CN216767847U - High-sealing-performance shaft for centrifugal pump - Google Patents
High-sealing-performance shaft for centrifugal pump Download PDFInfo
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- CN216767847U CN216767847U CN202220366994.9U CN202220366994U CN216767847U CN 216767847 U CN216767847 U CN 216767847U CN 202220366994 U CN202220366994 U CN 202220366994U CN 216767847 U CN216767847 U CN 216767847U
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Abstract
The utility model relates to the technical field of pump shaft sealing, and discloses a high-sealing-performance shaft for a centrifugal pump, which comprises a pump shaft, wherein a first static sealing ring is arranged on the periphery of the upper end of a static sealing ring, a second static sealing ring is arranged on the periphery of the lower end of the static sealing ring, one end, far away from a transmission spring, of the static sealing ring is fixedly connected with a movable sealing ring, and the middle part in the movable sealing ring is provided with the movable sealing ring. According to the utility model, fluid is effectively prevented from leaking from the joint of the gland and the static sealing ring through the first static sealing ring and the second static sealing ring, fluid can be effectively prevented from leaking along gaps between the outer wall of the pump shaft and the static sealing ring as well as between the outer wall of the pump shaft and the lower end connecting piece through the dynamic sealing ring, the spring seat and the transmission spring are driven to rotate together when the pump shaft rotates, the transmission spring further transmits kinetic energy to the dynamic sealing ring, the dynamic sealing ring is attached to the outer wall of the pump shaft more tightly under the action of centrifugal force, and the sealing effect is greatly improved.
Description
Technical Field
The utility model relates to the technical field of pump shaft sealing, in particular to a high-sealing shaft for a centrifugal pump.
Background
The centrifugal pump is a pump for transporting a liquid by centrifugal force generated when an impeller rotates. Before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to rotate at a high speed, the water is thrown to the outer edge of the impeller in a centrifugal motion, and flows into a water pressure pipeline of the water pump through a flow channel of the volute-shaped pump shell. And the pump shaft must have high sealing performance to be normally used.
Chinese patent document CN213360542U discloses a centrifugal pump shaft, comprising a shaft rod, wherein the shaft rod comprises a motor connecting end and an impeller connecting end, the diameter of the motor connecting end is larger than that of the impeller connecting end, the end part of the motor connecting end is provided with a fixing head, the surface of the motor connecting end is also provided with a plurality of grooves, the surface of the impeller connecting end is smooth, and the front end part is provided with a connecting through hole, the utility model overcomes the defects that the centrifugal pump shaft in the prior art has poor fixing effect and low power transmission efficiency, the surface of the motor connecting end of the utility model is provided with a plurality of grooves which can be used for being clamped with a coupler, thereby effectively preventing the loosening in the rotation process and further influencing the transmission effect, therefore, the pump shaft in the utility model can have good power transmission effect in the operation process, but the sealing effect of the pump shaft in the actual use, there is a leak condition of the fluid.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides a high-sealing shaft for a centrifugal pump.
In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a high leakproofness axle for centrifugal pump, includes the pump shaft, pump shaft upper portion periphery rotates and is connected with the gland, gland lower extreme middle part is provided with the static sealing ring, static sealing ring upper end periphery is provided with first static sealing washer, static sealing ring lower extreme periphery is provided with the static sealing washer of second, upper portion periphery fixedly connected with spring holder in the pump shaft, the equal fixedly connected with drive spring in lower extreme middle part on the spring holder, the equal fixedly connected with movable seal ring of one end that drive spring kept away from mutually, the movable seal intra-annular middle part is provided with the movable seal circle, the movable seal circle middle part all runs through and sliding connection is in the pump shaft periphery.
As a further description of the above technical solution:
the pump shaft penetrates through and is rotatably connected to the inner wall of the first sealing gasket.
As a further description of the above technical solution:
the middle part of the gland is provided with a first sealing bearing at the periphery of the pump shaft, and the middle part of the first sealing bearing penetrates through and is fixedly connected to the periphery of the upper part of the pump shaft.
As a further description of the above technical solution:
the middle parts of two sides of the static sealing ring are respectively provided with a clamping groove, clamping blocks are clamped in the clamping grooves, and the clamping blocks are respectively and fixedly connected to two sides of the lower portion of the gland.
