CN111022374A - Centrifugal pump volute with adjustable partition tongue shape - Google Patents
Centrifugal pump volute with adjustable partition tongue shape Download PDFInfo
- Publication number
- CN111022374A CN111022374A CN201911132207.3A CN201911132207A CN111022374A CN 111022374 A CN111022374 A CN 111022374A CN 201911132207 A CN201911132207 A CN 201911132207A CN 111022374 A CN111022374 A CN 111022374A
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- CN
- China
- Prior art keywords
- volute
- centrifugal pump
- hinge
- plates
- hinged
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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.)
- Granted
Links
- 238000005192 partition Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 210000002105 tongue Anatomy 0.000 abstract description 32
- 238000000926 separation method Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
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
- F04D29/428—Discharge tongues
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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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/466—Fluid-guiding means, e.g. diffusers adjustable especially adapted for liquid fluid pumps
Landscapes
- 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 centrifugal pump. The purpose is to provide a centrifugal pump volute with adjustable partition tongue shapes, so that the influences of partition tongues with different geometric shapes on hydraulic performance can be researched, a plurality of sets of related centrifugal pumps are not required to be produced, the cost can be saved, and the research work efficiency can be improved. The technical scheme is as follows: a centrifugal pump volute with an adjustable partition tongue shape comprises a volute arranged on a base and a wedge-shaped guide groove communicated with the circumferential surface of the volute; the method is characterized in that: the communicated part of the volute and the wedge-shaped guide groove is provided with a tongue-isolating assembly which is inserted in a tangential direction and can adjust the shape so as to adjust the flow of the wedge-shaped guide groove.
Description
Technical Field
The invention relates to a centrifugal pump, in particular to a centrifugal pump volute with a changeable shape of a separation tongue.
Background
With the increasing importance of people on the problems of the operation stability and the vibration of the centrifugal pump, the research on the liquid flow in the centrifugal pump is very necessary. The dynamic and static interference between the centrifugal pump impeller and the partition tongue is an important reason for inducing the liquid flow of the centrifugal pump to vibrate. Therefore, it is necessary to study the influence of the partition tongues with different geometric shapes on the hydraulic performance of the centrifugal pump. In the past, when the influence of partition tongues with different geometric shapes on the performance of the centrifugal pump is required to be tested, a plurality of sets of related centrifugal pumps must be produced, and the centrifugal pump has low working efficiency and high cost.
Disclosure of Invention
The invention aims to overcome the defects of the background technology, provides a centrifugal pump volute with a changeable partition tongue shape, so as to achieve the purposes of researching the influence of partition tongues with different geometric shapes on hydraulic performance, not producing a plurality of sets of related centrifugal pumps, saving cost and improving research work efficiency.
The invention provides the following technical scheme for achieving the purpose:
a centrifugal pump volute with an adjustable partition tongue shape comprises a volute arranged on a base and a wedge-shaped guide groove communicated with the circumferential surface of the volute; the method is characterized in that: the communicated part of the volute and the wedge-shaped guide groove is provided with a tongue-isolating assembly which is inserted in a tangential direction and can adjust the shape so as to adjust the flow of the wedge-shaped guide groove.
The partition tongue assembly comprises two straight plates which are mutually overlapped and fixed on the volute, a sliding groove group which is formed between the two straight plates and runs through the length direction, two hinge plate groups which are symmetrically arranged, the right ends of the hinge plate groups are mutually hinged, the left ends of the hinge plate groups are respectively hinged with one straight plate, and an adjusting rod group which is arranged in the sliding groove group in a sliding way and is connected with the two hinge plates; each hinge plate group comprises a plurality of hinge plates which are sequentially hinged end to end; the number of the adjusting rods in the adjusting rod group is one less than that of the hinged plates in the hinged plate group; the right end of each adjusting rod is hinged with two corresponding hinge shafts in the two hinge plate groups only through a connecting rod, and the left end of each adjusting rod passes through the sliding groove and extends to the outside of the volute and then is locked by a locking component.
