CN117920442B - A ejection of compact screening plant for intelligent coal pulverizer - Google Patents
A ejection of compact screening plant for intelligent coal pulverizer Download PDFInfo
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- CN117920442B CN117920442B CN202410323338.4A CN202410323338A CN117920442B CN 117920442 B CN117920442 B CN 117920442B CN 202410323338 A CN202410323338 A CN 202410323338A CN 117920442 B CN117920442 B CN 117920442B
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- 238000012216 screening Methods 0.000 title claims abstract description 128
- 239000003245 coal Substances 0.000 title claims abstract description 80
- 238000000926 separation method Methods 0.000 claims description 18
- 230000000903 blocking effect Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000002817 coal dust Substances 0.000 abstract description 26
- 238000007599 discharging Methods 0.000 abstract description 10
- 239000000843 powder Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000227 grinding Methods 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to the technical field of pulverized coal screening, in particular to a discharging screening device for an intelligent coal mill, which comprises supporting frames distributed symmetrically left and right; the feeding unit is arranged between the two supporting frames; and the blanking units are circumferentially and uniformly arranged at a plurality of positions and are arranged at the lower end of the cylindrical frame. The feeding component is matched with the conical bulge, so that a large amount of coal dust can be effectively subjected to component treatment, the problem of insufficient screening caused by centralized screening of a large amount of coal dust is avoided, the screening of the component coal dust has time difference, and the component treatment effect and screening efficiency are further improved; the blanking unit adopted by the invention has the function of carrying out multiple groups of small-amount screening on the coal powder, and effectively improves the screening effect of a large amount of coal powder.
Description
Technical Field
The invention relates to the technical field of pulverized coal screening, in particular to a discharging screening device for an intelligent coal mill.
Background
The coal mill is a special device for grinding and drying coal powder, the coal powder is generally used for combustion devices such as boilers, industrial kilns and the like, and the coal mill grinds raw coarse coal into fine coal powder so as to improve the combustion efficiency and the energy utilization rate of the coal.
The coal mill consists of a crushed coal part, a drying part and a coal grinding part, wherein the crushed coal part is formed by crushing raw coal blocks into smaller particles through a crusher or a masher; the drying part is used for drying the pulverized coal so as to reduce the water content of the pulverized coal and improve the combustion efficiency of the pulverized coal; the coal grinding part is to further grind the pulverized coal through a coal mill so as to obtain the required granularity and uniformity and ensure that the requirements of combustion equipment are met.
The pulverized coal subjected to the coal grinding part treatment is subjected to screening treatment, a large amount of pulverized coal is directly and integrally screened in a centralized manner by using vibrating screen equipment at present, and a large amount of pulverized coal is accumulated to influence the screening efficiency, so that the problem that part of pulverized coal cannot be screened completely is solved, the pulverized coal screening effect is reduced, and fine screening is difficult to obtain on the whole pulverized coal.
Disclosure of Invention
Based on this, it is necessary to provide a discharge screening device for intelligent coal mill, aiming at solving the technical problems.
In order to achieve the above purpose, the present invention is implemented by adopting the following technical scheme: a ejection of compact screening plant for intelligent coal pulverizer includes bilateral symmetry's support frame.
The feeding unit is arranged between the two supporting frames, the feeding unit comprises a cylindrical frame arranged between the two supporting frames, the upper end of the bottom wall of the cylindrical frame is provided with a conical protrusion, a plurality of blanking holes which are uniformly distributed in the circumferential direction are formed in the conical protrusion, the blanking holes penetrate through the bottom wall of the cylindrical frame, and the top wall of the cylindrical frame is connected with a feeding component.
The blanking unit, circumference evenly is provided with a plurality of and installs the cylindricality frame lower extreme, the blanking unit include with blanking hole intercommunication and with cylindricality frame lower extreme fixed connection's guide tube, guide tube be V type and its lower extreme draw close to the vertical axis of cylindricality frame, the inside position that is close to the cylindricality frame of guide tube is connected with a plurality of dispersing parts from last to lower evenly distributed, the broken scattered pole of a plurality of level evenly distributed is installed to guide tube corner, the screening net is installed to the one end lower frame wall that the cylindricality frame was kept away from to the guide tube.
The dispersing component comprises a dispersing plate rotatably connected to the inner wall of the guide pipe, and an auxiliary spring is arranged between the lower end of the dispersing plate and the inner wall of the guide pipe.
The collecting unit is arranged below the cylindrical frame and comprises an inverted conical screening plate which is arranged right below the cylindrical frame, and the lower end of the guide tube is arranged above the conical screening plate.
According to the embodiment of the invention, the feeding unit further comprises a first driving motor arranged at the upper end of the cylindrical frame, and a driving gear is fixedly connected to an output shaft of the first driving motor and is rotatably connected with the upper end of the cylindrical frame.
According to the embodiment of the invention, the feeding part comprises a Z-shaped pipe penetrating through and rotatably connected to the top wall of the cylindrical frame, the upper end of the Z-shaped pipe is provided with a driven gear, the driven gear is meshed with the driving gear, the upper end of the Z-shaped pipe is inserted with a feeding pipe, and the outer surface of the lower end of the Z-shaped pipe is provided with a stirring plate matched with the circumferential surface of the conical protrusion.
The collecting unit further comprises a collecting frame fixedly connected with the lower ends of the two supporting frames, a second driving motor is installed in the collecting frame, a vibrating part is installed on an output shaft of the second driving motor, the upper end of the vibrating part is fixedly connected with a conical screening plate, a discharging hole is formed in the middle of the conical screening plate, a separating part is slidably connected with the middle of the conical screening plate, and the separating part is fixedly connected with the lower end of the cylindrical frame.
According to the embodiment of the invention, the lower end of the conical screening plate is provided with the conical ring plate, the lower end of the conical ring plate is provided with the material blocking cover, the lower end of the material blocking cover is provided with the rotating ring, and the rotating ring is rotationally connected with the bottom wall of the collecting frame.
According to the embodiment of the invention, the vibration part comprises a rotating block arranged on the output shaft of the second driving motor, a plurality of L-shaped rods which are uniformly distributed in the circumferential direction are arranged on the outer ring surface of the rotating block, the horizontal section of each L-shaped rod penetrates through the material blocking cover, the upper end of the vertical section of each L-shaped rod is provided with a connecting counter bore, a lifting rod is connected in the connecting counter bore in a sliding manner, a supporting spring is arranged between the lifting rod and the inner bottom wall of the connecting counter bore, and the upper end of each lifting rod is fixedly connected with the conical screening plate.
According to the embodiment of the invention, the separating component comprises a hydraulic push rod arranged at the lower end of the cylindrical frame, a circular plate is arranged at the lower end of the hydraulic push rod, a plurality of round rods which are uniformly distributed in the circumferential direction are arranged at the lower end of the circular plate, round pipes are jointly arranged at the lower ends of the round rods, the round pipes are rotationally connected with the conical screening plates, and the round pipes are simultaneously in sliding connection with the conical screening plates.
According to the embodiment of the invention, the plurality of support columns which are uniformly distributed are arranged at the lower end of the collecting frame, the middle part of the bottom wall of the collecting frame is provided with the separation hole, the separation hole is rotationally connected with the rotating ring, the middle part of the separation hole is provided with the support rod, and the support rod is fixedly connected with the second driving motor.
The screening net is provided with two triangular projections at one end of the corner of the guide pipe, the triangular projections are fixedly connected with the outer wall of the guide pipe, and a plurality of arc-shaped projections which are uniformly distributed in the circumferential direction are arranged at the position, far away from the axis, of the inner annular surface of the conical screening plate.
The dispersing component further comprises a separation membrane connected between the lower end of the dispersing plate and the inner wall of the guide pipe.
In summary, the invention has the following beneficial effects: 1. the feeding component and the conical protrusion are matched, so that a large amount of pulverized coal can be effectively subjected to component treatment, the problem of insufficient screening caused by centralized screening of a large amount of pulverized coal is avoided, the screening of the component pulverized coal has time difference, and the component treatment effect and screening efficiency are further improved.
