A multi-stage sand screening device for construction engineering
By using stainless steel sieve plates and anti-clogging mechanisms in sand screening equipment, combined with water flushing, the problem of wet sand clogging the sieve holes is solved, improving screening efficiency and accuracy, and ensuring construction progress and material quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI ZHIHAI IND CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-06-02
AI Technical Summary
Damp sand can easily clog the screen holes, leading to low screening efficiency and reduced accuracy, which in turn affects construction progress and material quality.
Design a multi-stage sand screening device that uses stainless steel screen plates and an anti-clogging mechanism. The screen plates are driven by a motor to shake, and combined with deep water holes and an inlet pipe, water flow is used to flush the screen holes and screen plates to prevent clogging.
It effectively prevents screen clogging, improves screening efficiency and accuracy, reduces equipment maintenance time and costs, and ensures construction progress and material quality.
Smart Images
Figure CN224308928U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building engineering technology and relates to a multi-stage sand screening device for building construction. Background Technology
[0002] In the field of construction engineering, sand is an indispensable basic material, and its quality is directly related to the overall quality and safety of the project. With the continuous development of the construction industry, the demand for sand is increasing day by day. At the same time, more stringent requirements are being put forward for the uniformity of sand particle size and impurity content. In order to meet these requirements, efficient and precise sand screening equipment must be used in the construction process to screen sand in multiple stages to obtain sand of different particle size specifications to meet the diverse needs of various construction projects, such as bricklaying, plastering, and concrete pouring.
[0003] However, some existing sand screening equipment faces numerous problems in actual operation. Since sand is mostly stored outdoors, it is often damp, which easily clogs the screen openings. During screening, the sand often contains irregularly shaped particles, clay, and other impurities. When these substances move on the screen surface, they easily get stuck or adhere to the screen openings, causing blockage. Blockage severely reduces screening efficiency, significantly decreasing the amount of sand processed per unit time, thus affecting the overall construction progress. Furthermore, blocked screen openings decrease screening accuracy, resulting in sand particles that do not meet standards, impacting the quality of building materials. In addition, frequent cleaning of blocked screen openings not only consumes significant manpower, resources, and time but also increases equipment maintenance costs and downtime, further reducing equipment efficiency and economic benefits.
[0004] Therefore, a multi-stage sand screening device for construction engineering is designed to overcome the above-mentioned technical defects. Summary of the Invention
[0005] The technical problem this invention aims to solve is that damp sand easily clogs the sieve holes. During the screening process, sand often contains various irregularly shaped particles, clay, and other impurities. When these substances move on the sieve surface, they are easily stuck or adhered to the sieve holes, causing clogging. Once the sieve holes are clogged, on the one hand, the screening efficiency will be severely reduced, resulting in a significant decrease in the amount of sand processed by the equipment per unit time, which in turn affects the overall construction progress. On the other hand, clogged sieve holes will reduce the screening accuracy, causing the screened sand particle size to not meet the standards, thus affecting the quality of building materials.
[0006] This utility model discloses a multi-stage sand screening device for construction engineering, comprising a shell, with discharge openings on the left and right side walls of the shell, and guide plates fixedly connected to the bottom of the inner cavities of the two discharge openings, one side of the guide plate extending into the shell and the other side extending out of the shell, a feed pipe fixedly connected to the top of the shell and communicating with the interior of the shell, a bottom discharge opening at the bottom of the shell, a multi-stage screening mechanism disposed inside the shell, a transmission mechanism disposed on the left side wall of the shell and fixedly connected to the multi-stage screening mechanism, support legs fixedly connected near the four corners of the bottom of the shell, and an anti-clogging mechanism disposed inside the shell.
[0007] Preferably, the multi-stage screening mechanism includes screen plates disposed inside the housing. There are two screen plates, each inclined. Mounting plates are fixedly connected to the front and rear side walls of the two screen plates near their left and right sides. Support rods are symmetrically fixedly connected to the four mounting plates on opposite sides of the inner wall of the housing. Several mounting openings are provided on the front and rear side walls of the housing. The mounting openings are matched with the positions of the support rods. One end of each support rod extends into the mounting opening. A transmission plate is fixedly connected between the left side walls of the two mounting plates on the left side.
[0008] Preferably, the transmission mechanism includes a fixed plate, which is fixedly connected to the outer side of the housing. A motor is installed on the rear side wall of the fixed plate. The output end of the motor passes through the fixed plate and is movably connected to the fixed plate. A circular plate is fixedly connected to the output end of the motor. A connecting rod is movably connected to the front wall of the circular plate. A transmission opening is provided on the left side wall of the housing. One end of the connecting rod passes through the transmission opening and extends into the housing. A connecting plate is movably connected to the front side wall of the connecting rod. One side of the connecting plate is fixedly connected to the transmission plate.
