Overview of CQB type magnetic drive pump

The CQB type magnetic drive pump is a new type of completely leak free and corrosion-resistant pump developed by the national joint design team of magnetic pumps. Its technical and economic indicators are comparable to those of similar foreign products in the late 1980s, and it is a supplement and improvement to the CQ type pump. The main features of this pump are that the overcurrent part is made of all stainless steel material, which has good corrosion resistance to organic acids, organic compounds, alkalis, neutral solutions, and various gases. The double spiral groove carbon graphite bearings and hard alloy shaft sleeves have strong wear resistance, ensuring the service life of the product and making it an ideal pump for leak free transportation of corrosive media. The ideal pump type for leak free transportation of corrosive media, optimized by the national magnetic pump joint design, can directly replace the IH type chemical process pump.

Scope of application of CQB type magnetic drive pump

The CQB series magnetic pump is widely used in industries such as petroleum, chemical, metallurgical, pharmaceutical, electroplating, and environmental protection. It can transport flammable, explosive, highly toxic, and valuable liquids below 100 ℃. Adopting the principle of magnetic transmission, it can transport corrosive media without leakage. Flow rate: 3.2-100m3/h Head: 20-80m Power: 0.75-75KW

The significance of CQB type magnetic drive pump model

Performance parameters of CQB type magnetic drive pump

model	Flow rate (m3/h)	Head (m)	Speed (r/min)	Power (kw)
CQB32-20-125	3.2	20		1.1
CQB32-20-160		32		1.5
CQB40-25-105	6.3	12.5		1.1
CQB40-25-125		20		2.2
CQB40-25-160		32		3
CQB40-25-200		50		5.5
CQB50-40-85	12.5	8		1.1
CQB50-32-105		12.5		1.5
CQB50-32-125		20		3
CQB50-32-160		32		4
CQB50-32-200		50		7.5
CQB50-32-250		80		18.5
CQB65-50-125	25	20	2900	4
CQB65-50-160		32		7.5
CQB65-40-200		50		15
CQB65-40-250		80		22
CQB80-65-125	50	20		7.5
CQB80-65-160		32		15
CQB80-50-200		50		22
CQB80-50-250		80		37
CQB100-80-125	100	20		15
CQB100-80-160		32		22
CQB100-65-200		50		37
CQB100-65-250		80		55
CQB150-150-200	200	50		55
CQB200-200-400	400	32	1450	75

Structural diagram of CQB type magnetic drive pump

1	Pump body	2	Impeller	3	Bearing body	4	Thrust ring	5	Isolation sleeve	6	Shaft sleeve	7	Pump shaft
8	Bearing	9	Internal magnetic steel assembly	10	External magnetic steel assembly	11	Connecting frame	12	base	13	electrical machinery

Installation dimensions of CQB type magnetic drive pump

model	A	AD	B	L	L1	H1	H2	a	A1	A2	A3	H	H3	H4	L2	L3	L4	L5	L6	h	n-d
CQB32-20-125	125	150	100	458	133	120	90	65
CQB32-20-160	140	155	100	483	143	160	90	65
CQB40-25-105	125	150	100	458	133	120	90	65
CQB40-25-125	140	155	125	508	143	160	112	65
CQB40-25-160	160	180	140	706	230	160	112	80	300	330	360	197	357	342	263	40	120	320	560	75	4-ф17
CQB40-25-200	261	210	140	821	275	160	132	80	350	380	410	232	392	415	329	87	160	325	645	50	4-ф22
CQB50-40-85	125	150	100	458	133	120	90	80
CQB50-32-105	140	155	125	508	143	160	112	80
CQB50-32-125	160	180	140	706	234	160	112	80	300	330	360	197	337	342	263	40	120	320	560	75	4-ф17
CQB50-32-160	190	190	140	800	290	160	112	80	300	330	360	217	377	370	344	43	120	415	655	100	4-ф17
CQB50-32-200	216	210	140	817	282	180	132	80	350	380	410	245	425	428	325	43	120	465	705	80	4-ф22
CQB50-32-250	254	255	210	987	337	225	160	100	380	410	440	300	525	525	397	55	150	550	850	80	4-ф22
CQB65-50-125	216	210	140	836	290	160	132	80	350	380	410	197	337	350	344	40	120	410	650	75	4-ф17
CQB65-50-160	216	210	140	836	290	160	132	80	350	380	410	217	377	400	344	40	120	410	650	75	4-ф17
CQB65-40-200	254	255	210	962	324	180	160	100	380	410	440	260	440	485	372	54	150	565	865	110	4-ф22
CQB65-40-250	279	285	241	1032	324	225	180	100	380	410	440	300	525	550	385	54	150	565	865	110	4-ф22
CQB80-65-125	216	210	140	817	282	160	132	81	350	380	410	217	377	457	325	43	120	465	705	80	4-ф17
CQB80-65-160	254	255	210	1013	350	180	160	100	380	410	440	260	440	485	423	98	210	395	815	90	4-ф22
CQB80-50-200	254	255	254	1086	380	200	160	100	380	410	440	260	460	485	451	50	210	450	870	90	4-ф22
CQB80-50-250	318	310	305	1251	390	225	200	125	470	500	530	320	545	595	476	127	210	490	910	110	4-ф22
CQB100-80-125	254	255	210	958	308	180	160	100	380	410	440	260	440	485	368	127	210	400	820	80	4-ф17
CQB100-80-160	254	255	254	1003	308	200	160	100	380	410	440	280	480	505	368	127	210	400	820	80	4-ф22
CQB100-65-200	318	310	305	1262	412	225	180	100	470	500	530	320	545	595	512	141	250	560	1060	130	4-ф28
CQB100-65-250	318	310	305	1290	412	250	200	125	470	500	530	340	590	645	512	141	250	560	1060	130	4-ф28

Installation and use of CQB type magnetic drive pump

1. The CQB type magnetic drive pump should be installed horizontally and not vertically. The plastic pump body should not bear the weight of the pipeline. For special requirements for vertical installation, the motor must face upwards.

2. When the suction liquid level is higher than the pump axis line, open the suction pipeline valve before starting. If the suction liquid level is lower than the pump axis line, the pipeline needs to be equipped with a bottom valve.

3. Before using the CQB type magnetic drive pump, it should be checked that the motor fan blades rotate flexibly, without jamming or abnormal noise, and all fasteners should be tightened.

4. Check if the rotation direction of the motor is consistent with the direction mark of the magnetic pump.

5. After the motor starts, slowly open the discharge valve and adjust it to the desired opening after the pump enters normal operation.

6. Before the CQB type magnetic drive pump stops working, the discharge valve should be closed first, and then the suction pipe valve should be closed.

Precautions for using CQB type magnetic drive pump

1. Due to the fact that the cooling and lubrication of magnetic pump bearings rely on the medium being transported, it is absolutely forbidden to operate them in idle mode, while also avoiding the possibility of spatiotemporal rotation caused by power outages and restarts during operation.

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

3. The CQB type magnetic drive pump should have an ambient temperature of less than 40 ℃ during use, and the motor temperature rise should not exceed 75 ℃.

4. The conveyed medium and its temperature should be within the allowable range of the pump material (see attached table for details). The operating temperature of engineering plastic pumps is less than 60 ℃, the operating temperature of metal pumps is less than 100 ℃, the conveying suction pressure is not more than 0.2mpa, the high working pressure is 1.6mpa, the density is not more than 1600kg/m3, and the particle size is not more than 30 × 10-6m2/s, which is a liquid without hard particles and fibers.

5. For media that are prone to precipitation and crystallization during transportation, they should be cleaned promptly after use to drain the accumulated liquid in the pump.

6. After 100 hours of operation of the magnetic drive pump, the wear of the bearings and end face moving rings should be disassembled and inspected, and vulnerable parts that are no longer suitable for use should be replaced.

7. The internal and external magnetic couplings of CQB type magnetic drive pump are made of high-performance permanent magnet materials, which may pose potential hazards to the following components. Please keep the following components at a distance from this series of pumps. Such as pacemakers, credit cards and other magnetic cards, calculators, computer disks, watches, etc.

Faults and troubleshooting methods

failure mode	Cause of occurrence	Troubleshooting
The pump is not producing water	1. Reverse rotation of water pump 2. Air leakage in the inlet pipeline 3. Insufficient water storage in the pump chamber 4. The voltage is too high, causing the coupling to slip during operation 5. The suction distance is too high 6. The valve is not open	1. Change the wiring of the electric joke 2. Social distancing leakage 3. Increase water storage capacity 4. Adjust the voltage 5. Lower the installation position of the pump 6. Correction or update? valve
Insufficient traffic	1. The suction pipe diameter is too small or clogged 2. Impeller channel blockage 3. High head 4. Insufficient rotational speed	1. Replace or clean the water pipe 2. Clean the impeller 3. Turn up the outlet valve 4. Restore the rated speed
Low head	1. Excessive traffic 2. The speed is too low	1. Turn down the outlet valve 2. Restore the rated speed
too much noise	1. Severe wear of the shaft 2. Severe wear of bearings 3. External magnetic steel or? Magnetic steel in contact with isolation sleeve 4. Grinding of sealing ring and impeller	1. Replace the pump shaft 2. Replace the bearings 3. Dismantle the pump head and reassemble it 4. Replace the thrust ring and sealing ring
Leakage of liquid	O-ring damaged	Replace the O-ring seal