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When using the vane pump, do you often encounter oil entrapment, oil leakage or other vane pump failures, causing the entire system to be unable to operate according to its own design, causing the vane pump to be used during the day and engineers to work overtime to repair the vane pump at night? Now let's talk about the characteristics of vane pump. After understanding these characteristics, the failure of vane pump can be solved according to these characteristics.

1. Eccentricity exists between rotor center and stator center. Changing the eccentricity between stator and rotor can change the flow rate. When the eccentricity is reversed, the oil absorption direction is also reversed.

2. Oil trap exists. In order to prevent the communication between the oil suction chamber and the oil discharge chamber, the sealing angle between the oil suction window and the oil discharge window of the distribution plate is slightly larger than the included angle between two adjacent blades. When the above-mentioned sealed volume changes, oil entrapment will occur. Interception of oil by single-acting vane pump is not too serious. By opening a triangular groove at the edge of the oil discharge window of the distribution plate, the phenomenon of oil entrapment can be eliminated.

3. The top of the blade in the oil pressure chamber is affected by pressure oil. The blade should be pushed into the rotor slot. In order to ensure reliable contact between the top of the blade and the inner surface of the stator, the bottom of the blade on one side of the oil pressure chamber is communicated with the oil pressure chamber through a special groove. The bottom of the blade on one side of the oil suction cavity is communicated with the oil suction cavity, and the blade is supported on the inner surface of the stator only under the action of centrifugal force.

4. The blades are installed backward along the rotation direction. As can be seen from the above figure, the blades can only be attached to the stator surface by centrifugal force. Considering the Coriolis inertial force on the blade, the resultant force of the friction force between the blade and the stator and the centrifugal force of the blade is as consistent as possible with the inclination direction of the slot, so as not to affect the extension of the blade due to the lateral component force, so the rotor slot inclines backward, usually by 20 degrees.

5. The rotor bears radial force, the radial hydraulic pressure on the rotor of single-acting vane pump is unbalanced, and the bearing load is relatively large. When the normal back inclination angle is 24, the increase of pump working pressure is limited.

For more questions, please call:China vane pump.

I believe most users understand that for VQ pump, the displacement and output flow can be changed as long as the inclination angle of the swash plate or the swing angle of the cylinder body is changed , so as to realize the speed regulation of the hydraulic motor or hydraulic cylinder, which is an important characteristic of VQ vane pumps.

Do you know about the adjustment of VQ vane pump? The following Hongyi hydraulic pressure will give you a detailed explanation of the adjustment knowledge of VQ vane pump as follows:

1. The adjustment can be continuous and stepless, or can be carried out without stopping during the working process of the hydraulic system.

2. Speed regulation is realized by changing displacement to volume speed regulation. Compared with another so-called throttling speed regulation, this method has less power loss, avoids system heating, and is very suitable for high-power systems.

3. The rigid pressure-flow characteristic of positive displacement pump is very valuable for hydraulic transmission, but it often conflicts with the requirement of flow regulation. Therefore, it is necessary to reform the original pressure-flow characteristic of positive displacement pump. This is the task of the variable adjustment mechanism.

4. There are various power sources and control methods to push the variable mechanism in the 4.VQ vane pump, but they can be divided into two types:

One is to directly adjust or control the variable mechanism by external force or external signal.

The other is to use the working parameters of the pump itself such as flow rate, pressure and power as signals to realize feedback control of the flow rate, pressure and power through changing and controlling the displacement of the pump and to carry out automatic adjustment.

Taizhou Hongyi Hydraulic Servo Technology Co., Ltd. is the leading manufacturer of high performance vane pumps in China.

Please contact us for more information: China vane pump.

Servo system, also called servo system, is a feedback control system used to accurately follow or reproduce a certain process. Servo system is an automatic control system that enables the output controlled variables such as the position, orientation and state of the object to follow any change of the input target (or given value).

Its main task is to amplify, transform and regulate the power according to the requirements of the control command, so that the torque, speed and position control output by the driving device are very flexible and convenient.

Benefits of vane pumpApplied to Servo System;

1. Apart from low noise and pressure pulsation, vane pump has more important points: mature technology and low product price.

2. The pressure of the high-pressure vane pump can reach 26.5 MPa, which is comparable to that of the plunger pump.

3. Compared with the above three vane pumps with different pressure levels, the 25VQH series high pressure vane pump is undoubtedly one of the most ideal oil pumps. If the pressure is not high and there are special requirements for noise, then QHP series vane pump is the most suitable product.

4. Vane pump products are mature, technically perfect and cheap. There is no need to develop new vane pumps.

In today's energy-saving hydraulic equipment, how to select the type and how to apply it is really a matter of the eight immortals crossing the sea. Gear pump, vane pump and plunger pump have their own characteristics, but they are by no means unique to gear pump. Vane pump has a very wide application prospect. The application of vane pump in servo field is just beginning, and it is possible to dig out new characteristics. It is still to be worked hard by vane pump workers.

For more information, please click here: servo vane pump.

In general, during the use of Vickers vane pump, most users will encounter the failure of buffer function of hydraulic cylinder of VQ vane pump, right? How can we analyze the reasons for such a phenomenon?

Today, Hongyi Hydraulic Technician will tell you about the cause analysis and solution of the failure of the buffer function of Vickers vane pump hydraulic cylinder as follows:

First, Vickers vane pump hydraulic cylinder buffer failure analysis:

1. The buffer regulating valve is fully open.

2. Excessive inertial energy.

3. The buffer regulating valve cannot be adjusted.

4. The one-way valve is fully open or the valve seat of the one-way valve is not tightly closed.

5. The seal on the piston is damaged. When the pressure in the buffer chamber rises, the working fluid flows back from the chamber to the working pressure side, so the piston does not decelerate.

6. There are scars on the inner surface of plunger head or bushing.

7. The buffer ring embedded in the cylinder head falls off.

8. The length and angle of the conical surface of the buffer plunger are inappropriate.

Second, the Wigs vane pump hydraulic cylinder buffer failure solution:

1. Adjust to the appropriate position and tighten.

2. Appropriate buffer mechanism should be designed.

3. Repair or replacement.

4. Check the size, replace the cone valve core or steel ball, replace the spring, and match the research and repair.

5. Replace the seal.

6. Repair or replacement.

7. Replace the new buffer ring.

8. Amendments.

For more information, please contact us: https://www.vanepumpfactory.com/

Taizhou Hongyi Hydraulic Servo Technology Co., Ltd. is the leading manufacturer of high performance vane pumpsin China.

Today we will introduce a popular product of Hongyi Company: low pressure fixed displacement vane pump.

Pressure balanced structure, small axle load and long service life.

Simple structure and easy maintenance.

The pressure ring with special structure can use hydraulic oil with low combustibility and low noise.

Internal parts are easy to replace.

It is widely used in grinding machines, pressing machines, die casting machines, rubber machines, industrial mother machines, etc. It is especially suitable for low pressure pumps in high and low pressure circuits.

The assembly is easy, and the motor can be directly connected to form a motor-pump combination.

For more product details, please contact us: https://www.vanepumpfactory.com/

PV2R series vane pump is a high pressure and high performance vane pump specially developed for low noise operation. Unique design, high precision machining and reasonable selection of materials ensure its advantages of high reliability and strong adaptability, which is most suitable for the needs of modern hydraulic systems.

It is widely used in injection molding machines, pressure die casting machines, metal cutting machines, construction machinery and other hydraulic systems.

Main features of PV2R pump:

1. Reasonable design and precise machining of circular arc blades reduce the compressive stress of blades on the curves in the stator and improve the service life of the stator and blades;

2. The stator adopts an advanced high power non-impact transition curve, which enables the blades to have good motion and stress states, ensures good contact between the blades and the stator, and minimizes flow loss, pressure and flow pulsation, with lower noise and longer service life;

3. The side plates are hydraulically balanced to obtain better volumetric efficiency.

4. The key parts are made of high-quality materials and advanced heat treatment technology, thus further improving the overall reliability of the oil pump.

5. The plug-in structure is adopted. The main internal organs are made into components. The replacement of pump core can be completed in a few minutes, with good interchangeability and convenient maintenance.

For more information, please click here: https://www.vanepumpfactory.com/

Servo energy saving is the most fashionable expression at present, and how to select an oil pump has become a contradictory topic. Some say that vane pump cannot be applied to servo system because its rotation speed cannot be lower than 600 rpm, others say that it cannot be reversed, etc. In fact, these are all one-sided views. It is necessary to introduce the performance of vane pump and its application in servo field.

1.Vane pump characteristics:

High pressure, low noise, small pressure pulsation, high volumetric efficiency and so on are the most basic performances.

If the rated pressure or volumetric efficiency is not pursued, it can be kept above 50 kg between 50-100 revolutions. The reason why the vane pump can have pressure at low speed is that the extension of the vane only needs centrifugal force to be thrown out when there is no pressure at the beginning of starting. When the pressure is established, the extension of the vane is pushed out not by throwing but by the pressure at the bottom of the vane. Therefore, the vane pump can be pushed out as long as there is pressure in the vane pump.

