Sealing structure of cone crusher

Abstract

The sealing structure comprises a movable cone, a main shaft arranged in the middle of the movable cone and a sealing cylinder arranged on the outer side of the main shaft, the outer side of the sealing cylinder is sleeved with a dustproof ring, the inner side of the dustproof ring is provided with a sealing ring arranged on the outer side of the sealing cylinder in a sleeving mode, the dustproof ring comprises a horizontal part and an inclined part, and the sealing ring is arranged on the inner side of the horizontal part. The two side surfaces in the thickness direction of the inclined part are the upper surface and the lower surface respectively, a stepped groove is formed in the lower surface and comprises a first stepped ring groove and a second stepped ring groove, an annular dustproof pressing plate is arranged in the first stepped ring groove, the annular dustproof pressing plate and the second stepped ring groove jointly form an annular dustproof cavity, and the annular dustproof cavity is filled with grease. A dustproof towing ring abutting against the annular dustproof pressing plate is arranged at the lower end of the movable cone, a sealing tongue plate is further obliquely arranged at the lower end of the movable cone, and the lower end of the sealing tongue plate extends into the annular dustproof cavity and makes contact with grease in the annular dustproof cavity. The sealing structure is good in sealing effect and dustproof effect.

Description

Technical Field

[0001] The invention relates to the technical field of cone crushers, and in particular to a sealing structure of a cone crusher. Background Art

[0002] Cone crushers are widely used in mining, metallurgy, and construction aggregate industries. Their structural forms are constantly being improved and optimized. The market scale is huge and the prospects are promising. With the development of science and technology, the sealing is also constantly being improved and upgraded. Cone crushers are mainly used for medium and fine crushing operations in the sand and gravel aggregate and metal mining industries.

[0003] The common problem of cone crushers at present is the dustproof and sealing problem. The effect cannot meet the expectation, the lubricating oil is contaminated for a short time, the cost of replacing the lubricating oil is high, and the copper sleeve is damaged in a short time, resulting in great cost. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a sealing structure for a cone crusher.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a sealing structure of a cone crusher, comprising a moving cone, a main shaft arranged in the middle of the moving cone and a sealing cylinder arranged outside the main shaft, a dust ring is sleeved on the outside of the sealing cylinder, a sealing ring sleeved on the outside of the sealing cylinder is arranged on the inside of the dust ring, the dust ring comprises a horizontal part and an inclined part connected to the horizontal part and arranged obliquely upward, the sealing ring is arranged on the inside of the horizontal part, the two side surfaces of the inclined part in the thickness direction are respectively an upper surface and a lower surface, the lower surface is formed with a stepped groove, and the stepped groove is formed on the inner side of the sealing cylinder. The groove includes a first step annular groove and a second step annular groove, and the first step annular groove and the second step annular groove are arranged in sequence in a stepped manner along the thickness direction of the inclined portion toward the upper surface. An annular dustproof pressure plate is arranged in the first step annular groove, and the annular dustproof pressure plate and the second step annular groove together form an annular dustproof groove, and the annular dustproof groove is filled with grease. A dustproof drag ring that contacts the annular dustproof pressure plate is provided at the lower end of the moving cone, and a sealing tongue plate is also obliquely provided at the lower end of the moving cone, and the lower end of the sealing tongue plate extends into the annular dustproof groove and contacts the grease in the annular dustproof groove.

[0006] As a preferred solution, the upper end of the inclined portion abuts against the lower end of the moving cone.

[0007] As a preferred solution, the angle between the inclined portion and the horizontal plane is 20-25 degrees.

[0008] As a preferred solution, the angle between the sealing tongue plate and the horizontal plane is 20-25 degrees.

[0009] As a preferred solution, the annular dustproof pressure plate is connected to the inclined portion via a locking piece.

[0010] As a preferred solution, the locking member is a screw.

[0011] As a preferred solution, the dustproof drag ring is fixedly connected to the moving cone through a fastener.

[0012] As a preferred solution, the fastener is a bolt.

[0013] As a preferred solution, an annular groove is provided on the inner side of the dustproof ring, and a sealing ring is located in the annular groove, and the sealing ring is an O-ring.

[0014] The beneficial effects of the present application are as follows: 1. The present application forms a first seal by arranging a sealing ring on the inner side of the dustproof ring, and the upper and lower ends of the inclined portion of the dustproof ring are respectively in contact with the moving cone and the dustproof drag ring to form a second seal. The annular dustproof pressure plate on the inclined portion of the present application and the second stepped annular groove jointly form an annular dustproof groove, and the sealing tongue plate extends into the annular dustproof groove to form a labyrinth dustproof structure, i.e., a third seal is formed, and grease is provided in the annular dustproof groove, and the sealing tongue plate contacts with the grease. By arranging the grease in combination with the labyrinth dustproof structure, i.e., the third seal, dust can be effectively prevented from entering, forming a fourth seal. Under the action of the quadruple seal, dust can be effectively prevented from entering the crusher, and the sealing effect is good.

