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Rotary JointsSeries DQ
2
DQ - Rotary Joints
are suitable for thermal oil up to 400°C and for rotational speeds of up to 2000 min-1. These ap-plications can be found, for example, in coatingand laminating plants, in paper, non-woven andtextile calendars, in dryers and in rotary reactionvessels.
Chemical reactions in the form of carbonisationand cracking take place if hot thermal oil comesinto contact with atmospheric oxygen. The sealswill be damaged causing hot oil and oil vapoursto escape.
The internationally patented DQ system preventsthese effects thus offering unique advantages.Atmospheric oxygen is isolated from the hot oilby a barrier fluid. A cooling unit is used with theDQ and DQT series for cooling the barrier fluidusing the same heat transfer medium as in themain circuit. The DQL version does not require acooling unit since its temperature limit is 250°C.
The fifth DQ generation does not need a separatecooling unit. Instead, the existing oil lubricationcircuit of the production facility is used andconnected. This enables considerably higherspeeds. Due to the temperature limitation to250°C (482°F), series DQL does not require a cooling unit.
Advantages and Features
Much longer service life than other rotaryjoints.Longer machine availability and appropriatemaintenance schedules due to constant monitoring of the rotary joint function via the cooling unit.Significantly reduced risk of thermal oil andoil vapours escaping.The primary seal is pressure balanced andfree running. A seal protector disk providesprotection against coarse contamination.Further safety due to the externally loadedmechanical seal.The secondary seal is subject to low stressthanks to the cooled barrier fluid.
Insulation of the rotor protects the bearingsfrom high temperature and prevents energy loss.The function of the rotary joints is monitoredvia control elements on the cooling unit. Incase of leakage, it is possible to continue producing up to the next scheduled shut-down.
Additional Technical Design Details:
Housing parts of spheroidal graphite castiron, for applications from 350°C upward ofhigh-temperature steel.DN 25-40 with ball bearings; DN 50-150 withself-aligning tapered roller bearings in thearea of the cooling oil.Bearing lubrication in the DQL via high-temperature grease. Cooled oil is used in the DQ and DQT.A screw plug at cooling oil connections Q is provided with thread M 6 for attaching a sensor for monitoring the bearings. Connection to the rotary pressure system via K-flange and conical inner rings.Radial and axial housing connection withflanges to DIN 2633. Flanges to other standards, e.g. ANSI, are also available.Barrier fluid connections with internal thread to ISO 228.Prevention of rotation by means of anti-rotation forks which can be mounted through 8 x 45° positions.Static support in the rotor for a rotating inner pipe prevents wear in this point. We recommend to use a special distributionsystem for distributing cooling oil to severalrotary joints with one cooling unit.Please refer to our operating instructions that can be downloaded at www.maier-heidenheim.de for additional information and safety precautions. Please get in touch with the factory for a user nameand a password.
Rotary Joints Series DQ
Subject to technical alterations!
3
Application Data
* Speed depends on temperature – for more than 200 °C (392°F) contact us. Avoid the combination of maximum values The combination of the maximum values for speed of rotation and temperature is not permissible. If the first value reaches 100 %, the second value must not exceed 80 %. For DN 125, the following limit applies: Nmax = 430 rpm. Shorter re-lubrication intervals apply at temperatures higher than 220°C.
Ordering Instructions
Series
DesignNominal diameter DN mm
Additional device for cooling and lubrication
Medium
Temperature max °C
max °F
Pressure PN max barmax psi
Speed max min-1
DQL
1, B225...150
–
thermal oil
250200 (DN 50)
482
10145
55.000DN
DN 50_> 200°C:35.000*
DN
DQ
1, B225...200
KE, KEW
thermal oil
300
572
10145
100.000DN
DQT
1, B225...150
KE, KEW
thermal oil
350
662
10145
100.000DN
DQTX
1, B225...150
KE, KEW
thermal oil
400
752
13189
100.000DN
DQ5
1, B225...200
oil lubrication circuit provided
by customer
thermal oil
300
572
10145
130.000DN
DQExample T B 2 50 K –100
Series DQ
DQL up to 250°C / 482°F; for DN 50 up to 200°C / 392°FDQ, DQ5 up to 300°C / 572°FDQT up to 350°C / 662°FDQTX up to 400°C / 752°F
Nominal diameter DN in mm (=̂ dimension A)25, 32, 40, 50, 65, 80, 100, 125, 150, 200
K rotor connection for K – flange
–100 European standard>100 consecutive numbers for special designs,
numbering by factory
B design for rotating inner pipe with static seal between inlet and outlet
number of housing connections1 for one-way flow (only on request)2 for two-way flow
44
25
DQLB 225 K1110097
DQB 225 K1110081
DQTB 225 K1110091
32
DQLB 232 K1110172
DQB 232 K1110156
DQTB 232 K1110166
40
DQLB 240 K1110247
DQB 240 K1110231
DQTB 240 K1110241
25DN 20DN 20
7128015045
1207720
140G 1/2
10018310224101830
3252025
32DN 25DN 25
7628515050
1208225
140G 1/2
10518810224102430
3302025
38DN 32DN 32
8832517065
1409625
155G 1/2
12122812025102940
3832035
DQB2 DN 25-40
for two way flow of a mediumdesigned for rotating inner pipe
DQL
DN
TypeOrder no.TypeOrder no.TypeOrder no.
Ø AB2CEa F2Ø JØ K G7/h8M±3NOP±3Q (4x90°)QaQeRSTØ W G7/e8XZGBWeight (kg)
55
DQB2 DN 50-150
DQL
50
DQLB 250 K-1001110322-700
DQB 250 K-1001110306-100
DQTB 250 K-1001110316-100
65
DQLB 265 K-1001110397-100
DQB 265 K-1001110381-100
DQTB 265 K-1001110391-100
80
DQLB 280 K-1001110472-100
DQB 280 K-1001110456-100
DQTB 280 K-1001110466-100
100
DQLB 2100 K-1001110547-100
DQB 2100 K-1001110531-100
DQTB 2100 K-1001110541-100
125
DQLB 2125 K-1001110622-100
DQB 2125 K-1001110606-100
DQTB 2125 K-1001110616-100
150
DQLB 2150 K1110697
DQB 2150 K1110681
DQTB 2150 K1110691
50DN 40DN 4010140018685
1458330
170G 1/2
277124,511523103750
4602250
66DN 50DN 5011642520410517012535
180G 1/2
308,515413025104550
5002268
81DN 65DN 65119,5455234114180
131,540
205G 1/2
325164,515536,5156040
5352695
99DN 80DN 80134,5502265135195
146,545
225G 1/2
362179,517755157550
58730
130
119DN 100DN 100138,556031017023014950
280G 1/2
401189,520550158880
67630
208
146DN 125DN 125
15260035220426016050
315G 1/2
4102002325520
10590
72030
284
for two way flow of a mediumdesigned for rotating inner pipe
DN
TypeOrder no.TypeOrder no.TypeOrder no.
Ø AB2CEa F2Ø JØ K G7/h8M±3NOP±3Q (4x90°)QaQeRSTØ W G7/e8XZGBWeight (kg)
6
KE + KEW Cooling Unit
Rotary Joints of series DQ and DQT require a barrier fluid forcooling (we recommend to use the same heat transfer mediumas in the main circuit). The barrier fluid is conditioned by an external cooling unit. Type KE is equipped with an oil-to-airheat exchange, type KEW has an oil-to-water heat exchanger.For monitoring the rotary joints as well as the cooling and filtering function of the barrier fluid, monitoring elements are installed which transmit signals to a control unit providedby customer. In case of leakage at the rotary joint it is possibleto continue operating up to the next scheduled shut-down.
It is possible to have several rotary joints supplied by one cooling unit. In order to supply equally to each rotary joint the cooling unit is equipped with a cooling oil distributor in the inlet line.
Hot thermal oil flows through the rotary joint and is sealed by a mechanical seal (primary seal P). Ifthe hot thermal oil gets in contact with atmospheric oxygen in the sealing gap P, chemical reactions(carbonisation) would be the result leading to damages on sealing P and bearing L. Therefore a barrier fluid (second oil circuit) flows through the bearing and sealing area of the rotary joint in order to cool and lubricate these parts. In addition sealing P isisolated from atmospheric oxygen. The barrier fluid is isolated fromthe atmosphere by a second seal (secondary seal S) and processed by cooling unit KE / KEW. Specific insulationmeasures I support the effect of the barrier fluid.
