CN212004188U

CN212004188U - Shaft sealing structure of speed reducer for stirring

Info

Publication number: CN212004188U
Application number: CN202020593028.1U
Authority: CN
Inventors: 任云刚
Original assignee: Suzhou Wolf Transmission Machinery Co ltd
Current assignee: Suzhou Wolf Transmission Machinery Co ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-11-24
Anticipated expiration: 2030-04-20

Abstract

The utility model relates to an axle seal structure of speed reducer for stirring, including organism, output flange, first oil blanket, oil retainer, aligning roller bearing and second oil blanket, output flange is coaxial and clearance fit with the output shaft of organism, and its inner wall is equipped with the extension of upwards buckling to form an annular oil storage chamber, the oil storage chamber is equipped with one and the draining passageway of external intercommunication, is equipped with the chock plug in the draining passageway, first oil blanket, oil retainer, aligning roller bearing and second oil blanket from last down in proper order the suit on the output shaft. In the shaft sealing structure of the speed reducer for stirring, an oil storage cavity and an oil drainage channel are additionally arranged, so that the speed reducer for stirring is convenient for workers to inspect and process; the sealing effect is further improved through double oil sealing; the self-aligning roller bearing is adopted, so that the span and the bearing capacity of the bearing are increased, and the service life is prolonged; the sealing effect at the shaft of the speed reducer is improved, and the stress effect of the bearing is improved.

Description

Shaft sealing structure of speed reducer for stirring

Technical Field

The utility model relates to a speed reducer technical field, in particular to axle seal structure of speed reducer for stirring.

Background

The speed reducer is an important component of a stirring device in a reaction kettle, in the prior art (as shown in an attached drawing 3), only one layer of oil seal is arranged at a flange in the speed reducer, an output shaft of the speed reducer is connected with a stirring paddle, and because a liquid medium stirred in the kettle is uneven, the output shaft always bears alternating load, and the bearing and the oil seal are easy to wear after long-time use. Bearing wear further leads to the speed reducer gear to damage, and oil blanket wearing and tearing can the oil leak, make lubricating oil leak to the cauldron in, to the liquid medium that does not tolerate oil, can lead to the liquid medium in the whole cauldron to scrap, cause huge economic loss.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: in order to overcome the defects of the prior art, the shaft sealing structure of the speed reducer for stirring is provided.

In order to achieve the above technical effect, the utility model discloses a technical scheme is: a shaft sealing structure of a speed reducer for stirring comprises a machine body, an output flange, a first oil seal, an oil retainer ring, a self-aligning roller bearing and a second oil seal, the output flange is fixedly connected on the machine body, the output flange is coaxial with the output shaft of the machine body and is in clearance fit with the output shaft, the inner wall of the oil storage cavity is provided with an extending part which is bent upwards so as to form an annular oil storage cavity, the oil storage cavity is provided with an oil drainage channel communicated with the outside, a chock plug is arranged in the oil drainage channel, the first oil seal, the oil retainer, the self-aligning roller bearing and the second oil seal are sequentially sleeved on the output shaft from top to bottom, the first oil seal seals the upper end of the oil storage cavity, the upper end of the oil retainer is abutted against the first oil seal, a flow guide channel is formed between the lower end of the self-aligning roller bearing and the oil storage cavity, the self-aligning roller bearing is located below the oil storage cavity and connected with the output flange, and the second oil seal seals the lower end of the self-aligning roller bearing.

Preferably, the first oil seal and the second oil seal are identical in structure, the first oil seal is composed of a sealing piece, a framework and a spring, the sealing piece of the sealing piece is of a U-shaped structure, a sealing lip is arranged on one side of the sealing piece, the framework is arranged in the sealing piece, and the spring is arranged on the rear side of the sealing lip.

Preferably, the oil slinger is tightly matched with the output shaft, and the upper end of the oil slinger is provided with a slope facing the oil storage cavity.

Preferably, the oil drainage channel is communicated with the bottom of the oil storage cavity.

Preferably, the plug head is in threaded connection with the oil drainage channel and is made of transparent materials.

Preferably, the output flange is integrally formed with the extension.

Preferably, the surface of the machine body is coated with an anti-corrosion zinc layer.

