CN112427285A

CN112427285A - Sand and soil powder sieve device for building construction

Info

Publication number: CN112427285A
Application number: CN202011198791.5A
Authority: CN
Inventors: 孙方义
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-31
Filing date: 2020-10-31
Publication date: 2021-03-02

Abstract

The invention discloses a sand powder sieving device for building construction, which comprises a bottom plate, wherein a main body bin is arranged at the top of the bottom plate, a material conveying pipe is jointly arranged at the same end of the main body bin and the bottom plate, spiral upper slurry is arranged inside the material conveying pipe, a rotating motor is arranged at the top of the material conveying pipe, the output end of the rotating motor is fixedly connected with the top end of the spiral upper slurry, and a material guide pipe is arranged at the top of one end, close to the main body bin, of the material conveying pipe. Is favorable for the popularization and the application of the device.

Description

Sand and soil powder sieve device for building construction

Technical Field

The invention relates to the technical field of sand and soil screening devices, in particular to a sand and soil screening device for building construction.

Background

The building construction refers to production activities in the engineering construction implementation stage, is the construction process of various buildings, and also can be a process of changing various lines on a design drawing into a real object at a specified place.

When the prior art is used for screening sand, the sand is often manually shoveled onto the screen to be screened, which is very laborious, and after the sand is screened for a period of time, the filtered large gravel is manually removed from the screen, so that the efficiency of screening the sand is reduced, and the labor intensity of screening personnel is greatly increased; when the conventional sand and soil screening device is used for screening sand and soil, the sand and soil are usually screened only by a group of screen meshes, so that the sand and soil can be simply screened, gravels with different sizes cannot be screened in multiple layers, the practical effect of the sand and soil screening device is reduced, and the popularization and the use of the sand and soil screening device are not facilitated; simultaneously current sand and soil silt screen device is when carrying out the silt to sand and soil, because contain a large amount of dusts in the sand and soil, can make a large amount of dusts scatter everywhere carrying out the silt screen in-process to sand and soil to influence the personnel of working on every side, reduced the result of use of this sand and soil silt screen device.

Disclosure of Invention

The invention aims to provide a sand and soil powder sieve device for building construction, which solves the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a sand and soil powder screening device for building construction comprises a bottom plate, wherein a main body bin is installed at the top of the bottom plate, a conveying pipe is installed at the same end of the main body bin and the bottom plate, spiral slurry is arranged inside the conveying pipe, a rotating motor is installed at the top of the conveying pipe, the output end of the rotating motor is fixedly connected with the top end of the spiral slurry, a material guide pipe is installed at the top of one end, close to the conveying pipe, of the main body bin, a first screening component is arranged at the inner top of the main body bin, a second screening component is arranged at the middle position inside the main body bin, a first guide plate is hinged to the bottom of one side inside the main body bin, first springs are symmetrically installed at two ends of the other side inside the main body bin, the top ends of the first springs are fixedly connected with the bottom of the first guide plate, an air pump bin is arranged at the inner bottom of the main body bin, a dust removal, the bottom of one side of the main body bin is provided with a first discharge port matched with the first guide plate, one end of the main body bin, which is close to one side of the first discharge port, is provided with a control panel, and the control panel is electrically connected with the rotating motor through a wire;

the first screening component comprises a roller, bearings, sieve pores, a driving motor, a driving gear, a driven gear and an adjusting ring, the bearings are mounted at the tops of two ends in the main bin, the rollers are mounted on the inner sides of two groups of bearings together, the sieve pores are uniformly formed in the surface of the roller, the driven gear is mounted at one end, close to the conveying pipe, of the outer side of the roller, the driving motor is mounted at the top of the main bin, the driving gear meshed with the driven gear is mounted at the output end of the driving motor, one end, far away from the conveying pipe, of the roller penetrates through the main bin and is provided with the adjusting ring, and the control panel is electrically connected;

the dust removal component comprises filter screens, an air suction pump, a filter bin, an air inlet and a guide pipe, wherein the filter bin is arranged at one end, far away from a conveying pipe, in the air pump bin;

the second screening subassembly includes second spring, sieve, connecting rod and promotes the piece, the inside intermediate position department in main part storehouse is provided with two sets of sieves, and the both ends of the adjacent one side of two sets of sieves install the connecting rod jointly, the one end that the conveying pipeline was kept away from at the sieve top is passed the main part storehouse and is installed the promotion piece of mutually supporting with the adjustable ring, the sieve bottom is close to the one end that promotes the piece and installs the second spring, and the one end that the second spring is close to the main part storehouse is connected jointly with the main part storehouse.

Preferably, the inside one end in air pump storehouse is provided with the axis of rotation, and the outside of axis of rotation evenly installs the flabellum board, the top of axis of rotation passes the top in air pump storehouse and installs the eccentric wheel of mutually supporting with first deflector.

Preferably, the four corners of the bottom plate are provided with universal wheels, and the universal wheels are provided with braking devices.

Preferably, one end of the main body bin close to the conveying pipeline is provided with two groups of second guide plates matched with the sieve plate, and the two groups of second guide plates are of a herringbone structure.

Preferably, the containing box is placed at one end, far away from the conveying pipe, of the top of the bottom plate, and the protection bin is installed at the top, far away from one end of the conveying pipe, of the main bin.

Preferably, two rows of rollers are uniformly arranged in the middle positions of two sides in the main body bin, and the tops of the rollers are tightly attached to the bottom of the sieve plate.

Preferably, the square exhaust hole is formed in one end of the bottom of one side, away from the control panel, of the main body bin, and the screen is arranged on the inner side of the square exhaust hole.

Preferably, two groups of discharge ports matched with the sieve plate are formed in the middle position of one end, close to the conveying pipe, of the main body bin.

Preferably, one side of the main body cabin close to the control panel is provided with an observation window.

Preferably, the bottom of one side of the conveying pipe, which is far away from the main body bin, is provided with a guide chute, and the bottom of the guide chute is inclined.

Compared with the prior art, the invention provides a sand and soil screening device for building construction, which has the following beneficial effects:

1. according to the invention, through the matched use of the first screening component, the main body bin, the conveying pipe, the material guide pipe, the rotating motor and the spiral slurry, an operator only needs to shovel sand into the inner bottom of the conveying pipe directly, and the sand is conveyed into the material guide pipe by the matching of the rotating motor and the spiral slurry and enters the roller through the material guide pipe, so that the device can perform powder screening on the sand, and the operator does not need to shovel the sand to a higher position in the whole process, thereby greatly reducing the labor intensity of the operator, and being beneficial to popularization and use of the device.

2. The invention uses the first screen component, the main body bin, the storage box, the bottom plate, the first guide plate, the first discharge port, the second guide plate, the first spring, the second screen component, the fan blade plate, the rotating shaft, the air pump bin and the eccentric wheel in cooperation, after sand enters the roller, the screen holes on the surface of the roller are primarily screened, so that larger gravel in the sand falls into the storage box after being guided by the roller, and gravel falling through the screen holes falls onto the top of the first group of screen plates, when the roller rotates, the screen plates are reciprocated and shaken in the main body bin through the cooperation of the adjusting ring and the pushing block, the first group of screen plates is used for screening gravel in a second step, the gravel blocked by the screen plates falls onto one group of the second guide plates along the first group of screen plates, and the gravel falling onto the top of the second group of screen plates is guided onto the second group of second guide plates after passing through the screen plates, the gravel falling to the top of the first guide plate is discharged from the first discharge port through the guide of the first guide plate, so that the gravel powder is screened into four layers, and the utilization effect of the gravel after being screened by the device is greatly improved.

3. According to the dust removal device, the main body bin, the dust removal assembly and the air pump bin are matched for use, when the dust removal device is used for screening sand, dust lifted in the main body bin is forced to enter the air inlet bin through the air inlet by the aid of the air suction pump, air with the dust enters the filter bin through the guide pipe, and enters the air pump bin after being filtered by the filter screen, so that the dust generated by screening the sand by the dust removal device is greatly prevented from flying out of the main body bin, the dust is prevented from flying around to affect surrounding workers, and the dust removal device is convenient to use normally.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a front cross-sectional view of the present invention;

FIG. 3 is a rear view of the present invention;

FIG. 4 is a rear cross-sectional view of the present invention;

FIG. 5 is a perspective view of the adjusting ring of the present invention;

FIG. 6 is a perspective view of the drum of the present invention;

FIG. 7 is an enlarged view taken at A of FIG. 2 according to the present invention.

In the figure: 1. a first screen assembly; 101. a drum; 102. a bearing; 103. screening holes; 104. a drive motor; 105. a driving gear; 106. a driven gear; 107. an adjusting ring; 2. a main body bin; 3. a control panel; 4. a storage box; 5. a base plate; 6. a first guide plate; 7. a first discharge port; 8. a second guide plate; 9. a delivery pipe; 10. a material guide pipe; 11. a rotating electric machine; 12. a first spring; 13. a dust removal assembly; 131. a filter screen; 132. an air pump; 133. a filtering bin; 134. an air inlet bin; 135. an air inlet; 136. a conduit; 14. a second screen assembly; 141. a second spring; 142. a sieve plate; 143. a connecting rod; 144. a pushing block; 15. a leaf plate; 16. a rotating shaft; 17. an air pump bin; 18. feeding slurry in a spiral manner; 19. an eccentric wheel.

Detailed Description

The technical solutions in the embodiments of the present invention will be 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 a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a sand and soil powder screening device for building construction comprises a bottom plate 5, a main body bin 2 is installed at the top of the bottom plate 5, a conveying pipe 9 is installed at the same end of the main body bin 2 and the bottom plate 5, a guide chute is installed at the bottom of one side, away from the main body bin 2, of the conveying pipe 9, the bottom of the guide chute is inclined, sand and soil are conveniently guided into the inner bottom of the conveying pipe 9, a containing box 4 is placed at one end, away from the conveying pipe 9, of the top of the bottom plate 5, a protection bin is installed at the top of one end, away from the conveying pipe 9, of the main body bin 2, and is beneficial to guiding filtered large gravel into the containing box 4 for collection, universal wheels are installed at four corners of the bottom plate 5, braking devices are arranged on the universal wheels, slurry 18 on a screw is arranged inside the conveying pipe 9, a rotating motor 11 is installed at the top of the conveying pipe 9, and the output end of the rotating motor 11, a material guide pipe 10 is arranged at the top of one end of a material conveying pipe 9 close to a main body bin 2, a first screening component 1 is arranged at the inner top of the main body bin 2, a second screening component 14 is arranged at the middle position inside the main body bin 2, a first guide plate 6 is hinged at the bottom of one side inside the main body bin 2, first springs 12 are symmetrically arranged at two ends of the other side inside the main body bin 2, the top ends of the first springs 12 are fixedly connected with the bottom of the first guide plate 6, an air pump bin 17 is arranged at the inner bottom of the main body bin 2, a dust removal component 13 is arranged inside the air pump bin 17, a rotating shaft 16 is arranged at one end inside the air pump bin 17, fan blade plates 15 are uniformly arranged outside the rotating shaft 16, the top end of the rotating shaft 16 penetrates through the top of the air pump bin 17 and is provided with an eccentric wheel 19 mutually matched with the first guide plate 6, and the rotating shaft 16 and, the bottom of the first guide plate 6 is continuously impacted by the eccentric wheel 19, so that sand and gravel at the top of the first guide plate 6 are discharged from the position of the first discharge port 7 quickly, the bottom of one side of the main body bin 2 is provided with the first discharge port 7 matched with the first guide plate 6, one end, close to the first discharge port 7, of the main body bin 2 is provided with the control panel 3, the control panel 3 is electrically connected with the rotating motor 11 through a wire, one end, far away from the control panel 3, of the bottom of one side of the main body bin 2 is provided with the square exhaust hole, the inner side of the square exhaust hole is provided with the screen, so that air in the air pump bin 17 is discharged into the external environment, and one side, close to the control panel 3, of the main;

the first screening assembly 1 comprises a roller 101, bearings 102, sieve holes 103, a driving motor 104, driving gears 105, driven gears 106 and an adjusting ring 107, the bearings 102 are mounted at the tops of two ends in the main body bin 2, the rollers 101 are mounted on the inner sides of the two groups of bearings 102 together, the sieve holes 103 are uniformly formed in the surface of the roller 101, the driven gears 106 are mounted at one ends, close to the conveying pipeline 9, of the outer sides of the rollers 101, the driving motor 104 is mounted at the top of the main body bin 2, the driving gears 105 meshed with the driven gears 106 are mounted at the output end of the driving motor 104, one ends, far away from the conveying pipeline 9, of the rollers 101 penetrate through the main body bin 2 and are provided with the adjusting ring 107, and;

the dust removal component 13 comprises a filter screen 131, an air suction pump 132, a filter bin 133, an air inlet bin 134, an air inlet hole 135 and a guide pipe 136, wherein the filter bin 133 is arranged at one end, far away from the material conveying pipe 9, in the air pump bin 17, two groups of filter screens 131 are uniformly arranged in the filter bin 133, the air suction pump 132 is arranged at the middle position of the bottom in the air pump bin 17, the input end of the air suction pump 132 is communicated with the inside of the filter bin 133, three groups of air inlet bins 134 are uniformly arranged at one side in the main body bin 2, the air inlet holes 135 are uniformly formed in the surface of the air inlet bin 134, the guide pipe 136 is arranged at one end outside the air inlet hole 135, the bottom end of the guide pipe 136 is communicated with;

the second screening component 14 comprises a second spring 141, a screening plate 142, a connecting rod 143 and a pushing block 144, two groups of screening plates 142 are arranged at the middle position inside the main bin 2, the connecting rod 143 is jointly installed at two ends of adjacent surfaces of the two groups of screening plates 142, two groups of second guide plates 8 matched with the screening plates 142 are arranged at one end of the main bin 2 close to the conveying pipe 9, the two groups of second guide plates 8 are in a herringbone structure, sand discharged from the screening plates 142 is guided to a specified position through the second guide plates 8, two rows of rollers are evenly installed at the middle positions of two sides inside the main bin 2, the tops of the rollers are tightly attached to the bottoms of the screening plates 142, the stability of the screening plates 142 in the reciprocating shaking process is improved, two groups of discharge holes matched with the screening plates 142 are formed at the middle position of one end of the main bin 2 close to the conveying pipe 9, the sand on the screening plates 142 is discharged from the inside the main bin 2, one end of the top of the sieve plate 142, which is far away from the feed delivery pipe 9, penetrates through the main body bin 2 and is provided with a pushing block 144 matched with the adjusting ring 107, one end of the bottom of the sieve plate 142, which is close to the pushing block 144, is provided with a second spring 141, and one end of the second spring 141, which is close to the main body bin 2, is connected with the main body bin 2.

Example 1, as shown in fig. 1-7, when the sand and soil needs to be sieved, the sand and soil is manually shoveled into the inner bottom of the material conveying pipe 9, the rotating motor 11 drives the screw slurry 18 to rotate, so as to convey the sand and soil inside the material conveying pipe 9 into the material guiding pipe 10, then the sand and soil enters the inside of the roller 101, the driving motor 104 drives the roller 101 to rotate inside the main bin 2 through the cooperation of the driving gear 105 and the driven gear 106, in the rotation process of the roller 101, the sand and soil smaller than the aperture of the sieve mesh 103 pass through the sieve mesh 103 and fall to the top of the first group of sieve plates 142, while the larger sand and sand blocked by the sieve mesh 103 fall into the inner part of the material containing box 4 along the direction of the roller 101, the adjusting ring 107 continuously pushes the sieve plates 142 to rock back and forth inside the main bin 2, the second spring 141 is continuously stretched and then returns to the original length, and the sand and soil on the top of the first group of sieve plates 142 is filtered for the second time, gravel blocked by the powder screen falls onto one group of second guide plates 8 along the direction of the first group of screen plates 142, gravel falling onto the tops of the second group of screen plates 142 passes through the powder screen and then guides larger gravel onto the second group of second guide plates 8, and finally gravel falling onto the tops of the first guide plates 6 is discharged from the first discharge port 7 through the direction of the first guide plates 6.

Embodiment 2, as shown in fig. 1 to 4, when dust in the main body chamber 2 needs to be treated, the control panel 3 controls the operation of the air pump 132, so that the dust in the main body chamber 2 flies around and enters the air inlet chamber 134 through the air inlet 135, and enters the filter chamber 133 through the conduit 136, and finally, the air with dust is filtered by the filter screen 131 and then is ejected from the output end of the air pump 132.

The working principle is as follows: before the device is used, when sand and soil are sieved, the control panel 3 controls the rotating motor 11, the driving motor 104 and the air pump 132 to work, then the sand and soil are manually shoveled into the inner bottom of the conveying pipe 9, the rotating motor 11 drives the spiral slurry feeding 18 to rotate, so that the sand and soil in the conveying pipe 9 are conveyed into the guide pipe 10, then the sand and soil enter the roller 101, the driving motor 104 drives the roller 101 to rotate in the main body bin 2 through the matching of the driving gear 105 and the driven gear 106, in the rotating process of the roller 101, sand and gravel smaller than the apertures of the sieve holes 103 pass through the sieve holes 103 and fall onto the top of the first group of sieve plates 142, and larger sand and gravel blocked by the sieve holes 103 fall into the containing box 4 along the guiding direction of the roller 101, when the roller 101 rotates, the adjusting ring 107 pushes the sieve plates 142 to shake in the main body bin 2 repeatedly, the second spring 141 will be stretched continuously and then restored to the original length, the sand and soil on the top of the first group of sieve plates 142 will be filtered for the second time, the sand and gravel blocked by the powder sieve will fall onto the second group of guide plates 8 along the first group of sieve plates 142, and the sand and gravel falling onto the top of the second group of sieve plates 142 will be guided onto the second group of guide plates 8 after passing through the powder sieve, and finally the sand and gravel falling onto the top of the first guide plate 6 will be discharged from the first discharge port 7 through the guide of the first guide plate 6, so as to sieve the sand and gravel into four layers, which greatly improves the utilization effect of the sand and gravel after passing through the powder sieve of the device, when the roller 101 and the sieve plates 142 sieve the sand and sand, the dust in the sand and soil will scatter around the inside of the main body bin 2, when the air pump 132 works, the dust will scatter around the inside of the main body bin 2 and enter the air inlet bin 134 through the air inlet pipe 136, and enter the inside of the filter bin 133 through the guide pipe 136, finally, the air with dust is sprayed out from the output end of the air suction pump 132 after being filtered by the filter screen 131, the sprayed air blows the fan blade plate 15 and the rotating shaft 16 to rotate, the eccentric wheel 19 at the top of the rotating shaft 16 continuously pushes the first guide plate 6 to vibrate, the gravel falling to the top of the first guide plate 6 is discharged from the position of the first discharge port 7 more quickly, the bin door of the filter bin 133 is opened periodically, the dust collected inside the filter bin 133 is treated, and the filter screen 131 is drawn out from the inside of the filter bin 133 to be cleaned.

Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a sand and soil powder sieve device for construction, includes bottom plate (5), its characterized in that: the main body bin (2) is installed at the top of the bottom plate (5), the conveying pipe (9) is installed at the same end of the main body bin (2) and the bottom plate (5), spiral feeding slurry (18) is arranged inside the conveying pipe (9), the rotating motor (11) is installed at the top of the conveying pipe (9), the output end of the rotating motor (11) is fixedly connected with the top end of the spiral feeding slurry (18), the conveying pipe (9) is close to the top of one end of the main body bin (2) and is provided with the guide pipe (10), the first screening component (1) is arranged at the inner top of the main body bin (2), the second screening component (14) is arranged at the middle position inside the main body bin (2), the first guide plate (6) is hinged to the bottom of one side inside the main body bin (2), and the first spring (12) is symmetrically installed at the two ends of the other side inside the main body bin (2), the top end of the first spring (12) is fixedly connected with the bottom of the first guide plate (6), an air pump bin (17) is arranged at the inner bottom of the main body bin (2), a dust removal assembly (13) is arranged inside the air pump bin (17), a first discharge port (7) matched with the first guide plate (6) is formed in the bottom of one side of the main body bin (2), a control panel (3) is installed at one end, close to the first discharge port (7), of the main body bin (2), and the control panel (3) is electrically connected with the rotating motor (11) through a wire;

the first screening assembly (1) comprises a roller (101), bearings (102), sieve holes (103), a driving motor (104), a driving gear (105), a driven gear (106) and an adjusting ring (107), the bearings (102) are mounted at the tops of two ends in the main body bin (2), and the inner sides of the two groups of bearings (102) are jointly provided with a roller (101), the surface of the roller (101) is uniformly provided with sieve pores (103), one end of the outer side of the roller (101) close to the conveying pipeline (9) is provided with a driven gear (106), the top of the main body bin (2) is provided with a driving motor (104), and the output end of the driving motor (104) is provided with a driving gear (105) which is meshed with the driven gear (106), one end of the roller (101) far away from the material conveying pipe (9) penetrates through the main body bin (2) and is provided with an adjusting ring (107), the control panel (3) is electrically connected with the driving motor (104) through a lead;

the dust removal component (13) comprises a filter screen (131), an air suction pump (132), a filter bin (133), an air inlet bin (134), an air inlet hole (135) and a conduit (136), a filtering bin (133) is arranged at one end of the interior of the air pump bin (17) far away from the material conveying pipe (9), two groups of filter screens (131) are uniformly arranged in the filter bin (133), an air pump (132) is arranged at the middle position of the bottom in the air pump bin (17), the input end of the air pump (132) is communicated with the interior of the filter bin (133), three groups of air inlet bins (134) are uniformly arranged on one side inside the main body bin (2), air inlet holes (135) are uniformly formed in the surface of the air inlet bin (134), a guide pipe (136) is installed at one end of the outer side of each air inlet hole (135), the bottom end of the guide pipe (136) is communicated with the interior of the filter bin (133), and the control panel (3) is electrically connected with the air suction pump (132) through a lead;

second screening subassembly (14) include second spring (141), sieve (142), connecting rod (143) and promote piece (144), main part storehouse (2) inside intermediate position department is provided with two sets of sieve (142), and the both ends of the adjacent one side of two sets of sieve (142) install connecting rod (143) jointly, the one end that conveying pipeline (9) were kept away from at sieve (142) top is passed main part storehouse (2) and is installed and promote piece (144) with adjustable ring (107) inter-complex, second spring (141) are installed to the one end that sieve (142) bottom is close to and promotes piece (144), and second spring (141) are close to the one end that main part storehouse (2) and are connected jointly with main part storehouse (2).

2. The sand and soil sieving device for building construction according to claim 1, characterized in that: the inside one end of air pump storehouse (17) is provided with axis of rotation (16), and evenly installs flabellum board (15) in the outside of axis of rotation (16), the top of axis of rotation (16) passes the top in air pump storehouse (17) and installs eccentric wheel (19) of mutually supporting with first deflector (6).

3. The sand and soil sieving device for building construction according to claim 1, characterized in that: the four corners of the bottom plate (5) are provided with universal wheels, and the universal wheels are provided with braking devices.

4. The sand and soil sieving device for building construction according to claim 1, characterized in that: one end of the main body bin (2) close to the conveying pipeline (9) is provided with two groups of second guide plates (8) which are matched with the sieve plate (142), and the two groups of second guide plates (8) are of a herringbone structure.

5. The sand and soil sieving device for building construction according to claim 1, characterized in that: the storage box (4) is placed at one end, far away from the conveying pipe (9), of the top of the bottom plate (5), and the protection bin is installed at the top, far away from one end of the conveying pipe (9), of the main bin (2).

6. The sand and soil sieving device for building construction according to claim 1, characterized in that: two rows of rollers are uniformly arranged in the middle positions of two sides in the main body bin (2), and the tops of the rollers are tightly attached to the bottom of the sieve plate (142).

7. The sand and soil sieving device for building construction according to claim 1, characterized in that: the square exhaust hole is formed in one end, away from the bottom of one side of the control panel (3), of the main body bin (2), and a screen is arranged on the inner side of the square exhaust hole.

8. The sand and soil sieving device for building construction according to claim 1, characterized in that: two groups of discharge holes matched with the sieve plate (142) are formed in the middle position of one end, close to the conveying pipe (9), of the main body bin (2).

9. The sand and soil sieving device for building construction according to claim 1, characterized in that: and an observation window is arranged on one side of the main body bin (2) close to the control panel (3).

10. The sand and soil sieving device for building construction according to claim 1, characterized in that: the bottom of one side of the conveying pipe (9) far away from the main body bin (2) is provided with a guide chute, and the bottom of the guide chute is inclined.