CN211887891U - Screening sand device for building engineering - Google Patents

Abstract

The utility model provides a screening sand device for building engineering belongs to building engineering technical field. This screening sand device for building engineering includes base subassembly, screening subassembly, defeated material subassembly and stirring subassembly. The base assembly comprises a housing, a first blanking plate, a second blanking plate and a third blanking plate. The third motor rotates, the third motor drives the pivot and rotates, the puddler rotates along with the pivot, add the sand by the feed inlet, the puddler stirs the sand motion, realize breaking up the mesh of agglomerating the sand, surplus sand on the screening board of first screening piece, at the screening board shake in-process, surplus sand is along the screening board bottom landing of first screening piece, the sand after the screening board screening of second screening piece falls in third flitch down, reach the effect of secondary screening sand, agglomerate the sand through breaking up and secondary screening effectively improves the screening effect, and then the unsatisfactory problem of current screening sand device screening effect of effectual improvement.

Description

Screening sand device for building engineering

Technical Field

The utility model relates to a building engineering field particularly, relates to a screening sand device for building engineering.

Background

The sand is an indispensable material in the engineering construction, often need carry out a large amount of sieve sands in the engineering construction, gets rid of the large granule sand in the sand and some impurity, makes the purity of material improve, can increase building engineering's quality, and at present, the screening sand device is single-deck screening, and the screening in-process can't break up the sand that condenses into the group, and then makes the screening effect of screening sand device unsatisfactory.

SUMMERY OF THE UTILITY MODEL

In order to compensate above not enough, the utility model provides a screening sand device for building engineering aims at improving the unsatisfactory problem of current screening sand device screening effect.

The utility model discloses a realize like this:

a sand screening device for constructional engineering comprises a base component, a screening component, a material conveying component and a stirring component.

The base component comprises a shell, a first blanking plate, a second blanking plate and a third blanking plate, wherein a first blanking port and a second blanking port are arranged on one side of the shell, a third blanking port is arranged on the other side of the shell, the first blanking plate is fixedly connected into the upper end of the shell, the first blanking plate is obliquely arranged, the lower end of the first blanking plate extends out of the shell through the first blanking port, the third blanking plate is fixedly connected to the lower end of the shell, the third blanking plate is obliquely arranged, the oblique direction of the third blanking plate is opposite to the oblique direction of the first blanking plate, the lower end of the third blanking plate extends out of the shell through the third blanking port, the second blanking plate is obliquely arranged, the oblique direction of the second blanking plate is opposite to the oblique direction of the third blanking plate, and the second blanking plate is fixedly connected to the shell, the upper end of the second lower plate is fixedly connected to the lower side of the third lower plate, the lower end of the second lower plate extends out of the shell through the second lower opening, the screening assembly comprises a first screening part and a second screening part, the first screening part and the second screening part respectively comprise a screening plate, a connecting plate, a first motor and a swinging plate, the screening plate is obliquely arranged, the screening plate of the first screening part and the screening plate of the second screening part are inclined in opposite directions, the lower end of the screening plate of the first screening part is rotatably connected to the upper end of the first lower plate, the lower end of the screening plate of the second screening part is rotatably connected to the upper end of the third lower plate, the shell is provided with a through hole, the through hole is arranged corresponding to the screening plate, and the upper end of the screening plate extends out of the shell through hole, first motor fixed connection in the outside of shell, swing board one end fixed connection in the first motor output, connecting plate one end rotate connect in the swing board other end, the connecting plate other end rotate connect in the screening board upper end, screening hole has evenly been seted up on the screening board, defeated material subassembly includes first casing, screw propeller and second motor, first casing lower extreme is provided with first discharge opening, first discharge opening with shell upper end intercommunication, first casing fixed connection in the shell upper end, screw propeller rotate connect in both ends in the first casing, screw propeller one end fixed connection in the second motor output, second motor fixed connection in the first casing is outside, the stirring subassembly includes second casing, pivot, a, Puddler and third motor, the feed inlet has been seted up to second casing one side, the second discharge opening has been seted up to second casing bottom, second casing fixed connection in first casing top, the second discharge opening communicate in first casing, the second discharge opening is located first casing is kept away from first discharge opening one side, the pivot rotate connect in second casing top, the puddler evenly connect in the pivot is peripheral, the puddler is located in the second casing, pivot top fixed connection in third motor output, third motor fixed connection in second casing top.

In an embodiment of the present invention, the bottom end of the housing is fixedly connected to the supporting member.

