A sand screening device for construction engineering

Abstract

The utility model belongs to sand body screening technical field discloses a construction engineering sand screening device, the highest end of screen body is feed inlet, still includes the feeding mechanism who sets up on ground and is used for distributing to feed inlet, the feeding mechanism includes the slow -feed hopper that is supported to the upward support of support frame, the bottom of slow -feed hopper is equipped with the strip shape of discharge gate, the bottom of discharge gate is installed with the rotary distributor that corresponds with the length of discharge gate, the bottom of distributor is equipped with buffer distributing mechanism, and the distributing mechanism includes the guide pipe that sets up in the discharge gate bottom of rotary distributor, the bottom of guide pipe is equipped with the inclined guide pipe, the end of guide pipe is equipped with the lateral setting of distributing pipe. The utility model avoids the violent collision and friction of sand and screen mesh in vertical direction, and easily causes the wear and tear of screen mesh.

Description

Technical Field

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

[0002] Sand is an essential building material in construction, playing a crucial role in bricklaying, plastering, and concrete production. However, the sand transported to construction sites is often of inconsistent size and diameter, directly impacting the overall quality of the construction project. Therefore, it needs to be screened to achieve a more uniform size to ensure consistent construction quality. Existing rotary drum screens can only screen one type of sand and cannot perform grading. Furthermore, the short material residence time (only 15-30 seconds) during screening results in insufficient penetration of fine particles. Conversely, vibrating screens experience high vertical velocity during feeding, causing severe impacts with the vibrating screen and increasing screen wear. Utility Model Content

[0003] To overcome the technical defects of the existing technology, this utility model provides a sand screening device for construction engineering, which avoids the sand and gravel from violently rubbing against the screen in the vertical direction during feeding, thus preventing wear on the screen.

[0004] The technical solution adopted by this utility model is: a sand screening device for construction engineering, including a base, a screen body inclined to one side is installed on the base via a spring seat, and a plurality of grading screens are installed on the screen body in an up-down arrangement, and the screen hole diameter of the grading screens increases sequentially from top to bottom. A high-frequency vibrator is provided at the bottom of the screen body to drive the screen body to vibrate. The highest end of the screen body is the feeding position. It also includes a feeding mechanism set on the ground for distributing material at the feeding position.

[0005] The feeding mechanism includes a buffer hopper supported upward by a support frame. The bottom of the buffer hopper is provided with a strip-shaped discharge port. A rotary distributor corresponding to the length of the discharge port is installed at the bottom of the discharge port. The bottom of the distributor is provided with a buffer distribution mechanism. The distribution mechanism includes a guide pipe provided at the bottom of the discharge port of the rotary distributor. The bottom of the guide pipe is provided with an inclined guide pipe. The end of the guide pipe is provided with a horizontally arranged distribution pipe.

[0006] Preferably, a reinforcing frame is installed between the feed pipe, the buffer hopper, and the support frame.

[0007] Preferably, the rotary feeder includes a housing installed at the bottom of the feed hopper, a rotating shaft is provided inside the housing, and blades are provided on the rotating shaft in a symmetrical arrangement along the rotating shaft, with a metering groove formed between the blades, and a servo motor for driving the rotating shaft to rotate is provided outside the housing.

[0008] Preferably, the housing is provided with a cleaning mechanism for removing material stuck on the inner wall of the metering groove.

[0009] Preferably, the cleaning mechanism includes a positioning frame disposed inside the housing and on the side that is emptied from the metering tank, and the positioning frame is provided with multiple pulse air nozzles.

[0010] Preferably, it also includes an external high-pressure gas supply device that supplies gas to the pulse nozzle.

[0011] The beneficial effects of this utility model are as follows: This utility model uses a feeding mechanism at the feeding position to distribute the material evenly by rotating the material distributor, which avoids a large accumulation of sand particles on the screen. The sand then enters the buffer feeding mechanism for buffering, and finally is discharged horizontally through the horizontally arranged feeding pipe and fed into the screen. This avoids the sand and gravel from violently rubbing against the screen in the vertical direction, which would easily cause wear to the screen. Attached Figure Description

[0012] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the feeding mechanism of this utility model;

[0015] Figure 3 This is a schematic diagram of the cushioning fabric mechanism of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Base; 2. Spring seat; 3. Screen body; 4. Grading screen; 5. High-frequency vibrator; 6. Feeding mechanism; 7. Support frame; 8. Buffer hopper; 9. Discharge port; 10. Rotary distributor; 11. Buffer distribution mechanism; 12. Guide pipe; 13. Guide tube; 14. Distribution pipe; 15. Reinforcing frame; 16. Shell; 17. Rotating shaft; 18. Blade; 19. Metering trough. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0018] like Figures 1-3 As shown, this embodiment provides a sand screening device for construction engineering, including a base 1. A screen body 3 inclined to one side is installed on the base 1 via a spring seat 2, and a plurality of grading screens 4 arranged vertically are installed on the screen body 3. The diameter of the screen holes of the grading screens 4 increases sequentially from top to bottom. A high-frequency vibrator 5 is provided at the bottom of the screen body 3 to drive the screen body 3 to vibrate. The above is the composition of the existing vibrating screen, and the specific details will not be repeated. The highest end of the screen body 3 is the feed position, and it also includes a feeding mechanism 6 set on the ground for distributing material at the feed position. The feeding mechanism 6 includes a buffer hopper 8 supported upward by a support frame 7. The bottom of the buffer hopper 8 is provided with a strip-shaped discharge port 9. A rotating distributor 10 with a length corresponding to the discharge port 9 is installed at the bottom of the discharge port. The bottom of the distributor is provided with a buffer distribution mechanism 11. The distribution mechanism includes a guide pipe 12 set at the bottom of the discharge port of the rotating distributor 10. The bottom of the guide pipe 12 is provided with an inclined guide pipe 13. The end of the guide pipe 13 is provided with a horizontally arranged distribution pipe 14. Through the feeding mechanism 6 distributing material at the feed position, the rotating distributor 10 distributes material evenly, avoiding a large accumulation of sand on the screen. The sand then enters the buffer distribution mechanism 11 for buffering, and finally is discharged horizontally through the horizontally arranged distribution pipe 14. This avoids violent collision between the sand and the screen in the vertical direction, which could easily cause wear to the screen.

[0019] A reinforcing frame 15 is installed between the feed pipe 12, the slowing hopper 8, and the support frame 7, which improves the connection strength.

[0020] The rotary feeder 10 includes a housing 16 installed at the bottom of the feed hopper 8. A rotating shaft 17 is provided inside the housing 16, and blades 18 are symmetrically distributed along the rotating shaft 17. A metering groove 19 is formed between the blades 18. A servo motor that drives the rotating shaft to rotate is provided outside the housing 17. In this way, the rotating shaft is driven by the servo motor to rotate, thereby changing the metering groove and facilitating the transfer of sand falling into the positioning groove to the guide pipe 12. This achieves the function of positioning and feeding, and avoids the large accumulation of sand.

[0021] The housing 16 is equipped with a cleaning mechanism 20 for removing material stuck to the inner wall of the metering groove 19. The cleaning mechanism 20 includes a positioning frame 21 disposed within the housing 16 and on the side emptied from the metering groove 19. The positioning frame 21 is equipped with multiple pulse air nozzles 22. An external high-pressure gas supply device is also included, which supplies gas to the pulse air nozzles 22. This purges the inside of the positioning groove with high-pressure pulse gas, thereby removing sand and gravel stuck in the metering groove.

[0022] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0023] During operation, the feeding mechanism 6 at the inlet position distributes the material evenly, with a rotating distributor 10 preventing large accumulations of sand on the screen. The sand then enters the buffer distribution mechanism 11 for cushioning, and finally exits laterally through the horizontally arranged distribution pipe 14. This prevents the sand and gravel from violently rubbing against the screen in the vertical direction, which could easily cause wear to the screen. A high-pressure gas supply device supplies air to the pulse nozzle 22. This blows high-pressure pulse gas into the positioning groove, thereby removing the sand and gravel stuck in the metering groove.

[0024] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A sand screening device for construction engineering, comprising a base (1), a screen body (3) inclined to one side is mounted on the base (1) via a spring seat (2), and a plurality of grading screens (4) arranged vertically are mounted on the screen body (3), wherein the diameter of the screen holes of the grading screens (4) increases sequentially from top to bottom, and a high-frequency vibrator (5) is provided at the bottom of the screen body (3) to drive the screen body (3) to vibrate, characterized in that: The highest end of the screen body (3) is the feeding position, and it also includes a feeding mechanism (6) set on the ground for feeding the material at the feeding position. The feeding mechanism (6) includes a buffer hopper (8) supported upward by a support frame (7). The bottom of the buffer hopper (8) is provided with a strip-shaped discharge port (9). A rotary feeder (10) corresponding to the length of the discharge port (9) is installed at the bottom of the discharge port. A buffer feeding mechanism (11) is provided at the bottom of the feeder. The feeding mechanism includes a guide pipe (12) provided at the bottom of the discharge port of the rotary feeder (10). An inclined guide pipe (13) is provided at the bottom of the guide pipe (12). A horizontally arranged feeding pipe (14) is provided at the end of the guide pipe (13).

2. A construction site sand screening device as claimed in claim 1, wherein: A reinforcing frame (15) is installed between the feed pipe (12), the slow hopper (8), and the support frame (7).

3. A construction site sand screening device as claimed in claim 1, wherein: The rotary feeder (10) includes a housing (16) installed at the bottom of the feed hopper (8), a rotating shaft (17) is provided inside the housing (16), and blades (18) are symmetrically distributed along the rotating shaft (17) on the rotating shaft (17), and a metering groove (19) is formed between the blades (18), and a servo motor that drives the rotating shaft to rotate is provided outside the housing (16).

4. A construction site sand screening device as claimed in claim 3, wherein: The housing (16) is provided with a cleaning mechanism (20) for removing material stuck on the inner wall of the metering groove (19).

5. A construction site sand screening device according to claim 4, characterised in that: The cleaning mechanism (20) includes a positioning frame (21) disposed inside the housing (16) and on the side that is emptied from the metering groove (19), and the positioning frame (21) is provided with a plurality of pulse air nozzles (22).

6. A construction site sand screening device according to claim 5, characterised in that: It also includes an external high-pressure gas supply device that supplies gas to the pulse nozzle (22).

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