[0009] Preferably, the anti-clogging mechanism includes uniformly distributed deep water passage holes. Both screen plates have uniformly distributed deep water passage holes on their front walls. The tops of both screen plates have uniformly distributed screen holes. Each screen hole has a connecting hole on its inner wall, which communicates with both the deep water passage holes and the screen holes. Both screen plates have uniformly distributed connecting pipes fixedly connected to their front walls, with the connecting pipes matching the positions of the deep water passage holes. A transfer water shell is fixedly connected between the front ends of several connecting pipes on the same screen plate, and the transfer water shell communicates with the interior of the connecting pipes. A water distribution pipe is installed between the two transfer water shells, with both ends communicating with the interior of the transfer water shell. An inlet pipe is installed on the top of the upper transfer water shell, communicating with the interior of the upper transfer water shell. The top end of the inlet pipe penetrates the shell and extends above it.
[0010] Furthermore, rollers are respectively installed on the side walls of the four support rods, and the rollers are located inside the mounting opening and in contact with the bottom of the inner cavity of the mounting opening.
[0011] Furthermore, the water inlet pipe is made of a steel wire skeleton rubber telescopic pipe.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] Through the cooperation of the screen plate, support rod, motor, screen holes, deep water passage holes, connecting holes and water inlet pipe, the motor can drive the screen plate to shake while water flows into the screen holes through the deep water passage holes and connecting holes. This can wash away the sand adhering to the screen plate and inside the screen holes, effectively solving the problem that wet sand can easily clog the screen holes. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the shell of this utility model;
[0016] Figure 3 This is a schematic diagram of the overall rear-view three-dimensional structure of this utility model;
[0017] Figure 4 This is a schematic diagram of the overall three-dimensional structure of this utility model from a bottom view;
[0018] Figure 5 This is a three-dimensional structural diagram of the sieve plate of this utility model;
[0019] Figure 6 This is a schematic diagram of the cross-sectional structure of the sieve plate of this utility model.
[0020] In the diagram: 1. Shell; 2. Screen plate; 3. Support rod; 4. Roller; 5. Mounting plate; 6. Transmission plate; 7. Connecting plate; 8. Mounting opening; 9. Fixing plate; 10. Circular plate; 11. Motor; 12. Transmission opening; 13. Discharge opening; 14. Guide plate; 15. Bottom discharge opening; 16. Support leg; 17. Feed pipe; 18. Screen hole; 19. Deep water passage hole; 20. Connecting hole; 21. Connecting pipe; 22. Transfer water shell; 23. Water distribution pipe; 24. Water inlet pipe; 25. Connecting rod. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0022] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0024] Example 1
[0025] like Figures 1-6 As shown, the device includes a housing 1. The left and right side walls of the housing 1 are respectively provided with discharge openings 13. The bottom of the inner cavity of the two discharge openings 13 is respectively fixedly connected to a guide plate 14. One side of the guide plate 14 extends into the housing 1 and the other side extends out of the housing 1. The top of the housing 1 is fixedly connected to a feed pipe 17, which is connected to the inside of the housing 1. The bottom of the housing 1 is provided with a bottom discharge opening 15. The housing 1 is provided with a multi-stage screening mechanism. The left side wall of the housing 1 is provided with a transmission mechanism, which is fixedly connected to the multi-stage screening mechanism. The bottom of the housing 1 is fixedly connected to the four corners. The inner side of the housing 1 is provided with an anti-clogging mechanism.
[0026] like Figures 2-5 As shown, the multi-stage screening mechanism includes a screen plate 2, which is disposed inside the housing 1. There are two screen plates 2, which are respectively inclined. Mounting plates 5 are fixedly connected to the front and rear side walls of the two screen plates 2 near the left and right sides. Support rods 3 are symmetrically fixedly connected to the four mounting plates 5 on the opposite side of the inner wall of the housing 1. Several mounting openings 8 are opened on the front and rear side walls of the housing 1. The mounting openings 8 are matched with the positions of the support rods 3. One end of the support rod 3 extends into the mounting opening 8. A transmission plate 6 is fixedly connected between the left side walls of the two mounting plates 5 on the left side.
[0027] like Figure 1 As shown, the transmission mechanism includes a fixed plate 9, which is fixedly connected to the outside of the housing 1. A motor 11 is installed on the rear side wall of the fixed plate 9. The output end of the motor 11 passes through the fixed plate 9 and is movably connected to the fixed plate 9. A circular plate 10 is fixedly connected to the output end of the motor 11. A connecting rod 25 is movably connected to the front wall of the circular plate 10. A transmission opening 12 is provided on the left side wall of the housing 1. One end of the connecting rod 25 passes through the transmission opening 12 and extends into the housing 1. A connecting plate 7 is movably connected to the front side wall of the connecting rod 25. One side of the connecting plate 7 is fixedly connected to the transmission plate 6.
