Sand screening device for building

Abstract

The utility model relates to the technical field of building equipment, in particular to a building sand screening device which comprises a base plate, a machine frame fixedly installed on the upper side of the base plate, a screening machine bin arranged on the upper side of the machine frame, a vibration motor installed at the bottom of the screening machine bin, a self-suction material pump installed in the machine frame and a fixed screen installed in the screening machine bin. An adjustable movable screen is arranged at the bottom of the fixed screen, the left end of the movable screen is fixedly connected with a pull plate, the pull plate extends out of the left end of the screening machine bin and is movably connected with the screening machine bin, electric push rods are installed on the front side and the rear side of the screening machine bin, and the output ends of the electric push rods are fixedly connected with the side edge of the pull plate. Through the arrangement of the movable screen and the fixed screen, the hole diameter of the screens can be adjusted, the screening requirements of different gravels can be met, the adaptability of the device is improved, the gravels are sucked into the screening machine bin through the arrangement that the self-suction material pump is matched with the suction pipe and the feeding pipe, automatic feeding of the gravels is achieved, the screening efficiency is improved, and the labor intensity of workers is reduced. And the working intensity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of building equipment technology, and more specifically, to a sand screening device for construction. Background Technology

[0002] Construction sand, also known as building aggregate, refers to fine aggregate with a particle size of less than 4.75 mm and a fineness modulus between 3.7 and 1.6. It is a fundamental material used in large quantities and is indispensable in civil engineering, including infrastructure projects such as buildings, roads, and bridges. Construction sand is an essential material in construction engineering and mainly includes natural sand, manufactured sand, and mixed sand. These types of sand have different characteristics and uses, and together they support the stable development of construction engineering.

[0003] In construction, the screening of sand and gravel is an essential step. However, most existing screening equipment suffers from the following problems: firstly, the screen mesh size is fixed, making it unable to adapt to the screening requirements of different types of sand and gravel; secondly, the feeding method is mostly manual, which is inefficient and labor-intensive. Therefore, there is an urgent need for a new type of sand screening device that can solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a sand screening device for construction, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A sand screening device for construction includes a chassis and a frame. The frame is fixedly mounted on the upper side of the chassis. A screening chamber is provided on the upper side of the frame. Two sets of supports are symmetrically arranged on the front and rear sides of the screening chamber. The supports are fixedly connected to the frame by shock-absorbing springs. A vibration motor is installed at the bottom of the screening chamber. A self-priming material pump is installed inside the frame. The input end of the self-priming material pump is connected to a suction pipe, and the output end of the suction pipe is connected to a feeding pipe. A fixed screen is installed inside the screening chamber, and the bottom of the fixed screen is provided with... An adjustable movable screen is provided, with a pull plate fixedly connected to the left end of the movable screen. The pull plate extends from the left end of the screening machine chamber and is movably connected to it. Electric push rods are installed on both the front and rear sides of the screening machine chamber. The output end of the electric push rod is fixedly connected to the side of the pull plate. A discharge port is provided at the right end of the screening machine chamber. A slag discharge port is provided to the right of the discharge port. The slag discharge port and the discharge port are separated by a partition, and the upper end of the partition is fixedly connected to the fixed screen. A vertical plate is fixedly provided on the left side of the chassis, and an electrical control box is installed on the outside of the vertical plate.

[0007] Furthermore, the chassis base plate is equipped with casters near the four corners;

[0008] Handrails are fixedly installed on the outer side of the upright plate.

[0009] Furthermore, a feeding bin is fixedly provided on the left side of the upper end face of the screening machine bin, and the upper end of the feeding pipe is fixedly connected to the feeding bin. Multiple sets of horizontally distributed material equalization plates are evenly arranged inside the feeding bin.

[0010] Furthermore, the fixed screen is provided with two rows of evenly distributed distribution bars.

[0011] Furthermore, both the discharge port and the slag discharge port are provided with a guide trough with an inclined structure of high inner end and low outer end, and the two sets of guide troughs are vertically distributed, with the bottom of the guide troughs fixedly connected to the frame.

