KR19990010404U - Oil leakage prevention device for bearing block of crusher rotor shaft - Google Patents

Abstract

The present invention relates to a crusher for crushing the fuel coal used during the operation of the furnace to a certain size, in particular, in order to prevent the oil from leaking through the gap between the sleeve and the bearing block cover, the rotor for rotating the crusher A bearing block 10 having a bearing 14 mounted on an adapter 11 wrapped along an outer circumferential surface of the shaft 1 via a lock nut 12 and a lock washer 13; First and second sleeves 20a and 20b mounted to fix the bearing 14 along the inner ring of the bearing block 10; First and second bearing block covers (30a, 30b) mounted to limit the axial movement of the rotor shaft (1) along the outer ring of the bearing block (10); It is installed in communication with the upper side of the bearing block 10, the oil is provided with a flow control device 41 for adjusting the amount of oil on the pipeline and a manual valve 42 for selectively blocking the flow of oil A hydraulic line 40; It consists of an oil discharge line 50 is installed in communication with the side of the bearing block 10, the oil leakage phenomenon of the source is blocked by the first, second sleeve and the first and second bearing block cover and filtering, etc. Not only does it pollute the environment, but it also extends the life of peripheral parts such as driving belts.

Description

Oil leakage prevention device for bearing block of crusher rotor shaft

The present invention relates to a crusher for crushing fuel coal used in a blast furnace operation to a certain size, and in particular, a crusher rotor shaft that can prevent oil leakage through a gap between a sleeve of a rotor that rotates the crusher and a bearing block cover. It relates to an oil leak prevention device for bearing blocks.

In general, since a large amount of fuel is required during the operation of the furnace, coal is transported using a conveyor belt at a yard, and the coal is crushed to 3 mm or less in a crusher, and then transferred to a mixing tank and charged in an oven. Cokes are produced with moderate calorific value.

In order to improve the quality of the coke, first of all, since the uniformity of the crushing degree of coal is required, the crusher is provided with a hammer so that the coal can be crushed to a certain size. It is connected to the shaft of the rotating rotor shaft to be rotated.

Therefore, in order to uniformly rotate the hammer, oil leakage between the sleeve fixed to the rotor shaft, heat generation inside the bearing block, filtering of the bearing block cover, etc. must be properly adjusted. It is.

That is, the rotor shaft of the conventional crusher, which is capable of performing the above function, is provided with an oil ring 111 on the outer circumferential surface of the rotor shaft 100 as shown in the installation state of FIG. 1 and the cross-sectional view of FIG. 2. Sleeve 110 is mounted, and a bearing block 120 having a bearing 123 fixed thereto is mounted on an outer circumferential surface of the sleeve 110 via a lock nut 121 and a lock washer 122. Both sides of the block 120 has a structure in which a bearing block cover 130 with filtering 131 is mounted.

Here, the oil supplied from the oil inlet 140 provided on the side of the rotor shaft 100 cools the inside of the bearing block 120 in a state in which foreign matter is filtered in the filtering 131. 140).

However, oil is leaked into the gap between the sleeve 110 and the filtering 131 due to the centrifugal force and internal resistance generated due to the rotation of the bearing 123 provided in the bearing block 120. There is a problem that the normal operation is not possible due to the scattering of the leaked oil, which not only pollutes the surrounding environment but also damages the driving belt.

Accordingly, the present invention is devised to solve the above problems, the sleeve of the rotor for rotating the crusher, and the bearing block of the crusher rotor shaft to prevent the oil leakage through the gap of the bearing block cover The object of the present invention is to provide an oil leakage preventing device for oil.

The present invention for achieving the object of the above bar, the bearing block is mounted on the adapter wrapped along the outer circumferential surface of the rotor shaft via a lock nut and the lock washer; It is mounted to fix the bearing along the inner ring of the bearing block, and bent at both sides to form a wing piece to prevent oil from scattering, and an oil ring groove for sealing is formed along the inner circumferential surface. First and second sleeves each having oil screw grooves formed therein along with fixing screw grooves fixed to the rotor shaft through fastening means; It is mounted to limit the axial movement of the rotor shaft along the outer ring of the bearing block, the support jaw is formed in close contact with the bearing block along both sides, the filtering is formed to block the flow of oil on the inner peripheral surface and At the same time, a plurality of oil grooves are formed, and a plurality of oil guide grooves for guiding oil scattered on the outer circumferential direction are formed, while an oil guide hole communicating with the oil grooves to return oil to the cylinder block is provided. First and second bearing block covers respectively formed; An oil hydraulic line installed in communication with the upper side of the bearing block, the oil pressure line having a flow control device for adjusting the amount of oil on the pipeline and a manual valve for selectively blocking the flow of oil; It has a structure consisting of an oil discharge line installed in communication with the side of the bearing block.

Therefore, by installing the oil leakage preventing device of the bearing block having the above-described structure, the oil leakage phenomenon of the source is blocked by the first and second sleeves and the first and second bearing block covers and filtering, so that the surrounding environment is polluted. Not only that, but also extended the life of peripheral parts such as drive belts.

