CN215334340U

CN215334340U - Shaft sealing structure of speed reducer for stirring

Info

Publication number: CN215334340U
Application number: CN202121515208.9U
Authority: CN
Inventors: 翟向阳
Original assignee: Shehong Keriwo Environmental Protection Technology Co ltd
Current assignee: Shehong Keriwo Environmental Protection Technology Co ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2021-12-28
Anticipated expiration: 2031-07-05

Abstract

The utility model discloses a shaft sealing structure of a speed reducer for stirring, which comprises a shell, wherein a sealing sleeve is arranged in the shell, a cavity is arranged in the sealing sleeve, a ring plate is arranged on one side of the sealing sleeve, a first spring is arranged on one side of the ring plate, a first flange is arranged on the other side of the first spring, the other side of the first flange is connected with a pressure plate, an oil retainer is arranged on the other side of the sealing sleeve, a bearing is arranged on the other side of the oil retainer, the bearing is fixedly connected with the shell, a first through hole is arranged on the outer side of the bearing, an oil return groove is fixedly connected with one side of the first through hole, a first oil return pipe is arranged above the sealing sleeve, the other end of the first oil return pipe is arranged on the oil return groove, the cyclic utilization of lubricating oil in the cavity is realized through the oil return pipe and the oil retainer inside, and the loss of the lubricating oil is greatly reduced, the service life of the equipment is prolonged.

Description

Shaft sealing structure of speed reducer for stirring

Technical Field

The utility model relates to the field of shaft sealing structures of stirring speed reducers, in particular to a shaft sealing structure of a speed reducer for stirring.

Background

The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. Since the drive shaft extends through the inside and outside of the apparatus, there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks out, and if the pressure in the apparatus is lower than atmospheric pressure, air leaks into the apparatus, so that a shaft seal device must be provided to prevent leakage. The shaft seal has many kinds, and the mechanical seal has the advantages of small leakage amount, long service life and the like, so the mechanical seal is the most important shaft sealing mode in the devices in the world, and is defined in the relevant national standards as follows: the device for preventing fluid leakage is formed by at least one pair of end faces perpendicular to the rotation axis, which are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal.

The shaft sealing structure of the existing stirring speed reducer still has many defects in the using process, lubricating oil can be injected into the speed reducer in use to reduce the friction between parts, but the lubricating oil can be leaked in long-time operation of equipment, the loss of a sealing element can be caused in long-time operation, the distance between the sealing element and a rotating shaft is increased, and the sealing performance inside the speed reducer is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a shaft sealing structure of a speed reducer for stirring.

In order to achieve the purpose, the utility model adopts the following technical scheme: a shaft sealing structure of a speed reducer for stirring comprises a shell, wherein a sealing sleeve is arranged in the shell, a cavity is arranged in the sealing sleeve, a ring plate is arranged on one side of the sealing sleeve, a first spring is arranged on one side of the ring plate, a first flange is arranged on the other side of the first spring, and the other side of the first flange is connected with a pressing plate;

the opposite side of seal cover is provided with the oil slinger, the opposite side of oil slinger is provided with the bearing, and bearing and shell fixed connection, the outside of bearing is provided with first through-hole, and first through-hole runs through the bearing and is provided with the opening, one side fixedly connected with oil gallery of first through-hole, the opposite side fixed connection organism of oil gallery.

As a further description of the above technical solution:

and a first oil separation cover and a second oil separation cover are arranged on the outer surface of the sealing sleeve.

As a further description of the above technical solution:

the upper portion of the sealing sleeve is fixedly connected with a liquid injection valve, the upper end of the liquid injection valve is provided with a valve, the liquid injection valve is provided with an oil blocking sleeve, and the other side of the oil blocking sleeve is fixedly connected to the shell.

As a further description of the above technical solution:

and a first oil return pipe is arranged above the sealing sleeve, and the other end of the first oil return pipe is arranged on the oil return groove.

As a further description of the above technical solution:

the sealing sleeve is characterized in that a second oil return pipe is arranged below the sealing sleeve, the other end of the second oil return pipe is arranged below the oil return groove, and the second oil return pipe corresponds to the first oil return groove.

As a further description of the above technical solution:

and a second through hole is formed in one side of the oil return groove and corresponds to the first through hole.

As a further description of the above technical solution:

and a second spring is arranged on one side of the ring plate, and a second flange is fixedly connected to the other side of the second spring.

As a further description of the above technical solution:

one side of the machine body is rotatably connected with a rotating shaft, and the rotating shaft penetrates through the bearing, the shell and the pressing plate and is arranged on the outer side of the pressing plate.

The utility model has the following beneficial effects:

1. compared with the prior art, the outer surface of the sealing sleeve inside the shaft sealing structure of the speed reducer for stirring is provided with the first oil separation sleeve, the first oil return pipe and the second oil return pipe are arranged above the first oil return pipe, the other end of the first oil return pipe is connected to the oil return groove, when the speed reducer for stirring works, the internal oil baffle ring rotates together with the rotating shaft to throw lubricating oil onto the bearing, the lubricating oil flows to the oil return groove through the first through hole and the second through hole in the bearing and finally flows back into the cavity through the oil return pipe, the recycling of the lubricating oil is realized, the loss of the lubricating oil is greatly reduced, and the service life of the speed reducer for stirring is prolonged.

2. Compared with the prior art, this pressure plate of axle seal structure of speed reducer for stirring exerts pressure to first spring and second spring through first flange and second flange from top to bottom, the elasticity of spring is used on the seal cover, make the seal cover radially expand, and the inside and the pivot of seal cover closely laminate, equipment during operation for a long time, can produce wearing and tearing to the seal cover, and the elasticity of spring still can extrude the seal cover, make the seal cover still closely laminate to the pivot, realized letting the degree of wear greatly reduced of seal cover, the replacement cycle of seal part has been prolonged.

Drawings

Fig. 1 is a sectional view of a shaft sealing structure of a stirring speed reducer according to the present invention;

fig. 2 is a perspective view of a shaft sealing structure of a stirring speed reducer according to the present invention;

fig. 3 is a side view of a shaft sealing structure of a stirring speed reducer according to the present invention;

fig. 4 is a front view of a shaft seal structure of a stirring reducer according to the present invention.

Illustration of the drawings:

1. a body; 2. an oil return groove; 3. a first oil return pipe; 4. a first through hole; 5. a bearing; 6. a housing; 7. a first oil separation cover; 8. a liquid injection valve; 9. a valve; 10. an oil retaining sleeve; 11. a first spring; 12. a first flange; 13. a second through hole; 14. an oil slinger; 15. a second oil return pipe; 16. a chamber; 17. a second oil-separating cover; 18. sealing sleeves; 19. a ring plate; 20. a second spring; 21. a second flange; 22. pressing a plate; 23. and rotating the shaft.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., 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, but 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 thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" 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 connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, one embodiment of the present invention is provided: a shaft seal structure of a speed reducer for stirring comprises a shell 6, a seal sleeve 18 is arranged inside the shell 6, a cavity 16 is arranged inside the seal sleeve 18, a first oil separation cover 7 and a second oil separation cover 17 are arranged on the outer surface of the seal sleeve 18, a liquid injection valve 8 is fixedly connected above the seal sleeve 18, a valve 9 is arranged at the upper end of the liquid injection valve 8, an oil blocking sleeve 10 is arranged on the liquid injection valve 8, the other side of the oil blocking sleeve 10 is fixedly connected on the shell 6, when a worker injects lubricating oil into the seal sleeve 18, the oil blocking sleeve 10 on the liquid injection valve 8 can ensure that the lubricating oil cannot enter the shell 6 when the lubricating oil leaks laterally, the sealing performance of the device is greatly improved, a first oil return pipe 3 is arranged above the seal sleeve 18, the other end of the first oil return pipe 3 is arranged on an oil return groove 2, a second oil return pipe 15 is arranged below the seal sleeve 18, the other end of the second oil return pipe 15 is arranged below the oil return groove 2, a ring plate 19 is arranged on one side of the second oil return pipe 15, corresponding to the first oil return groove 2, of the sealing sleeve 18, a first spring 11 is arranged on one side of the ring plate 19, a first flange 12 is arranged on the other side of the first spring 11, the other side of the first flange 12 is connected with a pressing plate 22, a second spring 20 is arranged on one side of the ring plate 19, and a second flange 21 is fixedly connected to the other side of the second spring 20;

the other side of the sealing sleeve 18 is provided with an oil deflector ring 14, the other side of the oil deflector ring 14 is provided with a bearing 5, the bearing 5 is fixedly connected with a shell 6, the outer side of the bearing 5 is provided with a first through hole 4, the first through hole 4 penetrates through the bearing 5 to be provided with an opening, one side of the first through hole 4 is fixedly connected with an oil return groove 2, the other side of the oil return groove 2 is fixedly connected with a machine body 1, one side of the oil return groove 2 is provided with a second through hole 13, the second through hole 13 corresponds to the first through hole, one side of the machine body 1 is rotatably connected with a rotating shaft 23, the rotating shaft 23 penetrates through the bearing 5, the shell 6 and a pressing plate 22 are arranged on the outer side of the pressing plate 22, when the equipment works, the internal oil deflector ring 14 rotates together with the rotating shaft 23 to throw lubricating oil onto the bearing 5, the lubricating oil flows to the oil return groove 2 through the first through hole 4 and the second through hole 13 on the bearing 5, and finally flows back to the interior of the cavity 16 through an oil return pipe, the method realizes the reutilization of the lubricating oil, greatly reduces the loss of the lubricating oil and prolongs the service life of equipment.

The working principle is as follows: starting the equipment, the rotating shaft 23 rotates, the internal oil slinger 14 rotates together with the rotating shaft 23 to throw the lubricating oil leaked out from the cavity 16 onto the bearing, the lubricating oil flows to the oil return groove 2 through the first through hole 4 and the second through hole 13 on the bearing 5 and finally flows back into the cavity 16 through the oil return pipe, so that the cyclic utilization of the lubricating oil is realized, the loss of the lubricating oil is greatly reduced, the service life of the equipment is prolonged, the pressure plate 22 at the outer side exerts pressure on the first spring 11 and the second spring 20 through the upper flange 12 and the lower flange 21, the elastic force of the springs acts on the sealing sleeve 18, the sealing sleeve 18 is radially expanded, the inside of the sealing sleeve 18 is tightly attached to the rotating shaft 23, when the equipment works for a long time, the sealing sleeve 18 is abraded, the elastic force of the springs can still extrude the sealing sleeve 18, so that the sealing sleeve 18 is still tightly attached to the rotating shaft, the abrasion degree of the sealing sleeve 18 is greatly reduced, and the replacement period of sealing parts is prolonged.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a stirring is with axle seal structure of speed reducer, includes shell (6), its characterized in that: a sealing sleeve (18) is arranged in the shell (6), a cavity (16) is arranged in the sealing sleeve (18), a ring plate (19) is arranged on one side of the sealing sleeve (18), a first spring (11) is arranged on one side of the ring plate (19), a first flange (12) is arranged on the other side of the first spring (11), and the other side of the first flange (12) is connected with a pressure plate (22);

the opposite side of seal cover (18) is provided with oil slinger (14), the opposite side of oil slinger (14) is provided with bearing (5), and bearing (5) and shell (6) fixed connection, the outside of bearing (5) is provided with first through-hole (4), and first through-hole (4) run through bearing (5) and be provided with the opening, one side fixedly connected with oil gallery (2) of first through-hole (4), opposite side fixed connection organism (1) of oil gallery (2).

2. The shaft seal structure of a reduction gear for stirring according to claim 1, characterized in that: the outer surface of the sealing sleeve (18) is provided with a first oil separation cover (7) and a second oil separation cover (17).

3. The shaft seal structure of a reduction gear for stirring according to claim 1, characterized in that: the upper portion fixedly connected with of seal cover (18) annotates liquid valve (8), the upper end setting of annotating liquid valve (8) is by valve (9), it keeps off oil cover (10) to be provided with on notes liquid valve (8), and keeps off the opposite side fixed connection of oil cover (10) on shell (6).

4. The shaft seal structure of a reduction gear for stirring according to claim 1, characterized in that: and a first oil return pipe (3) is arranged above the sealing sleeve (18), and the other end of the first oil return pipe (3) is arranged on the oil return groove (2).

5. The shaft seal structure of a reduction gear for stirring according to claim 1, characterized in that: the oil return device is characterized in that a second oil return pipe (15) is arranged below the sealing sleeve (18), the other end of the second oil return pipe (15) is arranged below the oil return groove (2), and the second oil return pipe (15) corresponds to the first oil return groove (2).

6. The shaft seal structure of a reduction gear for stirring according to claim 1, characterized in that: one side of the oil return groove (2) is provided with a second through hole (13), and the second through hole (13) corresponds to the first through hole.

7. The shaft seal structure of a reduction gear for stirring according to claim 1, characterized in that: a second spring (20) is arranged on one side of the ring plate (19), and a second flange (21) is fixedly connected to the other side of the second spring (20).

8. The shaft seal structure of a reduction gear for stirring according to claim 1, characterized in that: one side of the machine body (1) is rotatably connected with a rotating shaft (23), and the rotating shaft (23) penetrates through the bearing (5), the shell (6) and the pressing plate (22) and is arranged on the outer side of the pressing plate (22).