CN211678663U

CN211678663U - Roller sand screening machine

Info

Publication number: CN211678663U
Application number: CN201922495816.7U
Authority: CN
Inventors: 孙锟
Original assignee: Qingdao Jiaodong Machinery Manufacturing Co ltd
Current assignee: Qingdao Jiaodong Machinery Manufacturing Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-16
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to a drum sand screening machine, including the drum sieve body, the solid fixed ring that the cover was located on the drum sieve body and was fixed with it, the cover is located on the drum sieve body and fixed ring gear with it, be located the supporting component of solid fixed ring below and be located the drive assembly of drum sieve body below, the supporting component is including the first supporting seat that is located drum sieve body below and the mount pad that is located first supporting seat upper surface and is close to solid fixed ring terminal surface department, it is fixed through the fixed subassembly of detachable between mount pad and the first supporting seat, rotate on the mount pad and install the supporting wheel with solid fixed ring's outside cambered surface butt. The utility model discloses in, when wearing and tearing appear after the supporting wheel is used for a long time, for making this cylinder screening sand machine's working strength not influenced by the supporting wheel of wearing and tearing, the staff only need take off fixed subassembly to change the supporting wheel of wearing and tearing can, be favorable to this cylinder screening sand machine to keep original working strength, improved screening sand efficiency.

Description

Roller sand screening machine

Technical Field

The utility model belongs to the technical field of screening sand machine technique and specifically relates to a cylinder screening sand machine is related to.

Background

The drum sand screening machine is a special screening device developed for occupations such as power plants, coking plants, building materials, metallurgy, chemical industry, mines and the like, the drum screen comprises a drum, a rack, a funnel, a motor and the like, after materials enter the drum, the materials are screened along with the rotation of the drum, on the one hand, stones with large particle sizes flow forwards along the inclination of the drum, and sand stones with smaller particles are screened out through a screen cylinder in the drum.

The Chinese utility model patent with publication number CN202212339U discloses a roller sand screening machine, which comprises a roller screen, a frame, a belt transmission mechanism and a speed reducer, wherein the whole roller screen is conical, a rolling ring is sleeved at the big end of the roller screen, a pair of groove-shaped supporting wheels are arranged on the frame below the rolling ring, and the rolling ring is arranged in a groove of the groove-shaped supporting wheels; a rotating shaft is arranged at the center of a circle at the small-opening end of the drum screen, and the speed reducer drives the rotating shaft to rotate through a belt transmission mechanism; the axial line of the drum screen is obliquely installed, the large opening end is a feeding opening, the small opening end is a discharging opening, and the large opening end is higher than the small opening end; and a partition plate is arranged below the roller screen and close to the discharge hole. The utility model discloses a through coarse fodder export and fine material export separately with the baffle, be difficult for obscuring after the screening.

According to the roller sand screening machine in the technical scheme, the arc-shaped surface of the outer side of the roller screen is abutted to the wheel surface of the groove-shaped supporting wheel, the groove-shaped supporting wheel also rotates in the rotating process of the roller screen, and after the roller screen is used for a long time, the wheel surface of the groove-shaped supporting wheel is easily abraded greatly, the groove-shaped supporting wheel in the roller sand screening machine is inconvenient to replace, the roller sand screening machine is not beneficial to keeping the original working strength, and the sand screening efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cylinder screening sand machine, among this cylinder screening sand machine, be convenient for change with the supporting wheel of the solid fixed ring butt on the drum sieve body, be favorable to this cylinder screening sand machine to keep original working strength, improved screening sand efficiency.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a drum sand screening machine, includes that drum sieve body, cover locate on the drum sieve body and with it fixed solid fixed ring, cover locate on the drum sieve body and with it fixed ring gear, be located solid fixed ring below supporting component and be located the drum sieve body below and be used for ordering about drum sieve body pivoted drive assembly, supporting component is including being located the first supporting seat of drum sieve body below and being located the mount pad that first supporting seat upper surface is close to solid fixed ring terminal surface department, it is fixed through detachable fixed subassembly between mount pad and the first supporting seat, the mount pad is equipped with two, two the mount pad sets up about the fixed ring symmetry, and two rotate between the mount pad and install the supporting wheel with solid fixed ring's outside cambered surface butt.

