Fine sand screening equipment

Abstract

The utility model discloses fine sand screening equipment which comprises a frame body, two strip-shaped grooves are formed in the outer wall of the frame body, two bearings are connected to the inner walls of the two strip-shaped grooves in a sliding mode, connecting columns are fixedly connected to inner rings of the four bearings, one ends of the four connecting columns are fixedly connected with the same outer frame, an inner frame is hinged to the top of the outer frame, and the inner frame is hinged to the top of the inner frame. The inner wall of the inner frame is fixedly connected with a screening net, the outer wall of the inner frame is hinged to two L-shaped pieces, the outer wall of the outer frame is fixedly connected with a U-shaped piece, the outer wall of the U-shaped piece is fixedly connected with a pin shaft, the outer wall of the pin shaft is rotationally sleeved with a connecting rod, and the outer wall of the frame body is fixedly connected with a connecting plate. By arranging the U-shaped piece, the connecting rod, the connecting plate, the protective frame, the motor, the disc and the T-shaped column, the screening net moves in a reciprocating mode, fine sand is screened, vertical vibration is not needed, and impurities are prevented from blocking screening holes more easily.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a fine sand screening device. Background Technique

[0002] In construction engineering, screening fine sand is to improve the quality and safety of concrete. Fine sand plays an important role in concrete production. However, if it is not screened, the fine sand may contain too many impurities, which will have a negative impact on the quality of concrete.

[0003] After retrieval, the patent document with the publication number of CN219723695U discloses a sand screening device for construction engineering. By setting the combined use of a driving motor, gears, racks, a top plate, a sieve plate, side grooves, connecting springs and a collection box, it can drive the sieve plate to move up and down cyclically in the side grooves, and make the sieve plate vibrate through the connecting springs, avoiding the phenomenon of sand clogging the sieve plate and improving the screening efficiency and quality of sand.

[0004] When the above-mentioned screening device is actually used, it vibrates by moving up and down cyclically in cooperation with the spring to screen the fine sand. After screening, the impurities in the fine sand accumulate on the sieve plate, and the impurities are more likely to clog the sieve holes during the up and down process, and need to be processed in time to continue screening the fine sand, preventing the increase of work difficulty and the reduction of screening efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to solve the defects existing in the prior art, and to propose a fine sand screening device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A fine sand screening device includes a frame body. Two strip-shaped grooves are opened on the outer wall of the frame body. Two bearings are slidably connected to the inner walls of the two strip-shaped grooves. The inner rings of the four bearings are fixedly connected with connecting columns. One end of the four connecting columns is fixedly connected with the same outer frame. The top of the outer frame is hinged with an inner frame. A screening net is fixedly connected to the inner wall of the inner frame. Two L-shaped parts are hinged to the outer wall of the inner frame. A U-shaped part is fixedly connected to the outer wall of the outer frame. A pin shaft is fixedly connected to the outer wall of the U-shaped part. A connecting rod is rotatably sleeved on the outer wall of the pin shaft. A connecting plate is fixedly connected to the outer wall of the frame body. A protective frame is fixedly connected to the top of the connecting plate. A driving mechanism is arranged on the top of the connecting plate. A dust removal mechanism is arranged on the top of the frame body.

[0008] Preferably, the driving mechanism includes a motor, the interior of the protective frame is fixedly connected to the outer wall of the motor, the outer wall of the output shaft of the motor is fixedly sleeved with a disc, the outer wall of the disc is fixedly connected with a T-shaped column, and a through hole is formed in the outer wall of the connecting rod. The inner wall of the through hole is rotatably connected to the outer wall of the T-shaped column. By setting the driving mechanism to drive the U-shaped member and the outer frame to perform reciprocating linear movement, a left-right screening process is formed. The fine sand rolls on the screening net and falls downward through multiple sieve holes.

[0009] Preferably, the dust removal mechanism includes a U-shaped plate with a hollow structure. The top of the frame body is fixedly connected to both ends of the U-shaped plate. The top of the U-shaped plate is fixedly and communicatively connected with an air extraction pipe. One end of the air extraction pipe is fixedly and communicatively connected with a dust removal fan. A plurality of dust suction nozzles are uniformly fixedly and communicatively connected to the outer wall of the U-shaped plate. By setting the dust removal mechanism, the dust in the screening process is filtered.

[0010] Preferably, four supporting feet are fixedly connected to the bottom of the frame body. By setting the four supporting feet, the frame body is supported.

[0011] Preferably, a handle is fixedly connected to the outer wall of the inner frame. By setting the handle, the inner frame is driven to rotate around the top of the outer frame, so that the screening net is inclined.

[0012] Preferably, both L-shaped members are in mutual contact with the outer frame. Threaded holes are formed in the outer walls of both L-shaped members. Bolts are threadedly connected to the inner walls of the two threaded holes. One end of the bolt presses against the outer wall of the outer frame, so that the L-shaped member is fixed to the outer frame by the pressing force, and thus the inner frame is fixed within the outer frame.

[0013] Preferably, a circular hole is formed in the outer wall of the protective frame. The inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the motor.

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] In this solution, by setting the U-shaped member, the connecting rod, the connecting plate, the protective frame, the motor, the disc and the T-shaped column, the screening net performs reciprocating movement to screen the fine sand, and there is no need to adopt the up-and-down vibration method to avoid impurities more easily blocking the sieve holes;

[0016] By setting the connecting column, the bearing, the outer frame, the inner frame, the screening net, the handle and the L-shaped member, the inner frame is driven to rotate outward by the handle to throw out the impurities on the screening net, so that a detachable process is formed between the inner frame and the outer frame, and at the same time, it is convenient to clean the impurities on the screening net. Description of the Drawings

[0017] To more clearly illustrate the technical solution of the present utility model, the following will briefly introduce the drawings required for use in the description of the specific embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Schematic diagram of the three-dimensional structure of a fine sand screening device proposed by the present utility model;

[0019] Figure 2 Schematic diagram of the sectional structure of a fine sand screening device proposed by the present utility model;

[0020] Figure 3 Schematic diagram of the partial sectional structure of a fine sand screening device proposed by the present utility model.

[0021] In the figure: 1, frame body; 2, support feet; 3, connecting columns; 4, bearings; 5, outer frame; 6, inner frame; 7, screening net; 8, handle; 9, L-shaped part; 10, U-shaped part; 11, connecting rod; 12, connecting plate; 13, protective frame; 14, motor; 15, disc; 16, T-shaped column; 17, U-shaped plate; 18, exhaust pipe; 19, dust suction round nozzle. Specific embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than 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 efforts belong to the scope of protection of the present utility model.

[0023] As Figures 1-3 shown, it relates to a fine sand screening device, including a frame body 1. Four support feet 2 are fixedly connected to the bottom of the frame body 1. Two strip-shaped grooves are opened on the outer wall of the frame body 1. Two bearings 4 are slidably connected to the inner walls of the two strip-shaped grooves. The inner rings of the four bearings 4 are fixedly connected with connecting columns 3. One end of the four connecting columns 3 is fixedly connected to the same outer frame 5. When the outer frame 5 moves linearly, it drives the four connecting columns 3 and the four bearings 4 to move. When the bearings 4 roll in the strip-shaped grooves, the internal rollers reduce the friction force, which is beneficial to the linear movement of the outer frame 5.

[0024] The top of the outer frame 5 is hinged with an inner frame 6. The inner wall of the inner frame 6 is fixedly connected with a screening net 7. The screening net 7 moves linearly back and forth to screen the fine sand, and the impurities stay on the screening net 7. The outer wall of the inner frame 6 is fixedly connected with a handle 8. The handle 8 drives the inner frame 6 to rotate around the top of the outer frame 5. The outer wall of the inner frame 6 is hinged with two L-shaped parts 9. Both of the two L-shaped parts 9 are in contact with the outer frame 5. Threaded holes are formed in the outer walls of the two L-shaped parts 9, and bolts are threadedly connected to the inner walls of the two threaded holes. The inner frame 6 is fixed to the outer frame 5 by the two bolts.

[0025] The outer wall of the outer frame 5 is fixedly connected with a U-shaped part 10. The outer wall of the U-shaped part 10 is fixedly connected with a pin shaft. A connecting rod 11 is rotatably sleeved on the outer wall of the pin shaft. The two ends of the connecting rod 11 are respectively rotated with the U-shaped part 10 and the T-shaped column 16. Therefore, when the disc 15 rotates, the movement track of the connecting rod 11 is an arc, and a reciprocating movement process is formed. The outer wall of the frame body 1 is fixedly connected with a connecting plate 12. The top of the connecting plate 12 is fixedly connected with a protective frame 13.

[0026] A driving mechanism is arranged on the top of the connecting plate 12. The driving mechanism includes a motor 14. The protective frame 13 protects the motor 14. The inside of the protective frame 13 is fixedly connected with the outer wall of the motor 14. A round hole is formed in the outer wall of the protective frame 13, and the inner wall of the round hole is rotatably connected with the outer wall of the output shaft of the motor 14. A disc 15 is fixedly sleeved on the outer wall of the output shaft of the motor 14. A T-shaped column 16 is fixedly connected to the outer wall of the disc 15. The motor 14 drives the disc 15 to rotate, so that the T-shaped column 16 forms a circular motion. A through hole is formed in the outer wall of the connecting rod 11, and the inner wall of the through hole is rotatably connected with the outer wall of the T-shaped column 16. One end of the connecting rod 11 is connected with the T-shaped column 16 through the through hole.

[0027] A dust removal mechanism is arranged on the top of the frame body 1. The dust removal mechanism includes a U-shaped plate 17 with a hollow structure. The top of the frame body 1 is fixedly connected with both ends of the U-shaped plate 17. The top of the U-shaped plate 17 is fixedly communicated with an air extraction pipe 18. One end of the air extraction pipe 18 is fixedly communicated with a dust removal fan. A plurality of dust suction nozzles 19 are uniformly and fixedly communicated with the outer wall of the U-shaped plate 17. When the dust removal fan (Y6-51-11D) operates, an air intake process is generated at the input end, and the dust generated during the screening process is sucked in through the air extraction pipe 18 and the plurality of dust suction nozzles 19.

[0028] Working principle: During use, place an existing manual tipping cart or other transportation equipment under the frame 1. Put fine sand into the screening mesh 7 inside the inner frame 6 in batches through the existing transportation equipment. The motor 14 runs in advance to drive the disc 15 to rotate. The rotation of the disc 15 drives the T-shaped column 16 to perform circular motion. The circular motion of the T-shaped column 16 drives the connecting rod 11 to cooperate with the U-shaped part 10 to perform reciprocating rotation. The reciprocating rotation of the connecting rod 11 drives the U-shaped part 10 and the outer frame 5 to perform reciprocating movement. The outer frame 5 maintains linear movement in two strip-shaped grooves through four connecting columns 3 and four bearings 4. The reciprocating movement of the outer frame 5 drives the inner frame 6 and the screening mesh 7 to perform reciprocating movement to screen the fine sand. During this process, the intake process is generated at the input end of the dust removal fan. Dust generated during the screening process is sucked in through the suction pipe 18 and multiple dust suction nozzles 19, and is filtered through the filter bag in the dust removal fan, and finally discharged from the output end of the dust removal fan; The screened fine sand is collected through a manual tipping cart or other transportation equipment, and the impurities stay on the top of the screening mesh 7. When cleaning is required, rotate the bolts on the two L-shaped parts 9. The bolts no longer press against the outer wall of the outer frame 5, releasing the position fixation of the inner frame 6. Drive the inner frame 6 to rotate outward through the handle 8 to tilt the inner frame 6 and throw out the impurities on the screening mesh 7 to complete the cleaning process.

[0029] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific implementation manners. Obviously, many modifications and changes can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A fine sand screening device, comprising a frame body (1), characterized in that, Two strip-shaped grooves are formed in the outer wall of the frame body (1), and two bearings (4) are slidably connected to the inner walls of the two strip-shaped grooves. The inner rings of the four bearings (4) are fixedly connected with connecting columns (3), and one ends of the four connecting columns (3) are fixedly connected with the same outer frame (5). The top of the outer frame (5) is hinged with an inner frame (6), a screening net (7) is fixedly connected to the inner wall of the inner frame (6), two L-shaped members (9) are hinged to the outer wall of the inner frame (6), a U-shaped member (10) is fixedly connected to the outer wall of the outer frame (5), a pin shaft is fixedly connected to the outer wall of the U-shaped member (10), and a connecting rod (11) is rotatably sleeved on the outer wall of the pin shaft. A connecting plate (12) is fixedly connected to the outer wall of the frame body (1), a protective frame (13) is fixedly connected to the top of the connecting plate (12), a driving mechanism is arranged on the top of the connecting plate (12), and a dust removal mechanism is arranged on the top of the frame body (1).

2. The fine sand screening device according to claim 1, characterized in that, The driving mechanism includes a motor (14), the interior of the protective frame (13) is fixedly connected to the outer wall of the motor (14), a disc (15) is fixedly sleeved on the outer wall of the output shaft of the motor (14), a T-shaped column (16) is fixedly connected to the outer wall of the disc (15), a through hole is formed in the outer wall of the connecting rod (11), and the inner wall of the through hole is rotatably connected to the outer wall of the T-shaped column (16).

3. The fine sand screening equipment according to claim 1, characterized in that, The dust removal mechanism includes a U-shaped plate (17) with a hollow structure. The two ends of the U-shaped plate (17) are fixedly connected to the top of the frame body (1). An air extraction pipe (18) is fixedly communicated with the top of the U-shaped plate (17), one end of the air extraction pipe (18) is fixedly communicated with a dust removal fan, and a plurality of dust suction nozzles (19) are fixedly communicated with the outer wall of the U-shaped plate (17) evenly.

4. A fine sand screening device according to claim 1, characterized in that, Four feet (2) are fixedly connected to the bottom of the frame body (1).

5. A fine sand screening device according to claim 1, characterized in that, A handle (8) is fixedly connected to the outer wall of the inner frame (6).

6. The fine sand screening device according to claim 1, characterized in that, Both of the two L-shaped members (9) are in mutual contact with the outer frame (5). Threaded holes are formed in the outer walls of the two L-shaped members (9), and bolts are threadedly connected to the inner walls of the two threaded holes.

7. The fine sand screening equipment according to claim 2, wherein, A circular hole is formed in the outer wall of the protective frame (13), and the inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the motor (14).

Images