CN114011697A

CN114011697A - Fine sand roller screening machine and control system thereof

Info

Publication number: CN114011697A
Application number: CN202111218635.5A
Authority: CN
Inventors: 王黎明
Original assignee: Changzhou Xinli Tianhe Powder Equipment Co ltd
Current assignee: Changzhou Xinli Tianhe Powder Equipment Co ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-02-08

Abstract

The invention discloses a fine sand roller screening machine and a control system thereof, which comprise a screening mechanism, a drying mechanism and an anti-blocking mechanism which are arranged in a casing, wherein the drying mechanism is used for heating and drying sand stones screened in the screening mechanism, and the anti-blocking mechanism prevents the sand stones from being stuck on the screening mechanism; the screening mechanism comprises a polygonal rotary screen and a first driving device for driving the polygonal rotary screen to rotate in the shell, and the polygonal rotary screen comprises a multi-angle support frame and a plurality of window type meshes detachably connected with the multi-angle support frame; this meticulous sand drum screening machine and control system thereof changes traditional circular drum sieve into 8 jiaos or 12 jiaos drum sieves, solves the stifled net problem of grit, and slice window formula structural style is made to whole screen cloth, is convenient for change and maintain, and control system controls the device operation to thereby the humiture condition of the grit of screening in the monitoring drum sieve adjusts the temperature and dries it, and the cooperation prevents that stifled mechanism further avoids the screen cloth to block up, the screening quality of effectual assurance grit.

Description

Fine sand roller screening machine and control system thereof

Technical Field

The invention belongs to the technical field of drum screening machines, and particularly relates to a drum screening machine for fine sand and a control system thereof.

Background

At present, traditional drum sieve can only be used for the screening of coarse sand in the market, the screening to fine and thin sand does not have the ability, the fine sand screening of especially large output, traditional drum sieve screen cloth is whole circular, when rotary motion is done at the sieve, the grit is hugged closely on the screen cloth under the centrifugal force effect, very easily block up the screen cloth, screening efficiency is low, the screen cloth is mostly integrative fixed structure with the reel simultaneously, it is comparatively inconvenient to lead to the change when damage appears in the later stage, and the drum screening machine among the prior art also does not set up the device that can discern the grit condition, be not convenient for improve the screening quality of grit.

Disclosure of Invention

The purpose of the invention is as follows: the utility model provides a meticulous sand cylinder screening machine and control system thereof to solve the above-mentioned problem that prior art exists.

The technical scheme is as follows:

a drum screening machine for fine sand comprises a screening mechanism, a drying mechanism and an anti-blocking mechanism, wherein the screening mechanism, the drying mechanism and the anti-blocking mechanism are arranged in a casing, the drying mechanism is used for heating and drying sand and stones screened in the screening mechanism, and the anti-blocking mechanism prevents the sand and stones from being stuck on the screening mechanism;

the screening mechanism comprises a polygonal rotary screen and a first driving device for driving the polygonal rotary screen to rotate in the shell, the first driving device is a first motor, and the polygonal rotary screen comprises a multi-angle support frame and a plurality of window type meshes detachably connected with the multi-angle support frame;

the upper end of the shell is of an open structure, and the upper end of the shell is detachably provided with dustproof tarpaulin; supplementary polygon drum sieve again through the cooperation of stoving mechanism with prevent stifled mechanism for the device's use can effectually avoid the mesh to be blockked up, sets up a plurality of detachable window formula net pieces simultaneously and can solve a local damage of whole screen cloth and need whole drawback of trading the net.

In a further embodiment, a feeding port and a discharging port are respectively arranged at two ends of the casing, and an observation window is arranged on the casing; can be convenient for the feeding and discharging of the sandstone.

In a further embodiment, the polygonal drum screen is 8-degree or 12-degree, the polygonal drum screen further comprises a long shaft connected to the output end of the first motor, a supporting pipe is arranged on the long shaft, and one end, which is not connected with the long shaft, of the supporting pipe is connected with a multi-angle supporting frame;

the multi-corner support frame is detachably connected with the window type meshes through the mounting assembly, and the plurality of window type meshes are circumferentially and longitudinally arranged along the outside of the multi-corner support frame; the fine screen mesh is very easy to damage in work, and the window type multi-piece mesh structure solves the defect that the whole mesh needs to be replaced as long as one large mesh is damaged, greatly reduces the use cost and the replacement time, and can generate huge comprehensive benefits.

