079] It should be emphasized that the swing column 1041 is made of light material, so it will swing under the contact of lighter web, therefore, in order to avoid the swing column 1041 from being disturbed by external wind or other external factors, the limiting pile 103 is arranged as a windbreak outside the swing column 1041, thereby reducing the probability of misjudgment.

[0080] Embodiment three

[0081] In another embodiment of the present application, a vacuum insulation board core material waste recycling production method is also provided, which applies the above-mentioned vacuum insulation board core material waste recycling production system and comprises the following steps:

[0082] S1: feed the glass fiber cotton through the raw material pretreatment device 72 into the air distribution box 71, and after being scattered by the roller, the glass fiber cotton is uniformly formed on the web output curtain 73 by the negative pressure of the suction device 74, and then is conveyed to the outside of the air distribution box 71 through the web output curtain 73;

[0083] S2: after the edge material of the web output curtain 73 and the fiber cotton leaking outside the air distribution box 71 are sucked into the excess material collector 82, they are put into the feeding device 10 for recycling;

[0084] S3: the air flow extracted by the suction device 74 is introduced into the dust removal device 83 through the pipeline for filtration and purification, and then is discharged into the atmosphere;

[0085] S4: the unqualified defective products formed on the web output curtain 73 are directly put into the feeding device 10 for recycling;

[0086] S5: the large bin 40 and the top pressure relief outlet of the vibrating cotton box 50 are connected to the dust removal device 83 through the air pipe for filtration and purification, and then are discharged into the atmosphere.

[0087] Further, the S1 further comprises: supplementing air at the top of the air distribution box 71, and the supplemented air is guided by the air deflector 761 and then acts on the glass fiber cotton.

[0088] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vacuum insulation panel core material waste recycling production system, comprising a feeding device (10), an unpacking machine (20), an opener (30), a large bin (40), a vibrating cotton box (50), a belt scale (60), and an air-laid mechanism (70) for vacuum insulation panel forming processing, the air-laid mechanism (70) comprising a uniform air-laid box (71) with open upper and lower ends; a feeding device (10) arranged on one side of the feeding end of the uniform air-laid box (71), and a raw material pretreatment device (72) for uniformly guiding the pretreated raw material into the uniform air-laid box (71); a web output curtain (73) is drivingly installed at the bottom of the uniform air-laid box (71), and an air suction device (74) for uniformly adsorbing the raw material on the bottom of the web output curtain (73) is arranged at the bottom of the web output curtain (73), characterized in that: The waste recycling production system further comprises a material circulation recycling mechanism, which comprises: A dust removal device (83), a gas collection hood covering the periphery of the air suction device (74) is connected to the bottom of the uniform air laying box (71), the gas collection hood is connected to one side of the air inlet end of the air suction device (74) through a first air duct, the gas discharged by the air suction device (74) is collected and transmitted through the gas collection hood, and then filtered by the dust removal device (83) and discharged to the outside, a pressure relief outlet is formed in the top of the large bin (40) and the vibrating cotton box (50), and the pressure relief outlet is connected to the dust removal device (83) through a pipeline for filtering and then discharging to the outside; A surplus material recycling device (81), the web output curtain (73) comprises a forming section arranged in the uniform air laying box (71) and a material discharge conveying section arranged outside the uniform air laying box (71), the surplus material recycling device (81) comprises an air suction hood arranged on the upper side of the material discharge conveying section, the air suction hood is connected to one side of the air inlet end of the air suction device (74) through a second air duct, and the second air duct is fixed with a corresponding surplus material collector (82) at a position corresponding to the material inlet end of the material inlet device (10), the material outlet end of the surplus material collector (82) is connected to the material inlet end of the material inlet device (10), the edge material of the web output curtain (73) and the leakage material of the uniform air laying box (71) are collected by the air suction hood, and then collected by the surplus material collector (82) and discharged to the material inlet end of the material inlet device (10); Further comprising a pressing curtain assembly (90), one end of the pressing curtain assembly (90) away from the uniform air laying box (71) is further provided with a feedback assembly (1), the feedback assembly (1) comprises a portal frame (101) locked at the fixed ends on both sides of the web output curtain (73), four infrared sensors (102) uniformly hung on the portal frame (101), limiting piles (103) located at the bottom of the portal frame (101) on the front and rear sides, the four infrared sensors (102) correspond to the positions corresponding to the four air suction devices (74), the feedback assembly (1) further comprises a spring type contact structure (104) movably mounted at the bottom of the portal frame (101), the spring type contact structure (104) is uniformly densely arranged on the top of the web, and the spring type contact structure (104) comprises a swing column (1041) hingedly arranged at the bottom of the portal frame (101), a sliding sheet (1042) hingedly arranged at the bottom of the swing column (1041), and a piezoelectric sheet (1043) arranged between the swing column (1041) and the limiting pile (103), the piezoelectric sheet (1043) is electrically connected with the driving structure of the corresponding straight line and the plurality of air deflectors (761) movably arranged on the inner wall of the uniform air laying box (71).