[0012] Furthermore, a suction head is fixedly connected to the outer end of the suction tube. The diameter of the suction head is larger than that of the suction tube, and a handle is provided on the suction head.

[0013] Furthermore, the screening chamber has an overall inclined structure with the left side higher than the right side.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model, through the setting of a movable screen and a fixed screen, can adjust the aperture of the screen. The position of the movable screen can be adjusted by an electric push rod, thereby changing the aperture of the screen holes to adapt to the screening needs of different sands and gravels, and improving the adaptability of the device.

[0016] 2. This utility model uses a self-priming material pump in conjunction with a suction pipe and a feeding pipe to suck sand and gravel into the screening machine chamber, thereby achieving automatic feeding of sand and gravel, improving screening efficiency and reducing labor intensity.

[0017] 3. This utility model device adopts a mobile design and is equipped with casters at the bottom, which facilitates movement between different construction sites and improves the flexibility and convenience of the equipment.

[0018] 4. In this utility model, a feeding bin is fixedly provided on the left side of the upper end face of the screening machine bin. The upper end of the feeding pipe is fixedly connected to the feeding bin. Through the action of the self-priming material pump, sand and gravel are sucked from the feeding bin and transported into the screening machine bin. The feeding bin can shield the sand and gravel during feeding to prevent sand and gravel from splashing and dust generation. Multiple sets of horizontally distributed material equalization plates are evenly arranged inside the feeding bin. The function of the material equalization plates is to make the sand and gravel evenly distributed in the feeding bin and evenly fall on the fixed screen, avoiding sand and gravel accumulation and ensuring the continuity and stability of feeding.

[0019] 5. In this utility model, the fixed screen is provided with two rows of evenly distributed distribution bars. The distribution bars can initially disperse the sand and gravel entering the screening machine chamber, avoid the sand and gravel from accumulating on the screen, and the sand and gravel can be more evenly distributed on the screen, thereby improving screening efficiency. At the same time, it can break up and crush the agglomerated sand and gravel. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a front view of the present invention.

[0022] Figure 3 This is a partial structural schematic diagram of the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of the screening machine hopper in this utility model.

[0024] Figure 5 This is a cross-sectional view of the screening machine compartment in this utility model.

[0025] In the diagram: 1. Screening machine bin; 2. Feeding bin; 3. Vertical plate; 4. Handle; 5. Electrical control box; 6. Casters; 7. Chassis; 8. Frame; 9. Suction pipe; 10. Feeding pipe; 11. Vibration motor; 12. Shock-absorbing spring; 13. Support; 14. Suction head; 15. Handle; 16. Self-priming material pump; 17. Slag discharge port; 18. Guide chute; 19. Pull plate; 20. Electric push rod; 21. Distributor bar; 22. Fixed screen; 23. Equalizing plate; 24. Movable screen; 25. Discharge port; 26. Partition plate. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0027] Example:

[0028] like Figures 1 to 5As shown, a sand screening device for construction includes a chassis 7 and a frame 8. The frame 8 is fixedly installed on the upper side of the chassis 7. A screening chamber 1 is provided on the upper side of the frame 8. Two sets of supports 13 are symmetrically arranged on the front and rear sides of the screening chamber 1. The supports 13 are fixedly connected to the frame 8 through shock-absorbing springs 12. A vibration motor 11 is installed at the bottom of the screening chamber 1. A self-priming material pump 16 is installed inside the frame 8. The input end of the self-priming material pump 16 is connected to a suction pipe 9, and the output end of the suction pipe 9 is connected to a feeding pipe 10. The self-priming material pump 16, in conjunction with the suction pipe 9 and the feeding pipe 10, draws sand and gravel into the screening chamber 1. A fixed screen 22 is installed inside the screening chamber 1 for screening sand and gravel. An adjustable movable screen 24 is provided at the bottom of the fixed screen 22. A pull plate 19 is fixedly connected to the left end of the movable screen 24. The pull plate 19 extends from the left end of the screening chamber 1 and is movably connected to it. The front of the screening chamber 1... Electric push rods 20 are installed on both sides of the rear. The output end of the electric push rod 20 is fixedly connected to the side of the pull plate 19. By driving the pull plate 19 through the electric push rod 20, the position of the movable screen 24 can be adjusted, thereby changing the aperture of the screen holes to adapt to the screening needs of different sands and gravels. The right end of the screening chamber 1 is provided with a discharge port 25, and the right side of the discharge port 25 is provided with a slag discharge port 17. The slag discharge port 17 and the discharge port 25 are separated by a partition 26 to ensure that the screened sands and gravels and slag are discharged separately. The upper end of the partition 26 is fixedly connected to the fixed screen 22. The left side of the chassis 7 is fixedly provided with a vertical plate 3. An electrical control box 5 is installed on the outside of the vertical plate 3 to control various functions of the device, such as the start and stop of the vibrating motor 11 and the extension and retraction of the electric push rod 20. This design solves the problems of the fixed screen aperture in the existing screening equipment, which cannot adapt to the screening needs of different sands and gravels, and the fact that the feeding method is mostly manual, which is inefficient and labor-intensive.

[0029] In this embodiment, casters 6 are installed on the bottom plate of the chassis 7 near the four corners, which makes the device easy to move and can be quickly moved to different work sites, improving the flexibility of the equipment.

[0030] In this embodiment, a handle 4 is fixedly installed on the outer side of the upright plate 3, which makes it convenient for the operator to push the device to move and improves the ease of operation.

[0031] In this embodiment, a feeding bin 2 is fixedly installed on the left side of the upper end face of the screening machine bin 1. The upper end of the feeding pipe 10 is fixedly connected to the feeding bin 2. Through the action of the self-priming material pump 16, sand and gravel are sucked from the feeding bin 2 and transported into the screening machine bin 1. The feeding bin 2 can shield the sand and gravel during feeding to prevent sand and gravel from splashing and dust generation. Multiple sets of horizontally distributed material equalization plates 23 are evenly arranged inside the feeding bin 2. The function of the material equalization plates 23 is to make the sand and gravel evenly distributed in the feeding bin 2 and evenly fall on the fixed screen 22, avoiding sand and gravel accumulation and ensuring the continuity and stability of feeding.

[0032] In this embodiment, the fixed screen 22 is provided with two rows of evenly distributed distribution bars 21. The distribution bars 21 can initially disperse the sand and gravel entering the screening machine chamber 1, avoid the sand and gravel from accumulating on the screen, and the sand and gravel can be more evenly distributed on the screen, thereby improving the screening efficiency. At the same time, it can break up and crush the agglomerated sand and gravel.

[0033] In this embodiment, both the discharge port 25 and the slag discharge port 17 are provided with a guide trough 18 with an inclined structure of high inner end and low outer end, and the two sets of guide troughs 18 are vertically distributed. The bottom of the guide trough 18 is fixedly connected to the frame 8. By setting the guide trough 18 with an inclined structure, the discharged material is guided, ensuring that the screened sand and slag can be smoothly discharged from the discharge port 25 and the slag discharge port 17, and avoiding the accumulation of material at the outlet.

[0034] In this embodiment, a suction head 14 is fixedly connected to the outer end of the suction pipe 9. The suction head 14 is used to directly insert into the sand and gravel pile and directly contact the sand and gravel, effectively reducing the wear of the suction pipe 9. The diameter of the suction head 14 is larger than that of the suction pipe 9, which can increase the suction area and thus improve the suction efficiency. The suction head 14 is provided with a handle 15, which allows the operator to easily move and control the suction head 14, improving the convenience of operation.

[0035] In this embodiment, the screening chamber 1 has an overall inclined structure with the left side higher than the right side. The inclined structure design allows the sand and gravel to flow naturally to the lower right in the screening chamber 1 without the need for additional power. This helps the sand and gravel to be distributed more evenly on the screen and to pass through the screen smoothly, thereby improving screening efficiency.

