S-type double suction split double suction horizontal split centrifugal pump-End Suction Pump

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S-type double suction split double suction horizontal split centrifugal pump

Flow: 72-10800m³/h
Lift: 10-253m
Efficiency: 69%-90%
Pump weight: 110-25600kg
Motor power: 11-2240kw
NPSH: 1.79-10.3m

S-type double suction split double suction horizontal split centrifugal pump

Flow: 3.7-1350m³/h
Flow: 3.7-1350m³/h
Flow: 3.7-1350m³/h
Flow: 3.7-1350m³/h
Flow: 3.7-1350m³/h
Motor power: 3.7-1120kw

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Advantages Working conditions Product introduction Model meaning technical parameter Structural features

Product classification

Advantages

Working conditions

Product introduction

• Flow: 72-10800m ³/ h

• Lift: 10-253m

• Efficiency: 69% - 90%

• Pump weight: 110-25600kg

• Motor power: 11-2240kw

NPSH: 1.79-10.3m

Product Overview

The S-type double suction split pump is a single-stage, double suction horizontal split centrifugal clean water pump, which is suitable for industrial and urban water supply and drainage pumps. It can be used as a drainage or water supply pump for factories, cities, power stations, water conservancy projects, etc., and can also be used for farmland irrigation. "S" series pump is an efficient and energy-saving product with simple structure and excellent performance. It is used to transport clean water without solid particles or other liquids with physical and chemical properties similar to water. The temperature of the medium to be transported is 0 ℃~80 ℃, and the allowable inlet pressure is 0.6MPa.

performance parameter

Parameter range and model description of S-type horizontal single-stage double suction split centrifugal pump:

Flow Q 72~10800m3/h

Lift H 10~253m

Model: 200S95

200 - Discharge diameter

S-single-stage double suction horizontal split centrifugal pump

95 - Lift

Structural features of S-type horizontal single-stage double suction split centrifugal pump:

1-1

Compared with other pumps of the same type, the S-type horizontal double suction pump has the characteristics of long service life, high efficiency, reasonable structure, low operating cost, convenient installation and maintenance, etc. It is an ideal pump for fire protection, air conditioning, chemical industry, water treatment and other industries. The design pressure of the pump body is 1.6MPa and 2.OMPa.

The inlet and outlet flanges of the pump body are located at the lower pump body, so that the rotor can be taken out without dismantling the system pipeline. For easy maintenance, the pump body is designed with double channels to reduce the radial force, thus extending the service life of the mechanical seal and bearing. The hydraulic design of the impeller of the split pump adopts advanced CFD technology, so the hydraulic efficiency of S pump is improved. Balance the impeller to ensure the smooth operation of S pump. The shaft diameter is thicker and the bearing spacing is shorter, which reduces the deflection of the shaft and extends the service life of mechanical seals and bearings. The shaft sleeve can be made of various materials to prevent the shaft from corrosion and wear. The shaft sleeve can be replaced. Wearing ring The replaceable wearing ring is used between the pump body and the impeller to prevent the wear of the split pump body and the impeller. It is easy to replace and has low maintenance costs, while ensuring the operating clearance and high working efficiency. Both packing and mechanical seal can be used, and the sealing device can be replaced without removing the pump cover. The unique bearing body design of the bearing allows the bearing to be lubricated with grease or thin oil. The design life of the bearing is more than 100000 hours. Double row thrust bearing and enclosed bearing can also be used.

The suction inlet and discharge outlet of the S-type horizontal double suction centrifugal pump are below the pump axis and perpendicular to the axis in a horizontal direction. During maintenance, all parts can be removed by uncovering the pump cover, without dismantling the motor and pipeline.

The split pump is mainly composed of pump body, pump cover, shaft, impeller, sealing ring, shaft sleeve, bearing parts and sealing parts. The shaft is made of high-quality carbon structural steel, and other parts are basically made of cast iron. Impeller, seal ring and shaft sleeve are vulnerable parts.

Materials: according to the actual needs of users, the materials of S-type double suction centrifugal pump can be copper, cast iron, ductile iron, 316 stainless steel, 416; 7 Rust steel, two-way steel, Hastelloy, Monel alloy, titanium alloy and No. 20 alloy.

Rotation direction: looking from the motor end to the pump, the "S" series pump rotates counterclockwise. At this time, the suction port is on the left and the discharge port is on the right. The pump rotates clockwise. At this time, the suction port is on the right and the discharge port is on the left.

Scope of complete set: complete set of pumps, motors, soleplates, couplings, inlet and outlet short pipes, etc.

参数型号	流量 Q		扬程 H	转速 n	轴功率 Pa	配带电动机		效率 η	必须汽蚀余量	叶轮名义直径	进出口径	泵重
	流量 Q		扬程 H	转速 n	轴功率 Pa	功率	型号	效率 η	必须汽蚀余量	叶轮名义直径	进出口径	泵重
	m3/s	L/s	m	r/min	kw	kw	型号	%	m	mm	mm	kg
3×7SA	58 88 108	16.1 24.4 30	39.5 33 26	2980	9.17 10.7 11.2	15	Y160M2-2	68 74 68	0.5 4 12.6	184	100 80	127
3×7SA	47 72 93	13.05 20 25.8	28 23 16.5	2980	5.7 6.5 6.6	11	Y160M1-2	63 69 63	0.8 0.6	159	100 80	127
3×7SA	47 58 70	13 16 19.4	17 15 12	2980	3.75 4 3.9	5.5	Y132S1-2	58 59 58	0.5 0.7	134	100 80	127
3×9SB	100 135 167	27.7 37.5 46.3	60.8 56 44.8	2980	22 26 27	30	Y200L1-2	75 79 75	3.6 4.8 6.3	225	125 80	143
3×9SB	81 117 145	225 32.5 40.2	45 40 33	2980	14 16.7 18.6	22	Y180M-2	70 76 70	3 4 5.2	197	125 80	143
3×9SB	73 100 128	20.3 27.7 35.5	32.5 28 22	2980	9.94 11 11.8	15	Y160M2-2	65 69 65	3.6 4.4	165	125 80	143
4×9SB	147 200 236	40.8 55.5 65.5	58 51 41	2980	30.95 34.6 35.1	45	Y200L2-2	75 80.3 75	3.2 6.6 12.6	223	150 100	170
4×9SB	132 184 220	36.6 51.1 61.1	49 42 34.5	2980	23.5 26.3 27.5	37	Y200L2-2	75 80 75	5.6 9.6	210	150 100	170
4×9SB	26 168 198	35 46.6 55	43 37 29	2980	19.7 21.1 20.8	30	Y200L1-2	75 80 75	4.4 6.6	198	150 100	170
4×9SB	100 152 180	27.7 42.2 50	38.6 31.6 25.2	2980	15 16.6 16.5	22	Y180M-2	70 78.5 75	3.5 5.4	186	150 100	170
5×9SB	200 281 360	55.5 78 100	59.6 55 42	2980	43.3 51.96 54.9	75	Y280M-2	75 81 75	6 8.6 13.8	23	200 125	261
5×9SB	200 250 315	55.5 69.4 87.5	48 43.5 32	2980	34.8 37 37.86	45	Y225M-2	75 80 72.5	6 7.2 10.2	210	200 125	261
5×9SB	162 230 280	45 63.8 77.7	42 37 28.5	2980	26.4 30 30	37	Y200L2-2	70 77 72.5	5.2 6.6 8.4	197	200 125	261

参数型号	流量 Q		扬程 H	转速 n	轴功率 Pa	配带电动机		效率 η	必须汽蚀余量	叶轮名义直径	进出口径	泵重
	流量 Q		扬程 H	转速 n	轴功率 Pa	功率	型号	效率 η	必须汽蚀余量	叶轮名义直径	进出口径	泵重
	m3/s	L/s	m	r/min	kw	kw	型号	%	m	mm	mm	kg
5×9SB	135 180 210	37.5 50 58.3	29 244.8 20	2980	17.7 17.87 17	22	Y180M-2	60 68 67.5	5.4 6.1	163	200 125	261
4×11SC	140 220 272	38.8 61.1 75.5	88 76 64	2980	48 58 63.2	75	Y280S-2	70 78.5 75	3.6 6.5 11.8	270	150 100	227
4×11SC	13 204 247	36.1 56.6 68.6	74 63 52.3	2980	37.4 45.1 46.9	55	Y250M-2	70 77.5 75	3.4 5.6 8.8	248	150 100	227
4×11SC	126 180 230	35 50 63.8	58 50 37.4	2980	28.4 32.5 33.5	45	Y225M-2	70 75.5 70	3.3 4.7	229	150 100	227
4×11SC	104 160 204	28.8 44.4 56.6	46 40 32	2980	20 24 25.4	30	Y200L1-2	65 72.5 70	4 5.6	203	150 100	227
3×14D	60 85 100	16.6 23.6 27.7	36.2 34 29.3	1480	9.1 11.4 12.3	15	Y160L-4	65 69 65	1.8 2.5 3.8	346	125 80	181
3×14D	45 75 90	12.5 20.8 25	31.6 26 19.6	1480	6.45 7.92 8	11	Y160M-4	60 67 60	2.2 3.8	318	125 80	181
3×14D	39 60 75	10.8 16.8 20.8	25.2 22 17.2	1480	4.7 5.75 5.95	7.5	Y132M-4	56.5 62.5 59	1.8 2.2	286	125 80	181
3×14D	38 50 68	10.5 13.8 18.8	19 17 11.2	1480	3.57 4.02 3.77	5.5	Y132S-4	55 57.5 55	1.6 2	254	125 80	181
4×14SD	110 149 172	30.50 41.10 47.70	37.8 33 29	1480	16.17 18 18.86	22	Y180L-4	70 74 72	1.8 3 4.8	342	150 100	254
4×14SD	100 130 156	27.7 36.1 43.3	29.3 25.6 21	1480	11.73 12.76 13.12	15	Y160L-4	68 71 68	1.6 2.4 3.6	318	150 100	254
4×14SD	68 100 136	18.8 27.7 37.7	23.2 20 14	1480	7 8.25 8.64	11	Y160M-4	61 66 60	1.6 2.6	280	150 100	254
4×14SD	62 90 106	17.2 25 29.4	15 12.2 10	1480	4.6 4.86 4.8	7.5	Y132M-4	55 61.5 60	1.4 1.7	223	150 100	254

参数型号	流量 Q		扬程 H	转速 n	轴功率 Pa	配带电动机		效率 η	必须汽蚀余量	叶轮名义直径	进出口径	泵重
	流量 Q		扬程 H	转速 n	轴功率 Pa	功率	型号	效率 η	必须汽蚀余量	叶轮名义直径	进出口径	泵重
	m3/s	L/s	m	r/min	kw	kw	型号	%	m	mm	mm	kg
4×14SDL	138 200 228	38.3 55.5 63.3	38.6 35 33	1480	19.34 23.8 26.6	30	Y200L-4	75 80 77	1.8 4.2 6.1	356	150 100	286
4×14SDL	120 185 224	33.3 51.3 62.2	34 30 25.5	1480	14.8 18.6 20.74	30	Y200L-4	75 81 75	1.4 3.4 5.6	330	150 100	286
4×14SDL	120 168 198	33.3 46.6 55	25.5 24.6 21.5	1480	11.1 14 15.45	18.5	Y180M-4	75 80 75	1.4 2.5 4	305	150 100	286
4×14SDL	106 150 176	29.4 41.6 48.8	24 21.5 18	1480	8.89 11.7 11.9	15	Y160L-4	70 75 72.5	1.2 2 3	279	150 100	286
5×11SC	128 163 200	35.5 45.3 55.5	23.6 22 15.4	1480	10.3 11.6 10.48	15	Y160L-4	80 84 80	1.9 2.7 5.5	279	200 125	259
5×11SC	110 150 175	30.5 41.6 48.6	19 15.8 13	1480	7.4 7.9 7.94	11	Y160M-4	77 81.5 78	1.8 2.2 3.4	54	200 125	259
5×11SC	80 130 145	22.2 36.1 40.2	14.6 12 10.2	1480	4.54 5.51 5.3	7.5	Y132M-4	70 77 76	2.2 2.1	224	200 125	259
6×11SC	170 248 296	47.2 68.8 82.2	24 20 17.6	1480	14.6 16.4 17.8	22	Y180L-4	76 82 79.5	1.6 2.4 4.7	273	200 150	304
6×11SC	118 188 244	32.7 52.2 67.7	15.6 13.2 9.8	1480	7.1 8.6 8.9	11	Y160M-4	70.5 78.5 73	1.8 2.4	229	200 150	304
6×11SC	110 150 165	30.5 41.6 45.8	7.8 6.2 5.3	1480	3.7 3.7 3.6	5.5	Y132S-4	63 68 66	1.6 1.6	179	200 150	304
6×9SB	173 245 300	48 68 83.3	16 14 11.5	1480	9.4 10.86 11.3	15	Y160L-4	80 86 83	1.5 2.1 4.1	229	200 150	306
6×9SB	167 208 264	46.4 57.7 73.3	11.6 10.5 8.2	1480	6.6 7 7.4	11	Y160M-4	80 84 80	1.5 1.7 2.7	203	200 150	306
6×9SB	130 188 220	36 52.2 61.1	8.8 7 6	1480	4.45 4.6 4.8	7.5	Y132M-4	70 78 75	1.6 1.9	178	200 150	306

