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QW submersible sewage pump, QW submersible sewage pump

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product description
QW submersible sewage pump, QW submersible sewage pump uses a large flow channel anti-clogging hydraulic component design, which greatly improves the ability of dirt to pass through. It can effectively pass 5 times the fiber diameter of the pump and solid particles with a diameter of about 50% of the pump diameter. Reasonable design, reasonable supporting motor, high efficiency, and significant energy saving effect. The mechanical seal adopts two-channel series seal. The material is hard wear-resistant tungsten carbide, which is durable and wear-resistant. It can make the pump run continuously for more than 800 hours. The pump is compact in structure, small in size, convenient to move, and easy to install. There is no need to build a pump room, and it can work when submerged in water, which greatly reduces the engineering cost. There is an oil-water probe in the pump oil chamber. When the mechanical seal on the pump side is damaged, water enters the oil chamber, and the probe generates a signal to protect the pump.

Can be equipped with full-automatic safety protection control cabinet according to user needs, to monitor the water leakage, electricity leakage, overload and over temperature of the pump to ensure reliable and safe pump operation. The dual-rail automatic coupling installation system brings great convenience to the installation and maintenance of the pump, and people do not need to enter and exit the sewage pit for this purpose. The float switch can be changed according to the required water level. Automatic control of the pump stop, no special care is required. Make sure that the motor is not overloaded when using the lift range. Depending on the application, the motor can adopt a water jacketed external third-party circulating cooling system, which can ensure the safe operation of the electric pump in a dry (dry) state. There are two kinds of installation methods: fixed automatic coupling installation and mobile free installation, which can meet different application occasions. Structure description QW type non-blocking submersible sewage pump consists of two parts: motor and pump, which are separated by oil isolation chamber and mechanical seal assembly. It is a mechatronic product. The motor and pump share the same shaft (rotor). The length of the entire water pump is short. Compact structure.

Equipped with a variety of protection devices to make the pump run reliably, its main components have the following functions: Signal line 1: Equipped with a full water pump control cabinet to implement all-round protection for the pump, including water leakage, phase failure, short circuit, overheating, motor overload and other items. Motor stator 8: Class B or F insulation. Water leakage probe 11: This component is installed in the oil chamber. When the mechanical seal is damaged, water enters the oil chamber. The probe can send a signal to protect the pump by the control system. Mechanical seal 13: It adopts two-channel series seal, and adopts new hard corrosion-resistant tungsten carbide material, which has the characteristics of reliable seal, wear resistance and long life. Impeller 17: The impeller adopts a single flow path or a dual flow path structure, and has a strong capacity to pass through. It can pass large materials and fiber waste to reduce blockage and entanglement faults. Pump body 15: Used with the impeller to make the pump highly efficient. Sealing ring 18: It is installed at the mouth ring of the pump body. When the impeller wears due to the running of the impeller, the seal ring can be replaced.

Product features of submersible sewage pump
1. The unique single or double-disc wheel structure greatly improves the ability of dirt to pass through. It can effectively pass the double fiber material of the pump caliber and the solid particles with a diameter of about 50% of the pump caliber.
2. The mechanical seal adopts new hard and corrosion-resistant titanium titanium tungsten material, which can make the pump run continuously for more than 8000 hours.
3. The overall structure is compact, small in size, low in noise, significant in energy-saving effects, convenient for maintenance, no need to build a pump room, and it can work when submerged, greatly reducing project cost.
4. The sealed oil chamber is provided with a high-precision interference leakage detection sensor, and a thermal element is embedded in the stator winding to automatically protect the pump motor.
5. It can be equipped with a full-automatic control cabinet according to the user's needs, which can automatically protect the pump from water leakage, electricity leakage, overload and over-temperature, which improves the safety and reliability of the product.
6. The float switch can automatically control the start and stop of the pump according to the change of the required liquid level. It does not require special supervision and is extremely convenient to use.
7. The WQ series submersible sewage pump can be equipped with a dual-rail automatic coupling installation system according to the needs of the user. Its installation and maintenance bring greater convenience, and people can enter the sewage pit without having to do so.
8. It can be used in full head, and the motor will not be overloaded.
9. There are two different installation methods for submersible sewage pumps: fixed automatic coupling installation system and mobile free installation system.

