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Zibo Jieyou Pump Industry Co., Ltd

E-mail
jypump@yeah.net
Phone
15589352061
Address
No. 19-1, Dahaiyan Section, Zhangbo Road, Boshan District, Zibo City, Shandong Province

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2SK type water ring vacuum pump

NegotiableUpdate on 03/24

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Nature of the Manufacturer: Producers

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Overview

2SK type water ring vacuum pump

Product Details

texture of material:	stainless steel
Type:	vacuum pump
Brand:	Jieyou
model:	2SK
Customized processing:	correct

detailed description

1、 Product Description of 2SK Water Ring Vacuum Pump

The 2SK series two-stage water ring vacuum pump and 2SK-P1 series two-stage water ring vacuum pump atmospheric jet pump unit are vacuum pumps and vacuum units developed by our factory according to the industry standard JB/T7255-94 "Water Ring Vacuum Pump and Water Ring Compressor". They have the characteristics of high vacuum degree, large pumping speed in high vacuum range, compact structure, reliable use, and easy installation and disassembly.

The unit consists of a 2SK water ring vacuum pump and a first stage atmospheric jet pump. Users can use the two-stage water ring vacuum pump separately according to their needs.

2SK water ring vacuum pump or unit is used to suck air or other insoluble, solid particle free, non corrosive gases to form a certain degree of vacuum in a closed container. It is suitable for industrial sectors such as textiles, food, metallurgy, and chemical industry for processes such as vacuum evaporation, vacuum concentration, vacuum moisture regain, vacuum drying, and vacuum smelting.

Model Description of 2SK Water Ring Vacuum Pump

2、 Working principle of 2SK water ring vacuum pump

The working principle of the 2SK water ring vacuum pump is shown in Figure 1. The impeller (5) is eccentrically installed inside the pump body (3). When the impeller rotates, water is thrown out in all directions by centrifugal force, forming a rotating water ring (6) between the inner wall of the 2SK water ring vacuum pump body and the impeller. The upper inner surface of the water ring is in contact with the impeller hub. When the impeller rotates clockwise, during the first half of the rotation, the inner surface of the water ring gradually separates from the hub, and the cavity formed between adjacent blades gradually increases. The extracted gas is continuously sucked into the cavity through the pump inlet pipe (4) and the crescent shaped suction hole (7); During the second half of the rotation, the inner surface of the water ring gradually approaches the hub, and the cavity between the two adjacent blades gradually shrinks. The gas is compressed, so the pressure continues to increase. When the pressure increases to greater than the external pressure, the gas is discharged, continuously extracting the gas from the sealed container, forming a certain vacuum.

Indicating the working principle diagram of 2SK water ring vacuum pump

1. Exhaust pipe 2. Air outlet 3. Pump body 4. Inlet pipe 5. Impeller 6. Water ring 7. Suction hole

The atmospheric jet vacuum pump is a type of jet pump, and its working principle is briefly described as follows: due to the action of the 2SK water ring vacuum pump, a certain pre vacuum is formed in the pumped container. When it approaches the limit vacuum of the pump, the atmospheric pump is turned on. At this time, the pressure difference between the external atmosphere (or pressure gas) and the intake pipe is large. Under the action of this pressure difference, the atmosphere (or pressure gas) is rapidly drawn into the suction pipeline, and through the nozzle of the large air pump, the airflow velocity further increases, so the pressure rapidly decreases, resulting in a higher vacuum inside the nozzle (obviously higher than the pump's limit vacuum), and the gas in the pumped system is continued to be sucked into the pump.

