CN204716638U - Outer wash type self-balancing type centrifugal pump - Google Patents
Outer wash type self-balancing type centrifugal pump Download PDFInfo
- Publication number
- CN204716638U CN204716638U CN201520328991.6U CN201520328991U CN204716638U CN 204716638 U CN204716638 U CN 204716638U CN 201520328991 U CN201520328991 U CN 201520328991U CN 204716638 U CN204716638 U CN 204716638U
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- CN
- China
- Prior art keywords
- intermediate section
- pump shaft
- centrifugal pump
- flushing hole
- interstage bushing
- 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.)
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Abstract
The utility model discloses a kind of outer wash type self-balancing type centrifugal pump, comprise suction casing (5), stage casing (8), intermediate section (9), changeover portion (13), pump shaft (2), this pump shaft is equipped with mechanical sealing mechanism (3), gear mechanism, impeller (6), described intermediate section (9) is provided with the outer flushing hole (15) of intermediate section, the interstage bushing (10) between described intermediate section (9) and pump shaft (2) is provided with the outer flushing hole (17) of lining.The utility model utilizes high pressure washing to stop solid particle to enter interstage bushing between intermediate section and pump shaft and middle axle sleeve gap between the two, slow down the speed that solid particle weares and teares to both, thus frequently need not change interstage bushing and middle axle sleeve accessory, more need not often make centrifugal pump quit work for this reason, improve working efficiency.
Description
Technical field
The utility model relates to a kind of centrifugal pump, specifically relates to the self-balancing type centrifugal pump of a kind of conveying containing solid particle liquid.
Background technique
Self-balancing type centrifugal pump is a kind of multistage segmental centrifugal pump, and its suction casing, intermediate section, changeover portion, stage casing use rod and be connected; It adopts the method being arranged symmetrically with impeller to balance the axial force of pump shaft voluntarily, does not need to arrange balanced controls more in addition, is specially adapted to carry viscosity higher or the liquid medium containing a small amount of solid particle (or impurity).
But, self-balancing type centrifugal pump, when carrying the liquid medium containing more solid particle, because the both sides pressure reduction of its interstage bushing and middle axle sleeve is comparatively large, adds the impact of solid particle, quickly, often have more than is needed two or three months just must be changed for interstage bushing and the wearing and tearing of middle axle sleeve.Change accessory frequently not only to waste time and energy, and to cause thus be not only the expense of accessory, cause the loss of whole device manufacturing schedule to be unable to estimate especially owing to centrifugal pump must be made to quit work when frequently changing accessory.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and provides a kind of interstage bushing and middle axle sleeve to be difficult to the outer wash type self-balancing type centrifugal pump worn and torn, the uninterrupted operation time is long.
The purpose of this utility model realizes by following technical solution: outer wash type self-balancing type centrifugal pump, comprise suction casing, stage casing, intermediate section, changeover portion, pump shaft, this pump shaft is equipped with mechanical sealing mechanism, gear mechanism, impeller, described intermediate section is provided with the outer flushing hole of intermediate section, the interstage bushing between described intermediate section and pump shaft is provided with the outer flushing hole of lining.On described interstage bushing and outside described lining, the side edge of flushing hole is equipped with seal ring.
After adopting the present invention, utilize the outer washing solution of high pressure by flushing hole outside the outer flushing hole of intermediate section, lining to carrying out high pressure washing between intermediate section and pump shaft, solid particle is stoped to enter interstage bushing between intermediate section and pump shaft and middle axle sleeve gap between the two, slow down the speed that solid particle weares and teares to both, increase its working life, thus frequently need not change interstage bushing and middle axle sleeve accessory, more need not often make centrifugal pump quit work for this reason, improve working efficiency.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and mode of execution, the utility model is described in further detail.
Fig. 1 is the structural representation of intermediate section of the present utility model.
Fig. 2 is the structural representation of interstage bushing of the present utility model.
Fig. 3 is the structural representation of the outer wash type self-balancing type centrifugal pump of the utility model.
Embodiment
With reference to Fig. 1, Fig. 2 and Fig. 3, the outer wash type self-balancing type centrifugal pump of the utility model, comprise suction casing 5, stage casing 8, intermediate section 9, changeover portion 13 (using rod 12 to be connected), pump shaft 2, this pump shaft 2 is equipped with mechanical sealing mechanism 3 (and sealing letters 4), gear mechanism is (containing left bearing device 1, right bearing device 14), impeller 6 (and stator 7), described intermediate section 9 is provided with the outer flushing hole of intermediate section 15 (, to external outer washing solution), interstage bushing 10 between described intermediate section 9 and pump shaft 2 is provided with the outer flushing hole 17 (two) of lining.The outer flushing hole 15 of described intermediate section is communicated by passage with the outer flushing hole 17 of lining.
On described interstage bushing 10 and outside described lining, seal ring 16 (" O " shape is two pieces) is equipped with at side (dual-side) place of flushing hole 17, leaks toward between intermediate section 9 and interstage bushing 10 to prevent the outer washing solution of high pressure.
Utilize between the interstage bushing 10 of the outer washing solution of high pressure between intermediate section 9 and pump shaft 2 and middle axle sleeve 11 and form zone of high pressure, effectively stop the solid particle of fed sheet of a media to enter gap between interstage bushing 10 and middle axle sleeve 11.
Claims (2)
1. outer wash type self-balancing type centrifugal pump, comprise suction casing (5), stage casing (8), intermediate section (9), changeover portion (13), pump shaft (2), this pump shaft (2) is equipped with mechanical sealing mechanism (3), gear mechanism, impeller (6), it is characterized in that: on described intermediate section (9), be provided with the outer flushing hole (15) of intermediate section, the interstage bushing (10) between described intermediate section (9) and pump shaft (2) is provided with the outer flushing hole (17) of lining.
2. outer wash type self-balancing type centrifugal pump as claimed in claim 1, is characterized in that: on described interstage bushing (10) and outside described lining, the side edge of flushing hole (17) is equipped with seal ring (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520328991.6U CN204716638U (en) | 2015-05-18 | 2015-05-18 | Outer wash type self-balancing type centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520328991.6U CN204716638U (en) | 2015-05-18 | 2015-05-18 | Outer wash type self-balancing type centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204716638U true CN204716638U (en) | 2015-10-21 |
Family
ID=54315640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520328991.6U Active CN204716638U (en) | 2015-05-18 | 2015-05-18 | Outer wash type self-balancing type centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204716638U (en) |
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2015
- 2015-05-18 CN CN201520328991.6U patent/CN204716638U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |