Oil free vacuum pump is a kind of mechanical vacuum pump that can operate without any oil lubrication. It has the advantages of simple structure, small volume, easy installation, convenient movement, easy operation, convenient maintenance, no pollution to the environment, and good durability of the product. It is a vacuum pump, compression and two-purpose vacuum pump. It is a kind of basic equipment which is widely used to obtain vacuum. The oil-free vacuum pump mainly includes rotary vane vacuum pump, claw vacuum pump, screw vacuum pump, scroll vacuum pump, piston vacuum pump, etc. EVP vacuum pump manufacturer introduces the working principle of oil-free piston pump in detail for you today.
When the oil-free piston vacuum pump works, the volume of the cylinder changes repeatedly by the reciprocating action of the piston in the cylinder, so as to suction and discharge the fluid.
Oil free piston vacuum pump, also called reciprocating pump vacuum pump, is divided into single cylinder and multi cylinder from the structure, which is characterized by high lift. It is suitable for transporting oil emulsion without solid particles at normal temperature. It is used in oil field, coal seam water injection, oil injection, oil production, power pump of bore press hydraulic press, hydraulic sand cleaning, ammonia liquid transportation in fertilizer plant, etc. If the flow passage parts are made of stainless steel, corrosive liquid can be delivered. In addition, according to different structural materials, it can also transport high temperature tar, slime, high concentration mortar, high viscosity liquid, etc.
The oil-free piston vacuum pump is suitable for high pressure and small flow situations, especially when the flow is less than 100 m3 / h and the discharge pressure is greater than 9.8 MPa, which shows its high efficiency and good operation performance. It has good suction performance. It can pump liquid with different medium and viscosity. Therefore, it is widely used in petrochemical industry, machinery manufacturing industry, papermaking, food processing, pharmaceutical production, etc. Low and medium speed piston pump has low speed, which can be operated by manpower and dragged by livestock. It is suitable for rural water supply and small-scale irrigation.
Oil free piston vacuum pump characteristics and working principle:
The oil-free piston vacuum pump moves forward and backward through a fixed seal. The reciprocating motion of the piston pump makes the working volume of the pump cavity change periodically, so as to realize the suction and discharge of liquid. The seal of the plunger pump is installed on the plunger through a smooth cylinder wall. It is mainly a pump that uses the plunger to move back and forth in the pump cylinder body, so as to change the volume between the plunger and the pump wall, repeatedly suction and discharge liquid and increase its pressure. Generally, the plunger pump has better initial use characteristics, which has the advantages of high rated pressure, compact structure, high efficiency and convenient flow regulation.
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