Discharging equipment and method for reducing dry-method sand making flying dust

Abstract

The invention belongs to the technical field of sand discharging equipment, and particularly relates to discharging equipment and method for reducing dry-method sand-making flying dust, the discharging equipment comprises a conveying device and a conveying belt arranged on the conveying device, a spraying head is arranged on the conveying device, a storage box is arranged below the conveying device, and the spraying head is connected with the storage box. The top of the storage box is open, a sand discharging opening is formed in the storage box, a cleaning roller is rotationally installed in the storage box and attached to the surface of the conveying belt, and a water tank is arranged below the conveying device; an air supply assembly is arranged on the water tank and used for air-drying the conveying belt through air flow, an electric heating wire is arranged in the air supply assembly and used for heating the air flow and water in the water tank, a pneumatic box is arranged at the top end of the water tank, and a top pressing rod used for being driven by steam to slide is arranged in the pneumatic box. And sand on the surface of the conveying belt is swept off, so that the sand conveying efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of sand discharging equipment, and specifically relates to a discharging equipment and method for reducing dust in dry sand making. Background Art

[0002] Dry sand making is a sand and gravel production process that does not require water participation. It mainly processes ores or rocks into finished sand that meets the building sand standards through physical methods such as crushing, screening, and shaping. Compared with traditional wet sand making, dry sand making has the advantages of low water resource consumption, small floor area, and controllable gradation of finished sand. It is especially suitable for areas with water scarcity or severe cold in winter. The discharging equipment is a key link connecting crushing, screening, and finished product storage, and is mainly used to transport the processed finished sand to the storage bin or load it onto a vehicle for external transportation. Common discharging equipment includes vibrating screens, belt conveyors, bucket elevators, screw conveyors, as well as storage bins and loading equipment.

[0003] Since the materials in the dry sand making process are dry, a large amount of dust is easily generated during the discharging process. Therefore, the discharging equipment usually needs to be equipped with efficient dust prevention measures. For example, common spray dust suppression, the principle of which is to spray water mist into the air, so that the water mist particles collide with, adsorb, and settle the dust particles, thereby achieving the purpose of suppressing dust diffusion. Sand has strong water absorption. When the water mist contacts the sand, the sand will absorb water, resulting in an increase in moisture content, and the water will penetrate the sand and fall on the conveyor belt. At this time, it is easier for the sand to adhere to the conveyor belt, thus affecting the discharging quality.

[0004] Therefore, the present invention provides a discharging equipment and method for reducing dust in dry sand making. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0006] The technical solution adopted by the present invention to solve its technical problems is: A discharging equipment for reducing dust in dry sand making according to the present invention includes a conveying device and a conveyor belt provided on the conveying device, and a spray head is provided on the conveying device; A storage box is provided below the conveying device. The top of the storage box is open, a sand discharging port is provided on the storage box, and a cleaning roller is rotatably installed inside the storage box, and the cleaning roller is attached to the surface of the conveyor belt; A water tank is provided below the conveying device; an air supply component is provided on the water tank for air-drying the conveyor belt through air flow; An electric heating wire is provided inside the air supply component for heating the air flow and the water in the water tank; At the top of the water tank, there is a pneumatic box. Inside the pneumatic box, there is a pressing rod that slides driven by steam. At the other end of the pressing rod, there is a control component for controlling the rotation of the cleaning roller through the sliding of the pressing rod.

[0007] The air supply component includes a fan, an air pipe, and a wind expansion box. The fan is arranged on one side of the water tank. One end of the air pipe is fixedly connected to the output end of the fan, and the other end of the air pipe penetrates the water tank and is connected to the wind expansion box. The wind expansion box is located below the conveyor belt, and the heating wire is located inside the air pipe.

[0008] The control component includes a control board, a toothed plate, a transmission gear, a connecting rod, and a limiting component. The control board is fixedly installed at the end of the pressing rod away from the pneumatic box. The connecting rod is fixedly installed on the side wall of the cleaning roller. The transmission gear is arranged on the outer wall of the connecting rod. The toothed plate is fixedly connected to the control board, and the toothed plate meshes with the transmission gear. The limiting component is arranged between the transmission gear and the connecting rod.

[0009] The limiting component includes a ratchet wheel and a ratchet rod. The ratchet wheel is fixedly installed on the outer wall of the connecting rod, and the ratchet rod is elastically installed inside the transmission gear through a torsion spring.

[0010] At the top of the water tank, a receiving box is fixedly installed. The pneumatic box is fixedly installed on the top of the receiving box. A communicating pipe is arranged between the water tank and the receiving box.

[0011] The pneumatic box is provided with a first air hole and a second air hole. The receiving box is provided with a third air hole and a fourth air hole. The first air hole corresponds to the third air hole, and the second air hole corresponds to the fourth air hole.

[0012] A piston is slidably installed inside the pneumatic box. The piston is fixedly connected to the pressing rod. A C-shaped frame is slidably installed inside the receiving box. The receiving box is also provided with an exhaust port.

[0013] A sliding rod is fixedly connected to the side wall of the C-shaped frame. A positioning plate is fixedly installed on the pneumatic box. A first swing block and a second swing block are rotatably installed on the positioning plate. The other ends of the first swing block and the second swing block are both rotatably connected to the sliding rod. A pushing block is fixedly installed on the outer wall of the pressing rod. The pushing block is located between the first swing block and the second swing block.

[0014] A partition box is fixedly installed inside the storage box. The partition box is hollow and provided with a plurality of holes at the bottom. The exhaust port is communicated with the partition box through a diversion pipe. A semiconductor refrigeration sheet is arranged at the bottom of the storage box. The bottom end of the storage box is fixedly connected with a water supply pipe, and the other end of the water supply pipe extends into the inside of the water tank.

[0015] A discharging method for reducing dust emission in dry sand making includes the following steps: S1: First, start the fan to convey the air flow into the air duct, and then heat the air flow through the installed heating wire to assist the air flow in drying the surface of the conveyor belt, reducing the adsorption of water vapor on the sand. S2: Secondly, heat the water in the water tank through the heating wire to produce water vapor, and then drive the piston to reciprocate inside the pneumatic box through the water vapor. At the same time, drive the control board to slide through the top pressure rod, driving the cleaning roller to clean the surface of the conveyor belt. S3: Finally, sweep the sand adhered to the surface of the conveyor belt into the interior of the storage box, and discharge the collected sand through the opened sand discharge port.

[0016] The beneficial effects of the present invention are as follows: 1. For the discharging equipment and method for reducing dry sand making dust emission of the present invention, the water in the water tank is heated through the heating wire to produce water vapor. The reciprocating sliding of the top pressure rod is controlled by the water vapor, driving the control board to slide, controlling the driving of the toothed plate to slide, and with the cooperation of the ratchet rod, enabling the transmission gear to only drive the ratchet wheel to rotate clockwise, controlling the cleaning roller to sweep the sand on the surface of the conveyor belt clockwise, thereby improving the sand conveying efficiency.

[0017] 2. For the discharging equipment and method for reducing dry sand making dust emission of the present invention, start the fan, and with the cooperation of the heating wire, blow hot air below the conveyor belt to dry the moisture on the surface of the conveyor belt, reducing the adhesion of sand on the surface of the conveyor belt. At the same time, the water vapor discharged through the exhaust port will be conveyed into the interior of the partition box through the diversion pipe. At this time, the temperature of the water vapor can heat the top of the partition box, drying the sand swept by the cleaning roller into the storage box, facilitating the discharge through the sand discharge port, and further improving the sand conveying efficiency. Description of the Drawings

[0018] The following further describes the present invention with reference to the drawings.

[0019] Figure 1 is the perspective view of the present invention; Figure 2 is the structural schematic diagram of the water tank of the present invention; Figure 3 is the structural schematic diagram of the air pipe of the present invention; Figure 4 is in the present invention Figure 3 the enlarged view of part A; Figure 5 is in the present invention Figure 3 the enlarged view of part B; Figure 6 is the structural schematic diagram of the partition box of the present invention; Figure 7 is the method flow chart of the present invention.

