CN202914315U - Double-stage roots vacuum pump - Google Patents
Double-stage roots vacuum pump Download PDFInfo
- Publication number
- CN202914315U CN202914315U CN 201220550506 CN201220550506U CN202914315U CN 202914315 U CN202914315 U CN 202914315U CN 201220550506 CN201220550506 CN 201220550506 CN 201220550506 U CN201220550506 U CN 201220550506U CN 202914315 U CN202914315 U CN 202914315U
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- stage
- roots pump
- noise reduction
- twin
- roots
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Abstract
The utility model discloses a double-stage roots vacuum pump which comprises a body provided with both an air inlet and an air outlet, wherein a silencer device or a silence voltage stabilizer is installed on the air outlet; the body comprises a first-stage rotor and a second-stage rotor which are serially connected and installed inside a pump shell and provided with roots impellers; a middle baffle is arranged between the first-stage rotor and the second-stage rotor; an independent first-stage roots vacuum pump unit is formed by the first-stage rotor and the pump shell; a second-stage roots vacuum pump unit is formed by the second-stage rotor and the pump shell; the middle baffle is provided with an air channel which is used for communicating an air discharge part of the first-stage roots vacuum pump unit with an air inlet part of the second-stage roots vacuum pump unit; and the air inlet is correspondingly positioned in the first-stage roots vacuum pump unit and the air outlet is correspondingly positioned in the second-stage roots vacuum pump unit. The double-stage roots vacuum pump can meet the requirements on vacuum degree that a single-stage roots vacuum pump cannot achieve, can discharge the atmosphere directly, can save the energy, reduces the noise and is stable in vacuum degree.
Description
Technical field
The utility model belongs to field of vacuum, is specifically related to a kind of twin-stage Roots pump.
Background technique
Industrial field such as paper industry need the coarse vacuum equipment of many large rates of air sucked in required, at present main water ring vaccum pump and the Roots pump of adopting.The water ring vaccum pump energy consumption is higher, and work the time need to replenish a large amount of clear water, waste water resource.And existing Roots pump is mainly single-stage pump, the two-stage pump that only has minute quantity simply to be in series by two platform independent single-stage pumps.The ultimate vacuum of single-stage Roots pump is not high enough, and efficiency is lower, and noise is large.Complicated by the twin-stage Roots pump configuration that two platform independent single-stage pumps are in series, loss is large, and floor space is many.Therefore, development structure is advanced, efficient low-consume, and economical and practical coarse vacuum equipment is the key subjects of energy-saving and emission-reduction.
The model utility content
Technical problem to be solved in the utility model just provides a kind of efficient, energy-conservation twin-stage Roots pump, and it can satisfy the condition of high vacuum degree requirement that is beyond one's reach of single-stage Roots pump, but discharging directly into atmosphere, and the saving energy, noise is low, vacustat.
For solving the problems of the technologies described above, the utility model adopts following technological scheme, and a kind of twin-stage Roots pump comprises the body that is provided with suction port and relief opening, it is characterized in that: silencer or noise reduction stable-pressure device are installed on the described relief opening.
Preferably, described body comprises primary rotor and the secondary rotor with Roots's impeller that is installed in series in pump case, between primary rotor and the secondary rotor intermediate clapboard is set, primary rotor and pump case consist of independently first order Roots pump unit, secondary rotor and pump case consist of independently second level Roots pump unit, be furnished with air passageways on the described intermediate clapboard and be used for being communicated with the exhaust portion of first order Roots pump unit and the air input part of Roots pump unit, the second level, corresponding described suction port is positioned on the first order Roots pump unit, and described relief opening is positioned on the Roots pump unit, the second level.
Preferably, described noise reduction stable-pressure device comprises noise reduction voltage stabilizing casing, and noise reduction voltage stabilizing casing internal placement has noise reduction, voltage stabilizing element.
Preferably, described noise reduction pressure stabilizer casing is rectangle.
Preferably, described pump case is upper and lower split-type structural.
Preferably, described pump case is made of first order Roots pump unit housings and second level Roots pump unit housings.
Preferably, on every grade of rotor a pair of intermeshing is housed all in the pump case, and Roots's impeller of counterrotating.
Preferably, described Roots's impeller is tri-lobed.
