WO2021114955A1

WO2021114955A1 - One-time reaction extrusion molding production line for acrylic plates

Info

Publication number: WO2021114955A1
Application number: PCT/CN2020/126172
Authority: WO
Inventors: 汤月生; 肖建霞; 汤佳晨; 宋飞
Original assignee: 泰兴汤臣压克力有限公司
Priority date: 2019-12-13
Filing date: 2020-11-03
Publication date: 2021-06-17
Also published as: CN110774554A

Abstract

The present invention relates to a one-time reaction extrusion molding production line for acrylic plates, comprising a reaction kettle having an MMA feed pipe, an initiator adding device and a plurality of tubular reactors being connected in series to a lower part of the reaction kettle by means of a discharge valve, and then the lower part of the reaction kettle being connected to an inlet of a screw devolatilization device, an exhaust port of the screw devolatilization device being connected to an upper part of the reaction kettle by means of a condenser, an extrusion port of the screw devolatilization device being connected to a cylindrical inlet at one end of a material uniforming and feeding barrel, the middle part of the material uniforming and feeding barrel having a structure that smoothly transitions from the cylindrical inlet at one end to a horizontal rectangular elongated outlet at the other end, and the horizontal rectangular elongated outlet at the other end of the material uniforming and feeding barrel being connected to a plate-molding device. The production line can take account of both the one-time full polymerization reaction of raw materials, and the stable extrusion molding production of plates having various lengths, has no volatile gas pollution, and has good molding quality, high production efficiency and low costs.

Description

一种压克力板材一次反应挤出成型生产线One-time reaction extrusion molding production line for acrylic sheet

技术领域Technical field

本发明涉及一种压克力产线，具体说是一种压克力板材一次反应挤出成型生产线。The invention relates to an acrylic production line, in particular to a one-time reaction extrusion molding production line of acrylic sheet.

背景技术Background technique

现有压克力板材生产是首先采用原料聚合制备粒子，将所有原料在反应釜中混合，容易产生爆聚现象，聚合率低，聚合质量无法得到保证，且其中聚合后引发剂挥发性气体无法得到有效收集、处理，增加了聚合生产成本；粒子制备后再次熔融通过二段式螺杆挤出浇注，二次熔融浪费能耗，生产周期、成本增加，且挤出料液直接落在浇注模具的开口内，料液裸露存在进灰、进水气等污染隐患，影响板材成型质量，局部问题的板材直接导致定长生产板材的报废，生产成本较高。另外，传统压克力板材只能定长定模制作，多规格板材需要配备多种模具，无形中进一步提高了生产成本。In the existing acrylic sheet production, particles are first prepared by polymerization of raw materials. All raw materials are mixed in a reactor, which is prone to explosion phenomenon, low polymerization rate, polymerization quality cannot be guaranteed, and the initiator volatile gas cannot be guaranteed after polymerization. It is effectively collected and processed, which increases the cost of polymerization production; after the particles are prepared, they are melted again and poured through a two-stage screw extrusion. The second melting wastes energy consumption, increases the production cycle and costs, and the extruded liquid directly falls on the casting mold. In the opening, the material liquid is exposed to the hidden dangers of ash, moisture and other pollution, which affects the forming quality of the board. The local problem of the board directly leads to the scrap of the fixed-length production board, and the production cost is high. In addition, traditional acrylic sheets can only be made with fixed length and fixed molds, and multi-specification sheets need to be equipped with multiple molds, which invisibly further increases the production cost.

发明内容Summary of the invention

本发明提供了一种结构简单，使用便捷，能兼顾原料一次性充分聚合反应、稳定挤出成型生产各种长度规格板材，无挥发性气体污染、成型质量好，生产效率高、成本低的压克力板材一次反应挤出成型生产线。The invention provides a simple structure, convenient use, can take into account the full polymerization reaction of raw materials at one time, stable extrusion molding to produce plates of various length specifications, no volatile gas pollution, good molding quality, high production efficiency, and low cost. One-step reaction extrusion molding production line for Keli board.

本发明采用的技术方案是：一种压克力板材一次反应挤出成型生产线，包括带有MMA进料管的反应釜，其特征在于：所述反应釜下部经出料阀串接引发剂添加器和多个管式反应器后接螺杆脱挥装置进口，螺杆脱挥装置的排气口经冷凝器接至反应釜上部，螺杆脱挥装置的挤出口接匀料送料筒一端的圆筒状进口，匀料送料筒中部由一端圆筒状进口圆滑过渡延伸至另一端水平方形长条状出口的结构，匀料送料筒另一端的水平方形长条状出口接板材成型装置。The technical scheme adopted by the present invention is: an acrylic sheet one-time reaction extrusion molding production line, including a reaction kettle with an MMA feed pipe, characterized in that: the lower part of the reaction kettle is connected in series with an initiator via a discharge valve The screw devolatilizer and the multiple tubular reactors are connected to the inlet of the screw devolatilizer. The exhaust port of the screw devolatilizer is connected to the upper part of the reactor via the condenser. The extrusion port of the screw devolatilizer is connected to the cylindrical shape at one end of the sizing feeding barrel. The structure in which the middle part of the screed feeding barrel is smoothly transitioned from a cylindrical inlet at one end to a horizontal rectangular strip outlet at the other end, and the horizontal square elongated outlet at the other end of the screed feeding barrel is connected to a plate forming device.

一种压克力板材一次反应挤出成型生产线，包括带有MMA进料管的反应釜，其特征在于：还包括离心混料反应挤出装置，离心混料反应挤出装置包括挤出架、前驱动电机、外反应器、内反应器、后驱动电机、外匀料器、内匀料器，外反应器和外匀料器同轴前、后设置并可旋转支撑在挤出架内，外反应器外设齿圈经齿轮受前驱动电机驱动，外匀料器外设齿圈经齿轮受后驱动电机驱动，外反应器的内圆周壁上圆周均布多道沿其轴向设置的圆弧反应槽，内反应器同轴穿接在外反应器内并支撑在挤出架内，外反应器的内壁与内反应器外圆周壁留有混料间隙，外反应器的器体内圆周错开圆弧反应槽位置均布多根轴向的电加热或蒸汽加热管道，内反应器内中心轴向设置电加热或蒸汽加热管道，内反应器的器体内圆周均布多道引发剂通道，多道引发剂通道前端经多通分料平衡阀和引发剂供料泵接引发剂供料槽或罐，每道引发剂通道沿轴向设有多道穿出内反应器外壁的引发剂送入管，引发剂送入管穿出长度等于混料间隙径向厚度，引发剂送入管沿引发剂通道轴向管径渐变减小，外匀料器前端经油封轴承密封贴合外反应器后端，内匀料器连接内反应器后端且同轴穿接在外匀料器内，外匀料器内壁设有多道轴向对应圆弧反应槽的离心槽，每道离心槽分为相连的前段离心槽和后端离心槽，前段离心槽的槽向为在前后方向上所处圆周直径扩大、在圆周方向上扭转90°，后段离心槽的槽向为在前后方向上所处圆周直径缩小、在圆周方向上扭转90°，上述扭转同向，内匀料器外圆周设置相连且分别对应前、后段离心槽的前扩径绞龙和后缩径绞龙，前扩径绞龙后部的直径扩大量小于前段离心槽的直径扩大量，后缩径绞龙前部的直径等于前扩径绞龙后部的直径，后缩径绞龙后部的直径缩小量小于后段离心槽的直径缩小量，后段离心槽后部与后缩径绞龙后部间隙出口接匀料送料筒一端的圆筒状进口，匀料送料筒中部由一端圆筒状进口圆滑过渡延伸至另一端水平方形长条状出口的结构，匀料送料筒另一端的水平方形长条状出口接板材成型装置。An acrylic sheet one-time reaction extrusion molding production line, comprising a reaction kettle with an MMA feed tube, characterized in that it also includes a centrifugal mixing reaction extrusion device, the centrifugal mixing reaction extrusion device including an extrusion rack, Front drive motor, outer reactor, inner reactor, rear drive motor, outer homogenizer, inner homogenizer, outer reactor and outer homogenizer are coaxially arranged front and rear, and can be rotatably supported in the extrusion frame, The outer gear ring of the outer reactor is driven by the front drive motor through the gear, and the outer gear ring of the outer screeder is driven by the rear drive motor through the gear. The inner circumferential wall of the outer reactor is evenly distributed on the circumference of the outer reactor. Circular arc reaction tank, the inner reactor is coaxially connected in the outer reactor and supported in the extrusion frame, the inner wall of the outer reactor and the outer circumferential wall of the inner reactor leave a mixing gap, and the inner circumference of the outer reactor is staggered A number of axial electric heating or steam heating pipes are evenly distributed at the position of the arc reaction tank. Electric heating or steam heating pipes are arranged axially in the center of the inner reactor. Multiple initiator channels are evenly distributed on the circumference of the inner reactor. The front end of the initiator channel is connected to the initiator supply tank or tank through the multi-port balance valve and the initiator supply pump. Each initiator channel is provided with multiple initiators passing through the outer wall of the inner reactor along the axial direction. The length of the initiator feeding tube is equal to the radial thickness of the mixing gap. The diameter of the initiator feeding tube decreases gradually along the axis of the initiator channel. The front end of the outer homogenizer is sealed and fitted to the outer reactor through an oil seal bearing. At the end, the inner homogenizer is connected to the back end of the inner reactor and coaxially penetrates into the outer homogenizer. The inner wall of the outer homogenizer is provided with a plurality of centrifugal grooves corresponding to the arc reaction groove in the axial direction, and each centrifugal groove is divided into connected The front centrifugal groove and the rear centrifugal groove of the front centrifugal groove, the groove direction of the front centrifugal groove is the circumference of the front and rear direction is enlarged, and the circumference is twisted 90°, and the groove direction of the rear centrifugal groove is the circumference of the front and rear direction. The diameter is reduced, and the twisting is 90° in the circumferential direction. The above-mentioned twisting is in the same direction. The outer circumference of the inner homogenizer is connected to the front and rear centrifugal grooves. The front expanding screw and the rear reducing screw are respectively corresponding to the front and rear centrifugal grooves. The diameter enlargement of the rear part of the dragon is smaller than the diameter enlargement of the front centrifugal tank. The diameter of the front part of the rear reducing auger is equal to the diameter of the rear part of the front expanding auger. The diameter reduction of the rear part of the rear reducing auger is smaller than that of the rear part. The diameter of the centrifugal tank is reduced by the amount that the gap between the rear of the centrifugal tank and the rear of the rear reducing screw auger is connected to the cylindrical inlet at one end of the screed feeding barrel. The other end has a horizontal rectangular strip-shaped outlet structure, and the horizontal square-shaped strip outlet at the other end of the screed feeding barrel is connected to a plate forming device.

进一步地，所述板材成型装置包括上下间隙相对的两环状传送带和分别在上述上下间隙两侧封装成一间隙空腔两侧边的连续密封带，匀料送料筒另一端的水平方形长条状出口接间隙空腔一侧进口，间隙空腔的上下设置加热区，上、下环状传送带的上、下均设有多个水平贴合靠内相对形成间隙空腔的环状传动带的辊体。Further, the plate forming device includes two ring-shaped conveyor belts with opposite upper and lower gaps and continuous sealing belts encapsulated on both sides of a gap cavity on both sides of the upper and lower gaps, and a horizontal rectangular strip at the other end of the screeding feeding barrel. The outlet is connected to the inlet on one side of the gap cavity. Heating zones are arranged above and below the gap cavity. Both the upper and lower ring conveyor belts are provided with a plurality of roller bodies that are horizontally attached to the ring drive belts that form the gap cavity. .

进一步地，所述间隙空腔内设有封料头挡板，封料头挡板上下无间隙贴合上下两环状传送带夹装在两环状传送带间、左右无间隙贴合两侧边的密封带夹装在两密封带间。Further, the gap cavity is provided with a sealing head baffle. The sealing head baffle is attached to the upper and lower ring conveyor belts without gaps. The upper and lower ring conveyor belts are clamped between the two ring conveyor belts. The sealing tape clamp is installed between the two sealing tapes.

