Imported vortex pump

Vortex pump is also called vortex pump, regeneration pump, etc. It is called vortex pump because it sucks and discharges liquid by the action of vortex motion caused by the rotation of impeller. According to different types, vortex pump can be divided into single-stage vortex pump, centrifugal vortex pump, stainless steel vortex pump and other vortex pumps.

At present, the flow rate of general vortex pump is 0.2 ~ 27m3 / h. The working principle of general vortex pump when the prime mover drives the impeller in the pump to rotate through the shaft, the liquid enters the flow passage from the suction population, and is impacted by the centrifugal force of the rotating impeller, falling into the surrounding annular flow passage, so that the liquid rotates in the flow passage. Because every liquid particle is affected by centrifugal force, the liquid inside the impeller is more affected by centrifugal force, while the liquid inside the runner is less affected by centrifugal force. Because of the different magnitude of centrifugal force, the liquid makes longitudinal vortex motion. The liquid circulates through the passage between the blades many times in the passage by the longitudinal vortex. Every time the liquid passes through the passage between blades, the lift will be increased once, and finally the liquid will be squeezed out and discharged from El.

After the liquid is discharged, a local vacuum will be formed in the passage between the blades, and the liquid will continuously enter the impeller from the suction port, and repeat the above movement process. In this way, the vortex pump sucks the liquid at the same time and discharges the liquid at the same time, so as to work continuously. It can be seen from the working principle of general vortex pump that it is like the function of multi-stage centrifugal pump. Each blade passage is equivalent to one stage, and the energy increases once the liquid passes through the passage. Therefore, the head of general vortex pump is 2-5 times larger than that of centrifugal pump under the same impeller diameter, so it is a high head and small flow pump. Compared with the centrifugal pump with the same performance, the volute pump is smaller and lighter; compared with the volute pump with the same head, the volute pump has much smaller size and simpler structure. So the general vortex pump has the advantages of simple structure, compact, small volume, light weight and low cost

Water Ring Vacuum Pump

Dry Type Oilless Vacuum Pumps

Rotary Vane Vacuum Pump

magnetic drive pump advantages and disadvantages

The magnetic drive pump uses the magnet to attract the ferromagnetic material and has the magnetic effect between the magnet or the magnetic field; the non ferromagnetic material does not affect or rarely affects the magnitude of the magnetic force, so it can carry out the power transmission through the non-magnetic conductor (isolation sleeve) without contact, this kind of transmission device is called the magnetic coupling. The motor is connected with the external magnetic steel through the coupling, and the impeller is connected with the internal magnetic steel. A fully sealed isolation sleeve is arranged between the outer magnetic steel and the inner magnetic steel to completely separate the inner and outer magnetic steel, so that the inner magnetic steel is in the medium, and the rotating shaft of the motor directly drives the impeller to rotate synchronously through the suction of the magnetic pole between the magnetic steel.

Its main advantages: because the transmission shaft does not need to penetrate into the pump housing, but uses the magnetic field to drive the inner rotor through the air gap and the thin-wall transmission torque of the isolation sleeve, so the leakage channel of the shaft seal is fundamentally eliminated, and the complete seal is realized; the transmission power has the function of overload protection; in addition to the high requirements of magnetic materials and magnetic circuit design, the technical requirements of other parts are not high; The workload of maintenance and repair of magnetic drive pump is small.

Its main disadvantages: the efficiency of the magnetic drive pump is lower than that of the ordinary centrifugal pump; the material and manufacturing requirements of the isolation sleeve against single side leakage are higher; because of the limitation of the material and magnetic drive, the magnetic drive pump is generally only used to transport the medium below 100 ℃ and 1.6Mpa in China; Due to the poor wear resistance of the isolation sleeve material, the magnetic drive pump is generally used to transport the medium without solid particles; the coupling has a high centring requirement, and the improper centring will lead to the damage of the bearing at the inlet and the wear of the isolation sleeve against single side leakage.

Resistance Vacuum Gauge Type

Vacuum Gauge Calibration Method

How To Choose Vacuum Gauge

Troubleshooting of vacuum degree of imported vacuum pump

Vacuum degree indicates the thinness of gas in vacuum state. It is usually expressed in terms of absolute pressure and relative pressure. If the pressure in the measured equipment is lower than atmospheric pressure, a vacuum gauge is required for pressure measurement. The value read from the vacuum gauge is called vacuum degree.

The reason for the vacuum failure of the imported vacuum pump is not the only one, and our detection method is very single. The whole system has only one vacuum meter, which can only reflect the final pumping result of the system, but not the process quantity of each unit at a certain time, which brings a lot of inconvenience to the troubleshooting and increases the troubleshooting time.


At present, the troubleshooting method is basically elimination method, and the steps are as follows:

1. Determine the accuracy of the vacuum degree instrument of the imported vacuum pump;

2. Ensure that the system shut-off valve is free of leakage;

3. If the fault is the manifestation of phenomenon I, it is necessary to check the external leakage of the whole system;

4. If the fault is the manifestation of phenomenon II, first check whether the parameters of steam, water and other energy media are abnormal. If not, check each check valve. If not, conduct system performance test to determine which stage of pump has performance problems, and check the nozzle and steam valve of the pump.

industrial vacuum pumps,vacuum furnaces

Dry Screw Vacuum Pump

SSR Roots Type Blowers

How to optimize the dry vacuum pump

Dry vacuum pump is the development trend of the industry in the future. Although there are not many vacuum pumps in use now, in addition to the high price, there are also users who don't know the imported vacuum pump well and can't see the future economic benefits brought to the enterprise. How to optimize the selection of the imported dry vacuum pump?

For these different types of imported dry vacuum pumps, we are eager to reduce their physical size. However, this is inconsistent with the pumping rate of vacuum pump, because the pumping rate of vacuum pump is directly proportional to the volume of vacuum pump, and small physical size means small volume. Of course, there is also an important factor that affects the pumping rate of vacuum pump, that is, the rotating speed. In order to match the pumping rate of small-scale vacuum pump with that of large-scale vacuum pump, it is necessary to increase its speed. There are two ways to change the speed of vacuum pump, one is to change the frequency of power supply, that is, to use frequency converter; the other is to change the transmission ratio of gearbox. Among them, the advantage of using frequency converter is that it can provide a closed-loop control, but it is easy to cause torque loss under large load. Changing the transmission ratio of the gearbox is a very economic way, of course, it can only provide a single uncontrollable speed.

Now, we can see that the dry vacuum pump has so many different designs, they have their own characteristics and advantages and disadvantages. All along, the use cost is an important factor that affects people's choice of vacuum pump. More and more vacuum pump users realize that the stability of vacuum pump operation should also be considered. Because the unexpected error of vacuum pump will cause the use efficiency of the machine to reduce, affect the production and delivery time, and even cause the scrap of processed products and damage of other parts of the machine. As the screw type design is single-stage design, compared with the multi-stage pump such as round split type, claw type and combined type, the number of parts used is reduced by 60%. This makes it have a great advantage in stability and maintenance cost in the future.

Water Ring Vacuum Pump

Dry Type Oilless Vacuum Pumps

Rotary Vane Vacuum Pump

Prolong the life cycle of imported vacuum pump

As a kind of modern industrial and agricultural production, scientific research, national defense and other industries and equipment, the imported vacuum pump is generally referred to as vacuum pump, which is powered by mechanical power equipment.

When the vacuum pump is applied in industrial production, it may slow down the operation performance of the vacuum pump due to various failures, thus reducing its one-time continuous operation cycle and affecting its life cycle. In addition, the installation and operation of the vacuum pump are not standardized, resulting in the high bearing temperature, bearing box fracture and other problems of the vacuum pump, greatly reducing the continuous operation cycle of the vacuum pump, so the maintenance personnel of the vacuum pump must often work overtime to repair and improve, which not only reduces the operation efficiency of the vacuum pump, but also greatly increases the production of finished products.

In fact, we can take some simple ways, such as innovating the equipment, guiding the operators to use the equipment in a standard way, regular maintenance and inspection of the equipment, regular lubrication of the equipment, and applying new technologies to improve the operation performance and prolong the life cycle of the vacuum pump.

Roots Blower Installation Conditions

How To Improve The Vacuum Of Vacuum Pump

How To Choose Vacuum Pump For Vacuum Drying

Nine advantages of screw vacuum pump in chemical fluid process

The application of screw vacuum pump is more and more extensive, but we only know a little about screw vacuum pump. There are many people who only know the application in one industry. But these understandings are all unilateral. Today we will discuss 9 advantages of screw vacuum pump in the application of chemical fluid transmission:

1. Can handle all kinds of flow, pressure, liquid type and viscosity.

2. Even if there are different back pressures due to viscosity changes, the flow rate is stable.

3. Large scale and overall operation efficiency, reduce operation cost.

4. Production or capacity can be controlled by higher pump speed ratio.

5. Low internal speed.

6. Self suction operation and good suction characteristics.

7. Small mechanical vibration, long service life.

8. Inherent smooth and quiet operation characteristics.

9. Extremely low pulsation, reduce stress and extend service life of related fluid delivery components (pipes, hoses, seals, bearings, etc.).

Dry Scroll Vacuum Pump

Dry Screw Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Import vacuum pump in aquaculture

With the improvement of economic level and the progress of science and technology, aquaculture has become one of the important economic industries in China. The scale of aquaculture is conducive to reducing the import of China's aquatic products, increasing the export volume and improving the production enterprises of China's aquatic products. These benefits also promote the development of regional economy, realize the sustainable development of economy and solve the employment problem. At present, there are still some problems in aquaculture in China. In order to transport live fish without damage to the fish body, the application scheme of imported vacuum pump in aquaculture has been formulated.

With the rapid development of aquaculture in China, various advanced water treatment technologies have been widely used, including the application of imported vacuum pump in aquaculture.

The layout of the pump body of the imported vacuum pump determines the overall structure of the pump. The vertical structure of inlet and outlet is horizontal, which is convenient for assembling and connecting pipes. However, the pump has a high center of gravity and poor stability at high speed, so this type is mainly used for small pumps.

The inlet of the horizontal pump is at the top and the outlet is at the bottom. Sometimes it is convenient to install and connect the pipes of the vacuum system, and the exhaust port can be taken out from the horizontal direction, that is, the directions of the air inlet and the exhaust are perpendicular to each other. At this time, the exhaust port can be opened from the left or right direction, except one end of the exhaust pipe, and the other end is blocked or connected to the bypass valve. The pump has low center of gravity and good stability at high speed. Usually, large and medium pumps use this type of construction.

Roots Vacuum Pump

Piston Vacuum Pump

Dry Type Oilless Vacuum Pumps