CN201836050U - Roots blower with pressure-balancing counter-current holes - Google Patents
Roots blower with pressure-balancing counter-current holes Download PDFInfo
- Publication number
- CN201836050U CN201836050U CN2010205849110U CN201020584911U CN201836050U CN 201836050 U CN201836050 U CN 201836050U CN 2010205849110 U CN2010205849110 U CN 2010205849110U CN 201020584911 U CN201020584911 U CN 201020584911U CN 201836050 U CN201836050 U CN 201836050U
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- casing
- reverse flow
- flow hole
- roots blower
- pressure
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- Expired - Fee Related
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- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model provides a Roots blower with pressure-balancing counter-current holes. The Roots blower comprises a housing; a blower rotor is mounted in the housing; an air inlet and an air outlet are respectively formed at the upper end and the lower end of the housing; an exhaust pipe is connected with the bottom of the housing, and is correspondingly communicated with the air outlet; and a plurality of pressure-balancing counter-current holes are respectively formed at the bottom of the housing, and communicated with the exhaust pipe correspondingly. The Roots blower can solve the problem in the prior art that as the pressure difference between the housing and the exhaust pipe is larger, the working noise of the blower is higher.
Description
Technical field
The utility model relates to the industrial fan technical field, specifically a kind of roots blower of all pressing reverse flow hole that is provided with.
Background technique
At present, the roots blower of extensive use in industrial and mining enterprise, its working procedure is by fan rotor air to be sucked in the casing from intake grill to enter exhaust duct from exhaust outlet after the compression, is transferred out for relevant by exhaust duct and uses with wind devices.The tradition roots blower at work, owing to be in negative pressure state in the casing of blower fan, the pressure of this negative pressure is much higher than the pressure in the exhaust duct, cause in the casing and between in the exhaust duct and formed bigger pressure reduction, consequent air pulsing phenomenon has caused the operating noise of blower fan bigger, has brought many worries to every aspect.
The model utility content
The purpose of this utility model provides a kind of roots blower of all pressing reverse flow hole that is provided with, and casing and the pressure reduction between the exhaust duct that it can solve the prior art existence cause the bigger problem of blower fan operating noise greatly.
The purpose of this utility model is achieved through the following technical solutions: be provided with the roots blower of all pressing reverse flow hole, it comprises installs fan rotor in casing, the casing, the casing upper and lower end is offered intake grill and exhaust outlet respectively, bottom of shell connects exhaust duct, exhaust duct is corresponding with exhaust outlet to communicate, offer several on the bottom of shell respectively and all press reverse flow hole, several are all pressed, and reverse flow hole is corresponding with exhaust duct respectively to communicate.
For further realizing the purpose of this utility model, also can finish by the following technical programs: several all press reverse flow hole to be separately positioned on the left and right sides of exhaust outlet.
The beneficial effect that the utility model can produce: all press reverse flow hole because of on bottom of shell, offering several respectively, several are all pressed, and reverse flow hole is corresponding with exhaust duct respectively to communicate, so, it can make in the casing and the pressure reduction between in the exhaust duct obtains certain equilibrium, with this, effectively slow down the generation of air pulsing phenomenon, greatly reduced the operating noise of blower fan;
All press reverse flow hole because of several and be separately positioned on the left and right sides of exhaust outlet, when blower fan is worked, the pressurized air that forms in the casing is after entering exhaust duct from exhaust outlet, discharge by exhaust duct again, at this moment, pressure reduction between exhaust outlet top and the bottom is quite big, produced the air pulsing phenomenon thus, make the operating noise of blower fan bigger, so, after on the position, the left and right sides of exhaust outlet several being set respectively and all pressing reverse flow hole, enter the pressurized air of exhaust duct from exhaust outlet, all press reverse flow hole by several that are provided with on the position, the exhaust outlet left and right sides, can smooth and easy distribution adverse current arrive a part in the casing, with this, make the pressure reduction between exhaust outlet top and the bottom obtain further equilibrium, it has further slowed down the generation of air pulsing phenomenon, further reduced the operating noise of blower fan.