进一步地，所述板材成型装置包括一组以上、上下间隙的两成型辊，一组以上的成型辊沿板材成型方向布置。Further, the sheet forming device includes more than one set of two forming rollers with upper and lower gaps, and more than one set of forming rollers are arranged along the sheet forming direction.

进一步地，所述出料阀后接供料流量计，引发剂添加器上设置添加流量计，所述冷凝器经回液流量计接反应釜，所述MMA进料管上设置进料流量计，上述流量计接产线控制器。Further, a feed flow meter is connected after the discharge valve, an addition flow meter is provided on the initiator feeder, the condenser is connected to the reaction kettle via a liquid return flow meter, and a feed flow meter is provided on the MMA feed pipe , The above flow meter is connected to the production line controller.

进一步地，所述管式反应器为立式结构。Further, the tubular reactor has a vertical structure.

进一步地，所述螺杆脱挥装置的排气口经抽真空装置接冷凝器。Further, the exhaust port of the screw devolatilizer is connected to the condenser via a vacuuming device.

进一步地，对应前段离心槽和后端离心槽相接处的外匀料器上经冷凝器接至反应釜上部。Further, the outer homogenizer corresponding to the junction of the front centrifugal tank and the rear centrifugal tank is connected to the upper part of the reactor via a condenser.

生产时，将MMA原料经MMA进料管送至反应釜内均匀混合，通过下部出料阀将混合原料送至管式反应，并在同时由引发剂添加器同步输送混合原料按量添加引发剂，有效避免在反应釜中瞬间大量引发剂加入导致的爆聚，且混合原料的引发剂添加按量添加，结合管式反应器，有利于提高聚合速度和效率，适合工业化生产需要；聚合后的料浆送至螺杆脱挥装置中，在螺旋推送同时经排气口由抽真空装置将其内挥发性气体抽送至冷凝器，计流量返回反应釜，少量的引发剂挥发气体冷凝后进入反应釜，有利于原料的初步预混合预聚合，并整体结合MMA进料管的进料、引发剂添加器的即时添加，控制调整引发剂添加器添加引发剂用量，进一步确保更稳定、高效的聚合；聚合的料液脱挥后经匀料送料筒一端圆筒状进口进入，在匀料送料筒内中部的空间内均匀填充并经另一端水平方形长条状出口沿上、下环状传送带间间隙空腔的横向长方形截面均匀送料，配合辊体贴合间隙空腔环状传动带，上、下间隙空腔内进料在其截面上均匀，无局部料液多少差异问题，有利于确保板材成型无缺陷，成型质量好，或直接采用上下间隙的两成型辊将送料压制成板；随着封料头挡板在上、下环状传送带带动下后移，满足不同长度规格板材浇注成型，无需配备多种模具，有利于节约生产成本。During production, the MMA raw materials are sent to the reactor through the MMA feed pipe to be uniformly mixed, and the mixed raw materials are sent to the tubular reaction through the lower discharge valve, and at the same time, the mixed raw materials are synchronously transported by the initiator adder to add the initiator according to the amount , Effectively avoid the explosion caused by the addition of a large amount of initiator in the reactor, and the initiator of the mixed raw materials is added according to the amount, combined with the tubular reactor, which is beneficial to improve the polymerization speed and efficiency, and is suitable for the needs of industrial production; The slurry is sent to the screw devolatilizer, and the volatile gas in it is pumped to the condenser by the vacuum device through the exhaust port at the same time as the screw is pushed, and the flow rate is returned to the reactor. A small amount of the initiator volatile gas is condensed and enters the reactor. , It is conducive to the preliminary pre-mixing and pre-polymerization of the raw materials, and the overall combination of the feed of the MMA feed pipe and the instant addition of the initiator adder, controls and adjusts the amount of initiator added by the initiator adder to further ensure more stable and efficient polymerization; After the polymerized liquid is devolatilized, it enters through the cylindrical inlet at one end of the screed feeding barrel, and is evenly filled in the space in the middle of the screed feeding barrel, and passes through the horizontal rectangular strip outlet at the other end along the gap between the upper and lower ring conveyor belts. The transverse rectangular section of the cavity is uniformly fed, and the roller body is fitted to the gap cavity ring-shaped transmission belt. The feed in the upper and lower gap cavity is uniform on its section, and there is no local difference in the amount of material and liquid, which is beneficial to ensure that the sheet is formed without defects , The forming quality is good, or the two forming rollers with the upper and lower gaps are directly used to press the feeding into the plate; as the sealing head baffle moves down and backward driven by the upper and lower endless conveyor belts, it can meet the requirements of casting and forming of different lengths and specifications, and there is no need to equip more This kind of mold is conducive to saving production costs.

