CN202040122U - Small-vibration low-noise centrifugal pump volute - Google Patents
Small-vibration low-noise centrifugal pump volute Download PDFInfo
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- CN202040122U CN202040122U CN2011200028437U CN201120002843U CN202040122U CN 202040122 U CN202040122 U CN 202040122U CN 2011200028437 U CN2011200028437 U CN 2011200028437U CN 201120002843 U CN201120002843 U CN 201120002843U CN 202040122 U CN202040122 U CN 202040122U
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- centrifugal pump
- guide vane
- noise
- housing
- vibration
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Abstract
Provided is a small-vibration low-noise centrifugal pump volute, which involves the centrifugal pump technological field. The small-vibration low-noise centrifugal pump volute comprises a volute body (1) and a guide vane (2). The guide vane (2), which is three-dimensional and is distorted, is processed and formed in an impacting manner, and is welded and fixed on an expansion section of the volute body (1). By the addition of the guide vane, the flow condition in the expansion section of the centrifugal pump volute is improved, thereby reducing vibration noise caused by centrifugal pumps. With a simple structure, the small-vibration low-noise centrifugal pump volute of the utility model achieves the significant effects of reducing vibration and noise, and has no influence on the running efficiency of centrifugal pumps.
Description
Technical field
The invention belongs to the centrifugal pump technical field, the low noise centrifugal pump spiral casing of particularly a kind of low vibration.
Background technique
Centrifugal pump is a kind of universal machine, is widely used in each department of national economy, plays a part very important.The vibration and the noise that produce during centrifugal pump operation nowadays not only worsen working condition, influence performance, the shortening service life of equipment and system, and influence people's the healthy and state of mind, therefore become the problem of social concerns day by day.Vibration noise and flow-induction vibration noise that the vibration noise of centrifugal pump has machinery to cause, the vibration noise that machinery causes mainly contains Machine Design and causes, the noise of this respect by shake as vibration isolation, absorbing, resistance, method such as sound absorption is well solved.And it is also less to the research of induced vibration and the noise control of flowing.
By retrieval, patent application related to the present invention has: noise-reducing volute with stepped spiral tougue (publication number: CN 1270281A), invented a kind of step tongue formula spiral case that is used for centrifugal blower, characteristics are simple in structure, has certain noise reduction, but this spiral case cut water is far away apart from impeller outlet, and internal flow loss and radial force are bigger, and operational efficiency is lower.
(publication number: CN 101092974A), the spiral case cut water is extended in this invention to spiral case of centrifugal type fluids machinery, avoids the unexpected variation of spiral case runner, play the effect of vibration and noise reducing, but this worm frame complexity, manufacturing difficulty, longer in addition cut water can increase flow losses, reduces operational efficiency.
Summary of the invention
Technical problem to be solved by this invention is to reduce vibration and the noise that the centrifugal pump internal flow is induced, a kind of low vibration low-noise centrifugal pump spiral case is proposed, this centrifugal pump spiral casing effect of vibration and noise reduction is remarkable, simple in structure, and does not influence the operational efficiency of centrifugal pump.
Technological scheme of the present invention is: a kind of low vibration low-noise centrifugal pump spiral case comprises parts such as housing and guide vane.Guide vane is fixed on the inboard of housing diffuser by the mode of welding.Guide vane is three-dimensional twisted pattern, number of blade Z
1Be 2～3, evenly arrange along the diffuser wall.The length of guide vane longshore current line direction is 2/3 of housing diffuser part longshore current line direction length, and guide vane outlet limit is concordant with the housing outlet edge.The height of guide vane is 0.2～0.3 times of housing outlet diameter, and thickness is 1～4mm, adopts the mode of impacting moulding to process.
Housing is the critical piece of centrifugal pump, is used to collect the liquid of impeller outlet, and the kinetic energy of liquid is changed into pressure energy.Extremely unstable by discovering in the internal flow of housing diffuser, can produce whirlpool, secondary flow, cause the pressure pulsation that the housing outlet port is strong, and this pressure pulsation produces the one of the main reasons of vibration noise when being exactly the centrifugal pump operation.
In order to alleviate the strong pressure pulsation of housing outlet, at the inner guide vane that increases of housing diffuser, guide vane is three-dimensional twisted pattern, and this is in order to improve its hydraulic performance.The number of blade is 2～3, evenly arranges along the diffuser wall, squeeze like this and lose all very little, to the almost not influence of the operational efficiency of pump.The length of guide vane longshore current line direction is 2/3 of housing diffuser longshore current line direction length, and guide vane outlet limit is concordant with the housing outlet edge.The height of guide vane is got 0.2～0.3 times of housing outlet diameter, can guarantee the performance of passing through of liquid like this.Guide vane import laying angle is meant guide vane inlet side and the formed angle of shell wall side Normal direction, and its influence to flowing state is bigger, and mainly by the flowing velocity decision, general import laying angle is got 25～30 °.Guide vane outlet laying angle instructs exit edge of blade and the formed angle of shell wall side Normal direction, for do not influence liquid housing export flow direction, generally export laying angle and get 0 °.
Guide vane adopts stamping forming mode to process, and thickness is 1～4mm, adopts the mode of spot welding to connect with the housing diffuser.
The invention has the beneficial effects as follows: alleviate the strong pressure pulsation of housing outlet, effectively reduce by the unstable vibration noise that flows and cause of enclosure interior; The present invention is simple in structure and do not influence the operational efficiency of centrifugal pump in addition.
Description of drawings
Fig. 1 is an embodiment's of an a kind of low vibration low-noise centrifugal pump spiral case of the present invention structural profile schematic representation.
Fig. 2 is the guide vane structural representation.
Among the figure: 1. housing, 2. guide vane.
Embodiment
In conjunction with Fig. 1, low vibration low-noise centrifugal pump spiral case of the present invention comprises parts such as housing 1, guide vane 2, guide vane 2 is fixed by welding on the housing 1, is used for improving the flowing state in the housing diffuser, reaches to alleviate the unstable induced vibration anti noise that flows.
In conjunction with Fig. 2, embodiment's guide vane 2 is three-dimensional twisted pattern, and the number of blade is 2, and thickness is 3mm, processes by the mode of impacting moulding.Guide vane import laying angle is 28 °, and the outlet laying angle is 0 °.
Working procedure is as follows:
Housing 1 is a kind of pumping chamber that is used for collecting centrifugal pump impeller outlet liquid; the kinetic energy of liquid is converted into pressure energy; housing is fixed; sound interference effect between the rotation of centrifugal pump impeller and the housing 1; make the flow of fluid that flows into the housing diffuser very unstable; usually can form a bigger whirlpool, this instability flows and has just brought out the violent pressure pulsation of centrifugal pump outlet, produces bigger vibration and noise.Increase guide vane 2, can effectively improve the flowing state in the housing diffuser, alleviate or avoid the violent pressure pulsation in housing outlet port, reach the purpose of vibration and noise reducing.
Claims (4)
1. one kind low vibration low-noise centrifugal pump spiral case comprises housing (1) and guide vane (2), and it is characterized in that: guide vane (2) is fixed on the inboard of housing (1) diffuser by the mode of welding.
2. a kind of low vibration low-noise centrifugal pump spiral case according to claim 1, it is characterized in that: guide vane (2) is three-dimensional twisted pattern, number of blade Z1 is 2～3.
3. a kind of low vibration low-noise centrifugal pump spiral case according to claim 1, it is characterized in that: the length of guide vane (2) longshore current line direction is 2/3 of housing (1) diffuser part longshore current line direction length, and guide vane (2) outlet limit is concordant with housing (1) outlet edge.
4. a kind of low vibration low-noise centrifugal pump spiral case according to claim 1, it is characterized in that: the height of guide vane (2) is 0.2～0.3 times of housing (1) outlet diameter, and thickness is 1～4mm, adopts the mode of impacting moulding to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200028437U CN202040122U (en) | 2011-01-07 | 2011-01-07 | Small-vibration low-noise centrifugal pump volute |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200028437U CN202040122U (en) | 2011-01-07 | 2011-01-07 | Small-vibration low-noise centrifugal pump volute |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202040122U true CN202040122U (en) | 2011-11-16 |
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ID=44967568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200028437U Expired - Fee Related CN202040122U (en) | 2011-01-07 | 2011-01-07 | Small-vibration low-noise centrifugal pump volute |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202040122U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878116A (en) * | 2012-10-31 | 2013-01-16 | 北京皓德创业科技有限公司 | Energy saving water pump applied in central air conditioning system |
| CN103452908A (en) * | 2013-09-02 | 2013-12-18 | 奇瑞汽车股份有限公司 | Centrifugal water pump for automobile |
-
2011
- 2011-01-07 CN CN2011200028437U patent/CN202040122U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878116A (en) * | 2012-10-31 | 2013-01-16 | 北京皓德创业科技有限公司 | Energy saving water pump applied in central air conditioning system |
| CN103452908A (en) * | 2013-09-02 | 2013-12-18 | 奇瑞汽车股份有限公司 | Centrifugal water pump for automobile |
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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: Yinglang Tech Co., Ltd., Jiangsu Assignor: Jiangsu University Contract record no.: 2012320000365 Denomination of utility model: Spiral casing of low-vibration and low-noise centrifugal pump Granted publication date: 20111116 License type: Exclusive License Record date: 20120401 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20160107 |