参数型号	流量 Q		扬程 H	转速 n	轴功率 Pa	配带电动机		效率 η	必须汽蚀余量	叶轮名义直径	进出口径	泵重
	流量 Q		扬程 H	转速 n	轴功率 Pa	功率	型号	效率 η	必须汽蚀余量	叶轮名义直径	进出口径	泵重
	m3/s	L/s	m	r/min	kw	kw	型号	%	m	mm	mm	kg
6×14SD	222 330 402	61.6 91.6 111.6	41 36 30	1480	33 38 41	45	Y225M-4	75 83.5 80	1.8 3.1 5.2	365	200 150	454
6×14SD	198 300 362	55 83.3 100.5	34 29.5 25.5	1480	24.4 29 31.4	37	Y225S-4	75 83 80	2.5 3.6	330	200 150	454
6×14SD	186 262 340	51.6 72.7 94.4	28 24 17	1480	18.9 21.1 20.98	30	Y200L-4	75 81 75	2.1 3.1	299	200 150	454
6×14SD	152 220 252	42.2 61.1 70	19 16 14	1480	11.2 12.6 12.8	15	Y160L-4	70 75.5 75	1.8 2	254	200 150	572
6×18SE	465 525 605	129 145.8 168	58.5 55 48.2	1480	92.6 92.5 99.2	110	Y315S-4	80 85 80	3.4 3.8 5	460	250 150	572
6×18SE	445 500 565	123.6 138.8 157	54 51 43.6	1480	81.8 82.7 83.9	110	Y315S-4	80 84 80	3.2 3.6 4.4	436	250 150	572
6×18SE	320 450 545	88.9 125 151.4	47.3 42 32	1480	54.96 63.54 63.32	75	Y280S-4	75 81 75	2.8 3.3 4.1	406	250 150	572
6×18SE	310 410 485	86.1 113.89 134.7	40 35.2 29.2	1480	45 49.7 51.4	75	Y280S-4	75 79 75	2.7 3 3.5	373	250 150	572
8×9SB	275 414 490	76.4 115 136	15.2 12 10	1480	15.2 16.1 16.68	22	Y180L-4	75 84 80	2.7 3.6 4.7	227	250 200	454
8×9SB	226 338 420	62.7 93.89 116.66	12.6 10.6 8.4	1480	11 13.9 12.8	15	Y160L-4	70 81 75	2.9 3.6	210	250 200	454
8×9SB	220 300 365	55.65 83.3 101.3	10.4 8.3 6.8	1480	8.7 9.35 9.65	11	Y160M-4	65 72.5 70	2.9 3	197	250 200	454
8×11SC	240 350 400	66.6 97.2 111.1	23.8 21 19	1480	19.4 23.14 24.34	30	Y200L-4	80 86.5 85	3.4 4.2 6.2	279	250 200	442
8×11SC	225 310 372	62.5 86.1 103.3	19 17 14.4	1480	14.5 16.8 18.2	22	Y180-4	80 85.5 80	3.4 3.8 5	249	250 200	442

