Large gear ring protective cover oil receiving sealing device

Abstract

The utility model relates to a large gear ring protective cover oil receiving sealing device, which belongs to the field of gear ring sealing equipment and comprises a large gear ring protective cover, an oil receiving groove and felt. The oil receiving grooves are symmetrically arranged along the left and right sides of the large gear ring protective cover, and the radian of the oil receiving grooves is consistent with that of the large gear ring protective cover; the felt is fixed to the inner ring of the oil receiving groove, one end of the felt is fixed to the oil receiving groove, and the other end of the felt makes contact with the gear seat. The oil receiving groove is formed in a half circle along the inner ring of the large gear ring protective cover to the position of the pinion shaft, and the part, above the pinion, of the large gear ring protective cover can be completely sealed after being arranged; according to the utility model, external water, ore pulp, fine ore sand and the like can be effectively prevented from entering the large gear ring; the oil receiving groove can block lubricating oil thrown out when the large gear rotates and guide the lubricating oil to the oil receiving position on the lower portion of the large gear ring protective cover to be collected, tooth surface damage caused by small impurities entering the gear ring is effectively reduced, the service life is prolonged, and the maintenance cost is reduced. And the lubricating oil can be prevented from leaking to pollute the working environment.

Description

Technical Field

[0001] The utility model belongs to the field of ring gear sealing equipment, and specifically relates to an oil-receiving sealing device for a large ring gear protective cover. Background Technique

[0002] Many large rotary equipment, such as ball mills, semi-autogenous mills, rotary kilns, etc., use large ring gears. The gear transmission method is generally side transmission, and a protective cover is equipped on the outer ring of the gear. However, dust, small particle ore sand, etc. will enter the gear from the gap between the protective cover and the ring gear during the production process, causing gear damage; in case of situations such as flushing the mill, wear of the mill lining plate or fracture of the bolt resulting in slurry leakage, water and ore slurry are likely to enter the ring gear, causing gear wear and poor lubrication; when the equipment is running, the high-viscosity lubricating grease on the large gear is thrown out from this gap, soiling the equipment and the workshop, and it is extremely difficult to clean. Therefore, the gap between the protective cover and the ring gear needs to be protected by a sealing structure.

[0003] The existing large ring gear sealing structure is mostly composed of a large ring gear cover, a T-shaped seal, an inner hexagon bolt, and an adjusting base, as shown in the appendix Figure 1 . The materials of the large ring gear cover and the T-shaped seal are both ordinary carbon steel. The distance between the T-shaped seal and the large ring gear cover can be adjusted by the inner hexagon bolt on the side of the large gear seat. When the equipment is running, the T-shaped seal rotates with the large ring gear and forms a U-shaped gap with the large ring gear cover to block external sundries from entering the ring gear. However, the existing large ring gear sealing structure has the following problems: 1) Both the large ring gear cover and the T-shaped seal are rigid. The distance between the T-shaped seal and the large ring gear cover can be adjusted by the inner hexagon bolt on the side of the large gear seat. No matter how it is adjusted, there will be a gap between the T-shaped seal and the large ring gear cover, which can block external slightly larger sundries from entering the ring gear, but it cannot seal oil, water, ore slurry, fine ore sand, etc. Once sand and ore slurry enter, it will cause tooth surface damage. At the same time, large equipment has a high load, and high-viscosity gear lubricating oil is used for the large gear. It is extremely difficult to clean after sundries enter. 2) During the use of the existing large ring gear cover, the shell deforms and rubs against the T-shaped seal, and equipment failures are very likely to occur. To avoid the friction between the large ring gear cover and the T-shaped seal, only the T-shaped seal can be adjusted to widen the gap between the large ring gear cover and the T-shaped seal. However, after widening, the lubricating oil is likely to leak out, seriously polluting the surrounding working environment, and external dust is easy to enter the internal oil pool of the ring gear to pollute the lubricating oil, reducing the oil quality and accelerating tooth surface wear, thus increasing the operation and maintenance cost. Summary of the Invention

[0004] In order to overcome the problems existing in the background technology, the utility model provides an oil-receiving and sealing device for a large gear ring protective cover, which is installed on the side of the large gear ring protective cover. During use, the felt contacts the large gear seat by friction to form a seal, which can effectively prevent external water, pulp, fine ore sand, etc. from entering the large gear ring. The oil-receiving groove can block and divert the lubricating oil thrown out when the large gear rotates to the oil-receiving place at the lower part of the large gear ring protective cover for collection, effectively reducing the tooth surface damage caused by fine sundries entering the gear ring, extending the service life, reducing the maintenance cost, and also preventing the lubricating oil from leaking out and polluting the working environment.

[0005] To achieve the above object, the utility model is realized by the following technical solutions:

[0006] The oil-receiving and sealing device for the large gear ring protective cover includes a large gear ring protective cover, an oil-receiving groove and a felt. The oil-receiving grooves are symmetrically arranged along the left and right sides of the large gear ring protective cover, and the radian of the oil-receiving groove is the same as that of the large gear ring protective cover. The felt is fixed on the inner ring of the oil-receiving groove, one end of the felt is fixed on the oil-receiving groove, and the other end contacts the gear seat.

[0007] Preferably, the oil-receiving groove is arranged along the inner ring of the large gear ring protective cover for half a circle to the position of the small gear shaft, and the large gear ring protective cover above the small gear can be completely sealed after being installed;

[0008] Preferably, one set of oil-receiving grooves is provided, and the two oil-receiving grooves are symmetrically arranged along the large gear ring protective cover, and the connection parts of adjacent two oil-receiving grooves are welded.

[0009] Preferably, the oil-receiving groove is bolted to the large gear ring protective cover, and a rubber gasket is provided on the connection surface between the oil-receiving groove and the large gear ring protective cover.

[0010] Preferably, the felt is bolted to the inner ring of the oil-receiving groove, and a pressing plate ring is provided between the bolt and the felt.

[0011] Preferably, the cross-section of the oil-receiving groove is in the shape of a U-shaped groove, and includes a U-shaped groove, a connecting plate and an oil baffle. The connecting plate is arranged on the outer ring of the U-shaped groove and along the outer edge of the outer groove wall of the U-shaped groove. The oil baffle is arranged on the inner ring of the U-shaped groove and along the inner edge of the inner groove wall of the U-shaped groove. The connecting plate is bolted to the large gear ring protective cover along the large gear ring protective cover, and the felt is fixed on the outer wall of the inner side wall of the U-shaped groove.

[0012] Preferably, the U-shaped groove of the oil-receiving groove is arranged opposite to the T-shaped seal of the large gear ring.

[0013] The beneficial effects of the utility model:

[0014] The utility model can effectively prevent external water, pulp, fine ore sand, etc. from entering the large gear ring; the oil receiving groove can block and divert the lubricating oil thrown out when the large gear rotates to the oil receiving place at the lower part of the large gear ring protective cover for collection, effectively reducing the tooth surface damage caused by fine sundries entering the gear ring, prolonging the service life, reducing the maintenance cost, and also preventing the lubricating oil from leaking out and polluting the working environment. Description of the Drawings

[0015] Figure 1 Schematic diagram of the existing structure

[0016] Figure 2 is a cross-sectional view of the utility model (sectioned along the axial direction of the large gear ring);

[0017] Figure 3 is a connection relationship diagram of the utility model and the large gear ring protective cover;

[0018] Figure 4 is a schematic diagram of the oil receiving groove structure of the utility model;

[0019] Figure 5 is a connection relationship diagram of the utility model and the large gear ring protective cover (in the radial and axial directions of the large gear ring)

[0020] In the figure, 1 - large gear ring protective cover, 2 - oil receiving groove, 21 - U-shaped groove, 22 - connecting plate, 23 - oil baffle, 3 - felt, 4 - gear seat, 5 - rubber washer, 6 - pressing ring, 7 - T-shaped seal, 8 - bolt. Detailed Embodiment

[0021] In order to make the purpose, technical solution and beneficial effects of the utility model clearer, the preferred embodiments of the utility model will be described in detail below with reference to the drawings for the convenience of those skilled in the art to understand.

[0022] In the description of the utility model, unless otherwise specified, the orientation terms "inside" and "outside" are referenced with the center of the large gear ring as the reference. The side facing the center of the large gear ring is the inner side, and the side away from the center of the large gear ring is the outer side. The orientation terms "left" and "right" are the orientations when standing facing the large gear in a position perpendicular to the axial direction of the large gear ring. This orientation is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the utility model.

[0023] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0024] like Figure 2-5 As shown, the large gear ring protective cover oil receiving sealing device comprises a large gear ring protective cover 1, an oil receiving groove 2 and a felt 3. The oil receiving groove 2 is respectively arranged along the inner rings on the left and right sides of the large gear ring protective cover 1, and the curvature of the oil receiving groove 2 is consistent with that of the large gear ring protective cover 1. The cross section of the oil receiving groove 2 is a U-shaped groove. After the lubricating oil thrown out by the large gear is blocked by the oil receiving groove 2, it is collected in the oil receiving groove 2 and guided along the groove wall of the oil receiving groove 2 to the oil receiving area at the bottom of the large gear ring protective cover 1 for collection.

[0025] The oil collecting groove 2 includes a U-shaped groove 21, a connecting plate 22 and an oil baffle plate 23. The connecting plate 22 is arranged on the outer ring of the U-shaped groove 21 and along the outer edge of the outer groove wall of the U-shaped groove. The oil baffle plate 23 is arranged on the inner ring of the U-shaped groove 21 and along the inner edge of the inner groove wall of the U-shaped groove. The connecting plate 22 is bolted to the large gear ring protective cover 1 along the inner ring of the large gear ring protective cover 1. One side of the felt 3 is fixed on the outer wall of the inner side wall of the U-shaped groove 21, and the other side is in contact with the gear seat 4. Because the lubricating oil used in the large gear is a high-viscosity lubricating oil, after being thrown out of the tooth surface, it will be carried away by the airflow generated when the equipment rotates to form filamentary splashes. The felt 3 contacts the gear seat to form a closed space, which can effectively block the small amount of lubricating oil splashed out, and prevent the lubricating oil from leaking out and polluting the working environment; at the same time, external debris, especially the water for washing the mill cylinder and the slurry leaked from the wear of the mill liner can be blocked by the felt 3, and a small amount of ore sand and water enters the felt seal during the rotation of the equipment, and will be diverted to the oil collecting place together with the lubricating oil collected in the oil collecting trough to avoid entering the large gear ring protective cover 1, thereby effectively playing a sealing role.

[0026] The U-shaped groove 21 of the oil receiving groove 2 is arranged opposite to the T-shaped seal 7 of the large gear ring.

[0027] The oil receiving groove 2 is arranged in a group, and the two oil receiving grooves 2 are arranged symmetrically along the large ring gear protective cover 1. A half circle is arranged in the inner ring shape of the large ring gear protective cover 1 to the position of the pinion shaft, and a sealed groove body is formed above the pinion gear. The connection between the two oil receiving grooves 2 is welded.

[0028] As a preferred solution, a rubber gasket 5 is provided on the connection surface between the connecting plate 22 and the large gear ring protective cover 1 .

[0029] As a preferred solution, the felt 3 is connected to the inner ring of the oil catch tray 2 by bolts, and a pressing plate ring 6 is provided between the bolts and the felt 3.

[0030] During the operation of the large gear ring, from the inside to the outside, the oil catch tray 2 serves as the first line of defense to block the lubricating oil thrown out by the large gear and divert it to the oil collection point for collection. The felt 3 forms the second line of defense to block a small amount of lubricating oil that is carried by the airflow generated during the rotation of the equipment and forms filamentous splashes, preventing the lubricating oil from leaking out and polluting the working environment. From the outside to the inside, the felt 3 serves as the first line of defense and can block water, pulp, small ore sands and other foreign objects. A small amount of small debris is diverted to the oil collection point for collection together with the thrown-out lubricating oil by the oil catch tray as the second line of defense. It can effectively prevent small debris from entering the gear ring, causing tooth surface damage, extend the service life and reduce the maintenance cost. It can also prevent the lubricating oil from leaking out and polluting the working environment. This structure has been used in the semi-autogenous mills and ball mills of the concentrator, and the use effect is good, which can effectively play the role of sealing oil from the inside and blocking water and sand from the outside.

[0031] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in terms of form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A large gear ring protective cover oil receiving sealing device, characterized in that: The invention comprises a large gear ring protective cover (1), an oil receiving groove (2) and a felt (3); the oil receiving groove (2) is arranged along the inner ring of the large gear ring protective cover (1), and the curvature of the oil receiving groove (2) is consistent with that of the large gear ring protective cover (1); the felt (3) is fixed to the inner ring of the oil receiving groove (2), one end of the felt (3) is fixed to the oil receiving groove (2), and the other end is in contact with the gear seat (4).

2. The large gear ring protective cover oil receiving sealing device according to claim 1, characterized in that: The oil receiving groove (2) is arranged along the inner circle of the large gear ring protective cover (1) for half a circle to the position of the pinion shaft, and is sealed above the pinion.

3. The large gear ring protective cover oil receiving sealing device according to claim 2, characterized in that: The oil receiving groove (2) is provided in a group, and two oil receiving grooves (2) are symmetrically arranged along the large gear ring protection cover (1), and the connection between two adjacent oil receiving grooves (2) is welded.

4. The large gear ring protective cover oil receiving sealing device according to claim 2, characterized in that: The oil receiving groove (2) is bolted to the large gear ring protective cover (1), and a rubber gasket (5) is provided on the connection surface between the oil receiving groove (2) and the large gear ring protective cover (1).

5. The large gear ring protective cover oil receiving sealing device according to claim 1, characterized in that: The felt (3) is connected to the inner ring of the oil receiving groove (2) by means of bolts, and a pressure plate ring (6) is provided between the bolts and the felt (3).

6. The large gear ring protective cover oil receiving sealing device according to any one of claims 1 to 5, characterized in that: The cross section of the oil receiving groove (2) is a U-shaped groove, comprising a U-shaped groove (21), a connecting plate (22) and an oil baffle plate (23); the connecting plate (22) is arranged on the outer ring of the U-shaped groove (21) and is arranged along the outer edge of the outer groove wall of the U-shaped groove; the oil baffle plate (23) is arranged on the inner ring of the U-shaped groove (21) and is arranged along the inner edge of the inner groove wall of the U-shaped groove; the connecting plate (22) is bolted to the large gear ring protective cover (1) along the large gear ring protective cover (1), and the felt (3) is fixed to the outer wall of the inner side wall of the U-shaped groove.

7. The large gear ring protective cover oil receiving sealing device according to claim 6, characterized in that: The U-shaped groove of the oil receiving groove (2) is arranged opposite to the T-shaped seal (7) of the large gear ring.

Images