2BEC liquid ring vacuum pump

Application and characteristics: 2BEC series liquid ring vacuum pump is developed by our company in combination with the advanced technology of German imported products. The product is not only efficient and energy-saving, but also very suitable for long-term and continuous operation.

The working conditions of the liquid ring vacuum pump are often very severe when it is operated in the rough vacuum. The design of 2BEC series liquid ring vacuum pump has fully considered that it must be able to pump out all kinds of gases. It is widely used in papermaking, coal mine, power plant, vacuum filtration, chemical industry, petrochemical industry, food processing and other industries.

2BEC liquid ring vacuum pump can be used with a variety of driving devices, such as belt drive, gearbox, synchronous motor, frequency converter, etc. In addition, in order to save space, a series operation mode driven by one motor can be adopted, and at most four vacuum pumps can be operated in series at the same time.

When equipped with intermediate diaphragm, the left and right parts of 2BEC liquid ring vacuum pump can operate under different vacuum degrees. As long as the suction pressure difference between the two parts is less than 80kPa, a 2BEC liquid ring vacuum pump can be used as two independent vacuum pumps, which further improves the operation flexibility of 2BEC liquid ring vacuum pump.

2BEC liquid ring vacuum pump and compressor structural features:

There are large inspection ports on both sides of the pump cover, through which the clearance, corrosion and scale can be checked.

The suction and exhaust flanges at the top and side of the 2BEC liquid ring vacuum pump are reserved at the same time during manufacturing, and they have the same caliber, so the field installation is more flexible and convenient. The bearings are all imported bearings, which ensure the accurate positioning of the impeller of 2BEC liquid ring vacuum pump and the high stability during operation.

The impeller is made of nodular cast iron or welded with steel plate and stainless steel plate, which fully guarantees the stability of 2BEC vacuum pump impeller under various adverse conditions, and greatly improves the service life of 2BEC liquid ring vacuum pump.

The pump body is made of steel plate or stainless steel plate, which improves the service life of 2BEC liquid ring vacuum pump. As the most easily damaged part, the sleeve of 2BEC liquid ring vacuum pump is made of stainless steel, which is 5 times longer than the ordinary material. The belt pulley (belt drive) adopts the standard high-precision cone sleeve belt pulley, which is reliable in operation, long in service life and easy to disassemble.

The unique top mounted gas water separator saves space and effectively reduces noise. All castings are made of resin sand with good surface quality. No greasing is needed on the surface of the casting, so that the heat dissipation effect of 2BEC liquid ring vacuum pump is the best. All mechanical seals (options) are imported parts to fully ensure that 2BEC series liquid ring vacuum pump has no leakage during long-term operation.

2BEC liquid ring vacuum pump performance:

Model	speed (transmission mode) r/min	Maximum shaft power KW	Motor power KW	Maximum extraction rate		Ultimate vacuum mbar	Pump head weight Including upper separator KG
				m3/h	m3/min
2BEC 400	340(belt / reducer)	82	110	4850	80.8	160	3275
	390(belt / reducer)	95	110	5650	94.2
	440(belt / reducer)	115	132	6250	104.2
	490(belt / reducer)	134	160	6900	115.0
	530(belt / reducer)	148	185	7470	124.5
	570(belt / reducer)	167	200	8000	133.3
	610(belt / reducer)	189	220	8600	143.3
2BEC 420	340(belt / reducer)	108	132	6650	110.8	160	3720
	390(belt / reducer)	132	160	7650	127.5
	440(belt / reducer)	157	185	8550	142.5
	490(belt / reducer)	180	200	9400	156.6
	530(belt / reducer)	204	220	10150	169.2
	570(belt / reducer)	229	250	10700	178.3
	610(belt / reducer)	260	315	11600	193.3
2BEC 500	260(reducer)	142	160	8700	145.0	160	6110
	300(reducer)	171	200	10150	169.2
	340(reducer)	203	250	11400	190.0
	380(reducer)	238	280	12700	211.7
	420(reducer)	277	315	13800	230.0
	470(reducer)	338	400	1550	258.3
2BEC 520	260(reducer)	172	200	10700	178.3	160	6740
	300(reducer)	210	250	12300	205.0
	340(reducer)	245	280	14000	233.3
	380(reducer)	288	315	15400	256.7
	420(reducer)	337	400	16800	280.0
	470(reducer)	412	500	18700	311.7
2BEC 600	230(reducer)	205	250	12700	211.7	160	9100
	260(reducer)	243	280	14400	240.0
	290(reducer)	285	315	16000	266.7
	320(reducer)	322	355	17500	291.7
	350(reducer)	365	450	19000	316.7
	400(reducer)	465	560	21600	360.0
2BEC 620	230(reducer)	250	280	15600	260.0	160	10700
	260(reducer)	300	355	17700	295.0
	290(reducer)	340	400	19500	325.0
	320(reducer)	390	450	21300	355.0
	350(reducer)	450	500	23200	386.7
	400(reducer)	570	630	26200	436.7
2BEC 670	210(reducer)	280	315	18300	305	160	12700
	240(reducer)	350	400	20400	340
	270(reducer)	415	45	23160	386
	300(reducer)	465	560	25500	425
	320(reducer)	523	630	27000	450
	330(reducer)	545	630	27720	462
	370(reducer)	670	800	30960	516
2BEC 720	190(reducer)	345	400	21900	365	160	15700
	210(reducer)	395	450	24300	405
	240(reducer)	475	560	27480	458
	270(reducer)	550	630	30540	509
	300(reducer)	642	710	33780	560
	340(reducer)	795	900	38100	635

Note: 1. The motor voltage is determined according to the motor power and the user’s power consumption.

2. The speed of the above vacuum pump is the reference speed, and the actual speed is determined according to the transmission mode and customer requirements.

3. 2BEC 400 / 420 belt drive optional speed: 327 / 349 / 393 / 446 / 475 / 498 / 527rpm.

4. Belt drive is not recommended for vacuum pumps above 2BEC 500.

5. The transmission installation size of reducer shall be determined after the speed and reducer manufacturer are determined.

6. The pumping rate listed in the above table is the maximum pumping rate of the pump. The actual pumping rate varies with the suction pressure. Please refer to the “performance curve” for selection.

7. Note: the water temperature of 2BEC liquid ring vacuum pump has a great influence on its performance, and the performance curves of the liquid ring vacuum pump are all measured under the water temperature of 15 ℃, so the pumping rate of the liquid ring vacuum pump should be corrected when the liquid ring vacuum pump is actually selected.

Water consumption of 2BEC series water ring vacuum pump (m3 / h) deviation ± 20%

Model suction pressure (mbar)	200	250	300	350	400	450	500	550	600	650	700	750	800
2BEC 400	9.5	9.9	9.9	9.5	9.0	8.7	7.9	7.5	6.6	6.0	5.3	4.7	4.2
2BEC 420	13.0	13.5	13.5	12.9	12.3	11.5	10.7	9.7	9.0	8.1	7.3	6.4	5.8
2BEC 500	17.6	18.3	18.3	17.2	16.6	15.4	14.4	13.2	12.1	11.0	9.9	8.9	7.8
2BEC 520	21.5	22.2	22.2	21.2	20.2	18.9	17.6	16.1	14.8	13.4	12.0	10.7	9.5
2BEC 600	24.6	25.4	25.4	24.2	23.0	21.5	20.1	18.4	16.9	15.3	13.7	12.2	10.9
2BEC 620	30.0	30.9	30.9	29.3	28.0	26.1	24.4	22.3	20.5	18.6	16.7	14.9	13.2
2BEC 670	34.6	35.5	36.4	34.6	33.0	30.7	28.7	26.3	24.1	21.8	19.7	17.6	15.5
2BEC 720	41.3	42.2	43.5	41.4	39.4	36.7	34.3	31.5	28.8	26.2	23.7	21.1	18.6

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