CN209968856U - Laboratory particle screening device - Google Patents
Laboratory particle screening device Download PDFInfo
- Publication number
- CN209968856U CN209968856U CN201920478997.XU CN201920478997U CN209968856U CN 209968856 U CN209968856 U CN 209968856U CN 201920478997 U CN201920478997 U CN 201920478997U CN 209968856 U CN209968856 U CN 209968856U
- Authority
- CN
- China
- Prior art keywords
- screen
- drum
- sieve
- cylindrical
- scraping plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a laboratory particle screening device, which belongs to the technical field of screening equipment and comprises a rotary screen driven by a power part I and a blanking assembly used for feeding materials to the rotary screen, wherein the power part I, the rotary screen and the blanking assembly are all arranged on a frame, and the blanking assembly is arranged above the rotary screen and is matched with the outer wall of the rotary screen; the drum screen is a cylindrical shell with two ends being blocked and the central axis of the cylindrical shell being horizontally arranged, sieve holes matched with the diameters of the granular materials are formed in the arc side wall of the drum screen, and a material blocking mechanism used for preventing the granular materials from leaking outside is arranged in the inner cavity of the drum screen. The granule material of treating the screening throws the rotary screen through the unloading subassembly on, and the rotary screen can be collected the granule of required particle diameter at the rotation in-process, can avoid the granule material of collecting in the rotary screen to leak outward with the help of stock stop, and then realizes the accurate screening of granule material.
Description
Technical Field
The utility model belongs to the technical field of the screening installation, especially, relate to a laboratory granule screening plant.
Background
In recent years, with the continuous development of economy, the infrastructure construction in the civil engineering field is more rapid, and meanwhile, the development of corresponding scientific research in laboratories is promoted by a large amount of infrastructure construction. The development means the advance, various problems are encountered in the process of the advance, and in order to ensure the accuracy and engineering applicability of laboratory data, stricter requirements are put on laboratory experimental equipment, particle material alternatives and the like. Particularly, in some experimental science researches based on the granular materials, the standard degree of the experimental granular materials may influence a series of subsequent experimental results, for example, the requirement of a certain specific granular group, the mutually mixed grain size grading and grain size distribution of different granular groups and the like all need to efficiently sieve the granular materials, and finally the purpose of reducing the self condition of a construction site is achieved, so that the experimental granular materials are suitable for and meet the engineering construction requirements.
The particle analysis test is a basic test for geotechnical work, wherein screening is the most widely and effectively used particle size classification method at present. Most of the existing screening equipment aims at screening particles for practical engineering, and on one hand, the equipment is large in size and cannot be applied to laboratories. Because the screening batch of the particles in the laboratory is not particularly large and the size is small, manual screening or laboratory vibrating screen screening is mostly adopted, the labor intensity of manual screening is high, the time consumption is long, the screening efficiency is low, the fineness is poor, the method is not economical, and the like. The vibrating screen screening equipment needs to operate for a long time and has high vibration frequency, so that parts are easy to damage, and noise pollution is particularly high. On the other hand, the scientific research in the laboratory often needs a plurality of granular materials with different grain groups, and the existing equipment can rarely obtain the granular materials with different grain groups and high fineness.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a laboratory granule screening plant aims at solving among the above-mentioned prior art that current screening equipment is not suitable for the different grain group's granules of laboratory screening, and artifical screening exists intensity of labour big, long, the screening efficiency is low and the relatively poor technical problem of fineness.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
a laboratory particle screening device comprises a rotary screen driven by a power part I and a blanking assembly used for feeding materials to the rotary screen, wherein the power part I, the rotary screen and the blanking assembly are all arranged on a rack, and the blanking assembly is arranged above the rotary screen and is matched with the outer wall of the rotary screen; the drum screen is a cylindrical shell with two ends being blocked and the central axis of the cylindrical shell being horizontally arranged, sieve holes matched with the diameters of the granular materials are formed in the arc side wall of the drum screen, and a material blocking mechanism used for preventing the granular materials from leaking outside is arranged in the inner cavity of the drum screen.
Preferably, the drum screen comprises a cylindrical screen drum I and a plurality of cylindrical screen drums II, the cylindrical screen drum I is formed by assembling a plurality of fan-shaped screens, each fan-shaped screen comprises an arc-shaped screen surface, two side plates and cover plates at two ends, screen holes matched with the diameters of the granular materials are arranged on the arc-shaped screen surfaces, and the screen holes on the plurality of fan-shaped screens are matched with the diameters of the granular materials of different grain groups; the cylindrical screen drum II comprises a cylindrical drum body and end covers at two ends, the drum body is divided into a perforated screening part and a non-perforated solid part, screen holes matched with the diameter of the granular materials are arranged on the perforated screening part, the number of the cylindrical screen drum II is consistent with that of the fan-shaped screens of the cylindrical screen drum I, and the screen holes on different cylindrical screen drums II correspond to the screen holes on different fan-shaped screens; the stock stop includes first stock stop structure and second stock stop, first stock stop sets up inside the arc sifter face of fan-shaped sieve, second stock stop sets up in the inside of cylindrical sieve section of thick bamboo two, and corresponds and set up in the inboard of foraminiferous screening portion.
Preferably, a plurality of fan-shaped sieves of the first cylindrical sieve drum are sequentially arranged along the arc-shaped side wall from large to small according to sieve holes, and the occupation ratio of the arc-shaped sieve surfaces of the plurality of fan-shaped sieves to the whole circumference is sequentially reduced from large to small according to the sieve holes; the radian of the perforated screening part of the cylindrical screen drum II is 25% -33% of the whole circumference.
Preferably, the first material blocking structure comprises a first fixed baffle and a first movable baffle which are parallel to the central axis of the drum screen, the fixed end of the first fixed baffle is fixed at the inner side of the side plate, and the cantilever end of the first fixed baffle corresponds to the first movable baffle; one end of the first movable baffle is hinged to the inner side of the other side plate, and the movable end of the first movable baffle can be in lap joint with the cantilever end of the first fixed baffle and is arranged towards one side of the side plate; the first fixed baffle and the first movable baffle are lapped and then form an inner cavity with an isosceles triangle-shaped cross section with the two side plates; the rotating angle of the first movable baffle relative to the first fixed baffle is 0-45 degrees, and the distance between the first fixed baffle and the connection position of the first movable baffle and the two side plates and the circle center is 3/2-4/3 radiuses.
Preferably, the second material blocking structure comprises a second fixed baffle and a second movable baffle which are parallel to the central axis of the drum screen, the fixed end of the second fixed baffle is fixed to the inner side of the edge of the screening part with the hole, and the cantilever end of the second fixed baffle corresponds to the second movable baffle; one end of the second movable baffle is hinged to the inner side of the other edge of the screening part with the holes, and the movable end of the second movable baffle can be in lap joint with the cantilever end of the second fixed baffle and is arranged towards one side of the solid part without holes; the rotation angle of the second movable baffle relative to the second fixed baffle is 0-45 degrees.
Preferably, the blanking assembly comprises a charging hopper and a feeding hopper which are connected with the frame, the charging hopper and the feeding hopper are both funnel-shaped and open at the upper parts, the lower end opening of the charging hopper is arranged above the feeding hopper, and the lower end opening of the feeding hopper is matched with the outer wall of the drum screen; the lower extreme opening part of charging hopper is equipped with the horizontal picture peg that can the pull.
Preferably, the outer part of the rotary screen is provided with a shell matched with the shape of the rotary screen, the shell is fixed on the rack, the lower end opening of the feeding hopper is in butt joint with the opening at the top of the shell, the middle main shaft of the rotary screen is connected with the first power part, and two ends of the shell are provided with shaft clamping grooves matched with the main shaft.
Preferably, the feeding hopper consists of a left scraping plate, a right scraping plate and two side baffles, the left scraping plate and the right scraping plate are respectively arranged above two ends of the drum screen, the two side baffles are arranged in an acute angle, and the lower ends of the two side baffles are parallel to a bus of the drum screen; two sides of the left scraping plate and the right scraping plate are abutted against the inner walls of the side baffles, and two ends of the left scraping plate and the right scraping plate are erected at the tops of the two side baffles and can slide along the length direction of the side baffles; the lower ends of the two side baffles are fixedly connected with two sides of a rectangular opening at the top of the shell, and the lower ends of the left scraping plate and the right scraping plate are abutted against two ends of the rectangular opening at the top of the shell.
Preferably, the lower ends of the left scraping plate and the right scraping plate are provided with brushes, and the inner sides of the connecting parts of the two side baffles and the shell are provided with brushes.
Preferably, the charging hopper is in sliding fit with a sliding rail at the top of the rack, the charging hopper is driven by a second power component, the second power component is arranged on the rack, and the sliding rail is arranged in parallel to the central axis of the drum screen.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the utility model has the advantages that the granule materials are fed onto the drum screen through the blanking assembly, and the granules with the required particle size can be left outside the drum screen in the process of driving the drum screen to rotate by the power component I, so that the granules are convenient to collect; the granular materials collected in the drum screen can be prevented from leaking outwards by means of the material blocking mechanism, and then the granular materials are accurately screened. The utility model has the advantages of simple structure is compact, convenient operation is swift, realizes through changing the drum sieve that the granule material is by coarse to fine screening transform, and screening efficiency is high to save a large amount of manpowers, material resources and time, be particularly useful for the screening of granule material in the laboratory.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of a laboratory particle screening device according to an embodiment of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a schematic view of the structure of FIG. 1 after the trommel has been removed;
FIG. 5 is a schematic structural diagram of a first cylindrical screen drum in a laboratory particle screening device according to another embodiment;
FIG. 6 is a schematic structural view of a second cylindrical screen drum of FIG. 1;
FIG. 7 is a schematic illustration of the construction of one of the sector screens of FIG. 5;
FIG. 8 is a view of the sector screen of FIG. 7 after being rotated 180;
FIG. 9 is a perspective view of the sector screen of FIG. 7;
FIG. 10 is a schematic view of the arrangement of a first dam structure within each sector screen of FIG. 5;
in the figure: 00. screening holes; 1. a first power component; 2. the screen comprises a rotary screen, 20, a sector screen, 201, an arc screen surface, 202, side plates, 203 and a cover plate; 21. the screen comprises a first cylindrical screen drum 22, a second cylindrical screen drum 220, a screening part with holes 221 and a solid part without holes; 3. the device comprises a frame 31, upright posts 32, cross beams 33, longitudinal beams 34 and supporting plates; 4. the first material blocking structure 41, the first fixed baffle plate 42 and the first movable baffle plate; 5. a second material blocking structure 51, a second fixed baffle plate 52 and a second movable baffle plate; 6. a charging hopper; 7. a feeding hopper, 71-1, a left scraping plate, 71-2, a right scraping plate, 72 and a side baffle; 8. a shell 80, a shaft clamping groove; 9. a main shaft; 10. inserting plates; 11. a second power component; 12. and a brush.
20-1, 10mm aperture sieve; 20-2, 8mm aperture sieve; 20-3, 7mm aperture sieve; 20-4, 5mm aperture sieve; 20-5 mm, 3mm aperture sieve.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The laboratory particle screening device shown in fig. 1-4 comprises a rotary screen 2 driven by a power part 1 and a blanking assembly used for feeding materials to the rotary screen 2, wherein the power part 1, the rotary screen 2 and the blanking assembly are all arranged on a rack 3, and the blanking assembly is arranged above the rotary screen 2 and is matched with the outer wall of the rotary screen 2; the drum screen 2 is a cylindrical shell with two ends being blocked and the central axis of the cylindrical shell being horizontally arranged, the circular arc side wall of the drum screen 2 is provided with a screen hole 00 matched with the diameter of the granular material, and the inner cavity of the drum screen 2 is provided with a material blocking mechanism for preventing the granular material from leaking outwards. The first power part adopts a motor, the rotary screen rotates under the driving of the motor, the granular materials to be screened fall onto the rotary screen along the blanking assembly, the granular materials smaller than or equal to the screen holes enter the rotary screen, and the granular materials with required particle sizes are left outside the rotary screen and are convenient to collect; the granular materials in the drum screen can be prevented from leaking outwards through the material blocking mechanism, and then the screening of the granular materials is realized.
As a preferable scheme, as shown in fig. 5 and 6, the drum screen 2 includes a first cylindrical screen drum 21 and a plurality of second cylindrical screen drums 22, the first cylindrical screen drum 21 is formed by assembling a plurality of sector screens 20, each sector screen 20 includes a curved screen surface 201, two side plates 202 and cover plates 203 at two ends, screen holes 00 matched with the diameters of the granular materials are arranged on the curved screen surface 201, and the screen holes on the sector screens 20 are matched with the diameters of the granular materials of different grain groups; the second cylindrical screen drum 22 comprises a cylindrical drum body and end covers at two ends, the drum body is divided into a perforated screening part 220 and a non-perforated solid part 221, screen holes 00 matched with the diameters of the granular materials are arranged on the perforated screening part 220, the number of the second cylindrical screen drum 22 is the same as that of the fan-shaped screens 20 of the first cylindrical screen drum 21, and the screen holes on the second cylindrical screen drum 22 correspond to those on the different fan-shaped screens 20; the stock stop includes first stock stop 4 and second stock stop 5, first stock stop 4 sets up inside the arc sifter surface 201 of fan-shaped sieve 20, second stock stop 5 sets up in the inside of cylindrical sieve section of thick bamboo two 22, and corresponds and set up in the inboard of foraminiferous screening portion 220. Wherein, apron and end cover all adopt transparent material to make, conveniently observe the behavior in the drum sieve.
In a specific embodiment of the present invention, as shown in fig. 5 and 10, the plurality of sector sieves 20 of the cylindrical sieve drum i 21 are sequentially arranged along the arc-shaped side wall from large to small according to the sieve holes, and the occupation ratio of the arc-shaped sieve surfaces 201 of the plurality of sector sieves 20 to the whole circumference is sequentially reduced from large to small according to the sieve holes; the radian of the perforated screening part 220 of the cylindrical screen drum II 22 is 25% -33% of the whole circumference, and the diameter of the screen hole of the perforated screening part is matched with the screen hole in the fan-shaped screen. The specific design is as follows, the arc screen surface of the sector screen with the screen holes with the largest grain diameter accounts for 40% -45% of the whole circumference, the arc screen surface of the sector screen with the screen holes with the secondary grain diameter accounts for at least 50% of the rest circumference, the arc screen surface of the sector screen with the secondary grain diameter at least accounts for 50% of the rest circumference, and so on. In particular, the amount of the solvent to be used,
in an embodiment of the present invention, as shown in fig. 7 and 8-10, the first material blocking structure 4 includes a first fixed baffle 41 and a first movable baffle 42 parallel to the central axis of the drum screen 2, the fixed end of the first fixed baffle 41 is fixed inside the side plate 202, and the cantilever end of the first fixed baffle 41 corresponds to the first movable baffle 42; one end of the first movable baffle 42 is hinged to the inner side of the other side plate 202, and the movable end of the first movable baffle 42 can be lapped with the cantilever end of the first fixed baffle 41 and is arranged towards one side of the side plate 202; the first fixed baffle 41 and the first movable baffle 42 are lapped and then form an inner cavity with an isosceles triangle cross section with the two side plates 202; the rotating angle of the first movable baffle 42 relative to the first fixed baffle 41 is 0-45 degrees, and by adopting the structure, the situation that the gap between the first fixed baffle and the first movable baffle cannot be plugged in time due to the fact that the rotating angle of the first movable baffle is too large can be avoided; the distance between the first fixed baffle 41 and the first movable baffle 42 and the connection position of the two side plates 202 is 3/2-4/3 radius, so that the granules entering the fan-shaped screen can be conveniently collected. In the rotary screen rotation process, when the sieve bend surface of the fan-shaped screen rotates to the top, the particle materials of the sieve holes smaller than or equal to the sieve holes enter the fan-shaped screen along the sieve holes, the movable end of the first movable baffle plate sags at the moment, the particle materials slide to the inner cavity along the first inclined movable baffle plate, and after the rotary screen rotates for 180 degrees, the movable end of the first movable baffle plate is lapped on the fixed baffle plate, so that the inner cavity of the rotary screen is blocked, and the particle materials are prevented from leaking.
In a specific embodiment of the present invention, as shown in fig. 6, the second material blocking structure 5 includes a second fixed baffle 51 and a second movable baffle 52 parallel to the central axis of the drum screen 2, the fixed end of the second fixed baffle 51 is fixed inside the edge of the perforated screening portion 220, and the cantilever end of the second fixed baffle 51 corresponds to the second movable baffle 52; one end of the second movable baffle 52 is hinged to the inner side of the other edge of the perforated screening part 220, and the movable end of the second movable baffle 52 can be lapped with the cantilever end of the second fixed baffle 51 and is arranged towards one side of the imperforate solid part 221; the rotating angle of the second movable baffle 52 relative to the second fixed baffle 51 is 0-45 degrees. The working principle of the second material blocking structure is the same as that of the first material blocking structure.
In a preferred embodiment of the present invention, as shown in fig. 1-4, the blanking assembly includes a charging hopper 6 and a feeding hopper 7 connected to the frame 3, the charging hopper 6 and the feeding hopper 7 are both funnel-shaped with an open top, the lower opening of the charging hopper 6 is disposed above the feeding hopper 7, and the lower opening of the feeding hopper 7 is matched with the outer wall of the drum screen 2; the lower end opening of the charging hopper 6 is provided with a drawable horizontal inserting plate 10 for plugging or opening the lower end opening of the charging hopper. The vertical distance between the bottom of the charging hopper and the top of the feeding hopper is 0.1-0.2 m, so that the structure can ensure that the granular materials uniformly fall into the feeding hopper above the drum screen, and the materials are prevented from being stacked.
According to the technical scheme, the outer shell 8 matched with the outer shape of the rotary screen 2 is arranged outside the rotary screen, the outer shell 8 is fixed on the rack 3, the lower end opening of the feeding hopper 7 is in butt joint with the opening in the top of the outer shell 8, the middle main shaft 9 of the rotary screen 2 is connected with the power part I1, and shaft clamping grooves 80 matched with the main shaft 9 are formed in the two ends of the outer shell 8. Wherein, the open-top of shell is the rectangle, and the opening is about 1/5 ~ 1/4 circumference breach, and the arc lateral wall cross section of shell is the major arc, can collect the dust that the granule material produced at the screening in-process with the help of this shell, avoids polluting the surrounding environment. The inner diameter of the shell is 0.1-0.15 m larger than the outer diameter of the drum screen, and the lengths of the shell are the same.
In an embodiment of the present invention, as shown in fig. 1 and 4, the feeding hopper 7 is composed of a left scraping plate 71-1, a right scraping plate 71-2 and two side baffles 72, the left scraping plate 71-1 and the right scraping plate 71-2 are respectively disposed above two ends of the drum screen 2, the two side baffles 72 are disposed at an acute angle, the lower ends of the two side baffles are parallel to a bus of the drum screen 2, and the included angles between the two side baffles and a horizontal plane are 45-75 degrees, which facilitates the blanking of the granular materials. The two sides of the left scraping plate 71-1 and the right scraping plate 71-2 are abutted against the inner walls of the side baffles 72, and the two ends of the left scraping plate 71-1 and the right scraping plate 71-2 are erected at the tops of the two side baffles 72 and can slide along the length direction of the side baffles 72; the lower ends of the two side baffles 72 are fixedly connected with two sides of the rectangular opening at the top of the shell 8, and the lower ends of the left scraping plate 71-1 and the right scraping plate 71-2 are abutted with two ends of the rectangular opening at the top of the shell 8. After the granule material accomplished the screening at the drum sieve top, utilize the scraping plate can collect the large granule material of leaving over in the drum sieve outside.
Further optimizing the technical scheme, as shown in fig. 1-4, the lower ends of the left scraping plate 71-1 and the right scraping plate 71-2 are provided with brushes 12, the inner sides of the joints of the two side baffles 72 and the shell 8 are provided with the brushes 12, and the brushes can be used for thoroughly cleaning dust on the outer wall of the drum screen.
In order to realize uniform blanking of the granular materials, the charging hopper 6 is in sliding fit with a sliding rail at the top of the frame 3, the charging hopper 6 is controlled by a second power component 11, the second power component 11 is arranged on the frame 3, and the sliding rail is arranged in parallel to the central axis of the drum screen 2. And the second power component comprises a controller and a motor, when the charging hopper is filled with the granular materials, the motor is started, the inserting plate at the bottom of the charging hopper is pulled out, and the granular materials are uniformly sprinkled into the charging hopper in the process that the charging hopper slides left and right along the top of the rack, so that the granular materials are fully contacted with the drum screen, and the screening of the granular materials is realized.
In order to meet the requirement of light weight design, as shown in fig. 1-4, the frame comprises four upright posts, two cross beams and a plurality of longitudinal beams, and the drum screen is arranged among the four upright posts; the slide rail is installed at the crossbeam top, installs the gyro wheel simultaneously at the both sides bottom of charging hopper, and the motor drive charging hopper moves along the slide rail level.
In one embodiment of the present invention, the diameter of the drum screen is designed to be 0.3 m-0.5 m, the length is 1.0 m-1.5 m, the left and right ends are made of transparent material, and the rest is made of steel.
The utility model is further explained in detail with reference to the following embodiments, the laboratory needs stones with a particle size range of 2mm < d < 3mm, 3mm < d < 5mm, 5mm < d < 7mm, 7mm < d < 8mm and 8mm < d < 10 mm. Utilize the utility model discloses specific operating procedure as follows:
s1: the number of the fan-shaped sieves is designed to be 5, the sieve with the aperture of 10mm is 20-1, the sieve with the aperture of 8mm is 20-2, the sieve with the aperture of 7mm is 20-3, the sieve with the aperture of 5mm is 20-4, and the sieve with the aperture of 3mm is 20-5, the ratio of the arc-shaped sieve surface of each fan-shaped sieve to the arc-shaped side wall of the first cylindrical sieve cylinder is respectively as follows: 20-1 percent of 10mm aperture sieve, 20-2 percent of 8mm aperture sieve, 20-3 percent of 7mm aperture sieve, 20-4 percent of 5mm aperture sieve and 20-5 percent of 3mm aperture sieve are 40 percent, 30 percent, 15 percent and 7 percent respectively. After the screening is finished, the fan-shaped screens are sequentially arranged according to the screen holes from large to small and are combined with the main shaft 9 to form a cylindrical screen cylinder I21.
S2: the first cylindrical screen drum 21 is placed in the housing and a suitable amount of particulate material is loaded into the hopper 6.
S3: and (3) starting a motor switch for controlling the drum screen, slowly pulling out the plug board at the bottom side of the charging hopper after the rotation is stable, starting a motor switch for controlling the charging hopper 6 to horizontally move, continuously charging the granular materials into the charging hopper, closing the switch after no granular materials enter the drum screen, and then closing the switch when the residual granular materials of the charging hopper have the grain diameter d larger than 10 mm.
S4: the right material scraping plate 71-2 of the feeding hopper 7 is pulled off, and the left material scraping plate 71-1 is used for scraping and collecting the residual particles in the feeding hopper.