3、 Structure Description of 2SK Water Ring Vacuum Pump

1. Rear axle pressure cover 2, shaft 3, bearing frame 4, front and rear end covers 5, short pump body 6, middle wall (B) 7, middle wall (A) 8, tension bolt 9, long pump body 10, connecting pipe 11, adjusting pad 12, oil cup 13, front axle pressure cover 14, packing gland 15, rear cover disc 16, short impeller 17, long impeller 18, pump coupling 19, motor coupling 20, shaft sleeve 21, inlet hole 22, front cover disc

Figure 2 Structure diagram of two-stage water ring pump with pumping capacity of 1.5m3/min (2SK-1.5) or above

The structure of a 2SK water ring vacuum pump with a pumping capacity of 1.5m3/min or more is shown in Figure 2. The long and short impellers 17 and 16 are fixed to shaft 2 with keys, and the middle of the two impellers is positioned with a shaft sleeve 20 and locked with a round nut. This forms the entire rotor part, which is eccentrically installed in the pump body and supported on two single row radial ball bearings. The rotating part is connected to the motor shaft with a coupling 18 to rotate at the same speed as the motor. The long impeller 17, the long pump body 9, and the suction part form a high vacuum stage, while the short pump body 5, the short impeller 16, and the discharge part form a low vacuum stage. The exhaust port of the high vacuum stage is connected to the suction port of the low vacuum stage with a connecting pipe (2SK-1). Without this connecting pipe, it becomes a two-stage series connection, separated by a middle wall (A) 7 and a middle wall (B) 6 between the two stages. The middle wall (A) has an exhaust hole, and the middle wall (B) There is a suction port on it.

1. Rear cover 2. Oil cup 3. Bearing retaining ring 4. Bearing pressure cover 5. Packing cover 6. Bearing frame 7. Exhaust disc 8. Short impeller 9. Short pump body 10. Long pump body 11. Long impeller 12. Suction disc 13. Front cover 14. Water inlet hole 15. Chassis 16. Extended shaft motor

Figure 3 Structure diagram of 2SK-0.4 and 2SK-0.8 two-stage water ring vacuum pumps

The structure of the 2SK-0.4 and 2SK-0.8 two-stage water ring vacuum pumps is shown in Figure 3, and their high and low vacuum stage structures are basically the same as the pump shown in Figure 2 (without connecting pipes). Using a specially designed extended shaft motor, the long and short impellers are fixed to the shaft with keys, but can be floated axially and eccentrically placed inside the long and short pump bodies.

The sealing at both ends of the 2SK water ring vacuum pump adopts oil immersed asbestos packing or mechanical seal.

One end of the high vacuum stage has a water inlet hole, through which supplementary water enters the long pump body of the high vacuum stage. The supplementary water of the low vacuum stage is discharged from the high vacuum stage. (2SK-12, 2SK-20, 2SK-30 low vacuum level makeup water is also supplied from the water supply pipe, but its amount needs to be adjusted through a valve). The high and low vacuum levels are firmly connected together by tightening bolts.

The atmospheric jet pump is composed of an intake pipe, a nozzle, an atmospheric valve body, and a diffuser.

4、 Main performance indicators and technical specifications of 2SK water ring vacuum pump

The technical specifications of 2SK series two-stage water ring vacuum pump and 2SK-P1 series two-stage water ring vacuum pump atmospheric jet pump vacuum unit are shown in Table 1 and Table 2.

Table 1: Technical Specifications of 2SK Series Two stage Water Ring Vacuum Pump

model	Extraction volume m3/min		limiting pressure MPa (mmHg)	Motor Power KW	rotational speed (Conversion/minute) r.p.m	water supply (liters/minute) L/min	Exhaust and suction caliber
model	Maximum gas volume	When the suction pressure is -0.093MPa, it shall not be less than	limiting pressure MPa (mmHg)	Motor Power KW	rotational speed (Conversion/minute) r.p.m	water supply (liters/minute) L/min	Exhaust and suction caliber
2SK-0.4	0.4	0.25	-0.096(-725)	2.2	2840	3~5	G1"
2SK-0.8	0.8	0.5	-0.096(-725)	3	2880	5~8	G1"
2SK-1.5	1.5	0.9	-0.096(-725)	4	1440	10~15	φ40
2SK-3	3	2	-0.097(-730)	7.5	1440	15~20	φ40
2SK-6	6	4	-0.098(-735)	15	1450	25~35	φ70
2SK-12	12	8	-0.098(-735)	22	970	40~50	φ100
2SK-20	20	14	-0.098(-735)	55	740	60~80	φ125
2SK-30	30	20	-0.098(-735)	75	740	70~90	φ125

