CN117225542A - Coal mill of thermal power plant - Google Patents
Coal mill of thermal power plant Download PDFInfo
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- CN117225542A CN117225542A CN202311527498.2A CN202311527498A CN117225542A CN 117225542 A CN117225542 A CN 117225542A CN 202311527498 A CN202311527498 A CN 202311527498A CN 117225542 A CN117225542 A CN 117225542A
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- 239000003245 coal Substances 0.000 title claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 85
- 230000001360 synchronised effect Effects 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 4
- 230000008878 coupling Effects 0.000 abstract description 9
- 238000010168 coupling process Methods 0.000 abstract description 9
- 238000005859 coupling reaction Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
Abstract
The invention discloses a coal mill of a thermal power plant, which relates to the technical field of coal mills and comprises a machine body mechanism, a control mechanism and a control mechanism, wherein the machine body mechanism comprises a base, a shell arranged on the base and an internal frame arranged in the shell; the coal grinding mechanism comprises a driving part arranged on the base, a grinding disc connected with the driving part, a grinding roller arranged on the inner frame and a hydraulic rod for supporting the inner frame; the connecting mechanism comprises a roller body split frame, connecting parts arranged on the roller body split frame and limiting parts symmetrically arranged on the roller body split frame; through setting up coupling mechanism, the grinding roller rotates to be installed on the roll body divides the frame, passes through positioning mechanism and coupling mechanism with the roll body again and divides the frame to be installed on the internal frame, and the hookup location is in the position that the internal frame leaned on, and internal frame top space is great, and the maintainer of being convenient for dismantles and installs single grinding roller.
Description
Technical Field
The invention relates to the technical field of coal mills, in particular to a coal mill of a thermal power plant.
Background
The coal mill of thermal power plant generally comprises actuating mechanism, mill, tripod to and grinding roller isotructure, and the grinding roller can be rotationally installed on the tripod, and the tripod links to each other with the hydraulic stem, pulls the tripod through the hydraulic stem, can tightly push up the grinding roller on the mill, and when the mill rotated, can drive the grinding roller through frictional force and rotate, and the centrifugal force that produces when the mill rotated carries coal to between mill and the grinding roller, mill and grinding roller roll grind the coal.
In the prior art, a plurality of grinding rolls are all directly installed on the tripod, and grinding rolls and tripod pass through structural connection such as bearing, and this kind of connected mode can cause the tie point of grinding rolls and tripod to be in the position that the tripod is off-set, and this position space is comparatively narrow and small, and single grinding roll dismantles and installs all to have inconveniently, so when need dismantling single grinding roll in the maintenance process, need demolish whole tripod.
Disclosure of Invention
The present invention has been made in view of the above-mentioned problem of the prior art that the individual grinding rolls are difficult to disassemble.
The invention aims to provide a coal mill of a thermal power plant.
In order to solve the technical problems, the invention provides the following technical scheme: a coal mill of a thermal power plant comprises a machine body mechanism, a main body mechanism and a control mechanism, wherein the machine body mechanism comprises a base, a machine shell arranged on the base and an internal frame arranged in the machine shell; the coal grinding mechanism comprises a driving part arranged on the base, a grinding disc connected with the driving part, a grinding roller arranged on the inner frame and a hydraulic rod for supporting the inner frame; the connecting mechanism comprises a roller body split frame, connecting parts arranged on the roller body split frame and limiting parts symmetrically arranged on the roller body split frame; the positioning mechanism is arranged on the inner frame and comprises a positioning buckle part, an unlocking part and a force application part, wherein the unlocking part and the force application part are connected with the positioning buckle part; the grinding roller is rotatably arranged on the roller body split frame, and is arranged on the inner frame through the roller body split frame.
As a preferred scheme of the coal mill of the thermal power plant, the invention comprises the following steps: the connecting part comprises a sliding rod, a contact rod and a pushing component, wherein the sliding rod is slidably arranged on the roller body split frame, the contact rod is arranged at one end of the sliding rod, and the pushing component is arranged at the other end of the sliding rod; the limiting part comprises a fixed block arranged at the end part of the roller body split frame and a collision component fixed on the fixed block; the inner frame is fixedly provided with a butt joint buckle, the outer side of the sliding rod is sleeved with a locking spring, and the locking spring is propped against the abutting rod.
