CN112032303A - Coal pulverizer lower frame body seal structure - Google Patents
Coal pulverizer lower frame body seal structure Download PDFInfo
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- CN112032303A CN112032303A CN202010804383.3A CN202010804383A CN112032303A CN 112032303 A CN112032303 A CN 112032303A CN 202010804383 A CN202010804383 A CN 202010804383A CN 112032303 A CN112032303 A CN 112032303A
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- coal
- frame body
- vacuum pump
- lower frame
- sealing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a sealing structure of a lower frame body of a coal mill, relates to the technical field of coal mills, and aims to solve the problem that the sealing effect is reduced due to the fact that a gap is formed in a thermal expansion sealing structure of the existing sealing structure of the lower frame body of the coal mill. Lower extreme four corners of lower carriage shell all is provided with hydraulic shock absorber, and hydraulic shock absorber and lower carriage shell bolted connection, one side of lower carriage shell is provided with vacuum pump support, and vacuum pump support and lower carriage shell welded connection, vacuum pump support's upper end is provided with the vacuum pump, and vacuum pump support bolted connection, and vacuum pump and lower carriage shell flange joint, the upper end of lower carriage shell is provided with the sealing washer, and sealing washer and lower carriage shell bolted connection, the center upper end of sealing washer is provided with the thermal expansion support frame, and thermal expansion support frame and sealing washer welded connection.
Description
Technical Field
The invention relates to the technical field of coal mills, in particular to a sealing structure of a lower frame body of a coal mill.
Background
Coal mills are machines for breaking up and grinding coal briquettes into coal dust, which are important auxiliary equipment for coal dust furnaces. The grinding machine comprises a vertical type flour mill, a high-pressure suspension roller mill, a medium-speed micro-powder mill, an overpressure trapezoidal mill, a Raymond mill and the like. The coal grinding process is a process in which coal is crushed and its surface area is increased continuously. To increase the new surface area, the binding force between solid molecules must be overcome, and thus energy is consumed. The coal is ground into coal powder in a coal mill mainly by three modes of crushing, smashing and grinding. Wherein the energy consumed by the crushing process is the least. The two or three modes of the various coal mills are combined in the pulverizing process, but the main mode is determined by the type of the coal mill. The rotational speed of the coal grinding machine can be classified into three types, i.e., a low-speed coal mill, a medium-speed coal mill, and a high-speed coal mill. The coal mill is the key equipment for crushing the materials after the materials are crushed. The coal mill is widely applied to the production industries of cement, silicate products, novel building materials, refractory materials, chemical fertilizers, black and non-ferrous metal ore dressing, glass ceramics and the like.
However, the sealing structure of the lower frame body of the existing coal mill has the problem that the sealing effect is reduced because a gap is formed in the thermal expansion sealing structure; therefore, the existing requirements are not met, and a sealing structure of the lower frame body of the coal mill is provided for the sealing structure.
Disclosure of Invention
The invention aims to provide a sealing structure of a lower frame body of a coal mill, which aims to solve the problem that the sealing effect is reduced due to the fact that a gap is formed in a thermal expansion sealing structure in the existing sealing structure of the lower frame body of the coal mill in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a sealing structure of a lower frame body of a coal mill comprises a lower frame body shell, wherein hydraulic shock absorbers are arranged at four corners of the lower end of the lower frame body shell, the hydraulic shock absorber is connected with the lower frame body shell through bolts, one side of the lower frame body shell is provided with a vacuum pump bracket, and the vacuum pump bracket is welded with the lower frame body shell, the upper end of the vacuum pump bracket is provided with a vacuum pump, the vacuum pump is connected with a vacuum pump bracket through a bolt, the vacuum pump is connected with a lower frame body shell through a flange, the upper end of the lower frame body shell is provided with a sealing ring, the sealing ring is connected with the lower frame body shell through a bolt, the upper end of the center of the sealing ring is provided with a thermal expansion supporting frame, the thermal expansion support frame is welded with the sealing ring, the upper end of the thermal expansion support frame is provided with a fixing ring, the fixing ring is welded with the thermal expansion support frame, and the upper end of the sealing ring is provided with a coal mill upper frame, and the coal mill upper frame is connected with the sealing ring through a bolt.
Preferably, the outside of sealing washer is provided with interior closing plate, and interior closing plate and sealing washer integrated into one piece set up, the outside of interior closing plate is provided with outer closing plate, and outer closing plate and sealing washer integrated into one piece set up, the inner wall lower extreme of interior closing plate is provided with inlayer processing circle, and inlayer processing circle and sealing washer gluing are connected.
Preferably, the outer walls of the upper end and the lower end of the inner sealing plate are provided with low-density sealing glue, and the low-density sealing glue is connected with the inner sealing plate in an adhesive manner.
Preferably, the outer side of the outer sealing plate is provided with a leakage-proof outer plate, the leakage-proof outer plate and the outer sealing plate are integrally formed, outer sealing plate fixing bolts are arranged at the upper end and the lower end of the outer sealing plate, and the outer sealing plate fixing bolts penetrate through the coal mill upper frame, the outer sealing plate and the lower frame body shell and are in threaded connection.
Preferably, the inner wall of the inner sealing plate is provided with a pulverized coal groove hole, the pulverized coal groove hole and the inner sealing plate are integrally formed, the pulverized coal groove holes are eight in number, each pulverized coal groove hole is formed at the lower end of each pulverized coal groove hole, and the pulverized coal grooves and the inner sealing plate are integrally formed.
Preferably, be provided with the breakage-proof coal breakage fretwork on the thermal energy support frame, and the breakage-proof coal breakage fretwork sets up with thermal energy support frame integrated into one piece, and the breakage-proof coal breakage fretwork is provided with eight.
Preferably, the upper end of the inner layer processing ring is provided with a powder leakage groove, the powder leakage groove and the inner layer processing ring are integrally formed, the powder leakage groove is provided with eight powder leakage holes, and the powder leakage holes and the inner layer processing ring are integrally formed.
Preferably, the output end of the vacuum pump is provided with a vacuum pump dustproof pipe, and the vacuum pump dustproof pipe is connected with a vacuum pump flange.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention supports the inner sealing plate and the outer sealing plate through the arrangement of the sealing ring, the inner sealing plate and the outer sealing plate, the groove formed between the inner sealing plate and the outer sealing plate can be used for installing a lower frame shell and an upper frame of a coal mill for connecting the two shells through a clamping groove, after the connection is successful, the upper frame of the coal mill, the outer sealing plate and the lower frame shell can be connected together by using the outer sealing plate fixing bolt, at the moment, the installation work of the sealing ring can be completed, the installation step of the sealing structure is greatly simplified, the installation difficulty is reduced, the later maintenance is easier, the low-density sealant at one side of the inner sealing plate can be heated and expanded under the high-temperature environment in a grinding chamber, the gap at the upper sealing part is extruded, the coal powder permeation is reduced, the condition that the sealing structure has loosening and powder leakage caused by the expansion of a workpiece due to heating is, the working stability of the coal mill is improved.
2. Through the arrangement of the thermal expansion support frame and the hollow-out for preventing the broken coal from falling, when the temperature of the internal work of the coal mill rises, the thermal expansion support frame deforms due to thermal expansion, thereby expanding to the outside, the thermal expansion support frame extrudes the inner sealing plate at the moment, the gap between the inner sealing plate and the upper frame of the coal mill is reduced, the sealing performance of the lower frame body under the high-temperature environment is further improved, and the thermal expansion support frame is cooled and restored to the original state after the temperature is reduced, thereby realizing the functions of easily replacing and maintaining the interior of the coal mill after shutdown and temperature reduction, the anti-cracking coal drop hollow is used for preventing the thermal expansion support frame from cracking due to internal extrusion when the thermal expansion support frame is subjected to thermal deformation, providing space for the thermal expansion support frame to deform due to expansion, the thermal expansion support frame can be safer to use, and meanwhile, the pulverized coal can penetrate through the anti-cracking coal breakage hollow hole, so that the pulverized coal is prevented from being accumulated on the thermal expansion support frame to influence the working efficiency of the coal mill.
