ZJQ series air-cooled roots vacuum pump
ZJQ series air-cooled Roots vacuum pumps use an external cooler to automatically circulate the gas to cool the rotor and the pump body. The pump can work continuously under a high pressure difference without thermal overload, and the pump can directly exhaust the atmosphere. This pump has many advantages of ordinary roots vacuum pumps, and can be used in series with the backing pump or used alone. When the pump is used alone, the low-temperature air at the exhaust port can be directly used to return to the pump for cooling without using a cooler. The large pump can obtain an ultimate pressure of about 130 hPa.
When the pump is used in combination with its own or ordinary labor Roots vacuum pump, it can give full play to the advantage of the oil-free steam of the Roots vacuum pump to pollute the pumping system. The pump can also be connected in series with backing pumps such as liquid ring pumps and slide valve pumps to form a unit, which can obtain a large pumping speed close to the pumping speed of the main pump in a high pressure range. These two combinations can achieve different vacuum degrees in the range of 105Pa to 5×10-2Pa.
Is widely used in the occasions where the authority pressure is not high and requires a large pumping speed, or where a clean and oil-free vacuum is required. Power plant, chemical industry.