As a preferred scheme of the coal mill of the thermal power plant, the invention comprises the following steps: the positioning buckle part is symmetrically provided with a push-back surface, and buckle openings connected with the push-back surface are symmetrically arranged on the positioning buckle part; when the roller body split frame is arranged on the inner frame, the abutting rod is buckled with the buckling opening.
As a preferred scheme of the coal mill of the thermal power plant, the invention comprises the following steps: the device also comprises a placement frame mechanism; the frame body is fixed on the inner frame; a rack shaft mounted on the inner rack; the adjusting component is movably arranged on the frame shaft and is connected with the positioning mechanism; the positioning mechanism is movably arranged on the frame shaft, and when the positioning mechanism moves in the direction away from the frame body, the abutting rod is separated from the buckling opening.
As a preferred scheme of the coal mill of the thermal power plant, the invention comprises the following steps: the adjusting part comprises a fixed pipe component fixed on the unlocking part, a rotating ring rotatably arranged on the fixed pipe component, and a convex sliding block arranged on the inner side of the rotating ring; the frame shaft is provided with a side sliding groove parallel to the central axis of the frame shaft, and is also provided with a positioning arc groove and an unlocking arc groove which are communicated with the side sliding groove; the unlocking part is provided with a butt joint disengaging surface connected with the buckling opening; when the abutting-joint disengaging surface corresponds to the abutting-joint disengaging surface, the position of the protruding sliding block corresponds to the position of the unlocking arc groove, and when the buckling opening corresponds to the abutting-joint disengaging surface, the position of the protruding sliding block corresponds to the position of the positioning arc groove.
As a preferred scheme of the coal mill of the thermal power plant, the invention comprises the following steps: the device also comprises a synchronizing mechanism; the synchronous shaft body movably penetrates through the abutting component; a pressing ring fixed to the outer side of the synchronization shaft body; one end of the first elastic piece is abutted against the fixed block, and the other end of the first elastic piece is abutted against the pressing ring; a pressed block which is arranged at the end part of the synchronous shaft body; the pushing member includes an insertion angle away from the sliding bar and a push-off surface that interfaces with the insertion angle.
As a preferred scheme of the coal mill of the thermal power plant, the invention comprises the following steps: the force application part is provided with a force application surface connected with the buckling opening and a contact surface connected with the force application surface; and the frame shaft is also provided with a synchronous arc groove, and the position of the convex sliding block corresponds to the position of the synchronous arc groove when the abutting rod corresponds to the abutting surface.
As a preferred scheme of the coal mill of the thermal power plant, the invention comprises the following steps: the device also comprises a locking mechanism; the movable column is movably arranged on the contact resisting rod; a push plate fixed on the movable column; one end of the second elastic piece is in interference with the interference rod, and the other end of the second elastic piece is in interference with the push plate; an insert button fixed on the push plate; the roller body split frame is provided with a side groove, the roller body split frame is provided with a slot in the side groove, and the sliding rod is positioned when the insert buckle enters the slot.
As a preferred scheme of the coal mill of the thermal power plant, the invention comprises the following steps: a concave hole is formed in one side, facing the slot, of the abutting rod, and a through hole is formed in the bottom of the concave hole of the abutting rod; the end of the movable column passes through the through hole and extends to the outside of the concave hole.
As a preferred scheme of the coal mill of the thermal power plant, the invention comprises the following steps: a sleeve is fixed on the roller body split frame, and a guide block is arranged on the inner side of the sleeve; the sliding rod is provided with a guide groove, and the guide block is positioned in the guide groove when the sleeve is sleeved on the outer side of the sliding rod.
The invention has the beneficial effects that: through setting up coupling mechanism, the grinding roller rotates to be installed on the roll body divides the frame, passes through positioning mechanism and coupling mechanism with the roll body again and divides the frame to be installed on the internal frame, and the hookup location is in the position that the internal frame leaned on, and internal frame top space is great, and the maintainer of being convenient for dismantles and installs single grinding roller.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a coal mill in a thermal power plant.
Fig. 2 is a schematic view of the structure of the inner frame and the millstone in the present invention.