This solution improves the wear resistance and operational reliability of the rotary joint significantly compa-red to conventional rotary joints.
Cooling Unit KE/KEW
Cooling Unit KE/KEW
7
min G15
min G15
min G20
a, b, c
a, b, c
a, b, cG 3/4
1110
430
470
595
In case of a malfunction, integrated monitoring devices fortemperature, flow rate, level min/max. and filter conditiontransmit an electric signal to the customer’s control. Wiringdone as far as to the terminal box. Installation without mainswitch, fuses, or control units.
Cooling Circuit for two or more Rotary Joints
Features of the Cooling Unit
For two or more rotary joints, the cooling oil cir-cuit has to be executed in accordance with the ac-companying diagram. A cooling oil distributor KVis recommended to compensate differences inlength and cross section of the line. They ensurean even oil supply V1 to the rotary joints andtransmit an electric signal to the control unitwhen the limit value is not reached.
Maximum line length is 25 m. Observe the mini-mum cross section of the line according to thediagram.
The maximum admissible head loss in the wholesystem is 5 bars (pump pressure P0) For further in-formation see our operating manual B-KE.
Size of pump l/minTypeOrder no.TypeOrder no.Nom. tank volume lMotor power 50 HzCirculating pump l/minCooling capacity* kWControl voltage 60 HzCirculating pump l/minCooling capacity* kW
See parts list page 8
Control voltage 24V or 220V. Design according 2006/42/CE. Standard color RAL 7032 pebble grey structured.
* at an air or water temperature of max. 30°C at the inlet.
8KE 28-34
1192058-034KEW 28-39
1192059-03935
0,37 kW; 380-420 V8
8 (KE) / 10 (KEW)0,44 kW; 440-480 V
9,68 (KE) / 10 (KEW)
16KE 28-16
1192058-016KEW 28-42
1192059-04235
0,75 kW; 380-420 V16
12,5 (KE) / 16,5 (KEW)0,9 kW; 440-480 V
19,212,5 (KE) / 16,5 (KEW)
28KE 28
1192058KEW 281192059
350,75 kW; 380-420 V
2815,5 (KE) / 20 (KEW)0,9 kW; 440-480 V
33,615,5 (KE) / 20 (KEW)
8
M1
M2
FS1
TS1
LS1A
LS1B
TS2
PS1
FA-
TA+
LA-
LA+
TS
FC
PDA+
KE3516157-0013516157-0013516157-0023631011-0033631017-0013631017-0013514092-0013514092-0023516156-0013513001-0013513001-0023513001-003
KEW3516157-0013516157-0013516157-0023631011-0033631017-0013631017-0013514092-0013514092-0023516153-1013513001-0013513001-0013513001-006
KE3516166
3636032-0043636031-0013636026-0013636030-0013636030-002
–3516171-0013636032-005
KEW3516166
–3636031-0013636026-0013636030-0013636030-0023516002-0033516171-0013636032-005
Features of the Cooling Unit
Please specify exact type designation of the cooling unit plus order no. when placing an inquiry or an order.