As a further description of the above technical solution:
the middle parts of the transmission springs penetrate through and are close to the periphery of the pump shaft.
As a further description of the above technical solution:
the middle parts of the dynamic sealing rings penetrate through and are rotatably connected to the periphery of the pump shaft.
As a further description of the above technical solution:
and the periphery of the middle lower part of the pump shaft penetrates through and is fixedly connected with a second sealing bearing.
As a further description of the above technical solution:
and the periphery of the lower end of the pump shaft penetrates through and is rotatably connected with a second sealing gasket.
The utility model has the following beneficial effects:
the dynamic sealing ring can effectively prevent fluid from leaking from the joint of the gland and the static sealing ring, the dynamic sealing ring in the dynamic sealing ring can effectively prevent fluid from leaking along gaps between the outer wall of the pump shaft and the static sealing ring as well as between the static sealing ring and the lower end connecting piece, and when the pump shaft rotates, the spring seat and the transmission spring are driven to rotate together, the transmission spring further transmits kinetic energy to the dynamic sealing ring, the dynamic sealing ring is tightly attached to the outer wall of the pump shaft under the action of centrifugal force, and the sealing effect is greatly improved.
Drawings
FIG. 1 is a front cross-sectional view of a high-sealability shaft for a centrifugal pump in accordance with the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
fig. 3 is an enlarged view at B in fig. 1.
Illustration of the drawings:
1. a pump shaft; 2. a gland; 3. a first gasket; 4. a first sealed bearing; 5. a static seal ring; 6. a card slot; 7. a clamping block; 8. a first static seal ring; 9. a second static seal ring; 10. a spring seat; 11. a transmission spring; 12. a movable sealing ring; 13. a movable sealing ring; 14. a second sealed bearing; 15. a second gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, one embodiment of the present invention is provided: the utility model provides a high leakproofness axle for centrifugal pump, including pump shaft 1, 1 upper portion periphery of pump shaft rotates and is connected with gland 2, 2 lower extreme middle parts of gland are provided with static sealing ring 5, 5 upper end peripheries of static sealing ring are provided with first static sealing washer 8, 5 lower extreme peripheries of static sealing ring are provided with second static sealing washer 9, at first can prevent effectively that fluid from leaking from gland 2 and static sealing ring 5's junction through static sealing ring 5 and first static sealing washer 8 and second static sealing washer 9, upper portion periphery fixedly connected with spring holder 10 in pump shaft 1, the equal fixedly connected with drive spring 11 in 10 upper and lower extreme middle parts of spring holder, the equal fixedly connected with movable seal ring 12 of one end that drive spring 11 kept away from mutually, the middle part is provided with movable seal ring 13 in movable seal ring 12, movable seal ring 13 middle part all runs through and sliding connection is in 1 periphery of pump shaft, movable seal ring 13 through in movable seal ring 12 can prevent effectively that fluid from along pump shaft 1 outer wall and static sealing ring 5 and lower extreme connecting piece from the fluid The gap between leaks, and when pump shaft 1 rotated, drives spring holder 10 and transmission spring 11 and rotates together, and transmission spring 11 and then transmits kinetic energy for moving seal ring 12, makes under the effect of centrifugal force moving seal ring 13 tighter with the laminating of pump shaft 1 outer wall, has improved sealed effect greatly.
The upper part of a gland 2 is provided with a first sealing gasket 3 at the periphery of a pump shaft 1, the pump shaft 1 penetrates through and is rotatably connected with the inner wall of the first sealing gasket 3, the sealing effect is further improved, the middle part of the gland 2 is provided with a first sealing bearing 4 at the periphery of the pump shaft 1, the middle part of the first sealing bearing 4 penetrates through and is fixedly connected with the periphery of the upper part of the pump shaft 1, the sealing performance is ensured, the friction is reduced, the service life is prolonged, the middle parts of two sides of a static sealing ring 5 are respectively provided with a clamping groove 6, the clamping grooves 6 are respectively clamped with a clamping block 7 for fixing the static sealing ring 5, the clamping blocks 7 are respectively and fixedly connected with two sides of the lower part of the gland 2, the middle part of a transmission spring 11 penetrates through and is close to the periphery of the pump shaft 1, the middle part of a movable sealing ring 12 penetrates through and is rotatably connected with the periphery of the pump shaft 1, the mobility of the movable sealing ring 12 is ensured, the periphery of the middle and lower part of the pump shaft 1 penetrates through and is fixedly connected with a second sealing bearing 14, the periphery of the lower end of the pump shaft 1, and is rotatably connected with a second sealing gasket 15, in the same way, the sealing performance of the pump shaft 1 is further improved.