Fig. 3 is a schematic view of the structure of the inner frame and the connecting mechanism in the invention.
Fig. 4 is a top view of the inner frame of the present invention.
Fig. 5 is a schematic structural view of a positioning mechanism and a connecting mechanism in the present invention.
FIG. 6 is a schematic view of the positioning mechanism and the placement frame mechanism according to the present invention.
Fig. 7 is a schematic structural diagram of a connection mechanism and a synchronization mechanism in the present invention.
Fig. 8 is a schematic view of a part of the structure of the connecting mechanism in the present invention.
Fig. 9 is an exploded view of the structure of the rotating ring and the rack shaft in the present invention.
Fig. 10 is an enlarged view of fig. 5 a in accordance with the present invention.
Fig. 11 is a schematic view of the structure of the sliding rod and the sleeve in the present invention.
Wherein: 100. a body mechanism; 101. a base; 102. a housing; 103. an inner frame; 103a, butt-joint buckles; 103b, a supporting part; 103c, bottom pallet; 200. a coal grinding mechanism; 201. a driving part; 202. grinding disc; 203. grinding roller; 204. a hydraulic rod; 300. a connecting mechanism; 301. separating the roller body; 301a, side grooves; 301b, slots; 301c, a sleeve; 301d, a guide block; 302. a connecting member; 302a, a sliding bar; 302a-1, guide slots; 302b, a knock bar; 302b-1, concave holes; 302b-2, through holes; 302c, pushing member; 302c-1, insertion angle; 302c-2, push off face; 302d, locking springs; 303. a limiting member; 303a, a fixed block; 303b, an interference member; 400. a positioning mechanism; 401. a positioning buckle part; 401a, push-back surface; 401b, a buckling opening; 402. an unlocking part; 402a, a docking disengagement face; 403. a force application part; 403a, force application surface; 403b, an interference surface; 500. a placement frame mechanism; 501. a frame body; 502. a support shaft; 502a, sideslip groove; 502b, positioning an arc groove; 502c, unlocking the arc groove; 502d, synchronizing arc grooves; 503. an adjusting part; 503a, fixing the tube member; 503b, a rotating ring; 503c, raised sliders; 600. a synchronizing mechanism; 601. a synchronizing shaft body; 602. a pressing ring; 603. a first elastic member; 604. pressing blocks; 700. a locking mechanism; 701. a movable column; 702. a push plate; 703. a second elastic member; 704. inserting a buckle; 704a, cambered surface.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Further, in describing the embodiments of the present invention in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of description, and the schematic is only an example, which should not limit the scope of protection of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Example 1
Referring to fig. 1 to 7 and 11, there is provided a coal mill for a thermal power plant, comprising a body mechanism 100 including a base 101, a housing 102 provided on the base 101, and an internal frame 103 provided within the housing 102, the base 101 being adapted to carry the entire apparatus.
The coal mill of the thermal power plant comprises a coal mill mechanism 200, a grinding wheel 202, a grinding roller 203 and a hydraulic rod 204, wherein the driving part 201 is arranged on a base 101, the grinding wheel 202 is connected with the driving part 201, the grinding roller 203 is arranged on an inner frame 103, and the hydraulic rod 204 is used for supporting the inner frame 103; the driving part 201 is composed of a driving motor and a speed reducer, the driving motor provides power to drive the speed reducer to rotate, the speed reducer transmits power to the grinding disc 202 to drive the grinding disc 202 to rotate, the inner frame 103 is pulled through the hydraulic rod 204, so that the grinding roller 203 is abutted against the grinding disc 202, coal moves towards the edge of the grinding disc 202 under the action of centrifugal force, reaches between the grinding roller 203 and the grinding disc 202, and is rolled into coal dust.
The coal mill of thermal power plant includes coupling mechanism 300, including roll body split frame 301, locate coupling part 302 on the roll body split frame 301, and the spacing part 303 on the roll body split frame 301 is located to the symmetry, in prior art, the quantity of grinding roller 203 is a plurality of, in this embodiment, this coal mill of thermal power plant has three grinding roller 203, three roll body split frame 301, three grinding roller 203 passes through bearing structure rotation and installs on roll body split frame 301, through coupling part 302, install on internal frame 103, when maintenance needs to dismantle grinding roller 203, need not to separate internal frame 103 and hydraulic stem 204, and dismantle roll body split frame 301 from internal frame 103, can very quick dismantlement with grinding roller 203.