Main uses of submersible sewage pumps <br> Submersible sewage pumps are suitable for chemical, petroleum, pharmaceutical, mining, paper industry, cement plants, steel plants, power plants, coal processing industries, and urban sewage treatment plants drainage systems, municipal engineering, construction sites Contaminated sewage and dirt on conveyor belts in other industries, submersible sewage pumps can also be used to pump clean water and corrosive media.

Submersible sewage pump installation method <br> The indoor sewage tank (water collecting pit) sewage pump uses mobile installation (hose) (single pump), fixed installation (rigid pipe) (single pump, double pump) and with automatic coupling device Three types of fixed installation (single pump, double pump). The hose-connected mobile installation is limited to the case of submersible sewage pumps and discharge pipes with a power of ≤N 7.5 kW and DN of ≤100 mm. The outdoor sewage tank only adopts a form of fixed installation (dual pump) with automatic coupling device. The installation method of the sewage pump used for the fire elevator drainage pit shall adopt 2 hard pipe connection fixed type or 2 fixed self-coupling type, and the effective volume of the collecting well shall not be less than 2.0 m3, and the rated flow rate of the sewage pump shall not be less than 36 m3 / h.

Conditions of use of submersible sewage pump
1. The medium temperature does not exceed 60 ℃, the medium weight is 11.3 × 103kg / m3, and the PH value is in the range of 59.
2. For pumps without internal self-circulating circulation cooling system, the part of the motor exposed to the liquid surface must not exceed 1/2.
3. The main material of this pump is cast iron, so it cannot be used for pumping highly corrosive liquids.

model Caliber (mm) Flow (m3 / h) Head (m) Speed (r / min) Power (KW)
1 25-8-12-0.75 25 8 12 2900 0.75
2 25-8-22-1.1 25 8 twenty two 2900 1.1
3 25-8-25-1.5 25 8 25 2900 1.5
4 32-12-15-1.1 32 12 15 2900 1.1
5 40-15-15-1.5 40 15 15 2900 1.5
6 40-15-30-2.2 40 15 30 2840 2.2
7 50-20-7-0.75 50 20 7 1390 0.75
8 50-10-10-0.75 50 10 10 1390 0.75
9 50-20-15-1.5 50 20 15 2840 1.5
10 50-15-25-2.2 50 15 25 2840 2.2
11 50-18-30-3 50 18 30 2880 3
12 50-25-32-5.5 50 25 32 2900 5.5
13 50-20-40-7.5 50 20 40 2900 7.5
14 65-25-15-2.2 65 25 15 2840 2.2
15 65-37-13-3 65 37 13 2880 3
16 65-25-30-4 65 25 30 2890 4
17 60-30-40-7.5 65 30 40 2900 7.5
18 65-35-50-11 65 35 50 2930 11
19 65-35-60-15 65 35 60 2930 15
20 80-40-7-2.2 80 40 7 1420 2.2
twenty one 80-43-13-3 80 43 13 2880 3
twenty two 80-40-15-4 80 40 15 2890 4
twenty three 80-65-25-7.5 80 65 25 2900 7.5
twenty four 100-80-10-4 100 80 10 1440 4
25 100-110-10-5.5 100 110 10 1440 5.5
26 100-100-15-7.5 100 100 15 1440 7.5
27 100-85-20-7.5 100 85 20 1440 7.5
28 100-100-25-11 100 100 25 1460 11
29 100-100-30-15 100 100 30 1460 15
30 100-100-35-18.5 100 100 35 1470 18.5
31 125-130-15-11 125 130 15 1450 11
32 125-130-20-15 125 130 20 1450 15
33 150-145-9-7.5 150 145 9 1450 7.5
34 150-180-15-15 150 180 15 1450 15
35 150-180-20-18.5 150 180 20 1450 18.5
36 150-180-25-22 150 180 25 1450 twenty two
37 150-130-30-22 150 130 30 1450 twenty two
38 150-180-30-30 150 180 30 1450 30
39 150-200-30-37 150 200 30 1450 37
40 200-300-7-11 200 300 7 980 11
41 200-250-11-15 200 250 11 980 15
42 200-250-15-18.5 200 250 15 1450 18.5
43 200-400-10-22 200 400 10 1450 twenty two
44 200-400-13-30 200 400 13 1450 30
45 200-300-15-22 200 300 15 1450 twenty two
46 200-250-22-30 200 250 twenty two 1450 30
47 200-350-25-37 200 350 25 1450 37
48 200-400-30-45 200 400 30 1450 45
49 250-600-9-30 250 600 9 980 30
50 250-600-12-37 250 600 12 1450 37
51 250-600-15-45 250 600 15 1450 45
52 250-600-20-55 250 600 20 1450 55
53 250-600-25-75 250 600 25 1450 75
54 250-800-12-45 250 800 12 980 45
55 300-500-15-45 300 500 15 980 45
56 300-800-15-55 300 800 15 980 55
57 300-600-20-55 300 600 20 980 55
58 300-800-20-75 300 800 20 980 75
59 300-950-20-90 300 950 20 980 90
60 300-1000-25-110 300 1000 25 980 110
61 300-1000-35-132 300 1000 35 980 132
62 300-1100-10-55 300 1100 10 980 55
63 350-1200-6-30 350 1200 6 980 30
64 350-1100-10-45 350 1100 10 980 45
65 350-1100-12-55 350 1100 12 980 55
66 350-1500-15-90 350 1500 15 980 90
67 350-1200-18-90 350 1200 18 980 90
68 350 -1800-40-280 350 1800 40 980 280
69 350-1800 -43-315 350 1800 43 980 315
70 400-1500-5-30 400 1500 5 980 30
71 400-2000-6-55 400 2000 6 740 55
72 400-2600-6-75 400 2600 6 740 75
73 400-1500-12-75 400 1500 12 740 75
74 400-2000 -10-90 400 2000 10 740 90
75 500-2000-7-55 500 2000 7 740 55
76 500-2200-8-75 500 2200 8 740 75
77 500-2200-10-90 500 2200 10 740 90
78 500-2600-15-160 500 2600 15 740 160
79 600-3000-16-220 600 3000 16 740 220
80 600-5500-10 -250 600 5500 10 740 250
81 600-3750-17-250 600 3750 17 740 250
82 600-6000-10-280 600 6000 10 740 280

Troubleshooting the blowdown pump

Corrosion resistance of main materials of pumps (for reference)

medium concentration
(%)
Polypropylene concentration
(%)
ABC
25 ° C 50 ° C 20 ° C 60 ° C
sulfuric acid 60 <30 X
Nitric acid 25 20 Ο
hydrochloric acid <36 <38
Hydrofluoric acid 35 40 X
acetic acid <80 <20 Ο
Sodium hydroxide 100
Potassium dichromate 25
Smelly water X Ο X
Ethanol <50
acetone 10 Ο
Tetrachloroethane Ο Ο X
Freon 22 Ο Ο
Bleach CL13% CL12.5% Ο Ο
Plating solution Ο X
Photographic fluid

medium concentration
(%)
stainless steel concentration
(%)
ceramics
25 ° C 50 ° C 25 ° C 50 ° C
sulfuric acid <5 X
Nitric acid 70
hydrochloric acid X
Hydrofluoric acid X 0 to 100 X
acetic acid <20
Sodium hydroxide 70 Ο X
Potassium dichromate 40 ~ 60 10 ~ 20
Smelly water Ο
Ethanol
acetone
Tetrachloroethane 50
Freon 22
Bleach CL12% X
Plating solution
Photographic fluid

Note: △ is excellent; √ is good; 0 is available, but there is obvious corrosion; X is severely corroded and not applicable.


Physical and mechanical properties of PVDF

performance unit according to
density g / cm3 1.75-1.79
Ratio cm3 / g 0.56-0.75
Melting range 0c 155-170
Refractive index n25D 1.42
Molding shrinkage % 2-3
Stretch strong hair (yield) Mpa 28-41
Stretching strong hair (break) Mpa 31-52
Elongation (break) % 100-400
Impact strength (no notch) KJ / m 107-214
Compressive strength Mpa 55-69
Hardness (Shore D) 70-80
Wear-resistant mg / 1000r 7.0-9.0
Limiting oxygen index (l0 I) % 44
Burning rate VD
Resistivity u194 1.0x10 15
Common dielectrics 10 31 CYCles 9.7


Polyvinylidene fluoride (PVDF) chemical resistance

Chemical media concentration
(%)
Maximum use temperature ℃ Chemical media concentration
(%)
Maximum use temperature ℃ Chemical media concentration
(%)
Maximum use temperature ℃
hydrochloric acid 36 135 Hydrogen hydroxide <10 85 Ethanol 135
sulfuric acid <60 120 Hydrogen hydroxide 50 50 Diethyl ether 50
sulfuric acid 80-93 95 Ammonium carbonate 110 formaldehyde 37 50
sulfuric acid 90 65 Calcium carbonate 135 acetone 10% water solution 50
Nitric acid <50 50 Sodium carbonate Aqueous solution 135 Hydrazine Aqueous solution 95
Phosphoric acid <85 135 Sodium bicarbonate Aqueous solution 120 benzene 75
Phosphoric acid 85 110 ammonia 110 aniline 50
acetic acid 10 110 brine 135 Toluene 85
acetic acid 80 80 Sodium hydrogen phosphate Aqueous solution 120 phenol 50
acetic acid 100 50 Calcium phosphate Aqueous solution 135 chlorobenzene 135
Trichloroacetic acid <10 95 Calcium Oxide Aqueous solution 135 Naphthalene 95
Trichloroacetic acid 50 50 Potassium oxide Aqueous solution 135 Methyl chloride 135
oxalic acid 50 Ammonium oxide Aqueous solution 135 Chloroform 50
Benzenesulfonic acid Aqueous solution 50 Iron oxide Aqueous solution 135 Carbon tetrachloride 135
Hydrofluoric acid 40-100 95 Ferrous sulfate Aqueous solution 135 Ethyl chloride 135
Hydrofluoric acid 40 120 Ammonium sulfate Aqueous solution 135 1.2 Trichloroethane 135
Hydrobromic acid 50 130 Ammonium sulfate Aqueous solution 135 1.1.2 Trichloroethane 65
Peroxyacid 10 95 Sodium nitrate Aqueous solution 135 Tetrachloroethane 120
Peroxyacid 70 50 Ammonium phosphate Aqueous solution 135 Vinyl chloride 95
Sodium hypochlorite 6-15 95 Urea Aqueous solution 120 Trichloroethylene 135
Potassium chlorate 100 carbon dioxide 80 Dichloroethylene 110
Chromic acid <40 80 carbon dioxide 75 natural gas 135
Chromic acid 50 50 carbon dioxide 65 Fuel oil 135
Potassium ferrate 120 chlorine element 95 Paraffin oil 120
hydrogen peroxide <30 95 bromine element 65
Sodium peroxide 95 iodine element 65



Corrosion performance table of fluoroplastic

Temperature, ℃
medium concentration% 25 200 medium concentration% Temperature, 200 ℃
sulfuric acid 0-100 Formic acid
Oleum Acetic acid 0-ice
Nitric acid 0-100 acetic acid
Oleum Propionic acid
hydrochloric acid acrylic acid
Phosphoric acid Acrylic anhydride √ (boiling point)
Hydrofluoric acid Methacrylate √ (boiling point)
Hydrobromic acid Butyric acid
Hydroiodic acid Caprylic acid
Hydrocyanic acid Lauric acid
Nitrite Palmitic acid
Nitrite Stearic acid
Chloric acid Oleic acid
Hypochlorous acid Linoleic acid
perchloric acid Abietic acid
Tetraphosphoric acid fatty acid
Carbonic acid Chloroacetic acid
Chromic acid Lactic acid
Silicic acid Oxalic acid
Boric acid Fumaric acid
Arsenic acid Citric acid
Selenic acid niacin
Fluosilicic acid
Fluoboric acid
Chlorosulfonic acid
Wang Shui
Mixed acid

medium concentration% Temperature, 200 ℃
Sodium hydroxide
Potassium hydroxide
Ammonium hydroxide
magnesium hydroxide
Calcium hydroxide
Aluminum hydroxide
Barium hydroxide
Iron hydroxide
Ferrous hydroxide
Nickel salt
Nickel sulfate
Nickel nitrate
Nickel chloride
Zinc salt
Zinc sulfate
Zinc nitrate
Zinc chloride
QW submersible sewage pump, QW submersible sewage pump product manual download
QW submersible sewage pump, QW submersible sewage pump product manual download

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Please download the "QW Submersible Sewage Pump, QW Submersible Sewage Pump" product manual, unzip the file, add the micro signal "331044666" or scan the QR code below to request the decompression password.
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