CN202673761U - Water pump with two-way sealing device - Google Patents
Water pump with two-way sealing device Download PDFInfo
- Publication number
- CN202673761U CN202673761U CN 201220320333 CN201220320333U CN202673761U CN 202673761 U CN202673761 U CN 202673761U CN 201220320333 CN201220320333 CN 201220320333 CN 201220320333 U CN201220320333 U CN 201220320333U CN 202673761 U CN202673761 U CN 202673761U
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- CN
- China
- Prior art keywords
- seal ring
- sealing device
- suction port
- water pump
- impeller
- 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 - Lifetime
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Abstract
The utility model discloses a water pump with a two-way sealing device. The water pump comprises an impeller, a pump case and a sealing device arranged between the impeller and the pump case, wherein the sealing device consists of a radial sealing device and an axial sealing device. The water pump with the two-way sealing device has the advantages that the sealing effect is good, the axial position of a sealing ring can be adjusted, and the axial clearance can be controlled, thereby more effectively realizing the sealing property of the sealing device.
Description
Technical field
The utility model relates to a kind of water pump, particularly a kind of water pump with bilateral sealing device.
Background technique
During pump working, because liquid has obtained energy through impeller the time, so the pressure of the pressure ratio suction eye of impeller outlet place (being in the pump chamber) is high, because the effect of pressure difference, there is sub-fraction liquid to flow to low pressure area along the seal ring apparatus gap between pump case and the impeller from the zone of high pressure in the pump chamber, namely flow to suction eye from impeller outlet, participate in once again circulation in the pump, and in the process that overcomes seal ring apparatus gap resistance, energy is consumed, the loss of liquid that this part can't be used effectively, i.e. common alleged seal ring leakage rate.
The seal ring leakage rate is decided by seal ring structure and sealing ring gap size, and sealing ring gap is larger, and the leakage rate of liquid is also larger, and corresponding water pump volumetric efficiency is lower; Sealing ring gap is less, and the reducing-flow structure of device is more reasonable, and corresponding water pump volumetric efficiency is just higher.
The existing domestic and international water pump packing loop device that adopts all is the sealing of adopting single direction, or adopts radial seal, or adopts axial seal, these two kinds of sealing means, owing to only seal from one direction, so sealing effect is poor not good, still can not effectively overcome the seal ring leakage problem.
The model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of water pump with bilateral sealing device that the seal ring leakage rate is controlled in minimum state is provided.
A kind of water pump with bilateral sealing device, include impeller, pump case and be arranged at impeller and pump case between seal arrangement, its structure outline is: described seal arrangement includes apex combustion seal and axial sealer.
The impeller of water pump and the seal arrangement between the pump case are changed into radially and axially simultaneously sealing by single sealing, so just can greatly improve sealing between the two, thereby avoid as much as possible the generation of seal ring leakage rate.
Described seal arrangement is for adopting U-shaped seal ring to seal, and the inner side surface of U-shaped seal ring is radial sealing surfaces, and the end face of the inner bottom surface of U-shaped seal ring and the opening end of U-shaped seal ring is as axial seal face.
The end face that impeller cooperates with seal ring is arranged to the end face of scalariform, and the both ends of the surface that impeller becomes scalariform to distribute match with the inner bottom surface of U-shaped seal ring or the end face of opening end respectively.
The end face that impeller is cooperated with seal ring is arranged to the end face of scalariform, seal ring cooperates with impeller like this, can be the cooperating of that end face that is positioned at outlet end of selecting seal ring inner bottom surface and impeller scalariform end face according to actual needs, or cooperating of the end face of the end face of seal ring opening end and the close impeller inner end of impeller scalariform end face, thereby can realize the adjustment of the axial clearance between seal ring and the impeller.
The position that cooperates with seal ring at the suction port place of pump case is provided with the seal ring regulating tank more than 3 that distributes along the suction port inner peripheral surface, sealing ring regulating tank extending axially along the pump case suction port, and by suction port in be gradient and distribute, near the internal diameter of the regulating tank of suction port end less than the internal diameter away from the regulating tank of suction port end.
