CN210422979U - Water pump sealing device - Google Patents
Water pump sealing device Download PDFInfo
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- CN210422979U CN210422979U CN201921020094.3U CN201921020094U CN210422979U CN 210422979 U CN210422979 U CN 210422979U CN 201921020094 U CN201921020094 U CN 201921020094U CN 210422979 U CN210422979 U CN 210422979U
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Abstract
The utility model discloses a water pump sealing device, including mechanical seal structure, mechanical seal structure is including sealed rotation core and seal housing, the sealed inner wall of installing at seal housing that rotates of sealed rotation core, sealed rotation core is including sealed rotation inner core, the sealed shell of first cylindricality and the sealed strip of scraping of first spiral seal, the sealed anterior outer wall that rotates the inner core is sealed to be rotated and is installed the inner wall at the sealed shell of first cylindricality, first spiral seal scrapes a fixed connection at the outer wall of the sealed shell of first cylindricality, seal housing is including sealed sliding chamber and seal housing, the inner wall at seal housing is seted up in sealed sliding chamber to sealed sliding chamber, first spiral seal scrapes the inner wall that the strip slides and supports at sealed sliding chamber, the rear end sliding seal of the sealed shell of first cylindricality supports at the inner wall rear portion of sealed sliding chamber. The utility model discloses mechanical seal pressure can be alleviated to the positive and negative direction, better satisfying the use needs.
Description
Technical Field
The utility model relates to a mechanical seal equipment technical field specifically is a water pump sealing device.
Background
The power connecting portion of water pump is equipped with mechanical seal device usually, because the pressure of water to the sealing washer can be alleviated to the spiral rotation in-process, spiral mechanical seal device of preferred selection usually, need design for two-way rotatory the needs adopt the mechanical seal device of two-way rotatory dynamic seal when the pump, and the mechanical seal device of common area spiral strip is the unilateral rotatory dynamic seal, so need a device that can solve above-mentioned problem promptly.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a water pump sealing device to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a water pump sealing device comprises a mechanical sealing structure, wherein the mechanical sealing structure comprises a sealing rotating core and a sealing shell, and the sealing rotating core is arranged on the inner wall of the sealing shell in a sealing and rotating mode; the sealing and rotating core comprises a sealing and rotating inner core, a first cylindrical sealing shell and a first spiral sealing scraping strip, the outer wall of the front part of the sealing and rotating inner core is arranged on the inner wall of the first cylindrical sealing shell in a sealing and rotating mode, and the first spiral sealing scraping strip is fixedly connected to the outer wall of the first cylindrical sealing shell; the sealing shell comprises a sealing sliding cavity and a sealing shell body, the sealing sliding cavity is formed in the inner wall of the sealing shell body, the first spiral sealing scraping strip is supported on the inner wall of the sealing sliding cavity in a sliding mode, and the rear end of the first cylindrical sealing shell is supported on the rear portion of the inner wall of the sealing sliding cavity in a sliding and sealing mode; sealed rotation inner core includes that one-way bearing, second spiral seal scrape strip and the sealed shell of second cylindricality, one-way bearing's outer lane fixed connection is in the rear end of the sealed shell of first cylindricality, one-way bearing's inner circle fixed connection is in the rear end of the sealed strip of second spiral seal, the sealed strip sliding support of scraping of second spiral is at the inner wall of the sealed shell of first cylindricality, the rear end outer wall rotary seal of the sealed shell of second cylindricality supports the rear end inner wall at the sealed shell of first cylindricality.
Preferably, the sealed rotating core further comprises a first sealing ring, the inner wall of the first sealing ring is fixedly embedded in the outer wall of the rear portion of the first cylindrical sealing shell, and the outer wall of the first sealing ring is slidably supported on the inner wall of the rear portion of the sealed sliding cavity.
Preferably, the sealed rotation core further comprises a rotary baffle ring, the rear end of the rotary baffle ring is fixedly connected to the front end of the first cylindrical sealing shell, and the outer wall of the rotary baffle ring is rotatably clamped and supported at the rear end of the sealed sliding cavity.
Preferably, the sealed sliding cavity further comprises a rotating groove, the rotating groove is formed in the front portion of the inner wall of the sealed shell, and the outer wall of the rotating baffle ring is slidably supported on the inner wall of the rotating groove.
Preferably, the sealed inner core that rotates still includes the second sealing washer, the inner wall of second sealing washer is fixed scarf joint at the rear end outer wall of second cylindricality sealing shell, the second sealing washer rotates the support at the rear end inner wall of first cylindricality sealing shell.
Preferably, the rotary baffle ring is rotatably mounted with the rotary groove through a one-way bearing.
Compared with the prior art, the beneficial effects of the utility model are as follows:
when the mechanical sealing structure is used in a pump, after a power part of the pump drives a second cylindrical sealing shell to rotate forwards, the second cylindrical sealing shell rotates and rotates along the inner wall of the first cylindrical sealing shell through a second spiral sealing scraping strip, so that water flow in the second cylindrical sealing shell enters a space between the second cylindrical sealing shell and the first cylindrical sealing shell, and then reverse extrusion force is generated by utilizing the spiral characteristic of the second spiral sealing scraping strip, thereby relieving the sealing pressure on one side of a second sealing ring and achieving the purpose of reducing water leakage, the first cylindrical sealing shell is fixed on the inner wall of the sealing shell through a rotary retaining ring and a one-way bearing by utilizing the one-way rotation selection characteristic of the one-way bearing during the process, meanwhile, the second cylindrical sealing shell is rotatably installed with the first cylindrical sealing shell through the one-way bearing, and the first cylindrical sealing shell is kept static through the one-way bearing when the second cylindrical sealing shell rotates by utilizing the one-way selection characteristic of the one-way bearing, the first cylindrical sealing shell is driven to rotate reversely by the unidirectional rotation characteristic of the unidirectional bearing after the power part of the pump rotates reversely to drive the first cylindrical sealing shell to rotate reversely, so that the second cylindrical sealing shell and the first cylindrical sealing shell are kept relatively still, the second cylindrical sealing shell and the first cylindrical sealing shell are in a static sealing state through the second sealing ring, the sealing property between the first cylindrical sealing shell and the second cylindrical sealing shell is improved by utilizing the static sealing effect which is higher than the dynamic sealing effect, the sealing property between the first cylindrical sealing shell and the sealing sliding cavity is improved by utilizing the first sealing ring when the first cylindrical sealing shell and the sealing sliding cavity are static, the first spiral sealing scraping strip is driven to rotate reversely along the inner wall of the sealing sliding cavity when the first cylindrical sealing shell rotates reversely along the inner wall of the sealing sliding cavity, and the forward repulsive force is generated by the thread characteristic of the first spiral sealing scraping strip by the water body entering between the first cylindrical sealing shell and the sealing sliding cavity, the water pressure is alleviated under the rotary sealing condition by the first sealing ring, the water leakage amount is reduced, and the mechanical sealing performance of the water pump in the forward and reverse rotation direction is guaranteed.
Drawings
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is an exploded view of the sealing rotary core of the present invention;
fig. 3 is an exploded view of the sealing housing of the present invention;
fig. 4 is a schematic structural view of the sealing rotary inner core of the present invention.
In the figure: 1. a mechanical seal structure; 2. sealing the rotary core; 3. sealing the housing; 4. a first seal ring; 5. sealing the rotating inner core; 6. a first cylindrical seal housing; 7. a first spiral sealing wiper strip; 8. rotating the baffle ring; 9. sealing the sliding cavity; 10. sealing the housing; 11. rotating the groove; 12. a first one-way bearing; 13. a second seal ring; 14. a second spiral sealing wiper strip; 15. a second cylindrical seal housing.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like 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, and 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 therefore, should not be construed as limiting the present invention.