Spare Parts
1a Pump 8 l/min (2.1 gpm)1b Pump 16 l/min (4.2 gpm)1c Pump 28 l/min (7.4 gpm)2a El.motor for 1a2b El.motor for 1b2c El.motor for 1c3 Coupling for 1a, 1b 3 Coupling for 1c4 Heat exchanger5 Hose 16 Hose 27 Hose 3
8 Filter cartridge9 Temperature control
10 Level indicator11a Flow guard for 1a11b Flow guard for 1b11c Flow guard for 1c12 Cooling water contr. valve13 Ball valve14 Temperature control
Insulation cl. F, IP 55380-420 V/50 Hz/1400 rpm440-485 V/60 Hz/1680 rpm
0.18 kW insulation class F, IP 44380-420 V/ 0.31 A50 Hz/2600 rpm
IP 65, AC/DCmax. 250 V, max. 2 A, 60 W
IP 65, AC/DC, max 250 V12 V: max. 10 A24 V: max. 5 A
IP 65, AC/DC
max. 250 V, 55 W
IP 65, AC/DC, max. 250 V12 V: max. 10 A24 V: max. 5 A
non-electrical controller
IP 65, AC/DC, max. 250 V220 V: max. 5 A, 24 V: max. 8 A
3-phase motor for pumps
3-phase motor for air cooleronly with type KE
Flow guardflow rate reached = 1
Temperature guardOil temperature too high = 0
Level indicator minOil level too low = 0
Level indicator maxOil level too high = 0
Controller for oil/air cooleronly with type KE
Control valve for oil/waterheat exchangeronly with type KEW
Filter wear indicatorFilter change = 0
Type Type
9
z = 2 z = 3 z = 4 z = 5
KV 10-3 KV 10-4 KV 10-53516158-103 3516158-104 3516158-105
KV 20-23516158-202
152 380 380 38011 76 76 7611 15 15 15
Initial Data
Nomninal diameter of rotary joint DN mm
Thermal oil temperature T1 °C
Thermal oil pressure p1 bar
Speed n n–1
Number of rotary joints per unit z pieces
Calculation
Mechanical friction load per rotary jointPm = 0,105 *n* Mr/1000(Mr from fig. 1) = kW
Thermal capacity per rotary joint(Pt from fig. 2) = kW
Cooling capacity per rotary jointPv = Pm + Pt = kW
Required cooling capacityPke* � Z * Pv = kW
Required oil flow per unit:Q � 1,35 * Z * Pv = l/min
System Design Calculations
fig. 1
fig. 2
The size of the oil distributors must be adaptedto the pump capacity. The above oil distributorsare designed for a 28 liter pump.
Cooling Oil Distributor
Number of rotary joints zOil volume/rotary joint
V14-10 l/min
10-20 l/min
LAB
10
DN
253240506580100125150
DN
253240506580100125150
Ø A
25323850668198
120143
Ø AD
115120145165205220228250305
Ø LK
9095
115135170185195215260
AZ xØ DB4 x 114 x 114 x 144 x 14 4 x 186 x 188 x 188 x 188 x 22
Ø KD
48536989
109120144175205
Ø IDH8/h8
43486382
102110130165200
KB
151820253030303540
Ø KG7/h8
45506585
105114135170204
O
202525303540455050
EB
162022283432323845
Gasket for flange connections B2 and C (to DIN 2633)
Journal Flange Connectionwith O-Ring
For mounting rotary jointswithout alignment for high speeds we recommend to use O-rings for sealing.
Attention! Consider mediumand temperature when selecting the O-ring!
K-flange
KF 32-500KF 40-500KF 50-500KF 65-500KF 80-500KF 100-500KF 100-41KF 125-9KF 150-19
Order no.
1190434-5001190435-5001190436-5001190437-5001190438-5001190439-5001190439-0411190450-0091190451-019
Inner ring
IR 32-500IR 40-500IR 50-500IR 65-500IR 80-500
IR 100-500IR 100-10IR 125-6
IR 150-10
Order no.
1190404-5001190405-5001190406-5001190407-5001190408-5001190409-5001190409-0101190410-0061190411-010
GasketOrder no.35122343512235 3512236351223735122383512239119004511900261190047
Gasket for ConnectionB2, C
351226535122663512267351226835122693512270351227135122723512273
Journal Flanges for K Rotor Connection
K-flanges and Inner Rings – Material: carbon steel
Attention: DN = DN of rotary joint.