Through adopting above-mentioned technical scheme, when wearing and tearing appear after the supporting wheel is used for a long time, for making the working strength of this cylinder screening sand machine not influenced by the supporting wheel of wearing and tearing, the staff only need take off fixed subassembly to change the supporting wheel of wearing and tearing can, be favorable to this cylinder screening sand machine to keep original working strength, improved screening sand efficiency.

The utility model discloses further set up to: fixed subassembly including set up last spout on first support seat upper surface, set up in first support seat and with the lower spout of last spout intercommunication, install in lower spout and rather than the complex fixed block that slides, locate threaded rod upper end and threaded connection's nut with fixed block upper surface fixed threaded rod and cover, the extending direction of going up the spout is perpendicular with the axial of supporting wheel, the extending direction of spout is parallel with the extending direction of last spout down, the threaded rod runs through spout and mount pad edge in proper order and with nut threaded connection.

Through adopting above-mentioned technical scheme, when taking off fixed subassembly, the staff only needs the unscrew nut, can promote the mount pad for the threaded rod makes the fixed block along the roll-off of last spout, makes the fixed block along the roll-off of lower spout simultaneously, and so that the staff pulls down mount pad and supporting wheel, is favorable to the staff to change the supporting wheel.

The utility model discloses further set up to: the utility model discloses a drum sieve, including first supporting seat, riser, first supporting seat and lower spout, the first supporting seat of first supporting seat upper surface is kept away from the position of drum sieve body one side, is installed jointly in first supporting seat and the lower spout and is used for carrying out the adjusting part that adjusts to the position of mount pad, the adjusting part is including installing riser on the position of first supporting seat upper surface keep away from drum sieve body one side, set up in first supporting seat upper surface and with the grafting complex inserting groove of riser lower extreme, run through the bolt that sets up on the riser and threaded connection with it and be located the spring of spout down, the one end and the mount pad bottom edge butt of its head are kept away from to the bolt, the inside wall that riser one side was kept away from.

Through adopting above-mentioned technical scheme, set up multiunit supporting component when the staff bottom the drum sieve body, and find that the wheel face of the supporting wheel among the supporting component is difficult to when the arc surface butt in the drum sieve body outside, the staff only need through adjusting part to the position of supporting wheel finely tune can, at the in-process of adjusting the supporting wheel position, the staff need unscrew the nut, screw the bolt to being close to drum sieve body one side afterwards, make bolt tip promote the mount pad along first supporting seat upper surface to the one side removal that is close to the drum sieve body, until the wheel face of supporting wheel can with the arc surface butt in the drum sieve body outside, screw up the nut once more can, with this work of adjusting the position of supporting seat has been accomplished.

The utility model discloses further set up to: first supporting seat upper surface is by last first spout and the second spout that supplies the fixed block roll-off of offering the first spout that supplies the threaded rod roll-off under to in proper order, first spout and last spout intercommunication, second spout and lower spout intercommunication.

Through adopting above-mentioned technical scheme, when dismantling the mount pad, the staff still can unscrew the nut, twists the bolt simultaneously for the position of threaded rod corresponds with first spout, follows first spout roll-off with the threaded rod afterwards, and the fixed block follows second spout roll-off, can dismantle the mount pad of one side wherein, has reduced the number that the mount pad was dismantled to the staff, is favorable to staff's quick replacement supporting wheel.

The utility model discloses further set up to: iron plates are fixed on the inner side walls of two sides of the second sliding groove, a magnetic block is arranged in the second sliding groove, the side walls of the two sides of the magnetic block are respectively attached to the opposite side walls of the two iron plates, and a handle is fixed on the side wall of one side, away from the lower sliding groove, of the magnetic block.

Through adopting above-mentioned technical scheme, through setting up the magnetic path in the second spout, and the equal inter attraction of iron plate on magnetic path and the second spout both sides inside wall to this has played good hindrance effect to the fixed block, has avoided the condition of fixed block slippage second spout to take place by oneself.

The utility model discloses further set up to: and rubber sheets made of elastic rubber materials are fixed on the inner side walls of the two sides of the inserting groove.

Through adopting above-mentioned technical scheme, the sheet rubber adopts elastic rubber material to make, has good elasticity performance, when the riser inserts the inserting groove in, through setting up the sheet rubber to make the sheet rubber can fully fill up the gap between riser and the inserting groove inside wall, be favorable to strengthening the stability of being connected between riser and the inserting groove.

The utility model discloses further set up to: the lower end of the vertical plate is fixedly provided with a guide connecting block with a trapezoidal cross section, and the area of the bottom surface of the guide connecting block is smaller than that of the upper surface of the guide connecting block.

Through adopting above-mentioned technical scheme, when the riser inserted in the inserting groove, lead the inclined plane of connecing the piece both sides and take the lead to get into in the inserting groove to this degree of difficulty that has reduced the riser and has got into in the inserting groove.

The utility model discloses further set up to: the driving assembly comprises a second supporting seat positioned below the drum screen body, a motor fixed on the second supporting seat, and a gear which is fixed with the end part of an output shaft of the motor and is meshed with the gear ring.

Through adopting above-mentioned technical scheme, when needs use this drum sand screening machine to sieve husky, the staff only need open the motor can, the motor drives the gear revolve rather than the output shaft is fixed after the work, the gear revolve back drive rather than the ring gear rotation of meshing to make and rotate with the fixed drum sieve body of ring gear, so that sieve the grit in the drum sieve body.

The utility model discloses further set up to: and a chromium coating is arranged on the outer arc surface of the fixing ring.

By adopting the technical scheme, the chromium has higher hardness and is plated on the outer arc surface of the fixing ring, so that the wear resistance of the surface of the fixing ring is enhanced, the wear of the supporting wheel to the fixing ring is reduced, and the service life of the fixing ring is prolonged.

To sum up, the utility model discloses a beneficial technological effect does:

in the scheme, when the supporting wheels are worn after long-term use, in order to prevent the working strength of the roller sand screening machine from being influenced by the worn supporting wheels, a worker only needs to take down the fixing assembly and replace the worn supporting wheels, so that the original working strength of the roller sand screening machine is maintained, and the sand screening efficiency is improved;

when the fixing assembly is taken down, a worker only needs to unscrew the nut to push the mounting seat, so that the threaded rod slides out along the upper sliding groove, and meanwhile, the fixing block slides out along the lower sliding groove, so that the mounting seat and the supporting wheel can be conveniently detached by the worker, and the worker can conveniently replace the supporting wheel;

in the scheme, the chromium has higher hardness and is plated on the outer arc surface of the fixing ring, so that the wear resistance of the surface of the fixing ring is enhanced, the abrasion of the supporting wheel to the fixing ring is reduced, and the service life of the fixing ring is prolonged.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the present invention showing a support assembly;

fig. 3 is a schematic structural view of the adjusting assembly for highlighting of the present invention.

Reference numerals: 1. a trommel body; 11. a fixing ring; 12. a ring gear; 13. an outer cylinder; 14. an inner barrel; 15. a connecting rod; 2. a support assembly; 21. a first support base; 211. a first chute; 212. a second chute; 22. a mounting seat; 23. a rotating shaft; 24. a support wheel; 3. a fixing assembly; 31. an upper chute; 32. a lower chute; 33. a fixed block; 34. a threaded rod; 35. a nut; 4. an adjustment assembly; 41. a vertical plate; 411. a connecting block; 42. inserting grooves; 421. a rubber sheet; 43. a bolt; 44. a spring; 5. an iron plate; 6. a magnetic block; 61. a handle; 7. a drive assembly; 71. a second support seat; 72. a motor; 73. a gear.

