Basic Info.
Structure
Rotary Vacuum Pump
Exhauster Method
Positive Displacement Pump
Product Description
2X type rotary vane vacuum pump is a basic equipment used to extract the gas in a specific sealed container, so that the container can obtain a certain vacuum. Due to the high development of modern science and technology, vacuum pumps are used in various scientific fields and various enterprises and undertakings. It can be used for scientific research, production and teaching in scientific research institutions, colleges and universities, industrial and mining enterprises in metallurgy, chemical industry, light industry, petroleum, medical, pharmaceutical, printing and dyeing, electrical appliances, electric vacuum, semiconductor, food, atomic energy, textile, etc.Product Photos:Structure Description: Figure 1 is a schematic diagram of a rotary vane vacuum pump. The rotors 3 and 7 are tangent to the high vacuum chamber 1 and the low vacuum chamber 6. The rotors 3 and 7 rotate in the direction of the arrow, which drives the rotor sliding in the rotor slot to rotate. Because the spring 9 And the action of centrifugal force, the outer end of the rotor slides against the inner surface of the high and low vacuum chambers, and the moon-shaped space formed by the rotor and the high and low vacuum chambers is moved from the intake nozzle 2 to the exhaust valve 5 and from the air pipe 4 to the exhaust. The valve 10 is separated to form two or three volumes, and the size changes periodically. When the rotary vane vacuum pump continues to rotate at the position shown in the figure, the volumes of A and C gradually increase, and the pumped volume gas does not enter the air. The nozzle enters the pump, and at the same time, the volume of B and D gradually decreases, and the pressure rises. Then, the exhaust valves 5 and 10 are opened to discharge the gas out of the vacuum chamber. valve, so it can prevent the gas from returning to the vacuum chamber. When the pumping pressure is high, the valves of the high and low vacuum chambers are exhausted, which is equivalent to a single-stage pump. When the vacuum degree is high, all the gas enters the vacuum chamber and is then exhausted by the exhaust valve 10. Enter the two-stage pump to work.
For example, when the extracted gas contains high vapor gas, when the gas is compressed and the partial pressure of its vapor exceeds the saturation pressure of the vapor at the temperature of the pump, the vapor is compressed into liquid at this time, and the rotary vane vacuum pump It cannot be discharged, but is mixed in the vacuum oil, which greatly reduces the performance of the pump. If a proper amount of air is mixed in, so that when the steam is compressed, its partial pressure is also lower than the saturated pressure of the pump temperature, the steam can be discharged out of the pump before it becomes liquid, so this series of pumps above 2X-4 All are equipped with aeration valve 11 that can put in a certain amount of gas, see Figure 1 The shape and structure of various vacuum pumps of the 2X series are basically the same. The pump is driven by the motor to the rotor through the V-belt. The motor and pump are fastened to the chassis with screw clips.
2X rotary vane vacuum pump is composed of pump body, high rotor, low rotor, front end plate, rear end plate, high rotor plate, low rotor plate, exhaust valve, exhaust hood, sight glass and other parts. See Figure 2 and Figure 3.
A middle partition is pressed into the 2X rotary vane vacuum pump, and the vacuum pump casing is divided into high and low vacuum chambers. The front end of the high rotor protrudes from the front axle; the rear end protrudes from the rear axle. The front axle is supported by bearings in the front plate, through the oil-tight chamber and out of the front plate: the rear axle is supported by bearings in the middle bulkhead. While extending into the low vacuum chamber, the low vacuum chamber rotor is installed on the rear axle, so the high and low rotors are driven by the front axle. Both the high and low rotors have bisected slots, and the "T"-shaped rotary vanes are supported by springs and installed in the slots. The air inlet of the 2X rotary vane vacuum pump has a filter screen, and the exhaust port has an oil blocking screen. There is an air aeration valve on the left side of the sight glass and an oil drain plug on the bottom. 2X rotary vane vacuum pump pumping process: as shown in Figure 2, the gas enters the high vacuum chamber from the intake nozzle. At first, the high pressure is strong, the high and low vacuum chambers are filled with atmosphere, and both exhaust valves are opened to exhaust. As the pumping progresses, the air pressure decreases (that is, the vacuum degree increases), the pressure of the high vacuum chamber is not enough to push the exhaust valve, and the gas enters the low vacuum chamber through the middle partition, and the pressure is not enough to push the exhaust valve at this time, but The low vacuum chamber enters a certain amount of oil, which helps to open the exhaust valve, and the gas is also discharged. The discharged gas is mixed with oil particles, and the oil is separated by filtering the oil screen. Only the gas is discharged from the pump. The gas path is shown in Figure 2.
The oil in the oil sealing chamber of the 2X rotary vane vacuum pump is supplied from the oil pool A through the hole on the front end plate. The oil in the low vacuum chamber is supplied from the oil pool A through the hole in the rear end plate. The oil in the high vacuum chamber is circulated and supplied from the holes in the middle partition. The sealing of the front and rear covers of the 2X rotary vane vacuum pump is made by the oil pool B on the upper part of the pump body flowing into the oil groove through the hole of the end face chamber of the pump body for sealing.Product performance and parameters:Product Application: 1. Due to the high development of modern science and technology, rotary vane vacuum pumps are used in various scientific fields and various enterprises and undertakings. It can be used for scientific research, production and teaching in scientific research institutions, colleges and universities, industrial and mining enterprises in metallurgy, chemical industry, light industry, petroleum, medical, pharmaceutical, printing and dyeing, electrical appliances, electric vacuum, semiconductor, food, atomic energy, textile, etc.
2. Since the rotary vane vacuum pump is made of ferrous metal and is relatively precise, the work of the entire pump is linked together, so the rotary vane vacuum pump is not suitable for pumping out high-oxygen, toxic and explosive materials. Various gases that corrode ferrous metals and have chemical effects on vacuum oil cannot be used as compressors and transfer pumps. If there is a pump with a gas ballast device, a certain amount of condensable gas can be removed. ,
3. The rotary vane vacuum pump can be used to directly obtain vacuum operations with a vacuum degree below 10~3 Torr, as well as to cooperate with other vacuum operations.
4. Rotary vane vacuum pumps are generally used in an environment where the room temperature is not lower than 5°C and the relative temperature is not higher than 90%.
Product Features: 1. Wide range of free-air capacities to match specific applications
2. Positive pressure oil system ensures proper lubrication and prevents oil starvation under high gas loads
3. Fast acting inlet valve protects internal components against oil and air contamination if the pump stops while under vacuum
4. Gas ballast valve limits internal condensation; Lets you use pump when condensable vapors are present.
Company Profile:
Address:
Xiaodian Industrial Park, Baita Town, Boshan District, Zibo City, Shandong Province
Business Type:
Trading Company
Business Range:
Industrial Equipment & Components
Company Introduction:
Shandong Zhongbeng Power Equipment Co., Ltd. is located in Zibo City, Shandong Province, which is known as the "pump capital" of China. The company takes the lead in science and technology, adheres to the management principles of "quality first, customer first and credit-based" since the establishment of the company and always do our best to satisfy potential needs of our customers. The products now have been exported to India, Pakistan, Russia, South Africa, Vietnam, Thailand and other countries.
Our products are widely used in petroleum, chemical industry, coal mine, metallurgy, electric power, food, medicine, paper making, textile, heating, refrigeration, urban water supply and drainage and other industries. The main products are: Vacuum pump, diesel engine pump set, diesel generator set, centrifugal pump, submersible sewage pump, chemical pump, corrosion-resistant pump and complete water supply equipment, etc. There are more than 20 series, with more than 1, 000 specifications for customers to choose from.
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