CN213540818U - Sealing structure and high-speed centrifugal water pump - Google Patents
Sealing structure and high-speed centrifugal water pump Download PDFInfo
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- CN213540818U CN213540818U CN202022193744.3U CN202022193744U CN213540818U CN 213540818 U CN213540818 U CN 213540818U CN 202022193744 U CN202022193744 U CN 202022193744U CN 213540818 U CN213540818 U CN 213540818U
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Abstract
The utility model discloses a sealing structure and a high-speed centrifugal water pump, wherein the sealing structure comprises a rotating shaft, a shell body, two mechanical sealing components and an adjusting structure, wherein the shell sleeve body is sleeved on the periphery of the rotating shaft, a sealing space is formed between the shell sleeve body and the rotating shaft, the two mechanical sealing components are arranged in the sealing space and distributed along the axial direction of the rotating shaft, the moving rings of the two mechanical sealing components are adjacent and oppositely arranged, the adjusting structure is arranged between the two moving rings, used for respectively correspondingly adjusting the pre-tightening positions of the two movable rings, the shell body and the rotating shaft form a sealed space, two mechanical seal assemblies are arranged in the seal space along the axial direction of the rotating shaft, so that when one mechanical seal assembly fails, the seal structure can normally work, thereby the stability of seal structure has been increased, adopts double mechanical seal simultaneously also to strengthen seal structure's sealed effect.
Description
Technical Field
The utility model relates to a centrifugal pump seals technical field, in particular to high-speed centrifugal water pump with seal structure.
Background
The present method for sealing the shaft of centrifugal pump includes packing seal, mechanical seal, etc., the packing seal is realized by the tight contact of packing and the external surface of the shaft, the mechanical seal is a device for preventing fluid leakage, which is formed by at least a pair of end faces perpendicular to the rotation axis, keeping the contact and relative sliding under the action of fluid pressure and the elastic force (or magnetic force) of compensation mechanism and the cooperation of auxiliary seal, and it utilizes a pair of smooth and straight surfaces with fluid film to achieve the sealing effect by means of medium pressure and spring force. Compared with the packing seal, the mechanical seal has the advantages of good sealing effect, no abrasion of the rotating shaft, long service life, small power consumption and the like, is commonly used for the high-speed centrifugal water pump, but the existing mechanical seal has a simple structure, generally only adopts one seal, has limited sealing effect and low sealing stability, and therefore, the problem that how to strengthen the sealing performance of the high-speed centrifugal water pump needs to be solved urgently is solved.
Disclosure of Invention
The utility model aims at providing a seal structure and high-speed centrifugal water pump, aim at solving the poor problem of single mechanical seal sealing effect.
In order to achieve the above object, the utility model provides a seal structure and high-speed centrifugal water pump, include:
a rotating shaft;
the shell sleeve body is sleeved on the outer peripheral side of the rotating shaft, and a sealing space is formed between the shell sleeve body and the rotating shaft;
the two mechanical sealing assemblies are arranged in the sealing space and distributed along the axial direction of the rotating shaft, and moving rings of the two mechanical sealing assemblies are adjacent and oppositely arranged; and the number of the first and second groups,
and the adjusting structure is arranged between the two movable rings and used for respectively and correspondingly adjusting the pre-tightening positions of the two movable rings.
Optionally, the shell comprises:
the two ends of the sleeve body are arranged in an opening manner; and the number of the first and second groups,
and the two sleeve covers are sleeved on the rotating shaft, and are respectively correspondingly covered on the two end openings of the sleeve body.
Optionally, a first sealing ring is arranged between each of the two sleeve covers and the sleeve body.
Optionally, the two mechanical seal assemblies further include two stationary rings corresponding to the two moving rings, and the two stationary rings are respectively and correspondingly mounted on the two sleeve covers;
the sealing structure further comprises a second sealing ring, and the second sealing ring is arranged between the static ring and the corresponding sleeve cover.
