CN201363304Y - Multi-stage micro-pressure labyrinth seal energy-saving pump - Google Patents
Multi-stage micro-pressure labyrinth seal energy-saving pump Download PDFInfo
- Publication number
- CN201363304Y CN201363304Y CNU2008201839362U CN200820183936U CN201363304Y CN 201363304 Y CN201363304 Y CN 201363304Y CN U2008201839362 U CNU2008201839362 U CN U2008201839362U CN 200820183936 U CN200820183936 U CN 200820183936U CN 201363304 Y CN201363304 Y CN 201363304Y
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- China
- Prior art keywords
- sealing
- impeller
- labyrinth seal
- pump
- water
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- Expired - Fee Related
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Abstract
The utility model relates to a multi-stage micro-pressure labyrinth seal energy-saving pump which reduces the internal leakage, improves the water pump efficiency and reduces the noise. The multi-stage micro-pressure labyrinth seal energy-saving pump reduces the internal leakage by using an impeller groove-shaped seal ring to seal the inside and the outside of the inlet of an impeller, cancels the pressure sealing water of a primary impeller, seals the shaft of a water outlet section with the returned water of a balance chamber and seals the shaft of a water inlet section with the returned water of a balance return water pipe, thereby reducing the internal leakage of the impeller, in particular to the primary impeller; and simultaneously, the shaft sealing adopts a double sealing technology, so that the friction couple of the shafts is smaller, the sealing effect is better, the water pump efficiency is improved, and the service life of the shaft sealing devices is longer. In addition, the multi-stage micro-pressure labyrinth seal energy-saving pump is also provided with an exhaust pipe on the top of the balance chamber which is communicated with the balance return water pipe, so that a multi-stage pump can thoroughly exhaust the air in the balance chamber when working. The technology can effectively reduce the noise of the pump.
Description
Affiliated technical field
The utility model relates to a kind of multi-stage, energy-saving water pump, especially plumbing pump.
Background technique
At present, the shaft sealing water of known GB single suction multistage centrifugal pump all by elementary impeller work done impulse to the shaft sealing chamber, such one is that elementary impeller has the leakage current loss, the 2nd, for the press water external leakage that prevents to enter in the shaft sealing chamber compresses sealing with filler again, this just makes the frictional resistance of packing sleeve increase, mechanical efficiency is lower, axle sleeve quick abrasion during water pump operation.In addition, the sealing of the impeller ring of the multistage water pump of known GB and impeller all is the sealing of yi word pattern annular space, this sealing internal leakage is big, the leakage current of high velocity jet and the drainage line vertical impact formation eddy current of water conservancy diversion in impeller inlet, and this has just increased the hydraulic loss at impeller inlet place.Next is; Owing to there is the air in certain amount can't eliminating meeting trigger noise in the balance cylinder, the part air of eliminating enters pump chamber by balance return pipe, pump intake again and again to the GB multistage pump again in when operation, and impeller can chronic cavitation erosion.
Summary of the invention
Existing with problems such as the internal leakage of GB multistage centrifugal pump are big in order to overcome, the utility model provides a kind of multistage minute-pressure labyrinth seal energy-saving pump.This multistage minute-pressure labyrinth seal energy-saving pump not only can improve pump efficiency, and can make seal life longer, rational in infrastructurely is easy to manufacturing.
The technological scheme that the utility model adopted is: on the multistage centrifugal pump sealing apparatus, comprise impeller sealing arrangement, shaft sealer, the shaft sealing water supply system, it is characterized in that: 1, connecting water intake on the inlet segment with the threeway one end coupling shaft sealing supply pipe the other end on the balance return pipe.2, impeller ring and impeller have adopted inside and outside grooved annular space sealing.3, the top, balance cylinder is provided with an outlet pipe and is communicated with return pipe with reducing tee.4, shaft sealer adopts oily inclusion and supply pipe double seal.5, the dash on shaft sealer sealing rotating ring has a flat section sealing surface, tapering compensating sealing surface, dash flange, and is provided with to regulate and ends unscrew and can put the slip setting at moving axis.
Pass through technique scheme: one, the wiper seal water and the device thereof of the elementary impeller of cancellation seal supply pipe with the threeway coupling shaft and connect shaft sealer on the inlet segment again on the balance return pipe.Utilize the minute-pressure water in the balance return pipe that the shaft sealer on the inlet segment is carried out the minute-pressure sealing.So not only reduced the particularly internal leakage of elementary impeller of impeller, the sealing of minute-pressure simultaneously makes the frictional couple of axle diminish the longer service life of shaft sealer when pump efficiency is improved.Two, take the inside and outside grooved labyrinth seal ring of impeller to external sealed in the import of impeller, avoid the leakage current of high velocity jet and water conservancy diversion to form eddy current loss in the drainage line vertical impact of impeller inlet.Three, an outlet pipe is set at the top, balance cylinder and is connected with the balance return pipe, multistage pump air in the balance cylinder when work can be drained, can reduce the noise of pump so effectively with reducing tee.Thereby make multistage pump reach that efficient height, noise are little, the purpose of shaft sealer long service life.
The beneficial effects of the utility model are: can reduce pump noise effectively when reducing the water pump internal leakage and raising the efficiency, can also make the shaft sealing longer service life.And it is simple in structure.
Description of drawings
Below in conjunction with drawings and Examples model utility is further specified.
Fig. 1 is multistage minute-pressure labyrinth seal energy-saving pump embodiment vertical section structure figure.
Fig. 2 is the impeller ring of multistage minute-pressure labyrinth seal energy-saving pump and the partial structurtes figure of impeller.
Fig. 3 is the balance backwater sealing pipeline schematic representation of multistage minute-pressure labyrinth seal energy-saving pump.
Fig. 4 is the dual axis sealing partial structurtes figure of multistage minute-pressure labyrinth seal energy-saving pump.
1 balance return pipe among the figure, 2 impellers, 3 grooved labyrinth seal rings, 4 outlet pipes, 5 oily inclusions, 6 dash sealing rotating ring, 7 bowls of type seal rings, 8 glands, 9 end a screw, 10 static seal O type circles, 11 mechanical lubricators, 12 inlet segments, 13 axle sleeves, 14 shaft sealing pipes, 15 stators, 16 stage casings, 17 water exit ends, 18 gimbals, 19 Balance discs, 20 tail-hoods, 21 bearing bracket, 22,23 impeller keys, the logical lid of 24 bearings, 25 bearings, 26 bearing caps, 27 bearing lock nutss, 28 stay-bolts, 29 axle sleeve gland nuts.
Embodiment
In the drawings before the assembling, earlier grooved labyrinth seal ring 3 is pressed in the hole in inlet segment 12 and stage casing 16 fixingly, again gimbal 18 is fixed by bolts on the water exit end 17.Then axle 22, axle sleeve gland nut 29, axle sleeve 13, inlet segment 12, impeller key 23, impeller 2, stator 15, stage casing 16, impeller key 23, impeller 2, stator 15 ... water exit end 17, Balance disc 19, axle sleeve 13, tail-hood 20 assembled in sequence back well compress with stay-bolt 28.Oily inclusion 5 (comprising that 6 dash sealing rotating ring, 7 bowls of type seal rings, 8 glands, 9 end a screw, 10 static seals, 0 type circle, 11 mechanical lubricators) with two ends is assemblied on inlet segment 12 and the tail-hood 20 at last, with axle sleeve 13 motive sealings.Again with bearings at both ends support 21, comprise that (24 bearings lead to lid, 25 bearings, 27 bearing lock nutss, 26 bearing caps) assembled in sequence is good.Adorning balance return pipe 1, shaft sealing pipe 14, outlet pipe 4 at last gets final product.
Claims (5)
1, a kind of multistage minute-pressure labyrinth seal energy-saving pump, on the multistage centrifugal pump sealing apparatus, comprise impeller sealing arrangement, shaft sealer, the shaft sealing water supply system, it is characterized in that: go up with threeway one end coupling shaft sealing supply pipe (14) the other end at balance return pipe (1) and connect water intake on the inlet segment (12).
2, multistage minute-pressure labyrinth seal energy-saving pump according to claim 1 is characterized in that: impeller ring (3) has adopted inside and outside grooved annular space sealing with impeller (2).
3, multistage minute-pressure labyrinth seal energy-saving pump according to claim 1 is characterized in that: the top, balance cylinder is provided with an outlet pipe (4) and is communicated with return pipe (1) with reducing tee.
4, multistage minute-pressure labyrinth seal energy-saving pump according to claim 1 is characterized in that: shaft sealer adopts oily inclusion (5) and supply pipe (14) double seal.
5, multistage minute-pressure labyrinth seal energy-saving pump according to claim 1, it is characterized in that: dash on shaft sealer sealing rotating ring (6) has a flat section sealing surface, tapering compensating sealing surface, dash flange, and is provided with to regulate and ends unscrew and can put the slip setting at moving axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201839362U CN201363304Y (en) | 2008-12-30 | 2008-12-30 | Multi-stage micro-pressure labyrinth seal energy-saving pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201839362U CN201363304Y (en) | 2008-12-30 | 2008-12-30 | Multi-stage micro-pressure labyrinth seal energy-saving pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201363304Y true CN201363304Y (en) | 2009-12-16 |
Family
ID=41473968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201839362U Expired - Fee Related CN201363304Y (en) | 2008-12-30 | 2008-12-30 | Multi-stage micro-pressure labyrinth seal energy-saving pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201363304Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338122A (en) * | 2011-09-02 | 2012-02-01 | 合肥华升泵阀有限责任公司 | Tangent pump |
-
2008
- 2008-12-30 CN CNU2008201839362U patent/CN201363304Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338122A (en) * | 2011-09-02 | 2012-02-01 | 合肥华升泵阀有限责任公司 | Tangent pump |
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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: 20091216 Termination date: 20101230 |