CN201377428Y - Low-noise air-cooled roots vacuum pump - Google Patents
Low-noise air-cooled roots vacuum pump Download PDFInfo
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- CN201377428Y CN201377428Y CN200920116334U CN200920116334U CN201377428Y CN 201377428 Y CN201377428 Y CN 201377428Y CN 200920116334 U CN200920116334 U CN 200920116334U CN 200920116334 U CN200920116334 U CN 200920116334U CN 201377428 Y CN201377428 Y CN 201377428Y
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Abstract
The utility model provides a low-noise air-cooled roots vacuum pump, and belongs to the technical field of machinery. The utility model aims to solve the technical problem of the prior roots pump such as higher work noise under the environment of larger differential pressure. The low-noise air-cooled roots vacuum pump comprises a pump body with an air inlet and an air exhaust opening, a drive gear, a driven gear, a drive shaft, a driven shaft, a drive rotor, a driven rotor and a motor. The drive gear is meshed with the driven gear; the drive gear is sleeved at one end of the drive shaft; the other end of the drive shaft is connected with the motor; the drive rotor is arranged at the middle part of the drive shaft; a driven gear is sleeved at one end of the driven shaft; the driven rotor is arranged at the middle part of the driven shaft; an cold air return port is also formed on the lateral surface of the pump body; and the drive rotor and the driven rotor are a pair of three-blade twisted conjugate rotors. The utility model has the advantages of reasonable design, simple structure, low noise and the like.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of vacuum pump, particularly a kind of low noise air cooling Roots pump.
Background technique
Roots pump is a kind of rotary positive-displacement vacuum pump.It is developed by Roots blower.According to the difference of Roots pump operating range, be divided into the rough vacuum Roots pump of discharging directly into atmosphere again; Middle vacuum Roots pump (claiming mechanical booster pump again) and high vacuum multi-stage roots vacuum pump.In general, Roots pump has following characteristics: 1, bigger pumping speed is arranged in the pressure range of broad; 2, starting is fast, can work immediately; 3, insensitive to the dust and the water vapour that contain in the pumped gas; 4, rotor needn't lubricate, and does not have oil in the pump chamber; 5, vibration is little, and the rotor dynamic balancing condition is better, does not have outlet valve; 6, driving power is little, and mechanical friction loss is little; 7, compact structure, floor space is little; 8, during-operation service expense is low.
Therefore, Roots pump is widely used in industries such as smelting kerosene, oil, chemical industry, electronics.Roots pump contains pair of parallel axle, pair of meshing rotor, by being loaded on a pair of synchromesh gear of axle head, makes the counterrotating each other mutually of two rotors, reaches the effect of bleeding.The rotor of Roots pump generally all adopts the 8 font rotors that fall of two leaves, and such Roots pump is worked under the bigger environment of pressure reduction, will produce very big noise, seriously influences people's work environment even living environment.
Summary of the invention
The purpose of this utility model is to have above-mentioned problem at existing Roots pump, provide a kind of can be in the bigger environment of pressure reduction the less low noise air cooling Roots pump of the noise of proper functioning, generation.
The purpose of this utility model can realize by following technical proposal: a kind of low noise air cooling Roots pump, comprise a pump housing with suction port and relief opening, driving gear, driven gear, driving shaft, driven shaft, power rotor, driven rotor and motor, described driving gear is meshed with driven gear, one end of driving shaft is arranged with driving gear, the other end of driving shaft and above-mentioned motor link, above-mentioned power rotor is arranged on the middle part of driving shaft, described driven shaft one end is arranged with driven gear, above-mentioned driven rotor is arranged on the middle part of driven shaft, it is characterized in that, the side of the described pump housing also is provided with returns the cold air mouth, and above-mentioned power rotor and driven rotor are a pair of three leaf meander configuration conjugation rotors.
