CN107477031A - A kind of anti-cavitation hydraulic chamber suitable for centrifugal pump - Google Patents
A kind of anti-cavitation hydraulic chamber suitable for centrifugal pump Download PDFInfo
- Publication number
- CN107477031A CN107477031A CN201710854283.XA CN201710854283A CN107477031A CN 107477031 A CN107477031 A CN 107477031A CN 201710854283 A CN201710854283 A CN 201710854283A CN 107477031 A CN107477031 A CN 107477031A
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- China
- Prior art keywords
- spiral case
- hydraulic chamber
- cavitation
- centrifugal pump
- sewage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of anti-cavitation hydraulic chamber suitable for centrifugal pump, including the first spiral case, the second spiral case；Common sewage pump hydraulic chamber only has a spiral case, when hydraulic pressure is unstable, easily cause cavitation phenomenons, because the concentration of sewage is usually also unstable, sometimes many impurity are also contained, the generation of cavitation phenomenons can more be caused, and a kind of anti-cavitation hydraulic chamber suitable for centrifugal pump uses double volute, the bottom plate of second spiral case sets water inlet to be used to suck sewage, when pressure is constant equivalent to common sewage pump hydraulic chamber, and during hydraulic pressure rising, sewage can be pressed into the first spiral case by huge pressure, so as to reduce hydraulic pressure, sewage is discharged from the first spiral case upper water-out mouth again by the under shed of the first spiral case, so as to reduce the generation of cavitation phenomenons, protection equipment, reduce loss, increase service life.
Description
Technical field
The present invention relates to sewage pump, and in particular to a kind of anti-cavitation hydraulic chamber suitable for centrifugal pump.
Background technology
Sewage pump makes the indispensable equipment of people's daily life, may not be very common, but but play behind the scenes
Very important role, important component of the sewage pump as processing sewage；Sewage pump belongs to one kind of centrifugal impurities pump, tool
There are diversified forms：Such as two kinds of submersible type and dry type, submersible type the most frequently used at present is QW type submerged sewage pumps, most common dry type
Sewage pump two kinds of such as horizontal sewage pump of W types and WL types vertical sump pump.Mainly for delivery of municipal sewage, contain in excrement or liquid
There is fiber.The medium of the solid particles such as paper scrap, the temperature for being typically transported medium are not more than 80 DEG C.Due in the medium that is conveyed
Fibre object containing easy winding or pack.Therefore this kind of pump runner is easy to block, pump can make pump cisco unity malfunction once being blocked,
Motor even is burnt, so as to cause blowdown not smooth.Serious influence is brought to urban life and environmental protection.Therefore, anti-blocking and can
An important factor for by property being sewage pump quality.
Hydraulic chamber is located at the core position of sewage pump, is cooperated with impeller and completes water suction and draining, but in pump machine work
Many problems, such as cavitation are often run into when making；Pump occurs cavitation and showed when suction vacuum is more than permissible suction head
As.When drop of pressure is to by liquor charging body saturated vapor pressure at the working temperature at impeller eye, part will occur for liquid
Vaporization, the bubble of generation will enter higher-pressure region with liquid from low-pressure area, and in higher-pressure region, bubble can drastically shrink, condensation, around it
Liquid Primordial Qi bubble rushed at high speed taken up space, produce the shock wave of high intensity, impact impeller and pump case, make an uproar
Sound causes vibrations.Because the chemical attack for a long time by trace dissolved oxygen in impulsive force repeated action and liquid acts on, impeller
There is spot and crackle even into spongy damage in local surfaces.
The content of the invention
It is to be solved by this invention be in the prior art sewage pump serious cavitation erosion the problem of, there is provided one kind be applied to centrifugal pump
Anti-cavitation hydraulic chamber, shunting increase space so as to reducing cavitation phenomenons by way of reducing pressure.
The present invention is achieved through the following technical solutions：
A kind of anti-cavitation hydraulic chamber suitable for centrifugal pump, including the first spiral case, the second spiral case, the first spiral case are located at second
The surface of spiral case, first spiral case are provided with three openings, are respectively：Upper water-out mouth, upper shed, under shed, it is described on open
Mouth is arranged above connecting portion, and the upper shed is identical with the under shed size；Second spiral case is provided with bottom plate,
The bottom plate middle is provided with water inlet, and second spiral case is additionally provided with lower outlet and connector, second spiral case
Connector is as the shape of the under shed of first spiral case and connects.Common sewage pump hydraulic chamber only has a spiral case,
When hydraulic pressure is unstable, it is easy to cavitation phenomenons is caused, because the concentration of sewage is usually also unstable, sometimes also containing many miscellaneous
Matter, the generation of cavitation phenomenons can be more caused, and a kind of anti-cavitation hydraulic chamber suitable for centrifugal pump uses double volute, the second snail
The bottom plate of shell sets water inlet to be used to suck sewage, when pressure is constant equivalent to common sewage pump hydraulic chamber, and on hydraulic pressure
When rising, sewage can be pressed into the first spiral case by huge pressure, so as to reduce hydraulic pressure, sewage by the under shed of the first spiral case again
Discharged from the first spiral case upper water-out mouth, so as to reduce the generation of cavitation phenomenons, protection equipment, reduce loss, increase service life.
Further, above-mentioned a kind of anti-cavitation hydraulic chamber suitable for centrifugal pump, the upper water-out mouth of first spiral case, on
Opening, the shape of under shed are circle.The lower outlet of second spiral case, connector, the shape of water inlet are circle.
Further, the connecting portion is shaped as circular tube shaped, and the outer wall of the connecting portion is provided with some connectors, the company
Fitting is evenly distributed on the outer wall of connecting portion.
Preferably, the connector is provided with screw.
Preferably, the quantity of the connector is 3-5.
Preferably, above-mentioned a kind of anti-cavitation hydraulic chamber suitable for centrifugal pump, the material of the bottom plate is rubber.Rubber
Pliability it is good, can further increase the threshold value of applied hydraulic pressure.
The present invention compared with prior art, has the following advantages and advantages：
1st, the present invention reduces the generation of cavitation phenomenons, protection equipment；
2nd, the present invention substantially increases the service life of pump；
3rd, present invention dismounting easy to install, it is convenient to check.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the top view of the present invention.
The title of mark and corresponding part in accompanying drawing：
The spiral cases of 1- first, the spiral cases of 2- second, 3- bottom plates, 4- water inlets, 5- connectors, 11- upper water-out mouths, 12- connecting portions,
21- lower outlets.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
As shown in Figure 1, 2, a kind of anti-cavitation hydraulic chamber suitable for centrifugal pump, including the first spiral case 1, the second spiral case 2, institute
The cornerite for stating the first spiral case 1 and the second spiral case 2 is both preferably 240 ° to 270 °, and first spiral case 1 is provided with three openings, respectively
For：Upper water-out mouth 11, upper shed, under shed, the upper shed are arranged above connecting portion 12, and the upper shed with it is described
Under shed size is identical；Second spiral case 2 is provided with bottom plate 3, and the middle of bottom plate 3 is provided with water inlet 4, and described second
Spiral case 2 is additionally provided with lower outlet 21 and connector, the connector of second spiral case 2 and the under shed of first spiral case 1
Shape is the same and connects.First spiral case is located at the surface of the second spiral case, and sewage sucks from water inlet 4, by the second spiral case from
Lower outlet 21 is discharged, and when water is big, pressure is high or during pressure inequality, sewage can lead to first from the connector of the second spiral case 2
The under shed of spiral case 1, and by being discharged after the first spiral case 1 from upper water-out mouth 11, the connecting portion 12 of the first spiral case 1 is used for and the pump housing
Other parts connect.
A kind of above-mentioned anti-cavitation hydraulic chamber suitable for centrifugal pump, the upper water-out mouth 11 of first spiral case 1, on open
Mouth, the shape of under shed are circle.The lower outlet 21 of second spiral case 2, connector, the shape of water inlet 4 are circle
Shape.
A kind of above-mentioned anti-cavitation hydraulic chamber suitable for centrifugal pump, the connecting portion 12 are shaped as circular tube shaped, the company
The outer wall of socket part 12 is provided with some connectors 5, and the connector 5 is evenly distributed on the outer wall of connecting portion 12.In the present embodiment
The connector 5 is preferably provided with the connector of screw, and the preferred amount of the connector 5 is 3 to 5.
A kind of above-mentioned anti-cavitation hydraulic chamber suitable for centrifugal pump, the material of the bottom plate 3 is preferred in the present embodiment
For rubber.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (7)
- A kind of 1. anti-cavitation hydraulic chamber suitable for centrifugal pump, it is characterised in that including the first spiral case (1), the second spiral case (2), First spiral case (1) is located at the surface of the second spiral case (2), and first spiral case (1) is provided with three openings, is respectively：On Delivery port (11), upper shed, under shed, the upper shed are arranged above connecting portion (12), and the upper shed with it is described Under shed size is identical；Second spiral case (2) is provided with bottom plate (3), and bottom plate (3) middle is provided with water inlet (4), Second spiral case (2) is additionally provided with lower outlet (21) and connector, connector and first snail of second spiral case (2) The shape of the under shed of shell (1) is the same and connects.
- A kind of 2. anti-cavitation hydraulic chamber suitable for centrifugal pump according to claim 1, it is characterised in that：First snail The upper water-out mouth (11) of shell (1), upper shed, the shape of under shed are circle.
- A kind of 3. anti-cavitation hydraulic chamber suitable for centrifugal pump according to claim 1, it is characterised in that：Second snail The lower outlet (21) of shell (2), connector, the shape of water inlet (4) are circle.
- A kind of 4. anti-cavitation hydraulic chamber suitable for centrifugal pump according to claim 1, it is characterised in that：The connecting portion (12) circular tube shaped is shaped as, the outer wall of the connecting portion (12) is provided with some connectors (5), and the connector (5) is uniformly divided Outer wall of the cloth in connecting portion (12).
- A kind of 5. anti-cavitation hydraulic chamber suitable for centrifugal pump according to claim 4, it is characterised in that：The connector (5) it is provided with screw.
