CN108612675A - A kind of adjustable volute casing device - Google Patents
A kind of adjustable volute casing device Download PDFInfo
- Publication number
- CN108612675A CN108612675A CN201810407599.9A CN201810407599A CN108612675A CN 108612675 A CN108612675 A CN 108612675A CN 201810407599 A CN201810407599 A CN 201810407599A CN 108612675 A CN108612675 A CN 108612675A
- Authority
- CN
- China
- Prior art keywords
- cut water
- spiral case
- pedestal
- straight panel
- casing device
- Prior art date
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 124
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000000945 filler Substances 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 210000004907 gland Anatomy 0.000 claims abstract description 6
- 230000033001 locomotion Effects 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- -1 O-ring Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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
- F04D29/40—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
-
- 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
Landscapes
- 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 adjustable volute casing devices, including spiral case, cut water, pedestal, O-ring, filler, filler pressing sleeve, hold-down grid, holder, drive screw, bearing, bearing gland, handwheel, cut water is mutual indepedent with spiral case, cut water one end is in straight panel shape, the other end is cylinder, the position that cut water is corresponded on spiral case is provided with the straight panel shape guide groove to match with cut water, cut water straight panel shape end is arranged in straight panel shape guide groove, cut water cylindrical end stretches out spiral case and is driven by screw thread and drive screw cooperation, cut water is driven to be moved along straight panel shape guide groove under the action of handwheel, dynamic seal is provided between cylindrical bar and pedestal, seal the fluid in spiral case.By the above-mentioned means, the present invention can adjust position of the cut water with respect to spiral case according to actual operating mode, change cut water angle, the distance and throat opening area of cut water and impeller so that in off-design operating mode, spiral case can also obtain preferable matching with impeller.
Description
Technical field
The present invention relates to adjustable volute casing devices, are especially used for the volute casing device of end suction centrifugal pump.
Background technology
Currently, end suction centrifugal pump be widely used in industrial liquid conveying and urban water supply and sewerage, skyscraper pressurized water supply,
The cold-warm waters such as heating are circularly-supercharged and air-conditioner set cycle, cooling water convey etc..The spiral case of end suction centrifugal pump is substantially fixation
Constant, it is according to rated point optimization design (i.e. in metered flow, the efficiency highest of water pump), when end sucking pump to hold the design of sucking pump
It is when deviateing rated point work, i.e., less efficient under sub-load and overload conditions, and deviation metered flow is remoter,
Efficiency declines more；Another aspect end sucking pump deviates the operation of rated designs flow and also will produce excessive vibration and noise.
The purpose of the present invention is in view of the drawbacks of the prior art and improve water pump under sub-load and overload conditions
Hydraulic efficiency reduces vibration and noise, provides a solution.
Invention content
To solve the problems, such as above-mentioned background technology, the purpose of the present invention is to provide a kind of adjustable spiral cases to fill
It sets, to reach the hydraulic efficiency for improving end sucking pump under sub-load and overload conditions, while reducing end sucking pump and deviateing volume
The purpose for the excessive vibration and noise that constant flow work generates.
In order to achieve the above objectives, technical scheme is as follows：
A kind of adjustable volute casing device, including：
Spiral case, the channel that fluid flows through, fluid is during flowing through spiral case, and along spiral case direction, speed reduces, pressure liter
It is high；
Cut water, the flow area for adjusting the spiral case, described cut water one end are in straight panel shape, and the other end is cylinder；
Pedestal is fixed on the spiral case, supports the cut water and attachment；
O-ring, circular plastic seal ring seal liquid；
Filler, the material for filling sealing；
Filler pressing sleeve, in a ring, for limiting the filler；
Hold-down grid, for fixing the filler pressing sleeve；
Drive screw converts rotational motion into the linear motion of cut water；
Bearing is used to support the drive screw；
Bearing gland, for fixing the bearing；
Handwheel, disc type manual operation wheels；
Impeller is used for the conversion of energy, converts kinetic energy into pressure energy；
The cut water and spiral case are mutual indepedent, and the position at the corresponding cut water end in straight panel shape is provided with and cut water phase on spiral case
Matched straight panel shape guide groove, cut water straight panel end are arranged in straight panel shape guide groove, and the cut water other end stretches out spiral case and is provided with
Motion thread is connect by drive screw with screw-driven, drives cut water along straight panel shape under the rotary motion of the handwheel
Guide groove moves linearly.
Preferably, the cut water can do linear reciprocating motion between the two limit positions in spiral case straight panel shape guide groove, and two
Area of section consecutive variations between extreme position.
Preferably, be volute chamber spiral wall close to the side wall of cut water lower surface inside the spiral case, at volute outlet close to every
The side wall of tongue upper surface is volute chamber diffusion wall, and the lower surface of cut water and volute chamber spiral wall are tangent, and upper surface and the volute chamber of cut water expand
It is tangent to dissipate wall.
