Water Ring Vacuum Pump

The water ring vacuum pump is a precise variety of rotary positive-displacement pumps employing water as the chief component in air compression. It can compress up to atmospheric pressure using water as the sealant liquid. In this type of pump, the details in motion do not contact each other mechanically, while water performs the role of a piston. This type of pump is used in industries for various applications such as drying, distillation, impregnation, venting, sterilization, degassing, evacuation, etc.

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Water Ring Vacuum Pump Types

Water ring vacuum pump working liquid and other suitable liquid can be applied; either working liquid is collectively referred to as liquid ring vacuum pump. The water ring vacuum pump is the most common liquid ring vacuum pump, the most widely used pump.

Single Stage Water-Ring Vacuum Pump

A single-stage water ring vacuum pumps with a single impeller to realize single-stage compression. It has a simple structure, advanced technology, reliable operation, high efficiency, and energy saving. During the process, the gas is compressed at an equal temperature, so the water ring vacuum pumps and compressors can be used to suck and compress flammable, explosive, and poisonous gases.

Two Stage Water Ring Vacuum Pump

Two-stage water ring vacuum pump has the characteristics of two-stage compression, high vacuum, and high pumping speed in a high vacuum area. It can extract air and other non-corrosive, water-insoluble, and solid-free gases. It is widely used in vacuum evaporation, vacuum impregnation, vacuum concentration, and vacuum drying in food, chemical, pharmaceutical, metallurgical and electronic fields.

Mono-block Water Ring Vacuum Pump

We develop mono block / close couple type vacuum pumps, which are very economical; monoblock vacuum pumps are very compact in design; they can be quickly taken from one place to another. It comprises a sturdy casing and suction & delivers nozzles and feet, and is easy to assemble.

Working Principle of Water Ring Vacuum Pump

Water-ring vacuum pump is provided with a balanced rotor shaped as a cylinder with a hollow hub & it is attached to radial blades that rotate freely in a circular casing. The rotation of the edges in the circular case generates working spaces. As the rotor moves from the lower to the upper vertex, the volume of the working space enlarges and vice versa. When the functional area is evenly distributed on the edge of the rotor, a continuous suction and the ejection of water happen.

Advantages of Water/Liquid Ring Vacuum Pump

The gas compression is close to isothermal compression, the temperature change during compression is small, no metal contact surface rubs against each other in the pump, and combustion and explosion accidents are not easy to occur. Great superiority.

As is known to all, the water ring vacuum pump and water ring compressor have the characteristics of simple structure, convenient operation, and maintenance, which have been widely used in all kinds of industries, In particular, which has the features of isothermal compression and accessible to suction, compression of flammable and explosive gases.

Structure Simple

The structure is simple, the manufacturing requirements are not high, there is no need for suction and exhaust valves, and the work is stable and the air volume is uniform.

Work Reliable

If the liquid ring adopts non-oil working medium, the pumped gas will not be polluted by oil. Also suitable for gases containing vapour, moisture or solid particles.

Operation Easy

The rotating parts in the pump cavity and the fixed parts are sealed by liquid, and no lubrication is required, so the maintenance is simple, the operation is easy, and the work is reliable.

How To Install Water Ring Vacuum Pump?

Proper water ring vacuum pump installation is critical to its subsequent operation and maintenance. As with any pump, care should be taken in unpacking the pump so as not to damage or misalign the assembly. For pump and motor units mounted on a baseplate, the team should be lifted by the base only. Slings or hooks should not be attached to the pump or motor since this can cause misalignment. Also, the pump should not be run until it is properly installed, nor should it be run without a sealing liquid.

Water Ring Vacuum Pump for Sale

The following list is only a partial display of water ring vacuum pump products, and more water ring vacuum pump products are in succession on the shelves. Please get in touch with us by email if you need to buy a water ring vacuum pump. Email: [email protected]

Knowledge of water ring vacuum pump

Reasons And Repairs For Shaft Damage Of Water Ring Vacuum Pump

In the damage of the parts of the single-acting water ring vacuum pump, the deterioration of the shaft occupies a large proportion. Damage to the pump shaft includes bending, cracking, and breaking.

The reason for the bending of the pump shaft is primarily due to the insufficient rigidity of the sleeve and the large unbalance of the impeller, which is caused by deformation during operation.

The cracked and broken parts of the pump shaft often occur where local stress is concentrated, such as the edge of the keyway, the sudden change of diameter, etc. The cause of damage is usually due to vibration-induced fatigue failure.

If the pump shaft has fatigue cracks (a precursor to breaking), it should be replaced in time. If it is necessary to continue to use due to objective factors that cannot be replaced temporarily, the temporary remedy is to repair the crack. When using the pump shaft after repair welding, always pay attention to the changes in the repair welding area to avoid accidents.

The available water ring vacuum pump shaft has not undergone heat treatment, so the fatigue strength is low. To prevent breakage, the pump shaft should at least undergo quenching and tempering treatment, and nitriding treatment should be carried out where conditions permit.

During processing, the circumferential processing at the transition of different shaft diameters must ensure the quality and be carried out in strict accordance with the size and finish required by the drawings. When designing, avoiding too significant abrupt changes in the cross-section is necessary. Instead of sharp corners at transitions, fillet connections are applied. The surface finish should not be too low, especially where the shaft is easily broken. The surface of the pump shaft and the transition should not have knife marks, scratches, bumps, and other defects.

The fatigue damage of the pump shaft is very harmful to production and is a problem that users are highly concerned about. The solution is to check the fatigue strength of the pump shaft according to the magnitude of the radial force. When using corrosive gases and liquid rings, use corresponding corrosion-resistant materials. The pump shaft must be quenched, tempered, and processed during processing. To ensure quality and so on.

The Main Types Of Impeller Damage Of Water Ring Vacuum Pump

The types of blade damage of water ring vacuum pump are mainly broken blade, blade crack, blade corrosion or cavitation.

1. Leaf break
Mainly due to solids stuck in the pump, such as metal blocks, gravel, etc. When the impeller rotates, it hits the solid block or gets stuck by the solid and breaks the blade. In addition, due to the stress concentration at the root of the blade, the fatigue damage caused by the gas and hydraulic pressure in the small cavity of the pump. The impeller with damaged blades should be replaced in time, and the cause should be found out, and corresponding measures should be taken (for example, if the impeller is damaged due to insufficient strength, the number of blades can be increased).

2. Blade cracks
Usually occurs at the root of leaves. Most of them are fatigue cracks, and some are casting cracks caused by the huge difference in the size of the blade and the hub. The impeller with cracks should be replaced to prevent the blades from breaking and causing accidents.

3. Abrasion of blades
The impeller that is corroded due to the conveying of corrosive gas or liquid, or the liquid ring contains solid impurities and is damaged by friction with the surface of the impeller, or the impeller damaged due to cavitation, should be replaced in serious cases. If the damage is not serious, it can be replaced. Repair by repair welding. During repair welding, the impeller can be heated to 600 ℃, and then repair welding is performed. The size of the blade gun after repair welding is increased, and it must be processed to the original size with a file or on a lathe, otherwise the original performance will be affected.