CN218845112U - Coal feeder bearing seal structure and coal feeder - Google Patents

Abstract

The sealing cover is used for covering the outside of a bearing positioned on a shell of the coal feeder and is installed on the inner wall of the shell, and a through hole for a rotating shaft of the coal feeder to penetrate through is formed in the sealing cover so that the rotating shaft can extend into the sealing cover and is connected with the bearing; the cleaning assembly is located outside the sealing cover and close to the through hole, and the cleaning assembly is used for contacting with the outer peripheral surface of the rotating shaft so as to clean the pulverized coal on the rotating shaft. The coal feeder bearing sealing structure can reduce the possibility that coal powder in the coal feeder enters the bearing, can avoid the phenomenon that the coal powder enters the bearing to cause rotation blockage or stop, is favorable for prolonging the service life of the bearing, and improves the operation reliability of the coal feeder.

Description

Coal feeder bearing seal structure and coal feeder

Technical Field

The disclosure relates to the technical field of bearing sealing, in particular to a bearing sealing structure of a coal feeder and the coal feeder.

Background

The coal feeder is a raw coal conveying machine for adjusting the coal amount entering the coal mill, a transmission part of the coal feeder is mostly arranged in a coal feeder shell, a bearing positioned in the coal feeder shell is easy to be invaded by coal powder, the rotation is blocked or stopped, the service cycle of the bearing is short, the normal operation of a rotating shaft connected with the bearing is influenced, and the normal operation of the coal feeder is not facilitated.

SUMMERY OF THE UTILITY MODEL

The bearing sealing structure of the coal feeder can reduce the possibility that coal powder in the coal feeder enters the bearing, is beneficial to prolonging the service life of the bearing and improves the operation reliability of the coal feeder.

In order to achieve the above object, according to one aspect of the present disclosure, the present disclosure provides a coal feeder bearing sealing structure, including a sealing cover and a sweeping assembly, where the sealing cover is configured to cover an outer portion of a bearing located on a casing of a coal feeder and is mounted on an inner wall of the casing, and a through hole is formed in the sealing cover for a rotating shaft of the coal feeder to pass through, so that the rotating shaft can extend into the sealing cover and be connected with the bearing; the cleaning assembly is located outside the sealing cover and close to the through hole, and the cleaning assembly is used for contacting with the outer peripheral surface of the rotating shaft so as to clean the pulverized coal on the rotating shaft.

Optionally, the cleaning assembly includes a connecting member and a cleaning member, the connecting member extends along the axis of the rotating shaft and is detachably connected to the outer wall of the sealing cover, the cleaning member is disposed on a side of the connecting member close to the rotating shaft, and one end of the cleaning member away from the connecting member is used for contacting with the outer peripheral surface of the rotating shaft.

Optionally, a clamping block is formed on one of the connecting piece and the sealing cover, and a clamping groove is formed on the other of the connecting piece and the sealing cover, and the clamping block is clamped with the clamping groove.

Optionally, the sweeping member is a scraper.

Optionally, the scraper blade includes scraper blade body and rubber sleeve, the scraper blade body connect in the connecting piece, the rubber sleeve sets up the scraper blade body is kept away from the one end of connecting piece, the rubber sleeve be used for with the outer peripheral face contact of axis of rotation.

Optionally, the number of the sweeping assemblies is multiple, and the sweeping assemblies are arranged at intervals along the circumferential direction of the rotating shaft.

Optionally, one end of the sealing cover opposite to the through hole is formed into an open end, the bearing is located in the open end, the open end is used for being connected with the inner wall of the housing, and a sealing strip is arranged at the open end and used for sealing a gap between the sealing cover and the inner wall of the housing.

Optionally, the coal feeder bearing sealing structure further comprises an air blowing pipeline, an air outlet of the air blowing pipeline is communicated with the inside of the sealing cover, and an air inlet of the air blowing pipeline is used for being communicated with an air supply assembly.

Optionally, an oil filling port is formed in the sealing cover, the oil filling port is used for lubricating oil filling equipment to pass through so as to fill lubricating oil into the bearing, and a sealing plug is detachably mounted at the oil filling port.

According to another aspect of the disclosure, the disclosure provides a coal feeder, which comprises a housing, a coal feeder body mounted in the housing, a bearing mounted on the housing, and the coal feeder bearing sealing structure, wherein the coal feeder body is provided with a rotating shaft, a sealing cover of the coal feeder bearing sealing structure is covered outside the bearing and mounted on the inner wall of the housing, and the rotating shaft penetrates through a through hole in the sealing cover and is connected with the bearing.

