Laboratory Vacuum Pump Price
Circulating water vacuum pump:
The circulating water vacuum pump is a kind of vacuum pump. The ultimate vacuum it can obtain is 2000-4000 Pa, and the tandem atmospheric ejector can reach 270-670 Pa. The impeller rotor is installed in the cylindrical pump casing. Its blades are forward curved. when the impeller rotates. Under the action of centrifugal force, water forms a water ring that swirls along the pump casing. The water ring runs relative to the blades. The space volume between two adjacent blades changes periodically. When the blade rotates from top right to bottom. The water between the two leaves is pushed outwards. Make the volume of this space gradually increase from small to large. It reaches the maximum when it reaches the bottom. So the gas is sucked in from the axial suction port. And when the blade rotates from the bottom to the top left. The water moves relative to the axis. The space between the two blades gradually changes from large to small. The inhaled gas is gradually compressed and finally discharged through the exhaust port. With the stable rotation of the impeller. Each volume wheel changes repeatedly. Continue the suction and exhaust process.
Models and components of circulating water vacuum pumps:
There are two types of circulating water vacuum pumps: vertical circulating water vacuum pumps and desktop circulating water vacuum pumps. There are two types of desktop circulating water vacuum pumps: SHZ-D (two meters and two taps) and SHZ-D (four meters and four taps) ), multi-meter multi-tap design, can be used individually or in parallel. The model of the vertical circulating water vacuum pump is SHZ-C. The circulating water vacuum pump is designed with circulating water as the working fluid and the principle of negative pressure generated by the jet. The pump head of the circulating water vacuum pump is made of corrosion-resistant materials, the shell is made of high-strength ABS engineering plastics, and the core motor part is a stainless steel motor shaft core, which will not rust after long-term work. The turbine ducted structure ensures the maximum water flow. Pass quickly. At the same time, the circulating water vacuum pump is equipped with a fluid muffler to reduce the friction noise between the gas and the liquid in the water. The circulating water vacuum pump adopts an all-copper coil AC motor with a cooling fan at the rear, which can work continuously. The price of vertical circulating water vacuum pump is between 200-700 US dollars, and the price of desktop circulating water vacuum pump is between 200-500 US dollars.
Rotary Vane Vacuum Pump:
The rotary vane vacuum pump is a small and medium-sized laboratory vacuum pump, which is divided into a single-stage rotary vane vacuum pump and a two-stage vacuum pump. The two-stage rotary vane vacuum pump connects two single-stage pumps in series in structure. The rotary vane vacuum pump can be used as a booster pump, a diffusion pump, a molecular pump and a backing pump of a titanium pump, or it can be used alone. The rotary vane vacuum pump is the basic equipment for obtaining vacuum, which can be used alone or as the backing pump and pre-pumping pump of the high vacuum system.
Working principle of rotary vane vacuum pump:
The working performance of the rotary vane vacuum pump is composed of high pressure stage and low pressure stage. The working environment of the rotary vane vacuum pump: the temperature is within the range of 5℃-40℃, the relative temperature is not more than 90%, and the air inlet pressure is less than 1333Pa. Continuous operation. There are six types of rotary vane vacuum pumps: 2XZ-8B, 2XZ-15B, 2XZ-0.5, 2XZ-1, 2XZ-2, 2XZ-4. The rotary vane pump is mainly composed of a pump body, a rotary vane, an end cover and a spring. The rotary vane vacuum pump is small in size, light in weight, low in noise and easy to start. In addition, there are measures to prevent oil return (2XZ-8) and no measures to prevent oil leakage from oil seals and contaminate the site. The price of rotary vane vacuum pump is 100-200 US dollars, and the price is relatively cheap.
Diaphragm vacuum pump:
Laboratory diaphragm vacuum pumps are often used with rotary evaporators. The diaphragm pump performs operations to change the fluid flow by accepting the control signal output by the modulation unit. The diaphragm pump has four types: plastic diaphragm pump, aluminum alloy diaphragm pump, cast iron diaphragm pump, and stainless steel diaphragm pump. On special occasions, it can pump various media that cannot be pumped by conventional pumps, such as nitrile rubber, fluororubber, polytetrahexaethylene and other liquids, which basically meet the requirements of conventional solvents.
The motor of the diaphragm vacuum pump moves in a circular motion, and the diaphragm inside the pump moves back and forth to compress and stretch the air in the pump cavity to form a vacuum. The diaphragm vacuum pump produces a pressure difference between the suction port and the external atmospheric pressure. Under this action, the gas is sucked into the pump cavity and then discharged from the exhaust port. Diaphragm vacuum pumps are divided into DP series and MPC series. The detailed models are: DP-01-20, MPC, MPC201 T, MPC301 Z, MPC601 T, MPC1201 T.Diaphragm vacuum pumps range in price from $500-$10,000.
The advantages of diaphragm vacuum pump:
1. Diaphragm vacuum pump does not need any working medium when working, and will not produce pollution at the same time. Filtered materials are installed in the gas exchange chamber to ensure the purity of the air.
2. The diaphragm vacuum pump is easy to move and work smoothly, and it can also ensure the vacuum degree and air flow rate required by the experimental environment.
3. Diaphragm vacuum pump adopts frictionless membrane movement, no heat is generated during use, and there is no friction loss. The diaphragm of diaphragm vacuum pump is made of imported rubber, which is corrosion-resistant and has a long service life.
4. There is a self-cooling and exhaust system in the diaphragm vacuum pump body, which can ensure the continuous operation of the vacuum pump for 24 hours
5. The diaphragm vacuum pump adopts a pressure-adjustable design, which can meet the vacuum degree and gas flow rate required by the experiment.
6. The bearing of the diaphragm vacuum pump adopts the classic bearing, which can achieve smooth operation, low noise and high work efficiency.