Compared with the prior art, the beneficial effects of the utility model are that: in the shaft sealing structure of the speed reducer for stirring, an oil storage cavity and an oil drainage channel are additionally arranged, so that the speed reducer for stirring is convenient for workers to inspect and process; the sealing effect is further improved through double oil sealing; the self-aligning roller bearing is adopted, so that the span and the bearing capacity of the bearing are increased, and the service life is prolonged; the sealing effect at the shaft of the speed reducer is improved, and the stress effect of the bearing is improved.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments, and it is obvious that the described embodiments are some embodiments, not all embodiments of the present invention.

Drawings

Fig. 1 is a schematic structural view of a shaft seal structure of a speed reducer for stirring according to the present invention.

Fig. 2 is an enlarged view of a portion a of fig. 1.

Fig. 3 is a schematic view of a shaft seal structure of a speed reducer in the prior art.

The reference numbers and corresponding designations in the drawings are: 1. the self-aligning type hydraulic oil pump comprises a machine body, 2 parts of an output flange, 3 parts of a first oil seal, 4 parts of an oil retainer, 5 parts of a self-aligning roller bearing, 6 parts of a second oil seal, 7 parts of a plug head, 101 parts of an output shaft, 201 parts of an extending part, 202 parts of an oil storage cavity, 203 parts of an oil drainage channel, 204 parts of a flow guide channel, 301 parts of a sealing element, 302 parts of a framework and 303 parts of a spring.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Example (b): as shown in fig. 1-2, a shaft seal structure of a speed reducer for stirring comprises a machine body 1, an output flange 2, a first oil seal 3, an oil retainer 4, a self-aligning roller bearing 5 and a second oil seal 6, wherein the output flange 2 is fixedly connected to the machine body 1, the output flange 2 is coaxial with an output shaft 101 of the machine body 1 and in clearance fit, the output flange 2 is used for fixing the machine body 1 in a butt joint manner with other equipment, an extending part 201 bent upwards is arranged on the inner wall of the output flange, so that an annular oil storage cavity 202 is formed, the oil storage cavity 202 can temporarily store leaked lubricating oil to avoid continuous oil leakage and play a protection role, the oil storage cavity 202 is provided with an oil drainage channel 203 communicated with the outside, the oil drainage channel 203 can discharge the lubricating oil accumulated in the oil storage cavity 202 to the outside, a plug 7 is arranged in the oil drainage channel 203, the plug 7 is used for controlling the opening and closing of the oil drainage channel 203, the first oil seal 3, Self-aligning roller bearing 5 and second oil blanket 6 from last down in proper order the suit on output shaft 101, the upper end of the sealed oil storage chamber 202 of first oil blanket 3, as first sealed, the upper end and the first oil blanket 3 of oil slinger 4 support and lean on, form a water conservancy diversion passageway 204 between its lower extreme and the oil storage chamber 202, water conservancy diversion passageway 204 can be with the downward drainage of the lubricating oil that oil storage chamber 202 spilled over, self-aligning roller bearing 5 is located the below of oil storage chamber 202 and is connected with output flange 2, self-aligning roller bearing 5 has increased the bearing span, the bearing capacity of bearing has been increaseed, the lower extreme of the sealed self-aligning roller bearing 5 of second oil blanket 6, as second sealed, play the dual fail-safe effect.

The first oil seal 3 and the second oil seal 6 have the same structure, the first oil seal 3 is composed of a sealing piece 301, a framework 302 and a spring 303, the sealing piece 301 of the sealing piece 301 is of a U-shaped structure, a sealing lip is arranged on one side of the sealing piece 301, the framework 302 is arranged in the sealing piece 301, and the spring 303 is arranged on the rear side of the sealing lip. The sealing element 301 of U-shaped structure is sealed effectual, and skeleton 302 is used for strengthening sealing element 301 structure, and spring 303 makes the seal lip hug closely output shaft 101, guarantees sealed effect.

The oil slinger 4 is tightly matched with the output shaft 101, and the upper end of the oil slinger 4 is provided with a slope facing the oil storage cavity 202. By adopting the installation mode of tight fit, the lubricating oil leaked from the first oil seal 3 cannot flow downwards along the output shaft 101 and conveniently flows into the oil storage cavity 202 through a slope for temporary storage.

The drain passage 203 communicates with the bottom of the reservoir chamber 202. To facilitate complete drainage of the lubricant from the reservoir 202.

The plug head 7 is in threaded connection with the oil drainage channel 203, and the plug head 7 is made of transparent materials. The mode that adopts threaded connection can guarantee the fixed effect of chock plug 7 and draining passageway 203, and whether the workman's shell has lubricating oil through the chock plug 7 observation draining passageway 203 of transparent material in to judge whether the speed reducer has the oil leak phenomenon.

The output flange 2 is integrally formed with the extension 201. To improve the coupling strength of the output flange 2 to the extension 201.

The surface of the machine body 1 is coated with an anti-corrosion zinc layer. In order to protect the surface of the machine body 1 and prolong the service life of the machine body.

The working principle is as follows:

unlike the shaft seal structure of the conventional speed reducer (see fig. 3), in the shaft seal structure of the stirring speed reducer, the thickness of the output flange 2 is increased, the oil storage cavity 202 is formed by providing the extension 201 on the inner wall, and when the first oil seal 3 fails, the leaked lubricating oil can flow into the oil storage cavity 202 through the oil retainer ring 4, and the lubricating oil is observed through the plug 7 made of a transparent material, so that the device is prompted to be maintained. If the machine cannot be stopped and the leakage is serious, the plug head 7 is pulled out to open the oil drainage channel 203, and the lubricating oil is drained to the outside of the equipment. If do not discover in time that the interior lubricating oil that has had of oil storage chamber 202 when patrolling and examining, and oil storage chamber 202 has been held fully afterwards, lubricating oil can flow to second oil blanket 6 along water conservancy diversion passageway 204, and second oil blanket 6 can prevent again that lubricating oil from leaking to destroying liquid medium in the cauldron, has played the effect of dual fail-safe. In addition, the self-aligning roller bearing 5 is arranged on the output flange 2, so that the bearing span is increased, the bearing capacity of the bearing is increased, the service life of the bearing is prolonged, and the service life of the speed reducer is prolonged.

The present invention is not limited to the above specific embodiments, and for those skilled in the art, the above conception can be used without any creative work, and all the changes made fall within the protection scope of the present invention.

Claims

1. The shaft sealing structure of the speed reducer for stirring is characterized by comprising a machine body (1), an output flange (2), a first oil seal (3), an oil retainer (4), a self-aligning roller bearing (5) and a second oil seal (6), wherein the output flange (2) is fixedly connected onto the machine body (1), the output flange (2) is coaxial with an output shaft (101) of the machine body (1) and is in clearance fit with the output shaft, an upward bent extending part (201) is arranged on the inner wall of the output flange, so that an annular oil storage cavity (202) is formed, the oil storage cavity (202) is provided with an oil drainage channel (203) communicated with the outside, a plug head (7) is arranged in the oil drainage channel (203), the first oil seal (3), the oil retainer (4), the self-aligning roller bearing (5) and the second oil seal (6) are sequentially sleeved on the output shaft (101) from top to bottom, the first oil seal (3) seals the upper end of the oil storage, the upper end of oil retainer ring (4) supports with first oil blanket (3) and leans on, forms a water conservancy diversion passageway (204) between its lower extreme and oil storage chamber (202), self-aligning roller bearing (5) are located the below of oil storage chamber (202) and are connected with output flange (2), the lower extreme of self-aligning roller bearing (5) is sealed in second oil blanket (6).

2. The shaft seal structure of the reduction gear for stirring according to claim 1, characterized in that the first oil seal (3) and the second oil seal (6) have the same structure, the first oil seal (3) is composed of a seal, a frame and a spring, the seal of the seal is a U-shaped structure, one side of the seal is provided with a seal lip, the frame is arranged in the seal, and the spring is arranged at the rear side of the seal lip.

3. The shaft seal structure of a reduction gear for stirring according to claim 1, wherein the slinger (4) is tightly fitted to the output shaft (101), and an upper end of the slinger (4) is provided with a slope toward the oil storage chamber (202).

4. The shaft seal structure of a reduction gear for stirring according to claim 3, characterized in that the oil drain passage (203) communicates with a bottom of the oil reservoir (202).

5. The shaft seal structure of the stirring reducer according to claim 4, wherein the plug (7) is screwed to the drain passage (203), and the plug (7) is made of a transparent material.

6. The shaft seal structure of a reduction gear for stirring according to any one of claims 1 to 5, characterized in that the output flange (2) is integrally formed with the extension portion (201).

7. The shaft seal structure of a reduction gear for stirring according to claim 1, wherein a surface of the machine body (1) is coated with an anticorrosive zinc layer.