CN216728261U - Vibratory screening and grading device for green mine raw coal - Google Patents
Vibratory screening and grading device for green mine raw coal Download PDFInfo
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- CN216728261U CN216728261U CN202123226522.8U CN202123226522U CN216728261U CN 216728261 U CN216728261 U CN 216728261U CN 202123226522 U CN202123226522 U CN 202123226522U CN 216728261 U CN216728261 U CN 216728261U
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Abstract
The utility model discloses a vibratory screening grading plant of green mine raw coal, including frame, screen cloth and vibration source, the screen frame is installed in the frame, and the screen cloth is fixed to be installed in the screen frame, and the screen frame slope sets up, and the higher one end of screen frame is provided with the feed inlet, and the lower one end of screen frame is provided with the discharge gate, the screen cloth is provided with two-layer, and the sieve mesh diameter of upper screen cloth is greater than the sieve mesh diameter of lower floor's screen cloth, and lower floor's screen cloth is higher than the bottom plate of screen frame; the discharging port is provided with a door stop component and a discharging box, the door stop component is arranged at the lower end of the screen body and comprises a lifting door, the lifting door vertically penetrates through the upper layer screen and the lower layer screen, and the discharging box is fixed at the discharging port of the screen body; the lifting door is fixed with a rack along the height direction, the discharging box is connected with a rotating shaft through a support in a rotating mode, and a gear is fixedly mounted on the rotating shaft and meshed with the rack. The utility model discloses can solve current raw coal screening plant and sieve the ejection of compact after accomplishing and collect inconvenient problem.
Description
Technical Field
The utility model relates to a coal production technical field especially relates to a vibratory screening grading plant of green mine raw coal.
Background
The raw coal is produced from coal mines, which is not washed, screened and processed but only manually picked to remove gangue and sundries. The raw coal is delivered from a coal powder furnace, the coal powder is large in size, and impurities such as stones and iron blocks are mixed with the raw coal, the raw coal needs to be treated and then delivered to a coal hopper in front of the furnace, the raw coal treatment comprises the steps of crushing, screening, magnetic separation and the like, and the coal powder furnace needs to be ground.
When the coal briquette is large and does not meet the combustion requirement of a boiler, the coal needs to be crushed by using a crusher, and the coal needs to be sieved before entering the crusher so as to reduce unnecessary load of a coal crushing device. If the particle size of the coal under the screen meets the requirement, the coal does not need to be crushed; if the particle size of the coal on the screen is larger than the feeding requirement of the coal crusher, the coal cannot enter the coal crusher.
The existing screening device can only screen raw coal blocks, the screened coal blocks with different particle sizes are discharged simultaneously, and the classified collection is inconvenient, so that the raw coal screening work is influenced.
Disclosure of Invention
An object of the utility model is to provide a vibratory screening grading plant of green mine raw coal for solve current raw coal screening plant and sieve the inconvenient problem of ejection of compact collection after accomplishing.
In order to solve the problem, the utility model adopts the following technical scheme:
a vibration screening and grading device for green mine raw coal comprises a rack, a screen body, a screen mesh and a vibration source, wherein the screen body is arranged on the rack, the screen mesh is fixedly arranged in the screen body, the screen body is obliquely arranged, a feed inlet is formed in the higher end of the screen body, a discharge outlet is formed in the lower end of the screen body, the screen mesh is provided with two layers, namely an upper layer screen mesh and a lower layer screen mesh, the diameter of a sieve mesh of the upper layer screen mesh is larger than that of the sieve mesh of the lower layer screen mesh, the lower layer screen mesh is higher than a bottom plate of the screen body, and the upper layer screen mesh, the lower layer screen mesh and the bottom plate of the screen body are parallel to each other;
the discharging port is provided with a door stop component and a discharging box, the door stop component is arranged at the lower end of the screen body and comprises a lifting door, the lifting door vertically penetrates through the upper layer screen and the lower layer screen, the discharging box is fixed at the discharging port of the screen body, three layers of material guide supporting plates are arranged in the discharging box, and the bottom plates of the upper layer screen, the lower layer screen and the screen body are respectively and fixedly connected with one layer of material guide supporting plate;
the lifting door is fixed with a rack along the height direction, the discharging box is connected with a rotating shaft through a support in a rotating mode, and a gear is fixedly mounted on the rotating shaft and meshed with the rack.
Optionally, the discharging box is further provided with a positioning block, the positioning block is provided with a first positioning hole, the lifting door is provided with a plurality of second positioning holes along the height direction, and the lifting door is fixed through a bolt penetrating through the first positioning hole and one of the second positioning holes.
Optionally, the direction that uses raw coal to remove is the preceding, all offers the opening that supplies the raw coal after grading to pass through on two lateral walls around the play workbin, still installs the pull board on the preceding lateral wall of play workbin.
Optionally, the screen body further comprises a dust cover, the dust cover being fixed over the top of the screen body.
Optionally, the screen body further comprises a left side plate, a right side plate and a rear side plate.
Optionally, a damping device is arranged between the screen body and the frame.
Optionally, a viewing window is installed on the side surface of the discharging box.
Optionally, a hand wheel is fixedly mounted at one end of the rotating shaft.
Adopt above-mentioned technical scheme, the utility model has the advantages of it is following:
the utility model can adjust the discharging of the raw coal through the lifting door after the raw coal is classified into three types of raw coal with different particle size specifications through the screen body, and separately collect the raw coal falling on the bottom plate of the screen body, the collected coal particle size meets the feeding requirement of the coal breaker, and the raw coal can enter the coal breaker to carry out the next working procedure without being crushed; and then, the height of the lifting door is adjusted, and raw coal left on the two layers of screens is collected respectively, so that the screening and collection are more targeted.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is the structure schematic diagram of the middle door shield assembly and the discharging box of the present invention.
Reference numerals are as follows: 1. the screen comprises a rack, 2, a screen body, 3, an upper screen, 4, a lower screen, 5, a vibration source, 6, a feed inlet, 7, a bottom plate of the screen body, 8, a discharge box, 9, a lifting door, 10, a guide supporting plate, 11, a support, 12, a rotating shaft, 13, a rack, 14, a gear, 15, a positioning block, 16, a first positioning hole, 17, a second positioning hole, 18, a bolt, 19, a drawing plate 20, a dust cover, 21, a damping device, 22, an observation window, 23 and a hand wheel.
Detailed Description
In order to make the technical purpose, technical solutions and advantageous effects of the present invention clearer, the technical solutions of the present invention are further described below with reference to fig. 1-2 and specific embodiments.
An embodiment of a vibratory screening and grading device for green mine raw coal comprises:
a vibration screening and grading device for green mine raw coal comprises a rack 1, a screen body 2, a screen mesh and a vibration source 5, wherein the screen body 2 is installed on the rack 1, the screen mesh is fixedly installed in the screen body 2, the vibration source 5 drives the screen body 2 to vibrate, the vibration source 5 can be a vibration exciter installed on the screen body 2, and can also drive an eccentric block to rotate through a motor so as to enable the screen body 2 to do directional jumping motion, the screen body 2 is obliquely arranged, a feed inlet 6 is formed in the higher end of the screen body 2, a discharge outlet is formed in the lower end of the screen body 2, the screen mesh is provided with two layers, namely an upper screen mesh 3 and a lower screen mesh 4, the screen mesh diameter of the upper screen mesh 3 is larger than that of the lower screen mesh 4, the lower screen mesh 4 is higher than a bottom plate 7 of the screen body, and the upper screen mesh 3, the lower screen mesh 4 and the bottom plate 7 of the screen body are parallel to each other; the material with the aperture smaller than that of the screen mesh falls to the lower layer through the screen holes to form undersize, the material with the aperture larger than that of the screen mesh is discharged from the discharge hole after continuous jumping,
a door stop component and a discharge box 8 are arranged at the discharge port, the door stop component is arranged at the lower end of the screen body 2, the door stop component comprises a lifting door 9, the lifting door 9 vertically penetrates through the upper screen 3 and the lower screen 4, the lifting door 9 is in sliding connection with the upper screen 3 and the lower screen 4, the discharge box 8 is fixed at the discharge port of the screen body 2, three layers of material guide supporting plates 10 are arranged in the discharge box 8, and the upper screen 3, the lower screen 4 and a bottom plate 7 of the screen body are respectively fixedly connected with one layer of material guide supporting plate 10;
a rack 13 is fixed on the lifting door 9 along the height direction, a rotating shaft 12 is rotatably connected to the discharging box 8 through a support 11, a gear 14 is fixedly mounted on the rotating shaft 12, and the gear 14 is meshed with the rack 13.
Further, as the utility model discloses a one of them embodiment still is provided with locating piece 15 on the play workbin 8, has seted up first locating hole 16 on the locating piece 15, has seted up a plurality of second locating holes 17 along the direction of height on the overhead door 9, and when adjusting the position of overhead door 9, overhead door 9 can fix a definite position through the bolt 18 that passes first locating hole 16 and one of them second locating hole 17.
Further, as the utility model discloses a one of them embodiment to the direction that the raw coal removed is preceding, all offers the opening that supplies the raw coal after hierarchical to pass through on two lateral walls around the play workbin 8, still installs pull board 19 on the preceding lateral wall of play workbin 8. An opening can be respectively arranged on the front side wall and the rear side wall of the discharge box 8, three openings can also be respectively arranged to correspond to three coal outlet channels, the drawing plate 19 is drawn out, the opening at the front side wall is opened, the drawing plate 19 is retracted, and the opening at the front side wall is closed.
Further, as one of the embodiments of the present invention, the screen body 2 further includes a dust cover 20, and the dust cover 20 is fixed above the top of the screen body 2. The dust loss in the vibration screening process can be reduced, and the pollution to the surrounding environment is avoided.
Further, as the utility model discloses a one of them embodiment, screen frame 2 still includes left side board, right side board and posterior lateral plate, and the steel sheet is all adopted to the material of left side board, right side board and posterior lateral plate, and intensity is high, can avoid the raw coal to run out screen frame 2.
Further, as one of the embodiments of the present invention, a damping device 21 is disposed between the screen body 2 and the frame 1. Damping device 21 includes bearing pin and spring holder, and the bearing pin is fixed on screen frame 2, and the spring holder is installed between bearing pin and frame 1, and the spring holder plays the cushioning effect.
Further, as the utility model discloses a one of them embodiment, the side-mounting of ejection of compact case 8 has observation window 22, can observe the state when ejection of compact case 8 of the raw coal after the grading, avoids blockking up in ejection of compact case 8.
Further, as one of the embodiments of the present invention, a hand wheel 23 is fixedly installed at one end of the rotating shaft 12. The rotating shaft 12 is rotated by rotating the hand wheel 23, so that the lifting door 9 is driven to lift through the gear 14 and the rack 13, and the closing of different layers is realized.
The utility model discloses during operation, after classifying the raw coal into three kinds of raw coal of different particle diameter specifications through screen frame 2, in screen frame 2 discharge gate department, adjust the ejection of compact of raw coal through overhead door 9, can make the bottom height of overhead door 9 keep unanimous with the height of lower floor's screen cloth 4, make the raw coal that falls on bottom plate 7 of screen frame collect through discharge gate and ejection of compact case 8 earlier, the coal particle diameter of collecting satisfies the coal breaker feeding requirement, need not to break and can enter the coal breaker and carry out the work of next process; and then, the height of the lifting door 9 is increased, the two coal outlet channels above are opened in sequence, and the classified raw coal is collected respectively, so that the screened raw coal can be collected in a targeted manner.
The above embodiments are not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification of the above embodiments.
Claims (8)
1. The utility model provides a vibratory screening grading plant of green mine raw coal, includes frame, screen cloth and vibration source, and the screen frame is installed in the frame, and screen cloth fixed mounting is in the screen frame, its characterized in that: the screen body is obliquely arranged, a feeding hole is formed in the higher end of the screen body, a discharging hole is formed in the lower end of the screen body, the screen bodies are provided with two layers which are respectively an upper layer screen and a lower layer screen, the diameter of the screen hole of the upper layer screen is larger than that of the screen hole of the lower layer screen, the lower layer screen is higher than the bottom plate of the screen body, and the upper layer screen, the lower layer screen and the bottom plate of the screen body are parallel to each other;
the discharging port is provided with a door stop component and a discharging box, the door stop component is arranged at the lower end of the screen body and comprises a lifting door, the lifting door vertically penetrates through the upper layer screen and the lower layer screen, the discharging box is fixed at the discharging port of the screen body, three layers of material guide supporting plates are arranged in the discharging box, and the bottom plates of the upper layer screen, the lower layer screen and the screen body are respectively and fixedly connected with one layer of material guide supporting plate;
the lifting door is fixed with a rack along the height direction, the discharging box is connected with a rotating shaft through a support in a rotating mode, and a gear is fixedly mounted on the rotating shaft and meshed with the rack.
2. The vibratory screening and classifying device for green mine raw coal according to claim 1, characterized in that: the discharging box is further provided with a positioning block, a first positioning hole is formed in the positioning block, a plurality of second positioning holes are formed in the lifting door in the height direction, and the lifting door is fixed through a bolt penetrating through the first positioning hole and one of the second positioning holes.
3. The vibratory screening and classifying device for green mine raw coal according to claim 1, characterized in that: the direction that uses raw coal to remove is preceding, all offers the opening that supplies the raw coal after grading to pass through on two lateral walls around the play workbin, still installs the pull board on the preceding lateral wall of play workbin.
4. The vibratory screening and classifying device for green mine raw coal according to claim 1, characterized in that: the screen frame still includes the dust cover, and the dust cover is fixed in the top of screen frame.
5. The vibratory screening and classifying device for green mine raw coal according to claim 1, characterized in that: the screen body also comprises a left side plate, a right side plate and a rear side plate.
6. The vibratory screening and classifying device for green mine raw coal according to claim 1, characterized in that: a damping device is arranged between the screen body and the frame.
7. The vibratory screening and classifying device for green mine raw coal according to claim 1, characterized in that: the side of the discharging box is provided with an observation window.
8. The vibratory screening and classifying device for green mine raw coal according to claim 1, characterized in that: a hand wheel is fixedly arranged at one end of the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123226522.8U CN216728261U (en) | 2021-12-21 | 2021-12-21 | Vibratory screening and grading device for green mine raw coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123226522.8U CN216728261U (en) | 2021-12-21 | 2021-12-21 | Vibratory screening and grading device for green mine raw coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216728261U true CN216728261U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123226522.8U Active CN216728261U (en) | 2021-12-21 | 2021-12-21 | Vibratory screening and grading device for green mine raw coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216728261U (en) |
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2021
- 2021-12-21 CN CN202123226522.8U patent/CN216728261U/en active Active
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