CN1696548A

CN1696548A - Labyrinth type sealing arrangement for supporting roller

Info

Publication number: CN1696548A
Application number: CN 200410010253
Authority: CN
Inventors: 孙明昭
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-11
Filing date: 2004-05-11
Publication date: 2005-11-16

Abstract

The present invention discloses a labyrinth carrier roler sealing device. It includes external sealing cap of carrier roller and its external sealing ring, the seal edge of said carrier roller external sealing cap is inserted into the external sealing ring and matched with it, and on the seal edge of said carrier roller external sealing cap a direction-changing sealing device is set.

Description

Mazy type carrying roller seal arrangement

Technical field

The present invention relates to a kind of seal arrangement, especially a kind of mazy type carrying roller seal arrangement.

Background technique

Traditional carrying roller labyrinth-type excluder comprises carrying roller, pedestal, external sealed lid and exterior seal ring, and two of outer sealing cover of the labyrinth sealing of carrying roller and exterior seal rings play mutual embedding along support roller shaft to the boss that forms and form.Because gravitational principle, carrying roller is when high speed rotating, and trickle, dust and coal slime etc. still can progress into along the maze-type structure of mutual embedding in the middle of the seal ring, until the bearing in the carrying roller is polluted, causes carrying roller to lose efficacy.

Summary of the invention

The mazy type carrying roller seal arrangement that the purpose of this invention is to provide a kind of novel structure, good seal performance.

Technological scheme of the present invention is: a kind of mazy type carrying roller seal arrangement, comprise that the carrying roller external sealed covers, exterior seal ring, and the sealing of carrying roller external sealed lid cooperates along embedding with exterior seal ring, is provided with the changed course seal arrangement on the sealing edge of carrying roller external sealed lid.

The changed course seal arrangement is made up of along the bulge loop on last changed course seal ring and its side face the sealing that is sleeved on carrying roller external sealed lid.

The changed course seal arrangement is made up of along the bulge loop on the side face the sealing of carrying roller external sealed lid.

Cover at the carrying roller external sealed and to be provided with scraper.

At the bulge loop trailing flank seal washer is housed, on seal washer, is provided with retainer ring.

Bulge loop is plane or inclined-plane or cambered surface.

Scraper is more than one convex column.

After adopting technique scheme, make carrying roller when high speed rotating, can be near the changed course seal arrangement time with pollutants such as trickle, dust and coal slimes, change their (motion) direction that flows, make them can not enter into the seal ring of carrying roller and pollute the bearing of carrying roller, guaranteed the working life of carrying roller.

Encapsulating method of the present invention is: at the outermost end place of carrying roller labyrinth sealing circle, be provided with one and be assembled into the changed course seal ring of one with carrying roller, establish a vertical boss ring on the changed course seal ring, this vertical boss ring and carrying roller are rotations synchronously.Carrying roller is when high speed rotating, and boss ring action of centrifugal force can form " vacuum wall " together with the micro-gap between the circumference of boss ring and the static exterior seal ring wall; Clearance Flow (motion) above seal ring such as trickle, dust and coal slime are during to the vertical boss ring of changed course seal ring, be subjected to stopping of boss ring, can not be again along axial flow (motion), and under boss ring action of centrifugal force, (motion) direction that flows is just vertical by axially changing into.Change the pollutant after the direction, run into the static seal ring wall in outside after, cannot get through " vacuum wall ", the Clearance Flow below seal ring (motion) that will nature is come out.In addition, the gap of the seal ring wall that this vertical boss ring and outside are static can not change when the carrying roller axial float.Therefore, bring great convenience for the assembling of carrying roller.In addition, can also increase a felt circle that slightly rubs with the static seal ring wall in outside in the vertical outside of boss ring, and the felt circle is fixed with retainer ring, like this, though the rotational resistance of carrying roller is some increase a little, but its sealing effect will be better, can use in immersion or other particular surroundings.Vertical boss ring on the changed course seal ring outer circumferential face can be plane or arbitrary shapes such as inclined-plane or cambered surface, and function is identical.

Advantage of the present invention is: utilize the method that changes mobile (motion) direction of object, stoped trickle, dust, coal slime etc. under the effect of principle of gravitation, produce axial flow (motion) and enter trend in the carrying roller sealing configuration, effectively guarantee and prolonged the normal working life of carrying roller middle (center) bearing (carrying roller just).

Description of drawings

Fig. 1 is first kind of structural representation of the present invention,

Fig. 1-1 is the plan view of Fig. 1,

Fig. 2 is the external sealed lid of carrying roller,

Fig. 2-2 is the plan view of Fig. 2;

Fig. 3 is the exterior seal ring of carrying roller,

Fig. 3-3 is the plan view of Fig. 3;

Fig. 4 is a seal washer

Fig. 4-4 is the plan view of Fig. 4;

Fig. 5 is a retainer ring,

Fig. 5-5 is the plan view of Fig. 5;

Fig. 6 is first kind of structure erection drawing of carrying roller,

Fig. 7 is second kind of structural representation of the present invention,

Fig. 8 is second kind of structure erection drawing of carrying roller.

Embodiment

First kind of structure of the present invention such as Fig. 1-shown in Figure 6: comprise pedestal 10, with pedestal 10 matching used bearing caps 7, bearing 9, seal ring 8, back-up ring 6, support roller shaft 11, carrying roller pipe fitting 12, carrying roller external sealed lid 2, exterior seal ring 3, the sealing of carrying roller external sealed lid 2 cooperates along embedding with exterior seal ring 3, be provided with the changed course seal arrangement of being made up of changed course seal ring 1 on the sealing edge that is sleeved on carrying roller external sealed lid and the bulge loop 14 on its side face on the sealing edge of carrying roller external sealed lid, bulge loop 14 can be designed to plane or inclined-plane or cambered surface.Cover at the carrying roller external sealed and to be provided with an above scraper 13.At bulge loop 14 trailing flanks seal washer 15 is housed, on seal washer 15, is provided with retainer ring 16.

During assembling Fig. 2 carrying roller external sealed covered after 2 interference are contained on the carrying roller, Fig. 1 seal ring 1 that alters course tightly is enclosed within on Fig. 2 carrying roller external sealed lid 2, Fig. 3 carrying roller exterior seal ring 3 is installed along support roller shaft 11 get final product again.Increase Fig. 4 seal washer 15 (felt circle) if desired, then before unassembled exterior seal ring 3, Fig. 4 seal washer 15 (felt circle) is enclosed within Fig. 1 alters course on the seal ring 1, then, Fig. 5 retainer ring 16 also tightly is enclosed within Fig. 1 alters course and get final product on the seal ring 1.

Carrying roller is in running during work, and alter course seal ring 1 and carrying roller of Fig. 1 rotates synchronously, and the exterior seal ring of carrying roller is static.Work as water, mud and all contaminations flow (motion) when altering course seal ring 1, the boss ring 14 of changed course on the seal ring 1 at first stop they can not be again along the axial flow (motion) of carrying roller, and under boss ring 14 action of centrifugal force, force them to change former axial (motion) direction that flows, be thrown toward very soon boss ring 14 around, these pollutants will stop when running into static exterior seal ring inwall, " vacuum wall " that they form when also cannot get through boss ring 14 high speed rotating, the gap below seal ring again that will nature flows out to the outside of sealing configuration.

Second kind of structure of the present invention such as Fig. 7, shown in Figure 8:

Comprise pedestal 10, with pedestal 10 matching used bearing caps 7, bearing 9, seal ring 8, back-up ring 6, support roller shaft 11, carrying roller pipe fitting 12, carrying roller external sealed lid 2, exterior seal ring 3, the sealing of carrying roller external sealed lid 2 cooperates along embedding with exterior seal ring 3, is provided with the changed course seal arrangement of being made up of along the bulge loop on the side face 14 sealing of carrying roller external sealed lid on the sealing edge of carrying roller external sealed lid 2.At the bulge loop trailing flank seal washer 15 is housed, on seal washer 15, is provided with retainer ring 16.On carrying roller external sealed lid 2, be provided with the scraper that constitutes by more than one convex column 13.

Claims

1, a kind of mazy type carrying roller seal arrangement comprises that the carrying roller external sealed covers, exterior seal ring, and the sealing of carrying roller external sealed lid cooperates along embedding with exterior seal ring, it is characterized in that: be provided with the changed course seal arrangement on the sealing edge of carrying roller external sealed lid.

2, mazy type carrying roller seal arrangement according to claim 1 is characterized in that: the changed course seal arrangement is made up of along the bulge loop on last changed course seal ring and its side face the sealing that is sleeved on carrying roller external sealed lid.

3, mazy type carrying roller seal arrangement according to claim 1 is characterized in that: the changed course seal arrangement is made up of along the bulge loop on the side face the sealing of carrying roller external sealed lid.

4, mazy type carrying roller seal arrangement according to claim 1 is characterized in that: cover at the carrying roller external sealed and be provided with scraper.

5, according to claim 2 or 3 described mazy type carrying roller seal arrangements, it is characterized in that: at the bulge loop trailing flank seal washer is housed, on seal washer, is provided with retainer ring.

6, mazy type carrying roller seal arrangement according to claim 5 is characterized in that: bulge loop is plane or inclined-plane or cambered surface.

7, mazy type carrying roller seal arrangement according to claim 4, it is characterized in that: scraper is more than one convex column.