Through the technical scheme, the sealing cover is arranged on the inner wall of the shell of the coal feeder and covers the outer part of the bearing positioned on the shell, so that coal powder in the coal feeder can be prevented from entering the bearing to a certain extent, and the bearing is protected. The axis of rotation of coal feeder can pass the through-hole on the sealed cowling and be connected with the inside bearing of sealed cowling, the axis of rotation can rotate for the sealed cowling, be located the sealed cowling outside and near the subassembly that cleans that the through-hole set up can with be located the outer peripheral face contact of the outside axis of rotation of sealed cowling, at axis of rotation pivoted in-process, clean the subassembly on the sealed cowling and can play the effect of cleaning to the axis of rotation, clean the subassembly promptly and can clean the buggy that is located the axis of rotation outer peripheral face, thereby can reduce the buggy and get into the sealed cowling and invade the possibility of bearing from the through-hole, be favorable to protecting the bearing and improving the reliability of coal feeder operation.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a side schematic view of a coal feeder bearing seal arrangement provided by an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic perspective view of a coal feeder bearing seal arrangement provided by an exemplary embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of a coal feeder bearing seal arrangement provided in an exemplary embodiment of the present disclosure housed outside of a bearing and attached to an inner wall of a housing of a coal feeder;

fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Description of the reference numerals

1-sealing the cover; 11-a through hole; 12-open end; 13-a connecting plate; 131-mounting holes; 2-a shell; 21-inner wall; 3-a bearing; 4-a rotating shaft; 5-sealing strips; 6-a blowing pipeline; 7-oil filler; 8-sealing plug; 9-a coal feeder body; 100-a sweeping component; 110-a connector; 120-a sweeping member; 121-a squeegee; 1211-scraper body; 1212-rubber sleeve; 200-a fixture block; 300-card slot.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, terms of orientation such as "inner and outer" are used to refer to the inner and outer of the profile of each component itself, and terms such as "first", "second", and the like are used to distinguish one element from another, without order or importance.

As shown in fig. 1 to 4, according to one aspect of the present disclosure, the present disclosure provides a coal feeder bearing sealing structure, including a sealing cover 1 and a cleaning assembly 100, where the sealing cover 1 is configured to cover an outer portion of a bearing 3 located on a housing 2 of a coal feeder and is mounted on an inner wall 21 of the housing 2, a through hole 11 is formed in the sealing cover 1 for passing a rotating shaft 4 of the coal feeder, so that the rotating shaft 4 can extend into the sealing cover 1 and be connected with the bearing 3, the cleaning assembly 100 is located on the outer portion of the sealing cover 1 and is disposed near the through hole 11, and the cleaning assembly 100 is configured to contact with an outer circumferential surface of the rotating shaft 4 to clean pulverized coal on the rotating shaft 4.

Through the technical scheme, the sealing cover 1 is arranged on the inner wall 21 of the shell 2 of the coal feeder and covers the outside of the bearing 3 positioned on the shell 2, so that pulverized coal in the coal feeder can be prevented from entering the bearing 3 to a certain extent, and the protection of the bearing 3 is facilitated. In addition, because the rotating shaft 4 of the coal feeder passes through the through hole 11 on the sealing cover 1 and is connected with the bearing 3 inside the sealing cover 1, the rotating shaft 4 can rotate relative to the sealing cover 1, and the cleaning assembly 100 positioned outside the sealing cover 1 and close to the through hole 11 can be contacted with the outer peripheral surface of the rotating shaft 4 positioned outside the sealing cover 1, in the rotating process of the rotating shaft 4, the cleaning assembly 100 on the sealing cover 1 can play a cleaning role on the rotating shaft 4, namely the cleaning assembly 100 can clean coal dust positioned on the outer peripheral surface of the rotating shaft 4, so that the possibility that the coal dust enters the sealing cover 1 from the through hole 11 and enters the bearing 3 can be reduced, the bearing 3 can be protected, and the reliability of the operation of the coal feeder can be improved.

Alternatively, as shown in fig. 1, 3 and 4, the sweeping assembly 100 may include a connecting member 110 and a sweeping member 120, the connecting member 110 may extend along the axis of the rotating shaft 4 and be detachably coupled to the outer wall of the sealing cap 1, the sweeping member 120 may be disposed on a side of the connecting member 110 adjacent to the rotating shaft 4, and an end of the sweeping member 120 remote from the connecting member 110 may be adapted to contact the outer circumferential surface of the rotating shaft 4, so that the fine coals on the outer circumferential surface of the rotating shaft 4 may be swept. Because the connecting piece 110 is detachably connected to the outer wall of the sealing cover 1, when the cleaning assembly 100 is damaged, the cleaning assembly 100 can be replaced by detaching the connecting piece 110, which is beneficial to improving the convenience of operation.