3. Through the setting of buggy recess hole, buggy recess, leak whitewashed groove, leak whitewashed hole, buggy recess, leak whitewashed groove, leak whitewashed hole are all in order to prevent that the buggy from piling up for the buggy can smooth landing back grind indoor grinding, prevent that the buggy granule from piling up too much and blockking up seal structure, improve seal structure's leakproofness and improve the grinding efficiency of coal pulverizer simultaneously, reduce the condition emergence of the extravagant high pollution of resource.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the seal ring structure of the present invention;
FIG. 3 is an enlarged partial view of the inner seal plate of the present invention;
FIG. 4 is a schematic top view of the thermal expansion support of the present invention;
FIG. 5 is an enlarged view of a portion of the present invention at A;
in the figure: 1. a lower chassis housing; 2. a hydraulic shock absorber; 3. a vacuum pump bracket; 4. a vacuum pump; 5. a seal ring; 6. a thermally expanding support frame; 7. a fixing ring; 8. putting the coal mill on a frame; 9. an inner seal plate; 10. an outer seal plate; 11. processing the inner layer into a ring; 12. the anti-cracking coal breakage is hollowed; 13. a low density sealant; 14. the outer sealing plate fixing bolt; 15. a leakage-proof outer plate; 16. a pulverized coal groove; 17. a powder leakage groove; 18. a powder leakage hole; 19. coal dust groove holes; 20. and a vacuum pump dustproof pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, an embodiment of the present invention is shown: a sealing structure of a lower frame body of a coal mill comprises a lower frame body shell 1, hydraulic shock absorbers 2 are arranged at four corners of the lower end of the lower frame body shell 1, the hydraulic shock absorbers 2 are connected with the lower frame body shell 1 through bolts, a vacuum pump support 3 is arranged at one side of the lower frame body shell 1, the vacuum pump support 3 is connected with the lower frame body shell 1 through welding, a vacuum pump 4 is arranged at the upper end of the vacuum pump support 3, the vacuum pump 4 is connected with the vacuum pump support 3 through bolts, the vacuum pump 4 is connected with the lower frame body shell 1 through flanges, a sealing ring 5 is arranged at the upper end of the lower frame body shell 1, the sealing ring 5 is connected with the lower frame body shell 1 through bolts, a thermal expansion support frame 6 is arranged at the upper center end of the sealing ring 5, the thermal expansion support frame 6 is connected with the sealing ring 5 through welding, a fixing ring 7 is arranged at the upper end of the, and the coal mill upper frame 8 is connected with the sealing ring 5 through bolts.
Further, the outside of sealing washer 5 is provided with interior closing plate 9, and interior closing plate 9 sets up with sealing washer 5 integrated into one piece, the outside of interior closing plate 9 is provided with outer closing plate 10, and outer closing plate 10 sets up with sealing washer 5 integrated into one piece, the inner wall lower extreme of interior closing plate 9 is provided with inlayer processing circle 11, and inlayer processing circle 11 is connected with sealing washer 5 gluing, sealing washer 5 supports interior closing plate 9 and outer closing plate 10, and the groove that forms between interior closing plate 9 and the outer closing plate 10 can be used for installing lower carriage shell 1 and coal pulverizer upper carriage 8 and be used for the draw-in groove to connect two shells, an interior external environment for the coal pulverizer keeps apart, thereby prevent that inside buggy from blockking up the junction and improve leakproofness and safety in utilization.
Further, the upper and lower both ends outer wall of interior closing plate 9 all is provided with sealed 13 of low density, and sealed 13 of low density is connected with interior closing plate 9 gluing, but sealed 13 of low density of interior closing plate 9 one side is the thermal expansion under the high temperature environment in the grinding room, with the gap extrusion of upper seal department, the buggy infiltration has been reduced, greatly reduced because the work piece is heated the inflation, cause seal structure to appear the gap and cause the condition that not hard up hourglass powder, practice thrift the maintenance cost and reduced the wasting of resources, the stability of coal pulverizer work has been improved.
Further, the outside of external seal board 10 is provided with prevents leaking planking 15, and prevent leaking planking 15 and external seal board 10 integrated into one piece setting, the upper and lower both ends of external seal board 10 all are provided with external seal board fixing bolt 14, and external seal board fixing bolt 14 runs through coal pulverizer upper bracket 8, external seal board 10, lower carriage shell 1 threaded connection, the groove that forms between internal seal board 9 and the external seal board 10 can be used for installing lower carriage shell 1 and coal pulverizer upper bracket 8 and be used for the draw-in groove to connect two shells, and can use external seal board fixing bolt 14 to put on the coal pulverizer upper bracket 8 after successfully connecting, external seal board 10, lower carriage shell 1 links together, can accomplish the installation work of sealing washer 5 this moment, the installation of seal structure has greatly been simplified, reduce the installation degree of difficulty, make the later maintenance lighter.
Further, the inner wall of the inner sealing plate 9 is provided with pulverized coal groove holes 19, the pulverized coal groove holes 19 and the inner sealing plate 9 are integrally formed, the pulverized coal groove holes 19 are eight, each pulverized coal groove hole 19 is provided with a pulverized coal groove 16 at the lower end, the pulverized coal grooves 16 and the inner sealing plate 9 are integrally formed, and flying pulverized coal falls into the pulverized coal groove holes 19 and can slide downwards along the pulverized coal grooves 16, so that pulverized coal accumulation is prevented from affecting stability and sealing performance of the sealing structure.
Furthermore, the thermal expansion support frame 6 is provided with eight anti-fracture coal breakage hollows 12, the anti-fracture coal breakage hollows 12 and the thermal expansion support frame 6 are integrally formed, when the temperature of the internal work of the coal mill rises, the thermal expansion support frame 6 expands due to thermal expansion, at the moment, the thermal expansion support frame 6 extrudes the inner sealing plate 9, the gap between the inner sealing plate 9 and the upper frame 8 of the coal mill is reduced, the lower frame body sealing performance under the high-temperature environment is further improved, the thermal expansion support frame 6 is cooled and restored to the original state after the temperature is reduced, the internal functions of the coal mill can be easily replaced and maintained after shutdown and temperature reduction can be realized, the anti-fracture coal breakage hollows 12 provide a space for the expansion deformation of the thermal expansion support frame 6 in order to prevent the internal extrusion fracture of the thermal expansion support frame 6 when the thermal expansion deformation occurs, the thermal expansion support frame 6 can be used more safely, and meanwhile, the pulverized coal can penetrate through the anti-cracking coal breakage hollow 12, so that the pulverized coal is prevented from being accumulated on the thermal expansion support frame 6 to influence the working efficiency of the coal mill.
Further, the upper end of inlayer processing circle 11 is provided with leaks whitewashed groove 17, and leak whitewashed groove 17 and the setting of inlayer processing circle 11 integrated into one piece, it is provided with hourglass powder hole 18 on the groove 17 to leak whitewashed, it is provided with eight to leak whitewashed hole 18, and leak whitewashed hole 18 and the setting of inlayer processing circle 11 integrated into one piece, prevent that the buggy from piling up, make the buggy can smooth landing return grind indoor grinding, prevent that the buggy granule from piling up too much and blockking up seal structure, the leakproofness that improves seal structure improves the coal pulverizer simultaneously, the condition that reduces the wasting of resources high pollution takes place.
Further, the output of vacuum pump 4 is provided with vacuum pump dustproof pipe 20, and vacuum pump dustproof pipe 20 and 4 flange joint of vacuum pump, and vacuum pump 4 is used for absorbing the inside air of coal pulverizer, prevents to appear the condition of buggy burning among the grinding process, improves and grinds security and stability for the product is more reliable.
The working principle is as follows: when the sealing structure is used, the sealing ring 5 supports the inner sealing plate 9 and the outer sealing plate 10, a groove formed between the inner sealing plate 9 and the outer sealing plate 10 can be used for installing the lower frame body shell 1 and the coal mill upper frame 8 for connecting the two shells through a clamping groove, after the connection is successful, the coal mill upper frame 8, the outer sealing plate 10 and the lower frame body shell 1 can be connected together through the outer sealing plate fixing bolt 14, at the moment, the installation work of the sealing ring 5 can be completed, the installation steps of the sealing structure are greatly simplified, the installation difficulty is reduced, the later maintenance is easier, the low-density sealing glue 13 on one side of the inner sealing plate 9 can be heated and expanded under the high-temperature environment in a grinding chamber, the gap at the upper sealing position is extruded, the coal powder permeation is reduced, the condition that the sealing structure is loosened and leaked due to the occurrence of the gap caused by the heating expansion of a workpiece is greatly, the working stability of the coal mill is improved, when the temperature of the internal work of the coal mill rises, the thermal expansion support frame 6 expands due to thermal expansion and deforms and expands outwards, at the moment, the thermal expansion support frame 6 extrudes the inner sealing plate 9, a gap between the inner sealing plate 9 and the upper frame 8 of the coal mill is reduced, the lower frame body sealing performance under a high-temperature environment is further improved, after the temperature is reduced, the thermal expansion support frame 6 is cooled and returns to the original state, the functions of easily replacing and maintaining the internal part of the coal mill after shutdown and cooling can be realized, the anti-cracking coal falling hollow 12 is used for preventing the thermal expansion support frame 6 from generating internal extrusion and cracking during thermal deformation, a space is provided for the expansion and deformation of the thermal expansion support frame 6, the coal powder can pass through the anti-cracking coal falling hollow 12 while the thermal expansion support frame 6 is used more safely, and the coal powder is prevented, the coal powder groove hole 19, the coal powder groove 16, the powder leakage groove 17 and the powder leakage hole 18 are all used for preventing coal powder from being accumulated, so that the coal powder can smoothly slide back to the grinding chamber for grinding, coal powder particles are prevented from being excessively accumulated to block a sealing structure, the sealing performance of the sealing structure is improved, the grinding efficiency of the coal mill is improved, and the condition of resource waste and high pollution is reduced.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The utility model provides a coal pulverizer lower carriage seal structure, includes lower carriage shell (1), its characterized in that: the lower end four corners of the lower frame body shell (1) are respectively provided with a hydraulic damper (2), the hydraulic dampers (2) are connected with the lower frame body shell (1) through bolts, one side of the lower frame body shell (1) is provided with a vacuum pump bracket (3), the vacuum pump bracket (3) is connected with the lower frame body shell (1) in a welded mode, the upper end of the vacuum pump bracket (3) is provided with a vacuum pump (4), the vacuum pump (4) is connected with the vacuum pump bracket (3) through bolts, the vacuum pump (4) is connected with the lower frame body shell (1) through flanges, the upper end of the lower frame body shell (1) is provided with a sealing ring (5), the sealing ring (5) is connected with the lower frame body shell (1) through bolts, the upper center of the sealing ring (5) is provided with a thermal expansion supporting frame (6), the thermal expansion supporting frame (6) is connected with the sealing ring (5) in a welded mode, and, and the fixing ring (7) is welded with the thermal expansion support frame (6), the upper end of the sealing ring (5) is provided with a coal mill upper frame (8), and the coal mill upper frame (8) is connected with the sealing ring (5) through a bolt.
2. The seal structure of the lower frame body of the coal mill as claimed in claim 1, wherein: the outside of sealing washer (5) is provided with interior closing plate (9), and interior closing plate (9) and sealing washer (5) integrated into one piece set up, the outside of interior closing plate (9) is provided with outer closing plate (10), and outer closing plate (10) and sealing washer (5) integrated into one piece set up, the inner wall lower extreme of interior closing plate (9) is provided with inlayer processing circle (11), and inlayer processing circle (11) and sealing washer (5) gluing are connected.
3. The seal structure of the lower frame body of the coal mill as claimed in claim 2, wherein: the outer walls of the upper end and the lower end of the inner sealing plate (9) are respectively provided with a low-density sealant (13), and the low-density sealant (13) is in adhesive connection with the inner sealing plate (9).
4. The seal structure of the lower frame body of the coal mill as claimed in claim 2, wherein: the coal mill sealing structure is characterized in that a leakage-proof outer plate (15) is arranged on the outer side of the outer sealing plate (10), the leakage-proof outer plate (15) and the outer sealing plate (10) are integrally formed, outer sealing plate fixing bolts (14) are arranged at the upper end and the lower end of the outer sealing plate (10), and the outer sealing plate fixing bolts (14) penetrate through the coal mill upper frame (8), the outer sealing plate (10) and the lower frame body shell (1) in threaded connection.
5. The seal structure of the lower frame body of the coal mill as claimed in claim 2, wherein: the inner wall of the inner sealing plate (9) is provided with pulverized coal groove holes (19), the pulverized coal groove holes (19) and the inner sealing plate (9) are integrally formed, the pulverized coal groove holes (19) are eight in number and are arranged at each of eight, every lower end of each pulverized coal groove hole (19) is provided with a pulverized coal groove (16), and the pulverized coal grooves (16) and the inner sealing plate (9) are integrally formed.
6. The seal structure of the lower frame body of the coal mill as claimed in claim 1, wherein: the thermal expansion support frame (6) is provided with anti-breakage coal breakage hollow parts (12), the anti-breakage coal breakage hollow parts (12) and the thermal expansion support frame (6) are integrally formed, and the number of the anti-breakage coal breakage hollow parts (12) is eight.
7. The seal structure of the lower frame body of the coal mill as claimed in claim 2, wherein: the upper end of the inner layer processing ring (11) is provided with a powder leakage groove (17), the powder leakage groove (17) and the inner layer processing ring (11) are integrally formed, the powder leakage groove (17) is provided with eight powder leakage holes (18), and the powder leakage holes (18) and the inner layer processing ring (11) are integrally formed.
8. The seal structure of the lower frame body of the coal mill as claimed in claim 1, wherein: the output end of the vacuum pump (4) is provided with a vacuum pump dustproof pipe (20), and the vacuum pump dustproof pipe (20) is connected with the vacuum pump (4) in a flange mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010804383.3A CN112032303A (en) | 2020-08-11 | 2020-08-11 | Coal pulverizer lower frame body seal structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010804383.3A CN112032303A (en) | 2020-08-11 | 2020-08-11 | Coal pulverizer lower frame body seal structure |
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| CN112032303A true CN112032303A (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010804383.3A Pending CN112032303A (en) | 2020-08-11 | 2020-08-11 | Coal pulverizer lower frame body seal structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412992A (en) * | 2022-01-24 | 2022-04-29 | 天津国能津能热电有限公司 | Coal pulverizer lower frame body seal structure |
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| CN103939689A (en) * | 2014-05-09 | 2014-07-23 | 王鹏 | Thermal expansion type pipeline sealing ring |
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| CN205761458U (en) * | 2016-06-07 | 2016-12-07 | 广东石油化工学院 | A kind of coal pulverizer properly mixing burning Indonesia coal |
| CN107051027A (en) * | 2017-04-01 | 2017-08-18 | 成都易态科技有限公司 | For the sealing structure between filter core and orifice plate |
| CN208651615U (en) * | 2018-07-25 | 2019-03-26 | 沈阳重型电站设备制造有限公司 | Medium-speed pulverizer lower frame sealing device |
| CN210661375U (en) * | 2019-09-17 | 2020-06-02 | 大连远东永昌自动化工程有限公司 | Sealing assembly for lower frame body of coal mill |
| CN210739365U (en) * | 2019-10-10 | 2020-06-12 | 南京欧博斯橡胶制品有限公司 | Heat-resisting sealing ring |
| CN211175351U (en) * | 2019-11-22 | 2020-08-04 | 苏州港阳科技有限公司 | Ready-package two-way seal circle |
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2020
- 2020-08-11 CN CN202010804383.3A patent/CN112032303A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6021967A (en) * | 1997-11-26 | 2000-02-08 | The Detroit Edison Company | Sealing assembly for a coal pulverizer |
| CN203500455U (en) * | 2013-09-05 | 2014-03-26 | 辽宁龙电伟业新能科技有限公司 | Improved sealing structure for lower frame body of coal mill |
| CN103939689A (en) * | 2014-05-09 | 2014-07-23 | 王鹏 | Thermal expansion type pipeline sealing ring |
| CN104180383A (en) * | 2014-07-30 | 2014-12-03 | 上海题桥能源科技发展有限公司 | Safe and environment-friendly pulverized coal preparation method and system |
| CN205761458U (en) * | 2016-06-07 | 2016-12-07 | 广东石油化工学院 | A kind of coal pulverizer properly mixing burning Indonesia coal |
| CN107051027A (en) * | 2017-04-01 | 2017-08-18 | 成都易态科技有限公司 | For the sealing structure between filter core and orifice plate |
| CN208651615U (en) * | 2018-07-25 | 2019-03-26 | 沈阳重型电站设备制造有限公司 | Medium-speed pulverizer lower frame sealing device |
| CN210661375U (en) * | 2019-09-17 | 2020-06-02 | 大连远东永昌自动化工程有限公司 | Sealing assembly for lower frame body of coal mill |
| CN210739365U (en) * | 2019-10-10 | 2020-06-12 | 南京欧博斯橡胶制品有限公司 | Heat-resisting sealing ring |
| CN211175351U (en) * | 2019-11-22 | 2020-08-04 | 苏州港阳科技有限公司 | Ready-package two-way seal circle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412992A (en) * | 2022-01-24 | 2022-04-29 | 天津国能津能热电有限公司 | Coal pulverizer lower frame body seal structure |
| CN114412992B (en) * | 2022-01-24 | 2024-06-25 | 天津国能津能热电有限公司 | Lower frame sealing structure of coal mill |
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Application publication date: 20201204 |
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| RJ01 | Rejection of invention patent application after publication |