Article(id=1319293426928042767, tenantId=1146029695717560320, journalId=1316781260334530699, issueId=1319293383915454866, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1005-0329.2025.09.009, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1742140800000, receivedDateStr=2025-03-17, revisedDate=1751385600000, revisedDateStr=2025-07-02, acceptedDate=null, acceptedDateStr=null, onlineDate=1792473664266, onlineDateStr=2026-10-20, pubDate=1759161600000, pubDateStr=2025-09-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792473664266, onlineIssueDateStr=2026-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792473664266, creator=13701087609, updateTime=1792473664266, updator=13701087609, issue=Issue{id=1319293383915454866, tenantId=1146029695717560320, journalId=1316781260334530699, year='2025', volume='53', issue='9', pageStart='1', pageEnd='118', issueExtLink='null', onlineDate='null', pubDate='1759161600000', pubDateStr='2025-09-30', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792473654011, creator='13701087609', updateTime=1792473654011, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=60, endPage=67, ext={EN=ArticleExt(id=1319293427129369360, articleId=1319293426928042767, tenantId=1146029695717560320, journalId=1316781260334530699, language=EN, title=Design and research of centrifugal‑enhanced dynamic shaft seal structure with floating blocks for plow blade mixer, columnId=null, journalTitle=Fluid Machinery, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To address the problem of minor leakage and accumulation of powdered media in the labyrinth seal of the new dynamic shaft seal device for a plow blade mixer,the working principle of the seal device was analyzed.A centrifugal sealing enhancement technology and design method based on floating blocks in spiral grooves was proposed,and optimization of the number of floating blocks and material selection was studied.Through simulation analysis and experimental verification of the centrifugal sealing enhancement structure with floating blocks,the results show that as the number of floating blocks increases,the leakage of powder particles decreases significantly;when the number of floating blocks increases from 2 to 4,the leakage rate decreases the fastest;when the number of floating blocks is 12,the leakage of powder particles decreases to 75 particles,indicating that the leakage situation has been significantly improved;when the number of floating blocks is designed to be 6,the leakage of powder media in other seals such as the labyrinth seal is 1.25 g,meeting the test requirements,and the leakage is about one‑third of that of the centrifugal seal structure without floating blocks,significantly improving the sealing performance of the dynamic shaft seal device and extending the service life of the seals.Since the floating blocks are in a floating state during operation,they can automatically compensate for the increased clearance due to wear,thereby ensuring continuous sealing effect.The research has certain guiding significance for improving the dynamic shaft sealing performance of plow blade mixers and other types of powder machinery equipment.
, authors=Junwei ZOU
1, 2, Yibo LI
1, Yuliang SONG
2, Jiabao SUN
2, authorsList=Junwei ZOU, Yibo LI, Yuliang SONG, Jiabao SUN, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1319293431118152487, articleId=1319293426928042767, tenantId=1146029695717560320, journalId=1316781260334530699, language=CN, title=犁刀混合机浮动块离心动轴密封增强结构设计与研究, columnId=1317484287230853622, journalTitle=流体机械, columnName=设计计算, runingTitle=null, highlight=null, articleAbstract=
