A sand screening device for construction engineering
By designing a sand screening device for construction engineering, which utilizes the gravity-driven tilting screening of sand and an adjustable screen angle, the problem of poor screening effect of traditional manual screens is solved, and efficient classification and collection of materials are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN KUANGRUO CONSTRUCTION ENGINEERING CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-26
AI Technical Summary
In the current technology, the sand screening method commonly used on construction sites still uses traditional manual screens, which have a simple structure and the screened gravel is easy to mix with the ground, resulting in poor screening effect.
A sand screening device for construction engineering was designed, which adopts a box body, rollers, positioning structure and adjustment structure. It achieves effective separation of materials by tilting the sand by gravity and combining the adjustable screen angle.
It improves screening efficiency, ensures that screened materials can be effectively classified and collected, reduces the mixing of gravel with the ground, and improves the screening effect at the construction site.
Smart Images
Figure CN224405714U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of construction engineering equipment technology, and in particular to a sand screening device for construction engineering. Background Technology
[0002] In construction engineering, sand and gravel are essential raw materials for concrete preparation and masonry work. To ensure project quality, raw sand and gravel are usually screened to remove impurities, large particles, or materials that do not meet particle size requirements.
[0003] However, in the current technology, the sand screening method commonly used on construction sites is still the traditional manual sieve. Sand is thrown onto the inclined sieve by hand using shovels and other tools to classify gravel or other debris larger than the diameter of the sieve holes. However, some sieves have a relatively simple structure, and the gravel and other debris after screening and filtering are easy to mix together at the junction of the sieve and the ground, so this problem needs to be solved. Utility Model Content
[0004] The purpose of this utility model is to solve the problem in the existing technology: the sand screening method commonly used on construction sites still uses traditional manual sieves. Sand is thrown onto the inclined sieve by hand with shovels or other tools to classify gravel or other debris larger than the diameter of the sieve holes. However, some sieves have a relatively simple structure and there is a problem that gravel and other debris after screening can easily mix together at the junction of the sieve and the ground.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a sand screening device for construction engineering, comprising: a box body; multiple rollers disposed at the four corners of the bottom surface of the box body; and further comprising:
[0006] A positioning structure is disposed on the inner wall of the housing, the positioning structure comprising:
[0007] The positioning shaft and bearing are embedded in the inner wall of the housing. The outer surface of the positioning shaft is fixedly provided with a mounting plate. The surface of the mounting plate is detachably provided with a screen by bolts.
[0008] An adjustment structure is disposed on the inner wall of the housing, the adjustment structure comprising:
[0009] An inclined plate is fixedly installed on the inner wall of the box near the top.
[0010] Preferably, one side surface of the box body is provided with an impurity discharge port, and the side surface of the box body away from the impurity discharge port is provided with a sand discharge port.
[0011] The technical advantage of adopting the above-mentioned further solution is that the impurity discharge port and sand discharge port on the surface of the box are located opposite each other, which facilitates the separation of materials.
[0012] Preferably, the positioning structure further includes: a connecting block is provided inside one end of the mounting plate via a round shaft, and a telescopic rod is fixedly provided on one side surface of the connecting block.
[0013] The technical advantage of adopting the above-mentioned further solution is that the telescopic rod is connected through the connecting block inside the mounting plate, which facilitates the adjustment of the mounting plate angle.
[0014] Preferably, one end surface of the telescopic rod is provided with a mounting seat via a round shaft, and the mounting seat is fixedly mounted on the surface of the box.
[0015] The technical effect of adopting the above-mentioned further solution is that the mounting seat provides positioning for the telescopic rod, which facilitates the positioning of the connection to the connecting block.
[0016] Preferably, the bottom surface of the mounting plate is provided with springs at symmetrical locations, one end of each of the two springs is fixedly provided with a protrusion, and the two protrusions are fixedly provided at symmetrical locations on the inner wall of the box.
[0017] The technical effect of adopting the above-mentioned further solution is that by connecting the two ends of the spring to the surfaces of the mounting plate and the protrusion respectively, the mounting plate is provided with a limiting function.
[0018] Preferably, the adjustment structure further includes: sliding columns slidably embedded at symmetrical locations on the surface of the inclined plate, one end of each of the two sliding columns being movably connected to the surface of the mounting plate, and one end of each of the two sliding columns being connected by a crossbar.
[0019] The technical effect of adopting the above-mentioned further solution is that the sliding column on the surface is kept moving synchronously along the inside of the inclined plate by the crossbar, and when the sliding column contacts the mounting plate, the mounting plate tilts around the positioning axis.
[0020] Preferably, a second spring is provided symmetrically on one side of the crossbar, and one end of each of the two second springs is fixedly mounted on the surface of the inclined plate.
[0021] The technical advantage of adopting the above-mentioned further solution is that by connecting the two ends of the spring to the surfaces of the crossbar and the inclined plate respectively, it is convenient to provide a reset function for the crossbar.