In a further embodiment, the mounting assembly comprises a vertical rod fixed on the supporting pipe, the vertical rod is arranged between the two window type meshes, a pressure plate for limiting the two window type meshes penetrates through the vertical rod, and a locking nut for limiting the pressure plate is connected to the vertical rod in a threaded manner;

positioning rods are arranged on the polygonal support frames positioned on the two sides of the vertical rod, the positioning rods are in matched insertion with the positioning grooves, and the positioning grooves are formed in one surface, facing the polygonal support frames, of the window type net piece; the window type mesh can be conveniently and quickly disassembled and assembled.

In a further embodiment, the supporting pipe pieces are crossed, a plurality of supporting pipe pieces are arranged on the long shaft along the length direction of the long shaft, and every two adjacent supporting pipe pieces separate the multi-angle supporting frame into a screening space; screens with different meshes can be arranged in sections, and one screen with different meshes can be arranged in each section to screen sand with various specifications.

In a further embodiment, the drying mechanism is arranged on the inner wall of the machine shell at a position corresponding to the polygonal drum screen, and the drying mechanism comprises a drying frame and a heating pipe arranged in the drying frame;

one side of the drying frame, which corresponds to the polygonal drum screen, is provided with a protective net;

a pushing piece is arranged on one surface of the drying frame corresponding to the shell and used for adjusting the using position of the drying frame; the running heating pipe can dry the wet sand.

In a further embodiment, the pushing member is arranged in a receiving groove formed in the inner wall of the machine shell, the pushing member is a threaded pushing rod, one end of the threaded pushing rod penetrates through the machine shell and extends into the receiving groove and is rotatably connected with the connecting seat, and the connecting seat is hinged with one surface, close to the machine shell, of the drying frame through a first pin shaft;

one surface of the accommodating groove facing the polygonal rotary screen is provided with an opening for the drying frame to enter and exit, and the accommodating groove is used for accommodating the drying frame;

a connecting spring is connected between the drying frame and the accommodating groove; the use position of the drying frame can be adjusted.

In a further embodiment, the anti-blocking mechanism is arranged on the inner wall of the machine shell at a position corresponding to the polygonal rotary screen, the anti-blocking mechanism comprises an anti-blocking device and a second driving device for driving the anti-blocking device to operate, the second driving device is a second motor, and a first transmission belt is sleeved on the output end of the second motor;

the anti-blocking devices are arranged in a plurality of numbers, the anti-blocking devices are driven by a second driving belt, and the first driving belt is connected with one anti-blocking device;

the anti-blocking device comprises a transition seat, an anti-blocking block and a telescopic piece, wherein two sides of the anti-blocking block are connected to one surface of the transition seat corresponding to the polygonal drum screen through buffer pieces, the anti-blocking block is of a spherical structure, a cross shaft penetrates through the anti-blocking block, and two ends of the cross shaft extend out of the anti-blocking block and are respectively connected with two fixing plates in a rotating mode;

the buffer piece comprises two inclined rods arranged between the fixed plate and the transition seat, a buffer spring is connected between the two inclined rods, second pin shafts are mounted at two ends of each inclined rod, one end of each inclined rod is hinged with the fixed plate through one second pin shaft, and the other end of each inclined rod is hinged on the transition seat through the other second pin shaft; the running anti-blocking mechanism can hit and fall the wet sand stuck on the screen frame, so that the sand is favorably dried and screened, and the mesh blockage is avoided.

In a further embodiment, the telescopic part comprises a threaded sleeve which is penetratingly mounted on the shell wall of the machine shell, and an internal screw which is arranged in the threaded sleeve and is in threaded fit with the threaded sleeve, the internal screw is connected with the transition seat, and the threaded sleeve extends out of the machine shell and is connected with the first transmission belt;

a support rod matched with the telescopic piece is further arranged between the transition seat and the machine shell, third pin shafts are mounted at two ends of the support rod, one end of the support rod is hinged with the transition seat through a third pin shaft, and the other end of the support rod is hinged on the movable block through another third pin shaft;

a sliding block is arranged on one surface of the moving block, which is close to the shell, and the sliding block is connected in a sliding groove formed in the inner wall of the shell in a sliding manner; the position of the anti-blocking block can be adjusted through the expansion of the expansion piece, and the stability of the expansion piece can be guaranteed through the matching rotation of the supporting rod.

