Mar 23, 2023
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Operation process of vane pumps
The Vane Pumps is a positive displacement pump. Its working principle is to use rectangular blades to move back and forth in the groove to move the fluid. They are sometimes referred to as sliding vane pumps.
A simple vane pump includes a circular rotor that rotates in a larger circular cavity. The centers of the two circles are offset, causing eccentricity. The blades are allowed to slide in and out of the rotor and are sealed at all edges to form a blade chamber to complete the pumping work. On the intake side of the pump, the volume of the vane cavity is increasing. These increasing volume vane cavities are filled with fluid driven by inlet pressure. The inlet pressure is actually the pressure from the pumping system, usually just atmospheric pressure. On the discharge side of the pump, the volume of the vane cavity decreases, forcing fluid out of the pump. The function of the blade is to expel the same volume of fluid with each rotation.
Generally, the pump mechanism includes a cylindrical rotor rotating in an asymmetrically shaped housing or cavity. Cylindrical rotors usually have many rectangular slots extending linearly along the outside of the cylinder. As the rotor rotates, the centrifugal force moves the blade outward so that the outer edge of the blade maintains contact with the inner surface of the asymmetrically shaped shell. In some cases, the blade may be tensioned. The asymmetrical shape of the casing allows the blades to move in and out of the slot as the rotor rotates. When the vane moves through the suction port of the pump, a vacuum is created. Vacuum is the reason for drawing fluid into the pump chamber. The fluid then moves between the vanes and is eventually forced out of the pump's discharge port. Like many rotary pumps, the direction of fluid flow can be reversed by reversing the direction of rotation of the pump.
Zhejiang Yongling Hydraulic Machine Co , Ltd., established in 1993, is a professional large-scale high-performance hydraulic vane pump manufacturer. Specializing in the production and supply of Vane Pumps and Fixed Vane Pumps . Our products are widely used in cutting, plastics, forging, engineering, leather, pressure, metallurgy, agriculture, transportation machinery and machine tools, hydraulic stations, automatic production lines and other fields. We have obtained ISO9001 international quality management system certification, and our products have won a good reputation in China with their stable and reliable quality, and they are used in the 2010 Asian Games Torch Tower. Our products occupy most of the domestic market, while being exported to Southeast Asia, Russia, Africa and other foreign markets. Welcome to consult and purchase: https://www.china-vanepump.com/
FIXED VANE PUMPS -RESEARCH AND APPLICATION OF VANE PUMP
The rotor of the vane pump has radial slots, which are located off-center in the housing bore. The blades tightly fitted in the rotor slots slide in and out as the rotor rotates. The blade action is assisted by centrifugal force, hydraulic pressure or push rod. The pumping action is caused by the expansion and contraction volume contained in the rotor, blades and casing. The blade is the main sealing element between the air inlet and the air outlet, usually made of non-metallic composite material. The rotor bushing runs in the pumped liquid or is isolated by the seal.
Vane pumps are usually operated between 1,000 rpm and 1,750 rpm. The pump works well with low-viscosity liquids, which easily fill the cavity and have good suction characteristics.
For high viscosity applications, the speed must be reduced significantly to load it into the area under the blade. These applications require stronger materials than conventional blades.
Because there is no metal-to-metal contact, these pumps are often used with low viscosity non-lubricating liquids such as propane or solvents. Compared with other PD pumps, this type of pump has better dry start capability.
Grinding applications require proper selection of blade materials and seals. Vane pumps have fixed end gaps on both sides of the rotor and vanes, similar to external gear pumps. Once the wear occurs, the gap cannot be adjusted, but some manufacturers provide replaceable or reversible end plates. Casing lining is a low-cost method to restore pump performance when wear occurs.
The vane pump is designed to handle low viscosity liquids such as liquefied petroleum gas (propane), ammonia, solvents, alcohol, fuel oil, gasoline and refrigerants. They can be used to pump liquids with viscosities up to 500 cPs / 2,300 SSU.
The vane pump can handle various fluid temperatures. -25 ° F and 500 ° F make them useful in various applications.
Zhejiang Yongling Hydraulic Machine Co , Ltd . was established in 1993, is a professional large-scale high-performance hydraulic vane pump manufacturer. Our company has a provincial high-tech enterprise R & D center. Specializing in the production and supply of high-quality Vane Pumps and Fixed Vane Pumps . We have obtained the ISO9001 international quality management system certification, and our products have won a good reputation in China with their stable and reliable quality, and are used in the 2010 Asian Games torch tower. Our products occupy most of the domestic market, while being exported to Southeast Asia, Russia, Africa and other foreign markets. Follow us for specific product information and technical information: https://www.china-vanepump.com/
Operating Characteristics Of Double-Acting Vane Pumps
Oil distribution plate: double acting vane pump oil distribution plate, there are two oil suction windows 2, 4 and two oil pressure windows 1, 3 on the plate, the oil seal area between the windows, usually the center of the oil seal area The angle a is slightly greater than or equal to the angle B between the two blades, otherwise the oil suction chamber and the pressure oil chamber will communicate, causing leakage. When the seal oil between the two blades transitions from the oil suction area to the oil seal area (large arc), the pressure is basically the same as the oil suction pressure, but when the rotor continues to rotate a slight angle, the seal cavity suddenly The oil pressure chamber communicates, causing the oil pressure in it to rise suddenly, and the volume of oil suddenly shrinks. The oil in the oil pressure chamber flows back into the cavity, which causes the instantaneous flow of the hydraulic pump to suddenly decrease, causing the flow pulsation of the hydraulic pump, Pressure pulsation and noise. Therefore, at the side of the oil pressure window of the oil distribution plate, a side of the blade that enters the oil pressure area from the oil seal area is opened with a triangular groove with a triangular cross-section (also known as an eyebrow groove), so that the closed oil between the two blades enters at the end. Before the oil pressure zone, the triangle groove communicated with the pressure oil, which gradually increased the pressure, thereby reducing the flow and pressure pulsation and reducing the noise. The groove c is in communication with the pressure oil cavity and the bottom of the rotor blade groove is communicated, so that the bottom of the blade acts with pressure oil.
Stator curve: It consists of four arcs and four transition curves.
The transition curve should ensure that the blades are closely attached to the inner surface of the stator, and that the speed and acceleration of the blades are uniformly changed when the blades move radially in the rotor slot, so that the impact of the blades on the inner surface of the stator is as small as possible. The stator transition curve mainly includes the following: modified Archimedes spiral; sinusoidal acceleration curve; constant acceleration first-grade deceleration curve; higher-order curve. In newer pumps, constant acceleration and first deceleration curves are used.
Blade inclination: During the operation of the blade, the blade and the stator are in close contact due to the centrifugal force and the pressure oil at the root of the blade. When the blade turns to the oil pressure area, the inner wall of the stator forces the blade to shrink toward the center of the rotor
Studies have shown that, in a double-acting vane pump, tilting the vane forward by an angle (13 ° forward) along the rotor rotation direction can reduce the lateral force of the stator inner wall on the vane, and make the vane move flexibly in the slot. Reduces wear. However, recent studies have shown that the rotor slots of some high-pressure double-acting vane pumps are radial and in good use.
Zhejiang Yongling Hydraulic Machine Co , Ltd . is a professional China manufacturer and supplier of Vane Pumps . Our products are widely used in cutting, plastic, forging, engineering, leather, pressure, metallurgy, agriculture, transportation machinery and machine tools, hydraulic stations, automatic production lines, etc. Welcome to purchase: https://www.china-vanepump.com/
What Are The Main Advantages Of Vane Pumps?
One of the main advantages of vane pumps is that the design is easily a variable displacement pump, rather than a fixed displacement pump, such as a spur gear (X-X) or gear rotor (I-X) pump. The centerline distance from the rotor to the eccentric ring is used to determine the displacement of the pump. By allowing the eccentric ring to pivot or translate relative to the rotor, the displacement can be changed. If the eccentric ring moves far enough, the vane pump may even pump backwards. However, performance cannot be optimized for bi-directional pumping. This can be made into a very interesting hydraulically controlled oil pump.
Variable displacement vane pumps are used as energy saving devices and have been used in many applications including automotive transmissions for more than 30 years.
Zhejiang Yongling Hydraulic Machine Co , Ltd . is a professional China manufacturer and supplier of Vane Pumps . T series high pressure needle pump is a high performance, low cost pump. The balanced design and lip-blade technology are key features; the V / Vq series vane pump has a unique filter element design in the vane, and is characterized by maintainability, high efficiency and long life. Our products are widely used in cutting, plastic, forging, engineering, leather, pressure, metallurgy, agriculture, transportation machinery and machine tools, hydraulic stations, automatic production lines and other fields. Welcome to purchase: https://www.china-vanepump.com/
Working Characteristics Of Vane Pumps
The advantages of vane pumps are as follows: 1.Vane pump is self-priming, sturdy and durable, providing a constant delivery capacity under given conditions speed. 2. They provide uniform discharge with negligible pulsation. 3. The blade can compensate for wear and tear, and the blade can be easily replaced. 4. These pumps do not require check valves. 5. They are lightweight and compact. 6. They can handle liquids containing vapors and gases. 7. High volume efficiency and overall efficiency. 8. Emissions are not sensitive to changes in viscosity and pressure.
The disadvantages of vane pumps are as follows: 1. If the output suddenly shuts off, a safety valve is required to protect the pump. 2. They are not suitable for abrasive liquids. 3. They need good tightness. 4. They need a good filtration system, and foreign matter will seriously damage the pump
Zhejiang Yongling Hydraulic Machine Co , Ltd . is a professional manufacturer and supplier of Vane Pumps in China. Our vane pump products are: T series high pressure needle vane pump is a high performance, low cost pump. Balanced design and lip blade technology are key features. It is also a popular product in the industry. The V / Vq series vane pump has a unique filter element design in the vane, and is characterized by maintainability, high efficiency and long service life. Suitable for industry. There are other types of premium vane pump products. Welcome to buy: https://www.china-vanepump.com/
Where Are Vane Pumps Used?
Aerosol and propellant Aviation Services-Fuel Transfer, Deicing Automotive industry-fuels, lubricants, refrigerants Bulk transfer of LPG and NH3 Liquefied petroleum gas cylinder filling Liquor Refrigeration-Freon, Ammonia Solvents Aqueous solution
Zhejiang Yongling Hydraulic Machinery Co , Ltd. is a professional large-scale high-performance hydraulic vane pump manufacturer and supplier. Our products are widely used in cutting, plastic, forging, engineering, leather, pressure, metallurgy, agriculture, transportation machinery and machine tools, hydraulic stations, automatic production lines and other fields. Visit our website to view more Vane Pumps and information: https://www.china-vanepump.com
Vane Pumps Market Growth Prospects Analysis and Future Strategic Planning by 2026
Vane Pumps Market Growth Prospects Analysis and Future Strategic Planning by 2026
Chicago, United States, Nov 27, 2019 — Vane Pumps Market – Global Industry Analysts 2019–2026. The report has been put together using primary and secondary research methodologies, which offer an accurate and precise understanding of the Vane Pumps market. Analysts have used a top-down and bottom-up approach to evaluate the segments and provide a fair assessment of their impact on the global Vane…
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