Preferably, the cut water cylindrical end screw thread is internal thread or external screw thread.
Preferably, the scroll outer is provided with pedestal close to cut water position, and there is the pedestal accommodating cut water back and forth to transport
O-ring is arranged as static seal in dynamic cavity between the pedestal and the spiral case.
Preferably, the cut water cylindrical end screw thread stretches out except the pedestal, with the cut water cylindrical end screw-thread fit
Column is fixed along cylinder axis direction position, the cut water can be made along the cut water cylinder axis by rotating the column
Direction is for linear motion.
Preferably, it is additionally provided with seal section between the cut water cylindrical end screw thread and cut water end, seal section is placed in compression
In filler, the filler is limited as dynamic seal between the seal section and the seal chamber of the pedestal, seals reciprocal fortune
Fluid between dynamic cut water seal section and pedestal, the cut water cylindrical end motion thread and the fluid isolation in the spiral case.
Preferably, the cut water cylindrical end screw thread is located inside the pedestal, with the cut water cylindrical end screw-thread fit
Column is fixed along cylinder axis direction position, the cut water can be made to make directly along cylinder axis direction by rotating the column
Line moves.
Preferably, the fluid between the column seal section and pedestal of the packing seal rotary motion.
Preferably, the drive screw is driven by the handwheel.
Through the above technical solutions, a kind of adjustable volute casing device provided by the invention, by cut water with respect to spiral case
Cut water angle is realized in the adjustment of position, the adjusting of the distance and throat opening area of cut water and impeller, to make spiral case and cut water match
More operating conditions improve hydraulic efficiency of the end sucking pump under sub-load and overload conditions, while reducing end sucking pump and deviateing
The excessive vibration and noise that metered flow work generates.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described.
Fig. 1 is a kind of structural schematic diagram of adjustable volute casing device disclosed in the embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of the cut water of adjustable volute casing device disclosed in the embodiment of the present invention；
In figure：
1. spiral case；2. cut water；3. pedestal；4.O shape circles；5. filler；6. filler pressing sleeve；7. hold-down grid；8. holder；9. passing
Dynamic screw rod；10. bearing；11. bearing gland；12. handwheel；21. impeller；22. axis；23. key；2a. cut water transmission segments；2b. cut waters
Seal section.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes.
A kind of adjustable volute casing device provided by the invention, as shown in Figs. 1-2, including：Spiral case 1, cut water 2, pedestal 3, O
Shape circle 4, filler 5, filler pressing sleeve 6, hold-down grid 7, drive screw 9, bearing 10, bearing gland 11, handwheel 12, impeller 21, axis
22 and key 23, cut water 2 includes cut water transmission segment 2a and cut water seal section 2b, and the cut water 2 is mutual indepedent with spiral case 1, cut water 2 one
End is in straight panel shape, and the position that cut water 2 is corresponded on spiral case 1 is provided with the straight panel shape guide groove to match with cut water 2, the straight panel of cut water 2
Shape end is arranged in straight panel shape guide groove, and 2 other end of cut water is cylinder, and the cylindrical end of cut water 2 stretches out spiral case 1 and is provided with transmission
Screw thread connect with screw-driven the transmission for realizing movement by drive screw 9, driven under the action of handwheel 12 cut water 2 along
Straight panel shape guide groove moves linearly.
Side wall of 1 inside of spiral case close to 2 lower surface of cut water is volute chamber spiral wall, and 1 exit of spiral case is close to 2 upper surface of cut water
Side wall be volute chamber diffusion wall, the lower surface of cut water 2 and volute chamber spiral wall are tangent, upper surface and the volute chamber diffusion wall phase of cut water 2
It cuts, cut water 2 can do linear reciprocating motion between the two limit positions in 1 straight panel shape guide groove of spiral case, between two limit positions
Area of section consecutive variations.
When end suction centrifugal pump works, torque is passed to impeller 21 by prime mover by axis 22, and axis 22 and impeller 21 pass through key
23 connections, impeller 21 transfer kinetic energy to fluid, and by gradually being spread along spiral case 1, part kinetic energy switching to pressure energy reaches fluid
The purpose of supercharging；The position of the opposite spiral case of cut water 2, cut water angle, the distance and throat opening area of cut water 2 and impeller 21 all can opposite ends
The performance for being sucked away from heart pump has an impact.By cut water 2 cut water angle, cut water 2 and impeller are realized with respect to the adjustment of the position of spiral case 1
The adjusting of 21 distance and throat opening area improves end sucking pump in portion to make spiral case 1 and cut water 2 match more operating conditions
Divide the hydraulic efficiency under load and overload conditions, while reducing end sucking pump and deviateing the excessive vibration and make an uproar that metered flow work generates
Sound.
