CN212739602U

CN212739602U - Cleaning mechanism of grit conveyer belt

Info

Publication number: CN212739602U
Application number: CN202021497253.1U
Authority: CN
Inventors: 丁健坚; 刘贾满; 王雄军
Original assignee: Shaoxing Shangyu Nanpuyin Concrete Co ltd
Current assignee: Shaoxing Shangyu Nanpuyin Concrete Co ltd
Priority date: 2020-07-25
Filing date: 2020-07-25
Publication date: 2021-03-19
Anticipated expiration: 2030-07-25

Abstract

The application relates to the field of conveyor belts, in particular to a cleaning mechanism for a sand and stone conveyor belt, which comprises a rack, wherein a driving roller is rotatably mounted on the rack, a conveying motor is arranged on the rack on one side of the driving roller, a rotating shaft of the conveying motor is coaxially and fixedly connected with the driving roller, a driven roller is rotatably mounted at one end of the rack, which is far away from the conveying motor, a conveyor belt is mounted on the driving roller and the driven roller, a rinsing bath is arranged on the rack, and a first steering roller and two second steering rollers are rotatably connected to the rinsing bath; the liquid level of the washing liquid in the washing tank is higher than that of the second steering roller; the inside wall of the rinsing bath is connected with a supporting block, a filtering plate is placed on the supporting block, and a sand and stone collecting device is arranged on the filtering plate. This application passes through the filter with the grit that falls on the conveyer belt and filters, with grit and sewage separation, convenient follow-up reutilization to the grit and the emission of sewage.

Description

Cleaning mechanism of grit conveyer belt

Technical Field

The application relates to the field of conveyer belts, in particular to a cleaning mechanism for a sand and stone conveyer belt.

Background

The cement is one of the most main building materials in the modern, the cement has the characteristics of rich raw materials, low price, simple production process and the like, so the usage amount of the cement shows an increasing trend in recent years, and the characteristics of high compressive strength, good durability, wide strength grade range and the like of concrete prepared from the cement also enable the application range of the cement to be very wide, and the cement is not only widely used in various civil engineering, but also is an important material in the industries of shipbuilding, mechanical industry, geothermal engineering and the like. In cement production, a variety of sand-based materials such as limestone and clay are generally used, and the sand-based materials are generally conveyed by a conveyor belt between the respective steps.

Chinese utility model patent that bulletin number is CN206172408U discloses a grit conveyer with belt cleaning device, including support frame, driving roller and conveyer belt, the driving roller sets up on the support frame, and conveyer belt and transfer roller rotate to be connected, the support frame is equipped with belt cleaning device, belt cleaning device includes brush roller and spray pipe, and brush roller and support frame rotate to be connected, brush roller and conveyer belt contact, the width of spray pipe water spray equals the transverse section width of conveyer belt, is equipped with on the support frame to be used for propping the conveyer belt tight extrusion subassembly, and the sprinkler bead opening props the direction setting of tight conveyer belt towards the extrusion subassembly.

Wherein, a cleaning box used for collecting sewage and sand is arranged on the supporting frame.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: when sewage and sand in the cleaning box are treated, a treatment method of discarding the sewage and sand as waste is often adopted, and the sand is used as one of raw materials of cement and discarded together with the sewage to a certain extent to cause material waste.

SUMMERY OF THE UTILITY MODEL

In order to solve the grit under the clearance from the conveyer belt and fail to obtain the problem of better utilization, this application provides a wiper mechanism of grit conveyer belt.

