CN106224291B - A kind of pump body structure that can improve fluid flow in peripheral pump - Google Patents
A kind of pump body structure that can improve fluid flow in peripheral pump Download PDFInfo
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- CN106224291B CN106224291B CN201610778897.XA CN201610778897A CN106224291B CN 106224291 B CN106224291 B CN 106224291B CN 201610778897 A CN201610778897 A CN 201610778897A CN 106224291 B CN106224291 B CN 106224291B
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- volute casing
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- water
- arc surface
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- 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 present invention relates to a kind of pump body structures that can improve fluid flow in peripheral pump, including the ontology with inner cavity, the cut water that the inner cavity can be divided into water volute casing and water outlet volute casing is provided in inner cavity, the top of ontology one side has extended outward to form a boss, the bottom margin of the boss is shaped to the first arc surface to arch upward outward, this body side surface at the top of runner is shaped to the second arc surface inwardly to arch upward, the tangent connection in lower edge of the upper edge of second arc surface and the first arc surface, the inner surface of inner cavity is formed with and the first arc surface, the corresponding streamlined divergent segment of second arc surface.Water inlet volute casing and water outlet volute casing lower part and impeller channel are tangent in the present invention, reduce the reflux because of caused by the mutation of space and local resistance and worker quality liquid at boss because of flow resistance caused by generating vortex, flow separation, it reduces worker quality liquid in pumping and improves the efficiency of peripheral pump because of the energy loss between vortex or caused by vortex interacts with wall surface.
Description
Technical field
The present invention relates to vortex pump technical fields, refer specifically to a kind of pump housing knot that can improve fluid flow in peripheral pump
Structure.
Background technique
Peripheral pump is also known as Wesco pump, regeneration pump, be one kind have a large capacity and a wide range, the huge universal machine of energy consumption, earliest
The twentieth century twenties is appeared in, is created and is promoted by the Xi Menheheng company of applying, is a kind of spy with radial blade impeller
Different vane pump, all places for having liquid to flow nearly all have pump working.Peripheral pump spies such as simple, high lift with structure
Point, thus be widely used in the every field of family and national economy.Liquid flows into impeller from suction inlet when vortex pump work,
It flows back to runner again after impeller accelerates, and energy transmission is exported after being so repeated several times by pumping chamber to the liquid in runner
Outflow.The increase of liquid energy is to convert to realize to the pressure energy of higher quality by low-quality kinetic energy in peripheral pump runner
, liquid collides repeatedly between runner and impeller, so that quite a few kinetic energy is converted into thermal energy, this work of peripheral pump
Feature determines that its efficiency can not be very high；Meanwhile the fluid flowing of pump body is a kind of three-dimensional non-steady rapids of complexity
Stream movement changes as operating condition changes, is often accompanied by the flow phenomenons such as flow separation, cavitation.Just because of this, peripheral pump
Internal flow disorder leads to the inefficiency of pump.
Domestic and foreign scholars have done a large amount of research and experiment to design and the internal flow aspect of peripheral pump at present, especially
Research to impeller and impeller channel part occupies the overwhelming majority, and has ignored into water volute casing and water outlet volute casing to peripheral pump
The influence of overall performance, peripheral pump on existing market in water inlet volute casing and be discharged in the design of volute casing exist it is many unreasonable
Place, for example, as shown in Figure 1, 2, generally there is horizontal and vertical two block baffle, it is therefore an objective to pass through reinforcement in the existing vortex pump housing
Gas-liquid separation and improve suction capacity, but it is demonstrated experimentally that this two block baffle does not play effect expected in theory, can make instead
The intracorporal flowing of water chamber is more confusing, generates high speed vortex in the region that two block baffles and pump case wall surface are formed；And
Peripheral pump in impeller channel and is discharged the coupling part of volute casing and all uses the changeover portion close to right angle at present, this can generate after to platform
Rank reflux and local losses, i.e. step cause flow separation, vortex generation and fall off, between vortex between vortex and solid wall
Interaction, cause fluid inside peripheral pump to flow more disorder, it is not energy efficient, generally 40% hereinafter, influencing in turn
The whole efficiency of pump.