A control system of a fine sand roller screening machine comprises a control unit, a detection unit and an operation unit, wherein the detection unit and the operation unit are connected with a transmission unit, the transmission unit is used for receiving data detected by the detection unit and transmitting the data to the control unit, and the control unit analyzes the data, generates a command and transmits the command to the operation unit through the transmission unit;

the operation unit comprises a screening module, a drying module and an anti-blocking module, wherein the screening module is used for controlling the operation of the screening mechanism, the drying module is used for controlling the operation of the drying mechanism, and the anti-blocking module is used for controlling the operation of the anti-blocking mechanism;

the control unit comprises an intelligent terminal, the transmission unit comprises a single chip microcomputer, and the detection unit comprises a temperature and humidity sensor for detecting the temperature and humidity of the gravel in the polygonal rotary screen; can intelligent control stoving mechanism operation, use manpower resources sparingly and improve screening quality.

The invention has the beneficial effects that:

(1) the window type mesh used by the device is fixed on the outer frame along the circumference and the longitudinal direction of the outer frame of the sieve by using the quick dismounting pressing plate, and the upper outer cover is covered by using the dustproof tarpaulin, so that the defect that the whole screen is replaced when one part of the whole screen is damaged is overcome; the whole screen is made into a sheet window type structure form, a window type frame plate with a convex-concave groove wood structure is used for pressing the screen and is fixed on the polygonal roller screen, each net piece is light in weight, and the broken net piece is replaced by the broken net piece, so that the replacement mode also effectively improves the working environment, is different from the traditional equipment and needs to be replaced by drilling equipment, saves the maintenance cost, conservatively estimates the maintenance cost by more than 10 times, improves the screening efficiency by more than 8 times, and reduces the screen replacement time by more than 6 times;

(2) the traditional circular drum screen is changed into an 8-angle or 12-angle drum screen, so that the problem of sand blocking is solved, sand can form a mutual impact state on a screen surface, the condition of blocking the screen is greatly reduced (the screen is extremely easy to damage by a traditional flapping structure), screens with different meshes can be arranged in sections, and one screen with different meshes can be arranged in each section to screen sand with various specifications at the same time, so that the practicability is further improved;

(3) through setting up stoving mechanism, the device can be under the condition of the humiture of grit in detecting screening mechanism, heat and dry the moist grit, the grit after the drying can avoid gluing on the net piece, further avoid appearing the condition of screen hole jam, and simultaneously, still be equipped with anti-blocking mechanism, anti-blocking mechanism and polygon drum sieve and stoving mechanism mutually support, better play anti-blocking's effect, make the device's screening efficiency better, and anti-blocking mechanism, screening mechanism and stoving mechanism are all controlled through intelligent terminal, only need set up relevant data in advance in intelligent terminal and can intelligent operation, the effectual human time of having saved, improve the availability factor.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a front sectional structural schematic diagram of the housing of the present invention.

Fig. 3 is a side sectional structural schematic view of the housing and polygonal trommel of the present invention.

Fig. 4 is a schematic perspective view of a polygonal trommel according to the present invention.

Fig. 5 is an enlarged schematic view of the structure at a in fig. 2 according to the present invention.

Fig. 6 is an enlarged schematic view of the invention at B in fig. 3.

Fig. 7 is an enlarged view of the structure of fig. 3 at C according to the present invention.

Fig. 8 is an enlarged view of the structure of fig. 3D according to the present invention.

FIG. 9 is a schematic diagram of the control system of the present invention.