The locking assembly comprises a locking screw which transversely penetrates through the two straight plates to press the locking adjusting rod.
The widths of all the hinge plates in the hinge plate group are equal.
In the two straight plates, the upper surface of the upper straight plate is tangent to the volute diffusion wall, and the lower surface of the lower straight plate is tangent to the volute spiral wall.
The sliding groove group comprises a plurality of sliding grooves which are arranged in parallel and the number of the sliding grooves is the same as that of the hinge rods; the adjusting rods are embedded into the corresponding sliding grooves one by one.
The working principle of the invention is as follows: when the geometric shape of the head of the separation tongue is adjusted (as shown in fig. 2 and 5), the locking screw is loosened, then the adjusting rod is pushed forwards or pulled backwards, and the shape of the head of the separation tongue is changed; by adjusting different adjusting rods, the separation tongues with different geometric shapes can be combined; after the adjustment is finished, the locking screw is screwed down, and the hydraulic performance of the centrifugal pump can be tested.
The invention has the beneficial effects that: the volute casing with the partition tongues of different specifications can change the geometric shapes of the partition tongues without disassembly by adjusting the adjusting rods. Under the condition of not producing a plurality of sets of related centrifugal pumps, the influence of the partition tongues with different geometric shapes on the performance of the centrifugal pumps can be tested, so that the research working efficiency is effectively improved, the time and the capital cost can be saved, and the partition tongues are welcomed by related research units.
Drawings
Fig. 1 is a front view (sectional view) of the present invention.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
Figure 3 is one of the schematic perspective views (extended state) of the head of the tongue assembly of the present invention.
FIG. 4 is a schematic front view of the head of the tongue assembly of the present invention (in an extended state).
FIG. 5 is a second perspective view of the head of the tongue assembly of the present invention (in a retracted state).
FIG. 6 is a second schematic front view of the head of the tongue assembly of the present invention (in a contracted state).
The figure shows that: 1. an adjusting rod group; 3. a locking screw; 4. a base fastening screw; 5. a tongue assembly base; 6. a volute; 7. a straight plate; 8. a tongue partition head; 9. a centrifugal pump base; 10. a first hinge shaft; 11. a second hinge shaft; 12. a third hinge shaft; 13. a fourth hinge shaft; 14. a first adjusting lever; 15. a second adjusting lever; 16. a third adjusting rod; 17. a first hinge plate; 18. a second hinge plate; 19. a third hinge plate; 20. a fourth hinge plate; 21. an upper connecting rod; 22. a lower connecting rod; 23. a middle articulated shaft; 27. a wedge-shaped guide groove.
Detailed description of the invention
The following further description is made with reference to the embodiments shown in the drawings.
The centrifugal pump volute with the adjustable partition tongue shape shown in the drawing comprises a volute 6 arranged on a base 9 and a wedge-shaped guide groove 27 communicated with the circumferential surface of the volute; this is similar to existing centrifugal pump volutes.
The improvement of the invention is that: the communication part of the volute and the wedge-shaped guide groove is provided with a tangential insertion and shape-adjustable baffle assembly for adjusting the flow of the wedge-shaped guide groove.
In the partition tongue component, two straight plates 7 are mutually overlapped and fixed on the volute, and a sliding groove group in the through length direction is formed between the two straight plates; after the front ends of the two straight plates extend into the volute, the upper surface of the upper straight plate is tangent to a diffusion wall (a wedge-shaped guide groove) of the volute (an inner cavity of the volute), and the lower surface of the lower straight plate is tangent to a spiral wall of the volute; the rear ends 7-1 of the two straight plates overhang the outside of the volute, and the middle parts of the two straight plates are connected with each other through a tongue isolating assembly base 5 (the two straight plates are fixed with the tongue isolating assembly base through screws); the base of the partition tongue component is also fixed on the volute through a base fastening screw 4.