Therefore, it for the structure of current peripheral pump, is improved up for further.
Summary of the invention
Fluid stream can be effectively reduced the technical problem to be solved by the invention for the present situation of prior art is to provide a kind of
Dynamic resistance, the pump body structure that can improve fluid flow in peripheral pump for improving the efficiency of pump.
The technical scheme of the invention to solve the technical problem is: a kind of can improve fluid flowing shape in peripheral pump
The pump body structure of condition, including the ontology with inner cavity, being provided in the inner cavity can be divided into water volute casing and be gone out by the inner cavity
The cut water of water volute casing, the body lower part have the stream to install impeller being connected respectively with water inlet volute casing, water outlet volute casing
The side in road, the water inlet volute casing is provided with water inlet, is provided with water outlet at the top of the water outlet volute casing, it is characterised in that: described
The top of ontology one side has extended outward to form a boss, and the bottom margin of the boss is shaped to the first circular arc to arch upward outward
Face, this body side surface at the top of the runner are shaped to the second arc surface inwardly to arch upward, the upper edge of second arc surface and institute
The tangent connection in lower edge of the first arc surface is stated, the inner surface of the inner cavity is formed with and the first arc surface, the second arc surface phase
Corresponding streamlined divergent segment.
As an improvement, the arc angle of first arc surface and the second arc surface is 45~90 °, first arc surface
And second the arc radius of arc surface be 0.5~2 times of boss thickness.Using such structure, can make into water volute casing in import
It is maximum to locate space, is then gradually reduced, it is intermediate without obvious mutation, be conducive to the flowing of fluid；And if arc angle is less than
45 °, then arc section accordingly increases, and fluid is easy to cause to collide with wall surface, influences fluid conveying effect, efficiency is caused to damage
It loses；If arc angle is greater than 90 °, the height of boss can be increased accordingly, and may will affect the installation of motor, cause the dress of pump
With inconvenience.
Preferably, on the ontology be located at water inlet below side wall from top to bottom gradually to contract and with runner side
The tangent arrangement of edge.Using such structure, the collision of fluid and inner body wall can be further decreased, reduces loss in efficiency.
It is further improved, the cut water, which includes at least, sequentially connected first surface plate, first arc-shaped from top to bottom
The top of panel and the second surface plate, the first surface plate from the water inlet inner wall extends into inner cavity, and described first is arc-shaped
The tangent connection in the lower end of the upper end of panel and the first surface plate is simultaneously arched upward towards interior cavity direction, under the first arc-shaped panel
The tangent connection in upper end at end and the second surface plate, the lower end of second surface plate extends to the upper surface of runner.Using above-mentioned
Structure can horizontally expand the space on water inlet volute casing top, and fluid is made more smoothly to flow into runner naturally, reduce cut water knot
Collision between structure and fluid, and then improve fluid conveying effect.
Further, 150~170 ° of angle, first circle are formed between first surface plate and water inlet inner wall
Curved panel corresponds to the middle and lower part arrangement of water inlet, and the arc angle of the first arc-shaped panel is 80~85 °.
Preferably, the downside that the cut water is located in water outlet volute casing is shaped to the third circle to arch upward to water inlet volute casing direction
Cambered surface, the arc angle of the third arc surface are 40~45 °.The structure flows convenient for reducing cut water structure and being discharged in volute casing to inflow
The collision of body and resistance.
In the above embodiments, the water conservancy diversion gradually extended from bottom to top to water outlet direction is provided in the water outlet volute casing
Plate, and the distance between the deflector and cut water are gradually increased from bottom to top.The deflector rises while guaranteeing suction capacity
To the effect of water conservancy diversion, while reducing energy loss caused by worker quality liquid and collision with wall, efficiency is made to get a promotion.
Preferably, the height of the deflector is 0.5~0.8 times for being discharged volute casing height.CFD analysis the results show that
The height of deflector is too low to be not achieved ideal diversion effect, and the excessive height of deflector its performance will not be mentioned further
Height also will cause waste of material.
Further preferably, the inner surface molding at the top of the water outlet volute casing is a flat surface.It, can be effective using such structure
Inhibit the generation of vortex at the top of water outlet volute casing.