Table 2: Technical Specifications of 2SK-P1 Series Two Stage Water Ring Pump Atmospheric Jet Pump Unit

model	Extraction volume m3/min			Ultimate pressure MPa (mmHg)	Power KW ?	RPM (revolutions per minute)	Water supply rate L/min
model	When the inspiratory pressure is -0.093MPa (-700mmHg)	When the suction pressure is -0.097MPa (-730mmHg)	When the suction pressure is -0.009MPa (-750mmHg)	Ultimate pressure MPa (mmHg)	Power KW ?	RPM (revolutions per minute)	Water supply rate L/min
2SK-0.4P1	0.28	0.24	0.2	-0.099(-750)	2.2	2840	3~5
2SK-0.8P1	0.56	0.48	0.4	-0.099(-750)	3	2880	5~8
2SK-1.5P1	1.05	0.9	0.75	-0.099(-750)	4	1440	10~15
2SK-3P1	2.1	1.8	1.5	-0.099(-750)	7.5	1440	15~20
2SK-6P1	4.2	3.6	3	-0.099(-750)	15	1450	25~35
2SK-12P1	8.4	7.2	6	-0.099(-750)	22	970	40~50
2SK-20P1	14	12	10	-0.099(-750)	55	740	60~80
2SK-30P1	21	18	15	-0.099(-750)	75	740	70~90

Note: 1. The performance indicators listed in the table refer to the performance indicators under the following specified conditions:

① Atmospheric pressure 0.1013Mpa (760mmHg) ② Inlet water temperature 15 ℃ ③ Inlet air temperature 20 ℃ ④ Relative air humidity 70%.

2. The water supply of the 2SK water ring vacuum pump is the value at a suction pressure of -0.05Mpa (-400mmHg), and can be greater than this value at the ultimate vacuum.

3. The performance tolerance of 2SK water ring vacuum pump is ± 10%.

5、 Equipment installation of 2SK water ring vacuum pump

The installation dimensions of the 2SK series two-stage water ring vacuum pump are shown in Figures 5, 6, 7, and 8.

1. Installation of 2SK water ring vacuum pump:

When the 2SK water ring vacuum pump is delivered to the installation site, if any damage is found or if it is installed 8 months after leaving the factory, it should be disassembled, inspected, and repaired before installation.

Before installation, manually rotate the coupling Lv to confirm if the pump is stuck. The 2SK-0.4 and 2SK-0.8 pumps can be checked by opening the motor cover and rotating the motor fan several times. The foundation of the 2SK water ring vacuum pump should be kept level to ensure that the pump is placed horizontally.

2. Pipeline installation of 2SK water ring vacuum pump:

The flange connection of the 2SK water ring vacuum pump pipeline should be heated to ensure reliable sealing, especially if there is a slight looseness in the intake pipeline of the 2SK water ring vacuum pump, the predetermined vacuum degree cannot be achieved. The intake pipe near the pump must be equipped with a gate valve to be closed before parking, in order to prevent water in the pump from flowing back to the intake pipe or even the sealed container under the pressure of the exhaust pipe. It is recommended to install a vacuum gauge between the intake gate valve and the pump intake to check whether the pump is working properly at any time. A gate valve should also be installed on the water supply pipeline of the 2SK water ring vacuum pump to adjust the water supply to meet the specified requirements.