1 is an installation state diagram showing the overall use of the bearing block of the crusher rotor shaft according to the prior art,

Figure 2 (a), (b) is a cross-sectional view schematically showing a bearing block cover and sleeve for a crusher rotor shaft in the prior art,

Figure 3 is an overall view showing a state in which the oil leakage preventing device of the bearing block for the crusher rotor shaft according to the present invention,

Figure 4 is a schematic diagram showing the overall oil leakage prevention of the bearing block for the crusher rotor shaft according to the present invention,

5 is a cross-sectional view and a partially enlarged view showing a bearing cover of an oil leakage preventing device of a bearing block for a crusher rotor shaft according to the present invention;

6 (a), (b) is a cross-sectional view showing the sleeve of the oil leakage preventing device of the bearing block for the crusher rotor shaft according to the present invention.

* Description of the symbols for the main parts of the drawings *

1: Rotor Shaft 10: Bearing Block

11: adapter 12: lock nut

13: lock washer 14: bearing

20a, 20b: 1st and 2nd slab 21 wing

22: oil ring groove 23: oil set groove

24: set screw groove 30a, 30b: the first and second bearing block cover

31: support jaw 32: filtering

33: oil groove 34: oil guide groove

35: oil guide hole 40: oil inlet line

41: flow control device 42: manual valve

50: oil discharge line

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is an overall view showing a state in which the oil leakage preventing device for a bearing block of the crusher rotor shaft according to the present invention, Figure 4 is an overall view showing the oil leakage preventing device for a bearing block of the crusher rotor shaft according to the present invention. 5 is a schematic view showing a sectional view and a partial enlarged view of a bearing cover of an oil leakage preventing device for a bearing block of a crusher rotor shaft according to the present invention, and (a) and (b) of FIG. The sectional view of the sleeve of the oil leakage preventing device for the bearing block of the crusher rotor shaft, as shown in these figures, is provided with the lock nut 12 and the lock on the adapter 11 wrapped along the outer circumferential surface of the rotor shaft 1. A bearing block 10 on which the bearing 14 is mounted via the washer 13; It is mounted to fix the bearing 14 along the inner ring of the bearing block 10, is bent at a predetermined angle on both sides to form a wing piece 21 to prevent oil from scattering and sealing along the inner circumferential surface. Oil ring groove 22 for the formation is formed, a plurality of oil set grooves 23 are formed along the outer circumferential surface and at the same time the fixing screw groove 24 is fixed to the rotor shaft (1) through the fastening means First and second sleeves 20a and 20b respectively formed; Mounted to limit the axial movement of the rotor shaft (1) along the outer ring of the bearing block 10, the support jaw 31 is formed in close contact with the bearing block 10 along both sides, the inner peripheral surface Filtering 32 to block the flow of oil is formed at the same time a plurality of oil grooves 33 are formed, a plurality of oil guide grooves 34 for guiding oil scattered on the outer circumferential direction is formed On the other hand, the first and second bearing block cover (30a, 30b) which is in communication with the oil groove 33 is formed with an oil guide hole 35 for returning the oil to the cylinder block (10), respectively; It is installed in communication with the upper side of the bearing block 10, the oil is provided with a flow control device 41 for adjusting the amount of oil on the pipeline and a manual valve 42 for selectively blocking the flow of oil A hydraulic line 40; It has a structure consisting of an oil discharge line 50 is installed in communication with the side of the bearing block 10.

Here, the rotor shaft 1 is equipped with an adapter 11 along the outer circumferential surface, and the inner ring of the bearing block 10 via the lock nut 12 and the lock washer 13 to the adapter 11. This structure is fixed.

In addition, the first and second sleeves 20a and 20b are mounted on both lower portions of the bearing block 10, respectively, and the first and second sleeves 20a and 20b are bent at a predetermined angle on both sides thereof. The wing piece 21 which prevents scattering is protruded, and an oil ring groove 22 for sealing with the rotor shaft 1 is formed on an inner circumferential surface thereof, and a plurality of oil sets for collecting oil on the outer circumferential surface thereof. The groove 23 is formed in parallel.

In addition, the body of the first and second sleeves 20a and 20b has a structure in which a fixing screw groove 24 is formed to be fixed to the rotor shaft 1 through a fastening means.

Meanwhile, the first and second bearing block covers 30a and 30b are mounted to prevent the rotor shaft 1 from moving in the axial direction, and are formed along both sides of the bearing block 10. A support jaw 31 is formed to be in close contact with each other, and an inner circumferential surface is equipped with a filtering 32 to block the flow of oil, and a plurality of sides of the filtering 32 guide oil to the bearing block 10. Two oil grooves 33 are formed.

In addition, the receiving groove formed concave along the body of the first and second bearing block cover (30a, 30b) has a structure in which a plurality of oil guide grooves 34 for guiding the scattered oil in the inward direction is formed. have.

And, the body of the first and second bearing block cover (30a, 30b) has a structure in which the oil guide hole 35 for returning the oil introduced through the oil groove 33 to the cylinder block 10 is formed It is.

On the other hand, the upper portion of the bearing block 10 is equipped with an oil inlet line 40 is supplied with oil, the flow control device 41 for adjusting the amount of oil on the pipeline of the oil inlet line 40 and Each of the manual valves 42 for selectively blocking the flow of oil is provided.

In addition, the side of the bearing block 10 has a structure in which an oil discharge line 50 used as a passage for returning oil to the oil tank is mounted.

Of course, the manual valve 42 is to temporarily shut off the oil when the disassembly and inspection of the bearing block 10, it is usually in an open structure.

Hereinafter, described in detail with reference to the accompanying drawings illustrating the operation of the present invention.

First, the inner ring of the bearing 14 provided in the bearing block 10 is fixed by the fixing part 36 and the lock nut 12 of the first and second sleeves 20a and 20b. When the rotor shaft 1 is rotated by the lock washer 13, the rotor shaft 1 is not loosened, and the bearing 14 is sealed with the rotor shaft 1 by an oil ring constituting the oil ring groove 22. ) Outer ring is completely fixed by the first and second bearing block covers 30a and 30b, and at the same time, the first and second bearing block covers 30a and 30b move in the axial direction of the rotor shaft 1. This is to be avoided.

In addition, the oil introduced through the oil hydraulic line 40 is always through the manual valve 42, except for the case of repair or check through the flow control device 41, the inner peripheral surface of the bearing block 10 Passing through it is discharged through the oil discharge line 50 in the heat dissipation or oil film formation.

That is, the oil is scattered by the rotation of the rotor shaft 10 in the process of forced circulation and at the same time to the inside of the bearing block 10, the oil is scattered in the fixing screw groove (24) The oil tank through the oil discharge line 50 while falling to the lower portion of the bearing block 10 hit the wing piece 21 formed on both sides of the 1, 2 sleeves (20a, 20b) fixed by the (not shown) Not).

At this time, a part of the scattered oil that passes over the blade piece 21 is dropped by the first and second bearing block covers (30a, 30b), the dropped oil along the oil guide groove 34 Guided to the lower flows into the bearing block 10 is to be guided to the oil discharge line (50).

In addition, the oil that has passed into the gap between the rear side of the wing piece 21 of the first and second sleeves 20a and 20b exceeds the plurality of oil grooves 33 formed in the lower portion of the bearing block cover 30a and 30b. Finally, the filter 32 is completely blocked, and the blocked oil is guided into the bearing block 10 through the oil guide hole 35 and returned to the oil tank through the oil outlet 50.

As described above, according to the oil leakage preventing device for the bearing block of the crusher rotor shaft according to the present invention, the oil scattered due to the rotation of the rotor shaft 10 in the process of forced circulation of the oil is first 1, 2 is returned to the oil tank while hitting the wing piece 21 provided on both sides of the sleeve (20a, 20b) falls into the bearing block, and some of the scattered oil over the wing piece 21 is the first, 2 is dropped by the bearing block cover (30a, 30b) is guided along the oil guide groove 34 and returned to the interior of the bearing block 10, and fall into the gap between the rear side of the blade piece (21) The oil is returned to the bearing block 10 through the oil guide hole 35 while the oil is completely blocked by the filtering 32 after the oil groove 33 is finally shut off. Pollute Not only that, but the drive belt and the like has the effect of extending the life of the peripheral parts.

Claims (1)

A bearing block 10 having a bearing 14 mounted on the adapter 11 wrapped along the outer circumferential surface of the rotor shaft 1 via the lock nut 12 and the lock washer 13; It is mounted to fix the bearing 14 along the inner ring of the bearing block 10, is bent at a predetermined angle on both sides to form a wing piece 21 to prevent oil from scattering and sealing along the inner circumferential surface. Oil ring groove 22 for the formation is formed, a plurality of oil set grooves 23 are formed along the outer circumferential surface and at the same time the fixing screw groove 24 is fixed to the rotor shaft (1) through the fastening means First and second sleeves 20a and 20b respectively formed; Mounted to limit the axial movement of the rotor shaft (1) along the outer ring of the bearing block 10, the support jaw 31 is formed in close contact with the bearing block 10 along both sides, the inner peripheral surface Filtering 32 to block the flow of oil is formed at the same time a plurality of oil grooves 33 are formed, while a plurality of oil guide grooves 34 to guide the oil scattered on the outer peripheral surface inwardly formed First and second bearing block covers 30a and 30b communicating with the oil groove 33 and having oil guide holes 35 for returning oil to the cylinder block 10; It is installed in communication with the upper side of the bearing block 10, the oil is provided with a flow control device 41 for adjusting the amount of oil on the pipeline and a manual valve 42 for selectively blocking the flow of oil A hydraulic line 40; Oil leakage prevention device for a bearing block of the crusher rotor shaft, characterized in that consisting of the oil discharge line 50 is installed in communication with the side of the bearing block (10).