CN207287975U - The classifying screen sand equipment of construction - Google Patents

Abstract

The utility model provides a kind of classifying screen sand equipment of construction, including tank body；The tank body is arranged to hollow cuboid of the section for square, and tank body top open part is provided with upper cover, and tank base opening is provided with bottom cover；Drying chamber and screening chamber are separated into by partition plate in the middle part of tank body；Drying device is provided with the drying chamber；Sieving plate and screening plant are provided with the screening chamber；Feed arrangement is provided with tank wall；The sand that the utility model is added feed hopper by feed arrangement being added in tank body at the uniform velocity, is also beneficial to the labor intensity for mitigating worker；By the setting of drying device, the sand fallen in material guiding plate is stirred using three layers of rotating stock guide, the hot-air for being blasted air-heater using three layers of rotating wind-distributing pipe is evenly distributed with, fully dry easy to be carried out to sand；Gradation sizing is carried out to the dried sand fallen in sieving plate upper surface by screening plant, improves screening quality.

Description

The classifying screen sand equipment of construction

Technical field

A kind of Architectural Equipment is the utility model is related to, is specifically a kind of classifying screen sand equipment of construction.

Background technology

Construction refers to the production activity of engineering construction implementation phase, is the building course of all kinds of buildings, can also Say it is various lines on design drawing, in specified place, become process in kind.It includes basic engineering construction, master Body structure construction, roof construction, decorative engineering construction etc..The sand of variable grain degree is needed during building construction Son, but the sand of sand variable grain degree before use mixes, and is not easy to carry out classified utilization, it is necessary to divide sand Packing phenomenon easily occurs inside equipment, causes screening efficiency to become for level screening, existing sand screening plant, sand, and husky Son often contains large quantity of moisture when transporting to job location in sand, if precipitation point is not removed, sand is easily embraced agglomerating, leads Screening is caused to be normally carried out.

Utility model content

In view of the above shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a kind of construction use Classifying screen sand equipment.

In order to solve the above technical problems, the utility model provides following technical solution：

A kind of classifying screen sand equipment of construction, including tank body；The tank body is arranged to sky of the section for square Heart cuboid, tank body top open part are provided with upper cover, and tank base opening is provided with bottom cover；Pass through partition plate point in the middle part of tank body It is divided into drying chamber and screening chamber；Drying device is provided with the drying chamber；The drying device by the first motor, installing plate, Blast pipe, air-heater, first gear, second gear, guide duct, material guiding plate, stock guide and wind-distributing pipe composition；First motor Installing plate upper surface is bolted on, and the main shaft of the first motor is welded and fixed with first gear；The first gear with Second gear is intermeshed；The second gear is weldingly fixed in wind-guiding pipe outer wall；The guide duct by rolling bearing with Installing plate is connected with upper cover, and is socketed at the top of guide duct with air blast bottom of the tube, and clearance fit；The blast pipe bottom outer wall is led to Cross fixed disk and be fixed on installing plate upper surface, and air-heater is provided with blast pipe；Three are equidistantly welded with guide duct Layer stock guide and three layers of wind-distributing pipe；Material guiding plate is both provided with below each layer of stock guide and wind-distributing pipe；The material guiding plate is arranged to Disc, is connected with guide duct by rolling bearing, and material guiding plate outer wall is welded and fixed by connecting rod and inner tank wall；It is described Sieving plate and screening plant are provided with screening chamber；The sieving plate is arranged to the arc panel that section is semicircle, four side of sieving plate It is welded and fixed with inner tank wall；Screening plate surface is evenly equipped with some first screening holes, the second screening hole and the 3rd screening hole；First Sieving plate lower surface between screening hole and the second screening hole is welded and fixed by second baffle and bottom cover upper surface, and the first sieve Sieving plate lower surface on the right side of point is welded and fixed by first baffle and bottom cover upper surface；Second screening Kong Yu tri- sieve hole it Between sieving plate lower surface be welded and fixed by third baffle and bottom cover upper surface；Between the first baffle and second baffle First discharge port is provided with bottom cover；The second discharge gate is provided with bottom cover between the second baffle and third baffle；Institute State and the 3rd discharge gate is provided with the bottom cover between third baffle and tank wall；Between first discharge port and the second discharge gate Bottom cover lower surface is welded with the first marker board；Bottom cover lower surface between second discharge gate and the 3rd discharge gate is welded and fixed There is the second marker board；The screening plant is made of the second motor, screening shaft, connecting plate and material rotating plate；Second motor It is connected by the first retarder with screening shaft, and the second motor and the first retarder are bolted on tank wall； The screening shaft both ends are connected by rolling bearing with tank wall；Two layers of connection is welded with screening shaft side wall Plate, every layer of connecting plate are provided with four, and four connecting plates are angularly weldingly fixed in screening shaft；Connecting plate end and stirring Plate is welded and fixed；The corner of bottom cover lower surface four is welded with stent；Feed arrangement is provided with tank wall；It is described into Material device is made of a liter barrel, feed hopper, feed back pipe, the 3rd motor, liter material auger and exhaust fan；Described liter of barrel bottom sidewall Feed hopper is provided with, barrel top sidewall is risen and is connected by feed back pipe with upper cover；3rd motor by the second retarder with Material auger connection is risen, and the 3rd motor and the second retarder are bolted on a liter barrel top surface；Rise in barrel middle part of sliding channel It is provided with exhaust fan.

As the further improvement project of the utility model：The upper cover and bottom cover pass through the mutual rotation of screw bolt and nut Conjunction is fixedly connected with tank body, and junction is provided with sealing ring；Upper cover, tank body and bottom cover are made by steel.

As the further improvement project of the utility model：The partition plate is provided with two panels, is combined into funnel type, with tank body Inner wall is welded and fixed.

As the further improvement project of the utility model：The installing plate is arranged to U-shaped, is weldingly fixed on upper cover upper table Face.

As the further improvement project of the utility model：The material guiding plate lower surface is evenly equipped with some material guide holes.

As the further improvement project of the utility model：The stock guide and vertical guide are into 30 degree of angles.

As the further improvement project of the utility model：The wind-distributing pipe surface is evenly equipped with some wind distributing holes.

As the further improvement project of the utility model：The diameter in the first screening hole is less than the straight of the second screening hole Footpath；The diameter in the second screening hole is more than the diameter in the 3rd screening hole.

As the further improvement project of the utility model：The first discharge port, the second discharge gate and the 3rd discharge gate It is respectively provided with rectangular.

As the further improvement project of the utility model：The material rotating plate setting is rectangular, and surface is evenly equipped with some subtract Hinder hole.

As the further improvement project of the utility model：Described liter of barrel is arranged to hollow cylinder closed at both ends, And rise barrel outer wall and be fixed on by fixed plate on tank wall.

As the further improvement project of the utility model：The material auger that rises is arranged on inside liter barrel.

Compared with prior art, the beneficial effects of the utility model are：

The utility model rises material auger rotation, easy to feed by the setting of feed arrangement using the drive of the 3rd motor Struggle against sand being added in tank body at the uniform velocity added, be also beneficial to the labor intensity for mitigating worker；By being set on liter barrel side wall Exhaust fan, the moisture produced in sand drying process in tank body is extracted out, it is and available beneficial to the rate of drying for accelerating sand Moisture heats the sand in liter barrel in advance, and the heat in moisture is utilized；Pass through the setting of drying device, profit Driving force is provided with the first motor, by the transmission of first gear and second gear, drives guide duct rotation, guide duct drives three Layer stock guide and three layers of wind-distributing pipe rotation, stir the sand fallen in material guiding plate using three layers of rotating stock guide, profit The hot-air for being blasted air-heater with three layers of rotating wind-distributing pipe is evenly distributed with, fully dry easy to be carried out to sand；Three layers are led The setting of charging tray, for slowing down the speed of sand whereabouts, extends distance of fall, easy to be come into full contact with hot-air, improves The dry mass of sand；By the setting of screening plant, screening shaft rotation is driven using the second motor, screening shaft passes through company Fishplate bar drives material rotating plate rotation, and the dried sand fallen in sieving plate upper surface is stirred using rotating material rotating plate, Easy to be mutually shifted between the grains of sand, hole is sieved by the first screening hole, the second screening hole and the 3rd easy to the sand of different-diameter, Gradation sizing is convenient for, improves screening quality.

Brief description of the drawings

Fig. 1 is the structure diagram of the classifying screen sand equipment of construction；

Fig. 2 be construction classifying screen sand equipment in drying device structure diagram；

Fig. 3 be construction classifying screen sand equipment in sieving plate structure diagram；

Fig. 4 be construction classifying screen sand equipment in screening plant structure diagram；

Fig. 5 be construction classifying screen sand equipment in feed arrangement structure diagram.

In figure：1- upper covers, 2- feed arrangements, 3- drying chambers, 4- screening chambers, 5- tank bodies, 6- stents, 7- bottom covers, 8- screenings Plate, 9- screening plants, 10- partition plates, 11- drying devices, the first motors of 12-, 13- blast pipes, 14- air-heaters, 15- fixed disks, 16- and gear, 17- connecting rods, 18- material guiding plates, 19- material guide holes, 20- stock guides, 21- wind-distributing pipes, 22- wind distributing holes, 23- One gear, 24- installing plates, 25- the 3rd sieve hole, and 26- second sieves hole, and 27- first sieves hole, 28- first baffles, 29- the One discharge gate, the first marker boards of 30-, 31- second baffles, the second discharge gates of 32-, the second marker boards of 33-, the 3rd discharge gates of 34-, 35- third baffles, 36- material rotating plates, 37- drag reductions hole, the first retarders of 38-, the second motors of 39-, 40- connecting plates, 41- screenings turn Axis, the 3rd motors of 42-, the second retarders of 43-, 44- rise material auger, 45- exhaust fans, 46- feed hoppers, 47- fixed plates, 48- liters Barrel, 49- feed back pipes, 50- guide ducts.

Embodiment

The technical solution of this patent is described in more detail with reference to embodiment.

The embodiment of this patent is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached The embodiment of figure description is exemplary, and is only used for explaining this patent, and it is not intended that limitation to this patent.

In the description of this patent, it is to be understood that term " " center ", " on ", " under ", "front", "rear", " left side ", The orientation or position relationship of the instruction such as " right side ", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are based on shown in the drawings Orientation or position relationship, are for only for ease of description this patent and simplify and describe, rather than instruction or imply signified device or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to this patent.

, it is necessary to illustrate in the description of this patent, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection ", " setting " should be interpreted broadly, for example, it may be being fixedly linked, setting or be detachably connected, set Put, or be integrally connected, set.For the ordinary skill in the art, it can understand that above-mentioned term exists with concrete condition Concrete meaning in this patent.

Please refer to Fig.1 and Fig. 3, present embodiments provide a kind of classifying screen sand equipment of construction, including tank body 5； The tank body 5 is arranged to hollow cuboid of the section for square, and 5 top open part of tank body is provided with upper cover 1,5 bottom of tank body Opening is provided with bottom cover 7；The upper cover 1 and bottom cover 7 are fixedly connected by mutually screwing for screw bolt and nut with tank body 5, And junction is provided with sealing ring；Upper cover 1, tank body 5 and bottom cover 7 are made by steel；The middle part of tank body 5 is separated into by partition plate 10 Drying chamber 3 and screening chamber 4；The partition plate 10 is provided with two panels, is combined into funnel type, is welded and fixed with 5 inner wall of tank body, for inciting somebody to action Dried sand is concentrated to the middle part of tank body 5；Drying device 11 is provided with the drying chamber 3；Pass through setting for drying device 11 Put, processing is dried to the sand being added in tank body 5, easy to carry out gradation sizing recycling to sand；In the screening chamber 4 It is provided with sieving plate 8 and screening plant 9；The sieving plate 8 is arranged to the arc panel that section is semicircle, 8 four side of sieving plate and tank 5 inner wall of body is welded and fixed；8 surface of sieving plate is evenly equipped with some first screening holes 27, second and sieves the screening hole 25 of hole 26 and the 3rd； The diameter in the first screening hole 27 is less than the diameter in the second screening hole 26；The diameter in the second screening hole 26 is more than the 3rd sieve Divide the diameter in hole 25；8 lower surface of sieving plate that first screening hole 27 and second is sieved between hole 26 passes through second baffle 31 and bottom 7 upper surface of lid is welded and fixed, and 8 lower surface of sieving plate on 27 right side of the first screening hole passes through first baffle 28 and 7 upper table of bottom cover Face is welded and fixed；8 lower surface of sieving plate that second screening hole 26 and the 3rd is sieved between hole 25 passes through third baffle 35 and bottom cover 7 Upper surface is welded and fixed；First discharge port 29 is provided with bottom cover 7 between the first baffle 28 and second baffle 31；It is described The second discharge gate 32 is provided with bottom cover 7 between second baffle 31 and third baffle 35；The third baffle 35 and 5 side of tank body The 3rd discharge gate 34 is provided with bottom cover 7 between wall；The first discharge port 29, the second discharge gate 32 and the 3rd discharge gate 34 It is respectively provided with rectangular；7 lower surface of bottom cover between 29 and second discharge gate 32 of first discharge port is welded with the first marker board 30；7 lower surface of bottom cover between second discharge gate 32 and the 3rd discharge gate 34 is welded with the second marker board 33；Pass through first The setting of 30 and second marker board 33 of marker board, to screening out the three-level sand come point lead, and prevents from sieving the sand to come It is admixed together again；Bottom cover 7 lower surface four corner is welded with stent 6；By the setting of screening plant 9, to dry Sand after dry is stirred, easy to carry out three-level screening to sand；Feed arrangement 2 is provided with 5 outer wall of tank body；Pass through charging The setting of device 2, easy to being added in tank body 5 at the uniform velocity by sand, and beneficial to the labor intensity for mitigating worker.

Referring to Fig. 2, in the utility model, the drying device 11 by the first motor 12, installing plate 24, blast pipe 13, Air-heater 14, first gear 16, second gear 23, guide duct 50, material guiding plate 18, stock guide 20 and wind-distributing pipe 21 form；It is described First motor 12 is bolted on 24 upper surface of installing plate, and the main shaft of the first motor 12 and the welding of first gear 23 are solid It is fixed；The installing plate 24 is arranged to U-shaped, is weldingly fixed on 1 upper surface of upper cover；The first gear 23 and second gear 16 are mutual Engagement；The second gear 16 is weldingly fixed on 50 outer wall of guide duct；The guide duct 50 passes through rolling bearing and installing plate 24 and upper cover 1 connect, and the top of guide duct 50 is socketed with 13 bottom of blast pipe, and clearance fit；Outside 13 bottom of blast pipe Wall is fixed on 24 upper surface of installing plate by fixed disk 15, and air-heater 14 is provided with blast pipe 13；First-class of guide duct 50 Away from being welded with three layers of stock guide 20 and three layers of wind-distributing pipe 21；Each layer of stock guide 20 and the lower section of wind-distributing pipe 21 are both provided with and lead Charging tray 18；The material guiding plate 18 is arranged to disc, is connected with guide duct 50 by rolling bearing, and 18 outer wall of material guiding plate passes through Connecting rod 17 is welded and fixed with 5 inner wall of tank body；18 lower surface of material guiding plate is evenly equipped with some material guide holes 19；Stock guide 20 and vertical guide Into 30 degree of angles；21 surface of wind-distributing pipe is evenly equipped with some wind distributing holes 22；By the setting of drying device 11, the first motor 12 is utilized Offer drives, and by the transmission of first gear 23 and second gear 16, drives guide duct 50 to rotate, guide duct 50 drives three layers Stock guide 20 and three layers of wind-distributing pipe 21 rotate, and are turned over using three layers of rotating stock guide 20 to falling the sand in material guiding plate 18 It is dynamic, the hot-air that air-heater 14 blasts is evenly distributed with using three layers of rotating wind-distributing pipe 21, it is fully dry easy to be carried out to sand It is dry；The setting of three layers of material guiding plate 18, for slowing down the speed of sand whereabouts, extends distance of fall, easy to be filled with hot-air Tap is touched, and improves the dry mass of sand.

Referring to Fig. 4, in the utility model, the screening plant 9 is by the second motor 39, screening shaft 41, connecting plate 40 Formed with material rotating plate 36；Second motor 39 is connected by the first retarder 38 with screening shaft 41, and 39 He of the second motor First retarder 38 is bolted on 5 outer wall of tank body；Screening 41 both ends of shaft pass through rolling bearing and 5 side of tank body Wall connects；Two layers of connecting plate 40 is welded with screening 41 side wall of shaft, every layer of connecting plate 40 is provided with four, four connections Plate 40 is angularly weldingly fixed in screening shaft 41；40 end of connecting plate is welded and fixed with material rotating plate 36；The material rotating plate 36 Set rectangular, surface is evenly equipped with some drag reduction holes 37；By the setting of screening plant 9, driven and sieved using the second motor 39 Shaft 41 rotates, and screening shaft 41 drives material rotating plate 36 to rotate by connecting plate 40, is being sieved using rotating material rotating plate 36 to falling The dried sand of 8 upper surface of scoreboard is stirred, and easy to be mutually shifted between the grains of sand, is passed through easy to the sand of different-diameter First screening hole 27, second sieves hole 26 and the 3rd and sieves hole 25, is convenient for gradation sizing, improves screening quality.

Referring to Fig. 5, in the utility model, the feed arrangement 2 is by liter barrel 48, feed hopper 46, feed back pipe the 49, the 3rd Motor 42, rise and expect that auger 44 and exhaust fan 45 form；Described liter of barrel 48 is arranged to hollow cylinder closed at both ends, and rises material 48 outer walls of cylinder are fixed on 5 outer wall of tank body by fixed plate 47；Rise 48 bottom sidewall of barrel and be provided with feed hopper 46, rise barrel 48 Top sidewall is connected by feed back pipe 49 with upper cover 1；3rd motor 42 is connected by the second retarder 43 with rising material auger 44 Connect, and the 3rd motor 42 and the second retarder 43 are bolted on 48 top surface of liter barrel；The material auger 44 that rises is arranged on Rise inside barrel 48；Rise and be provided with exhaust fan 45 in 48 middle part of sliding channel of barrel；By the setting of feed arrangement 2, the 3rd electricity is utilized Machine 42, which drives, to be risen material auger 44 and rotates, and easy to the sand that adds feed hopper 46 being added in tank body 5 at the uniform velocity, is also beneficial to mitigate The labor intensity of worker；By the exhaust fan 45 set on 48 side wall of liter barrel, by what is produced in sand drying process in tank body 5 Moisture is extracted out, beneficial to the rate of drying of quickening sand, and the sand in liter barrel 48 is heated in advance using moisture, right Heat in moisture is utilized.

The operation principle of the utility model is：Sand to be dried is at the uniform velocity added into tank body 5 by feed arrangement 2, is sieved Son is fully dried under the action of drying device 11, and dried sand is dropped into screening chamber 4, passes through screening plant 9 Sieving plate 8 is coordinated to carry out three-level screening to sieve.

The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party Formula, can also be on the premise of this patent objective not be departed from the knowledge that one skilled in the relevant art possesses Make a variety of changes.

Claims (10)