The working principle is as follows: at first, can prevent effectively through quiet sealing ring 5 and first quiet sealing washer 8 and second quiet sealing washer 9 that fluid from gland 2 and the junction of quiet sealing ring 5 from leaking, can prevent effectively through the movable seal circle 13 in movable seal ring 12 that fluid from leaking along the gap between pump shaft 1 outer wall and quiet sealing ring 5 and the lower extreme connecting piece, and when pump shaft 1 rotated, drive spring holder 10 and transmission spring 11 rotated together, transmission spring 11 and then transmitted kinetic energy to movable seal ring 12, make the movable seal circle 13 tighter with the laminating of pump shaft 1 outer wall under the effect of centrifugal force, the sealing effect has been improved greatly.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (8)
1. A high-sealing shaft for a centrifugal pump, comprising a pump shaft (1), characterized in that: the pump shaft (1) upper portion periphery is rotated and is connected with gland (2), gland (2) lower extreme middle part is provided with static sealing ring (5), static sealing ring (5) upper end periphery is provided with first static sealing washer (8), static sealing ring (5) lower extreme periphery is provided with second static sealing washer (9), upper portion periphery fixedly connected with spring holder (10) in pump shaft (1), the equal fixedly connected with transmission spring (11) in spring holder (10) upper and lower end middle part, the equal fixedly connected with of one end that transmission spring (11) kept away from mutually moves sealing ring (12), it is provided with in the middle part moves sealing ring (12) and moves sealing ring (13), move sealing ring (13) middle part and all run through and sliding connection in pump shaft (1) periphery.
2. A high-sealability shaft for a centrifugal pump according to claim 1 wherein: the pump is characterized in that a first sealing gasket (3) is arranged on the periphery of the pump shaft (1) on the upper portion of the gland (2), and the pump shaft (1) penetrates through and is rotatably connected to the inner wall of the first sealing gasket (3).
3. A high-sealability shaft for a centrifugal pump according to claim 1 wherein: the pump is characterized in that a first sealing bearing (4) is arranged on the periphery of the pump shaft (1) in the middle of the gland (2), and the middle of the first sealing bearing (4) penetrates through and is fixedly connected to the periphery of the upper portion of the pump shaft (1).
4. A high-sealability shaft for a centrifugal pump according to claim 1 wherein: the middle parts of two sides of the static sealing ring (5) are respectively provided with a clamping groove (6), the clamping grooves (6) are respectively clamped with a clamping block (7), and the clamping blocks (7) are respectively and fixedly connected to two sides of the lower part of the gland (2).
5. A high-sealability shaft for a centrifugal pump according to claim 1 wherein: the middle parts of the transmission springs (11) penetrate through and are close to the periphery of the pump shaft (1).
6. A high-sealability shaft for a centrifugal pump according to claim 1 wherein: the middle parts of the dynamic sealing rings (12) penetrate through and are rotationally connected to the periphery of the pump shaft (1).
7. A high-sealability shaft for a centrifugal pump according to claim 1 wherein: the periphery of the middle lower part of the pump shaft (1) penetrates through and is fixedly connected with a second sealing bearing (14).
8. A high-sealability shaft for a centrifugal pump according to claim 1 wherein: the periphery of the lower end of the pump shaft (1) penetrates through and is rotatably connected with a second sealing gasket (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220366994.9U CN216767847U (en) | 2022-02-23 | 2022-02-23 | High-sealing-performance shaft for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220366994.9U CN216767847U (en) | 2022-02-23 | 2022-02-23 | High-sealing-performance shaft for centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216767847U true CN216767847U (en) | 2022-06-17 |
Family
ID=81957022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220366994.9U Active CN216767847U (en) | 2022-02-23 | 2022-02-23 | High-sealing-performance shaft for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216767847U (en) |
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2022
- 2022-02-23 CN CN202220366994.9U patent/CN216767847U/en active Active
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