The application provides a pair of wiper mechanism of grit conveyer belt adopts following technical scheme:

a cleaning mechanism for a sand and stone conveying belt comprises a rack, wherein a driving roller is rotatably mounted on the rack, a conveying motor is arranged on the rack on one side of the driving roller, a rotating shaft of the conveying motor is coaxially and fixedly connected with the driving roller, a driven roller is rotatably mounted at one end, far away from the conveying motor, of the rack, conveying belts are mounted on the driving roller and the driven roller, a water washing tank is arranged on the rack, a first steering roller and two second steering rollers are rotatably connected to the water washing tank, the two second steering rollers are respectively positioned on two sides of the first steering roller, and the conveying belt bypasses the first steering roller and then bypasses the other second steering roller after bypassing one of the second steering rollers; the liquid level of the washing liquid in the washing tank is higher than that of the second steering roller; the inside wall of the rinsing bath is connected with a supporting block, a filtering plate is placed on the supporting block, and a sand and stone collecting device is arranged on the filtering plate.

Through adopting above-mentioned technical scheme, the conveyer belt is through behind the drive roll behind one of them second turn to the roller that is close to the drive roll, through first turn to the roller, again through another second turn to the roller, walk around driven gyro wheel after that. The conveyer belt gets into the wash bowl, and the wash liquor in the wash bowl washs the conveyer belt, reduces the grit of adhesion on the conveyer belt to a certain extent to the grit that falls on the conveyer belt filters through the filter, with grit and sewage separation, makes things convenient for follow-up reutilization and the emission of sewage to the grit.

Preferably, the side wall of the rinsing bath is provided with a lead-out port for leading out gravel, the lead-out port is connected with a collecting box, the gravel collecting device comprises a lead screw and a slide block, the lead screw is connected to the rinsing bath, the slide block is provided with a threaded hole in threaded connection with the lead screw, and the slide block moves the gravel to the lead-out port in the moving process; a limiting rod for preventing the sliding block from rotating along with the lead screw is arranged on the side wall of the rinsing bath; the collecting box is provided with a leading-out motor which drives the lead screw to rotate.

Through adopting above-mentioned technical scheme, when long-pending when staying more grit on the filter, the motor is derived in the drive, drive the lead screw and rotate, the lead screw rotates and drives the slider and slide along lead screw length direction, wherein the gag lever post can prevent effectively that the slider from rotating along with the lead screw, slider initial position is located the filter and keeps away from one side of collecting box, along with the lead screw rotates, the slider removes to the direction that is close to the filter, the grit that stays on with the filter removes to the collecting box in, can prevent effectively that the grit from with the filter screen blocking.

Preferably, the collecting box is provided with a discharge port, the discharge port is connected with a discharge pipe, the discharge pipe is provided with a baffle plate for controlling the discharge pipe to be opened and closed, and the discharge pipe is provided with a switch assembly for driving the baffle plate to rotate.

Through adopting above-mentioned technical scheme, when needs are derived the grit in the collecting box, drive the baffle through switch module and rotate, make discharging pipe and outside intercommunication to can derive the grit.

Preferably, be connected with the installation piece on the discharging pipe, the mounting groove has been seted up on the installation piece, switch module includes worm wheel and worm, worm wheel and worm all set up in the mounting groove, be connected with the dwang on the baffle, the dwang stretches out discharging pipe and the coaxial fixed connection of worm wheel, worm and worm wheel meshing, the worm stretches out the installation piece and is connected with operating handle.

Through adopting above-mentioned technical scheme, when deriving the grit in the collecting box, rotate operating handle and drive the worm and rotate, the worm rotates and drives the worm wheel rotation, and the worm wheel rotates and drives the dwang and rotate, and the dwang rotates and drives the baffle rotation, and the baffle rotation can be with discharging pipe and outside intercommunication to can derive the grit in the collecting box.

Preferably, a scraping roller is rotationally connected in the rinsing bath, a plurality of scraping plates are connected to the scraping roller, the scraping plates are abutted against the conveying surface of the conveying belt, and the highest position of the scraping roller is lower than the liquid level of the rinsing liquid in the rinsing bath; and the rinsing bath is connected with a rotating motor for driving the scraping roller to rotate.

By adopting the technical scheme, when the conveyor belt enters the rinsing bath, the scraper blade on the scraping roller can scrape the high-viscosity clay adhered to the conveyor belt; and the scraping roller highest point is less than the washing liquid level in the wash bowl, makes the scraping roller be located washing liquid level below to can reduce the viscidity between high viscosity clay and the conveyer belt under the effect of washing liquid, make things convenient for the scraper blade to scrape off the high viscosity clay on the conveyer belt, make the conveyer belt keep clean and tidy.

Preferably, the washing tank is rotatably connected with a brush roller, the brush roller is abutted against the conveying surface of the conveying belt, the height of the bottommost end of the brush roller is greater than the liquid level of the washing liquid in the washing tank, and the conveying belt is firstly contacted with the brush roller, then contacted with the washing liquid and then contacted with the scraping roller; the brush roller is provided with a first driving assembly for driving the brush roller to rotate.

Through adopting above-mentioned technical scheme, the brush roller is located washing liquid level top, keeps the brush roller dry relatively, makes things convenient for the low viscidity piece brush on the conveyer belt of brush roller to fall, and the conveyer belt contacts with the scraping roller after earlier with the brush roller contact, makes the low viscidity piece on the conveyer belt earlier by the brush fall, and the rethread scraping roller scrapes high viscidity clay, further guarantees the clean and tidy of conveyer belt.

Preferably, the first driving assembly comprises a first belt pulley, a second belt pulley and a belt, the first belt pulley is coaxially and fixedly connected with the scraping roller, the second belt pulley is coaxially and fixedly connected with the brush roller, and the belt is wound around and tensioned on the first belt pulley and the second belt pulley.

By adopting the technical scheme, when the brush roller is driven to rotate, the drive rotating motor drives the first belt pulley to rotate, the first belt pulley rotates to drive the second belt pulley to rotate through the belt, the second belt pulley rotates to drive the brush roller to rotate, and the first drive assembly enables the drive scraping roller to rotate and the rotating motor to drive the brush roller to rotate.

Preferably, the rinsing bath is rotatably connected with a water absorption roller for absorbing water on the cleaned conveyor belt, and a sponge layer is arranged on the water absorption roller; the washing tank is rotatably connected with a wringing roller which is tightly propped against a sponge layer on the water absorbing roller; and a second driving assembly for driving the wringing roller and the water absorbing roller to rotate is arranged on the rinsing bath.

By adopting the technical scheme, after the conveyor belt is cleaned by the brush roller and the scraping roller, the conveyor belt is abutted against the sponge layer on the water absorbing roller, and the sponge layer absorbs moisture on the conveyor belt to a certain extent so as to reduce residual moisture on the conveyor belt; after the absorbed moisture on the sponge layer is more, the wringing roller and the water absorbing roller are driven to rotate through the second driving assembly, and the moisture on the sponge layer is extruded through the wringing roller, so that the sponge layer can continue to absorb the moisture on the conveyor belt.

Preferably, the second driving assembly comprises a first gear, a second gear and a driving motor, the first gear is coaxially and fixedly connected to the wringing roller, the second gear is coaxially and fixedly connected to the water suction roller, the first gear is meshed with the second gear, and the driving motor is coaxially and fixedly connected with the wringing roller.

Through adopting above-mentioned technical scheme, when drive suction roll and wringing roller rotated, opened driving motor and driven the wringing roller and rotate, drove first gear revolve simultaneously, first gear revolve drive with first gear engagement's second gear revolve, the second gear revolve drives the suction roll and rotates, and the rotation direction of suction roll is opposite with the rotation direction of wringing roller, makes the wringing roller can extrude the moisture on the suction roll sponge layer better.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the conveying belt enters the rinsing bath, rinsing liquid in the rinsing bath cleans the conveying belt, gravels adhered to the conveying belt are reduced to a certain extent, the gravels falling from the conveying belt are filtered by the filter plate, the gravels are separated from sewage, and secondary utilization of the gravels and discharge of the sewage are facilitated;

2. the sand accumulated on the filter plate is moved into the collection box through the lead-out motor and the sand collection device, so that the filter screen can be effectively prevented from being blocked by the sand;

3. when the conveyor belt enters the rinsing bath, the scraper blade on the scraping roller can scrape the high-viscosity clay adhered on the conveyor belt.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a sectional view taken along the length of the wash bowl of FIG. 1, showing the internal structure of the wash bowl;

fig. 3 is a cross-sectional view taken along line a-a of fig. 1, showing the switch assembly and the flapper.

Reference numerals: 1. a frame; 11. a driving roller; 12. a transfer motor; 13. a driven roller; 14. a conveyor belt; 2. a rinsing bath; 21. a first steering roller; 22. a second turning roll; 23. a brush roller; 24. a scraping roller; 25. rotating the motor; 26. a suction roll; 27. a water squeezing roller; 3. a first drive assembly; 31. a first pulley; 32. a second pulley; 33. a belt; 4. a second drive assembly; 41. a first gear; 42. a second gear; 43. a drive motor; 5. a support block; 51. a filter plate; 52. a water inlet pipe; 53. a water outlet pipe; 6. a collection box; 61. a lead-out port; 62. a discharge port; 63. a discharge pipe; 64. mounting blocks; 641. mounting grooves; 7. a sand and stone collecting device; 71. a lead screw; 72. a slider; 73. a limiting rod; 8. a switch assembly; 81. a worm gear; 82. a worm; 9. a baffle plate; 91. rotating the rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses wiper mechanism of grit conveyer belt. Referring to fig. 1, a grit conveyer belt 14 with cleaning function includes frame 1, rotates on frame 1 and is connected with initiative gyro wheel 11, and initiative gyro wheel 11 axis level sets up, fixedly connected with conveyer motor 12 on the frame 1 of initiative gyro wheel 11 one side, and conveyer motor 12's pivot and the coaxial fixed connection of initiative gyro wheel 11.

One end of the frame 1, which is far away from the transmission motor 12, is rotatably connected with a driven roller 13, and the driven roller 13 is arranged in parallel with the axis of the driving roller 11. The driving roller 11 and the driven roller 13 are mounted with a belt 14 tensioned thereon.

Referring to fig. 1 and 2, a washing tank 2 is arranged on a frame 1, the washing tank 2 is placed on the ground, the washing tank 2 is shaped like a cuboid, and washing liquid is filled in the washing tank 2. The washing tub 2 is rotatably connected with a first steering roller 21 and a second steering roller 22, and the two second steering rollers 22 are respectively positioned on both sides of the first steering roller 21. The conveyor belt 14 passes around the driving roller 11, around a second turning roller 22 adjacent to the driving roller 11, around a first turning roller 21, around another second turning roller 22, and around the driven roller 13. And the liquid level of the washing liquid in the washing tank 2 is higher than the topmost end of the second steering roller 22.

The washing tank 2 is rotatably connected with a brush roller 23 and a scraping roller 24, the brush roller 23 is positioned between the scraping roller 24 and the driving roller 11, and the conveying surface of the conveying belt 14 is firstly contacted with the brush roller 23 and then contacted with the scraping roller 24.

The scraping roller 24 is fixedly connected with a plurality of scraping plates, one end of each scraping plate, far away from the scraping roller 24, is abutted against the conveying surface of the conveying belt 14, and the highest position of the scraping roller 24 is lower than the liquid level of the washing liquid in the washing tank 2.

The outer side wall of the rinsing bath 2 is fixedly connected with a rotating motor 25, and an output shaft of the rotating motor 25 is coaxially and fixedly connected with the scraping roller 24.

The first driving assembly 3 which drives the brush roller 23 to rotate is arranged on the brush roller 23, the first driving assembly 3 comprises a first belt pulley 31, a second belt pulley 32 and a belt 33, the first belt pulley 31 is coaxially and fixedly connected with the scraping roller 24, the second belt pulley 32 is coaxially and fixedly connected with the brush roller 23, and the belt 33 bypasses and is tensioned on the first belt pulley 31 and the second belt pulley 32.

A suction roll 26 for absorbing moisture on the cleaned conveyor belt 14 is rotatably connected to the washing tank 2, and the suction roll 26 is positioned on the side of the first steering roll 21 close to the driven roller 13. The water absorption roller 26 is fixedly connected with a sponge layer, and the water absorption roller 26 is positioned above the liquid level of the lotion in the rinsing bath 2.

The rinsing bath 2 is rotatably connected with a wringing roller 27, the wringing roller 27 is tightly propped against the sponge layer on the water absorption roller 26, and the wringing roller 27 is positioned above the liquid level of the rinsing liquid in the rinsing bath 2. The rinsing bath 2 is provided with a second driving assembly 4 for driving the wringing roller 27 and the suction roller 26 to rotate.

The second driving assembly 4 comprises a first gear 41, a second gear 42 and a driving motor 43, wherein the first gear 41 is coaxially and fixedly connected to the wringing roller 27, and the second gear 42 is coaxially and fixedly connected to the suction roller 26. The first gear 41 is engaged with the second gear 42, the driving motor 43 is fixedly connected to the outer side wall of the rinsing bath 2, and the output shaft of the driving motor 43 is coaxially and fixedly connected with the wringing roller 27.

The inside wall of the rinsing bath 2 is fixedly connected with a supporting block 5, and a filter plate 51 is arranged on the supporting block 5.

A water inlet pipe 52 is fixedly connected to the side wall of the rinsing bath 2, the water inlet pipe 52 is communicated with the inside of the rinsing bath 2, and a first valve for controlling the opening and closing of the water inlet pipe 52 is arranged on the water inlet pipe 52. The side wall of the rinsing bath 2 is fixedly connected with a water outlet pipe 53, the highest position of the water outlet pipe 53 is lower than the lowest position of the filter plate 51, the water outlet pipe 53 is communicated with the inside of the rinsing bath 2, and a second valve for controlling the opening and closing of the water outlet pipe 53 is arranged on the water outlet pipe 53. The water inlet pipe 52 and the water outlet pipe 53 are both positioned on the same side of the rinsing bath 2.

The side wall of the side of the rinsing bath 2 far away from the water inlet pipe 52 is provided with a guide outlet 61, the guide outlet 61 is fixedly connected with a collecting box 6, and the bottom of the collecting box 6 is lower than the bottommost end of the guide outlet 61. The sand collecting device 7 is arranged on the filter plate 51, the sand collecting device 7 comprises a lead screw 71 and a slide block 72, the lead screw 71 is rotatably connected to the rinsing bath 2, the lead screw 71 is horizontally arranged, and the length direction of the lead screw 71 is parallel to that of the rinsing bath 2. Threaded holes matched with the lead screw 71 in a threaded mode are formed in the sliding block 72, the length direction of the sliding block 72 is parallel to the width direction of the rinsing bath 2, a limiting rod 73 is fixedly connected to the side wall of the rinsing bath 2, the length direction of the limiting rod 73 is parallel to the length direction of the lead screw 71, and the sliding block 72 slides along the length direction of the lead screw 71.

Referring to fig. 1 and 3, a discharge hole 62 communicated with the inside of the collection box 6 is formed in the bottom surface of the collection box 6, a discharge pipe 63 is fixedly connected to the discharge hole 62, and the discharge pipe 63 is communicated with the inside of the collection box 6 through the discharge hole 62. The discharging pipe 63 is provided with a switch assembly 8 which drives the baffle plate 9 to rotate.

