CN215949822U - Oil injection screw vacuum pump - Google Patents
Oil injection screw vacuum pump Download PDFInfo
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- CN215949822U CN215949822U CN202121129002.2U CN202121129002U CN215949822U CN 215949822 U CN215949822 U CN 215949822U CN 202121129002 U CN202121129002 U CN 202121129002U CN 215949822 U CN215949822 U CN 215949822U
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Abstract
The utility model discloses an oil injection screw vacuum pump, which comprises a pump box and a main machine arranged in the pump box; the main machine comprises a driving motor, a male rotor and a screw rod in transmission connection with the male rotor, wherein an output shaft of the driving motor is connected with the male rotor in an integrated forming mode, and the output shaft and the male rotor are driven to synchronously rotate through the driving motor. It has the following advantages: the performance of the main engine is improved, the spatial layout of the parts in the pump is improved, and the overall volume of the vacuum pump is reduced.
Description
Technical Field
The utility model relates to a vacuum pump, in particular to an oil injection screw vacuum pump.
Background
The vacuum pump is a device or equipment for obtaining vacuum by pumping a pumped container by using a mechanical, physical, chemical or physicochemical method, and in popular terms, the vacuum pump is a device for improving, generating and maintaining vacuum in a certain closed space by using various methods; according to the working principle of vacuum pumps, vacuum pumps can be basically divided into two types, namely a gas capture pump and a gas transmission pump, and are widely applied to industries such as metallurgy, chemical engineering, food, electronic coating and the like.
The vacuum pumps commonly used in the market comprise a water ring pump, a roots pump, a rotary vane pump, a dry screw vacuum pump, a slide valve pump, a reciprocating pump and the like. Due to the working principles and structures of various vacuum pumps, the vacuum pumps have some defects in the using process, such as high energy consumption of a water ring pump, low pumping speed of a reciprocating pump and a dry-type screw pump, and the like.
The oil injection screw pump can effectively improve the ultimate vacuum degree and increase the pumping speed through oil sealing and oil lubrication. The oil injection screw rod host comprises a host shell, a screw rod which can be rotatably connected in the host shell and a male rotor which is in transmission connection with the screw rod to drive the screw rod to rotate, and the male rotor is in transmission connection with a driving motor. At present, the existing oil injection screw vacuum pump mainly realizes the transmission connection of a driving motor and a male rotor through a coupler or belt transmission, so that the overall dimension of the vacuum pump is large, the layout is unreasonable, the leakage hidden danger is increased, the stable operation of a machine is influenced, and the operation cost of an enterprise is also increased.
SUMMERY OF THE UTILITY MODEL
The present invention provides an oil-injected screw vacuum pump which overcomes the deficiencies of the prior art as set forth in the background.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
an oil injection screw vacuum pump comprises a pump box and a main machine arranged in the pump box; the main machine comprises a driving motor, a male rotor and a screw rod in transmission connection with the male rotor, wherein an output shaft of the driving motor is connected with the male rotor in an integrated forming mode, and the output shaft and the male rotor are driven to synchronously rotate through the driving motor.
In one embodiment: the air inlet system comprises an air inlet pipeline which can be communicated with a main engine air inlet of the main engine.
In one embodiment: an air filter is communicated between the air inlet pipeline and the air inlet of the main machine.
In one embodiment: an air inlet valve is communicated between the air filter and the air inlet of the main machine.
In one embodiment: the oil-gas separation system comprises a gas barrel, an oil-gas separator is arranged in the gas barrel, an oil-gas inlet of the gas barrel is communicated with an oil-gas outlet of the main machine, the gas barrel is provided with a gas barrel gas outlet and a gas barrel oil outlet, gas and lubricating oil which are separated by the oil-gas separator are discharged through the gas barrel gas outlet and the gas barrel oil outlet respectively, the gas barrel gas outlet is communicated with an exhaust pipeline, and gas discharged from the gas barrel gas outlet is discharged out of the pump through the exhaust pipeline.
In one embodiment: the cooling system comprises an oil pump and a cooler, an oil outlet of the air barrel is communicated with the cooler, the cooler is communicated with the interior of a motor shell of the driving motor, and the interior of the motor shell is communicated with the interior of the main machine shell.
In one embodiment: the oil filter is communicated between the oil outlet of the air drum and the cooler.
In one embodiment: and the second oil filter is communicated between the motor shell and the main machine shell.
