A sand screening device

Abstract

The utility model discloses a sand screening device relates to sand screening technical field, including screening box, the upper surface fixed connection of screening box has dust removal subassembly, one end fixed connection of screening box has conveying unit, the inside fixed connection of screening box has screening subassembly, screening subassembly includes screening bucket, the both ends fixed connection of screening bucket and the inner wall both ends of screening box, one end surface fixed connection of screening box has drive motor, the output shaft end fixed connection of drive motor has rotary seat no.

Description

Technical Field

[0001] This utility model relates to the field of sand screening technology, specifically to a sand screening device. Background Technology

[0002] In the fields of construction, building materials, and road construction, sand is an important basic raw material, and the uniformity of its particle size directly affects the quality of subsequent products.

[0003] Traditional screening equipment screens are easily clogged by sand particles, which leads to a decrease in screening efficiency, requires frequent shutdowns for cleaning, and affects continuous production. At the same time, the single screening structure has limited effect on pushing and dispersing sand, and some sand may accumulate on the screen surface, further reducing screening uniformity.

[0004] The screening process of sand generates a large amount of dust. Traditional equipment lacks an effective dust removal mechanism. The dust that escapes into the air not only pollutes the working environment but also harms the respiratory system of operators, which does not meet the environmental protection requirements of modern industrial production. Utility Model Content

[0005] The purpose of this invention is to provide a sand screening device to solve the problems of the existing sand screening device mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sand screening device, including a screening box.

[0007] A further improvement of this utility model is that: a dust removal component is fixedly connected to the upper surface of the screening box; a conveying component is fixedly connected to one end of the screening box; a screening component is fixedly connected inside the screening box; the screening component includes a screening barrel; both ends of the screening barrel are fixedly connected to both ends of the inner wall of the screening box; a drive motor is fixedly connected to one end surface of the screening box; a rotating seat is fixedly connected to the output shaft end of the drive motor; a belt is drivenly connected to the surface of the rotating seat; a rotating seat is drivenly connected to the other end of the belt; a rotating shaft is fixedly connected to the inner wall of the rotating seat, extending into the screening barrel; the other end of the rotating shaft is rotatably connected to the upper surface of the inner wall of the screening box; and a spiral blade is fixedly connected to the outer side of the rotating shaft.

[0008] A further improvement of this utility model is that: the inner wall of the rotating seat two has a rotating rod extending into the screening box; the other end of the rotating rod is rotatably connected to the lower surface of the inner wall of the screening box; gear one and gear two are fixedly connected to both ends of the rotating rod respectively; rotating rings are fixedly connected to the outer surfaces of both ends of the screening box; toothed rings are rotatably connected to the outer side of the rotating rings; one side of each gear meshes with the upper part of gear one and gear two at the lower end; a connecting scraper is fixedly connected to the opposite inner wall of the toothed ring; and several scraper heads are fixedly connected to the inner surface of the connecting scraper.

[0009] A further improvement of the present invention is that the dust removal component includes an exhaust fan, an exhaust pipe is fixedly connected to the input end of the exhaust fan, a filter box is fixedly connected to the other end of the exhaust pipe, connecting pipes are fixedly connected to both sides of the filter box, and dust extraction pipes are fixedly connected to the other ends of the connecting pipes. Several suction pipes penetrating to the inner wall of the screening box are fixedly connected to the inner side of the dust extraction pipe, and the several suction pipes are evenly distributed laterally along the dust extraction pipe.

[0010] A further improvement of this utility model is that: a crushing chamber is fixedly connected to the lower surface of one end of the inner wall of the screening barrel, and a feed hopper extending to the upper surface of the screening box is fixedly connected to the upper surface of the other end of the conveying screening barrel. A servo motor is fixedly connected to one side of the crushing chamber, and a rotating shaft is fixedly connected to the output end of the servo motor. A roller shaft is fixedly connected to the outer side of the rotating shaft. A drive gear is fixedly connected to the other end of the rotating shaft extending to the other side of the crushing chamber. A driven gear meshes with one side of the drive gear. A rotating shaft is fixedly connected to the inner side of the driven gear. A roller shaft is fixedly connected to the outer side of the rotating shaft. The other end of the rotating shaft is rotatably connected to the inner wall of the crushing chamber.

[0011] A further improvement of the present invention is that the conveying assembly includes a conveying barrel, a servo motor II is fixedly connected to the upper end of the conveying barrel, a rotating shaft II is fixedly connected to the output shaft end of the servo motor II, the other end of the rotating shaft II is rotatably connected to the lower inner surface of the conveying barrel, a spiral blade II is fixedly connected to the outer outer surface of the rotating shaft II, a feeding plate is fixedly connected to the lower end of the crushing chamber through to one side of the screening box, the other end of the feeding plate is fixedly connected to the lower end of the conveying barrel, and a return pipe extending to the top of the feed hopper is fixedly connected to one side of the upper end of the conveying barrel.

[0012] A further improvement of the present invention is that: the inner wall of the rotating ring is provided with a rotating groove, the inner side of the toothed ring is rotatably connected to the inner wall of the rotating groove, an inclined discharge plate is fixedly connected to the lower part of the screening box near the screening barrel, and a through discharge port is provided on the outer side of the screening box near the inclined discharge plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a drive motor to rotate a rotating shaft and a spiral blade, which can push the sand in the screening barrel to move axially and avoid sand accumulation. At the same time, the rotating rod drives the gear ring to rotate through gear transmission, so that the connecting scraper and elastic scraper head rotate in contact with the inner wall of the screening barrel. This can not only scrape off the attached sand to prevent blockage, but also help disperse the sand and ensure uniform screening. The synergistic effect of the spiral blade and the scraper significantly improves screening efficiency and the consistency of sand particle size.

[0014] 2. This utility model generates negative pressure through an exhaust fan and uses multiple dust suction pipes in the screening box to fully absorb the dust generated during the screening process. After the dust is filtered through the dust suction pipe and the filter box, the dust can be reduced from escaping into the working environment, protecting the health of operators, meeting environmental protection production requirements, and improving the problem of serious dust pollution in traditional equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the rear three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the screening component structure of this utility model; Figure 5 This is a schematic diagram of the conveying component structure of this utility model; Figure 6 This is an enlarged structural diagram of point A of this utility model.

[0016] In the diagram: 1. Screening box; 2. Screening assembly; 201. Drive motor; 202. Rotating seat one; 203. Belt; 204. Rotating seat two; 205. Rotating rod; 206. Gear one; 207. Gear two; 208. Gear ring; 209. Rotating ring; 210. Screening barrel; 211. Rotating shaft one; 212. Spiral blade one; 213. Connecting scraper; 214. Scraper head; 3. Feed hopper; 4. Return pipe; 5. Conveying assembly; 501. Servo motor 2; 502, Conveying barrel; 503, Rotating shaft II; 504, Spiral blade II; 6, Dust removal assembly; 601, Exhaust fan; 602, Exhaust pipe; 603, Filter box; 604, Connecting pipe; 605, Dust extraction pipe; 606, Dust suction pipe; 7, Discharge port; 8, Feeding plate; 9, Inclined discharge plate; 10, Crushing chamber; 11, Servo motor I; 12, Roller shaft I; 13, Roller shaft II; 14, Drive gear; 15, Driven gear; 16, Rotating groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-4 This utility model provides a technical solution: a sand screening device, including a screening box 1, a dust removal component 6 fixedly connected to the upper surface of the screening box 1, a conveying component 5 fixedly connected to one end of the screening box 1, a screening component 2 fixedly connected inside the screening box 1, the screening component 2 including a screening barrel 210, the two ends of the screening barrel 210 fixedly connected to the two ends of the inner wall of the screening box 1, a drive motor 201 fixedly connected to one end surface of the screening box 1, a rotating seat 202 fixedly connected to the output shaft end of the drive motor 201, and a transmission connection on the surface of the rotating seat 202. A belt 203 is provided, with a rotating seat 204 connected to the other end of the belt 203. A rotating shaft 211 extending into the screening chamber 210 is fixedly connected to the inner wall of the rotating seat 202. The other end of the rotating shaft 211 is rotatably connected to the upper surface of the inner wall of the screening chamber 1. A spiral blade 212 is fixedly connected to the outer side of the rotating shaft 211. A rotating rod 205 extending into the screening chamber 1 is located on the inner wall of the rotating seat 204. The other end of the rotating rod 205 is rotatably connected to the lower surface of the inner wall of the screening chamber 1. Gears are fixedly connected to both ends of the rotating rod 205. Gear 206 and gear 207 are fixedly connected to the outer surfaces of both ends of the screening barrel 210. A gear ring 208 is rotatably connected to the outer side of the gear ring 209. One side of each gear meshes with the upper part of gear 206 and gear 207 at the lower end. A connecting scraper 213 is fixedly connected to the opposite surface of the inner wall of the gear ring 208. Several scraper heads 214 are fixedly connected to the inner surface of the connecting scraper 213. When the drive motor 201 starts, the rotating shaft 211 is driven to rotate through the transmission action of rotating seat 202, belt 203, and rotating seat 204. The spiral blade 212 on the rotating shaft 211 rotates accordingly, pushing the sand to move inside the screening barrel 210 for easy screening. When the rotating rod 205 rotates under the drive of the rotating seat 204, the gear 1 206 and the gear 2 207 rotate synchronously. Since the gear ring 208 meshes with the gear 1 206 and the gear 2 207, the gear ring 208 will rotate accordingly, thereby driving the connecting scraper 213 and the scraper head 214 to rotate. The scraper head 214 can clean the screening barrel 210, prevent sand from accumulating and clogging the inner wall of the screening barrel 210, and ensure the smooth progress of the screening work.

