Conveying and screening device for dredged sand

Abstract

The utility model discloses a conveying and screening device for dredged sand, which comprises a shell, a driving mechanism, a feeding mechanism for conveying screened materials and a discharging mechanism for discharging waste materials are arranged in the shell, the feeding mechanism comprises a conveying belt and a filter plate, and the discharging mechanism comprises an eccentric wheel and a material plate. The driving mechanism is used for driving the conveyor belt to operate and driving the eccentric wheel to rotate, a plurality of scrapers are arranged outside the conveyor belt, the conveyor belt pushes dredged sand to move on the filter plate through the scrapers, and the eccentric wheel impacts the filter plate and the material plate through self rotation to trigger vibration. The scraper blade is driven to move through operation of the conveying belt, dredged sand is pushed to move on the filter plate through the scraper blade so as to achieve conveying of the dredged sand, in the process, rotation of the eccentric wheel can continuously impact the filter plate and the material plate so that the filter plate and the material plate can vibrate and shake respectively, the dredged sand can be screened through vibration of the filter plate, and therefore the dredged sand can be screened. And the shaking of the material plate can promote the screened waste materials to be quickly discharged.

Description

Technical Field

[0001] This utility model relates to the field of dredged sand technology, and in particular to a conveying and screening device for dredged sand. Background Technology

[0002] Dredged sand is a sandy material generated during water dredging projects. Its proper disposal and resource utilization are of great significance to project construction, environmental protection and economic benefits.

[0003] The conveying and screening of dredged sand is a key pretreatment step in resource utilization, directly affecting the efficiency of subsequent processing, the quality of finished products, and economic viability. Screening not only removes impurities such as stones, shells, and garbage, preventing them from entering subsequent equipment (such as sand washing machines and crushers) and causing wear or blockage, but also separates the sand into coarse, medium, and fine sand according to particle size to suit different applications.

[0004] A search revealed Chinese utility model patent CN214440786U, which discloses a conveying and screening machine, including a gantry crane, a sand storage bin, a sand screen, and a vibrating device. This device removes large-particle impurities mixed in with the sand by setting a sand screen inside the sand storage bin, preventing them from entering the sand box and affecting the quality of the workpiece. Furthermore, the vibrating device drives the sand screen to vibrate, accelerating the filtration rate of the sand screen and simultaneously shaking off the filtered large-particle impurities. While this application utilizes a gantry crane to convey sand and a vibrating screen to screen it, this device can only convey and screen sand in batches, not continuously. Therefore, the convenience this device brings to the conveying and screening of dredged sand is limited, making it difficult to guarantee the high efficiency of the process. Utility Model Content

[0005] In view of the above-mentioned prior art, the present invention provides a conveying and screening device for dredged sand, and the main technical problem to be solved is how to ensure the efficiency of the conveying and screening process of dredged sand.

[0006] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0007] A conveying and screening device for dredged sand includes a housing, within which a drive mechanism, a feeding mechanism for conveying and screening materials, and a discharge mechanism for discharging waste materials are provided. The feeding mechanism includes a conveyor belt and a filter plate, and the discharge mechanism includes an eccentric wheel and a material plate. The drive mechanism is used to drive the conveyor belt to run and to drive the eccentric wheel to rotate. Several scrapers are provided on the outside of the conveyor belt. The conveyor belt pushes the dredged sand to move on the filter plate through the scrapers. The eccentric wheel impacts the filter plate and the material plate by rotating itself to induce vibration.

[0008] Furthermore, the filter plate is fixedly connected to the middle of the outer casing, and the outer casing has first through holes at both ends on one side below the filter plate. The outer casing is rotatably connected to the same central shaft at the two first through holes.

[0009] Furthermore, the eccentric wheel is connected by a key to the outside of the rod body inside the housing, and the drive mechanism includes a motor, which is fixedly connected to the side wall of the housing. The output shaft of the motor is fixedly connected to one end of the central shaft, and the eccentric wheel is made of rubber.

[0010] Furthermore, a second through hole is provided on one side above the filter plate of the outer shell, and a first roller shaft is rotatably connected to the outer shell at the second through hole. A driven wheel is connected to one end of the first roller shaft outside the outer shell by a key.

[0011] Furthermore, one end of the central shaft is connected to a drive wheel via a key. Both the drive wheel and the driven wheel are belt pulleys, and the same belt is fitted around the outside of both the drive wheel and the driven wheel. The diameter of the drive wheel is smaller than the diameter of the driven wheel.

[0012] Furthermore, a second roller is rotatably connected between the inner walls of both sides of the outer casing on the side away from the first roller. The conveyor belt is sleeved outside the first and second rollers, and several scrapers are fixedly connected to the outside of the conveyor belt at equal intervals.

[0013] Furthermore, the material plate is inclinedly arranged in the space below the filter plate in the outer shell. A telescopic rod is fixedly connected to the inner wall of the bottom end of the outer shell below the high end of the material plate. A spring is sleeved on the outside of the telescopic rod. The high end of the material plate abuts against the top of the telescopic rod, and the low end of the material plate is rotatably connected to the inner wall of the outer shell.

[0014] Furthermore, a first opening is provided on both sides of the outer shell above the filter plate. A feed hopper and a first guide plate are fixedly connected to the two first openings of the outer shell, respectively. A second opening is provided at the bottom of the outer shell near the first guide plate. A second guide plate is fixedly connected to the outer shell at the second opening. The length of the first guide plate is greater than the length of the second guide plate.

[0015] Furthermore, several support legs are fixedly connected at equal intervals on the outer bottom of the outer casing, and several support rollers are rotatably connected at equal intervals between the inner walls of both sides of the outer casing at the inner bottom of the conveyor belt.

[0016] Furthermore, casters are fixedly connected to the bottom of the support legs.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. This application uses the operation of a conveyor belt to drive the scraper to move, and uses the scraper to push the dredged sand to move on the filter plate to realize the conveying of dredged sand. In this process, the rotation of the eccentric wheel can also continuously impact the filter plate and the material plate, so that the two vibrate and shake respectively. The vibration of the filter plate can screen the dredged sand, while the shaking of the material plate can promote the rapid discharge of the screened waste. Therefore, this device can screen the dredged sand while conveying it. Since this device can continuously carry out conveying and screening work without stopping the machine, it can ensure the efficiency of this process.

[0019] 2. By setting a small-diameter driving wheel to drive a large-diameter driven wheel, the first roller shaft can run at a speed lower than that of the central shaft. Therefore, it can not only reduce the moving speed of the scraper to ensure that the dredged sand has sufficient screening time, but also ensure that the eccentric wheel can make the filter plate and the material plate vibrate and shake at a higher frequency to ensure the screening effect of the dredged sand.

[0020] 3. By setting up casters, the device can be moved, and its position can be fixed by using the brakes on the casters after movement, thus making the use of the device more convenient and flexible. Attached Figure Description

[0021] Figure 1 This is a perspective view of a conveying and screening device for dredged sand according to Embodiment 1 of this application;

[0022] Figure 2 This is a cross-sectional view of a conveying and screening device for dredged sand according to Embodiment 1 of this application;

[0023] Figure 3 This is a perspective view of a conveying and screening device for dredged sand according to Embodiment 2 of this application.

[0024] Explanation of icon numbers:

[0025] 1. Outer shell, 2. Feed hopper, 3. First roller shaft, 4. Driven wheel, 5. First guide plate, 6. Second guide plate, 7. Belt, 8. Drive wheel, 9. Central shaft, 10. Support leg, 11. Telescopic rod, 12. Spring, 13. Eccentric wheel, 14. Material plate, 15. Filter plate, 16. Second roller shaft, 17. Support roller, 18. Scraper, 19. Conveyor belt, 20. Universal wheel. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the utility model.

[0027] Example 1

[0028] See attached document Figure 1-2 This application provides a conveying and screening device for dredged sand, including a housing 1. The housing 1 is provided with a drive mechanism, a feeding mechanism for conveying and screening materials, and a discharge mechanism for discharging waste materials. The feeding mechanism includes a conveyor belt 19 and a filter plate 15. The discharge mechanism includes an eccentric wheel 13 and a material plate 14. The drive mechanism is used to drive the conveyor belt 19 to run and drive the eccentric wheel 13 to rotate. Several scrapers 18 are provided on the outside of the conveyor belt 19. The conveyor belt 19 pushes the dredged sand to move on the filter plate 15 through the scrapers 18. The eccentric wheel 13 impacts the filter plate 15 and the material plate 14 by rotating itself to cause vibration.

[0029] Preferably, the outer shell 1 has a first opening on both sides above the filter plate 15. The outer shell 1 is fixedly connected to the feed hopper 2 and the first guide plate 5 at the two first openings respectively. The outer shell 1 has a second opening at the bottom of the side near the first guide plate 5. The outer shell 1 is fixedly connected to the second opening and the second guide plate 6. The length of the first guide plate 5 is greater than the length of the second guide plate 6. The longer first guide plate 5 is used to discharge sand of appropriate particle size, while the shorter second guide plate 6 is used to discharge waste with smaller particle size. The different lengths of the first guide plate 5 and the second guide plate 6 can make the landing points of the sand and waste different. Therefore, by using different containers to receive the materials at the two landing points respectively, the sand and waste can be collected simultaneously and reasonably.

[0030] Preferably, the filter plate 15 is fixedly connected to the middle part of the housing 1. The housing 1 has first through holes at both ends on one side below the filter plate 15. The housing 1 is rotatably connected to the same central shaft 9 at the two first through holes. The distance between the filter plate 15 and the central shaft 9 is equal to the length of the long shaft of the eccentric wheel 13. The bottom end of the filter plate 15 is provided with a friction plate above the eccentric wheel 13. Therefore, when the rubber eccentric wheel 13 hits the friction plate, it can cause the filter plate 15 to vibrate. However, due to the softness of the rubber material, the filter plate 15 will not be hindered from rotating by the friction plate.

[0031] Preferably, a second roller 16 is rotatably connected between the inner walls of the outer casing 1 on the side away from the first roller 3. The conveyor belt 19 is sleeved on the outside of the first roller 3 and the second roller 16. Several scrapers 18 are fixedly connected to the outside of the conveyor belt 19 at equal intervals. When each scraper 18 moves, it can pick up a small part of the material from the feed hopper 2. Therefore, the continuous operation of the conveyor belt 19 will cause each scraper 18 to push the material sequentially and continuously, so as to realize the continuous conveying of the material.

[0032] When using this device, after starting the motor, dredged sand can be fed into the feed hopper 2. The motor can drive the eccentric wheel 13 and the drive wheel 8 to rotate through the central shaft 9. The drive wheel 8 can drive the driven wheel 4 to rotate through the belt 7. The driven wheel 4 drives the first roller shaft 3 to rotate, which, with the cooperation of the second roller shaft 16, makes the conveyor belt 19 drive the scraper 18 to run. Therefore, the dredged sand fed into the feed hopper 2 can be pushed by the moving scraper 18 and moved on the filter plate 15. During this process, the filter plate 15 can screen the dredged sand.

[0033] Preferably, the eccentric wheel 13 is connected by a key to the outside of the rod body inside the housing 1, the central shaft 9 is located on the housing 9, and there are several eccentric wheels 13, which are equidistantly arranged outside the central shaft 9. The drive mechanism includes a motor, which is fixedly connected to the side wall of the housing 1. The output shaft of the motor is fixedly connected to one end of the central shaft 9. A protective housing is provided on the side wall of the housing 1 outside the motor. The material of the eccentric wheel 13 is rubber.

[0034] Preferably, the outer casing 1 has a second through hole on one side above the filter plate 15, and a first roller shaft 3 is rotatably connected to the outer casing 1 at the second through hole. A driven wheel 4 is connected to one end of the first roller shaft 3 outside the outer casing 1 by a key.

[0035] Preferably, one end of the central shaft 9 is connected to a drive wheel 8 via a key. Both the drive wheel 8 and the driven wheel 4 are pulleys. The same belt 7 is fitted around the drive wheel 8 and the driven wheel 4. The diameter of the drive wheel 8 is smaller than that of the driven wheel 4, so the eccentric wheel 13 can run at a higher speed, thereby allowing the filter plate 15 and the material plate 14 to generate higher frequency vibrations or shaking. Meanwhile, the conveyor belt 19 can run at a lower speed, thus relatively prolonging the time that the dredged sand moves on the surface of the filter plate 15, so as to ensure the screening effect of the latter on the former.

[0036] Preferably, the material plate 14 is inclinedly disposed in the space below the filter plate 15 in the outer casing 1. A telescopic rod 11 is fixedly connected to the inner wall of the bottom end of the outer casing 1 below the upper end of the material plate 14. A spring 12 is sleeved on the outside of the telescopic rod 11. The upper end of the material plate 14 abuts against the top end of the telescopic rod 11, and the lower end of the material plate 14 is rotatably connected to the inner wall of the outer casing 1. That is, when the eccentric wheel 13 strikes the material plate 14, it can press it down, and at the same time the spring 12 will contract to continue the energy. When the eccentric wheel 13 separates from the material plate 14, the spring 12 can push the material plate 14 back to its original shape through its own elastic deformation. This repeated action can make the material plate 14 shake, thereby assisting the discharge of the screened material.

[0037] Meanwhile, the rotation of the eccentric wheel 13 can continuously strike the filter plate 15 and the material plate 14, thereby causing them to vibrate and shake. The vibration of the filter plate 15 can enhance the screening effect of the dredged sand and prevent it from being blocked by the dredged sand. The shaking of the material plate 14 under the combined action of the impact of the eccentric wheel 13 and the elastic force of the spring 12 can promote the rapid discharge of the material obtained from screening the dredged sand, thereby achieving the effect of screening the dredged sand during the conveying process.

[0038] Preferably, a number of support legs 10 are fixedly connected at equal intervals on the outer side of the bottom end of the outer casing 1, and a number of support rollers 17 are rotatably connected at equal intervals between the inner walls of the two sides of the outer casing 1 at the inner wall of the bottom end of the conveyor belt 19.

[0039] Example 2

[0040] See attached document Figure 3 This application provides a conveying and screening device for dredged sand. Compared with Embodiment 1, in order to facilitate the flexible movement and use of the device, the bottom end of the support leg 10 is fixedly connected with a caster wheel 20.

[0041] When using this device, the universal wheels 20 can be used to move the device, and the device can be fixed after movement by the brakes on the universal wheels 20, thus allowing the device to be moved and used more flexibly.

[0042] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model shall be determined by the protection scope of the claims.

Claims

1. A conveying and screening device for dredged sand, comprising a housing (1), characterized in that, The outer casing (1) is provided with a drive mechanism, a feeding mechanism for conveying screened materials and a discharge mechanism for discharging waste materials. The feeding mechanism includes a conveyor belt (19) and a filter plate (15). The discharge mechanism includes an eccentric wheel (13) and a material plate (14). The drive mechanism is used to drive the conveyor belt (19) to run and drive the eccentric wheel (13) to rotate. The outside of the conveyor belt (19) is provided with several scrapers (18). The conveyor belt (19) pushes the dredged sand to move on the filter plate (15) through the scrapers (18). The eccentric wheel (13) hits the filter plate (15) and the material plate (14) by rotating itself to cause vibration.

2. The conveying and screening device for dredged sand according to claim 1, characterized in that, The filter plate (15) is fixedly connected to the middle part of the outer shell (1). The outer shell (1) has a first through hole at both ends on one side below the filter plate (15). The outer shell (1) is rotatably connected to the same central shaft (9) at the two first through holes.

3. The conveying and screening device for dredged sand according to claim 2, characterized in that, The eccentric wheel (13) is connected by a key to the outside of the rod body inside the housing (1) of the central shaft (9). The drive mechanism includes a motor, which is fixedly connected to the side wall of the housing (1). The output shaft of the motor is fixedly connected to one end of the central shaft (9). The material of the eccentric wheel (13) is rubber.

4. The conveying and screening device for dredged sand according to claim 3, characterized in that, The outer shell (1) has a second through hole on one side above the filter plate (15). The outer shell (1) is rotatably connected to the second through hole. The first roller shaft (3) is connected to a driven wheel (4) by a key at one end of the first roller shaft (3) outside the outer shell (1).

5. A conveying and screening device for dredged sand according to claim 4, characterized in that, One end of the central shaft (9) is connected to a drive wheel (8) via a key. Both the drive wheel (8) and the driven wheel (4) are belt pulleys. The same belt (7) is fitted around the drive wheel (8) and the driven wheel (4). The diameter of the drive wheel (8) is smaller than the diameter of the driven wheel (4).

6. A conveying and screening device for dredged sand according to claim 5, characterized in that, A second roller shaft (16) is rotatably connected between the inner walls of the outer shell (1) on the side away from the first roller shaft (3). The conveyor belt (19) is sleeved on the outside of the first roller shaft (3) and the second roller shaft (16). Several scrapers (18) are fixedly connected to the outside of the conveyor belt (19) at equal intervals.

7. A conveying and screening device for dredged sand according to claim 6, characterized in that, The material plate (14) is inclinedly arranged in the space below the filter plate (15) in the outer shell (1). A telescopic rod (11) is fixedly connected to the inner wall of the bottom end of the outer shell (1) below the high end of the material plate (14). A spring (12) is sleeved on the outside of the telescopic rod (11). The high end of the material plate (14) abuts against the top end of the telescopic rod (11). The low end of the material plate (14) is rotatably connected to the inner wall of the outer shell (1).

8. A conveying and screening device for dredged sand according to claim 7, characterized in that, The outer shell (1) has a first opening on both sides above the filter plate (15). The outer shell (1) is fixedly connected to the feed hopper (2) and the first guide plate (5) at the two first openings respectively. The outer shell (1) has a second opening at the bottom of the side near the first guide plate (5). The outer shell (1) is fixedly connected to the second opening and the second guide plate (6) is longer than the length of the second guide plate (6).

9. A conveying and screening device for dredged sand according to claim 8, characterized in that, A number of support legs (10) are fixedly connected at equal intervals on the outer side of the bottom end of the outer shell (1), and a number of support rollers (17) are rotatably connected at equal intervals between the inner walls of the two sides of the outer shell (1) at the inner wall of the bottom end of the conveyor belt (19).

10. A conveying and screening device for dredged sand according to claim 9, characterized in that, The bottom end of the support leg (10) is fixedly connected to a caster wheel (20).

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