2. The blanking unit adopted by the invention has the function of carrying out multiple groups of small-amount screening on the coal dust, effectively improves the screening effect of a large amount of coal dust, can carry out multiple dispersion on the coal dust which is agglomerated or not completely separated after grinding before the screening of the coal dust, lays a foundation for the subsequent full and rapid screening, increases the screening output, and reduces the workload of the subsequent regrinding and screening of the coal dust which does not meet the requirements.
3. The blanking unit and the collecting unit are matched, so that vibration treatment can be performed in the screening process, the phenomenon of blockage of the blanking unit and the collecting unit is avoided, the function of repeatedly vibrating and dispersing pulverized coal can be realized, and the screening effect of the pulverized coal is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic view of a first perspective view of a discharge screening device for an intelligent coal pulverizer according to an embodiment of the invention.
Fig. 2 shows a second perspective view of a discharge screening device for an intelligent coal pulverizer according to an embodiment of the invention.
Fig. 3 shows a front view of a discharge screening device for an intelligent coal pulverizer, provided in accordance with an embodiment of the present invention.
Fig. 4 shows a left side view of a discharge screening device for an intelligent coal pulverizer, provided in accordance with an embodiment of the present invention.
Figure 5 shows a cross-sectional view of A-A in figure 3.
Fig. 6 shows an enlarged view of the N region in fig. 5.
Fig. 7 shows a cross-sectional view of B-B in fig. 4.
Fig. 8 shows a schematic structural diagram of a blanking unit of a discharge screening device for an intelligent coal mill according to an embodiment of the invention.
Fig. 9 shows a schematic structural view of a second drive motor, a vibrating member, a conical screening plate, an arc-shaped protrusion and a separating member of a discharge screening device for an intelligent coal pulverizer, according to an embodiment of the present invention.
Wherein the above figures include the following reference numerals: 1. a support frame; 2. a feeding unit; 21. a cylindrical frame; 22. a conical protrusion; 23. a blanking hole; 24. a feed member; 241. a Z-shaped tube; 242. a driven gear; 243. a feed pipe; 244. a toggle plate; 25. a first driving motor; 26. a drive gear; 3. a blanking unit; 31. a guide tube; 32. a dispersing member; 321. a dispersion plate; 322. an auxiliary spring; 323. a barrier film; 33. breaking a scattering rod; 34. screening net; 35. triangular protrusions; 4. a collection unit; 41. a collection frame; 411. a support column; 412. a separation hole; 413. a support rod; 42. a second driving motor; 43. a vibrating member; 431. a rotating block; 432. an L-shaped rod; 433. connecting the counter bores; 434. a lifting rod; 435. a support spring; 44. a conical screening plate; 45. arc-shaped bulges; 46. a separation member; 461. a hydraulic push rod; 462. a circular plate; 463. a round bar; 464. a round tube; 47. a conical ring plate; 48. a material blocking cover; 49. and rotating the ring.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1, 3 and 4, a discharging and screening device for an intelligent coal mill comprises a supporting frame 1 which is distributed in a bilateral symmetry manner.
Referring to fig. 1,2 and 5, the discharging and screening device for the intelligent coal mill further comprises a feeding unit 2, the feeding unit 2 is arranged between the two supporting frames 1, the feeding unit 2 comprises a cylindrical frame 21 arranged between the two supporting frames 1, a conical protrusion 22 is arranged at the upper end of the bottom wall of the cylindrical frame 21, a plurality of blanking holes 23 which are uniformly distributed in the circumferential direction are formed in the conical protrusion 22, the blanking holes 23 penetrate through the bottom wall of the cylindrical frame 21, and the top wall of the cylindrical frame 21 is connected with a feeding component 24.
Referring to fig. 1 and 7, the feeding unit 2 further includes a first driving motor 25 mounted at the upper end of the cylindrical frame 21, and a driving gear 26 is fixedly connected to an output shaft of the first driving motor 25, and the driving gear 26 is rotatably connected to the upper end of the cylindrical frame 21.
