CN203430843U - Three-stage sealed type special coal-washing pump - Google Patents
Three-stage sealed type special coal-washing pump Download PDFInfo
- Publication number
- CN203430843U CN203430843U CN201320353208.2U CN201320353208U CN203430843U CN 203430843 U CN203430843 U CN 203430843U CN 201320353208 U CN201320353208 U CN 201320353208U CN 203430843 U CN203430843 U CN 203430843U
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- China
- Prior art keywords
- pump
- impeller
- sealed type
- sub
- pump shaft
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- 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
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Abstract
The utility model discloses a three-stage sealed type special coal-washing pump which comprises a pump body, a pump shaft in the pump body, an impeller fixedly mounted at the front end of the pump shaft, a liquid inlet and a liquid outlet on the pump body, back vanes on the back of the impeller, and an auxiliary impeller on the pump shaft behind the impeller. The auxiliary impeller is positioned in an auxiliary impeller chamber in the pump body, the rear end of the auxiliary impeller chamber is enclosed to form a tapered cavity, and an integrated mechanical seal is installed in the cavity. The three-stage sealed type special coal-washing pump in such a structure employs three-stage seal of back vanes, an auxiliary impeller and a mechanical seal, substantially improves the seal performance, prevents medium leakage and prolongs the service lifetime.
Description
Technical field
The utility model relates to a kind of dedicated pump for coal washing operation.
Background technique
coal washing is an indispensable operation of coal deep processing, from mine directly coal out of exploitation in raw coal, raw coal has been sneaked into much impurity in recovery process, and the quality of coal is also different, and fixed ash coal little and that fixed ash is large is mixed in together.Coal washing is exactly that the impurity in raw coal is rejected, or fat coal and low-grade coal are carried out to a kind of industrial technology disaggregatedly.Because coal washing process medium contains a large amount of impurity, existing pump, because sealing is not in place, reveals medium, affects the life-span of pump.
Model utility content
For the technical problem of above-mentioned existence, the utility model provides a kind of three grades of sealed type coal washing dedicated pumps, is provided with three grades of sealings, effectively prevents medium leakage.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A grade sealed type coal washing dedicated pump, comprises the pump shaft in the pump housing, the pump housing; Pump shaft front end is installed with impeller; On the pump housing, be provided with liquid entering hole and liquid outlet; The described impeller back side is provided with back blade; On pump shaft, after impeller, be provided with sub-propeller, described sub-propeller is arranged in the sub-propeller chamber of the pump housing; Rear end, described sub-propeller chamber surrounds the cavity of taper, and integrated mechanical sealing is installed in cavity.
As a kind of improvement, described integrated mechanical sealing comprises axle sleeve on fixing pump shaft, be fixed on rotating ring on axle sleeve, be fixed on the stationary ring on sealing seat; Described rotating ring and stationary ring fitted seal; Stationary ring rear end is also provided with the spring for compensatory pressure.
Usefulness of the present utility model is:
The coal washing dedicated pump with said structure, is provided with back blade, sub-propeller, three grades of sealings of mechanical seal, has greatly increased its sealability, avoids medium to reveal, and has improved working life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of integrated mechanical sealing.
Mark in figure: 1 pump housing, 2 pump shafts, 3 impellers, 4 liquid entering holes, 5 liquid outlets, 6 sub-propellers, 7 back blades, 8 sub-propeller chambers, 9 integrated mechanical sealings, 10 axle sleeves, 11 rotating rings, 12 stationary rings, 13 springs, 14 sealing seats.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1-2:
The utility model comprises the pump shaft 2 in the pump housing 1, the pump housing 1; Pump shaft 2 front ends are installed with impeller 3; On the pump housing 1, be provided with liquid entering hole 4 and liquid outlet 5; Described impeller 3 back sides are provided with back blade 7; On pump shaft 2, after impeller 3, be provided with sub-propeller 6, described sub-propeller 6 is arranged in the sub-propeller chamber 8 of the pump housing 1; 8 rear ends, described sub-propeller chamber surround the cavity of taper, and integrated mechanical sealing 9 is installed in cavity.Described integrated mechanical sealing 9 comprises axle sleeve 10 on fixing pump shaft 2, be fixed on rotating ring 11 on axle sleeve 10, be fixed on the stationary ring 12 on sealing seat 14; Described rotating ring 11 and stationary ring 12 fitted seal; Stationary ring 12 rear ends are also provided with the spring 13 for compensatory pressure.
8 rear ends, sub-propeller chamber surround the cavity of taper; make integrated mechanical sealing 9 in spacious cavity; under back blade 7 and sub-propeller 8 effects; medium forms from flow field in conical cavity; realize from rinsing; the heat producing on friction pair can also be taken away rapidly, avoid solid particle or crystalline solid gathering on rotating ring 11, stationary ring 12 in medium, thereby reduce wear simultaneously.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
1. three grades of sealed type coal washing dedicated pumps, comprise the pump shaft in the pump housing, the pump housing; Pump shaft front end is installed with impeller; On the pump housing, be provided with liquid entering hole and liquid outlet, it is characterized in that: the described impeller back side is provided with back blade; On pump shaft, after impeller, be provided with sub-propeller, described sub-propeller is arranged in the sub-propeller chamber of the pump housing; Rear end, described sub-propeller chamber surrounds the cavity of taper, and integrated mechanical sealing is installed in cavity.
2. a kind of three grades of sealed type coal washing dedicated pumps according to claim 1, is characterized in that: described integrated mechanical sealing comprises axle sleeve on fixing pump shaft, be fixed on rotating ring on axle sleeve, be fixed on the stationary ring on sealing seat; Described rotating ring and stationary ring fitted seal; Stationary ring rear end is also provided with the spring for compensatory pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320353208.2U CN203430843U (en) | 2013-06-20 | 2013-06-20 | Three-stage sealed type special coal-washing pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320353208.2U CN203430843U (en) | 2013-06-20 | 2013-06-20 | Three-stage sealed type special coal-washing pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203430843U true CN203430843U (en) | 2014-02-12 |
Family
ID=50059886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320353208.2U Expired - Fee Related CN203430843U (en) | 2013-06-20 | 2013-06-20 | Three-stage sealed type special coal-washing pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203430843U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201895A (en) * | 2015-09-06 | 2015-12-30 | 广德玉龙泵业有限公司 | Centrifugal pump |
| CN105422863B (en) * | 2015-12-10 | 2017-09-08 | 西安航天动力研究所 | A kind of liquid oxygen pump sealer with assembled |
-
2013
- 2013-06-20 CN CN201320353208.2U patent/CN203430843U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201895A (en) * | 2015-09-06 | 2015-12-30 | 广德玉龙泵业有限公司 | Centrifugal pump |
| CN105422863B (en) * | 2015-12-10 | 2017-09-08 | 西安航天动力研究所 | A kind of liquid oxygen pump sealer with assembled |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20150620 |
|
| EXPY | Termination of patent right or utility model |