The blower fan industry that is widely used in of the present utility model can produce tangible society, economic benefit.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 be the A of Fig. 1 to view, mainly illustrate several all to press reverse flow hole 5 to be separately positioned on the structural type of exhaust outlet 3 left and right sides.
Embodiment
The roots blower of all pressing reverse flow hole that is provided with of the present utility model, it comprises in casing 1, the casing 1 installs fan rotor, casing 1 upper and lower end is offered intake grill 2 and exhaust outlet 3 respectively, casing 1 bottom connects exhaust duct 4, exhaust duct 4 and exhaust outlet 3 corresponding communicating, offer several respectively on casing 1 bottom and all press reverse flow hole 5, several all press reverse flow hole 5 respectively with exhaust duct 4 corresponding communicating.Several all press reverse flow hole 5 to be separately positioned on the left and right sides of exhaust outlet 3.
During making, process various component assemblings by above-mentioned requirements and get final product.
During installation, intake grill 2 of the present utility model and air intake pipe are connected, exhaust duct 4 is connected with wind devices with relevant, and motor is dragged the utility model get final product.
During work, fan rotor rotation under the dragging of motor, the pressurized air that forms in the casing 1 is to enter exhaust duct 4 to the relevant wind devices air feed of using from exhaust outlet 3, meanwhile, enter the pressurized air of exhaust duct 4 from exhaust outlet 3, all press reverse flow hole 5 by several that are provided with on the position, exhaust outlet 3 left and right sides, can smooth and easy distribution adverse current arrive a part in the casing 1, with this, fundamentally reduced the pressure reduction between exhaust outlet 3 tops and the bottom, slow down the generation of air pulsing phenomenon, solved the big defective of roots blower operating noise.
Fan rotor of the present utility model is a known technology.
Technological scheme described in the utility model is not limited only to the mode of execution of present embodiment record, can also have other mode of execution to finish the technical solution of the utility model.
The technology that the utility model is not described in detail, shape, structure partly are known technology.
Claims (2)
1. be provided with the roots blower of all pressing reverse flow hole, it comprises installs fan rotor in casing (1), the casing (1), casing (1) upper and lower end is offered intake grill (2) and exhaust outlet (3) respectively, casing (1) bottom connects exhaust duct (4), exhaust duct (4) and corresponding the communicating of exhaust outlet (3), it is characterized in that: offer several respectively on casing (1) bottom and all press reverse flow hole (5), several all press reverse flow hole (5) respectively with corresponding the communicating of exhaust duct (4).
2. the roots blower of all pressing reverse flow hole that is provided with according to claim 1 is characterized in that: several all press reverse flow hole (5) to be separately positioned on the left and right sides of exhaust outlet (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205849110U CN201836050U (en) | 2010-11-01 | 2010-11-01 | Roots blower with pressure-balancing counter-current holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205849110U CN201836050U (en) | 2010-11-01 | 2010-11-01 | Roots blower with pressure-balancing counter-current holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201836050U true CN201836050U (en) | 2011-05-18 |
Family
ID=44006155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205849110U Expired - Fee Related CN201836050U (en) | 2010-11-01 | 2010-11-01 | Roots blower with pressure-balancing counter-current holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201836050U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527491A (en) * | 2013-10-18 | 2014-01-22 | 刘保龙 | Low-noise double-blade roots blower |
| CN104632618A (en) * | 2013-11-08 | 2015-05-20 | 沃尔沃汽车公司 | Roots-style blower with leakage mechanisms |
-
2010
- 2010-11-01 CN CN2010205849110U patent/CN201836050U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527491A (en) * | 2013-10-18 | 2014-01-22 | 刘保龙 | Low-noise double-blade roots blower |
| CN104632618A (en) * | 2013-11-08 | 2015-05-20 | 沃尔沃汽车公司 | Roots-style blower with leakage mechanisms |
| CN104632618B (en) * | 2013-11-08 | 2018-05-29 | 沃尔沃汽车公司 | Roots-type wind turbine with leakage mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20131101 |