A new sand and stone screening device for construction engineering
By introducing a rotatable screen cylinder and brush design into the sand and gravel screening device, the problem of fixed screen position is solved, the screen hole is prevented from clogging and the screening is continuous, thus improving screening efficiency and convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG BAIYUN CONSTR GRP CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-06-09
AI Technical Summary
The screen positions of existing sand and gravel screening devices are fixed, making it difficult to adapt to the diverse characteristics of sand and gravel. This leads to easy clogging of the screen holes, reduced screening efficiency, and impact on continuous operation capability.
A sand and gravel screening device with a rotatable screen cylinder and a brush was designed. The screen cylinder and the brush rotate in opposite directions through a motor-driven connecting shaft. The brush scrapes the filter screen to prevent clogging, and a replaceable fine sand container ensures continuous screening.
It effectively prevents sieve hole clogging, improves screening efficiency, and ensures the continuity and convenience of screening work.
Smart Images
Figure CN224332657U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of construction engineering equipment technology, specifically a new type of sand and gravel screening device for construction engineering. Background Technology
[0002] Patent document CN109731777B discloses a sand and gravel screening device. This device includes multiple stacked frame units, each containing an inclined screen with decreasing mesh size from top to bottom, thus achieving multi-stage screening. This design simplifies the operation process, reduces equipment costs, and improves ease of use.
[0003] However, in practical applications, it has been found that the screen positions of the aforementioned sand and gravel screening devices are fixed, making it difficult to flexibly adjust them according to the specific characteristics of the sand and gravel. When processing irregularly shaped sand and gravel or sand and gravel with high mud content, screen clogging easily occurs, leading to a decrease in screening efficiency and a certain impact on continuous operation capability. Therefore, an improved screening device capable of adapting to diverse sand and gravel characteristics needs to be developed. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a new type of sand and gravel screening device for construction engineering.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a novel sand and gravel screening device for construction engineering, comprising a base plate, characterized in that: two sets of side plates are symmetrically arranged on both sides of the base plate, a top plate for fixing the discharge hole is connected to the top of the side plates, a rear fixing plate is connected to the bottom of the top plate, a screen cylinder is connected to the rear fixing plate, filter mesh holes are evenly arranged on the screen cylinder, a large gear is provided at the lower end of the screen cylinder, two sets of connecting shafts are symmetrically rotatably connected to the rear fixing plate, a front fixing plate is connected to the bottom end of the screen cylinder, a motor is fixedly connected to the front fixing plate, one set of connecting shafts is fixedly connected to the output end of the motor, and brushes are evenly arranged on the connecting shafts, and a discharge hopper is fixedly provided on one side of the front fixing plate.
[0006] As a further description of the above technical solution: the base plate is provided with a fine sand holding box, which is replaceable.
[0007] As a further description of the above technical solution: the small gear meshes with the large gear and is used to drive the connecting shaft and the screen cylinder to rotate in opposite directions.
[0008] As a further description of the above technical solution: one end of the screen cylinder is rotatably connected to the front fixed plate, and the other end of the screen cylinder is rotatably connected to the rear fixed plate.
[0009] As a further description of the above technical solution: the front fixing plate and the rear fixing plate are respectively fixedly connected to the upper side of the base plate.
[0010] As a further description of the above technical solution: the brush is used to scrape the sieve cylinder and filter mesh by rotating the connecting shaft.
[0011] As a further description of the above technical solution: the discharge hole is located on the side of the screen cylinder near the rear fixed plate, and the lower end of the discharge hole is located on the inner side of the screen cylinder.
[0012] This utility model has the following beneficial effects:
[0013] 1. The motor drives the connecting shaft to rotate, which in turn causes the brush to scrape the screen cylinder and filter mesh, effectively preventing sand and gravel from clogging the filter mesh during the screening process.
[0014] 2. The system features replaceable fine sand containers for easy periodic replacement and cleaning, ensuring the continuity of the screening process. Attached Figure Description
[0015] Figure 1 A three-dimensional structural diagram of a novel sand and gravel screening device for construction engineering proposed in this utility model. Figure 1 ;
[0016] Figure 2 A three-dimensional structural diagram of a novel sand and gravel screening device for construction engineering proposed in this utility model. Figure 2 ;
[0017] Figure 3 A three-dimensional structural diagram of a novel sand and gravel screening device for construction engineering proposed in this utility model. Figure 3 ;
[0018] Figure 4 This is a partial structural schematic diagram of a novel sand and gravel screening device for construction engineering proposed in this utility model.
[0019] Legend:
[0020] 1. Base plate; 2. Side plate; 3. Top plate; 4. Front fixed plate; 5. Rear fixed plate; 6. Motor; 7. Pinion; 8. Gear; 9. Screen cylinder; 10. Filter screen; 11. Connecting shaft; 12. Brush; 13. Discharge hole; 14. Fine sand container; 15. Feed hopper. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.
[0022] Example 1:
[0023] like Figures 1 to 4 As shown, this embodiment provides a novel sand and gravel screening device for construction engineering, including a base plate 1, two sets of side plates 2 symmetrically arranged on both sides of the base plate 1, a top plate 3 for fixing the discharge hole 13 connected to the top of the side plates 2, a rear fixing plate 5 connected below the top plate 3, a screen cylinder 9 connected to the rear fixing plate 5, filter mesh holes 10 evenly arranged on the screen cylinder 9, a large gear 8 provided at the lower end of the screen cylinder 9, two sets of connecting shafts 11 symmetrically rotatably connected to the rear fixing plate 5, a front fixing plate 4 connected to the bottom end of the screen cylinder 9, a motor 6 fixedly connected to the front fixing plate 4, one set of connecting shafts 11 fixedly connected to the output end of the motor 6, and brushes 12 evenly arranged on the connecting shafts 11, and a discharge hopper 15 fixedly arranged on one side of the front fixing plate 4.
[0024] In this embodiment, when the motor 6 is started, the output end of the motor 6 will drive one of the connecting shafts 11 to rotate. The small gear 7 will start to rotate under the drive of the connecting shaft 11. The small gear 7 meshes with the large gear 8. The rotation of the small gear 7 will drive the large gear 8 to rotate. Since the rotation directions of the small gear 7 and the large gear 8 are opposite, the screen cylinder 9 starts to rotate in opposite directions under the support of the front fixed plate 4 and the rear fixed plate 5.
[0025] Specifically, the small gear 7 is meshed with the large gear 8 to drive the connecting shaft 11 and the screen cylinder 9 to rotate in opposite directions.
[0026] It should be noted that the model of motor 6 is UDL002. The rotation speed of screen cylinder 9 can be adjusted by changing the rotation speed of motor 6. The adjustment of the rotation speed can adapt to the screening needs of sand and gravel raw materials with different particle size distributions.
[0027] Specifically, one end of the sieve cylinder 9 is rotatably connected to the front fixed plate 4, and the other end of the sieve cylinder 9 is rotatably connected to the rear fixed plate 5.
[0028] Specifically, the front fixing plate 4 and the rear fixing plate 5 are respectively fixedly connected to the upper side of the base plate 1.
[0029] It should be noted that when users are about to start this new type of sand and gravel screening device for construction projects, they should first ensure that the entire device is in a stable position, and the base plate 1 should be placed on a flat ground or working platform.
[0030] Example 2:
[0031] Based on Example 1, a brush 12 is provided to ensure that the sieve cylinder 9 is cleaned in a timely manner.
[0032] Specifically, the brush 12 is used to scrape the sieve cylinder 9 and the filter mesh 10 by rotating the connecting shaft 11.
[0033] It should be noted that the rotation direction of the brush 12 is opposite to that of the screen cylinder 9. This allows the brush 12 to effectively scrape the filter mesh 10 on the screen cylinder 9, and the brush 12 can promptly remove the blockages on the filter mesh 10 to ensure that the mesh of the filter mesh 10 is unobstructed.
[0034] Example 3:
[0035] Based on embodiment 2, the discharge hole 13 is located on the side of the screen cylinder 9 near the rear fixing plate 5, and its lower end extends to the inner side of the screen cylinder 9. This design allows the raw material to smoothly enter the interior of the screen cylinder 9.
[0036] Specifically, the discharge hole 13 is located on the side of the screen cylinder 9 near the rear fixing plate 5, and the lower end of the discharge hole 13 is located on the inner side of the screen cylinder 9.
[0037] It should be noted that during the rotation of the screen cylinder 9, fine sand particles can pass smoothly through the mesh of the filter screen 10 under the action of centrifugal force and gravity generated by the rotation of the screen cylinder 9.
[0038] Specifically, the base plate 1 is provided with a fine sand container 14, which is replaceable.
[0039] It should be noted that fine sand falls into the fine sand collection box 14 on the bottom plate 1 through the filter mesh 10, while larger gravel cannot pass through the filter mesh 10. With the rotation and tilting of the screen cylinder 9, the gravel will move backward along the inner wall of the screen cylinder 9 and finally be sent out from the rear fixed plate 5.
[0040] Working principle: In practical application, the user first starts the motor 6, which makes the connecting shaft 11 rotate, driving the small gear 7 and the brush 12 to rotate. The rotation of the small gear 7 drives the large gear 8 to rotate, and the rotation of the large gear 8 drives the screen cylinder 9 to rotate on the front fixed plate 4 and the rear fixed plate 5. The small gear 7 and the large gear 8 rotate in opposite directions, driving the brush 12 and the screen cylinder 9 to rotate in opposite directions, so as to clean the filter screen 10 and prevent the filter screen 10 from clogging. Then the user can pour the raw material to be processed into the discharge hole 13. The raw material enters the screen cylinder 9, passes through the filter screen 10, and the fine sand is screened through the mesh holes into the fine sand collection box 14 placed on the bottom plate 1. The crushed stone is sent out from the rear fixed plate 5 through the screen cylinder 9.
[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A novel sand and gravel screening device for construction engineering, comprising a base plate (1), characterized in that: Two sets of side plates (2) are symmetrically arranged on both sides of the bottom plate (1). The top of the side plate (2) is connected to a top plate (3) for fixing the discharge hole (13). The bottom of the top plate (3) is connected to a rear fixing plate (5). A screen cylinder (9) is connected to the rear fixing plate (5). Filter mesh holes (10) are evenly arranged on the screen cylinder (9). A large gear (8) is provided at the lower end of the screen cylinder (9). Two sets of connecting shafts (11) are symmetrically rotatably connected to the rear fixing plate (5). A front fixing plate (4) is connected to the bottom end of the screen cylinder (9). A motor (6) is fixedly connected to the front fixing plate (4). One set of connecting shafts (11) is fixedly connected to the output end of the motor (6). Brushes (12) are evenly arranged on the connecting shafts (11). A hopper (15) is fixedly provided on one side of the front fixing plate (4).
2. The novel sand and gravel screening device for construction engineering according to claim 1, characterized in that: The base plate (1) is provided with a fine sand container (14), which is replaceable.
3. The novel sand and gravel screening device for construction engineering according to claim 2, characterized in that: The small gear (7) meshes with the large gear (8) to drive the connecting shaft (11) and the screen cylinder (9) to rotate in opposite directions.
4. The novel sand and gravel screening device for construction engineering according to claim 3, characterized in that: One end of the sieve cylinder (9) is rotatably connected to the front fixed plate (4), and the other end of the sieve cylinder (9) is rotatably connected to the rear fixed plate (5).
5. A novel sand and gravel screening device for construction engineering according to claim 4, characterized in that: The front fixing plate (4) and the rear fixing plate (5) are respectively fixedly connected to the upper side of the base plate (1).
6. The novel sand and gravel screening device for construction engineering according to claim 5, characterized in that: The brush (12) is used to scrape the sieve cylinder (9) and the filter mesh (10) by rotating the connecting shaft (11).
7. A novel sand and gravel screening device for construction engineering according to claim 6, characterized in that: The discharge hole (13) is located on the side of the screen cylinder (9) near the rear fixing plate (5), and the lower end of the discharge hole (13) is located on the inner side of the screen cylinder (9).