11
3030 a
4040 a
6080
80 a100102110
110-10110-20110-40110-50110-60
120130140150
150 a160170180190200
200 a220
251110102
1110102-0681110184-1451110184-150
11101191110115
1110115-0723511188-0111110202-1331110201-1413511404-0771110201-139
35116813511701-0013511696-0011110210-0923511781-001
11102061110139
1110139-0641110209
1110223-1541110212-066
35104823510135-0053510135-010
1110174
321110177-1201110177-1551110184-1451110184-150
11101941110190-1461110190-1573511188-0111110202-1331110201-1413511404-0771110201-139
35116813511701-0013511696-0011110210-0923511781-001
11102061110214-1231110214-152
11102091110223-1541110212-066
32104823510135-0053510135-010
1110174
401110252-0901110252-114
11102591110259-122
11102691110265
1110265-1163511190-0111110277-101
11102763511405-046
11102783511682
3511894-0013511708-0011110285-0863511782-0011110281-0571110289-0921110289-1191110295-123
111029811102873510532
3510206-0053510206-0101110282-058
251110208
1110208-1513501023350123935006963500886350089035133543500658
3500658-0633511871-0011110143-050
35120123502116-0013500053-0073500052-0073500085-007
35002753500084-007
3500275350030135003013500914
321110208
1110208-1513501023350069735006963500886350089035133543500658
3500658-0633511871-0011110143-050
35120123502116-0013500053-0073500052-0073500085-007
35002753500084-007
3500275350030135003013500914
401110283
1110283-082350102435012253500706
3500904-004350089035133543500658
3500658-0633511719-001
35120133212014
3502116-0013500128-0073500127-0073500123-007
35002323500123-007
3500232350030335003033500914
230230 a240260280290300320330332350360370380400410420420 a430430 a450460480
DNHousing DQB2 / DQLB2Housing DQTB2Bearing hous. DQ / DQTBearing housing DQLRotor bushingRotor K DQB2 / DQLB2Rotor K DQTB2Metal bellows primary sealCounter face primary sealSecundary seal compl.Counter face secondary sealCarbon sealing ring sec. sealCompression springO-Ring 1O-Ring 2CoverShaft seal DQLSupport diskElbow DQ / DQLElbow DQTDeflector sleeve DQTShaft sleeve DQLAnti-rotation forkSlide bushGrooved ball bearingGrooved ball bearing DQLSeal protector disk
Please specify exact designation when placing an inquiry or an order!
DNDistance ring DQ / DQTDistance ring DQLCirclip 1Circlip 2Retaining ringLocking pin 1Locking pin 2Reducer fitting DQ /DQTScrew plug 1Sensor plugO-RingGasket 1Gasket 2CU-seal 1Hexagon screw 1Hexagon screw 2Hex. screw 3 DQ / DQLStud bolt 1 DQTHex. screw 4 DQ / DQLStud bolt 2 DQTHexagon nut 1 DQTHexagon nut 2 DQTCon. grease nipple DQL
Spare parts for series DQ DN 25-40
12
3040
40 a6080
80 a100102110
110-10110-20110-40110-50110-60
120130140150160170180190200202204
204 a206
206 a220230240
240 a250260270280290300310320330332340350360370380390400410420
420 a
501110327-1351110334-1371110334-1511110344-0801110340-1381110340-1413511191-0111110352-119
11103513511406-043
11103533511683
3511871-0013511869-001
11103603511180-0011110356-144
11103641110348-1461110373-1451110362-083
351052335101423510045
1110358-1471110358-1481110359-1361110359-1521110357-149
35090603513513
1110324-1503500930350123235115253500870
3500909-0043500909-004
350094035006643500655
3500655-1583511701-0013511755-0011110444-062
35122813502115-001
35008733500137-0073500134-0073500123-007
3500257
651110402-1421110409-1411110409-145
11104191110415-1081110415-1593511192-0111110399-102
11104263511407-0491110399-092
35116853511716-0013511715-0011110435-144
35119531110431-1201110439-143
11104231110448-1341110437-115
35105393510044-2503510044-2501110433-1131110433-132
11104361110436-1351110432-065
35090763513512
1110399-1333500950350123635115583500874
3500909-0043500909-004
350094035006643500655
3500655-158 3511569-0013511839-001
35120181103449-2613502115-001
35009483500094-0073500092-0073500164-007
3500279
801110477-2091110484-2101110484-2241110494-1401110490-2141110490-2323511193-0111110502-198
11105013511408-0771110503-1118 x 35115533511873-0013511874-0011110510-212
