CN221074722U - Pump shaft seal structure - Google Patents
Pump shaft seal structure Download PDFInfo
- Publication number
- CN221074722U CN221074722U CN202322370011.6U CN202322370011U CN221074722U CN 221074722 U CN221074722 U CN 221074722U CN 202322370011 U CN202322370011 U CN 202322370011U CN 221074722 U CN221074722 U CN 221074722U
- Authority
- CN
- China
- Prior art keywords
- base
- top seat
- spring
- telescopic part
- telescopic
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 17
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 6
- 229910052786 argon Inorganic materials 0.000 claims abstract description 5
- 239000013013 elastic material Substances 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims abstract description 5
- 210000004907 gland Anatomy 0.000 description 6
- 238000012856 packing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a centrifugal pump shaft sealing structure, which comprises a telescopic ring, wherein the telescopic ring comprises a base and a top seat connected with the base through a telescopic part; a first annular groove is formed along the inner surface of the base, and a first sealing ring is arranged in the first annular groove; the top seat is connected with the other end of the telescopic part, a second annular groove is formed in the inner surface of the top seat, a second sealing ring is installed in the second annular groove, an open groove is formed in the outer surface of the top seat, and a rotating ring is installed in the open groove; one end of the telescopic part is connected with the base, the main body of the telescopic part is of a wavy structure, a spring is arranged in the telescopic part, the end parts of the two ends of the spring are of a rounding structure, and the two ends of the spring are respectively arranged on the inner side surfaces of the base and the top seat in a limiting mode through the rounding structure. When the utility model is used for sealing, as the two end parts of the spring are smooth rounded structures prepared by adopting an argon arc welding process, the spring cannot damage the base, the telescopic part and the top seat which are made of elastic materials.
Description
Technical Field
The utility model relates to the field of centrifugal pump shaft sealing, in particular to a centrifugal pump shaft sealing structure.
Background
The shaft seal of the centrifugal pump plays a key role in the operation of the pump, and is mainly used for preventing medium in the pump from leaking and external medium from entering, so that the normal operation and sealing performance of the pump are ensured.
For example, patent document 201920594276.5 discloses a shaft seal device, which has the technical scheme that: a shaft seal device comprises a shaft seal box body matched with a shaft sleeve of a centrifugal pump, a packing gland matched with a top port of the shaft seal box body, and a buckling assembly arranged between the shaft seal box body and the packing gland.
Above-mentioned technical scheme is through the bearing seal case body that sets up on the centrifugal pump axle sleeve, with bearing seal case body top port matched with gland to and set up the lock subassembly between bearing seal case body and gland and seal the centrifugal pump axle, the lock subassembly carries out the lock fixedly to bearing seal case body and gland, and is sealed effectual. But it seals through split type gland, appears misplacement easily, influences its sealed effect. In addition, the two ends of the existing spring can leave sharp cutting edges after being ground by a grinding machine, chamfering is needed to be ground, and otherwise, the telescopic ring can be damaged.
Therefore, there is a need for an improvement in such a structure to overcome the above-mentioned drawbacks.
Disclosure of utility model
The utility model aims to provide a shaft seal structure of a centrifugal pump, which aims to solve the problems in the prior art.
The technical aim of the utility model is realized by the following technical scheme:
the shaft seal structure of the centrifugal pump comprises a telescopic ring, wherein the telescopic ring comprises a base and a top seat connected with the base through a telescopic part;
A first annular groove is formed along the inner surface of the base, and a first sealing ring is arranged in the first annular groove; the top seat is connected with the other end of the telescopic part, a second annular groove is formed in the inner surface of the top seat, a second sealing ring is installed in the second annular groove, an open groove is formed in the outer surface of the top seat, a rotating ring is installed in the open groove, and a sealing gasket is arranged between the rotating ring and the bottom of the open groove;
One end of the telescopic part is connected with the base, the main body of the telescopic part is of a wavy structure, a spring is arranged in the telescopic part, the end parts of the two ends of the spring are of a rounding structure, and the two ends of the spring are respectively arranged on the inner side surfaces of the base and the top seat in a limiting mode through the rounding structure.
Further, the base, the telescopic part and the top seat are made of elastic materials, and the base, the telescopic part and the top seat are connected through an integrated structure.
Furthermore, the end parts of the two ends of the spring are smooth fillets prepared by adopting an argon arc welding process.
Further, the inner side of the base is provided with a first limit terminal, the inner side of the top seat is provided with a second limit terminal, and two ends of the spring are respectively arranged in a limiting mode through the first limit terminal and the second limit terminal.
Further, the top of the rotating ring is flush with the end face of the top seat.
In summary, the utility model has the following beneficial effects:
after the impeller is fixed by the locking screw, the telescopic ring with the spring is elastically compressed, and two ends of the telescopic ring are respectively tightly sealed with the motor and the impeller.
Drawings
FIG. 1 is a cross-sectional view of a shaft seal structure of a centrifugal pump according to the present utility model.
Fig. 2 is a schematic view of a spring structure according to the present utility model.
Fig. 3 is a perspective view of the present utility model.
Fig. 4 is a schematic view of an installation according to the present utility model.