Optionally, the adjusting structure includes an adjusting seat and an adjusting structure disposed between the adjusting seat and one of the movable rings, the adjusting seat is sleeved on the outer peripheral side of the rotating shaft and is located between the two movable rings, and the adjusting structure includes:
the adjusting sleeve is sleeved on the outer peripheral side of the adjusting seat; and the number of the first and second groups,
axial adjustment cooperation structure, including locating respectively adjust the seat with regulation portion and cooperation portion between the adjusting collar, the regulation portion select with the cooperation of the different positions of cooperation portion, in order to adjust the adjusting collar with adjust the seat and follow the axial position of pivot.
Optionally, the matching portion is an external thread arranged on the adjusting seat, and the adjusting portion is an internal thread correspondingly arranged on the adjusting sleeve.
Optionally, the number of the adjusting structures is two, and the adjusting structures are correspondingly and respectively arranged between two ends of the adjusting seat and two of the movable rings.
Optionally, the sealing structure further includes a third sealing ring, and the third sealing ring is disposed between the rotating ring and the rotating shaft.
Optionally, the shell body is provided with a water inlet hole and a water outlet hole which are communicated with the sealed space.
The utility model also provides a high-speed centrifugal water pump, high-speed centrifugal water pump includes:
a rotating shaft;
the shell sleeve body is sleeved on the outer peripheral side of the rotating shaft, and a sealing space is formed between the shell sleeve body and the rotating shaft;
the two mechanical sealing assemblies are arranged in the sealing space and distributed along the axial direction of the rotating shaft, and moving rings of the two mechanical sealing assemblies are adjacent and oppositely arranged; and the number of the first and second groups,
and the adjusting structure is arranged between the two movable rings and used for respectively and correspondingly adjusting the pre-tightening positions of the two movable rings.
The technical scheme of the utility model in, the shell body cover is located pivot periphery side the shell body with be formed with seal space between the pivot, two mechanical seal subassembly are located seal space just follows the axial distribution of pivot, two mechanical seal subassembly's movable ring is neighbouring and relative to be set up, and the adjustment structure is located two between the movable ring for correspond respectively and adjust two the pretension position of movable ring, the shell body with the pivot forms seal space follow in the seal space the pivot axial sets up two mechanical seal subassembly ensures at one of them when mechanical seal subassembly became invalid, seal structure still can normally work, thereby has increased seal structure's stability adopts dual mechanical seal also can strengthen simultaneously seal structure's sealed effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of a high-speed centrifugal water pump provided by the present invention;
fig. 2 is a schematic cross-sectional view of an embodiment of a sealing structure provided by the present invention. The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Because the existing mechanical seal has the problems of simple structure, limited sealing effect and low sealing stability, and only one seal is generally adopted.
In view of this, the utility model provides a high-speed centrifugal water pump, high-speed centrifugal water pump includes seal structure, as long as contain seal structure high-speed centrifugal water pump all is in the utility model discloses a protection scope, wherein, fig. 1 to fig. 2 are the utility model provides a seal structure's schematic structure diagram.
Referring to fig. 1 and 2, the sealing structure 100 includes a rotating shaft 1, a housing 2, two mechanical seal assemblies 3, and an adjusting structure 4, the housing 2 is sleeved on an outer periphery of the rotating shaft 1, a sealing space 11 is formed between the housing 2 and the rotating shaft 1, the two mechanical seal assemblies 3 are disposed in the sealing space 11 and distributed along an axial direction of the rotating shaft 1, moving rings 31 of the two mechanical seal assemblies 3 are disposed adjacent to and opposite to each other, and the adjusting structure 4 is disposed between the two moving rings 31 for respectively and correspondingly adjusting pre-tightening positions of the two moving rings 31.
The technical scheme of the utility model among, 2 covers of the shell body are located 1 periphery side of pivot the shell body 2 with be formed with seal space 11, two between the pivot 1 mechanical seal subassembly 3 is located seal space 11 just follows the axial distribution of pivot 1, two the rotating ring 31 of mechanical seal subassembly 3 is neighbouring and relative setting, the shell body 2 with pivot 1 forms seal space 11 follow in the seal space 11 the 1 axial of pivot sets up two mechanical seal subassembly 3 ensures at one of them when mechanical seal subassembly 3 became invalid, seal structure 100 still can normally work, thereby has increased seal structure 100's stability adopts dual mechanical seal to also strengthen simultaneously seal structure 100's sealed effect.
