CN210318504U - Mechanical seal for dry ball mill - Google Patents

Abstract

A mechanical seal for a dry ball mill relates to a sealing structure, a dynamic seal is arranged in a static seal, one end of each of two pressing rings (5) is respectively contacted with one surface of a pressing ring A (1) and one surface of a pressing ring B (9), a gap (4) is formed between an outer edge surface arranged on each of the two pressing rings (5) and an inner edge surface of an outer ring (2), and the diameter of a central hole arranged on the pressing ring A (1) is the same as that of a central hole arranged on the pressing ring B (9); the utility model discloses a tightly link the spindle of ball mill with clamp for the dynamic seal, lead to groove group with "U" shape with the static seal and fix in the axial space between casing and bearing, realized the purpose that the protection spindle does not receive wearing and tearing.

Description

Mechanical seal for dry ball mill

[ technical field ] A method for producing a semiconductor device

The utility model relates to a seal structure especially relates to a mechanical seal who supplies dry-type ball mill to use.

[ background of the invention ]

The ball mill is suitable for grinding various ores and other materials, is widely used in the industries of mineral separation, building materials, chemical industry and the like, and can be divided into a dry type ore grinding mode and a wet type ore grinding mode. The existing dry ball mill is sealed by using packing and oil seal, the shaft of the ball mill is easy to have serious abrasion in the long-term use process, the packing is sealed by using the packing and can have serious abrasion due to no radial run-out compensation capability, the oil seal radial run-out compensation capability is poor when the oil seal is used for sealing, and the lip rubber seal is easy to abrade.

[ summary of the invention ]

In order to overcome the not enough among the background art, the utility model discloses a mechanical seal who supplies dry ball mill to use, through tightly tying up the spindle at the ball mill with clamp for the movable seal, will quiet seal with "U" shape lead to groove group and fix in the axial space between casing and bearing, realized the purpose that the protection spindle does not receive wearing and tearing.

In order to realize the purpose, the utility model adopts the following technical scheme:

a mechanical seal for a dry ball mill comprises a dynamic seal and a static seal, wherein the dynamic seal comprises an inner ring and two pressing rings, an annular groove is arranged in the middle of the outer edge surface of the inner ring, a hoop is sleeved on the annular groove, one side of the inner ring surface of each pressing ring is provided with two annular half grooves, the two annular half grooves arranged on the two pressing rings are respectively sleeved on two sides of the inner ring, the diameter of a central hole arranged on each pressing ring is slightly larger than that of the central hole arranged on the inner ring, the static seal comprises a pressing ring A, an outer ring and a pressing ring B, the pressing ring A and the pressing ring B are respectively and oppositely arranged on two sides of the outer ring, a plurality of U-shaped through grooves A are arranged on the outer edge surface of the pressing ring A at intervals around the central hole arranged on the outer edge surface of the pressing ring A, a plurality of U-shaped through grooves B coaxial with the U-shaped through grooves A are arranged on the outer edge surface of the pressing ring B, the movable sealing device is characterized in that a U-shaped through groove A, a U-shaped through groove B and a U-shaped through groove C are formed into a U-shaped through groove group, the movable sealing device is arranged in a static sealing device, one end of each of two pressing rings is respectively contacted with one surface of each of a pressing ring A and a pressing ring B, a gap is formed between an outer edge surface of each of the two pressing rings and an inner edge surface of an outer ring, the diameter of a center hole formed in the pressing ring A is the same as that of a center hole formed in the pressing ring B, and the diameter of the center hole formed in each of the pressing rings A and B is slightly larger than that of the center hole formed.

The mechanical seal that supplies dry-type ball mill to use, it is equipped with a plurality of perforation A around its centre bore that is equipped with and the crisscross equidistance of a plurality of "U" shape through groove A on clamping ring A, be equipped with on the outer ring with a plurality of perforation B coaxial with a plurality of perforation A, be equipped with on clamping ring B with a plurality of screw coaxial with a plurality of perforation A, a plurality of bolts pass in proper order behind a plurality of perforation A and a plurality of perforation B with a plurality of screw spiro union.

The mechanical seal for the dry ball mill is characterized in that an oil filling hole penetrating through the inner edge surface and the outer edge surface of the outer ring is formed in the outer ring, a neck expanding is formed in one end, close to the outer edge surface of the outer ring, of the oil filling hole, and a sealing cover matched with the neck expanding is arranged on the neck expanding.

The mechanical seal for the dry ball mill is characterized in that a plurality of blind holes B are respectively and oppositely arranged at intervals at two ends of the inner ring, blind holes A which are coaxial with the blind holes B are respectively arranged in annular half grooves respectively arranged on the two pressing rings, and a transmission pin is arranged between each group of blind holes B and the blind holes A.

The material of the pressure ring A and the material of the pressure ring B are stainless steel respectively.

The mechanical seal for the dry ball mill is characterized in that the inner ring is made of silica gel.

Since the technical scheme is used, the utility model discloses following beneficial effect has:

the mechanical seal for the dry ball mill of the utility model fixes the U-shaped through groove group for static seal in the axial space between the shell and the bearing by tightly fixing the clamp for dynamic seal on the crankshaft of the ball mill, thus realizing the purpose of protecting the crankshaft from abrasion; the utility model has the characteristics of rational in infrastructure, protection spindle, effective extension spindle life etc, have very strong spreading value, market prospect is wide.

[ description of the drawings ]

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

FIG. 2 is a schematic structural view of the pressure ring A of the present invention;

FIG. 3 is a schematic diagram of a half-section structure of the outer ring of the present invention;

fig. 4 is a schematic structural view of the pressing ring of the present invention;

fig. 5 is a schematic structural view of the inner ring of the present invention;

fig. 6 is the structure diagram of the press ring B of the present invention.

In the figure: 1. pressing a ring A; 2. an outer ring; 3. a bolt; 4. a gap; 5. pressing a ring; 6. clamping a hoop; 7. a drive pin; 8. an inner ring; 9. pressing a ring B; 10. punching a hole A; 11. a U-shaped through groove A; 12. punching a hole B; 13. a U-shaped through groove B; 14. sealing the cover; 15. expanding the neck; 16. an oil filler hole; 17. a blind hole A; 18. an annular half groove; 19. a ring groove; 20. a blind hole B; 21. a screw hole; 22. a U-shaped through groove C.

[ detailed description ] embodiments

The present invention will be explained in more detail by the following examples, which are not intended to limit the invention, and the purpose of disclosing the invention is to protect all the changes and improvements that come within the scope of the invention;

the mechanical seal for the dry ball mill comprises a dynamic seal and a static seal, wherein the dynamic seal comprises an inner ring 8 and a pressing ring 5, the inner ring 8 is made of silica gel, an annular groove 19 is formed in the middle of the outer edge surface of the inner ring 8, a hoop 6 is sleeved on the annular groove 19, one side of the inner annular surface of the pressing ring 5 is provided with two annular half grooves 18, the two annular half grooves 18 arranged on the two pressing rings 5 are respectively sleeved on two sides of the inner ring 8, two ends of the inner ring 8 are respectively provided with a plurality of blind holes B20 at opposite intervals, the annular half grooves 18 respectively arranged on the two pressing rings 5 are respectively provided with blind holes A17 coaxial with a plurality of blind holes B20, a transmission pin 7 is arranged between each group of blind holes B20 and the blind holes A17, the diameter of the central holes respectively arranged on the two pressing rings 5 is slightly larger than that the inner ring 8 is provided with the central holes, the static seal comprises a pressing ring A1, an outer ring 2 and a pressing ring B9, the pressing ring A1 and the static seal 9 are, the pressing ring A1 and the pressing ring B9 are respectively oppositely arranged at two sides of the outer ring 2, an oil filling hole 16 penetrating through the inner edge surface of the outer ring 2 and the outer edge surface of the outer ring 2 is arranged on the outer ring 2, a neck-expanding 15 is arranged at one end of the oil filling hole 16 close to the outer edge surface of the outer ring 2, a sealing cover 14 matched with the neck-expanding 15 is arranged on the neck-expanding 15, a plurality of U-shaped through grooves A11 are arranged on the outer edge surface of the pressing ring A1 at intervals around a central hole arranged on the outer edge surface, a plurality of U-shaped through grooves B13 coaxial with the U-shaped through grooves A11 are arranged on the outer edge surface of the pressing ring B9, a plurality of U-shaped through grooves C22 coaxial with the U-shaped through grooves A11 are arranged on the outer edge surface of the pressing ring B9, the U-shaped through grooves A11, the U-shaped through grooves B13 and the U-shaped through grooves C22 form a U-shaped through groove group, one side of the dynamic sealing ring is arranged in the static sealing ring, one side of the pressing ring A, the outer edge face of each of the two pressing rings 5 and the inner edge face of the outer ring 2 form a gap 4, the diameter of a center hole formed in the pressing ring A1 is the same as that of a center hole formed in the pressing ring B9, the diameters of the center holes formed in the pressing ring A1 and the pressing ring B9 are slightly larger than those of the center holes formed in the two pressing rings 5, a plurality of through holes A10 are formed in the pressing ring A1 around the center hole formed in the pressing ring A1 and staggered and equidistant with the through holes A11, a plurality of through holes B12 coaxial with the through holes A10 are formed in the outer ring 2, a plurality of screw holes 21 coaxial with the through holes A10 are formed in the pressing ring B9, and the plurality of bolts 3 are screwed with the screw holes 21 after sequentially penetrating through the through holes A10 and the through holes B12.