[0020] In the figure: 1, conveyor belt; 2, water tank; 3, storage box; 4, fan; 5, air pipe; 6, air diffuser box; 7, pneumatic box; 8, top pressure rod; 9, push block; 10, control board; 11, cleaning roller; 12, sand discharge port; 13, slide bar; 14, first swing block; 15, second swing block; 16, piston; 17, first air hole; 18, second air hole; 19, third air hole; 20, fourth air hole; 21, receiving box; 22, C-shaped frame; 23, exhaust port; 24, connecting rod; 25, ratchet; 26, ratchet rod; 27, transmission gear; 28, toothed plate; 29, conveying device; 30, connecting pipe; 31, positioning plate; 32, partition box; 33, hole; 34, semiconductor refrigeration sheet; 35, water supply pipe. Detailed implementation manners

[0021] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0022] As Figures 1 to 6 shown, a discharging device for reducing the dust emission of dry sand making in an embodiment of the present invention includes a conveying device 29 and a conveyor belt 1 arranged on the conveying device 29, and a spray head is arranged on the conveying device 29; the spray head can be used to reduce dust during the process of conveying sand and reduce the flying of dust.

[0023] A storage box 3 is arranged below the conveying device 29. The top of the storage box 3 is open, a sand discharge port 12 is opened on the storage box 3, and a cleaning roller 11 is rotatably installed inside the storage box 3. The cleaning roller 11 is in contact with the surface of the conveyor belt 1; The cleaning roller 11 is arranged below the conveyor belt 1. Therefore, when the conveyor belt 1 is moving, the sand adsorbed on the surface of the conveyor belt 1 by water can be swept off by the rotation of the cleaning roller 11 on the surface of the conveyor belt 1 and collected through the provided storage box 3. At this time, the sand swept off from the conveyor belt 1 can be discharged through the sand discharge port 12 provided on the storage box 3.

[0024] A water tank 2 is arranged below the conveying device 29; an air supply assembly is arranged on the water tank 2 for air-drying the conveyor belt 1 through air flow; By air-drying the lower surface of the conveyor belt 1 through the provided air supply assembly, it can effectively solve the problem that the surface of the conveyor belt 1 is easily wetted by dust reduction of the spray head and is prone to adhering sand, thereby reducing the discharging efficiency of the sand.

[0025] An electric heating wire is arranged in the air supply assembly for heating the air flow and the water in the water tank 2; By the provided electric heating wire, the conveyed air flow can be effectively heated, and by conveying hot air to the surface of the conveyor belt 1, the evaporation of moisture on the surface of the conveyor belt 1 can be accelerated, and further reduce the residual water vapor on the surface of the conveyor belt 1.

[0026] Meanwhile, through the set heating wire, the water in the water tank 2 can be heated until water vapor is produced.

[0027] A pneumatic box 7 is arranged at the top end of the water tank 2. Inside the pneumatic box 7, a top pressure rod 8 for sliding driven by steam is arranged. The other end of the top pressure rod 8 is provided with a control component for controlling the rotation of the cleaning roller 11 through the sliding of the top pressure rod 8.

[0028] The steam produced in the water tank 2 drives the top pressure rod 8 to slide, and then the control component is used to control the cleaning roller 11 to clean the surface of the conveyor belt 1, so that the sand can be swept off.

[0029] As a preferred embodiment of the present invention, the air supply component includes a blower 4, an air pipe 5 and a wind expansion box 6. The blower 4 is arranged on one side of the water tank 2. One end of the air pipe 5 is fixedly connected to the output end of the blower 4. The other end of the air pipe 5 penetrates through the water tank 2 and is connected to the wind expansion box 6. The wind expansion box 6 is located below the conveyor belt 1, and the heating wire is located inside the air pipe 5.

[0030] When the blower 4 is started to convey the air flow through the air pipe 5 into the wind expansion box 6 and finally blow towards the surface of the conveyor belt 1, when the air flow passes through the heating wire, the air flow will be heated. At the same time, the presence of the heating wire will also heat the air pipe 5, and the water in the water tank 2 is heated through heat transfer. The air pipe 5 is preferably a copper pipe.

[0031] As a preferred embodiment of the present invention, the control component includes a control board 10, a toothed plate 28, a transmission gear 27, a connecting rod 24 and a limiting component. The control board 10 is fixedly installed at the end of the top pressure rod 8 away from the pneumatic box 7. The connecting rod 24 is fixedly installed on the side wall of the cleaning roller 11. The transmission gear 27 is arranged on the outer wall of the connecting rod 24. The toothed plate 28 is fixedly connected to the control board 10. The toothed plate 28 meshes with the transmission gear 27. The limiting component is arranged between the transmission gear 27 and the connecting rod 24.

[0032] When the top pressure rod 8 slides towards the storage box 3, it will drive the control board 10 to slide synchronously, and at the same time drive the toothed plate 28 to slide. Due to the meshing of the transmission gear 27 and the toothed plate 28, at this time, the transmission gear 27 will drive the connecting rod 24 to rotate, so that the cleaning roller 11 completes the cleaning of the surface of the conveyor belt 1.

[0033] The rotation direction of the connecting rod 24 can be restricted through the set limiting component. In order to improve the cleaning effect of the cleaning roller 11 on the sand on the surface of the conveyor belt 1, it is necessary to control the cleaning roller 11 to rotate clockwise (since it is arranged at the bottom of the conveyor belt 1, the rotation direction of the cleaning roller 11 needs to be the same as the rotation direction of the conveyor belt 1).

[0034] As a preferred embodiment of the present invention, the limiting component includes a ratchet wheel 25 and a ratchet rod 26. The ratchet wheel 25 is fixedly installed on the outer wall of the connecting rod 24, and the ratchet rod 26 is elastically installed inside the transmission gear 27 through a torsion spring.

[0035] Through the arrangement of the ratchet rod 26, the counterclockwise rotation of the ratchet wheel 25 can be blocked. When the transmission gear 27 rotates, it will also drive the ratchet rod 26 to rotate simultaneously. At the same time, through the arrangement of the ratchet rod 26, when the transmission gear 27 rotates, it can drive the ratchet rod 26 to rotate around the ratchet wheel 25 at the same time. When the transmission gear 27 rotates counterclockwise, the ratchet rod 26 will rotate around the surface of the ratchet wheel 25 at this time. When the transmission gear 27 rotates clockwise, the ratchet rod 26 will drive the ratchet wheel 25 to rotate clockwise at the same time. At this time, the ratchet wheel 25 will drive the connecting rod 24 to rotate, so that the cleaning roller 11 rotates clockwise and sweeps the sand on the surface of the conveyor belt 1, thereby improving the efficiency of sand transportation.

[0036] When the toothed plate 28 slides towards the transmission gear 27, it will drive the transmission gear 27 to rotate counterclockwise. When the toothed plate 28 rotates away from the transmission gear 27, the transmission gear 27 will rotate clockwise at this time.

[0037] As a preferred embodiment of the present invention, a receiving box 21 is fixedly installed at the top of the water tank 2, the pneumatic box 7 is fixedly installed at the top of the receiving box 21, a communicating pipe 30 is provided between the water tank 2 and the receiving box 21, the pneumatic box 7 is provided with a first air hole 17 and a second air hole 18, the receiving box 21 is provided with a third air hole 19 and a fourth air hole 20, the first air hole 17 corresponds to the third air hole 19, and the second air hole 18 corresponds to the fourth air hole 20. A piston 16 is slidably installed inside the pneumatic box 7, the piston 16 is fixedly connected to the pressing rod 8, a C-shaped frame 22 is slidably installed inside the receiving box 21, the receiving box 21 is further provided with an exhaust port 23, a sliding rod 13 is fixedly connected to the side wall of the C-shaped frame 22, a positioning plate 31 is fixedly installed on the pneumatic box 7, a first swing block 14 and a second swing block 15 are rotatably installed on the positioning plate 31, and the other ends of the first swing block 14 and the second swing block 15 are both rotatably connected to the sliding rod 13. A pushing block 9 is fixedly installed on the outer wall of the pressing rod 8, and the pushing block 9 is located between the first swing block 14 and the second swing block 15.

