Role of Roots vacuum pump in transportation and storage

(1) Temperature crude oil is always accompanied by low molecular weight methane, ethane, propane and other hydrocarbon gases and hydrogen sulfide gas, which must be removed before storage, transportation and distillation to stabilize the crude oil. At the same time, the components of aviation gasoline, especially their isomers (hydrocarbons with high seismic performance in the tender material) are recovered and utilized. In order to reduce the excessive loss of crude oil in the process of storage and transportation, stabilize the composition of crude oil and gasoline products, and not easy to change the composition of the distillate during storage, a large vacuum crude oil stabilization device has been established in some foreign oilfields. The crude oil is degassed at a vacuum of 310-350mmhg to stabilize the crude oil.

(2) Vacuum refrigeration In order to store propane and butane separated from crude oil easily in atmospheric sickle, deep freezing was used to liquefy it in the past, but at present, many foreign manufacturers use vacuum refrigeration to evaporate the frozen part of propane in vacuum, which can easily get a low temperature below - 48 ℃. Then propane and butane are stored at - 48 ℃ and - 10 ℃ respectively Liquefaction, tank storage or transportation.

(3) After the air discharged from the oil tank is not put into the storage tank through stable crude oil, a lot of losses will be caused when the oil tank "breathes" due to the volatilization of light components. If a vacuum device is used to empty the tank, liquefied petroleum gas (propane and butane) and liquefied natural gas (methane and ethane) can be removed and recycled.

Water Ring Vacuum Pump manufacturers

Water Ring Vacuum Pump

Dry Type Oilless Vacuum Pumps

Vacuum pump in beekeeping equipment

The pulp production frame or base strip shall be covered with sterilized wet towel and sent to Qianjing disinfection room. The heightening part of the platform base shall be cut off with a quick knife sterilized with alcohol, and then the larvae shall be picked out with a bamboo or stainless steel camera, and then the king's pulp shall be dug out with No. 2 oil painting brush or small shovel made of ox horn and bamboo and put into a plastic bottle. In order to improve the efficacy of digging royal jelly and improve the sanitary conditions in the process of extracting royal jelly, a pulp aspirator can be used to absorb royal jelly.

The aspirator is a kind of equipment that absorbs royal jelly from the base by the negative pressure produced by the suction device, also known as royal jelly aspirator. The utility model is composed of a suction device, a negative pressure bottle (which is omitted by some pulp absorbers), a slurry storage bottle, a spherical suction head, a pressure rubber tube and a glass tube. The air in the negative pressure bottle, the storage bottle, the glass tube and the rubber tube is continuously pumped out by the air suction device to form a negative pressure system, so that the pulp suction head can absorb the royal jelly from the foundation into the slurry storage bottle.

The electric vacuum pump is a small electric vacuum pump (pumping rate is. 5 L / s) as a pumping mechanism, it has high vacuum degree, high pumping rate and high working efficiency. But it needs a place with electricity to use.

SSR Air Blowers Is Core Equipment In Sewage Treatment System

Air Blowers Selection Precautions

SSR Air Blowers For Oxygen Aquaculture

Operation of wet roots vacuum unit

The wet roots pump does not need the front stage pump to form a vacuum unit, and because roots pump is a constant volume type, with a large speed range, it is easy to operate, requires small power, high volumetric efficiency, and significant mechanical efficiency (no contact between parts), and can be combined with single-stage, double-stage and three-stage. This makes the wet roots pump an ideal and economical vacuum pump in the paper industry. Its operation can be divided into two situations: ① operation with water injection; ② operation with water injection first.

1. Operation with water injection: the air inhaled by the single-stage and double-stage pump is compressed and transmitted through the combined absorption and phase difference separator. A small amount of injected water flows back to the water tank installed under the muffler of the separator. The water can also be injected into the pump for use, and the heat generated by compressed air can be eliminated with only a small amount of make-up water. Some roots pumps directly suck in the water mixture, or no additional cooling water can be injected.

The vacuum pump does not absorb water when it stops working. When it is started again, it should be prevented not to start when it is full of water, otherwise accidents may occur. The injected water can be treated with polyphosphate to prevent water from depositing in the machine and causing the machine to rust.

2. Operation of water free injection: Although there is no water injection, a combined separation muffler with absorption and phase difference or standard muffler can be installed. It can be assumed that 90% of the total noise energy in this device is changed into heat and disappeared.

Rotary Vane Vacuum Pump

Dry Type Oilless Vacuum Pumps

industrial vacuum pumps,vacuum furnaces

vacuum in electron beam melting furnace

Electron beam melting furnace: the electron beam melting furnace mainly uses the huge heat energy emitted by the electron beam as the heat source for smelting or alloy. It has the same function as vacuum induction furnace and vacuum arc furnace. Due to the high cost of smelting, it is only used for melting refractory metals, active metals or alloys. Most metals are smelted in other vacuum furnaces. In some special cases, such as high temperature and strict prevention of pollution, electron beam furnace is sometimes used to melt, refine and cast ingots, and the effect is very good.

The main difference between electron beam melting furnace and vacuum electric arc furnace is that the heat source comes from the arc between electrode and consumable electrode when melting metal or alloy in vacuum arc furnace. The heat of melting various materials in the electron beam melting furnace comes from the electron beam with high energy density emitted by the electron gun. Electron beam melting can avoid the pollution of electrode and keep the molten pool, so that it can be thoroughly purified, and the shape of melting material is not limited.

Generally, electron beam melting furnace consists of electron gun chamber and melting chamber. The electron gun chamber can be discharged by mechanical pump and diffusion pump to obtain the vacuum degree of 10-4 ~ 10-6 Torr. The smelting chamber can be composed of mechanical pump, booster pump and diffusion pump, or multi-stage Roots pump can be used for exhaust to obtain vacuum degree of 10-2 ~ 10-6 Torr.

Water Ring Vacuum Pump manufacturers

Water Ring Vacuum Pump

SSR Roots Type Blowers

Vacuum check valve

Vacuum pump equipped with the vacuum check valve is also known as one-way valve or check valve, its role is to prevent the medium flow back in the pipeline. It is also a check valve. Vacuum check valve is widely used in vacuum pump.

In the process of starting and stopping the vacuum pump, the vacuum check valve can better protect the pump and the pumped system, so as to make the vacuum pump play better performance and increase the service life. The opening and closing parts open or close automatically by the medium flow and force to prevent the reverse flow of medium is called check valve.

Check valve is an automatic valve, which is mainly used in the pipeline with one-way flow of medium. It only allows the medium to flow in one direction to prevent accidents. According to the structure, vacuum check valve can be divided into lift check valve, swing check valve and butterfly check valve. Lifting check valve can be divided into vertical and horizontal two kinds.

Vacuum Unit Used In Rare Metal Metallurgy

Difference Between Engine Oil And Vacuum Pump Oil

How To Choose Butterfly Valve Correctly

Working principle of liquid ring pump

The main components of liquid ring pump are pump shell and impeller. The impeller is composed of 12 flat blades, forming a radial shape, which is eccentrically installed in the pump shell. The cross section of the pump shell is round, and the pump is filled with half volume of water. When the impeller rotates, the water is thrown to the surrounding pump wall, forming a water ring. Moreover, the water turns the blades into many closed spaces separated from each other (the impeller is installed eccentrically, and the sizes of these confined spaces are different). The upper space is small, the lower space is large, and the water ring acts as a piston made of water. The gas is inhaled from the larger space below, and the space pushed to the top by the rotating blade becomes smaller, and the gas is compressed and discharged. The suction pipe and discharge pipe are respectively installed on the two sides above the pump body, because the suction space is lower. Press out the space up, and must first suction back, so the direction of impeller rotation can only follow this direction (reverse is not allowed).

The liquid ring pump is characterized by simple and compact structure; the rotor can be directly connected with the motor without speed change device; the exhaust is uniform and the exhaust volume is large; the vulnerable parts are few and reliable; except for the bearing, other parts do not need lubrication; however, due to the existence of water and steam partial pressure in the pump, it can not produce very high vacuum degree (vacuum up to 70% ~ 90%).

Liquid ring pump is suitable for pumping gas containing liquid (especially for conveying corrosive and explosive gas).

Dry Type Oilless Vacuum Pumps

industrial vacuum pumps,vacuum furnaces

SSR Roots Type Blowers

Precautions for using vacuum compressor

① Always pay attention to the change of gas pressure and temperature at all levels, whether the temperature of lubricating oil and bearing exceeds the allowable value, and the change of current and cooling water temperature.

② Switch the oil filter regularly, check and analyze the quality of lubricating oil regularly, and replace the new oil if it does not meet the requirements.

③ Always keep the parts complete and intact, and keep the body clean and sanitary.

④ Carry out scheduled maintenance on time and implement the maintenance system seriously.

⑤ Regularly check the efficiency of oil separator and cooler, and check and repair if the efficiency is reduced.

⑥ The standby compressor should be kept in good condition. When the compressor is out of service for a long time, it should be run empty once a half month for half an hour.

Water Ring Vacuum Pump manufacturers

Water Ring Vacuum Pump

Oil Diffusion Vacuum Pump