[0036] The working principle of a sand screening device for construction:

[0037] In actual use, the device is moved to a suitable working site using the casters 6, and pushed to the predetermined position using the handle 4. Then, the suction head 14 is operated by the handle 15 to insert it into the sand and gravel pile, and the self-priming material pump 16 is started to transport the sand and gravel to the feeding hopper 2 through the suction pipe 9 and the feeding pipe 10. In the feeding hopper 2, the sand and gravel are evenly distributed onto the fixed screen 22 of the screening machine hopper 1 by the equalizing plate 23. At the same time, the vibration motor 11 is started to make the screening machine hopper 1 vibrate, which helps the sand and gravel move and be screened on the screen, thus achieving screening. The screened sand and gravel are discharged through the discharge port 25, and the slag is discharged through the slag discharge port 17. The discharge port 25 and the slag discharge port 17 are separated by a partition 26 to ensure that the sand and gravel and the slag are discharged separately. The inclined guide chute 18 guides the discharged material to ensure that the material can be smoothly discharged from the outlet. When it is necessary to adjust the size of the screen aperture, the relative position of the movable screen 24 and the fixed screen 22 is adjusted by the electric push rod 20, thereby changing the aperture of the screen on the fixed screen 22 to adapt to the screening needs of different sands and gravels.

[0038] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A building sand screening device comprising a chassis (7) and a frame (8), characterised in that: The chassis (7) upper side is fixedly provided with a rack (8), the rack (8) upper side is provided with a screening machine bin (1), the screening machine bin (1) front and back sides are symmetrically provided with two groups of supports (13), the support (13) is fixedly connected with the rack (8) through a damping spring (12), the screening machine bin (1) bottom is provided with a vibrating motor (11), the rack (8) inside is provided with a self-suction material pump (16), the self-suction material pump (16) input end is connected with a suction pipe (9), the suction pipe (9) output end is connected with a feeding pipe (10), the screening machine bin (1) inside is provided with a fixed screen (22), the fixed screen (22) bottom is provided with an adjustable movable screen (24), the movable screen (24) left end is fixedly connected with a pull plate (19), the pull plate (19) extends from the screening machine bin (1) left end and is movably connected with it, the screening machine bin (1) front and back sides are both provided with an electric push rod (20), the electric push rod (20) output end is fixedly connected with the pull plate (19) side edge, the screening machine bin (1) right end is provided with a discharge port (25), the discharge port (25) right side is provided with a slag discharge port (17), the slag discharge port (17) and the discharge port (25) are separated through a partition (26), and the partition (26) upper end is fixedly connected to the fixed screen (22), the chassis (7) left side is fixedly provided with a vertical plate (3), the vertical plate (3) outside is provided with an electric control box (5).

2. The building sand screening device according to claim 1, characterized in that: The chassis (7) bottom plate is close to four corners and is provided with universal wheels (6); The vertical plate (3) outside is fixedly provided with a handle (4).

3. The building sand screening device of claim 1, wherein: The screening machine bin (1) upper end face left side is fixedly provided with a feeding bin (2), the feeding pipe (10) upper end is fixedly connected with the feeding bin (2), and the feeding bin (2) inside is uniformly provided with multiple groups of transversely distributed material distributing plates (23).

4. The building sand screening device of claim 1, wherein: The fixed screen (22) is provided with two rows of evenly distributed material distributing rods (21).

5. The building sand screening device of claim 1, wherein: The discharge port (25) and the slag discharge port (17) below are both provided with guide grooves (18) with an inner end high and an outer end low inclined structure, and the two groups of guide grooves (18) are vertically distributed, and the guide groove (18) bottom is fixedly connected to the rack (8).

6. The building sand screening device of claim 1, wherein: The suction pipe (9) outer end is fixedly connected with a suction head (14), the suction head (14) diameter is greater than the suction pipe (9), and the suction head (14) is provided with a handle (15).

7. The building sand screening device of claim 1, wherein: The screening machine bin (1) is inclined as a whole and is high on the left and low on the right.

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