3. Installation of gas water separator for 2SK water ring vacuum pump:

The 2SK water ring vacuum pump air-water separator is placed on the foundation according to Figure 8. If it is necessary to change the installation position, attention should be paid to the connection pipeline of the separator, which should not be too long, and the transition should not be too fast (the distance between the connection pipeline and the pump inlet should not be more than half a meter, the longest should not be more than 2 meters, and the transition should not be more than three, otherwise the flow loss of water and gas in the pipeline will increase, thus increasing the pressure at the pump exhaust end, reducing the flow rate and vacuum degree, and increasing power consumption.

6、 Starting and stopping of 2SK water ring vacuum pump

（1） Starting of 2SK series water ring vacuum pump: Before starting, especially for pumps that have been parked for a long time, the coupling must be manually rotated several times (2SK-0.4/0.8 can rotate the motor fan) to confirm that the rotor can rotate freely. Before starting 2SK-12, 2SK-20, and 2SK-30, all water in the pump body should be drained before starting.

The starting of 2SK series water ring vacuum pump can be done in the following order:

1. Close the gate valve on the intake pipeline of the 2SK series water ring vacuum pump (user installed, not shown in the picture);

2. Start the motor (pay attention to the forward and reverse rotation of the motor at this time);

3. Open the gate valve on the water supply pipeline and gradually increase the water supply until it meets the specified requirements;

4. When the pump reaches the maximum vacuum, open the gate valve on the intake pipe and the pump starts working normally;

5. Adjust the packing cap so that water drips towards the desired location. When the 2SK series water ring vacuum pump operates under extreme vacuum, if an explosion occurs due to physical effects inside the pump, the power consumption does not increase. If an explosion sound is detected as the power increases, it indicates that the pump has malfunctioned and should be stopped immediately for inspection.

Starting of 2SK-P1 series water ring one large air pump unit:

Firstly, start the two-stage water vacuum pump in the above order. If the large air pump is directly installed on the suction port of the two-stage pump, the atmospheric pump can work on its own. At this time, the time for the unit to reach the maximum vacuum is slightly longer. If the electromagnetic valve is used to open and close the large air pump, and the atmospheric pump is turned on when approaching the limit of the two-stage pump, the unit will start working.

（2） 2SK series water ring vacuum pump parking:

When using the 2SK series water ring vacuum pump alone, the parking should be done in the following order:

1. Close the gate valve on the intake pipeline.

2. Close the gate valve on the water supply pipeline. After stopping the water supply, do not immediately stop the pump. Keep the pump running for 1-2 minutes to discharge some working fluid.

3. Turn off the electric motor.

4. If the 2SK series water ring vacuum pump is stopped for more than one day, the screw plug at the bottom of the pump body must be opened to drain the water completely.

Shutdown of 2SK-P1 series water ring atmospheric pump unit:

1. If the large air pump is directly installed on the inlet flange of the two-stage water ring pump, it can be operated to stop according to the parking sequence of the 2SK vacuum pump.

2. If the air pump is connected to a 2SK vacuum pump through a bypass pipeline and the solenoid valve is opened and closed, the atmospheric pump can be stopped first, and then the two-stage pumps can be stopped.

7、 Maintenance of 2SK water ring vacuum pump

1. The 2SK vacuum pump should regularly tighten the packing. If the packing cannot guarantee the required sealing due to wear, it should be replaced with new packing. The packing should not be pressed too tightly, and normally tightened packing allows water to drip out. But the quantity should not be too much, and oil immersed asbestos rope should be used as filler.

2. The ball bearings of 2SK vacuum pump should have good working conditions, and their working temperature should not be higher than the surrounding temperature by 35 ℃, but the measured temperature value should not exceed 70 ℃. 2/3 of the entire space in the bearing chamber should be filled with butter. For normal working bearings, oil should be added 3-4 times a year, the bearings should be cleaned at least once a year, and all lubricating oil should be replaced.

8、 Disassembly and assembly of 2SK water ring vacuum pump

（1） Dismantling of 2SK vacuum pump:

The disassembly of 2SK vacuum pump is divided into partial disassembly inspection and cleaning, and complete disassembly repair and replacement of parts. Before dismantling, all water in the pump should be drained. When disassembling, various sealing gaskets should be carefully removed. If damage is found, new gaskets of the same thickness and material should be replaced. When disassembling, marks should be made on the parts to ensure correct installation. The disassembly sequence is as follows (see Figures 2 and 3).

