CN114263744A - Sealing structure suitable for slag water complex environment - Google Patents
Sealing structure suitable for slag water complex environment Download PDFInfo
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- CN114263744A CN114263744A CN202111558220.2A CN202111558220A CN114263744A CN 114263744 A CN114263744 A CN 114263744A CN 202111558220 A CN202111558220 A CN 202111558220A CN 114263744 A CN114263744 A CN 114263744A
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- 238000007789 sealing Methods 0.000 title claims abstract description 151
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 239000002893 slag Substances 0.000 title claims description 29
- 239000013049 sediment Substances 0.000 claims abstract description 15
- 239000010687 lubricating oil Substances 0.000 claims abstract description 14
- 239000003921 oil Substances 0.000 claims description 8
- 229920000459 Nitrile rubber Polymers 0.000 claims description 5
- 230000006378 damage Effects 0.000 abstract description 8
- 239000008187 granular material Substances 0.000 abstract description 7
- 230000006837 decompression Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Sealing Of Bearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The sealing structure comprises a shell, a shaft and an inner guide wheel, wherein the inner guide wheel is fixedly sleeved at the left end of the shaft, the right end of the shaft penetrates into the shell, a water sealing cavity, a gas sealing cavity and a lubricating oil cavity are sequentially arranged between the shaft and the shell from left to right, a bearing is arranged in the lubricating oil cavity, the shaft is in running fit with the shell through the bearing, the water pressure in the water sealing cavity is 0.45MPa, and the air pressure in the gas sealing cavity is 0.02-0.05 MPa higher than that in the water sealing cavity. The bearing between mode protection axle and the casing through water seal structure air-entrapping structure, even the sealed skeleton of water seal structure damages, because still be equipped with one air-entrapping structure in the middle of bearing and the water seal structure, the pressure of air-entrapping structure is higher than the pressure of water seal structure, plays the secondary and keeps apart to in time maintain when great decompression state appears through the water seal structure, thereby get into the sediment water in avoiding the bearing, effectively avoid the bearing to be damaged by the granule in the sediment water.
Description
Technical Field
The invention relates to a slag dragging machine, in particular to a sealing structure suitable for a slag water complex environment.
Background
In chemical production or petrochemical industry, a slag conveyor is used as a key device in a slag discharge system, and the operation quality of the slag conveyor is related to the normal operation of the slag discharge system.
The original design of the guide wheel in the slag extractor is that a water seal is added between a bearing and a chain wheel, the two sides of sealing water are sealed with a sealing framework of a shaft, the inner guide wheel is poor in operation environment, the shaft is soaked in slag water for a long time, the shaft is rusted and sealed aging causes water seal leakage, the water leaks to a bearing cavity to cause deterioration of oil, the bearing is finally damaged, the inner guide wheel is clamped, and the abrasion of the chain to the inner guide wheel can be aggravated after the clamping is dead. During the operation of the system, the replacement and maintenance of the inner guide wheel need to be stopped to empty the slag water in the system, and the stable operation of the whole device is seriously influenced.
Therefore, the transformation of the sealing mode of the guide wheel in the slag remover is needed to ensure the long-period stable operation of the guide wheel in severe environments such as slag-water mixing and the like.
Disclosure of Invention
Aiming at the requirements in the prior art, the invention provides a sealing structure suitable for a slag water complex environment.
The utility model provides a seal structure suitable for under sediment water complex environment, includes casing, axle and interior guide pulley, the solid cover of interior guide pulley is in the left end tip of axle, the right-hand member tip of axle penetrates in the casing axle and casing have set gradually water-stop chamber, airtight chamber and lubricating oil chamber from a left side to the right side between axle and the casing be provided with the bearing in the lubricating oil chamber, the axle passes through the bearing with casing normal running fit, the water pressure in the water-stop chamber is 0.35MPa ~ 0.55MPa, airtight intracavity pressure is higher than water-stop intracavity hydraulic pressure range is 0.02MPa ~0.05 MPa.
