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Yongjia Longyang Pump Valve Co., Ltd
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GC horizontal multi-stage boiler feed pump
Release time: 2015-5-21 10:17:17 Brand: Longyang Pump Valve model: GC series Flow rate: 5~55m ³/h Head: 46~301m Power: 3~75KW Speed: 2950r/min Caliber
Product details

1 Overview of GC horizontal multi-stage boiler feed pump products

GC type pump is a horizontal, single suction multi-stage, segmented centrifugal pump. It has the characteristics of high efficiency, wide performance range, safe and stable operation, low noise, long service life, and easy installation and maintenance. Used for transporting clean water or other liquids with physical and chemical properties similar to water.

2 All of our products are designed and optimized using computers. Our company has strong technical strength, rich production experience, and comprehensive testing methods to ensure stable and reliable product quality.

GC卧式多级锅炉给水泵型号意义

3 The significance of GC horizontal multi-stage boiler feed pump model

Application of GC horizontal multi-stage boiler feed pump product

4 The GC type horizontal multi-stage boiler feed pump is suitable for industrial and urban water supply and drainage, high-rise building pressurized water supply, garden sprinkler irrigation, fire boosting, long-distance water supply, heating, bathroom and other cold and warm water circulation boosting and equipment matching, especially suitable for small boiler feed water.

Main characteristics of GC horizontal multi-stage boiler feed pump
1. The hydraulic model is advanced, efficient, and has a wide range of performance.
2. The pump runs smoothly with low noise.

5 3. The shaft seal adopts soft packing sealing, which is safe, reliable, structurally simple, and easy to maintain.

GC卧式多级锅炉给水泵结构图

Structure diagram of GC horizontal multi-stage boiler feed pump
1. The GC type water pump is a multi-stage segmented design, with the inlet and outlet of the 1.5GC-4GC models located on the inlet and outlet sections respectively, all vertically upward. The head of the water pump can be increased or decreased according to usage needs. Whether the water pump is well assembled or not has a great impact on its performance, especially the relative position between the outlet of each impeller and the inlet of the guide vane. The center of the outlet of each suction impeller must be aligned with the center of the guide vane. Any slight deviation will reduce the flow rate, head, and efficiency of the water pump. Therefore, it is necessary to pay attention to assembly after maintenance, and adjust if there is any deviation.
2. The main components of GC type water pump include shaft, shaft sleeve, inlet section, impeller, guide wing, sealing ring, middle section, outlet section, balance ring, balance plate, tail cover inlet section, middle section, and outlet section cover, all of which are made of cast iron, forming the working chamber of the pump.
3. The impeller is made of cast iron and has blades inside. The liquid enters on one side along the axial direction. Due to the unequal pressure on the impeller before and after, there must be an axial force, which is borne by the balance plate. The impeller is manufactured through static balance testing.
4. The shaft is made of high-quality carbon steel, with an impeller installed in the middle, fixed on the shaft with keys, shaft sleeves, and shaft sleeve nuts. One end of the shaft is equipped with a coupling component and directly connected to the motor. When viewed from the direction of rotation, the pump shaft rotates clockwise.
5. Is the sealing ring cast? Made to prevent high-pressure water from leaking back into the inlet section of the water pump, it is fixed in the inlet and middle sections respectively. It is a vulnerable part and can be replaced with spare parts after wear and tear.
6. The balance ring is made of cast iron and fixed on the outlet section. It, together with the balance plate, forms the balance device. The balance plate is made of wear-resistant cast iron and is installed on the shaft, located between the 7th and 7th sections and the tail cover, to balance axial forces. The shaft sleeve is made of cast iron and located at the two packing chambers, used to fix the impeller and protect the pump shaft. For vulnerable parts, they can be replaced with spare parts after wear and tear.
7. The bearing is a single row radial ball bearing lubricated with calcium based grease. The packing plays a sealing role, preventing air from entering and a large amount of liquid from leaking out.

6 8. The packing seal consists of a packing chamber on the inlet section and tail cover, a packing gland, a packing ring, and packing, etc. A small amount of high-pressure water flows into the packing chamber to provide a water seal. The tightness of the filler must be appropriate, neither too tight nor too loose, based on the liquid being able to seep out drop by drop. If the packing is too tight, the shaft sleeve is prone to heating and consuming power. The packing is too loose, which reduces the efficiency of the water pump due to liquid loss.

Performance parameters of GC horizontal multi-stage boiler feed pump model
traffic
(m³/h)
head
(m)
speed
(r/min)
efficiency
(%)
Power (kW) shaft power
Motor power 6 46 2950 38 2 3
1.5GC-5×2 6 69 2950 38 3 4
1.5GC-5×3 6 92 2950 38 4 5.5
1.5GC-5×4 6 115 2950 38 5 7.5
1.5GC-5×5 6 138 2950 38 6 7.5
1.5GC-5×6 6 161 2950 38 7 7.5
1.5GC-5×7 6 184 2950 38 8 11
1.5GC-5×8 6 207 2950 38 9 11
1.5GC-5×9 10 64 2950 39.6 4.4 7.5
2GC-5×2 10 96 2950 39.6 6.6 11.0