Compared with the prior art, the advantages of the present invention are as follows: portion is provided with outwardly extending boss to the present invention on the body,
And between the boss and runner using reversed first circle tangent cambered surface, the second arc surface connect, meanwhile, be formed in inner cavity with
The corresponding streamlined divergent segment of first arc surface, the second arc surface, the structure make into water volute casing and water outlet volute casing lower part and leaf
Wheel runner is tangent, and change width is gentle from top to bottom for inner cavity, flows worker quality liquid in the lumen smooth, reduces because space is prominent
Reflux and local resistance caused by change；Meanwhile the setting of streamlined divergent segment reduces worker quality liquid at boss because generating
Flow resistance caused by vortex, flow separation reduces in pump worker quality liquid because between vortex or vortex and wall surface phase interaction
With caused energy loss, the efficiency of peripheral pump is improved；In addition, simple and reasonable, easy to process, cost of the invention
It is cheap, it is convenient for widespread adoption.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of background of invention
Fig. 2 is Fig. 1 cross-sectional view；
Fig. 3 is the structural schematic diagram of the embodiment of the present invention；
Fig. 4 is Fig. 3 cross-sectional view；
Fig. 5 is the side structure schematic diagram of Fig. 3.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
As seen in figures 3-5, the pump body structure that can improve fluid flow in peripheral pump of the present embodiment includes in having
The ontology 1 of chamber 10 is provided with the cut water 13 that can be divided into the inner cavity 10 into water volute casing 11 and water outlet volute casing 12 in inner cavity 10, this
1 lower part of body has the runner 14 to install impeller being connected respectively with water inlet volute casing 11, water outlet volute casing 12, volute casing 11 of intaking
Side be provided with water inlet 111, the top of water outlet volute casing 12 is provided with water outlet 121.
In the present embodiment, the top of 1 one side of ontology has extended outward to form a boss 15, the bottom sides of the boss 15
Edge is shaped to the first arc surface 151 to arch upward outward, and 1 side of ontology at 14 top of runner is shaped to the second circular arc inwardly to arch upward
Face 152, the tangent connection in lower edge of the upper edge of second arc surface 152 and the first arc surface 151, the inner surface shape of inner cavity 10
Cheng Youyu the first arc surface 151, the corresponding streamlined divergent segment 100 of the second arc surface 152.The circular arc of first arc surface 151
The arc angle β of angle [alpha] and the second arc surface 152 be 45~90 °, α can be equal or unequal with β, the first arc surface 151 and
The arc radius of second arc surface 152 is 0.5~2 times of 15 thickness H of boss.Above structure can make into water volute casing 11 in entrance
Space is maximum, is then gradually reduced, intermediate without obvious mutation, makes into water volute casing 11 and water outlet 13 lower part of volute casing and impeller channel 14
Tangent, change width is gentle from top to bottom for inner cavity 10, flows worker quality liquid in inner cavity 10 smooth, reduces because space is mutated
Caused by reflux and local resistance, be conducive to the flowing of fluid.If above-mentioned arc angle is less than 45 °, arc section is corresponding
Increase, is easy to cause fluid to collide with wall surface, influences fluid conveying effect, cause loss in efficiency；If arc angle is big
In 90 °, then the height of boss 15 can increase accordingly, and may will affect the installation of motor, cause the assembly of pump inconvenient.
As shown in figure 4, be located on ontology 1 side wall 16 of the lower section of water inlet 111 from top to bottom gradually to contract and with stream
The tangent arrangement in 14 edge of road reduces loss in efficiency to reduce the collision of fluid Yu 1 inner wall of ontology.As shown in figure 5, cut water 13 wraps
Sequentially connected first surface plate 131, the first arc-shaped panel 132 and the second surface plate 133 from top to bottom, the first plane are included
The top of plate 131 from 111 inner wall of water inlet extends into inner cavity 10, the upper end of the first arc-shaped panel 132 and the first surface plate
The tangent connection in 131 lower end is simultaneously arched upward towards 10 direction of inner cavity, the lower end of the first arc-shaped panel 132 and the second surface plate 133
The tangent connection in upper end, the lower end of the second surface plate 133 be also connected with can make cut water 13 to runner 14 upper surface seamlessly transit
The curved panel 134 of connection.150~170 ° of angle δ, the first circle are formed between 111 inner wall of first surface plate 131 and water inlet
The middle and lower part arrangement of the corresponding water inlet 111 of curved panel 132, and the arc angle of the first arc-shaped panel 132 be 80~
85°.Above structure can horizontally expand the space on water inlet 11 top of volute casing, and fluid is made more smoothly to flow into runner naturally
14, the collision between 13 structure of cut water and fluid is reduced, and then improve fluid conveying effect.