Fixedly connected with installation piece 64 on discharging pipe 63 has seted up mounting groove 641 in the installation piece 64, and switch module 8 includes worm wheel 81 and worm 82, and worm wheel 81 and worm 82 all set up in mounting groove 641, fixedly connected with dwang 91 on the baffle 9, and dwang 91 axial is radially parallel with baffle 9. The rotating rod 91 extends out of the discharging pipe 63 and is coaxially and fixedly connected with the worm wheel 81, the worm 82 is meshed with the worm wheel 81, the worm 82 extends out of the mounting block 64, and one end, extending out of the mounting block 64, of the worm 82 is fixedly connected with an operating handle.

The implementation principle of the wiper mechanism of grit conveyer belt of the embodiment of this application is:

the conveyor belt 14 passes through the drive roller, then passes through one of the second turning rollers 22 adjacent to the drive roller, then passes through the first turning roller 21, then passes through the other second turning roller 22, and then bypasses the driven roller 13.

The conveyor belt 14 contacts the brush roller 23 and then contacts the scraping roller 24, so that low-viscosity debris on the conveyor belt 14 is brushed off by the brush roller, and then high-viscosity clay is scraped off by the scraping roller 24.

After the conveyor belt 14 is cleaned up by the brush roller 23 and the scraping roller 24, the sponge layer butt on the conveyor belt 14 and the water absorbing roller 26 drives the wringing roller 27 and the water absorbing roller 26 to rotate through the second driving assembly 4 after absorbing more moisture on the sponge layer, and the moisture on the sponge layer is extruded through the wringing roller 27.

When the rinsing liquid needs to be added into the rinsing tank 2, the first valve is opened, and the rinsing liquid is introduced from the water inlet pipe 52; when sewage needs to be discharged, the second valve is opened, and the sewage flows out from the water outlet pipe 53 after passing through the filter plate 51.

When more grit is kept in the accumulational on filter 51, the drive is derived the motor, drives lead screw 71 and rotates, and lead screw 71 rotates and drives slider 72 and slide along lead screw 71 length direction, and wherein gag lever post 73 can prevent effectively that slider 72 from rotating along with lead screw 71, and slider 72 initial position is located one side that collection box 6 was kept away from to filter 51, rotates along with lead screw 71, and slider 72 removes to the direction that is close to filter 51, and the grit that keeps on with filter 51 is removed to the collection box 6 in.

When the grit in the collecting box 6 is derived to needs, rotate operating handle and drive worm 82 and rotate, worm 82 rotates and drives worm wheel 81 and rotate, worm wheel 81 rotates and drives dwang 91 and rotate, dwang 91 rotates and drives baffle 9 and rotate, baffle 9 rotates and can communicate discharging pipe 63 with the outside to can derive the grit in the collecting box 6.

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

Claims

1. The utility model provides a wiper mechanism of grit conveyer belt, includes frame (1), rotate in frame (1) and install initiative gyro wheel (11), be provided with conveying motor (12) on frame (1) of initiative gyro wheel (11) one side, the pivot and the coaxial fixed connection of initiative gyro wheel (11) of conveying motor (12), the one end that conveying motor (12) were kept away from in frame (1) is rotated and is installed driven gyro wheel (13), install conveyer belt (14), its characterized in that on initiative gyro wheel (11) and driven gyro wheel (13): a washing tank (2) is arranged on the rack (1), a first steering roller (21) and two second steering rollers (22) are connected to the washing tank (2) in a rotating mode, the two second steering rollers (22) are respectively located on two sides of the first steering roller (21), and the conveyor belt (14) bypasses one of the second steering rollers (22), then bypasses the first steering roller (21), and then bypasses the other second steering roller (22); the liquid level of the washing liquid in the washing tank (2) is higher than that of the second steering roller (22); the inside wall of the rinsing bath (2) is connected with a supporting block (5), a filter plate (51) is placed on the supporting block (5), and a sand and stone collecting device (7) is arranged on the filter plate (51).

2. A cleaning mechanism for a sand conveyor belt according to claim 1, characterised in that: the side wall of the rinsing bath (2) is provided with a guide outlet (61) for guiding sand, the guide outlet (61) is connected with a collecting box (6), the sand collecting device (7) comprises a lead screw (71) and a sliding block (72), the lead screw (71) is connected to the rinsing bath (2), the sliding block (72) is provided with a threaded hole in threaded connection with the lead screw (71), and the sliding block (72) moves the sand to the guide outlet (61) in the moving process; and a limiting rod (73) for preventing the sliding block (72) from rotating along with the lead screw (71) is arranged on the side wall of the rinsing bath (2).

3. A cleaning mechanism for a sand conveyor belt according to claim 2, characterised in that: the collecting box (6) is provided with a discharge hole (62), the discharge hole (62) is connected with a discharge pipe (63), the discharge pipe (63) is provided with a baffle plate (9) for controlling the discharge pipe (63) to be opened and closed, and the discharge pipe (63) is provided with a switch assembly (8) for driving the baffle plate (9) to rotate.

4. A cleaning mechanism for a sand conveyor belt according to claim 3, further comprising: be connected with installation piece (64) on discharging pipe (63), mounting groove (641) have been seted up on installation piece (64), switch module (8) include worm wheel (81) and worm (82), worm wheel (81) all set up in mounting groove (641) with worm (82), be connected with dwang (91) on baffle (9), discharging pipe (63) and the coaxial fixed connection of worm wheel (81) are stretched out in dwang (91), worm (82) and worm wheel (81) meshing, worm (82) stretch out installation piece (64) and are connected with operating handle.

5. A cleaning mechanism for a sand conveyor belt according to claim 1, characterised in that: a scraping roller (24) is rotationally connected in the rinsing bath (2), a plurality of scraping plates are connected to the scraping roller (24), the scraping plates are abutted against the conveying surface of the conveying belt (14), and the highest position of the scraping roller (24) is lower than the liquid level of the rinsing liquid in the rinsing bath (2); the rinsing bath (2) is connected with a rotating motor (25) which drives the scraping roller (24) to rotate.

6. A cleaning mechanism for a sand conveyor belt according to claim 5, characterised in that: the washing tank (2) is rotationally connected with a brush roller (23), the brush roller (23) is abutted against the conveying surface of the conveying belt (14), the height of the bottommost end of the brush roller (23) is larger than the liquid level of washing liquid in the washing tank (2), and the conveying belt (14) is firstly contacted with the brush roller (23), then contacted with the washing liquid and then contacted with the scraping roller (24); the brush roller (23) is provided with a first driving assembly (3) for driving the brush roller (23) to rotate.

7. A cleaning mechanism for a sand conveyor belt according to claim 6, characterised in that: the first driving assembly (3) comprises a first belt pulley (31), a second belt pulley (32) and a belt (33), the first belt pulley (31) is fixedly connected with the scraping roller (24) in a coaxial mode, the second belt pulley (32) is fixedly connected with the brush roller (23) in a coaxial mode, and the belt (33) is wound around and tensioned on the first belt pulley (31) and the second belt pulley (32).

8. A cleaning mechanism for a sand conveyor belt according to claim 5, characterised in that: the washing tank (2) is rotatably connected with a water absorption roller (26) used for absorbing water on the cleaned conveyor belt (14), and a sponge layer is arranged on the water absorption roller (26); the washing tank (2) is rotatably connected with a wringing roller (27), and the wringing roller (27) is tightly propped against the sponge layer on the water absorbing roller (26); and the rinsing bath (2) is provided with a second driving component (4) for driving the wringing roller (27) and the water absorbing roller (26) to rotate.

9. A cleaning mechanism for a sand conveyor belt according to claim 8, further comprising: the second driving assembly (4) comprises a first gear (41), a second gear (42) and a driving motor (43), the first gear (41) is coaxially and fixedly connected to the wringing roller (27), the second gear (42) is coaxially and fixedly connected to the water suction roller (26), the first gear (41) is meshed with the second gear (42), and the driving motor (43) is coaxially and fixedly connected with the wringing roller (27).