CN209849262U - Small-size aggregate classified screening device that laboratory was used - Google Patents
Small-size aggregate classified screening device that laboratory was used Download PDFInfo
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- CN209849262U CN209849262U CN201920378776.5U CN201920378776U CN209849262U CN 209849262 U CN209849262 U CN 209849262U CN 201920378776 U CN201920378776 U CN 201920378776U CN 209849262 U CN209849262 U CN 209849262U
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Abstract
The utility model discloses a small aggregate classified screening device for laboratory, which belongs to the technical field of concrete processing, and is characterized in that the device comprises a screening mechanism and a vibrating mechanism arranged at the bottom of the screening mechanism, the screening mechanism comprises a screening hopper with an upper end opening and at least two screening tracks from top to bottom, the screening tracks are provided with a plurality of slideways along the length direction, and the slideways are vertically provided with screening holes in a penetrating way; the aperture size of the screening holes of each screening track is the same, and the aperture size of the screening holes on each screening track is gradually reduced along the direction far away from the screening hopper. The utility model discloses can improve screening speed and the accuracy to the aggregate greatly.
Description
Technical Field
The utility model belongs to the technical field of the concrete processing, more specifically say, it relates to a small-size aggregate classified screening device that laboratory was used.
Background
The raw materials for preparing the concrete comprise coarse aggregate and fine aggregate, and the high-performance concrete is formed by mixing large stones, medium stones and small stones in proportion, has excellent gradation and is in seamless connection with the size of the sand. Therefore, the fluidity can be improved to the maximum extent, the use amount of slurry and the abrasion to the wall of the pump pipe are reduced, and the fluidity and the compactness are improved after the grading of the aggregate is optimized. Continuous asphalt concrete mixing plants, limited by the regulations, cannot be used to mix aggregates that are "unstable in engineering material source or quality", and must use graded aggregates.
The existing natural-grade gravel has the phenomenon that particles are too large or too small due to poor quality of a material source, and if too large or too small particles are too large, the porosity of the prepared concrete is increased, the embedding force is small, the stability is poor, and the density is low. And when the mud content in the natural graded gravel is more than 10% of the weight of the sand, the mud can play a role of dividing the coarse aggregate, so that the embedding and extruding capacity among the aggregates is reduced, and the strength is poor. Meanwhile, the mud content is large, the liquid limit and the plasticity index are increased, the cement is softened when meeting water, the stability when meeting water is poor, and the strength is low. In addition, the aggregate obtained by crushing the waste concrete is recycled aggregate, but the quality of the recycled aggregate cannot be effectively guaranteed due to natural gradation, and the crushed recycled aggregate needs to be screened and classified and then manually mixed according to a certain proportion.
Chinese utility model patent application with publication number CN2693358 discloses a concrete aggregate screening machine, has the casing, is provided with banded spirochaeta in the casing, and banded spirochaeta is connected with the screen cloth section of thick bamboo, and banded spirochaeta is connected with actuating mechanism, and the feed end of casing is equipped with the feed inlet, and the lower part of casing is equipped with the fine sand export, and the tail end of casing is equipped with the coarse stone export.
However, the concrete aggregate screening machine can only screen two aggregates, namely fine sand and coarse stone, once operation, and at the moment, the precision is quite low, and the screening grade is low, so that a new technical scheme needs to be provided to improve the speed and the efficiency of aggregate screening.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a small-size aggregate classified screening device that laboratory was used can improve screening speed and the accuracy to the aggregate greatly.
In order to achieve the above purpose, the utility model provides a following technical scheme: a small aggregate classified screening device for a laboratory comprises a screening mechanism and a vibrating mechanism arranged at the bottom of the screening mechanism, wherein the screening mechanism sequentially comprises a screening hopper with an opening at the upper end and at least two screening rails from top to bottom, the screening rails are provided with a plurality of slide ways in an extending manner along the length direction of the screening rails, and the slide ways are vertically provided with screening holes in a penetrating manner; the aperture size of the screening holes of each screening track is the same, and the aperture size of the screening holes on each screening track is gradually reduced along the direction far away from the screening hopper.
