CN220151593U - Centrifugal pump sealing device - Google Patents
Centrifugal pump sealing device Download PDFInfo
- Publication number
- CN220151593U CN220151593U CN202321705377.8U CN202321705377U CN220151593U CN 220151593 U CN220151593 U CN 220151593U CN 202321705377 U CN202321705377 U CN 202321705377U CN 220151593 U CN220151593 U CN 220151593U
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- centrifugal pump
- sealing
- ring
- gland
- 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 title claims abstract description 102
- 210000004907 gland Anatomy 0.000 claims abstract description 28
- 230000007423 decrease Effects 0.000 claims description 6
- 238000012856 packing Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 5
- 239000000945 filler Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance 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 sealing device, which comprises a gland, a first sealing ring and a second sealing ring, wherein a through hole is formed in the center of the gland, a pump shaft penetrates through the through hole, the first sealing ring is fixedly connected with the bottom of the gland, the first sealing ring is sleeved on the outer surface of the pump shaft, a first magnetic part is arranged on one side, far away from the gland, of the first sealing ring, the second sealing ring is sleeved on the outer surface of the pump shaft, a second magnetic part is arranged on one side, close to the first sealing ring, of the second sealing ring, and the first magnetic part and the second magnetic part are magnetically repelled. The centrifugal pump sealing device provided by the utility model has the advantages of good sealing performance and convenience in replacement and overhaul.
Description
Technical Field
The utility model relates to the technical field of gland, in particular to a centrifugal pump sealing device.
Background
The shaft seal part of the centrifugal pump mainly comprises filler: packing, packing ring, packing clamping ring, packing pressure disk are constituteed, and the main effect at bearing seal position is played sealed effect, stops high-pressure rivers and spouts from the pump body inside and cause the pollution to the bearing room, causes the bearing high temperature unusual. The packing ring and the packing gland at the shaft seal of the centrifugal pump of the pump room are not integrated. In daily operation of the centrifugal pump, due to abrasion of packing, the packing gland can be continuously screwed inwards, so that water flow is prevented from being sprayed out. Therefore, the packing press ring is extruded into the packing chamber, the packing press ring does not have proper prying force points, and is difficult to take out, so that great difficulty is increased for the work of replacing packing materials. If the packing is not replaced in time, the centrifugal pump is difficult to fill water, the centrifugal pump cannot be started, and drainage accidents are caused.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the utility model provides the centrifugal pump sealing device which has the advantages of good sealing performance and convenience in replacement and overhaul.
According to the centrifugal pump sealing device provided by the embodiment of the utility model, the centrifugal pump sealing device comprises the gland, the first sealing ring and the second sealing ring, the center of the gland is provided with the through hole, the pump shaft penetrates through the through hole, the first sealing ring is fixedly connected with the bottom of the gland, the first sealing ring is sleeved on the outer surface of the pump shaft, the first magnetic part is arranged on one side of the first sealing ring, which is far away from the gland, the second sealing ring is sleeved on the outer surface of the pump shaft, the second magnetic part is arranged on one side of the second sealing ring, which is adjacent to the first sealing ring, and the first magnetic part and the second magnetic part are magnetically repelled.
The centrifugal pump sealing device provided by the embodiment of the utility model has the advantages of good sealing performance and convenience in replacement and overhaul. The utility model realizes the multilayer sealing of the sealing ring through the magnetic part and realizes the quick disassembly and assembly through the magnetic attraction and repulsion.
In some embodiments, an annular inclined section is provided at the bottom of the second seal ring, the inclined section abutting the pump shaft.
In some embodiments, the cross-sectional width of the sloped segment decreases with increasing distance from the gland.
In some embodiments, the diameter of the pump shaft increases to a fixed value as the cross-sectional width of the annular sloped segment decreases.
In some embodiments, the centrifugal pump sealing device further comprises a connector, a first end of the connector being connected to the first seal ring through a second seal ring, a second end of the connector being located within the second seal ring and slidably connected to the second seal ring.
In some embodiments, the second sealing ring is provided with a sliding cavity, the second end of the connecting piece is sleeved with an elastic piece, one end of the elastic piece is abutted to the sliding cavity, and the other end of the elastic piece is fixedly connected with the second end of the connecting piece.
In some embodiments, the first end of the connection is threadably connected to the first seal ring.
In some embodiments, a gasket is disposed between the first seal ring and the second seal ring, the gasket having a width that is the same as a width of the first seal ring.
In some embodiments, the gasket is a rubber gasket.
Drawings
Fig. 1 is a schematic structural view of a centrifugal pump sealing device according to an embodiment of the present utility model.
FIG. 2 is an enlarged view of a portion of FIG. 2
Reference numerals: 1. a gland; 2. a pump shaft; 3. a first seal ring; 4. a second seal ring; 5. a first magnetic member; 6. a second magnetic member; 7. an inclined section; 8. a connecting piece; 9. an elastic member.
Detailed Description
Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
According to the centrifugal pump sealing device disclosed by the embodiment of the utility model, as shown in fig. 1 and 2, the centrifugal pump sealing device comprises a gland, a first sealing ring and a second sealing ring, a through hole is formed in the center of the gland, the pump shaft penetrates through the through hole, the first sealing ring is fixedly connected with the bottom of the gland, the first sealing ring is sleeved on the outer surface of the pump shaft, a first magnetic part is arranged on one side, away from the gland, of the first sealing ring, the second sealing ring is sleeved on the outer surface of the pump shaft, a second magnetic part is arranged on one side, adjacent to the first sealing ring, of the second sealing ring, and the first magnetic part and the second magnetic part are magnetically repelled. The gland is fixed to link to each other with first sealing ring, is convenient for take out packing clamping ring and changes the filler, and second sealing ring and first sealing ring magnetism repel, and along with the fastening of gland first sealing ring follow the gland pushes down, second sealing ring and first sealing ring magnetism repel consequently the second sealing ring continue to descend and improve the leakproofness, when needing to change the filler, take off the gland, and first sealing ring follows the gland and takes off, adopts strong magnet to adsorb the second sealing ring come, need not the impetus and prizes out the second sealing ring, and convenient change has improved maintenance efficiency.
The centrifugal pump sealing device provided by the embodiment of the utility model has the advantages of good sealing performance and convenience in replacement and overhaul.
In some embodiments, an annular beveled segment is provided at the bottom of the second seal ring, the beveled segment abutting the pump shaft.
Specifically, the annular inclined section is provided with an inclined surface which is in contact with the pump shaft, and due to the effect of the inclined surface, the annular inclined section has a sealing effect in the vertical direction on the pump shaft, and can also play a role in improving the sealing effect on the acting force in the horizontal direction on the pump shaft.
In some embodiments, the cross-sectional width of the angled section decreases with increasing distance from the gland.
Specifically, the width of the inclined segment is reduced along with the increase of the distance from the gland, so that the width of the inclined segment is narrowed, when the inclined segment is worn, the first part with the narrower bottom width is worn out, and the wider part of the inclined segment is pushed by the second sealing ring to continuously descend into the part, so that the sealing performance can be ensured, and leakage is avoided.
In some embodiments, the diameter of the pump shaft increases to a fixed value as the cross-sectional width of the annular sloped segment decreases.
Specifically, the diameter of one end of the pump shaft, which is attached to the annular inclined section, is changed from small to large to a fixed value, so that the tightness of the attachment of the pump shaft and the annular inclined section can be ensured, and along with the relative movement of the annular inclined section to the pump shaft, the annular inclined section always keeps close attachment of the pump shaft, so that the sealing performance is ensured.
In some embodiments, the centrifugal pump sealing device further comprises a connector having a first end connected to the first seal ring through the second seal ring and a second end positioned within and slidably connected to the second seal ring.
Specifically, the connecting piece can be used for fixedly connecting the first sealing ring and the second sealing ring, so that the distance between the second sealing ring and the first sealing ring is prevented from being too large, and the second sealing ring can be taken out conveniently. The connecting piece can slide up and down in the second sealing ring, so that the distance between the second sealing ring and the first sealing ring can be adjusted.
In some embodiments, the second sealing ring is provided with a sliding cavity, the second end of the connecting piece is sleeved with an elastic piece, one end of the elastic piece is abutted with the sliding cavity, and the other end of the elastic piece is fixedly connected with the second end of the connecting piece.
Specifically, a sliding cavity is arranged in the second sealing ring, the sliding cavity limits the second end of the connecting piece to be separated from the second sealing ring, and the connecting piece can slide up and down in the sliding cavity. The elastic piece can be a spring, the spring is sleeved on the connecting piece, one end of the spring is fixedly connected with the second end of the connecting piece, and the other end of the spring is connected with the sliding cavity. When the second sealing ring moves in the direction away from the first sealing ring, the distance between the sliding cavity and the second end of the connecting piece is reduced, the spring is extruded, the spring pushes the sliding cavity to reset, and the vibration of the second sealing ring can be weakened and the distance between the second sealing ring and the first sealing ring can be restrained.
In some embodiments, the first end of the connection is threadably coupled to the first seal ring.
Specifically, the first end and the first sealing ring threaded connection of connecting piece, the first end of connecting piece sets up the external screw thread, sets up the locating hole that has the internal screw thread on the first sealing ring, and the connecting piece gets into the locating hole and threaded connection is fixed and is conveniently changed the second sealing ring.
In some embodiments, a gasket is disposed between the first seal ring and the second seal ring, the gasket having a width that is the same as a width of the first seal ring.
Specifically, the gasket is arranged between the first sealing ring and the second sealing ring, the sealing performance of the area between the two sealing rings can be improved, and a liquid film is formed between the gasket and the sealing rings to protect the sealing rings.
In some embodiments, the gasket is a rubber gasket.
Specifically, the rubber gasket has certain elasticity and can bear certain pressure, the sealing performance of the pump shaft is good, and the gasket is damaged and is convenient to replace.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (9)
1. A centrifugal pump sealing device, comprising:
a through hole is formed in the center of the gland, and the pump shaft penetrates through the through hole;
the first sealing ring is fixedly connected with the bottom of the gland, the first sealing ring is sleeved on the outer surface of the pump shaft, and a first magnetic piece is arranged on one side, far away from the gland, of the first sealing ring;
the second sealing ring is sleeved on the outer surface of the pump shaft, a second magnetic piece is arranged on one side, adjacent to the first sealing ring, of the second sealing ring, and the first magnetic piece and the second magnetic piece are magnetically repelled.
2. The centrifugal pump sealing device of claim 1, wherein an annular inclined section is provided at the bottom of the second seal ring, the inclined section abutting the pump shaft.
3. A centrifugal pump sealing arrangement according to claim 2, wherein the cross-sectional width of the inclined section decreases with increasing distance from the gland.
4. The centrifugal pump sealing device of claim 2, wherein the diameter of the pump shaft increases to a fixed value as the cross-sectional width of the annular inclined section decreases.
5. The centrifugal pump seal of claim 1, further comprising a connector having a first end connected to the first seal ring through a second seal ring, the second end of the connector being positioned within and slidably connected to the second seal ring.
6. The centrifugal pump sealing device according to claim 5, wherein the second sealing ring is provided with a sliding cavity, the second end of the connecting piece is sleeved with an elastic piece, one end of the elastic piece is abutted to the sliding cavity, and the other end of the elastic piece is fixedly connected with the second end of the connecting piece.
7. The centrifugal pump sealing device of claim 5, wherein the first end of the connector is threadably connected to the first seal ring.
8. The centrifugal pump sealing device according to claim 1, wherein a gasket is provided between the first seal ring and the second seal ring, the gasket having the same width as the first seal ring.
9. The centrifugal pump sealing device of claim 8, wherein the gasket is a rubber gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705377.8U CN220151593U (en) | 2023-06-30 | 2023-06-30 | Centrifugal pump sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705377.8U CN220151593U (en) | 2023-06-30 | 2023-06-30 | Centrifugal pump sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220151593U true CN220151593U (en) | 2023-12-08 |
Family
ID=89007411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321705377.8U Active CN220151593U (en) | 2023-06-30 | 2023-06-30 | Centrifugal pump sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220151593U (en) |
-
2023
- 2023-06-30 CN CN202321705377.8U patent/CN220151593U/en active Active
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