CN215110494U - Reinforced box shaft sealing structure - Google Patents

Abstract

The utility model relates to a strenghthened type case axle seal structure, including seal receptacle and sealing washer, its technical essential is: the axial position that the main shaft is close to box curb plate inner wall is fixed with the dust guard, the dust guard is by locating the epaxial sleeve of main shaft, locate the disc at sleeve periphery middle part, locate the protruding I of peach-shaped dust drive on a terminal surface of disc, locate the protruding II of peach-shaped dust drive on another terminal surface of disc and constitute, the position that box curb plate inner wall corresponds the dust guard top is fixed with the inner seal welt in addition, the dust guard is located between inner seal welt and the box curb plate inner wall in the main shaft axial, the lower extreme of inner seal welt is equipped with the n shape that corresponds the main shaft and dodges the mouth. The utility model provides a life that current axle box seal structure exists short, change long and the big problem of intensity of labour consuming time, the easy operation is maintained in the maintenance, has both prolonged life, has reduced intensity of labour again, is showing the sealed effect of reinforcing simultaneously.

Description

Reinforced box shaft sealing structure

Technical Field

The utility model relates to a seal structure between case axles such as breaker, coal breaker, screening machine, concretely relates to strenghthened type case axle seal structure.

Background

At present, for equipment operating under the condition of high-concentration dust, such as a crusher, a coal crusher, a sieving machine and the like, the sealing form between a main shaft and a box body mainly comprises the following points: 1. and a sealing ring is arranged between the contact surfaces of the main shaft and the box body to realize sealing. Although the sealing ring is made of different materials, the sealing ring is easy to age in a working environment with high-concentration dust, and the service life of the sealing ring is relatively short. 2. Some sealing assemblies adopt the structural form of an oil seal or an O-shaped ring, the operation is relatively difficult when the sealing ring is replaced by the structure, and particularly when the shaft sealing ring of the multi-shaft sieving machine is replaced, the sealing ring of each shaft needs to be replaced, the time is too long, and the labor intensity is very high. 3. Some seal assemblies adopt a felt type structure, the structure is relatively easy when a sealing element is replaced, the consumed time is short, the labor intensity is low, but the service life of the felt seal in a high-concentration dust environment is very short, the periodic frequency of replacing the sealing element is high, and the annual maintenance time is not reduced. 4. Adopt the seal assembly of mechanical labyrinth form, the sealed effect and the intensity of labour of this mode are better than above a little, but always will have the infiltration of trace dust and be difficult for discovering in the labyrinth of this kind of form, and the gap in the final meeting of accumulating in the maze leads to the axle jam not to rotate, and the main shaft generates heat, has certain potential safety hazard.

Disclosure of Invention

The utility model aims at providing a simple structure, use reliable strenghthened type case axle seal structure, the problem that life is short, change length consuming time and intensity of labour are big that the current axle box seal structure of solution exists, the easy operation is maintained in the maintenance, has both prolonged life, has reduced intensity of labour again, is showing the sealed effect of reinforcing simultaneously.

The technical scheme of the utility model is that:

the utility model provides a strenghthened type case axle seal structure, is including being fixed in the seal receptacle of box curb plate outer wall, locating in the seal receptacle and with main shaft in close contact with's sealing washer, its technical essential is: the axial position that the main shaft is close to box curb plate inner wall is fixed with the dust guard, the dust guard comprises locating main epaxial sleeve, locating the disc at sleeve periphery middle part, evenly locating a plurality of peach shape on the terminal surface of disc and driving protruding I, evenly locating a plurality of peach shape on another terminal surface of disc and driving protruding II, peach shape drives protruding I and the protruding II structural dimension of peach shape and driving protruding II the same of dirt, the position that box curb plate inner wall corresponds the dust guard top is fixed with the inside seal welt in addition, the dust guard is located between inside seal welt and the box curb plate inner wall in the main shaft axial, and the upper end of inside seal welt is buckled and is connected with box curb plate inner wall to box curb plate inner wall, and the left and right sides and the lower extreme of inside seal welt are naturally put and are not contacted with any part, and the lower extreme of inside seal welt is equipped with the n shape that corresponds the main shaft and dodges the mouth.

Foretell strenghthened type case axle seal structure, protruding I of peach-shaped dust drive and the protruding II of peach-shaped dust drive arrange in main shaft circumference in turn, and the protruding I of peach-shaped dust drive meets with the sleeve periphery with the protruding wide top of II of peach-shaped dust drive, and the protruding I of peach-shaped dust drive and the protruding sharp-end of II of peach-shaped dust drive extend to the edge of disc.

In the reinforced box shaft sealing structure, the distance from the lower end edge of the inner sealing lining plate to the axial lead of the main shaft is more than 50 mm.

In the reinforced box shaft sealing structure, the distance from the dust guard plate to the inner wall of the side plate of the box body is 3-5 mm, and the distance from the dust guard plate to the inner sealing lining plate is 3-5 mm.

In the reinforced box shaft sealing structure, the sleeve is in key connection with the main shaft, and the main shaft is provided with the shaft shoulder and the check ring corresponding to the sleeve so as to realize positioning of the sleeve.

The reinforced box shaft sealing structure is characterized in that the sealing seat comprises a seat body and a gland, and the sealing ring is embedded in the seat body and is compressed by the gland.

In the reinforced box shaft sealing structure, the sealing ring is a felt sealing ring.

Foretell strenghthened type case axle seal structure, the dust guard is wear-resisting steel material.

The utility model has the advantages that:

1. through the structural cooperation of box curb plate inner wall, dust guard and inner seal welt, prevent that the dust from getting into the region that the main shaft is close to the box curb plate, main shaft rotary work in the box, the dust guard is rotatory along with the main shaft, and protruding I of peach-shaped dust driving and protruding II of peach-shaped dust driving produce the wind pressure of centrifugal direction and the propelling movement force of centrifugal direction when rotatory, will get into the dust in dust guard place region and push away from the main shaft beyond the main shaft and keep away from the main shaft. Therefore, the phenomenon that no or extremely trace dust enters a gap between the main shaft and the box body is ensured, the sealing effect is obviously enhanced, the dust is prevented from invading the sealing ring in a large amount, the problems of short service life, long replacement time consumption and high labor intensity of the conventional axle box sealing structure are solved, the service life of the sealing structure is prolonged, and the labor intensity of maintenance is reduced.

2. The felt sealing ring in the sealing seat outside the box body further separates overflow of residual dust, the felt sealing ring works in a clean environment all the time under the effect of the dust guard plate, the felt sealing ring is free of dust invasion, the service life is greatly prolonged, only the felt sealing ring needs to be periodically filled with oil, the felt sealing ring does not need to be frequently replaced, and even if the sealing ring is replaced, the operation is also simple and convenient.

3. The dust guard can be made of wear-resistant steel, the service life of the dust guard is similar to that of the main shaft, and maintenance and repair are hardly needed.

Drawings

Fig. 1 is a schematic view of the usage state of the present invention;

FIG. 2 is a view taken from the direction A of FIG. 1;

FIG. 3 is a front view of the dust shield;

FIG. 4 is a rear view of FIG. 3;

in the figure: 1. the dust removing device comprises a box body side plate, 2 bolt pairs, 3 seat bodies, 4 gland covers, 5 sealing rings, 6 retaining rings, 7 main shafts, 8 sleeves, 9 peach-shaped dust removing bulges I, 10 inner sealing lining plates, 11 peach-shaped dust removing bulges II, 12 keys and 13 disks.

Detailed Description

As shown in fig. 1-4, the reinforced box shaft sealing structure includes a sealing seat fixed on the outer wall of the box body side plate 1, and a sealing ring 5 disposed in the sealing seat and in close contact with a main shaft 7. The cooperation of sealing washer 5 and main shaft 7 is the utility model one of them department's sealing means of seal structure.

Another key sealing measure is: the axial position that main shaft 7 is close to 1 inner wall of box curb plate is fixed with the dust guard, the dust guard comprises sleeve 8, the disc 13 of locating 8 periphery middle parts of sleeve on the main shaft 7, evenly locate a plurality of peach-shaped on 13 terminal surfaces of disc and drive protruding I9 of dirt, evenly locate a plurality of peach-shaped on 13 another terminal surfaces of disc and drive protruding II 11 of dirt. The peach-shaped dust-removing bulge I9 and the peach-shaped dust-removing bulge II 11 are identical in structure size. An inner sealing lining plate 10 is additionally fixed on the inner wall of the box body side plate 1 corresponding to the position above the dustproof plate, and the dustproof plate is positioned between the inner sealing lining plate 10 and the inner wall of the box body side plate 1 in the axial direction of the main shaft 7. The upper end of the inner sealing lining plate 10 is bent towards the inner wall of the box body side plate 1 and is connected with the inner wall of the box body side plate 1 by using the bolt pair 2, the left, right and lower ends of the inner sealing lining plate 10 are naturally placed without contacting with any part, and the lower end of the inner sealing lining plate 10 is provided with an n-shaped avoiding opening corresponding to the main shaft 7.