Through adopting above-mentioned technical scheme, wait that the screening aggregate gets into the screening hopper to fall into corresponding screening track in proper order under the effect of vibrations mechanism, the vibration effect of simultaneously vibration mechanism can also make the aggregate along the orientation of seting up of slide on the orbital slide of corresponding screening move.
Many screening tracks superpose from top to bottom and set up in the below of screening hopper to along the numerical direction, the aperture size of the branch sieve mesh towards the direction screening hopper of keeping away from the screening hopper diminishes gradually. Aggregate with the particle size smaller than the aperture size of the sub-sieve holes falls into the screening track with the smaller aperture of the sub-sieve holes below for next screening, and the aggregate with different particle sizes is separated, so that the screening speed and accuracy of the aggregate are greatly improved.
The utility model discloses further set up to: a sub-sieve plate is horizontally arranged in the screening hopper, a pre-sieve hole is formed in the sub-sieve plate, and the aperture of the pre-sieve hole is equal to the maximum allowable particle size of the aggregate.
Through adopting above-mentioned technical scheme, treat that the screening aggregate gets into the screening hopper, the branch sieve plate of screening hopper can filter the too big aggregate of particle size earlier (the too big aggregate of particle size can directly be taken out by hand this moment, collect and pour into again and filter the processing in the screening hopper after the breakage), and the aggregate of particle size less than or equal to the biggest permissible particle size then accessible sieve mesh in advance, and fall into corresponding screening track, through the vibration of the vibrating mechanism of screening mechanism bottom, make the aggregate along the orientation motion of seting up of slide on the orbital slide of screening, thereby reach the purpose of prescreening, can effectively reduce too big aggregate and cause the inaccurate phenomenon of screening to take place at the sieving mechanism internal motion.
The utility model discloses further set up to: the screening track is provided with a feed opening along the length direction and in an inclined and downward manner towards the direction far away from the screening hopper, and the other three sides are provided with baffles.
Through adopting above-mentioned technical scheme, in the screening process, the setting of baffle can prevent effectively that the aggregate from being shaken out the phenomenon emergence outside the screening track for the aggregate can be along predetermined orbital motion, and is very convenient.
The utility model discloses further set up to: the feed opening is provided with a conveying mechanism.
Through adopting above-mentioned technical scheme, transport mechanism can be used to carry the aggregate of the different particle sizes that the screening obtained, has made things convenient for the transportation of different particle sizes aggregate.
The utility model discloses further set up to: each conveying mechanism is provided with a material collector at one end far away from the screening track.
By adopting the technical scheme, the collector can be used for temporarily storing the aggregates with different particle sizes conveyed by the conveying mechanism.
The utility model discloses further set up to: every the bottom of charge collector all is provided with the weighing and batching mechanism, and every weighing and batching mechanism's below all is provided with the unloading passageway, the unloading passageway slope sets up downwards, just the lowest below of unloading passageway is provided with the aggregate collecting box.
Through adopting above-mentioned technical scheme, wherein weigh the aggregate that the batching mechanism can obtain different particle diameters with the screening and weigh, reach certain weight back, transport mechanism stop work, release the aggregate of certain weight of temporary storage. Meanwhile, after the temporarily stored aggregates meet certain weight requirements, the aggregates can be released into the aggregate collecting box through the blanking channel, and the aggregates with different particle sizes are premixed in the aggregate collecting box according to a set proportioning proportion.
The utility model discloses further set up to: and a small particle collecting box is arranged below the screening holes of the screening rail of the screening mechanism farthest from the screening hopper.
Through adopting above-mentioned technical scheme, through screening many times, be less than the aggregate that minimum particle size required and material such as earth can fall into the tiny particle collecting box and collect, not only convenience very has but also reduced the pollution to the environment, has improved the environmental protection efficiency to the environment.
The utility model discloses further set up to: the feed opening of the screening track is detachably provided with a baffle used for blocking aggregate from sliding downwards too fast.
Because the screening track sets up in the slope, this moment under the effect of vibration mechanism, the aggregate very easily directly rolls and falls on corresponding conveying mechanism's conveyer belt, and further not drop downwards on next screening track, the accuracy when can influence the aggregate screening this moment, through adopting above-mentioned technical scheme, the setting at a distance from the baffle can effectively reduce the aggregate of undersize and take place because of the condition that the vibration falls on the conveying mechanism of last level, has improved the accuracy of screening.
