CN110017681A - Belt drying machine - Google Patents
Belt drying machine Download PDFInfo
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- CN110017681A CN110017681A CN201910315162.7A CN201910315162A CN110017681A CN 110017681 A CN110017681 A CN 110017681A CN 201910315162 A CN201910315162 A CN 201910315162A CN 110017681 A CN110017681 A CN 110017681A
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- drying box
- belt
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- heat exchanger
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/20—Cleaning of moving articles, e.g. of moving webs or of objects on a conveyor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts propelling the materials over stationary surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
- F26B21/001—Air generating units, e.g. movable or independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
- F26B21/50—Ducting arrangements from the source of air or other gases to the materials or objects being dried
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Drying Of Solid Materials (AREA)
Abstract
带式烘干机，烘干箱体内置若干层输送网带，上料输送带与烘干箱体内顶层输送网带相连，每层输送网带端部安装毛刷辊，毛刷辊上方设置高压水喷淋管，每层输送网带下方安装气流分配器，气流分配器的壳体一端开口，壳体顶部设置若干出风孔，烘干箱体安装废气余热回收机构，废气余热回收机构的热风机的出口与废热回收器内前气液换热器的壳程进口相通，前气液换热器的管程出口与后气液换热器的管程进口相连，后气液换热器的壳程出口与热风炉相连。本发明设置废气余热回收机构，将高温废气通过废热回收器对热风炉进口气体进行换热，有效降低了热风炉能耗，主体框架具有卡接螺丝固定结构，可快速拆装，具有设计合理、热风利用率高和环保节能的优点。
The belt dryer has several layers of conveyor mesh belts built into the drying box. The feeding conveyor belt is connected to the top conveyor mesh belt in the drying box. Brush rollers are installed at the ends of each layer of conveyor mesh belts, and high pressure is set above the brush rollers. Water spray pipe, an airflow distributor is installed under each layer of conveying mesh belt, one end of the air distributor shell is open, and a number of air outlet holes are arranged on the top of the shell. The drying box is equipped with an exhaust gas waste heat recovery mechanism. The outlet of the fan is connected with the shell side inlet of the front gas-liquid heat exchanger in the waste heat recovery device, the tube side outlet of the front gas-liquid heat exchanger is connected with the tube side inlet of the rear gas-liquid heat exchanger, and the The shell side outlet is connected to the hot blast stove. The present invention is provided with an exhaust gas waste heat recovery mechanism, and the high-temperature exhaust gas is passed through the waste heat recovery device to exchange heat with the inlet gas of the hot blast stove, which effectively reduces the energy consumption of the hot blast stove. The advantages of high utilization rate of hot air and environmental protection and energy saving.
Description
技术领域technical field
本发明涉及农作物处理设备技术领域，具体涉及一种带式烘干机。The invention relates to the technical field of crop processing equipment, in particular to a belt dryer.
背景技术Background technique
农作物，包括稻米、小麦、油菜籽、辣椒等等，在收获以后需要将其干燥处理，便于存储和加工处理。为了尽快完成农作物的干燥处理，人们用烘干设备进行加工。现有技术的农作物烘干设备，大多采用的是筒式烘干箱，用煤、柴油或者电产生热风作为热源，现有筒式烘干箱烘干行程较短，农作物烘干效率较低，而且结构复杂，生产加工比较困难，设备投资比较大，此外现有烘干箱热风由下而上流通过程中容易出现混流和扰流问题，热风利用率较低，能耗高，导致设备运行成本居高不下。Crops, including rice, wheat, rapeseed, peppers, etc., need to be dried after harvest for storage and processing. In order to complete the drying treatment of crops as soon as possible, people use drying equipment for processing. Most of the crop drying equipment in the prior art adopts a cylindrical drying box, which uses coal, diesel oil or electricity to generate hot air as a heat source. The drying stroke of the existing cylindrical drying box is short, and the drying efficiency of crops is low. In addition, the structure is complex, the production and processing are relatively difficult, and the equipment investment is relatively large. In addition, the mixed flow and turbulence problems are prone to occur in the hot air circulation process of the existing drying box, the hot air utilization rate is low, and the energy consumption is high, resulting in equipment operating costs. Stay high.