S5: selecting a second cylindrical screen drum 22, wherein the radian of the screening part with holes is 1/3 of the whole circumference, and the diameters of the screen holes of the screening part with holes are respectively 8mm, 7mm, 5mm, 3mm and 2mm, and preparing the five cylindrical screen drums respectively;
s6: taking down the cylindrical screen drum I21, putting the cylindrical screen drum II 22 with 8mm aperture, pouring the granular materials in the 10mm aperture sector screen 20-1 in the cylindrical screen drum I21 into the charging hopper 2, repeating the operation S3, and collecting the granular materials with the particle size of the residual granular materials being more than 8mm and less than or equal to 10mm in the charging hopper by the operation S4;
s7: taking down the cylindrical screen cylinder II 22 with the screen hole of 8mm, putting the cylindrical screen cylinder II 22 with the screen hole of 7mm into the screen cylinder II 22 with the screen hole of 8mm, mixing the granular materials in the cylindrical screen cylinder II 22 with the screen hole of 8mm and the granular materials in the fan-shaped screen 20-2 with the screen hole of 8mm, pouring the mixture into the charging hopper 2, repeating the operation S3, collecting the granular materials with the grain size of the residual granular materials in the charging hopper being 7mm < d < 8mm at the moment, and carrying out the operation S4.
S8: taking down the cylindrical sieve cylinder II 22 with the sieve pore diameter of 7mm, putting the cylindrical sieve cylinder II 22 with the sieve pore diameter of 5mm into the sieve, mixing the granular materials in the cylindrical sieve cylinder II 22 with the sieve pore diameter of 7mm and the granular materials in the fan-shaped sieve 20-3 with the sieve pore diameter of 7mm, pouring the mixture into the charging hopper 2, repeating the operation S3, and collecting the granular materials with the grain diameter of the residual granular materials in the charging hopper being larger than 5mm, namely 5 mm-7 mm by the operation S4.
S9: taking down the cylindrical screen cylinder II 22 with the 5mm aperture, putting the cylindrical screen cylinder II 22 with the 3mm aperture, mixing the granular materials in the cylindrical screen cylinder II 22 with the 5mm aperture and the granular materials in the fan-shaped screen 20-4 with the 5mm aperture, pouring the mixture into the charging hopper 2, repeating the operation S3, and collecting the granular materials with the grain size of the residual granular materials in the charging hopper of which the grain size is more than 3mm and less than or equal to 5mm in the operation S4.
S10: taking down the cylindrical screen cylinder II 22 with the screen hole of 3mm, putting the cylindrical screen cylinder II 22 with the screen hole of 2mm into the screen hole, mixing the granular materials in the cylindrical screen cylinder II 22 with the screen hole of 3mm and the granular materials in the fan-shaped screen 20-5 with the screen hole of 3mm, pouring the mixture into the charging hopper 2, repeating the operation S3, collecting the granular materials with the grain size of the residual granular materials in the charging hopper being 2mm < d < 3mm in an operation S4.
To sum up, utilize the utility model discloses screening granule material, granule material are by thick constantly transform drum sieve to thin in the screening process, because the granule material of coarse grain is more, and the granule material of fine grain is small in quantity, so to all drum sieve screen surface wearing and tearing little, fine fraction screening efficiency is higher, and coarse fraction is broken less in the screening process. Utilize the utility model discloses only need manpower to feed and change the drum sieve in the screening process to save a large amount of manpowers, material resources and time, and install simple structure, preparation low cost. The utility model has the advantages as follows:
(1) the screening process of the utility model basically realizes automation, and saves a large amount of manpower, material resources and financial resources;
(2) the screening of the utility model is processed by two processes, and the screening efficiency is greatly improved compared with the traditional manual screening efficiency;
(3) the size and the sieve pore diameter of the fan-shaped sieve in the utility model can be changed according to the test requirements, thereby meeting different screening test requirements, the fan-shaped sieve is independent and can be assembled into a cylindrical sieve cylinder, and further the granular materials can be separated and stacked according to different particle diameters;
(4) the utility model adopts the cylindrical screen drum, the particle screening is more thorough in the rotating process, the machine vibration is small, the service life and the overall performance of the machine are improved, and the maintenance cost and the noise pollution of the machine are reduced;
(5) the utility model can easily observe the screening condition inside the drum screen from the side surface in the process of screening the granular materials, can accurately control the screening process, and reduces unnecessary waste; the internal screening condition can be observed from the side surface of the screen drum in the process of screening the granular materials, so that the screening process can be accurately controlled;
(6) the utility model can greatly improve the reliability and accuracy of the screened granularity and size while saving material resources, manpower and financial resources, and lay a good experimental foundation for subsequent experiments;
(7) the utility model has simple structure, easy assembly and low cost;
(8) the utility model is simple in operation, convenient to use saves time.