Further: the casing with set up interference fit between the axle has sealed skeleton, two sealed skeleton, casing with form between the axle four water-tight chamber or airtight chamber.
Further: the sealing framework is made of nitrile rubber, and the nitrile rubber has the characteristics of high temperature resistance, wear resistance and corrosion resistance.
Further: the middle part of the shaft is sleeved with a sealing sleeve, the outer diameter of the left end part of the sealing sleeve is larger than that of the right end part of the sealing sleeve, the right end part of the sealing sleeve is sleeved in the shell and is in interference fit with the shell, the left end part of the sealing sleeve is attached to the left end face of the shell and is fixedly connected with the left end face of the shell through screws, a first sealing framework is in interference fit between the shaft and the shell, a water sealing cavity is formed between the two first sealing frameworks, the sealing sleeve and the shaft, and a water inlet channel communicated with the water sealing cavity is formed in the side wall of the sealing sleeve; the shaft and the shell are in interference fit with each other and are provided with second sealing frameworks, the shell and the shaft form the air sealing cavity, the shell is provided with an air inlet channel communicated with the air sealing cavity, and the shell is provided with an oil inlet channel communicated with the lubricating oil cavity.
For realizing the pressurize and the steady voltage of airtight seal chamber, prevent that the atmospheric pressure in the airtight seal chamber is less than the water pressure in watertight seal chamber after, water pours into airtight seal chamber, and is further: the middle part of the shaft is sleeved with a sealing sleeve, the outer diameter of the left end part of the sealing sleeve, the outer diameter of the middle part of the sealing sleeve and the outer diameter of the right end part of the sealing sleeve are sequentially reduced in a stepped manner, the middle part and the right end part of the sealing sleeve are sleeved in the shell, the middle part of the sealing sleeve is in interference fit with the shell, the left end part of the sealing sleeve is attached to the left end face of the shell and fixedly connected with the left end face of the shell through screws, a first sealing framework is in interference fit between the shaft and the shell, a water sealing cavity is formed between the two first sealing frameworks, the sealing sleeve and the shaft, and a water inlet channel communicated with the water sealing cavity is formed in the side wall of the sealing sleeve; the shaft is provided with a first sealing framework, the first sealing framework is in interference fit with the casing, the first sealing framework is in interference fit with the second sealing framework, the first sealing framework is in interference fit with the casing, the second sealing framework is in interference fit with the casing, the first sealing framework is in interference fit with the casing, the second sealing framework is in interference fit with the casing, the casing is in interference fit with the casing, an annular gap pressure maintaining belt is formed between the casing and the right end part of the sealing sleeve, an air inlet channel communicated with the annular gap pressure maintaining belt is formed in the position, corresponding to the right end part of the sealing sleeve, on the casing, an air inlet channel communicated with the annular gap pressure maintaining belt is formed in the position, on the casing, corresponding to the right end part of the sealing sleeve, and an oil inlet channel communicated with the lubricating oil cavity is formed in the casing.
Further: the thickness of the annular gap pressure maintaining belt in the radial direction of the sealing sleeve is 0.5 mm-2 mm, and the length of the annular gap pressure maintaining belt in the axial direction of the sealing sleeve is 20 mm-30 mm.
Further: the right side cover of axle is equipped with sealed lid, sealed lid with casing is fixed and sealing connection.
The invention has the beneficial effects that: the bearing between mode protection axle and the casing through water seal structure air-entrapping structure, even the sealed skeleton of water seal structure damages, because still be equipped with one air-entrapping structure in the middle of bearing and the water seal structure, the pressure of air-entrapping structure is higher than the pressure of water seal structure, plays the secondary and keeps apart to in time maintain when great decompression state appears through the water seal structure, thereby get into the sediment water in avoiding the bearing, effectively avoid the bearing to be damaged by the granule in the sediment water.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a third embodiment of the present invention.