Referring to fig. 5 and 7, the feeding member 24 includes a Z-shaped tube 241 penetrating through and rotatably connected to the top wall of the cylindrical frame 21, a driven gear 242 is mounted at the upper end of the Z-shaped tube 241, the driven gear 242 is meshed with the driving gear 26, a feeding tube 243 is inserted into the upper end of the Z-shaped tube 241, and a toggle plate 244 matched with the circumferential surface of the conical protrusion 22 is mounted on the outer surface of the lower end of the Z-shaped tube 241.
Specifically during operation, hang support frame 1 to working position through current loop wheel machine, two support frames 1 drive cylindricality frame 21 and remove, cylindricality frame 21 drives inlet pipe 243 and removes to the coal pulverizer discharge gate under, during the screening, start first driving motor 25, first driving motor 25 drives driving gear 26 rotation, driving gear 26 drives driven gear 242 and rotates, driven gear 242 drives Z type pipe 241 and inlet pipe 243 rotation, coal pulverizer discharge gate exhaust buggy falls to in the inlet pipe 243, the buggy in the inlet pipe 243 falls to in the Z type pipe 241, along with the rotation of Z type pipe 241, Z type pipe 241 lower extreme exhaust buggy passes through a plurality of blanking holes 23 in proper order, and discharge from a plurality of blanking holes 23, simultaneously the Z type pipe 241 also can discharge the buggy to the toper protruding 22 on, toper protruding 22 makes things convenient for buggy to the bottom removal of cylindricality frame 21, the Z type pipe 241 of rotation drives stirring board 244 rotation, stirring board 244 carries out the extrusion to the buggy that remains on the toper protruding 22, make it fall from a plurality of holes 23, thereby realize the function of blanking mouth exhaust buggy and the intensive screening phenomenon of the big amount of buggy that the intensive screening appears when avoiding to take place.
Referring to fig. 1, fig. 5, fig. 6 and fig. 8, this a discharging screening device for intelligent coal mill still includes blanking unit 3, blanking unit 3 circumference evenly is provided with a plurality of and installs the cylindricality frame 21 lower extreme, blanking unit 3 include with blanking hole 23 intercommunication and with cylindricality frame 21 lower extreme fixed connection's guide tube 31, guide tube 31 is the V type and its lower extreme is drawn close to cylindricality frame 21 vertical axis, the position that guide tube 31 inside is close to cylindricality frame 21 is connected with a plurality of from top to bottom evenly distributed's dispersion part 32, a plurality of horizontal evenly distributed's broken loose pole 33 are installed to guide tube 31 corner, screening net 34 is installed to the one end lower frame wall that the cylindricality frame 21 was kept away from to guide tube 31, the one end that the screening net 34 kept away from the cylindricality frame 31 corner is provided with two triangular bulge 35, triangular bulge 35 and guide tube 31 surface fixed connection.
Referring to fig. 5 and 7, the dispersing member 32 includes a dispersing plate 321 rotatably coupled to the inner wall of the guide tube 31, an auxiliary spring 322 is installed between the lower end of the dispersing plate 321 and the inner wall of the guide tube 31, and the dispersing member 32 further includes a barrier film 323 coupled between the lower end of the dispersing plate 321 and the inner wall of the guide tube 31.
In particular, when the coal dust falls into the guide pipes 31 from the blanking holes 23, the coal dust contacts with the dispersing plates 321 in turn, impact force and gravity are applied to the dispersing plates 321 when the coal dust falls onto the dispersing plates 321, the auxiliary springs 322 are arranged to enable the dispersing plates 321 to rebound under the action of resilience force, the dispersing plates 321 are in dynamic shaking, impact force generated when the coal dust falls onto the dispersing plates 321 disperses the coal dust which is agglomerated after grinding or is not completely separated, the dispersing plates 321 in dynamic shaking also play a role of dispersing the coal dust, a foundation is laid for subsequent full and rapid screening by carrying out dispersion treatment on the coal dust before screening, the efficiency of subsequent screening is improved, the separation membrane 323 separates the space between the dispersing plates 321 and the inner wall of the guide pipes 31, the coal dust is prevented from remaining between the dispersing plates 321 and the inner wall of the guide tube 31, the coal dust enters the corners of the guide tube 31 after passing through the dispersing plates 321 to be contacted with the dispersing rods 33 and generate impact force, so that the coal dust is further dispersed, the dispersed coal dust moves downwards and falls to the upper end of the screening net 34, the screening net 34 screens the dispersed coal dust, the coal dust conforming to the size moves downwards through the screening net 34, the coal dust which does not meet the required size moves towards the axis direction of the cylindrical frame 21 along the screening net 34 and moves out of the guide tube 31, the guide tubes 31 and the screening net 34 work cooperatively, and the discharging operation of the guide tubes 31 has time difference, so that the function of carrying out multiple groups of small-amount screening on a large amount of coal dust is realized, the screening effect of the large amount of coal dust is effectively improved, and the condition that the screening of the large amount of coal dust is incomplete is avoided.
Referring to fig. 5-7, the discharging and screening device for the intelligent coal mill further comprises a collecting unit 4, the collecting unit 4 is arranged below the cylindrical frame 21, the collecting unit 4 comprises a collecting frame 41 fixedly connected with the lower ends of the two supporting frames 1, a plurality of evenly distributed supporting columns 411 are arranged at the lower ends of the collecting frame 41, a second driving motor 42 is arranged in the collecting frame 41, a vibration part 43 is arranged on an output shaft of the second driving motor 42, an inverted conical screening plate 44 is arranged at the upper end of the vibration part 43, a discharging hole is formed in the middle of the conical screening plate 44, a plurality of arc-shaped protrusions 45 evenly distributed circumferentially are arranged at positions, far away from the axis, of the inner annular surface of the conical screening plate 44, separation parts 46 are slidably connected at the middle of the conical screening plate 44, and the separation parts 46 are fixedly connected with the lower ends of the cylindrical frame 21.
Referring to fig. 7, a separation hole 412 is formed in the middle of the bottom wall of the collection frame 41, a support rod 413 is mounted in the middle of the separation hole 412, and the support rod 413 is fixedly connected with the second driving motor 42.
Referring to fig. 7, the collecting unit 4 further includes a conical ring plate 47 mounted at the lower end of the conical screening plate 44, a material blocking cover 48 is mounted at the lower end of the conical ring plate 47, the material blocking cover 48 is made of rubber, a rotating ring 49 is mounted at the lower end of the material blocking cover 48, and the rotating ring 49 is rotatably connected with the inner wall of the separation hole 412.
During concrete working, when two support frames 1 move, two support frames 1 drive and collect frame 41 and move to the working position, a plurality of support columns 411 of collection frame 41 lower extreme support collection frame 41, during screening, start first second driving motor 42, second driving motor 42 drives vibrations part 43 rotation, vibrations part 43 drives toper screening board 44 and rotates, restart the row material of first driving motor 25 and coal pulverizer discharge gate afterwards, in screening process, pivoted toper screening board 44 drives a plurality of arc protruding 45 rotations, a plurality of arc protruding 45 contact with two triangle protruding 35 of guide tube 31 lower extreme in proper order, after arc protruding 45 contacts with triangle protruding 35, triangle protruding 35 extrudes arc protruding 45, arc protruding 45 drives toper screening board 44 downwardly moving and compresses vibrations part 43, after arc protruding 45 continues to rotate and separate with triangle protruding 35, the vibrations part 43 that receives the extrusion resets and drive arc protruding 45 and strike guide tube 31 lower extreme through toper screening board 44, realize the vibration function of guide tube 31, a plurality of pivoted arc protruding 45 and triangle protruding 35 cooperate and a plurality of triangle protruding 35 realize that a plurality of guide tubes are continuous to shake the net, realize the continuous function of vibration net along the guide tube 31 is realized to the slope again, and the realization of the vibration net is realized to the vibration net is continuous to the realization, and the vibration net is carried out to the vibration net 31 is convenient to the realization is carried out to the vibration net is separated to the more than the vibration net 31. Meanwhile, the reset of the vibration part 43 is matched with the reaction force generated by the arc-shaped bulge 45 knocking the guide pipe 31, so that vibration of the conical screening plate 44 is realized, when the pulverized coal passes through the screening net 34, the pulverized coal conforming to the size falls into the collecting frame 41 from the screening net, and the conical ring plate 47 is matched with the blocking cover 48, so that the pulverized coal conforming to the size is prevented from being discharged from the separation hole 412. Pulverized coal not conforming to the required size is discharged from the lower end of the guide pipe 31 and falls onto the conical screening plate 44, and the vibrating conical screening plate 44 again performs vibration dispersion and screening on the pulverized coal, so that part of the pulverized coal not conforming to the required size is dispersed and crushed and shaken off to be discharged, and then pulverized coal still not conforming to the required size is intensively moved to the middle part of the conical screening plate 44 along the inclined surface of the conical screening plate 44.
