A sand screening device for construction engineering

Abstract

This utility model relates to the field of sand screening equipment, and more particularly to a sand screening equipment for construction engineering. The technical problem is that sand screening at construction sites may result in excessive dust generation and the inability of the same equipment to change the fineness of the sand and gravel. The technical solution is a sand screening equipment for construction engineering, comprising a chassis structure, an angle adjustment structure, a conveyor belt structure, a sand screening structure, a dust cover structure, and a feeding structure. This utility model allows for adjustment of the tilt angle of the overall screening section through the angle adjustment structure, enabling variations in sand screening efficiency by using drum screens with different apertures. Simultaneously, the dust cover structure greatly reduces dust generation, preventing fine sand and dust from being thrown into the internal parts of the drum screen during screening and causing wear on the equipment, while also protecting the construction environment at the construction site.

Description

Technical Field

[0001] This utility model relates to the field of sand screening equipment, and in particular to a sand screening equipment for construction engineering. Background Technology

[0002] Sand screening equipment is frequently seen on construction sites and construction sites. The sand and gravel raw materials used in construction projects are often piled up in the open, containing large impurities such as stones and possibly a large amount of dust. During the sand screening process, excessive dust is often generated due to the uncontrollability of the sand and gravel raw materials and the lack of dust covers.

[0003] Sand screening equipment mainly consists of a frame, conveyor belt, rotary screen, engine or motor and other components. Most existing sand screening equipment is fixed, and the screen replacement of both drum-type and vibrating sand screening machines is either impossible or quite troublesome. However, the required coarseness of sand and gravel changes during the construction cycle of a building project. At this time, two or more sand screening machines will be needed to enter the construction site, resulting in a waste of site resources and manpower.

[0004] Therefore, in response to the problems of excessive dust generation during sand screening at construction sites and the inability of the same equipment to change the fineness of sand and gravel, a sand screening device for construction projects can be designed to minimize dust generation and control the fineness and efficiency of sand screening. Utility Model Content

[0005] To overcome the problems of excessive dust generation during sand screening at construction sites and the inability of the same equipment to change the fineness of sand and gravel.

[0006] The technical solution of this utility model is as follows: a sand screening device for construction engineering, comprising a chassis structure, an angle adjustment structure, a conveyor belt structure, a sand screening structure, a dust cover structure, and a feeding structure; the angle adjustment structure is fixedly connected to the rear end of the chassis structure, the conveyor belt structure is rotatably connected to the front end of the chassis structure, the conveyor belt structure is movably connected to the angle adjustment structure, the feeding structure is fixedly connected to the upper end of the outer frame on both sides of the conveyor belt structure, the dust cover structure is fixedly connected to the front end of the conveyor belt structure, the sand screening structure is fixedly connected inside the conveyor belt structure, and the drum screen is contained inside the dust cover structure.

[0007] Preferably, the rear end of the chassis structure is connected to an angle adjustment structure, which can adjust the angle of the conveyor belt structure. When not in operation, the conveyor belt structure can be fitted into the chassis structure to lower the vehicle's center of gravity for easy movement and storage. During use, the drum screen can be replaced according to different functional needs. The angle adjustment structure can be used to change the tilt angle of the conveyor belt structure and the sand screening structure to adjust the fineness and efficiency of the sand screening. A fully enclosed dust cover structure surrounds the outside of the drum screen to prevent fine sand and dust from being thrown into the parts during screening, causing wear on the equipment and pollution to the construction site environment.

[0008] Preferably, the chassis structure includes wheels, axles, a vehicle frame, and reinforcing blocks; the axles are fixedly connected to the front and rear ends of the vehicle frame, the wheels are rotatably connected to the axles protruding from the vehicle frame, the reinforcing blocks are fixedly connected to the front end of the vehicle frame, the wheels allow the sand screening equipment to move around the construction site, making the equipment more convenient to use, and the frame design of the vehicle body reduces the weight of the equipment, giving the equipment a lightweight and fast attribute.

[0009] Preferably, the angle adjustment structure includes a limiting groove tube, a base, a support frame, a screw, a nut, a saddle, and a base support. The limiting groove tube is fixedly connected to the left and right sides of the vehicle frame, the base is fixedly connected to the upper part of the rear crossbeam of the vehicle frame, two pairs of support frames are rotatably connected between the base and the saddle via screws, the nut is fixedly connected to the right side of the screw, and the base support is movably connected inside the limiting groove tube. The base, support frame, screw, nut, and saddle constitute a scissor jack. The height of the jack is adjusted by adjusting the length of the screw in the support frame through the nut, which pushes the base support to move inside the limiting groove tube to achieve the purpose of adjusting the angle.

[0010] Preferably, the conveyor belt structure includes an outer frame, a conveyor belt, a first motor, a first belt, a pulley, a first bracket, a first limiting block, idlers, and a conveyor belt support. The first limiting block is fixedly connected inside the outer frame, and the outer frame is fixedly connected to the conveyor belt support. The idlers are rotatably connected to the front and rear sides inside the conveyor belt support, and the conveyor belt rotates around the idlers. The first bracket is fixedly connected to the upper end of the conveyor belt support, the first motor is fixedly connected to the first bracket, and the pulley is fixedly connected to the left and right sides of the upper idler. The first motor and the pulley are connected through the first belt. The first motor outputs power to drive the conveyor belt to rotate clockwise around the idlers, continuously throwing the screened fine sand out from the top through the conveyor belt.

[0011] Preferably, the sand screening structure includes a drum screen, a discharge port, a frame, rollers, a rotating shaft, a second motor, and a second belt. The discharge port is fixedly connected to the front end of the frame, the rotating shaft is rotatably connected to the frame, the rollers are fixedly connected to the rotating shaft, and the drum screen is rotatably connected to four rollers on both sides. The second motor is connected to the rotating shaft via the second belt. The drum screen can be replaced according to the required fineness. The second motor outputs power to drive the drum screen to rotate. A discharge port is added to the front of the drum screen to discharge larger sand and gravel forward.

[0012] As a preferred embodiment, the dust cover structure includes a dust cover side plate, a dust cover top plate, and a second limiting block; the dust cover top plate is installed on the upper part of the dust cover side plate, and the second limiting block is fixedly connected to the middle of the lower dust cover side plate. The dust cover top plate and the upper dust cover side plate are designed to be detachable, so that they can be easily disassembled when the drum screen needs to be replaced.

[0013] As a preferred embodiment, the feeding structure includes a hopper, a second support frame, and an inlet; the hopper is fixedly connected to the upper end of the second support frame, and the inlet is movably connected to the lower end of the hopper, allowing for adjustment of the inlet to control the input speed of sand and gravel.

[0014] The beneficial effects of this utility model are:

[0015] 1. The angle of the conveyor belt structure can be adjusted by the angle adjustment structure. When not in operation, the conveyor belt structure can be fitted with the chassis structure to lower the center of gravity of the vehicle for easy movement and storage. When in use, the drum screen can be replaced according to different functional needs. The tilt angle of the conveyor belt structure and the sand screening structure can be changed by the angle adjustment structure to adjust the coarseness and efficiency of sand screening. The fully enclosed dust cover structure wraps around the outside of the drum screen to prevent fine sand and dust from being thrown into the parts during screening, causing wear on the equipment and pollution to the construction site environment.

[0016] 2. The dust cover structure can greatly prevent dust from being generated, and prevent fine sand and dust from being thrown into the inside of the drum screen during screening, causing wear on the equipment, while also protecting the construction environment of the construction site.

[0017] 3. The angle adjustment structure can adjust the angle of the conveyor belt and the drum screen. In addition, with the replaceable drum screen, the fineness of the sand and the efficiency of screening can be controlled. Attached Figure Description

[0018] Figure 1 The diagram shown is a three-dimensional structural schematic of the sand screening equipment for construction engineering according to this utility model.

[0019] Figure 2 The diagram shown is a three-dimensional structural schematic of the chassis of the sand screening equipment for construction engineering according to this utility model.

[0020] Figure 3The diagram shown is a three-dimensional structural schematic of the angle adjustment structure of the sand screening equipment for construction engineering according to this utility model.

[0021] Figure 4 The diagram shown is a three-dimensional structural schematic of the conveyor belt of the sand screening equipment for construction engineering according to this utility model.

[0022] Figure 5 The diagram shown is a three-dimensional structural schematic of the sand screening equipment for construction engineering according to this utility model.

[0023] Figure 6 The diagram shown is a three-dimensional structural schematic of the dustproof cover of the sand screening equipment for construction engineering according to this utility model.

[0024] Figure 7 The diagram shown is a three-dimensional structural schematic of the feeding structure of the sand screening equipment for construction engineering according to this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Chassis structure; 2. Angle adjustment structure; 3. Conveyor belt structure; 4. Sand screening structure; 5. Dust cover structure; 6. Feeding structure; 7. Wheel; 8. Axle; 9. Body frame; 10. Reinforcing block; 11. Limiting groove tube; 12. Base; 13. Support frame; 14. Screw; 15. Nut; 16. Saddle; 17. Base support; 18. Outer frame; 19. Conveyor belt; 20. No. 1 electric motor Machine; 21. Belt No. 1; 22. Pulley; 23. Support No. 1; 24. Limiting Block No. 1; 25. Idler Roller; 26. Conveyor Belt Support; 27. Drum Screen; 28. Discharge Port; 29. ​​Frame; 30. Support Roller; 31. Shaft; 32. Motor No. 2; 33. Belt No. 2; 34. Dustproof Side Plate; 35. Dustproof Top Plate; 36. Limiting Block No. 2; 37. Hopper; 38. Support No. 2; 39. Inlet; Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Please see Figure 1In this embodiment, the system includes a chassis structure 1, an angle adjustment structure 2, a conveyor belt structure 3, a sand screening structure 4, a dust cover structure 5, and a feeding structure 6. The angle adjustment structure 2 is fixedly connected to the rear end of the chassis structure 1. The conveyor belt structure 3 is rotatably connected to the front end of the chassis structure 1, and the conveyor belt structure 3 is movably connected to the angle adjustment structure 2. The feeding structure 6 is fixedly connected to the upper ends of the outer frames 18 on both sides of the conveyor belt structure 3. The dust cover structure 5 is fixedly connected to the front end of the conveyor belt structure 3. The sand screening structure 4 is fixedly connected inside the conveyor belt structure 3. The drum screen 27 is contained inside the dust cover structure 5. The rear end of the chassis structure 1 is connected to... Next, the angle adjustment structure 2 can adjust the angle of the conveyor belt structure 3. When not in operation, the conveyor belt structure 3 can be attached to the chassis structure 1 to lower the center of gravity of the vehicle for easy movement and storage. When in use, the drum screen 27 can be replaced according to different functional needs. The tilt angle of the conveyor belt structure 3 and the sand screening structure 4 can be changed by adjusting the sand screening fineness and efficiency. The fully enclosed dust cover structure 5 is wrapped around the outside of the drum screen 27 to prevent fine sand and dust from being thrown into the parts of the drum screen 27 during screening, causing wear on the equipment and pollution to the construction site environment.

[0028] Please see Figures 2-3 In this embodiment, the chassis structure 1 includes wheels 7, axles 8, a vehicle frame 9, and reinforcing blocks 10. Axles 8 are fixedly connected to the front and rear ends of the vehicle frame 9. Wheels 7 are rotatably connected to the portion of axles 8 protruding from the vehicle frame 9. Reinforcing blocks 10 are fixedly connected to the front end of the vehicle frame 9. Wheels 7 allow the sand screening equipment to move freely within the construction site, making the equipment more convenient to use. The frame design of the vehicle body reduces the equipment's weight, giving it a lightweight and convenient nature. The angle adjustment structure 2 includes a limiting groove 11, a base 12, a support frame 13, a screw 14, a nut 15, a saddle 16, and a base support. 17; The limiting groove tube 11 is fixedly connected to the left and right sides of the vehicle frame 9, the base 12 is fixedly connected to the upper part of the rear crossbeam of the vehicle frame 9, two pairs of support frames 13 are rotatably connected between the base 12 and the saddle 16 through screws 14, the nut 15 is fixedly connected to the right side of the screw 14, and the bottom support 17 is movably connected inside the limiting groove tube 11. The base 12, support frame 13, screw 14, nut 15, and saddle 16 constitute a scissor jack. The height of the jack is adjusted by adjusting the length of the screw 14 in the support frame 13 through the nut 15, which pushes the bottom support 17 to move inside the limiting groove tube 11 to achieve the purpose of adjusting the angle.