This low noise air cooling Roots pump is to be applied in the bigger environment of pressure reduction.Its groundwork principle is as follows, the rotation of the work zone moving axis of motor, drive the rotation of driving gear again, driving gear drives the rotation of driven gear and then drives the rotation of driven shaft, and the rotation of driving shaft and driven shaft just drives the rotation of power rotor and driven rotor like this.Air is entered in the pump housing by suction port, by the rotation of rotor the air in the pump housing is discharged by relief opening.Form an element volume between the impeller of rotor and the pump housing, because rotor adopts three leaf meander configurations, when rotor rotation, element volume opens wide to returning cold air mouth and relief opening gradually, when the pressurized gas that greatly reduce low-pressure gas and the relief opening in the element volume and return the cold air mouth are communicated with from relief opening and return cooling air system and reflux and mix the violent pressure pulsation that impact causes, and the inswept one by one inlet and outlet mouth of the impeller of rotor and both sides when returning the cold air mouth to the interference pressure pulsation of air-flow generation.The noise that has been produced when having reduced the work of this Roots pump greatly by such structure.
In above-mentioned low noise air cooling Roots pump, the described cold air mouth that returns is two, and the both sides that are positioned at the pump housing of symmetry.Returning the cold air mouth is that two quantity with rotor are consistent.
In above-mentioned low noise air cooling Roots pump, link by coupling between described motor and the driving shaft.The work of motor drives the rotation of driving shaft by coupling, drive the rotation of driving gear again, driving gear drives the rotation of driven gear and then drives the rotation of driven shaft, and the rotation of driving shaft and driven shaft just drives the rotation of power rotor and driven rotor like this.
In above-mentioned low noise air cooling Roots pump, described pump housing two ends also are provided with side cover.Make the pump housing obtain sealing by side cover.
Compared with prior art, the rotor of this low noise air cooling Roots pump adopts three leaf meander configurations, the noise that has been produced when having reduced the work of low noise air cooling Roots pump greatly; The pump housing both sides of this low noise air cooling Roots pump are provided with two and return the cold air mouth, realize discharging directly into atmosphere, do not need to connect fore pump work, can keep vacuum environment not contaminated in pumping process.
Description of drawings
Fig. 1 is the structural representation of this low noise air cooling Roots pump.
Fig. 2 is the perspective view of this low noise air cooling Roots pump rotor.
Among the figure, 1, the pump housing; 1a, suction port; 1b, relief opening; 2, power rotor; 3, return the cold air mouth; 4, driven rotor.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As depicted in figs. 1 and 2, this low noise air cooling Roots pump, comprise a pump housing 1 with suction port 1a and relief opening 1b, driving gear, driven gear, driving shaft, driven shaft, power rotor 2, driven rotor 4 and motor, driving gear is meshed with driven gear, one end of driving shaft is arranged with driving gear, the other end of driving shaft and above-mentioned motor link, power rotor 2 is arranged on the middle part of driving shaft, driven shaft one end is arranged with driven gear, driven rotor 4 is arranged on the middle part of driven shaft, the side of the pump housing 1 also is provided with returns cold air mouth 3, and power rotor 2 and driven rotor 4 are a pair of three leaf meander configuration conjugation rotors.
In this low noise air cooling Roots pump, the cold air mouth 3 that returns be two, and the symmetry the both sides that are positioned at the pump housing 1.Returning cold air mouth 3 is that two quantity with rotor are consistent.Link by coupling between motor and the driving shaft.The work of motor drives the rotation of driving shaft by coupling, drive the rotation of driving gear again, driving gear drives the rotation of driven gear and then drives the rotation of driven shaft, and the rotation of driving shaft and driven shaft just drives the rotation of power rotor 2 and driven rotor 4 like this.