[0038] When water vapor is produced in the water tank 2, the water vapor will enter the interior of the receiving box 21 through the connecting pipe 30. Both ends of the C-shaped frame 22 are in contact with the inner wall of the receiving box 21, and the exhaust port 23 is always located inside the C-shaped frame 22. When the C-shaped frame 22 is below the third air hole 19, the piston 16 will be located near the second air hole 18. At this time, the third air hole 19 is communicated with the exhaust port 23, the fourth air hole 20 will be disconnected from the exhaust port 23 and will not be located inside the C-shaped frame 22. Then the water vapor on the left side of the piston 16 will pass through the first air hole 17 and the third air hole 19 again, and finally be discharged from the exhaust port 23. At the same time, the water vapor entering the interior of the receiving box 21 will enter the interior of the pneumatic box 7 through the fourth air hole 20 and the second air hole 18, and push the piston 16 from the right side to the left side of the piston 16 (the piston 16 is always located between the first air hole 17 and the second air hole 18). At this time, the pressure on the right side of the piston 16 is greater than that on the left side of the piston 16. Therefore, the piston 16 slides towards the direction of the first air hole 17, drives the push block 9 to move simultaneously through the top pressure rod 8, and pushes the first swing block 14, making the first swing block 14 tilt to the left and driving the sliding rod 13 to slide to the right. At this time, the C-shaped frame 22 will move below the fourth air hole 20, making the fourth air hole 20 communicate with the exhaust port 23, and the third air hole 19 be disconnected from the exhaust port 23. The water vapor on the right side of the piston 16 will enter the receiving box 21 through the second air hole 18 and the fourth air hole 20, and finally be discharged from the exhaust port 23.

[0039] By repeating the above actions, the left and right reciprocating sliding of the top pressure rod 8 can be effectively controlled, driving the control plate 10 to slide, driving the toothed plate 28 to slide, and with the cooperation of the ratchet rod 26, the transmission gear 27 can only drive the ratchet wheel 25 to rotate clockwise, controlling the cleaning roller 11 to sweep the sand on the surface of the conveyor belt 1 clockwise, thereby improving the efficiency of sand transportation.

[0040] As a preferred embodiment of the present invention, a partition box 32 is fixedly installed inside the storage box 3. The partition box 32 is hollow and has a plurality of holes 33 opened at the bottom. The exhaust port 23 is communicated with the partition box 32 through a diversion pipe. A semiconductor refrigeration sheet 34 is arranged at the bottom of the storage box 3, and a water supply pipe 35 is fixedly connected to the bottom end of the storage box 3. The other end of the water supply pipe 35 extends into the interior of the water tank 2.

[0041] The cold end of the semiconductor refrigeration sheet 34 faces the bottom of the storage box 3.

[0042] The water vapor discharged through the exhaust port 23 will be transported through the diversion pipe to the inside of the partition box 32. At this time, the temperature of the water vapor can heat the top of the partition box 32. At the same time, the water vapor will also enter the bottom of the storage box 3 through the holes 33 opened at the bottom. Finally, the water vapor entering is cooled by the set semiconductor refrigeration sheet 34 to turn the water vapor into condensed water, and is discharged into the inside of the water tank 2 through the set water delivery pipe 35 for storage.

[0043] As Figure 7 shown, a discharging method for reducing dust in dry sand making, this method uses the above-mentioned discharging equipment for reducing dust in dry sand making, and includes the following steps: S1: First, by starting the fan 4, the air flow is transported into the air pipe 5, and then the air flow is heated by the set heating wire to assist in drying the surface of the conveyor belt 1 and reducing the adsorption of water vapor on the sand; S2: Secondly, the water in the water tank 2 is heated by the heating wire to produce water vapor, and then the water vapor drives the piston 16 to reciprocate inside the pneumatic box 7. At the same time, the control board 10 is driven to slide by the top pressure rod 8 to drive the cleaning roller 11 to clean the surface of the conveyor belt 1; S3: Finally, the sand adhered to the surface of the conveyor belt 1 is swept into the inside of the storage box 3, and the collected sand is discharged through the opened sand discharge port 12.

[0044] Working principle: The water in the water tank 2 is heated by the heating wire to generate water vapor. At this time, the water vapor will enter the inside of the receiving box 21 through the connecting pipe 30. When the C-shaped frame 22 is located below the third air hole 19, the piston 16 will be located near the second air hole 18. At this time, the third air hole 19 is communicated with the exhaust port 23. Then the water vapor on the left side of the piston 16 will pass through the first air hole 17 and the third air hole 19 again, and finally be discharged from the exhaust port 23. At the same time, the water vapor entering the inside of the receiving box 21 will enter the inside of the pneumatic box 7 through the fourth air hole 20 and the second air hole 18, and push the piston 16 from the right side to the left side of the piston 16. At this time, the pressure on the right side of the piston 16 is greater than that on the left side of the piston 16. Therefore, the piston 16 slides towards the first air hole 17, drives the push block 9 to move simultaneously through the top pressure rod 8, and pushes the first swing block 14, making the first swing block 14 tilt to the left and driving the slide rod 13 to slide to the right. At this time, the C-shaped frame 22 will move to below the fourth air hole 20, making the fourth air hole 20 communicate with the exhaust port 23. The water vapor on the right side of the piston 16 will enter the receiving box 21 through the second air hole 18 and the fourth air hole 20, and finally be discharged through the exhaust port 23. By repeating the above actions, the left and right reciprocating sliding of the top pressure rod 8 can be effectively controlled, driving the control board 10 to slide, driving the rack 28 to slide, and with the cooperation of the ratchet rod 26, the transmission gear 27 can only drive the ratchet wheel 25 to rotate clockwise, controlling the cleaning roller 11 to sweep the sand on the surface of the conveyor belt 1 clockwise, thereby improving the sand conveying efficiency.

[0045] Start the fan 4, and cooperate with the heating wire to blow hot air under the conveyor belt 1 to dry the moisture on the surface of the conveyor belt 1 and reduce the adhesion of sand on the surface of the conveyor belt 1. At the same time, the water vapor discharged through the exhaust port 23 will be conveyed to the inside of the partition box 32 through the diversion pipe. At this time, the temperature of the water vapor can heat the top of the partition box 32 to dry the sand swept by the cleaning roller 11 into the storage box 3, which is convenient for discharging from the sand discharge port 12, further improving the sand conveying efficiency.

[0046] The above front, back, left, right, up and down are all based on the Figure 1 in the specification drawings. According to the standard of the observer's perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0047] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A discharge device for reducing dust in dry sand making, comprising a conveying device (29) and a conveyor belt (1) arranged on the conveying device (29), wherein a spray head is arranged on the conveying device (29); Features: A storage box (3) is provided below the conveying device (29), the top of the storage box (3) is open, a sand discharge port (12) is provided on the storage box (3), a cleaning roller (11) is rotatably installed inside the storage box (3), and the cleaning roller (11) is in contact with the surface of the conveyor belt (1); A water tank (2) is provided below the conveying device (29); an air supply component is provided on the water tank (2) for drying the conveyor belt (1) through air flow; The air supply component is provided with an electric heating wire for heating the air flow and the water in the water tank (2); A pneumatic box (7) is arranged at the top end of the water tank (2), a push rod (8) for driving the sliding movement by steam is arranged inside the pneumatic box (7), and a control component is arranged at the other end of the push rod (8) for controlling the rotation of the cleaning roller (11) by sliding the push rod (8).

2. A discharging device for reducing dust in dry sand making according to claim 1, characterized in that: The air supply assembly comprises a fan (4), an air pipe (5) and an air expansion box (6); the fan (4) is arranged on one side of the water tank (2); one end of the air pipe (5) is fixedly connected to the output end of the fan (4); the other end of the air pipe (5) passes through the water tank (2) and is connected to the air expansion box (6); the air expansion box (6) is located below the conveyor belt (1); and the heating wire is located inside the air pipe (5).

3. A discharging device for reducing dust in dry sand making according to claim 2, characterized in that: The control assembly comprises a control panel (10), a tooth plate (28), a transmission gear (27), a connecting rod (24) and a limit assembly. The control panel (10) is fixedly mounted on an end of the push rod (8) away from the pneumatic box (7). The connecting rod (24) is fixedly mounted on a side wall of the cleaning roller (11). The transmission gear (27) is arranged on an outer wall of the connecting rod (24). The tooth plate (28) is fixedly connected to the control panel (10). The tooth plate (28) is meshed with the transmission gear (27). The limit assembly is arranged between the transmission gear (27) and the connecting rod (24).

4. A discharging device for reducing dust in dry sand making according to claim 3, characterized in that: The limiting assembly comprises a ratchet wheel (25) and a ratchet rod (26); the ratchet wheel (25) is fixedly mounted on the outer wall of the connecting rod (24); and the ratchet rod (26) is elastically mounted inside the transmission gear (27) via a torsion spring.

5. The discharging device for reducing dust in dry sand making according to claim 1 is characterized in that: A receiving box (21) is fixedly mounted on the top of the water tank (2), the pneumatic box (7) is fixedly mounted on the top of the receiving box (21), and a connecting pipe (30) is provided between the water tank (2) and the receiving box (21).

6. A discharging device for reducing dust in dry sand making according to claim 5, characterized in that: The pneumatic box (7) is provided with a first air hole (17) and a second air hole (18), and the receiving box (21) is provided with a third air hole (19) and a fourth air hole (20), wherein the first air hole (17) corresponds to the third air hole (19), and the second air hole (18) corresponds to the fourth air hole (20).

7. A discharging device for reducing dust in dry sand making according to claim 6, characterized in that: A piston (16) is slidably mounted inside the pneumatic box (7), and the piston (16) is fixedly connected to the push rod (8). A C-shaped frame (22) is slidably mounted inside the receiving box (21), and an exhaust port (23) is also provided on the receiving box (21).

8. The discharging device for reducing dust in dry sand making according to claim 7 is characterized in that: A sliding rod (13) is fixedly connected to the side wall of the C-shaped frame (22); a positioning plate (31) is fixedly mounted on the pneumatic box (7); a first swing block (14) and a second swing block (15) are rotatably mounted on the positioning plate (31); the other ends of the first swing block (14) and the second swing block (15) are rotatably connected to the sliding rod (13); a pushing block (9) is fixedly mounted on the outer wall of the push rod (8); and the pushing block (9) is located between the first swing block (14) and the second swing block (15).

9. A discharging device for reducing dust in dry sand making according to claim 8, characterized in that: A partition box (32) is fixedly installed inside the storage box (3); the partition box (32) is hollow and has a plurality of holes (33) at the bottom; the exhaust port (23) is connected to the partition box (32) via a guide tube; a semiconductor cooling sheet (34) is provided at the bottom of the storage box (3); a water supply pipe (35) is fixedly connected to the bottom end of the storage box (3); the other end of the water supply pipe (35) extends to the inside of the water tank (2).

10. A method for reducing dust from dry sand making, the method using the discharging device for reducing dust from dry sand making as claimed in claim 9, characterized in that: The following steps are involved: S1: First, the airflow is transported into the air duct by starting the fan, and then the airflow is heated by the set electric heating wire to assist the airflow in drying the surface of the conveyor belt and reduce the absorption of sand by water vapor; S2: Secondly, the water in the water tank is heated by the electric heating wire to produce water vapor, and then the water vapor drives the piston to slide back and forth inside the pneumatic box. At the same time, the control board is driven to slide by the push rod, driving the cleaning roller to clean the surface of the conveyor belt; S3: Finally, the sand adhering to the surface of the conveyor belt is swept into the interior of the storage box, and the collected sand is discharged through the opened sand discharge port.

Images