Referring to fig. 1-4, the present invention provides an embodiment: a water pump sealing device comprises a mechanical sealing structure 1, wherein the mechanical sealing structure 1 comprises a sealing rotating core 2 and a sealing shell 3, and the sealing rotating core 2 is arranged on the inner wall of the sealing shell 3 in a sealing and rotating mode; the sealing rotating core 2 comprises a sealing rotating inner core 5, a first cylindrical sealing shell 6 and a first spiral sealing scraping strip 7, the outer wall of the front part of the sealing rotating inner core 5 is installed on the inner wall of the first cylindrical sealing shell 6 in a sealing and rotating mode, and the first spiral sealing scraping strip 7 is fixedly connected to the outer wall of the first cylindrical sealing shell 6; the sealing shell 3 comprises a sealing sliding cavity 9 and a sealing shell body 10, the sealing sliding cavity 9 is arranged on the inner wall of the sealing shell body 10, the first spiral sealing scraping strip 7 is supported on the inner wall of the sealing sliding cavity 9 in a sliding mode, and the rear end of the first cylindrical sealing shell 6 is supported on the rear portion of the inner wall of the sealing sliding cavity 9 in a sliding and sealing mode; when the mechanical seal structure 1 is used in a pump, after the power part of the pump drives the second cylindrical seal shell 15 to rotate forward, the second cylindrical seal shell 15 rotates to work along the inner wall of the first cylindrical seal shell 6 through the second spiral seal scraping strip 14, so that water flow in the second cylindrical seal shell 15 enters a space between the second cylindrical seal shell 15 and the first cylindrical seal shell 6, the spiral characteristic of the second spiral sealing scraping strip 14 is utilized to generate reverse extrusion force, so that the sealing pressure on one side of the second sealing ring 13 is relieved, and the purpose of reducing water leakage is achieved, the unidirectional rotation selection characteristic of the unidirectional bearing 12 is utilized in the process, the first cylindrical sealing shell 6 is fixed on the inner wall of the sealing shell 10 through the rotary retaining ring 8 and the unidirectional bearing 12, meanwhile, the second cylindrical sealing shell 15 is rotatably installed with the first cylindrical sealing shell 6 through the unidirectional bearing 12, the unidirectional selection characteristic of the unidirectional bearing 12 is utilized to enable the first cylindrical sealing shell 6 to keep still through the unidirectional bearing 12 when the second cylindrical sealing shell 15 rotates, and after the power part of the pump reversely rotates to drive the first cylindrical sealing shell 6 to reversely rotate, the unidirectional rotation characteristic of the unidirectional bearing 12 is utilized to drive the first cylindrical sealing shell 6 to reversely rotate, so that the second cylindrical sealing shell 15 and the first cylindrical sealing shell 6 keep relatively still, so that the second cylindrical sealing shell 15 is in a static sealing state with the first cylindrical sealing shell 6 through the second sealing ring 13, the sealing performance between the first cylindrical sealing shell 6 and the second cylindrical sealing shell 15 is improved by utilizing the static sealing effect which is higher than the dynamic sealing effect, and in the same way, the sealing performance between the first cylindrical sealing shell 6 and the sealing shell body 10 is improved through the first sealing ring 4 when the first cylindrical sealing shell 6 and the sealing slide cavity 9 are static, when the first cylindrical sealing shell 6 rotates reversely along the inner wall of the sealing sliding cavity 9, the first spiral sealing scraping strip 7 is driven to rotate reversely along the inner wall of the sealing sliding cavity 9, the water body entering between the first cylindrical sealing shell 6 and the sealing sliding cavity 9 generates forward repulsive force by utilizing the thread characteristic of the first spiral sealing scraping strip 7, the water pressure is relieved under the rotary sealing condition by the first sealing ring 4, the water leakage amount is reduced, and the mechanical sealing performance of the water pump in the forward and reverse rotation direction is guaranteed.
The sealed rotating core 2 further comprises a first sealing ring 4, the inner wall of the first sealing ring 4 is fixedly embedded and connected to the outer wall of the rear portion of the first cylindrical sealing shell 6, the outer wall of the first sealing ring 4 is slidably supported on the inner wall of the rear portion of the sealed sliding cavity 9, the sealed rotating core 2 further comprises a rotating retaining ring 8, the rear end of the rotating retaining ring 8 is fixedly connected to the front end of the first cylindrical sealing shell 6, the outer wall of the rotating retaining ring 8 is rotatably clamped and supported at the rear end of the sealed sliding cavity 9, the sealed sliding cavity 9 further comprises a rotating groove 11, the rotating groove 11 is formed in the front portion of the inner wall of the sealing shell 10, the outer wall of the rotating retaining ring 8 is slidably supported on the inner wall of the rotating groove 11, the sealed rotating core 5 further comprises a second sealing ring 13, the inner wall of the second sealing ring 13 is fixedly embedded and connected to the outer wall of the rear end of the second cylindrical sealing shell 15, the second sealing ring 13 is rotatably supported on the inner wall of the rear end of the first.
The working principle is as follows: when the mechanical seal structure 1 is used in a pump, after a power part of the pump drives the second cylindrical seal shell 15 to rotate positively, the second cylindrical seal shell 15 rotates and rotates along the inner wall of the first cylindrical seal shell 6 through the second spiral seal scraping strip 14, so that water flow in the second cylindrical seal shell 15 enters a space between the second cylindrical seal shell 15 and the first cylindrical seal shell 6, and then reverse extrusion force is generated by utilizing the spiral characteristic of the second spiral seal scraping strip 14, thereby relieving the sealing pressure at one side of the second seal ring 13, achieving the purpose of reducing water leakage, and in the process, the unidirectional rotation selection characteristic of the unidirectional bearing 12 is utilized, so that the first cylindrical seal shell 6 is fixed on the inner wall of the seal shell 10 through the rotary retaining ring 8 and the unidirectional bearing 12, and meanwhile, the second cylindrical seal shell 15 is rotatably mounted with the first cylindrical seal shell 6 through the unidirectional bearing 12, the first cylindrical sealing shell 6 is kept static through the one-way bearing 12 when the second cylindrical sealing shell 15 rotates by utilizing the one-way selection characteristic of the one-way bearing 12, and the first cylindrical sealing shell 6 is driven to rotate reversely by utilizing the one-way rotation characteristic of the one-way bearing 12 after the power part of the pump rotates reversely to drive the first cylindrical sealing shell 6 to rotate reversely, so that the second cylindrical sealing shell 15 and the first cylindrical sealing shell 6 are kept relatively static, the second cylindrical sealing shell 15 and the first cylindrical sealing shell 6 are in a static sealing state through the second sealing ring 13, the sealing performance between the first cylindrical sealing shell 6 and the second cylindrical sealing shell 15 is improved by utilizing the static sealing effect to be higher than the dynamic sealing effect, and the sealing performance between the first cylindrical sealing shell 6 and the sealing shell 10 is improved by utilizing the first sealing ring 4 when the first cylindrical sealing shell 6 and the seal sliding cavity 9 are static, when the first cylindrical sealing shell 6 rotates reversely along the inner wall of the sealing sliding cavity 9, the first spiral sealing scraping strip 7 is driven to rotate reversely along the inner wall of the sealing sliding cavity 9, and forward repulsive force is generated by water entering between the first cylindrical sealing shell 6 and the sealing sliding cavity 9 by utilizing the thread characteristics of the first spiral sealing scraping strip 7, so that the water pressure is relieved by the first sealing ring 4 under the condition of rotary sealing, the water leakage amount is reduced, and the mechanical sealing performance of the water pump in the forward and reverse rotation direction is ensured.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A water pump sealing device comprises a mechanical sealing structure (1), and is characterized in that: the mechanical sealing structure (1) comprises a sealing rotating core (2) and a sealing shell (3), wherein the sealing rotating core (2) is arranged on the inner wall of the sealing shell (3) in a sealing and rotating mode; the sealing and rotating core (2) comprises a sealing and rotating inner core (5), a first cylindrical sealing shell (6) and a first spiral sealing scraping strip (7), the outer wall of the front part of the sealing and rotating inner core (5) is installed on the inner wall of the first cylindrical sealing shell (6) in a sealing and rotating mode, and the first spiral sealing scraping strip (7) is fixedly connected to the outer wall of the first cylindrical sealing shell (6); the sealing shell (3) comprises a sealing sliding cavity (9) and a sealing shell (10), the sealing sliding cavity (9) is formed in the inner wall of the sealing shell (10), the first spiral sealing scraping strip (7) is slidably supported on the inner wall of the sealing sliding cavity (9), and the rear end of the first cylindrical sealing shell (6) is slidably and hermetically supported on the rear portion of the inner wall of the sealing sliding cavity (9); sealed rotation inner core (5) including one-way bearing (12), the sealed strip of scraping of second spiral (14) and the sealed shell of second cylindricality (15), the outer lane fixed connection of one-way bearing (12) is in the rear end of the sealed shell of first cylindricality (6), the inner circle fixed connection of one-way bearing (12) is in the rear end of the sealed strip of scraping of second spiral (14), the sealed strip of scraping of second spiral (14) sliding support is at the inner wall of the sealed shell of first cylindricality (6), the rear end outer wall rotary seal of the sealed shell of second cylindricality (15) supports the rear end inner wall at the sealed shell of first cylindricality (6).
2. The water pump seal assembly of claim 1, wherein: sealed rotation core (2) still include first sealing washer (4), the fixed embedding of the inner wall of first sealing washer (4) is connected at the rear portion outer wall of first cylindricality sealed shell (6), the outer wall sliding support of first sealing washer (4) is at the rear portion inner wall of sealed smooth chamber (9).
3. The water pump seal assembly of claim 1, wherein: sealed rotation core (2) still include rotatory fender ring (8), the rear end fixed connection of rotatory fender ring (8) is at the front end of first cylindricality seal shell (6), the outer wall of rotatory fender ring (8) rotates the joint and supports the rear end at sealed smooth chamber (9).
4. A water pump seal assembly as claimed in claim 3, wherein: the sealed sliding cavity (9) further comprises a rotating groove (11), the rotating groove (11) is formed in the front portion of the inner wall of the sealed shell (10), and the outer wall of the rotary baffle ring (8) is slidably supported on the inner wall of the rotating groove (11).
5. The water pump seal assembly of claim 1, wherein: the sealing rotating inner core (5) further comprises a second sealing ring (13), the inner wall of the second sealing ring (13) is fixedly embedded in the outer wall of the rear end of the second cylindrical sealing shell (15), and the second sealing ring (13) is rotatably supported on the inner wall of the rear end of the first cylindrical sealing shell (6).
6. The water pump seal assembly of claim 4, wherein: the rotary retaining ring (8) is rotatably installed with the rotary groove (11) through a one-way bearing (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921020094.3U CN210422979U (en) | 2019-07-03 | 2019-07-03 | Water pump sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921020094.3U CN210422979U (en) | 2019-07-03 | 2019-07-03 | Water pump sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210422979U true CN210422979U (en) | 2020-04-28 |
Family
ID=70378568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921020094.3U Active CN210422979U (en) | 2019-07-03 | 2019-07-03 | Water pump sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210422979U (en) |
-
2019
- 2019-07-03 CN CN201921020094.3U patent/CN210422979U/en active Active
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