In order to facilitate the loading and unloading the shell body 2, the shell body 2 includes the cover body 21 and two covers 22, the casing both ends are the opening setting, two the cover 22 all overlaps and locates in the pivot 1, and two the cover 22 corresponds the lid respectively and locates the both ends opening of the cover body 21 so sets up, through the cover body 21 with the cover 22 assembles the shell body 2, it is convenient the shell body 2 is dismantled, and then convenient mechanical seal assembly 3's installation.
In order to seal the cover 22 and the sleeve body 21, in an embodiment, a first sealing ring 23 is disposed between each of the two cover 22 and the sleeve body 21, and the first sealing ring 23 is disposed between the cover 22 and the sleeve body 21, so as to prevent fluid from flowing out from between the cover 22 and the sleeve body 21, so as to seal the cover 22 and the sleeve body 21.
In order to prevent the fluid from flowing out along the stationary ring 32, the two mechanical seal assemblies 3 further include two stationary rings 32 corresponding to the two moving rings 31, and the two stationary rings 32 are respectively and correspondingly installed on the two caps 22, the seal structure 100 further includes a second seal ring 24, the second seal ring 24 is disposed between the stationary ring 32 and the corresponding cap 22, so as to seal the stationary ring 32 and the caps 22 through the second seal ring 24, thereby preventing the fluid from leaking along the stationary ring 32.
In order to facilitate the adjustment of the pressure of the movable rings 31 on the stationary ring 32, in an embodiment, the adjusting structure 4 includes an adjusting seat 41 and an adjusting structure 42 disposed between the adjusting seat 41 and one of the movable rings 31, the adjusting seat 41 is disposed on the outer peripheral side of the rotating shaft 1 and located between two movable rings 31, the adjusting structure 42 includes an adjusting sleeve 43 and an axial adjusting and matching structure, the adjusting sleeve 43 is connected to the outer peripheral side of the adjusting seat 41, the axial adjusting and matching structure includes an adjusting portion and a matching portion respectively disposed between the adjusting seat 41 and the adjusting sleeve 43, the adjusting portion selectively matches with different positions of the matching portion to adjust the positions of the adjusting sleeve 43 and the adjusting seat 41 along the axial direction of the rotating shaft 1, and is configured such that, through the adjusting portion and the matching portion respectively disposed between the adjusting seat 41 and the adjusting sleeve 43, and adjusting the positions of the adjusting sleeve 43 and the adjusting seat 41 along the axial direction of the rotating shaft 1 to adjust the pressure between the movable ring 31 and the stationary ring 32, so as to adjust the tightness of the mechanical seal assembly 3.
It should be noted that axial adjustment cooperation structure can have multiple embodiment, for example the regulation portion is a plurality of recesses that set up along the axial, the cooperation portion be with recess matched with protruding muscle, specifically, in this application, the cooperation portion is for locating adjust the external screw thread of seat 41, the regulation portion is located for corresponding the internal thread of adjusting collar 43 sets up like this, through external screw thread and internal thread's cooperation is convenient for quick adjustment adjusting collar 43 is followed with adjusting seat 41 the axial position of pivot 1.
In order to adjust the pressure of the sealing surface between the two movable rings 31 and the stationary ring 32, the two adjusting structures 42 are correspondingly disposed between the two ends of the adjusting seat 41 and the two movable rings 31, and thus, one adjusting structure 42 is disposed corresponding to each movable ring 31, and the axial position of the movable ring 31 along the rotating shaft 1 is adjusted through the adjusting structure 42 corresponding to the movable ring 31, so as to adjust the pressure of the movable ring 31 on the corresponding stationary ring 32.
