CN211678209U - Flotation clean coal breakage buffer device - Google Patents
Flotation clean coal breakage buffer device Download PDFInfo
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- CN211678209U CN211678209U CN202020125388.9U CN202020125388U CN211678209U CN 211678209 U CN211678209 U CN 211678209U CN 202020125388 U CN202020125388 U CN 202020125388U CN 211678209 U CN211678209 U CN 211678209U
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Abstract
Flotation clean coal breakage buffer belongs to the coal dressing equipment field. The utility model relates to a solve the problem that the flotation cleaned coal after the filter-pressing is big to the impact force of scraper conveyor. The utility model comprises a plurality of guide buffer bins and two mounting beams; the bin dividing plate and the side wall have the same shape; the arc edges at the two sides of the front curved wall and the rear curved wall are also quarter circles and correspond to the two side edges of the side wall; the two side walls, the front bending wall and the front bending wall form a guide buffer cavity, and the plurality of bin dividing plates and the two side walls are arranged in parallel in the guide buffer cavity to divide the guide buffer cavity into a plurality of dividing cavities; the two mounting beams are arranged right below the plate-and-frame filter press and right above the scraper conveyer along the length direction of the plate-and-frame filter press; a plurality of direction surge bins closely arrange in proper order along scraper conveyor's length direction and set up on two installation roof beams, constitute direction cushion chamber group. The method is mainly used for buffering the coal falling of the flotation clean coal.
Description
Technical Field
The utility model belongs to coal preparation equipment field, concretely relates to flotation clean coal breakage buffer.
Background
Coal plays an important role as an energy resource, and washing and selecting processing are required before the coal is used. In the coal washing process, the fine coal particles are generally sorted by depending on the flotation coal. In the process of flotation of coal, coal slurry of fine particles enters a flotation machine or a flotation tank, a bubble generating device in the flotation machine or the flotation tank generates a large amount of bubbles, coal slurry of fine particles floats to the upper layer of the flotation machine or the flotation tank under the action of a flotation reagent and the bubbles, separation is achieved through a scraper, and fine coal obtained by flotation still contains a large amount of moisture, so that filter pressing through a filter press is needed.
Coal preparation plants generally use plate and frame filters for filter pressing, and because the filter press can only remove most of liquid water, the coal slime after filter pressing still contains a large amount of water. Due to the relatively large amount of coal slurry obtained by flotation (relative to the transportation bureau for coal slurry) and the very high water content, the force of the filter-pressed coal slurry falling after being discharged from the plate and frame filter press is very large. Based on the condition that the water content of the coal slurry is very high (sometimes even in a fluid state) and the falling force is very large, because the belt conveyor is easy to damage a belt due to large impact force and is not suitable for conveying the coal slurry with high water content, the scraper conveyor is mainly adopted to realize the transportation of the coal slurry to a coal slurry storage yard at present.
Although the conveying track surface and the anchor chain of the scraper conveyor are of metal structures and can deal with the larger impact force of the coal slime with high water content, because the coal slime is discharged from the scraper conveyor by one plate frame, the coal slime of each plate frame can cause instant load increase for the machine head of the conveyor when contacting with the scraper conveyor, especially, each plate frame type filter press is provided with dozens of or even dozens of plate frames, each plate frame type filter press can cause dozens of or even dozens of instant load increase when discharging, and the motor of the machine head is very easy to damage. Simultaneously, leave certain clearance between scraper blade that scraper conveyor's anchor chain drove and the transport track face, but when the coal slime as unloading and scraper conveyor contact, can drop the scraper blade and press to transport the track face, cause the serious extrusion of the two, scraper blade and transport track face are just easy because wearing and tearing damage originally, and the damage process has been accelerated in the above-mentioned condition, aggravated the damage degree, and especially the veneer of coal slime is unloaded the quality and is big more, this kind of damage degree is big more, the dead time is fast more.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned problem, and then provide a flotation clean coal breakage buffer to reduce the flotation clean coal after the filter-pressing to the impact force of scraper conveyor, and then reduce the damage probability of scraper conveyor aircraft nose and transport track face, reduce the harm degree, improve life.
The flotation clean coal falling buffer device comprises a plurality of guide buffer bins and two mounting beams;
the guide buffer bin comprises two side walls, a front bent wall, a rear bent wall and a plurality of bin dividing plates; two sides of the side wall are arcs corresponding to the quarter circle, and the bin dividing plate and the side wall are the same in shape; the arc edges at the two sides of the front curved wall and the rear curved wall are also quarter circles and correspond to the two side edges of the side wall;
the two side walls, the front bending wall and the front bending wall form a guide buffer cavity, and the plurality of bin dividing plates and the two side walls are arranged in parallel in the guide buffer cavity to divide the guide buffer cavity into a plurality of dividing cavities;
the two mounting beams are arranged right below the plate-and-frame filter press and right above the scraper conveyer along the length direction of the plate-and-frame filter press; a plurality of direction surge bins closely arrange in proper order along scraper conveyor's length direction and set up on two installation roof beams, constitute direction cushion chamber group.
Has the advantages that:
the utility model reduces the impact force of the falling coal slime to the scraper conveyor to the maximum extent, reduces the damage degree and improves the service life; meanwhile, the situation that the instantaneous load of the nose of the conveyer is increased due to the unloading of the plate-and-frame filter press is avoided, the change of the instantaneous load of the nose of the conveyer is greatly reduced, and the motor damage probability of the nose is reduced.
Drawings
FIG. 1 is a schematic view of a part of a flotation clean coal falling buffer device;
FIG. 2 is a schematic view of a guide surge bin structure;
FIG. 3 is a schematic view of a feed port and a discharge port of a guide surge bin;
FIG. 4 is a schematic view of the installation position of the flotation clean coal falling coal buffering device in the working state;
FIG. 5 is a schematic view showing the distance between two side walls of the guide surge bin and the width dimension of the discharge chute opening of the plate and frame filter press;
FIG. 6 is a schematic view of the guide surge bin feed ports arranged closely in a vertical downward direction;
FIG. 7 is a schematic view showing the overlapped area of the vertical downward projection of the material inlet and the material outlet of the guide surge bin.
Detailed Description
The first embodiment is as follows: the present embodiment is described with reference to figures 1 to 2,
the embodiment is a flotation clean coal falling buffer device, which is arranged right below a plate and frame filter press and right above a scraper conveyor;
the flotation clean coal falling buffer device comprises a plurality of guide buffer bins 1 and two mounting beams 3;
the guide buffer bin 1 comprises two side walls 101, a front curved wall 102, a rear curved wall 103 and a plurality of bin dividing plates 104; two sides of the side wall are arcs corresponding to the quarter circle, and the bin dividing plate 104 and the side wall 101 are the same in shape; the arc edges at the two sides of the front curved wall and the rear curved wall are also quarter circles and correspond to the two side edges of the side wall;
the two side walls 101, the front curved wall 102 and the front curved wall 103 form a guide buffer cavity, and the plurality of bin dividing plates 104 are arranged in the guide buffer cavity in parallel with the two side walls to divide the guide buffer cavity into a plurality of separation cavities;
the two mounting beams 3 are arranged right below the plate and frame filter press and right above the scraper conveyor 501 along the length direction of the plate and frame filter press; a plurality of guide buffer bins 1 are sequentially and closely arranged on two mounting beams along the length direction of the scraper conveyor to form a guide buffer cavity group 10, as shown in fig. 4; the distance h between the two side walls of the guide surge bin is greater than the width d of the discharge chute 401 of the plate and frame filter press, as shown in fig. 5, to ensure that the flotation cleaned coal falls entirely within the range of the guide surge chamber group when falling after the filter press operation.
In vertical decurrent direction (in the overlooking direction of direction cushion chamber group), closely arranged direction surge bin presents latticedly because the existence of minute storehouse board, as shown in fig. 6, when the cleaned coal after the filter-pressing fell from board frame filter press discharge opening this moment, fell on closely arranged direction surge bin from perpendicular decurrent direction, because under the effect of surge bin lateral wall and minute storehouse board, break up into a plurality of pieces with the cleaned coal that the water content is higher (because the higher meeting of water content bonds together and forms a whole, the impact force is great when falling together), play the cushioning effect for the first time, the cleaned coal is broken up into the fritter simultaneously (the coal slime of cleaned coal is called the fritter under the bonding state), compare the massive coal slime before breaking up and say, the downward impact force has been reduced. The sub-bin plates in each guide buffer bin not only play a role in supporting and reinforcing ribs, but also play a role in scattering clean coal slime in a bonding state more importantly. When the small coal slime is further hit on the rear curved wall, the small coal slime not only plays a role of secondary buffering, but also further destroys the bonding effect, and the small coal slime is scattered, because the rear curved wall is curved, the further scattered coal slime slides down along the rear curved wall, because the arc edges at the two sides of the front curved wall and the rear curved wall are quarter circles, when the coal slime slides to the lowest end, the vertical downward speed is very small and almost zero, only a certain speed exists in the horizontal direction, and then the coal slime falls on the scraper conveyor, so that the impact force of the falling coal slime on the scraper conveyor is reduced to the maximum extent, the damage degree is reduced, and the service life is prolonged; meanwhile, the situation that the instantaneous load of the nose of the conveyer is increased due to the unloading of the plate-and-frame filter press is avoided, the change of the instantaneous load of the nose of the conveyer is greatly reduced, and the motor damage probability of the nose is reduced.
Because the utility model comprises a plurality of guide buffer bins, namely the utility model is of a split structure, after the guide buffer bins are worn for a long time, the damaged guide buffer bins can be directly disassembled and maintained, even can be directly replaced, and the long-time shutdown maintenance is not needed, thereby saving the production shutdown time, not influencing the production, and improving the yield and the benefit; meanwhile, the damaged guide buffer bin can be maintained, so that the production and maintenance cost is greatly saved for the overall structure; what's more, can dismantle, carry and install to single direction surge bin when the maintenance, compare wholly to dismantle, carry and install, not only very convenient, the material resources of using manpower sparingly that moreover can be very big.
The second embodiment is as follows: the present embodiment is described in connection with figure 3,
in the flotation clean coal falling buffer device according to the embodiment, each guide buffer bin 1 is provided with a bin separating plate 104.
Theoretically, the effect is better when the plurality of bin dividing plates are arranged, but in consideration of the cost and the maintenance condition, the bin dividing plate is preferably arranged in the guide buffer bin, so that the functions of supporting and reinforcing ribs can be realized, and the function of scattering coal slime can not be greatly influenced; and is easy to maintain during manufacture.
The other structures are the same as the first embodiment.
The third concrete implementation mode:
this embodiment flotation clean coal breakage buffer, two lateral walls of direction surge bin 1 on be equipped with connecting block 2 to set up on two installation roof beams through connecting block 2.
Other structures are the same as those of the first or second embodiment.
The fourth concrete implementation mode:
the flotation clean coal breakage buffer device of the embodiment is characterized in that a plurality of connecting block mounting grooves are formed in the mounting beam.
Thus, the guide buffer bins 1 can be sequentially and tightly arranged on the two mounting beams, and the guide buffer bins can be tightly contacted; meanwhile, the guide buffer bin is prevented from moving due to the impact effect of the clean coal slime.
The other structure is the same as that of the third embodiment.
The fifth concrete implementation mode: the present embodiment is described with reference to figures 3 and 7,
the flotation clean coal breakage buffer device of this embodiment, the pan feeding mouth 112 and the 113 areas of discharge gate of direction surge bin are the same, and the vertical downward projected overlap area of pan feeding mouth 112 and discharge gate 113 is less than or equal to 35% of pan feeding mouth area and is greater than 15% of pan feeding mouth area.
Therefore, even in the state of high water content of the clean coal slime, the clean coal slime can not block the guide buffer bin, and the guide buffer bin is easy to clean; meanwhile, the coal slime breaking and buffering functions of clean coal slime are better.
The other structure is the same as one of the first to fourth embodiments.
The sixth specific implementation mode:
in the flotation clean coal falling buffering device of the embodiment, the front curved wall 102 of the guide buffering bin 1 is provided with the hook 109, and the rear curved wall 103 is correspondingly provided with the hook groove.
Therefore, the adjacent two guide buffering bins are matched with the hook groove 109, so that the close contact of the adjacent two guide buffering bins can be further ensured, and the transverse displacement and the movement of the two guide buffering bins are avoided.
The other structure is the same as one of the first to fifth embodiments.
The seventh embodiment:
in the flotation clean coal falling buffering device according to the embodiment, the front curved wall 102 of the guide buffering bin 1 is provided with a hanging edge.
The hanging edge is a part of the edge of the upper edge of the front bending wall and is in a hook shape. Therefore, the rear guide buffer bin is hung on the rear curved wall of the front guide buffer bin along the hanging edge, and the close contact of the two adjacent guide buffer bins can be further ensured.
The other structure is the same as one of the first to fifth embodiments.
Claims (8)
1. The flotation clean coal falling buffer device is characterized by comprising a plurality of guide buffer bins (1) and two mounting beams (3);
the guide buffer bin (1) comprises two side walls (101), a front curved wall (102), a rear curved wall (103) and a plurality of bin dividing plates (104); two sides of the side wall are arcs corresponding to the quarter circle, and the bin dividing plate (104) and the side wall (101) are the same in shape; the arc edges at the two sides of the front curved wall and the rear curved wall are also quarter circles and correspond to the two side edges of the side wall;
the two side walls (101), the front bending wall (102) and the rear bending wall (103) form a guide buffer cavity, and a plurality of bin dividing plates (104) are arranged in the guide buffer cavity in parallel with the two side walls to divide the guide buffer cavity into a plurality of separated cavities;
the two mounting beams (3) are arranged right below the plate-and-frame filter press and right above the scraper conveyer along the length direction of the plate-and-frame filter press; a plurality of direction surge bins (1) closely arrange in proper order along scraper conveyor's length direction and set up on two installation roof beams, constitute direction cushion chamber group (10).
2. The flotation clean coal breakage buffer device according to claim 1, wherein the distance between the two side walls of the guide surge bin is greater than the width of the discharge chute of the plate and frame filter press.
3. The flotation clean coal breakage buffering device according to claim 2, characterized in that a bin dividing plate (104) is arranged in each guide buffering bin (1).
4. The flotation clean coal breakage buffering device according to claim 3, characterized in that the two side walls of the guide buffering bin (1) are provided with connecting blocks (2) and are arranged on the two mounting beams through the connecting blocks (2).
5. The flotation clean coal breakage buffering device as recited in claim 4, wherein a plurality of connecting block mounting grooves are formed in the mounting beam.
6. The flotation clean coal falling buffer device according to one of claims 1 to 5, wherein the areas of the feeding port (112) and the discharging port (113) of the guide buffer bin are the same, and the overlapping area of the vertical downward projection of the feeding port (112) and the discharging port (113) is less than or equal to 35% of the area of the feeding port and more than 15% of the area of the feeding port.
7. The flotation clean coal breakage buffering device according to claim 6, characterized in that the front curved wall (102) of the guide buffering bin (1) is provided with a hook (109), and the rear curved wall (103) is correspondingly provided with a hook groove.
8. The flotation clean coal breakage buffering device according to claim 6, characterized in that a hanging edge is provided on the front curved wall (102) of the guide surge bin (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020125388.9U CN211678209U (en) | 2020-01-19 | 2020-01-19 | Flotation clean coal breakage buffer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020125388.9U CN211678209U (en) | 2020-01-19 | 2020-01-19 | Flotation clean coal breakage buffer device |
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| Publication Number | Publication Date |
|---|---|
| CN211678209U true CN211678209U (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020125388.9U Active CN211678209U (en) | 2020-01-19 | 2020-01-19 | Flotation clean coal breakage buffer device |
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| CN (1) | CN211678209U (en) |
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2020
- 2020-01-19 CN CN202020125388.9U patent/CN211678209U/en active Active
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