CN212468796U - Pelletizer discharge screening device - Google Patents
Pelletizer discharge screening device Download PDFInfo
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- CN212468796U CN212468796U CN202021025984.6U CN202021025984U CN212468796U CN 212468796 U CN212468796 U CN 212468796U CN 202021025984 U CN202021025984 U CN 202021025984U CN 212468796 U CN212468796 U CN 212468796U
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Abstract
The utility model discloses a pelletizer ejection of compact screening plant belongs to screening plant technical field. The utility model discloses well pelletizer discharge gate below is provided with the screening unit, the head below of screening unit is provided with the vibrator, the screening unit includes one-level screening unit and the second grade screening unit that from the top down set gradually, wherein one-level screening unit is including setting up the one-level screen cloth in the discharge gate below, second grade screening unit is including setting up the second grade screen cloth in the one-level screen cloth below, the equal downward sloping of afterbody of one-level screen cloth and second grade screen cloth extends, and the sieve mesh diameter of one-level screen cloth is greater than the sieve mesh diameter of second grade screen cloth. The utility model aims to overcome not carrying out the not enough of screening to the pelletizing size that the pelletizer came out in the current pelletizing production, provide a pelletizer ejection of compact screening plant, its simple structure, the maintenance of being convenient for can improve screening efficiency, and then improves the whole efficiency in the pelletizing production process.
Description
Technical Field
The utility model relates to a screening plant technical field, more specifically say, relate to a pelletizer ejection of compact screening plant.
Background
The cylindrical pelletizer has the advantages of simple structure, reliable equipment, stable operation, small maintenance workload, strong raw material adaptability and large single-machine yield. In the domestic metallurgical industry, a disc pelletizer is important equipment in the production process of pellets, the disc pelletizer is used for pelletizing iron ore powder, bentonite or other additives and iron ore concentrate powder are mixed and then conveyed to the disc pelletizer, and the mixture is sprayed with water and rolled in a disc to form pellets.
In the actual production of the existing disc pelletizer, the pelletizing quality is poor due to various reasons, and the yield of green pellets is low. In the pelletizing process of the existing pellets, the problems of inconsistent pelletizing quality and unbalanced pelletizing size exist in the existing pellets, and the sizes of the pellets are not screened in the existing disc pelletizing production, so that the stable continuous process of the subsequent industrial production is adversely affected. Therefore, the design of the pelletizing machine discharging and screening device with a simple structure for screening the sizes of the pellets discharged by the pelletizing machine is a target pursued in the industry all the time.
Through retrieval, a large number of patents have been published on pelletizer screening devices, such as chinese patent application No.: 2016111347876, the name of invention creation is: the application discloses a disc pelletizer with a screening device, which comprises a rack, a motor and a disc, wherein the motor is obliquely arranged on the rack, and an output shaft of the motor is rotationally connected with the disc through a speed reducer; wherein, the upper part of the disc is provided with a roller screen; the head end of the roller screen extends into the upper part of the disc, the tail end of the roller screen slightly inclines downwards, an oversize material chute and an undersize material chute are respectively arranged above and below the tail end of the roller screen, and the lower end of the undersize material chute is led into the lower part of the disc. The scheme is a good exploration for the pelletizer screening device, but the exploration for the pelletizer screening device in the industry is never stopped.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The utility model aims to overcome not carrying out the not enough of screening to the pelletizing size that the pelletizer came out in the current pelletizing production, provide a pelletizer ejection of compact screening plant, its simple structure, the maintenance of being convenient for can improve screening efficiency, and then improves the whole efficiency in the pelletizing production process.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a pelletizer ejection of compact screening plant, pelletizer discharge gate below is provided with the screening unit, the head below of screening unit is provided with the vibrator, the screening unit includes one-level screening unit and second grade screening unit that from the top down set gradually, wherein one-level screening unit is including setting up the one-level screen cloth in the discharge gate below, second grade screening unit is including setting up the second grade screen cloth in one-level screen cloth below, the equal downward sloping of afterbody of one-level screen cloth and second grade screen cloth extends, and the sieve mesh diameter of one-level screen cloth is greater than the sieve mesh diameter of second grade screen cloth.
As a further improvement, the pelletizer discharge port is provided with the pelletizer discharge unit, and the pelletizer discharge unit is including setting up the play flitch in pelletizer discharge port department, and the sectional area from the top down of play flitch reduces gradually, and goes out the flitch bilateral symmetry and is provided with the stock guide of downward sloping.
As a further improvement, the discharge plate tail is located above the one-level screen, the inner side of the one-level screen extends over the discharge plate tail, and the head and tail positions of the one-level screen extend over the guide plate positions on both sides of the discharge plate tail respectively.
As a further improvement, the one-level screening unit still keeps off the material curb plate including setting up the one-level in one-level screen cloth width direction both sides, and the one-level of both sides keeps off and is connected with the one-level between the material curb plate head and keeps off the material roof.
As a further improvement of the utility model, the included angle between the tail part of the first-level screen mesh and the horizontal plane is alpha, and the range of alpha is 15-30 degrees.
As a further improvement, the second grade screening unit still keeps off the material curb plate including setting up the second grade in second grade screen cloth width direction both sides, and the second grade of both sides keeps off and is connected with the second grade between the material curb plate head and keeps off the material roof.
As a further improvement of the utility model, the included angle between the tail part of the second grade screen mesh and the horizontal plane is beta, and the range of the beta is 45-70 degrees.
As a further improvement of the utility model, the head of the first-stage material-retaining side plate outside the first-stage screening unit is connected with the head of the second-stage material-retaining side plate outside the second-stage screening unit through a connecting part; the head of the first-stage material retaining side plate on the inner side of the first-stage screening unit is connected with the head of the second-stage material retaining side plate on the inner side of the second-stage screening unit through a connecting part.
As a further improvement, the second grade of the second grade screening unit outside keeps off material curb plate head and is provided with the fixed part, goes up the fixed part bottom and is provided with the vibrator.
As a further improvement, the one-level material retaining side plate on the inner side of the one-level screening unit and the two-level material retaining side plate on the inner side of the two-level screening unit are connected through a leakage-proof net.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) the utility model discloses a pelletizer ejection of compact screening plant, including one-level screen cloth and the second grade screen cloth that from the top down set gradually, and the sieve mesh diameter of one-level screen cloth is greater than the sieve mesh diameter of second grade screen cloth. The pelletizing that comes out from the balling disc falls first and screens on the one-level screen cloth, and the big pelletizing that is greater than the sieve mesh diameter of one-level screen cloth is directly along one-level screen cloth towards afterbody direction downstream discharge, and the pelletizing that is greater than the sieve mesh diameter of one-level screen cloth then passes the sieve mesh and falls into the second grade screen cloth of below and go forward further screening, because the sieve mesh of second grade screen cloth is less, can sieve off the pellet that does not conform to the requirement, and the pellet that sieves is followed the below discharge that passes the sieve mesh from the second grade screen cloth. Through two-stage screening, select out the qualified pelletizing of size, not only can improve screening efficiency, improve the overall efficiency in the pelletizing production process, can also provide the guarantee for the stable continuous process of follow-up industrial production.
(2) The utility model discloses a pelletizer ejection of compact screening plant, the second grade of second grade screening unit outside is kept off material curb plate head and is provided with the fixed part, goes up the fixed part bottom and is provided with the vibrator, and the vibrator drives the second grade screen cloth and vibrates, and then drives the one-level screen cloth in step and vibrate, is convenient for screen off unqualified pelletizing, improves the screening efficiency.
(3) The utility model discloses a pelletizer ejection of compact screening plant is provided with material recovery unit at the afterbody of one-level screen cloth, and the below of second grade screen cloth also is provided with material recovery unit, and the unqualified pelletizing of retrieving in the material recovery unit then carries to further pelletizing in the pelletizer through the lifting machine and handles, until forming qualified pelletizing, carries out repeated pelletizing to unqualified green pellet, not only can effectively utilize the material, reduction in production cost can also improve the whole efficiency of pelletizing production process.
(4) The utility model discloses a pelletizer ejection of compact screening plant, the degree of inclination of second grade screen cloth is greater than the one-level screen cloth, guarantees that the qualified pelletizing of selecting can discharge to the afterbody smoothly, and the second grade screen cloth is located one-level screen cloth below, can reduce screening plant's size, and screening plant simple structure, and construction cost and operation maintenance cost are low.
(5) The utility model discloses a pelletizer discharge screening device, the first grade of the inboard of first grade screening unit keeps off the material curb plate and links to each other through the leak protection net between the inboard second grade of second grade screening unit keeps off the material curb plate, prevents to spill from the inboard space of first grade screen cloth and second grade screen cloth from the qualified pelletizing that the first grade screen cloth sieve mesh leaked down, avoids causing the material waste, has improved production efficiency; meanwhile, the anti-leakage net is of a net structure, so that the small pellets falling on the anti-leakage net can be further screened, and the screening efficiency is further improved.
Drawings
Fig. 1 is the utility model discloses a pelletizer ejection of compact screening plant's schematic structure diagram.
The reference numerals in the schematic drawings illustrate:
100. a pelletizer discharge unit; 110. a discharge plate; 120. a material guide plate; 210. a primary screening unit; 211. a first-stage screen; 212. a first-stage material blocking side plate; 213. a first-stage material blocking top plate; 220. a secondary screening unit; 221. a secondary screen; 222. a secondary material blocking side plate; 223. a secondary material blocking top plate; 230. a vibrator; 240. an upper fixing portion; 250. a connecting portion; 260. a lower fixing portion; 261. a triangular fixing plate; 262. a support plate; 263. a support bar; 270. and (4) a leakage-proof net.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The present invention will be further described with reference to the following examples.
Example 1
As shown in fig. 1, the pelletizing machine discharge port of the pelletizing machine discharge screening device of the embodiment is provided with a screening unit below, a vibrator 230 is arranged below the head of the screening unit, and the vibrator 230 can drive the screening unit to vibrate up and down, so that pellets falling into the screening unit are subjected to vibratory screening, and the screening efficiency is improved. The screening unit includes one-level screening unit 210 and second grade screening unit 220 that from the top down set gradually, and wherein one-level screening unit 210 is including setting up the one-level screen cloth 211 in the discharge gate below, and second grade screening unit 220 is including setting up the second grade screen cloth 221 in one-level screen cloth 211 below, and the equal downward sloping of afterbody of one-level screen cloth 211 and second grade screen cloth 221 extends, and the sieve mesh diameter of one-level screen cloth 211 is greater than the sieve mesh diameter of second grade screen cloth 221. The pelletizing that comes out from the disc pelletizer falls first and screens on one-level screen cloth 211, the big pelletizing that is greater than the sieve mesh diameter of one-level screen cloth 211 directly discharges downwards towards the afterbody direction along one-level screen cloth 211, and the pelletizing that is greater than the sieve mesh diameter of one-level screen cloth 211 then passes the sieve mesh and falls into and further screens on the second grade screen cloth 221 of below, because the sieve mesh of second grade screen cloth 221 is less, can screen off the pellet that does not conform to the requirement, the pellet that screens off is discharged from the below of second grade screen cloth 221 from passing the sieve mesh, qualified pellet through the two-stage screening then discharges downwards towards the afterbody direction along second grade screen cloth 221, the afterbody of second grade screen cloth 221 is corresponding with the groove that connects of big micro-angle belt feeder, qualified carries out next process in sending into the chain grate through big micro-. Through two-stage screening, select out the qualified pelletizing of size, not only can improve screening efficiency, improve the overall efficiency in the pelletizing production process, can also provide the guarantee for the stable continuous process of follow-up industrial production. Because the general diameter scope of ball probe that forms in the balling disc is great, can produce the minimum diameter that surpasss qualified green pellet, the minimum diameter of maximum diameter and big pelletizing usually, and do not take reasonable effectual method to carry out the repetition balling to unqualified green pellet in the balling disc production of current, not only can lead to the material extravagant, influence the whole efficiency of balling disc production process. In this embodiment, the tail of the first-level screen 211 is provided with a material recovery device, the lower part of the second-level screen 221 is also provided with a material recovery device, the unqualified pellets recovered in the material recovery device are conveyed to a pelletizer through a lifter for further pelletizing treatment, and the pelletizing is repeated until qualified pellets are formed, so that the material can be effectively utilized, the production cost is reduced, and the overall efficiency of the pelletizing production process can be improved.
As shown in fig. 1, pelletizer discharge port department is provided with pelletizer discharge unit 100 in this embodiment, pelletizer discharge unit 100 is including setting up the play flitch 110 in pelletizer discharge port department, the sectional area from the top down of play flitch 110 reduces gradually, the width of going out flitch 110 reduces gradually along being close to discharge gate tip direction promptly, wherein the discharge end that goes out flitch 110 is located the top of one-level screen cloth 211, be convenient for arrange the pelletizing built in the pelletizer to the one-level screen cloth 211 below the play flitch 110 on, and the inboard extension of one-level screen cloth 211 exceeds the play flitch 110 afterbody, make one-level screen cloth 211 can accept the pelletizing of top play flitch 110 discharge completely, avoid causing the extravagant condition of pelletizing. In this embodiment, the two sides of the discharging plate 110 are symmetrically provided with the downwardly inclined material guiding plates 120, specifically, as shown in fig. 1, the left side of the discharging plate 110 is provided with the material guiding plates 120 inwardly and downwardly inclined, and the right side of the discharging plate 110 is also provided with the material guiding plates 120 inwardly and downwardly inclined, and the material guiding plates 120 are designed to further guide the pellets, so as to prevent the pellets from jumping out from the two sides of the discharging plate 110. Meanwhile, the head and the tail of the first-level screen 211 respectively extend beyond the positions of the material guide plates 120 on the two sides of the tail of the discharging plate 110, so that pellets produced in the pelletizer can completely fall onto the first-level screen 211, and the material waste is avoided.
In this embodiment, the primary screening unit 210 further includes primary material blocking side plates 212 disposed on two sides of the primary screen 211 in the width direction, and a primary material blocking top plate 213 is connected between heads of the primary material blocking side plates 212 on the two sides. Specifically, as shown in the orientation of fig. 1, the inside and outside of the first-level screen 211 are both provided with first-level material-blocking side plates 212, and the discharge end of the discharge plate 110 is located between the first-level material-blocking side plates 212 on the inside and outside, so as to ensure that pellets discharged from the pelletizer fall on the first-level screen 211. The included angle between the tail of the first-level screen 211 and the horizontal plane is alpha, the range of the alpha is 15-30 degrees, the first-level screen 211 is inclined at a small angle, unqualified large pellets can be slowly discharged along the first-level screen 211 on the one hand, on the other hand, the pellets discharged by the pelletizer are guaranteed to be fully contacted with the first-level screen 211, and the quality of primary screening is guaranteed. Specifically, α is 15 ° in the present embodiment.
In this embodiment, the secondary screening unit 220 further includes secondary material blocking side plates 222 disposed on two sides of the secondary screen 221 in the width direction, and a secondary material blocking top plate 223 is connected between heads of the secondary material blocking side plates 222 on the two sides. Specifically, as shown in fig. 1, two secondary material blocking side plates 222 are respectively disposed on the inner side and the outer side of the secondary screen 221, the primary screen 211 is located between the two secondary material blocking side plates 222 on the inner side and the outer side, an included angle between the tail of the secondary screen 221 and the horizontal plane is β, and the range of β is 45 ° to 70 °. Specifically, β in the present embodiment is 45 °. The inclination degree of the secondary screen 221 is greater than that of the primary screen 211, so that the screened qualified pellets can be smoothly discharged to the tail, and the secondary screen 221 is positioned below the primary screen 211, so that the size of the screening device can be reduced, the screening device is simple in structure, and the construction cost and the operation and maintenance cost are low.
In the embodiment, the head of the first-stage material blocking side plate 212 outside the first-stage screening unit 210 is connected with the head of the second-stage material blocking side plate 222 outside the second-stage screening unit 220 through the connecting part 250; the head of the primary striker side plate 212 inside the primary screening unit 210 is connected with the head of the secondary striker side plate 222 inside the secondary screening unit 220 through a connecting part 250. Second grade that the second grade in this embodiment was sieved unit 220 outside keeps off material curb plate 222 head and is provided with fixed part 240, goes up fixed part 240 bottom and is provided with vibrator 230, and vibrator 230 drives second grade screen cloth 221 and vibrates, and then drives one-level screen cloth 211 in step and vibrate, is convenient for screen off unqualified pellet, improves screening efficiency.
Example 2
This pelletizer ejection of compact screening plant of implementation, its structure is the same basically with embodiment 1, and further, link to each other through leak-proof net 270 between the inboard one-level of one-level screening unit 210 keeps off the material curb plate 212 and the inboard second grade of second grade screening unit 220 keeps off the material curb plate 222 in this embodiment, prevents to spill from the inboard space of one-level screen cloth 211 and second grade screen cloth 221 from the qualified pelletizing that the sieve mesh of one-level screen cloth 211 leaked down, avoids causing the material extravagant, has improved production efficiency. Meanwhile, the anti-leakage net 270 is of a net structure, so that small balls falling on the anti-leakage net 270 can be further screened, and the screening efficiency is further improved.
In this embodiment, both ends of the length direction of the second-stage screen 221 extend beyond both ends of the length direction of the first-stage screen 211, and both ends of the width direction of the second-stage screen 221 extend beyond both ends of the width direction of the first-stage screen 211, i.e., the size of the second-stage screen 221 is greater than that of the first-stage screen 211, so as to ensure that all pellets coming out of the first-stage screen 211 fall on the second-stage screen 221 for secondary screening. In this embodiment, the two sides of the tail portion of the secondary material blocking side plate 222 are provided with lower fixing portions 260, the bottom of the lower fixing portions 260 is fixed on the ground, wherein the lower fixing portions 260 include triangular fixing plates 261 connected to the two sides of the tail portion of the secondary material blocking side plate 222, the bottom planes of the triangular fixing plates 261 are fixed on the supporting plate 262, and the bottom of the supporting plate 262 is fixed on the ground through the supporting rod 263.
In this embodiment, the angle between the tail of the first-stage screen 211 and the horizontal plane is α, and α is 20 °.
In this embodiment, the angle between the tail of the secondary screen 221 and the horizontal plane is β, and β is 60 °.
Example 3
The discharging and screening device of the pelletizer has the same structure as that of the pelletizing machine in the embodiment 1, and the difference is that the included angle between the tail part of the first-stage screen 211 and the horizontal plane is alpha, and alpha is 30 degrees.
In this embodiment, the angle between the tail of the secondary screen 221 and the horizontal plane is β, and β is 70 °.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a pelletizer ejection of compact screening plant which characterized in that: pelletizer discharge gate below is provided with the screening unit, the head below of screening unit is provided with vibrator (230), the screening unit includes one-level screening unit (210) and second grade screening unit (220) that from the top down set gradually, wherein one-level screening unit (210) is including setting up one-level screen cloth (211) in the discharge gate below, second grade screening unit (220) is including setting up second grade screen cloth (221) in one-level screen cloth (211) below, the equal downward sloping of afterbody of one-level screen cloth (211) and second grade screen cloth (221) extends, and the sieve mesh diameter of one-level screen cloth (211) is greater than the sieve mesh diameter of second grade screen cloth (221).
2. The pelletizer discharge screening device as set forth in claim 1, wherein: the pelletizer discharge unit (100) is arranged at the pelletizer discharge opening, the pelletizer discharge unit (100) comprises a discharge plate (110) arranged at the pelletizer discharge opening, the sectional area of the discharge plate (110) is gradually reduced from top to bottom, and guide plates (120) inclined downwards are symmetrically arranged on two sides of the discharge plate (110).
3. The pelletizer discharge screening device as set forth in claim 2, wherein: the tail part of the discharge plate (110) is positioned above the first-stage screen mesh (211), the inner side of the first-stage screen mesh (211) extends over the tail part of the discharge plate (110), and the head part and the tail part of the first-stage screen mesh (211) respectively extend over the positions of the guide plates (120) on the two sides of the tail part of the discharge plate (110).
4. The pelletizer discharge screening device as set forth in claim 3, wherein: the primary screening unit (210) further comprises primary material blocking side plates (212) arranged on two sides of the width direction of the primary screen (211), and primary material blocking top plates (213) are connected between heads of the primary material blocking side plates (212) on the two sides.
5. The pelletizer discharge screening device as set forth in any one of claims 1-4, wherein: the included angle between the tail part of the first-stage screen mesh (211) and the horizontal plane is alpha, and the alpha ranges from 15 degrees to 30 degrees.
6. The pelletizer discharge screening device as set forth in claim 4, wherein: the secondary screening unit (220) further comprises secondary material blocking side plates (222) arranged on two sides of the secondary screen (221) in the width direction, and secondary material blocking top plates (223) are connected between heads of the secondary material blocking side plates (222) on the two sides.
7. The pelletizer discharge screening device as set forth in claim 6, wherein: the included angle between the tail part of the secondary screen (221) and the horizontal plane is beta, and the range of the beta is 45-70 degrees.
8. The pelletizer discharge screening device as set forth in claim 6, wherein: the head of a primary material blocking side plate (212) on the outer side of the primary screening unit (210) is connected with the head of a secondary material blocking side plate (222) on the outer side of the secondary screening unit (220) through a connecting part (250); the head of the primary material blocking side plate (212) on the inner side of the primary screening unit (210) is connected with the head of the secondary material blocking side plate (222) on the inner side of the secondary screening unit (220) through a connecting part (250).
9. The pelletizer discharge screening device as set forth in claim 6, wherein: an upper fixing part (240) is arranged at the head part of the secondary material blocking side plate (222) on the outer side of the secondary screening unit (220), and a vibrator (230) is arranged at the bottom of the upper fixing part (240).
10. The pelletizer discharge screening device as set forth in any one of claims 6-9, wherein: the primary material blocking side plate (212) on the inner side of the primary screening unit (210) is connected with the secondary material blocking side plate (222) on the inner side of the secondary screening unit (220) through a leakage-proof net (270).
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| CN202021025984.6U CN212468796U (en) | 2020-06-05 | 2020-06-05 | Pelletizer discharge screening device |
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| CN202021025984.6U CN212468796U (en) | 2020-06-05 | 2020-06-05 | Pelletizer discharge screening device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113637842A (en) * | 2021-08-16 | 2021-11-12 | 中南大学 | Double-layer pellet pelletizing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113637842A (en) * | 2021-08-16 | 2021-11-12 | 中南大学 | Double-layer pellet pelletizing system |
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