In order to enhance the sealing performance between the movable ring 31 and the rotating shaft 1, the sealing structure 100 further includes a third sealing ring 25, the third sealing ring 25 is disposed between the movable ring 31 and the rotating shaft 1, and thus the third sealing ring 25 seals the movable ring 31 and the rotating shaft 1 to prevent the fluid from leaking along the axial direction of the rotating shaft, so as to enhance the sealing performance between the movable ring 31 and the rotating shaft 1.
In order to prevent the mechanical seal assembly 3 from failing due to overheating, the jacket body 2 is provided with a water inlet 51 and a water outlet 52 which are communicated with the seal space 11, so that the cooling liquid enters the seal space 11 through the water inlet 51 and the water outlet 52 to cool the stationary ring 32 and the moving ring 31, and the moving ring 31 and the stationary ring 32 are prevented from generating dry friction due to overhigh temperature, thereby preventing the mechanical seal assembly 3 from failing.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. A seal structure for a high-speed centrifugal water pump, the seal structure comprising:
a rotating shaft;
the shell sleeve body is sleeved on the outer peripheral side of the rotating shaft, and a sealing space is formed between the shell sleeve body and the rotating shaft;
the two mechanical sealing assemblies are arranged in the sealing space and distributed along the axial direction of the rotating shaft, and moving rings of the two mechanical sealing assemblies are adjacent and oppositely arranged; and the number of the first and second groups,
and the adjusting structure is arranged between the two movable rings and used for respectively and correspondingly adjusting the pre-tightening positions of the two movable rings.
2. The seal structure of claim 1, wherein the jacket body comprises:
the two ends of the sleeve body are arranged in an opening manner; and the number of the first and second groups,
and the two sleeve covers are sleeved on the rotating shaft, and are respectively correspondingly covered on the two end openings of the sleeve body.
3. The seal structure of claim 2, wherein a first seal ring is disposed between each of the two caps and the housing body.
4. The seal structure of claim 2, wherein the two mechanical seal assemblies further comprise two stationary rings corresponding to the two rotating rings, and the two stationary rings are respectively and correspondingly mounted on the two covers;
the sealing structure further comprises a second sealing ring, and the second sealing ring is arranged between the static ring and the corresponding sleeve cover.
5. The seal structure according to claim 1, wherein the adjusting structure includes an adjusting seat and an adjusting structure disposed between the adjusting seat and one of the movable rings, the adjusting seat is disposed on the outer peripheral side of the rotating shaft and is disposed between the two movable rings, and the adjusting structure includes:
the adjusting sleeve is sleeved on the outer peripheral side of the adjusting seat; and the number of the first and second groups,
axial adjustment cooperation structure, including locating respectively adjust the seat with regulation portion and cooperation portion between the adjusting collar, the regulation portion select with the cooperation of the different positions of cooperation portion, in order to adjust the adjusting collar with adjust the seat and follow the axial position of pivot.
6. The seal structure of claim 5, wherein the engagement portion is an external thread provided on the adjustment seat, and the adjustment portion is an internal thread provided on the adjustment sleeve.
7. The seal structure of claim 5, wherein said adjusting structure is provided in two, and correspondingly disposed between two ends of said adjusting seat and two of said rotating rings.
8. The seal structure of claim 1, further comprising a third seal ring disposed between the rotating ring and the shaft.
9. The seal structure of claim 1, wherein the housing body defines an inlet opening and an outlet opening in communication with the seal space.
10. A high-speed centrifugal water pump characterized by comprising the seal structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022193744.3U CN213540818U (en) | 2020-09-29 | 2020-09-29 | Sealing structure and high-speed centrifugal water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022193744.3U CN213540818U (en) | 2020-09-29 | 2020-09-29 | Sealing structure and high-speed centrifugal water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213540818U true CN213540818U (en) | 2021-06-25 |
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ID=76496431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022193744.3U Active CN213540818U (en) | 2020-09-29 | 2020-09-29 | Sealing structure and high-speed centrifugal water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213540818U (en) |
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2020
- 2020-09-29 CN CN202022193744.3U patent/CN213540818U/en active Active
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