CN212645314U - Oil leakage prevention rotary kiln riding wheel sealing mechanism - Google Patents

Abstract

The utility model discloses an oil leakage prevention rotary kiln riding wheel sealing mechanism, a ring-shaped element is movably sleeved outside a riding wheel shaft, and the cross section of the ring-shaped element is in a U shape with an opening facing the riding wheel shaft; the sealing rubber ring is movably sleeved outside the riding wheel shaft and is positioned in the inner space of the annular part; the sealing rubber ring is attached to the inner wall of the annular piece; a circle of first grooves are formed in the circumferential surface, away from the riding wheel shaft, of the sealing rubber ring, annular elastic pieces are arranged in the first grooves, a plurality of second grooves are formed in the circumferential surface, attached to the riding wheel shaft, of the sealing rubber ring, and the second grooves are arranged along the axial direction of the riding wheel shaft; a plurality of jackscrew through holes are formed in the radial side surface of the annular piece along the circumference, jackscrew blind holes are formed in the radial side surface of the sealing rubber along the circumference, and jackscrews penetrate through the jackscrew through holes and are pressed into the jackscrew blind holes; and sealing grease is filled in the second groove, and the sealing grease is coated between the sealing rubber ring and the riding wheel shaft. This mechanism realizes that sealing rubber circle and annular member are fixed relatively, optimizes sealing rubber circle, has promoted sealing performance.

Description

Oil leakage prevention rotary kiln riding wheel sealing mechanism

Technical Field

The utility model belongs to the technical field of cement clinker production facility, especially a leak protection oil rotary kiln riding wheel sealing mechanism.

Background

In the existing rotary kiln riding wheel shaft sealing device, a Y-shaped rubber sealing ring with a tangent plane is placed in a sealing flange ring of a shell on the inner side of a riding wheel, a spring is pressed in from the sealing rubber ring along the radial direction, and the rubber is tightly attached to the riding wheel through the elasticity of the spring, so that the aims of dust prevention and oil leakage prevention are fulfilled. However, the sealing rubber ring of the riding wheel seal is easy to wear in the use process, and the service life is short, so that the riding wheel of the rotary kiln has poor dustproof and oil leakage prevention effects; the spring is easy to loosen during the operation of the equipment and finally extends out of the shell, so that serious accidents such as the injury of a riding wheel shaft of the rotary kiln and the tile pulling happen, and the normal operation of an enterprise is seriously influenced; because the sealing device can not be fixed in the circumferential direction, the sealing always rotates along with the riding wheel shaft; the sealing maintenance and replacement operation is inconvenient.

In the prior granted patent, for example, CN203881116U provides a sealing mechanism for a trunnion shaft of a rotary kiln of a clinker calcining equipment of a cement clinker line, wherein a rubber sealing ring with an H-shaped section is selected, an annular self-tightening spring is arranged in a groove at the top of the rubber sealing ring, and the rubber sealing ring is pressed on the surface of the trunnion shaft to realize sealing through the radial contraction pressure drop of the annular self-tightening spring. For example, in the sealing structure of the rotary kiln and the idler shaft thereof provided by patent CN205245775U, the elastic member with two ends connected to form the annular structure is embedded in the mounting hole of the sealing strip, and the two ends of the sealing strip are butted to form the annular structure to be sleeved on the idler shaft. In addition, because the riding wheel axially moves back and forth on the riding wheel shaft, when dust is adhered to the riding wheel shaft, the dust easily enters the lower groove of the sealing rubber ring with the H-shaped section, and the abrasion of the rubber ring is accelerated.

Disclosure of Invention

In order to solve the problems of the prior art, the utility model provides a device, which is realized by the following technical scheme.

The oil leakage prevention rotary kiln riding wheel sealing mechanism comprises a riding wheel shaft, a ring-shaped element and a sealing rubber ring, wherein the ring-shaped element is movably sleeved outside the riding wheel shaft, and the cross section of the ring-shaped element is U-shaped with an opening facing the riding wheel shaft; the sealing rubber ring is movably sleeved outside the riding wheel shaft and is positioned in the inner space of the annular part; the sealing rubber ring is attached to the inner wall of the annular piece; a circle of first grooves are formed in the circumferential surface, away from the riding wheel shaft, of the sealing rubber ring, annular elastic pieces are arranged in the first grooves, a plurality of second grooves are formed in the circumferential surface, attached to the riding wheel shaft, of the sealing rubber ring, and the second grooves are arranged along the axial direction of the riding wheel shaft; a plurality of jackscrew through holes are formed in the radial side surface of the annular piece along the circumference, threads are arranged in the jackscrew through holes, jackscrew blind holes are formed in the radial side surface of the sealing rubber along the circumference, and jackscrews penetrate through the jackscrew through holes and are pressed into the jackscrew blind holes; and sealing grease is filled in the second groove, and the sealing grease is coated between the sealing rubber ring and the riding wheel shaft.

The rotary kiln supporting wheel sealing mechanism is arranged on one side of the supporting wheel seat in a detachable mode, and flange bolt connection is common in the detachable mode. The supporting wheel shaft rotates relative to the supporting wheel seat and the sealing mechanism, and in order to avoid local abrasion of the belt and the supporting wheel, the design requires that the belt and the supporting wheel axially reciprocate, so that the supporting wheel and the supporting wheel shaft rotate relative to the bearing surface of the supporting wheel seat and also axially reciprocate, and the amplitude of the axial reciprocation is +/-10-15 mm. The ring-shaped piece is sleeved on the riding wheel shaft, the section of the ring-shaped piece is in an inverted U shape, a sealing rubber ring is arranged in the inner space of the ring-shaped piece, the sealing rubber ring is in a shape similar to an H shape, namely a first groove is formed in the outer wall, away from the riding wheel shaft, of the sealing glue; the difference from the prior art is that a plurality of second grooves are arranged close to the inner wall of the idler shaft and are arranged along the axial direction of the idler shaft. The annular elastic piece arranged in the first groove generates radial pressure on the sealing rubber ring, and the sealing rubber ring is pressed on the supporting roller shaft, namely the groove wall of the second groove is attached to the supporting roller shaft, so that the elastic piece is prevented from extending out of the sealing mechanism, and the problems of injury and tile pulling of the supporting roller shaft of the rotary kiln are solved. The space of the second groove is filled with sealing grease, the sealing grease is also coated between the sealing rubber ring and the supporting roller shaft, when the supporting roller shaft rotates relative to the supporting roller seat and the sealing mechanism and moves in a reciprocating mode, external dust and impurities are blocked outside the sealing mechanism and prevented from entering between the supporting roller shaft and the sealing rubber ring, abrasion of the sealing rubber ring in the sealing mechanism is reduced, and the second groove plays a role in lubricating and preventing dust while playing a role in an oil storage tank. When the sealing grease is gradually consumed, the sealing grease in the second groove is slowly coated between the idler shaft and the sealing rubber ring due to the action of gravity. If only set up 1 second recess and the second recess is too dark too big according to prior art, sealed grease can slowly flow because of the action of gravity, and the lower surface at the riding wheel axle can be gathered gradually to most sealed grease after long-term the operation, influences long-term sealed effect. The annular piece and the sealing rubber ring are relatively fixed through the jackscrew, so that the annular piece is prevented from being driven by the riding wheel shaft to rotate together. The structure of the sealing mechanism can realize long-time sealing to prevent dust from entering between the riding wheel shaft and the sealing element and between the riding wheel seat to cause abrasion, and can also facilitate the disassembly of the whole sealing mechanism, and conveniently replace the annular elastic element and the sealing rubber ring.

Preferably, the cross section of each second groove is square, and the groove walls of two adjacent second grooves are square.

Preferably, the cross section of the second groove is preferably arc-shaped. The preferred arc shape is the arc with the arc length larger than the semicircle, and the shape of the second groove can better store the sealing grease.

Preferably, the cross section of a plurality of the second grooves is saw-toothed.

Preferably, the annular member includes a circumferential annular plate, a first radial plate, and a second radial plate, and the first radial plate and the second radial plate are fixed on both sides of the circumferential annular plate by a plurality of bolts arranged in the circumferential direction. The inverted U-shaped annular piece is formed by splicing three annular plates, and the splicing mode is bolt connection.

Preferably, the annular elastic member is an annular spring connected end to end.

Preferably, the head end and the tail end of the annular spring are hooked and connected through hooks.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the sealing rubber ring and the annular piece are relatively fixed through the jackscrew, so that the sealing rubber ring and the riding wheel shaft are prevented from rotating together to influence the sealing effect;

2. the sealing performance of the sealing mechanism is improved by optimizing the structural shape of the sealing rubber ring;

3. the whole device is convenient to disassemble, assemble and replace.

Drawings

Fig. 1 is a schematic structural view of a supporting roller sealing mechanism of an oil leakage preventing rotary kiln in embodiment 1;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1 at A;

fig. 3 is a schematic structural view of a supporting roller sealing mechanism of an oil leakage preventing rotary kiln in embodiment 2;

FIG. 4 is a partial schematic view of FIG. 3 at B;

in the figure: 1. a riding wheel shaft; 2. an annular member; 3. sealing the rubber ring; 4. a first groove; 401. an annular spring; 5. a second groove; 6. a trench wall; 7. a jackscrew through hole; 8. a jackscrew blind hole; 9. carrying out top thread; 10. sealing grease; 11. a circumferential annular plate; 12. a first radial plate; 13. a second radial plate; 14. and (4) bolts.

Detailed Description

The technical solutions of the embodiments in this patent will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments, not all embodiments, of this patent. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the patent without making creative efforts, shall fall within the protection scope of the patent.

In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the patent and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the patent. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of this patent, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. It is to be noted that all the figures are exemplary representations. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.

The patent is described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Example 1

As shown in fig. 1 and 2, the oil leakage preventing rotary kiln riding wheel sealing mechanism provided in this embodiment includes a riding wheel shaft 1, a ring member 2, and a sealing rubber ring 3, wherein the ring member 2 is movably sleeved outside the riding wheel shaft 1, and a cross section of the ring member 2 is U-shaped with an opening facing the riding wheel shaft 1; the sealing rubber ring 3 is movably sleeved outside the riding wheel shaft 1 and is positioned in the inner space of the annular part 2; the sealing rubber ring 3 is attached to the inner wall of the annular piece 2; a circle of first grooves 4 are formed in the circumferential face, far away from the riding wheel shaft 1, of the sealing rubber ring 3, annular springs 401 are arranged in the first grooves 4, 2 second grooves 5 are formed in the circumferential face, attached to the riding wheel shaft 1, of the sealing rubber ring 3, the second grooves 5 are arranged in the second grooves 5 along the axial direction of the riding wheel shaft 1, the cross sections of the second grooves 5 are square, and the groove walls 6 of every two adjacent second grooves 5 are square; a plurality of jackscrew through holes 7 are formed in the radial side face of the annular piece 2 along the circumference, threads are arranged in the jackscrew through holes 7, jackscrew blind holes 8 are formed in the radial side face of the sealing rubber ring 3 along the circumference, and jackscrews 9 penetrate through the jackscrew through holes 7 and are pressed into the jackscrew blind holes 8; and sealing grease 10 is filled in the second groove 5, and the sealing grease 10 is coated between the sealing rubber ring 3 and the riding wheel shaft 1.

The rotary kiln supporting wheel sealing mechanism is arranged on one side of the supporting wheel seat, and the annular ring of the rotary kiln supporting wheel sealing mechanism is connected to the side face of the supporting wheel seat through the flange bolt. When the riding wheel and the riding wheel shaft rotate together relative to the riding wheel seat and the sealing mechanism and reciprocate axially, external dust and impurities are blocked outside the sealing mechanism, so that the dust and the impurities are prevented from entering between the riding wheel shaft and the sealing rubber ring, and the abrasion of the sealing rubber ring in the sealing mechanism is reduced. In order to avoid local abrasion of the belt and the riding wheel, the design requires that the belt and the riding wheel axially reciprocate, so that the riding wheel and the riding wheel shaft axially reciprocate while rotating relative to the riding wheel seat, and the amplitude of the axial reciprocation is +/-10-15 mm. The ring-shaped piece is sleeved on the riding wheel shaft, the section of the ring-shaped piece is in an inverted U shape, a sealing rubber ring is arranged in the inner space of the ring-shaped piece, the sealing rubber ring is in a shape similar to an H shape, namely a first groove is formed in the outer wall, away from the riding wheel shaft, of the sealing glue; the difference from the prior art is that a plurality of second grooves are arranged close to the inner wall of the idler shaft and are arranged along the axial direction of the idler shaft. The annular spring that sets up in the first recess produces radial pressure to the sealing rubber circle, compresses tightly the sealing rubber circle on the riding wheel axle, and the cell wall and the riding wheel axle laminating of second recess have just so avoided the elastic component to stretch out from sealing mechanism, prevent rotary kiln riding wheel axle injury and draw the problem such as tile. The space of the second groove is filled with sealing grease, the sealing grease is also coated between the sealing rubber ring and the supporting wheel shaft, when the supporting wheel shaft rotates relative to the supporting wheel seat and the sealing mechanism, and when the supporting wheel shaft reciprocates, external dust and impurities are blocked outside the sealing mechanism to prevent from entering between the supporting wheel shaft and the supporting wheel seat, the abrasion of the supporting wheel shaft is reduced, the second groove actually plays a role of an oil storage tank, and when the sealing grease is gradually consumed, the sealing grease in the second groove is slowly coated between the supporting wheel shaft and the sealing rubber ring due to the action of gravity. If only set up 1 second recess and the second recess is too dark too big according to prior art, sealed grease can slowly flow because of the action of gravity, and the lower surface at the riding wheel axle can be gathered gradually to most sealed grease after long-term the operation, influences long-term sealed effect. The annular piece and the sealing rubber ring are relatively fixed through the jackscrew, so that the annular piece is prevented from being driven by the riding wheel shaft to rotate together. The structure of the sealing mechanism can realize long-time sealing to prevent dust from entering between the riding wheel shaft and the sealing element and between the riding wheel seat to cause abrasion, and can also facilitate the disassembly of the whole sealing mechanism, and conveniently replace the annular elastic element and the sealing rubber ring.

Example 2

As shown in fig. 3 and 4, the oil leakage preventing rotary kiln riding wheel sealing mechanism provided in this embodiment is different from embodiment 1 in that the sealing mechanism and the riding wheel seat are connected by bolts, and the cross section of the second groove 5 is preferably arc-shaped. Preferably, the arc shape, i.e. the arc length is larger than that of a semicircle, and the shape of the second groove 5 can better store the sealing grease. The annular part 2 comprises a circumferential annular plate 11, a first radial plate 12 and a second radial plate 13, wherein the first radial plate 12 and the second radial plate 13 are fixed on two sides of the circumferential annular plate 11 through a plurality of bolts 14 arranged in the circumferential direction. The annular piece 2 of "U" shape is formed by three annular plates concatenations, and the mode of concatenation is bolted connection, more convenient dismantlement installation.

The above embodiments describe the implementation of the present invention in detail, however, the present invention is not limited to the specific details of the above embodiments. Within the scope of the claims and the technical idea of the present invention, various simple modifications and changes can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

Claims (7)

1. The oil leakage prevention rotary kiln riding wheel sealing mechanism is characterized by comprising a riding wheel shaft, an annular piece and a sealing rubber ring, wherein the annular piece is movably sleeved outside the riding wheel shaft, and the section of the annular piece is U-shaped with an opening facing the riding wheel shaft; the sealing rubber ring is movably sleeved outside the riding wheel shaft and is positioned in the inner space of the annular part; the sealing rubber ring is attached to the inner wall of the annular piece; a circle of first grooves are formed in the circumferential surface, away from the riding wheel shaft, of the sealing rubber ring, annular elastic pieces are arranged in the first grooves, a plurality of second grooves are formed in the circumferential surface, attached to the riding wheel shaft, of the sealing rubber ring, and the second grooves are arranged along the axial direction of the riding wheel shaft; a plurality of jackscrew through holes are formed in the radial side surface of the annular piece along the circumference, threads are arranged in the jackscrew through holes, jackscrew blind holes are formed in the radial side surface of the sealing rubber along the circumference, and jackscrews penetrate through the jackscrew through holes and are pressed into the jackscrew blind holes; and sealing grease is filled in the second groove, and the sealing grease is coated between the sealing rubber ring and the riding wheel shaft.

2. The oil-leakage-preventing rotary kiln riding wheel sealing mechanism as claimed in claim 1, wherein the cross section of the second groove is square, and the groove walls of two adjacent second grooves are square.

3. The oil-leakage-preventing rotary kiln riding wheel sealing mechanism as claimed in claim 1, wherein the cross section of the second groove is preferably arc-shaped.

4. The oil-leakage-preventing rotary kiln riding wheel sealing mechanism as claimed in claim 1, wherein the sections of the second grooves are zigzag.

5. The oil-leakage-preventing rotary kiln riding wheel sealing mechanism as claimed in any one of claims 1 to 4, wherein the annular member comprises a circumferential annular plate, a first radial plate and a second radial plate, and the first radial plate and the second radial plate are fixed on two sides of the circumferential annular plate through a plurality of bolts arranged in the circumferential direction.

6. The oil-leakage-preventing rotary kiln riding wheel sealing mechanism as claimed in any one of claims 1 to 4, wherein the annular elastic member is an annular spring connected end to end.

7. The oil-leakage-preventing rotary kiln riding wheel sealing mechanism as claimed in claim 6, wherein the two ends of the annular spring are hooked by hooks.

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