Overview of QWB Explosion proof Submersible Sewage Pump:

The explosion-proof sewage pump adopts a submersible explosion-proof motor, a submersible explosion-proof cable, a unique structure, and a new type of mechanical seal, which can effectively transport solid materials and long fibers, suitable for working environments that require explosion-proof (note: as the cable and submersible pump are both submerged in liquid, for safety reasons, they cannot directly work in flammable and explosive liquids, only suitable for places where explosion-proof is required in the surrounding environment). The impeller of the sewage pump adopts a single or double channel form, and the explosion-proof sewage pump is similar to a curved pipe with the same cross-sectional size, with very good overcurrent. With a reasonable volute chamber, the sewage pump has high efficiency. The impeller has undergone dynamic and static balance tests, so that the pump operates without vibration. Submersible sewage pumps are a new generation of pump products that have been successfully developed based on the introduction of advanced foreign technology and the characteristics of domestic sewage pumps. They have significant energy-saving effects, anti entanglement, no blockage, automatic installation, and automatic control. This unobstructed submersible sewage pump has unique advantages in discharging solid particles and long fiber garbage.

QWB explosion-proof sewage pump product features:

1. The QWB submersible pump adopts a unique single blade or double blade impeller structure, which greatly improves the ability of pollutants to pass through. It can effectively pass through fiber materials with a diameter of 5 times the pump diameter and solid particles with a diameter of about 50% of the pump diameter.

2. The mechanical seal adopts a new type of hard and corrosion-resistant tungsten carbide material, and the seal is improved to a double end face seal, allowing it to operate in the oil chamber for a long time, which can ensure the safe and continuous operation of the pump for more than 8000 hours.

3. The overall structure is compact, the volume is small, the noise is low, the energy-saving effect is significant, the maintenance is convenient, and there is no need to build a pump room. It can work underwater, greatly reducing the project cost.

4. High precision anti-interference water leakage detection sensors are installed in the sealed oil chamber, and thermal sensitive components are embedded in the stator winding to protect the water pump motor.

5. According to user needs, a fully automatic safety protection control cabinet can be equipped to protect the pump from water leakage, electric leakage, overload, and overheating, improving the safety and reliability of the product.

6. The float head can automatically control the start and stop of the pump according to the required liquid level changes, without the need for special supervision, making it extremely convenient to use.

7. A dual rail automatic coupling installation system can be equipped according to user needs, which brings great convenience to installation and maintenance, and people do not have to enter the sewage pit for this.

8. Can be used within the full head range while ensuring that the motor does not overload.

9. There are two different installation methods, fixed automatic coupling installation system and mobile free installation system.

Explosion proof submersible pump usage conditions:

1. The temperature of the medium should not exceed 60 ℃, the density of the medium should be 1-1.3kg/dm3, and the pH value should be within the range of 5-9.

2. For pumps without an internal self circulating cooling system, the exposed liquid level of the motor part should not exceed 1/2.

3. The main component material of this pump is cast iron, so it cannot be used for pumping highly corrosive liquids. If the conveying medium is corrosive, please choose a stainless steel submersible pump. If a flameproof submersible pump is also required, a stainless steel flameproof submersible pump must be selected. Explosion proof submersible pumps are strictly prohibited from transporting flammable and explosive liquids or oils!

QWB explosion-proof submersible sewage pump structure:

1	pump body	2	Wear resistant and passivation resistant impeller, serrated cutting seat	3	油室	4	mechanical seal	5	Oil water probe	6	bearing	7	Motor components
8	motor housing	9	signal line	10	cable	11	Motor cover	12	Float switch	13	base