[0028] The motor 11 in this technical solution is a common drive device on the market. It belongs to a relatively mature technology. Its installation and usage methods are common knowledge among those in the field, so they will not be described in detail in this technical solution. The transmission mechanism can drive the multi-stage screening mechanism to reciprocate left and right. The inclination of the screen plate 2 allows the sand to gradually roll downwards during the shaking until it is discharged from the housing 1. The screen plate 2 in this technical solution is made of stainless steel. Stainless steel is more stable in use and is not easy to rust. Furthermore, the screening of sand will inevitably cause wear on the screen plate 2. Therefore, the stainless steel screen plate 2 can cope well with this situation and effectively improve its service life.
[0029] Example 2
[0030] like Figure 1 and Figure 6 As shown, the anti-clogging mechanism includes uniformly distributed deep water passage holes 19. Both screen plates 2 have uniformly distributed deep water passage holes 19 on their front walls. The tops of both screen plates 2 have uniformly distributed screen holes 18. The inner walls of each screen hole 18 have connecting holes 20, which communicate with the deep water passage holes 19 and the screen holes 18 respectively. The front walls of both screen plates 2 are fixedly connected with uniformly distributed connecting pipes 21, which are positioned to match the deep water passage holes 19. A transfer water shell 22 is fixedly connected between the front ends of several connecting pipes 21 on the same screen plate 2. The transfer water shell 22 communicates with the interior of the connecting pipes 21. A water distribution pipe 23 is installed between the two transfer water shells 22, with both ends of the water distribution pipe 23 communicating with the interior of the transfer water shell 22. An inlet pipe 24 is installed on the top of the upper transfer water shell 22, communicating with the interior of the upper transfer water shell 22. The top end of the inlet pipe 24 penetrates the shell 1 and extends above the shell 1.
[0031] The anti-clogging mechanism allows water to continuously flush the screen holes 18 and the top and bottom of the screen plate 2, not only removing the sand stuck inside the screen holes 18 and on the screen plate 2, but also cleaning the sand, further improving the screening effect. In addition, it should be noted that the diameter of the screen holes 18 on the upper screen plate 2 is larger than that on the lower screen plate 2. The specific size needs to be selected according to the user's actual needs.
[0032] Rollers 4 are installed on the side walls of the four support rods 3 respectively. The rollers 4 are located inside the mounting opening 8 and are in contact with the bottom of the inner cavity of the mounting opening 8. The rollers 4 can prevent the support rods 3 from rubbing against the inner wall of the mounting opening 8 on the housing 1, while reducing noise and increasing service life. In addition, the rollers 4 need to be maintained regularly to prevent them from rusting or being damaged.
[0033] The inlet pipe 24 is made of steel wire skeleton rubber telescopic pipe. This material consists of an inner rubber layer, a cloth layer, a steel wire spiral skeleton support, and an outer rubber layer. The pipe wall is thin, lightweight and flexible, and has a corrugated shape. It has good bending and weather resistance and can withstand long-term repeated swinging. This prevents the inlet pipe 24 from breaking or being damaged when it shakes, thus effectively improving the stability of use.
[0034] During operation, the housing 1 is first moved to the desired location, then the external water pipe is connected to the inlet pipe 24, and the motor 11 is connected to the external control power supply. After debugging, it can be used normally. When needed, the motor 11 is started by the control power supply, which drives the circular plate 10 to rotate. The circular plate 10 then drives the connecting rod 25 to move back and forth. Simultaneously, the connecting rod 25 drives the connecting plate 7 and the transmission plate 6 to move back and forth. The transmission plate 6 then drives the mounting plate 5 and the screen plate 2 to move back and forth as a whole. Next, the sand to be screened is poured from the feed pipe 17 onto the upper screen plate 2. After the first screening, smaller sand particles will pass through the screen holes 18 into the lower screen plate 2, while larger sand particles will gradually roll onto the guide plate 14 until they are discharged from the housing 1. The smaller sand particles that are screened out will fall onto the lower screen plate 2. Finally, they will pass through the lower screen. Fine sand particles screened by plate 2 will fall directly to the bottom of shell 1 through the bottom discharge opening 15, while smaller sand particles will roll onto the guide plate 14 on the left side until they are discharged outside shell 1. The above operation can perform multi-stage screening of sand. In addition, when the sand is dirty or the screen holes 18 are blocked, water can be transported to the inlet pipe 24 through an external water pipe, and then enter the upper intermediate water shell 22. The water in the intermediate water shell 22 will flow into the water passage deep hole 19 through the connecting pipe 21, and then into the screen holes 18 through multiple connecting holes 20. In this way, the water can wash away the sand adhering to the screen plate 2 and the screen holes 18, and can clean the sand well. In addition, since the upper intermediate water shell 22 and the lower intermediate water shell 22 are connected by the water distribution pipe 23, the lower screen plate 2 has the same effect as the upper screen plate 2, which can effectively solve the problem of easy blockage of the screen holes 18.
[0035] The descriptions of the orientation and relative positional relationships of the structure in this utility model, such as descriptions of front, back, left, right, up, and down, do not constitute a limitation on this utility model, but are merely for the convenience of description.
Claims
1. A multi-stage sand screening device for construction engineering, comprising a shell (1), characterized in that: The shell (1) has discharge openings (13) on its left and right side walls respectively. The bottom of the inner cavity of the two discharge openings (13) is fixedly connected to guide plates (14). One side of the guide plate (14) extends into the shell (1) and the other side extends out of the shell (1). The top of the shell (1) is fixedly connected to a feed pipe (17). The feed pipe (17) is connected to the inside of the shell (1). The bottom of the shell (1) has a bottom discharge opening (15). The shell (1) is equipped with a multi-stage screening mechanism. The left side wall of the shell (1) is equipped with a transmission mechanism. The transmission mechanism is fixedly connected to the multi-stage screening mechanism. The bottom of the shell (1) is fixedly connected to the four corners. The shell (1) is equipped with an anti-blocking mechanism.
2. The multi-stage sand screening equipment for construction engineering as described in claim 1, characterized in that: The multi-stage screening mechanism includes a screen plate (2), which is disposed inside the housing (1). There are two screen plates (2) and they are respectively inclined. Mounting plates (5) are fixedly connected to the front and rear side walls of the two screen plates (2) near the left and right sides. Support rods (3) are symmetrically fixedly connected to the four mounting plates (5) and the opposite side of the inner wall of the housing (1). Several mounting openings (8) are opened on the front and rear side walls of the housing (1). The mounting openings (8) are matched with the positions of the support rods (3). One end of the support rod (3) extends into the mounting opening (8). A transmission plate (6) is fixedly connected between the left side walls of the two mounting plates (5) on the left side.
3. The multi-stage sand screening equipment for construction engineering according to claim 2, characterized in that: The transmission mechanism includes a fixed plate (9), which is fixedly connected to the outside of the housing (1). A motor (11) is installed on the rear side wall of the fixed plate (9). The output end of the motor (11) passes through the fixed plate (9) and is movably connected to the fixed plate (9). A circular plate (10) is fixedly connected to the output end of the motor (11). A connecting rod (25) is movably connected to the front wall of the circular plate (10). A transmission opening (12) is provided on the left side wall of the housing (1). One end of the connecting rod (25) passes through the transmission opening (12) and extends into the housing (1). A connecting plate (7) is movably connected to the front side wall of the connecting rod (25). One side of the connecting plate (7) is fixedly connected to the transmission plate (6).
4. The multi-stage sand screening equipment for construction engineering according to claim 2, characterized in that: The anti-clogging mechanism includes uniformly distributed deep water passage holes (19). Both screen plates (2) have uniformly distributed deep water passage holes (19) on their front walls. The tops of both screen plates (2) have uniformly distributed screen holes (18). The inner walls of each screen hole (18) have connecting holes (20). The connecting holes (20) are connected to the deep water passage holes (19) and the inside of the screen holes (18), respectively. The front walls of both screen plates (2) are fixedly connected with uniformly distributed connecting pipes (21). The connecting pipes (21) are positioned to match the deep water passage holes (19). A transfer water shell (22) is fixedly connected between the front ends of several connecting pipes (21) on the sieve plate (2). The transfer water shell (22) is connected to the interior of the connecting pipes (21). A water distribution pipe (23) is installed between two transfer water shells (22). The two ends of the water distribution pipe (23) are connected to the interior of the transfer water shell (22). A water inlet pipe (24) is installed on the top of the transfer water shell (22) on the upper side. The water inlet pipe (24) is connected to the interior of the transfer water shell (22) on the upper side. The top end of the water inlet pipe (24) penetrates the shell (1) and extends to the top of the shell (1).
5. A multi-stage sand screening device for construction engineering according to claim 2, characterized in that: Rollers (4) are installed on the side walls of the four support rods (3), and the rollers (4) are located inside the mounting opening (8) and in contact with the bottom of the inner cavity of the mounting opening (8).
6. A multi-stage sand screening device for construction engineering according to claim 4, characterized in that: The water inlet pipe (24) is made of steel wire skeleton rubber expansion pipe.