CN112958452A - Sand screening device for municipal building and screening method thereof - Google Patents

Abstract

The utility model belongs to the technical field of construction equipment's technique and specifically relates to a sand screening plant for municipal building and screening method thereof is related to, which comprises a frame, be provided with feeding funnel and screening mechanism in the frame, screening mechanism's outside is provided with the installation shell, screening mechanism is including the screening section of thick bamboo that is used for sieving the sand and the drive assembly who is used for adjusting screening section of thick bamboo position, screening section of thick bamboo sets up at the installing frame internal rotation, screening section of thick bamboo internal rotation is provided with middle screen cloth, be provided with in the installation shell and be used for driving middle screen cloth pivoted drive assembly, the one end of keeping away from ground on the installation shell is provided with the clearance subassembly that is used for clearing up the caking. This application has the effect that promotes screening efficiency.

Description

Sand screening device for municipal building and screening method thereof

Technical Field

The application relates to the technical field of construction equipment, in particular to a sand screening device for municipal buildings and a screening method thereof.

Background

In the process of building construction, sand and the like are used as building materials, but due to the fact that sand particles are different in size, screening is needed, sand with different particle sizes is obtained, and then the sand meeting the specification is used according to specific construction requirements.

The screening about building sand among the correlation technique uses vibration screening mechanical equipment usually, including frame and the screen cloth of setting in the frame, and the screen cloth slides the setting in the frame, is provided with actuating mechanism in the frame, and actuating mechanism is used for adjusting the position of screen cloth, when screening, places the sand on the screen cloth, drives the screen cloth vibrations through actuating mechanism, and then screens the sand.

In view of the above-mentioned related technologies, the inventor believes that the anti-blocking capability of the screening device is weak, and after the amount of sand is increased, the sand is easily accumulated on the screen mesh to block the screen mesh, thereby affecting the screening efficiency.

Disclosure of Invention

In order to improve the screening efficiency, the application provides a sand screening plant for municipal building and screening method thereof.

The application provides a sand screening plant for municipal building and screening method thereof adopts following technical scheme:

the utility model provides a municipal construction sand screening plant, includes the frame, be provided with feeding funnel and screening mechanism in the frame, the outside of screening mechanism is provided with the installation shell, screening mechanism is including the screening section of thick bamboo that is used for sieving the sand and the drive assembly who is used for adjusting screening section of thick bamboo position, the screening section of thick bamboo sets up at the installing frame internal rotation, screening section of thick bamboo internal rotation is provided with middle screen cloth, be provided with in the installation shell and be used for driving middle screen cloth pivoted drive assembly, the one end of keeping away from ground on the installation shell is provided with the clearance subassembly that is used for clearing up the caking.

Through adopting above-mentioned technical scheme, in putting into a screening section of thick bamboo with the sand through the feeding funnel, drive assembly drives the screening net and rotates, sieves the sand, and under drive assembly's effect, the screen cloth is at screening net internal rotation in the middle of the drive assembly of drive simultaneously, and then reduces the phenomenon that the sieve mesh on the screening net blockked up appears, and the caking that contains in with the sand through clearance subassembly is detached simultaneously, promotes the stability when screening, promotes screening efficiency.

Optionally, be provided with the installation pole in the installation shell, be provided with the bracing piece on the installation pole, screening section of thick bamboo rotates the setting on the bracing piece, drive assembly includes driving piece, ring gear and drive gear, the driving piece is close to the bottom setting of screening section of thick bamboo, the ring gear sets up the side that is close to ground one end at screening section of thick bamboo, drive gear sets up the output at the driving piece, drive gear and ring gear meshing.

Through adopting above-mentioned technical scheme, back in the sand enters into the screening section of thick bamboo, the driving piece drives drive gear and rotates, and drive gear rotates and drives the rotation of screening section of thick bamboo through the ring gear, and then screens the sand.

Optionally, the one end that the feeding funnel is close to the installation shell is provided with the feed cylinder, the one end on ground is kept away from at the installation shell to the feed cylinder setting, be provided with feed mechanism in the feed cylinder, feed mechanism includes feed plate and feeding spare, the feed cylinder internal rotation is provided with the dwang, the feed plate sets up the side at the dwang, the feeding spare sets up the side at the feed cylinder, the output and the dwang of feeding spare are connected.

Through adopting above-mentioned technical scheme, pour the sand into the feeding funnel in, when screening, the feeding spare drives the dwang and rotates, and then drives the feed plate and rotate, transports the sand to the screening section of thick bamboo in, reduces the sand and appears the phenomenon of jam in the feed pipe, stability when promoting the material loading.

Optionally, the opening part of installation shell is provided with the extension board, the feeder sleeve passes the extension board setting, the clearance subassembly includes clearance board and clearance pole, the setting is rotated on the installation shell to the clearance pole, the groove of stepping down has been seted up on the extension board, the clearance board corresponds the setting with the groove of stepping down, the clearance pole extends to and drive gear fixed connection towards the driving piece, the length of clearance board is the same with the radius of a screening section of thick bamboo, the side of installation shell and the position that the clearance board corresponds are provided with the collection frame.

Through adopting above-mentioned technical scheme, the driving piece drives a screening section of thick bamboo pivoted and drives the cleaning plate through the clearance pole and rotate simultaneously, and then transfers the caking of sand upper surface to the collection frame in, reduces the caking and appears influencing the phenomenon of screening.

Optionally, the installation shell is close to the inside partial slope setting of collection frame and is the inclined plane, set up a plurality of screening holes that are used for the screening on the inclined plane, screening hole and the inside intercommunication of installation shell.

Through adopting above-mentioned technical scheme, when the clearance board moved the caking and moved to the position that corresponds with the collection frame, in entering into the collection frame through the inclined plane, under the effect of screening hole on the inclined plane, sieved the loose sand that contains in the caking, promoted screening quality.

Optionally, the lateral wall of a screening section of thick bamboo is hollow structure, middle screen cloth rotates the setting along the orientation and the opposite direction of a screening section of thick bamboo in a screening section of thick bamboo, cover in the middle of the fixed middle that is provided with on the middle screen cloth, the one end that a screening section of thick bamboo was kept away from to cover in the middle passes a screening section of thick bamboo cover and establishes on the bracing piece, middle cover rotates the setting on the bracing piece, drive assembly and middle cover are connected.

Through adopting above-mentioned technical scheme, a screening section of thick bamboo rotates, drives middle screen cloth through drive assembly and middle cover and rotates to make middle screen cloth and a screening section of thick bamboo rotate simultaneously, when promoting screening efficiency, reduce the phenomenon that a screening section of thick bamboo appears blockking up.

Optionally, the transmission assembly includes a transmission ring, a transmission gear and a reversing gear, the transmission ring is disposed on the screening cylinder, the transmission gear is fixedly disposed on the intermediate sleeve, the reversing gear is disposed between the transmission gear and the transmission ring, a tooth space is disposed on the inner side of the transmission ring, and the reversing gear is respectively engaged with the tooth space and the transmission gear.

By adopting the technical scheme, the screening cylinder rotates to drive the transmission ring to rotate, the transmission ring rotates to drive the reversing gear to rotate, the reversing gear rotates to drive the transmission gear to rotate, and the transmission gear rotates to drive the middle sleeve to rotate so as to drive the middle screen to rotate.

Optionally, one side that the installation shell is close to ground is provided with out the workbin, be provided with out the flitch in the play workbin, it is hollow structure and communicates with the installation shell to go out the flitch, it is provided with first screening portion and second screening portion to go out flitch an organic whole, first screening portion and second screening portion are V font fixed connection, discharge gate first has been seted up with the position that first screening portion corresponds on the play workbin, discharge gate second has been seted up with the position that second screening portion corresponds on the play workbin.

Through adopting above-mentioned technical scheme, set up first screening portion and second screening portion and filter the sand of different particle sizes, then pour out through discharge gate one and discharge gate two respectively to handle the sand of different particle sizes.

Optionally, the ejection of compact board slides in the ejection of compact incasement and sets up, be provided with the fixed plate on the ejection of compact board, be provided with the butt plate with the fixed plate interval in the ejection of compact incasement, be provided with the elastic component that is used for adjusting ejection of compact board position between butt plate and the fixed plate, be provided with power spare in the ejection of compact incasement, power spare's output is provided with eccentric cam, eccentric cam's side and fixed plate butt.

Through adopting above-mentioned technical scheme, the power part drives eccentric cam and rotates, and eccentric cam rotates and drives the fixed plate and remove, and the fixed plate drives out the flitch and removes, and simultaneously under the effect of elastic component and eccentric cam for it is reciprocating motion in the play workbin to go out the flitch, promotes screening efficiency.

A screening method of a municipal building sand screening device comprises the following steps:

firstly, pouring sand into an upper hopper, opening a feeding piece, driving a feeding plate to rotate, and pushing the sand into a screening cylinder;

secondly, opening the driving part, rotating the driving part screening drum and the middle screen to screen the sand, and simultaneously driving the cleaning plate to rotate to transfer the agglomerates on the surface of the sand into the collecting frame;

thirdly, opening the power part, and driving the discharging plate to move in the discharging box by the power part to further screen the sand;

fourthly, screening the sands with different particle sizes under the action of the first sieve mesh and the second sieve mesh, and discharging the sands through the first discharge port and the second discharge port respectively;

and fifthly, discharging the finally remained sand through the opening on the second screening part.

Through adopting above-mentioned technical scheme, a screening section of thick bamboo sieves the sand respectively with the play flitch, collects the sand that is the caking form through collecting the frame, sieves the sand of different granules through going out the flitch to discharge through the discharge gate of difference respectively, under the effect of middle screen cloth, the phenomenon that the jam appears in the reduction screening section of thick bamboo simultaneously promotes screening efficiency.

Drawings

FIG. 1 is a schematic structural diagram of a municipal building sand screening device according to an embodiment of the application.

FIG. 2 is a schematic structural diagram of an upper hopper in the municipal building sand screening device of the embodiment of the application.

Fig. 3 is an enlarged schematic view at a in fig. 2.

FIG. 4 is a cut-away view of a mounting shell in the municipal architectural sand screening apparatus of an embodiment of the application.

FIG. 5 is a schematic structural diagram of a screening mechanism in the municipal building sand screening apparatus of an embodiment of the application.

Fig. 6 is an enlarged schematic view at B in fig. 5.

FIG. 7 is a schematic illustration of the construction of an intermediate screen in the municipal architectural sand screening apparatus of an embodiment of the application.

FIG. 8 is a schematic structural diagram of a discharge box in the municipal building sand screening device of the embodiment of the application.

FIG. 9 is a schematic structural view of a discharge plate of the municipal building sand screening device according to an embodiment of the application.

Reference numerals: 01. a frame; 1. feeding a hopper; 11. a feed pipe; 12. rotating the rod; 2. a screening mechanism; 21. a screening drum; 22. a drive assembly; 221. a drive member; 222. a ring gear; 223. a drive gear; 3. mounting a shell; 31. mounting a rod; 32. a support bar; 33. an extension plate; 331. a yielding groove; 34. a collection frame; 35. screening holes; 36. a first connecting pipe; 4. a feeding mechanism; 41. a feeding member; 42. a feeding plate; 5. cleaning the assembly; 51. cleaning the plate; 52. cleaning the rod; 6. a middle screen; 61. a middle sleeve; 7. a transmission assembly; 71. a drive ring; 72. a transmission gear; 73. a reversing gear; 8. a discharge plate; 81. a first sieving section; 811. a first screen hole; 82. a second sieving section; 821. a second sieve pore; 83. a second connecting pipe; 9. a discharging box; 91. a material guide plate; 91. a first discharge hole; 92. a discharge hole II; 93. a power member; 94. a fixing plate; 95. a butt joint plate; 96. an elastic member; 97. an eccentric cam.

Detailed Description

The present application is described in further detail below with reference to figures 1-9.

Example 1

A sand screening plant for municipal building. Referring to fig. 1 and 2, municipal building sand screening plant includes frame 01, is provided with feeding funnel 1 and screening mechanism 2 in frame 01, and feeding funnel 1 sets up in one side of screening mechanism 2, when carrying out the screening, places the sand in feeding funnel 1, then enters into screening mechanism 2 in, sieves the sand through screening mechanism 2.

Referring to fig. 3 and 4, be provided with installation shell 3 in frame 01, and the one end that installation shell 3 kept away from ground is equipped with the opening, screening mechanism 2 is including screening section of thick bamboo 21 and drive assembly 22, screening section of thick bamboo 21 is cylindricly and deviates from the one end on ground and is equipped with the opening, the opening of screening section of thick bamboo 21 and the opening parallel and level of installation shell 3, the inner wall interval of screening section of thick bamboo 21 and installation shell 3 sets up, a plurality of sieve meshes have evenly been seted up to the side of screening section of thick bamboo 21, screening section of thick bamboo 21 rotates the setting in frame 01, drive assembly 22 sets up in frame 01 and is connected with screening section of thick bamboo 21, drive assembly 22 is used for driving screening section of thick bamboo 21 to rotate, sand passes through feeding funnel 1 and enters into screening section of thick bamboo 21 in, drive assembly 22 drives screening section of thick bamboo 21 and rotates, and then sieves the sand, the sand after the screening.

Referring to fig. 4 and 5, the driving assembly 22 includes a driving member 221, a gear ring 222 and a driving gear 223, the driving member 221 may be provided as a motor, the driving member 221 is disposed near the bottom of the sieving cylinder 21, the gear ring 222 is welded and sleeved on the side surface of the bottom of the sieving cylinder 21, the center line of the gear ring 222 and the rotation center of the sieving cylinder 21 are disposed on the same straight line, the driving gear 223 is disposed on the output shaft of the driving member 221, the driving gear 223 is engaged with the gear ring 222, the driving member 221 drives the driving gear 223 to rotate, the driving gear 223 rotates to drive the sieving cylinder 21 to rotate through the gear ring 222, and sand is. Be provided with installation pole 31 in installation shell 3, installation pole 31 welded fastening is on installation pole 31, and welded fastening has bracing piece 32 on installation pole 31, and screening section of thick bamboo 21 rotates the setting on bracing piece 32, supports screening section of thick bamboo 21 through installation pole 31, and then promotes the stability when screening section of thick bamboo 21 rotates.

Referring to fig. 2 and 3, in order to pour sand into a screening section of thick bamboo 21 for convenience, set up the one side of feeding funnel 1 at a screening section of thick bamboo 21, and the bottom of feeding funnel 1 is close to the one end setting that a screening section of thick bamboo 21 kept away from ground, one side that is close to installation shell 3 at feeding funnel 1 is provided with feed pipe 11, the one end setting of feed pipe 11 is in the top of a screening section of thick bamboo 21, the other end passes feeding funnel 1 and extends to in the feeding funnel 1 and feed through with feeding funnel 1, sand in the feeding funnel 1 enters into the screening frame through feed pipe 11, carry out the material loading to a screening section of thick bamboo 21, the phenomenon of jam appears in the feed pipe 11 department for reducing sand, the one end that is close to feeding funnel 1 in feed pipe 11 is provided with feed. Feed mechanism 4 includes feed plate 42 and feed part 41, feed part 41 can set up to the motor, 11 rotations in the feed tube are provided with dwang 12, feed plate 42 is provided with a plurality ofly, and a plurality of feed plates 42 revolute the dwang 12 welded fastening setting, the output shaft of motor extends to in the feed tube 11 and dwang 12 is connected, the motor passes through dwang 12 and drives feed plate 42 and rotate, and then bring the sand into a screening section of thick bamboo 21 in, reduce the sand and appear the phenomenon of jam in feed tube 11 department.

Referring to fig. 4 and 5, when the sieving cylinder 21 sieves sand, the sand is driven to rotate in the sieving cylinder 21, lumps adhered together exist inside the sand, the lumps in the sand can gradually move to the upper surface of the sand along with the rotation of the sieving cylinder 21, in order to remove the sand containing the lumps, an extension plate 33 is disposed at an opening of the mounting shell 3, the feed pipe 11 is disposed through the extension plate 33, a cleaning assembly 5 for removing the lumps is disposed on the extension plate 33, the cleaning assembly 5 includes a cleaning plate 51 and a cleaning rod 52, the cleaning rod 52 is rotatably disposed on the mounting shell 3, the cleaning plate 51 is provided in plurality, the cleaning plates 51 are uniformly spaced around the cleaning rod 52, the cleaning rod 52 is disposed on one side of the mounting shell 3 away from the feed pipe 11, the cleaning rod 52 is rotatably disposed on the mounting shell 3, a yielding groove 331 is disposed on the extension plate 33, the cleaning plate 51 and the yielding groove 331 are correspondingly disposed, the upper surface of the cleaning plate 51 and the upper surface of the extension plate 33 are disposed in the same horizontal plane, the length of the cleaning plate 51 is the same as the radius of the classifying cylinder 21, and the cleaning plate 51 is rotated to remove the lumps on the sand from the sand by rotating the cleaning plate 51 by the cleaning rod 52. Cleaning plate 51 is arranged in an arc shape so that cleaning plate 51 drives the cake to move.

Referring to fig. 1 and 4, in order to collect the lumps, a collecting frame 34 is disposed on a side surface of the mounting case 3, the collecting frame 34 and a cleaning plate 51 are correspondingly disposed, and the cleaning plate 51 drives the lumps to be taken out of the sieving cylinder 21 and then to enter the collecting frame 34. Installation shell 3 sets to the inclined plane near the inside part of collection frame 34, has seted up screening hole 35 on the inclined plane, and screening hole 35 and the inside intercommunication of installation shell 3, the caking enters into collection frame 34 through the inclined plane in, and clearance plate 51 can contain the sand between the caking when driving the caking removal, when the caking when landing from the inclined plane, the sand that contains in the caking enters into installation shell 3 through screening hole 35 under the effect in screening hole 35, and then the sand that contains in will caking is detached. With reference to fig. 5, in order to facilitate driving the cleaning rod 52 to rotate, one end of the cleaning rod 52 far away from the cleaning plate 51 extends towards the driving member 221, the cleaning rod 52 is fixedly connected with the driving gear 223, and when the sieving cylinder 21 rotates, the cleaning rod 52 is driven to rotate, so as to drive the cleaning plate 51 to rotate.

Referring to fig. 6 and 7, in order to block the screen holes of the screening drum 21, the side surface of the screening drum 21 is provided with a hollow structure, a middle screen 6 is arranged in the screening drum 21, the middle screen 6 is rotationally arranged in the screening drum 21, the middle screen 6 rotates in the screening drum 21 along the direction deviating from the screening drum 21, and the blocking phenomenon of the screening drum 21 is reduced under the action of the middle screen 6 and the screening drum 21.

Referring to fig. 6 and 7, in order to facilitate driving the middle screen 6 to rotate, a middle sleeve 61 is arranged on the middle screen 6, one end of the middle sleeve 61 is fixedly connected with the middle screen 6, the other end of the middle sleeve 61 penetrates through the sieving cylinder 21 to be sleeved on the support rod 32, the middle sleeve is rotatably arranged on the support rod 32, a transmission assembly 7 is arranged on the sieving cylinder 21, and the sieving cylinder 21 is connected with the middle sleeve 61 through the transmission assembly 7. Referring to fig. 5, the transmission assembly 7 includes a transmission ring 71, a transmission gear 72 and a reversing gear 73, the transmission ring 71 is welded and fixed on one side of the sieving cylinder 21 close to the support rod 32 and is disposed outside the middle sleeve 61, the transmission gear 72 is fixedly disposed on the middle sleeve 61, the reversing gear 73 is disposed between the transmission gear 72 and the transmission ring 71, a tooth space is formed in the inner side of the transmission ring 71, the reversing gear 73 is respectively engaged with the transmission gear 72 and the transmission ring 71, the reversing gear 73 is rotatably disposed on the mounting frame, when the sieving cylinder 21 rotates, the transmission gear 72 is driven to rotate by the reversing gear 73, the middle sleeve 61 is further driven to rotate, the middle sleeve 61 drives the middle screen 6 to rotate, and simultaneously, under the action of the reversing gear 73, the middle screen 6 is driven to rotate in the direction opposite to the sieving cylinder 21, so as to improve the. The screening cylinder 21 is fixedly welded with an isolation sleeve, the isolation sleeve is arranged outside the transmission assembly 7, sand is reduced to enter the space between the transmission gear 72 and the middle gear through the isolation sleeve, and the stability during transmission is improved.

Referring to fig. 8 and 9, a discharge box 9 is disposed below the mounting housing 3, a discharge plate 8 is disposed in the discharge box 9, the discharge plate 8 is hollow, one end of the discharge plate 8 is connected to the mounting housing 3, the interior of the discharge plate 8 is communicated with the interior of the mounting housing 3, the discharge plate 8 is integrally provided with a first sieving portion 81 and a second sieving portion 82, the first sieving portion 81 and the second sieving portion 82 are respectively disposed in an inclined manner and connected in a V-shape, one side of the first sieving portion 81 close to the ground is uniformly provided with a plurality of first sieve holes 811, one side of the second sieving portion 82 close to the ground is uniformly provided with a second sieve hole 821, the diameter of the first sieve hole 811 is smaller than that of the second sieve hole 821, a guide plate 91 is disposed between the first sieving portion 81 and the second sieving portion 82, one side of the guide plate 91 corresponds to the connection between the first sieving portion 81 and the second sieving portion 82, and the other side is disposed in an inclined manner toward the ground, the discharging box 9 is provided with a first discharging port 91 and a second discharging port 92, the first discharging port 91 and one side of the guide plate 91 close to the ground are correspondingly arranged, the second discharging port 92 is arranged at the bottom of the discharging box 9 and is correspondingly arranged with the second sieve mesh 821, and one end of the second sieving part 82 far away from the first sieving part 81 is provided with an opening and extends to the outside of the discharging box 9.

Referring to fig. 8 and 9, the sands with different particle sizes are screened through the first screen hole 811 and the second screen hole 821, the first-stage screened sand is poured out through the first discharge hole 91 under the action of the material guide plate 91, the second-stage screened sand is poured out of the discharge box 9 through the second discharge hole 92, and finally the rest is poured out through the opening of the second screening part 82.

Referring to fig. 8 and 9, in order to improve the screening effect of the discharging plate 8, the discharging plate 8 is arranged to slide in the discharging box 9 along a vertical direction, a power member 93 for adjusting the position of the discharging plate 8 is arranged in the discharging box 9, the power member 93 can be set as a motor, a fixing plate 94 is fixedly welded at the joint of the first screening part 81 and the second screening part 82, an abutting plate 95 is arranged in the discharging box 9 and spaced from the fixing plate 94, an elastic member 96 is arranged between the fixing plate 94 and the abutting plate 95, the elastic member 96 can be set as a spring, one end of the spring abuts against the fixing plate 94, the other end abuts against the abutting plate 95, an eccentric cam 97 is arranged on an output shaft of the motor, the side surface of the eccentric cam 97 abuts against the fixing plate 94, the motor drives the discharging plate 8 to move through the eccentric cam 97 and the fixing plate 94, and the discharging plate 8 reciprocates in the discharging box 9 under the action of the, thereby improving the screening effect on the sand.

Referring to fig. 8 and 9, a first connecting pipe 36 is arranged on the mounting shell 3, a second connecting pipe 83 is arranged on the discharging plate 8, the second connecting pipe 83 is sleeved outside the first connecting pipe 36, and the first connecting pipe 36 is arranged on the second connecting pipe 83 in a sliding manner, so that the discharging plate 8 drives the second connecting pipe 83 to slide on the first connecting pipe 36 when moving, and the phenomenon of leakage of sand at the joint of the discharging plate 8 and the mounting shell 3 is reduced.

Example 2

A screening method of a municipal building sand screening device comprises the following steps:

firstly, pouring sand into the upper hopper 1, opening the feeding piece 41, driving the feeding plate 42 to rotate, and pushing the sand into the sieving cylinder 21;

secondly, opening the driving part 221, rotating the screening cylinder 21 and the middle screen 6 of the driving part 221 to screen sand, and simultaneously driving the cleaning plate 51 to rotate to transfer the agglomerates on the surface of the sand into the collecting frame 34;

thirdly, opening the power part 93, and driving the discharging plate 8 to move in the discharging box 9 by the power part 93 to further screen sand;

fourthly, screening the sands with different particle sizes under the action of the first sieve hole 811 and the second sieve hole 821, and discharging the sands through a first discharge hole 91 and a second discharge hole 92 respectively;

in a fifth step, the last remaining sand is discharged through the openings in the second sifting portion 82.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a sand screening plant for municipal building, includes frame (01), its characterized in that: be provided with feeding funnel (1) and screening mechanism (2) in frame (01), the outside of screening mechanism (2) is provided with installation shell (3), screening mechanism (2) are including screening section of thick bamboo (21) that are used for sieving the sand and drive assembly (22) that are used for adjusting screening section of thick bamboo (21) position, screening section of thick bamboo (21) internal rotation setting in installation shell (3), screening section of thick bamboo (21) internal rotation is provided with middle screen cloth (6), be provided with in installation shell (3) and be used for driving middle screen cloth (6) pivoted drive assembly (7), the one end of keeping away from ground on installation shell (3) is provided with clearance subassembly (5) that are used for clearing up the sand caking.

2. The municipal architectural sand screening device of claim 1, wherein: be provided with installation pole (31) in installation shell (3), be provided with bracing piece (32) on installation pole (31), screening section of thick bamboo (21) rotates the setting on bracing piece (32), drive assembly (22) are including driving piece (221), ring gear (222) and drive gear (223), the bottom that driving piece (221) are close to screening section of thick bamboo (21) sets up, ring gear (222) set up the side that is close to ground one end at screening section of thick bamboo (21), drive gear (223) set up the output at driving piece (221), drive gear (223) and ring gear (222) meshing.

3. The municipal architectural sand screening device of claim 2, wherein: go up one end that hopper (1) is close to installation shell (3) and be provided with feed pipe (11), feed pipe (11) set up the one end of keeping away from ground in installation shell (3), be provided with feed mechanism (4) in feed pipe (11), feed mechanism (4) are including feed plate (42) and feeding spare (41), feed pipe (11) internal rotation is provided with dwang (12), feed plate (42) set up the side at dwang (12), feeding spare (41) set up the side at feed pipe (11), the output and dwang (12) of feeding spare (41) are connected.

4. The municipal architectural sand screening device of claim 3, wherein: the opening part of installation shell (3) is provided with extension board (33), extension board (33) setting is passed in feed pipe (11), clearance subassembly (5) are including clearance board (51) and clearance pole (52), clearance pole (52) rotate the setting on installation shell (3), set up groove of stepping down (331) on extension board (33), clearance board (51) and groove of stepping down (331) correspond the setting, clearance pole (52) extend to with drive gear (223) fixed connection towards driving piece (221), the length of clearance board (51) is the same with the radius of screening a section of thick bamboo (21), the side of installation shell (3) and the position that clearance board (51) correspond are provided with collection frame (34).

5. The municipal architectural sand screening device of claim 4, wherein: the installation shell (3) are close to the inside partial slope setting of collection frame (34) and are the inclined plane, set up a plurality of screening holes (35) that are used for the screening on the inclined plane that collection frame (34) correspond, screening hole (35) and installation shell (3) inside intercommunication.

6. The municipal architectural sand screening device of claim 1, wherein: the lateral wall of a screening section of thick bamboo (21) is hollow structure, middle screen cloth (6) rotate the setting along the orientation and the opposite direction of a screening section of thick bamboo (21) in a screening section of thick bamboo (21), cover (61) in the middle of fixed being provided with on middle screen cloth (6), the one end that screening section of thick bamboo (21) was kept away from in middle cover (61) is passed screening section of thick bamboo (21) and is established on bracing piece (32), cover (61) rotate the setting on bracing piece (32) in the middle, drive assembly (7) and middle cover (61) are connected.

7. The municipal building sand screening device according to claim 6, wherein: the transmission assembly (7) comprises a transmission ring (71), a transmission gear (72) and a reversing gear (73), the transmission ring (71) is arranged on the screening cylinder (21), the transmission gear (72) is fixedly arranged on the middle sleeve (61), the reversing gear (73) is arranged between the transmission gear (72) and the transmission ring (71), a tooth socket is formed in the inner side of the transmission ring (71), and the reversing gear (73) is respectively meshed with the tooth socket and the transmission gear (72).

8. The municipal architectural sand screening device of claim 7, wherein: one side that installation shell (3) are close to ground is provided with out workbin (9), be provided with out flitch (8) in going out workbin (9), go out flitch (8) and for hollow structure and with installation shell (3) intercommunication, go out flitch (8) an organic whole and be provided with first screening portion (81) and second screening portion (82), first screening portion (81) and second screening portion (82) are V font fixed connection, discharge gate first (91) have been seted up with the position that first screening portion (81) correspond on going out workbin (9), discharge gate second (92) have been seted up with second screening portion (82) corresponding position on going out workbin (9).

9. The municipal architectural sand screening device of claim 8, wherein: go out flitch (8) and slide in ejection of compact case (9) and set up, be provided with fixed plate (94) on the ejection of compact board (8), go out in ejection of compact case (9) and fixed plate (94) interval are provided with butt plate (95), be provided with between butt plate (95) and fixed plate (94) and be used for adjusting elastic component (96) of ejection of compact board (8) position, be provided with power spare (93) in ejection of compact case (9), the output of power spare (93) is provided with eccentric cam (97), the side and fixed plate (94) butt of eccentric cam (97).

10. A screening method of the municipal architectural sand screening device according to any one of claims 1 to 9, comprising the steps of:

firstly, pouring sand into an upper hopper (1), opening a feeding piece (41) to drive a feeding plate (42) to rotate, and pushing the sand into a screening cylinder (21);

secondly, opening the driving part (221), rotating the screening cylinder (21) and the middle screen (6) of the driving part (221) to screen sand, driving the cleaning plate (51) to rotate at the same time, and transferring the agglomerates on the surface of the sand into the collection frame (34);

thirdly, opening a power part (93), wherein the power part (93) drives a discharging plate (8) to move in a discharging box (9), and further screening sand;

fourthly, screening sands with different particle sizes under the action of the first sieve hole (811) and the second sieve hole (821), and discharging the sands through a first discharge hole (91) and a second discharge hole (92) respectively;

in a fifth step, the last remaining sand is discharged through openings in the second screening section (82).

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