The utility model discloses further set up to: the inner walls of the two baffle plates close to the discharge port are provided with U-shaped grooves, and the two ends of the separation baffle plates are respectively inserted into the corresponding U-shaped grooves.
Through adopting above-mentioned technical scheme, at first will separate the both ends of baffle and peg graft respectively in relative U type recess, separate the baffle this moment and can seal the screening track, from this the aggregate can not fall to transport mechanism's conveyer belt from above-mentioned feed opening on, only can carry out handsome branch processing under vibration mechanism's effect, treat the screening back of the aggregate of accomplishing in the screening hopper, manual rebound again separates the baffle, make the feed opening opened, the aggregate that lies in on different screening tracks this moment can drop on corresponding transport mechanism, thereby can reduce the condition emergence that the too little aggregate of particle diameter dropped on last one-level transport mechanism's conveyer belt.
To sum up, the utility model discloses following beneficial effect has:
1. the utility model can greatly improve the screening speed and accuracy of the aggregate;
2. optimally, the arrangement of the baffle can effectively prevent the aggregate from being vibrated out of the screening track, so that the aggregate can move along the preset track, and the screening track is very convenient;
3. optimized, the arrangement of the small particle collecting box is not only very convenient, but also reduces the pollution to the environment and improves the environmental protection efficiency to the environment.
Drawings
FIG. 1 is a schematic structural view of a small-sized aggregate classifying and screening apparatus for a laboratory;
fig. 2 is an enlarged view of a portion a in fig. 1.
Reference numerals: 1. a screening mechanism; 2. a vibration mechanism; 3. a screening hopper; 4. screening tracks; 5. separating the sieve plate; 6. pre-screening holes; 7. a slideway; 8. dividing sieve pores; 9. a transport mechanism; 10. a material collector; 12. a blanking channel; 13. an aggregate collection box; 14. a small particle collection box; 15. a frame; 16. a baffle plate; 17. a baffle plate; 18. u-shaped groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in FIG. 1, a small-sized aggregate classifying and screening device for a laboratory comprises a screening mechanism 1 and a vibrating mechanism 2 arranged at the bottom of the screening mechanism 1. The screening mechanism 1 comprises a screening hopper 3 with an opening at the upper end and four screening rails 4 from top to bottom in sequence; simultaneously still a branch sieve 5 of integrated into one piece in screening hopper 3, above-mentioned branch sieve 5 level sets up in screening hopper 3, and offers a plurality of circular sieve meshes 6 in advance that are equal to aggregate maximum allowable particle size on dividing sieve 5, and every sieve mesh 6 in advance is about 120mm in diameter. In addition, the equal parallel downward sloping stack of above-mentioned four screening tracks 4 sets up in the below of screening hopper 3, all sets up the slide 7 of a plurality of U types downwards along its length direction on every screening track 4, and vertically runs through on above-mentioned slide 7 and has seted up a plurality of minute sieve meshes 8, and a plurality of minute sieve meshes 8 on every slide 7 are equidistant to be distributed on unified slide 7 simultaneously. The aperture sizes of the sub-sieve holes 8 on the four sieving tracks 4 are gradually reduced downwards in sequence, and the aperture sizes are respectively set to be 80mm, 40mm, 20mm and 5 mm.
As shown in fig. 1, the vibration mechanism 2 includes a vibration generator capable of providing vibration, such as a vibration disk, an eccentric vibration mechanism 2, or a cam mechanism. For the convenience of use in production, preferably cam mechanism is as vibration mechanism 2 of this embodiment, wherein, cam mechanism includes the support, driving motor, the cam, spacing ring and vibrating arm, and the vibrating arm passes the vertical lower extreme of placing of spacing ring and is provided with the pulley, and one end and cam week side are inconsistent and pass through pulley sliding connection, and the other end and 1 lower fixed surface connection of screening mechanism, driving motor drive cam mechanism rotate, drive vibrating arm reciprocating vibration about the spacing ring axis direction, provide the vibration for screening mechanism 1.
