CN114320966A

CN114320966A - A mechanical seal structure for a fan

Info

Publication number: CN114320966A
Application number: CN202111640778.5A
Authority: CN
Inventors: 黄炳喜; 黄亚男; 杨浩; 刘东光
Original assignee: Anhui Yalan Seal Co ltd
Current assignee: Anhui Yalan Seal Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-04-12

Abstract

The invention discloses a mechanical sealing structure for a fan, which comprises a sealing cover, wherein the sealing cover comprises an end cover and a base, the end cover and the base are fixed through a plurality of first cylindrical head screws in a threaded mode, a shaft sleeve used for fixing a rotating shaft of the fan is arranged in the center of the end cover and the center of the base, a sealing cavity filled with sealing blocking liquid is arranged in the sealing cover, a pumping ring used for accelerating the flow of the sealing blocking liquid is arranged in the sealing cavity, and moving ring assemblies used for driving the pumping ring to move are arranged on two sides of the pumping ring. According to the invention, the pumping ring rotating along with the rotating shaft of the fan is arranged in the sealing cavity, the pumping ring rotates and stirs the blocking liquid in the sealing cavity, so that the flow rate of the blocking liquid is accelerated and the blocking liquid is discharged from the oil outlet on the base, the temperature in the sealing cavity is transmitted out along with the blocking liquid under the conduction of the high-flow-rate blocking liquid, the heat dissipation capacity of the sealing cavity is improved, and the normal use of the sealing structure is ensured.

Description

Mechanical seal structure for fan

Technical Field

The invention relates to the technical field of fans, in particular to a mechanical sealing structure for a fan.

Background

The mechanical seal is a common seal form and is widely applied to various fans. Mechanical seal belongs to the contact and seals, and the heat that its mutual friction produced when the operation need be taken away through liquid, and current glass steel fan seal chamber space size is little, and sealed frictional heat makes the temperature rise in the seal chamber too fast, has influenced the damage that can lead to glass steel fan when sealed effect.

Disclosure of Invention

The invention aims to provide a mechanical sealing structure for a fan, which solves the following technical problems: the heat dissipation effect in the sealing cavity in the mechanical sealing structure is poor.

The purpose of the invention can be realized by the following technical scheme:

a mechanical sealing structure for a fan comprises a sealing cover, wherein the sealing cover comprises an end cover and a base, the end cover and the base are fixed through a plurality of first cylindrical head screws in a threaded mode, shaft sleeves used for fixing a rotating shaft of the fan are arranged in the centers of the end cover and the base, a sealing cavity filled with sealing blocking liquid is arranged in the sealing cover, a pumping ring used for accelerating the flow of the sealing blocking liquid is arranged in the sealing cavity, moving ring assemblies used for driving the pumping ring to move are arranged on two sides of the pumping ring, and an inner static ring assembly and an outer static ring assembly used for preventing the leakage of the sealing blocking liquid are arranged in the sealing cavity; the movable ring assembly comprises a movable ring and a movable ring seat fixedly installed on one side of the movable ring, the pumping ring is respectively fixed on the movable ring seats of the two movable ring assemblies through a plurality of pins, and the pumping ring is fixed on the shaft sleeve through a plurality of pins.

As a further scheme of the invention, the inner stationary ring assembly comprises an inner stationary ring and an inner stationary ring seat fixedly arranged on one side of the inner stationary ring, the inner stationary ring seat is fixed on one side of the base through a plurality of inner pins, inner springs are fixedly arranged in a plurality of buffer grooves formed in the base, the end parts of the inner springs are in butt fit with the inner stationary ring seat, and a movable ring on the movable ring assembly close to one side of the base is in sliding connection with the inner stationary ring.

As a further scheme of the invention, a plurality of inner pins and a plurality of inner springs are arranged in a staggered mode in equal radian, an inner static ring rubber ring is arranged between the inner static ring seat and the base, and the inner static ring rubber ring is sleeved on the inner static ring seat.

As a further scheme of the invention, the outer stationary ring assembly comprises an outer stationary ring and an outer stationary ring seat fixedly arranged on one side of the outer stationary ring, the outer stationary ring seat is fixed on one side of the end cover through a plurality of outer pins, outer springs are fixedly arranged in a plurality of buffer grooves formed in the end cover, the end parts of the outer springs are in butt fit with the outer stationary ring seat, and a movable ring on the movable ring assembly close to one side of the end cover is in sliding connection with the outer stationary ring.

As a further scheme of the invention, a plurality of outer pins and a plurality of outer springs are arranged in a staggered mode in equal radian, an outer static ring rubber ring is arranged between the outer static ring seat and the end cover, and the outer static ring rubber ring is sleeved on the outer static ring seat.

As a further scheme of the invention, moving ring rubber rings are arranged between the moving ring seats of the two moving ring assemblies and the shaft sleeve, and the two moving ring rubber rings are sleeved on the shaft sleeve.

As a further scheme of the invention, an oil outlet for blocking the outflow of the sealing liquid is formed in the base, an oil inlet for blocking the inflow of the sealing liquid is formed in the end cover, and both the oil outlet and the oil inlet are communicated with the sealing cavity.

As a further scheme of the invention, a fixing ring arranged on one side of the shaft sleeve is fixed on the end part of the shaft sleeve through a plurality of locking screws, a plurality of assembling clamps are arranged between the fixing ring and the end cover, and the assembling clamps are all fixed on the end cover through second cylindrical head screws.

As a further scheme of the invention, a cavity rubber ring is arranged between the end cover and the base, and the cavity rubber ring is sleeved on the base.

As a further scheme of the invention, a sealing gasket is sleeved on one side of the base, which is far away from the end cover, a plurality of shaft sleeve rubber rings are arranged in a plurality of fixing grooves formed in the shaft sleeve, and the shaft sleeve rubber rings are all sleeved on the rotating shaft of the fan.

The invention has the beneficial effects that:

according to the mechanical sealing structure for the fan, the pumping ring rotating along with the rotating shaft of the fan is arranged in the sealing cavity, the pumping ring rotates and stirs the blocking liquid in the sealing cavity, so that the flow rate of the blocking liquid is accelerated and the blocking liquid is discharged from the oil outlet on the base, the temperature in the sealing cavity is transmitted out along with the blocking liquid under the conduction of the high-flow-rate blocking liquid, the heat dissipation capacity of the sealing cavity is improved, and the normal use of the sealing structure is ensured.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of a mechanical seal structure for a blower according to the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is an enlarged view at B in fig. 2.

In the figure: 1. a fixing ring; 2. locking the screw; 3. a second cap screw; 4. assembling the card; 5. a shaft sleeve; 6. an end cap; 61. an outer spring; 7. an outer stationary ring assembly; 71. an outer stationary ring; 72. an outer stationary ring seat; 8. a rotating ring assembly; 81. a moving ring; 82. a movable ring seat; 9. a pumping ring; 10. a base; 101. an inner spring; 11. an inner stationary ring assembly; 111. an inner stationary ring; 112. an inner stationary ring seat; 12. sealing gaskets; 13. sealing the cavity; 14. an inner stationary ring rubber ring; 15. a shaft sleeve rubber ring; 16. a movable ring rubber ring; 17. a cavity rubber ring; 18. an outer stationary ring rubber ring; 19. a first cap screw; 20. an oil outlet; 21. and an oil inlet.

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.

Referring to fig. 1-3, the present invention is a mechanical sealing structure for a fan, including a sealing cover, the sealing cover includes an end cover 6 and a base 10, the end cover 6 and the base 10 are fixed by a plurality of first cylindrical screws 19, the heads of the plurality of first cylindrical screws 19 face one side of the end cover 6, the end cover 6 is arranged at the outer side, i.e. the atmosphere side, the base 10 is arranged at the inner side, i.e. the side facing the fan, a shaft sleeve 5 is arranged at the center of the end cover 6 and the base 10 for fixing the rotating shaft of the fan, a sealing cavity 13 filled with sealing liquid is arranged in the sealing cover, a pumping ring 9 for accelerating the flow of the sealing liquid is arranged in the sealing cavity 13, a moving ring assembly 8 for driving the pumping ring 9 to move is arranged at both sides of the pumping ring 9, an inner stationary ring assembly 11 and an outer stationary ring assembly 7 for preventing the sealing liquid from leaking are arranged in the sealing cavity 13, the inner stationary ring assembly 11 is arranged at the side close to the base 10, the outer static ring component 7 is arranged at one side close to the end cover 6;

referring to fig. 2 and 3, the moving ring assembly 8 includes a moving ring 81 and a moving ring seat 82, the moving ring 81 is fixedly installed on one side of the moving ring seat 82, the pumping ring 9 is fixed on the moving ring seats 82 of the two moving ring assemblies 8 through a plurality of pins, a moving ring rubber ring 16 is arranged between the moving ring seat 82 of the two moving ring assemblies 8 and the shaft sleeve 5, the shaft sleeve 5 is sleeved with the two moving ring rubber rings 16, the moving ring rubber ring 16 is arranged to prevent external fluid from flowing into the sealing cavity 13 to cause pollution to the sealing cavity 13, and the pumping ring 9 is fixed on the shaft sleeve 5 through a plurality of pins.

Referring to fig. 2 and 3, the inner stationary ring assembly 11 includes an inner stationary ring 111, the inner stationary ring 111 is fixedly installed on one side of an inner stationary ring seat 112, the inner stationary ring seat 112 is fixed on one side of the base 10 through a plurality of inner pins, inner springs 101 are fixedly installed in a plurality of buffer slots formed in the base 10, the end portions of the inner springs 101 are in abutting fit with the inner stationary ring seat 112, the inner pins and the inner springs 101 are arranged in an alternating manner in equal radian, an inner stationary ring rubber ring 14 is arranged between the inner stationary ring seat 112 and the base 10, the inner stationary ring rubber ring 14 is sleeved on the inner stationary ring seat 112, the arranged inner stationary ring rubber ring 14 prevents sealing liquid from leaking out from a gap between the inner stationary ring seat 112 and the base 10, and a movable ring 81 on the movable ring assembly 8 close to one side of the base 10 is slidably connected with the inner stationary ring 111;

referring to fig. 2 and 3, the outer stationary ring assembly 7 includes an outer stationary ring 71, the outer stationary ring 71 is fixedly installed on one side of an outer stationary ring seat 72, the outer stationary ring seat 72 is fixed on one side of the end cover 6 through a plurality of outer pins, outer springs 61 are fixedly installed in a plurality of buffer slots formed in the end cover 6, the end portions of the outer springs 61 are in abutting fit with the outer stationary ring seat 72, the outer pins and the outer springs 61 are arranged in an arc-staggered manner, outer stationary ring rubber rings 18 are arranged between the outer stationary ring seat 72 and the end cover 6, the outer stationary ring rubber rings 18 are sleeved on the outer stationary ring seat 72, the arranged outer stationary ring rubber rings 18 prevent sealing liquid from leaking out from gaps between the outer stationary ring seat 72 and the end cover 6, the inner stationary ring rubber rings 14 and the outer stationary ring rubber rings 18 have the same structure and are made of butyronitrile, and the movable ring 81 on the movable ring assembly 8 close to one side of the end cover 6 is connected with the outer stationary ring in a sliding manner; when the fan axis of rotation rotates, pump ring 9 and rotating ring subassembly 8 rotate along with it, the vibration transmission that the fan axis of rotation produced is to the rotating ring 81 of two rotating ring subassemblies 8, one of them rotating ring 81 can cushion through a plurality of interior springs 101 that set up on the base 10, another rotating ring 81 can cushion through a plurality of exterior springs 61 that set up on the end cover 6, the noise that vibration and vibration that the fan axis of rotation produced have been cushioned to a plurality of interior springs 101 and exterior springs 61 that both sides set up.

Referring to fig. 1 and 2, an oil outlet 20 for blocking the outflow of the sealing liquid is formed in the base 10, an oil inlet 21 for blocking the inflow of the sealing liquid is formed in the end cover 6, and both the oil outlet 20 and the oil inlet 21 are communicated with the sealing cavity 13; a fixing ring 1 is arranged on one side of the shaft sleeve 5, the fixing ring 1 is fixed at the end part of the shaft sleeve 5 through a plurality of locking screws 2, a plurality of assembling cards 4 are arranged between the fixing ring 1 and the end cover 6, and the assembling cards 4 are all fixed on the end cover 6 through second cylindrical head screws 3; be provided with cavity rubber ring 17 between end cover 6 and the base 10, cavity rubber ring 17 cover is located on the base 10, and base 10 keeps away from end cover 6 one side and still overlaps and be equipped with seal gasket 12, all is provided with axle sleeve rubber ring 15 in a plurality of fixed slots of seting up on the axle sleeve 5, and a plurality of axle sleeve rubber rings 15 all overlap and locate in the fan axis of rotation.

This sealing mechanism is when using, to hinder the sealing liquid and carry to the seal chamber 13 in through oil inlet 21, the fan axis of rotation drives the rotating ring subassembly 8 rotation of pump sending ring 9 and pump sending ring 9 both sides through axle sleeve 5, pump sending ring 9 stirs the interior sealing liquid that hinders of seal chamber 13, make to hinder the sealing liquid velocity of flow and accelerate and discharge from oil-out 20 on the base 10, the temperature in the seal chamber 13 is along with hindering the sealing liquid transmission and going out under the conduction of the sealing liquid that hinders of high velocity of flow, the heat-sinking capability of seal chamber 13 has been improved, seal structure's normal use has been guaranteed.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like 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 directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims

1. A mechanical sealing structure for a fan, characterized in that it comprises a sealing cover, and the sealing cover comprises an end cover (6) and a base (10), and a number of passages are passed between the end cover (6) and the base (10). The first cylindrical head screw (19) is threadedly fixed, the center of the end cover (6) and the base (10) is provided with a shaft sleeve (5) for fixing the rotating shaft of the fan, and the sealing cover is provided with a sealing cover filled with a sealing liquid. A sealing cavity (13) is provided with a pumping ring (9) for accelerating the flow of the blocking liquid, and both sides of the pumping ring (9) are provided with a pumping ring (9) for driving the pumping ring (9) A moving moving ring assembly (8), the sealing cavity (13) is provided with an inner static ring assembly (11) and an outer static ring assembly (7) for preventing leakage of the blocking liquid; the moving ring assembly (8) It comprises a moving ring (81) and a moving ring seat (82) fixedly mounted on one side of the moving ring (81), the pumping ring (9) is respectively fixed to the moving rings of the two moving ring assemblies (8) through several pins On the seat (82), the pumping ring (9) is fixed on the shaft sleeve (5) by several pins.

2 . The mechanical seal structure for a fan according to claim 1 , wherein the inner static ring assembly ( 11 ) comprises an inner static ring ( 111 ) and a An inner stationary ring seat (112), the inner stationary ring seat (112) is fixed to one side of the base (10) by a plurality of inner pins, and inner springs ( 101), the ends of several of the inner springs (101) are in abutment with the inner stationary ring seat (112), and the movable ring (81) on the movable ring assembly (8) on the side close to the base (10) is connected to the inner stationary ring seat (112). The ring (111) is slidably connected.

3. The mechanical seal structure for a fan according to claim 2, characterized in that, a plurality of the inner pins and a plurality of inner springs (101) are arranged in a staggered arc, and the inner static ring seat (112) and the base ( 10) An inner static ring rubber ring (14) is arranged between, and the inner static ring rubber ring (14) is sleeved on the inner static ring seat (112).

4. The mechanical seal structure for a fan according to claim 1, wherein the outer stationary ring assembly (7) comprises an outer stationary ring (71) and a An outer static ring seat (72), the outer static ring seat (72) is fixed to one side of the end cover (6) by a plurality of outer pins, and a plurality of buffer grooves opened on the end cover (6) are fixedly installed with external Springs (61), the ends of a plurality of the outer springs (61) are in contact with the outer stationary ring seat (72), and the moving ring (81) on the moving ring assembly (8) on the side close to the end cover (6) It is slidably connected with the outer static ring (71).

5. The mechanical seal structure for a fan according to claim 4, characterized in that a plurality of the outer pins and a plurality of outer springs (61) are arranged in a staggered arc, the outer static ring seat (72) and the end cover An outer static ring rubber ring (18) is arranged between (6), and the outer static ring rubber ring (18) is sleeved on the outer static ring seat (72).

6 . The mechanical seal structure for a fan according to claim 1 , wherein a moving ring seat ( 82 ) and the shaft sleeve ( 5 ) of the two moving ring assemblies ( 8 ) are each provided with a moving ring seat ( 82 ). 7 . A ring rubber ring (16), the two movable ring rubber rings (16) are sleeved on the shaft sleeve (5).

7 . The mechanical seal structure for a fan according to claim 1 , wherein the base ( 10 ) is provided with an oil outlet ( 20 ) for the outflow of the blocking liquid, and the end cover ( 6 ) An oil inlet (21) for the inflow of the blocking liquid is opened on the upper part, and the oil outlet (20) and the oil inlet (21) are both communicated with the sealing cavity (13).

8 . The mechanical seal structure for a fan according to claim 1 , wherein the fixing ring ( 1 ) provided on one side of the shaft sleeve ( 5 ) is fixed to the shaft sleeve ( 1 ) through a plurality of locking screws ( 2 ). 5) At the end, several cartridges (4) are arranged between the fixing ring (1) and the end cover (6), and several of the cartridges (4) are fixed by the second cylinder head screws (3). on the end cap (6).

9 . The mechanical seal structure for a fan according to claim 1 , wherein a cavity rubber ring ( 17 ) is arranged between the end cover ( 6 ) and the base ( 10 ), and the cavity rubber The ring (17) is sleeved on the base (10).

10 . The mechanical seal structure for a fan according to claim 1 , wherein a sealing gasket ( 12 ) is sleeved on the side of the base ( 10 ) away from the end cover ( 6 ), and the shaft sleeve ( 10 ). 5) A plurality of fixing grooves opened on the upper part are all provided with shaft sleeve rubber rings (15), and several of the shaft sleeve rubber rings (15) are sleeved on the rotating shaft of the fan.