CN219035546U - Spiral bearing sealing structure of horizontal spiral centrifugal machine - Google Patents
Spiral bearing sealing structure of horizontal spiral centrifugal machine Download PDFInfo
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- CN219035546U CN219035546U CN202222379680.5U CN202222379680U CN219035546U CN 219035546 U CN219035546 U CN 219035546U CN 202222379680 U CN202222379680 U CN 202222379680U CN 219035546 U CN219035546 U CN 219035546U
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- sealing seat
- decanter centrifuge
- spiral bearing
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Abstract
The utility model relates to a spiral bearing sealing structure of a horizontal spiral centrifugal machine, which comprises a sealing seat, a sealing cover and a sealing piece, wherein the sealing seat is arranged on one side of a bearing, the sealing cover is arranged on the sealing seat, the sealing piece is arranged between the sealing seat and an end cover shaft, and a wear-resisting ring is arranged between the sealing piece and the end cover shaft. The utility model has the advantages of reliable sealing, long service life and simple structure, and is suitable for sealing the spiral inner bearing of the horizontal spiral centrifugal machine.
Description
Technical Field
The utility model belongs to the technical field of engineering machinery, and particularly relates to a spiral bearing sealing structure of a horizontal decanter centrifuge.
Background
The bearings inside the screw of the decanter centrifuge need to be sealed to prevent the material in the bowl from entering and damaging the bearings. Traditional model adopts the skeleton oil blanket to seal, because the material that horizontal decanter centrifuge separated relates to each industry, to high temperature, corrosion resistance, high viscosity or contain hard particle's material, the life of skeleton oil blanket is just less ideal. Meanwhile, the sealing of the spiral inner bearing of the horizontal decanter centrifuge is not sufficiently lubricated due to structural limitation, and dry friction exists. For the above reasons, a new sealing technology is needed to solve the above problems, and the effectiveness of sealing is improved to protect the bearing.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model provides the spiral bearing sealing structure of the horizontal spiral centrifugal machine, which has the advantages of good sealing effect, long service life and sufficient lubrication.
In order to achieve the above purpose, the utility model provides a spiral bearing sealing structure of a horizontal decanter centrifuge, which comprises a sealing seat, a sealing cover and a sealing piece, wherein the sealing seat is arranged on one side of a bearing, the sealing cover is arranged on the sealing seat, the sealing piece is arranged between the sealing seat and an end cover shaft, and a wear-resisting ring is arranged between the sealing piece and the end cover shaft.
The sealing structure adopts a rotary plug type sealing structure, is used for sealing the bearing in the spiral of the horizontal decanter centrifuge, separates separated materials from bearing lubricating grease, prevents the materials from entering the bearing to damage the bearing, and simultaneously prevents the lubricating grease from entering the materials to pollute the materials.
The utility model further adopts the following technical scheme:
preferably, the seal comprises two rotating floodplugs arranged symmetrically and one spacer ring arranged between the two rotating floodplugs.
In the structure, the spacing rings respectively press the two rotary universal plugs to keep the two rotary universal plugs motionless, and bear sealing pressure to keep the rotary universal plugs from deforming, so that two independent effective sealing units are formed.
Preferably, the wear ring is disposed between the rotating plug and the shaft of the end cap shaft.
Preferably, the sealing seat is fixedly connected with one end of the screw through a first screw.
Preferably, the sealing cover is fixedly connected with one end of the sealing seat through a third screw.
Preferably, an L-shaped notch is provided at the lower end of the sealing seat, so that a groove is formed between the sealing seat and the sealing cover for mounting the sealing member, and the groove can be matched with the upper part of the sealing member.
Preferably, the cross section of the rotary universal plug is in an inverted F shape.
Preferably, a spring groove is formed in one side of the rotary universal plug, and a spring with a V-shaped section is arranged in the spring groove.
According to the utility model, the spiral inner bearing of the horizontal decanter centrifuge is sealed by adopting the rotary universal plug, the rotary universal plug is made of a pure polytetrafluoroethylene PTFE-based composite material, and the V-shaped spring is arranged in the rotary universal plug, so that the rotary universal plug has good corrosion resistance, wear resistance and high-temperature resistance, and has good sealing integrity when being used for fluid application, thereby realizing effective sealing under severe working conditions, such as a high-temperature high-corrosion high-viscosity use environment.
Preferably, a hard alloy layer is arranged on the surface of the wear-resistant ring.
The face of the utility model which seals against the rotating plug must have high wear resistance, low surface roughness and high dimensional accuracy, and therefore the utility model uses a wear ring whose surface is coated with a cemented carbide coating and ground to a low surface roughness and then secured to and rotated with the end cap shaft to form a set of dynamic seals with the rotating plug. When the horizontal decanter centrifuge works, the spiral, the rotary drum and the end cover shaft generate rotation speed difference, and at the moment, relative motion is formed between the lip of the rotary pan plug and the surface of the wear-resistant ring, so that materials separated by the horizontal decanter centrifuge and bearing lubricating grease are effectively separated, the materials are prevented from entering the bearing to damage the bearing, and meanwhile, the lubricating grease is prevented from entering the material to pollute the material.
The utility model has the advantages of reliable sealing, long service life and simple structure, and is suitable for sealing the spiral inner bearing of the horizontal spiral centrifugal machine.
Drawings
The utility model is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1. the end cover shaft, the first screw, the sealing seat, the bearing, the screw, the rotary drum, the second screw, the gland, the wear-resistant ring, the spacer ring, the rotary plug, the sealing cover and the third screw are arranged in sequence, wherein the first screw, the sealing seat, the bearing, the screw, the rotary drum, the second screw, the gland, the wear-resistant ring, the spacer ring, the rotary plug, the sealing cover and the third screw are arranged in sequence.
Detailed Description
Example 1
As shown in fig. 1, a spiral bearing sealing structure of a horizontal spiral centrifugal machine comprises a sealing seat 3, a sealing cover 12 and a sealing piece, wherein the sealing seat 3 is arranged on the left side of a bearing 4 and is propped against the bearing 4, the sealing seat 3 is fixedly connected with the left end of a spiral 5 through a first screw 2, the sealing cover 12 is fixedly connected with the left end of the sealing seat 3 through a third screw 13, the sealing piece is arranged between the sealing seat 3 and an end cover shaft 1, and a wear-resisting ring 9 is arranged between the sealing piece and the end cover shaft 1. An L-shaped notch is provided at the lower end of the sealing seat 3, which notch forms a groove between the sealing seat 3 and the sealing cover 12, which groove can cooperate with the upper part of the sealing member. The sealing element comprises two rotary universal plugs 11 and a spacing ring 10, the two rotary universal plugs 11 are arranged in grooves of the sealing seat 3, the rotary universal plugs 11 are fixed on the sealing seat 3 through sealing covers 12 by adopting third screws 13, the end cover shaft 1 is connected with the rotary drum 6, the two rotary universal plugs 11 are symmetrically arranged, the spacing ring 10 is arranged between the two rotary universal plugs 11, the spacing ring 10 is made of stainless steel, and the section of the rotary universal plugs 11 is in an inverted F shape. The spacer ring 10 presses the two rotary universal plugs 11 respectively so that they remain stationary, while the rotary universal plugs 11 are kept from being deformed by bearing the sealing pressure, thereby forming two independent effective sealing units.
A spring groove is arranged on one side of the rotary universal plug 11, and a stainless steel spring with a V-shaped section is arranged in the spring groove. The rotary universal plug 11 is made of a pure polytetrafluoroethylene PTFE-based composite material, so that the lip of the rotary universal plug 11 has good wear resistance and certain self-lubricating property.
In addition, a wear ring 9 is provided between the seal and the end cap shaft 1, and a cemented carbide layer is provided on the surface of the wear ring 9. The shaft of the end cover shaft 1 is provided with a wear-resistant ring 9, the outer circumferential surface of the wear-resistant ring 9 is sprayed with a hard alloy layer and ground, so that the outer circumferential surface of the wear-resistant ring 9 has lower roughness and better wear resistance, and the gland 8 fixes the inner ring gland 8 of the bearing 4 on the end cover shaft 1 through the second screw 7.
In the utility model, two bearings 4 are arranged at the end part of a mandrel in an inner hole of a screw 5, the screw 5 is arranged in a rotary drum 6, the rotary drum 6 is connected with an end cover shaft 1, the bearings 4 are arranged on the end cover shaft 1, the bearings 4 are fixed by a sealing seat 3, two rotary universal plugs 11 are arranged in the sealing seat 3, the two rotary universal plugs 11 are separated by a spacing ring 10, the rotary universal plugs 11 are fixed on the sealing seat 3 by a sealing cover 12, the bearings 4 are fixed on the end cover shaft 1 by a gland 8, the screw 5 and the end cover shaft 1 (the end cover shaft 1 and the rotary drum 6 are connected together) rotate at high speed, and a certain rotation speed difference exists between the screw 5 and the rotary drum 6 and between the screw cover shaft 1.
In actual use, two rotary universal plugs 11 are adopted to separate separated materials and bearing grease, the two rotary universal plugs 11 are installed in the sealing seat 3 back to back, meanwhile, the middle is separated by a stainless steel spacer ring 10, and the rotary universal plugs are tightly pressed and fixed on the sealing seat 3 by a sealing cover 12 and rotate together with the spiral 5. The spiral 5, the rotary drum 6 and the end cover shaft 1 have a certain rotation speed difference, so that reliable sealing is formed between the lip of the rotary universal plug 11 and the outer circumferential surface of the wear-resistant ring 9, materials in the rotary drum 6 and the bearing 4 are separated, and the bearing 4 is effectively protected. In the utility model, the material of the rotary universal plug 11 and the surface treatment of the outer circle of the wear-resistant ring 9 are key, so that the sealing structure has the characteristics of excellent sealing performance and high reliability, thereby achieving the effective sealing of high-temperature, high-corrosiveness, high-viscosity or hard-particle-containing materials.
In a word, the spiral bearing sealing structure adopting the rotary universal plug has the advantages of good sealing effect, long service life, simple structure, convenient maintenance and the like, and is particularly suitable for being applied to the horizontal spiral centrifugal machine in the use environment of high temperature, high corrosiveness and high viscosity.
In addition to the embodiments described above, other embodiments of the utility model are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the utility model.
Claims (8)
1. A spiral bearing sealing structure of a horizontal decanter centrifuge is characterized in that: including sealing seat, sealed lid and sealing member, the sealing seat sets up in bearing one side, sealed lid is installed on the sealing seat be equipped with the sealing member between sealing seat and the end cover axle be provided with the wear ring between sealing member and the end cover axle, the sealing member includes two rotatory general stopper and a spacer ring, and two rotatory general stopper symmetrical arrangement, the spacer ring sets up between two rotatory general stoppers.
2. The spiral bearing seal of a decanter centrifuge of claim 1, wherein: the wear ring is disposed between the rotating universal plug and the shaft of the end cap shaft.
3. The spiral bearing seal of a decanter centrifuge of claim 1, wherein: the sealing seat is fixedly connected with one end of the screw through a first screw.
4. The spiral bearing seal of a decanter centrifuge of claim 1, wherein: the sealing cover is fixedly connected with one end of the sealing seat through a third screw.
5. The spiral bearing seal of a decanter centrifuge of claim 1, wherein: an L-shaped notch is formed at the lower end of the sealing seat, so that a groove is formed between the sealing seat and the sealing cover, and the groove can be matched with the upper part of the sealing piece.
6. The spiral bearing seal structure of the decanter centrifuge of claim 5, wherein: the cross section of the rotary universal plug is in an inverted F shape.
7. The spiral bearing seal of a decanter centrifuge of claim 6, wherein: a spring groove is formed in one side of the rotary universal plug, and a spring with a V-shaped section is arranged in the spring groove.
8. A spiral bearing seal for a decanter centrifuge according to claim 2, wherein: and a hard alloy layer is arranged on the surface of the wear-resistant ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222379680.5U CN219035546U (en) | 2022-09-07 | 2022-09-07 | Spiral bearing sealing structure of horizontal spiral centrifugal machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222379680.5U CN219035546U (en) | 2022-09-07 | 2022-09-07 | Spiral bearing sealing structure of horizontal spiral centrifugal machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219035546U true CN219035546U (en) | 2023-05-16 |
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ID=86285577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222379680.5U Active CN219035546U (en) | 2022-09-07 | 2022-09-07 | Spiral bearing sealing structure of horizontal spiral centrifugal machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219035546U (en) |
-
2022
- 2022-09-07 CN CN202222379680.5U patent/CN219035546U/en active Active
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