CN203374532U - High-cavitation-resistant-performance horizontal multi-stage centrifugal pump - Google Patents
High-cavitation-resistant-performance horizontal multi-stage centrifugal pump Download PDFInfo
- Publication number
- CN203374532U CN203374532U CN201320385674.9U CN201320385674U CN203374532U CN 203374532 U CN203374532 U CN 203374532U CN 201320385674 U CN201320385674 U CN 201320385674U CN 203374532 U CN203374532 U CN 203374532U
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- stage
- impeller
- inducer
- bearing
- cavitation
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Abstract
A high-cavitation-resistant-performance horizontal multi-stage centrifugal pump comprises a stator part and a rotor part. The stator part comprises a water inlet section, an induction wheel middle section, a middle section, a guiding vane, a last-stage guiding vane, a flow guiding sealing ring, a water outlet section, a stuffing box, a balancing ring, a left bearing part and a right bearing part. The rotor part comprises a shaft, a first bearing locking nut, an induction wheel, a first-stage impeller, an impeller, an impeller blocking sleeve, a balancing disc blocking sleeve, a balancing disc, a shaft sleeve, a bearing blocking sleeve, a bearing and a second bearing locking nut. The rotor part is fixed through the bearing locking nuts are the two ends. The induction wheel which is matched with the first-stage impeller is arranged in front of the first-stage impeller. The induction wheel and the first-stage impeller are fixed on the shaft and are in connection transmission with the shaft through keys. The shaft is fixed to the first bearing locking nut and the second bearing locking nut which are close to the two ends. The flow guiding sealing ring is provided with a first-stage sealing ring function and is arranged on the outer side of the induction wheel. The two ends of the flow guiding sealing ring are fixed on the induction wheel middle section and the water inlet section respectively.
Description
Technical field
The utility model relates to a kind of multistage centrifugal pump, particularly a kind of a kind of high-cavitation-resistance energy horizontal multi-stage centrifugal pump of the medium that is applicable to conveying water, the chemical mediums such as mine, chemical industry, power plant or contains a small amount of solid particle.
Background technique
From the prior art, along with the scale of mine, power plant and chemical plant installations constantly enlarges, water pump is constantly towards large flow, high-lift future development, from design aspect, the design discharge of pump strengthens, inhaling journey will reduce, and problem of cavitation is the inevitable problem at first solved.In order to improve water pump suction lift, reducing cavitation occurs, adopt the first stage impeller of large import, but it is limited to put forward the high suction depth value, can not meet usage requirement, still there is cavitation phenomenons to occur, affect the working life of pump, adopt the double suction first stage impeller can carry high suction depth, but its structure is comparatively complicated, and maintenance is inconvenient.
The model utility content
The purpose of this utility model is to provide a kind of high-cavitation-resistance energy horizontal multi-stage centrifugal pump, it has the high-cavitation-resistance energy, there is lower necessary net positive suction head, can meet the requirement of the device net positive suction head that the user is lower, avoid the damage of cavitation phenomenons to pump, and the suction journey that has improved pump, and its compactness rational in infrastructure, simple, axial dimension is little, operates steadily, safe and reliable, and installation, maintenance is easy to detect quick.
For achieving the above object, a kind of high-cavitation-resistance energy of the utility model horizontal multi-stage centrifugal pump, comprise stator component and rotor part, stator component comprises inlet segment, the inducer stage casing, stage casing, stator, the final stage stator, the water conservancy diversion seal ring, water exit end, stuffing box, gimbal, the left bearing parts, the right bearing parts, wherein said inlet segment, the inducer stage casing, stage casing, stator, the final stage stator, the water conservancy diversion seal ring, water exit end is fixed by turnbuckle and nut, described left bearing parts and right bearing parts, stuffing box by double-screw bolt be bolted to inlet segment or water exit end on, rotor part comprises axle, clutch shaft bearing locknut, inducer, first stage impeller, impeller, impeller interstage sleeve, Balance disc interstage sleeve, Balance disc, axle sleeve, bearing interstage sleeve, bearing, the second bearing locking nut, and rotor part is fixed by clutch shaft bearing locknut and second bearing locking nut at two ends, is furnished with the described inducer be complementary with it before described first stage impeller, described inducer and described first stage impeller are fixed on axle and by key and axle connection for transmission, axially by two ends clutch shaft bearing locknut and the second bearing locking nut, fix, described water conservancy diversion seal ring has chopped-off head seal ring function and is arranged on the described inducer outside, and the two ends of described water conservancy diversion seal ring are separately fixed on described inducer stage casing and described inlet segment.