[0019] Reference Figure 2The dust removal component 6 includes an exhaust fan 601. An exhaust pipe 602 is fixedly connected to the input end of the exhaust fan 601. A filter box 603 is fixedly connected to the other end of the exhaust pipe 602. Connecting pipes 604 are fixedly connected to both sides of the filter box 603. Dust extraction pipes 605 are fixedly connected to the other ends of the connecting pipes 604. Several suction pipes 606 are fixedly connected to the inner side of the suction pipes 605, penetrating to the inner wall of the screening box 1. The suction pipes 606 are evenly distributed laterally along the suction pipes 605. When the exhaust fan 601 is started, the dust generated in the screening box 1 is sucked in through the suction pipes 606 and enters the filter box 603 through the suction pipes 605 and connecting pipes 604. The filter box 603 filters the dust, and the purified air is discharged, effectively reducing the pollution of the working environment by dust.

[0020] Reference Figures 4-5 A crushing chamber 10 is fixedly connected to the lower surface of one end of the inner wall of the screening barrel 210. A feed hopper 3 extending to the upper surface of the screening box 1 is fixedly connected to the upper surface of the other end of the screening barrel 210. A servo motor 11 is fixedly connected to one side of the crushing chamber 10. A rotating shaft is fixedly connected to the output end of the servo motor 11. A roller shaft 12 is fixedly connected to the outer side of the rotating shaft. A drive gear 14 is fixedly connected to the other side of the crushing chamber 10 at the other end of the rotating shaft. A driven gear meshes with one side of the drive gear 14. The inner side of the driven gear 15 is fixedly connected to the rotating shaft, and the outer side of the rotating shaft is fixedly connected to the roller shaft 13. The other end of the rotating shaft is rotatably connected to the inner wall of the crushing chamber 10. When the motor starts, it drives the roller shaft 12 to rotate. At the same time, through the meshing transmission of the driving gear 14 and the driven gear 15, it drives the roller shaft 13 to rotate in the opposite direction. The cooperation between the roller shaft 12 and the roller shaft 13 can squeeze and crush the larger sand particles entering the crushing chamber 10, which is convenient for subsequent screening.

[0021] Reference Figures 5-6The conveying assembly 5 includes a conveying barrel 502. A servo motor 501 is fixedly connected to the upper end of the conveying barrel 502. A rotating shaft 503 is fixedly connected to the output shaft end of the servo motor 501. The other end of the rotating shaft 503 is rotatably connected to the lower inner surface of the conveying barrel 502. A spiral blade 504 is fixedly connected to the outer outer surface of the rotating shaft 503. A feeding plate 8 is fixedly connected to one side of the crushing chamber 10, extending through to the screening box 1. The other end of the feeding plate 8 is fixedly connected to the lower end of the conveying barrel 502. A return pipe 4 extending above the feed hopper 3 is fixedly connected to one side of the upper end of the conveying barrel 502. A rotating groove 16 is opened on the inner wall of the rotating ring 209. The inner side of the toothed ring 208 is rotatably connected to the inner wall of the rotating groove 16. The inside of the screening box 1 is close to the screen. An inclined discharge plate 9 is fixedly connected to the bottom of the dividing tank 210. The screening box 1 has a through discharge port 7 on the outer side near the inclined discharge plate 9. After crushing and screening, the sand that does not meet the requirements enters the conveying tank 502 through the discharge plate 8. The servo motor 501 is started, driving the rotating shaft 503 and the spiral blade 504 to rotate. The spiral blade 504 pushes the sand upward and conveys it back to the feed hopper 3 through the return pipe 4, realizing the circulation screening of sand and improving the screening quality of sand. The inner side of the toothed ring 208 rotates on the inner wall of the rotating groove 16, ensuring that the toothed ring 208 can rotate stably around the rotating ring 209. After screening, the sand that meets the requirements falls on the inclined discharge plate 9 and is discharged through the discharge port 7 under the action of gravity, completing the sand screening process.

[0022] The working principle and usage process of this utility model are as follows: After the sand to be screened enters the screening barrel 210 from the feed hopper 3, the drive motor 201 starts, and through the transmission action of the rotating seat 1 202, belt 203 and rotating seat 204, the rotating shaft 1 211 is driven to rotate. The spiral blade 212 on the outside of the rotating shaft 1 211 rotates accordingly, pushing the sand to move towards the crushing chamber 10 in the screening barrel 210. During the movement, the sand that meets the particle size requirements falls through the screen holes of the screening barrel 210 and lands on the inclined discharge plate 9 inside the screening box 1. Under the action of gravity, it is discharged through the through discharge port 7 on the outside of the screening box 1. At the same time, the rotating seat 204 drives the rotating rod 20 5. Rotation causes gears 206 and 207 at both ends of the rotating rod 205 to rotate synchronously. Since the gear rings 208 on the outer rotating rings 209 at both ends of the screening barrel 210 mesh with gears 206 and 207, the gear rings 208 will rotate around the rotating rings 209. The inner side of the gear rings 208 rotates within the rotating grooves 16 on the inner wall of the rotating rings 209, ensuring stable rotation. The connecting scraper 213 and several scraper heads 214 connected to the inner wall of the gear rings 208 also rotate, cleaning the screening barrel 210 to prevent sand accumulation and clogging of the screen holes, ensuring smooth screening. Dust generated during the screening process will be treated by the dust removal component 6, and the exhaust fan 601 will start. Then, a negative pressure is created in the filter box 603 through the exhaust pipe 602. The dust extraction pipe 605 connected to the connecting pipes 604 on both sides of the filter box 603 generates suction. Several suction pipes 606 inside the dust extraction pipe 605 suck in the dust in the screening box 1. The dust enters the filter box 603 through the dust extraction pipe 605 and the connecting pipe 604. After filtration, the purified air is discharged, reducing pollution to the working environment. Large sand particles that do not pass through the sieve holes in the screening barrel 210 are pushed to the crushing chamber 10 on the lower surface of one end of the inner wall. The servo motor 11 on one side of the crushing chamber 10 starts, driving the rotating shaft at its output end to rotate. The roller shaft 12 on the outside of the rotating shaft rotates accordingly. At the same time, the active gear at the other end of the rotating shaft... Wheel 14 drives the meshing driven gear 15 to rotate. The rotating shaft inside the driven gear 15 drives the roller shaft 13 to rotate in the opposite direction. The roller shaft 12 and roller shaft 13 cooperate to squeeze and crush the large sand particles entering the crushing chamber 10, which facilitates subsequent screening. The crushed sand is discharged from the lower end of the crushing chamber 10 and enters the conveying bucket 502 of the conveying assembly 5 through the feeding plate 8. The servo motor 501 at the upper end of the conveying bucket 502 is started, which drives the rotating shaft 503 to rotate. The spiral blade 504 on the outer side of the rotating shaft 503 pushes the sand upward. The sand is conveyed back to the feed hopper 3 through the return pipe 4 on one side of the upper end of the conveying bucket 502, realizing the circulation screening of sand and improving the screening quality.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sand screening device, comprising a screening box (1), characterized in that: A dust removal assembly (6) is fixedly connected to the upper surface of the screening box (1). A conveying assembly (5) is fixedly connected to one end of the screening box (1). A screening assembly (2) is fixedly connected inside the screening box (1). The screening assembly (2) includes a screening barrel (210). Both ends of the screening barrel (210) are fixedly connected to the two ends of the inner wall of the screening box (1). A drive motor (201) is fixedly connected to one end surface of the screening box (1). The output shaft end of the drive motor (201) is fixedly connected to... There is a rotating seat (202), and a belt (203) is connected to the surface of the rotating seat (202). The other end of the belt (203) is connected to a rotating seat (204). A rotating shaft (211) extending into the screening barrel (210) is fixedly connected to the inner wall of the rotating seat (202). The other end of the rotating shaft (211) is rotatably connected to the upper surface of the inner wall of the screening box (1). A spiral blade (212) is fixedly connected to the outer side of the rotating shaft (211).

2. The sand screening device according to claim 1, characterized in that: The inner wall of the rotating seat (204) has a rotating rod (205) extending into the screening box (1). The other end of the rotating rod (205) is rotatably connected to the lower surface of the inner wall of the screening box (1). Gear 1 (206) and gear 2 (207) are fixedly connected to both ends of the rotating rod (205). Rotating rings (209) are fixedly connected to the outer surfaces of both ends of the screening barrel (210). A toothed ring (208) is rotatably connected to the outer side of the rotating ring (209). One side of the gear meshes with the upper part of gear 1 (206) and gear 2 (207) at the lower end. A connecting scraper (213) is fixedly connected to the opposite surface of the inner wall of the toothed ring (208). Several scraper heads (214) are fixedly connected to the inner surface of the connecting scraper (213).

3. The sand screening device according to claim 1, characterized in that: The dust removal component (6) includes an exhaust fan (601), an exhaust pipe (602) is fixedly connected to the input end of the exhaust fan (601), a filter box (603) is fixedly connected to the other end of the exhaust pipe (602), a connecting pipe (604) is fixedly connected to both sides of the filter box (603), a dust extraction pipe (605) is fixedly connected to the other end of the connecting pipe (604), and a plurality of dust suction pipes (606) are fixedly connected to the inner side of the dust extraction pipe (605) and penetrate to the inner wall of the screening box (1), and the plurality of dust suction pipes (606) are evenly distributed laterally along the dust extraction pipe (605).

4. The sand screening device according to claim 1, characterized in that: The inner wall of the screening barrel (210) is fixedly connected to a crushing chamber (10) on one lower surface. The upper surface of the other end of the conveying screening barrel (210) is fixedly connected to a feed hopper (3) extending to the upper surface of the screening box (1). A servo motor (11) is fixedly connected to one side of the crushing chamber (10). A rotating shaft is fixedly connected to the output end of the servo motor (11). A roller shaft (12) is fixedly connected to the outer side of the rotating shaft. A drive gear (14) is fixedly connected to the other side of the crushing chamber (10) at the other end of the rotating shaft. A driven gear (15) meshes with one side of the drive gear (14). A rotating shaft is fixedly connected to the inner side of the driven gear (15). A roller shaft (13) is fixedly connected to the outer side of the rotating shaft. The other end of the rotating shaft is rotatably connected to the inner wall of the crushing chamber (10).

5. A sand screening device according to claim 4, characterized in that: The conveying assembly (5) includes a conveying barrel (502), a servo motor (501) is fixedly connected to the upper end of the conveying barrel (502), a rotating shaft (503) is fixedly connected to the output shaft end of the servo motor (501), the other end of the rotating shaft (503) is rotatably connected to the lower inner surface of the conveying barrel (502), a spiral blade (504) is fixedly connected to the outer surface of the rotating shaft (503), a feeding plate (8) is fixedly connected to the lower end of the crushing chamber (10) through to one side of the screening box (1), the other end of the feeding plate (8) is fixedly connected to the lower end of the conveying barrel (502), and a return pipe (4) extending to the top of the feed hopper (3) is fixedly connected to one side of the upper end of the conveying barrel (502).

6. A sand screening device according to claim 2, characterized in that: The inner wall of the rotating ring (209) is provided with a rotating groove (16), and the inner side of the toothed ring (208) is rotatably connected to the inner wall of the rotating groove (16). An inclined discharge plate (9) is fixedly connected to the bottom of the screening box (1) near the screening barrel (210), and a through discharge port (7) is provided on the outer side of the screening box (1) near the inclined discharge plate (9).

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