参数型号	流量 Q		扬程 H	转速 n	轴功率 Pa	配带电动机		效率 η	必须汽蚀余量	叶轮名义直径	进出口径	泵重
	流量 Q		扬程 H	转速 n	轴功率 Pa	功率	型号	效率 η	必须汽蚀余量	叶轮名义直径	进出口径	泵重
	m3/s	L/s	m	r/min	kw	kw	型号	%	m	mm	mm	kg
8×11SC	175 260 340	48.6 72.2 94.4	15 13 10	1480	10.2 11.8 12.34	15	Y160L-4	70 78 75	3.5 4.2	229	250 200	442
8×11SC	182 225 280	50.5 62.5 77.7	9 8 6	1480	6.86 7 6.93	11	Y160M-4	65 70 66	3.4 3.5	188	250 200	442
8×14SD	390 495 614	108 137.5 170.5	38.5 36 29.5	1480	49.2 55.7 59.4	75	Y280S-5	83 87 83	2.3 3.3 4.7	362	250 200	544
8×14SD	340 448 540	94.4 124.4 150	31.3 29 24	1480	35.7 41.1 43	55	Y250M-4	81 86 82	2 2.6 3.5	324	250 200	544
8×14SD	320 410 510	88.8 113.8 141.6	26 24 19.5	1480	28.3 31.9 33.8	45	Y225M-4	80 84 80	1.9 2.5 3	299	250 200	544
8×14SD	285 390 440	79.1 108.3 122.2	23 20 17.5	1480	23.5 26.2 26.2	30	Y200L-4	76 81 80	1.8 2.4 2.6	279	250 200	544
8×18SE	630 820 1030	175 227.7 286	62 55 43	1480	132.9 145.8 150.7	200	Y315L2-4	80 84.2 80	3.5 4.8 8.5	450	300 200	807
8×18SE	560 750 905	155.5 208.3 251.4	54.5 48.5 40	1480	105.8 118.6 125.6	160	Y315L1-4	78.5 83.5 78.5	3.2 4 5.6	423	300 200	807
8×18SE	495 660 840	137.5 183.3 233.3	49 44 36	1480	88 98 109.8	132	Y315M-4	75 80.5 75	3 3.5 5	398	300 200	807
8×18SE	426 600 750	118.3 166.6 208.3	43.5 38.5 32.2	1480	72 82.7 90	110	Y315S-4	70 76 73	2.9 3.3 4.2	373	300 200	807
8×23SF	400 545 600	111.1 151.4 166.6	115 110 102.4	1480	169 206.6 217	250	Y315M2-4	74 79 77	2.1 2.3 2.9	560	250 200	953
8×23SF	360 510 600	100 141.6 166.6	99 90 80	1480	131 160 174	220	Y335M-4 Y315M2-4 (ip23)	74 78 75	2.1 2.2 2.9	533	250 200	953
8×23SF	340 480 575	94.4 133.3 159.7	80 72 62.5	1480	100 127 132.2	160	Y315M2-4	74 77.5 74	2.1 2.2 2.5	483	250 200	953