2. The vacuum insulation panel core material waste recycling production system according to claim 1, characterized by, The air-laying mechanism (70) further comprises an auxiliary structure arranged at the top opening of the uniform air-laying box (71), which comprises a wind supplement structure (762) fixed to the top inner side of the uniform air-laying box (71), and the air deflector (761) is arranged below the wind supplement structure (762), and the gap formed between the air deflector (761) and the air deflector (761) corresponds to the gap between the roller assemblies.

3. The vacuum insulation panel core material waste recycling production system according to claim 1, characterized in that, One side opening of the uniform air-laying box (71) is the feeding end, and the raw material pretreatment device (72) is arranged in the feeding end. The raw material pretreatment device (72) comprises a group of feeding rollers (721) arranged at the end of the belt scale (60), a carding roller (722) arranged at intervals on the lateral side of the feeding roller (721), and a leak bottom guide cotton (723) arranged below the carding roller (722) and fixed to the uniform air-laying box (71). The leak bottom guide cotton (723) is an arc structure, and the thickness of the leak bottom guide cotton (723) gradually increases at one end along the conveying direction.

4. The vacuum insulation panel core material waste recycling production system according to claim 2, characterized by, The roller assembly comprises at least two horizontally arranged horizontal rollers (752) arranged at intervals, the horizontal rollers (752) are mounted on a transverse adjusting frame, and the roller assembly further comprises at least two vertical rollers (753) arranged at intervals below the two horizontal rollers (752), the vertical rollers (753) are mounted on a longitudinal adjusting frame, and a plurality of push pieces (751) are inserted into the horizontal rollers (752) and the vertical rollers (753).

5. The vacuum insulation panel core material waste recycling production system according to claim 4, characterized by, Adjacent horizontal rollers (752) and horizontal rollers (752) are arranged at intervals, or adjacent horizontal rollers (752) and vertical rollers (753) are arranged at intervals, adjacent push pieces (751) are arranged at intervals and opposite to each other, and the interval distance between the push pieces (751) is 1mm-180mm.

6. The vacuum insulation panel core material waste recycling production system according to claim 4, characterized by, Adjacent horizontal rollers (752) and horizontal rollers (752) are arranged at intervals, or adjacent horizontal rollers (752) and vertical rollers (753) are arranged at intervals, adjacent push pieces (751) are arranged at intervals and opposite to each other, and the interval distance between the push pieces (751) is 1mm-180mm.

7. The vacuum insulation panel core material waste recycling production system according to claim 1, characterized in that, A settling box (77) is arranged between the top and the bottom roller of the forming section of the air-laying output curtain (73), and the settling box (77) is used to communicate the inner and outer spaces of the uniform air-laying box (71).

8. The vacuum insulation panel core material waste recycling production system according to claim 1, characterized in that, The pressure curtain assembly (90) comprises a pressure curtain structure (91) at the discharge end of the uniform air web forming box (71), and a longitudinal adjustment structure (92) arranged at the top of the pressure curtain structure (91) and fixed outside the uniform air web forming box (71), the pressure curtain structure (91) comprises a large pressure roller (911) at the discharge end of the uniform air web forming box (71), a small pressure roller (913) connected with the large pressure roller (911) through a leather curtain (912), a strip-shaped plate (914) for loading the large pressure roller (911) and the small pressure roller (913), a connecting plate (915) fixed on the strip-shaped plate (914), the longitudinal adjustment structure (92) comprises a chain (921) connected with the connecting plate (915), a sprocket (922) engaged with the chain (921), and the sprocket (922) is connected with a power member.

9. A method for recycling waste of a core material of a vacuum insulation panel, using the system for recycling waste of a core material of a vacuum insulation panel according to any one of claims 1 to 8, characterized in that, The method comprises the following steps: S1: The glass fiber cotton is fed into the uniform air web forming box (71) through the raw material pretreatment device (72), and is uniformly web-formed on the web output curtain (73) by the negative pressure suction of the suction device (74) after being scattered by the roller in the uniform air web forming box (71), and is conveyed to the outside of the uniform air web forming box (71) through the web output curtain (73); S2: The edge material of the web output curtain (73) and the fiber cotton leaked outside the uniform air web forming box (71) are sucked into the excess material collector (82) and then recycled into the feeding device (10); S3: The air flow sucked by the suction device (74) is introduced into the dust removal device (83) through the pipeline, filtered and purified, and then discharged into the atmosphere; S4: The unqualified defective products web-formed in the web output curtain (73) are directly put into the feeding device (10) for recycling; S5: The large bin (40) and the top pressure relief outlet of the vibrating cotton box (50) are connected to the dust removal device (83) through the air pipe, filtered and purified, and then discharged into the atmosphere.

10. The vacuum insulation panel core material waste recycling production method according to claim 9, characterized by, The S1 further comprises: Air is supplied at the top of the uniform air web forming box (71), and the supplied air is guided by the air deflector (761) and acts on the glass fiber cotton.

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