In the present embodiment, it is discharged the water conservancy diversion for being provided in volute casing 12 and gradually extending from bottom to top to 121 direction of water outlet
Plate 17, and the distance between the deflector 17 and cut water 13 are gradually increased from bottom to top.The deflector 17 is guaranteeing suction capacity
While, play the role of water conservancy diversion, while reducing energy loss caused by worker quality liquid and collision with wall, obtains efficiency
It is promoted.The height of deflector 17 is 0.5~0.8 times for being discharged 12 height of volute casing.CFD analysis the results show that deflector 17
It is highly too low to be not achieved ideal diversion effect, and the excessive height of deflector 17 its performance will not be further enhanced, also
It will cause waste of material.The downside that cut water 13 is located in water outlet volute casing 12 is shaped to the third to arch upward to water inlet 11 direction of volute casing
Arc surface 135, the arc angle of the third arc surface 135 are 40~45 °, are discharged snail in order to reduce 13 structure of cut water to inflow
The collision of fluid and resistance in room 12.
As shown in figure 5, the inner surface molding at 12 top of water outlet volute casing is a flat surface 122, volute casing 12 is discharged with effective inhibition
The generation of top vortex.
Claims (9)
1. a kind of pump body structure that can improve fluid flow in peripheral pump, described including the ontology (1) with inner cavity (10)
The cut water (13) that the inner cavity (10) can be divided into water volute casing (11) and water outlet volute casing (12) is provided in inner cavity (10), it is described
Ontology (1) lower part has the runner (14) to install impeller being connected respectively with water inlet volute casing (11), water outlet volute casing (12),
The side of water inlet volute casing (11) is provided with water inlet (111), is provided with water outlet (121) at the top of the water outlet volute casing (12),
It is characterized by: the top of ontology (1) one side has extended outward to form a boss (15), the bottom sides of the boss (15)
Edge is shaped to the first arc surface (151) to arch upward outward, and ontology (1) side at the top of the runner (14) is shaped to inwardly arch upward
The second arc surface (152), the upper edge of second arc surface (152) and the lower edge of first arc surface (151) are tangent
Connection, the inner surface of the inner cavity (10) are formed with streamline corresponding with the first arc surface (151), the second arc surface (152)
Type divergent segment (100).
2. the pump body structure according to claim 1 that fluid flow in peripheral pump can be improved, it is characterised in that: described
The arc angle of first arc surface (151) and the second arc surface (152) is 45~90 °, first arc surface (151) and second
The arc radius of arc surface (152) is 0.5~2 times of boss thickness (H).
3. the pump body structure according to claim 1 that fluid flow in peripheral pump can be improved, it is characterised in that: described
On ontology (1) be located at water inlet (111) below side wall (16) from top to bottom gradually to contract and with runner (14) edge phase
Cut arrangement.
4. the pump body structure according to claim 1 that fluid flow in peripheral pump can be improved, it is characterised in that: described
Cut water (13), which includes at least, sequentially connected first surface plate (131), the first arc-shaped panel (132) and second from top to bottom
Surface plate (133), first surface plate (131) from the top of water inlet (111) inner wall to inner cavity (10) in extend, described the
The tangent connection in the upper end of one arc-shaped panel (132) and the lower end of the first surface plate (131) is simultaneously arched upward towards inner cavity (10) direction,
The tangent connection in upper end of the lower end and the second surface plate (133) of the first arc-shaped panel (132), second surface plate
(133) lower end extends to the upper surface of runner (14).