In an embodiment of the present invention, the support member includes a leg and a connecting rod, the leg is fixedly connected to the bottom end of the housing, and the connecting rod is fixedly connected between the legs.

In an embodiment of the present invention, the bottom end of the supporting leg is fixedly connected with a universal wheel.

The utility model discloses an in the embodiment, the shell is inside to be close to third feed opening one side fixedly connected with guide plate, guide plate is located first screening spare with between the second screening spare, guide plate slope sets up, guide plate slope direction with the second screening spare is the same.

In an embodiment of the present invention, the housing includes a third housing and a cover plate, one side of the cover plate is rotatably connected to the third housing, and the other side of the cover plate is fixedly connected to the third housing.

In an embodiment of the present invention, a first sealing gasket is disposed between the third housing and the cover plate, and the first sealing gasket is fixedly connected to the third housing.

In an embodiment of the present invention, a handle is fixedly connected to one side of the third casing.

In an embodiment of the present invention, the handle member includes a handle and an anti-slip sleeve, the handle is fixedly connected to one side of the third housing, and the anti-slip sleeve is fixedly connected to the handle.

In an embodiment of the present invention, the through hole is formed on the housing, and a second sealing pad is fixedly connected to both sides of the through hole, and the second sealing pad is attached to both sides of the sieving plate.

The utility model has the advantages that: the utility model relates to a building engineering sand screening device that obtains through the above design, when using, the third motor rotates, the third motor drives the pivot to rotate, the puddler rotates along with the pivot, add sand by the feed inlet, the puddler stirs sand motion, the sand that condenses into a group is broken up, realize breaking up the purpose of condensing into a group of sand, the sand after the stirring falls down by the second discharge opening, the second motor rotates, the second motor drives the screw propeller to rotate, the screw propeller drives the sand that the second discharge opening falls down and moves to first discharge opening department, the sand falls down by the first discharge opening, the sand falls on the screening plate upper surface of first screening piece, realize the effect of carrying sand, the first motor drives the swing plate to do circular motion, the connecting plate lower extreme moves along with the swing plate, the upper end of connecting plate reciprocates from top to bottom, screening plate one end moves along with the connecting plate, the other end of screening plate reciprocates around the round pin axle of first discharge plate upper end department, the sand falling on the screening plate shakes along with the screening plate to achieve the screening effect, the sand screened by the screening plate of the first screening piece falls on the first blanking plate and is discharged from the first blanking port, and the residual sand on the screening plate of the first screening piece, in the shaking process of the screening plate, the rest sand slides down along the bottom end of the screening plate of the first screening part, the rest sand falls on the second screening part, the sand screened by the screening plate of the second screening part falls on the third blanking plate and is discharged from the third blanking port, the screened large-particle sand and impurities slide down along the bottom end of the screening plate of the second screening part, the screened large-particle sand and impurities fall on the second blanking plate and are discharged from the second blanking port, and the secondary screening effect is achieved, effectively improve the screening effect through break up the conglomeration sand that condenses and secondary screening, and then the unsatisfactory problem of current screening sand device screening effect of effectual improvement.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a sand sieving device for construction engineering according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a base assembly according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a housing according to an embodiment of the present invention;

FIG. 4 is a schematic view of a handle member according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a support member according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a screen assembly according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a first sifting element according to an embodiment of the present invention;

FIG. 8 is a schematic view of a feeding assembly according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a stirring assembly according to an embodiment of the present invention.

In the figure: 100-a base assembly; 110-a housing; 111-a third housing; 112-a cover plate; 113-a handle piece; 1131-handle; 1132-slip-resistant sleeve; 114-a first gasket; 120-a first blanking plate; 130-a first feed opening; 140-a second feed opening; 150-a support; 151-legs; 152-a connecting rod; 153-universal wheels; 160-a second blanking plate; 170-a third blanking plate; 180-a third feed opening; 190-a primer plate; 200-screen assemblies; 210-a first sizing element; 211-a screening plate; 212-a connecting plate; 213-a first motor; 214-a swing plate; 215-sieving pores; 216 — a second gasket; 217-via holes; 220-a second sizing element; 300-a material conveying component; 310-a first housing; 320-a screw propeller; 330-a second motor; 340-a first discharge opening; 400-a stirring assembly; 410-a second housing; 420-a rotating shaft; 430-a stirring rod; 440-a third motor; 450-feed inlet; 460-second discharge opening.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are 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.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1, the utility model provides a screening sand device for building engineering, including base subassembly 100, screening subassembly 200, defeated material subassembly 300 and stirring subassembly 400, base subassembly 100 is used for supporting and fixed screening subassembly 200, defeated material subassembly 300 and stirring subassembly 400, and screening subassembly 200 is arranged in screening sand large granule sand and some impurity, and defeated material subassembly 300 is arranged in carrying sand, and stirring subassembly 400 is used for stirring sand, breaks up the sand that condenses into a group.

Referring to fig. 2, the base assembly 100 includes a housing 110, a first blanking plate 120, a second blanking plate 160, and a third blanking plate 170, wherein one side of the housing 110 is provided with a first blanking opening 130 and a second blanking opening 140, the other side of the housing 110 is provided with a third blanking opening 180, the first blanking plate 120 is fixedly connected in the upper end of the housing 110, the first blanking plate 120 is fixedly connected to the housing 110 by welding, the first blanking plate 120 is disposed in an inclined manner, the lower end of the first blanking plate 120 extends out of the housing 110 through the first blanking opening 130, the third blanking plate 170 is fixedly connected to the lower end of the housing 110, the third blanking plate 170 is fixedly connected to the housing 110 by welding, the third blanking plate 170 is disposed in an inclined manner, the inclination direction of the third blanking plate 170 is opposite to the inclination direction of the first blanking plate 120, the lower end of the third blanking plate 170 extends out of the housing 110 through the third blanking opening, the inclination direction of the second blanking plate 160 is opposite to the inclination direction of the third blanking plate 170, the second blanking plate 160 is fixedly connected to the housing 110, the upper end of the second blanking plate 160 is fixedly connected to the lower side of the third blanking plate 170, the second blanking plate 160 and the third blanking plate 170 are of an integrated structure, the lower end of the second blanking plate 160 extends out of the housing 110 through the second blanking port 140, a material guiding plate 190 is fixedly connected to one side of the inside of the housing 110 close to the third blanking port 180, the material guiding plate 190 is fixedly connected to the housing 110 through welding, the material guiding plate 190 is located between the first screening piece 210 and the second screening piece 220, the material guiding plate 190 is arranged in an inclined manner, the inclination direction of the material guiding plate 190 is the same as that of the second screening piece 220, sand falling through the first screening piece 210 falls on the upper surface of the material guiding plate 190, and falls on the second screening piece 220.

Referring to fig. 3, the housing 110 includes a third casing 111 and a cover plate 112, one side of the cover plate 112 is rotatably connected to the third casing 111 through a hinge, the other side of the cover plate 112 is fixedly connected to the third casing 111 through a buckle, a first gasket 114 is disposed between the third casing 111 and the cover plate 112, the first gasket 114 is fixedly connected to the third casing 111, the first gasket 114 is bonded to the third casing 111 through glue, the buckle connection is released, the cover plate 112 is pulled, the cover plate 112 rotates around the hinge, the cover plate 112 is opened, and the parts in the third casing 111 are convenient to clean and replace.

Referring to fig. 4, a handle member 113 is fixedly connected to one side of the third housing 111, the handle member 113 includes a handle 1131 and an anti-slip sleeve 1132, the handle 1131 is fixedly connected to one side of the third housing 111, the handle 1131 is fixedly connected to the third housing 111 through a bolt or a welding, the anti-slip sleeve 1132 is fixedly connected to the handle 1131, and the anti-slip sleeve 1132 is adhered to the handle 1131 through an adhesive.

Referring to fig. 5, a support member 150 is fixedly connected to a bottom end of the housing 110, the support member 150 includes legs 151 and a connecting rod 152, the legs 151 are fixedly connected to the bottom end of the housing 110, the legs 151 are fixedly connected to the housing 110 by welding or bolts, the connecting rod 152 is fixedly connected between the legs 151 by welding or bolts, universal wheels 153 are fixedly connected to bottom ends of the legs 151, and the universal wheels 153 are fixedly connected to bottom ends of the legs 151 by bolts or screws.

Referring to fig. 6 and 7, the sieving assembly 200 includes a first sieving element 210 and a second sieving element 220, the first sieving element 210 and the second sieving element 220 both include a sieving plate 211, a connecting plate 212, a first motor 213 and a swing plate 214, the sieving plate 211 is disposed in an inclined manner, the direction of inclination of the sieving plate 211 of the first sieving element 210 is opposite to the direction of inclination of the sieving plate 211 of the second sieving element 220, the lower end of the sieving plate 211 of the first sieving element 210 is rotatably connected to the upper end of the first lower plate 120 by a pin shaft, the lower end of the sieving plate 211 of the second sieving element 220 is rotatably connected to the upper end of the third lower plate 170 by a pin shaft, the housing 110 is provided with a through hole 217, the through hole 217 is disposed corresponding to the sieving plate 211, the upper end of the sieving plate 211 extends out of the housing 110 by the through hole 217, first motor 213 fixed connection is in the outside of shell 110, first motor 213 passes through bolt fixed connection in shell 110, swing board 214 one end fixed connection is in first motor 213 output, swing board 214 passes through flat key fixed connection in first motor 213 output, connecting plate 212 one end is rotated and is connected in the swing board 214 other end through the round pin axle, the connecting plate 212 other end is rotated and is connected in screening board 211 upper end through the round pin axle, screening hole 215 has evenly been seted up on the screening board 211, the equal fixedly connected with second sealed pad 216 in through-hole 217 both sides on the shell 110, second sealed pad 216 is through gluing in shell 110, second sealed pad 216 is laminated in the upper and lower both sides of screening board 211, first.

In this example, the first motor 213 drives the oscillating plate 214 to move circularly, the lower end of the connecting plate 212 moves with the oscillating plate 214, the upper end of the connecting plate 212 moves up and down reciprocally, one end of the sieving plate 211 moves with the connecting plate 212, the other end of the sieving plate 211 rotates around the pin shaft at the upper end of the first blanking plate 120 reciprocally and at a small angle, so that the sieving plate 211 generates a shaking effect, sand falling on the sieving plate 211 shakes with the sieving plate 211 to achieve a sieving effect, the sand screened by the sieving plate 211 of the first sieving element 210 falls on the first blanking plate 120 and is discharged from the first blanking port 130, the remaining sand on the sieving plate 211 of the first sieving element 210 slides along the bottom end of the sieving plate 211 of the first sieving element 210 during shaking of the sieving plate 211, the remaining sand falls on the upper surface of the guiding plate 190, the remaining sand falls on the second sieving element 220 guided by the guiding plate 190, and the sand screened by the sieving plate 211 of the second sieving element 220 falls on the third blanking plate 170, let by third feed opening 180, large granule sand and impurity after the screening are followed the screening board 211 bottom landing of second screening piece 220, and large granule sand and impurity after the screening fall in second flitch 160 down, are let by second feed opening 140, reach the effect of secondary screening sand, effectively improve the screening effect.

Referring to fig. 8, the feeding assembly 300 includes a first casing 310, a screw propeller 320 and a second motor 330, the first casing 310 has a first discharge port 340 at a lower end thereof, the first discharge port 340 is communicated with an upper end of the casing 110, the first casing 310 is fixedly connected to the casing 110 by welding, the screw propeller 320 is rotatably connected to two ends of the first casing 310 by a bearing, one end of the screw propeller 320 is fixedly connected to an output end of the second motor 330, the screw propeller 320 is fixedly connected to an output end of the second motor 330 by a flat key, the second motor 330 is fixedly connected to an outside of the first casing 310, the second motor 330 is fixedly connected to the first casing 310 by a bolt or a screw, the second motor 330 is rotated, the screw propeller 320 is driven by the second motor 330, the screw propeller 320 drives sand to move to the first discharge port 340, the sand falls from the first discharge port 340, and falls on the upper surface of the screening plate 211 of the first screening member 210, so that the effect of conveying the sand is realized;

referring to fig. 9, the stirring assembly 400 includes a second housing 410, a rotating shaft 420, a stirring rod 430 and a third motor 440, a material inlet 450 is formed at one side of the second housing 410, a second material outlet 460 is formed at a bottom end of the second housing 410, the second housing 410 is fixedly connected to a top end of the first housing 310, the second housing 410 is fixedly connected to the first housing 310 by welding or bolts, the second material outlet 460 is communicated with the first housing 310, the second material outlet 460 is located at a side of the first housing 310 away from the first material outlet 340, the rotating shaft 420 is rotatably connected to a top end of the second housing 410 by a bearing, the stirring rods 430 are uniformly connected to a periphery of the rotating shaft 420, the stirring rods 430 are fixedly connected to a periphery of the rotating shaft 420 by welding, the stirring rods 430 are located in the second housing 410, the rotating shaft 420 is fixedly connected to an, the rotating shaft 420 is fixedly connected to the output end of the third motor 440 through a flat key, the third motor 440 is fixedly connected to the top end of the second shell 410, the third motor 440 is fixedly connected to the second shell 410 through a bolt or a screw, the third motor 440 rotates, the third motor 440 drives the rotating shaft 420 to rotate, the stirring rod 430 rotates along with the rotating shaft 420, sand is added through the feeding hole 450, the stirring rod 430 stirs the sand to move, the agglomerated sand is scattered, the purpose of scattering the agglomerated sand is achieved, the screening of the screening assembly 200 on the sand is facilitated, the screening effect is further improved, and the problem that the screening effect of the existing sand screening device is not ideal is effectively solved.

Specifically, this screening sand device for building engineering's theory of operation: when the sand conveying device is used, the third motor 440 rotates, the third motor 440 drives the rotating shaft 420 to rotate, the stirring rod 430 rotates along with the rotating shaft 420, sand is added from the feeding hole 450, the stirring rod 430 stirs the sand to move, the agglomerated sand is broken up, the purpose of breaking up the agglomerated sand is achieved, the stirred sand falls from the second discharging hole 460, the second motor 330 rotates, the second motor 330 drives the spiral propeller 320 to rotate, the spiral propeller 320 drives the sand falling from the second discharging hole 460 to move to the first discharging hole 340, the sand falls from the first discharging hole 340, the sand falls on the upper surface of the screening plate 211 of the first screening part 210, the effect of conveying the sand is achieved, the first motor 213 drives the swinging plate 214 to do circular motion, the lower end of the connecting plate 212 moves along with the swinging plate 214, the upper end of the connecting plate 212 does up-and-down reciprocating motion, one end of the screening plate 211 moves along with the connecting plate 212, the other end of the screening plate 211 rotates around the reciprocating pin shaft at the upper end of the first discharging, the sieving plate 211 generates a shaking effect, the sand falling on the sieving plate 211 shakes along with the sieving plate 211 to achieve a sieving effect, the sand screened by the sieving plate 211 of the first sieving part 210 falls on the first blanking plate 120 and is discharged by the first discharging port 130, the sand remaining on the sieving plate 211 of the first sieving part 210 slides down along the bottom end of the sieving plate 211 of the first sieving part 210 in the shaking process of the sieving plate 211, the remaining sand falls on the upper surface of the material guiding plate 190 and is guided by the material guiding plate 190 to fall on the second sieving part 220, the sand screened by the sieving plate 211 of the second sieving part 220 falls on the third blanking plate 170 and is discharged by the third discharging port 180, the screened large-particle sand and impurities slide down along the bottom end of the sieving plate 211 of the second sieving part 220, the screened large-particle sand and impurities fall on the second blanking plate 160 and are discharged by the second discharging port 140, effectively improve the screening effect through break up the conglomeration sand that condenses and secondary screening, and then the unsatisfactory problem of current screening sand device screening effect of effectual improvement.

When the sieving plate 211 is blocked or the parts in the third shell 111 need to be replaced, the connection of the hasps is released, the cover plate 112 is pulled, the cover plate 112 rotates around the hinge, the cover plate 112 is opened, and the blocked part of the sieving plate 211 can be directly cleaned or the parts need to be replaced.

It should be noted that the specific model specifications of the first motor 213, the second motor 330, and the third motor 440 need to be determined by model selection according to the actual specification of the device, and the specific model selection calculation method adopts the prior art, so detailed burdens are not needed.

The power supply of the first motor 213, the second motor 330 and the third motor 440 and the principle thereof will be apparent to those skilled in the art and will not be described in detail herein.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A sand screening device for constructional engineering is characterized by comprising

Base component (100), base component (100) includes shell (110), first flitch (120), second flitch (160) and third flitch (170) down, shell (110) one side is provided with first feed opening (130) and second feed opening (140), shell (110) opposite side is provided with third feed opening (180), first flitch (120) fixed connection in shell (110) upper end, first flitch (120) slope sets up, first flitch (120) lower extreme passes through first feed opening (130) extend the outside of shell (110), third flitch (170) fixed connection in shell (110) lower extreme, third flitch (170) slope sets up, third flitch (170) slope direction with first flitch (120) slope opposite direction, third flitch (170) lower extreme passes through third feed opening (180) extend shell (110) The second blanking plate (160) is obliquely arranged, the oblique direction of the second blanking plate (160) is opposite to the oblique direction of the third blanking plate (170), the second blanking plate (160) is fixedly connected to the shell (110), the upper end of the second blanking plate (160) is fixedly connected to the lower side of the third blanking plate (170), and the lower end of the second blanking plate (160) extends out of the shell (110) through the second blanking port (140);

