CB-D self-priming magnetic pump is a type of centrifugal pump that uses a magnetic coupling to drive the impeller. It is widely used in industries that require the pumping of corrosive, flammable, and explosive liquids. In this article, we will discuss the classification and features of the CB-D self-priming magnetic pump.

Classification

CB-D self-priming magnetic pump can be classified according to the material of the pump body and the motor. The pump body can be made of materials such as cast iron, stainless steel, and fluoroplastic. The motor can be classified into standard and explosion-proof types.

Features

Self-priming

CB-D self-priming magnetic pump can automatically suck in liquid and discharge gas, with a self-priming height of up to 4 meters.

Magnetic drive

The magnetic coupling can transmit power without direct contact between the motor and the impeller, effectively preventing leakage and ensuring the safety of the operator and the environment.

Corrosion resistance

CB-D self-priming magnetic pump is made of corrosion-resistant materials such as stainless steel and fluoroplastic, which can handle a variety of corrosive liquids.

Easy maintenance

The structure of the CB-D self-priming magnetic pump is simple, with few parts and easy maintenance. The pump can be disassembled and assembled quickly without the need for special tools.

Wide application

CB-D self-priming magnetic pump can be used in industries such as chemical, pharmaceutical, food, and environmental protection. It is suitable for the transfer of various corrosive, volatile, and flammable liquids.

Conclusion

CB-D self-priming magnetic pump is a reliable and efficient pump that can handle various corrosive liquids. Its magnetic drive design and self-priming feature make it an ideal choice for industries that require safety, reliability, and convenience.

Specification parameter

Model	Caliber(mm)		Flow (m3/h)	Head (m)	Motor power (kW)	Voltage	Material
Model	Inlet	Outlet	Flow (m3/h)	Head (m)	Motor power (kW)	(V)
CB-D20-12-100	20	12	3	12	0.37	220/380	Stainless steel
CB-D25-20-115	25	20	6.6	15	1.1	380
CB-D32-25-115	32	25	6.6	15	1.1	380
CB-D32-25-145	32	25	6.6	25	1.1	380
CB-D40-32-132	40	32	10.8	20	2.2	380
CB-D40-32-160	40	32	12	32	4	380
CB-D50-40-145	50	40	14.4	25	4	380
CB-D50-40-160	50	40	13.2	32	4	380
CB-D50-40-200	50	40	7.8	50	5.5	380
CB-D65-50-145	65	50	16.8	25	5.5	380
CB-D65-50-160	65	50	27	32	7.5	380
CB-D80-65-125	80	65	50	20	7.5	380
CB-D80-65-160	80	65	50	32	15	380
CB-D80-65-200	80	65	50	50	18.5	380
Note: Each model can be configured with explosion-proof motor.

product-489-499

1	Pump body	2	Impeller	3	Pump shaft	4	Bearing body
5	Reaction ring	6	Sealing ring	7	Bearing	8	Assembly of inner magnet steel
9	Spacer sleeve	10	Assembly of outer magnet steel	11	Linkup stand

Precautions

Since the cooling and lubrication of the bearings of the CB-D self-priming magnetic drive pump relies on the medium, idling is absolutely prohibited, which avoiding spatiotemporal planting operation caused by restarting after a power failure in the middle of work.

If the conveyed medium contains solid particles, a filter should be added to the pump inlet: if it contains ferromagnetic particles, a magnetic filter should be added.

The ambient temperature of the pump during use should be less than 40℃, and the temperature rise of the motor should not exceed 75℃.esting equipment.

The transported medium and its temperature should be within the allowable range of the pump material (see the attached table for details). The use temperature of the metal pump is <100℃; the specific gravity of the transported medium is less than 1.3; when the specific gravity of the medium is <1.3, it will affect technical performance.

For the medium shield, it is easy to precipitate and crystallize as the conveying liquid, it should be cleaned in time after draining the liquid accumulation in the pump.

After the CB-D self-priming magnetic pump has been running for 500 hours, the wear condition of the bearing and the end face moving ring should be disassembled and inspected. If the gap between the bearing and the shaft sleeve is greater than 0.5~1mm, when the impeller moves 1.5~2mm in the axial direction, the bearing and axial moving ring should be replaced.

Corrosion resistance of main pump materials (for reference) Attached file

Medium name	Concentration (%)	Stainless steel		Concentration (%)		Pottery and ceramics
		25℃	50℃		25℃		80℃
Sulfuric acid	〈5	√	×			v		v
Nitric acid	70	v	√			v		v
Hydrochloric acid		×				v		v
Hydrofluoric acid		×		0~100		×
Acetic acid	〈20	√	√			v		v
Sodium hydroxide	70	√	√			○		×
Potassium dichromate	40~60	v	v	10~20		v		v
Bromine water		〇				v		v
Ethyl alcohol		v	√			v		v
Acetone		v	v			v
Tetrachloroethane	50	v	v			v		v
Freon 22		v				v		v
Bleaching liquid	CL12%	×				v		v
Electroplate liquid						v		v
Photographic solution		v				v		v

Symbol description: v-excellent, √ -good, o-available, but corrosion is obvious, × -corrosion is serious, not applicable.

Troubleshooting

Trouble	Caused	Exclusion method
The pump does not discharge water	1. The water pump reverses 2. Air leakage of inlet pipe 3. Insufficient water storage in pump chamber 4. The voltage is too high and the coupling slips when starting 5. The suction head is too high 6. Valve not open	1. Change the motor wiring 2. Prevent air leakage 3. Increase water storage capacity 4. Adjust the voltage 5. Lower the pump installation position 6. Correct or change the valve
Insufficient flow	1. The suction pipe diameter is too small or clogged 2. The passage of impeller is blocked 3. The lift is too high 4. The speed is not enough	1. Replace or clean the water inlet pipe 2. Cleaning wheel 3. Open the outlet valve 4. Restore the rated speed
Low head of delivery	1. The flow is too large 2. The speed is too low	1. Turn down the water outlet valve 2. Restore the rated speed
Too much noise	1. The pump shaft is seriously worn 2. The bearing is seriously worn 3. The outer magnetic steel or the inner magnetic steel contacts with the isolation sleeve 4. Friction between seal ring and impeller 5. The rolling bearing in the cooling box is worn	1. Replace the pump shaft 2. Replace the bearing 3. Remove the pump head and reassemble it 4. Replace thrust ring and sealing ring 5. Replace the rolling bearing
Leakage	1. O type sealing ring is damaged	1. Replace O-type sealing ring