CN202597203U - Vertical axial flow pump sealing device - Google Patents
Vertical axial flow pump sealing device Download PDFInfo
- Publication number
- CN202597203U CN202597203U CN 201220228864 CN201220228864U CN202597203U CN 202597203 U CN202597203 U CN 202597203U CN 201220228864 CN201220228864 CN 201220228864 CN 201220228864 U CN201220228864 U CN 201220228864U CN 202597203 U CN202597203 U CN 202597203U
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- CN
- China
- Prior art keywords
- propeller
- sub
- filler
- seal
- sealing device
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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 - Lifetime
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Abstract
The utility model discloses a vertical axial flow pump sealing device, which comprises a static sealing device arranged in a sealing cavity on the upper side of a pump body elbow, and a movable sealing device arranged at the lower end of the static sealing device, wherein the static sealing device comprises a filler box which is fixed on a shell and surrounds a pump shaft; a filler for sealing is filled in the filler box and is matched with a shaft sleeve for sealing; the rear end of the filler box is provided with a filler gland for pressing the filler; the movable sealing device comprises a secondary impeller chamber fixed on the shell; and a secondary impeller which is coaxial with the impeller is fixedly arranged in the impeller chamber in a direction which is reverse to that of the impeller. By the vertical axial flow pump sealing device, the pressure at the filler sealing part can be reduced; and moreover, the solid particles in the medium are prevented from entering a friction pair in filler seal, the wear of a filler seal abrasion block is reduced, and the service life is prolonged.
Description
Technical field
The utility model relates to a kind of seal arrangement that is used for vertical-type axial-flow pump.
Background technique
What existing vertical-type axial-flow pump adopted is static seal, promptly on the housing of impeller rear end, fixedly installs stuffing box, and in stuffing box, places sealing material, is used to fill the slit between axle and housing, plays the effect of sealing.Because axial-flow pump in use, medium can constantly wash away sealing part, sealing part is exerted pressure, and solid particle can get in the gland sealed friction pair with medium, increases the gland sealed wearing and tearing, makes axial-flow pump reduce working life.
The model utility content
To the technical problem of above-mentioned existence, the utility model provides a kind of seal arrangement of vertical-type axial-flow pump, can reduce the pressure of packing seal place, and stops the solid particle engaging friction secondary.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopts is:
A kind of seal arrangement of vertical-type axial-flow pump comprises the static seal device that is arranged in the pump housing bend pipe upside Seal cage; Said static seal device comprises that one is fixed on the housing and around the stuffing box of pump shaft, is filled with the filler that is used to seal in the said stuffing box; Said filler cooperates with axle sleeve and carries out seal operation; Said stuffing box rear end is provided with and is used for Gland that filler is compressed; Also comprise the dynamic seal apparatus that is arranged on the static seal device lower end; Described dynamic seal apparatus comprises the sub-propeller chamber that is fixed on the housing, is provided with in the said blade wheel chamber and the coaxial reverse hard-wired sub-propeller of impeller.
As a kind of improvement, said dynamic seal apparatus comprises along one-level sub-propeller chamber that pump shaft axially sets gradually from top to bottom and secondary sub-propeller chamber; The indoor sub-propeller that is provided with of said one-level sub-propeller chamber and secondary sub-propeller; Said sub-propeller relies on driving key to rotate with pump shaft; The indoor sub-propeller below of said one-level sub-propeller is provided with the lock washer that is used for fixing sub-propeller.
As a kind of preferred, described sub-propeller is a unshrouded impeller.
The usefulness of the utility model is:
Seal arrangement with vertical-type axial-flow pump of said structure can reduce the pressure of packing seal place, stops the solid particle in the medium to get in the gland sealed friction pair on the other hand, reduces the wearing and tearing of packing seal abrading block, prolongs its working life.Sub-propeller can also play the effect that reduces axial force except playing seal action.The setting of two-stage sub-propeller can not bring excessive energy expense for axial-flow pump again when increasing sealing effect.The unshrouded impeller consumed energy is less, avoids influencing the overall performance of axial-flow pump.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the utility model I place enlarged view.