In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the one described herein, and those skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed above.
Claims (10)
1. A laboratory particle screening device, its characterized in that: the automatic feeding device comprises a rotary screen driven by a power part I and a blanking assembly used for feeding materials to the rotary screen, wherein the power part I, the rotary screen and the blanking assembly are all arranged on a rack, and the blanking assembly is arranged above the rotary screen and is matched with the outer wall of the rotary screen; the drum screen is a cylindrical shell with two ends being blocked and the central axis of the cylindrical shell being horizontally arranged, sieve holes matched with the diameters of the granular materials are formed in the arc side wall of the drum screen, and a material blocking mechanism used for preventing the granular materials from leaking outside is arranged in the inner cavity of the drum screen.
2. The laboratory particle screening apparatus of claim 1, wherein: the drum sieve comprises a cylindrical sieve barrel I and a plurality of cylindrical sieve barrels II, the cylindrical sieve barrel I is formed by assembling a plurality of fan-shaped sieves, each fan-shaped sieve comprises a cambered sieve surface, two side plates and cover plates at two ends, sieve holes matched with the diameters of the granular materials are arranged on the cambered sieve surface, and the sieve holes in the plurality of fan-shaped sieves are matched with the diameters of the granular materials in different grain groups; the cylindrical screen drum II comprises a cylindrical drum body and end covers at two ends, the drum body is divided into a perforated screening part and a non-perforated solid part, screen holes matched with the diameter of the granular materials are arranged on the perforated screening part, the number of the cylindrical screen drum II is consistent with that of the fan-shaped screens of the cylindrical screen drum I, and the screen holes on different cylindrical screen drums II correspond to the screen holes on different fan-shaped screens; the stock stop includes first stock stop structure and second stock stop, first stock stop sets up inside the arc sifter face of fan-shaped sieve, second stock stop sets up in the inside of cylindrical sieve section of thick bamboo two, and corresponds and set up in the inboard of foraminiferous screening portion.
3. The laboratory particle screening apparatus of claim 2, wherein: a plurality of fan-shaped sieves of the first cylindrical sieve drum are sequentially arranged along the arc-shaped side wall from large to small according to sieve holes, and the occupation ratio of the arc-shaped sieve surfaces of the plurality of fan-shaped sieves to the whole circumference is sequentially reduced from large to small according to the sieve holes; the radian of the perforated screening part of the cylindrical screen drum II is 25% -33% of the whole circumference.
4. The laboratory particle screening apparatus of claim 2, wherein: the first material blocking structure comprises a first fixed baffle and a first movable baffle which are parallel to the central axis of the drum screen, the fixed end of the first fixed baffle is fixed at the inner side of the side plate, and the cantilever end of the first fixed baffle corresponds to the first movable baffle; one end of the first movable baffle is hinged to the inner side of the other side plate, and the movable end of the first movable baffle can be in lap joint with the cantilever end of the first fixed baffle and is arranged towards one side of the side plate; the first fixed baffle and the first movable baffle are lapped and then form an inner cavity with an isosceles triangle-shaped cross section with the two side plates; the rotating angle of the first movable baffle relative to the first fixed baffle is 0-45 degrees, and the distance between the first fixed baffle and the connection position of the first movable baffle and the two side plates and the circle center is 3/2-4/3 radiuses.
5. The laboratory particle screening apparatus of claim 2, wherein: the second material blocking structure comprises a second fixed baffle and a second movable baffle which are parallel to the central axis of the drum screen, the fixed end of the second fixed baffle is fixed on the inner side of the edge of the screening part with the hole, and the cantilever end of the second fixed baffle corresponds to the second movable baffle; one end of the second movable baffle is hinged to the inner side of the other edge of the screening part with the holes, and the movable end of the second movable baffle can be in lap joint with the cantilever end of the second fixed baffle and is arranged towards one side of the solid part without holes; the rotation angle of the second movable baffle relative to the second fixed baffle is 0-45 degrees.
6. A laboratory particle screening apparatus according to any one of claims 1 to 5, wherein: the blanking assembly comprises a charging hopper and a feeding hopper which are connected with the frame, the charging hopper and the feeding hopper are both funnel-shaped with an opening at the upper part, the lower end opening of the charging hopper is arranged above the feeding hopper, and the lower end opening of the feeding hopper is matched with the outer wall of the drum screen; the lower extreme opening part of charging hopper is equipped with the horizontal picture peg that can the pull.
7. The laboratory particle screening apparatus of claim 6, wherein: the rotary screen is characterized in that a shell matched with the rotary screen in shape is arranged outside the rotary screen, the shell is fixed on the rack, an opening at the lower end of the feeding hopper is in butt joint with an opening at the top of the shell, a main shaft in the middle of the rotary screen is connected with the first power component, and shaft clamping grooves matched with the main shaft are formed in two ends of the shell.
