產(chǎn)品詳情
前三種方法獲得高溫均需在釜體上增設(shè)夾套,由于溫度變化的幅度大,使釜的夾套及殼體承受溫度變化而產(chǎn)生溫差壓力。采用電加熱時(shí),設(shè)備較輕便簡(jiǎn)單,溫度較易調(diào)節(jié),而且不用泵、爐子、煙囪等設(shè)施,開動(dòng)也非常簡(jiǎn)單,危險(xiǎn)性不高,成本費(fèi)用較低,但操作費(fèi)用較其它加熱方法高,熱效率在85%以下,因此適用于加熱溫度在4℃以下和電能價(jià)格較低的地方。反應(yīng)釜攪拌結(jié)構(gòu)在反應(yīng)釜中通常要進(jìn)行化學(xué)反應(yīng),為保證反應(yīng)能均勻而較快的進(jìn)行,提率,通常在反應(yīng)釜中裝有相應(yīng)的攪拌裝置,于是便帶來傳動(dòng)軸的動(dòng)密封及防止泄漏的問題。
ZIMMER M10X1H
FINDER繼電器563481204000
SCHRACK RT424024
MD MICRODETECTORS MDI38G 1552
OMRON E5AC-CC4A5M-005
BURKERT 電磁閥305886
OMRON A22NN-BGM-NAA-G202-NN
Eaton Moeller 266031 N4-4-1250
BECKHOFF ZK2002-6400-0050
MD MICRODETECTORS MDI63A 332
Gefran-2019 F061392 RK-2-1250-E L000X000X10X0XX
Gefran-2019 F032117 1800-RRR0IV-1101-000
Gefran-2019 F057373 KS-C-E-E-B16U-M-V 2130X000U00
COMET silicone paste 20ML
OMRON E6A2-CW5C 360P/R 0.5M
ANSALDO MM98
BANNER LEDWLA290SSP6-XQ
HPI P1DBK2026HA2015HL30D01N
UNIVER J16A440400A
LEUZE 50117787 CML730i-T10-480.A-M12
小強(qiáng)工控 CARLO GAVAZZI PS21L-PT20BR-H00
Turck RSSW-RKSW451-0,5M,Nr.6914117
Eaton Moeller XL70F300
FINDER繼電器7S1690485420
hastings 848-2
SCHMERSAL 151181531 TFH 232-20
RIEGLER 248.52
KEB 15E4T60-3A01_KEB
Rexroth R901224218;DA 6 VA2A5X/200FSM
CASAPPA 00374791 PLP10.2 S0-81E1-LBB/BA-V-EL
ATR ATR VM 135
hastings ST-240
M&C 90P1500
TCH 63 6090 310 067 管接頭
ZIEHL-ABEGG RG35P-4DK.7ML.1L Art.-Nr.110653
Gefran-2019 F065386 MX2-6-M-B01C-1-4-D-4 2130X000X00
INTERNATIONAL LIGHT TECHNOLOGIES SSL001 (for ILT1400)
SCHNEIDER BMH0701P02A2A
B&PLUS RS16TB-211P-S04
MD MICRODETECTORS FARP/BP-0E
CASAPPA 06874990 FP30.43S0-33S3-LGE/GE-N
LEGRAND NO.044222
Gefran-2019 F000476 2308-1-R0-0
SCHMERSAL 101030511 TESZ/S/30
SCHNEIDER A9W35263
KOBOLD PSR11153R15R1
RIEGLER 29.300-MJ
STEMMER LEUCHTE CCS LDL2-74/30-SW-M12
Gefran-2019 F032784 MX0-6-M-B01C-1-4-0-4 2130X000X00
ALRE THV/150
Helios Art.Nr03060013
HEIDENHAIN 667596-01
Flowserve D3ENU-S23PVA-Z5X
BRECOFLEX SM5
CASAPPA 03742022 FRONT SECTION HDP30.27D0-04S3-LMC/MB-97N6-N-A
SCHNEIDER BMH1902P32F2A
harting 9990000377
UNIVER RP4010630020
WELKER IRA3070
STEUTE ST 14 2? - 2m
RELECO C12-G22FX/DC24V R ..
BARTEC 07-3323-1200 防爆開關(guān)觸點(diǎn)
Eaton Moeller 279161 FAZ-PN-C25/1N
RIEGLER 871.012-16 ES
OMRON E52-ETK6-100-2-B
CASAPPA 68301061 PLP30.34-04S5/30.22 D
MD MICRODETECTORS MDI58B 551
woertz接線端子30842E
RECHNER 801020 KAS-80-A13-A-K-PTFE-Y3
BANNER MQDEC2-404
Eaton Moeller 158359 NWS-S/19/09
BANNER SE612LVAG-55444
fede FD-L150T-C1P1C
Eaton Moeller 236580 PXL-B3/4
Eaton Moeller 114581 XVTL-MP/BX/IC-4/4/20
DELTA DE0251 SM 70-22
Gefran-2019 F060789 TC1-B-1-K-5-A-E-B-1 030X000X00300XX
BERNSEIN 6088187028
RIEGLER 12.EM.63030
WIEN-ARMATUREN TYPE:PRA-06-S(N.C)
METREL TL410
SCHNEIDER GS1AH110
UNIVER OV2000400020
SIKO DAO2-0401 53106-100-2-E-02
OMRON A22NK-3MR-01CA-G201
PARKER 10646-16-16/491-16/13946-16-16 L=1330
PILZ NO:751330 自動(dòng)控制器
DOLD安全繼電器27662 AA7616.24 AC50/60HZ120V 0,15S-1000S
MAGNETROL XB40-1B60-FNB
SCHUNK DPG-plus 125-1-AS ID:0304343
sauter controlls DSB146F001
HEIDENHAIN ERN1381.062-2048 ID: 385489-08
SCHNEIDER A9L16567
SCHNEIDER A9N26946
UNIVER K2010800025M
SCHNEIDER XU8M18MB230K
TAISEI Z-BP08100-40UW-DK-L NO.3P58
CORONA CALIF CIRCLE SEAL 533B-2MP-5
DOLD安全繼電器56185 IP3078.18 DC110V
BANNER T30GRYP W/30
小強(qiáng)工控 CARLO GAVAZZI ICB18S30F08PCM1
MD MICRODETECTORS MDI63A 682
MD墨迪 FAIC/BP-3A90° Retroreflective 4 m PNP Q/QN bl. cable 2m axial
OMRON CJ2M-KIT-MD-CXONE
SCHNEIDER NSYRSW631
Gefran-2019 F040773 KE3-6-M-B01C-1-0-L-S 2130X000X00
MOOG 4D01-3108-0601-B1-GOQ
SCHNEIDER LC1DT60A3JD
SCHNEIDER ZBY02213
SCHNEIDER ZB5AA71113
TEKAWE 2.85 54 31.1 流量傳感器
英國ONDRIVES變速箱和減速器PFN40-12
BANNER SMB12FAM10
LEUZE 50117736 KF-ETH-38H-20
FANDIS A12B12HTSW00廠家進(jìn)口
同正負(fù)環(huán)室結(jié)合處泄漏有關(guān)。無法用旋緊螺栓的方法消除泄漏,于是拆下節(jié)流裝置更換密封墊片,然后發(fā)現(xiàn)孔板變形。同天氣有關(guān)??装辶髁髁坑?jì)節(jié)流裝置本來無泄漏現(xiàn)象,由于天氣暴冷,西北風(fēng)勁吹,引起正負(fù)環(huán)室結(jié)合處泄漏。同節(jié)流裝置處絕熱保溫不佳有關(guān)。保溫良好的節(jié)流裝置未出現(xiàn)泄漏現(xiàn)象。將上述相關(guān)線索聯(lián)系起來可對(duì)孔板變形原因作出推理分析。節(jié)流裝置設(shè)計(jì)計(jì)算時(shí),孔板外徑與環(huán)室配合處的間隙留得足夠大是假定孔板和環(huán)室溫度相同,但實(shí)際上不可能相同,孔板被環(huán)室包圍著,而且有高溫流體為其提供熱量,所以溫度高,得到充分膨脹。
CASAPPA 02004713 PLP20.8S0-31S1-LOC/OC-N-EL FS
MD MICRODETECTORS MDI38G 244
SCHNEIDER VDI4393
KRAL Pump Kral Mod KF 160 ACA bare shaft
B+R 8LSA35.DB030S000-3
OMRON A22NK-3BM-01DA-G101
IPF IB080170
SCHNEIDER 9421LS13
SCHNEIDER LC1DWK12M5
UNIVER K2000630030M
CASAPPA 06882150 FP40109D0-19T1-LGG/GF-78A2-N-A
LEUZE 547821 AC-MSI-TCS
DOLD安全繼電器44666 IK7825.82 AC50HZ 230V 3-60M
DOLD安全繼電器60552 BA9053/113 AC0,5-5A AC110V
SUCO G05A-C-9-417 24V 05
JAQUET DSF1410.02AHV L=140
小強(qiáng)工控 CARLO GAVAZZI RM1E48V50
英國ONDRIVES變速箱和減速器E15-3AR-LH
COMPACT B118X2 3/11
OMRON NYP17-21281-15WC1000
MD MICRODETECTORS MDI63D 1416
RIEGLER 576/6
CASAPPA 68603690 PLP30.51-84E4/20.8 S/FS-L
EDRIVE HD302S p_32235
OMRON A22NL-RMM-TRA-G202-RE
DUPONT 806CD070505
CASAPPA 020146DS PLP20.25D0-82E2-LOD/OC-N-EL FS
ATEK T80 2/250
DOLD安全繼電器64290 BH7925.21/003 AC/DC24V+AC230V 150ms
Mankenberg DM462 4" * 10TX 80U-2,5GV(Ra <= 0.4 μm)
小強(qiáng)工控 CARLO GAVAZZI PS21S-PT1109-Y00
SCHNEIDER 140CRP93200C
BECKHOFF C9900-E651
DOLD安全繼電器62393 BH7925.21 AC/DC24V+AC230V 3-30S
Euchner CES-A-AEA-04B NR:072000
CASAPPA 03772558 DIVIDER HDD30.61-MD+C3030-MD+34-MB+34-MB-N
UNIVER K2000500090
Gefran-2019 F052164 600-R-T-C-E-1
UNIVER M1010250135M
MD MICRODETECTORS MDI38G 492
SCHNEIDER NSYVDAC47U86
ace MC4525M-3
小強(qiáng)工控 CARLO GAVAZZI CTD3X505AXXX
VIVOIL齒輪泵X2P5302EPOA
Eaton Moeller 260775
Gefran-2019 F049265 PK-M-0500 L000X000X00
BANNER LEDUV395LA580XD6-PHQ
SCHNEIDER A9F88432
RELECO C7-A20/DC220V R .
SCHNEIDER LC2D32BDV
RELECO C5-A20X/AC230V R .
Vogel 254828
BECKHOFF C9900-C611
Turck BIM-IKT-AD4X-H1141 感應(yīng)傳感器
UNIVER R12063090
RIEGLER SP 245-118
MD MICRODETECTORS MDI63A 2208
Eaton Moeller 159890 PIFT1H431C251CCAE
BANNER Q25SN6FF25
PARKER 12M-C12L-75-BN-B
BERNSTEIN 1015173000 CS-2000 SL 45/60 - Giunto ad innesto RAL7035
Eaton Moeller 205542 ZFS73-T0
Eaton Moeller 265225
Solartron測(cè)量探頭973033-3 DM 0.5S
MD MICRODETECTORS MDI58G 2856
LEUZE 50080537 ARH 10
MD MICRODETECTORS MDI38G 53
SCHMERSAL 103009118 NDLP30GR/GN
RIEGLER 13.DM.12035
OMRON J7KNG-22-10 110D
HPI "HCP 11510062118
P1 CBN 1006 CW 20 C01 N
A5090813+A, A5089712
rechtsdrehend, vg = 6,1 ccm/U
max p1 = 150 bar, Zentrierung 35mm
zyl. Welle d = 10 mm, mit integr.
DBV, ?ffnungsdruck 5 bar"
UNIVER RM4001000180
BANNER WLS28XW570X
JUMO 603021/70-1-052-00-0-00-20-13-20-150-8-6/000
Vahle 154438
OMRON E3FC-LN21
Burster Praezisionsmesstechnik GmbH & Co KG 9900-V172
SELET傳感器B04EG6,56NC
KOBOLD KSK-1500GK32S0\0-300T/H
LEGRAND 649950
E+H FMU30-AAHEABGHFRA
UNIVER J16A550250A
RIEGLER VT 15244
SCHNEIDER A9P54706
maxon motor 41.022.022-00.00-902
Eaton Moeller 129020 OPTN12FR4
SCHNEIDER NSYSTMP22120
小強(qiáng)工控 CARLO GAVAZZI SHRE1A424
OMRON NY512-1400-1XX213K2X
BECKHOFF ZK7206-AG00-A005
HAINBUCH SK 32 BZIG 23,55 工件夾具
Gefran-2019 F030872 GFX-S2-R/0-0-0-00-P-IM
RIEGLER FU 636-2
UNIVER M1000200015M
FINDER繼電器553490800040
AECO FTQ000155 FTQSP-R-R TD1' H
BANNER R55ECW2Q
SCHNEIDER BRS39BWS0135
BARKSDALE UPA5-1602-1-1 Art.Nr.: 0434-012
OMRON ZG-RPD41-N
小強(qiáng)工控 CARLO GAVAZZI PS31L-NO11RH-T00
LORENZ K-12 2KN
SCHNEIDER NSYPLAT12103G
EATON NZM1-XU 110-130V AC
FRIEDRICH FE 1300-6-7.0 EEx el\3kW
MD MICRODETECTORS MDI63A 1728
SCHNEIDER XUY92CG41R520
BANNER LEDRPFK70
CASAPPA 03598815 FRONT SECTION PLP30.38S0-04S5-LGF/GF-N-A
Gefran-2019 F043223 TC5-V-2-J-3-Q-J-P-3 100X000X00010XX
CASAPPA 06876144 FP30.61S0-A3Z0-LGF/GF-N
DOLD安全繼電器26569 AD8851.13 DC110V
FINDER繼電器7P2694200020
Gefran-2019 F070521 GSFSMS2300HC1 0000X00
Rexroth TYP:FR5 MNR 5351320210
PROXITRON OKB2047.18G
Eaton Moeller 3-6WFDNF160
FINDER繼電器406170054000
MD MICRODETECTORS MDI63D 27
COEL ITEM K91N006PS5NNASD001 N.160611 PF0.73 RPM910 TYPE FK90LB6
UNIVER HGC101014
BACO 30mm-200mm(GB25688.2)
SCHNEIDER CAD32R7
IFM EVM018 5573893491
UNIVER RT1230320150
SCHMERSAL 103001824 EX-T1K 335-20Z-3G/D
R+W MK2 20/44 8/7.5
ILME ILCGV 10.16
MD MICRODETECTORS MDI63G 2470
Gefran-2019 F023802 TR1-A-3-B-5-A-I 020X000G00100XX
HYDAC HC330DL20B1.0
SCHNEIDER ZB5AW0G334
CASAPPA 03579188 KP30.51D0-05S3-POG/OF-N
Gefran-2019 F043687 40T96-4-24-RRRR-020
OMRON A16ZA-5060
BANNER SLPE14-1250AP8
Pujol 4197506 LWBC 50 80 140*11 25
CASAPPA 02003603 PLP20.14D0-03S1-LOD/OC-N-FS
DUNKERMOTOREN DR 62.0x40-2 SNR88180.03051+PLG52 SNR88851.01760
Bender PGH474 B95018012
Stromag AG 85-HGE-890-FV70-A2R
hastings UNIVERSAL COTTER KEY PUSHER
BANNER DX99N9X1S2N0V2X0D1
Eaton Moeller 190914 FAZ-B35/4-NA
OMRON E3ZM-D67
SCHNEIDER A9P54602
SCHNEIDER LV540552
UNIVER K2000320090FM
FANDIS A12B12HTSW00廠家進(jìn)口
何為動(dòng)態(tài)空氣消毒機(jī)呢?其實(shí)很簡(jiǎn)單的說:就是食品安全體系中一個(gè)微小的防護(hù)環(huán)節(jié),目的為避免食品在加工過程中遭受空氣中細(xì)菌二次污染,其大優(yōu)點(diǎn)就是有人情況下持續(xù)動(dòng)態(tài)消毒殺菌,對(duì)人體無任何影響,克服臭氧、紫外線等原殺菌措施不能在有人情況下使用弊端,從而達(dá)到降低食品被污染的概率,間接達(dá)到延長食品保質(zhì)期的目的。食品行業(yè)向來是以高濕度、高異味,高粉塵著稱,基層從業(yè)人員的素質(zhì)較低,這樣就意味著食品業(yè)主對(duì)所采購的消毒設(shè)備的要求極高,在采購的時(shí)候好到廠家實(shí)地考察,并根據(jù)自身的具體特點(diǎn)(如飲料、焙烤、粉類食品等),提出自身要求讓廠家提供個(gè)性解決方案。
OMRON A22NL-RMA-TWA-G100-WC
GEBR. STEIMEL GmbH & Co. TFL8-140RDG-VLFM Fr:000.001.155.121 Ar:04 3827-4
R+W BK6-150-97-25.4-32
SP PINR147322
DI-SORIC IR 50 PSOK-IBS
UNIVER KL2001250960M
Kukla Waagenfabrik GmbH & Co KG D-DW-1
FINDER繼電器405190122303
LEUZE 50120191 CML720i-R20-2230.R/CV-M12
BECKHOFF CX2030-0100
Eaton Moeller 184810 XSDMC06135-ARC
Gefran-2019 F013816 TC6-A-1-J-C-C-J 000X000X00100XX
ipr fm80-v-4/43-nr
SCHNEIDER ZB6DV8
Gefran-2019 F067801 GFW-1PH-250-600-0-0-3-0-1-1-0
binks 0115-010102
Gefran-2019 F062740 GTF-25-480-2-0-0-0 4-B-M
KUEBLER 8.5020.D554.1024
SCHNEIDER LV847316
NITON XL2800
BANNER MAK7216NIX485Q
Beckhoff C9900-S351
Gefran-2019 F046019 TPSA-N-4-E-B01C-T-V 2130X000X00
SELET傳感器B03EN128NC
SELET傳感器OCV81/BPSC4
OMRON E2E-X2MF1 2M
SIEBERT S302-F3/06/0R-101/0A-YR
AE311002 DL2D3122065/FL-OS FG6667
JUMO 902810/20-1001-2-6-50-613-24/330
SELET傳感器OCV81/BAC3NCM
UNIVER S1004160320M
LEUZE 50119427 CML720i-T20-790.A-M12
HBM 1-AE101
OMRON A22NK-3BR-01CA-G210
FINDER繼電器224400124610PAS
英國ONDRIVES變速箱和減速器UPSG1.5-98PH-K
SCHNEIDER XACA2034
etronik HC510-OC-230-16-I
SCHNEIDER GV2DM221B7
BANSBACH氣彈簧D0B1-25-360-825-001 1030N
SCHNEIDER NSYTRAB1040
Eaton Moeller 170M6750
OMRON S8VK-C48024
OMRON CIMR-LC4F0015BAC
OMRON ZW-S8020 2M
Destaco 721E25161-1
FEAS Artikel-Nr.:5861249
CUD00004 DM3305741-01/16-G KA24-EE43
RECHNER KA1322
BAUMULLER BM4435-SI1-01500-00B00M20-S01-03 Ser.Nr:315023184
ATOS BA-509
BURKERT 2000A25.0 PIFE RG DN25 00007225
OMRON A22NS-2RM-NYA-G102-NN
Rexroth R900710530 4WRAE 10 W60-2X/G24K31/F1V 油壓傳動(dòng)閥
RIEGLER KB-N-036300
A. Kirchner & Tochter GmbH RA65(01234-001-06)Pmax10bar with MSK-wechsler(50vac/75vdc 0.5a 5w/VA)a 110vac/200VDC
STAUFF SPG100-00160-01-P-B08-F 0-2300psi 0-1
CASAPPA 03701126 HDP30.22S1-04S3-LMC/MB-N
MD MICRODETECTORS MDI63F 485
SIEMENS 6DR2100-5
PILZ PONZ po3.3p 3n/o
DOLD安全繼電器35915 AI 898 DC12V 22K UH AC45-400HZ 230V
ELCIS YZ63-1000-824-BZ-B-CM-R
OMRON XW2Z-R300C-SIM-D
Eaton Moeller 12OHFMA90 12KV 90AMP 2.5" OIL SEAL FUSE
英國ONDRIVES變速箱和減速器MJT-95-WH
MIKRON M7000SR/FF-EXP
OMRON A22NN-BPA-NWA-G101-NN
ALRE JTU-3
FAMATEC 80.010.127 工件夾具
UNIVER J67RS330250A