针对犁刀混合机新型动轴密封装置中迷宫密封处存在少量粉体介质泄漏并堆积的问题,分析了该密封装置的工作原理,提出了一种基于螺旋槽内浮动块的离心密封增强技术及设计方法,并开展了浮动块数量优化与材料选择研究。通过对浮动块离心密封增强结构进行仿真分析与试验验证,结果表明:随着浮动块数量的增加,粉体颗粒泄漏量显著下降;当浮动块数量从2件增至4件时,泄漏量下降速率最快;当浮动块数量为12件时,粉体颗粒泄漏量降至75个,表明泄漏情况已得到明显改善;当浮动块数量设计为6件时,迷宫密封等其它密封处的粉体介质泄漏量为1.25 g,满足试验要求,且泄漏量约为无浮动块离心密封结构的1/3,显著提升了动轴密封装置的密封性能,并延长了密封件的使用寿命。由于浮动块在工作时处于浮动状态,可自动补偿因磨损而增大的间隙,从而确保持续的密封效果。研究对提升犁刀混合机及其他类型粉体机械设备的动轴密封性能具有一定的指导意义。
, authors=邹俊伟
1, 2, 李毅波
1, 宋玉梁
2, 孙家保
2, authorsList=邹俊伟, 李毅波, 宋玉梁, 孙家保, authorCompany=null, correspAuthors=null, authorNote=
邹俊伟(1983),男,博士,高级工程师,主要研究方向为先进与智能工程设备设计与制造,通信地址:412000湖南省株洲市芦淞区航机路珠华工业园湖南探索机械科技有限公司,E-mail:zjwniu@126.com。
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作者向本刊所投稿件一经本刊录用,则该论文的复制权、发行权、信息网络传播权、翻译权、汇编权等权利视为自动转让给本刊。本刊为国内各主要数据库收录期刊,本刊所发表的稿件将同时通过互联网进行网络出版或提供信息服务。, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=tWRWQvYXprW4jrr/b/kS5Q==, magXml=rO5RyYEHQUqg8/Og87E6Eg==, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=bgLquQnX7JEwpy3Y+r7THg==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=rXYbv8A1gW94h8U8SEz/xA==, mapNumber=null, fund=null)}, authors=[Author(id=1319293431613080367, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=zjwniu@126.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1319293431701160754, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, authorId=1319293431613080367, language=EN, stringName=Junwei ZOU, firstName=Junwei, middleName=null, lastName=ZOU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1College of Mechanical and Electrical Engineering,Central South University,Changsha 41000,China
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1中南大学 机电工程学院,长沙 410000
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邹俊伟(1983),男,博士,高级工程师,主要研究方向为先进与智能工程设备设计与制造,通信地址:412000湖南省株洲市芦淞区航机路珠华工业园湖南探索机械科技有限公司,E-mail:zjwniu@126.com。
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邹俊伟(1983),男,博士,高级工程师,主要研究方向为先进与智能工程设备设计与制造,通信地址:412000湖南省株洲市芦淞区航机路珠华工业园湖南探索机械科技有限公司,E-mail:zjwniu@126.com。
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articleId=1319293426928042767, language=CN, orderNo=3, keyword=离心密封)], refs=[Reference(id=1319293438701454183, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=1, rfOrder=0, authorNames=null, journalName=null, refType=null, unstructuredReference=吴艳泽,夏吉庆,康德福.奶牛全混合日粮混合机卸料机构的研制[J].东北农业大学学报,2011,42(11):89-92., articleTitle=null, refAbstract=null), Reference(id=1319293438789534568, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=1, rfOrder=1, authorNames=null, journalName=null, refType=null, unstructuredReference=WU Y Z,XIA J Q,KANG D F.Design of discharging mechanism for total mixed ration mixer[J].Journal of Northeast Agricultural 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Reference(id=1319293443457794961, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=22, rfOrder=42, authorNames=null, journalName=null, refType=null, unstructuredReference=邓荣根.基于离散元超细混合及粉碎的仿真[D].上海:华东理工大学,2013., articleTitle=null, refAbstract=null), Reference(id=1319293443520709522, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=22, rfOrder=43, authorNames=null, journalName=null, refType=null, unstructuredReference=DENG R G.Simulation of ultrafine mixture and disintegration based on discreteelement method[D].Shanghai:East China University of Science and Technology,2013., articleTitle=null, refAbstract=null)], funds=null, 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Parts of new‑type dynamic shaft seal assembly, figureFileSmall=qiddVmrdR+Gys4Ik+9Spew==, figureFileBig=bgLquQnX7JEwpy3Y+r7THg==, tableContent=null), ArticleFig(id=1319293434737836874, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=图1, caption=
新型动轴密封装置部件(a)螺旋密封 (b)密封座 (c)迷宫密封 (d)油封
