How to repair vacuum pump

In order to avoid any doubt in the operation of vacuum pump, this paper introduces how to correct the vacuum pump: the corrosion shape of vacuum pump can be divided into total (uniform) corrosion and partial corrosion. The former is more uniform in all the surface of vacuum pump, while the latter only occurs in some parts, such as pitting corrosion, crevice corrosion, intergranular corrosion, stress corrosion, etc. 

It is one of the effective anti-corrosion methods to select polymer composite materials to carry out surface organic coating anti-corrosion of vacuum pump. It has outstanding chemical resistance function, excellent mechanical function and bonding function. Compared with the traditional welding repair of pressure vessel, it has the characteristics of simple construction, low cost, safety function and good correction function.

Scaling and cleaning of vacuum pump in the application process, due to the technical water, calcium and magnesium hardness, pH value, conductivity, total alkalinity, temperature and other factors, scaling appearance will occur, and then constitute the following damage: 1. Increase the consumption of chemicals

Trefoil Roots Blower Sealing Mode

Stainless Steel Roots Blower And Cast Iron Roots Blower Difference Between

Roots Blower In Crab Pond Culture

What are the characteristics and applications of dry vacuum pump

Dry vacuum pump makes the working volume oil-free, so it brings many benefits. First of all, it enhances the pump's reliability. Dry pumps are not affected by water vapor or dust particles as oil seal pumps, so they are more durable and require less maintenance. Reducing oil consumption also means reducing the cost of serious disposal of oil. The use of dry vacuum pumps also reduces the possible contamination to a smaller level, which may be present in the oil - affecting the performance of the pump, or in some extreme conditions. 

At present, most of the dry vacuum pumps used in the vacuum industry use oil, water or other polymers as the working medium of the pump, which plays a variety of functions such as cooling, sealing and smoothing in the pump. With the development of science and technology and the expansion of vacuum application scope, the original dry vacuum pump and its pumping system present two urgent problems: one is the backflow of the working medium of the pump pollutes the pumped container, which affects the quality and quantity of products in many cases, and increases the maintenance cost of equipment. Secondly, due to the reaction material in some process, the medium in the vacuum pump is seriously degenerated, so that the pump can not work normally.

As for the common oil-free vacuum system, although the oil sealed vacuum pump and the accessories such as cold trap or adsorption trap can be used to avoid backflow, it can not completely deal with the problem and make the system complex. The application of appropriate type of dry vacuum pump can achieve the ideal application effect.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Working principle of circulating water cooling device for vacuum unit

Pump the water in the storage tank into the water sprayer, and pump the water to the cooling water inlet of the unit 

Under the action of exhaust fan, the water evaporates on the surface, dissipates heat and cools down, and then returns to the water storage tank. The distribution of the holes on the porous plate determines the position of the water column, so that the small holes on the porous plate are evenly distributed, so that the air flow can fully contact the water column and form the surface of swallow hair as large as possible Achieve the purpose of water cooling 

Considering that the water discharged from the vacuum unit is far away from the air and the temperature difference between it and the air is relatively large, the first stage of forced cooling with air cooling is designed. The water discharged from the vacuum unit passes through the radiator first, and the radiator is placed behind the fan, and then the cool air passing through the water is blown to the radiator, so that the hot water discharged from the diffusion pump is cooled, and then returned to the water storage tank. The cooling water flow in the diffusion pump can be controlled It was observed directly in the device.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Energy saving skills of water ring vacuum pump

Water ring vacuum pump is widely used in engineering construction, chemical plant, mechanical equipment and other industries. In the whole process of application, there will be excessive energy consumption. How can we reduce the kinetic energy consumption? 

1. Change the ring and adjust the radial clearance. In order to avoid more and more improper gap between the ring and radial of centrifugal impeller, please cooperate with the product delivery indication of water ring vacuum pump to carry out adjustment.

2. The filter screen can be removed when it can be kept clean.

3. The water ring vacuum pump is installed obliquely to lower the elbow. The water ring vacuum pump is installed obliquely or the turbine shell is turned into, so that the water outlet is facing the reservoir.

4. Reduce piping. In addition to one meter of seamless steel pipe, the diesel engine can be saved by 0.21kg in 10 hours.

5. Expand the outlet diameter. If the 4-meter long 10cm water output rubber hose is replaced by 15 cm pipe, 0.5kg diesel engine can be saved in 10 hours.

6. Remove pipe blockage immediately. Dirty things in the intake, centrifugal impeller or drainage shell channel, will reduce the discharge of water.

The environmental protection and energy saving of water ring vacuum pump can not only reduce energy consumption and control cost, but also improve the application efficiency of machinery and equipment and increase the service life.

Anti Fouling Piston Vacuum Pump

Vacuum Pump Oil Mist Separator

Vacuum System In Food Vacuum Enema Machine

Difference between self suction centrifugal pump and general centrifugal pump

Self priming pump is also a centrifugal pump, it is divided into self-priming and general suction, often customers do not understand the difference between self-priming centrifugal pump and general centrifugal pump. 

