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SZB water ring vacuum pump

Extraction rate: 4~8L/s Vacuum degree: -0.08MPa Motor power: 1.5kw-2.2kwSZB water ring vacuum pump is widely used in industries such as machinery, pet

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SZB water ring vacuum pump

product overview

SZB type vacuum pump is a suspended wall water ring vacuum pump, which can be used to suction air or other non corrosive, insoluble, and solid particle free gases, with a low suction pressure of -0.086MPa. Widely used in industries such as machinery, petroleum, chemical, pharmaceutical, food, and other fields, suitable for large-scale water pump water intake.

SZB water ring vacuum pump (performance parameters):

Model	Exhaust volume Q		Millimeter Hg (mmHG)	Large vacuum degree	RPM (revolutions per minute)	Motor power (kw)	caliber		Pump weight (KG)
	m3/h	L/S					caliber
	m3/h	L/S					advance	go out
SZB-4	19.8	5.5	440	80%	1450	1.5	ZG1″	ZG1″	42
	14.4	4	520
	7.2	2	600
	0	0	650
SZB-8	38.2	10.6	440	80%	1450	2.2	ZG1″	ZG1″	45
	28.8	8	520
	14.4	4	600
	0	0	650

Note:
1. The suction and exhaust volume of vacuum degree from 40% to 90% or pressure from 0.05MPa to 0.15MPa varies with the size of the water supply, the gap size between the impeller and the side cover, and the gap size between the impeller and the side cover. Especially when the flow rate is small, if the adjustment is not accurate, it is more likely to cause a smaller deviation
2. The values in the table are obtained under the following conditions: ① Water temperature of 15 ℃; ② Air temperature is 20 ℃; ③ Gas relative temperature 70%; ④ Atmospheric pressure 0.1013MPa
3. The performance deviation within the table shall not exceed 5%

SZB water ring typevacuum pump(Installation size):

Installation instructions

The equipment must be installed according to Figure 3

When a vacuum pump is used as a water pump for water intake, its installation position should be more spacious from the water pump to facilitate maintenance of the water pump and vacuum pump.

2. There should be no air leakage in the suction pipeline of the vacuum pump. The foundation dimensions shall be constructed based on installation drawings or physical measurements.

3. The vacuum pump shaft and motor shaft must be kept horizontal, and there should be no misalignment (see Figure 4 for details). The foundation must be solid and reliable. After pouring cement, let it dry for 48 hours, recheck the installation for any changes, and then tighten the foot bolts without any looseness.

If it is necessary to install a steam water separator, please refer to Figure 5.
Maintenance instructions

1. Before starting the vacuum pump, it is necessary to check whether the rotation direction of the motor matches that of the pump. After starting the vacuum pump, check whether the packing is properly compressed (the packing should not be too tight, normal compression of the packing can cause water droplets to leak out of the pump) and whether the bearing operation and lubrication are normal.

2. After starting the vacuum pump, pour cooling water into the cooling pipe (screw hole installed on the side of the pump body) (16) on the pump. If there is a steam water separator, it can be injected from the steam water separator. The size of the water supply has an impact on the vacuum pump, pumping volume, and power consumption of the pump. Therefore, the size of the water supply pipe should be strictly controlled within the specified range to maintain the pressure Mpa or so is suitable, so valves should be installed on the water supply pipeline to adjust the measurement size of the water supply.

3. When the vacuum pump is running normally, it is necessary to check for vibration, listen carefully for any noise inside the pump, and measure the temperature of the packing box and bearings (the normal bearing temperature should not be higher than the ambient temperature by 35 ℃, but the working temperature should not exceed 70 ℃). If the temperature is too high, the machine should be stopped immediately to check the cause.

4. When a vacuum pump is used as a water pump for water intake, it sucks out all the air inside the pump during operation until the water inside the pump is sucked out. Then, the pump is started, and after the pump is working normally, the vacuum pump is stopped and the valve in the suction pipeline is closed.

5. The vacuum pump must be stopped in the following order.

1) Close the gate valve on the intake pipeline.

2) Close the gate valve on the water supply pipeline. It is not advisable to stop the pump immediately after stopping the water supply. The pump should continue to run for 1-2 minutes to discharge some working fluid.

3) Turn off the electric motor.

4) If the parking time exceeds one day, the screw plug at the bottom of the pump body must be opened to drain the water inside the pump body.

6. When the pump is used under the following conditions, auxiliary equipment should be installed.

1) Dust must be removed from the air or gas, and a filter must be installed on the intake pipe.

2) When the extracted gas contains a large amount of steam, a condenser must be installed in front of the intake pipe.

3) When extracting corrosive gases, neutralization must be carried out before entering the pump.

4) The temperature of the extracted gas or air exceeds 35 ℃, and it must pass through a cooling device before entering the pump to ensure that its temperature does not exceed 35 ℃.

5) When the extracted gas or air contains a large amount of liquid, a separator must be installed before the inlet pipe of the pump.

6) The starting current of the pump often exceeds the rated current of the motor by several times, and a starting switch must be used.

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