In the figure, 1, an inner guide wheel; 2. a shaft; 3. a housing; 31. an air intake passage; 32. an oil inlet channel; 4. a bearing; 5. a sealing cover; 6. sealing the sleeve; 61. a water inlet channel; 71. a water sealing cavity; 72. a hermetic seal chamber; 73. a lubricating oil cavity; 8. sealing the framework; 81. a first seal frame; 82. a second sealing skeleton; 9. an annular gap holding belt.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention. The terms of orientation such as left, center, right, up, down, etc. in the examples of the present invention are only relative to each other or are referred to the normal use state of the product, and should not be considered as limiting.
The first embodiment:
the utility model provides a seal structure suitable for under sediment water complex environment, as shown in figure 1, includes casing, axle and interior guide pulley 1, the solid cover of interior guide pulley 1 is in the left end tip of axle 2, the right-hand member tip of axle 2 penetrates in the casing 3 axle 2 and casing 3 have set gradually water-tight chamber 71, airtight chamber 72 and lubricating oil chamber 73 from a left side to the right side in the lubricating oil chamber 73 is provided with bearing 4, axle 2 passes through bearing 4 with casing 3 normal running fit, the water pressure in the water-tight chamber 71 is 0.35MPa ~ 0.55MPa, the internal pressure of airtight chamber 72 is higher than the pressure range of water pressure in water-tight chamber 71 is 0.02MPa ~0.05 MPa. A sealing framework 8 is arranged between the shell 73 and the shaft 2 in an interference fit mode, and a water sealing cavity 71 or a gas sealing cavity 72 is formed between the two sealing frameworks 8, the shell 3 and the shaft 2. The sealing framework 8 is made of nitrile rubber, and the nitrile rubber has the characteristics of high temperature resistance, wear resistance and corrosion resistance.
The working principle of the invention is as follows: the slag remover is arranged at the lower part of the slag remover and is sunk into slag water, then an inner ring of a chain plate in the slag remover is meshed with an inner guide wheel, a driving motor in the slag remover drives the chain plate to rotate, and the inner guide wheel and a shaft follow the chain plate to be driven, so that sundries in the slag water are brought into the slag water by a scraper arranged on an outer ring of the chain plate.
Second embodiment:
other technical features are that under the same condition as the first embodiment, as shown in fig. 2, a sealing sleeve 6 is sleeved on the middle of the shaft 2, the outer diameter of the left end of the sealing sleeve 6 is larger than the outer diameter of the right end of the sealing sleeve 6, the right end of the sealing sleeve 6 is sleeved in the housing 3 and is in interference fit with the housing 3, the left end of the sealing sleeve 6 is attached to the left end of the housing 3 and is fixedly connected with the left end of the housing 3 through screws, a first sealing framework 81 is in interference fit between the shaft 2 and the housing 3, a water sealing cavity 71 is formed between the two first sealing frameworks 81, the sealing sleeve 6 and the shaft 2, and a water inlet channel 61 communicated with the water sealing cavity 71 is formed on the side wall of the sealing sleeve 6; a second sealing framework 82 is in interference fit between the shaft 2 and the shell 3, the two second sealing frameworks 82, the shell 3 and the shaft 2 form the air sealing cavity 72, an air inlet channel 31 communicated with the air sealing cavity 72 is formed in the shell 3, and an oil inlet channel 32 communicated with the lubricating oil cavity 73 is formed in the shell 3. The right side of the shaft 2 is covered with a sealing cover 5, and the sealing cover 5 is fixedly and hermetically connected with the shell 3.
