CN201155482Y - Centrifugal pump seal device - Google Patents
Centrifugal pump seal device Download PDFInfo
- Publication number
- CN201155482Y CN201155482Y CNU200820069132XU CN200820069132U CN201155482Y CN 201155482 Y CN201155482 Y CN 201155482Y CN U200820069132X U CNU200820069132X U CN U200820069132XU CN 200820069132 U CN200820069132 U CN 200820069132U CN 201155482 Y CN201155482 Y CN 201155482Y
- Authority
- CN
- China
- Prior art keywords
- hold
- centrifugal pump
- cover
- down ring
- group
- 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
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- Applications Or Details Of Rotary Compressors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a sealing device of a centrifugal pump impeller shaft, which comprises an external sealing shell, wherein a primary screwy sheath is arranged in the external sealing shell; a bush is sheathed around the primary screwy sheath; the bush is connected with an internal sealing shell; a secondary screwy sheath is sheathed around the bush; a vacuum sleeve gasket, a clamp ring and a stopper ring are sheathed around the secondary screwy sheath; the secondary screwy sheath are connected with a rotary gland, and the external wall of the primary screwy sheath, the internal wall of the secondary screwy sheath, and the internal and the external walls of the bush are all provided with sealing teeth. The utility model is capable of avoiding leakage in use.
Description
Technical field
The utility model relates to a kind of centrifugal pump impeller shaft seal.
Background technique
At present, adopt asbestos packing or teflon packing that the centrifugal pump impeller axle is sealed.But, in long-term using process,, make the progressively wearing and tearing of asbestos packing along with the continuous running of impeller shaft, cause centrifugal pump impeller axle place poorly sealed, seepage appears.
The content of model utility
The purpose of this utility model provides a kind of centrifugal pump seal arrangement, and it in use seepage can not occur.
For solving the problems of the technologies described above, the utility model comprises: the external sealed shell, establish the one-level screw-casing in the external sealed shell, the outer suit lining of one-level screw-casing, lining is connected with interior capsul, the outer suit deuterostrophies cover of lining, deuterostrophies cover outer suit vacuum seal cover, hold-down ring and baffle ring, deuterostrophies cover with rotate gland and be connected, and the inwall that overlaps of the outer wall of one-level screw-casing, deuterostrophies, the inner and outer wall of lining are equipped with the sealing tooth.
The sealing tooth is a stepped tooth.
Establish oilhole on the hold-down ring, and the lubricating cup that is connected on oilhole and the external sealed shell is communicated with.
Vacuum seal cover and a hold-down ring are one group, and the installation direction of totally two groups and two groups is identical.
Vacuum seal cover and a hold-down ring are one group, and the installation direction of totally two groups and two groups is opposite.
A vacuum seal cover and a hold-down ring are one group, have more than two groups.
A vacuum seal cover and a hold-down ring are one group, have one group of installation direction with other group opposite.
A vacuum seal cover and a hold-down ring are one group, have two groups of installation directions with other group opposite.
The utility model utilizes principle of hydrodynamics, adopts motive sealing and static seal to combine, and makes the pump housing turn round or can seepage when stopping.During rotation work, the thrust that one-level screw-casing and deuterostrophies overlap and sub-propeller produced makes and is entirely vacuum state in the capsul greater than the maximum pressure in the pump chamber; And when stopping, the vacuum seal cover of setting can fully be guaranteed the ne-leakage that stops.
Description of drawings
Fig. 1 is the sectional drawing of first kind of mode of execution of the utility model centrifugal pump seal arrangement.
Fig. 2 is the sectional drawing of second kind of mode of execution of the utility model centrifugal pump seal arrangement.
Embodiment
First kind of mode of execution of centrifugal pump seal arrangement shown in Figure 1: the rear portion suit internal protective plate 14 of interior capsul 13, interior capsul and internal protective plate axial centre place have through hole, and the mouth of interior capsul and internal protective plate is provided with O RunddichtringO 12 along the joint, and the front portion of interior capsul has positioning hole.By penetrating the bolt of positioning hole, lining 7 and interior capsul are connected as one.One-level screw-casing 6 is sleeved on the impeller shaft 5, be placed in the lining, and the O RunddichtringO is established in the two ends of one-level screw-casing and impeller shaft joint.Lining 7 outer suit deuterostrophies covers 3, the outer suit rubber system vacuum seal cover 9 of deuterostrophies cover, hold-down ring 8 and baffle ring 11.A vacuum seal cover and a hold-down ring are one group, establish two groups altogether outside the deuterostrophies cover, and two groups installation direction are identical.The installation direction of described two groups of vacuum seal covers and hold-down ring is identical to be meant that the installation of two groups of vacuum seal covers and hold-down ring is towards identical, promptly earlier at deuterostrophies cover outer hold-down ring of suit and then vacuum seal cover of suit, follow behind hold-down ring of suit vacuum seal cover of suit again.Before the vacuum seal cover, place baffle ring, and connect the O RunddichtringO on the baffle ring.On a hold-down ring, have oilhole, and the lubricating cup 2 that connects on the oilhole connection external sealed shell, to reduce the wearing and tearing of vacuum seal cover.Above-mentioned all parts are sleeved in the external sealed shell 1, and the axial centre of external sealed shell has through hole, and through-hole wall establishes the O RunddichtringO, and the deuterostrophies cover passes the through hole on the external sealed shell.The front portion of deuterostrophies cover is connected with rotation gland 4 by bolt, and also has the hole on the rotation gland, and impeller shaft 5 passes the hole of rotating on the gland.The inwall of the outer wall of one-level screw-casing, deuterostrophies cover, the inner and outer wall of lining are equipped with trapezoidal sealing tooth.
Second kind of mode of execution of centrifugal pump seal arrangement as shown in Figure 2: the rear portion suit internal protective plate 14 of interior capsul 13, interior capsul and internal protective plate axial centre place have through hole, and the mouth of interior capsul and internal protective plate is provided with O RunddichtringO 12 along the joint, and the front portion of interior capsul has positioning hole.By penetrating the bolt of positioning hole, lining 7 and interior capsul are connected as one.One-level screw-casing 6 is sleeved on the impeller shaft 5, be placed in the lining, and the O RunddichtringO is established in the two ends of one-level screw-casing and impeller shaft joint.Lining 7 outer suit deuterostrophies covers 3, the outer suit rubber system vacuum seal cover 9 of deuterostrophies cover, hold-down ring 8 and baffle ring 11.A vacuum seal cover and a hold-down ring are one group, establish two groups altogether outside the deuterostrophies cover, and two groups installation direction are opposite.The installation direction of described two groups of vacuum seal covers and hold-down ring is meant that on the contrary two groups of vacuum seal covers and hold-down ring install towards on the contrary, i.e. earlier hold-down ring of suit and then vacuum seal cover of suit outside the deuterostrophies cover, then with outside the vacuum seal cover Rotate 180 degree suit deuterostrophies cover, and then hold-down ring of suit, the bottom connection of two groups of vacuum seal covers and hold-down ring is touched.Before hold-down ring, place baffle ring, and connect the O RunddichtringO on the baffle ring, also hold-down ring can be installed, or hold-down ring is placed between two groups of vacuum seal covers and the hold-down ring.On a hold-down ring, have oilhole, and the lubricating cup 2 that connects on the oilhole connection external sealed shell, to reduce the wearing and tearing of vacuum seal cover.Above-mentioned all parts are sleeved in the external sealed shell 1, and the axial centre of external sealed shell has through hole, and through-hole wall establishes the O RunddichtringO, and the deuterostrophies cover passes the through hole on the external sealed shell.The front portion of deuterostrophies cover is connected with rotation gland 4 by bolt, and also has the hole on the rotation gland, and impeller shaft 5 passes the hole of rotating on the gland.The inwall of the outer wall of one-level screw-casing, deuterostrophies cover, the inner and outer wall of lining are equipped with trapezoidal sealing tooth.
As improvement of the present utility model, further prevent the utility model possible seepage when static, 3,4 or 5 vacuum seal covers and hold-down ring are set outside deuterostrophies cover, and the installation direction of vacuum seal cover and hold-down ring is identical, or has the installation direction of 1-2 vacuum seal cover and hold-down ring opposite with the installation direction of other vacuum seal cover and hold-down ring.
During the utility model work, high-pressure liquid head in the pump chamber is before entering Seal cage, the decompression first time through main impeller 10 back back blades, this part post-decompression fluid enters the sub-propeller chamber again, though the secondary decompression through sub-propeller 15 still has segment fluid flow to enter seal arrangement, this part fluid is after overlapping by one-level screw-casing, deuterostrophies, pressure is reduced to vacuum state, so fluid can not go out seepage from seal arrangement when this device moves.
Claims (8)
1. centrifugal pump seal arrangement, it is characterized in that: it comprises external sealed shell (1), establish one-level screw-casing (6) in the external sealed shell, the outer suit lining (7) of one-level screw-casing, lining is connected with interior capsul (13), the outer suit deuterostrophies cover (3) of lining, deuterostrophies cover outer suit vacuum seal cover (9), hold-down ring (8) and baffle ring (11), deuterostrophies cover with rotate gland (4) and be connected, and the inwall that overlaps of the outer wall of one-level screw-casing, deuterostrophies, the inner and outer wall of lining are equipped with the sealing tooth.
2. centrifugal pump seal arrangement according to claim 1 is characterized in that: described sealing tooth is a stepped tooth.
3. centrifugal pump seal arrangement according to claim 1 is characterized in that: establish oilhole on the described hold-down ring, and the lubricating cup (2) that is connected on oilhole and the external sealed shell is communicated with.
4. according to claim 1,2 or 3 described centrifugal pump seal arrangements, it is characterized in that: described vacuum seal cover and a hold-down ring are one group, and the installation direction of totally two groups and two groups is identical.
5. according to claim 1,2 or 3 described centrifugal pump seal arrangements, it is characterized in that: described vacuum seal cover and a hold-down ring are one group, and the installation direction of totally two groups and two groups is opposite.
6. according to claim 1,2 or 3 described centrifugal pump seal arrangements, it is characterized in that: described vacuum seal cover and a hold-down ring are one group, have more than two groups.
7. centrifugal pump seal arrangement according to claim 6 is characterized in that: described vacuum seal cover and a hold-down ring are one group, have one group of installation direction with other group opposite.
8. centrifugal pump seal arrangement according to claim 6 is characterized in that: described vacuum seal cover and a hold-down ring are one group, have two groups of installation directions with other group opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820069132XU CN201155482Y (en) | 2008-01-23 | 2008-01-23 | Centrifugal pump seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820069132XU CN201155482Y (en) | 2008-01-23 | 2008-01-23 | Centrifugal pump seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201155482Y true CN201155482Y (en) | 2008-11-26 |
Family
ID=40103266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820069132XU Expired - Fee Related CN201155482Y (en) | 2008-01-23 | 2008-01-23 | Centrifugal pump seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201155482Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953167A (en) * | 2018-09-12 | 2018-12-07 | 泰州泰东泵业有限公司 | submerged pump |
| CN108953215A (en) * | 2018-09-12 | 2018-12-07 | 泰州泰东泵业有限公司 | Pump multi-level gland seal device |
-
2008
- 2008-01-23 CN CNU200820069132XU patent/CN201155482Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953167A (en) * | 2018-09-12 | 2018-12-07 | 泰州泰东泵业有限公司 | submerged pump |
| CN108953215A (en) * | 2018-09-12 | 2018-12-07 | 泰州泰东泵业有限公司 | Pump multi-level gland seal device |
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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: 20081126 Termination date: 20120123 |