[0022] Preferably, the inclined plate has a long bolt threaded into its surface, and one end of the long bolt is movably connected to the surface of the crossbar.
[0023] The technical effect of adopting the above-mentioned further solution is that when the long bolt on the surface of the rotating inclined plate is connected to the crossbar by the long bolt, the sliding column is moved.
[0024] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0025] 1. In this utility model, the rollers at the bottom of the box are used in conjunction with the braking system to throw sand onto the surface of the screen. When the sand comes into contact with the screen due to gravity, the mounting plate tilts at a slight angle around the positioning shaft. At the same time, the telescopic rod on the surface of the connecting block is used in conjunction with the mounting base to install on the inner wall of the box for initial positioning. Meanwhile, the two ends of the spring are connected to the surfaces of the mounting plate and the protrusion to reset the sand. This allows sand smaller than the holes on the screen surface to be discharged from the sand discharge port, while the screened material is discharged from the impurity discharge port, facilitating the subsequent collection of materials.
[0026] 2. In this utility model, when the long bolt on the surface of the rotating inclined plate is rotated, the long bolt is driven to contact the crossbar. With the help of the two ends of the second spring, which are respectively connected to the surface of the crossbar and the inclined plate, the crossbar is reset, causing the sliding column to move along the inner wall of the inclined plate and contact the mounting plate. This causes the mounting plate and the positioning shaft to tilt, thereby adjusting the initial tilt angle of the screen. This allows the sand to slide down the inclined surface of the screen by gravity. The larger the tilt angle, the faster the screening process, thereby improving the functionality of the device. Attached Figure Description
[0027] Figure 1 This utility model provides a side view structural diagram of a sand screening device for building engineering;
[0028] Figure 2 This utility model provides a cross-sectional structural diagram of a sand screening device for building engineering.
[0029] Figure 3 This utility model provides a partial top view of a sand screening device for building engineering.
[0030] Figure 4 This utility model proposes a sand screening device for construction engineering. Figure 3 Enlarged structural diagram at point A in the middle.
[0031] Legend:
[0032] 1. Box body; 101. Roller; 102. Impurity discharge port; 103. Sand discharge port; 104. Positioning shaft; 1041. Mounting plate; 1042. Screen; 1043. Connecting block; 1044. Telescopic rod; 1045. Mounting base; 105. Protrusion; 1051. Spring one; 106. Inclined plate; 1061. Sliding column; 1062. Crossbar; 1063. Spring two; 1065. Long bolt. Detailed Implementation
[0033] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0034] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0035] Example 1, such as Figure 1-4 As shown, this utility model provides a sand screening device for construction engineering, including: a box body 1 with multiple rollers 101 at the four corners of its bottom for easy movement of the device; a positioning structure inside the box body 1, including a positioning shaft 104 embedded in the inner wall by bearings, and an mounting plate 1041 fixedly connected to its outer surface, on which a screen 1042 is detachably mounted by bolts, facilitating quick replacement of screens 1042 of different specifications; and an adjustment structure inside the box body 1, including an inclined plate 106 fixedly set on the top inner wall for guiding the material flow to the area of the screen 1042 to improve screening efficiency.
[0036] In this embodiment, the rollers 101 at the bottom of the box 1 are used in conjunction with the braking system to throw sand onto the surface of the screen 1042. When the sand comes into contact with the screen 1042 due to gravity, the mounting plate 1041 tilts at a slight angle around the positioning shaft 104. At the same time, the telescopic rod 1044 on the surface of the connecting block 1043 is used in conjunction with the mounting base 1045 to install on the inner wall of the box 1 for initial positioning. Meanwhile, the two ends of the spring 1051 are connected to the surfaces of the mounting plate 1041 and the protrusion 105 to reset them. This allows sand smaller than the holes on the surface of the screen 1042 to be discharged from the sand discharge port 103, while the screened material is discharged from the impurity discharge port 102, facilitating the subsequent collection of materials.
[0037] Example 2, as Figure 1-4As shown, the box 1 has an impurity discharge port 102 on one side and a sand discharge port 103 on the other side, which facilitates the classification and collection of screened materials. The box 1 has a positioning structure, including a mounting plate 1041 and a connecting block 1043 connected by a round shaft. A screen 1042 is detachably mounted on the mounting plate 1041 and connected to the mounting base 1045 through a telescopic rod 1044 to form a stable support system. A spring 1051 is symmetrically provided at the bottom of the mounting plate 1041, and its end is connected to a protrusion 105 to realize the elastic buffering and reset of the mounting plate 1041. The adjustment structure includes a sliding column 1061 slidably embedded in the inclined plate 106, one end of which is connected by a crossbar 1062 and the other end is linked to the mounting plate 1041. A spring 2 1063 is provided on one side of the crossbar 1062 to provide a rebound force. A long bolt 1065 is also provided on the surface of the inclined plate 106, one end of which is connected to the crossbar 1062 to adjust the position of the sliding component and realize locking.