DOLD安全繼電器34874 BA7632.014 AC50/60HZ 230V
BANNER TL50BLB1W1R1Q
Beta Utensili 3620030
ILME ILCAV 24 LG29
CASAPPA FP30.27S0-19T1-LGE/GE-N
Eaton Moeller 278619 FAZ-Z1,6/1
Eaton Moeller 72320 Q18S3R-A6
UNIVER KD2000500215M
ATOS DHZO-TE-071-L5
OMRON A22NZ-3BR-NAA
Cavotec N132ML6\5.5kW\380V
DOLD安全繼電器23531 EC9621.81/110 AC50/60HZ 230V 99,99S
OMRON LY4I4N 230VAC
PCH1270 CHF5210 傳感器
GE SERIES-5
datalogic 950201220 S6R-5-M25-P BACK SUPPR DC M12 NO-NC
Gefran-2019 F056856 TCM-CP-1-K-5-A-0-T-B 100X000X00000XA
MAXONMOTOR124332
Eaton Moeller 193170 EWK-G46/31
SCHNEIDER XCSTA591L001
SELET UKS18-2100P20SCC5
OMRON XS2F-D421-DD0-TR
SIEMENS 6DD1607 0CA1 總線模塊
Swagelok R02012 SS-TH6PM4PH4-20 D95JS0049B
LEUZE 50139704 LE25C/4X-200-M8
JOMESA FR60*60mm載物片JOMESA 濾膜載物片,1盒=20 片
FINDER繼電器601381202040
MBS換熱器 MLI 139 12 1500
perma-tec GmbH & Co. KG 26004001 電纜
BECKHOFF C9900-M569
RIEGLER SP 16-300SSD
ATOS E-ME-AC-01F 20/2 油壓傳動(dòng)閥
KOBOLD OV2153G 4NC.30R
BECKHOFF C9900-D118
kendrion 111E00-0024
FINDER繼電器127182300000
DOLD安全繼電器22122 MK8804.13 AC/DC110V
00048171 BURKERT Elettrovalvola;0290-A-25,0-BB-MS-GM86-024/50-16 *;
SCHNEIDER HMIZSCLP3
EA MA30-ED85
TANDEM 830 63AP7060/4
SCHNEIDER GV4PEM80N
CASAPPA PLP20.16-54B5-LBE/BC/20.16-LBE/BC S/FS EL
HOERBIGER SAM220PC06B B1
BANNER LEDWLA580XG6-XQ
LEUZE 50120082 CML720i-R10-1120.R/L-M12
PS14100進(jìn)口電磁閥UNIVER
ATOS JPQ-312 油壓傳動(dòng)閥
SCHNEIDER ZB4BG08K1221E
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OMRON D4GS-N2T
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另外值得注意的是酮、酯、醚對(duì)多種橡膠有溶解性,在選擇密封材料時(shí)避免出錯(cuò)。建議選擇無機(jī)封的氟塑料磁力泵還有許多其它介質(zhì)不能在此一一介紹,總之在選材時(shí)切不可隨意和盲目,應(yīng)多查閱相關(guān)資料或借鑒成熟經(jīng)驗(yàn)。密封問題無泄漏是化工設(shè)備的永遠(yuǎn)追求,正是這種要求促成了磁力泵的應(yīng)用日益擴(kuò)展。然而真正做到無泄漏還有很長的路要走,比如磁力泵隔離套的壽命問題、材料的孔蝕問題、靜密封的可靠性問題等等?,F(xiàn)就密封方面的一些基本情況簡(jiǎn)單介紹如下:1.密封形式:對(duì)于靜密封來說,通常只有密封墊和密封圈兩種形式,而密封圈又以O(shè)型圈應(yīng)用廣;對(duì)于動(dòng)密封,化工泵很少采用填料密封,以機(jī)械密封為主,機(jī)械密封又有單端面和雙端面、平衡型和非平衡型之分,平衡型適用于高壓介質(zhì)的密封(通常指壓力大于1.MP,雙端面機(jī)封主要用于高溫、易結(jié)晶、有粘度、含顆粒以及有毒揮發(fā)的介質(zhì),雙端面機(jī)封應(yīng)向密封腔中注入隔離液,其壓力一般高于介質(zhì)壓力.7~.1MPa。密封材料:化工磁力泵靜密封的材料一般采用氟橡膠,特殊情況才采用聚四氟材料;機(jī)械密封動(dòng)靜環(huán)的材料配置較為關(guān)鍵,并不是硬質(zhì)合金對(duì)硬質(zhì)合金就好,價(jià)格高是一方面,兩者沒有硬度差也并不合理,所以好根據(jù)介質(zhì)特點(diǎn)區(qū)別對(duì)待。(注:美國石油學(xué)會(huì)API61第八版對(duì)機(jī)械密封和管路系統(tǒng)的典型配置在附錄D中有比較詳盡的規(guī)定)粘度問題:介質(zhì)的粘度對(duì)泵的性能影響是很大的,當(dāng)粘度增加時(shí),泵的揚(yáng)程曲線下降,佳工況的揚(yáng)程和流量均隨之下降,而功率則隨之上升,因而效率降低。