8. The laboratory particle screening apparatus of claim 7, wherein: the feeding hopper consists of a left scraping plate, a right scraping plate and two side baffles, the left scraping plate and the right scraping plate are respectively arranged above two ends of the drum screen, the two side baffles are arranged in an acute angle, and the lower ends of the two side baffles are parallel to a bus of the drum screen; two sides of the left scraping plate and the right scraping plate are abutted against the inner walls of the side baffles, and two ends of the left scraping plate and the right scraping plate are erected at the tops of the two side baffles and can slide along the length direction of the side baffles; the lower ends of the two side baffles are fixedly connected with two sides of a rectangular opening at the top of the shell, and the lower ends of the left scraping plate and the right scraping plate are abutted against two ends of the rectangular opening at the top of the shell.
9. The laboratory particle screening apparatus of claim 8, wherein: the lower ends of the left scraping plate and the right scraping plate are provided with brushes, and the inner sides of the connecting parts of the two side baffles and the shell are provided with brushes.
10. The laboratory particle screening apparatus of claim 6, wherein: the charging hopper is in sliding fit with a sliding rail at the top of the rack, the charging hopper is driven by a power component II, the power component II is arranged on the rack, and the sliding rail is parallel to the central axis of the drum screen.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201920478997.XU CN209968856U (en) | 2019-04-10 | 2019-04-10 | Laboratory particle screening device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201920478997.XU CN209968856U (en) | 2019-04-10 | 2019-04-10 | Laboratory particle screening device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN209968856U true CN209968856U (en) | 2020-01-21 |
Family
ID=69257241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201920478997.XU Active CN209968856U (en) | 2019-04-10 | 2019-04-10 | Laboratory particle screening device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN209968856U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109865657A (en) * | 2019-04-10 | 2019-06-11 | 中国建设基础设施有限公司 | Laboratory particle screening device and particulate material screening technique |
CN112495595A (en) * | 2020-11-18 | 2021-03-16 | 安徽景图机械科技有限公司 | Rotary full-automatic rice sieving machine |
CN112691886A (en) * | 2020-11-25 | 2021-04-23 | 中科云健康(甘肃)有限公司 | Screening processingequipment behind chinese herbal medicine section |
-
2019
- 2019-04-10 CN CN201920478997.XU patent/CN209968856U/en active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109865657A (en) * | 2019-04-10 | 2019-06-11 | 中国建设基础设施有限公司 | Laboratory particle screening device and particulate material screening technique |
CN112495595A (en) * | 2020-11-18 | 2021-03-16 | 安徽景图机械科技有限公司 | Rotary full-automatic rice sieving machine |
CN112495595B (en) * | 2020-11-18 | 2022-04-19 | 安徽仝芯机械科技有限公司 | Rotary full-automatic rice sieving machine |
CN112691886A (en) * | 2020-11-25 | 2021-04-23 | 中科云健康(甘肃)有限公司 | Screening processingequipment behind chinese herbal medicine section |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN209968856U (en) | Laboratory particle screening device | |
CN109865657A (en) | Laboratory particle screening device and particulate material screening technique | |
CN106824811A (en) | A kind of color selector distribution device | |
CN112108364B (en) | Soil sampling test device of engineering supervision usefulness | |
CN111451142B (en) | Energy-concerving and environment-protective type building engineering construction building materials sieving mechanism for grit | |
CN208661700U (en) | A kind of husky equipment of sieve for building | |
CN208131255U (en) | A kind of deironing apparatus in castable production process | |
CN111687030A (en) | Novel chemical material screening machine for chemical industry | |
CN210589890U (en) | Casting machine for reproducible concrete | |
CN213761995U (en) | Waste commodity concrete crushing device | |
CN212550367U (en) | Drum-type sand screening machine | |
CN211586955U (en) | Device for manufacturing water-based paint | |
CN211436934U (en) | Sand screening machine for architectural decoration | |
CN114102857A (en) | Concrete mixing device for building | |
CN213468612U (en) | Waste concrete separating device for concrete processing | |
CN112473833A (en) | A device for building grit is broken to screen and is separated | |
CN219253266U (en) | Fine stripping vibrating screen for asphalt pavement reclaimed materials | |
CN216728089U (en) | Stone aggregate sorting device | |
CN220048279U (en) | Raw material grinding device | |
CN217830793U (en) | Low-density composite ball filtering and screening device | |
CN215465901U (en) | Concrete waste water recovery device | |
CN210585931U (en) | High-activity seed magnetic separation grading plant | |
CN115228585B (en) | Cement raw material crushing and filtering device | |
CN215997578U (en) | Grit separator and grit transmission device thereof | |
CN203494759U (en) | Sand grain recycling machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |