CN112483554A - Compact lip labyrinth shaft seal unit, corresponding shaft seal and corresponding carrier roller - Google Patents
Compact lip labyrinth shaft seal unit, corresponding shaft seal and corresponding carrier roller Download PDFInfo
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- CN112483554A CN112483554A CN202011474842.2A CN202011474842A CN112483554A CN 112483554 A CN112483554 A CN 112483554A CN 202011474842 A CN202011474842 A CN 202011474842A CN 112483554 A CN112483554 A CN 112483554A
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- ring
- lip
- shaft
- sealing
- shaped
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/02—Adaptations of individual rollers and supports therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/02—Adaptations of individual rollers and supports therefor
- B65G39/09—Arrangements of bearing or sealing means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
- F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7896—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members with two or more discrete sealings arranged in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/80—Labyrinth sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/58—Conveyor systems, e.g. rollers or bearings therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Bearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention relates to a compact lip labyrinth shaft seal unit, a corresponding shaft seal and a corresponding carrier roller. In order to overcome the defects of the prior art, the compact lip labyrinth shaft sealing unit comprises an L-shaped outer sealing ring and a T-shaped inner sealing ring, the T-shaped inner sealing ring comprises a shaft sleeve ring and a spacer ring, the inner edge of the spacer ring is fixedly connected to the outer circumference of the shaft sleeve ring, the spacer ring divides the shaft sleeve ring into an inner ring part and an outer ring part, and the shaft sleeve ring of the T-shaped inner sealing ring is tightly sleeved on a matching shaft. The L-shaped outer sealing ring comprises a snap ring and a lip ring, the outer edge of the lip ring is fixedly connected to the outer edge of the snap ring, the inner edge of the lip ring is provided with an inward bent lip, the lip is sleeved on the outer ring part of the T-shaped inner sealing ring, and the L-shaped outer sealing ring is tightly clamped on the inner circumferential wall of the matched bearing seat and can rotate along with the matched bearing seat. The invention also relates to a corresponding shaft seal and carrier roller. The invention has compact structure and good sealing effect, is suitable for various rotating shafts, and is particularly suitable for matching with a rubber belt conveyor.
Description
Technical Field
The invention relates to a compact lip labyrinth shaft seal unit, a corresponding shaft seal and a corresponding carrier roller.
Background
The existing roller bearing generally adopts a sealing structure such as labyrinth seal or contact seal. The labyrinth seal has small rotating resistance and high allowable rotating speed; its advantages are high sealing effect, high resistance to rotation and low rotation speed.
2018.03.13, publication No. CN 207090383U, discloses a composite sealing carrier roller for a logistics conveyor belt, which only uses labyrinth sealing and contact sealing at the same time, but simply superposes two sealing modes, and has limited effect. The prior art urgently needs a novel shaft seal with small axial size and good sealing effect.
At present, the roller skin of the known conveyor idler rollers is mainly made of two distinct materials: (1) common metal materials, such as Q235-A roller special steel pipes; (2) non-metallic materials, such as PE polymer tubing, PTS polymer tubing, nylon tubing, and the like. In recent years, the running speed of a belt conveyor is higher and higher, and the requirements on the rotating speed and the service life of a carrier roller are higher and higher, but the bearing rotating speed of the existing carrier roller is required to be not more than 600r/min under the limitation of factors such as the material of a roller skin, the form of a bearing sealing structure and the like under the normal condition. The use requirement of the high-speed belt conveyor cannot be met.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a compact lip labyrinth shaft seal unit with small axial size and good sealing effect, a corresponding shaft seal and a corresponding carrier roller.
In order to solve the technical problem, the compact lip labyrinth shaft sealing unit comprises an L-shaped outer sealing ring and is characterized in that: it still includes T type inner seal circle, T type inner seal circle includes the axle sleeve ring and spacer ring, the spacer ring inner edge links firmly on the outer circumference of the axle sleeve ring, and the two integrated into one piece, and the spacer ring divide into interior loop portion and outer loop portion with the axle sleeve ring, the axle sleeve ring lock of T type inner seal circle is epaxial at the adapted, and the axle sleeve intra-annular of T type inner seal circle, outer terminal surface are by direct or indirect grip between adapted bearing inner race and the spring collar for the adapted axle, fix epaxially at the adapted.
The L-shaped outer sealing ring comprises a clamping ring and a lip ring, the outer edge of the lip ring is fixedly connected to the outer edge of the clamping ring, the outer edge of the lip ring and the outer edge of the clamping ring are integrally formed, the inner edge of the lip ring is provided with a lip edge which is bent inwards, the lip edge is sleeved and pressed on the outer ring portion of the T-shaped inner sealing ring, the outer wall of the clamping ring of the L-shaped outer sealing ring is tightly clamped on the inner circumferential wall of the matched bearing seat through a matched L-shaped retaining ring, and the inner end face and the outer end face of the clamping ring of the L-shaped outer sealing ring are directly or indirectly clamped between the bearing.
The lip edge of the L-shaped outer sealing ring and the outer ring part of the T-shaped inner sealing ring form contact sealing, and labyrinth sealing is formed between a spacer ring of the T-shaped inner sealing ring and the peripheral L-shaped outer sealing ring or a matched bearing. By the design, the L-shaped outer sealing ring and the T-shaped inner sealing ring are axially overlapped, the contact sealing and the labyrinth sealing are realized in the limited axial length, the waterproof and dustproof effects are better, and the additional rotating resistance is not increased. Meanwhile, the compact lip labyrinth shaft sealing unit is used as a relatively independent unit, and can be used in multiple times in shaft sealing design, so that the shaft sealing design is simpler.
Preferably, the axial length of the inner ring part of the T-shaped inner sealing ring is smaller than that of the outer ring part of the T-shaped inner sealing ring. By the design, the sealing effect is good.
The shaft seal comprises a seal ring, a bearing, an L-shaped check ring and a spring check ring for the shaft, wherein the matched bearing seat, the seal ring, the bearing, the L-shaped check ring and the spring check ring for the shaft are all sleeved on the matched shaft, and the seal ring, the bearing, the L-shaped check ring and the spring check ring for the shaft are all positioned in the matched bearing seat and are sequentially arranged from inside to outside, and the shaft seal is characterized in that: the lip labyrinth shaft sealing unit is characterized by further comprising two or more sets of the compact lip labyrinth shaft sealing units, the compact lip labyrinth shaft sealing units are sleeved on the shaft between the bearing and the L-shaped check ring side by side, the lip ring of each compact lip labyrinth shaft sealing unit is located on the outer side of the spacer ring of the T-shaped inner sealing ring matched with the lip ring, the inner end face of the shaft sleeve ring of the innermost compact lip labyrinth shaft sealing unit is abutted to the inner ring of the bearing, the outer end face of the shaft sleeve ring of the outermost compact lip labyrinth shaft sealing unit is abutted to the spring check ring for the shaft, the inner ring of the bearing, the spring check ring for the shaft and all the T-shaped inner sealing rings are together fixed together with the matched shaft.
The sealing ring comprises a clamping ring and a lip ring, the outer edge of the lip ring is fixedly connected to the inner edge of the clamping ring, the inner edge of the lip ring is provided with a lip edge which is bent outwards, the lip edge is sleeved on the matched shaft, the outer circumference of the clamping ring is clamped on the inner circumferential wall of the matched bearing seat, the inner side surface of the lip ring is propped against the inner side wall of the matched bearing seat, the outer wall of the clamping ring of all L-shaped outer sealing rings is tightly clamped on the inner circumferential wall of the matched bearing seat through the L-shaped check ring, the sealing ring, the outer ring of the bearing, the L-shaped check ring and all the L-shaped outer sealing rings are fixed together with the matched bearing seat and rotate around the axial lead of the matched shaft along with the matched bearing seat, the lip edge of the sealing ring forms contact sealing with the matched shaft, and the lip edge of the L-shaped outer sealing ring of each compact type lip edge shaft sealing unit forms contact, and a labyrinth seal is formed between a spacer ring of a T-shaped inner sealing ring of each compact lip labyrinth shaft sealing unit and a peripheral L-shaped outer sealing ring or the bearing.
The design has compact structure, realizes the formation of multi-stage contact sealing and multi-stage labyrinth sealing at a limited axial distance, and has good sealing effect and high allowable rotating speed.
The carrier roller comprises a shaft, a roller and a roller leather, wherein bearing seats and shaft seals are respectively arranged at two ends of the roller, the roller leather is sleeved on the roller, and the shaft is inserted into the roller and the bearing seats and the shaft seals at the two ends of the roller leather, and the carrier roller is characterized in that: the shaft seal is the shaft seal, the roller skin is PE polymer roller skin, and the roller skin comprises PE material outer roller skin, reinforced steel wire net, PVC inner roller skin. By the design, the roller skin is of a high-strength composite structure, the mechanical strength is high, and the PE material outer roller skin and a matched conveyor rubber belt are not easy to slip.
The compact lip labyrinth shaft seal unit, the corresponding shaft seal and the corresponding carrier roller have compact structures, realize the formation of multi-stage contact seal and multi-stage labyrinth seal in limited axial distance, have good sealing effect and high allowable rotating speed, are suitable for various rotating shafts, and are particularly suitable for being matched with a rubber belt conveyor.
Drawings
The compact lip labyrinth shaft seal unit, the corresponding shaft seal and the corresponding carrier roller of the invention are further described below with reference to the accompanying drawings:
FIG. 1 is a schematic cross-sectional structural view (taken along a vertical plane passing through the shaft axis) of a compact lip labyrinth shaft seal unit of the present invention;
FIG. 2 is a schematic sectional view (taken along a vertical plane passing through the axis) of a second embodiment of the shaft seal of the present invention
FIG. 3 is a schematic cross-sectional view (taken along a vertical plane passing through the axis) of a third embodiment of the shaft seal of the present invention
Fig. 4 is a schematic end section view (taken along a vertical plane passing through the axis) of an idler roll according to the present invention.
In the figure: 1 is an L-shaped outer sealing ring, 11 is a snap ring, 12 is a lip ring, 13 is a lip edge, 2 is a T-shaped inner sealing ring, 21 is a shaft sleeve ring, 211 is an inner ring part, 212 is an outer ring part, 22 is a spacer ring, 3 is a sealing ring, 4 is a bearing, 5 is an L-shaped retainer ring, 6 is a shaft spring retainer ring, 7 is a bearing seat, 4 is a bearing, 41 is an inner ring of the bearing 4, 42 is an outer ring of the bearing 4, 8 is a shaft, 9 is a roller, 10 is a roller skin, 101 is an outer roller skin made of PE material, 102 is a reinforced steel wire mesh, and 103 is an inner roller skin made of PVC.
Detailed Description
The first implementation mode comprises the following steps: as shown in fig. 1, the compact lip labyrinth shaft seal unit includes an L-shaped outer seal ring 1, and is characterized in that: the inner seal ring 2 comprises a shaft sleeve ring 21 and a spacer ring 22, the inner edge of the spacer ring 22 is fixedly connected to the outer circumference of the shaft sleeve ring 21 and is integrally formed, the shaft sleeve ring is divided into an inner ring part 211 and an outer ring part 212 by the spacer ring 22, the shaft sleeve ring 21 of the inner seal ring 2 is tightly sleeved on an adapted shaft (not shown in figure 1, see figures 2-4), and the inner end surface and the outer end surface of the shaft sleeve ring 21 of the inner seal ring 2 are directly or indirectly tightly clamped between an inner ring of the adapted bearing and a spring retainer ring for the adapted shaft and are fixed on the adapted shaft (not shown in figure 1, see figures 2-4).
The L-shaped outer sealing ring 1 comprises a clamping ring 11 and a lip ring 12, the outer edge of the lip ring 12 is fixedly connected to the outer edge of the clamping ring 11, the clamping ring 11 and the lip ring 12 are integrally formed, an inward bent lip 13 is arranged on the inner edge of the lip ring 12, the lip 13 is sleeved on an outer ring part 212 of the T-shaped inner sealing ring 2, the outer wall of the clamping ring 11 of the L-shaped outer sealing ring 1 is tightly clamped on the inner circumferential wall of a matched bearing seat through a matched L-shaped retaining ring (not shown in figure 1, see figures 2-4), and the inner end face and the outer end face of the clamping ring 11 of the L-shaped outer sealing ring 1 are directly or indirectly tightly clamped between the matched bearing outer ring and the matched L-shaped retaining ring and can rotate along with the bearing seat (not.
A lip edge 13 of the L-shaped outer sealing ring 1 and the outer ring part of the T-shaped inner sealing ring 2 form contact sealing, and labyrinth sealing is formed between a spacer ring of the T-shaped inner sealing ring and the peripheral L-shaped outer sealing ring or a matched bearing. The axial length of the inner ring part 211 of the T-shaped inner sealing ring 1 is smaller than that of the outer ring part 212 thereof.
The second embodiment: as shown in fig. 2, the shaft seal of the present invention includes a seal ring 3, a bearing 4, an L-shaped retainer ring 5 and a shaft spring retainer ring 6, the matched bearing seat 7, the seal ring 3, the bearing 4, the L-shaped retainer ring 5 and the shaft spring retainer ring 6 are all sleeved on the matched shaft 8, the seal ring 3, the bearing 4, the L-shaped retainer ring 5 and the shaft spring retainer ring 6 are all located in the matched bearing seat 7 and are sequentially arranged from inside to outside, and the present invention is characterized in that: the lip labyrinth shaft sealing structure is characterized by further comprising two sets of the compact lip labyrinth shaft sealing units, the compact lip labyrinth shaft sealing units are sleeved on the matched shaft 8 between the bearing 4 and the L-shaped check ring 5 side by side, the lip ring 12 of each compact lip labyrinth shaft sealing unit is located on the outer side of the spacer ring 22 of the T-shaped inner sealing ring 2 matched with the lip ring, the inner end face of the shaft sleeve ring 21 of the innermost compact lip labyrinth shaft sealing unit abuts against the inner ring 41 of the bearing 4, the outer end face of the shaft sleeve ring 21 of the outermost compact lip labyrinth shaft sealing unit abuts against the shaft circlip 6, the inner ring 41 of the bearing 4, the shaft circlip 6 and all the T-shaped inner sealing rings 2 are matched and fixed together with the shaft 8.
The sealing ring 3 comprises a snap ring 11 and a lip ring 12, the outer edge of the lip ring 12 is fixedly connected to the inner edge of the snap ring 11, the inner edge of the lip ring 12 is provided with a lip edge 13 bent outwards, the lip edge 13 is sleeved and pressed on the matched shaft 8, the outer circumference of the snap ring 11 is clamped on the inner circumferential wall of the matched bearing seat 7, the inner side surface of the lip ring 12 is abutted against the inner side wall of the matched bearing seat 7, the outer walls of the snap rings 11 of all the L-shaped outer sealing rings 1 are tightly clamped on the inner circumferential wall of the matched bearing seat 7 through the L-shaped check rings 5, the outer rings 42 and the L-shaped check rings 5 of the sealing ring 3 and the bearing 4 and all the L-shaped outer sealing rings 1 are fixed together with the matched bearing seat 7 and can rotate around the axial lead of the matched shaft 8 along with the bearing seat 7, the lip edge 13 of the sealing ring 3 and the shaft 8 form contact sealing, and the lip edge 13 of the L-shaped outer sealing ring 1 of each compact labyrinth lip shaft The outer ring part 212 of the inner sealing ring 2 forms a contact seal, a labyrinth seal is formed between the spacer ring 22 of the T-shaped inner sealing ring 2 of each compact lip labyrinth shaft sealing unit and the peripheral L-shaped outer sealing ring 1 or the bearing 4, and the rest structures are omitted as described in the first embodiment.
The third embodiment is as follows: as shown in fig. 3, the shaft seal of the present invention includes a seal ring 3, a bearing 4, an L-shaped retainer ring 5 and a shaft spring retainer ring 6, the matched bearing seat 7, the seal ring 3, the bearing 4, the L-shaped retainer ring 5 and the shaft spring retainer ring 6 are all sleeved on the matched shaft 8, the seal ring 3, the bearing 4, the L-shaped retainer ring 5 and the shaft spring retainer ring 6 are all located in the matched bearing seat 7 and are sequentially arranged from inside to outside, and the present invention is characterized in that: the three sets of the compact lip labyrinth shaft sealing units are further included, and the rest structures are omitted as described in the second embodiment.
The fourth embodiment: as shown in fig. 4, the carrier roller of the invention comprises a shaft 8, a roller 9 and a roller skin 10, wherein two ends of the roller 9 are respectively provided with a bearing seat 7 and a shaft seal, the roller skin 10 is sleeved on the roller 9, the shaft 8 is inserted into the roller 9 and the bearing seats 7 and the shaft seals at the two ends of the roller, and the carrier roller is characterized in that: the shaft seal is the shaft seal according to the second or third embodiment, the roller skin 10 is a PE polymer roller skin, and is composed of a PE material outer roller skin 101, a reinforced steel wire mesh 102, and a PVC inner roller skin 103, and the rest of the structure is as described in the first embodiment, but not limited thereto.
The present invention includes, but is not limited to, the above embodiments, and any products according to the claims are within the scope of the present invention.
Claims (4)
1. The utility model provides a compact lip maze shaft seal unit, includes L type external seal circle, its characterized in that: the inner end face and the outer end face of the shaft sleeve ring of the T-shaped inner sealing ring are directly or indirectly clamped between the matched bearing inner ring and a spring retainer ring for the matched shaft and fixed on the matched shaft;
the L-shaped outer sealing ring comprises a clamping ring and a lip ring, the outer edge of the lip ring is fixedly connected to the outer edge of the clamping ring and integrally formed, an inward bent lip edge is arranged on the inner edge of the lip ring, the lip edge is sleeved and pressed on the outer ring part of the T-shaped inner sealing ring, the outer wall of the clamping ring of the L-shaped outer sealing ring is tightly clamped on the inner circumferential wall of the matched bearing seat through a matched L-shaped retaining ring, and the inner end face and the outer end face of the clamping ring of the L-shaped outer sealing ring are directly or indirectly clamped between the outer ring of the bearing and the matched L-shaped matched retaining ring and can rotate along with;
the lip edge of the L-shaped outer sealing ring and the outer ring part of the T-shaped inner sealing ring form contact sealing, and labyrinth sealing is formed between a spacer ring of the T-shaped inner sealing ring and the peripheral L-shaped outer sealing ring or a matched bearing.
2. The compact lip labyrinth shaft seal unit according to claim 1, characterized in that the inner ring portion of the T-shaped inner seal ring has an axial length smaller than the axial length of its outer ring portion.
3. The utility model provides a shaft seal, includes sealing washer, bearing, L type retaining ring and for the axle circlip, the bearing frame of adapted, sealing washer, bearing, L type retaining ring and for the axle circlip all overlap at the epaxial of adapted, and sealing washer, bearing, L type retaining ring and for the axle circlip all are located the bearing frame of adapted, and from inside to outside arrange its characterized in that in proper order: the lip labyrinth shaft sealing device further comprises two or more sets of the compact lip labyrinth shaft sealing units of claim 1 or 2, the compact lip labyrinth shaft sealing units are sleeved on the shaft between the bearing and the L-shaped check ring side by side, the lip ring of each compact lip labyrinth shaft sealing unit is positioned on the outer side of the spacer ring of the T-shaped inner sealing ring matched with the lip ring, the inner end surface of the shaft sleeve ring of the innermost compact lip labyrinth shaft sealing unit is abutted against the inner ring of the bearing, the outer end surface of the shaft sleeve ring of the outermost compact lip labyrinth shaft sealing unit is abutted against the spring check ring for the shaft, the inner ring of the bearing, the spring check ring for the shaft and all the T-shaped inner sealing rings are fixed together with the matched shaft,
the sealing ring comprises a clamping ring and a lip ring, the outer edge of the lip ring is fixedly connected to the inner edge of the clamping ring, the inner edge of the lip ring is provided with a lip edge which is bent outwards, the lip edge is sleeved on the matched shaft, the outer circumference of the clamping ring is clamped on the inner circumferential wall of the matched bearing seat, the inner side surface of the lip ring is propped against the inner side wall of the matched bearing seat, the outer wall of the clamping ring of all L-shaped outer sealing rings is tightly clamped on the inner circumferential wall of the matched bearing seat through the L-shaped check ring, the sealing ring, the outer ring of the bearing, the L-shaped check ring and all the L-shaped outer sealing rings are fixed together with the matched bearing seat and rotate around the axial lead of the matched shaft along with the matched bearing seat, the lip edge of the sealing ring forms contact sealing with the matched shaft, and the lip edge of the L-shaped outer sealing ring of each compact type lip edge shaft sealing unit forms contact, and a labyrinth seal is formed between a spacer ring of a T-shaped inner sealing ring of each compact lip labyrinth shaft sealing unit and a peripheral L-shaped outer sealing ring or the bearing.
4. The utility model provides a carrier roller, includes axle, roller and roller skin, the roller both ends are equipped with bearing frame and shaft seal respectively, the roller skin cover is in on the roller, the axle is used to wear roller and the bearing frame and the shaft seal at both ends, its characterized in that: the shaft seal is the shaft seal in claim 3, the roller skin is a PE polymer roller skin, and the roller skin is composed of an outer roller skin made of PE materials, a reinforced steel wire mesh and an inner roller skin made of PVC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011474842.2A CN112483554A (en) | 2020-12-14 | 2020-12-14 | Compact lip labyrinth shaft seal unit, corresponding shaft seal and corresponding carrier roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011474842.2A CN112483554A (en) | 2020-12-14 | 2020-12-14 | Compact lip labyrinth shaft seal unit, corresponding shaft seal and corresponding carrier roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112483554A true CN112483554A (en) | 2021-03-12 |
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ID=74916950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011474842.2A Pending CN112483554A (en) | 2020-12-14 | 2020-12-14 | Compact lip labyrinth shaft seal unit, corresponding shaft seal and corresponding carrier roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112483554A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113998421A (en) * | 2021-10-30 | 2022-02-01 | 安徽绩溪徽山链传动有限公司 | Self-lubricating material taking machine chain |
| CN114673729A (en) * | 2022-01-30 | 2022-06-28 | 山东省章丘鼓风机股份有限公司 | Combined labyrinth seal structure for bearing seat |
-
2020
- 2020-12-14 CN CN202011474842.2A patent/CN112483554A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113998421A (en) * | 2021-10-30 | 2022-02-01 | 安徽绩溪徽山链传动有限公司 | Self-lubricating material taking machine chain |
| CN114673729A (en) * | 2022-01-30 | 2022-06-28 | 山东省章丘鼓风机股份有限公司 | Combined labyrinth seal structure for bearing seat |
| CN114673729B (en) * | 2022-01-30 | 2023-11-24 | 山东省章丘鼓风机股份有限公司 | Combined labyrinth sealing structure for bearing pedestal |
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