- A kind of 6. anti-cavitation hydraulic chamber suitable for centrifugal pump according to claim 4, it is characterised in that：The connector (5) quantity is 3-5.
- A kind of 7. anti-cavitation hydraulic chamber suitable for centrifugal pump according to claim 1, it is characterised in that：The bottom plate (3) material is rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710854283.XA CN107477031A (en) | 2017-09-20 | 2017-09-20 | A kind of anti-cavitation hydraulic chamber suitable for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710854283.XA CN107477031A (en) | 2017-09-20 | 2017-09-20 | A kind of anti-cavitation hydraulic chamber suitable for centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107477031A true CN107477031A (en) | 2017-12-15 |
Family
ID=60585987
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710854283.XA Pending CN107477031A (en) | 2017-09-20 | 2017-09-20 | A kind of anti-cavitation hydraulic chamber suitable for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107477031A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB707616A (en) * | 1951-01-24 | 1954-04-21 | Escher Wyss Ag | Improvements in and relating to centrifugal compressors and pumps |
| US3162128A (en) * | 1961-06-14 | 1964-12-22 | Regulator A G | Combined distribution valve and pump |
| CN2285839Y (en) * | 1996-03-20 | 1998-07-08 | 刘向东 | Dual-volute double-outlet connection pipe built-in electric submersible pump |
| JPH11257292A (en) * | 1998-03-11 | 1999-09-21 | Ishikawajima Harima Heavy Ind Co Ltd | Centrifugal pump and spiral chamber of compressor |
| CN101929359A (en) * | 2009-03-11 | 2010-12-29 | 通用汽车环球科技运作公司 | Turbine cylinder with asymmetric split-inlet |
| CN201934387U (en) * | 2010-12-13 | 2011-08-17 | 上海邦浦实业集团有限公司 | Pump shell structure of high-efficiency centrifugal pump |
| CN202280661U (en) * | 2011-09-28 | 2012-06-20 | 浙江浩星节能科技有限公司 | Pump with drainage shells |
| CN202707619U (en) * | 2012-06-18 | 2013-01-30 | 上海连成（集团）有限公司 | Improved self-priming pump pumping chamber |
| CN104963894A (en) * | 2015-06-04 | 2015-10-07 | 广东芬尼电器有限公司 | Volute type centrifugal fan with one let and two outlets |
| CN106140766A (en) * | 2015-04-23 | 2016-11-23 | 北京信智天成科技有限公司 | Circulating pump, hydro-peening system, cleaning machine and cleaning method |
| CN106704264A (en) * | 2017-01-12 | 2017-05-24 | 常州雷利电机科技有限公司 | Pump, water drainage circulation system with pump and household appliance |
| CN207229479U (en) * | 2017-09-20 | 2018-04-13 | 四川宇康供水设备有限公司 | Type anti scuffing hydraulic chamber of sewage pump intermediary |
-
2017
- 2017-09-20 CN CN201710854283.XA patent/CN107477031A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB707616A (en) * | 1951-01-24 | 1954-04-21 | Escher Wyss Ag | Improvements in and relating to centrifugal compressors and pumps |
| US3162128A (en) * | 1961-06-14 | 1964-12-22 | Regulator A G | Combined distribution valve and pump |
| CN2285839Y (en) * | 1996-03-20 | 1998-07-08 | 刘向东 | Dual-volute double-outlet connection pipe built-in electric submersible pump |
| JPH11257292A (en) * | 1998-03-11 | 1999-09-21 | Ishikawajima Harima Heavy Ind Co Ltd | Centrifugal pump and spiral chamber of compressor |
| CN101929359A (en) * | 2009-03-11 | 2010-12-29 | 通用汽车环球科技运作公司 | Turbine cylinder with asymmetric split-inlet |
| CN201934387U (en) * | 2010-12-13 | 2011-08-17 | 上海邦浦实业集团有限公司 | Pump shell structure of high-efficiency centrifugal pump |
| CN202280661U (en) * | 2011-09-28 | 2012-06-20 | 浙江浩星节能科技有限公司 | Pump with drainage shells |
| CN202707619U (en) * | 2012-06-18 | 2013-01-30 | 上海连成（集团）有限公司 | Improved self-priming pump pumping chamber |
| CN106140766A (en) * | 2015-04-23 | 2016-11-23 | 北京信智天成科技有限公司 | Circulating pump, hydro-peening system, cleaning machine and cleaning method |
| CN104963894A (en) * | 2015-06-04 | 2015-10-07 | 广东芬尼电器有限公司 | Volute type centrifugal fan with one let and two outlets |
| CN106704264A (en) * | 2017-01-12 | 2017-05-24 | 常州雷利电机科技有限公司 | Pump, water drainage circulation system with pump and household appliance |
| CN207229479U (en) * | 2017-09-20 | 2018-04-13 | 四川宇康供水设备有限公司 | Type anti scuffing hydraulic chamber of sewage pump intermediary |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171215 |
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| RJ01 | Rejection of invention patent application after publication |