1. Firstly, disconnect the 2SK vacuum pump from the system pipeline, separator, motor, and base, take out the pump head, and place it on a flat plate (2SK-0.4, 2SK-0.8 cannot remove the motor)

2. The lower connecting pipe (2SK-0.4, 2SK-0.8, 2SK-1.5 do not have this component).

3. For ease of disassembly, the pump should be placed upright with the drive end facing downwards as much as possible.

4. Remove the rear bearing covers 1 (Figure 2) and 4 (Figure 3), and remove the bearing frames 3 (Figure 2) and 6 (Figure 3) along with the bearings.

5. Remove all tightening bolts and remove the non drive end cover along with the disc fixed to the end cover.

6. Remove short pump bodies 5 (Figure 2), 9 (Figure 3), short impeller back cap (Figure 3 does not have this part), short impellers 16 (Figure 2), 8 (Figure 3), middle walls 6, 7 (Figure 3 does not have this part), shaft sleeve 20 (Figure 3 does not have this part), long pump bodies 9 (Figure 2), 10 (Figure 3), long impeller 11 (Figure 3), (In Figure 2, if long impeller 17 and shaft 2 do not need to be replaced, please do not remove the long impeller from the shaft).

7. Lie down the remaining part. In Figure 2, remove pump coupling 18, front axle pressure cover 13, front axle support frame 3, and front end cover 4. In Figure 3, simply remove front cover 13

At this point, the disassembly is all over.

During disassembly, special attention should be paid to whether the gap between the end faces of the two impellers and the pump cover and middle wall is appropriate, and the thickness of the cushion should be appropriately increased or decreased according to its size.

（2） 2SK vacuum pump assembly:

Before assembling the 2SK vacuum pump, the parts should be cleaned and oil should be applied to the mating surfaces and threads. Old oil should be removed from the ball bearings and bearing seats, and new oil should be added. Scrapped parts should be replaced. A new pad with the same thickness and material should be manufactured, and the damaged old pad should be replaced.

The assembly sequence of 2SK vacuum pump is opposite to the disassembly sequence, but the following points should be noted:

1. In Figure 2, the bearing on the drive end is a positioning bearing, which must be fixed properly and adjusted with adjusting pad 11 to adjust the gap between the long impeller 17 and the front end cover disc.

2. Pay attention to the uniform tightening force of the long tension bolt.

3. The key to assembling a two-stage water ring pump is how to ensure that the clearance between the two ends of the impeller meets the specified requirements. If the gap is too large, too small, or uneven on both sides, it will have a significant impact on the performance of the pump, especially the pumping volume. It may even cause malfunctions such as blockage or blade breakage due to the collision between adjacent parts on both sides of the impeller. Therefore, it must be highly valued during assembly.

4. The clearance between the two end faces of the impeller should be:

2SK-1.5, 2SK-3, and 2SK-6 have a range of 0.13-0.18, 2SK-12 has a range of 0.15-0.25, and 2SK-20 and 2SK-30 have a range of 0.20-0.30

9、 Equipment Description of 2SK Water Ring Vacuum Pump

The installation and external dimensions of 2SK water ring vacuum pump and 2SK-P1 series water ring atmospheric jet pump unit are shown in Figures 5, 6, 7, and 8.

When the two-stage pump is working, gas enters the pump through the pipeline and valve, and then the gas water mixture is discharged into the gas water separator by the pump. Part of the water is replenished by the inlet pipeline to compensate for the loss of water in the pump, and the excess water overflows through the overflow pipeline.

The vacuum degree and pumping volume of 2SK water ring vacuum pump can be adjusted through the gate valve on the pipeline. Not shown in the picture. Users can install it themselves.