Improved, be provided with sealing water intake pipe before the described suction port, make vacuum pump be in the wet type running state.
The utility model has in the end been installed the noise reduction pressure stabilizer on the relief opening of one-level vacuum pump, in the noise reduction pressure stabilizer, arrange noise reduction, voltage stabilizing element, so that the air that vacuum pump is discharged obtains the most fast noise reduction, simultaneously can reduce pressure surge, thereby can further reduce noise, and stable degree of vacuum, can satisfy the condition of high vacuum degree requirement that is beyond one's reach of single-stage Roots pump, but discharging directly into atmosphere, more energy-conserving and environment-protective.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further described:
Fig. 1 is the embodiment of the utility model twin-stage Roots pump;
Fig. 2 is the primary rotor of series connection and the structural representation of secondary rotor;
Fig. 3 is A among Fig. 1-A sectional view;
Fig. 4 is B among Fig. 1-B sectional view;
Fig. 5 is the noise reduction of Integrated design, a kind of enforcement structure of voltage stabilizing element;
Fig. 6 is that the noise reduction of Integrated design, the another kind of voltage stabilizing element are implemented structure.
Embodiment
For the core design of the utility model twin-stage Roots pump is at the relief opening of twin-stage Roots pump silencer or noise reduction stable-pressure device to be installed.Satisfy the condition of high vacuum degree requirement, but discharging directly into atmosphere, and the saving energy, noise is low, vacustat.
As shown in Figures 1 to 4, Roots pump comprises body in the present embodiment, described body comprises primary rotor 21 and the secondary rotor 22 that is installed in series in pump case 1, every grade of rotor comprises two rotating shafts and a pair of also impeller of counterrotating that intermeshes, described impeller is tri-lobed and is the circumference symmetry shape, impeller width on the primary rotor 21 is greater than the impeller width on the secondary rotor 22, and the profile molded line of triplicate blade impeller can be made of straight line, circular arc, involute, cycloid etc.Between primary rotor 21 and the secondary rotor 22 intermediate clapboard 3 is set, primary rotor 21 consists of independently first order Roots pump unit with pump case 1, secondary rotor 22 consists of independently second level Roots pump unit with pump case 1, the pump case of every one-level Roots pump unit adopts upper and lower split-type structural, and described housing can be by some piece housing cell formations of the every one-level Roots pump of correspondence unit simultaneously.5 are supporting and transmission device among the figure.Be furnished with air passageways on the described intermediate clapboard 3 and be used for being communicated with the exhaust portion of one-level Roots pump unit and the air input part of secondary Roots pump unit, be provided with suction port 11 in first order Roots pump unit, be provided with relief opening 12 in secondary Roots pump unit, at relief opening 12 noise reduction stable-pressure device 4 is installed, described noise reduction stable-pressure device comprises the noise reduction voltage stabilizing casing 41 that is rectangle, noise reduction voltage stabilizing casing 41 internal placement have the independent noise reduction voltage stabilizing element 42 that arranges, the perhaps noise reduction of general all kinds of Integrated designs in the existing all kinds of pumps, voltage stabilizing element, be the noise reduction of Integrated design such as Fig. 5, a kind of enforcement structure of voltage stabilizing element, it comprises the baffles 44 that an inclination noise reduction pressure stabilizer housing is imported and exported, Fig. 6 is the noise reduction of Integrated design, the another kind of voltage stabilizing element is implemented structure, it comprises that an opening is towards the box body 45 of relief opening, noise reduction, voltage stabilizing element vibrates to fall high low noise by absorbing sound wave and air-flow, utilizes the mixed function of cutting apart of air-flow to come steady pressure.
In above-described embodiment, can also before described suction port, be provided with sealing water intake pipe, make vacuum pump be in the wet type running state.
