CN204716594U - The abrasion resistant type intermediate section seal arrangement of self-balancing centrifugal pump - Google Patents
The abrasion resistant type intermediate section seal arrangement of self-balancing centrifugal pump Download PDFInfo
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- CN204716594U CN204716594U CN201520328995.4U CN201520328995U CN204716594U CN 204716594 U CN204716594 U CN 204716594U CN 201520328995 U CN201520328995 U CN 201520328995U CN 204716594 U CN204716594 U CN 204716594U
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- Prior art keywords
- intermediate section
- centrifugal pump
- interstage bushing
- self
- axle sleeve
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Abstract
The utility model discloses a kind of abrasion resistant type intermediate section seal arrangement of self-balancing centrifugal pump, comprise intermediate section (9), pump shaft (2), interstage bushing (10), middle axle sleeve (11) is provided with between this intermediate section (9) and pump shaft (2), described intermediate section (9) is provided with the outer flushing hole (15) of intermediate section, described interstage bushing (10) 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 centrifugal pump of a kind of conveying containing solid particle liquid.
Background technique
Self-balancing 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, the intermediate section seal arrangement of self-balancing centrifugal pump is when carrying the liquid medium containing more solid particle, because the both sides pressure reduction of its interstage bushing and middle axle sleeve is larger, add the impact that solid particle enters, 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 the abrasion resistant type intermediate section seal arrangement of the self-balancing centrifugal pump that a kind of interstage bushing and middle axle sleeve are difficult to wearing and tearing, the uninterrupted operation time is grown.
The purpose of this utility model realizes by following technical solution: the abrasion resistant type intermediate section seal arrangement of self-balancing centrifugal pump, comprise intermediate section, pump shaft, interstage bushing, middle axle sleeve is provided with between this intermediate section and pump shaft, described intermediate section is provided with the outer flushing hole of intermediate section, described interstage bushing is provided with the outer flushing hole of lining.
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 installation application structure schematic diagram of the present utility model.
Embodiment
With reference to Fig. 1, Fig. 2 and Fig. 3, the abrasion resistant type intermediate section seal arrangement of the utility model self-balancing centrifugal pump, comprise intermediate section 9, pump shaft 2, between this intermediate section 9 and pump shaft 2 (successively) be provided with interstage bushing 10, middle axle sleeve 11, described intermediate section 9 is provided with the outer flushing hole of intermediate section 15 (, to external outer washing solution), described interstage bushing 10 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.The utility model the self-balancing centrifugal pump of application is installed, also comprise suction casing 5, stage casing 8, 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 (containing left bearing device 1, right bearing device 14), impeller 6 (and stator 7).
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. the abrasion resistant type intermediate section seal arrangement of self-balancing centrifugal pump, comprise intermediate section (9), pump shaft (2), interstage bushing (10), middle axle sleeve (11) is provided with between this intermediate section (9) and pump shaft (2), it is characterized in that: on described intermediate section (9), be provided with the outer flushing hole (15) of intermediate section, described interstage bushing (10) is provided with the outer flushing hole (17) of lining.
2. the abrasion resistant type intermediate section seal arrangement of self-balancing 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 |
|---|---|---|---|
| CN201520328995.4U CN204716594U (en) | 2015-05-18 | 2015-05-18 | The abrasion resistant type intermediate section seal arrangement of self-balancing centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520328995.4U CN204716594U (en) | 2015-05-18 | 2015-05-18 | The abrasion resistant type intermediate section seal arrangement of self-balancing centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204716594U true CN204716594U (en) | 2015-10-21 |
Family
ID=54315596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520328995.4U Active CN204716594U (en) | 2015-05-18 | 2015-05-18 | The abrasion resistant type intermediate section seal arrangement of self-balancing centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204716594U (en) |
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2015
- 2015-05-18 CN CN201520328995.4U patent/CN204716594U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |