CN111810639B

CN111810639B - Self-lubricating grease discharging sealing ring and sealing device

Info

Publication number: CN111810639B
Application number: CN202010501828.0A
Authority: CN
Inventors: 欧喜兵
Original assignee: JIANGMEN XINHUI SEALING TECHNOLOGY CO LTD
Current assignee: Guangdong Xinhui Technology Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2022-11-15
Anticipated expiration: 2040-06-04
Also published as: CN111810639A

Abstract

The invention discloses a sealing ring and a sealing device for self-discharging lubricating grease, comprising: a primary ring having an inner surface with a seal lip, a secondary lip extending in a direction away from the seal lip, an oil sump formed between the seal lip and the secondary lip; and the oil pumping ribs are arranged on the sealing lip and positioned on the sealing lip back to the side surface of the auxiliary lip. The sealing ring and the sealing device capable of discharging the lubricating grease automatically can discharge the waste lubricating grease slowly, reduce the difficulty of replacing the lubricating grease, avoid the deterioration of the working environment of the bearing and ensure the normal work of equipment.

Description

Self-lubricating grease discharging sealing ring and sealing device

Technical Field

The invention relates to a sealing technology, in particular to a sealing ring and a sealing device capable of automatically discharging lubricating grease.

Background

The bearing of the large-scale wind driven generator is a key component of the whole set of equipment, and the lubrication of the bearing is very critical to ensure that a rotating shaft of the equipment can normally run and reach corresponding service life.

Because the wind driven generator is large in size and is equipped on the mountain top or the sea side, regular maintenance is usually adopted to replace the lubricating grease.

However, under high-altitude working conditions, it is very difficult to replace the grease, especially to clean the waste grease, and the remaining waste grease is liable to deposit and clog, and moreover, there is no lubricating effect, which causes deterioration of the working environment of the bearing and is liable to cause failure.

Disclosure of Invention

The invention aims to solve at least one technical problem in the prior art, and provides a sealing ring and a sealing device capable of discharging lubricating grease automatically, which can slowly discharge waste lubricating grease, reduce the difficulty of replacing the lubricating grease, avoid the deterioration of the working environment of a bearing and ensure the normal operation of equipment.

The invention is realized by the following technical scheme:

in a first aspect of the present invention, there is provided a seal ring for self-draining grease, comprising: a primary ring having an inner surface with a seal lip, a secondary lip extending in a direction away from the seal lip, an oil reservoir formed between the seal lip and the secondary lip; and the oil pumping ribs are arranged on the sealing lip and positioned on the side surface of the sealing lip back to the auxiliary lip.

According to the sealing ring capable of discharging lubricating grease automatically, the sealing lip is provided with a front lip surface and a rear lip surface, and the front lip surface is provided with the oil pumping rib.

According to the sealing ring for self-discharging grease in the first aspect of the invention, the included angle between the front lip surface and the axis of the main ring is 20 to 30 degrees.

According to the sealing ring for self-lubricating grease discharge in the first aspect of the present invention, the included angle between the rear lip surface and the axis of the main ring is 40 to 50 degrees.

According to the sealing ring with self-lubricating grease discharging function, the pumping rib extends to a connecting line between the front lip surface and the rear lip surface.

According to the sealing ring for self-lubricating grease discharge in the first aspect of the present invention, the pumping ribs are arranged offset with respect to the axis of the main ring.

According to the sealing ring capable of discharging the lubricating grease automatically, the end face of the main ring is provided with the side ring groove, and the side ring groove is sleeved with the spring which is used for clamping the sealing lip.

According to the first aspect of the present invention, the sealing ring further comprises an outer diameter portion, and the outer diameter portion is sleeved on the outer surface of the main ring.

In a second aspect, the present invention provides a sealing device for self-discharging grease, comprising any one of the above-mentioned sealing rings for self-discharging grease.

According to the second aspect of the invention, the sealing device for self-discharging grease further comprises an oil discharge pipe and a collection box, wherein the collection box is arranged at the bottom of the oil discharge pipe, and the top of the oil discharge pipe is communicated with the oil storage tank.

Has the advantages that: compared with the prior art, the sealing ring and the sealing device for the self-discharging lubricating grease have the advantages that the main ring is arranged, the main ring is provided with the sealing lip, the auxiliary lip and the oil storage groove, the oil pumping ribs are arranged on the sealing lip, so that when a rotating shaft of equipment rotates, an oil pumping channel is formed between the adjacent oil pumping ribs, old lubricating grease is slowly released to the oil storage groove, the old lubricating grease is gathered, new lubricating grease can be supplemented, the defects caused by the residual old lubricating grease are avoided, meanwhile, the service life of a bearing is prolonged, the maintenance period is prolonged, and the maintenance difficulty of high-altitude equipment such as a large-scale wind driven generator is reduced.

Drawings

The invention is further described below with reference to the drawings and examples;

FIG. 1 is a schematic view of the construction of the sealing device of the present invention;

FIG. 2 is a schematic structural view of the seal ring of FIG. 1;

fig. 3 is an enlarged schematic view of the sealing lip of the sealing ring of fig. 2.

Reference numerals are as follows: 100-main ring, 110-sealing lip, 120-auxiliary lip, 130-oil storage groove, 140-pump oil rib, 150-front lip face, 160-rear lip face, 170-side ring groove, 180-spring, 190-outer diameter part, 200-oil discharge pipe and 210-collection box.

Detailed Description

Reference will now be made in detail to the present embodiments of the present invention, preferred embodiments of which are illustrated in the accompanying drawings, wherein the drawings are provided for the purpose of visually supplementing the description in the specification and so forth, and which are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1, an embodiment of a self-grease-draining seal is provided.

Structurally, the oil drain pipe mainly comprises a sealing ring, an oil drain pipe 200 and a collection box 210. Wherein, the collection box 210 is arranged at the bottom of the oil drain pipe 200, and the top of the oil drain pipe 200 is communicated with the sealing ring.

Referring to fig. 2, the sealing ring has an outer diameter portion 190 and a main ring 100, wherein the outer diameter portion 190 is made of rubber material and fiber fabric and is fixed to the end cover of the device in an interference manner.

In detail, the inner surface of the primary ring 100 has a sealing lip 110, a secondary lip 120 extending in a direction away from said sealing lip 110.

The sub lip 120 is provided on the side close to the outside of the apparatus, and the seal lip 110 is provided on the side close to the inside of the apparatus.

Referring to fig. 1, the end surface of the main ring 100 is provided with a side ring groove 170, and the side ring groove 170 is sleeved with a spring 180, and the spring 180 is used for tightening the sealing lip 110.

That is, the elastic force of the spring 180 causes the seal lip 110 to abut against the rotational shaft of the apparatus.

Referring to fig. 2, for the seal lip 110, the seal lip 110 has a front lip surface 150 and a rear lip surface 160, the front lip surface 150 is located on the side of the rear lip surface 160 away from the sub-lip 120, wherein the front lip surface 150 has a plurality of pump ribs 140.

Referring to fig. 3, specifically, the front lip surface 150 forms an angle of 20 to 30 degrees with the axis of the main ring 100, that is, a front lip angle of 20 to 30 degrees, and the rear lip surface 160 forms an angle of 40 to 50 degrees with the axis of the main ring 100, that is, a rear lip angle of 40 to 50 degrees.

The arrangement of the front lip angle and the rear lip angle is opposite to the national standard GBT 9877-2008, and is beneficial, the arrangement range of the front lip angle prolongs the length of an oil pumping channel formed by the oil pumping rib 140, the front lip surface 150 and the rotating shaft, so that the waste lubricating grease can be discharged into the oil storage groove 130, the moving speed of the waste lubricating grease is reduced, the slow oil discharge is realized, the lubricating grease is fully utilized, and the waste is reduced.

Meanwhile, the setting range of the rear lip angle increases the depth of the oil storage groove 130, and the storage capacity of the oil storage groove 130 is improved.

In some preferred embodiments, the pump wick 140 may extend to a line connecting the front lip surface 150 and the rear lip surface 160.

Thus, the connection line of the front lip surface 150 and the rear lip surface 160 is prevented from blocking the pumping oil passage.

In some preferred embodiments, the pump oil ribs 140 may be disposed offset from the axis of the main ring 100.

Therefore, the oil pumping capacity is relatively improved, and meanwhile, the oil pumping channel is also prolonged, and the sealing is not influenced.

An oil discharge hole can be formed at the bottom of the oil storage tank 130, and the oil discharge hole is communicated with the oil discharge pipe 200, so that waste lubricating grease can be automatically discharged.

Thus, the present embodiment has the following effects: through setting up main ring 100, make main ring 100 have seal lip 110, vice lip 120 and oil storage tank 130, set up pump oil muscle 140 on seal lip 110, thereby, when the rotation axis of equipment rotates, form the pump oil passageway between the adjacent pump oil muscle 140, and then, slowly release old lubricating grease to oil storage tank 130, make old and useless lubricating grease gather, make new lubricating grease can supply, avoid old and useless lubricating grease to remain the defect that brings, and simultaneously, both prolonged the life-span of bearing, prolong the maintenance cycle, the maintenance degree of difficulty of high altitude equipment such as large-scale aerogenerator has still been reduced.

Therefore, the automatic updating of the lubricating grease can be realized by regularly maintaining the quantitative adding or the adding of the automatic filling device according to the discharging amount, the lubricating effect is improved, and the normal operation of the equipment is ensured.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A self-draining grease seal ring, comprising:

the main ring (100) is provided with a sealing lip (110), a secondary lip (120) extending in the direction away from the sealing lip (110) and an oil storage groove (130) formed between the sealing lip (110) and the secondary lip (120), and an oil discharge hole is formed in the bottom of the oil storage groove (130) and communicated with an oil discharge pipe (200) so as to automatically discharge waste lubricating grease;

the oil pumping ribs (140) are arranged on the sealing lip (110) and are positioned on the side surface, back to the auxiliary lip (120), of the sealing lip (110);

the sealing lip (110) is provided with a front lip surface (150) and a rear lip surface (160), and the front lip surface (150) is provided with the oil pumping rib (140); the oil pumping rib (140) extends to a connecting line of the front lip surface (150) and the rear lip surface (160);

when the rotating shaft rotates, an oil pumping channel is formed between the adjacent oil pumping ribs (140), and the waste lubricating grease is slowly released to the oil storage tank (130), so that the waste lubricating grease is gathered, and the new lubricating grease can be replenished.

2. A self-lubricating sealing ring, according to claim 1, characterized in that the angle between the front lip surface (150) and the axis of the primary ring (100) is 20 to 30 degrees.

3. A self-lubricating sealing ring, according to claim 1, wherein the angle between the rear lip surface (160) and the axis of the primary ring (100) is 40 to 50 degrees.

4. A self-lubricating sealing ring, according to claim 1, wherein the pump rib (140) is offset with respect to the axis of the main ring (100).

5. A self-lubricating sealing ring, according to claim 1, characterized in that the end face of the main ring (100) is provided with a side ring groove (170), the side ring groove (170) is sleeved with a spring (180), and the spring (180) is used for clamping the sealing lip (110).

6. The self-lubricating sealing ring according to claim 1, further comprising an outer diameter portion (190), wherein the outer diameter portion (190) is sleeved on the outer surface of the main ring (100).

7. A self-grease-expelling sealing device, comprising a self-grease-expelling sealing ring according to any one of claims 1 to 6.

8. The sealing device for self-discharging grease according to claim 7, further comprising an oil discharge pipe (200) and a collection box (210), wherein the collection box (210) is disposed at the bottom of the oil discharge pipe (200), and the top of the oil discharge pipe (200) is communicated with the oil storage tank (130).