the screening assembly (200) comprises a first screening piece (210) and a second screening piece (220), the first screening piece (210) and the second screening piece (220) respectively comprise a screening plate (211), a connecting plate (212), a first motor (213) and a swinging plate (214), the screening plate (211) is obliquely arranged, the screening plate (211) of the first screening piece (210) and the screening plate (211) of the second screening piece (220) are opposite in oblique direction, the lower end of the screening plate (211) of the first screening piece (210) is rotationally connected to the upper end of the first blanking plate (120), the lower end of the screening plate (211) of the second screening piece (220) is rotationally connected to the upper end of the third blanking plate (170), a through hole (217) is formed in the shell (110), and the through hole (217) and the screening plate (211) are correspondingly arranged, the upper end of the screening plate (211) extends out of the outer shell (110) through the through hole (217), the first motor (213) is fixedly connected to the outer part of the outer shell (110), one end of the swinging plate (214) is fixedly connected to the output end of the first motor (213), one end of the connecting plate (212) is rotatably connected to the other end of the swinging plate (214), the other end of the connecting plate (212) is rotatably connected to the upper end of the screening plate (211), and screening holes (215) are uniformly formed in the screening plate (211);

the material conveying assembly (300) comprises a first shell (310), a spiral propeller (320) and a second motor (330), a first discharge opening (340) is formed in the lower end of the first shell (310), the first discharge opening (340) is communicated with the upper end of the shell (110), the first shell (310) is fixedly connected to the upper end of the shell (110), the spiral propeller (320) is rotatably connected to two ends in the first shell (310), one end of the spiral propeller (320) is fixedly connected to the output end of the second motor (330), and the second motor (330) is fixedly connected to the outside of the first shell (310);

the stirring assembly (400) comprises a second shell (410), a rotating shaft (420), a stirring rod (430) and a third motor (440), a feeding hole (450) is formed in one side of the second shell (410), a second discharging opening (460) is formed in the bottom end of the second shell (410), the second shell (410) is fixedly connected to the top end of the first shell (310), the second discharging opening (460) is communicated with the first shell (310), the second discharging opening (460) is located in the side, far away from the first discharging opening (340), of the first shell (310), the rotating shaft (420) is rotatably connected to the top end of the second shell (410), the stirring rod (430) is uniformly connected to the periphery of the rotating shaft (420), the stirring rod (430) is located in the second shell (410), and the top end of the rotating shaft (420) is fixedly connected to the output end of the third motor (440), the third motor (440) is fixedly connected to the top end of the second shell (410).

2. A sand screening device for construction engineering according to claim 1, wherein a support member (150) is fixedly connected to the bottom end of the housing (110).

3. A screening device for construction engineering according to claim 2, wherein the support member (150) comprises legs (151) and a connecting rod (152), the legs (151) being fixedly connected to the bottom end of the housing (110), the connecting rod (152) being fixedly connected between the legs (151).

4. A sand screening device for construction engineering according to claim 3, wherein universal wheels (153) are fixedly connected to the bottom ends of the legs (151).

5. The sand screening device for the building engineering according to claim 1, wherein a guiding plate (190) is fixedly connected to one side of the inside of the housing (110) close to the third feed opening (180), the guiding plate (190) is located between the first screening member (210) and the second screening member (220), the guiding plate (190) is arranged in an inclined mode, and the inclined direction of the guiding plate (190) is the same as that of the second screening member (220).

6. A sand screening device for construction engineering according to claim 1, wherein the housing (110) comprises a third casing (111) and a cover plate (112), one side of the cover plate (112) is rotatably connected to the third casing (111), and the other side of the cover plate (112) is fixedly connected to the third casing (111).

7. A sand screening device for construction engineering according to claim 6, wherein a first gasket (114) is arranged between the third housing (111) and the cover plate (112), the first gasket (114) being fixedly connected to the third housing (111).

8. A sand screening device for construction engineering according to claim 6, wherein a handle member (113) is fixedly connected to one side of the third housing (111).

9. The sand screening device for construction engineering as claimed in claim 8, wherein the handle member (113) comprises a handle (1131) and an anti-slip cover (1132), the handle (1131) is fixedly connected to one side of the third shell (111), and the anti-slip cover (1132) is fixedly sleeved on the handle (1131).

10. The sand screening device for the building engineering according to claim 1, wherein a second sealing gasket (216) is fixedly connected to both sides of the through hole (217) on the shell (110), and the second sealing gasket (216) is attached to the upper side and the lower side of the screening plate (211).

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