Performance parameter table of QWB explosion-proof sewage pump

model	caliber mm	traffic m3/h	head m	power KW	speed r/min	efficiency %
QWB25-8-22-1.1	25	8	22	1.1	2825	38.5
QWB32-12-15-1.1	32	12	15	1.1	2825	40
QWB40-15-15-1.5	40	15	15	1.5	2840	45.1
QWB40-15-30-2.2	40	15	30	2.2	2840	48
QWB50-20-7-0.75	50	20	7	0.75	1390	54
QWB50-10-10-0.75	50	10	10	0.75	1390	56
QWB50-20-15-1.5	50	20	15	1.5	2840	55
QWB50-15-25-2.2	50	15	25	2.2	2840	56
QWB50-18-30-3	50	18	30	3	2880	58
QWB50-25-32-5.5	50	25	32	5.5	2900	53
QWB50-20-40-7.5	50	20	40	7.5	2900	55
QWB65-25-15-2.2	65	25	15	2.2	2840	52
QWB65-37-13-3	65	37	13	3	2880	55
QWB65-25-30-4	65	25	30	4	2890	58
QWB65-30-40-7.5	65	30	40	7.5	2900	56
QWB65-35-50-11	65	35	50	11	2930	60
QWB65-35-60-15	65	35	60	15	2930	63
QWB80-40-7-2.2	80	40	7	2.2	1420	52
QWB80-43-13-3	80	43	13	3	2880	50
QWB80-40-15-4	80	40	15	4	2890	57
QWB80-65-25-7.5	80	65	25	7.5	2900	56
QWB100-80-10-4	100	80	10	4	1440	62
QWB100-110-10-5.5	100	110	10	5.5	1440	66
QWB100-100-15-7.5	100	100	15	7.5	1440	67
QWB100-85-20-7.5	100	85	20	7.5	1440	68
QWB100-100-25-11	100	100	25	11	1460	65
QWB100-100-30-15	100	100	30	15	1460	66
QWB100-100-35-18.5	100	100	35	18.5	1470	65
QWB125-130-15-11	125	130	15	11	1460	62
QWB125-130-20-15	125	130	20	15	1460	63
QWB150-145-9-7.5	150	145	9	7.5	1440	63
QWB150-180-15-15	150	180	15	15	1460	65
QWB150-180-20-18.5	150	180	20	18.5	1470	75
QWB150-180-25-22	150	180	25	22	1470	76
QWB150-130-30-22	150	130	30	22	1470	75
QWB150-180-30-30	150	180	30	30	1470	73
QWB150-200-30-37	150	200	30	37	1480	70
QWB200-300-7-11	200	300	7	11	970	73
QWB200-250-11-15	200	250	11	15	970	74
QWB200-400-10-22	200	400	10	22	1470	76
QWB200-400-13-30	200	400	13	30	1470	73
QWB200-250-15-18.5	200	250	15	18.5	1470	72
QWB200-300-15-22	200	300	15	22	1470	73
QWB200-250-22-30	200	250	22	30	1470	71
QWB200-350-25-37	200	350	25	37	1980	75
QWB200-400-30-45	200	400	30	45	1480	70
QWB250-600-9-30	250	600	9	30	980	74
QWB250-600-12-37	250	600	12	37	1480	78
QWB250-600-15-45	250	600	15	45	1480	75
QWB250-600-20-55	250	600	20	55	1480	73
QWB250-600-25-75	250	600	25	75	1480	73
QWB250-800-12-45	250	800	12	45	980	76
QWB300-500-15-45	300	500	15	45	980	70
QWB300-800-15-55	300	800	15	55	980	73
QWB300-600-20-55	300	600	20	55	980	75
QWB300-800-20-75	300	800	20	75	980	78
QWB300-950-20-90	300	950	20	90	980	80
QWB300-1000-25-110	300	1000	25	110	980	82
QWB350-1100-10-55	350	1100	10	55	980	84.5
QWB350-1500-15-90	350	1500	15	90	980	82.5
QWB350-1200-18-90	350	1200	18	90	980	83.1
QWB350-1100-28-132	350	1100	28	132	740	83.2
QWB350-1000-36-160	350	1000	36	160	740	78.5
QWB350-1500-10-75	400	1500	10	75	980	82.1
QWB400-2000-15-132	400	2000	15	132	740	85.5
QWB400-1700-22-160	400	1700	22	160	740	82.1
QWB400-1500-26-160	400	1500	26	160	740	83.5
QWB400-1700-30-200	400	1700	30	200	740	83.5
QWB400-1800-32-250	400	1800	32	250	740	82.1