As shown in fig. 1, the aggregate that treats to screen gets into screening hopper 3, the aggregate that the particle diameter is greater than 120mm is filtered earlier to the branch sieve board 5 of screening hopper 3, the aggregate that the particle diameter is less than or equal to the biggest permissible particle diameter falls into screening track 4 through sieve mesh 6 in advance, vibration through the vibrating mechanism 2 of screening mechanism 1 bottom, the aggregate is along the direction motion of seting up of slide 7 on screening track 4's slide 7, simultaneously with adnexed earth vibration separation on the aggregate, slide 7 sets up to the spout structure, and slide 7 cross-section still can be for the semicircle, the rectangle, shapes such as triangle-shaped, preferred slide 7 ground cross-section sets up to the semicircle shape, and divide sieve mesh 8 to be located the spout bottom, the aggregate that is convenient for treat to screen passes through sieve mesh 8. And the aggregates with the particle size smaller than the aperture size of the sieving holes 8 can fall into the sieving track 4 (namely the lower sieving track 4) with the smaller aperture of the sieving holes 8 below for the next round of sieving, thereby being capable of easily dividing the aggregates with different particle sizes into four grading grades of 80-120mm, 40-80mm, 20-40mm and 5-20 mm.
As shown in fig. 1, the bottom of screening mechanism 1 and vibration mechanism 2 is provided with frame 15, frame 15's setting can play the supporting role to screening mechanism 1 and vibration mechanism 2, each screening track 4 is along its length direction to be provided with the feed opening downwards towards the direction slope of keeping away from screening hopper 3 (not marked in the figure), all the other three sides all are provided with baffle 16, can effectively prevent from shaking out the phenomenon emergence outside the screening track from this, make the aggregate can be along predetermined orbital motion, it is very convenient.
Meanwhile, as shown in fig. 1, a corresponding conveying mechanism 9 is arranged at each feed opening, and a material collector 10 is arranged at one end of the conveying mechanism 9 far away from the screening track 4. The conveying mechanism 9 comprises a conveying belt, two conveying rollers and a conveying motor, the conveying motor drives the conveying rollers to rotate, and the conveying rollers drive the conveying belt to move to convey aggregates of corresponding levels to the collector 10, so that the aggregate conveying effect can be achieved. In order to weigh aggregates with different particle sizes obtained by screening conveniently, a weighing and batching mechanism (not shown in the figure) is arranged at the bottom of each material collector 10, the weighing and batching mechanism comprises a weighing electronic scale and a gravity sensor, a blanking channel 12 is arranged below each weighing and batching mechanism, the blanking channel 12 is arranged obliquely downwards, and an aggregate collecting box 13 is arranged below the lowest part of the blanking channel 12. When the weight of the aggregates of the corresponding grade conveyed by the conveyor belt reaches a corresponding set value on the weighing electronic scale, the operation of the conveyor belt is stopped through the gravity sensor, the aggregates reaching the corresponding weight are released to the aggregate collecting box 13 through the blanking channel 12, and when the aggregates of different grades in different proportions meet the requirement of manual grading, the aggregate collecting box 13 is replaced. A small particle collecting box 14 is arranged below the screening holes 8 of the screening track 4 of the screening mechanism 1, which is farthest from the screening hopper 3, so that the aggregate with the particle size smaller than 5mm can be recycled conveniently.
The specific embodiments are only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (9)
1. A small aggregate classified screening device for a laboratory comprises a screening mechanism (1) and a vibrating mechanism (2) arranged at the bottom of the screening mechanism (1), and is characterized in that the screening mechanism (1) sequentially comprises a screening hopper (3) with an open upper end and at least two screening tracks (4) from top to bottom, the screening tracks (4) extend along the length direction of the screening tracks and are provided with a plurality of slideways (7), and screening holes (8) vertically penetrate through the slideways (7); the aperture size of the sub-sieve holes (8) of each screening track (4) is the same, and the aperture size of the sub-sieve holes (8) on each screening track (4) is gradually reduced along the direction far away from the screening hopper (3).
2. The small-sized aggregate classifying and screening device for the laboratory according to claim 1, wherein a classifying screen plate (5) is horizontally arranged in the screening hopper (3), a pre-screening hole (6) is formed in the classifying screen plate (5), and the aperture of the pre-screening hole (6) is equal to the maximum allowable particle size of the aggregates.
