CN201322004Y - Shutdown sealing device in dynamic sealing type self-priming pump - Google Patents
Shutdown sealing device in dynamic sealing type self-priming pump Download PDFInfo
- Publication number
- CN201322004Y CN201322004Y CNU200820155489XU CN200820155489U CN201322004Y CN 201322004 Y CN201322004 Y CN 201322004Y CN U200820155489X U CNU200820155489X U CN U200820155489XU CN 200820155489 U CN200820155489 U CN 200820155489U CN 201322004 Y CN201322004 Y CN 201322004Y
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- CN
- China
- Prior art keywords
- pump
- shutdown
- pump cover
- type self
- cover
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a shutdown sealing device in a dynamic sealing type self-priming pump. The shutdown sealing device comprises a pump cover (6) and a pump shaft (7) which penetrates the pump cover (6); a static ring (32) is arranged on the pump cover (6) through a bolt (33) in a position near to the pump shaft (7), a sealing pad (31) is arranged between the pump cover (6) and the static ring (32); a moving ring (34) is arranged on the pump shaft (7) in a position near to the pump cover (6), and the moving ring (34) is fixed on the pump shaft (7) through a set screw (35) to rotate along with the pump. The shutdown sealing device in a dynamic sealing type self-priming pump has the advantage that the shutdown sealing device fundamentally solves the problem that a large amount of liquid goes out from a gap between the pump shaft and the pump cover when in shutdown of the pump due to the damage of a pump outlet check valve, thereby damaging a motor.
Description
Technical field
The utility model relates to a kind of self-priming pump, relates in particular to the shutdown seal arrangement in this self-priming pump.
Background technique
Seal arrangement does not have friction in the dynamic seal type self-priming pump running, it has high suction depth, low noise, advantage such as non-maintaining, can replace Under Water Pumps, major axis pump etc. under certain condition and carry the low level medium, be widely used in industries such as oil, chemical industry, metallurgy, electric power, iron and steel.
As seen from Figure 1: dynamic seal type self-priming pump working principle is by motor 8 transmission pump shafts 7 impeller 2 high speed rotating, make the liquid that is stored in the pump housing 1 under impeller 2 action of centrifugal force, liquid passes through the exhaust port that interlobate runner is discharged to stator 3 by the suction port of the pump housing 1, realizes motor 1 mechanical energy is converted to the purpose of liquid energy (kinetic energy, pressure energy, potential energy); Simultaneously sub-propeller 5 is also along with pump shaft 7 high speed rotating, with sealing case 4 and the pump cover 6 common dynamic sealing devices of forming, the pressure that the balance impeller produces, prevents from that high pressure water from scurrying out from the pump shaft 7 and the gap location of pump cover 6 to damage motor 8.
As seen from Figure 2: there is following point in this structure: dynamic sealing device only just works under the situation of pump work, as exports back valve and damage, and damages motor 8 thereby will have big quantity of fluid to scurry out from the pump shaft 7 and the gap location of pump cover 6 during termination of pumping.
Summary of the invention
The utility model technical issues that need to address have provided the shutdown seal arrangement in a kind of dynamic seal type self-priming pump, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: pump cover and the pump shaft that passes pump cover central authorities; On described pump cover, nearly pump shaft place settles a stationary ring by bolt, is mounted with a sealing gasket between pump cover and stationary ring; On described pump shaft, nearly pump cover place is mounted with a rotating ring, rotating ring is fixed on the pump shaft by Cock screw and rotates with pump.
Compared with prior art, the beneficial effects of the utility model are: fundamentally solved because of pump discharge returns valve and damaged, thereby big quantity of fluid will have been arranged from the scurry out problem of damage motor of the gap location of pump shaft and pump cover during termination of pumping.
Description of drawings
Fig. 1 is the structural representation of prior art medium power sealed type self-priming pump.
Fig. 2 is an A place structure for amplifying schematic representation among Fig. 1.
Fig. 3 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As seen from Figure 3: the utility model comprises: pump cover 6 and the pump shaft 7 that passes pump cover 6 central authorities; On described pump cover 6, nearly pump shaft 7 places settle a stationary ring 32 by bolt 33, are mounted with a sealing gasket 31 between pump cover 6 and stationary ring 32; On described pump shaft 7, nearly pump cover 6 places are mounted with a rotating ring 34, rotating ring 34 is fixed on the pump shaft 7 by Cock screw 35 and rotates with pump;
Described rotating ring 34 radially 32 gapped with stationary ring, axially and sealing gasket 31 also gapped.
Pump cover, stationary ring, sealing gasket, pump shaft and rotating ring form and shut down seal arrangement in the utility model, and because of the sub-propeller inlet pressure is lower, sealing gasket is down inhaled in the pump work process, has avoided sealing gasket to rub mutually with rotating ring; During termination of pumping, sealing gasket is upwards fitted with the rotating ring lower end surface under hydraulic action, plays the static seal effect, prevents that water breakthrough from going out to damage motor.
The utility model is simple, reliable, has guaranteed the proper functioning of dynamic seal type self-priming pump and the reliable sealing when shutting down.
Claims (2)
1. the shutdown seal arrangement in the dynamic seal type self-priming pump comprises: pump cover (6) and the pump shaft (7) that passes pump cover (6) central authorities; It is characterized in that: locate to settle a stationary ring (32) at last, the nearly pump shaft (7) of described pump cover (6), between pump cover (6) and stationary ring (32), be mounted with a sealing gasket (31) by bolt (33); Locate to be mounted with a rotating ring (34) at last, the nearly pump cover (6) of described pump shaft (7), rotating ring (34) is fixed on pump shaft (7) by Cock screw (35) and upward rotates with pump.
2. the shutdown seal arrangement in the dynamic seal type self-priming pump according to claim 1 is characterized in that: described rotating ring (34) radially gapped with stationary ring (32), axially and sealing gasket (31) also gapped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820155489XU CN201322004Y (en) | 2008-11-18 | 2008-11-18 | Shutdown sealing device in dynamic sealing type self-priming pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820155489XU CN201322004Y (en) | 2008-11-18 | 2008-11-18 | Shutdown sealing device in dynamic sealing type self-priming pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201322004Y true CN201322004Y (en) | 2009-10-07 |
Family
ID=41159388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820155489XU Expired - Fee Related CN201322004Y (en) | 2008-11-18 | 2008-11-18 | Shutdown sealing device in dynamic sealing type self-priming pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201322004Y (en) |
-
2008
- 2008-11-18 CN CNU200820155489XU patent/CN201322004Y/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20111118 |