2.How to avoid short yang long:

The minimum starting speed of vane pump is higher than that of gear pump plunger pump, but according to our actual measurement, the starting speed of gear pump with the highest application rate is also between 350 and 450, which is not much difference, because the oil absorption conditions of oil pumps are the same, the only condition for oil absorption is the vacuum degree generated by rotation inside the oil pump, and the principle of different oil pumps is the same except the size, strength and shape of parts, but the application fields are different.

If the vane pump must be started at 600 rpm or more, 1000-1500 rpm is the most ideal and 50-150 rpm is the low-speed pressure maintaining principle, which is called high-speed starting and low-speed pressure maintaining principle. The change of these conditions in the servo system belongs to pediatrics and can be easily realized.

Taizhou hongyi hydraulic servo technology co., ltd. QHP series servo pumps are independently developed products with independent intellectual property rights, and have obtained one invention patent and four utility model patents. They are widely used in servo hydraulic systems such as rubber and plastic machinery, die casting machines, shoe machines, textile machinery, etc.

If you want to know more about servo vane pump, you can click here: https://www.vanepumpfactory.com/

Consumers should know some knowledge of vane pumpreplacement to facilitate their daily operation. Taizhou Hongyi explained several points:

1. Check if the shaft seal has aging deformation. If the bearing is worn out, you should be more careful when replacing the pump.

2. When replacing the pump core, pay attention to whether the new and old pump core models correspond, and then install them after confirming the corresponding. Before installing, clean the inner wall of the pump casing, add the lubricating oil and then install the pump core.

3. When installing the oil pump, first check the sealing ring of the oil pump inlet and outlet flange and whether the pipeline is aging and deformed. At the same time, the dirt on the inner wall of the oil inlet pipe should be cleaned, and the sealing performance of each joint of the oil inlet pipe should be checked.

4. When adjusting the direction of the inlet and outlet of the oil pump, as long as the fixing screw of the pump casing is unscrewed, the upper pump casing can be rotated, and the screw can be tightened to retighten the screw; do not pull up the pump core to avoid the locating pin of the pump core. The positioning holes of the pump casing are misaligned or the sealing rings a t the connection of the upper and lower pump casings are misaligned.

5. 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 rotate the coupling by hand to feel uniform and flexible.

The vane pump supplier explained the replacement method of the vane pump pump core above, and hopes to help everyone.

Taizhou Hongyi Hydraulic Servo Technology Co., Ltd. is the leading manufacturer of high performance China vane pump. It can provide you with high quality products and services.

In order to improve the maximum working pressure of vane pump, the structural measures are as follows: the vane can not only contact with the inner surface of stator reliably, but also the contact stress between the vane and stator will not be too large to cause serious wear.

At the beginning, the maximum working pressure of vane pumps was not more than 6.3MPa. Now, some of the highest working pressures of vane pumps in the world have reached 20-30MPa. To realize the high pressure of vane pump, the following two problems must be solved.

(1) the rotor end surface and the top of the blade leakage problem.

(2) the blade and stator inner surface wear problem.

Variable vane pump let's have a brief understanding. If you are interested in understanding, please look at the following contents together. I hope it will be helpful to you.

1. It has the functions of automatic high-speed flow and compensation under pressure setting. Compared with fixed vane pump, it has less power loss and lower heat generation. It is a high-efficiency vane pump that saves energy and is the best choice for system design engineers in high-efficiency circuits.

2. The operation is balanced and quiet, especially suitable for machine tools and indoor requirements.

3. It contains a pressure adjusting mechanism. The system may not need a pressure regulating valve and is suitable for direct motors. It is easy to assemble.

4, equipped with a variety of different pressure and flow range, available for arbitrary choice.

For more information, please contact us: https://www.vanepumpfactory.com/

There should be many friends who have encountered this kind of problem when the vane pumpis stuck in use. How should we solve this problem? We will explain it to you in the following content.

1. It may be that the axial clearance or radial clearance inside the pump body is too compact.

2. It may be that the concentricity of gear pump cover plate and shaft does not conform to the size that can be specified; Solution: The cover plate can be replaced to make it concentric with the shaft.

3. It is possible that the concentricity adjustment of pump and motor coupling is not in place; Solution: You can adjust the distance between the concentricity of the pump shaft and the motor coupling. The specified distance cannot exceed 0.01 mm.

4. It may be due to the failure of the pressure valve; Solution: A new pressure valve can be replaced.

5. It is possible that the vane pump contains some impurities. Solution: Fine silk screen can be used to filter out some dirt from engine oil.

If you have any questions during the use of vane pump, please consult us: https://www.vanepumpfactory.com/

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