DS Type – Triplex Plunger Pumps

Destination:

The triplex pump are single-acting pumps with "V" toothed cylindrical gear, bilt especialy for operating conditions of cementing units.

The pumps are designed to run on reduced revolutions providing proper filling of pump cylinders and more than 0,9 volumetric efficiency on natural suction without supercharging.

Contents:

Fluid end

Power end

Lubrication

Plunger lubrication

Frame

Equipments

Constructive characteristics:

The hydraulic part of pump may be equipped, as desired, with the following range of plungers Ø85, Ø90, Ø100, Ø115 and Ø125 mm, according with the maximum working pressure of cementing unit.
In hydraulic part of pump mechanical energy is converted to hydraulic energy at the required operating pressure.
The hydraulic body is independent for each cylinder and is fixed to the pump frame.
The discharge chambers at the 3 hydraulic bodies are united by discharge collector.
The suction chambers of the hydraulic bodies are united by a common collector, sealed against each chamber

The power end converts the rotating movement from the transmission into translation movement required by the plungers.
The power end is equipped with a “V” gear with different gear ratio.
The crankshaft is supported on two self-aligning radial bearings ans is provided internally with holes for crankpin lubrication.

The “V” toothed gear has the crowns fixed on crankshaft. Axial force developed in each crows pushes the crown towards the crankshaft shoulder and does not create additional stresses on the fixing screws.
The Connecting rods have both ends on feed bearings, the crankpin on two piece bimetallic bushing and crosshead on ball joint.

The Crosshead is cylindrical shapped and slides in a cast iron casing attached to the frame body.
The Transmission Mechanism lubrication system provides lubrication under pressure of the conecting rod bearings, crankshaft bearings and crosshead casings.
Oil under pressure is supplied by a gear pump witch is flanged on the plunger pump frame and is driven by its transmission shaft.
The other moving parts of the transmission mechanism such as gears, transmission shaft bearings are splash lubricated.
The triplex plunger pumps are driven by engine, by mechanical transmission. The transmission is provided with a gear box and a toothed cluch mounted between the motor and the gearbox and a toothed cluch mounted between the gearbox and the plunger pump.

See the following tables for tehnical performances with can be obtained with these pumps:

DS 40 Triplex Pump

CV 5-302 Speed	Drive motor r.p.m	Pump double stroke/min	Max. working pressure, bar		Theoretical output, l/min
			Plunger diameter, mm		Plunger diamenter, mm
			100	115	100	115
I	700	35,6	400	300	168	222
	900	45,8			216	285
	1100	56			264	349
	1250	63,6			300	396
II	700	65,1	220	170	306	405
	900	83,7			394	521
	1100	102,3			482	637
	1250	116,2			547	724
III	700	105,2	130	100	495	665
	900	135,2			637	842
	1100	165,3			779	1030
	1250	187,8			885	1170

DS 50 A Triplex Pump

CV 5-302 Speed	Drive motor r.p.m	Pump double stroke/min	Max. working pressure, bar			Theoretical output, l/min
			Plunger diameter, mm			Plunger diamenter, mm
			90	100	115	90	100	115
I	700	35,6	500	400	300	136	168	222
	900	45,8				175	216	285
	1100	56				214	264	349
	1250	63,6				243	300	396
II	700	65,1	275	220	170	248	306	405
	900	83,7				319	394	521
	1100	102,3				390	482	637
	1250	116,2				443	547	724
III	700	105,2	170	130	100	401	495	665
	900	135,2				516	637	842
	1100	165,3				631	779	1030
	1250	187,8				717	885	1170

