VQ Series vane pumps with high performance and high pressure which
designed for constraction machinery especially for mobile machinery. Features:
1.Designed by intra-vane structure, reduce the vane pressure to rotor, makes stable performance
and longer life in high speed and pressure.
2.To adopt folating structure for side plate,will do a compensation for end-face clearance by
automatic,makes high speed and high pressure which can up to 21 MPa.
3.The plate is made of dual-metal material, improved the seizure resistance. Complete displacement,
composite structure and high pricise spare parts allows convenient maintenance.
3520VQ Series Hydraulics Vane Pump
Installation and Use:
1. In installation, the tolerance of concentricity between shaft of pump and motor must be less than
0.10mm(TIR) and the maximum permissible angle error is less than 0.2 degrees by using the
flexible coupling; The pump shaft shall not bear the radial and axial load; The carrier must be firm
with good rigidity and can fully absorb vibrations.
2. Set the suction pressure at pump inlet port : Recommended inlet pressure is 0 to 35Kpa.
3. Oil should be kept clean, pipes and tanks must be thoroughly cleaned; The cleanness level of oil
should be within NSA12.
4. Nomal pump operation(at rated conditions)is based on the use of SAE10W oil in the 38ºC to 82ºC
range (or comparable viscosities)
5. Check the inlet, outlet and direction of rotation before starting the pump. Turn the shaft of pump
evenly and nimbly by hand after fixing the pump. At the time of first-starting ,if the pump does not
immediately prime , air should be bled from the pump delivery line .
6. When first put into use, the pump body and oil suction pipeline should be filled with oil, and the
pump shall not be allowed to operate without oil.
7. Do not start the pump when the outlet pressure is lower than the inlet pressure. This will cause work
noise and blade instability.
8. Cold start condition:When operating SAE10W oil in the 860 to 40 cSt range, the speed and
pressure should be limited to 50% or less of their respective rated values until the system has
warmed up. Extreme caution must be used when starting units when fluid viscosity are greater than
860 cSt, Care should be exercised to warm up the entire system, including remote cylinders and
9. At high temperature, viscosities must not be less than 13cSt, Temperatures should not exceed 99ºC
because the expectancy of cartridge kite and ela
stomers will decrease
Packaging & Shipping
Plastic packing for each pump, Inner box for each pump, Outer box packing then put on the pallet
1.Q: Is your company a trading company or a manufacturer?
A: Our company is a trading company also a manufacturer, we have our own factory for production.
2.Q:What about the quality control and warranty ?
A: “Quality first, Customers foremost”.Every piece of products is cheeked and tested strictly one by one before packing and shipping.
Our products have 1 year warranty, technical support is endless from us.
3.Q:Can you provide samples for checking and testing?
A:yes,we provide free samples for checking the build quality and real performance of our products,the freight need to be coverd by customer.
4.Q:How can I get to your company?
A: Our company address is No.888 Huaxu Road,Xihu (West Lake) Dis. district,ZheJiang ,China
It is about 30 minutes by car from ZheJiang Xihu (West Lake) Dis.ao airport or ZheJiang Xihu (West Lake) Dis.ao Railway station.
|Transport Package:||Carton+Wooden Case|
Types of vacuum pumps
A vacuum pump is a device that draws gas molecules from a sealed volume and leaves a partial vacuum in its wake. Its job is to create a relative vacuum within a specific volume or volume. There are many types of vacuum pumps, including centrifugal, screw and diaphragm.
Forward centrifugal pump
Positive displacement centrifugal vacuum pumps are one of the most commonly used pump types in the oil and gas industry. Their efficiency is limited to a range of materials and can handle relatively high solids concentrations. However, using these pumps has some advantages over other types of pumps.
Positive displacement pumps have an enlarged cavity on the suction side and a reduced cavity on the discharge side. This makes them ideal for applications involving high viscosity fluids and high pressures. Their design makes it possible to precisely measure and control the amount of liquid pumped. Positive displacement pumps are also ideal for applications requiring precise metering.
Positive displacement pumps are superior to centrifugal pumps in several ways. They can handle higher viscosity materials than centrifuges. These pumps also operate at lower speeds than centrifugal pumps, which makes them more suitable for certain applications. Positive displacement pumps are also less prone to wear.
Positive displacement vacuum pumps operate by drawing fluid into a chamber and expanding it to a larger volume, then venting it to the atmosphere. This process happens several times per second. When maximum expansion is reached, the intake valve closes, the exhaust valve opens, and fluid is ejected. Positive displacement vacuum pumps are highly efficient and commonly used in many industries.
Self-priming centrifugal pump
Self-priming centrifugal pumps are designed with a water reservoir to help remove air from the pump. This water is then recirculated throughout the pump, allowing the pump to run without air. The water reservoir can be located above or in front of the impeller. The pump can then reserve water for the initial start.
The casing of the pump contains an increasingly larger channel forming a cavity retainer and semi-double volute. When water enters the pump through channel A, it flows back to the impeller through channels B-C. When the pump is started a second time, the water in the pump body will be recirculated back through the impeller. This recycling process happens automatically.
These pumps are available in a variety of models and materials. They feature special stainless steel castings that are corrosion and wear-resistant. They can be used in high-pressure applications and their design eliminates the need for inlet check valves and intermediate valves. They can also be equipped with long intake pipes, which do not require activation.