发明内容SUMMARY OF THE INVENTION
本发明提供了一种带式烘干机，以解决现有技术存在的烘干效率低、结构复杂、热风利用率低和运行成本高的问题。The invention provides a belt dryer to solve the problems of low drying efficiency, complex structure, low utilization rate of hot air and high operating cost in the prior art.
本发明解决技术问题所采用的技术方案是：The technical scheme adopted by the present invention to solve the technical problem is:
一种带式烘干机，包括烘干箱体、上料输送带、驱动电机和热风炉，烘干箱体内置若干层输送网带，上料输送带的出口与烘干箱体内顶层输送网带相连，输送网带固定在烘干箱体内的主框架上，主框架由顶梁、底座、若干立柱和若干支撑横梁彼此卡接而成，每层输送网带端部安装毛刷辊，毛刷辊上方设置高压水喷淋管，每层输送网带侧部安装若干个翻料机构，翻料机构由烘干箱体外部的翻料电机和翻料轴组成，翻料电机带动置于输送网带上方的翻料轴转动，每层输送网带下方安装若干个气流分配器，气流分配器的壳体一端开口，壳体顶部设置若干出风孔，壳体内中部安装若干块气流阻挡板，每个气流分配器进口与烘干箱体侧部相应设置的立式风箱相通，烘干箱体的进风口通过热风风道与立式风箱进口相连，热风炉出口与进风口相连，烘干箱体安装废气余热回收机构，废气余热回收机构的热风机安装在烘干箱体顶部，热风机的出口与废热回收器内前气液换热器的壳程进口相通，前气液换热器的壳程出口与排风风机相连，前气液换热器的管程出口与后气液换热器的管程进口相连，进风风机的出口与后气液换热器的壳程进口相连，后气液换热器的壳程出口与热风炉相连。A belt dryer includes a drying box, a feeding conveyor belt, a drive motor and a hot blast stove. Several layers of conveyor mesh belts are built in the drying box, and the outlet of the feeding conveyor belt is connected to the top conveyor mesh in the drying box. The belts are connected, and the conveyor mesh belt is fixed on the main frame in the drying box. The main frame is formed by the top beam, the base, a number of columns and a number of supporting beams. A high-pressure water spray pipe is set above the brush roller, and several turning mechanisms are installed on the side of the conveyor mesh belt on each layer. The turning mechanism is composed of a turning motor and a turning shaft outside the drying box. The turning shaft above the mesh belt rotates, and several airflow distributors are installed under each layer of the conveyor mesh belt. One end of the housing of the airflow distributor is open. The inlet of each airflow distributor is communicated with the vertical bellows correspondingly arranged on the side of the drying box. The exhaust gas waste heat recovery mechanism is installed on the body, and the hot air blower of the exhaust gas waste heat recovery mechanism is installed on the top of the drying box. The shell side outlet is connected with the exhaust fan, the tube side outlet of the front gas-liquid heat exchanger is connected with the tube side inlet of the rear gas-liquid heat exchanger, and the outlet of the air inlet fan is connected with the shell side inlet of the rear gas-liquid heat exchanger. The shell side outlet of the rear gas-liquid heat exchanger is connected to the hot blast stove.
上述输送网带两侧分别安装挡风板，防止热量由侧部流失，确保热风由下而上流经输送网带。Air baffles are installed on both sides of the conveyor mesh belt to prevent heat loss from the side and ensure that the hot air flows through the conveyor mesh belt from bottom to top.
上述烘干箱体由外壳、中部的保温板和包覆在保温板内侧的铝箔布组成，铝箔布可用于烘干箱体内隔热、反热和避免热量传导流失。The above drying box is composed of an outer shell, an insulation board in the middle, and an aluminum foil cloth wrapped on the inner side of the insulation board.
上述气流分配器出风孔设置密度随着离进口距离越远密度越小，从而保障流向输送网带的气流均匀。The setting density of the air outlet holes of the above-mentioned airflow distributor decreases with the distance from the inlet, so as to ensure uniform airflow to the conveying mesh belt.
上述气流分配器的进口处活动安装扰流板，以保障进入每个气流分配器进风量相等。A spoiler is movably installed at the inlet of the above-mentioned airflow distributor to ensure that the air intake into each airflow distributor is equal.
本发明使用时，农作物通过上料输送带送入烘干箱体内，输送网带将物料传送过程中，热风炉将高温热风通过立式风箱传送至相应的气流分配器中，热风由气流分配器顶部的出风孔由下而上吹出，热风对输送网带上的物料进行烘干，物料由上层输送网带由上而下连续经过多层输送网带的传送，每层输送网带端部的毛刷辊用来清除网带上的残留物料，保持网带清洁，高压水喷淋管可用于烘干箱体内的在线消防，每层输送网带上的翻料机构可使物料输送过程中连续翻动，确保受热均匀，实现快速烘干效果，气流分配器内置的气流阻挡板用来阻挡气流直接到达壳体尽头造成风压不均，烘干箱体的热风机可将箱体内顶部的高温高湿气体送至与废热回收器内前气液换热器的壳程中，前气液换热器管程进入的水与壳程高温高湿废气换热，换热后的废气通过排风风机排出，升温后的水进入后气液换热器的管程中，进风风机将新风送至后气液换热器的壳程中与管程中的高温水换热，升温的新风最后送至热风炉中。When the present invention is used, the crops are fed into the drying box through the feeding conveyor belt. During the conveying process of the material by the conveyor mesh belt, the hot blast stove transmits the high-temperature hot air through the vertical bellows to the corresponding airflow distributor, and the hot air is sent by the airflow distributor. The air outlet at the top blows out from the bottom to the top, and the hot air dries the material on the conveyor mesh belt. The material is continuously conveyed by the upper conveyor mesh belt from top to bottom through the multi-layer conveyor mesh belt. The brush roller is used to remove the residual material on the mesh belt and keep the mesh belt clean. The high-pressure water spray pipe can be used for online fire fighting in the drying box. Continuous flipping ensures uniform heating and achieves fast drying effect. The built-in airflow blocking plate of the airflow distributor is used to prevent the airflow from directly reaching the end of the shell, resulting in uneven wind pressure. The high-humidity gas is sent to the shell side of the front gas-liquid heat exchanger in the waste heat recovery device. The water entering the tube side of the front gas-liquid heat exchanger exchanges heat with the high-temperature and high-humidity exhaust gas on the shell side, and the exhaust gas after heat exchange passes through the exhaust air. The fan is discharged, the heated water enters the tube side of the rear gas-liquid heat exchanger, and the intake fan sends the fresh air to the shell side of the rear gas-liquid heat exchanger to exchange heat with the high-temperature water in the tube side, and the heated fresh air finally sent to the hot blast stove.
本发明设置废气余热回收机构，将高温废气通过废热回收器对热风炉进口气体进行换热，有效降低了热风炉能耗，同时主体框架具有卡接螺丝固定结构，可快速拆装，具有设计合理、热风利用率高和环保节能的优点。The invention is provided with an exhaust gas waste heat recovery mechanism, and the high-temperature exhaust gas is used to exchange heat with the inlet gas of the hot blast stove through the waste heat recovery device, which effectively reduces the energy consumption of the hot blast stove. , The advantages of high utilization rate of hot air and environmental protection and energy saving.
附图说明Description of drawings
下面结合附图和实施例对本发明进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
图1是本发明的正视示意图；Fig. 1 is the front view schematic diagram of the present invention;
图2是本发明的后视示意图；Fig. 2 is the rear view schematic diagram of the present invention;
图3是本发明烘干箱体的内部结构示意图；Fig. 3 is the internal structure schematic diagram of the drying box of the present invention;
图4是图3中A向结构示意图；Fig. 4 is the structural representation of A direction among Fig. 3;
图5是本发明烘干箱体剖面结构示意图；5 is a schematic diagram of the cross-sectional structure of the drying box of the present invention;
图6是本发明气流分配器的结构示意图。FIG. 6 is a schematic view of the structure of the airflow distributor of the present invention.
图中1烘干箱体、2上料输送带、3驱动电机、4输送网带、5气流分配器、6顶梁、7底座、8立柱、9支撑横梁、10挡风板、11外壳、12保温板、13铝箔布、14翻料电机、15翻料轴、16毛刷辊、17高压水喷淋管、18热风机、19废热回收器、20前气液换热器、21排风风机、22后气液换热器、23进风风机、24热风炉、25进风口、26热风风道、27立式风箱、51壳体、52进口、53出风孔、54气流阻挡板、55扰流板。In the figure 1 drying box, 2 feeding conveyor belt, 3 driving motor, 4 conveying mesh belt, 5 airflow distributor, 6 top beam, 7 base, 8 column, 9 supporting beam, 10 windshield, 11 shell, 12 insulation board, 13 aluminum foil cloth, 14 turning motor, 15 turning shaft, 16 brush roller, 17 high pressure water spray pipe, 18 hot air blower, 19 waste heat recovery device, 20 front gas-liquid heat exchanger, 21 exhaust air Fan, 22 rear gas-liquid heat exchanger, 23 air inlet fan, 24 hot blast stove, 25 air inlet, 26 hot air duct, 27 vertical bellows, 51 shell, 52 inlet, 53 air outlet, 54 airflow blocking plate, 55 spoiler.
具体实施方式Detailed ways
如图1、图2、图3、图4、图5和图6所示，一种带式烘干机，包括烘干箱体1、上料输送带2、驱动电机3和热风炉24，烘干箱体由外壳11、中部的保温板12和包覆在保温板内侧的铝箔布13组成，铝箔布可用于烘干箱体内隔热、反热和避免热量传导流失，烘干箱体1内置若干层输送网带4，上料输送带2的出口与烘干箱体内顶层输送网带相连，输送网带4固定在烘干箱体内的主框架上，主框架由顶梁6、底座7、若干立柱8和若干支撑横梁9彼此卡接而成，每层输送网带端部安装毛刷辊16，毛刷辊上方设置高压水喷淋管17，输送网带两侧分别安装挡风板10，防止热量由侧部流失，确保热风由下而上流经输送网带，每层输送网带4侧部安装若干个翻料机构，翻料机构由烘干箱体外部的翻料电机14和翻料轴15组成，翻料电机带动置于输送网带上方的翻料轴转动，每层输送网带下方安装若干个气流分配器5，气流分配器5的壳体51一端开口，壳体顶部设置若干出风孔53，壳体内中部安装若干块气流阻挡板54，气流分配器出风孔设置密度随着离进口距离越远密度越小，从而保障流向输送网带的气流均匀，气流分配器的进口处活动安装扰流板55，以保障进入每个气流分配器进风量相等，每个气流分配器进口52与烘干箱体侧部相应设置的立式风箱27相通，烘干箱体的进风口25通过热风风道26与立式风箱27进口相连，热风炉24出口与进风口25相连，烘干箱体安装废气余热回收机构，废气余热回收机构的热风机18安装在烘干箱体顶部，热风机的出口与废热回收器19内前气液换热器20的壳程进口相通，前气液换热器的壳程出口与排风风机21相连，前气液换热器的管程出口与后气液换热器22的管程进口相连，进风风机23的出口与后气液换热器22的壳程进口相连，后气液换热器22的壳程出口与热风炉24相连。As shown in Figure 1, Figure 2, Figure 3, Figure 4, Figure 5 and Figure 6, a belt dryer includes a drying box 1, a feeding conveyor belt 2, a drive motor 3 and a hot blast stove 24, The drying box is composed of an outer shell 11, a thermal insulation board 12 in the middle, and an aluminum foil cloth 13 wrapped on the inside of the thermal insulation board. Several layers of conveyor mesh belts 4 are built in. The outlet of the feeding conveyor belt 2 is connected to the top conveyor mesh belt in the drying box. The conveyor mesh belt 4 is fixed on the main frame in the drying box. The main frame consists of a top beam 6 and a base 7 , A number of uprights 8 and a number of support beams 9 are clamped to each other, and a brush roller 16 is installed at the end of each layer of conveying mesh belt, a high-pressure water spray pipe 17 is installed above the brush roller, and windshields are installed on both sides of the conveying mesh belt. 10. Prevent the heat from being lost from the side, and ensure that the hot air flows through the conveyor mesh belt from bottom to top. Several turning mechanisms are installed on the side of the conveyor mesh belt 4 on each layer. The turning shaft is composed of 15. The turning motor drives the turning shaft placed above the conveyor mesh belt to rotate. Several airflow distributors 5 are installed under each layer of the conveyor mesh belt. A number of air outlet holes 53 are provided, and a number of airflow blocking plates 54 are installed in the middle of the housing. The density of the air outlet holes of the airflow distributor decreases with the distance from the inlet, so as to ensure uniform airflow to the conveyor belt. The spoiler 55 is movably installed at the inlet of the air conditioner to ensure that the intake air volume of each air distributor is equal, and the inlet 52 of each air distributor is communicated with the vertical bellows 27 correspondingly arranged on the side of the drying box. The air inlet 25 is connected to the inlet of the vertical bellows 27 through the hot air duct 26, the outlet of the hot blast stove 24 is connected to the air inlet 25, the drying box is equipped with an exhaust gas waste heat recovery mechanism, and the hot air blower 18 of the exhaust gas waste heat recovery mechanism is installed in the drying box. At the top, the outlet of the hot air blower is connected with the shell side inlet of the front gas-liquid heat exchanger 20 in the waste heat recovery device 19, the shell side outlet of the front gas-liquid heat exchanger is connected with the exhaust fan 21, and the pipe of the front gas-liquid heat exchanger is connected with the exhaust fan 21. The outlet of the gas-liquid heat exchanger 22 is connected with the inlet of the tube side of the rear gas-liquid heat exchanger 22, the outlet of the air inlet fan 23 is connected with the inlet of the shell side of the rear gas-liquid heat exchanger 22, and the outlet of the shell side of the rear gas-liquid heat exchanger 22 is connected to the hot blast stove. 24 connected.
本发明使用时，农作物通过上料输送带送入烘干箱体内，输送网带将物料传送过程中，热风炉将高温热风通过立式风箱传送至相应的气流分配器中，热风由气流分配器顶部的出风孔由下而上吹出，热风对输送网带上的物料进行烘干，物料由上层输送网带由上而下连续经过多层输送网带的传送，每层输送网带端部的毛刷辊用来清除网带上的残留物料，保持网带清洁，高压水喷淋管可用于烘干箱体内的在线消防，每层输送网带上的翻料机构可使物料输送过程中连续翻动，确保受热均匀，实现快速烘干效果，气流分配器内置的气流阻挡板用来阻挡气流直接到达壳体尽头造成风压不均，烘干箱体的热风机可将箱体内顶部的高温高湿气体送至与废热回收器内前气液换热器的壳程中，前气液换热器管程进入的水与壳程高温高湿废气换热，换热后的废气通过排风风机排出，升温后的水进入后气液换热器的管程中，进风风机将新风送至后气液换热器的壳程中与管程中的高温水换热，升温的新风最后送至热风炉中。When the present invention is used, the crops are fed into the drying box through the feeding conveyor belt. During the conveying process of the material by the conveyor mesh belt, the hot blast stove transmits the high-temperature hot air through the vertical bellows to the corresponding airflow distributor, and the hot air is sent by the airflow distributor. The air outlet at the top blows out from the bottom to the top, and the hot air dries the material on the conveyor mesh belt. The material is continuously conveyed by the upper conveyor mesh belt from top to bottom through the multi-layer conveyor mesh belt. The brush roller is used to remove the residual material on the mesh belt and keep the mesh belt clean. The high-pressure water spray pipe can be used for online fire fighting in the drying box. Continuous flipping ensures uniform heating and achieves fast drying effect. The built-in airflow blocking plate of the airflow distributor is used to prevent the airflow from directly reaching the end of the shell, resulting in uneven wind pressure. The high-humidity gas is sent to the shell side of the front gas-liquid heat exchanger in the waste heat recovery device. The water entering the tube side of the front gas-liquid heat exchanger exchanges heat with the high-temperature and high-humidity exhaust gas on the shell side, and the exhaust gas after heat exchange passes through the exhaust air. The fan is discharged, the heated water enters the tube side of the rear gas-liquid heat exchanger, and the intake fan sends the fresh air to the shell side of the rear gas-liquid heat exchanger to exchange heat with the high-temperature water in the tube side, and the heated fresh air finally sent to the hot blast stove.
Claims (5)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910315162.7A CN110017681A (en) | 2019-04-18 | 2019-04-18 | Belt drying machine |
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| CN201910315162.7A CN110017681A (en) | 2019-04-18 | 2019-04-18 | Belt drying machine |
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| CN110017681A true CN110017681A (en) | 2019-07-16 |
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| CN111059889A (en) * | 2019-12-25 | 2020-04-24 | 上海南崛中药机械制造有限公司 | A belt dryer |
| CN115679730A (en) * | 2021-07-28 | 2023-02-03 | 精工爱普生株式会社 | Fiber splitting device and fiber body manufacturing device |
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