Suction port place at pump case arranges regulating tank, the axial position of conveniently adjusted like this seal ring.
Described regulating tank is symmetrical along the axis of suction port.
In sum, the utility model has following advantage compared to existing technology:
Water pump with bilateral sealing device of the present utility model has good sealing effect, and the axial position of seal ring can be adjusted, and can control the advantage of axial clearance, thus more effective realization seal arrangement sealability.
Description of drawings
Fig. 1 is the water pump structure schematic representation with bilateral sealing device of the present utility model.
Fig. 2 is the structural representation of impeller.
Fig. 3 is the structural representation of pump case.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the structural representation of seal ring.
Label declaration 1 impeller 11 scalariform end faces 2 pump cases 21 regulating tanks 3 seal arrangements 31 seal rings 32 radial sealing surfaces 33 axial seal faces.
Embodiment
Below in conjunction with embodiment the utility model is described in more detail.
Embodiment 1
A kind of water pump with bilateral sealing device as shown in Figure 1, include impeller 1, pump case 2 and be arranged at impeller and pump case between seal arrangement 3, described seal arrangement includes apex combustion seal and axial sealer.Described seal arrangement is for adopting U-shaped seal ring 31 as shown in Figure 5 to seal, and the inner side surface of U-shaped seal ring is radial sealing surfaces 32, and the end face of the inner bottom surface of U-shaped seal ring and the opening end of U-shaped seal ring is as axial seal face 33.The end face that impeller as shown in Figure 2 cooperates with seal ring is arranged to the end face 11 of scalariform, and the both ends of the surface that the scalariform of impeller distributes match with the inner bottom surface of U-shaped seal ring or the end face of opening end respectively.The position that cooperates with seal ring at the suction port place of as shown in Figure 3 pump case is provided with distribute along the suction port inner peripheral surface 3 along the symmetrical seal ring regulating tank 21 of the axis of suction port, sealing ring regulating tank extending axially along the pump case suction port, and by suction port in be gradient and distribute, near the internal diameter of the regulating tank of suction port end less than the internal diameter away from the regulating tank of suction port end.
It is same as the prior art that present embodiment is not stated part.
Claims (5)
1. water pump with bilateral sealing device, include impeller, pump case and be arranged at impeller and pump case between seal arrangement, its structure outline is: described seal arrangement includes apex combustion seal and axial sealer.
2. the water pump with bilateral sealing device according to claim 1, it is characterized in that: described seal arrangement is for adopting U-shaped seal ring to seal, the inner side surface of U-shaped seal ring is radial sealing surfaces, and the end face of the inner bottom surface of U-shaped seal ring and the opening end of U-shaped seal ring is as axial seal face.
3. the water pump with bilateral sealing device according to claim 2, it is characterized in that: the end face that impeller cooperates with seal ring is arranged to the end face of scalariform, and the both ends of the surface that impeller becomes scalariform to distribute match with the inner bottom surface of U-shaped seal ring or the end face of opening end respectively.
4. the water pump with bilateral sealing device according to claim 3, it is characterized in that: the position that cooperates with seal ring at the suction port place of pump case is provided with the seal ring regulating tank more than 3 that distributes along the suction port inner peripheral surface, sealing ring regulating tank extending axially along the pump case suction port, and by suction port in be gradient and distribute, near the internal diameter of the regulating tank of suction port end less than the internal diameter away from the regulating tank of suction port end.
5. the water pump with bilateral sealing device according to claim 4 is characterized in that: described regulating tank is for symmetrical along the axis of suction port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220320333 CN202673761U (en) | 2012-07-04 | 2012-07-04 | Water pump with two-way sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220320333 CN202673761U (en) | 2012-07-04 | 2012-07-04 | Water pump with two-way sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202673761U true CN202673761U (en) | 2013-01-16 |
Family
ID=47494668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220320333 Expired - Lifetime CN202673761U (en) | 2012-07-04 | 2012-07-04 | Water pump with two-way sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202673761U (en) |
-
2012
- 2012-07-04 CN CN 201220320333 patent/CN202673761U/en not_active Expired - Lifetime
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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: 20130116 |