Bolt locking and sealing device for steel lining plate of wet mill

Abstract

The utility model discloses a bolt locking and sealing device for a steel lining plate of a wet mill, and relates to the technical field of wet mills. The sealing device comprises a mill cylinder, a flat head bolt, a sealing base, a sealing ring, a gland and a gasket, a nut end is arranged on the flat head bolt, an outer cylinder is integrally connected to the edge of the upper surface of the sealing base, the sealing base is welded and fixed to the upper surface of the mill cylinder, the sealing ring is composed of a lower ring body and an upper ring body which are integrally connected, and the gland is arranged on the lower ring body. The outer diameter of the upper ring body is smaller than that of the lower ring body, and the sealing ring is arranged at the inner bottom of the outer cylinder in an interference mode. Compaction space for the sealing ring can be formed through matching of the gland and the sealing base, the sealing ring can be compacted between the gland and the sealing base, a good sealing effect can be achieved, meanwhile, a plurality of inner edges are arranged on the inner hole portion of the sealing ring and can be embedded in the thread position of the flat head bolt, and the sealing effect is good. And the thread of the bolt can be effectively sealed, and it is ensured that slurry is not leaked.

Description

Technical Field

[0001] The utility model belongs to the technical field of wet grinders, and particularly relates to a bolt locking and sealing device for a steel lining plate of a wet grinder. Background Art

[0002] A large amount of grinding media and slurry are installed inside the wet grinder. During normal operation, the impact of the grinding media on the lining plate is very large, which is very likely to cause the loosening of the lining plate bolts, and then cause the problem of slurry leakage from the bolts of the mill cylinder.

[0003] In order to completely solve this problem, two problems need to be considered:

[0004] 1. How to ensure that the lining plate bolts do not loosen;

[0005] 2. How to ensure that the lining plate bolt holes are tightly sealed to completely prevent slurry leakage.

[0006] Therefore, designing a high-sealing and anti-loosening sealing device based on the above two problems is an issue that needs to be solved by those skilled in the art. Content of the Utility Model

[0007] The purpose of the utility model is to provide a bolt locking and sealing device for a steel lining plate of a wet grinder. Through the cooperation of a gland and a sealing base, a compaction space for the sealing ring can be formed. The sealing ring can be compacted between the gland and the sealing base, which can achieve a good sealing effect. At the same time, multiple inner edges are arranged at the inner hole part of the sealing ring, which can be embedded at the thread of the flat head bolt, and can effectively seal the thread of the bolt to ensure that there is no slurry leakage.

[0008] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0009] The utility model is a bolt locking and sealing device for a steel lining plate of a wet grinder, including a mill cylinder, a lining plate body, a flat head bolt, a sealing base, a sealing ring, a gland and a gasket. A nut end is provided on the flat head bolt;

[0010] An outer cylinder is integrally connected to the edge of the upper surface of the sealing base, and the sealing base is welded and fixed on the upper surface of the mill cylinder;

[0011] The sealing ring is composed of a lower ring body and an upper ring body which are integrally connected. The outer diameter of the upper ring body is smaller than the outer diameter of the lower ring body. The sealing ring is installed in the inner bottom of the outer cylinder with an interference fit, and an embedding groove is formed between the upper ring body and the outer cylinder;

[0012] The inner holes of the upper ring body and the lower ring body are flush and linearly provided with a plurality of inner edges;

[0013] The bottom surface of the gland is provided with an embedding ring. The gland covers the upper surface of the upper ring body, and the embedding ring is arranged in the embedding groove.

[0014] The liner body is arranged inside the mill cylinder. The inner surface of the liner body is provided with a positioning port. The head end of the flat head bolt is arranged in the positioning port with a gap. The flat head bolt sequentially penetrates through the mill cylinder, the sealing ring and the gland, and the gasket is arranged between the gland and the nut end.

[0015] The gasket is a wedge-shaped gasket group.

[0016] Furthermore, anti-loosening protrusions are arranged on opposite sides of the circumferential side of the gland, and anti-loosening grooves are arranged on the inner wall of the outer cylinder. The anti-loosening protrusions are slidably arranged in the anti-loosening grooves.

[0017] Furthermore, the gasket is composed of an upper wedge-shaped piece and a lower wedge-shaped piece. The bottom surface of the lower wedge-shaped piece is provided with a plurality of radially arranged radial saw teeth in a ring shape.