进一步地，采用离心混料反应挤出装置，由反应釜和引发剂罐分别泵给MMA原料和引发剂，MMA原料进入外反应器和内反应器之间的圆弧反应槽和混料间隙内，大部分MMA原料在圆弧反应槽内朝后进给，并随外反应器在前驱动电机经齿轮、齿圈驱动下旋转对应引发剂通道由引发剂送入管朝向圆弧反应槽供给引发剂，在同一径向的引发剂送入管管径相同，由于圆弧反应槽带动MMA原料在旋转同时，引发剂送入管送入引发剂，加大单位体积的MMA原料与引发剂的混合反应效率，且相邻圆弧反应槽经混料间隙连通，能确保圆周范围内的所有圆弧反应槽连通避免多个圆弧反应槽内反应程度不同，提高反应完成度和一致度，有利于提高后续产品质量；在MMA原料与引发剂反应同时，控制轴向后方的引发剂送入管管径缩小，整体控制引发剂的送入量，避免一次性加入引发剂造成的不良后果；在反应以及原料输送过程中，在外反应器、内反应器内的轴向设置的电加热或蒸汽加热管道，能对原料以及反应进行加热，提高反应速率，引发剂预加热输送送入，有效避免温差较多的原料和引发剂直接接触，造成的温度落差引起的反应减慢、引发效果降低等问题；混合反应后的料液送入外匀料器和内匀料器前端的间隙口内，通过前段离心槽和前扩径绞龙约束，前段离心槽内经前扩径绞龙在两者间空腔内扭转90°离心扩容输送，进一步混合前序中多道圆弧反应槽内的反应料液和促进引发效果，在前、后段离心槽相接处输送空腔最大，由后缩径绞龙扭转90°离心缩容输送，有效将料液稳定、高效的挤压输出至匀料送料筒，并有后续板材成型装置完成板材的挤出成型。Further, a centrifugal mixing reaction extruding device is used, and the MMA raw material and the initiator are pumped from the reactor and the initiator tank respectively, and the MMA raw material enters the arc reaction tank and the mixing gap between the outer reactor and the inner reactor. Most of the MMA raw materials are fed backwards in the arc reaction tank, and are driven by the gear and ring gear to rotate with the front drive motor of the outer reactor. Corresponding to the initiator channel, the initiator is fed into the tube toward the arc reaction tank to supply initiator. , The diameter of the initiator feeding tube in the same radial direction is the same. Because the arc reaction tank drives the MMA raw material to rotate, the initiator feeding tube sends the initiator to increase the mixing reaction of the unit volume of MMA raw material and the initiator. Efficiency, and adjacent arc reaction tanks are connected through the mixing gap, which can ensure that all arc reaction tanks in the circumference are connected to avoid different reaction levels in multiple arc reaction tanks, improve the completion and consistency of the reaction, and help improve Subsequent product quality; while the MMA raw material reacts with the initiator, the diameter of the initiator feeding pipe at the rear of the axis is controlled to reduce, and the amount of initiator fed is controlled as a whole to avoid the adverse consequences caused by the one-time addition of the initiator; in the reaction and In the process of raw material transportation, the axially set electric heating or steam heating pipelines in the outer reactor and the inner reactor can heat the raw materials and the reaction, increase the reaction rate, and the initiator is pre-heated and fed, effectively avoiding large temperature differences. The raw material and the initiator are in direct contact, and the temperature drop caused by the reaction slows down and the initiation effect is reduced; the mixed reaction liquid is sent to the gap opening at the front end of the outer and inner homogenizers, and passes through the front centrifugal tank Constrained with the front expansion screw, the front section of the centrifugal tank is twisted 90° in the cavity between the two for centrifugal expansion and conveying to further mix and promote the reaction materials in the multi-channel arc reaction tank in the preamble. The effect is triggered. The conveying cavity is the largest at the junction of the front and rear centrifugal tanks. The rear reducing screw twists the 90° centrifugal shrinkage conveying, effectively squeezing and outputting the material liquid to the screeding feeding barrel in a stable and efficient manner. There is a follow-up sheet forming device to complete the sheet extrusion molding.

本发明将传统压克力生产的聚合、挤出两产线有效结合为一整体，同时对聚合效率采用管式反应器进料配对添加引发剂、引发剂挥发气体脱挥冷凝回收再利用、采用匀料送料筒充分匀料送料浇注、板材间隙空腔受辊体控制板面成型无缺陷、无浇注长度限制进行综合控制，具有结构简单，使用便捷，能兼顾原料一次性充分聚合反应、稳定挤出成型生产各种长度规格板材，无挥发性气体污染、成型质量好，生产效率高、成本低的优点。The invention effectively combines the polymerization and extrusion production lines of traditional acrylic production into a whole. At the same time, the polymerization efficiency adopts a tubular reactor feed pair to add initiator and initiator volatile gas for devolatilization, condensation, recovery and reuse. The screeding feeding barrel is fully uniformed for feeding and pouring, and the plate gap cavity is controlled by the roller. The plate surface is formed without defects and the pouring length is limited. It is comprehensively controlled. It has a simple structure and convenient use. It can take into account the full polymerization of raw materials at one time and stable extrusion. It has the advantages of forming various lengths and specifications, no volatile gas pollution, good forming quality, high production efficiency and low cost.

附图说明Description of the drawings

图1为本发明实施例一的结构示意图；FIG. 1 is a schematic structural diagram of Embodiment 1 of the present invention;

图2为本发明实施例二的结构示意图；Figure 2 is a schematic structural diagram of Embodiment 2 of the present invention;

图3为本发明实施例三的结构示意图；Figure 3 is a schematic structural diagram of Embodiment 3 of the present invention;

图4为图3中离心混料反应挤出装置结构图；Figure 4 is a structural diagram of the centrifugal mixing reaction extrusion device in Figure 3;

图5为图4左视图。Fig. 5 is a left side view of Fig. 4.

图1中：反应釜1、MMA进料管2、出料阀3、供料流量计4、引发剂添加器5、管式反应器6、螺杆脱挥装置7、冷凝器8、回液流量计9、匀料送料筒10、圆筒状进口11、水平方形长条状出口12、上环状传送带13、下环状传送带14、封料头挡板15、辊体16、加热区17、间隙空腔18。In Figure 1: reactor 1, MMA feed pipe 2, discharge valve 3, feed flow meter 4, initiator adder 5, tubular reactor 6, screw devolatilizer 7, condenser 8, return liquid flow Count 9, screed feeding barrel 10, cylindrical inlet 11, horizontal rectangular strip outlet 12, upper endless conveyor belt 13, lower endless conveyor belt 14, sealing head baffle 15, roller body 16, heating zone 17, Interstitial cavity 18.

图2中：反应釜1、MMA进料管2、出料阀3、供料流量计4、引发剂添加器5、管式反应器6、螺杆脱挥装置7、冷凝器8、回液流量计9、匀料送料筒10、圆筒状进口11、水平方形长条状出口12、上成型辊19、下成型辊20。In Figure 2: reactor 1, MMA feed pipe 2, discharge valve 3, feed flow meter 4, initiator adder 5, tubular reactor 6, screw devolatilizer 7, condenser 8, return liquid flow Count 9. The screed feeding cylinder 10, the cylindrical inlet 11, the horizontal rectangular elongated outlet 12, the upper forming roller 19, and the lower forming roller 20.

