Water Ring Vacuum Pump

HZPT professional manufacturing

HZPT is a distinguished global leader in the design, manufacturing, and sale of Water Ring Vacuum Pumps, known for setting industry standards with innovative solutions and unparalleled efficiency. Our company prides itself on delivering state-of-the-art Water Ring Vacuum Pumps that cater to a broad spectrum of industrial applications, including but not limited to chemical processing, pharmaceuticals, food and beverage production, and environmental engineering.

At HZPT, we understand the critical role that reliable vacuum technology plays in our clients' operations. That's why our Water Ring Vacuum Pumps are engineered to provide consistent performance, operational efficiency, and durability. Our pumps are specifically designed to handle moist and saturated gas streams, making them an ideal choice for industries dealing with challenging conditions where conventional vacuum pumps might falter.

Choosing HZPT for your needs ensures access to top-tier technology, expert support, and sustainable solutions that drive efficiency and productivity in your operations. Let HZPT be your partner in navigating the complexities of industrial vacuum applications with our reliable and efficient Water Ring Vacuum Pumps.

Advantages of Water ring vacuum pump compared with other vacuum pumps

Feature Water Ring Vacuum Pump Rotary Vane Vacuum Pump Diaphragm Vacuum Pump Screw Vacuum Pump
Operating Principle Uses water as a sealant, creating a vacuum by centrifugal action of a rotating impeller. Utilizes sliding vanes in a rotor to create a vacuum. Relies on a diaphragm's reciprocating motion to create vacuum. Utilizes two screw rotors rotating in opposite directions to compress air and create a vacuum.
Lubrication Does not require oil lubrication; uses water instead. Requires oil lubrication for smooth operation. Oil-free operation, suitable for clean applications. Often requires oil lubrication for sealing and cooling.
Maintenance Low maintenance due to simple construction and absence of oil. High maintenance due to oil changes, filter replacements, and vane wear. Low maintenance, thanks to oil-free operation. Moderate maintenance required for oil, seals, and screw elements.
Noise Level Relatively quiet operation due to water's damping effect. Can be noisy due to mechanical operation. Generally quiet operation. Can be noisy due to high-speed operation.
Environmental Impact Water usage and treatment may be required, but no oil disposal. Oil mist and disposal can impact the environment. Minimal environmental impact due to oil-free operation. Oil disposal and potential leaks could be environmental concerns.
Suitability for Wet Loads Excellently suited for handling moist or wet gases. Wet loads can cause issues with oil contamination and vane wear. Not suitable for wet loads; moisture can damage the diaphragm. Can handle moist gases, but efficiency might be affected.
Initial Cost Moderate initial cost. Lower initial cost but higher operating costs due to consumables. Higher initial cost due to sophisticated design for oil-free operation. Higher initial cost, especially for oil-free models.
Operational Efficiency Efficient in continuous duty and capable of handling large volumes. High vacuum levels but efficiency decreases with wear. Lower maximum vacuum levels compared to other types. High efficiency and can achieve deep vacuum levels.


Features of Water ring vacuum pump

1. Simple Operation and Structure: Water ring vacuum pumps have a relatively simple design and operation. They consist of a rotating impeller within a partially filled water chamber. The impeller creates a centrifugal force that forms a water ring within the chamber, which creates and maintains a vacuum.

2. Ability to Handle Contaminants: These pumps can handle gases containing solid particles, dust, and moisture. The water ring within the pump acts as a sealing element and as a buffer for these contaminants, making it suitable for use in applications where dirtier gases are present.

3. Low Cost and Maintenance: Water ring vacuum pumps are generally cost-effective to purchase and maintain. The water used in the pump acts as a lubricant and coolant, reducing the need for additional lubrication systems. Additionally, the wear and tear on the pump's components are relatively low, further contributing to its longevity and reduced maintenance requirements.

4. Moderate Vacuum Levels: Water ring vacuum pumps can achieve moderate vacuum levels, typically in the range of several hundred to several thousand Pascals (Pa). This range is suitable for many industrial and commercial applications that do not require ultra-high vacuum levels.

5. Variable Speed Capability: Some water ring vacuum pumps can be operated at variable speeds, allowing for flexibility in adjusting the vacuum level and flow rate based on the application's specific needs.

6. Relatively High Noise Level: A potential drawback of water ring vacuum pumps is their relatively high noise level compared to other types of vacuum pumps. This noise can be a consideration in applications where noise levels are a concern or need to be minimized.


Water ring vacuum pump application fields

Water ring vacuum pumps have various applications in various fields due to their unique characteristics and advantages. Here are some of the primary application fields for water ring vacuum pumps:

1. Industrial Processes: In industrial settings, water ring vacuum pumps are often used to evacuate gases and create a vacuum in various processes. They can handle contaminated gases, dust, and moisture, making them suitable for dirty or dusty environments.

2. Chemical and Pharmaceutical Industries: These pumps are commonly used in the chemical and pharmaceutical industries to handle corrosive or toxic gases. The water ring protects the pump's internal components from direct contact with these harmful substances.

3. Vacuum Distillation and Evaporation: Water ring vacuum pumps are often used in vacuum distillation and evaporation processes, where a vacuum is required to lower liquids' boiling points or separate components.

4. Food and Beverage Processing: In the food and beverage industry, water ring vacuum pumps are used for various applications such as vacuum packaging, dehydration, and evaporation. They can handle the specific food processing requirements, including hygiene and cleanliness.

5. Power Generation: Water ring vacuum pumps are used in power plants, especially steam turbine systems. They assist in evacuating non-condensable gases from the condenser, improving the steam turbine's efficiency.

6. Environmental Protection: In ecological protection and waste treatment applications, water ring vacuum pumps can be used for gas extraction and ventilation systems to control emissions and ensure safe working conditions.

7. Research and Development Laboratories: These pumps are also commonly used in research and development laboratories for experiments that require a controlled vacuum environment.


How does a water ring vacuum pump work?

The working principle of the water ring vacuum pump is based on the mechanical action of the rotating part of the pump to remove gas from the pump body. The specific working process is as follows:

1. A separator is installed in the pump body, and an impeller is installed in the separator. The impeller is connected to the main shaft and driven by a connecting rod.

2. When the pump body is filled with water, start the vacuum pump and the impeller starts to rotate. The rotation of the impeller generates centrifugal force, which forms a water ring in the water.

3. When the vacuum pump is working, the vacuum pump air inlet is connected to the container being evacuated. Initially, the water ring in the pump body will block the air inlet, preventing gas from entering the pump body.

4. As the impeller rotates, the water ring will further form a chamber. As the volume of the chamber above the impeller increases, gas will enter the chamber from the container.

5. The impeller then transfers the gas to the separator. As the water ring in the pump body rotates, the centrifugal force generated separates the gas and liquid. The liquid is returned to the pump body in the form of a water ring, while the gas is pumped away.

6. The extracted gas is discharged through the outlet of the pump body, and the pump body continues to extract the gas.

Main components of water ring vacuum pump

The main components of the water ring vacuum pump include the following parts:

1. Pump body: The pump body is the shell of the entire water ring vacuum pump, usually in a cylindrical shape. The inner wall of the pump body forms a space for gas flow and liquid circulation.

2. Rotor: The rotor is located inside the pump body and is a key component that drives the water ring to rotate. It usually has an eccentric design; its center does not exactly coincide with the center of the pump body. This design facilitates the creation of chambers of different sizes.

3. Blade: The blade is a blade or plate-like structure fixed to the rotor. When the rotor rotates, the blade is inserted into the water ring to help form and separate the working chamber.

4. Air inlet and exhaust ports: The air inlet is the passage for gas to enter the pump body, usually located on the side or top of the pump body. The exhaust port is the channel through which gas is compressed and discharged from the pump body, usually located at the other end of the pump body.

5. Shafts and Bearings: The shaft is used to connect the rotor to the motor, allowing the rotor to rotate. Bearings support the shaft and provide stable rotational motion.

6. Sealing device: In order to ensure the sealing inside the pump body and prevent gas leakage, a sealing device is usually installed, such as a mechanical seal or a packing seal.

7. Cooling system: Since the water ring vacuum pump generates heat during operation, a cooling system is required to keep the temperature of the pump body within the normal range. This usually includes cooling water channels and circulation pumps.

8. Liquid circulation system: used to pump water or other working liquid from the bottom of the pump body and form a water ring in the pump body.


Main performance parameters of Water ring vacuum pump

The main performance parameters of water ring vacuum pumps include:

1. Pumping speed: refers to the pump's ability to pump gas per unit time. The greater the pumping speed, the stronger the pump's pumping capacity. The pumping speed of a water ring vacuum pump is usually between 10 and 1,000 cubic meters per hour, depending on the model and size of the pump.

2. Ultimate pressure: refers to the lowest pressure that the pump can reach under ideal conditions. The ultimate pressure of a water ring vacuum pump is generally between 1 and 50 millibars. The specific value is related to the model and size of the pump.

3. Compression ratio: refers to the pump's ability to compress gas. The larger the compression ratio, the better the pump compresses the gas. The compression ratio of a water ring vacuum pump is usually between 2 and 20.

