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CN-117548218-B - Screening structure and screening method for dredging soil particle separation

CN117548218BCN 117548218 BCN117548218 BCN 117548218BCN-117548218-B

Abstract

The invention discloses a screening structure and a screening method for sorting dredged soil particles, which relate to the technical field of soil particle screening structures and aim to solve the problems that in the prior art, a lot of water pipes are arranged in a soil dump, and flow among soil particles is accelerated through water flow, so that particle grading is improved, however, the method is high in cost and not ideal in practical effect, a first baffle is arranged in a screening pool, a second baffle is arranged on one side of the upper end of the first baffle, a first sorting groove is arranged on one side of the first baffle, a second sorting groove is arranged on the other side of the first baffle, a third baffle is fixedly arranged on one side of the interior of the screening pool, a first granule scraping mechanism is arranged on one side of the third baffle, a second granule scraping mechanism is arranged on one side of the interior of the screening pool, and a third granule scraping mechanism is arranged on one side of the interior of the screening pool, which is close to a feeding groove.

Inventors

  • WANG HENG
  • GUO MIN
  • JIANG SHIJIE
  • CHEN JUNHAO

Assignees

  • 福建工程学院

Dates

Publication Date
20260512
Application Date
20230309

Claims (7)

  1. 1. A screening structure for dredging soil particle sorting comprises a screening pool (1), and is characterized in that one end of the rear side of the screening pool (1) is provided with a feeding groove (2), one end of the front side of the screening pool (1) is provided with a fine-grained soil discharging groove (3), the middle position of one side of the screening pool (1) is provided with a coarse-grained soil discharging groove (4), the inside of the screening pool (1) is provided with a first baffle (14), one side of the upper end of the first baffle (14) is provided with a second baffle (15), one side of the first baffle (14) is provided with a first sorting groove (12), the other side of the first baffle (14) is provided with a second sorting groove (13), one side of the inside of the screening pool (1) is fixedly provided with a third baffle (16), one side of the third baffle (16) is provided with a first granule scraping mechanism (17), two opposite inner walls of the screening pool (1) are provided with a screw rod (35), one side of the inside of the screening pool (1) is close to one end of the groove (2) and is provided with a second granule scraping mechanism (18) which is connected with a first granule scraping mechanism (19) and a second granule scraping mechanism (19) which is connected with the first granule scraping mechanism (19) at one side of the first granule scraping mechanism (19), one side sealing connection of feed chute (2) has inlet pipe (5), the one end sealing connection of inlet pipe (5) has three-way valve (8), the opposite side sealing connection of three-way valve (8) has first play grain pipe (9), pass through dead lever (27) fixed connection between first baffle (14) and second baffle (15), first scraping grain mechanism (17) include scrape grain frame (28), A particle scraping plate (29), a particle scraping plate groove (30), a particle guiding groove (31), a driving rod sleeve (32), a driving rod (33), a particle scraping mechanism driving motor (34), a sliding block (36), a rotating seat (37), a particle guiding groove baffle plate (38), Draw grain groove (39) and magnetic force strip (44), scrape grain board (29) and lie in one side of scraping grain frame (28), the inside of scraping grain frame (28) is provided with scrapes grain board groove (30), the one end of scraping grain board (29) extends to the inside of scraping grain board groove (30), and scrapes grain board (29) and scrapes grain board groove (30) sliding connection, the inside symmetry of scraping grain board groove (30) is provided with two and scrapes grain mechanism electric telescopic cylinder (41) from top to bottom, the one end of scraping grain mechanism electric telescopic cylinder (41) and the inner wall fixed connection of scraping grain board groove (30), the other end and the scraping grain board (29) fixed connection of scraping grain mechanism electric telescopic cylinder (41), driving rod cover (32) are located the opposite side of scraping grain frame (28), the driving rod cover (32) inside of first scraping grain mechanism (17) is provided with driving rod (33), and the upper end and the lower extreme of driving rod cover (33) extend to the outside of driving rod cover (32), first scraping grain mechanism electric telescopic cylinder (41)'s one end and scraping grain mechanism (34) are equipped with driving rod (34) and output key (34) of driving rod (34), the sliding block (36) and the driving rod sleeve (32) of the first granule scraping mechanism (17) are rotationally connected through the rotating seat (37), the driving motor (34) of the granule scraping mechanism is fixedly connected with the lower end of the rotating seat (37), the driving rod sleeve (32) and the sliding block (36) of the second granule scraping mechanism (18) and the third granule scraping mechanism (19) are fixedly connected, the upper end and the lower end of the third baffle (16) are respectively provided with a first granule blocking sleeve (20), one side above the first granule blocking sleeve (20) is fixedly provided with a third baffle fixing hook (40), the lower end of the third baffle fixing hook (40) extends to the inside of the first granule blocking sleeve (20), a baffle electric telescopic cylinder (23) is fixedly arranged below the third baffle fixing hook (40), two first granule blocking sleeves (22) are arranged between the two first granule blocking sleeves (20), the first granule blocking sleeves (22) and the first granule blocking sleeves (20) and the first granule blocking sleeves (22), and the first granule blocking sleeves (21) are respectively arranged between the two granule blocking sleeves (21) An electric telescopic cylinder groove (24) is formed in one side of the inside of the shrinkage block (21) and the first particle blocking sleeve (22), the baffle electric telescopic cylinder (23) is positioned in the electric telescopic cylinder groove (24), the lower end of the baffle electric telescopic cylinder (23) is fixedly connected with the inner wall of the electric telescopic cylinder groove (24) of the first particle blocking sleeve (20) below, a second shrinkage block groove (26) is formed in the first particle blocking sleeve (20), first shrinkage block grooves (25) are symmetrically formed in the upper end and the lower end of the first particle blocking sleeve (22), the upper end of the shrinkage block (21) above is in sliding connection with the second shrinkage block groove (26), and the lower extreme and the second shrink piece groove (26) sliding connection of shrink piece (21) of below, shrink piece (21) and first shrink piece groove (25) sliding connection, scrape the inside of grain frame (28) and guide grain groove (31) front end and seted up and draw grain groove (39), scrape the inside of grain frame (28) and guide grain groove (31) rear end and seted up and lead grain groove (31), and draw grain groove (39) to link up with leading grain groove (31), scrape the rear end of grain frame (28) and guide grain groove (31) and all rotate and be connected with guide grain groove baffle (38), draw the height in grain groove (39) to decrease gradually from the one end of keeping away from guide grain groove (31) to the other end.
  2. 2. The screening structure for dredging soil particle sorting according to claim 1, wherein a first discharging pipe (6) is connected to one side of the fine soil discharging groove (3) in a sealing manner, a second discharging pipe (7) is connected to one side of the coarse soil discharging groove (4) in a sealing manner, a second discharging valve (11) is connected to one end of the first discharging pipe (6) in a sealing manner, and a first discharging valve (10) is connected to one end of the second discharging pipe (7) in a sealing manner.
  3. 3. The screening structure for dredging soil particle sorting according to claim 2, wherein the fixing rods (27) are equidistantly provided with five baffles, and one end of the first baffle (14) and the second baffle (15) close to the fine soil discharging chute (3) is inclined towards the fine soil discharging chute (3).
  4. 4. The screening structure for dredging soil particle sorting according to claim 3, wherein a chute (42) is arranged at the lower end of the other side of the first baffle (14), a magnetic sliding block (43) is slidably arranged in the chute (42), and the second scraping mechanism (18) and the third scraping mechanism (19) comprise a scraping frame (28), a scraping plate (29), a scraping plate groove (30), a guiding groove (31), a driving rod sleeve (32) and a sliding block (36).
  5. 5. The screening structure for dredging soil particle sorting as claimed in claim 4, wherein one end of the particle scraping plate (29) of the first particle scraping mechanism (17) is provided with a magnetic bar (44), the magnetic bar (44) is magnetically connected with a magnetic sliding block (43), and the particle scraping plates (29) of the second particle scraping mechanism (18) and the third particle scraping mechanism (19) are slidably connected with one side of the first baffle (14).
  6. 6. The screening structure for sorting dredged soil particles according to claim 5, wherein the second baffle (15) has an upper end higher than the first baffle (14) and a lower end lower than the first baffle (14).
  7. 7. Screening method based on a screening arrangement for the sorting of dredged soil particles according to claim 6, characterized in that it comprises the following steps: the method comprises the steps of 1, fixedly mounting a screening structure, opening an inflow three-way valve (8), a first discharge valve (10) and a second discharge valve (11), injecting water into the screening pool (1) through a feed pipe (5) according to the volume of dredged soil to be treated until the water level of a first separation groove (12) overflows the height of a first baffle (14), ensuring the water content of slurry of the dredged soil to be 400-800% at the same time, and uniformly flowing the dredged soil to be treated into the first separation groove (12) through the feed pipe (5) and the feed groove (2); In the step 2, in the first sorting tank (12), due to the difference of particle sizes of the dredged soil particles, obvious particle layering phenomenon can occur on the dredged soil particles, so that fine particles and suspended impurities float at the upper part, coarse particles are mainly concentrated at the lower part, during the flowing process of the dredged soil particles, a part of coarse particles flow out from gaps between the first baffle (14) and the second baffle (15) along with the action of water flow, most of fine particle soil and suspended impurities are blocked at the upper part by the second baffle (15), vortex flow is formed near the fine particle soil discharging tank (3) due to the placement of the third baffle (16), and fine particle soil and some suspended impurities are attracted by the action of vortex flow to flow into the fine particle soil discharging tank (3), so that screening is realized.

Description

Screening structure and screening method for dredging soil particle separation Technical Field The invention relates to the technical field of soil particle screening structures, in particular to a screening structure for dredging soil particle sorting and a screening method thereof. Background In order to improve the water quality of lakes and rivers and to improve the navigation and flood discharge capacity of water areas such as rivers and lakes, the underwater bottom mud needs to be dredged, so that a large amount of dredged mud is generated. The water content of the dredged mud is extremely high, and the hydraulic separation phenomenon occurs in the process of blowing the dredged mud into a storage yard, so that the particle size distribution of the dredged mud in the storage yard is uneven, and the physical and mechanical properties of the dredged mud at different positions in the storage yard are different, and soil particles are screened in a laboratory mainly through a screening method. However, the sieving method requires pretreatment such as drying and grinding of the soil sample, and is difficult to sieve soil particles having a particle size of less than 63 μm due to the limited pore size of the sieve. In the prior art, a plurality of fine water pipes are arranged in a dredged soil pile, and the flow among soil particles is accelerated by water flow, so that the particle grading is improved, however, the method is high in cost and not ideal in practical effect, when the water content of the dredged soil slurry is 400-800%, the slurry can be subjected to obvious particle sorting phenomenon, and the mass fraction of coarse particles is gradually increased along the depth, so that a sieving structure and a sieving method for sorting the dredged soil particles are provided, and the problems in the prior art are solved. Disclosure of Invention The present invention aims to provide a screening structure and a screening method for dredging soil particles, which solve the problems that the prior art provides that a lot of water pipes are mostly arranged in a soil dump, and flow among soil particles is accelerated by water flow, so that the particle grading is improved, but the method is high in cost and not ideal in practical effect. In order to achieve the aim, the invention provides the technical scheme that the screening structure for dredging soil particle sorting comprises a screening pool, wherein one end of the rear side of the screening pool is provided with a feed chute, one end of the front side of the screening pool is provided with a fine-grained soil discharge chute, the middle position of one side of the screening pool is provided with a coarse-grained soil discharge chute, the inside of the screening pool is provided with a first baffle, one side of the upper end of the first baffle is provided with a second baffle, one side of the first baffle is provided with a first sorting chute, the other side of the first baffle is provided with a second sorting chute, one side of the inside of the screening pool is fixedly provided with a third baffle, one side of the third baffle is provided with a first granule scraping mechanism, two opposite inner walls of the screening pool are provided with screw rods, one end of one side of the inside of the screening pool, which is close to the feed chute, one end of one side of the inside of the screening pool, which is close to the fine-grained soil discharge chute, is provided with a third granule scraping mechanism, and one end of the second granule scraping mechanism and the third granule scraping mechanism are connected with one side of the first baffle in a sliding mode. Preferably, one side sealing connection of feed chute has the inlet pipe, one side sealing connection of fine grained soil blown down tank has first discharging pipe, one side sealing connection of coarse grained soil blown down tank has the second discharging pipe, the one end sealing connection of inlet pipe has the three-way valve, the opposite side sealing connection of three-way valve has first play grain pipe, the one end sealing connection of first discharging pipe has the second bleeder valve, the one end sealing connection of second bleeder pipe has first bleeder valve. Preferably, the first baffle and the second baffle are fixedly connected through a fixing rod, five fixing rods are arranged at equal intervals, and one ends of the first baffle and the second baffle, which are close to the fine soil discharging groove, incline towards the direction of the fine soil discharging groove. Preferably, the opposite side lower extreme of first baffle is provided with the spout, the inside slip of spout is provided with magnetic force slider, first granule scraping mechanism is including scraping a grain frame, scraping the grain board, scraping a grain board groove, leading a grain groove, actuating lever cover, actuating lever, scraping a grain mechanism driving motor, sliding bl