The main reason is that the inlet pipe of the self-priming pump does not need to be installed with a bottom valve. After the water is filled for the first time, the water can be sucked up. There is no need to add water in the future. The pump body is larger than the centrifugal pump, Many of them have the function of water storage and life-long self-priming. Centrifugal pumps play a role of pressurization. The liquid level must be higher than the pump and can flow into the pump body before starting. If the liquid level is lower than that of the centrifugal pump, the bottom valve can only be installed at the suction inlet of the inlet pipe to fill the pump and pipeline with liquid, or install a draft tube at the inlet, such as For a centrifugal pump that has not worked for a long time, the water in the inlet pipe and pump body is basically gone when the pump is started for the second time. It is troublesome to operate again because the sealing of the inlet bottom valve of the centrifugal pump that has not been used for a long time can not achieve the effect of complete sealing, and the liquid will slowly leak back to the pool. Therefore, in the working conditions requiring self-priming function, the self-priming pump has better effect than the centrifugal pump Better. 

The self-priming centrifugal pump adopts the pump body structure of axial return liquid. The centrifugal pump body is composed of suction chamber, liquid storage chamber, scroll chamber, return hole, gas-liquid separation chamber, etc. after the centrifugal pump starts normally, the impeller will absorb the liquid stored in the suction chamber and the air in the suction pipe together, and can be completely mixed in the impeller. Under the action of centrifugal force, the liquid entrained with the gas flows to the outer edge of the scroll chamber, forming a certain thickness of white on the outer edge of the impeller Color foam tape and high speed rotating liquid ring. The gas-liquid mixture enters the gas separation chamber through a diffusion tube. At this time, due to the sudden decrease of the flow rate, the lighter gas is separated from the mixed liquid, and the gas continues to rise and discharge through the pump body outlet. The degassed liquid returns to the liquid storage chamber, and enters the impeller again through the return hole, and mixes with the gas inhaled from the suction pipe inside the impeller again, and flows to the outer edge of the impeller under the action of the high-speed rotating impeller.

As this process goes on again and again, the air in the suction pipe is continuously reduced, until the air is exhausted, the self-priming pump completes the self-priming process, and the centrifugal pump is put into normal operation. Because the centrifugal pump has this unique exhaust capacity, the self-priming pump can transport liquid containing gas without installing bottom valve. It has good sweeping function when used on cruise ship.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Installation of water ring vacuum pump

The premise of vacuum pump operation is correct installation. If it is not properly installed, there will be many faults that can not run. How should each part of water ring vacuum pump be installed? 

1、 Install the pump body and mechanical seal

The static ring part of the mechanical seal is installed on the pump body. When the static ring part of the mechanical seal is installed, it can be wetted with water and then evenly pressed into the pump body by hand. Pay attention not to use too much force! After assembly, check whether the static ring part of mechanical seal and pump body are assembled tightly. 

Press the pump body tightly on the motor and tighten the bolts. Pay attention not to damage the static ring part of mechanical seal. Install the washer into the motor rear cover, and then install the pump body, motor front cover, bearing, motor rotor and inner bearing cover into the motor housing, and lock the bolts. Install the motor fan, retaining ring, motor shield and screw in turn. After installation, the fan shield end of the motor of the pump shall face down and be vertical to the ground, and other parts of the pump shall be ready to be installed.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

What vacuum pump is used for vacuum coating

Vacuum coating technology is a new technology of material synthesis and processing. Vacuum coating equipment is an important part of coating industry. In the words of a vacuum coating entrepreneur, vacuum coating surface technology is to make "beauty" for customers' products -- more colorful and beautiful appearance. Vacuum coating technology has been widely used in metal cutting tools such as ornaments, cutting tools, molds, optical instruments, integrated circuit manufacturing, solar energy utilization, flat panel display, building glass and automobile glass, anti-counterfeiting technology, aircraft protective coating, information storage field, sensors and so on 

Rotary vane vacuum pump for vacuum coating 

The rotary vane vacuum pump is mainly composed of pump body (stator) and rotor. There are more than two blades in the rotor slot, and springs are also installed between the blades of some pumps. The rotor is eccentrically installed in the pump cavity, and the clearance between its outer edge and the top surface of the pump chamber is 2 ~ 3 μ M. When the rotor rotates, under the action of centrifugal force, the vane slides back and forth along the groove and always keeps in contact with the inner wall of the pump chamber. The pump chamber is divided into two or several chambers with variable volume. When the rotor rotates clockwise, the volume of the suction chamber connected with the suction port increases gradually from zero, and the gas pressure in the cavity decreases, and the extracted gas is continuously inhaled from the suction port. At the same time, the volume of the exhaust chamber connected with the exhaust port changes from large to small, and the gas in the suction chamber is compressed. When the gas pressure is higher than the atmospheric pressure, the exhaust valve is pushed to exhaust the atmosphere. When the rotor rotates continuously, the pump will continuously pump air.

High Vacuum Turbomolecular Pump

Magnetic Levitation Molecular Pump

Molecular Pump In Chip Manufacturing