In order to realize the detachable connection of the connector 110 and the sealing cap 1, as an embodiment, as shown in fig. 3 and 4, one of the connector 110 and the sealing cap 1 may be formed with a latch 200, the other of the connector 110 and the sealing cap 1 may be formed with a latch groove 300, and the latch 200 and the latch groove 300 may be latched. As another embodiment, a through hole for the first fastening member to pass through may be formed on the connecting member 110, a first threaded hole for matching with the through hole and the first fastening member may be formed on the sealing cap 1, and the connecting member 110 and the sealing cap 1 may be detachable through threaded connection.

In order to clean the pulverized coal on the rotating shaft 4, as one embodiment, as shown in fig. 1, 3 and 4, the cleaning member 120 may be a scraper 121, one end of the scraper 121 may be connected to the connecting member 110, and one end of the scraper 121 remote from the connecting member 110 may contact the outer circumferential surface of the rotating shaft 4, so that the outer circumferential surface of the rotating shaft 4 can be cleaned when the rotating shaft 4 rotates. As another embodiment, the cleaning member 120 may be a brush, and the brush may include a connection end connected to the connection member 110 and a cleaning end contacting the outer circumferential surface of the rotation shaft 4, and the cleaning end can clean the outer circumferential surface of the rotation shaft 4 when the rotation shaft 4 rotates.

Alternatively, for the embodiment in which the cleaning member 120 is the blade 121, as shown in fig. 1, 3 and 4, the blade 121 may include a blade body 1211 and a rubber sleeve 1212, the blade body 1211 may be connected to the connecting member 110, the rubber sleeve 1212 may be provided at an end of the blade body 1211 remote from the connecting member 110, and the rubber sleeve 1212 may be adapted to contact the outer circumferential surface of the rotating shaft 4. Since the rubber sleeve 1212 contacting the rotating shaft 4 is disposed on the scraper body 1211, and the rubber sleeve 1212 is an elastic structure, the possibility of damage to the cleaning assembly 100 can be reduced during cleaning of the pulverized coal on the rotating shaft 4, which is beneficial to prolonging the service life of the cleaning assembly 100.

In order to enhance the cleaning effect of the cleaning assembly 100 on the rotating shaft 4, as shown in fig. 1 and 3, the cleaning assembly 100 may be provided in plurality, the cleaning assemblies 100 may be arranged at intervals along the circumferential direction of the rotating shaft 4, the cleaning assemblies 100 may have a plurality of different contact positions with the outer circumferential surface of the rotating shaft 4 when the rotating shaft 4 stops rotating, and the cleaning assemblies may clean the outer circumferential surface of the rotating shaft 4 for a plurality of times when the rotating shaft 4 rotates, so that the pulverized coal on the rotating shaft 4 may be cleaned more cleanly, and the possibility of the pulverized coal entering the inside of the sealing cover 1 may be reduced.

Alternatively, as shown in fig. 1 and 2, an end of the sealing cap 1 opposite to the through hole 11 may be formed as an open end 12, the bearing 3 may be located in the open end 12, and the open end 12 may be used to be connected with the inner wall 21 of the housing 2, and a sealing strip 5 may be provided at the open end 12, and the sealing strip 5 may be used to seal a gap between the sealing cap 1 and the inner wall 21 of the housing 2. The end of the sealing cover 1 opposite to the through hole 11 is formed into an open end 12, and the bearing 3 is positioned in the open end 12, so that the sealing cover 1 can cover the outside of the bearing 3, and the possibility that the pulverized coal in the coal feeder enters the bearing 3 can be reduced. Furthermore, the open end 12 of the sealing cover 1 is mounted on the inner wall 21 of the casing 2 of the coal feeder, and the sealing strip 5 is arranged on the open end 12 of the sealing cover 1 to seal the gap between the sealing cover 1 and the inner wall 21 of the casing 2, so that the pulverized coal in the coal feeder can be prevented from entering the sealing cover 1 from the gap and further invading the bearing 3 to damage the bearing 3, and the bearing 3 is protected and the normal operation of the coal feeder is maintained.

Alternatively, as shown in fig. 2, the sealing cap 1 may be provided with a connecting plate 13 at a side near the open end 12, the connecting plate 13 may be formed with a mounting hole 131, the inner wall 21 of the casing 2 of the coal feeder may be formed with a second threaded hole matched with the mounting hole 131, and a second fastening member may be threaded through the mounting hole 131 and the second threaded hole, so as to connect the sealing cap 1 and the casing 2.

In order to further prevent the pulverized coal inside the coal feeder from entering the bearing 3, as shown in fig. 1 to 3, the coal feeder bearing sealing structure may further include a blowing pipe 6, an air outlet of the blowing pipe 6 may be communicated with the inside of the sealing cover 1, and an air inlet of the blowing pipe 6 may be used for being communicated with the air supply assembly. The wind supplied by the wind supply assembly to the sealing cover 1 can make the inside of the sealing cover 1 in a positive pressure state, and the wind in the sealing cover 1 can overflow from the position of the sealing cover 1 with gaps, for example, the wind in the sealing cover 1 can overflow from the gap between the hole wall of the through hole 11 and the outer peripheral surface of the rotating shaft 4, so that the entry of pulverized coal can be further prevented, and the protection of the bearing 3 is facilitated.

Alternatively, as shown in fig. 1, the sealing cover 1 may be provided with an oil filling port 7, the oil filling port 7 may be used for a lubricating oil filling device to pass through to fill the bearing 3 with lubricating oil, and a sealing plug 8 may be detachably mounted at the oil filling port 7. When the bearing 3 has the demand of filling lubricating oil, the sealing plug 8 at the oil filling opening 7 can be taken down, so that lubricating oil filling equipment penetrates through the oil filling opening 7 on the sealing cover 1 to fill lubricating oil for the bearing 3 positioned in the sealing cover 1, the rotation of the bearing 3 is smoother, the rotation of the bearing 3 is prevented from being blocked, the maintenance of the bearing 3 is facilitated, and the reliability of the operation of the coal feeder is improved. After the operation of filling the lubricating oil into the bearing 3 is completed, the sealing plug 8 can be installed back to the oil filling port 7, so that pulverized coal in the coal feeder can be prevented from entering the sealing cover 1 through the oil filling port 7, and the protection of the bearing 3 in the sealing cover 1 is facilitated.

According to another aspect of the present disclosure, as shown in fig. 3, the present disclosure provides a coal feeder, comprising a housing 2, a coal feeder body 9 installed in the housing 2, a bearing 3 installed on the housing 2, and the above coal feeder bearing sealing structure, wherein the coal feeder body 9 has a rotating shaft 4, a sealing cover 1 of the coal feeder bearing sealing structure is covered outside the bearing 3 and installed on an inner wall 21 of the housing 2, and the rotating shaft 4 passes through a through hole 11 on the sealing cover 1 and is connected with the bearing 3.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A coal feeder bearing seal structure characterized by comprising:

the sealing cover is used for covering the outside of a bearing on a shell of the coal feeder and is arranged on the inner wall of the shell, and a through hole for the rotating shaft of the coal feeder to pass through is formed in the sealing cover so that the rotating shaft can extend into the sealing cover and is connected with the bearing;

and the cleaning assembly is positioned outside the sealing cover and is arranged close to the through hole, and the cleaning assembly is used for contacting with the peripheral surface of the rotating shaft so as to clean the pulverized coal on the rotating shaft.

2. The coal feeder bearing seal structure of claim 1, wherein the sweeping assembly includes a connecting member extending along the axis of the rotary shaft and detachably connected to an outer wall of the seal housing, and a sweeping member provided on a side of the connecting member near the rotary shaft, an end of the sweeping member remote from the connecting member being for contact with an outer peripheral surface of the rotary shaft.

3. The coal feeder bearing seal structure of claim 2, wherein one of the connector and the seal cap is formed with a latch, and the other of the connector and the seal cap is formed with a latch groove, the latch and the latch groove being engaged with each other.

4. The coal feeder bearing seal structure of claim 3, wherein the sweeping member is a scraper.

5. The coal feeder bearing seal structure of claim 4, wherein the scraper includes a scraper body connected to the connector and a rubber sleeve disposed at an end of the scraper body remote from the connector, the rubber sleeve being adapted to contact an outer circumferential surface of the rotary shaft.

6. The coal feeder bearing seal structure of any one of claims 1-5, wherein the sweeping assembly is plural in number, and the plural sweeping assemblies are spaced circumferentially along the rotary shaft.

7. The coal feeder bearing seal structure of any one of claims 1 to 5, wherein an end of the seal housing opposite the through bore is formed as an open end, the bearing being located within the open end and the open end being for connection with an inner wall of the housing, a seal being provided at the open end for sealing a gap between the seal housing and the inner wall of the housing.

8. The coal feeder bearing seal structure of any one of claims 1-5, further comprising a blow duct having an air outlet in communication with an interior of the seal housing, an air inlet for the blow duct being in communication with an air supply assembly.

9. The coal feeder bearing seal structure of any one of claims 1 to 5, wherein the seal cap defines an oil filler opening for a lubricant filling device to pass through to fill the bearing with lubricant, and a sealing plug is removably mounted at the oil filler opening.

10. A coal feeder comprising a housing, a coal feeder body mounted in the housing, a bearing mounted on the housing, and the coal feeder bearing seal structure of any of claims 1-9, the coal feeder body having a rotating shaft, the seal housing of the coal feeder bearing seal structure being housed outside the bearing and mounted to an inner wall of the housing, the rotating shaft passing through a through hole in the seal housing and being connected to the bearing.

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