1 outside of spiral case is provided with pedestal 3 close to 2 position of cut water, and pedestal 3 has the cavity that accommodating cut water 2 moves back and forth, every
Tongue 2 is assemblied on pedestal 3 and holder 8, is sealed by O-ring 4 between pedestal 3 and spiral case 1, and cut water 2 passes through 9 handle of drive screw
The rotary motion of wheel 12 is converted to linear motion, and cut water 2 moves in a straight line in pedestal 3 and holder 8, adjusts cut water 2 with respect to snail
The position of shell 1 changes cut water angle, the distance and throat opening area of cut water 2 and impeller 21.Cut water seal section 2b is by filler 5 by filling out
Expect that pressing sleeve 6 limits, seals the fluid between the cut water seal section 2b of reciprocating motion and pedestal 3.Hold-down grid 7 and pass through fastener
The fixed axial position for fixing filler pressing sleeve 6 on the base 3.Drive screw 9 rotates in the range of cut water transmission segment 2a to be made
2 tandem of cut water moves, and adjusts throat opening area of the cut water 2 with respect to the position and spiral case 1 of spiral case 1.Drive screw 9 passes through bearing
10 supports, bearing gland 11 are fixed on bearing 10 on holder 8 by fastener handle.
Drive screw 9 is driven by handwheel 12, can also be driven by other automatic devices, such as Electric Actuator or
Pneumatic actuator.
Cut water cylindrical end screw thread is internal thread or external screw thread, and cut water cylindrical end screw thread stretches out except pedestal 3, with cut water cylinder
The column of end screw-thread fit is fixed along cylinder axis direction position, cut water 2 can be made along cut water cylindrical shaft by rotating column
Line direction is for linear motion, cut water cylindrical end motion thread and the fluid isolation in spiral case 1.
A kind of adjustable volute casing device disclosed by the invention, by cut water with respect to spiral case position adjustment come realize every
The adjusting of the distance and throat opening area of tongue angle, cut water and impeller improves to make spiral case and cut water match more operating conditions
Hydraulic efficiency of the sucking pump under sub-load and overload conditions is held, while reducing end sucking pump and deviateing the mistake that metered flow work generates
Big vibration and noise.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (10)
1. a kind of adjustable volute casing device, which is characterized in that including：
Spiral case, the channel that fluid flows through, fluid is during flowing through spiral case, and along spiral case direction, speed reduces, pressure rise；
Cut water, the flow area for adjusting the spiral case, described cut water one end are in straight panel shape, and the other end is cylinder；
Pedestal is fixed on the spiral case, supports the cut water and attachment；
O-ring, circular plastic seal ring seal liquid；
Filler, the material for filling sealing；
Filler pressing sleeve, in a ring, for limiting the filler；
Hold-down grid, for fixing the filler pressing sleeve；
Drive screw converts rotational motion into the linear motion of cut water；
Bearing is used to support the drive screw；
Bearing gland, for fixing the bearing；
Handwheel, disc type manual operation wheels；
Impeller is used for the conversion of energy, converts kinetic energy into pressure energy；
The cut water and spiral case are mutual indepedent, and the position at the corresponding cut water end in straight panel shape is provided on spiral case matches with cut water
Straight panel shape guide groove, cut water straight panel end is arranged in straight panel shape guide groove, and the cut water other end stretches out spiral case and is simultaneously provided with transmission
Screw thread is connect by drive screw with screw-driven, drives cut water along straight panel shape guide groove under the rotary motion of the handwheel
Linear movement.
2. a kind of adjustable volute casing device according to claim 1, which is characterized in that the cut water can be in spiral case straight panel
Linear reciprocating motion is done between two limit positions in shape guide groove, the area of section consecutive variations between two limit positions.
3. a kind of adjustable volute casing device according to claim 1, which is characterized in that close to cut water inside the spiral case
The side wall of lower surface is volute chamber spiral wall, close to the side wall of cut water upper surface is volute chamber diffusion wall at volute outlet, under cut water
Surface and volute chamber spiral wall are tangent, and the upper surface of cut water and volute chamber diffusion wall are tangent.
4. a kind of adjustable volute casing device according to claim 1, which is characterized in that the cut water cylindrical end screw thread is
Internal thread or external screw thread.
5. a kind of adjustable volute casing device according to claim 1, which is characterized in that the scroll outer is close to cut water
Position is provided with pedestal, and the pedestal has the cavity that accommodating cut water moves back and forth, O is arranged between the pedestal and the spiral case
Shape circle is as static seal.
6. a kind of adjustable volute casing device according to claim 5, which is characterized in that the cut water cylindrical end screw thread is stretched
Go out except the pedestal, fixed along cylinder axis direction position with the column of the cut water cylindrical end screw-thread fit, by turning
Moving the column can make the cut water for linear motion along cut water cylinder axis direction.