Due to the fact that the 2SK water ring vacuum pump is discharged together with water during exhaust, water cooling is also required at both ends of the packing. In addition, the heat generated by gas compression keeps the water temperature rising (which has a significant impact on the performance of the pump). Therefore, it is necessary to regularly supplement clean cold water into the separator, so that it can enter the pump through the inlet pipeline. Users can choose not to use the air-water separator according to their actual situation, as long as there is no shortage of water or wastewater that can be recycled and reused, and allow the air-water mixture to directly enter the atmosphere. However, attention should be paid to the exhaust pipeline to ensure smooth discharge of air-water. The size of the water supply has an impact on the vacuum degree, pumping volume, and power consumption of the pump. Therefore, the size of the water supply should be strictly controlled within the specified range, and the water supply pressure should be around 0.1MPa. For this purpose, valves should be installed on the inlet pipeline to regulate the water supply volume.

When the 2SK water ring vacuum pump and atmospheric jet pump form a unit for operation, the atmospheric jet pump can be directly installed on the suction port of the two-stage pump, or connected to the suction port of the two-stage pump through a pipeline, and an electromagnetic valve can be used to control the on/off of the atmospheric pump in between.

10、 Installation dimensions of 2SK water ring vacuum pump

Figure 5: Appearance and Installation Dimensions of 2SK-0.4 and 2SK-0.8 Two Stage Non Ring Vacuum Pumps

model	A	B	C	D	E	F	G	H	I	J	K	L	M	N	P	R
2SK-0.4	310	350	20	590	125	200	235	φ14	280	102	G1"	φ25	104	36	5	15
2SK-0.8	335	375	20	660	150	210	260	φ14	280	102	G1"	φ25	104	36	5	15

Figure 6: Outline and Installation Diagram of 2SK-3P1, 2SK-6P1, 2SK-12P1, 2SK-20P1, and 2SK-30P1

model	A	A′	B	B′	C	D	D′	E	F	G	H	I	J	K	L	M	N	P	S	T	Z	n1	n2	d1	d2	d3	d4	d5	d6	d7
2SK-3P1	710	∕	400	400	1136	460	460	1346	427	491	275	35	159	214	167	344	162	99	357	570	G1/2"	4	4	18	120	152	18	110	150	14
2SK-6P1	863	∕	420	420	1391	470	470	1623	500	608	315	30	218	234	183	429	210	99	515	734	G1/2"	4	4	18	120	152	18	125	160	18
2SK-12P1	10375	∕	520	460	1642	580	520	1965	615	750	375	30	216	246	183	599	280	120	565	800	G1/2"	6	6	14	150	180	14	170	200	27
2SK-20P1	700	700	690	∕	1972	750	∕	2526	840	100	4500	30	306	283	225	619	350	180	774	1022	G3/4"	8	8	18	200	235	18	200	235	27
2SK-30P1	810	750	720	∕	2215	780	∕	2715	840	100	4500	30	344	283	225	749	350	180	1016	1264	G3/4"	8	8	18	200	235	18	200	235	27

Note: The air inlet of the atmospheric pump can be located in four directions perpendicular and parallel to the pump shaft.

Figure 7: Outline and Installation Dimensions of 2SK-0.5P

model

2SK-1.5P1

605

125

950

1150

212

144

252

360

404

584

764

255

410

G1/2"

φ140

φ110

φ40

M12

φ120

φ92

φ40

φ18

φ14

model	A	B	C	D	E	F	G	H	I	J	Z1	Z2	d1	d2	d3	d4	n
2SK-6P1	900	760	680	500	240	500	500	410	60	80	G1/2"	φ65	65	160	130	14	4
2SK-12P1	1250	1100	1000	650	260	500	615	690	60	80	G1/2"	φ80	80	185	150	18	4
2SK-20P1	1300	1100	1000	650	260	500	840	690	60	80	G3/4"	φ80	125	235	200	18	8
2SK-30P1	1300	1100	1000	650	260	500	840	690	60	80	G3/4"	φ80	125	235	200	18	8

11、 2SK water ring vacuum pump with first stage large air pump pumping speed curve

Note:

1. The performance indicators listed in the table are conducted under the following conditions:

(1) Inhalation pressure 10mmHg

(2) Water supply pressure ≥ 1kg

(3) Air temperature 20 ℃

(4) Relative humidity 70%

2. The water supply amount is the value when the suction vacuum is -400mmHg, and it can be greater than this value when the ultimate vacuum is reached.