Referring to fig. 7 and 9, the vibration component 43 includes a rotating block 431 mounted on an output shaft of the second driving motor 42, a plurality of L-shaped rods 432 uniformly distributed in circumferential direction are mounted on an outer ring surface of the rotating block 431, a horizontal section of each L-shaped rod 432 penetrates through the material blocking cover 48, a connecting counter bore 433 is formed at an upper end of a vertical section of each L-shaped rod 432, a lifting rod 434 is slidably connected in the connecting counter bore 433, a supporting spring 435 is mounted between the lifting rod 434 and an inner bottom wall of the corresponding connecting counter bore 433, and an upper end of the lifting rod 434 is fixedly connected with the conical screening plate 44.
Specifically during operation, when screening, the second driving motor 42 drives the rotating block 431 to rotate, the rotating block 431 drives the plurality of L-shaped rods 432 to rotate, the plurality of L-shaped rods 432 drive the plurality of lifting rods 434 to rotate, the plurality of lifting rods 434 drive the conical screening plate 44 to rotate, the conical screening plate 44 drives the conical ring plate 47 to rotate, simultaneously the conical ring plate 47 and the plurality of L-shaped rods 432 jointly drive the material blocking cover 48 to rotate, the material blocking cover 48 rotates inside the collecting frame 41 through the rotating ring 49, when the conical screening plate 44 drives the arc-shaped protrusions 45 to contact with the triangular protrusions 35, the triangular protrusions 35 squeeze the arc-shaped protrusions 45, the arc-shaped protrusions 45 push the conical screening plate 44, the conical screening plate 44 pushes the plurality of lifting rods 434 and extrudes the plurality of supporting springs 435, then the arc-shaped protrusions 45 are separated from the triangular protrusions 35, the extruded plurality of supporting springs 435 reset and drive the plurality of lifting rods 434 to reset the conical screening plate 44, and the reset conical screening plate 44 drives the arc-shaped protrusions 45 to knock the guide tube 31, thereby realizing the common function of the guide tube 31 and the conical screening plate 44, the phenomenon of blocking the screen 34 and the coal dust is avoided.
Referring to fig. 9, the separating unit 46 includes a hydraulic ram 461 mounted at the lower end of the cylindrical frame 21, a circular plate 462 mounted at the lower end of the hydraulic ram 461, a plurality of round bars 463 uniformly distributed circumferentially mounted at the lower end of the circular plate 462, and a plurality of round tubes 464 mounted at the lower ends of the round bars 463 together, wherein the round tubes 464 are rotatably connected with the conical screening plate 44 and the round tubes 464 are simultaneously slidably connected with the conical screening plate 44.