Self-priming centrifugal pumps are designed to run on their own, but there are some limitations. They cannot operate without a liquid source. A foot valve or external liquid source can help you start the self-priming pump.
The mechanical and thermal characteristics of a screw vacuum pump are critical to its operation. They feature a small gap between the rotor and stator to minimize backflow and thermal growth. Temperature is a key factor in their performance, so they have an internal cooling system that uses water that circulates through the pump’s stator channels. The pump is equipped with a thermostatically controlled valve to regulate the water flow. Also includes a thermostatic switch for thermal control.
Screw vacuum pumps work by trapping gas in the space between the rotor and the housing. The gas is then moved to the exhaust port, where it is expelled at atmospheric pressure. The tapered discharge end of the screw further reduces the volume of gas trapped in the chamber. These two factors allow the pump to work efficiently and safely.
Screw vacuum pumps are designed for a variety of applications. In some applications, the pump needs to operate at very low pressures, such as when pumping large volumes of air. For this application, the SCREWLINE SP pump is ideal. Their low discharge temperature and direct pumping path ensure industrial process uptime. These pumps also feature non-contact shaft seals to reduce mechanical wear. Additionally, they feature a special cantilever bearing arrangement to eliminate potential sources of bearing failure and lubrication contamination.
Screw vacuum pumps use an air-cooled screw to generate a vacuum. They are compact, and clean, and have a remote monitoring system with built-in intelligence. By using the app, users can monitor pump performance remotely.
Diaphragm vacuum pumps are one of the most common types of vacuum pumps found in laboratories and manufacturing facilities. The diaphragm is an elastomeric membrane held in place around the outer diameter. While it is not possible to seal a diaphragm vacuum pump, there are ways to alleviate the problems associated with this design.
Diaphragm vacuum pumps are versatile and can be used in a variety of clean vacuum applications. These pumps are commercially available with a built-in valve system, but they can also be modified to include one. Because diaphragm pumps are so versatile, it’s important to choose the right type for the job. Understanding how pumps work will help you match the right pump to the right application.
Diaphragm vacuum pumps offer a wide range of advantages, including an extremely long service life. Most diaphragm pumps can last up to ten thousand hours. However, they may be inefficient for processes that require deep vacuum, in which case alternative technologies may be required. Additionally, due to the physics of diaphragm pumps, the size of these pumps may be limited. Also, they are not suitable for high-speed pumping.
Diaphragm vacuum pumps are a versatile subset of laboratory pumps. They are popular for their oil-free construction and low maintenance operation. They are available in a variety of styles and have many optional features. In addition to low maintenance operation, they are chemically resistant and can be used with a variety of sample types. However, diaphragm pumps tend to have lower displacements than other vacuum pumps.
Atmospheric pressure is a key factor in a vacuum pump system
Atmospheric pressure is the pressure created by the collision of air molecules. The more they collide, the greater the pressure. This applies to pure gases and mixtures. When you measure atmospheric pressure, the pressure gauge reads about 14.7 psia. The higher the pressure, the greater the force on the gas molecules.
The gas entering the vacuum pump system is below atmospheric pressure and may contain entrained liquids. The mechanism of this process can be explained by molecular kinetic energy theory. The theory assumes that gas molecules in the atmosphere have high velocities. The resulting gas molecules will then start moving in random directions, colliding with each other and creating pressure on the walls of the vacuum vessel.
Atmospheric pressure is a critical factor in a vacuum pump system. A vacuum pump system is useless without proper atmospheric pressure measurement. The pressure in the atmosphere is the total pressure of all gases, including nitrogen and oxygen. Using total pressure instead of partial pressure can cause problems. The thermal conductivity of various gases varies widely, so working at full pressure can be dangerous.
When choosing a vacuum pump, consider its operating range. Some pumps operate at low atmospheric pressure, while others are designed to operate at high or ultra-high pressure. Different types of pumps employ different technologies that enhance their unique advantages.
The screw pump is less efficient in pumping gases with smaller molecular weight
Vacuuming requires a high-quality pump. This type of pump must be able to pump gas of high purity and very low pressure. Screw pumps can be used in laboratory applications and are more efficient when pumping small molecular weight gases. Chemical resistance is critical to pump life. Chemical resistant materials are also available. Chemically resistant wetted materials minimize wear.
Gear pumps are more efficient than screw pumps, but are less efficient when pumping lower molecular weight gases. Gear pumps also require a larger motor to achieve the same pumping capacity. Compared to gear pumps, progressive cavity pumps also have lower noise levels and longer service life. In addition, gear pumps have a large footprint and are not suitable for tight spaces.
Progressive cavity pumps have two or three screws and a housing and side cover. They are also equipped with gears and bearings. Their mechanical design allows them to operate in high pressure environments with extremely low noise. The progressive cavity pump is a versatile pump that can be used in a variety of applications.
Dry screw compressors have different aspect ratios and can operate at high and low pressures. The maximum allowable differential pressure for screw compressors ranges from 0.4 MPa for 3/5 rotors to 1.5 MPa for 4/6 rotors. These numbers need to be determined on a case-by-case basis.
editor by CX 2023-05-19