图3、4、5中：反应釜1、MMA进料管2、出料阀3、供料流量计4、冷凝器8、回液流量计9、匀料送料筒10、圆筒状进口11、水平方形长条状出口12、上成型辊19、下成型辊20、挤出架21、前驱动电机22、外反应器23、内反应器24、后驱动电机25、外匀料器26、内匀料器27、圆弧反应槽28、混料间隙29、外加热管道30、内加热管道31、引发剂通道32、多通分料平衡阀33、引发剂供料泵34、引发剂罐35、引发剂送入管36、油封轴承37、前段离心槽38、后段离心槽39、前扩径绞龙40、后缩径绞龙41、离心混料反应挤出装置100。In Figures 3, 4, and 5: reactor 1, MMA feed pipe 2, discharge valve 3, feed flow meter 4, condenser 8, liquid return flow meter 9, uniform feed barrel 10, cylindrical inlet 11 , Horizontal rectangular strip outlet 12, upper forming roll 19, lower forming roll 20, extrusion frame 21, front drive motor 22, outer reactor 23, inner reactor 24, rear drive motor 25, outer homogenizer 26, Inner homogenizer 27, arc reaction tank 28, mixing gap 29, outer heating pipe 30, inner heating pipe 31, initiator channel 32, multi-way distribution balance valve 33, initiator feed pump 34, initiator tank 35. The initiator is fed into the pipe 36, the oil seal bearing 37, the front centrifugal tank 38, the rear centrifugal tank 39, the front expanding auger 40, the rear reducing auger 41, and the centrifugal mixing reaction extruding device 100.

具体实施方式Detailed ways

以下结合附图和实施例作进一步说明。Further description will be given below with reference to the drawings and embodiments.

实施例一Example one

图1所示：一种压克力板材一次反应挤出成型生产线包括反应釜1、MMA进料管2、出料阀3、供料流量计4、引发剂添加器5、管式反应器6、螺杆脱挥装置7、冷凝器8、回液流量计9、匀料送料筒10、上环状传送带13、下环状传送带14、封料头挡板15、辊体16、加热区17、间隙空腔18。反应釜1上部接带有流量计的MMA进料管2，反应釜1下部经出料阀3、供料流量计4串接引发剂添加器5和多个管式反应器6后接螺杆脱挥装置7进口，螺杆脱挥装置7的排气口经冷凝器8、回液流量计9接至反应釜1上部，螺杆脱挥装置7的挤出口接匀料送料筒10一端的圆筒状进口11，匀料送料筒10中部由一端圆筒状进口11圆滑过渡延伸至另一端水平方形长条状出口12的结构，匀料送料筒另一端的水平方形长条状出口接至上下间隙相对的上、下环状传送带13、14由两侧密封带封装成的间隙空腔18进口，间隙空腔的上下设置加热区17，上、下环状传送带的上、下均设有多个水平贴合靠内相对形成间隙空腔的环状传动带的辊体16，间隙空,18内设有封料头挡板15，封料头挡板上下无间隙贴合上下两环状传送带夹装在两环状传送带间、左右无间隙贴合两侧边的密封带夹装在两密封带间。As shown in Figure 1: A one-time reaction extrusion molding production line for acrylic sheet includes reactor 1, MMA feed pipe 2, discharge valve 3, feed flow meter 4, initiator adder 5, and tubular reactor 6 , Screw devolatilizer 7, condenser 8, liquid return flow meter 9, sizing feeding cylinder 10, upper endless conveyor belt 13, lower endless conveyor belt 14, sealing head baffle 15, roller body 16, heating zone 17, Interstitial cavity 18. The upper part of the reactor 1 is connected to the MMA feed pipe 2 with a flow meter, and the lower part of the reactor 1 is connected to the initiator adder 5 and multiple tubular reactors 6 through the discharge valve 3 and the feed flow meter 4, and then the screw is connected. The inlet of the volatilization device 7, the exhaust port of the screw devolatilization device 7 is connected to the upper part of the reactor 1 through the condenser 8 and the liquid return flow meter 9, and the extrusion port of the screw devolatilization device 7 is connected to the cylindrical shape at one end of the sizing feeding barrel 10 Inlet 11, the structure in which the middle part of the screed feeding barrel 10 smoothly transitions from one end of the cylindrical inlet 11 to the horizontal rectangular strip outlet 12 at the other end. The horizontal square strip outlet at the other end of the screed feeding barrel is connected to the upper and lower gaps. The upper and lower

endless conveyor belts

13, 14 are sealed by sealing tapes on both sides to the gap cavity 18 entrance. The gap cavity is provided with heating zones 17 above and below, and the upper and lower endless conveyor belts are equipped with multiple levels. Fit the roller body 16 of the ring-shaped transmission belt that forms a gap cavity opposite to the inside. The gap is empty. The sealing head baffle 15 is arranged in the gap 18, and the upper and lower baffles of the sealing head are fitted with the upper and lower ring conveyor belts without gaps. Between the two endless conveyor belts, the left and right sealing belts are attached to the two sides without gaps and are clamped between the two sealing belts.

实施例二Example two

图2所示：一种压克力板材一次反应挤出成型生产线包括反应釜1、MMA进料管2、出料阀3、供料流量计4、引发剂添加器5、管式反应器6、螺杆脱挥装置7、冷凝器8、回液流量计9、匀料送料筒10、上成型辊19、下成型辊20。由反应釜1至匀料送料筒10的结构与实施例一相同，匀料送料筒另一端的水平方形长条状出口直接出料，对应水平方形长条状出口设置多组上下间隙空间的上、下成型辊19、20，多组上、下成型辊19、20沿出料输送板材制板成型方向设置，上、下成型辊19、20受驱动在其上下间隙空间内压制成型板材。Figure 2 shows: an acrylic sheet one-time reaction extrusion molding production line including reactor 1, MMA feed pipe 2, discharge valve 3, feed flow meter 4, initiator adder 5, tubular reactor 6 , Screw devolatilizer 7, condenser 8, liquid return flow meter 9, sizing feeding barrel 10, upper forming roller 19, and lower forming roller 20. The structure from the reactor 1 to the screed feeding barrel 10 is the same as that of the first embodiment. The horizontal rectangular strip outlet at the other end of the screed feeding barrel directly discharges the material. Corresponding to the horizontal square strip outlet, there are multiple sets of upper and lower gap spaces. ,

Lower forming rollers

19, 20, multiple sets of upper and lower forming

rollers

19, 20 are arranged along the sheet forming direction of the discharging conveying plate, and the upper and lower forming

rollers

19, 20 are driven to press and form the plate in the upper and lower gap spaces.