3. The deviation of pumping volume shall not exceed ± 10%

12、 Common faults and solutions of 2SK water ring vacuum pump

fault	Reason for 2SK water ring vacuum pump	Solution for 2SK water ring vacuum pump
Insufficient pumping volume	1. The gap is too large	1. Adjust the gap
	2. Leakage at the packing point	2. Tighten or replace the packing material
	3. High water ring temperature	3. Increase water supply
	4. Leakage of pipeline system	4. Tighten flange bolts, replace gaskets or repair welding cracks, etc.
Reduced vacuum	1. Pipeline system aspect
	① Leakage at the flange connection	1. ① Tighten the flange bolts or replace the gasket
	② There are cracks in the pipeline	② Welding repair or replacement
	2. Regarding water ring pumps
	① Packing leakage	2. ① Tighten the packing and replace it with a new one
	② The clearance between the impeller and the side cover is too large	② Replace the gasket and adjust the gap
	③ Water ring heating	③ Reduce the water supply temperature
	④ Insufficient water quantity	④ Increase water supply
	⑤ Friction heating of parts causes an increase in water ring temperature	⑤ Adjust or reinstall
Vibration or noise	1. Loose foundation bolts	1. Tighten the foundation bolts
	2. There are foreign objects grinding inside the pump	2. Stop the pump, check and remove foreign objects
	3. Leaf shedding	3. Replace the impeller
	4. Cavitation erosion	4. Open the suction pipeline valve
Bearing overheating	1. Insufficient lubricating oil	1. Check the lubrication condition and add oil
	2. The packing pressure is too tight	2. Loosen the packing gland appropriately
	3. Lack of sealing water or insufficient supply	3. Supply sealing water or increase water volume
	4. The bearing or shaft or bearing frame is too tightly matched, causing the clearance between the ball and the inner and outer rings to be too small, resulting in friction.	4. Adjust the fit between the bearing and the shaft or bearing frame
starting difficulty	1. After long-term shutdown, rust appears inside the pump	1. Rotate the impeller several times by hand or special tools
	2. Packing compression	2. Lemon pine packing cover
	3. The impeller and pump body experience eccentric wear	3. Reinstall and adjust

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Ordering instructions for 2SK water ring vacuum pump:

1、 Please provide the following detailed data: ① Product name and model of 2SK water ring vacuum pump ② Vacuum degree requirements of 2SK water ring vacuum pump in units of PA or MPA ③ Pumping speed requirements of 2SK water ring vacuum pump in units of L/S or M3/MIN ④ Usage and power conditions of 2SK water ring vacuum pump ⑤ Motor power (KW) of 2SK water ring vacuum pump ⑥ Speed (r/min) of 2SK water ring vacuum pump ⑦ Voltage [V] of 2SK water ring vacuum pump ⑧ Inlet and outlet diameters of 2SK water ring vacuum pump ⑨ Does 2SK water ring vacuum pump come with accessories for us to correctly select for you.

2、 If the design unit has already selected the product model of our company's 2SK water ring vacuum pump, please order directly from the company's sales department according to the model of the 2SK water ring vacuum pump.

3、 When the usage situation is very important or the environment is complex, please provide design drawings and detailed parameters as much as possible, and our technical experts will confirm the selection for you.

4、 Our company's service hotline: 0533-4685088 4680598

Thank you for visiting our company's website. If you have any questions You can call us and we will do our best to provide you with high-quality service.

2SK type water ring vacuum pump

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