The reference signs are: a machine shell 1, a feeding port 11, a discharging port 12, a dustproof awning cloth 13, an observation window 14, a sliding chute 15, a containing groove 16, a screening mechanism 2, a polygonal drum screen 3, a long shaft 31, a supporting pipe piece 32, a multi-angle supporting frame 33, a positioning rod 331, a window type net piece 34, a positioning groove 341, a mounting component 35, a pressing plate 351, a vertical rod 352, a locking nut 353, a first driving device 4, an anti-blocking mechanism 5, a second driving device 51, a first transmission belt 52 and a second transmission belt 53, the drying mechanism 6, the drying frame 61, the connecting spring 611, the first pin shaft 612, the heating pipe 62, the protective net 63, the threaded push rod 64, the connecting seat 641, the anti-blocking device 7, the telescopic member 71, the threaded sleeve 711, the internal screw 712, the anti-blocking block 72, the transverse shaft 721, the support rod 73, the third pin shaft 731, the moving block 732, the sliding block 733, the buffer member 74, the fixing plate 741, the inclined rod 742, the second pin shaft 743, the buffer spring 744, and the transition seat 75.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-8, the drum screening machine for fine sand disclosed by the invention comprises a screening mechanism 2, a drying mechanism 6 and an anti-blocking mechanism 5 which are arranged in a casing 1, wherein the drying mechanism 6 is used for heating and drying the sand and stones screened in the screening mechanism 2, and the anti-blocking mechanism 5 prevents the sand and stones from being adhered to the screening mechanism 2; the screening mechanism 2 comprises a polygonal rotary screen 3 and a first driving device 4 for driving the polygonal rotary screen 3 to rotate in the machine shell 1, the first driving device 4 is a first motor, and the polygonal rotary screen 3 comprises a multi-angle support frame 33 and a plurality of window type meshes 34 detachably connected with the multi-angle support frame 33; the polygonal drum screen 3 is 8 or 12, the polygonal drum screen 3 further comprises a long shaft 31 connected to the output end of the first motor, a supporting pipe 32 is arranged on the long shaft 31, and one end, which is not connected with the long shaft 31, of the supporting pipe 32 is connected with a polygonal supporting frame 33; the multi-angle support frame 33 is detachably connected with the window type meshes 34 through a mounting assembly 35, and the window type meshes 34 are circumferentially and longitudinally arranged along the outer side of the multi-angle support frame 33; the mounting assembly 35 comprises a vertical rod 352 fixed on the supporting pipe member 32, the vertical rod 352 is arranged between the two window type meshes 34, a pressure plate 351 used for limiting the two window type meshes 34 penetrates through the vertical rod 352, and a locking nut 353 used for limiting the pressure plate 351 is connected to the vertical rod 352 in a threaded manner; positioning rods 331 are arranged on the polygonal support frames 33 positioned on the two sides of the vertical rod 352, the positioning rods 331 are matched and inserted with the positioning grooves 341, and the positioning grooves 341 are formed in one surface, facing the polygonal support frames 33, of the window type mesh 34; the supporting pipe fittings 32 are crossed, a plurality of supporting pipe fittings 32 are arranged on the long shaft 31 along the length direction of the long shaft 31, and each two adjacent supporting pipe fittings 32 separate the multi-angle supporting frame 33 into a screening space; when the window type mesh 34 is installed, the window type mesh 34 is attached to the multi-angle support frame 33, the positioning grooves 341 in the window type mesh 34 can be connected with the positioning rods 331 at the corresponding positions, the window type mesh 34 is also positioned on one side of the vertical rods 352 at the moment, then the pressure plate 351 penetrates through the vertical rods 352 to enable the pressure plate 351 to be pressed tightly on the window type mesh 34, the locking nuts 353 are installed on the vertical rods 352, and the locking nuts 353 are rotated to limit the pressure plate 351, so that the window type mesh 34 is fixed;

the upper end of the shell 1 is of an open structure, and the upper end of the shell 1 is detachably provided with dustproof awning cloth 13; a feeding port 11 and a discharging port 12 are respectively arranged at two ends of the machine shell 1, and an observation window 14 is arranged on the machine shell 1; the feeding port 11 and the discharging port 12 are both communicated with the polygonal drum screen 3, so that the sand and stone can enter and can be discharged after being screened conveniently; when the device operates, the sand and stone enter the screening mechanism 2 and are screened by the rotating polygonal rotary screen 3, in the process, the drying mechanism 6 transfers heat to the screening mechanism 2 to dry the sand and stone, and the anti-blocking mechanism 5 can also hit the polygonal rotary screen 3 to hit down the sand and stone stuck on the net, so that the mesh is prevented from being blocked by the wet sand and stone;

the drying mechanism 6 is arranged on the inner wall of the machine shell 1 at a position corresponding to the polygonal drum screen 3, and the drying mechanism 6 comprises a drying frame 61 and a heating pipe 62 arranged in the drying frame 61; one surface of the drying frame 61 corresponding to the polygonal drum screen 3 is provided with a protective net 63; a pushing piece is arranged on one surface of the drying frame 61 corresponding to the machine shell 1 and used for adjusting the using position of the drying frame 61; the pushing element is arranged in a containing groove 16 formed in the inner wall of the machine shell 1, the pushing element is a threaded pushing rod 64, one end of the threaded pushing rod 64 penetrates through the machine shell 1 to extend into the containing groove 16 and is rotatably connected with the connecting seat 641, and the connecting seat 641 is hinged with one surface of the drying frame 61 close to the machine shell 1 through a first pin shaft 612; one surface of the accommodating groove 16 facing the polygonal drum screen 3 is provided with an opening for the drying frame 61 to enter and exit, and the accommodating groove 16 is used for accommodating the drying frame 61; a connecting spring 611 is connected between the drying frame 61 and the accommodating groove 16; when the drying frame 61 is not used, the drying frame 61 can be completely accommodated in the accommodating groove 16, and when the drying frame 61 needs to be matched with the polygonal drum screen 3 for use, the threaded push rod 64 needs to be rotated, so that the connecting seat 641 drives the drying frame 61 to move to the open position until the drying frame 61 moves to a proper position, and the angle of the drying frame 61 can be adjusted through rotation of the first pin shaft 612, so that the drying frame 61 can be better matched with the angle of the polygonal drum screen 3;

in order to avoid the attachment of moist sand and stone to the mesh openings, the anti-blocking mechanism 5 is arranged on the inner wall of the machine shell 1 at a position corresponding to the polygonal rotary screen 3, the anti-blocking mechanism 5 comprises an anti-blocking device 7 and a second driving device 51 for driving the anti-blocking device 7 to operate, the second driving device 51 is a second motor, and a first driving belt 52 is sleeved on the output end of the second motor; the anti-blocking devices 7 are arranged in a plurality, the anti-blocking devices 7 are driven by a second driving belt 53, and the first driving belt 52 is connected with one anti-blocking device 7; the anti-blocking device 7 comprises a transition seat 75, an anti-blocking block 72 and a telescopic piece 71, wherein two sides of the anti-blocking block 72 are connected to one surface of the transition seat 75 corresponding to the polygonal rotary screen 3 through buffer pieces 74, the anti-blocking block 72 is of a spherical structure, a transverse shaft 721 penetrates through the anti-blocking block 72, and two ends of the transverse shaft 721 extend out of the anti-blocking block 72 and are respectively connected with two fixing plates 741 in a rotating manner; the buffer member 74 includes two diagonal rods 742 arranged between the fixing plate 741 and the transition seat 75, a buffer spring 744 is connected between the two diagonal rods 742, the two ends of the diagonal rod 742 are both provided with second hinge pins 743, one end of the diagonal rod 742 is hinged to the fixing plate 741 through the second hinge pins 743, and the other end of the diagonal rod 742 is hinged to the transition seat 75 through the other second hinge pin 743; the telescopic member 71 comprises a threaded sleeve 711 which is installed on the wall of the casing 1 in a penetrating manner, and an internal screw 712 which is arranged in the threaded sleeve 711 and is in threaded fit with the threaded sleeve 711, wherein the internal screw 712 is connected with the transition seat 75, and the threaded sleeve 711 extends out of the casing 1 and is connected with the first transmission belt 52; a supporting rod 73 matched with the telescopic piece 71 is further arranged between the transition seat 75 and the machine shell 1, third pin shafts 731 are respectively installed at two ends of the supporting rod 73, one end of the supporting rod 73 is hinged with the transition seat 75 through the third pin shafts 731, and the other end of the supporting rod 73 is hinged on the moving block 732 through the other third pin shaft 731; a sliding block 733 is mounted on one surface of the moving block 732 close to the machine shell 1, and the sliding block 733 is connected in a sliding groove 15 formed in the inner wall of the machine shell 1 in a sliding manner; when the anti-blocking mechanism 5 is used, the second motor rotates to operate, so that the threaded sleeve 711 connected with the second motor is driven to rotate by the first transmission belt 52, other threaded sleeves 711 are driven to rotate by the second transmission belt 53, the internal screw 712 in threaded connection can displace along with the rotation of the threaded sleeve 711, and further the transition seat 75 and the anti-blocking block 72 connected with the transition seat are pushed to move, because the second motor can rotate in the forward and reverse directions, the anti-blocking block 72 is close to or far away from the polygonal drum screen 3 due to the extension and retraction of the internal screw 712, the anti-blocking block 72 is hit on the polygonal drum screen 3, the bonded sand can be hit off, because the anti-blocking block 72 is arranged with the transverse shaft 721, the spherical structure of the anti-blocking block 72 cannot influence the rotation of the polygonal drum screen 3, and when the anti-blocking block 72 is in contact with the polygonal drum screen 3, the buffer 74 can prevent the anti-blocking block 72 from being hard to knock on the polygonal drum screen 3, the supporting rod 73 is synchronously matched with the inner screw 712, when the inner screw 712 moves, the transition seat 75 drives the supporting rod 73 to rotate through the third pin 731, and the moving block 732 is pulled to slide in the sliding groove 15 through the sliding block 733 while the supporting rod 73 is in running fit, so that the transition seat 75 is adapted to move;

referring to fig. 9, the control system of the drum screening machine for fine sand disclosed by the present invention comprises a control unit, a detection unit and an operation unit, wherein the detection unit and the operation unit are connected to a transmission unit, the transmission unit is used for receiving data detected by the detection unit and transmitting the data to the control unit, and the control unit analyzes the data and generates a command and transmits the command to the operation unit through the transmission unit; the operation unit comprises a screening module, a drying module and an anti-blocking module, the screening module is used for controlling the operation of the screening mechanism 2, the drying module is used for controlling the operation of the drying mechanism 6, and the anti-blocking module is used for controlling the operation of the anti-blocking mechanism 5; the control unit comprises an intelligent terminal, the transmission unit comprises a single chip microcomputer, and the detection unit comprises a temperature and humidity sensor for detecting the temperature and humidity of the gravel in the polygonal rotary screen 3; corresponding data have been set for in advance in intelligent terminal, for example, the standard data of humiture etc, when data are higher than or are less than preset temperature, drying module then need carry out corresponding regulation, make heating pipe 62 temperature regulation, the device moves, the humiture state of screening when detecting element receives grit screening through temperature and humidity sensor, carry the data to intelligent terminal in through detecting element's singlechip, intelligent terminal analysis data and preset data, and then generate the order and send to operating unit's drying module, the heating pipe 62 that starts among the stoving frame 61 carries out the stoving operation to the grit.

The implementation principle of the invention is as follows: when the device is operated, can adjust stoving mechanism 6 earlier, will dry frame 61 and release through the impeller and accomodate groove 16, adjust the angle of stoving frame 61, make stoving frame 61 can correspond with polygon drum sieve 3, later grit gets into back in the polygon drum sieve 3, intelligent terminal control screening mechanism 2 begins to operate, first motor drives polygon drum sieve 3 and rotates, thereby make the grit form the impact state each other through the rotation in the net frame, and then screened, at this in-process, temperature and humidity sensor detects the state of grit, and with data feedback to intelligent terminal in, intelligent terminal control heating pipe 62 moves, make heating pipe 62 can be in suitable temperature and dry the grit, improve the screening effect of grit, and the practicality is increased.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the embodiments, and various equivalent changes can be made to the technical solution of the present invention within the technical idea of the present invention, and these equivalent changes are within the protection scope of the present invention.

Claims

1. The utility model provides a meticulous sand drum screening machine which characterized in that: the sand and stone drying and screening machine comprises a screening mechanism, a drying mechanism and an anti-blocking mechanism which are arranged in a machine shell, wherein the drying mechanism is used for heating and drying sand and stones screened in the screening mechanism, and the anti-blocking mechanism prevents the sand and stones from being adhered to the screening mechanism;

the upper end of the casing is of an open structure, and the upper end of the casing is detachably provided with dustproof tarpaulin.