4. Flow range: refers to the volume of gas or liquid that the pump can handle per unit time. For water ring vacuum pumps, the flow range may vary depending on the model. For example, the flow range of some models may be 0.45~320m³/h or 4.5~500m³/h.

5. Maximum vacuum degree: Indicates the maximum vacuum degree that the pump can achieve, usually expressed in a certain pressure unit (such as MPa). The maximum vacuum degree of a common water ring vacuum pump may be -0.08MPa.

6. Motor power range: refers to the power range of the motor required to drive the pump. Depending on the size and purpose of the pump, the motor power may vary greatly, for example from 0.81~45kW or 1.1~185kW.


Routine maintenance and common troubleshooting of water ring vacuum pump

Routine maintenance:

1. Regular inspection: All parts of the water ring vacuum pump should be inspected regularly, including bolts, suction pipes, packing seals, rotating parts, etc., to ensure that they are intact and free of looseness or leakage. At the same time, pay attention to the working condition of the , check its lubrication and temperature, and keep it working within the normal range.

2. Cleaning and Replacement: It is very important to keep the inside of the pump clean. The pump should be regularly cleaned of scale and worn parts or packing replaced as necessary. When using hard water as the working fluid, the water should be softened or the pump should be flushed with solvent regularly.

3. Anti-rust and anti-freeze: If the pump is not used for a long time, the water in the pump should be drained and anti-rust agent or oil should be injected to protect the pump body. When using the pump in a low-temperature environment, anti-freeze and anti-corrosion working fluid should be used, and the water in the pump cavity should be drained after each use.


1. Abnormal sounds: When you hear abnormal sounds in the pump, it may be that the impeller or distributor is damaged, or the exhaust valve plate is faulty. At this time, the pressure plates at both ends should be removed for inspection, and damaged parts should be replaced as necessary.

2. Decreased flow rate or vacuum degree: When it is found that the pumping volume or vacuum degree of the pump is reduced, the exhaust pressure should be checked first to ensure that the exhaust is smooth. At the same time, the sealing performance inside the pump should also be checked to ensure that there is no leakage.

3. Motor Problems: If your motor isn't running properly, there could be a problem with the power supply or a fault with the motor itself. The power connection and motor status should be checked, and if any problems are found, repair or replace them in time.

Installation of water ring vacuum pump

1. Preparation: First, check that all parts of the pump are complete and intact. Prepare the required installation tools and confirm that the environment at the installation site is safe.

2. Foundation Preparation: Prepare a suitable foundation based on the size and weight of the pump. Make sure the foundation is flat, solid, and meets the pump installation requirements.

3. Install the pump body: Place the pump body on the foundation and use a level to adjust it to ensure the pump body is level. Then, use bolts to secure the pump body to the foundation.

4. Install the motor: Install the motor at the corresponding position on the pump body, and adjust the position of the motor so that it is aligned with the pump shaft. Use a to connect the pump shaft and motor shaft, and ensure that the connection is firm and the coaxiality is good.

5. Connect the pipes: Connect the corresponding pipes according to the inlet and outlet positions of the pump. Make sure the pipe connections are tight and leak-free, and use brackets to secure the pipes to prevent them from being affected by external forces.

6. Install a cooling system: If the pump requires cooling, a cooling system should be installed. Connect the cooling water pipe and ensure that the cooling water can flow into and out of the pump body smoothly.

7. Inspection and trial operation: After completing the installation, carefully inspect the entire system to ensure that all components are installed correctly and fastened reliably. Then, perform a trial run to observe the operation of the pump and check whether there are any abnormal sounds, vibrations or leaks.


Why choose HZPT?

1. QUALITY PRODUCTS: HZPT is committed to providing the highest quality water ring vacuum pumps. Our products are precision engineered and manufactured from advanced materials to ensure durability, reliability and consistent performance.

2. Comprehensive Service: We pride ourselves on providing exceptional service to our customers. Our dedicated team of professionals is ready to answer your questions, provide technical support, and provide solutions tailored to your specific needs.

3. Competitive Prices: HZPT offers competitive prices without compromising on quality. We believe in creating value for our customers and work hard to ensure that our products are competitively priced, making them suitable for every budget.

4. Excellent After-Sales Support: We know that a product is only as good as the support you receive after purchase. HZPT provides comprehensive after-sales service, including timely repairs, replacements and maintenance, ensuring your vacuum pump remains in top condition longer.

5. Wide product range: HZPT offers a wide range of vacuum pumps to meet different applications and requirements. From water ring vacuum pumps, screw vacuum pumps to slide valve vacuum pumps, we can provide you with the right products.