2GC-5×3 10 128 2950 39.6 8.8 15.0
2GC-5×4 10 160 2950 39.6 11.0 15.0
2GC-5×5 10 192 2950 39.6 13.2 18.5
2GC-5×6 10 224 2950 39.6 15.4 22.0
2GC-5×7 10 256 2950 39.6 17.6 30.0
2GC-5×8 10 288 2950 39.6 19.8 30.0
2GC-5×9 15 62 2950 43.7 5.8 11.0
20 54 2950 47.4 6.2 11.0
2.5GC-6×2 15 93 2950 43.7 8.7 15.0
20 81 2950 47.4 9.3 15.0
2.5GC-6×3 15 124 2950 43.7 11.6 22.0
20 108 2950 47.4 12.4 22.0
2.5GC-6×4 15 155 2950 43.7 14.5 22.0
20 135 2950 47.4 15.5 22.0
2.5GC-6×5 15 186 2950 43.7 17.4 30.0
20 162 2950 47.4 18.6 30.0
2.5GC-6×6 15 217 2950 43.7 20.2 30.0
20 189 2950 47.4 21.7 30.0
2.5GC-6×7 15 248 2950 43.7 23.2 37.0
20 216 2950 47.4 24.8 37.0
2.5GC-6×8 15 279 2950 43.7 26.1 22
20 243 2950 47.4 27.9 22
2.5GC-6×9 30 86 2950 51 13.8 30
45 82 2950 60 16.8 30
55 76 2950 62.5 18.1 30
4GC-8×2 30 129 2950 51 20.7 37
45 123 2950 60 25.2 37
55 114 2950 62.5 27.2 37
4GC-8×3 30 172 2950 51 27.6 55
45 164 2950 60 27.6 55
55 152 2950 62.5 36.2 55
4GC-8×4 30 215 2950 51 34.5 55
45 205 2950 60 42.0 55
55 190 2950 62.5 45.3 55
4GC-8×5 30 258 2950 51 41.4 75
45 246 2950 60 50.4 75
55 228 2950 62.5 54.1 75
4GC-8×6 30 301 2950 51 48.2 75
45 287 2950 60 58.8 75
55 266 2950 62.5 63.4 75
4GC-8×7 30 344 2950 51 55.0 100
45 328 2950 60 67.0 100
55 304 2950 62.5 73.0 100
4GC-8×8 30 387 2950 51 62.0 100
45 369 2950 60 75.5 100
55 342 2950 62.5 82.0 100
4GC-8×9 30 430 2950 51 69.0 4GC-8×10
45 410 2950 60 84.0 -
55 380 2950 62.5 91.0 -

7 -

Installation dimensions of GC horizontal multi-stage boiler feed pump

1.5GC、2GC、2.5GC外形尺寸图

Outline dimension drawings for 1.5GC, 2GC, and 2.5GC
Outline dimension table model series
size A B C D E F G H I J K L M
N 2 576 227.5 166 247.5 120 50 248 122.5 135 150 165 220 175 50
3 626 227.5 210 247.5 170 50 248 172.5 135 150 165 220 175 50
4 676 227.5 260 247.5 220 50 248 222.5 135 150 165 220 175 50
5 726 227.5 310 247.5 270 50 248 272.5 135 150 165 220 175 50
6 776 227.5 360 247.5 320 50 248 322.5 135 150 165 220 175 50
7 826 227.5 410 247.5 370 50 248 372.5 135 150 165 220 175 50
8 876 227.5 460 247.5 420 50 248 422.5 135 150 165 220 175 50
9 926 227.5 510 247.5 470 50 248 472.5 135 150 165 220 175 50

1.5GC-5 model series
size A B C D E F G H I J K L M
N 2 740 290 210 315 160 70 325 160 180 220 210 320 270 75
3 800 290 270 315 220 70 325 220 180 220 210 320 270 75
4 860 290 330 315 280 70 325 280 180 220 210 320 270 75
5 920 290 390 315 340 70 325 340 180 220 210 320 270 75
6 980 290 450 315 400 70 325 400 180 220 210 320 270 75
7 1040 290 510 315 460 70 325 460 180 220 210 320 270 75
8 1100 290 570 315 520 70 325 520 180 220 210 320 270 75
9 1160 290 630 315 580 70 325 580 180 220 210 320 270 75
1.5GC-5
吸入吐出法兰尺寸图 Dimensional drawing of suction and discharge flange

model

size
Inlet and outlet flange size D O a
n-d 40 110 145 1.5GC
4-Φ18 50 125 160 2GC
4-Φ18 65 145 180 2.5GC
8-Φ18

2.5GC-3.5、4GC外型尺寸图

2.5GC-3.5, 4GC Outline Dimensional Drawing model series
size A B C D E F G H I J K L M
N 2 879 320 320 355 250 85 385 190 215 285 240 420 340 85
3 945 320 395 355 325 85 385 265 215 285 240 420 340 85
4 1020 320 470 355 400 85 385 340 215 285 240 420 340 85
5 1095 320 545 355 475 85 385 415 215 285 240 420 340 85
6 1170 320 620 355 550 85 385 490 215 285 240 420 340 85
7 1245 320 695 355 625 85 385 265 215 285 240 420 340 85
吸入吐出法兰尺寸图 4GC


model
size
Inlet and outlet flange size D O a
n-d 100 190 230 4GC
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