7. a kind of adjustable volute casing device according to claim 1, which is characterized in that the cut water cylindrical end screw thread with
Seal section is additionally provided between cut water end, seal section is placed in the filler of compression, and the filler is limited as dynamic seal in institute
It states between seal section and the seal chamber of the pedestal, seals the fluid between the cut water seal section of reciprocating motion and pedestal, it is described
Cut water cylindrical end motion thread and the fluid isolation in the spiral case.
8. a kind of adjustable volute casing device according to claim 5, which is characterized in that the cut water cylindrical end screw thread position
It inside the pedestal, is fixed along cylinder axis direction position with the column of the cut water cylindrical end screw-thread fit, by turning
Moving the column can make the cut water for linear motion along cylinder axis direction.
9. a kind of adjustable volute casing device according to claim 1, which is characterized in that the packing seal rotary motion
Column seal section and pedestal between fluid.
10. a kind of adjustable volute casing device according to claim 1, which is characterized in that the drive screw passes through institute
State handwheel driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810407599.9A CN108612675A (en) | 2018-05-02 | 2018-05-02 | A kind of adjustable volute casing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810407599.9A CN108612675A (en) | 2018-05-02 | 2018-05-02 | A kind of adjustable volute casing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108612675A true CN108612675A (en) | 2018-10-02 |
Family
ID=63661627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810407599.9A Pending CN108612675A (en) | 2018-05-02 | 2018-05-02 | A kind of adjustable volute casing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108612675A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022374A (en) * | 2019-11-19 | 2020-04-17 | 浙江理工大学 | Centrifugal pump volute with adjustable partition tongue shape |
| CN112324711A (en) * | 2020-11-04 | 2021-02-05 | 上海凯士比泵有限公司 | Volute with performance adjusting function and volute pump |
| CN113090585A (en) * | 2021-04-16 | 2021-07-09 | 江苏大学 | Energy recovery turbine volute structure |
| CN113294341A (en) * | 2021-04-30 | 2021-08-24 | 湘潭大学 | Fire pump with adjustable partition tongue and adjusting method thereof |
| CN114198321A (en) * | 2021-12-03 | 2022-03-18 | 合肥联宝信息技术有限公司 | Centrifugal fan with self-adaptive flow channel |
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| CN101435437A (en) * | 2008-12-18 | 2009-05-20 | 中国农业大学 | Centrifugal pump body |
| CN201412395Y (en) * | 2009-03-09 | 2010-02-24 | 国投新疆罗布泊钾盐有限责任公司 | Cutting blade compensating device of centrifugal pump |
| US20100266390A1 (en) * | 2009-04-20 | 2010-10-21 | Borgwarner Inc. | Simplified variable geometry turbocharger with sliding gate and multiple volutes |
| CN201953419U (en) * | 2010-12-24 | 2011-08-31 | 康跃科技股份有限公司 | Turbo machine with variable cross section |
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| CN105090118A (en) * | 2015-08-27 | 2015-11-25 | 江苏大学 | Self-priming centrifugal pump body with separation tongue gap capable of being precisely adjusted |
| CN107503985A (en) * | 2017-09-21 | 2017-12-22 | 上海上涵自动化科技有限公司 | Receded disk impeller machinery |
| CN208123122U (en) * | 2018-05-02 | 2018-11-20 | 上海上涵自动化科技有限公司 | A kind of adjustable volute casing device |
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2018
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| CN101435437A (en) * | 2008-12-18 | 2009-05-20 | 中国农业大学 | Centrifugal pump body |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022374A (en) * | 2019-11-19 | 2020-04-17 | 浙江理工大学 | Centrifugal pump volute with adjustable partition tongue shape |
| CN111022374B (en) * | 2019-11-19 | 2024-05-28 | 浙江理工大学 | Centrifugal pump volute casing with adjustable partition tongue shape |
| CN112324711A (en) * | 2020-11-04 | 2021-02-05 | 上海凯士比泵有限公司 | Volute with performance adjusting function and volute pump |
| CN113090585A (en) * | 2021-04-16 | 2021-07-09 | 江苏大学 | Energy recovery turbine volute structure |
| CN113294341A (en) * | 2021-04-30 | 2021-08-24 | 湘潭大学 | Fire pump with adjustable partition tongue and adjusting method thereof |
| CN113294341B (en) * | 2021-04-30 | 2022-06-14 | 湘潭大学 | Fire pump with adjustable partition tongue and adjusting method thereof |
| CN114198321A (en) * | 2021-12-03 | 2022-03-18 | 合肥联宝信息技术有限公司 | Centrifugal fan with self-adaptive flow channel |
| CN114198321B (en) * | 2021-12-03 | 2023-10-27 | 合肥联宝信息技术有限公司 | Centrifugal fan with self-adaptive runner |
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Application publication date: 20181002 |