CN-224214377-U - Micro-oil screw vacuum pump

Abstract

The utility model relates to a micro-oil screw vacuum pump which comprises an integrated screw pump main machine, an oil-gas separator and the like, wherein the air outlet end of the integrated screw pump main machine is downwards arranged and is connected with the inlet end of the oil-gas separator through a bent pipeline, the oil-gas separator is connected with a three-way exhaust pipe, the air outlet of the three-way exhaust pipe is upwards arranged, the lower opening of the three-way exhaust pipe is connected with a lower cover and a first oil return pipe, and the first oil return pipe is connected with the integrated screw pump main machine. According to the micro-oil screw vacuum pump, oil accumulated in the exhaust port of the oil separator for a long time and oil oozed out of the outer wall of the oil core can automatically flow back to the screw machine through the oil return pipe to participate in circulation after being gathered, so that the intermediate maintenance frequency and maintenance cost of the oil separator and the oil core are reduced, the service life of the oil core is prolonged, the separation effect of the oil separator is better, the state that the oil content of exhaust is extremely tiny is achieved, and the environment-friendly requirement is met.

Inventors

• CHEN HAO

Assignees

• 格兰斯特机械设备(广东)有限公司

Dates

Publication Date

20260508

Application Date

20250605

Claims (6)

1. 1. The micro-oil screw vacuum pump is characterized in that the air outlet end of the integrated screw pump host is downwards arranged and is connected with the inlet end of the oil-gas separator through a bent pipeline, the oil-gas separator comprises a separator outer barrel, a flange barrel cover and an oil-gas filtering component arranged in the separator outer barrel, the inlet end of the oil-gas separator is tangentially arranged on the outer wall of the upper portion of the separator outer barrel, the air outlet end of the oil-gas separator is arranged on the flange barrel cover and is connected with a three-way exhaust pipe, the air outlet of the three-way exhaust pipe is upwards arranged, the lower opening of the three-way exhaust pipe is connected with a lower cover and a first oil return pipe, the first oil return pipe is connected with the integrated screw pump, and the oil-gas separator is also provided with an oil filter and an oil-gas separator.
2. 2. The micro-oil screw vacuum pump of claim 1, wherein the oil filter is connected with an oil filter temperature control valve, the oil filter temperature control valve is provided with four oil pipe connectors, one oil pipe connector is communicated with an oil outlet arranged on the side wall of the lower part of the outer barrel of the separator through a first oil pipe, the other two oil pipe connectors are respectively communicated with a pipeline arranged in a radiator at the top of the machine case through a second oil pipe and a third oil pipe, the other oil pipe connector is communicated with a host machine of the integrated screw pump through a fourth oil pipe, and the oil filter temperature control valve controls the flow direction of lubricating oil according to the oil temperature of the oil outlet of the outer barrel of the separator.
3. 3. The micro-oil screw vacuum pump of claim 2, wherein the first temperature sensor is arranged at the lower part of the outer wall of the outer barrel of the separator, and the second temperature sensor and the third temperature sensor are respectively arranged at the joints of the second oil pipe, the third oil pipe and the oil filter temperature control valve.
4. 4. The micro-oil screw vacuum pump of claim 1, wherein the oil-gas filtering component comprises an inner barrel with a flange at a barrel mouth, the inner barrel is connected with an outer barrel of the separator and a flange barrel cover through the flange, a plurality of oil core installation seats for installing oil cores are arranged on a bottom plate of the inner barrel and are respectively provided with the oil cores, an inlet of each oil core is downwards communicated with the inside of the outer barrel of the separator, a connecting through hole is further arranged at the edge of the bottom plate of the inner barrel, a sunken oil gathering pipe is connected at the connecting through hole, a second oil return pipe is further arranged on the flange barrel cover in a penetrating mode, the inner end of the second oil return pipe stretches into the bottom of the oil gathering pipe, the outer end of the second oil return pipe is communicated with the first oil return pipe through a three-way pipe and then is connected with the main machine of the integrated screw pump, and a first one-way valve is arranged in the first oil return pipe, and a second one-way valve is arranged in the second oil return pipe.
5. 5. The micro-oil screw vacuum pump according to claim 1 or 4, wherein oil supplementing ports, oil observing mirrors and oil discharging ports are arranged on the outer barrels of all separators, and a cooling fan is arranged below the radiator.
6. 6. The micro-oil screw vacuum pump of claim 1, wherein the air inlet end and the air outlet end of the horizontal filter are respectively provided with an air pressure sensor.