[0015] 2. The dustproof drag ring of the present application is installed on the moving cone by bolts, which is easy to disassemble and has strong flexibility.

[0016] 3. The annular dustproof pressure plate of the present application is connected to the inclined part by screws, which is easy to disassemble and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 It is a structural schematic diagram of the annular dustproof pressure plate of the present invention; Figure 3 This is a schematic diagram of the structure of the sealing ring of Example 2 of the present invention.

[0018] Markings in the figure: 1. moving cone, 2. dust ring, 21. horizontal part, 22. inclined part, 3. grease, 4. sealing tongue plate, 5. dustproof pressure plate, 6. dustproof drag ring, 7. bolt, 8. screw, 9. sealing ring, 91. upper sealing lip, 92. lower sealing lip, 10. sealing cylinder. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that in the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] See also Figure 1-2 Embodiment 1 of the present invention provides a sealing structure of a cone crusher, comprising a moving cone 1, a main shaft arranged in the middle of the moving cone 1, and a sealing cylinder 10 arranged outside the main shaft, a dust ring 2 is sleeved on the outside of the sealing cylinder 10, a sealing ring 9 sleeved on the outside of the sealing cylinder 10 is arranged on the inside of the dust ring 2, the dust ring 2 comprises a horizontal portion 21 and an inclined portion 22 connected to the horizontal portion 21 and arranged obliquely upward, the horizontal portion 21 and the inclined portion 22 are integrally made, the horizontal portion 21 and the inclined portion 22 are both annular structures, the sealing ring 9 is arranged on the inside of the horizontal portion 21, and the two side surfaces of the inclined portion 22 in the thickness direction are respectively the upper surface And the lower surface, the lower surface is provided with a stepped groove, the stepped groove includes a first step annular groove and a second step annular groove, the first step annular groove and the second step annular groove are arranged in sequence in a stepped shape along the thickness direction of the inclined portion 22 toward the upper surface, an annular dustproof pressure plate 5 is provided in the first step annular groove, the annular dustproof pressure plate 5 and the second step annular groove together form an annular dustproof groove, the annular dustproof groove is filled with grease 3, a dustproof drag ring 6 that contacts the annular dustproof pressure plate 5 is provided at the lower end of the moving cone 1, and a sealing tongue plate 4 is also obliquely provided at the lower end of the moving cone 1, the lower end of the sealing tongue plate 4 extends into the annular dustproof groove and contacts with the grease 3 in the annular dustproof groove.

[0021] The upper end of the inclined portion 22 abuts against the lower end of the moving cone 1. The angle between the inclined portion 22 and the horizontal plane is 20-25 degrees. The angle between the sealing tongue plate 4 and the horizontal plane is 20-25 degrees. The angle between the inclined portion 22 and the horizontal plane is equal to the angle between the sealing tongue plate 4 and the horizontal plane.

[0022] Specifically, the cross-section of the annular dustproof groove is a U-shaped structure, and the annular dustproof groove has an opening, the opening of the annular dustproof groove faces the sealing tongue plate 4, and the sealing tongue plate 4 is also annular. The volume of the grease 3 is not greater than two-thirds of the volume of the annular dustproof groove, thereby effectively preventing the grease 3 from overflowing when the cone crusher is running and rotating. The annular dustproof pressure plate 5 is connected to the inclined portion 22 by a locking member, and the locking member is a screw 8. The dustproof drag ring 6 is fixedly connected to the moving cone 1 by a fastener. The fastener is a bolt 7. It should be noted that the parts not described in detail in this application are all prior art.

[0023] In addition, the inner side of the dust ring 2 is provided with an annular groove, and the sealing ring 9 is located in the annular groove. The sealing ring 9 is an O-ring. In the present application, the inner side of the sealing ring 9 is coated with lubricating grease to play a lubricating role. The upper end of the dustproof drag ring 6 has an inclined surface for supporting the annular dustproof pressure plate 5. The angle between the inclined surface and the horizontal plane is consistent with the inclined angle of the inclined portion 22, thereby ensuring that the dustproof drag ring 6 and the annular dustproof pressure plate 5 are better in contact, thereby improving the sealing and dustproof effect. The sealing ring 9 is installed in the annular groove inside the dust ring 2, the dust ring 2 is installed in the moving cone 1, the sealing tongue plate 4 is welded and fixed to the moving cone 1, the dustproof pressure plate 5 is fixed to the first step ring groove by bolts 8, and then filled with a proper amount of grease 3, and the dustproof drag ring 6 is installed above the lower end of the moving cone 1 by screws 7. After the installation is completed, the above installed components are put on the outside of the sealing cylinder 10.

[0024] The present application provides a sealing ring 9 on the inner side of the dustproof ring 2 to effectively prevent dust from entering the equipment from there, effectively preventing dust and forming a first seal. The upper and lower ends of the inclined portion 22 of the dustproof ring 2 are respectively in contact with the moving cone 1 and the dustproof drag ring 6 to form a second seal. The annular dustproof pressure plate 5 on the inclined portion 22 of the present application and the second stepped annular groove jointly form an annular dustproof groove. The sealing tongue plate 4 extends into the annular dustproof groove to form a labyrinth dustproof structure, that is, a third seal is formed, and grease 3 is provided in the annular dustproof groove. The sealing tongue plate 4 contacts the grease 3. By providing the grease 3 in combination with the labyrinth dustproof structure, dust can be effectively prevented from entering, forming a fourth seal. Under the action of the quadruple seal, dust can be effectively prevented from entering the equipment, and the sealing effect is good.

[0025] Of course, the present invention is not limited to the above-described embodiments. Several other embodiments based on the design concept of the present invention are also provided below.

[0026] For example, in Example 2, different from the above-described implementation, Figure 3As shown, the inner side of the sealing ring 9 of the present application is provided with an upper sealing lip 91 and a lower sealing lip 92 in sequence from top to bottom along its axial direction, and a lubrication groove for accommodating lubricating grease is formed between the upper sealing lip 91 and the lower sealing lip 92. The lubrication groove can be filled with lubricating oil to lubricate the contact parts of the upper sealing lip 91 and the lower sealing lip 92 with the sealing cylinder 10, so as to reduce the wear between the upper sealing lip 91 and the lower sealing lip 92 and the sealing cylinder 10, thereby improving the service life of the present application. By providing the upper sealing lip 91 and the lower sealing lip 92, a double sealing effect is achieved to further prevent dust from entering.

[0027] For example, in Example 3, different from the above-described embodiment, the angle between the inclined portion 22 and the horizontal plane is 20 degrees. The angle between the sealing tongue plate 4 and the horizontal plane is 20 degrees.

[0028] For example, in Example 4, different from the above-described embodiment, the angle between the inclined portion 22 and the horizontal plane is 23 degrees. The angle between the sealing tongue plate 4 and the horizontal plane is 23 degrees.

[0029] For example, in Example 5, different from the above-described embodiments, the angle between the inclined portion 22 and the horizontal plane is 25 degrees. The angle between the sealing tongue plate 4 and the horizontal plane is 25 degrees.

[0030] It should be noted that the above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the present invention.

Claims

1. A sealing structure for a cone crusher, comprising a moving cone (1), a main shaft arranged in the middle of the moving cone (1), and a sealing cylinder (10) arranged outside the main shaft, characterized in that: A dust ring (2) is sleeved on the outside of the sealing cylinder (10), and a sealing ring (9) sleeved on the outside of the sealing cylinder (10) is provided on the inside of the dust ring (2). The dust ring (2) comprises a horizontal portion (21) and an inclined portion (22) connected to the horizontal portion (21) and arranged obliquely upward. The sealing ring (9) is arranged on the inside of the horizontal portion (21). The two side surfaces of the inclined portion (22) in the thickness direction are respectively an upper surface and a lower surface. The lower surface is formed with a stepped groove, and the stepped groove comprises a first stepped annular groove and a second stepped annular groove. The first stepped annular groove and the second stepped annular groove are provided on the inside of the sealing cylinder (10). The annular grooves are arranged in a stepped manner in a thickness direction of the inclined portion (22) toward the upper surface. An annular dustproof pressure plate (5) is arranged in the first stepped annular groove. The annular dustproof pressure plate (5) and the second stepped annular groove together form an annular dustproof groove. The annular dustproof groove is filled with grease (3). A dustproof drag ring (6) that contacts the annular dustproof pressure plate (5) is arranged at the lower end of the movable cone (1). A sealing tongue plate (4) is also inclined at the lower end of the movable cone (1). The lower end of the sealing tongue plate (4) extends into the annular dustproof groove and contacts the grease (3) in the annular dustproof groove.

2. The sealing structure of a cone crusher according to claim 1, characterized in that: The upper end of the inclined portion (22) abuts against the lower end of the moving cone (1).

3. The sealing structure of a cone crusher according to claim 1, characterized in that: The angle between the inclined portion (22) and the horizontal plane is 20-25 degrees.

4. The sealing structure of a cone crusher according to claim 1, characterized in that: The angle between the sealing tongue plate (4) and the horizontal plane is 20-25 degrees.

5. The sealing structure of a cone crusher according to claim 1, characterized in that: The annular dustproof pressure plate (5) is connected to the inclined portion (22) via a locking piece.

6. The sealing structure of a cone crusher according to claim 5, characterized in that: The locking piece is a screw (8).

7. The sealing structure of a cone crusher according to claim 5, characterized in that: The dustproof drag ring (6) is fixedly connected to the moving cone (1) via a fastener.

8. The sealing structure of a cone crusher according to claim 7, characterized in that: The fastener is a bolt (7).

9. The sealing structure of a cone crusher according to claim 1, characterized in that: An annular groove is provided on the inner side of the dustproof ring (2), and a sealing ring (9) is located in the annular groove. The sealing ring (9) is an O-type sealing ring.

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