In one embodiment: this pump box is the square body, and this host computer, air intake system, oil-gas separation system, cooling system's oil pump, first oil filter, second oil filter all set firmly on the bottom of the case of pump box, and this cooler sets firmly on the roof of pump box, and this gas bucket is located the host computer homonymy with air intake system.
Compared with the background technology, the technical scheme has the following advantages:
the output shaft of the driving motor is connected with the male rotor in an integrated manner, occupied space of a coupler or a belt transmission mechanism is saved, direct driving of the male rotor by the motor is achieved, and performance of a host machine is improved. Furthermore, the layout of the whole machine is changed and adjusted, so that the structure of the machine is more compact and reasonable, leakage points are reduced, the production efficiency is improved, the production cost is reduced, and the use space of a user is reduced.
Drawings
The utility model is further illustrated by the following figures and examples.
Fig. 1 is a perspective view of an oil-injected screw vacuum pump.
Fig. 2 is a schematic perspective view of a second oil-injected screw vacuum pump.
Fig. 3 is a schematic structural diagram of the host.
Fig. 4 is a sectional view a-a of fig. 3.
Detailed Description
Referring to fig. 1 to 4, an oil-injection screw vacuum pump includes a pump box 100, a main unit 1 disposed in the pump box 100, an air intake system connected to the main unit 1, an oil-gas separation system connected to the main unit, and a cooling system connected to the main unit 1; the main machine 1 comprises a driving motor 13, a male rotor 11 and a screw 12 in transmission connection with the male rotor 11, the male rotor 11 and the screw 12 are rotationally connected to a pump box 100, and the processes of air suction, compression and exhaust of the vacuum pump are realized through the change of the volume between teeth in the meshing process of the male rotor 11 and the screw 12, so that the purpose of vacuumizing is achieved. In this case, the output shaft 131 of the driving motor is integrally connected with the male rotor 11, and the driving motor 13 drives the output shaft 131 and the male rotor 11 to synchronously rotate, so that the structure can save a transmission system (such as a coupler, a flange and the like), save coupler replacement steps, reduce capacity loss, reduce energy consumption and improve performance; the vibration and transmission loss caused by insufficient coaxiality of the motor output shaft and the male rotor are avoided, the energy efficiency is improved, and the failure rate of the vacuum pump is reduced.
The air intake system comprises an air intake duct 21, the air intake duct 21 being capable of communicating with a main engine air intake of the main engine 1. An air filter 22 is connected between the air intake duct 21 and the main unit air intake port. An intake valve 23 is connected between the air filter 22 and the main engine intake port.
The oil-gas separation system comprises a gas barrel 31, wherein an oil-gas separator is arranged in the gas barrel 31, a gas barrel oil-gas inlet of the gas barrel 31 is communicated with a host machine oil-gas outlet of a host machine, the gas barrel 31 is provided with a gas barrel gas outlet and a gas barrel oil outlet, gas and lubricating oil which are separated by the oil-gas separator are discharged through the gas barrel gas outlet and the gas barrel oil outlet respectively, the gas barrel gas outlet is communicated with an exhaust pipeline 32, and gas discharged from the gas barrel gas outlet is discharged out of a pump through the exhaust pipeline 32.
The client gas enters the air filter 22 through the air inlet pipeline 21, the filtered air can enter the vacuum pump main unit 1 through the corrugated pipe and the air inlet valve 23, the gas and the lubricating oil form an oil-gas mixture in the vacuum pump main unit 1, the gas enters the gas barrel 31 through the pipeline through the oil-gas outlet of the main unit, and the oil and the gas are separated in the gas barrel 31. The pipeline through which the gas circuit is communicated is smooth, the resistance is small, and the performance is better; the design of the air barrel 31 and the oil-gas separator is enlarged, so that the oil-gas separation effect is better.
The cooling system comprises an oil pump 41 and a cooler 42, wherein an air drum oil outlet of the air drum 31 is communicated with the cooler 42, the cooler 42 is communicated with the inside of a motor shell of the driving motor, and the inside of the motor shell is communicated with the inside of a main machine shell. A first oil filter 43 is also included, the first oil filter 43 being connected between the gas tank outlet and the cooler 42. A second oil filter 44 is also included, the second oil filter 44 being in communication between the motor housing and the main machine housing.