Description

Micro-oil screw vacuum pump Technical Field The utility model relates to the technical field of vacuum pump equipment, in particular to a micro-oil screw vacuum pump. Background In the existing oil injection screw vacuum pump unit, oil-gas separation and exhaust can be carried out on an oil-gas mixture discharged from a vacuum system through an oil-gas separator, an inner barrel of a filtering component in the barrel adopts an integral forming non-detachable mode with an outer barrel, the structural mode is inconvenient for replacement of an oil core (an oil-gas separation filter element) and cleaning and maintenance of the barrel body, the oil core can generate greasy dirt on the outer wall in the use process, oil is accumulated on a bottom plate of the inner barrel, the problems of easy occurrence of greasy dirt or coking and the like can not be timely eliminated, the accumulated oil content in exhaust is not standard due to more influence on the filtering effect, in addition, accumulated part of lubricating oil is attached to an exhaust port of the oil-gas separator for a long time along with the working time, and is easy to flow back into the filtering component due to the fact that the lubricating oil is not timely eliminated, and the service life of the separation filter element is shortened. Disclosure of utility model The utility model aims to solve the problems and provide a micro-oil screw vacuum pump. The utility model is realized by the following technical scheme that the micro-oil screw vacuum pump comprises a base, a case, an integrated screw pump host arranged on the base, an oil-gas separator arranged on the base and connected with the air outlet end of the integrated screw pump host, a control cabinet arranged on the base, and a radiator arranged on the top of the case, wherein the air inlet end of the integrated screw pump host is upward and is sequentially connected with an air inlet valve, a horizontal filter and a check valve, and the check valve is provided with an air inlet; The air outlet end of the integrated screw pump main machine is downward arranged and is connected with the inlet end of the oil-gas separator through a bent pipeline, the oil-gas separator comprises a separator outer barrel, a flange barrel cover and an oil-gas filtering component arranged in the separator outer barrel, the inlet end of the oil-gas separator is tangentially arranged on the outer wall of the upper part of the separator outer barrel, the air outlet end of the oil-gas separator is arranged on the flange barrel cover and is connected with a three-way exhaust pipe, the air outlet of the three-way exhaust pipe is upward arranged, the lower opening of the three-way exhaust pipe is connected with a lower cover and a first oil return pipe, the first oil return pipe is connected with the integrated screw pump main machine, and an oil filter is further arranged on the side of the lower part of the oil-gas separator and is connected with the integrated screw pump main machine, the oil-gas separator and a radiator. The oil filter is connected with an oil filter temperature control valve, the oil filter temperature control valve is provided with four oil pipe connectors, one oil pipe connector is communicated with an oil outlet arranged on the side wall of the lower part of the outer barrel of the separator through a first oil pipe, the other two oil pipe connectors are respectively communicated with a pipeline arranged in a radiator at the top of the chassis through a second oil pipe and a third oil pipe, and the other oil pipe connector is communicated with an integrated screw pump host through a fourth oil pipe; The lower part of the outer wall of the outer barrel of the separator is provided with a first temperature sensor for monitoring the temperature of lubricating oil in the barrel, namely the oil outlet temperature of the oil outlet of the outer barrel of the separator, and the joints of the second oil pipe, the third oil pipe and the oil filter temperature control valve are respectively provided with a second temperature sensor and a third temperature sensor for respectively monitoring the temperature of the lubricating oil before and after passing through the radiator. The oil-gas filtering assembly comprises an inner barrel with a flange at a barrel opening, wherein the inner barrel is connected with an outer barrel of the separator and a flange barrel cover through the flange, a plurality of oil core installation seats for installing oil cores are arranged on a bottom plate of the inner barrel and are respectively provided with the oil cores, an inlet of each oil core is downwards communicated with the inside of the outer barrel of the separator, a connecting through hole is further formed in the edge of the bottom plate of the inner barrel, a sunken oil collecting pipe is connected to the connecting through hole, a second oil return pipe is further arranged on the flange barrel cover in a penetra