The operation principles of above-described embodiment and good effect:
Primary rotor and the secondary rotor of series connection are housed in the pump case, thereby form the series connection of two-stage vacuum pump.During vacuum pump work, volume expansion along with suction side, primary rotor place, the air that is sucked the first suction port from the pump case is drawn between primary rotor and the pump case, work as wheel rotation, these gases are constantly compressed again and are isolated with suction port, when impeller is rotated further, the volume that the primary rotor place discharges side shrinks, these gases are forced to discharge again, be drained into air passageways between primary rotor and the secondary rotor from the pump case of primary rotor and side plate, finish the whole working procedure of first order vacuum pump.The working procedure of the second level vacuum pump that is comprised of secondary rotor and pump case is identical with first order vacuum pump, the air that is sucked is drawn between secondary rotor and the pump case from primary rotor and the middle air passageways of secondary rotor first, then the relief opening from the secondary rotor pump case is discharged to the noise reduction pressure stabilizer, after noise reduction and voltage stabilizing, discharge from the vacuum pump exhaust port of noise reduction pressure stabilizer at last.
The twin-stage Roots pump that is formed by the two-stage vacuum series connection of pumps, can not only improve operation degree of vacuum, realize discharging directly into atmosphere, and owing to the negative pressure of vacuum generation is shared jointly by two stage pump, so the load of every grade of pump is lighter, therefore can reduce equipment failure, and reduction noise, in addition, because air has compressibility, and the rate of air sucked in required of first order vacuum pump is greater than second level vacuum pump in the twin-stage Roots vacuum, so under equal conditions, the energy consumption of twin-stage Roots pump can be lower than single-stage Roots pump.
The above only is specific embodiment of the utility model, but technical characteristics of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the variation of doing or modification all are encompassed among the claim of the present utility model.
Claims (9)
1. twin-stage Roots pump, comprise the body that is provided with suction port and relief opening, silencer or noise reduction stable-pressure device are installed on the described relief opening, it is characterized in that: described body comprises primary rotor and the secondary rotor with Roots's impeller that is installed in series in pump case, between primary rotor and the secondary rotor intermediate clapboard is set, primary rotor and pump case consist of independently first order Roots pump unit, secondary rotor and pump case consist of independently second level Roots pump unit, be furnished with air passageways on the described intermediate clapboard and be used for being communicated with the exhaust portion of first order Roots pump unit and the air input part of Roots pump unit, the second level, corresponding described suction port is positioned on the first order Roots pump unit, and described relief opening is positioned on the Roots pump unit, the second level.
2. twin-stage Roots pump according to claim 1, it is characterized in that: described noise reduction stable-pressure device comprises noise reduction voltage stabilizing casing, noise reduction voltage stabilizing casing internal placement has noise reduction, voltage stabilizing element.
3. twin-stage Roots pump according to claim 2, it is characterized in that: described noise reduction pressure stabilizer casing is rectangle.
4. twin-stage Roots pump according to claim 1, it is characterized in that: described pump case is upper and lower split-type structural.
5. twin-stage Roots pump according to claim 4, it is characterized in that: described pump case is made of first order Roots pump unit housings and second level Roots pump unit housings.
6. twin-stage Roots pump according to claim 1 is characterized in that: on every grade of rotor a pair of intermeshing is housed all in the pump case, and Roots's impeller of counterrotating.
7. described twin-stage Roots pump according to claim 1, it is characterized in that: described Roots's impeller is tri-lobed.
8. the described twin-stage Roots pump of any one in 7 according to claim 1 is characterized in that: be provided with sealing water intake pipe before the described suction port, make vacuum pump be in the wet type running state.
9. twin-stage Roots pump according to claim 2 is characterized in that: described noise reduction, voltage stabilizing element are the baffles that an inclination noise reduction pressure stabilizer housing is imported and exported; Perhaps described noise reduction, voltage stabilizing element are that an opening is towards the box body of relief opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220550506 CN202914315U (en) | 2012-10-25 | 2012-10-25 | Double-stage roots vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220550506 CN202914315U (en) | 2012-10-25 | 2012-10-25 | Double-stage roots vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914315U true CN202914315U (en) | 2013-05-01 |
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ID=48162634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220550506 Expired - Fee Related CN202914315U (en) | 2012-10-25 | 2012-10-25 | Double-stage roots vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914315U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298869A (en) * | 2014-05-29 | 2016-02-03 | 湘潭泵业集团有限公司 | Novel vacuum pump and novel multi-stage vacuum pump |
-
2012
- 2012-10-25 CN CN 201220550506 patent/CN202914315U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298869A (en) * | 2014-05-29 | 2016-02-03 | 湘潭泵业集团有限公司 | Novel vacuum pump and novel multi-stage vacuum pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20201025 |