3. A small-sized aggregate classifying screen for laboratory use according to claim 1, wherein said screen track (4) is provided with a feed opening along its length and obliquely downward in a direction away from the screen hopper (3), and baffles (16) are provided on the remaining three sides.
4. A small-sized aggregate classifying and screening device for laboratories according to claim 3, wherein said feed opening is provided with a conveying mechanism (9).
5. A small-sized aggregate classifying and screening device for laboratories according to claim 4, wherein each conveying mechanism (9) is provided with a collector (10) at an end far from the screening track (4).
6. The small-sized aggregate classifying and screening device for the laboratory according to claim 5, wherein a weighing and material distributing mechanism is arranged at the bottom of each material collector (10), a blanking channel (12) is arranged below each weighing and material distributing mechanism, the blanking channel (12) is arranged obliquely downwards, and an aggregate collecting box (13) is arranged below the lowest part of the blanking channel (12).
7. The small-sized aggregate classifying and screening device for the laboratory according to claim 1, wherein a small particle collecting box (14) is provided below the sieving holes (8) of the sieving rail (4) of the sieving mechanism (1) farthest from the sieving hopper (3).
8. The small-sized aggregate grading and screening device for the laboratory according to claim 3, wherein a baffle plate (17) for preventing the aggregates from sliding downwards too fast is detachably arranged at the feed opening of the screening track (4).
9. The small-sized aggregate classifying and screening device for the laboratory according to claim 8, wherein the inner walls of the two baffles (16) near the discharge port are respectively provided with a U-shaped groove (18), and the two ends of the baffle (17) are respectively inserted into the corresponding U-shaped grooves (18).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920378776.5U CN209849262U (en) | 2019-03-23 | 2019-03-23 | Small-size aggregate classified screening device that laboratory was used |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920378776.5U CN209849262U (en) | 2019-03-23 | 2019-03-23 | Small-size aggregate classified screening device that laboratory was used |
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| CN209849262U true CN209849262U (en) | 2019-12-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781106A (en) * | 2020-07-11 | 2020-10-16 | 安徽省建筑科学研究设计院 | Mechanism sand vibration measurement system |
| CN111892318A (en) * | 2020-07-01 | 2020-11-06 | 台州四强新型建材有限公司 | Recycled concrete aggregate screening system |
| CN113457965A (en) * | 2021-07-08 | 2021-10-01 | 湖南科技大学 | Aggregate multi-stage screening device |
| CN113781545A (en) * | 2021-09-16 | 2021-12-10 | 西南科技大学 | Method for rapidly identifying geometric characteristics of irregular particles |
| CN115025976A (en) * | 2022-05-30 | 2022-09-09 | 重庆茂侨科技有限公司 | Linear sand and stone vibration screening equipment |
-
2019
- 2019-03-23 CN CN201920378776.5U patent/CN209849262U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111892318A (en) * | 2020-07-01 | 2020-11-06 | 台州四强新型建材有限公司 | Recycled concrete aggregate screening system |
| CN111781106A (en) * | 2020-07-11 | 2020-10-16 | 安徽省建筑科学研究设计院 | Mechanism sand vibration measurement system |
| CN111781106B (en) * | 2020-07-11 | 2023-09-29 | 安徽省建筑科学研究设计院 | Machine-made sand vibration measurement system |
| CN113457965A (en) * | 2021-07-08 | 2021-10-01 | 湖南科技大学 | Aggregate multi-stage screening device |
| CN113781545A (en) * | 2021-09-16 | 2021-12-10 | 西南科技大学 | Method for rapidly identifying geometric characteristics of irregular particles |
| CN113781545B (en) * | 2021-09-16 | 2022-07-26 | 西南科技大学 | Method for rapidly identifying geometric characteristics of irregular particles |
| CN115025976A (en) * | 2022-05-30 | 2022-09-09 | 重庆茂侨科技有限公司 | Linear sand and stone vibration screening equipment |
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Address after: 201499 No. 508, Fagong Road, Fengxian District, Shanghai Patentee after: Shanghai lianding New Material Technology Co.,Ltd. Address before: Room 204, Building 3, 276 Jiefangzhong Road, Nanqiao Town, Fengxian District, Shanghai 201400 Patentee before: SHANGHAI LIANDING CONCRETE PRODUCTS Co.,Ltd. |