The coal mill of the thermal power plant comprises a positioning mechanism 400, the positioning mechanism 400 is arranged on the inner frame 103, the positioning mechanism 400 comprises a positioning buckle part 401, when the roller body sub-frame 301 is arranged on the inner frame 103, the connecting part 302 and the positioning buckle part 401 buckle, and the limiting parts 303 on the plurality of roller body sub-frames 301 are mutually abutted, so that the roller body sub-frames 301 are stably and rapidly fixed on the inner frame 103.
In this embodiment, the inner frame 103 is triangular, the three included angles are all provided with supporting portions 103b, the supporting portions 103b can be connected with the hydraulic rods 204, the positions of the inner frame 103 where the roller body split frames 301 are installed are provided with bottom supporting plates 103c at the bottoms corresponding to the positions, when the roller body split frames 301 are installed on the inner frame 103, the bottoms of the roller body split frames 301 are attached to the bottom supporting plates 103c, and the bottom supporting plates 103c support the roller body split frames 301.
Compared with the prior art, through setting up positioning mechanism 400 and coupling mechanism 300, grinding roller 203 rotates to install on roller body sub-frame 301, passes through positioning mechanism 400 and coupling mechanism 300 to be installed on internal frame 103 again with roller body sub-frame 301, and the hookup location is in the position that internal frame 103 was up, and internal frame 103 top space is great, and the maintainer of being convenient for dismantles and installs single grinding roller 203.
Further, the connecting component 302 includes a sliding rod 302a slidably mounted on the roller body sub-frame 301, a pushing rod 302b disposed at one end of the sliding rod 302a, and a pushing member 302c disposed at the other end of the sliding rod 302a, where a locking spring 302d is sleeved on the outer side of the sliding rod 302a, the locking spring 302d abuts against the pushing rod 302b, the locking spring 302d pushes the pushing rod 302b, and when the roller body sub-frame 301 is mounted on the inner frame 103, the pushing rod 302b can be fastened with the positioning buckle portion 401 under the pushing of the locking spring 302d, so that the problem that the roller body sub-frame 301 is separated is avoided.
Limiting component 303 is including locating the fixed block 303a of roll body sub-frame 301 tip to and be fixed in the conflict component 303b on the fixed block 303a, the equal fixed block 303a of both ends of roll body sub-frame 301, all install conflict component 303b on every fixed block 303a, when installing, the tip that roll body sub-frame 301 was kept away from to conflict component 303b on several roll body sub-frames 301, contradicts each other, and after three roll body sub-frames 301 were installed, conflict component 303b can avoid roll body sub-frame 301 horizontal migration to the position of roll body sub-frame 301 is firm more.
A butt-joint buckle 103a is fixed on the inner frame 103, the top of the butt-joint buckle 103a is provided with an opening, and when the roller body sub-frame 301 is installed, the end part of the abutting member 303b far away from the roller body sub-frame 301 enters from the top opening of the butt-joint buckle 103 a.
Further, the positioning buckle portion 401 is symmetrically provided with a push-back surface 401a, and the positioning buckle portion 401 is symmetrically provided with a buckle opening 401b connected with the push-back surface 401 a; when the roller body split frame 301 is mounted on the inner frame 103, the abutting rod 302b is buckled with the buckling opening 401 b.
Further, a sleeve 301c is fixed on the roller body separating frame 301, and a guide block 301d is arranged on the inner side of the sleeve 301 c; the sliding rod 302a is provided with a guide groove 302a-1, a sleeve 301c is sleeved on the outer side of the sliding rod 302a, a guide block 301d is positioned in the guide groove 302a-1, the guide block 301d is attached to the groove wall of the guide groove 302a-1, when the sliding rod 302a moves, the guide block 301d is positioned in the guide groove 302a-1, the sliding rod 302a can be prevented from rotating, the sliding rod 302a is mounted on the roller body split frame 301 through the sleeve 301c, one end of a locking spring 302d is in interference with the sleeve 301c, and the other end of the locking spring 302d is in interference with the interference rod 302 b.
Through the above scheme, when the roller body split frame 301 is installed, two abutting rods 302b on the roller body split frame 301 can respectively contact the push-back surface 401a of the positioning buckle part 401, so that the two abutting rods 302b are far away from each other, and the two abutting rods 302b both press the locking spring 302d, when the abutting rods 302b and the push-back surface 401a are separated, the positions correspond to the buckling openings 401b, under the pushing of the locking spring 302d, the abutting rods 302b are inserted into the buckling openings 401b, and therefore the roller body split frame 301 is installed on the inner frame 103, and the problem that the roller body split frame 301 is separated from the inner frame 103 in the running process of the device can be avoided through the cooperation between the abutting members 303 b.
Example 2
Referring to fig. 3 to 9, this embodiment differs from the first embodiment in that: in order to facilitate unlocking of the roller body split frame 301, the coal mill of the thermal power plant further comprises a setting frame mechanism 500; it includes a frame body 501 fixed to the inner frame 103; a rack shaft 502 mounted on the inner rack 103; an adjusting member 503 movably provided on the frame shaft 502 and connected to the positioning mechanism 400; the positioning mechanism 400 is movably mounted on the frame shaft 502, and the positioning mechanism 400 further includes an unlocking portion 402, so that when the positioning mechanism 400 moves away from the frame 501, the abutting rod 302b is disengaged from the fastening hole 401 b.
When the roller body split frame 301 is unlocked, the adjusting component 503 is unlocked firstly, the position of the positioning mechanism 400 is adjusted through the adjusting component 503, the buckling opening 401b is separated from the abutting rod 302b, the position of the abutting rod 302b corresponds to the unlocking part 402, the roller body split frame 301 and the inner frame 103 can be unlocked, and an operator can hoist the unlocked roller body split frame 301 from the inner frame 103 through the hoisting device.
Specifically, the adjusting part 503 includes a fixed pipe member 503a fixed to the unlocking part 402, a rotating ring 503b rotatably provided on the fixed pipe member 503a, and a protruding slider 503c provided inside the rotating ring 503 b; the frame shaft 502 is provided with a sideslip groove 502a parallel to the central axis of the frame shaft 502, and the frame shaft 502 is also provided with a positioning arc groove 502b and an unlocking arc groove 502c which are communicated with the sideslip groove 502 a; the unlocking part 402 has a mating and disengaging surface 402a that contacts the socket 401b; the abutment release surface 402a corresponds to the abutment lever 302b, the protruding slider 503c corresponds to the unlocking arc groove 502c, and the notch 401b corresponds to the abutment lever 302b, and the protruding slider 503c corresponds to the positioning arc groove 502 b.
Wherein, there is no shielding portion above the abutting and separating surface 402a relative to the buckling opening 401b, so that the abutting rod 302b can move upwards to separate from the positioning mechanism 400.
In the installation state, the position of the buckling opening 401b corresponds to the position of the abutting rod 302b, and the protruding sliding block 503c is located in the positioning arc groove 502b, so that the adjustment component 503 is prevented from moving, and the whole positioning mechanism 400 is in a non-sliding state.
When unlocking is needed, the rotating ring 503b can be rotated, so that the protruding sliding block 503c rotates to the sideslip groove 502a, when the protruding sliding block 503c rotates to the sideslip groove 502a, the adjusting component 503 can be moved away from the direction of the frame body 501, the fixed pipe component 503a drives the positioning mechanism 400 to integrally move away from the direction of the frame body 501, the buckling opening 401b of the positioning mechanism 400 and the abutting rod 302b are dislocated, the unlocking part 402 of the positioning mechanism 400 corresponds to the abutting rod 302b in position, in this case, the abutting-and-separating surface 402a corresponds to the abutting rod 302b in position, so that the abutting rod 302b is not positioned by the positioning mechanism 400 any more, and then the rotating ring 503b is selected, so that the protruding sliding block 503c enters into the unlocking arc groove 502c, and the roller body split frame 301 is in a stable unlocking state.
The rest of the structure is the same as in embodiment 1.
Example 3
Referring to fig. 4 to 10, this embodiment differs from the above embodiments in that: in some service situations, not just a single grinding roller 203 is removed, but all grinding rollers 203 need to be removed, so the coal mill of the present thermal power plant also includes a synchronization mechanism 600; it includes a synchronization shaft 601 which movably penetrates the interference member 303b; a pressing ring 602 fixed to the outer side of the synchronization shaft 601; a first elastic member 603 having one end abutting against the fixed block 303a and the other end abutting against the pressing ring 602; a pressure receiving block 604 provided at an end of the synchronization shaft body 601; pushing member 302c includes an insertion angle 302c-1 away from slide bar 302a and a push-off surface 302c-2 that interfaces with insertion angle 302 c-1.
By moving the sliding rod 302a, the pushing surface 302c-2 of the pushing member 302c abuts against the pressed block 604, so that the synchronous shaft body 601 is pushed to move, the end of the synchronous shaft body 601 enters into the abutting member 303b of the adjacent roller body sub-frame 301, so that the plurality of roller body sub-frames 301 are synchronously connected together, and the plurality of roller body sub-frames 301 can be lifted at the same time by one-time lifting.
In this embodiment, the abutting member 303b is tubular, and the synchronizing shaft 601 can slide inside the abutting member 303 b.
Further, the positioning mechanism 400 further includes a biasing portion 403, and the biasing portion 403 includes a biasing surface 403a connected to the socket 401b and an abutting surface 403b connected to the biasing surface 403 a; the frame shaft 502 is further provided with a synchronous arc groove 502d, and when the abutting rod 302b corresponds to the abutting surface 403b, the position of the protruding sliding block 503c corresponds to the position of the synchronous arc groove 502 d.
The force application surface 403a is an inclined surface, and extends towards the two end portions of the roller body sub-frame 301 relative to the buckling opening 401b, no shielding exists above the force application surface 403b, when the roller body sub-frame 301 needs to be unlocked and a plurality of roller body sub-frames 301 are connected, all the positioning mechanisms 400 can be moved towards the direction close to the frame body 501, so that the force application surface 403a pushes the force application rods 302b, two force application rods 302b on the same roller body sub-frame 301 are moved towards the direction away from each other, the pushing member 302c is moved, the pushing-off surface 302c-2 of the pushing member 302c pushes the pressed block 604, the synchronous shaft body 601 is pushed to move, and the synchronous shaft body 601 is inserted into the adjacent push-down members 303b, so that the plurality of roller body sub-frames 301 are connected together.
In the installation state, the position of the buckling opening 401b corresponds to the position of the abutting rod 302b, the protruding sliding block 503c is located in the positioning arc groove 502b, so that the adjustment part 503 is prevented from moving, the whole position of the positioning mechanism 400 cannot slide, when three roller body split frames 301 need to be detached at the same time, the rotating ring 503b can be rotated, the protruding sliding block 503c is separated from the positioning arc groove 502b, then the rotating ring 503b is moved towards the direction approaching the frame body 501, the positioning mechanism 400 is driven to move towards the direction approaching the frame body 501, and a plurality of roller body split frames 301 are connected together.
In this embodiment, only one of the two abutting members 303b of the roller body sub-frame 301 is provided with the synchronizing mechanism 600, and the other abutting member 303b is not provided with the synchronizing mechanism 600, so that the synchronizing shaft body 601 on the adjacent roller body sub-frame 301 is inserted into the inside thereof.
Further, a locking mechanism 700 is also included; the movable column 701 is movably arranged on the contact rod 302 b; a push plate 702 fixed to the movable column 701; a second elastic member 703 having one end abutting against the abutting lever 302b and the other end abutting against the push plate 702; an insert button 704 secured to the push plate 702; the roller body sub-frame 301 is provided with a side groove 301a, the roller body sub-frame 301 is provided with a slot 301b in the side groove 301a, and the sliding rod 302a is positioned when the insert button 704 enters the slot 301 b.