Implement supply mechanical seal that dry-type ball mill used, during the use, will the utility model discloses the cover is on the spindle of ball mill, open closing cap 14, rotatory static seal is to suitable angle, make the screwdriver stretch into behind oil filler point 16 the tool bit can twist the screw that is equipped with on the clamp 6, screw up with being equipped with on the screwdriver with clamp 6, make the sealed fastening of messenger on the spindle of ball mill, pour into suitable lubricating oil into through oil filler point 16 to clearance 4 after, go into flaring 15 with closing cap 14 lid, recycle "U" shape lead to the groove group with static seal fix in the axial space between casing and bearing, at this moment the spindle follows rotatoryly at rotatory in-process movive seal, static seal keeps motionless, movive seal's rotation provides radial compensation, axial float and radial runout have been subductd, the life of spindle has been prolonged.

The part of the utility model not detailed is prior art.

Claims (6)

1. A mechanical seal for a dry ball mill, characterized by: including dynamic seal and static seal, dynamic seal includes inner ring (8) and clamping ring (5), is equipped with annular (19) in the outer fringe face middle part of inner ring (8), and the cover has clamp (6) on annular (19), is equipped with annular half groove (18) in one side of clamping ring (5) inner ring face, clamping ring (5) are two, and two annular half groove (18) that two clamping ring (5) were equipped with overlap respectively in the both sides of inner ring (8), and the centre bore diameter that two clamping ring (5) were equipped with respectively slightly is greater than the diameter that inner ring (8) were equipped with the centre bore, and static seal includes clamping ring A (1), outer ring (2) and clamping ring B (9), and clamping ring A (1) and clamping ring B (9) are arranged in the both sides of outer ring (2) respectively relatively, are equipped with a plurality of "U" shape "logical groove A (11) around its centre bore interval equidistance that is equipped with on the outer fringe face of clamping ring A (1), are equipped with a plurality of" U "logical groove A" through groove A "11" coaxial a plurality of logical U "shape" U "shape on (13) The outer edge surface of the pressing ring B (9) is provided with a plurality of U-shaped through grooves C (22) which are coaxial with the U-shaped through grooves A (11), so that the U-shaped through grooves A (11), the U-shaped through grooves B (13) and the U-shaped through grooves C (22) form a U-shaped through groove group, the dynamic seal is arranged in the static seal, one ends of the two pressing rings (5) are respectively contacted with one surfaces of the pressing ring A (1) and one surfaces of the pressing ring B (9), a gap (4) is formed between the outer edge surface of the two pressing rings (5) and the inner edge surface of the outer ring (2), the diameter of a central hole formed in the pressing ring A (1) is the same as that of a central hole formed in the pressing ring B (9), and the diameters of central holes formed in the pressing ring A (1) and the pressing ring B (9) are slightly larger than those of the central holes formed in the two pressing rings (5).

2. The mechanical seal for a dry ball mill according to claim 1, wherein: go up around its centre bore that is equipped with and a plurality of "U" shape logical groove A (11) crisscross equidistance be equipped with a plurality of perforation A (10) on clamping ring A (1), be equipped with on outer ring (2) with a plurality of perforation B (12) coaxial with a plurality of perforation A (10), be equipped with on clamping ring B (9) with a plurality of coaxial screw (21) of perforation A (10), a plurality of bolt (3) pass behind a plurality of perforation A (10) and a plurality of perforation B (12) and a plurality of screw (21) spiro union in proper order.

3. The mechanical seal for a dry ball mill according to claim 1, wherein: an oil filling hole (16) penetrating through the inner edge surface of the outer ring (2) and the outer edge surface of the outer ring (2) is formed in the outer ring (2), a neck expanding (15) is arranged at one end, close to the outer edge surface of the outer ring (2), of the oil filling hole (16), and a sealing cover (14) matched with the neck expanding (15) is arranged on the neck expanding (15).

4. The mechanical seal for a dry ball mill according to claim 1, wherein: the two ends of the inner ring (8) are respectively provided with a plurality of blind holes B (20) at intervals, the annular half grooves (18) respectively arranged on the two pressing rings (5) are respectively internally provided with blind holes A (17) coaxial with the blind holes B (20), and a transmission pin (7) is arranged between each group of blind holes B (20) and the blind holes A (17).

5. The mechanical seal for a dry ball mill according to claim 1, wherein: the compression ring A (1) and the compression ring B (9) are made of stainless steel respectively.

6. The mechanical seal for a dry ball mill according to claim 1, wherein: the inner ring (8) is made of silica gel.

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