Mark among the figure: 11 bend pipes, 12 pump shafts, 14 lock washers, 16 driving keys, 17 sub-propellers, 19 axle sleeves, 20 fillers, 23 Glands, 24 stuffing boxes, 25 Glands, one-level sub-propeller chambers 50, secondary sub-propeller chambers 51.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
For the purpose, technological scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 1:
The utility model comprises the static seal device that is arranged in the pump housing bend pipe 11 upside Seal cages; Said static seal device comprises that one is fixed on the housing and around the stuffing box 24 of pump shaft 12, is filled with the filler 20 that is used to seal in the said stuffing box 24; Said filler 20 cooperates with axle sleeve 19 and carries out seal operation; Said stuffing box 24 rear ends are provided with and are used for Gland 25 that filler 20 is compressed; Also comprise the dynamic seal apparatus that is arranged on the static seal device lower end; Described dynamic seal apparatus comprises the sub-propeller chamber that is fixed on the housing, is provided with in the said blade wheel chamber and the coaxial reverse hard-wired sub-propeller 17 of impeller.
As most preferred embodiment, dynamic seal apparatus preferably includes the one-level sub-propeller chamber 50 and secondary sub-propeller chamber 51 that axially sets gradually from top to bottom along pump shaft 12; Be provided with sub-propeller 17 in said one-level sub-propeller chamber 50 and the secondary sub-propeller chamber 51; Said sub-propeller 17 relies on driving key 16 to rotate with pump shaft 12; Sub-propeller 17 belows in the said one-level sub-propeller chamber 50 are provided with the lock washer 14 that is used for fixing sub-propeller 17.
During work, the effect that filler 20 in the stuffing box 24 and axle sleeve 19 play static seal; Sub-propeller 17 relies on driving key 16 with pump shaft 12 rotations; Liquid in the sub-propeller 17 also can rotate together; The liquid that rotates can produce an outside centrifugal force, and this centrifugal force withstands the liquid that flows to filler 20 places on the one hand, has reduced the pressure of filler 20 sealing part.Stop the solid particle in the medium to get in the friction pair of filler 20 sealings on the other hand, reduce the wearing and tearing of filler 20 sealings, prolonged its working life.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (3)
1. the seal arrangement of a vertical-type axial-flow pump comprises the static seal device that is arranged in the pump housing bend pipe upside Seal cage; Said static seal device comprises that one is fixed on the housing and around the stuffing box of pump shaft, is filled with the filler that is used to seal in the said stuffing box; Said filler cooperates with axle sleeve and carries out seal operation; Said stuffing box rear end is provided with and is used for Gland that filler is compressed, it is characterized in that: also comprise the dynamic seal apparatus that is arranged on the static seal device lower end; Described dynamic seal apparatus comprises the sub-propeller chamber that is fixed on the housing, is provided with in the said blade wheel chamber and the coaxial reverse hard-wired sub-propeller of impeller.
2. the seal arrangement of vertical-type axial-flow pump according to claim 1, it is characterized in that: said dynamic seal apparatus comprises along one-level sub-propeller chamber that pump shaft axially sets gradually from top to bottom and secondary sub-propeller chamber; The indoor sub-propeller that is provided with of said one-level sub-propeller chamber and secondary sub-propeller; Said sub-propeller relies on driving key to rotate with pump shaft; The indoor sub-propeller below of said one-level sub-propeller is provided with the lock washer that is used for fixing sub-propeller.
3. the seal arrangement of vertical-type axial-flow pump according to claim 1, it is characterized in that: described sub-propeller is a unshrouded impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220228864 CN202597203U (en) | 2012-05-21 | 2012-05-21 | Vertical axial flow pump sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220228864 CN202597203U (en) | 2012-05-21 | 2012-05-21 | Vertical axial flow pump sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202597203U true CN202597203U (en) | 2012-12-12 |
Family
ID=47314750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220228864 Expired - Lifetime CN202597203U (en) | 2012-05-21 | 2012-05-21 | Vertical axial flow pump sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202597203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105144A (en) * | 2017-12-28 | 2018-06-01 | 四川省自贡工业泵有限责任公司 | Vertical long pump for liquid salts |
-
2012
- 2012-05-21 CN CN 201220228864 patent/CN202597203U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105144A (en) * | 2017-12-28 | 2018-06-01 | 四川省自贡工业泵有限责任公司 | Vertical long pump for liquid salts |
| CN108105144B (en) * | 2017-12-28 | 2024-03-26 | 四川省自贡工业泵有限责任公司 | Vertical long-axis molten salt pump |
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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: 20121212 |