5. the pump body structure according to claim 4 that fluid flow in peripheral pump can be improved, it is characterised in that: described
150~170 ° of angle, the first arc-shaped panel are formed between first surface plate (131) and water inlet (111) inner wall
(132) the middle and lower part arrangement of corresponding water inlet (111), and the arc angle of the first arc-shaped panel (132) is 80~85 °.
6. the pump body structure according to claim 4 that fluid flow in peripheral pump can be improved, it is characterised in that: described
The downside that cut water (13) is located in water outlet volute casing (12) is shaped to the third arc surface to arch upward to water inlet volute casing (11) direction
(135), the arc angle of the third arc surface (135) is 40~45 °.
7. the pump housing knot according to any one of claims 1 to 6 that fluid flow in peripheral pump can be improved
Structure, it is characterised in that: be provided with the water conservancy diversion gradually extended from bottom to top to water outlet (121) direction in water outlet volute casing (12)
Plate (17), and the distance between the deflector (17) and cut water (13) are gradually increased from bottom to top.
8. the pump body structure according to claim 7 that fluid flow in peripheral pump can be improved, it is characterised in that: described
The height of deflector (17) is 0.5~0.8 times for being discharged volute casing height.
9. the pump housing knot according to any one of claims 1 to 6 that fluid flow in peripheral pump can be improved
Structure, it is characterised in that: the inner surface molding at the top of water outlet volute casing (12) is a flat surface (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610778897.XA CN106224291B (en) | 2016-08-30 | 2016-08-30 | A kind of pump body structure that can improve fluid flow in peripheral pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610778897.XA CN106224291B (en) | 2016-08-30 | 2016-08-30 | A kind of pump body structure that can improve fluid flow in peripheral pump |
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| CN106224291A CN106224291A (en) | 2016-12-14 |
| CN106224291B true CN106224291B (en) | 2018-12-04 |
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| CN201610778897.XA Active CN106224291B (en) | 2016-08-30 | 2016-08-30 | A kind of pump body structure that can improve fluid flow in peripheral pump |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701513B (en) * | 2017-11-10 | 2024-04-19 | 利欧集团浙江泵业有限公司 | Pump body of vortex pump |
| CN114992164B (en) * | 2022-05-20 | 2024-04-16 | 利欧集团浙江泵业有限公司 | Shell for self-priming pump with high water return efficiency |
| CN115143144B (en) * | 2022-05-20 | 2024-07-19 | 利欧集团浙江泵业有限公司 | High suction Cheng Keti structure for self-priming pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2084115U (en) * | 1991-02-08 | 1991-09-04 | 孙支昌 | Anti-corrosive swirl pump |
| CN202937508U (en) * | 2012-11-07 | 2013-05-15 | 宁波沃力机电有限公司 | Anti-corrosion peripheral pump embedded with copper inserts |
| CN206071951U (en) * | 2016-08-30 | 2017-04-05 | 浙江新控泵业有限公司 | A kind of pump body structure that can improve fluid flow in peripheral pump |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3718122B2 (en) * | 2000-12-14 | 2005-11-16 | アスモ株式会社 | Centrifugal centrifugal pump |
| JP2010007563A (en) * | 2008-06-26 | 2010-01-14 | Panasonic Electric Works Co Ltd | Pump |
-
2016
- 2016-08-30 CN CN201610778897.XA patent/CN106224291B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2084115U (en) * | 1991-02-08 | 1991-09-04 | 孙支昌 | Anti-corrosive swirl pump |
| CN202937508U (en) * | 2012-11-07 | 2013-05-15 | 宁波沃力机电有限公司 | Anti-corrosion peripheral pump embedded with copper inserts |
| CN206071951U (en) * | 2016-08-30 | 2017-04-05 | 浙江新控泵业有限公司 | A kind of pump body structure that can improve fluid flow in peripheral pump |
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| CN106224291A (en) | 2016-12-14 |
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Address after: The town of Zhejiang province 317525 Daxi road Wenling City, No. 518 Patentee after: ZHEJIANG SINCONTROL PUMP INDUSTRY Co.,Ltd. Address before: The town of Zhejiang province 317525 Daxi road Wenling City, No. 518 Patentee before: ZHEJIANG SINCONTROL PUMP INDUSTRY Co.,Ltd. |