This low noise air cooling Roots pump is to be applied in the bigger environment of pressure reduction.Its groundwork principle is as follows, the rotation of the work zone moving axis of motor, drive the rotation of driving gear again, driving gear drives the rotation of driven gear and then drives the rotation of driven shaft, and the rotation of driving shaft and driven shaft just drives the rotation of power rotor 2 and driven rotor 4 like this.Air is entered in the pump housing 1 by suction port 1a, by the rotation of rotor the air in the pump housing 1 is discharged by relief opening 1b.Form an element volume between the impeller of rotor and the pump housing 1, because rotor adopts three leaf meander configurations, when rotor rotation, element volume opens wide to returning cold air mouth 3 and relief opening 1b gradually, when the pressurized gas that greatly reduce low-pressure gas and the relief opening 1b in the element volume and return cold air mouth 3 are communicated with from relief opening 1b and return cooling air system and reflux and mix the violent pressure pulsation that impact causes, and the impeller of rotor inswept one by one inlet and outlet mouth 1b and both sides when returning cold air mouth 3 to the interference pressure pulsation of air-flow generation.The noise that has been produced when having reduced the work of this Roots pump greatly by such structure.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used 1, the pump housing morely; 1a, suction port; 1b, relief opening; 2, rotor; 3, return terms such as cold air mouth, but do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (4)
1, a kind of low noise air cooling Roots pump, comprise a pump housing (1) with suction port (1a) and relief opening (1b), driving gear, driven gear, driving shaft, driven shaft, power rotor (2), driven rotor (4) and motor, described driving gear is meshed with driven gear, one end of driving shaft is arranged with driving gear, the other end of driving shaft and above-mentioned motor link, above-mentioned power rotor (2) is arranged on the middle part of driving shaft, described driven shaft one end is arranged with driven gear, above-mentioned driven rotor (4) is arranged on the middle part of driven shaft, it is characterized in that, the side of the described pump housing (1) also is provided with returns cold air mouth (3), and above-mentioned power rotor (2) and driven rotor (4) are a pair of three leaf meander configuration conjugation rotors.
2, low noise air cooling Roots pump according to claim 1 is characterized in that, the described cold air mouth (3) that returns is two, and the both sides that are positioned at the pump housing (1) of symmetry.
3, low noise air cooling Roots pump according to claim 1 and 2 is characterized in that, links by coupling between described motor and the driving shaft.
4, low noise air cooling Roots pump according to claim 1 and 2 is characterized in that, the described pump housing (1) two ends also are provided with side cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920116334U CN201377428Y (en) | 2009-03-25 | 2009-03-25 | Low-noise air-cooled roots vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920116334U CN201377428Y (en) | 2009-03-25 | 2009-03-25 | Low-noise air-cooled roots vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201377428Y true CN201377428Y (en) | 2010-01-06 |
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ID=41517536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920116334U Expired - Lifetime CN201377428Y (en) | 2009-03-25 | 2009-03-25 | Low-noise air-cooled roots vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201377428Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062046A (en) * | 2013-01-07 | 2013-04-24 | 艾迪机器(杭州)有限公司 | Twisted-type rotor pump |
| CN113090531A (en) * | 2021-04-27 | 2021-07-09 | 山东三牛机械集团股份有限公司 | Self-cooling Roots vacuum pump and self-cooling method thereof |
-
2009
- 2009-03-25 CN CN200920116334U patent/CN201377428Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062046A (en) * | 2013-01-07 | 2013-04-24 | 艾迪机器(杭州)有限公司 | Twisted-type rotor pump |
| CN103062046B (en) * | 2013-01-07 | 2016-01-20 | 艾迪机器(杭州)有限公司 | Twisted-type rotor pump |
| CN113090531A (en) * | 2021-04-27 | 2021-07-09 | 山东三牛机械集团股份有限公司 | Self-cooling Roots vacuum pump and self-cooling method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: MADEBAO VACUUM EQUIPMENT GROUP CO., LTD. Assignor: Taizhou Vocational & Technical College Contract record no.: 2015330000031 Denomination of utility model: Low-noise air-cooled roots vacuum pump Granted publication date: 20100106 License type: Exclusive License Record date: 20150304 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100106 |
|
| CX01 | Expiry of patent term |