35119721110506-2191110514-1381110522-2311110523-2221110512-220
35105133510027-2503510027-2501110508-2171110508-2251110509-2181110509-2261110507-180
35090753513508
1110474-223350103735012053511560350069335008903500922350094035006643500655
3500655-158 3511871-0013511758-0011110594-0701110519-1543502115-001
35006923500134-0073500128-0073500274-007
3500986
1001110552-1481110559-1351110559-1591110569-1091110565-1361110565-1663511194-0111110549-130
11105763511409-043
11105788 x 35115503511703-0013511702-0011110585-1453511178-0011110581-1501110589-0971110597-1491110598-1391110587-146
35105193510025-2503510021-2501110583-1441110583-1621110586-1431110586-1691110582-151
35090623513505
1110549-160350094935012513511558350105035009223500922350094035006643500655
3500655-158 3511776-0043511773-0011110669-063
35120183502115-001
35009473500137-0073500128-0073500271-0073500242-007
12511106271110634
1110634-1601110644
1110640-1321110640-1653511195-0111110652-113
11106513511410-043
11106538 x 35115513511725-0013511712-0011110660-1253511181-0011110656-059
11106641110648
1110673-1391110662-140
35104853510072-2503510072-2501110658-1361110658-162
11106611110661-1681110657-061
35090581110624-1371110624-137
350095935012073511587350070935009223500922350094035006643500655
3500655-158 3511780-0043511793-0011110668-084
35120203502115-001
35006993500137-0073500134-0073500271-0073500242-007
15011107021110709
1110709-14611107191110715
1110715-1713511196-0111110727-126
11107263511411-0411110728-1538 x 35115513511727-0043511726-004
11107353511165
1110731-05411107391110723111072911107373510491
3510024-2503510023-250
11107331110733-140
11107361110736
1110732-0561110738
1110699-1381110699-138
350095435012373511557350087135008963500922350094035006643500655
3500655-158 3511758-0013511759-0011110743-116
35122553502115-001
35008753500173-0073500164-0073500271-0073500242-007
DNHousing B2Bearing housing DQ / DQTBearing housing DQLRotor bushingRotor K DQB2 / DQLB2Rotor K DQTB2Metal bellows primary sealCounter face primary sealSecondary seal compl.Counter face secondary sealCarbon sealing ring sec. sealCompression springO-Ring 1O-Ring 2CoverShaft seal DQLSupport diskElbowDeflector sleeve DQTShaft sleeve DQLAnti-rotation forkSlide bushTapered roller bearing 1Tapered roller bearing 2Distance ring DQ,DQTDistance ring DQLSpacerSpacer DQLSeal protector diskNILOS ring DQLGrooved nut DQ / DQTGrooved nut DQLCirclip 1 DQLCirclip 2Compr.spring f. bearingsRetaining ringLocking pin 1Locking pin 2Locking pin 3Screw plug G1/8Screw plug G1/2Sensor plugO-ring DQLO-ring DQ / DQTGasket 1Gasket 2CU-seal Circlip DQTHexagon screw 1Hexagon screw 2Stud bolt or hexagon screwStud bolt 1 DQT
Spare parts for series DQ DN 50-150
13
430430 a
450450 a
460470480
503500123-007
3500257–
3500303350030335006683500914
653500123-007
3500257–
3500285-001350030335006683500914
803500165-0073500227-0073500285-0073500285-0013500285-001
35006683500914
1003500161-007
35002343500287-007
35003003500285-001
35006683500914
1253500166-007
35002343500287-007
35003003500285-001
35006683500914
1503500204-007
35002363500287-007
3500300350030035006683500914
DNHexagon screw 3Stud bolt 2 DQTHexagon nutHexagon nut DQTHexagon nut DQTEye screwConical grease nipple
Please specify exact designation when placing an inquiry or an order!
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Maier Rotary Joints (Kunshan) Co., Ltd
No. 329 Jujin Road, Jiangsu215321 Kunshan - P. R. China
+86 512 36853830+86 512 36853831
��
D 13414 e digital
Branch Offices & Service Stations:
Maier Italia Srl
Via Enrico Toti 3I-21040 Gerenzano (VA)
+ 39-02-96 24 82 88+ 39-02-96 36 96 95
Maier America LLC
6669 Peachtree Industrial Blvd., Suite L/MNorcross, GA 30092 - USA
+ 1-770-409 0022+ 1-770-409 0069
Christian Maier GmbH & Co. KGMaschinenfabrik
Wuerzburger Straße 67-69D-89520 Heidenheim
P.O.Box 1609D-89506 Heidenheim
+ 49 (0) 73 21 / 317-0+ 49 (0) 73 21 / 317-239+ 49 (0) 73 21 / 317-139 (Export)