The sealing water adopted at present only can not enter, the sealing water enters the water sealing cavity 71 through the water inlet channel 6, and the pressure is controlled to be 0.45 MPa. The air-tight sealing cavity is not provided with a loop, so that the air pressure in the air-tight sealing cavity is kept to be higher than the water pressure in the water-tight sealing cavity 71 by 0.02-0.05 MPa all the time. When the water sealing cavity leaks, the added air sealing cavity can play a role in secondary isolation, and the water sealing cavity is timely maintained under the condition of large pressure loss of the water sealing cavity, so that slag water particles are effectively prevented from entering the bearing and damaging the bearing.
Compared with the prior art:
if adopt one water seal structure alone, because of operational environment reason, interior guide pulley side seal is the operation in the sediment water, and tiny sediment granule wearing and tearing seal skeleton and axle, long-time wearing and tearing can lead to sealed skeleton to destroy, and sealed skeleton damages the back sediment water granule and can get into the sealed intracavity of water seal and destroy the sealing that is close to the bearing side, and the bearing side seals the back of damaging, and the part sediment water granule in the water seal intracavity can get into the bearing box and damage the bearing.
If adopt one independent atmoseal structure, change former sealed water source into the air supply, the dead condition of card will appear in the bearing about generally operating 3 months, open the bearing back shroud and discover to have the sediment water in the bearing box, through the damage form that the detection finds sealed skeleton damage form is the same with former atmoseal structure, one independent atmoseal structure can not thoroughly keep apart the sediment water, after long-time operation, the sealed skeleton of inner guide wheel side destroys, can store up a large amount of sediment granules between sealed skeleton and the axle, part sediment granule can be blown the sealed skeleton of bearing side of the other end by the gas in the atmoseal structure, and then suffer destruction, and lead to the bearing card to die in getting into the bearing.
The bearing can be better protected by combining the water seal structure and the air seal structure, and even if a seal framework of the water seal structure is damaged, because the air seal structure is additionally arranged between the bearing and the water seal structure, the pressure in the air seal structure is higher than that in the water seal structure, secondary isolation is performed, and slag water particles are prevented from entering a bearing cavity to damage the bearing; the water seal cavity is timely maintained under the condition of large pressure loss of the water seal cavity, so that the combination mode of the water seal structure and the air seal structure can effectively avoid that slag water particles cannot enter the inside of the bearing.
The third embodiment:
other technical characteristics are that under the same condition as the second embodiment, in order to realize pressure maintaining and stabilizing of the airtight chamber and prevent water from entering the airtight chamber after the air pressure in the airtight chamber is smaller than the water pressure of the water seal chamber, as shown in fig. 3, a seal sleeve 6 is sleeved on the middle portion of the shaft 2, the outer diameter of the left end portion of the seal sleeve 6, the outer diameter of the middle portion of the seal sleeve and the outer diameter of the right end portion of the seal sleeve are sequentially reduced in a stepped manner, the middle portion and the right end portion of the seal sleeve 6 are sleeved in the housing 3, the middle portion of the seal sleeve 6 is in interference fit with the housing 3, the left end portion of the seal sleeve 6 is attached to the left end face of the housing 3 and fixedly connected by screws, a first seal frame 81 is in interference fit between the shaft 2 and the housing 3, and the water seal chamber 71 is formed between the two first seal frames 81, the seal sleeve 6 and the shaft 2, a water inlet channel 61 communicated with the water sealing cavity 71 is formed in the side wall of the sealing sleeve 6; interference fit has second sealed skeleton 82, one between axle 2 and the casing 3 first sealed skeleton 81, one second sealed skeleton 82, sealing sleeve 6, casing 3 and form between the five of axle 2 airtight seal chamber 72 casing 3 with form annular gap pressure strip 9 between the right-hand member tip of sealing sleeve 6 correspond on the casing 3 the position of sealing sleeve 6 right-hand member tip seted up with the inlet channel 31 that annular gap pressure strip 9 is linked together set up on the casing 3 with the oil feed passageway 32 that lubricating oil chamber 73 is linked together. The thickness of the annular gap pressure maintaining belt 9 in the radial direction of the sealing sleeve 6 is 0.5 mm-2 mm, and the length of the annular gap pressure maintaining belt 9 in the axial direction of the sealing sleeve 6 is 20 mm-30 mm.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a seal structure suitable for under sediment water complex environment which characterized in that: the bearing is arranged in the lubricating oil cavity, the shaft passes through the bearing and is in running fit with the shell, the water pressure in the water sealing cavity is 0.35 MPa-0.55 MPa, and the pressure range of the air pressure in the air sealing cavity, which is higher than the water pressure in the water sealing cavity, is 0.02 MPa-0.05 MPa.