参数型号	流量 Q		扬程 H	转速 n	轴功率 Pa	配带电动机		效率 η	必须汽蚀余量	叶轮名义直径	进出口径	泵重
	流量 Q		扬程 H	转速 n	轴功率 Pa	功率	型号	效率 η	必须汽蚀余量	叶轮名义直径	进出口径	泵重
	m3/s	L/s	m	r/min	kw	kw	型号	%	m	mm	mm	kg
8×23SF	270 420 480	75 116.6 133.3	64 56 49.5	1480	68 85.4 87.4	110	Y315S-4	69 75 74	2.1 2.1 2.2	423	250 20	953
10×11SC	410 540 640	113.89 150 177.8	23.8 22 18	1480	33.2 37.6 39.1	45	Y225M-4	80 86 80	3.4 4 6	286	300 250	594
10×11SC	380 510 580	105.5 141.6 161.1	19 16.2 13.8	1480	24.6 26.4 27.2	37	Y225S-4	80 85 80	3.3 3.6 4.5	254	300 250	594
10×11SC	320 460 540	88.9 127.7 150	15.6 13 9.8	1480	18.1 19.98 19.21	30	Y200L-4	75 81.5 75	3.4 4	236	300 250	594
10×11SC	320 380 465	88.9 105.5 129	9.5 8.5 6	1480	11.8 11.7 10.8	15	Y160L-4	70 75 70	3.1 3.4	211	300 250	594
10×14SD	550 785 975	152.7 218 270	41 37 29.2	1480	76.7 91.9 96.9	110	Y315S-4	80 86 80	3.4 4.8 7.3	368	300 250	780
10×14SD	515 690 855	143 191.6 237.5	32 29.2 24.2	1480	56 64 70.4	90	Y280M-4	80 85.5 80	3.1 4 5.5	323	300 250	780
10×14SD	480 645 750	133.3 179 208	25.6 22.3 18.8	1480	43 47.4 49.5	75	Y280S-4	77.5 82.5 77.5	3.1 3.8 4.4	298	300 250	780
10×14SD	415 600 690	115.2 166.6 191.6	22 18 14.2	1480	33.8 37.46 35.57	45	Y225M-4	73.5 78.5 75	2.9 3.7 4	273	300 250	780
10×18SE	795 1040 1275	220.8 288.8 354	62.2 57.5 48.8	1480	168.3 191.3 211.8	250	Y355M-5 Y315M2-4 (IP23)	80 85 80	3.5 4.2 7.7	457	350 250	96.3
10×18SE	735 930 1170	204 258 325	55 51.3 43.5	1480	137.6 162.4 173.2	220	Y355M-4 Y315M2-4 (IP23)	80 74.5 80	3.5 3.8 5.6	432	350 250	963
10×18SE	690 855 1080	191.5 237.5 300	48.5 46 40	1480	113.9 127.5 147	185	Y355M-4	80 84 80	3.5 3.6 4.6	406	350 250	963
10×18SE	570 780 960	158.3 216.6 266.6	43 40.5 36	1480	88.9 104.9 117.6	132	Y315M1-4	75 82 80	3.6 3.5 4	381	350 250	963

参数型号	流量 Q		扬程 H	转速 n	轴功率 Pa	配带电动机		效率 η	必须汽蚀余量	叶轮名义直径	进出口径	泵重
	流量 Q		扬程 H	转速 n	轴功率 Pa	功率	型号	效率 η	必须汽蚀余量	叶轮名义直径	进出口径	泵重
	m3/s	L/s	m	r/min	kw	kw	型号	%	m	mm	mm	kg
12×14SD	850 1140 1360	236.1 316.6 377.7	41.8 37 31	1480	120.9 133 138.3	160	Y315M2-4	80 86.2 83	3.6 4.8 7.1	371	350 300	953
12×14SD	800 1060 1290	222.2 294.4 358.3	36 32 25	1480	98 107.4 109.7	132	Y315M-4	80 86 80	3.5 4.1 6.2	341	350 300	953
12×14SD	720 940 1100	200 261.1 305.5	26.5 23.5 19	1480	64.9 71.19 71.14	90	Y280M-4	80 84.5 80	3.5 3.8 4.3	310	350 300	953
12×14SD	720 860 1000	200 238.8 277.7	20.2 18 14	1480	52.8 53 50.8	75	Y280S-4	75 79.5 75	3.5 3.6 4	280	350 300	953

Installation of S-type split pump

1. Check whether the S-type split pump and motor are damaged.

2. The installation height of the water pump, plus the hydraulic loss of the suction pipe and its speed energy, shall not be greater than the allowable suction vacuum height specified in the sample. The foundation size shall conform to the installation size of the pump unit

3. Installation sequence:

① Place the water pump on the concrete foundation with embedded anchor bolts, adjust the wedge cushion blocks between them to calibrate the level, and properly tighten the anchor bolts to prevent walking.

② Pour concrete between the foundation and the pump foundation.

③ After the concrete is dry, tighten the anchor bolts and recheck the levelness of the S-type split pump.

④ Correct the concentricity of the motor shaft and the pump shaft. Make the two shafts in a straight line. The tolerance of the concentricity on the external axis of the two shafts is 0.1mm, and the tolerance of the non-uniformity of the end clearance along the circumference is 0.3mm (

Connect the inlet and outlet water pipes and calibrate them once after the test run, which should still meet the above requirements).

⑤ After checking that the rotation direction of the motor is consistent with that of the water pump, install the coupling and the connecting pin.

4. The water inlet and outlet pipes shall be supported by another support, and shall not be supported by the pump body.

5. The joint surface between the water pump and the pipeline shall ensure good air tightness, especially the water inlet pipeline, which shall strictly ensure no air leakage, and there shall be no possibility of trapping air on the device.

6. If the S-type split pump is installed above the water inlet level, the bottom valve can be installed to start the pump. Vacuum water diversion can also be used.

7. Generally, gate valve and check valve shall be installed between the water pump and the outlet pipe (not required if the lift is less than 20m), and the check valve shall be installed behind the gate valve.

The above installation method refers to the pump unit without a common base.

Install the pump with a common base, and adjust the level of the unit with the wedge sizing block between the base and the concrete foundation. Then concrete shall be poured in between. The installation principles and requirements are the same as those of the unit without a common base.

Start, stop and operation of S-type split pump

1. Start and stop:

① Before starting, rotate the rotor of the pump, and it should slide gently and evenly.

② Close the water outlet gate valve and inject water into the pump (if there is no bottom valve, vacuum pump shall be used to draw water) to ensure that the pump is full of water and free of air.

③ If the pump is equipped with a vacuum gauge or pressure gauge, close the cock connected to the pump before starting the motor, and then open it after the speed is normal; Then gradually open the outlet gate valve. If the flow is too large, properly close the gate valve to adjust; On the contrary, when the flow is too small, open the gate valve.

④ Tighten the compression nuts on the packing gland evenly to make the liquid leak out in drops, and pay attention to the temperature rise at the packing chamber.

⑤ When the water pump is stopped, the cocks of the vacuum gauge and pressure gauge and the gate valve on the outlet pipe should be closed, and then the power supply of the motor should be turned off. If the ambient temperature turns low, the square screw plug at the lower end of the pump should be opened to drain the residual water to avoid the pump body from freezing and cracking.

⑥ When it is not used for a long time, the water pump shall be disassembled to wipe the water on the parts, and the machined surface shall be coated with antirust oil for safekeeping.

1. Operation:

① The high temperature of water pump bearing shall not exceed 75 ℃.

② The quantity of calcium base grease used to lubricate the bearing should be 1/3~1/2 of the bearing body space.

③ When the packing is worn, the packing gland can be properly pressed. If there is too much hemp damage, it should be replaced.

④ Regularly check the coupling parts and pay attention to the temperature rise of the motor bearing.

⑤ In case of any noise or other abnormal sound during operation, stop the machine immediately, check the cause and eliminate it.

⑥ It is not allowed to arbitrarily increase the speed of the water pump, but it can be used by reducing the speed. For example, the rated speed of this type of pump is n, the flow is Q, the head is H, the shaft power is N, and the reduced speed is n1. After the speed is reduced, the flow, head, and shaft power are Q1, H1, and N1 respectively. The relationship between them can be converted using the following formula.

Q1=(n1/n)Q H1=(n1/n)2 H N1=(n1/n)3 N

Assembly and disassembly of S-type split pump

1. Assembly of rotor parts: raise funds to install impeller, shaft sleeve, shaft sleeve nut, packing sleeve, packing ring, packing gland, water retaining ring and bearing parts on the pump shaft, and cover them with double suction seal rings, and then install the coupling.

2. Install the rotor parts on the pump body, adjust the axial position of the impeller to the middle of the double suction seal ring and fix it, and fasten the bearing body gland with the fixing screws.

3. Install the packing, place the split face paper pad, cover the pump cover, tighten the stud pin, tighten the pump cover nut, and then install the packing gland. However, do not press the packing too tightly. If the real material is too tight, the shaft sleeve will heat up and consume more power. Do not press it too loosely. If it is too loose, the liquid leakage will increase and the pump efficiency will decrease.

After the assembly is completed, rotate the pump shaft by hand without rubbing. The rotation is smooth and even. The disassembly can be carried out in the reverse order of the above assembly.

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