[0029] Please see Figure 4In this embodiment, the conveyor belt structure 3 includes an outer frame 18, a conveyor belt 19, a first motor 20, a first belt 21, a pulley 22, a first bracket 23, a first limiting block 24, an idler roller 25, and a conveyor belt support 26. The first limiting block 24 is fixedly connected inside the outer frame 18, and the outer frame 18 is fixedly connected to the conveyor belt support 26. The idler roller 25 is rotatably connected to the front and rear sides inside the conveyor belt support 26. The conveyor belt 19 rotates around the idler roller 25. The first bracket 23 is fixedly connected to the upper end of the conveyor belt support 26. The first motor 20 is fixedly connected to the first bracket 23. The pulley 22 is fixedly connected to the left and right sides of the upper idler roller 25. The first motor 20 and the pulley 22 are connected through the first belt 21. The first motor 20 outputs power to drive the conveyor belt 19 to rotate clockwise around the idler roller 25, continuously throwing the screened fine sand out from the top through the conveyor belt 19.

[0030] Please see Figures 5-7 In this embodiment, the sand screening structure 4 includes a drum screen 27, a discharge port 28, a frame 29, support rollers 30, a rotating shaft 31, a second motor 32, and a second belt 33. The discharge port 28 is fixedly connected to the front end of the frame 29, the rotating shaft 31 is rotatably connected to the frame 29, the support rollers 30 are fixedly connected to the rotating shaft 31, and the drum screen 27 is rotatably connected to four support rollers 30 on both sides. The second motor 32 is connected to the rotating shaft 31 via the second belt 33. The drum screen 27 can be replaced according to the required coarseness. The second motor 32 outputs power to drive the drum screen 27 to rotate. The discharge port 28 is added to the front side of the drum screen 27 to screen the sand. Larger sand and gravel are discharged forward. The dust cover structure 5 includes a dust cover side plate 34, a dust cover top plate 35, and a second limiting block 36. The dust cover top plate 35 is installed on the upper end of the dust cover side plate 34, and the second limiting block 36 is fixedly connected to the middle of the lower dust cover side plate 34. The dust cover top plate 35 and the upper dust cover side plate 34 are designed to be detachable, so that they can be easily disassembled when the drum screen 27 needs to be replaced. The feeding structure 6 includes a hopper 37, a second support 38, and a feed inlet 39. The hopper 37 is fixedly connected to the upper end of the second support 38, and the feed inlet 39 is movably connected to the lower end of the hopper 37. The feed inlet 39 can be adjusted to control the speed of sand and gravel input.

[0031] During operation, construction workers use a tractor to transport the sand screening equipment to the location where screening is needed via wheels 7 at the lower end of the chassis structure 1. After stopping, the wheels 7 are fixed. The drum screen 27 is replaced according to the required sand fineness and efficiency. The angle adjustment structure 2 is used to adjust the angles of the conveyor belt structure 3, sand screening structure 4, dust cover structure 5, and feeding structure 6 on the vehicle body. Once the required angles are achieved, motor 20 is started first, outputting power to drive the conveyor belt. Then, motor 32 is started, causing the drum screen 27 to rotate on the support rollers 30, and then the feeding mechanism is activated. The sand and gravel raw materials to be screened are placed in the hopper 37 of structure 6. The speed of the raw materials entering the drum screen 27 is controlled by adjusting the opening of the feed port 39. After the sand and gravel raw materials enter the drum screen 27, the sand particles that meet the coarseness requirements are thrown out of the drum screen 27 through the screen holes. Since the position of the throw is uncontrollable, the dust cover structure 5 plays a role in preventing fine sand particles from being thrown into the interior of the parts, and also in preventing dust. Small stones and other impurities that do not meet the coarseness requirements are discharged to the discharge port 28 under the action of gravity and the tilt angle, thus completing the sand screening operation.

[0032] Through the above steps, the detachable dust cover structure 5 allows for quick replacement of the drum screen 27 to adapt to screening requirements of different coarseness. The angle adjustment structure 2 can adjust the tilt angle of the overall screening section. Combined with the control of the feed inlet 39 and the speed changes of motor 1 20 and motor 2 32, the sand screening efficiency can be varied. At the same time, the dust cover structure 5 can greatly prevent dust from being generated, preventing fine sand and dust from being thrown into the interior of the drum screen 27 during screening and causing wear on the equipment, while also protecting the construction environment of the construction site.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A sand screening device for construction engineering, comprising a chassis structure (1); characterized in that: It also includes an angle adjustment structure (2), a conveyor belt structure (3), a sand screening structure (4), a dust cover structure (5), and a feeding structure (6); the angle adjustment structure (2) is fixedly connected to the rear end of the chassis structure (1), the conveyor belt structure (3) is rotatably connected to the front end of the chassis structure (1), the conveyor belt structure (3) is movably connected to the angle adjustment structure (2), the feeding structure (6) is fixedly connected to the upper end of the outer frame (18) on both sides of the conveyor belt structure (3), the dust cover structure (5) is fixedly connected to the front end of the conveyor belt structure (3), the sand screening structure (4) is fixedly connected inside the conveyor belt structure (3), and the drum screen (27) is contained inside the dust cover structure (5).

2. The sand screening equipment for construction engineering according to claim 1, characterized in that: The chassis structure (1) includes wheels (7), axles (8), a vehicle frame (9), and reinforcing blocks (10); the axles (8) are fixedly connected to the front and rear ends of the vehicle frame (9), the wheels (7) are rotatably connected to the part of the axles (8) that protrudes from the vehicle frame (9), and the reinforcing blocks (10) are fixedly connected to the front end of the vehicle frame (9).

3. The sand screening equipment for construction engineering according to claim 2, characterized in that: The angle adjustment structure (2) includes a limiting groove (11), a base (12), a support frame (13), a screw (14), a nut (15), a saddle (16), and a base (17). The limiting groove (11) is fixedly connected to the left and right sides of the vehicle frame (9), the base (12) is fixedly connected to the upper part of the rear crossbeam of the vehicle frame (9), two pairs of support frames (13) are rotatably connected between the base (12) and the saddle (16) through the screw (14), the nut (15) is fixedly connected to the right side of the screw (14), and the base (17) is movably connected inside the limiting groove (11).

4. The sand screening equipment for construction engineering according to claim 3, characterized in that: The conveyor belt structure (3) includes an outer frame (18), a conveyor belt (19), a first motor (20), a first belt (21), a pulley (22), a first bracket (23), a first limiting block (24), a roller (25), and a conveyor belt support (26). The first limiting block (24) is fixedly connected inside the outer frame (18), the outer frame (18) is fixedly connected to the conveyor belt support (26), the roller (25) is rotatably connected to the front and rear sides inside the conveyor belt support (26), the conveyor belt (19) rotates around the roller (25), the first bracket (23) is fixedly connected to the upper end of the conveyor belt support (26), the first motor (20) is fixedly connected to the first bracket (23), the pulley (22) is fixedly connected to the left and right sides of the upper roller (25), and the first motor (20) and the pulley (22) are connected through the first belt (21).

5. The sand screening equipment for construction engineering according to claim 4, characterized in that: The sand screening structure (4) includes a drum screen (27), a discharge port (28), a frame (29), rollers (30), a rotating shaft (31), a second motor (32), and a second belt (33). The discharge port (28) is fixedly connected to the front end of the frame (29), the rotating shaft (31) is rotatably connected to the frame (29), the rollers (30) are fixedly connected to the rotating shaft (31), the drum screen (27) is rotatably connected to the four rollers (30) on both sides, and the second motor (32) is connected to the rotating shaft (31) through the second belt (33).

6. The sand screening equipment for construction engineering according to claim 5, characterized in that: The dust cover structure (5) includes a dust cover side plate (34), a dust cover top plate (35), and a second limiting block (36); the dust cover top plate (35) is installed on the upper end of the dust cover side plate (34), and the second limiting block (36) is fixedly connected to the middle of the lower dust cover side plate (34).

7. The sand screening equipment for construction engineering according to claim 6, characterized in that: The feeding structure (6) includes a hopper (37), a second support (38), and a feed inlet (39); the hopper (37) is fixedly connected to the upper end of the second support (38), and the feed inlet (39) is movably connected to the lower end of the hopper (37).

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