[0018] Furthermore, the gland is a circular plate-like structure, and the embedding ring is integrally connected with the gland.

[0019] Furthermore, outer edges are arranged on the circumferential sides of both the upper ring body and the lower ring body. The sealing ring is in interference fit with the outer cylinder through the outer edges.

[0020] Furthermore, the sealing ring is a polyurethane sealing ring.

[0021] The utility model has the following beneficial effects:

[0022] 1. Through the cooperation of the gland and the sealing base, the utility model can form a compaction space for the sealing ring. The sealing ring can be compacted between the gland and the sealing base, which can achieve a good sealing effect. At the same time, a plurality of inner edges are arranged in the inner hole part of the sealing ring, which can be embedded at the thread of the flat head bolt, and can effectively seal the thread of the bolt to ensure that there is no leakage of slurry.

[0023] 2. Through the design of the wedge-shaped gasket group, the anti-loosening ability of the nut end can be improved. At the same time, radial saw teeth are arranged on the lower wedge-shaped piece, which can bite with the gland below. The displacement only occurs between the wedge-shaped surfaces of the gasket, which can effectively self-lock, causing an increase in the clamping force and effectively preventing the bolt from loosening.

[0024] 3. Through the cooperation of the anti-loosening protrusions and the anti-loosening grooves, the utility model can be used for the movement guidance of the gland, ensuring that there is no relative displacement between the gland and the sealing base, enabling the wedge-shaped gasket group to produce a good effect, and further improving the anti-loosening ability.

[0025] Of course, it is not necessary for any product implementing the utility model to achieve all the above-mentioned advantages simultaneously. Brief Description of the Drawings

[0026] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 It is an exploded view of the structure from the top view of the present utility model;

[0028] Figure 2 It is an exploded view of the structure from the bottom view of the present utility model;

[0029] Figure 3 It is a cross-sectional view of the structure after installation of the present utility model;

[0030] In the drawings, the list of components represented by each reference numeral is as follows:

[0031] 1 - grinding mill cylinder, 2 - flat head bolt, 3 - sealing base, 4 - sealing ring, 5 - gland, 6 - gasket, 7 - lining plate body, 201 - nut end, 301 - outer cylinder, 302 - anti-loosening groove, 401 - lower ring body, 402 - upper ring body, 403 - embedding groove, 404 - inner edge, 405 - outer edge, 501 - embedding ring, 502 - anti-loosening protrusion, 601 - upper wedge piece, 602 - lower wedge piece, 603 - radial saw teeth, 701 - positioning port. Detailed Embodiments

[0032] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some, rather than all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0033] Please refer to Figures 1-3 As shown, the present utility model is a bolt-locking and sealing device for a wet grinding mill steel lining plate, including a grinding mill cylinder 1, a lining plate body 7, a flat head bolt 2, a sealing base 3, a sealing ring 4, a gland 5 and a gasket 6. The flat head bolt 2 is provided with a nut end 201;

[0034] An outer cylinder 301 is integrally connected to the edge of the upper surface of the sealing base 3, and the sealing base 3 is welded and fixed to the upper surface of the grinding mill cylinder 1;

[0035] The sealing ring 4 is composed of a lower ring body 401 and an upper ring body 402 which are integrally connected. The outer diameter of the upper ring body 402 is smaller than that of the lower ring body 401. The sealing ring 4 is press-fitted at the inner bottom of the outer cylinder body 301, and an embedding groove 403 is formed between the upper ring body 402 and the outer cylinder body 301.

[0036] The inner holes of the upper ring body 402 and the lower ring body 401 are flush and linearly provided with a plurality of inner edges 404.

[0037] The bottom surface of the gland 5 is provided with an embedding ring 501. The gland 5 covers the upper surface of the upper ring body 402, and the embedding ring 501 is arranged in the embedding groove 403.

[0038] The lining plate body 7 is arranged inside the mill cylinder body 1. The inner surface of the lining plate body 7 is provided with a positioning port 701. The head end of the flat head bolt 2 is arranged in the positioning port 701 with a clearance. The flat head bolt 2 sequentially penetrates through the mill cylinder body 1, the sealing ring 4 and the gland 5, and the gasket 6 is arranged between the gland 5 and the nut end 201.

[0039] The gasket 6 is a wedge-shaped gasket group.

[0040] Among them, as Figures 1-2 shown, anti-loosening protrusions 502 are arranged on the opposite sides of the circumferential side surface of the gland 5, and an anti-loosening groove 302 is arranged on the inner wall of the outer cylinder body 301. The anti-loosening protrusions 502 are slidably arranged in the anti-loosening groove 302.

[0041] Among them, as Figures 1-3 shown, the gasket 6 is composed of an upper wedge-shaped piece 601 and a lower wedge-shaped piece 602. The bottom surface of the lower wedge-shaped piece 602 is provided with a plurality of radially arranged saw teeth 603 arranged in a ring shape.

[0042] Among them, as Figures 1-3 shown, the gland 5 is a circular ring-shaped plate structure, and the embedding ring 501 is integrally connected with the gland 5.

[0043] Among them, as Figures 1-3 shown, outer edges 405 are arranged on the circumferential side surfaces of both the upper ring body 402 and the lower ring body 401. The sealing ring 4 is in interference fit with the outer cylinder body 301 through the outer edges 405.

[0044] Among them, the sealing ring 4 is a polyurethane sealing ring.

[0045] The working principle of the present utility model is as follows: The sealing ring 4 is arranged inside the outer cylinder body 301. By screwing the nut end 201 to press the gasket 6 and the gland 5, the sealing ring 4 is pressed firmly inside the outer cylinder body 301, achieving a good sealing effect.

[0046] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0047] The preferred embodiments of the present utility model disclosed above are only used to help explain the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A bolt locking and sealing device for a steel liner of a wet mill, comprising a mill cylinder (1), a liner body (7) and a flat head bolt (2), wherein the flat head bolt (2) is provided with a nut end (201), characterized in that: It also includes a sealing base (3), a sealing ring (4), a gland (5) and a gasket (6); The outer cylinder (301) is integrally connected to the edge of the upper surface of the sealing base (3), and the sealing base (3) is welded and fixed to the upper surface of the mill cylinder (1); The sealing ring (4) is composed of a lower ring body (401) and an upper ring body (402) connected in one piece, the outer diameter of the upper ring body (402) is smaller than the outer diameter of the lower ring body (401), the sealing ring (4) is interference-fittedly arranged at the inner bottom of the outer cylinder (301), and an embedding groove (403) is formed between the upper ring body (402) and the outer cylinder (301); The inner holes of the upper ring body (402) and the lower ring body (401) are flush and linearly provided with a plurality of inner edges (404); The bottom surface of the gland (5) is provided with an embedding ring (501), the gland (5) covers the upper surface of the upper ring body (402), and the embedding ring (501) is arranged in the embedding groove (403); The liner body (7) is arranged on the inner side of the mill cylinder (1), and a positioning hole (701) is arranged on the inner surface of the liner body (7). The screw head end clearance of the flat head bolt (2) is arranged in the positioning hole (701). The flat head bolt (2) passes through the mill cylinder (1), the sealing base (3), the sealing ring (4) and the gland (5) in sequence, and the gasket (6) is arranged between the gland (5) and the nut end (201); The gasket (6) is a wedge-shaped gasket group.

2. A bolt locking sealing device for a steel liner of a wet mill according to claim 1, characterized in that: The opposite sides of the peripheral side of the pressure cover (5) are provided with anti-loosening protrusions (502), the inner wall of the outer cylinder (301) is provided with anti-loosening grooves (302), and the anti-loosening protrusions (502) are slidably arranged in the anti-loosening grooves (302).

3. The bolt locking sealing device for a steel liner of a wet mill according to claim 1, characterized in that: The gasket (6) is composed of an upper wedge-shaped piece (601) and a lower wedge-shaped piece (602), and the bottom surface of the lower wedge-shaped piece (602) is provided with a plurality of radial saw teeth (603) arranged in a ring shape.

4. The bolt locking sealing device for a steel liner of a wet mill according to claim 1, characterized in that: The gland (5) is a circular plate structure, and the embedded ring (501) is integrally connected to the gland (5).

5. The bolt locking sealing device for a steel liner of a wet mill according to claim 1, characterized in that: The circumferential side surfaces of the upper ring body (402) and the circumferential side surfaces of the lower ring body (401) are both provided with outer edges (405), and the sealing ring (4) is interference-fitted with the outer cylinder body (301) via the outer edges (405).

6. The bolt locking sealing device for a steel liner of a wet mill according to claim 1, characterized in that: The sealing ring (4) is a polyurethane sealing ring.

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