DS 50 B Triplex Pump

CV 5-302 Speed	Drive motor r.p.m	Pump double stroke/ min	Max. working pressure, bar				Theoretical output, l/min
			Plunger diameter, mm				Plunger diamenter, mm
			90	100	115	125	90	100	115	125
I	700	35,6	500	400	300	250	255	300	400	470
	900	45,8
	1100	56
	1250	63,6
II	700	58	330	270	208	165	400	490	660	760
	900	74,.8
	1100	91,5
	1250	103,8
III	700	94,7	208	168	125	100	650	800	1050	1220
	900	121,7
	1100	148,7
	1250	169
IV	700	153	128	103	78	66	1044	1290	1705	2010
	900	196,7
	1100	240,4
	1250	273,2

DS 70 Triplex Pump

CV 12-350 speed	Drive motor r.p.m.	Pump double stroke/min	Max. working pressure, bar			Theoretical output, l/min
			Plungers diameter, mm			Plungers diameter, mm
			100	115	125	100	115	125
I	700	17,58	700	530	450	99	131	155
	900	22,61				128	169	200
	1100	27,63				156	206	244
	1250	31,4				177	235	277
II	700	23,94	525	400	330	135	179	211
	900	30,78				174	230	272
	1100	37,62				212	281	332
	1250	42,76				242	320	378
III	700	32,49	390	290	250	183	243	287
	900	41,77				236	312	369
	1100	51,05				288	382	451
	1250	58,01				328	434	512
IV	700	42,85	290	220	180	242	320	378
	900	55,09				311	412	486
	1100	67,33				380	503	595
	1250	76,52				432	572	676
V	700	57,36	220	160	140	324	429	509
	900	73,75				417	551	651
	1100	90,14				509	674	796
	1250	102,43				579	766	905
VI	700	78,11	160	120	100	441	584	690
	900	100,42				568	751	887
	1100	122,74				694	918	1084
	1250	139,48				788	1043	1232
VII	700	105,97	120	90	75	599	792	936
	900	136,25				770	1019	1204
	1100	166,53				941	1245	1471
	1250	189,24				1070	1415	1672
VIII	700	139,78	90	65	55	790	1045	1235
	900	179,71				1016	1344	1588
	1100	219,65				1242	1642	1940
	1250	249,60				1411	1866	2205
Output/stroke						5,65	7,47	8,83

DS 105 Triplex Pump

CV 12-351 speed	Drive motor r.p.m.	Pump double stroke/ min	Max. working pressure, bar				Theoretical output, l/min
			Plungers diameter, mm				Plungers diameter, mm
			85	100	115	125	85	100	115	125
I	700	17,58	1050	700	530	450	72	99	131	155
	900	22,61					92	128	169	200
	1100	27,63					113	156	206	244
	1250	31,4	1000				128	177	235	277
II	700	23,94	730	525	400	330	98	135	179	211
	900	30,78					126	174	230	272
	1100	37,62					154	212	281	332
	1250	42,76					174	242	320	378
III	700	32,49	530	390	290	250	132	183	243	287
	900	41,77					170	236	312	369
	1100	51,05					208	288	382	451
	1250	58,01					237	328	434	512
IV	700	42,85	400	290	220	180	175	242	320	378
	900	55,09					225	311	412	486
	1100	67,33					275	380	503	595
	1250	76,52					312	432	572	676
V	700	57,36	300	220	160	140	234	324	429	509
	900	73,75					301	417	551	651
	1100	90,14					368	509	674	796
	1250	102,43					418	579	766	905
VI	700	78,11	225	160	120	100	319	441	584	690
	900	100,42					410	568	751	887
	1100	122,74					501	694	918	1084
	1250	139,48					570	788	1043	1232
VII	700	105,97	160	120	90	75	433	599	792	936
	900	136,25					556	770	1019	1204
	1100	166,53					680	941	1245	1471
	1250	189,24					773	1070	1415	1672
VIII	700	139,78	125	90	65	55	571	790	1045	1235
	900	179,71					734	1016	1344	1588
	1100	219,65					897	1242	1642	1940
	1250	249,60					1020	1411	1866	2205
Output/stroke							4,08	5,65	7,47	8,83