Further, described first stage impeller is the impeller of the anti-cavitation of increasing inlet-duct area.
Further, described inducer designs according to first stage impeller, and the 1.2-1.4 that its conveyance capacity is first stage impeller doubly.
Further, the profile of described inducer is cylindrical screw shape.
Further, the structure of described inducer is uniform pitch or variable pitch formula, has two or three blades.
Further, the suction side filler rinses to adopt in medium and rinses, its flushing medium enters by the flushing hole on the inducer stage casing cavity that described inducer stage casing, inlet segment and water conservancy diversion seal ring form, through the interior flushing hole on inlet segment, packing cavity is rinsed and lubricates again, when reducing the packing cavity temperature, prevent that air from entering pump chamber.
Adopt above-mentioned structure, due to the structure that adopts inducer, first stage impeller and water conservancy diversion seal ring to match, make pump there is the high-cavitation-resistance energy, lower necessary net positive suction head is arranged, can meet the requirement of the device net positive suction head that the user is lower, avoid the damage of cavitation phenomenons to pump, effectively extended the working life of pump.Some mines, chemical industry have been solved, the problem of the device pump cavitation that power plant etc. have relatively high expectations to cavitation performance.Have compactness rational in infrastructure, simple, axial dimension is little simultaneously, operate steadily, safe and reliable, and the installation, maintenance characteristics such as quick easy to detect.
The accompanying drawing explanation
The sectional view that Fig. 1 is the utility model high-cavitation-resistance energy horizontal multi-stage centrifugal pump.
Label declaration
Axle 1 clutch shaft bearing locknut 2
Left bearing parts 3 inducers 4
Inlet segment 5 water conservancy diversion seal rings 6
Inducer stage casing 7 first stage impellers 8
Stator 9 stage casings 10
Impeller 11 impeller interstage sleeves 12
Final stage stator 13 Balance disc interstage sleeves 14
Water exit end 15 gimbals 16
Balance disc 17 stuffing boxes 18
Right bearing parts 19 axle sleeves 20
Bearing interstage sleeve 21 bearings 22
The second bearing locking nut 23 nuts 24
Turnbuckle 25.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
The sectional view that Fig. 1 is high-cavitation-resistance energy horizontal multi-stage centrifugal pump of the present utility model, high-cavitation-resistance energy horizontal multi-stage centrifugal pump comprises stator component and rotor part.Stator component is comprised of component such as inlet segment 5, inducer stage casing 7, stage casing 10, stator 9, final stage stator 13, water conservancy diversion seal ring 6, water exit end 15, stuffing box 18, gimbal 16, left bearing parts 3, right bearing parts 19, inlet segment 5, inducer stage casing 7, stage casing 10, stator 9, final stage stator 13, water conservancy diversion seal ring 6, water exit end 15 are fixed by turnbuckle 25 and nut 24, left bearing parts 3 and right bearing parts 19, stuffing box 18 grades by double-screw bolt be bolted to inlet segment 5 or water exit end 15 on; Rotor part is comprised of component such as axle 1, bearing locking nut 2, inducer 4, first stage impeller 8, impeller 11, impeller interstage sleeve 12, Balance disc interstage sleeve 14, Balance disc 17, axle sleeve 20, bearing interstage sleeve 21, bearing 22, bearing locking nuts 23, and rotor part is fixed by the bearing locking nut 2 and 23 at two ends.
The first stage impeller 8 of high-cavitation-resistance energy horizontal multi-stage centrifugal pump is for strengthening the anti-cavitation design impeller of inlet-duct area, is furnished with the inducer 4 be complementary with it before first stage impeller 8, inducer 4 and first stage impeller 8 are fixed on pump shaft and, by key and axle 1 connection for transmission, axially fix by bearings at both ends nut 2; Inducer 4 outsides are provided with the water conservancy diversion seal ring 6 with chopped-off head seal ring function, and the two ends of water conservancy diversion seal ring 6 are separately fixed on inducer stage casing 7 and inlet segment 5.
The suction side filler rinses to adopt in medium and rinses, its flushing medium enters by the flushing hole on inducer stage casing 7 cavity that inducer stage casing 7, inlet segment 5 and water conservancy diversion seal ring 6 form, through the interior flushing hole on inlet segment 5, packing cavity is rinsed and lubricates again, when reducing the packing cavity temperature, prevent that air from entering pump chamber.
Inducer 4 is used in conjunction with first stage impeller 8, and the anti-cavitation performance of inducer 4 own is better, and produces certain pressure, reduces the net positive suction head of first stage impeller 8.Thereby greatly improve the anti-cavitation performance of pump, avoided the damage of cavitation phenomenons to pump, effectively extended the working life of pump.Some mines, chemical industry have been solved, the problem of the device pump cavitation that power plant etc. have relatively high expectations to cavitation performance.
Although most preferred embodiment of the present utility model has illustrated purposes, those skilled in the art can not break away from the scope of its specification and the spirit of model utility is carried out different modifications, supplements and substituted.And embodiment of the present utility model is for technological thought scope of the present utility model is described, rather than only only limit to embodiment of the present utility model.
Claims (6)
1. a high-cavitation-resistance energy horizontal multi-stage centrifugal pump, comprise stator component and rotor part, stator component comprises inlet segment, inducer stage casing, stage casing, stator, final stage stator, water conservancy diversion seal ring, water exit end, stuffing box, gimbal, left bearing parts, right bearing parts, wherein said inlet segment, inducer stage casing, stage casing, stator, final stage stator, water conservancy diversion seal ring, water exit end etc. are fixed by turnbuckle and nut, described left bearing parts and right bearing parts, stuffing box by double-screw bolt be bolted to inlet segment or water exit end on, rotor part comprises axle, the clutch shaft bearing locknut, inducer, first stage impeller, impeller, the impeller interstage sleeve, the Balance disc interstage sleeve, Balance disc, axle sleeve, the bearing interstage sleeve, bearing, the second bearing locking nut, rotor part is fixed by clutch shaft bearing locknut and second bearing locking nut at two ends, it is characterized in that: be furnished with the described inducer be complementary with it before described first stage impeller, described inducer and described first stage impeller are fixed on axle and by key and axle connection for transmission, axially by clutch shaft bearing locknut and second bearing locking nut at two ends, fix, described water conservancy diversion seal ring has chopped-off head seal ring function and is arranged on the described inducer outside, the two ends of described water conservancy diversion seal ring are separately fixed on described inducer stage casing and described inlet segment.
2. high-cavitation-resistance energy horizontal multi-stage centrifugal pump as claimed in claim 1, is characterized in that: the impeller of the anti-cavitation that described first stage impeller is the increasing inlet-duct area.
3. high-cavitation-resistance energy horizontal multi-stage centrifugal pump as claimed in claim 2, it is characterized in that: described inducer designs according to the first stage impeller performance, and the 1.2-1.4 that its conveyance capacity is first stage impeller is doubly.
4. high-cavitation-resistance energy horizontal multi-stage centrifugal pump as claimed in claim 2, it is characterized in that: the profile of described inducer is cylindrical screw shape.
5. high-cavitation-resistance energy horizontal multi-stage centrifugal pump as claimed in claim 2, it is characterized in that: the structure of described inducer is uniform pitch or variable pitch type, has two or three blades.
6. high-cavitation-resistance energy horizontal multi-stage centrifugal pump as claimed in claim 1, it is characterized in that: the suction side filler rinses to adopt in medium and rinses, its flushing medium enters by the flushing hole on the inducer stage casing cavity that described inducer stage casing, inlet segment and water conservancy diversion seal ring form, through the interior flushing hole on inlet segment, packing cavity is rinsed and lubricates again, when reducing the packing cavity temperature, prevent that air from entering pump chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320385674.9U CN203374532U (en) | 2013-06-27 | 2013-07-01 | High-cavitation-resistant-performance horizontal multi-stage centrifugal pump |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320375008 | 2013-06-27 | ||
| CN201320375008.7 | 2013-06-27 | ||
| CN201320385674.9U CN203374532U (en) | 2013-06-27 | 2013-07-01 | High-cavitation-resistant-performance horizontal multi-stage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374532U true CN203374532U (en) | 2014-01-01 |
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ID=49837062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320385674.9U Expired - Lifetime CN203374532U (en) | 2013-06-27 | 2013-07-01 | High-cavitation-resistant-performance horizontal multi-stage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374532U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352876A (en) * | 2013-06-27 | 2013-10-16 | 上海第一水泵厂有限公司 | Horizontal multi-stage centrifugal pump with high cavitation resistance |
| CN111980930A (en) * | 2020-08-10 | 2020-11-24 | 大连双龙泵业制造有限公司 | Novel inducer segment guide vane type multistage centrifugal pump |
-
2013
- 2013-07-01 CN CN201320385674.9U patent/CN203374532U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352876A (en) * | 2013-06-27 | 2013-10-16 | 上海第一水泵厂有限公司 | Horizontal multi-stage centrifugal pump with high cavitation resistance |
| CN111980930A (en) * | 2020-08-10 | 2020-11-24 | 大连双龙泵业制造有限公司 | Novel inducer segment guide vane type multistage centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |