Sand screening equipment for building engineering construction

Abstract

The invention discloses sand screening equipment for building engineering construction. The sand screening equipment comprises a sand screening equipment body, a feeding mechanism and a conveying mechanism; a filtering mechanism is arranged in the sand screening equipment body, and in the vertical direction, the filtering mechanism is located between a feeding port and a discharging port formed in the sand screening equipment body. The feeding mechanism is arranged on the outer side of the sand screening equipment body, one port of the feeding mechanism communicates with the feeding port, and the other port of the feeding mechanism is arranged on the ground. The conveying mechanism is arranged in the feeding mechanism and is connected with two ports of the feeding mechanism; and moving rollers are mounted at the bottoms of the sand screening equipment main body and the feeding mechanism. The operation process can be optimized, physical output of constructors is reduced, the number of the constructors is reduced, the sand screening speed is increased, the construction efficiency is improved, and the cost is saved.

Description

Technical Field

[0001] This invention relates to a sand screening device, and more particularly to a sand screening device for construction engineering, belonging to the field of construction engineering technology. Background Technology

[0002] As is generally known, construction engineering refers to the physical engineering project formed by the construction of various types of buildings and their ancillary facilities, as well as the installation of supporting lines, pipelines, and equipment. Among them, "buildings" refer to projects with roofs, beams, columns, walls, foundations, and the ability to form internal spaces to meet people's needs for production, living, learning, and public activities.

[0003] Sand sieving is an essential step in construction. It removes impurities and foreign objects like stones, improving the sand's purity and quality, and ensuring the building's lifespan and safety. If the sand used in construction contains a large amount of impurities and stones, it poses a significant risk to the building's use, potentially leading to cracks, deformation, and other problems.

[0004] Currently, most construction sites still use traditional sand sieving tools—sieves—to directly sift sand through them. During sieving, workers need to use shovels to shovel the sand onto the sieve surface for filtering. This method is slow, increases the physical exertion of workers, and requires multiple workers, which not only increases construction costs but also reduces sieving speed and overall construction efficiency. Summary of the Invention

[0005] In order to overcome the above-mentioned shortcomings of related technologies, the present invention provides a sand screening equipment for construction engineering. This equipment can optimize the operation process, reduce the physical exertion of construction workers, reduce the number of construction workers, increase the sand screening speed, speed up construction efficiency, and save costs.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A sand screening device for construction engineering includes:

[0008] The main body of the sand screening equipment has a filter mechanism inside, and in the vertical direction, the filter mechanism is located between the inlet and outlet of the sand screening equipment.

[0009] A feeding mechanism is provided on the outside of the main body of the sand screening equipment, with one port connected to the feed inlet and the other port placed on the ground.

[0010] A conveying mechanism, wherein the conveying mechanism is disposed inside the feeding mechanism and connects its two ports;

[0011] Both the main body of the sand screening equipment and the bottom of the feeding mechanism are equipped with movable rollers.

[0012] As described above, a sand screening device for construction engineering may optionally include a box-type main body shell, with an installation port at the top and a first movable roller installed on the outer side of its bottom end. The filtering mechanism is inserted into and fixed in the box-type main body shell through the installation port. The inlet and outlet are respectively located on the top and bottom sides of the box-type main body shell.

[0013] As described above, a sand screening device for construction engineering can optionally include a filtration mechanism comprising a mesh filter frame arranged at the cross-section of the box-type main body shell. The upper end of the mesh filter frame is fixedly connected to a cover plate that can be sealed to the outside of the installation port via a first elastic telescopic member. The lower end of the mesh filter frame is slidably sleeved on the top end of a second elastic telescopic member. The bottom end of the second elastic telescopic member is fixedly connected to the upper surface of a discharge plate. The discharge plate is fixedly connected to the inner side of the bottom end of the box-type main body shell. The upper surface is inclined from the inlet side to the outlet side.

[0014] The bottom of the mesh filter frame is provided with a vibrating element, which includes a fixed rotating shaft rotatably connected to the outer shell of the box-type main body, and a striking cam that can drive the mesh filter frame to move up and down is fixedly sleeved on the fixed rotating shaft.

[0015] As described above, a sand screening device for construction engineering may optionally include a locking structure at the mounting opening of the box-type main body shell that is sealed and connected to the cover plate; and a pull handle is fixedly connected to the top surface of the cover plate.

[0016] As described above, in a sand screening device for construction engineering, the first elastic telescopic member may optionally include a fixed column fixedly connected to the bottom end of the cover plate and a telescopic column inserted into the inner cavity of the bottom end of the fixed column. The top end of the telescopic column is connected to the bottom wall of the inner cavity of the fixed column through a first elastic member. The telescopic column and the fixed column are also connected by a guide member. The guide member includes a connecting slider fixedly connected to the outer side of the top end of the fixed column and a strip-shaped through groove formed on the surface of the fixed column and adapted to the connecting slider.

[0017] As described above, in a sand screening device for construction engineering, the second elastic telescopic component may include a plurality of elastic telescopic units evenly arranged around the bottom of the mesh filter frame, and the lower end of the elastic telescopic unit is connected to the box-type main body shell through at least one fixed cross plate.

[0018] The elastic telescopic unit includes a plug rod fixedly connected to the upper end of the fixed horizontal plate. A push plate and a second elastic element are sleeved on the plug rod. The two ends of the second elastic element are respectively connected to the push plate and the fixed horizontal plate. The top end of the plug rod is slidably sleeved in a positioning plate fixedly connected around the mesh filter frame, and the positioning plate is placed on the upper surface of the push plate.

[0019] As described above, a sand screening device for construction engineering may optionally include a feeding mechanism comprising a guide frame connected to the feed inlet via an upper port, the bottom of the lower port of the guide frame being in contact with the ground via a second movable roller; a guide block is fixedly connected to the inner bottom wall of the lower port of the guide frame, and a sand-shoveling plate is hinged to the outer side of the bottom of the lower port of the guide frame; both the sand-shoveling plate and the guide block have an inclined upper surface that is higher on the inside and lower on the outside, and the inner end face of the guide block is provided with a groove for accommodating the end of the conveying mechanism;

[0020] The upper port of the guide frame is fixedly connected to a first guide plate and a second guide plate extending towards the feeding mechanism and the main body of the sand screening equipment, respectively. The first guide plates are symmetrically arranged on the left and right sides of the upper port, and the inner surface of the first guide plate is inclined from the outside to the inside. The second guide plate is located on the lower side of the upper port and a baffle strip is fixedly connected to its outer side. At the same time, the inner wall of the upper port of the guide frame and the surface of the second guide plate are provided with inclined surfaces of the same inclination. The inclined surfaces are provided by the guide frame and the second guide plate.

[0021] As described above, a sand screening device for construction engineering may optionally include a conveying mechanism comprising a conveyor belt installed inside the guide frame, the conveyor belt being arranged between the upper port and the lower port, the rotating shaft of the conveyor belt being rotatably mounted on the box-type main body shell and driven by a motor fixed on the box-type main body shell, and the rotating shaft and the fixed rotating shaft being connected to the outside of the box-type main body shell via pulleys and belt drive.

[0022] As described above, a sand screening device for construction engineering may optionally include a blocking mechanism installed inside the lower port of the guide frame.

[0023] The blocking mechanism includes a hinged baffle, the upper end of which is hinged to the inner wall of the upper port of the guide frame, and a telescopic baffle inserted into the lower end cavity of the hinged baffle. The top wall of the inner cavity of the hinged baffle and the top of the telescopic baffle are connected by a third elastic element. The telescopic baffle abuts against the inner surface of the guide block. Limiting sliders are fixedly connected to both sides of the end of the telescopic baffle inserted inside the hinged baffle. The inner wall of the hinged baffle has a groove that matches the limiting slider.