Wherein, one side of the insert button 704 far away from the positioning mechanism 400 is provided with an arc surface 704a, when the force application surface 403a presses the contact rod 302b, the contact rod 302b drives the insert button 704 to move towards the direction of the slot 301b, in the process of entering the side slot 301a, the arc surface 704a is contacted, the push plate 702 presses the second elastic piece 703 to retract the insert button 704, when the force application surface 403a pushes the contact rod 302b to reach the maximum stroke, the position of the insert button 704 corresponds to the position of the slot 301b, the insert button 704 enters the interior of the slot 301b, so that the contact rod 302b cannot rebound under the pushing of the locking spring 302d, thereby the synchronous shaft 601 cannot be reset, the synchronous shaft 601 is stably inserted into the interior of the contact member 303b on the adjacent roller sub-frame 301, and the stability of the connection of a plurality of roller sub-frames 301 is improved.
Further, a concave hole 302b-1 is formed on one side of the abutting rod 302b facing the slot 301b, and a through hole 302b-2 is formed on the bottom of the concave hole 302b-1 by the abutting rod 302 b; the end of movable post 701 extends through-hole 302b-2 to the exterior of recess 302 b-1.
In the process of maintenance, when a plurality of grinding rollers 203 need to be separated, the movable column 701 can be pulled to the direction away from the slot 301b by extending to the end part outside the concave hole 302b-1 through the movable column 701, at this time, the abutting rod 302b is not limited any more, the locking spring 302d pushes the abutting rod 302b to reset, the second elastic piece 703 pushes the synchronous shaft body 601 to reset through the pressing ring 602, and the synchronous shaft body 601 is separated from the abutting member 303b of the adjacent roller body split frame 301, so that the plurality of roller body split frames 301 are unlocked.
The rest of the structure is the same as in embodiment 2.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (9)
1. A coal mill of thermal power plant, its characterized in that: comprising the steps of (a) a step of,
a body mechanism (100) comprising a base (101), a housing (102) provided on the base (101), and an inner frame (103) provided in the housing (102);
the coal grinding mechanism (200) comprises a driving component (201) arranged on the base (101), a grinding disc (202) connected with the driving component (201), a grinding roller (203) arranged on the inner frame (103) and a hydraulic rod (204) for supporting the inner frame (103);
the connecting mechanism (300) comprises a roller body split frame (301), a connecting part (302) arranged on the roller body split frame (301), and limit parts (303) symmetrically arranged on the roller body split frame (301); the method comprises the steps of,
the positioning mechanism (400), the positioning mechanism (400) is arranged on the inner frame (103), the positioning mechanism (400) comprises a positioning buckle part (401), and the positioning mechanism (400) further comprises an unlocking part (402) and a force application part (403) which are connected with the positioning buckle part (401);
the grinding roller (203) is rotatably arranged on the roller body split frame (301), and the grinding roller (203) is arranged on the inner frame (103) through the roller body split frame (301);
the connecting component (302) comprises a sliding rod (302 a) which is slidably arranged on the roller body split frame (301), an abutting rod (302 b) which is arranged at one end of the sliding rod (302 a), and a pushing component (302 c) which is arranged at the other end of the sliding rod (302 a);
the limiting component (303) comprises a fixed block (303 a) arranged at the end part of the roller body separating frame (301), and an abutting component (303 b) fixed on the fixed block (303 a);
a butt joint buckle (103 a) is fixed on the inner frame (103);
the outer side of the sliding rod (302 a) is sleeved with a locking spring (302 d), and the locking spring (302 d) is abutted against the abutting rod (302 b).
2. The coal pulverizer of a thermal power plant of claim 1, wherein: the positioning buckle part (401) is symmetrically provided with a push-back surface (401 a), and the positioning buckle part (401) is symmetrically provided with a buckle opening (401 b) connected with the push-back surface (401 a);
when the roller body split frame (301) is installed on the inner frame (103), the abutting rod (302 b) is buckled with the buckling opening (401 b).
3. The coal pulverizer of claim 2, wherein: also comprises a placement frame mechanism (500); which comprises the steps of (a) a step of,
a frame body (501) fixed to the inner frame (103);
a rack shaft (502) mounted on the inner rack (103);
an adjusting member (503) movably provided on the frame shaft (502) and connected to the positioning mechanism (400);
the positioning mechanism (400) is movably mounted on the frame shaft (502), and when the positioning mechanism (400) moves away from the frame body (501), the abutting rod (302 b) is separated from the buckling opening (401 b).
4. The coal pulverizer of claim 3, wherein: the adjusting component (503) comprises a fixed pipe component (503 a) fixed on the unlocking part (402), a rotating ring (503 b) rotatably arranged on the fixed pipe component (503 a), and a convex sliding block (503 c) arranged on the inner side of the rotating ring (503 b);
a sideslip groove (502 a) parallel to the central axis of the frame shaft (502) is formed in the frame shaft (502), and a positioning arc groove (502 b) and an unlocking arc groove (502 c) which are communicated with the sideslip groove (502 a) are formed in the frame shaft (502);
the unlocking part (402) is provided with a butt joint disengaging surface (402 a) connected with the buckling opening (401 b);
when the abutting-joint disengaging surface (402 a) corresponds to the abutting-joint disengaging lever (302 b), the position of the protruding sliding block (503 c) corresponds to the position of the unlocking arc groove (502 c), and when the buckling opening (401 b) corresponds to the abutting-joint disengaging lever (302 b), the position of the protruding sliding block (503 c) corresponds to the position of the positioning arc groove (502 b).
5. The coal pulverizer of a thermal power plant of claim 4, wherein: further comprising a synchronizing mechanism (600); which comprises the steps of (a) a step of,
a synchronizing shaft body (601) that penetrates the abutting member (303 b) movably;
a pressing ring (602) fixed to the outer side of the synchronization shaft body (601);
a first elastic member (603) having one end abutting against the fixed block (303 a) and the other end abutting against the pressing ring (602);
a pressure receiving block (604) provided at an end of the synchronization shaft body (601);
the pushing member (302 c) includes an insertion angle (302 c-1) away from the slide bar (302 a), and a push-off surface (302 c-2) that interfaces with the insertion angle (302 c-1).
6. The coal pulverizer of a thermal power plant of claim 5, wherein: the force application part (403) is provided with a force application surface (403 a) connected with the buckling opening (401 b) and a contact surface (403 b) connected with the force application surface (403 a);
and the frame shaft (502) is also provided with a synchronous arc groove (502 d), and when the abutting rod (302 b) corresponds to the abutting surface (403 b), the position of the convex sliding block (503 c) corresponds to the position of the synchronous arc groove (502 d).
7. The coal pulverizer of claim 5 or 6, wherein: also includes a locking mechanism (700); which comprises the steps of (a) a step of,
a movable column (701) movably arranged on the abutting rod (302 b);
a push plate (702) fixed to the movable column (701);
a second elastic member (703) having one end abutting against the abutting lever (302 b) and the other end abutting against the push plate (702);
an insert button (704) secured to the push plate (702);
the roller body split frame (301) is provided with a side groove (301 a), the roller body split frame (301) is provided with a slot (301 b) in the side groove (301 a), and when the insert buckle (704) enters the slot (301 b), the sliding rod (302 a) is positioned.
8. The coal pulverizer of claim 7, wherein: a concave hole (302 b-1) is formed in one side, facing the slot (301 b), of the abutting rod (302 b), and a through hole (302 b-2) is formed in the bottom of the concave hole (302 b-1) of the abutting rod (302 b);
the end of the movable column (701) passes through the through hole (302 b-2) and extends to the outside of the concave hole (302 b-1).
9. The coal pulverizer of claim 8, wherein: a sleeve (301 c) is fixed on the roller body split frame (301), and a guide block (301 d) is arranged on the inner side of the sleeve (301 c);
the sliding rod (302 a) is provided with a guide groove (302 a-1), and the guide block (301 d) is positioned in the guide groove (302 a-1) when the sleeve (301 c) is sleeved on the outer side of the sliding rod (302 a).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311527498.2A CN117225542B (en) | 2023-11-16 | 2023-11-16 | Coal mill of thermal power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311527498.2A CN117225542B (en) | 2023-11-16 | 2023-11-16 | Coal mill of thermal power plant |
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| CN117225542B CN117225542B (en) | 2024-04-02 |
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| JPH09248472A (en) * | 1996-03-12 | 1997-09-22 | Babcock Hitachi Kk | Roller mill |
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|---|---|
| CN117225542B (en) | 2024-04-02 |
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