CN203783903U - Improved centrifugal pump with cutting device - Google Patents
Improved centrifugal pump with cutting device Download PDFInfo
- Publication number
- CN203783903U CN203783903U CN201420114830.2U CN201420114830U CN203783903U CN 203783903 U CN203783903 U CN 203783903U CN 201420114830 U CN201420114830 U CN 201420114830U CN 203783903 U CN203783903 U CN 203783903U
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- CN
- China
- Prior art keywords
- centrifugal pump
- cone boss
- cutting device
- wheel hub
- cylindrical body
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- Expired - Fee Related
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Abstract
The utility model discloses an improved centrifugal pump with a cutting device. The improved centrifugal pump comprises a pump body, a centrifugal pump hub, an impeller and a rectangular cutting knives, wherein the centrifugal pump hub, the impeller and the rectangular cutting knives are mounted inside the pump body, and the back end of the centrifugal pump hub is connected with a cylinder; the centrifugal pump hub is composed of a cone boss; the front end of the cone boss adopts a bullet-shaped structure; four rectangular cutting knives are symmetrically arranged on the cone boss; the rectangular cutting knives and the cone boss are integrally cast; the centrifugal pump hub and the cylinder are integrally cast, a spiral water suction groove is formed in the outer circular surface of the cylinder, and an opening in threaded connection with a pump shaft is arranged in the middle of the cylinder. The improved centrifugal pump with the cutting device disclosed by the utility model has the advantages of reducing and attenuating the impact force of fluid and improving the extraction efficiency.
Description
Technical field
The utility model relates to a kind of centrifugal pump, is specifically related to a kind of improved band cutting device centrifugal pump.
Background technique
Centrifugal pump is mainly by centrifugal force, and a part of kinetic energy of the fluid that enters pump case is transformed into static energy, reduces rate of flow of fluid, and high pressure is discharged; But while use due to centrifugal pump, inlet is easily caused rotor failure by the winding of the foreign material such as pasture and water, rotten branch and solid particle suction, easily causes water pump to stop up simultaneously, reduces extraction efficiency; Chinese Patent Application No. (201110375471.7) discloses a kind of centrifugal pump with cutting device; At centrifugal pump impeller leading portion, triple cutting devices are installed.First being the S type slitting wheel of inlet, is then the taper-cut limit with sharp cutter, is finally cutting impeller and corresponding fixed cutting tool.Cutting edge shape on cutting impeller adopts sawtooth pattern, and cutting impeller and S type slitting wheel and main impeller all rotate with pump shaft, and fixed cutting tool and taper-cut limit are fixed on cutting impeller front end.
Although above-mentioned technology can solve water pump blockage problem to a great extent, owing to adopting triple cutting devices to have very large resistance to import current by feeler block, reduce the working efficiency of centrifugal pump; The restriction that centrifugal pump wheel hub also can be certain to import current simultaneously.
Model utility content
For addressing the above problem, the utility model object is in a kind of improved band cutting device centrifugal pump that reduces dampening fluid impact force, improves extraction efficiency is provided.
For achieving the above object, the technological scheme that the utility model adopts is: a kind of improved band cutting device centrifugal pump, comprises the pump housing, centrifugal pump wheel hub, impeller and rectangle cutting cutter composition; Described centrifugal pump wheel hub, impeller and rectangle cutting cutter are arranged in the pump housing, and described centrifugal pump wheel hub rear end is connected with cylindrical body; Described centrifugal pump wheel hub is made up of cone boss; Cone boss front end is bullet-shaped structure; In described cone boss, it is hollow shape; On described cone boss, be symmetrical arranged 4 rectangle cutting cuttves; The direction of the cutting edge of rectangle cutting cutter is consistent with vane rotary direction, and is 15 ° with center of circle radial angle; Described rectangle cutting cutter and cone boss integrally casting; Described centrifugal pump wheel hub and cylindrical body integrally casting, cylindrical body outer round surface is set to spirality pick trough, and helix is the cylindrical helix that waits; Described cylindrical body lower end is provided with dynamic balance weight region, and described dynamic balance weight region one side is provided with counterbore; In the middle of cylindrical body, be provided with and pump shaft helical connection mouth.
Further, the edge length of 4 described rectangle cutting cuttves is respectively 25mm, 18mm, 12mm and 5mm; Height is parallel with bullet-shaped bus is 5mm, and thickness is 5mm.
Further, the pitch of described spirality pick trough is 2mm, and the spiral degree of depth is 2mm.
Further, described counterbore is shape of threads; And be movably set with counterweight pad and bolt.
Beneficial effect:
Compared with prior art, improved band cutting device centrifugal pump of the present utility model, although have the resistance that import current is existed to a bit, the design that is bullet-shaped structure by selection and the cone boss front end of edge length, right
import resistance to water-flow has dropped tolow; Cylindrical body inside is set to hollow shape, has realized pump housing lightweight processing; Surface is set to spirality pick trough, residue can be difficult for to fine particle broken, indissoluble and get rid of from spirality pick trough, avoids working angles and Pump Suction Nozzle clamping stagnation; Cone boss can reduce the loss of fluid impact power.
Brief description of the drawings
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of the utility model centrifugal pump wheel hub.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
The improved band cutting device of one of the present utility model centrifugal pump, comprises that the pump housing 1, centrifugal pump wheel hub, impeller and rectangle cutting cutter 3 form; Described centrifugal pump wheel hub, impeller (not shown) and rectangle cutting cutter 3 are arranged in the pump housing 1, and described centrifugal pump wheel hub rear end is connected with cylindrical body 4; Described centrifugal pump wheel hub is made up of cone boss 2; Cone boss 2 front ends are bullet-shaped structure, and convection cell play the guiding role, and improve the loss of fluid frontal impact; In described cone boss 2, it is hollow shape 8; On described cone boss 2, be symmetrical arranged 1 rectangle cutting cutter 3; The direction of the cutting edge of rectangle cutting cutter 3 is consistent with vane rotary direction, and is 15 ° with center of circle radial angle; Described rectangle cutting cutter 3 and cone boss 2 integrally castings; Bowlder outside gold machining, cutting edge self-assembling formation, without special processing; Described centrifugal pump wheel hub and cylindrical body 4 integrally castings, cylindrical body 4 outer round surface are set to spirality pick trough 5, and helix is the cylindrical helix that waits; Described cylindrical body 4 lower ends are provided with dynamic balance weight region 6, and described dynamic balance weight region 6 one sides are provided with counterbore 7, and imbalance place is mended and weighed, and mend heavy pad bolton; In the middle of cylindrical body 4, be provided with and pump shaft helical connection mouth 9, attaching is unpicked and washed convenient.
Can obtain according to experiment, the edge length of 4 described rectangle cutting cuttves 3 is respectively 25mm, 18mm, 12mm and 5mm, in fully cutting, can reduce convection cell acting, reduces air horsepower, improves the efficiency of pump; Height is parallel with bullet-shaped bus be 5mm, and thickness is 5mm, and while being conducive to the work of rectangle cutter, whole blade is stressed evenly, and minimizing is due to unbalance stress, the vibration causing.Improve the life-span of whole rotor; The pitch of described spirality pick trough 5 is 2mm, and the spiral degree of depth is 2mm; Described counterbore is shape of threads; And be movably set with counterweight pad and bolt.
Lower list is under identical water condition, the centrifugal pump that centrifugal pump with cutting device, cutter piece direction are not parallel with major axes orientation and four cutter piece sizes are identical and the laboratory data of centrifugal pump of the present utility model.
Data shown in upper list one are the centrifugal pump with cutting device not, and data two be arranged in parallel with major axes orientation and four identical centrifugal pumps of cutter piece size for cutter piece direction, and data three are centrifugal pump of the present utility model.
According to upper list data analysis, the centrifugal pump (data three) of belt cutter AL-02 device, compared with the conventional centrifugal pump with cutting device (data one) not, the in the situation that of equal flow, the slightly high 0.1-0.2 rice of lift, efficiency and routine be not compared with the centrifugal pump with cutting device, high by 1% in lower-capacity point efficiency, large-capacity point, efficiency is high by 2%; The centrifugal pump (data three) of belt cutter AL-02 device, compared with the centrifugal pump (data two) of belt cutter AL-01 device, the in the situation that of equal flow, lift changes little, the high 1-2% of efficiency.
Embodiment recited above is described preferred implementation of the present utility model, not design of the present utility model and scope is limited.Do not departing under the prerequisite of the utility model design concept; various modification and improvement that related domain ordinary person makes the technical solution of the utility model; all should drop into protection domain of the present utility model; the technology contents of the utility model request protection, has all been documented in claims.
Claims (4)
1. an improved band cutting device centrifugal pump, comprises the pump housing, centrifugal pump wheel hub, impeller and rectangle cutting cutter composition; Described centrifugal pump wheel hub, impeller and rectangle cutting cutter are arranged in the pump housing, and described centrifugal pump wheel hub rear end is connected with cylindrical body; It is characterized in that: described centrifugal pump wheel hub is made up of cone boss; Cone boss front end is bullet-shaped structure; In described cone boss, it is hollow shape; On described cone boss, be symmetrical arranged 1 rectangle cutting cutter; The direction of the cutting edge of rectangle cutting cutter is consistent with vane rotary direction, and is 15 ° with center of circle radial angle; Described rectangle cutting cutter and cone boss integrally casting; Described centrifugal pump wheel hub and cylindrical body integrally casting, cylindrical body outer round surface is set to spirality pick trough, and helix is the cylindrical helix that waits; Described cylindrical body lower end is provided with dynamic balance weight region, and described dynamic balance weight region one side is provided with counterbore; In the middle of cylindrical body, be provided with and pump shaft helical connection mouth.
2. improved band cutting device centrifugal pump according to claim 1, is characterized in that: the edge length of 4 described rectangle cutting cuttves is respectively 25mm, 18mm, 12mm and 5mm; Height is parallel with bullet-shaped bus is 5mm, and thickness is 5mm.
3. improved band cutting device centrifugal pump according to claim 1, is characterized in that: the pitch of described spirality pick trough is 2mm, and the spiral degree of depth is 2mm.
4. improved band cutting device centrifugal pump according to claim 1, is characterized in that: described counterbore is shape of threads; And be movably set with counterweight pad and bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420114830.2U CN203783903U (en) | 2014-03-11 | 2014-03-11 | Improved centrifugal pump with cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420114830.2U CN203783903U (en) | 2014-03-11 | 2014-03-11 | Improved centrifugal pump with cutting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203783903U true CN203783903U (en) | 2014-08-20 |
Family
ID=51320096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420114830.2U Expired - Fee Related CN203783903U (en) | 2014-03-11 | 2014-03-11 | Improved centrifugal pump with cutting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203783903U (en) |
-
2014
- 2014-03-11 CN CN201420114830.2U patent/CN203783903U/en not_active Expired - Fee Related
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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: 20140820 Termination date: 20210311 |