Detailed Description
In order that the manner in which the above-recited features, advantages, objects and advantages of the utility model are obtained, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
As shown in fig. 1 and 4, the pump shaft seal structure of the present utility model includes a telescopic ring 1, where the telescopic ring 1 includes a base 11 and a top seat 13 connected to the base 11 through a telescopic portion 12;
a first annular groove 111 is formed along the inner surface of the base 11, and a first sealing ring 2 is installed in the first annular groove 111; the top seat 13 is connected with the other end of the telescopic part 12, a second annular groove 4 is formed in the inner surface of the top seat 13, a second sealing ring 5 is installed in the second annular groove 4, an open groove 8 is formed in the outer surface of the top seat 13, a rotating ring 6 is installed in the open groove 8, and a sealing gasket 7 is arranged between the rotating ring 6 and the bottom of the open groove 8;
One end of the telescopic part 12 is connected with the base 11, the main body of the telescopic part 12 is of a wave-shaped structure, the spring 3 is arranged in the telescopic part 12, the end parts of the two ends of the spring 3 are of round-corner structures 31, and the two ends of the spring 3 are respectively arranged on the inner side surfaces of the base 11 and the top seat 13 in a limiting mode through the round-corner structures 31.
The base 11, the telescopic part 12 and the top seat 13 are made of elastic materials, and the base 11, the telescopic part 12 and the top seat 13 are connected through an integrated structure.
The two end parts of the spring 3 are smooth fillets prepared by adopting an argon arc welding process. The two ends of the traditional spring 3 can leave sharp cutting edges after being ground by a grinding machine, and chamfering is required to be ground, otherwise, the spring 3 can scratch the telescopic ring in the process of being mounted on the front shaft seal.
The inner side of the base 11 is provided with a first limit terminal 112, the inner side of the top seat 13 is provided with a second limit terminal 113, and two ends of the spring 3 are respectively arranged in a limit mode through the first limit terminal 112 and the second limit terminal 113.
The top of the rotating ring 6 is flush with the end surface of the top seat 13.
The working principle of the utility model is as follows:
The utility model is arranged on a motor main shaft 14, one end of a telescopic ring 1 is tightly attached to the end face of a motor 9 and the end face, the other end of the telescopic ring 1 is tightly attached to an impeller 10 through a rotating ring 6, after the impeller 10 is fixed by a locking screw, the telescopic ring 1 with a spring 3 is elastically compressed to form a tight seal between a fixed ring and the rotating ring, and as the end parts of the two ends of the spring 3 are smooth rounding structures 31 prepared by adopting an argon arc welding process, the spring 3 cannot damage a base 11, a telescopic part 12 and a top seat 13 which are made of elastic materials.
In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", etc. refer to the directions or positional relationships based on those shown in the drawings, and are merely for clarity and convenience of description of the expression technical solution, and thus should not be construed as limiting the present utility model.
In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a list of elements is included, and may include other elements not expressly listed.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. The shaft sealing structure of the centrifugal pump comprises a telescopic ring (1), wherein the telescopic ring (1) comprises a base (11) and a top seat (13) connected with the base (11) through a telescopic part (12);
A first annular groove (111) is formed along the inner surface of the base (11), and a first sealing ring (2) is arranged in the first annular groove (111); the top seat (13) is connected with the other end of the telescopic part (12), a second annular groove (4) is formed in the inner surface of the top seat (13), a second sealing ring (5) is installed in the second annular groove (4), an open groove (8) is formed in the outer surface of the top seat (13), a rotating ring (6) is installed in the open groove (8), and a sealing gasket (7) is arranged between the rotating ring (6) and the bottom of the open groove (8);
The telescopic device is characterized in that one end of the telescopic part (12) is connected with the base (11), the main body of the telescopic part (12) is of a wave-shaped structure, the spring (3) is arranged in the telescopic part (12), the end parts of the two ends of the spring (3) are of round-corner structures (31), and the two ends of the spring (3) are respectively arranged on the inner side surfaces of the base (11) and the top seat (13) in a limiting mode through the round-corner structures (31).
2. The centrifugal pump shaft seal structure according to claim 1, wherein the base (11), the telescopic part (12) and the top seat (13) are made of elastic materials, and the base (11), the telescopic part (12) and the top seat (13) are connected by adopting an integrated structure.
3. The centrifugal pump shaft seal structure according to claim 1, wherein the two end parts of the spring (3) are smooth fillets prepared by an argon arc welding process.
4. The centrifugal pump shaft seal structure according to claim 1, wherein the inner side surface of the base (11) is provided with a first limit terminal (112), the inner side surface of the top seat (13) is provided with a second limit terminal (113), and two ends of the spring (3) are respectively arranged in a limiting manner through the first limit terminal (112) and the second limit terminal (113).
5. The centrifugal pump shaft seal structure according to claim 1, wherein the top of the rotating ring (6) is flush with the end face of the top seat (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322370011.6U CN221074722U (en) | 2023-09-01 | 2023-09-01 | Pump shaft seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322370011.6U CN221074722U (en) | 2023-09-01 | 2023-09-01 | Pump shaft seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221074722U true CN221074722U (en) | 2024-06-04 |
Family
ID=91250530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322370011.6U Active CN221074722U (en) | 2023-09-01 | 2023-09-01 | Pump shaft seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221074722U (en) |
-
2023
- 2023-09-01 CN CN202322370011.6U patent/CN221074722U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |