CN114643198A

CN114643198A - Anti-blocking sand screening machine for prefabricated parts of building engineering and using method thereof

Info

Publication number: CN114643198A
Application number: CN202210440194.1A
Authority: CN
Inventors: 丁源
Original assignee: Zhangjiagang Yongmao Housing Industry Co ltd
Current assignee: Zhangjiagang Yongmao Housing Industry Co ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-06-21

Abstract

The invention relates to the technical field of constructional engineering, in particular to an anti-blocking sand screening machine for a prefabricated component of constructional engineering and a using method thereof, wherein the anti-blocking sand screening machine comprises a feeding hopper, a roller screening machine main body and a conveying belt, a stirring mechanism is arranged above the interior of the feeding hopper, and a material pushing mechanism is arranged at a discharge hole of the feeding hopper; the feeding hopper is supported by a plurality of supporting legs; the roller screening machine main body comprises a support frame, a first screening roller, a second screening roller and a roller driving mechanism, wherein the first screening roller, the second screening roller and the roller driving mechanism are all arranged on the upper end surface of the support frame, the second screening roller rotates in the first screening roller, and the roller driving mechanism is rotationally connected with the first screening roller; the conveyer belt is including first conveyer belt and second conveyer belt, and the conveyer belt is used for carrying the sieve material. The sand block screening and conveying device can break up a large amount of poured sand or sand blocks when the sand blocks are screened and conveyed, and then can quickly discharge the sand or sand blocks to a screening position for good screening treatment.

Description

Anti-blocking sand screening machine for prefabricated parts of building engineering and using method thereof

Technical Field

The invention relates to a sand screening machine, in particular to an anti-blocking sand screening machine for prefabricated parts in constructional engineering and a using method thereof, and belongs to the technical field of constructional engineering.

Background

The sand screening machine is also called a dry land sand screening boat and a sand separator, and is sand separation equipment suitable for riverways, reservoirs and coal yards; the device consists of a ship body, a frame, a speed reducer, a conveying belt, a rotary screen and an engine or a motor; the machine has simple structure, is economical and applicable and is easy to operate; the device is divided into a drum type sand screening machine, a washing drum type sand screening machine, a vibrating screen type sand screening machine and the like;

the drum type sand screening machine is a more sand screening machine used in building engineering, adopts a horizontally arranged drum screening drum according to the working principle of screening sand by manually utilizing an inclined plane, and ensures that material flow can continuously roll and screen for more than five circles among a plurality of circles of inner spiral blades in the screening drum, so that sand materials are repeatedly rolled and slid to be fully dispersed and separated; different from mutual pushing and burying of large and small materials caused by an inclined roller screen, the screening process is hasty; the vibration jumping and the mixing of the materials are different from the materials with different sizes of the inclined vibrating screen;

the sand screening machine for the prefabricated part of the existing building engineering is used for screening sand, because the feed hopper is gradually reduced in size from top to bottom, when sand once stored in the feed hopper is too much, a feed hopper opening is easily blocked, and the sand screening machine is slowly dredged manually, so that the working efficiency of the sand screening machine is influenced, and meanwhile, the screening effect is not ideal.

Therefore, there is a need for an improved sand screening machine to solve the above existing problems.

Disclosure of Invention

The invention aims to provide an anti-blocking sand screening machine for prefabricated parts in building engineering and a using method thereof.

In order to achieve the purpose, the invention adopts the main technical scheme that:

an anti-blocking sand screening machine for prefabricated components in construction engineering comprises a feeding funnel, a roller screening machine main body and a conveying belt, wherein a stirring mechanism is arranged above the inside of the feeding funnel, and a material pushing mechanism is arranged at a discharge hole of the feeding funnel; the feeding hopper is supported by a plurality of supporting legs;

the roller screening machine main body comprises a support frame, a first screening roller, a second screening roller and a roller driving mechanism, wherein the first screening roller, the second screening roller and the roller driving mechanism are all arranged on the upper end surface of the support frame, the second screening roller rotates in the first screening roller, and the roller driving mechanism is rotatably connected with the first screening roller;

the conveyer belt is including first conveyer belt and second conveyer belt, the conveyer belt is used for carrying the sieve material.

Preferably, rabbling mechanism is including first driving motor, first stirring body and two second stirring bodies, first stirring body and two the second stirring body all with the inside top of feed hopper is rotated and is connected, first driving motor sets up feed hopper's the outside and with first stirring body is connected, first stirring body and two the second stirring body passes through the chain and connects.

Preferably, first stirring body is including first axis of rotation and a plurality of stirring piece, a plurality of the stirring piece is in evenly distributed in the first axis of rotation, first axis of rotation with first driving motor's output is connected, the second stirring body is including second axis of rotation and a plurality of second stirring piece, a plurality of the second stirring piece is in evenly distributed in the second axis of rotation, two the second stirring body sets up respectively the both sides of first stirring body, set up in the first axis of rotation the stirring piece with the second axis of rotation is last the second stirring piece sets up crisscross each other.

Preferably, the both ends of second axis of rotation all through first bearing with feed hopper's inside is rotated and is connected, feed hopper's the outside is provided with the motor support board, first driving motor is fixed to be set up the up end of motor support board, feed hopper's below from top to bottom to the slope of rotary screen machine main part direction, feed hopper's discharge end is close to the second screening cylinder.

Preferably, pushing equipment is including second driving motor, dwang and a plurality of scraping wings, a plurality of the even vertical setting of scraping wings is in the surface of dwang, second driving motor is fixed to be set up the top on feed hopper discharge end surface, second driving motor's output runs through feed hopper and with the dwang is connected, the dwang is in the vertical setting in inside of feed hopper discharge end.

Preferably, the both sides on first screening cylinder surface are provided with toothed disc and rotation track respectively, the ring channel has all been seted up to the both sides of first screening cylinder inner wall, the both sides on second screening cylinder surface be provided with respectively with ring channel sliding connection's annular piece, the second screening cylinder is close to the one end of toothed disc is provided with the closing disc, the surface of closing disc passes through third driving motor and connects, third driving motor's below through motor support frame with the up end fixed connection of support frame.

Preferably, the roller driving mechanism comprises a fourth driving motor, a supporting connecting rod, a first gear and a first roller, a first baffle and a second baffle are respectively arranged on two sides of the upper end face of the supporting frame, the fourth driving motor penetrates through the first baffle and is connected with the supporting connecting rod, one end of the supporting connecting rod, far away from the fourth driving motor, is connected with the inner side face of the second baffle through a second bearing, the first gear is fixedly connected with the supporting connecting rod, the first gear is connected with the gear disc in a meshed mode, the first roller is clamped with the rotating track, the roller driving mechanism is symmetrically arranged on the upper end face of the supporting frame, and the two roller driving mechanisms are used for supporting and rotating the first screening roller and the second screening roller.

Preferably, the first conveyer belt is arranged under the first screening roller, the second conveyer belt is arranged obliquely upwards, the lowest end of the second conveyer belt is connected with the end, below the feeding hopper, of the first conveyer belt, and the surfaces of the first conveyer belt and the second conveyer belt are provided with a plurality of miniature bumps.

Preferably, the support frame with the below of conveyer belt all is provided with the second supporting leg, the lower terminal surface of second supporting leg and the lower terminal surface of supporting leg all is provided with the backup pad.

A use method of an anti-blocking sand screening machine for a prefabricated part of construction engineering comprises the following steps:

s1: stirring the sand body: when sand bodies are screened and conveyed, firstly, the sand bodies are infused into a feeding funnel for scattering and discharging treatment, when the sand bodies enter the feeding funnel, a first driving motor is started, the first stirring body is driven to rotate by the rotation of the first driving motor, two second stirring bodies are also driven to rotate by the arrangement of chain connection, scattered sand or blocky sand bodies are scattered and conveyed by a plurality of rotating stirring sheets which are arranged in a staggered mode and second stirring sheets, when the scattered sand needs to be discharged through a discharging end, a rotating rod and a plurality of material pushing plates are driven to rotate by the rotation of the second driving motor, and therefore the sand is pushed into a first screening roller and a second screening roller for screening treatment;

s2: screening and stirring sand bodies: when sand is screened, the support connecting rod, the first gear and the first roller are driven to rotate by the rotation of the fourth driving motor, so that the first screening roller connected with the support is driven to rotate, the closed disc is driven to rotate by the rotation of the third driving motor while the first screening roller rotates, so that the second screening roller connected with the closed disc is driven to rotate in the first screening roller in the opposite direction, and the sand can be screened more thoroughly by the simultaneous rotation of the first screening roller and the second screening roller in the opposite directions;

s3: conveying sand: the sand can fall into the surface of the first conveying belt to be conveyed after being screened by the first screening roller and the second screening roller, the sand on the surface is conveyed to the second conveying belt by the first conveying belt, and then the screened sand is discharged by the second conveying belt which is obliquely and upwards arranged.

The invention has at least the following beneficial effects:

1. can break up the processing through utilizing rabbling mechanism with the inside sand or the husky piece of a large amount of sand or the sand that gushes into feed hopper when sand piece is screened and is carried, then can discharge the sand to can just carry out opposite direction pivoted two inside screening cylinders simultaneously and carry out good screening processing through the pushing equipment who utilizes the exit end fast, utilize the conveyer belt to carry at last to can improve screening efficiency and the screening effect of screening sand machine.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a perspective view of a screening drum body according to the present invention;

FIG. 3 is a schematic perspective view of a feed hopper of the present invention;

FIG. 4 is a schematic perspective view of another part of the main body of the roller screen of the present invention;

FIG. 5 is a schematic perspective view of the pushing mechanism of the present invention;

FIG. 6 is a schematic top view of a feed hopper of the present invention;

fig. 7 is a schematic view of the internal connection of the screening drum of the present invention.

In the figure, 1-a feeding funnel, 2-a roller screen machine body, 3-a conveying belt, 4-a stirring mechanism, 5-a pushing mechanism, 6-a supporting frame, 7-a first screening roller, 8-a second screening roller, 9-a roller driving mechanism, 10-a first conveying belt, 11-a second conveying belt, 12-supporting legs, 13-a first driving motor, 14-a first stirring body, 15-a second stirring body, 16-a chain, 17-a first rotating shaft, 18-a stirring sheet, 19-a second rotating shaft, 20-a second stirring sheet, 21-, 22-a first bearing, 23-a motor supporting plate, 24-a second driving motor, 25-a rotating shaft, 26-a pushing plate, 27-a gear disc and 28-a rotating track, 29-annular groove, 30-annular block, 31-sealing disc, 32-third driving motor, 33-motor supporting frame, 34-fourth driving motor, 35-supporting connecting rod, 36-first gear, 37-first roller, 38-first baffle, 39-second baffle, 40-second bearing, 41-miniature bump, 42-second supporting leg and 43-supporting plate.

Detailed Description

Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

As shown in fig. 1 to 7, the anti-blocking sand screening machine for prefabricated components in building engineering provided by this embodiment includes a feeding funnel 1, a drum screening machine main body 2 and a conveying belt 3, a stirring mechanism 4 is disposed above the inside of the feeding funnel 1, the stirring mechanism 4 includes a first driving motor 13, a first stirring body 14 and two second stirring bodies 15, the first stirring body 14 and the two second stirring bodies 15 are both rotatably connected to the inside of the feeding funnel 1, the first driving motor 13 is disposed outside the feeding funnel 1 and connected to the first stirring body 12, the first stirring body 14 and the two second stirring bodies 15 are connected by a chain 16, and the first stirring body 14 and the two second stirring bodies 15 are connected by the chain 16, so as to achieve the effect of simultaneous rotation; the first stirring body 14 comprises a first rotating shaft 17 and a plurality of stirring blades 18, the stirring blades 18 are uniformly distributed on the first rotating shaft 17, the first rotating shaft 17 is connected with the output end of the first driving motor 13, the second stirring body 15 comprises a second rotating shaft 19 and a plurality of second stirring blades 20, and the second stirring blades 20 are uniformly distributed on the second rotating shaft 19; when sand enters the feeding funnel 1, the first driving motor 13 is started, the first stirring body 14 is driven to rotate by the rotation of the first driving motor 13, the two second stirring bodies 15 are also rotated by the connection of the chains 16, and the scattered sand or the blocked sand is scattered and conveyed by the plurality of rotating stirring sheets 18 and the second stirring sheets 20 which are arranged in a staggered mode; the two second stirring bodies 15 are respectively arranged at two sides of the first stirring body 14, the stirring sheets 18 arranged on the first rotating shaft 17 and the second stirring sheets 20 arranged on the second rotating shaft 19 are arranged in a mutually staggered manner, the two second stirring bodies 15 are matched with the first stirring body 14, and the mutually staggered arrangement of the stirring sheets can well stir and break sand blocks, so that later-stage discharge is facilitated, and blockage is prevented;

a discharge hole of the feeding funnel 1 is provided with a material pushing mechanism 5; the material pushing mechanism 5 comprises a second driving motor 24, a rotating rod 25 and a plurality of material pushing plates 26, the plurality of material pushing plates 26 are uniformly and vertically arranged on the outer surface of the rotating rod 25, the second driving motor 24 is fixedly arranged above the surface of the discharging end of the feeding funnel 1, the output end of the second driving motor 24 penetrates through the feeding funnel 1 and is connected with the rotating rod 25, the rotating rod 25 is vertically arranged inside the discharging end of the feeding funnel 1, and when scattered sand needs to be discharged through the discharging end, the rotating rod 25 and the plurality of material pushing plates 26 are driven to rotate by the rotation of the second driving motor 24, so that the sand is pushed into the first screening roller 7 and the second screening roller 8 to be screened; the feed hopper 1 is supported by a plurality of support legs 12; the supporting legs 12 are used for supporting the feeding funnel 1;

the roller screening machine main body 2 comprises a support frame 6, a first screening roller 7, a second screening roller 8 and a roller driving mechanism 9, the first screening roller 7, the second screening roller 8 and the roller driving mechanism 9 are all arranged on the upper end surface of the support frame 6, the second screening roller 8 rotates in the first screening roller 7, a gear disc 27 and a rotating track 28 are respectively arranged on two sides of the surface of the first screening roller 7, annular grooves 29 are respectively formed in two sides of the inner wall of the first screening roller 7, annular blocks 30 in sliding connection with the annular grooves 29 are respectively arranged on two sides of the surface of the second screening roller 8, the second screening roller 8 is in sliding connection with the annular grooves 29 through the annular blocks 30 in the first screening roller 1, and the second screening roller 8 has a rotating effect in the first screening roller 7; a closed disc 31 is arranged at one end, close to the gear disc 27, of the second screening roller 8, the closed disc 31 is used for closing the second screening roller 8, the outer surface of the closed disc 31 is connected through a third driving motor 32, the lower portion of the third driving motor 32 is fixedly connected with the upper end face of the supporting frame 6 through a motor supporting frame 33, when the first screening roller 7 rotates, the closed disc 31 is driven to rotate through the rotation of the third driving motor 32, so that the second screening roller 8 connected through the closed disc 31 is driven to rotate in the opposite direction in the first screening roller 7, and sand can be screened more thoroughly through the simultaneous rotation of the first screening roller 7 and the second screening roller 8 in the opposite directions;

the roller driving mechanism 9 is rotationally connected with the first screening roller 7; the roller driving mechanism 9 comprises a fourth driving motor 34, a supporting connecting rod 35, a first gear 36 and a first roller 37, a first baffle 38 and a second baffle 39 are respectively arranged on two sides of the upper end surface of the supporting frame 6, the fourth driving motor 34 penetrates through the first baffle 38 and is connected with the supporting connecting rod 35, one end, far away from the fourth driving motor 34, of the supporting connecting rod 35 is connected with the inner side surface of the second baffle 39 through a second bearing 40, the first gear 36 and the first roller 37 are both fixedly connected with the supporting connecting rod 35, the first gear 36 is meshed with the gear disc 27, and the first roller 37 is clamped with the rotating track 28; the first screening roller 7 connected with the support is driven to rotate by driving the support connecting rod 35, the first gear 36 and the first roller 37 to rotate by the rotation of the fourth driving motor 34; two roller driving mechanisms 9 are symmetrically arranged on the upper end face of the support frame 6, the two roller driving mechanisms 9 are both used for supporting and rotating the first screening roller 7 and the second screening roller 8, the supporting and stabilizing effect on the first screening roller 7 and the second screening roller 8 can be further improved due to the arrangement of the two roller driving mechanisms 9, and meanwhile, the rotating effect of the first screening roller 7 can be improved;

the conveyer belt 3 comprises a first conveyer belt 10 and a second conveyer belt 11, and the conveyer belt 3 is used for conveying sieve materials; first conveyer belt 10 sets up under first screening cylinder 7, and the slope of second conveyer belt 11 upwards sets up, and the least significant end and the one end that first conveyer belt 10 is in feed hopper 1 below of second conveyer belt 11 are connected, and first conveyer belt 10 all is provided with the miniature lug 41 of a plurality of on the surface with second conveyer belt 11, and the setting of miniature lug 41 can play certain effect that blocks, and the sand of being convenient for is carried, prevents the condition of landing.

In this embodiment, as shown in fig. 6, both ends of the second rotating shaft 19 are rotatably connected to the inside of the feeding funnel 1 through the first bearing 22, the first bearing 22 makes the two second stirring bodies 15 have a good rotating effect, the outer side of the feeding funnel 1 is provided with the motor support plate 23, the first driving motor 13 is fixedly arranged on the upper end surface of the motor support plate 23, the motor support plate 23 is used for supporting the first driving motor 13, the lower part of the feeding funnel 1 is inclined towards the roller screen machine main body 2 from top to bottom, the discharging end of the feeding funnel 1 is close to the second screening roller 8, the discharging of the feeding funnel 1 is inclined towards the roller screen machine main body 2 and the sand inside the feeding funnel 1 is convenient to discharge by the arrangement of the second screening roller 8.

In the present embodiment, as shown in fig. 1, the second support legs 42 are provided below the support frame 6 and the conveyor belt 3, the second support legs 42 are used for supporting the conveyor belt 3 and the support frame 6, the lower end surfaces of the second support legs 42 and the lower end surfaces of the support legs 12 are provided with the support plates 43, and the support effect of the support legs 12 and the second support legs 42 can be further improved by the support plates 43.

An application method of an anti-blocking sand screening machine for prefabricated parts of building engineering comprises the following steps:

s1: stirring the sand body: when sand bodies are screened and conveyed, firstly, the sand bodies are infused into the feeding funnel 1 for scattering and discharging treatment, when the sand bodies enter the feeding funnel 1, the first driving motor 13 is started, the first stirring body 14 is driven to rotate by the rotation of the first driving motor 13, the two second stirring bodies 15 are also driven to rotate by the connection of the chain 16, the scattered sand or the blocked sand bodies are scattered and conveyed by the plurality of rotating stirring sheets 18 and the second stirring sheets 20 which are arranged in a staggered manner, and when the scattered sand needs to be discharged through the discharging end, the rotating rod 25 and the plurality of material pushing plates 26 are driven to rotate by the rotation of the second driving motor 24, so that the sand is pushed into the first screening roller 7 and the second screening roller 8 for screening treatment;

s2: screening and stirring sand bodies: when sand is screened, the support connecting rod 35, the first gear 36 and the first roller 37 are driven to rotate by the rotation of the fourth driving motor 34, so that the first screening roller 7 connected with the support is driven to rotate, the closed disc 31 is driven to rotate by the rotation of the third driving motor 32 while the first screening roller 7 rotates, so that the second screening roller 8 connected with the closed disc 31 is driven to rotate in the first screening roller 7 in the opposite direction, and the sand can be screened more thoroughly by the simultaneous rotation of the first screening roller 7 and the second screening roller 8 in the opposite direction;

s3: conveying sand: the sand can fall into the surface of the first conveyer belt 10 to be conveyed after being screened by the first screening roller 7 and the second screening roller 8, the sand on the surface is conveyed to the second conveyer belt 11 by the first conveyer belt 10, and then the screened sand is discharged by the second conveyer belt 10 which is obliquely and upwards arranged.

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to achieve the technical effect basically.

It is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or system in which the element is included.

The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An anti-blocking sand screening machine for prefabricated components in constructional engineering comprises a feeding funnel (1), a roller screening machine main body (2) and a conveying belt (3), and is characterized in that a stirring mechanism (4) is arranged above the interior of the feeding funnel (1), and a material pushing mechanism (5) is arranged at a discharge hole of the feeding funnel (1); the feeding hopper (1) is supported by a plurality of supporting legs (12);

the roller screening machine main body (2) comprises a support frame (6), a first screening roller (7), a second screening roller (8) and a roller driving mechanism (9), the first screening roller (7), the second screening roller (8) and the roller driving mechanism (9) are all arranged on the upper end face of the support frame (6), the second screening roller (8) rotates in the first screening roller (7), and the roller driving mechanism (9) is rotatably connected with the first screening roller (7);

the conveyer belt (3) is including first conveyer belt (10) and second conveyer belt (11), conveyer belt (3) are used for carrying the sieve material.

2. The anti-blocking sand screening machine for the building engineering prefabricated part according to claim 1, characterized in that: rabbling mechanism (4) are including first driving motor (13), the first stirring body (14) and two second stirring bodies (15), first stirring body (14) and two the second stirring body (15) all with the inside top of feed hopper (1) is rotated and is connected, first driving motor (13) set up the outside of feed hopper (1) and with first stirring body (12) are connected, first stirring body (14) and two the second stirring body (15) are connected through chain (16).

3. The anti-blocking sand screening machine for the building engineering prefabricated part according to claim 2, characterized in that: first stirring body (14) is including first axis of rotation (17) and a plurality of stirring piece (18), a plurality of stirring piece (18) are in evenly distributed on first axis of rotation (17), first axis of rotation (17) with the output of first driving motor (13) is connected, second stirring body (15) is including second axis of rotation (19) and a plurality of second stirring piece (20), a plurality of second stirring piece (20) are in evenly distributed on second axis of rotation (19), two second stirring body (15) set up respectively the both sides of first stirring body (14), set up on first axis of rotation (17) stirring piece (18) with on second axis of rotation (19) second stirring piece (20) set up in a staggered way each other.

4. A sand screen for use in construction works as claimed in claim 3, wherein: the both ends of second axis of rotation (19) all through first bearing (22) with the inside of feed hopper (1) is rotated and is connected, the outside of feed hopper (1) is provided with motor support board (23), first driving motor (13) are fixed to be set up the up end of motor support board (23), the below of feed hopper (1) from top to bottom to cylinder screen machine main part (2) direction slope, the discharge end of feed hopper (1) is close to second screening cylinder (8).

5. The anti-blocking sand screening machine for the building engineering prefabricated part according to claim 1, characterized in that: pushing equipment (5) are including second driving motor (24), dwang (25) and a plurality of scraping wings (26), a plurality of the even vertical setting of scraping wings (26) is in the surface of dwang (25), second driving motor (24) are fixed to be set up the top on feed hopper (1) discharge end surface, the output of second driving motor (24) runs through feed hopper (1) and with dwang (25) are connected, dwang (25) are in the vertical setting in inside of feed hopper (1) discharge end.

6. The anti-blocking sand screening machine for the building engineering prefabricated part according to claim 1, characterized in that: the utility model discloses a screening drum, including first screening drum (7), ring channel (29), second screening drum (8), motor support frame (33) and support frame (6), the both sides on first screening drum (7) surface are provided with toothed disc (27) and rotation track (28) respectively, ring channel (29) have all been seted up to the both sides of first screening drum (7) inner wall, the both sides on second screening drum (8) surface be provided with respectively with ring channel (29) sliding connection's annular piece (30), second screening drum (8) are close to the one end of toothed disc (27) is provided with closed dish (31), the surface that closed dish (31) is passed through third driving motor (32) and is connected, the below of third driving motor (32) pass through motor support frame (33) with the up end fixed connection of support frame (6).

7. The anti-blocking sand screening machine for the building engineering prefabricated part according to claim 6, characterized in that: the roller driving mechanism (9) comprises a fourth driving motor (34), a supporting connecting rod (35), a first gear (36) and a first roller (37), wherein a first baffle (38) and a second baffle (39) are respectively arranged on two sides of the upper end face of the supporting frame (6), the fourth driving motor (34) penetrates through the first baffle (38) and is connected with the supporting connecting rod (35), one end, far away from the fourth driving motor (34), of the supporting connecting rod (35) is connected with the inner side face of the second baffle (39) through a second bearing (40), the first gear (36) and the first roller (37) are fixedly connected with the supporting connecting rod (35), the first gear (36) is connected with the gear disc (27) in a meshing manner, the first roller (37) is clamped with the rotating track (28), and the two roller driving mechanisms (9) are symmetrically arranged on the upper end face of the supporting frame (6), the two roller driving mechanisms (9) are used for supporting and rotating the first screening roller (7) and the second screening roller (8).

8. The anti-blocking sand screening machine for the building engineering prefabricated part according to claim 1, characterized in that: first conveyer belt (10) set up under first screening cylinder (7), second conveyer belt (11) slope upwards sets up, the least significant end of second conveyer belt (11) with first conveyer belt (10) are in the one end of feed hopper (1) below is connected, first conveyer belt (10) with the second conveyer belt (11) all be provided with a plurality of miniature lug (41) on the surface.

9. The anti-blocking sand screening machine for the building engineering prefabricated part according to claim 1, characterized in that: the support frame (6) with the below of conveyer belt (3) all is provided with second supporting leg (42), the lower terminal surface of second supporting leg (42) and the lower terminal surface of supporting leg (12) all is provided with backup pad (43).

10. The utility model provides a use method of anti-blocking sand screen that building engineering prefabricated component used which characterized in that: the method comprises the following steps:

s1: stirring the sand body: when the sand body is screened and conveyed, firstly, the sand body is infused into the feeding hopper (1) for scattering and discharging treatment, when sand enters the feeding hopper (1), a first driving motor (13) is started, the first stirring body (14) is driven to rotate by the rotation of the first driving motor (13), two second stirring bodies (15) are also driven to rotate by the connection of a chain (16), the loose sand or the block sand is scattered and conveyed by a plurality of rotating stirring sheets (18) which are arranged in a staggered way and a second stirring sheet (20), when the scattered sand needs to be discharged through the discharge end, the rotating rod (25) and the plurality of material pushing plates (26) are driven to rotate by utilizing the rotation of the second driving motor (24), thereby pushing the sand into the first screening drum (7) and the second screening drum (8) for screening treatment;

s2: screening and stirring sand bodies: when sand is screened, a support connecting rod (35), a first gear (36) and a first roller (37) are driven to rotate by the rotation of a fourth driving motor (34), so that a first screening roller (7) connected with the support is driven to rotate, a closed disc (31) is driven to rotate by the rotation of a third driving motor (32) while the first screening roller (7) rotates, so that a second screening roller (8) connected with the closed disc (31) is driven to rotate in the first screening roller (7) in the opposite direction, and sand can be screened more thoroughly by the simultaneous rotation of the first screening roller (7) and the second screening roller (8) in the opposite directions;

s3: conveying sand: the sand is screened by the first screening roller (7) and the second screening roller (8) and then falls to the surface of the first conveyer belt (10) to be conveyed, the sand on the surface is conveyed to the second conveyer belt (11) by the first conveyer belt (10), and finally the screened sand is discharged by the second conveyer belt (10) which is obliquely arranged upwards.