Detailed Description

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

As shown in fig. 1, for the utility model discloses a drum sand screening machine, including drum sieve body 1, solid fixed ring 11, ring gear 12 and supporting component 2. The trommel body 1 comprises an outer cylinder 13, an inner cylinder 14 and a connecting rod 15, wherein the outer cylinder 13 is of a cylindrical structure with a horizontal axis, two ends of the outer cylinder 13 are both opened, the inner diameter of the outer cylinder 13 is linearly increased from one end to the other end, the smaller end of the outer cylinder 13 is a feeding end, and the larger end of the outer cylinder 13 is a discharging end. The inner cylinder 14 is cylindric screen cloth structure, and it is located in the urceolus 13, and the bore of inner cylinder 14 is increased progressively by 13 feed ends of urceolus to 13 discharge end linearity of urceolus, through setting up inner cylinder 14 to this drum sand screening machine sieves the grit that gets into in the drum sieve body 1 in this way, makes the less grit of granule pass the mesh on the inner cylinder 14 and drop to the inboard arc surface of urceolus 13 on, finally unloads out the drum sieve body 1 outside from the discharge end of urceolus 13. The end of the inner barrel 14 adjacent the discharge end of the outer barrel 13 is closed so that the larger particles of sand continue to be retained in the inner barrel 14. The connecting rod 15 is a rod-shaped structure, one end of the connecting rod is fixed with the outer arc surface of the inner cylinder 14, and the other end of the connecting rod 15 is fixed with the inner arc surface of the outer cylinder 13 and used for fixedly connecting the outer cylinder 13 and the inner cylinder 14.

As shown in fig. 1, the fixing ring 11 is annular, the axis of the fixing ring 11 coincides with the axis of the outer cylinder 13, the fixing ring 11 is sleeved on and fixed to the outer cylinder 13, a chromium plating layer (not shown) is disposed on the outer arc surface of the fixing ring 11, and chromium has high hardness and is plated on the outer arc surface of the fixing ring 11, so that the wear resistance of the surface of the fixing ring 11 is enhanced, and the service life of the fixing ring 11 is prolonged. The axis of the gear ring 12 coincides with the axis of the outer cylinder 13, and the gear ring is sleeved on and fixed with the outer cylinder 13. As shown in fig. 2, the support assembly 2 includes a first support base 21, a mounting base 22, a rotation shaft 23, and a support wheel 24. The cross section of the first support base 21 is rectangular, and is located below the outer cylinder 13, and the bottom surface of the first support base 21 is located on the ground. The bottom surface of the mounting seat 22 is rectangular, the number of the mounting seats is two, the two mounting seats 22 are respectively located on the upper surface of the first supporting seat 21 and close to the edge of the first supporting seat 21, and the two mounting seats 22 are symmetrically arranged relative to the fixing ring 11. The rotating shaft 23 is a round bar, the axis of the rotating shaft is parallel to the axis of the outer cylinder 13, and two ends of the rotating shaft 23 are respectively connected with the two mounting seats 22 in a rotating manner. The cross section of the supporting wheel 24 is circular, and is located between the two mounting seats 22, the supporting wheel 24 is sleeved on the rotating shaft 23 and fixed with the rotating shaft, and the wheel surface of the supporting wheel 24 is abutted against the outer arc surface of the fixing ring 11.

As shown in fig. 2, the fixing assembly 3 is mounted on the mounting seat 22 and the first supporting seat 21, and as shown in fig. 3, the fixing assembly 3 includes an upper chute 31, a lower chute 32, a fixing block 33, a threaded rod 34, and a nut 35. The upper slide groove 31 opens on the upper surface of the first support base 21, and extends in a direction perpendicular to the axial direction of the outer cylinder 13 (see fig. 1). The lower chute 32 is opened in the first support seat 21, and the extending direction thereof is parallel to the extending direction of the upper chute 31, and the inner top wall of the lower chute 32 is communicated with the inner bottom wall of the upper chute 31. The fixing block 33 is a rectangular block structure, and is installed in the lower chute 32, and the fixing block 33 is in sliding fit with the lower chute 32. The axis of the threaded rod 34 is vertical, the diameter of the cross section circle is smaller than or equal to the width of the upper sliding chute 31, the lower end of the threaded rod 34 is fixed with the upper surface of the fixing block 33, and the upper end of the threaded rod 34 penetrates through the bottom edge of the mounting seat 22. The nut 35 is sleeved on the upper end of the threaded rod 34 and is in threaded connection with the threaded rod 34. When the supporting wheel 24 is installed, a worker firstly needs to align the two fixing blocks 33 with the two lower sliding grooves 32 and install the fixing blocks 33 in the lower sliding grooves 32, then the two ends of the rotating shaft 23 fixed with the supporting wheel 24 are respectively rotatably connected with the two installation bases 22, meanwhile, the two threaded rods 34 respectively penetrate through the bottom edges of the two installation bases 22, and finally the nut 35 is screwed up, so that the bottom surface of the nut 35 is abutted to the installation bases 22, and the installation work of the supporting wheel 24 is completed.

As shown in fig. 2, the first supporting seat 21 and the lower chute 32 are installed with the adjusting assembly 4, and as shown in fig. 3, the adjusting assembly 4 includes a vertical plate 41, a slot 42, a bolt 43 and a spring 44. The vertical plate 41 is in a rectangular plate shape and is vertically arranged, the vertical plate 41 is installed on one side, away from the outer cylinder 13 (see fig. 1), of the upper surface of the first supporting seat 21, and the lower end of the vertical plate 41 is provided with a guide connecting block 411. The connecting block 411 is a block-shaped structure with a trapezoidal cross section, the upper surface of the connecting block is fixed with the bottom surface of the vertical plate 41, and the area of the bottom surface of the connecting block 411 is smaller than that of the upper surface of the connecting block. The cross section of the inserting groove 42 is rectangular, and the inserting groove is opened at a position on one side of the upper surface of the first supporting seat 21 far away from the outer cylinder 13, so that the lower end of the vertical plate 41 can be inserted, and a rubber sheet 421 is arranged in the inserting groove 42. Rubber sheet 421 is the rectangle slice, its quantity is two, two rubber sheets 421 are fixed with the inside wall of inserting groove 42 both sides respectively, rubber sheet 421 adopts elastic rubber material to make, good elasticity performance has, when riser 41 inserts inserting groove 42 in, lead the inclined plane of connecing piece 411 both sides and take turns into inserting groove 42 earlier in, with this in riser 41 gets into inserting groove 42, through setting up rubber sheet 421, thereby make rubber sheet 421 can fully fill up the gap between riser 41 and the inside wall of inserting groove 42, be favorable to strengthening the stability of being connected between riser 41 and the inserting groove 42. The axis of the bolt 43 is perpendicular to the surface of the riser 41 on the side far away from the outer cylinder 13, the bolt 43 is arranged on the riser 41 in a penetrating way and is in threaded connection with the riser, and the position of one end, close to the outer cylinder 13, of the bolt 43 corresponds to the bottom of the mounting seat 22. The spring 44 is disposed in the lower chute 32, one end of the spring is fixed to the inner side wall of the lower chute 32 on the side away from the vertical plate 41, and the other end of the spring 44 abuts against the side wall of the fixing block 33 on the side away from the vertical plate 41. When the staff sets up multiunit supporting component 2 in urceolus 13 bottom, and find that the wheel face of supporting wheel 24 among the supporting component 2 is difficult to when the arc surface butt in the urceolus 13 outside, the staff only need through adjusting component 4 to the position of supporting wheel 24 finely tune can, in the in-process of adjusting the supporting wheel 24 position, the staff need unscrew nut 35, screw bolt 43 to being close to urceolus 13 one side afterwards, make bolt 43 tip promote mount pad 22 to move to one side that is close to urceolus 13 along first supporting seat 21 upper surface, until when the wheel face of supporting wheel 24 can with the arc surface butt in the urceolus 13 outside, it can to screw nut 35 once more.

As shown in fig. 2, the upper surface of the first support seat 21 is sequentially provided with a first sliding groove 211 and a second sliding groove 212 from top to bottom, the extending direction of the first sliding groove 211 is perpendicular to the extending direction of the upper sliding groove 31, the first sliding groove 211 is communicated with the upper sliding groove 31, and as shown in fig. 3, the diameter of the cross-section circle of the threaded rod 34 is smaller than or equal to the width of the first sliding groove 211, so that the threaded rod 34 slides out of the first sliding groove 211. The extending direction of the second sliding groove 212 is parallel to the extending direction of the first sliding groove 211, the second sliding groove 212 is communicated with the lower sliding groove 32, and the area of the cross section of the second sliding groove 212 is larger than that of the cross section of the fixed block 33, so that the fixed block 33 can slide out of the second sliding groove 212. The iron plates 5 and the magnetic blocks 6 are arranged in the second sliding groove 212, the iron plates 5 are of a vertically arranged rectangular plate-shaped structure, the number of the iron plates 5 is two, the two iron plates 5 are respectively fixed with the inner side walls of the two sides of the second sliding groove 212, and the distance between the two iron plates 5 is larger than or equal to the width of the fixed block 33, so that the fixed block 33 slides out of the second sliding groove 212 between the two iron plates 5. The magnetic block 6 is rectangular, the side walls of the two sides of the magnetic block 6 are respectively attached to the opposite side walls of the two iron plates 5 and attract each other, and the magnetic block 6 is located in the second sliding groove 212 at a position close to the lower sliding groove 32. A handle 61 is fixed on the side wall of the magnetic block 6 far away from the lower chute 32, so that the magnetic block 6 can be conveniently taken out from the second chute 212 by a worker. When the supporting wheel 24 is replaced, a worker only needs to unscrew the screw cap 35 and simultaneously unscrew the bolt 43, so that the position of the fixing block 33 corresponds to that of the second sliding groove 212, then the worker holds the handle 61 and takes down the magnetic block 6, the threaded rod 34 can easily slide out of the first sliding groove 211, and the fixing block 33 slides out of the second sliding groove 212 between the two iron plates 5, so that the worker can conveniently take down the mounting seat 22 on one side of the supporting wheel 24, and the worker can conveniently replace the supporting wheel 24.

As shown in fig. 1, a driving assembly 7 is arranged below the trommel body 1, and the driving assembly 7 includes a second supporting seat 71, a motor 72 and a gear 73. The cross section of the second support seat 71 is rectangular, and is located below the outer cylinder 13, and the bottom surface of the second support seat 71 is located on the ground. The motor 72 is fixed to the second support base 71, and the axis of the output shaft thereof is parallel to the axis of the outer cylinder 13. The axis of the gear 73 is coincident with the axis of the output shaft of the motor 72, the gear 73 is sleeved on the output shaft of the motor 72 and fixed with the output shaft, and the gear 73 is meshed with the gear ring 12. When the roller sand screening machine is required to be used for screening sand, a worker only needs to throw sand into the inner cylinder 14 from one side of the inner cylinder 14 close to the feeding end of the outer cylinder 13, and then the motor 72 is started, the motor 72 drives the gear 73 fixed with the output shaft of the motor to rotate after working, and the gear 73 drives the gear ring 12 meshed with the gear to rotate after rotating, so that the outer cylinder 13 fixed with the gear ring 12 and the inner cylinder 14 fixed with the outer cylinder 13 rotate, and sand in the inner cylinder 14 can be screened conveniently.

The implementation principle of the embodiment is as follows: when the supporting wheel 24 is worn after long-term use, in order to prevent the working strength of the roller sand screening machine from being affected by the worn supporting wheel 24, a worker only needs to loosen the screw cap 35 and simultaneously unscrew the bolt 43, so that the position of the fixing block 33 corresponds to the second sliding groove 212, then the handle 61 is held and the magnetic block 6 is taken down, the threaded rod 34 can be easily slid out from the first sliding groove 211, the fixing block 33 can be easily slid out from the second sliding groove 212 between the two iron plates 5, and therefore the worker can conveniently take down the mounting seat 22 on one side of the supporting wheel 24, the supporting wheel 24 can be conveniently replaced by the worker, the roller sand screening machine is beneficial to keeping the original working strength, and the sand screening efficiency is improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a drum sand screening machine, includes that drum sieve body (1), cover locate on drum sieve body (1) and with it fixed solid fixed ring (11), the cover locate on drum sieve body (1) and with it fixed ring gear (12), be located solid fixed ring (11) below supporting component (2) and be located drum sieve body (1) below and be used for ordering about drum sieve body (1) pivoted drive assembly (7), its characterized in that: supporting component (2) are including first supporting seat (21) that are located trommel body (1) below and being located mount pad (22) that first supporting seat (21) upper surface is close to solid fixed ring (11) terminal surface department, it is fixed through fixed subassembly (3) of detachable between mount pad (22) and first supporting seat (21), mount pad (22) are equipped with two, two mount pad (22) set up about solid fixed ring (11) symmetry, and two rotate between mount pad (22) and install supporting wheel (24) with the outside arc surface butt of solid fixed ring (11).

2. A roller sand screen as claimed in claim 1, wherein: fixed subassembly (3) including set up last spout (31) on first supporting seat (21) upper surface, set up in first supporting seat (21) and with lower spout (32) of last spout (31) intercommunication, install in spout (32) down and with its complex fixed block (33) that slides, locate threaded rod (34) upper end and threaded connection's nut (35) with fixed block (33) upper surface fixed threaded rod (34) and cover, the extending direction of going up spout (31) and the axial direction of supporting wheel (24), the extending direction of spout (32) is parallel with the extending direction of last spout (31) down, threaded rod (34) run through in proper order spout (31) and mount pad (22) edge and with nut (35) threaded connection.

3. A roller sand screen according to claim 2, wherein: an adjusting component (4) used for adjusting the position of the mounting seat (22) is arranged in the first supporting seat (21) and the lower chute (32) together, the adjusting component (4) comprises a vertical plate (41) arranged on the upper surface of the first supporting seat (21) far away from one side of the drum screen body (1), an inserting groove (42) which is arranged on the upper surface of the first supporting seat (21) and is inserted and matched with the lower end of the vertical plate (41), a bolt (43) which is arranged on the vertical plate (41) in a penetrating way and is in threaded connection with the vertical plate, and a spring (44) which is arranged in the lower sliding groove (32), one end of the bolt (43) far away from the head part of the bolt is abutted with the bottom edge of the mounting seat (22), one end of the spring (44) is fixed with the inner side wall of the lower chute (32) far away from one side of the vertical plate (41), the other end of the spring (44) is abutted against the side wall of one side, far away from the vertical plate (41), of the fixed block (33).

4. A roller sand screen according to claim 3, wherein: first support seat (21) upper surface is by last second spout (212) of offering first spout (211) that supply threaded rod (34) roll-off and supply fixed block (33) roll-off down in proper order, first spout (211) and last spout (31) intercommunication, second spout (212) and lower spout (32) intercommunication.

5. A roller sand screen according to claim 4, wherein: iron plates (5) are fixed on the inner side walls of two sides of the second sliding groove (212), a magnetic block (6) is arranged in the second sliding groove (212), the side walls of two sides of the magnetic block (6) are respectively attached to the opposite side walls of the two iron plates (5), and a handle (61) is fixed on the side wall of one side, far away from the lower sliding groove (32), of the magnetic block (6).

6. A roller sand screen according to claim 3, wherein: and rubber sheets (421) made of elastic rubber materials are fixed on the inner side walls of the two sides of the inserting groove (42).

7. A roller sand screen according to claim 6, wherein: the lower end of the vertical plate (41) is fixedly provided with a guide connecting block (411) with a trapezoidal cross section, and the area of the bottom surface of the guide connecting block (411) is smaller than that of the upper surface of the guide connecting block.

8. A roller sand screen as claimed in claim 1, wherein: the driving assembly (7) comprises a second supporting seat (71) positioned below the drum screen body (1), a motor (72) fixed on the second supporting seat (71), and a gear (73) fixed with the end part of an output shaft of the motor (72) and meshed with the gear ring (12).

9. A roller sand screen as claimed in claim 1, wherein: and a chromium coating is arranged on the arc surface of the outer side of the fixing ring (11).