In this embodiment, the peach-shaped dust-removing protrusions i 9 and the peach-shaped dust-removing protrusions ii 11 are alternately arranged in the circumferential direction of the main shaft 7, the wide starting ends of the peach-shaped dust-removing protrusions i 9 and the peach-shaped dust-removing protrusions ii 11 are connected with the periphery of the sleeve 8, and the pointed ends of the peach-shaped dust-removing protrusions i 9 and the peach-shaped dust-removing protrusions ii 11 extend to the edge of the disc 13. The surface of the disc 13 is flat and smooth, and the outer edges of the peach-shaped dust-removing bulges I9 and II 11 are continuous and smooth. The distance from the dust guard to the inner wall of the side plate 1 of the box body is 3 mm-5 mm, and the distance from the dust guard to the inner sealing lining plate 10 is 3 mm-5 mm. The distance from the lower end edge of the inner sealing lining plate 10 to the axial lead of the main shaft 7 is more than 50 mm.

The sleeve 8 is connected with the main shaft 7 through a key 12, and a shaft shoulder and a retainer ring 6 corresponding to the sleeve 8 are arranged on the main shaft 7 to position the sleeve 8. The sealing seat comprises a seat body 3 and a gland 4, and the sealing ring 5 is embedded in the seat body 3 and is compressed by the gland 4. The sealing ring 5 is a felt sealing ring. The dust guard is wear-resisting steel material.

When in use, referring to fig. 2, a plurality of main shafts 7 are arranged in the box body, and each main shaft 7 and the box body are respectively provided with the sealing structure of the utility model. The dust guard plate rotates along with the main shaft 7, when dust enters an area where the dust guard plate is located in advance, the peach-shaped dust driving bulges I9 and the peach-shaped dust driving bulges II 11 on the dust guard plate push the dust away from the main shaft 7 and far away from the main shaft 7, and therefore the situation that no dust exists in a gap between the main shaft 7 and the side plate 1 of the box body or extremely trace dust enters the gap is guaranteed; even if a small amount of dust overflows, the dust is further separated by the felt sealing ring in the sealing seat, so that the dust in the box body is prevented from overflowing to the outer side of the box body, and the requirement on environmental protection is met.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.

Claims (8)

1. The utility model provides a strenghthened type case axle seal structure, including the seal receptacle that is fixed in box curb plate outer wall, locate in the seal receptacle and with main shaft in close contact with's sealing washer, its characterized in that: the axial position that the main shaft is close to box curb plate inner wall is fixed with the dust guard, the dust guard comprises locating main epaxial sleeve, locating the disc at sleeve periphery middle part, evenly locating a plurality of peach shape on the terminal surface of disc and driving protruding I, evenly locating a plurality of peach shape on another terminal surface of disc and driving protruding II, peach shape drives protruding I and the protruding II structural dimension of peach shape and driving protruding II the same of dirt, the position that box curb plate inner wall corresponds the dust guard top is fixed with the inside seal welt in addition, the dust guard is located between inside seal welt and the box curb plate inner wall in the main shaft axial, and the upper end of inside seal welt is buckled and is connected with box curb plate inner wall to box curb plate inner wall, and the left and right sides and the lower extreme of inside seal welt are naturally put and are not contacted with any part, and the lower extreme of inside seal welt is equipped with the n shape that corresponds the main shaft and dodges the mouth.

2. The reinforced box shaft seal structure of claim 1, wherein: the peach-shaped dust-removing bulges I and the peach-shaped dust-removing bulges II are alternately arranged in the circumferential direction of the main shaft, the wide starting ends of the peach-shaped dust-removing bulges I and the peach-shaped dust-removing bulges II are connected with the periphery of the sleeve, and the sharp ends of the peach-shaped dust-removing bulges I and the peach-shaped dust-removing bulges II extend to the edge of the disc.

3. The reinforced box shaft seal structure of claim 1, wherein: the distance from the lower end edge of the inner sealing lining plate to the axial lead of the main shaft is more than 50 mm.

4. The reinforced box shaft seal structure of claim 1, wherein: the distance from the dust guard to the inner wall of the side plate of the box body is 3-5 mm, and the distance from the dust guard to the inner sealing lining plate is 3-5 mm.

5. The reinforced box shaft seal structure of claim 1, wherein: the sleeve is connected with the main shaft through a key, and the main shaft is provided with a shaft shoulder and a check ring corresponding to the sleeve.

6. The reinforced box shaft seal structure of claim 1, wherein: the sealing seat comprises a seat body and a gland, and the sealing ring is embedded in the seat body and is compressed by the gland.

7. The reinforced box shaft seal structure of claim 1, wherein: the sealing ring is a felt sealing ring.

8. The reinforced box shaft seal structure of claim 1, wherein: the dust guard is wear-resisting steel material.

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