2. The fine sand roller screen machine according to claim 1, characterized in that: the two ends of the casing are respectively provided with a feeding port and a discharging port, and the casing is provided with an observation window.

3. The fine sand roller screen machine according to claim 1, characterized in that: the polygonal rotary screen is 8 or 12, the polygonal rotary screen further comprises a long shaft connected to the output end of the first motor, a supporting pipe fitting is arranged on the long shaft, and one end, which is not connected with the long shaft, of the supporting pipe fitting is connected with a polygonal supporting frame;

the multi-angle support frame is detachably connected with the window type net sheets through the mounting assembly, and the window type net sheets are circumferentially and longitudinally arranged along the outside of the multi-angle support frame.

4. The fine sand roller screen machine according to claim 3, characterized in that: the mounting assembly comprises a vertical rod fixed on the supporting pipe fitting, the vertical rod is arranged between the two window type net sheets, a pressure plate for limiting the two window type net sheets penetrates through the vertical rod, and a locking nut for limiting the pressure plate is connected to the vertical rod in a threaded manner;

and positioning rods are arranged on the polygonal brace frames on the two sides of the vertical rod and are in matched insertion with the positioning grooves, and the positioning grooves are formed in one surface, facing the polygonal brace frames, of the window type net piece.

5. The fine sand roller screen machine according to claim 3, characterized in that: prop the pipe fitting and be the fork form, prop the pipe fitting and be in the major axis on be equipped with a plurality of along the length direction of major axis, and every two is adjacent prop the pipe fitting and separate out a screening space with the multi-angle brace frame.

6. The fine sand roller screen machine according to claim 1, characterized in that: the drying mechanism is arranged on the inner wall of the machine shell at a position corresponding to the polygonal rotary screen and comprises a drying frame and a heating pipe arranged in the drying frame;

and a pushing piece is arranged on one surface of the drying frame corresponding to the shell and used for adjusting the using position of the drying frame.

7. The fine sand roller screen machine according to claim 6, characterized in that: the pushing piece is arranged in a containing groove formed in the inner wall of the machine shell, the pushing piece is a threaded pushing rod, one end of the threaded pushing rod penetrates through the machine shell and extends into the containing groove and is rotatably connected with the connecting seat, and the connecting seat is hinged with one surface, close to the machine shell, of the drying frame through a first pin shaft;

and a connecting spring is connected between the drying frame and the accommodating groove.

8. The fine sand roller screen machine according to claim 1, characterized in that: the anti-blocking mechanism is arranged on the inner wall of the machine shell and corresponds to the position of the polygonal rotary screen, the anti-blocking mechanism comprises an anti-blocking device and a second driving device for driving the anti-blocking device to operate, the second driving device is a second motor, and a first transmission belt is sleeved on the output end of the second motor;

the buffer piece comprises two inclined rods arranged between the fixed plate and the transition seat, a buffer spring is connected between the inclined rods, second pin shafts are mounted at two ends of each inclined rod, one end of each inclined rod is hinged to the fixed plate through one second pin shaft, and the other end of each inclined rod is hinged to the transition seat through the other second pin shaft.

9. The fine sand roller screen machine according to claim 8, characterized in that: the telescopic piece comprises a threaded sleeve which penetrates through the wall of the shell and an internal screw which is arranged in the threaded sleeve and is in threaded fit with the threaded sleeve, the internal screw is connected with the transition seat, and the threaded sleeve extends out of the shell and is connected with the first transmission belt;

and a sliding block is arranged on one surface of the moving block, which is close to the shell, and the sliding block is connected in a sliding groove formed in the inner wall of the shell in a sliding manner.

10. A control system for a fine sand drum screen machine for controlling a fine sand drum screen machine according to any one of claims 1 to 9, characterized in that: the system comprises a control unit, a detection unit and an operation unit, wherein the detection unit and the operation unit are connected with a transmission unit, the transmission unit is used for receiving data detected by the detection unit and transmitting the data to the control unit, and the control unit analyzes the data, generates a command and transmits the command to the operation unit through the transmission unit;

the control unit comprises an intelligent terminal, the transmission unit comprises a single chip microcomputer, and the detection unit comprises a temperature and humidity sensor used for detecting the temperature and humidity of gravel in the polygonal rotary screen.