在上述实施例中，进料流量计，供料流量计，引发剂添加器上设置添加流量计，回液流量计，上述流量计接产线控制器，对产线内的进料、送料、添加引发剂、回液整体控制。In the above embodiment, the feed flow meter, the feed flow meter, and the initiator adder are provided with an addition flow meter and a liquid return flow meter. The above flow meter is connected to the production line controller to control the feed, feeding, and Add initiator and overall control of liquid return.

实施例三Example three

图3、4、5所示：一种压克力板材一次反应挤出成型生产线，包括带有MMA进料管2的反应釜1和离心混料反应挤出装置100，离心混料反应挤出装置100包括挤出架21、前驱动电机22、外反应器23、内反应器24、后驱动电机25、外匀料器26、内匀料器27，外反应器23和外匀料器26同轴前、后设置并可旋转支撑在挤出架21内，外反应器外设齿圈经齿轮受前驱动电机22驱动，外匀料器外设齿圈经齿轮受后驱动电机25驱动，外反应器23的内圆周壁上圆周均布多道沿其轴向设置的圆弧反应槽28，内反应器同轴穿接在外反应器内并支撑在挤出架内，外反应器的内壁与内反应器外圆周壁留有混料间隙29，外反应器的器体内圆周错开圆弧反应槽位置均布多根轴向的外加热管道30，内反应器内中心轴向设置内加热管道31，内、外加热管道可选择为电加热或蒸汽加热管道，内反应器的器体内圆周均布多道引发剂通道32，多道引发剂通道前端经多通分料平衡阀33和引发剂供料泵34接引发剂罐35，每道引发剂通道沿轴向设有多道穿出内反应器外壁的引发剂送入管36，引发剂送入管穿出长度等于混料间隙径向厚度，引发剂送入管沿引发剂通道轴向管径渐变减小，外匀料器26前端经油封轴承37密封贴合外反应器23后端，内匀料器27连接内反应器24后端且同轴穿接在外匀料器26内，外匀料器26内壁设有多道轴向对应圆弧反应槽的离心槽，每道离心槽分为相连的前段离心槽38和后端离心槽39，前段离心槽的槽向为在前后方向上所处圆周直径扩大、在圆周方向上扭转90°，后段离心槽的槽向为在前后方向上所处圆周直径缩小、在圆周方向上扭转90°，上述扭转同向，对应前段离心槽和后端离心槽相接处的外匀料器上经冷凝器接至反应釜上部，内匀料器外圆周设置相连且分别对应前、后段离心槽的前扩径绞龙40和后缩径绞龙41，前扩径绞龙后部的直径扩大量小于前段离心槽的直径扩大量，后缩径绞龙前部的直径等于前扩径绞龙后部的直径，后缩径绞龙后部的直径缩小量小于后段离心槽的直径缩小量，后段离心槽后部与后缩径绞龙后部间隙出口接匀料送料筒一端的圆筒状进口，匀料送料筒中部由一端圆筒状进口圆滑过渡延伸至另一端水平方形长条状出口的结构，匀料送料筒另一端的水平方形长条状出口接板材成型装置。Figures 3, 4, and 5 show: an acrylic sheet one-time reactive extrusion molding production line, including a reactor 1 with an MMA feed tube 2 and a centrifugal mixing reaction extruding device 100, centrifugal mixing reaction extrusion The device 100 includes an extrusion frame 21, a front drive motor 22, an outer reactor 23, an inner reactor 24, a rear drive motor 25, an outer homogenizer 26, an inner homogenizer 27, an outer reactor 23 and an outer homogenizer 26 The coaxial front and rear are arranged and rotatably supported in the extrusion frame 21, the outer gear ring of the outer reactor is driven by the front drive motor 22 through the gear, and the outer gear ring of the outer screeder is driven by the rear drive motor 25 through the gear. On the inner circumferential wall of the outer reactor 23, a plurality of circular arc reaction grooves 28 arranged along its axial direction are evenly distributed. The inner reactor is coaxially connected in the outer reactor and supported in the extrusion frame. The inner wall of the outer reactor There is a mixing gap 29 with the outer circumferential wall of the inner reactor. A plurality of axial outer heating pipes 30 are evenly distributed on the inner circumference of the outer reactor body and the arc reaction tank position is staggered, and inner heating pipes are arranged axially in the center of the inner reactor. 31. The inner and outer heating pipes can be selected as electric heating or steam heating pipes. Multiple initiator channels 32 are evenly distributed on the circumference of the inner reactor body. The front end of the multiple initiator channels passes through a multi-way distribution balance valve 33 and initiator The feed pump 34 is connected to the initiator tank 35, and each initiator channel is provided with a plurality of initiator feed pipes 36 along the axial direction that penetrate the outer wall of the inner reactor. The length of the initiator feed pipe through which is equal to the radial direction of the mixing gap The diameter of the initiator feeding pipe decreases gradually along the axis of the initiator channel. The front end of the outer homogenizer 26 is sealed to the rear end of the outer reactor 23 through an oil seal bearing 37, and the inner homogenizer 27 is connected to the inner reactor 24. The end is coaxially connected in the outer homogenizer 26. The inner wall of the outer homogenizer 26 is provided with a plurality of centrifugal grooves corresponding to the arc reaction tank in the axial direction. Each centrifugal groove is divided into a connected front centrifugal groove 38 and a rear centrifugal groove. Groove 39, the groove direction of the front centrifugal groove is that the diameter of the circumference of the front centrifugal groove is enlarged and twisted 90° in the circumferential direction, and the groove direction of the centrifugal groove of the rear section is that the diameter of the circumference of the centrifugal groove is reduced in the front and rear direction, and in the circumferential direction. Twisted by 90°, the above-mentioned twisting is in the same direction, and the outer homogenizer corresponding to the junction of the front centrifugal tank and the rear centrifugal tank is connected to the upper part of the reactor through the condenser, and the outer circumference of the inner homogenizer is connected and corresponds to the front and back respectively. For the front expansion screw 40 and the rear reduction screw 41 of the centrifugal tank, the diameter expansion of the rear part of the front expansion screw is smaller than that of the front centrifugal tank, and the front diameter of the rear reduction screw is equal to the front expansion The diameter of the rear part of the rear diameter screw auger, the diameter reduction amount of the rear diameter reduction auger is smaller than the diameter reduction amount of the rear centrifugal tank, the rear part of the rear centrifugal tank and the rear part of the rear diameter reduction auger are connected to the feeder barrel The cylindrical inlet at one end, the middle part of the screed feeding barrel is smoothly transitioned from the cylindrical inlet at one end to the horizontal rectangular elongated outlet at the other end, and the horizontal rectangular elongated outlet at the other end of the screed feeding barrel is connected to the plate forming device .

本实施例中引发剂通道未穿透，内、外加热管道如采用蒸汽加热管道，在各自器体上另设回路，由输送进入端同时也为输出端，该类技术方案均为现有技术，在本实施例附图和说明中不作详述。In this embodiment, the initiator channel is not penetrated. If steam heating pipes are used for the inner and outer heating pipes, a separate circuit is provided on each body, and the input end is also the output end. This type of technical solution is the prior art It will not be described in detail in the drawings and descriptions of this embodiment.

Claims

一种压克力板材一次反应挤出成型生产线，包括带有MMA进料管的反应釜，其特征在于：所述反应釜下部经出料阀串接引发剂添加器和多个管式反应器后接螺杆脱挥装置进口，螺杆脱挥装置的排气口经冷凝器接至反应釜上部，螺杆脱挥装置的挤出口接匀料送料筒一端的圆筒状进口，匀料送料筒中部由一端圆筒状进口圆滑过渡延伸至另一端水平方形长条状出口的结构，匀料送料筒另一端的水平方形长条状出口接板材成型装置。An acrylic sheet one-time reaction extrusion molding production line, comprising a reactor with an MMA feed pipe, characterized in that: the lower part of the reactor is connected in series with an initiator adder and a plurality of tubular reactors through a discharge valve It is followed by the inlet of the screw devolatilizer. The exhaust port of the screw devolatilizer is connected to the upper part of the reactor via the condenser. The extrusion port of the screw devolatilizer is connected to the cylindrical inlet at one end of the screed feeding barrel. The cylindrical inlet at one end smoothly extends to the horizontal rectangular strip outlet at the other end, and the horizontal rectangular strip outlet at the other end of the screed feeding barrel is connected to the plate forming device.
一种压克力板材一次反应挤出成型生产线，包括带有MMA进料管的反应釜，其特征在于：还包括离心混料反应挤出装置，离心混料反应挤出装置包括挤出架、前驱动电机、外反应器、内反应器、后驱动电机、外匀料器、内匀料器，外反应器和外匀料器同轴前、后设置并可旋转支撑在挤出架内，外反应器外设齿圈经齿轮受前驱动电机驱动，外匀料器外设齿圈经齿轮受后驱动电机驱动，外反应器的内圆周壁上圆周均布多道沿其轴向设置的圆弧反应槽，内反应器同轴穿接在外反应器内并支撑在挤出架内，外反应器的内壁与内反应器外圆周壁留有混料间隙，外反应器的器体内圆周错开圆弧反应槽位置均布多根轴向的电加热或蒸汽加热管道，内反应器内中心轴向设置电加热或蒸汽加热管道，内反应器的器体内圆周均布多道引发剂通道，多道引发剂通道前端经多通分料平衡阀和引发剂供料泵接引发剂供料槽或罐，每道引发剂通道沿轴向设有多道穿出内反应器外壁的引发剂送入管，引发剂送入管穿出长度等于混料间隙径向厚度，引发剂送入管沿引发剂通道轴向管径渐变减小，外匀料器前端经油封轴承密封贴合外反应器后端，内匀料器连接内反应器后端且同轴穿接在外匀料器内，外匀料器内壁设有多道轴向对应圆弧反应槽的离心槽，每道离心槽分为相连的前段离心槽和后端离心槽，前段离心槽的槽向为在前后方向上所处圆周直径扩大、在圆周方向上扭转90°，后段离心槽的槽向为在前后方向上所处圆周直径缩小、在圆周方向上扭转90°，上述扭转同向，内匀料器外圆周设置相连且分别对应前、后段离心槽的前扩径绞龙和后缩径绞龙，前扩径绞龙后部的直径扩大量小于前段离心槽的直径扩大量，后缩径绞龙前部的直径等于前扩径绞龙后部的直径，后缩径绞龙后部的直径缩小量小于后段离心槽的直径缩小量，后段离心槽后部与后缩径绞龙后部间隙出口接匀料送料筒一端的圆筒状进口，匀料送料筒中部由一端圆筒状进口圆滑过渡延伸至另一端水平方形长条状出口的结构，匀料送料筒另一端的水平方形长条状出口接板材成型装置。An acrylic sheet one-time reaction extrusion molding production line, comprising a reaction kettle with an MMA feed tube, characterized in that it also includes a centrifugal mixing reaction extrusion device, the centrifugal mixing reaction extrusion device including an extrusion rack, Front drive motor, outer reactor, inner reactor, rear drive motor, outer homogenizer, inner homogenizer, outer reactor and outer homogenizer are coaxially arranged front and rear, and can be rotatably supported in the extrusion frame, The outer gear ring of the outer reactor is driven by the front drive motor through the gear, and the outer gear ring of the outer screeder is driven by the rear drive motor through the gear. The inner circumferential wall of the outer reactor is evenly distributed on the circumference of the outer reactor. Circular arc reaction tank, the inner reactor is coaxially connected in the outer reactor and supported in the extrusion frame, the inner wall of the outer reactor and the outer circumferential wall of the inner reactor leave a mixing gap, and the inner circumference of the outer reactor is staggered A number of axial electric heating or steam heating pipes are evenly distributed at the position of the arc reaction tank. Electric heating or steam heating pipes are arranged axially in the center of the inner reactor. Multiple initiator channels are evenly distributed on the circumference of the inner reactor. The front end of the initiator channel is connected to the initiator supply tank or tank through the multi-port balance valve and the initiator supply pump. Each initiator channel is provided with multiple initiators passing through the outer wall of the inner reactor along the axial direction. The length of the initiator feeding tube is equal to the radial thickness of the mixing gap. The diameter of the initiator feeding tube decreases gradually along the axis of the initiator channel. The front end of the outer homogenizer is sealed and fitted to the outer reactor through an oil seal bearing. At the end, the inner homogenizer is connected to the back end of the inner reactor and coaxially penetrates into the outer homogenizer. The inner wall of the outer homogenizer is provided with a plurality of centrifugal grooves corresponding to the arc reaction groove in the axial direction, and each centrifugal groove is divided into connected The front centrifugal groove and the rear centrifugal groove of the front centrifugal groove, the groove direction of the