1. a kind of classifying screen sand equipment of construction, including tank body（5）；It is characterized in that the tank body（5）It is arranged to section For the hollow cuboid of square, tank body（5）Top open part is provided with upper cover（1）, tank body（5）Bottom is provided with bottom opening Lid（7）；Tank body（5）Middle part passes through partition plate（10）It is separated into drying chamber（3）With screening chamber（4）；The drying chamber（3）In be provided with Drying device（11）；The drying device（11）By the first motor（12）, installing plate（24）, blast pipe（13）, air-heater（14）、 First gear（16）, second gear（23）, guide duct（50）, material guiding plate（18）, stock guide（20）And wind-distributing pipe（21）Composition；Institute State the first motor（12）It is bolted on installing plate（24）Upper surface, and the first motor（12）Main shaft and first gear （23）It is welded and fixed；The first gear（23）With second gear（16）Intermeshing；The second gear（16）It is welded and fixed In guide duct（50）On outer wall；The guide duct（50）Pass through rolling bearing and installing plate（24）And upper cover（1）Connection, and wind-guiding Pipe（50）Top and blast pipe（13）Bottom is socketed, and clearance fit；The blast pipe（13）Bottom outer wall passes through fixed disk （15）It is fixed on installing plate（24）Upper surface, and blast pipe（13）On be provided with air-heater（14）；Guide duct（50）It is upper equidistant It is welded with three layers of stock guide（20）With three layers of wind-distributing pipe（21）；Each layer of stock guide（20）And wind-distributing pipe（21）Lower section is all provided with It is equipped with material guiding plate（18）；The material guiding plate（18）It is arranged to disc, with guide duct（50）Connected by rolling bearing, and guide Disk（18）Outer wall passes through connecting rod（17）With tank body（5）Inner wall is welded and fixed；The screening chamber（4）In be provided with sieving plate（8） And screening plant（9）；The sieving plate（8）It is arranged to the arc panel that section is semicircle, sieving plate（8）Four sides and tank body（5）It is interior Wall is welded and fixed；Sieving plate（8）Surface is evenly equipped with some first screening holes（27）, second screening hole（26）With the 3rd screening hole （25）；First screening hole（27）With the second screening hole（26）Between sieving plate（8）Lower surface passes through second baffle（31）The bottom of with Lid（7）Upper surface is welded and fixed, and the first screening hole（27）The sieving plate on right side（8）Lower surface passes through first baffle（28）The bottom of with Lid（7）Upper surface is welded and fixed；Second screening hole（26）With the 3rd screening hole（25）Between sieving plate（8）Lower surface passes through Three baffles（35）With bottom cover（7）Upper surface is welded and fixed；The first baffle（28）And second baffle（31）Between bottom cover（7） On be provided with first discharge port（29）；The second baffle（31）With third baffle（35）Between bottom cover（7）On be provided with Two discharge gates（32）；The third baffle（35）With tank body（5）Bottom cover between side wall（7）On be provided with the 3rd discharge gate （34）；First discharge port（29）With the second discharge gate（32）Between bottom cover（7）Lower surface is welded with the first marker board （30）；Second discharge gate（32）With the 3rd discharge gate（34）Between bottom cover（7）Lower surface is welded with the second marker board （33）；The screening plant（9）By the second motor（39）, screening shaft（41）, connecting plate（40）And material rotating plate（36）Composition；Institute State the second motor（39）Pass through the first retarder（38）With sieving shaft（41）Connection, and the second motor（39）With the first retarder （38）It is bolted on tank body（5）On outer wall；The screening shaft（41）Both ends pass through rolling bearing and tank body（5）Side wall Connection；Sieve shaft（41）Two layers of connecting plate is welded with side wall（40）, every layer of connecting plate（40）It is provided with four, four Connecting plate（40）Angularly it is weldingly fixed on screening shaft（41）On；Connecting plate（40）End and material rotating plate（36）It is welded and fixed； Bottom cover（7）The corner of lower surface four is welded with stent（6）；Tank body（5）Feed arrangement is provided with outer wall（2）；It is described Feed arrangement（2）By a liter barrel（48）, feed hopper（46）, feed back pipe（49）, the 3rd motor（42）, rise material auger（44）And exhausting Machine（45）Composition；Described liter of barrel（48）Bottom sidewall is provided with feed hopper（46）, rise barrel（48）Top sidewall passes through feed back Pipe（49）With upper cover（1）Connection；3rd motor（42）Pass through the second retarder（43）With a liter material auger（44）Connection, and the Three motors（42）With the second retarder（43）It is bolted on a liter barrel（48）Top surface；Rise barrel（48）Set in middle part of sliding channel It is equipped with exhaust fan（45）.

2. the classifying screen sand equipment of construction according to claim 1, it is characterized in that, the upper cover（1）And bottom cover （7）By screw bolt and nut mutually screw and tank body（5）It is fixedly connected, and junction is provided with sealing ring；Upper cover（1）、 Tank body（5）And bottom cover（7）It is made by steel.

3. the classifying screen sand equipment of construction according to claim 1, it is characterized in that, the partition plate（10）It is provided with Two panels, is combined into funnel type, with tank body（5）Inner wall is welded and fixed.

4. the classifying screen sand equipment of construction according to claim 1, it is characterized in that, the installing plate（24）Set Into U-shaped, upper cover is weldingly fixed on（1）Upper surface.

5. the classifying screen sand equipment of construction according to claim 1, it is characterized in that, the material guiding plate（18）Following table Face is evenly equipped with some material guide holes（19）.

6. the classifying screen sand equipment of construction according to claim 1, it is characterized in that, the stock guide（20）With lead Vertical plane is into 30 degree of angles.

7. the classifying screen sand equipment of construction according to claim 1, it is characterized in that, the wind-distributing pipe（21）Surface It is evenly equipped with some wind distributing holes（22）.

8. the classifying screen sand equipment of construction according to claim 1, it is characterized in that, the first screening hole（27） Diameter be less than second screening hole（26）Diameter；The second screening hole（26）Diameter be more than the 3rd screening hole（25）It is straight Footpath.

9. the classifying screen sand equipment of construction according to claim 1, it is characterized in that, the first discharge port （29）, the second discharge gate（32）With the 3rd discharge gate（34）It is respectively provided with rectangular.

10. the classifying screen sand equipment of construction according to claim 1, it is characterized in that, the material rotating plate（36）If Rectangle is set to, surface is evenly equipped with some drag reduction holes（37）.