Lubricating oil obtained after being separated by the oil-gas separator in the air barrel 1 is filtered by the first oil filter 43 and then enters the cooler 42 for cooling under the action of the oil pump 41, the cooled lubricating oil enters the motor shell to cool the motor stator and the motor rotor, and then the lubricating oil of the cooling motor enters the second oil filter 44 for filtering, enters the host machine shell after being filtered, and cools the lubricating screw 12 and the male rotor 11. The oil circuit system is simple and compact in structure and reasonable in layout, the length of a pipeline is greatly reduced, the on-way pressure loss of lubricating oil is reduced, and the running stability of the vacuum pump is improved.
In this embodiment, the pump box 100 is a square body, the main unit 1, the air intake system, the oil-gas separation system, and the oil pump 41, the first oil filter 43, and the second oil filter 44 of the cooling system are all fixed on the bottom of the pump box 100, the cooler 42 is fixed on the top of the pump box 100, and the air barrel 31 and the air intake system are located on the same side of the main unit 1.
The vacuum pump improves the overall performance of the vacuum pump and reduces the overall volume of the vacuum pump by changing the connection structure of the motor output shaft 131 and the male rotor 11, improving the air path and oil path design of the main engine 1, the air inlet system, the cooling system and the oil-gas separation system of the vacuum pump and reasonably arranging other doors in the pump box.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the utility model, which is defined by the appended claims and their equivalents.
Claims (9)
1. An oil spout screw vacuum pump which characterized in that: comprises a pump box and a host machine arranged in the pump box; the main machine comprises a driving motor, a male rotor and a screw rod in transmission connection with the male rotor, wherein an output shaft of the driving motor is connected with the male rotor in an integrated forming mode, and the output shaft and the male rotor are driven to synchronously rotate through the driving motor.
2. An oil-injected screw vacuum pump as claimed in claim 1, characterized in that: the air inlet system comprises an air inlet pipeline which can be communicated with a main engine air inlet of the main engine.
3. An oil-injected screw vacuum pump as claimed in claim 2, characterized in that: an air filter is communicated between the air inlet pipeline and the air inlet of the main machine.
4. An oil-injected screw vacuum pump as claimed in claim 2, characterized in that: an air inlet valve is communicated between the air filter and the air inlet of the main machine.
5. An oil-injected screw vacuum pump as claimed in claim 2, characterized in that: the oil-gas separation system comprises a gas barrel, an oil-gas separator is arranged in the gas barrel, an oil-gas inlet of the gas barrel is communicated with an oil-gas outlet of the main machine, the gas barrel is provided with a gas barrel gas outlet and a gas barrel oil outlet, gas and lubricating oil which are separated by the oil-gas separator are discharged through the gas barrel gas outlet and the gas barrel oil outlet respectively, the gas barrel gas outlet is communicated with an exhaust pipeline, and gas discharged from the gas barrel gas outlet is discharged out of the pump through the exhaust pipeline.
6. An oil-injected screw vacuum pump as claimed in claim 5, characterized in that: the cooling system comprises an oil pump and a cooler, an oil outlet of the air barrel is communicated with the cooler, the cooler is communicated with the interior of a motor shell of the driving motor, and the interior of the motor shell is communicated with the interior of the main machine shell.
7. An oil-injected screw vacuum pump as claimed in claim 6, characterized in that: the oil filter is communicated between the oil outlet of the air drum and the cooler.
8. An oil-injected screw vacuum pump as claimed in claim 6, characterized in that: and the second oil filter is communicated between the motor shell and the main machine shell.
9. An oil-injected screw vacuum pump as claimed in claim 6, characterized in that: this pump box is the square body, and this host computer, air intake system, oil-gas separation system, cooling system's oil pump, first oil filter, second oil filter all set firmly on the bottom of the case of pump box, and this cooler sets firmly on the roof of pump box, and this gas bucket is located the host computer homonymy with air intake system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121129002.2U CN215949822U (en) | 2021-05-25 | 2021-05-25 | Oil injection screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121129002.2U CN215949822U (en) | 2021-05-25 | 2021-05-25 | Oil injection screw vacuum pump |
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| Publication Number | Publication Date |
|---|---|
| CN215949822U true CN215949822U (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121129002.2U Active CN215949822U (en) | 2021-05-25 | 2021-05-25 | Oil injection screw vacuum pump |
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| CN (1) | CN215949822U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024060503A1 (en) * | 2022-09-20 | 2024-03-28 | 安徽威灵汽车部件有限公司 | Oil pumping device and vehicle |
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2021
- 2021-05-25 CN CN202121129002.2U patent/CN215949822U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024060503A1 (en) * | 2022-09-20 | 2024-03-28 | 安徽威灵汽车部件有限公司 | Oil pumping device and vehicle |
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