front centrifugal groove is the circumference of the front and rear direction is enlarged, and the circumference is twisted 90°, and the groove direction of the rear centrifugal groove is the circumference of the front and rear direction. The diameter is reduced, and the twisting is 90° in the circumferential direction. The above-mentioned twisting is in the same direction. The outer circumference of the inner homogenizer is connected to the front and rear centrifugal grooves. The front expanding screw and the rear reducing screw are respectively corresponding to the front and rear centrifugal grooves. The diameter enlargement of the rear part of the dragon is smaller than the diameter enlargement of the front centrifugal tank. The diameter of the front part of the rear reducing auger is equal to the diameter of the rear part of the front expanding auger. The diameter reduction of the rear part of the rear reducing auger is smaller than that of the rear part. The diameter of the centrifugal tank is reduced by the amount that the gap between the rear of the centrifugal tank and the rear of the rear reducing screw auger is connected to the cylindrical inlet at one end of the screed feeding barrel. The other end has a horizontal rectangular strip-shaped outlet structure, and the horizontal square-shaped strip outlet at the other end of the screed feeding barrel is connected to a plate forming device.
根据权利要求1或2所述的一种压克力板材一次反应挤出成型生产线，其特征是：所述板材成型装置包括上下间隙相对的两环状传送带和分别在上述上下间隙两侧封装成一间隙空腔两侧边的连续密封带，匀料送料筒另一端的水平方形长条状出口接间隙空腔一侧进口，间隙空腔的上下设置加热区，上、下环状传送带的上、下均设有多个水平贴合靠内相对形成间隙空腔的环状传动带的辊体。The one-time reactive extrusion molding production line for acrylic sheet according to claim 1 or 2, characterized in that: the sheet forming device comprises two ring-shaped conveyor belts with opposite upper and lower gaps and encapsulated on both sides of the upper and lower gaps respectively. The continuous sealing belts on both sides of the gap cavity, the horizontal rectangular strip outlet at the other end of the screeding feeding cylinder is connected to the side entrance of the gap cavity, the upper and lower sides of the gap cavity are equipped with heating zones, and the upper and lower ring conveyor belts are equipped with heating zones. There are a plurality of roller bodies that are horizontally attached to the endless transmission belts that form gap cavities in the lower part.
根据权利要求2所述的一种压克力板材一次反应挤出成型生产线，其特征是：所述间隙空腔内设有封料头挡板，封料头挡板上下无间隙贴合上下两环状传送带夹装在两环状传送带间、左右无间隙贴合两侧边的密封带夹装在两密封带间。The one-time reactive extrusion molding production line for acrylic sheet according to claim 2, characterized in that: the gap cavity is provided with a sealing head baffle, and the upper and lower baffles of the sealing head are attached to the upper and lower without a gap. The endless conveyor belt is clamped between the two endless conveyor belts, and the left and right sealing belts that are attached to the two sides without gaps are clamped between the two sealing belts.
根据权利要求1或2所述的一种压克力板材一次反应挤出成型生产线，其特征是：所述板材成型装置包括一组以上、上下间隙的两成型辊，一组以上的成型辊沿板材成型方向布置。The one-time reaction extrusion molding production line for acrylic sheet according to claim 1 or 2, characterized in that: the sheet forming device includes more than one set of two forming rolls with a gap between upper and lower sides, and more than one set of forming rolls The sheet forming direction is arranged.
根据权利要求1或2所述的一种压克力板材一次反应挤出成型生产线，其特征是：所述出料阀后接供料流量计，引发剂添加器上设置添加流量计，所述冷凝器经回液流量计接反应釜，所述MMA进料管上设置进料流量计，上述流量计接产线控制器。The one-time reaction extrusion molding production line for acrylic sheet according to claim 1 or 2, characterized in that: the discharge valve is followed by a supply flow meter, the initiator adder is provided with an addition flow meter, the The condenser is connected to the reaction kettle via a liquid return flow meter, a feed flow meter is arranged on the MMA feed pipe, and the above flow meter is connected to a production line controller.
根据权利要求1或2所述的一种压克力板材一次反应挤出成型生产线，其特征是：所述管式反应器为立式结构。The one-time reaction extrusion molding production line for acrylic sheet according to claim 1 or 2, wherein the tubular reactor is a vertical structure.
根据权利要求1或2所述的一种压克力板材一次反应挤出成型生产线，其特征是：所述螺杆脱挥装置的排气口经抽真空装置接冷凝器。The one-time reaction extrusion molding production line for acrylic sheet according to claim 1 or 2, characterized in that the exhaust port of the screw devolatilizer is connected to the condenser through a vacuum device.
根据权利要求2所述的一种压克力板材一次反应挤出成型生产线，其特征是：对应前段离心槽和后端离心槽相接处的外匀料器上经冷凝器接至反应釜上部。The one-time reaction extrusion molding production line for acrylic sheet according to claim 2, characterized in that: the outer homogenizer corresponding to the junction of the front centrifugal tank and the rear centrifugal tank is connected to the upper part of the reactor via a condenser .