CN202023768U - Flow guiding mechanism for centrifugal pump - Google Patents
Flow guiding mechanism for centrifugal pump Download PDFInfo
- Publication number
- CN202023768U CN202023768U CN2011201083728U CN201120108372U CN202023768U CN 202023768 U CN202023768 U CN 202023768U CN 2011201083728 U CN2011201083728 U CN 2011201083728U CN 201120108372 U CN201120108372 U CN 201120108372U CN 202023768 U CN202023768 U CN 202023768U
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- CN
- China
- Prior art keywords
- top board
- flow guiding
- cylindrical casing
- centrifugal pump
- base plate
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a flow guiding mechanism for a centrifugal pump, comprising a cylindrical case. A top plate is arranged at the upper end of the cylindrical case and provided with a central hole, and a vertical convex plate is arranged at the periphery of the central hole. The center of the top plate is higher than the edge of the top plate. Spiral flow guiding vanes are arranged at the periphery below the top plate, a bottom plate is arranged below the spiral flow guiding vanes, and the upper edges and the lower edges of the spiral flow guiding vanes are respectively welded together with the top plate and the bottom plate. The diameter of the bottom plate is smaller than that of the cylindrical case, the lower end of the cylindrical case is convex towards the lower part of the bottom plate, so that a gap used as a water inlet is reserved between the outer ends of the spiral flow guiding vanes and the vertical wall of the cylindrical case. The flow guiding mechanism is structurally characterized in that a water blocking cylinder is arranged above the top plate, and the diameter of the lower end of the water blocking cylinder is larger than that of the vertical convex plate. When a water inlet of a last-level impeller is arranged on the vertical convex plate, the upper end of the water blocking cylinder is higher than a water outlet at the periphery of the last-level impeller. By adopting the flow guiding mechanism, the work efficiency of the vertical multi-level centrifugal pump can be improved. The flow guiding mechanism is suitable for the connection of two adjacent impellers of the vertical multi-level centrifugal pump.
Description
Technical field
The utility model relates to a kind of water pump, specifically, is the deflector that is used for connecting adjacent two impellers of vertical multi-stage centrifugal pump.
Background technique
Know all that at the water pump production industry in the water system of some tall buildings, for the pressure that keeps top layer resident family to supply water is constant, common method is to adopt suction booster that water system is carried out supercharging, described suction booster is a vertical multi-stage centrifugal pump.This vertical multi-stage centrifugal pump contains cylinder, and the deflector between adjacent two impellers with the company of being used for of plural a plurality of impeller is arranged in the cylinder.During work, by all impeller rotations of driven by motor.At present, deflector used on the vertical multi-stage centrifugal pump comprises cylindrical casing, and there is top board cylindrical casing upper end, has around the useful center hole of making water outlet on the top board, center hole to be used for the vertical boss that matches with the import of upper level impeller.The center height of top board is higher than its edge.Circumferentially be evenly equipped with the helical guide plate below the top board, base plate arranged below the helical guide plate, the upper and lower limit of described helical guide plate welds together respectively and between top board and base plate.Base plate diameter wherein is less than the diameter of cylindrical casing, and cylindrical casing lower end protrusion at base plate directly down, so that leave the spacing as water intake between the perpendicular wall of helical guide plate outer end and cylindrical casing.Under the installment state, the water intake of upper level impeller places on the vertical boss on the top board, and the next stage impeller is in the cylindrical casing lower end.During work, the water part that subordinate's impeller water outlet pumps is sucked by the import of higher level's impeller, the cylinder bottom of vertical multi-stage centrifugal pump is thrown on the top board of falling cylindrical casing after the cylindrical casing inwall is obstructed and continued to flow to along the outer wall of cylindrical casing to another part, the water that makes subordinate's impeller water outlet pump can't all enter higher level's impeller in.Therefore, adopt the vertical multi-stage centrifugal pump of this deflector, working efficiency is lower.
The model utility content
Problem to be solved in the utility model provides a kind of centrifugal pump deflector.Adopt this deflector, can improve the working efficiency of vertical multi-stage centrifugal pump.
For addressing the above problem, take following technological scheme:
Centrifugal pump deflector of the present utility model comprises cylindrical casing, and there is top board cylindrical casing upper end, has around the useful center hole of making water outlet on the top board, center hole to be used for the vertical boss that matches with the import of upper level impeller.The center height of top board is higher than its edge.Circumferentially be evenly equipped with the helical guide plate below the top board, base plate arranged below the helical guide plate, the upper and lower limit of described helical guide plate welds together respectively and between top board and base plate.Base plate diameter wherein is less than the diameter of cylindrical casing, and the cylindrical casing lower end protrudes under base plate, so that leave the spacing as water intake between the perpendicular wall of helical guide plate outer end and cylindrical casing.Its structural feature is that dash tube, this dash tube are arranged is up big and down small approximate circle conically shaped in described top board top, and its lower end diameter is greater than described vertical boss, is between the top board in its lower end and the vertical boss outside to seal shape and link together.When the water intake of upper level impeller placed on the described vertical boss, the upper end of dash tube was higher than the water outlet around the upper level impeller.