[0038] In this embodiment, when the long bolt 1065 on the surface of the rotating inclined plate 106 is rotated, the long bolt 1065 is driven to contact the crossbar 1062. The two ends of the spring 1063 are respectively connected to the surface of the crossbar 1062 and the inclined plate 106, providing a reset operation for the crossbar 1062. This causes the sliding column 1061 to move along the inner wall of the inclined plate 106 and contact the mounting plate 1041, causing the mounting plate 1041 to tilt relative to the positioning shaft 104. This adjusts the initial tilt angle of the screen 1042, allowing the sand to slide down the tilted surface of the screen 1042 by gravity. The larger the tilt angle, the faster the screening process, thereby improving the functionality of the device.
[0039] Working principle: During use, the rollers 101 at the bottom of the housing 1, in conjunction with the braking system, throw sand onto the surface of the screen 1042. The weight of the sand causes the mounting plate 1041 to tilt slightly around the positioning shaft 104. Simultaneously, the telescopic rod 1044 on the surface of the connecting block 1043, along with the mounting base 1045, is mounted on the inner wall of the housing 1 for initial positioning. Meanwhile, the two ends of the spring 1051 are connected to the surfaces of the mounting plate 1041 and the protrusion 105 for resetting, facilitating the discharge of sand smaller than the holes in the screen 1042 through the sand discharge port 103. This also removes the screened material from the impurity discharge area. The material is discharged through outlet 102, facilitating subsequent material collection. Additionally, when the long bolt 1065 on the surface of the rotating inclined plate 106 is rotated, it contacts the crossbar 1062. The two ends of spring 1063 are connected to the surfaces of the crossbar 1062 and the inclined plate 106 respectively, providing a reset for the crossbar 1062. This causes the sliding column 1061 to move along the inner wall of the inclined plate 106 and contact the mounting plate 1041, causing the mounting plate 1041 to tilt relative to the positioning shaft 104. This adjusts the initial tilt angle of the screen 1042, allowing sand to slide down the tilted surface of the screen 1042 under gravity. A larger tilt angle accelerates the screening process, thus improving the functionality of the device.
[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A construction site sand screening device comprising: Box (1); Multiple rollers (101) are disposed at the four corners of the bottom surface of the housing (1); characterized in that it further includes: A positioning structure is disposed on the inner wall of the housing (1), the positioning structure comprising: The positioning shaft (104) and the bearing are embedded in the inner wall of the housing (1). The outer surface of the positioning shaft (104) is fixedly provided with a mounting plate (1041). The surface of the mounting plate (1041) is provided with a screen (1042) by bolts. An adjustment structure is provided on the inner wall of the housing (1), the adjustment structure comprising: An inclined plate (106) is fixedly installed on the inner wall of the box (1) near the top.
2. A construction site sand screening device according to claim 1, characterised in that: An impurity discharge port (102) is provided on one side surface of the box (1), and a sand discharge port (103) is provided on the side surface of the box (1) away from the impurity discharge port (102).
3. The sand screening device for construction engineering according to claim 1, characterized in that: The positioning structure further includes: a connecting block (1043) is provided inside one end of the mounting plate (1041) via a round shaft, and a telescopic rod (1044) is fixedly provided on one side surface of the connecting block (1043).
4. A sand screening device for construction engineering according to claim 3, characterized in that: One end of the telescopic rod (1044) is provided with a mounting base (1045) via a round shaft, and the mounting base (1045) is fixedly mounted on the surface of the box (1).
5. A sand screening device for construction engineering according to claim 4, characterized in that: The bottom surface of the mounting plate (1041) is provided with springs (1051) at symmetrical locations. One end of each of the two springs (1051) is fixedly provided with a protrusion (105), and the two protrusions (105) are fixedly provided at symmetrical locations on the inner wall of the box (1).
6. A sand screening device for construction engineering according to claim 1, characterized in that: The adjustment structure further includes: sliding columns (1061) are slidably embedded at the symmetrical position of the inclined plate (106), one end of the two sliding columns (1061) is movably connected to the surface of the mounting plate (1041), and one end of the two sliding columns (1061) is connected by a crossbar (1062).
7. A sand screening device for construction engineering according to claim 6, characterized in that: Springs 2 (1063) are provided symmetrically on one side of the crossbar (1062), and one end of each of the two springs 2 (1063) is fixedly mounted on the surface of the inclined plate (106).
8. A sand screening device for construction engineering according to claim 7, characterized in that: The inclined plate (106) has a threaded long bolt (1065) embedded in its surface, and one end of the long bolt (1065) is movably connected to the surface of the crossbar (1062).