A sprocket structure of magnetic separator

Abstract

The present invention discloses a sprocket structure of a magnetic separator, comprising: a rotating shaft, a cylindrical sprocket housing, one end of the cylindrical sprocket housing having an end plate, the cylindrical sprocket housing being sleeved on the rotating shaft, and the end plate being connected to the end of the rotating shaft by a limiting screw; a gear portion and a limiting flange ring are arranged on the outer side of the cylindrical sprocket housing, and a chain-off zone is formed between the gear portion and the limiting flange ring; a fan-shaped opening is opened on the side of the rotating shaft, an inner tooth plate is fixedly connected to the inner side of the cylindrical sprocket housing and located inside the fan-shaped opening, and a first elastic sheet and a second elastic sheet are arranged on the inner side of the fan-shaped opening and located on both sides of the inner tooth plate, respectively. This is to solve the problem that when the magnetic separator is running for a long time, a chain slip is likely to occur between the transmission gear and the chain, causing the magnetic drum to stop secretly.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic separator sprockets, and in particular to a magnetic separator sprocket structure. Background Art

[0002] Magnetic separators are widely used in the field of coal mining. They run for a long time every day (normally more than 20 hours a day). In addition, due to the humid operating environment, the transmission chain and gears of the magnetic separators are subject to greater wear during operation.

[0003] The current means used are to apply oil to the sprockets to reduce wear and increase the service life of the sprockets, but this does not fundamentally solve the problem, resulting in frequent replacement of transmission gears and chains, and chain slippage (chain drop) during operation causing the magnetic drum to stop (stop operating), resulting in a large loss of heavy medium. For this reason, the present invention provides a sprocket structure that can operate stably for a long time. Summary of the invention

[0004] In order to solve the above shortcomings and deficiencies of the prior art, an object of the present invention is to provide a sprocket structure for a magnetic separator.

[0005] The technical solution of the present invention is a magnetic separator sprocket structure, comprising:

[0006] Rotating shaft;

[0007] A cylindrical sprocket housing, one end of which has an end plate, the cylindrical sprocket housing is sleeved on the rotating shaft, and the end plate is connected to the end of the rotating shaft through a limiting screw;

[0008] The outer side of the cylindrical sprocket housing is provided with a gear portion and a limiting flange ring, and a chain-off zone is formed between the gear portion and the limiting flange ring;

[0009] A fan-shaped opening is provided on the side of the rotating shaft, an inner tooth plate is fixedly connected to the inner side of the cylindrical sprocket housing and located inside the fan-shaped opening, and a first elastic sheet and a second elastic sheet are respectively provided on the inner side of the fan-shaped opening and located on both sides of the inner tooth plate.

[0010] Optionally, a stop ring is provided on the side of the rotating shaft, and a sealing ring is provided between the stop ring and the end of the cylindrical sprocket housing.

[0011] Optionally, an oil filling hole is provided on the side of the cylindrical sprocket housing.

[0012] Optionally, an oil storage groove is provided on the side of the rotating shaft and located on the inner side of the cylindrical sprocket housing.

[0013] Optionally, a threaded hole is provided at the end of the rotating shaft, a mounting hole is provided at the end of the end plate, and a stopper plate and an elastic ring are provided on the side of the limiting screw and between the end plate and the end of the limiting screw.

[0014] Optionally, the first elastic sheet and the second elastic sheet are both formed by staggered stacking of elastic plates and metal plates.

[0015] Optionally, the thickness of the second elastic sheet is greater than twice the thickness of the first elastic sheet.

[0016] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention arranges the tooth portion on a cylindrical sprocket housing, which is sleeved on a rotating shaft, and uses a fan-shaped opening and an inner tooth plate structure for blocking, thereby realizing transmission between the cylindrical sprocket housing and the rotating shaft. During this process, the inner tooth plate has a certain movable space, and uses the first elastic sheet and the second elastic sheet for flexible buffering, so that a certain buffer space is provided between the rotating shaft and the cylindrical sprocket housing, thereby avoiding impact during transmission between the sprocket and the chain, and avoiding the problem of chain slippage (chain drop), which can meet the long-term operation of the magnetic separator and ensure normal production, and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the present invention;

[0018] Figure 2 for Figure 1 Section view of the AA section line;

[0019] Figure 3 for Figure 2 Enlarged view of point B in the middle;

[0020] Figure 4 A top view of the present invention;

[0021] Figure 5 It is an exploded view of the present invention.

[0022] Legend:

[0023] 1. Rotating shaft; 2. Oil storage groove; 3. Fan-shaped mouth; 4. Stop ring; 5. Threaded hole; 6. Cylindrical sprocket housing; 7. Tooth part; 8. End plate; 9. Mounting hole; 10. Limiting screw; 11. Stop plate; 12. Elastic ring; 13. Internal tooth plate; 14. First elastic plate; 15. Second elastic plate; 16. Elastic plate; 17. Metal plate; 18. Oil filling hole; 19. Limit flange ring; 20. Chain release area. DETAILED DESCRIPTION

[0024] The invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0025] refer to Figures 1 to 5, a magnetic separator sprocket structure, comprising:

[0026] The rotating shaft 1 and the cylindrical sprocket housing 6 , one end of which is provided with an end plate 8 , the cylindrical sprocket housing 6 is sleeved on the rotating shaft 1 , and the end plate 8 is connected to the end of the rotating shaft 1 through a limiting screw 10 .

[0027] One open end of the cylindrical sprocket housing 6 is sleeved on the rotating shaft 1, and the limiting screw 10 is threadedly connected to the rotating shaft 1. The end of the limiting screw 10 limits the cylindrical sprocket housing 6 from sliding outward, that is, the limiting screw 10 is used to firmly install the cylindrical sprocket housing 6.

[0028] A gear tooth portion 7 and a limiting flange ring 19 are provided on the outer side of the cylindrical sprocket housing 6 , and a chain-off area 20 is formed between the gear tooth portion 7 and the limiting flange ring 19 .

[0029] The gear tooth portion 7 cooperates with the chain, and a sprocket is also provided on the output shaft of the power structure to realize power transmission between them. After the existing chain falls off, since the sprocket at the power end still keeps rotating, it will interfere with the chain for a period of time after falling off, causing friction or jamming between the chain and the equipment, which will cause damage to the chain. The sprocket is provided with a chain-off zone 20. After the chain slips off, it falls in the chain-off zone 20. The chain still maintains a basic tensioned state (it will become a little looser than before it falls off), and the other side of the chain will not be decoupled from the sprocket at the output end, but the power can no longer be transmitted, which is convenient for the operator to resume production. It is used in a magnetic separator to ensure long-term operation of the equipment.

[0030] A sector opening 3 is provided on the side of the rotating shaft 1, an inner tooth plate 13 is fixedly connected to the inner side of the cylindrical sprocket housing 6 and located inside the sector opening 3, and a first elastic sheet 14 and a second elastic sheet 15 are respectively provided on the inner side of the sector opening 3 and located on both sides of the inner tooth plate 13.

[0031] The gear tooth portion 7 rotates with the chain, and then drives the cylindrical sprocket housing 6 to rotate, and the inner tooth plate 13 rotates, so that the inner tooth plate 13 squeezes the first elastic sheet 14. When the squeezing reaches a certain force, it can drive the rotating shaft 1 to rotate. In this process, the transmission is carried out by relying on the first elastic sheet 14. Its own elasticity can ensure the stable transmission of torque, offset the impact between the sprocket and the chain, and ensure that the sprocket can operate stably for a long time.

[0032] Reference Figure 5 In this embodiment, a stop ring 4 is provided on the side of the rotating shaft 1, and a sealing ring is provided between the stop ring 4 and the end of the cylindrical sprocket housing 6. The stop ring 4 and the end of the cylindrical sprocket housing 6 are supported against each other, and a certain sealing performance is achieved, which facilitates the formation of an oil storage sealing space inside the cylindrical sprocket housing 6.

[0033] Reference Figure 5In this embodiment, an oil filling hole 18 is provided on the side of the cylindrical sprocket housing 6 to facilitate oiling the inner side of the cylindrical sprocket housing 6. The injected lubricating oil can reduce the friction between the cylindrical sprocket housing 6 and the rotating shaft 1.

[0034] An oil storage groove 2 is provided on the side of the rotating shaft 1 and located on the inner side of the cylindrical sprocket housing 6 for storing the added lubricating oil.

[0035] A threaded hole 5 is provided at the end of the rotating shaft 1, a mounting hole 9 is provided at the end of the end plate 8, a stopper 11 and an elastic ring 12 are provided on the side of the limiting screw 10 and between the end plate 8 and the end of the limiting screw 10. The stopper 11 and the elastic ring 12 are sleeved on the limiting screw 10, and then the head of the limiting screw 10 is passed through the mounting hole 9 and threadedly connected to the threaded hole 5. The stopper 11 is close to the end plate 8, and can play a certain stopping role on the side of the mounting hole 9 to prevent the lubricating oil from overflowing from here.

[0036] Reference Figure 2 In this embodiment, the first elastic sheet 14 and the second elastic sheet 15 are both formed by staggered stacking of elastic plates 16 and metal plates 17. The thickness of the second elastic sheet 15 is greater than twice the thickness of the first elastic sheet 14. Metal plates 17 are used on both outer sides of the first elastic sheet 14, and metal plates 17 are used on both outer sides of the second elastic sheet 15.

[0037] The drum of the magnetic separator can only rotate in one direction. Figure 2 For reference, the drum of the magnetic separator rotates counterclockwise, and the first elastic sheet 14 is squeezed during the transmission process. The first elastic sheet 14 provides power transmission. The thickness of the second elastic sheet 15 is relatively large, and its elastic elongation is also correspondingly large, so that the end of the second elastic sheet 15 is always attached to the side of the inner tooth plate 13.

[0038] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A magnetic separator sprocket structure, comprising: Rotating shaft (1); It is characterized by further comprising: A cylindrical sprocket housing (6), one end of the cylindrical sprocket housing (6) having an end plate (8), the cylindrical sprocket housing (6) being sleeved on the rotating shaft (1), and the end plate (8) being connected to the end of the rotating shaft (1) via a limiting screw (10); The outer side of the cylindrical sprocket housing (6) is provided with a gear portion (7) and a limiting flange ring (19), and a chain-off area (20) is formed between the gear portion (7) and the limiting flange ring (19); A fan-shaped opening (3) is provided on the side of the rotating shaft (1); an inner tooth plate (13) is fixedly connected to the inner side of the cylindrical sprocket housing (6) and located inside the fan-shaped opening (3); and a first elastic sheet (14) and a second elastic sheet (15) are respectively provided on the inner side of the fan-shaped opening (3) and located on both sides of the inner tooth plate (13); The first elastic sheet (14) and the second elastic sheet (15) are both formed by staggered stacking of elastic plates (16) and metal plates (17); the thickness of the second elastic sheet (15) is greater than twice the thickness of the first elastic sheet (14); A stop ring (4) is provided on the side of the rotating shaft (1), and a sealing ring is provided between the stop ring (4) and the end of the cylindrical sprocket housing (6); An oil filling hole (18) is provided on the side of the cylindrical sprocket housing (6); An oil storage groove (2) is provided on the side of the rotating shaft (1) and located on the inner side of the cylindrical sprocket housing (6); A threaded hole (5) is formed at the end of the rotating shaft (1), a mounting hole (9) is formed at the end of the end plate (8), and a stopper (11) and an elastic ring (12) are provided on the side of the limiting screw (10) and between the end plate (8) and the end of the limiting screw (10).

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