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Schematic diagram of plow blade mixer structure, figureFileSmall=Zme2NZgPhFNccn8xkjq7Mw==, figureFileBig=t5DznkmkFncDD6sIP3TE3Q==, tableContent=null), ArticleFig(id=1319293435035632460, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=图2, caption=
犁刀混合机结构简图, figureFileSmall=Zme2NZgPhFNccn8xkjq7Mw==, figureFileBig=t5DznkmkFncDD6sIP3TE3Q==, tableContent=null), ArticleFig(id=1319293435102741325, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=EN, label=Fig.3, caption=
Schematic of new‑type dynamic shaft seal assembly, figureFileSmall=WdjuiGUvBt0YDB4PMTjeAw==, figureFileBig=H/V5v3DhxcKA1Y673j/nSw==, tableContent=null), ArticleFig(id=1319293435174044494, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=图3, caption=
新型动轴密封装置结构示意(a)等轴测图 (b)剖视图
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Operating state of spiral seal and floating block assembly, figureFileSmall=8PVAiLeKJAWc3sijFNNfuw==, figureFileBig=0ua1tmZ31XmHOzyOynqoEA==, tableContent=null), ArticleFig(id=1319293435350205264, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=图4, caption=
螺旋密封与浮动块组合工作状态(a)静止状态 (b)工作状态
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Optimal design of the dynamic shaft seal assembly, figureFileSmall=JSr7ZQBk+ECfW9ocz+KF0g==, figureFileBig=CpvxMftE/D7J70ldaUxQHg==, tableContent=null), ArticleFig(id=1319293435492811602, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=图5, caption=
动轴密封装置优化设计, figureFileSmall=JSr7ZQBk+ECfW9ocz+KF0g==, figureFileBig=CpvxMftE/D7J70ldaUxQHg==, tableContent=null), ArticleFig(id=1319293435694138195, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=EN, label=Fig.6, caption=
Schematic diagram of the combined structure of spiralseal and floating block, figureFileSmall=0c54eZdoaWkhIH2zwuheEg==, figureFileBig=jq+OQ6VSb1+OOqC+C9NR1w==, tableContent=null), ArticleFig(id=1319293435748664148, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=图6, caption=
螺旋密封与浮动块组合结构示意(a)浮动块槽 (b)浮动块 (c)左视图
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Working principle of spiral seal, figureFileSmall=EW7hMHyo51PwawXD8CxzPA==, figureFileBig=FWWnIyu4IHJhF6c6AtGmZg==, tableContent=null), ArticleFig(id=1319293435874493270, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=图7, caption=
螺旋密封工作原理, figureFileSmall=EW7hMHyo51PwawXD8CxzPA==, figureFileBig=FWWnIyu4IHJhF6c6AtGmZg==, tableContent=null), ArticleFig(id=1319293435945796439, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=EN, label=Fig.8, caption=
Simulation model of dynamic shaft seal assembly, figureFileSmall=5qboTrR/5Ca/Im1mGxVlSQ==, figureFileBig=ejxpMzSTCDMx5Rbz1qgiqA==, tableContent=null), ArticleFig(id=1319293436012905304, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=图8, caption=
动轴密封装置仿真模型, figureFileSmall=5qboTrR/5Ca/Im1mGxVlSQ==, figureFileBig=ejxpMzSTCDMx5Rbz1qgiqA==, tableContent=null), ArticleFig(id=1319293436080014169, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=EN, label=Fig.9, caption=
Powder particle leakage amount with different numbers of floating blocks, figureFileSmall=8R+VrAJ7zpJEkYbS879hpg==, figureFileBig=i8TMKZTSaWLMGVM0NDgrnQ==, tableContent=null), ArticleFig(id=1319293436151317338, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=图9, caption=
不同浮动块数量下粉体颗粒泄漏量, figureFileSmall=8R+VrAJ7zpJEkYbS879hpg==, figureFileBig=i8TMKZTSaWLMGVM0NDgrnQ==, tableContent=null), ArticleFig(id=1319293436222620507, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=EN, label=Fig.10, caption=
Influence of floating block quantity on sealing effectiveness of dynamic shaft seal assembly, figureFileSmall=NcFsGqj+z7g0JpD06lZaGg==, figureFileBig=jlaaJPwn7mPoHGSKwTeDYQ==, tableContent=null), ArticleFig(id=1319293436293923676, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=图10, caption=