Take such scheme, have the following advantages:
By such scheme as can be seen, because the utility model is provided with the dash tube above top board, this dash tube is up big and down small approximate circle conically shaped, and its lower end diameter is the sealing shape between the top board in its lower end and the vertical boss outside and links together greater than described vertical boss.When the water intake of upper level impeller placed on the described vertical boss, the upper end of dash tube was higher than the water outlet around the upper level impeller.During work, the water that subordinate's impeller water outlet pumps all is blocked in the dash tube and is siphoned away by higher level's impeller by deflector very soon, and the water that makes subordinate's impeller water outlet pump can all enter in higher level's impeller.Thereby improved the working efficiency of vertical multi-stage centrifugal pump greatly.
Description of drawings
Fig. 1 is a centrifugal pump deflector schematic representation of the present utility model;
Fig. 2 is the schematic top plan view of Fig. 1;
Fig. 3 is the elevational schematic view of Fig. 1.
Embodiment
As Fig. 1, Fig. 2 and shown in Figure 3, centrifugal pump deflector of the present utility model comprises cylindrical casing 1, and top board 7 is arranged at cylindrical casing 1 top, and described top board 7 surroundings are along being processed into one all around with cylindrical casing 1 upper end.Be processed with center hole 5 on the top board 7, and the top board 7 around the center hole 5 highly is higher than the height at top board 7 edges as water outlet.Upwards dig around the center hole 5, be used for the vertical boss 4 that matches with the import of upper level impeller with formation.Circumferentially be evenly equipped with helical guide plate 6 below the top board 7, be provided with base plate 8 below the helical guide plate 6, the upper and lower limit of described helical guide plate 6 welds together respectively and between top board 7 lower surfaces and base plate 8 upper surfaces.Base plate 8 diameters wherein are less than the interior circular diameter of cylindrical casing 1, and cylindrical casing 1 lower end protrudes under base plate 8, so that leave the spacing 2 as water intake between the perpendicular wall of helical guide plate 6 outer ends and cylindrical casing 1.Described top board 7 tops are provided with dash tube 3, and this dash tube is up big and down small approximate circle conically shaped, and its lower end diameter is greater than described vertical boss 4, and 7 on the top board in its lower end and vertical boss 4 outsides is the sealing shape and welds together.When the water intake of upper level impeller placed on the described vertical boss 4, the upper end of dash tube 3 was higher than the water outlet around the upper level impeller.Wherein, dash tube 3 tops are arcuate segment for one section, and this arcuate segment is corresponding with upper level impeller water outlet all around.
During work, the water that subordinate's impeller water outlet pumps all is blocked in the dash tube 3 and is siphoned away by higher level's impeller by this deflector very soon, and the water that makes subordinate's impeller water outlet pump can all enter in higher level's impeller.
Claims (2)
1. the centrifugal pump deflector comprises cylindrical casing (1), and there is top board (7) cylindrical casing (1) upper end, and top board (7) is gone up the useful center hole (5) of making water outlet, and center hole (5) has all around and is used for the vertical boss (4) that matches with the import of upper level impeller; The center height of top board (7) is higher than its edge; Circumferentially be evenly equipped with helical guide plate (6) below the top board (7), base plate (8) arranged below the helical guide plate (6), the upper and lower limit of described helical guide plate (6) welds together respectively and between top board (7) and base plate (8); Base plate wherein (8) diameter is less than the diameter of cylindrical casing (1), and cylindrical casing (1) lower end protrudes under base plate (8), so that leave the spacing (2) as water intake between the perpendicular wall of helical guide plate (6) outer end and cylindrical casing (1); It is characterized in that it is up big and down small approximate circle conically shaped that there are dash tube (3), this dash tube in described top board (7) top, its lower end diameter is the sealing shape between the top board (7) in its lower end and vertical boss (4) outside and links together greater than described vertical boss (4); When the water intake of upper level impeller placed described vertical boss (4) to go up, the upper end of dash tube (3) was higher than the water outlet around the upper level impeller.
2. centrifugal pump deflector according to claim 1 is characterized in that dash tube (3) top is arcuate segment for one section, and this arcuate segment is corresponding with upper level impeller water outlet all around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201083728U CN202023768U (en) | 2011-04-09 | 2011-04-09 | Flow guiding mechanism for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201083728U CN202023768U (en) | 2011-04-09 | 2011-04-09 | Flow guiding mechanism for centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202023768U true CN202023768U (en) | 2011-11-02 |
Family
ID=44848719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201083728U Expired - Fee Related CN202023768U (en) | 2011-04-09 | 2011-04-09 | Flow guiding mechanism for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202023768U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128181A (en) * | 2011-04-09 | 2011-07-20 | 无锡太博泵业有限公司 | Centrifugal pump flow guiding mechanism |
-
2011
- 2011-04-09 CN CN2011201083728U patent/CN202023768U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128181A (en) * | 2011-04-09 | 2011-07-20 | 无锡太博泵业有限公司 | Centrifugal pump flow guiding mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20160409 |