The vane pump is a pump in which the vanes in the rotor groove come into contact with the pump casing (stator ring) and press the sucked liquid from the oil inlet side to the discharge side.



After the vane pump runs for a long time, you need to pay attention to some things, such as how to prevent the oil in the vane pump hydraulic pump? Has the hydraulic oil decreased unknowingly? How did it disappear? How to effectively prevent the pumping phenomenon of the hydraulic oil tank of the vane pump? The following is a brief introduction to the anti-smashing oil of the vane pump hydraulic oil tank:



1. The air filter usually provided on the vane pump hydraulic tank is also used as a liquid port. When the machine is driving on uneven bumpy roads or the hydraulic cylinder is rapidly circulating, the oil is easily removed from the air filter.



2. This not only causes waste, but also pollutes the environment. Although the fuel tank partition can prevent the fluctuation of oil to a certain extent, it is difficult to completely avoid the occurrence of oil sputum.



3. After the improvement, the anti-smashing sleeve was added before the improvement. The sleeve is higher than the upper plane of the fuel tank and welded to the fuel tank; many small holes are punched in the sleeve in the fuel tank.



4. In this way, not only the slow-boiling oil caused by the fluctuation of the oil can be eliminated, but also the slow-boiling oil caused by the foam generated after mixing the air into the system can be well prevented.



5. The improved vane pump device effectively avoids excess oil overflow, reduces losses, and has no adverse impact on equipment engineering



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The gear pump is compact and simple, with a limited number of moving parts. They cannot match the pressure generated by reciprocating pumps or the flow of centrifugal pumps, but they provide higher pressure and throughput than vane pumps or lobe pumps. Gear pumps are particularly suitable for pumping oil and other high-viscosity fluids.

In both designs, due to stronger shaft support and smaller tolerances, internal gear pumps have better suction capacity and are suitable for high viscosity fluids, although their effective working range is 1 cP to more than 1,000,000 cP. Since the output is proportional to the speed, gear pumps are commonly used for metering and mixing operations. Gear pumps can be designed to handle corrosive liquids. Although they are usually made of cast iron or stainless steel, new alloys and composite materials enable the pump to handle corrosive liquids such as sulfuric acid, sodium hypochlorite, ferric chloride, and sodium hydroxide.


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How to correctly replace the pump core of the vane pump? Zhejiang Yongling Hydraulic Machinery Co., Ltd. elaborated:


1. When replacing the pump core, first check whether the positioning hole in the pump casing is deformed, and whether the matching part of the external spline and the internal spline of the pump core is worn or deformed. If the positioning hole is deformed or the shaft key is worn, it is recommended that the user replace the entire pump.

2. Check whether the shaft seal is aging and deformed, and whether the bearing is worn and loose. Care should be taken when replacing. It is recommended to use a flat hard object with an outer diameter that is consistent with the shaft seal and an outer diameter slightly larger than the inner diameter of the bearing and an inner diameter slightly larger than the outer diameter of the pump shaft In a fixed position, to prevent deformation of the shaft seal and damage to the bearing.

3. Check the model of the new and old pump cores, whether the working direction is the same, and then confirm that they can be installed. Before installation, clean the inner wall of the pump casing, add lubricating oil and then install the pump core. Whether the stator of the pump core and the oil distribution plate are concentric. After adjusting the concentricity, install it. After installation, make sure that the positioning pin of the pump core is fixed on the positioning hole of the pump casing. In order to prevent the seals from being trimmed, the connection angle of the pump casing should be tightened gradually and evenly.

4. When adjusting the direction of the oil pump inlet and outlet, as long as the fixed screw of the pump casing is unscrewed, you can rotate the upper pump casing, rotate the guide to the required position and then tighten the screw; The positioning holes of the pump casing are misaligned or the sealing rings at the connection of the upper and lower pump casings are misaligned.

5. When installing the oil pump, first check whether the sealing ring of the oil pump inlet and outlet flanges and all pipes are aging and deformed. At the same time, the inner wall of the oil inlet pipe should be cleaned of dirt, and the sealing performance of each connection of the oil inlet pipe should be checked.

6. Check whether the shaft and bearing of the motor are deformed and worn. If the shaft swings, you should confirm whether the shaft is deformed or the bearing is worn, to prevent the problem of the motor from affecting the life of the pump.

7. Check whether the coupling is worn and deformed, whether the pump shaft is concentric with the motor shaft after the oil pump is installed, the simple method is to turn the coupling by hand to feel the rotation strength is even and flexible.

8. Before starting the motor, check whether the hydraulic oil in the oil tank is sufficiently clean and whether the filter screen is deformed and clean. It is recommended to thoroughly clean the oil tank and replace with new hydraulic oil and filter screens that meet the standards. The body is filled with hydraulic oil; loosen the exhaust valve of the oil pump outlet to remove the air in the pump body and pipeline, and perform a jog start when there is no load, and then tighten the exhaust valve or oil outlet after normal operation Connector.

9. During the operation of the oil pump, pay attention to whether the oil level, oil temperature, operating pressure, etc. meet the requirements of use. The oil level after normal work is generally higher than the top of the filter by more than 50mm, otherwise the oil pump is easy to suck and produce noise It is best to control the oil temperature below 60 degrees Celsius to prevent the oil temperature from being too high and damaging the protective oil film formed on the friction surface.



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Internal Gear Pumps are very versatile and can pump many different types of fluids in a variety of viscosity and temperature ranges. Internal gear pumps use two gears to deliver fluid. The rotor gear is located outside and the smaller idler is nested inside.

When the rotor (outer) gear rotates, it drives the idler (inner) gear. When the idler is out of contact with the rotor gear, liquid is drawn into the pump and flows along the pump casing to the discharge side of the pump, where the gear teeth mesh together and force fluid out of the pump.

Internal gear pumps are ideal for high viscosity fluids. They are also very useful for situations requiring low NPSH. Because there are only two moving parts, maintenance costs are also very low.

Internal gear pumps are not suitable for large solids. Because of their small manufacturing tolerances, large solids can easily damage the pump. They can handle some small suspended solids in abrasive liquids, but it is recommended that this will cause the pump to wear and lose performance.

This is just a short list of applications where internal gear pumps can be used.
Food (corn syrup, oil, nut spread, chocolate)
Dairy products
Personal care products (paste, cream, soap)
Various oils and lubricants
Paint, pigment, ink

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The increasing global population has put a lot of pressure on the industrial sector. Industries such as manufacturing, agriculture, mining, and construction are forced to operate at speeds to meet the growing demand of a growing population. Therefore, stakeholders have seen the need to increase productivity while trying to balance the costs involved in increasing production. In line with this requirement, participants in these industries are innovating machines such as automatic and vane pumps that will increase energy production while consuming limited natural resources. So, how do these vane pumps work to increase the efficiency of cars and superchargers?


Vane pump mechanism

The rotary vane pump, or vane pump for short, works on the principle of positive displacement. The pump consists of the installed rotor, outlet, inlet valve and vanes installed in the pump casing. They all converge to the center under the action of spring force. The intake valve is a vacuum safety device. The pump uses an electromagnetic motor. According to the size of the rotor and cylinder, the device can reach a large volume per minute, and can quickly obtain a higher vacuum. The machine uses a special oil to run smoothly and obtain high vacuum and maximum vacuum.

The blades are fixed on a central drive shaft, which allows it to rotate in the chamber. The length of the blade is variable and slides in and out of the chamber to maintain contact with the casing of the chamber. The rotation of the blades creates chambers of different sizes. The fluid is forced to enter through the largest chamber, and then the blades retract as they continue to rotate, thereby reducing the size of the chamber. Then, the fluid is discharged through the discharge port through the smallest chamber. Every revolution in the chamber will discharge a constant volume of fluid.

advantage

The design of the system has various advantages in terms of boost efficiency. The pump can process low-viscosity fluids such as LPG, refined fuel, liquid carbon dioxide and refrigerant under high pressure, and can be idling for a short time, and can form a good high vacuum.

As mentioned earlier, the goal is to increase the energy produced while keeping it in balance with the amount of fuel consumed. Rotating blades can self-adjust to maintain internal clearance. This mechanism ensures that very low energy is wasted and generates more electrical energy with limited energy consumption levels. The result is an engine with greater power, greater power, reduced greenhouse gas emissions and higher output.

Relationship with supercharger

In a supercharger, the pressure or density of air increases when it is supplied to an internal combustion engine. This allows more oxygen to enter the engine, burning more fuel and increasing power. For positive displacement pumps (such as vane pumps), the amount of air delivered per revolution is fixed at almost all speeds, so the required power can be maintained.

In the automotive industry, vane pumps are essential. Pumps play an important role in braking systems, automatic transmissions, and brakes other than supercharging.



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