浮动块数量对动轴密封装置密封效果的影响, figureFileSmall=NcFsGqj+z7g0JpD06lZaGg==, figureFileBig=jlaaJPwn7mPoHGSKwTeDYQ==, tableContent=null), ArticleFig(id=1319293436356838237, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=EN, label=Fig.11, caption=
Physical drawing of disassembled dynamic shaft seal assembly after testing, figureFileSmall=suvvQ/b7hjCf63ErLV48XA==, figureFileBig=ar3eMoDFl1pwM/MKOBrQ+Q==, tableContent=null), ArticleFig(id=1319293436423947102, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=图11, caption=
动轴密封装置试验后拆卸实物图(a)螺旋密封 (b)密封座 (c)迷宫密封端面
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Material intrinsic parameters and contact parameters
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| 项目 | 数值 |
|---|
| 颗粒直径/mm | 0.3 |
| 颗粒密度/(g·cm-3) | 2.0 |
| 颗粒泊松比 | 0.25 |
| 颗粒剪切模量/Pa | 1.1×1010 |
| 304不锈钢密度(零部件材质)/(g·cm-3) | 7.93 |
| 304不锈钢泊松比 | 0.25 |
| 304不锈钢剪切模量/Pa | 7.94×1010 |
| 颗粒-颗粒恢复系数 | 0.225 |
| 颗粒-颗粒静摩擦系数 | 0.375 |
| 颗粒-颗粒滚动摩擦系数 | 0.25 |
| 颗粒-304不锈钢恢复系数 | 0.225 |
| 颗粒-304不锈钢静摩擦系数 | 0.698 |
| 颗粒-304不锈钢滚动摩擦系数 | 0.225 |
| JKR表面能/(J·m-2) | 0.000 825 |
), ArticleFig(id=1319293436553970528, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=表1, caption=
材料本征参数及接触参数
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| 项目 | 数值 |
|---|
| 颗粒直径/mm | 0.3 |
| 颗粒密度/(g·cm-3) | 2.0 |
| 颗粒泊松比 | 0.25 |
| 颗粒剪切模量/Pa | 1.1×1010 |
| 304不锈钢密度(零部件材质)/(g·cm-3) | 7.93 |
| 304不锈钢泊松比 | 0.25 |
| 304不锈钢剪切模量/Pa | 7.94×1010 |
| 颗粒-颗粒恢复系数 | 0.225 |
| 颗粒-颗粒静摩擦系数 | 0.375 |
| 颗粒-颗粒滚动摩擦系数 | 0.25 |
| 颗粒-304不锈钢恢复系数 | 0.225 |
| 颗粒-304不锈钢静摩擦系数 | 0.698 |
| 颗粒-304不锈钢滚动摩擦系数 | 0.225 |
| JKR表面能/(J·m-2) | 0.000 825 |
), ArticleFig(id=1319293438214914913, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=EN, label=Tab.2, caption=
DEM simulation model parameters
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| 项目 | 数值 |
|---|
| 腔体容积/L | 26 |
| 腔体内径/mm | 300 |
| 腔体长度/mm | 335 |
| 动轴直径/mm | 174 |
| 螺旋头数 | 2 |
| 螺旋螺距、槽深/mm | 40,14.5 |
| 浮动块长、高、宽/mm | 84,8,5 |
| 浮动块槽深/mm | 7 |
| 动轴转速/(r·min-1) | 165 |
| 颗粒填充率 | 0.3~0.5 |
| 密封座长度/mm | 95 |
| 密封座内孔直径/mm | 206 |
), ArticleFig(id=1319293438340744034, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=表2, caption=
DEM仿真模型参数
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| 项目 | 数值 |
|---|
| 腔体容积/L | 26 |
| 腔体内径/mm | 300 |
| 腔体长度/mm | 335 |
| 动轴直径/mm | 174 |
| 螺旋头数 | 2 |
| 螺旋螺距、槽深/mm | 40,14.5 |
| 浮动块长、高、宽/mm | 84,8,5 |
| 浮动块槽深/mm | 7 |
| 动轴转速/(r·min-1) | 165 |
| 颗粒填充率 | 0.3~0.5 |
| 密封座长度/mm | 95 |
| 密封座内孔直径/mm | 206 |
), ArticleFig(id=1319293438416241507, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=EN, label=Tab.3, caption=
Simulation analysis results
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| 试验编号 | 浮动块数量/件 | 粉体颗粒泄漏数量/个 |
|---|
| 1 | 0 | 1 996 |
| 2 | 2 | 1 983 |
| 3 | 4 | 1 206 |
| 4 | 6 | 1 110 |
| 5 | 8 | 523 |
| 6 | 10 | 175 |
| 7 | 12 | 75 |
), ArticleFig(id=1319293438487544676, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=表3, caption=
仿真分析结果
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| 试验编号 | 浮动块数量/件 | 粉体颗粒泄漏数量/个 |
|---|
| 1 | 0 | 1 996 |
| 2 | 2 | 1 983 |
| 3 | 4 | 1 206 |
| 4 | 6 | 1 110 |
| 5 | 8 | 523 |
| 6 | 10 | 175 |
| 7 | 12 | 75 |
), ArticleFig(id=1319293438554653541, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=EN, label=Tab.4, caption=
Operating conditions of plow blade mixer
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| 项目 | 限制值 |
|---|
| 腔体内绝对压力/MPa | 约为0.1 |
| 腔体填充率 | ≤70% |
| 动轴转速/(r·min-1) | 110 |
), ArticleFig(id=1319293438609179494, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293426928042767, language=CN, label=表4, caption=
犁刀混合机工作条件
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| 项目 | 限制值 |
|---|
| 腔体内绝对压力/MPa | 约为0.1 |
| 腔体填充率 | ≤70% |
| 动轴转速/(r·min-1) | 110 |
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