The two hinged plate groups are symmetrically arranged, the right ends of the two hinged plate groups are hinged with each other, and the left ends of the two hinged plate groups are respectively hinged with a straight plate; the adjusting rod group 1 is arranged in the sliding groove group in a sliding mode and one end of the adjusting rod group is connected with the right ends of the two hinge plates. Each hinge plate group comprises a plurality of hinge plates which are sequentially hinged end to end, and the width of each hinge plate in the hinge plate groups is equal. As can be seen in fig. 2, 3: the first hinge plate 17, the second hinge plate 18, the third hinge plate 19 and the fourth hinge plate 20 are sequentially connected end to end through a second hinge shaft 11, a third hinge shaft 12 and a fourth hinge shaft 13; the left end of the first hinged plate is hinged with the right end of the straight plate through a first hinged shaft 10; the right ends of the fourth hinge plates 20 of the two hinge plate groups are hinged to each other through an intermediate hinge shaft 21.
The sliding groove group comprises a plurality of sliding grooves which are arranged in parallel and the number of the sliding grooves is the same as that of the hinge rods, and the adjusting rods (a first adjusting rod 14, a second adjusting rod 15 and a third adjusting rod 16 shown in fig. 2) are embedded into the corresponding sliding grooves one by one. The number of the adjusting rods in the adjusting rod group is one less than that of the hinged plates in one hinged plate group; the right end of each adjusting rod is hinged to two corresponding hinge shafts of the two hinge plate sets only through a connecting rod (for example, an upper connecting rod 21 and a lower connecting rod 22 hinged to the right end of the first adjusting rod 14 are hinged to two second hinge shafts 11 of the two hinge plate sets respectively), and the left end of each adjusting rod passes through the sliding groove and extends to the outside of the volute, and then is locked by a locking component.
The locking assembly comprises a plurality of locking screws 3 positioned outside the volute, the locking screws transversely penetrate through the two straight plates to press and lock the adjusting rods (a plurality of screw holes corresponding to each other are transversely formed in the two straight plates, and the locking screws are screwed into the screw holes one by one and respectively press and lock the corresponding adjusting rods). The adjusting rod is fixed by screwing the locking screw after being adjusted to the designated position.
When the invention works, the two first hinged plates 17 can be expanded towards two sides by pushing the first adjusting rod 14, the limit position of the pushing of the adjusting rod is the position when the first hinged plates 17 are parallel to the straight plate, and the motion mode of the second adjusting rod 15 is the same as that of the adjusting rod 14. Pushing the third adjustment lever 16 increases the opening of the uppermost portion of the tongue, and pulling back decreases the opening. The adjusting rod can be fixed by screwing the adjusting rod fastening screw 3 after the adjusting rod is adjusted to the designated position. By adjusting the positions of the three adjusting rods, the separation tongues with different geometric shapes can be combined (see fig. 3-6).
Claims (6)
1. A centrifugal pump volute with an adjustable baffle tongue shape comprises a volute (6) arranged on a base and a wedge-shaped guide groove (27) communicated with the circumferential surface of the volute; the method is characterized in that: the communicated part of the volute and the wedge-shaped guide groove is provided with a tongue-isolating assembly which is inserted in a tangential direction and can adjust the shape so as to adjust the flow of the wedge-shaped guide groove.
2. The adjustable baffle shape centrifugal pump volute of claim 1, wherein: the partition tongue component comprises two straight plates (7) which are mutually overlapped and fixed on the volute, a sliding groove group which is formed between the two straight plates and runs through the length direction, two hinge plate groups which are symmetrically arranged, the right ends of the hinge plate groups are mutually hinged, the left ends of the hinge plate groups are respectively hinged with one straight plate, and an adjusting rod group which is arranged in the sliding groove group in a sliding way and is connected with the two hinge plates; each hinge plate group comprises a plurality of hinge plates which are sequentially hinged end to end; the number of the adjusting rods in the adjusting rod group is one less than that of the hinged plates in the hinged plate group; the right end of each adjusting rod is hinged with two corresponding hinge shafts in the two hinge plate groups only through a connecting rod, and the left end of each adjusting rod passes through the sliding groove and extends to the outside of the volute and then is locked by a locking component.
3. The adjustable baffle shape centrifugal pump volute of claim 2, wherein: the locking assembly comprises a locking screw (3) which transversely penetrates through the two straight plates to press the locking adjusting rod.
4. The adjustable baffle shape centrifugal pump volute of claim 3, wherein: the widths of all the hinge plates in the hinge plate group are equal.
5. The adjustable baffle shape centrifugal pump volute of claim 4, wherein: in the two straight plates, the upper surface of the upper straight plate is tangent to the volute diffusion wall, and the lower surface of the lower straight plate is tangent to the volute spiral wall.
6. The adjustable baffle shape centrifugal pump volute of claim 5, wherein: the sliding groove group comprises a plurality of sliding grooves which are arranged in parallel and the number of the sliding grooves is the same as that of the hinge rods; the adjusting rods are embedded into the corresponding sliding grooves one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911132207.3A CN111022374B (en) | 2019-11-19 | 2019-11-19 | Centrifugal pump volute casing with adjustable partition tongue shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911132207.3A CN111022374B (en) | 2019-11-19 | 2019-11-19 | Centrifugal pump volute casing with adjustable partition tongue shape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111022374A true CN111022374A (en) | 2020-04-17 |
| CN111022374B CN111022374B (en) | 2024-05-28 |
Family
ID=70200547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911132207.3A Active CN111022374B (en) | 2019-11-19 | 2019-11-19 | Centrifugal pump volute casing with adjustable partition tongue shape |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111022374B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561477A (en) * | 2020-05-13 | 2020-08-21 | 上海东方泵业(集团)有限公司 | Novel split double-suction pump with detachable tongue-isolating movable block |
| CN113294341A (en) * | 2021-04-30 | 2021-08-24 | 湘潭大学 | Fire pump with adjustable partition tongue and adjusting method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2367447A1 (en) * | 1976-10-15 | 1978-05-12 | Mondelin Roger | Folding work trestle table - has horizontal fixing bar which is tubular and permits height adjustment by telescopic action |
| JP2014001656A (en) * | 2012-06-18 | 2014-01-09 | Panasonic Corp | Centrifugal blower and cloth dryer including the same |
| CN204186657U (en) * | 2014-10-31 | 2015-03-04 | 合肥联宝信息技术有限公司 | For the dust extraction fan of notebook computer |
| CN108612675A (en) * | 2018-05-02 | 2018-10-02 | 上海上涵自动化科技有限公司 | A kind of adjustable volute casing device |
| CN211116804U (en) * | 2019-11-19 | 2020-07-28 | 浙江理工大学 | Centrifugal pump volute with changeable flow channel shape |
-
2019
- 2019-11-19 CN CN201911132207.3A patent/CN111022374B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2367447A1 (en) * | 1976-10-15 | 1978-05-12 | Mondelin Roger | Folding work trestle table - has horizontal fixing bar which is tubular and permits height adjustment by telescopic action |
| JP2014001656A (en) * | 2012-06-18 | 2014-01-09 | Panasonic Corp | Centrifugal blower and cloth dryer including the same |
| CN204186657U (en) * | 2014-10-31 | 2015-03-04 | 合肥联宝信息技术有限公司 | For the dust extraction fan of notebook computer |
| CN108612675A (en) * | 2018-05-02 | 2018-10-02 | 上海上涵自动化科技有限公司 | A kind of adjustable volute casing device |
| CN211116804U (en) * | 2019-11-19 | 2020-07-28 | 浙江理工大学 | Centrifugal pump volute with changeable flow channel shape |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561477A (en) * | 2020-05-13 | 2020-08-21 | 上海东方泵业(集团)有限公司 | Novel split double-suction pump with detachable tongue-isolating movable block |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111022374B (en) | 2024-05-28 |
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