During specific operation, the lower end of the round tube 464 is flush with the lower end of the middle part of the conical screening plate 44 at first, thereby blocking the discharge hole in the middle part of the conical screening plate 44, in the time between two discharges of the coal mill, the hydraulic push rod 461 is started, the round plate 462 is driven to move downwards by the hydraulic push rod 461, the round plate 462 drives the round tube 464 to move downwards by the round rods 463, the upper end of the round tube 464 is flush with the lower end of the middle part of the conical screening plate 44, the accumulated non-size pulverized coal enters the inside of the round tube 464 through the interval between the round rods 463 and falls from the lower end of the round tube 464, the non-size pulverized coal is separated from the collecting frame 41 through the separating hole 412 in the bottom wall of the collecting frame 41, thereby realizing the separation function of the non-size pulverized coal and the size pulverized coal, and then the hydraulic push rod 461 drives the round tube 464 to reset upwards by the round plate 462 and the round rods 463. Because the conical ring plate 47 is matched with the material blocking cover 48, the coal powder conforming to the size cannot be discharged from the separation holes 412, so that the operation of taking out the coal powder conforming to the size and then discharging the coal powder not conforming to the size after single coal powder screening is not required to be repeatedly implemented before the amount of the coal powder stored in the collecting frame 41 reaches the rated amount, the screening process is reduced, and the overall screening efficiency is improved.
In the description of the embodiments of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The embodiments of the present invention are all preferred embodiments of the present invention, and are not limited in scope by the present invention, so that all equivalent changes according to the structure, shape and principle of the present invention are covered in the scope of the present invention.
Claims (7)
1. A ejection of compact screening plant for intelligent coal pulverizer, including bilateral symmetry's support frame (1), its characterized in that:
The feeding unit (2) is arranged between the two supporting frames (1), the feeding unit (2) comprises a cylindrical frame (21) arranged between the two supporting frames (1), a conical bulge (22) is arranged at the upper end of the bottom wall of the cylindrical frame (21), a plurality of blanking holes (23) which are uniformly distributed in the circumferential direction are formed in the conical bulge (22), the blanking holes (23) penetrate through the bottom wall of the cylindrical frame (21), and the top wall of the cylindrical frame (21) is connected with a feeding part (24);
The blanking unit (3) is circumferentially and uniformly provided with a plurality of dispersing components (32) which are uniformly distributed from top to bottom, the lower end of the cylindrical frame (21) is provided with a plurality of dispersing rods (33) which are uniformly distributed horizontally, the lower frame wall of one end of the guide tube (31) far away from the cylindrical frame (21) is provided with a screening net (34);
the dispersing component (32) comprises a dispersing plate (321) rotatably connected to the inner wall of the guide pipe (31), and an auxiliary spring (322) is arranged between the lower end of the dispersing plate (321) and the inner wall of the guide pipe (31);
The collecting unit (4) is arranged below the cylindrical frame (21), the collecting unit (4) comprises an inverted conical screening plate (44) which is arranged right below the cylindrical frame (21), and the lower end of the guide pipe (31) is arranged above the conical screening plate (44);
The feeding component (24) comprises a Z-shaped pipe (241) which penetrates through the top wall of the cylindrical frame (21) and is rotationally connected with the top wall of the cylindrical frame (21), a driven gear (242) is arranged at the upper end of the Z-shaped pipe (241), the driven gear (242) is meshed with the driving gear (26), a feeding pipe (243) is inserted at the upper end of the Z-shaped pipe (241), and a stirring plate (244) matched with the circumferential surface of the conical bulge (22) is arranged on the outer surface of the lower end of the Z-shaped pipe (241); the pulverized coal discharged from the lower end of the Z-shaped pipe (241) sequentially passes through the blanking holes (23) and is discharged from the blanking holes (23), so that the pulverized coal discharged from the discharge port of the coal mill is subjected to component;
The collecting unit (4) further comprises a collecting frame (41) fixedly connected with the lower ends of the two supporting frames (1), a second driving motor (42) is arranged in the collecting frame (41), a vibrating part (43) is arranged on an output shaft of the second driving motor (42), the upper end of the vibrating part (43) is fixedly connected with a conical screening plate (44), a separating part (46) is slidably connected with the middle part of the conical screening plate (44), and the separating part (46) is fixedly connected with the lower end of the cylindrical frame (21);
Two triangular bulges (35) are arranged at one end, far away from the corner of the guide pipe (31), of the screening net (34), the triangular bulges (35) are fixedly connected with the outer wall of the guide pipe (31), and a plurality of arc-shaped bulges (45) which are uniformly distributed in the circumferential direction are arranged at the position, far away from the axis, of the inner annular surface of the conical screening plate (44);
The arc-shaped protrusions (45) capable of rotating continuously cooperate with the triangular protrusions (35) to achieve the function of continuously vibrating the guide tubes (31), so that the function of vibrating the screening nets (34) is achieved, and meanwhile, the reset of the vibrating part (43) cooperates with the reaction force generated when the arc-shaped protrusions (45) strike the guide tubes (31) together to achieve vibration of the conical screening plates (44).
2. The discharge screening device for an intelligent coal pulverizer as recited in claim 1, wherein: the feeding unit (2) further comprises a first driving motor (25) arranged at the upper end of the cylindrical frame (21), a driving gear (26) is fixedly connected to an output shaft of the first driving motor (25), and the driving gear (26) is rotatably connected with the upper end of the cylindrical frame (21).
3. The discharge screening device for an intelligent coal pulverizer as recited in claim 1, wherein: the conical screening plate (44) is characterized in that a conical ring plate (47) is arranged at the lower end of the conical ring plate (47), a material blocking cover (48) is arranged at the lower end of the conical ring plate (47), a rotating ring (49) is arranged at the lower end of the material blocking cover (48), and the rotating ring (49) is rotationally connected with the bottom wall of the collecting frame (41).
4. A discharge screening device for an intelligent coal pulverizer as in claim 3, wherein: the vibration part (43) comprises a rotating block (431) arranged on an output shaft of the second driving motor (42), a plurality of L-shaped rods (432) which are uniformly distributed in the circumferential direction are arranged on the outer ring surface of the rotating block (431), a horizontal section of each L-shaped rod (432) penetrates through a material blocking cover (48), a connecting counter bore (433) is formed in the upper end of a vertical section of each L-shaped rod (432), a lifting rod (434) is connected in the corresponding connecting counter bore (433) in a sliding mode, a supporting spring (435) is arranged between the lifting rod (434) and the inner bottom wall of the corresponding connecting counter bore (433), and the upper end of each lifting rod (434) is fixedly connected with a conical screening plate (44).
5. The discharge screening device for an intelligent coal pulverizer as recited in claim 1, wherein: the separating component (46) comprises a hydraulic push rod (461) arranged at the lower end of the cylindrical frame (21), a circular plate (462) is arranged at the lower end of the hydraulic push rod (461), a plurality of round rods (463) which are uniformly distributed in the circumferential direction are arranged at the lower end of the circular plate (462), round pipes (464) are jointly arranged at the lower ends of the round rods (463), the round pipes (464) are rotationally connected with the conical screening plates (44), and the round pipes (464) are simultaneously in sliding connection with the conical screening plates (44).
6. A discharge screening device for an intelligent coal pulverizer as in claim 3, wherein: a plurality of evenly distributed support columns (411) are arranged at the lower end of the collecting frame (41), a separation hole (412) is formed in the middle of the bottom wall of the collecting frame (41), the separation hole (412) is rotationally connected with a rotating ring (49), a support rod (413) is arranged in the middle of the separation hole (412), and the support rod (413) is fixedly connected with a second driving motor (42).
7. The discharge screening device for an intelligent coal pulverizer as recited in claim 1, wherein: the dispersing member (32) further comprises a barrier film (323) connected between the lower end of the dispersing plate (321) and the inner wall of the guide tube (31).
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| CN202410323338.4A CN117920442B (en) | 2024-03-21 | 2024-03-21 | A ejection of compact screening plant for intelligent coal pulverizer |
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| CN202410323338.4A CN117920442B (en) | 2024-03-21 | 2024-03-21 | A ejection of compact screening plant for intelligent coal pulverizer |
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| CN117920442A (en) | 2024-04-26 |
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