2. The sealing structure suitable for the slag water complex environment according to claim 1, wherein: the casing with set up interference fit between the axle has sealed skeleton, two sealed skeleton, casing with form between the axle four water-tight chamber or airtight chamber.
3. The sealing structure suitable for the slag water complex environment according to claim 2, wherein: the sealing framework is made of nitrile rubber.
4. The sealing structure suitable for the slag water complex environment according to claim 1, wherein: the middle part of the shaft is sleeved with a sealing sleeve, the outer diameter of the left end part of the sealing sleeve is larger than that of the right end part of the sealing sleeve, the right end part of the sealing sleeve is sleeved in the shell and is in interference fit with the shell, the left end part of the sealing sleeve is attached to the left end face of the shell and is fixedly connected with the left end face of the shell through screws, a first sealing framework is in interference fit between the shaft and the shell, a water sealing cavity is formed between the two first sealing frameworks, the sealing sleeve and the shaft, and a water inlet channel communicated with the water sealing cavity is formed in the side wall of the sealing sleeve; the shaft and the shell are in interference fit with each other and are provided with second sealing frameworks, the shell and the shaft form the air sealing cavity, the shell is provided with an air inlet channel communicated with the air sealing cavity, and the shell is provided with an oil inlet channel communicated with the lubricating oil cavity.
5. The sealing structure suitable for the slag water complex environment according to claim 1, wherein: the middle part of the shaft is sleeved with a sealing sleeve, the outer diameter of the left end part of the sealing sleeve, the outer diameter of the middle part of the sealing sleeve and the outer diameter of the right end part of the sealing sleeve are sequentially reduced in a stepped manner, the middle part and the right end part of the sealing sleeve are sleeved in the shell, the middle part of the sealing sleeve is in interference fit with the shell, the left end part of the sealing sleeve is attached to the left end face of the shell and fixedly connected with the left end face of the shell through screws, a first sealing framework is in interference fit between the shaft and the shell, a water sealing cavity is formed between the two first sealing frameworks, the sealing sleeve and the shaft, and a water inlet channel communicated with the water sealing cavity is formed in the side wall of the sealing sleeve; the shaft is provided with a first sealing framework, the first sealing framework is in interference fit with the casing, the first sealing framework is in interference fit with the second sealing framework, the first sealing framework is in interference fit with the casing, the second sealing framework is in interference fit with the casing, the first sealing framework is in interference fit with the casing, the second sealing framework is in interference fit with the casing, the casing is in interference fit with the casing, an annular gap pressure maintaining belt is formed between the casing and the right end part of the sealing sleeve, an air inlet channel communicated with the annular gap pressure maintaining belt is formed in the position, corresponding to the right end part of the sealing sleeve, on the casing, an air inlet channel communicated with the annular gap pressure maintaining belt is formed in the position, on the casing, corresponding to the right end part of the sealing sleeve, and an oil inlet channel communicated with the lubricating oil cavity is formed in the casing.
6. The sealing structure suitable for the slag water complex environment according to claim 5, wherein: the thickness of the annular gap pressure maintaining belt in the radial direction of the sealing sleeve is 0.5 mm-2 mm, and the length of the annular gap pressure maintaining belt in the axial direction of the sealing sleeve is 20 mm-30 mm.
7. The sealing structure suitable for the slag water complex environment according to claim 1, wherein: the right side cover of axle is equipped with sealed lid, sealed lid with casing is fixed and sealing connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111558220.2A CN114263744B (en) | 2021-12-20 | 2021-12-20 | Sealing structure suitable for under slag water complex environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111558220.2A CN114263744B (en) | 2021-12-20 | 2021-12-20 | Sealing structure suitable for under slag water complex environment |
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| Publication Number | Publication Date |
|---|---|
| CN114263744A true CN114263744A (en) | 2022-04-01 |
| CN114263744B CN114263744B (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111558220.2A Active CN114263744B (en) | 2021-12-20 | 2021-12-20 | Sealing structure suitable for under slag water complex environment |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2111929U (en) * | 1991-11-23 | 1992-08-05 | 江苏省东台船用配件厂 | Water lubrication trailing axle sealing device |
| CN201436476U (en) * | 2009-06-20 | 2010-04-07 | 青岛达能环保设备有限公司 | External diversion type internal guide pulley mechanism for water sealing bearing |
| JP2011220465A (en) * | 2010-04-12 | 2011-11-04 | Kemel Co Ltd | Shaft seal device |
| CN204921880U (en) * | 2015-08-07 | 2015-12-30 | 大唐略阳发电有限责任公司 | Guide pulley combination bearing in external dragveyer |
| CN205037323U (en) * | 2015-04-27 | 2016-02-17 | 青岛正大正电力环保设备有限公司 | Dragveyer is with interior guide pulley of heavy load |
| CN205956384U (en) * | 2016-08-22 | 2017-02-15 | 东台船用配件有限公司 | Ship stern axle air formula oil lubrication sealing device |
| CN206410150U (en) * | 2017-01-16 | 2017-08-15 | 青岛达能环保设备股份有限公司 | Submerged slag conveyor external bearings Mechanical Sealed Type inner guide pulley device |
| CN208221363U (en) * | 2018-04-04 | 2018-12-11 | 青岛海洲电力设备有限公司 | Intelligent submerged slag conveyor inner guide pulley |
| CN212838980U (en) * | 2020-08-07 | 2021-03-30 | 新能凤凰（滕州）能源有限公司 | External slag extractor inner guide wheel with sealed structure and bearing |
-
2021
- 2021-12-20 CN CN202111558220.2A patent/CN114263744B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2111929U (en) * | 1991-11-23 | 1992-08-05 | 江苏省东台船用配件厂 | Water lubrication trailing axle sealing device |
| CN201436476U (en) * | 2009-06-20 | 2010-04-07 | 青岛达能环保设备有限公司 | External diversion type internal guide pulley mechanism for water sealing bearing |
| JP2011220465A (en) * | 2010-04-12 | 2011-11-04 | Kemel Co Ltd | Shaft seal device |
| CN205037323U (en) * | 2015-04-27 | 2016-02-17 | 青岛正大正电力环保设备有限公司 | Dragveyer is with interior guide pulley of heavy load |
| CN204921880U (en) * | 2015-08-07 | 2015-12-30 | 大唐略阳发电有限责任公司 | Guide pulley combination bearing in external dragveyer |
| CN205956384U (en) * | 2016-08-22 | 2017-02-15 | 东台船用配件有限公司 | Ship stern axle air formula oil lubrication sealing device |
| CN206410150U (en) * | 2017-01-16 | 2017-08-15 | 青岛达能环保设备股份有限公司 | Submerged slag conveyor external bearings Mechanical Sealed Type inner guide pulley device |
| CN208221363U (en) * | 2018-04-04 | 2018-12-11 | 青岛海洲电力设备有限公司 | Intelligent submerged slag conveyor inner guide pulley |
| CN212838980U (en) * | 2020-08-07 | 2021-03-30 | 新能凤凰（滕州）能源有限公司 | External slag extractor inner guide wheel with sealed structure and bearing |
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| CN114263744B (en) | 2024-04-12 |
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