[0024] As described above, in a construction sand screening device, optionally, a reset mechanism is fixedly connected to the side of the blocking mechanism facing the inside of the guide frame;

[0025] The reset mechanism includes a hinge rod, the two ends of which are hinged to the inner side of the hinge baffle and the bottom end of the reset push block, respectively. A fixed frame is fixedly connected to the top of the guide frame. A guide post is fixedly connected between the two ends inside the fixed frame. The direction of the guide post is parallel to the material feeding direction. A reset push block is slidably sleeved on the guide post. Guide sliders are fixedly connected to both sides of the reset push block. A groove adapted to the guide slider is opened on the inner wall of the fixed frame. A fourth elastic element is sleeved on the guide post on the side of the reset push block away from the hinge baffle. In a static state, the fourth elastic element causes the reset push block to be located inside the fixed frame near the hinge baffle. At this time, the hinge baffle is closed at the lower port.

[0026] Compared to related technologies, the sand screening equipment for construction engineering of this invention mainly consists of a feeding mechanism and a screening equipment body connected in sequence. Utilizing movable rollers at the bottom, the entire equipment can be moved quickly to automatically drive sand into the feeding mechanism. Then, a conveying mechanism inside the feeding mechanism automatically transfers the sand to the screening equipment body, where a filtration mechanism inside the screening equipment body completes the automatic filtration of the sand. Therefore, the sand screening equipment for construction engineering of this invention has a compact structure, reasonable design, and automated operation. It can effectively reduce the physical exertion of construction workers, reduce the number of workers required, significantly increase the sand screening speed, accelerate construction efficiency, and effectively save costs. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 and Figure 2 This is a perspective view of a sand screening device for construction engineering according to an embodiment of the present invention, viewed from different angles.

[0029] Figure 3 This is an exploded view of the main body of the sand screening equipment and the filtration mechanism in a sand screening equipment for construction engineering according to an embodiment of the present invention.

[0030] Figure 4 This is an exploded view of the feeding mechanism, conveying mechanism, blocking mechanism, and resetting mechanism in a sand screening equipment for building construction according to an embodiment of the present invention.

[0031] Figure 5 This is a perspective view of the filtration mechanism in a sand screening device for building construction, according to an embodiment of the present invention.

[0032] Figure 6 This is an exploded view of a sand screening device for building construction according to an embodiment of the present invention, which includes a mesh filter frame, a first elastic telescopic component, and a cover plate.

[0033] Figure 7 This is an exploded view of the blocking mechanism in a sand screening device for building construction according to an embodiment of the present invention.

[0034] Figure 8 This is an exploded view of the resetting mechanism in a sand screening device for building construction, according to an embodiment of the present invention.

[0035] Explanation of the meaning of the labels in the attached diagram:

[0036] 1-Main body of sand screening equipment; 11-Box-type main body shell; 11-1-Mounting port; 11-2-Feed inlet; 11-3-Discharge outlet; 111-First moving roller; 112-Interlocking structure;

[0037] 2-Filtering mechanism; 21-Mesh filter frame; 211-Positioning plate; 22-First elastic telescopic component; 221-Fixed column; 222-Telescopic column; 223-First elastic component; 224-Guide component; 2241-Connecting slider; 2242-Strip groove; 23-Cover plate; 231-Pull handle; 24-Second elastic telescopic component; 241-Elastic telescopic unit; 2411-Plug-in rod; 2412-Push plate; 2413-Second elastic component; 242-Fixed horizontal plate; 25-Discharge plate; 26-Vibrating component; 261-Fixed rotating shaft; 262-Actuating cam;

[0038] 3-Feeding mechanism; 31-Guide frame; 311-Second moving roller; 312-First guide plate; 313-Second guide plate; 314-Blocking strip; 315-Sand scraper; 316-Guide block; 3161-Groove;

[0039] 4-Conveying mechanism; 41-Conveyor belt; 411-Pulley and belt;

[0040] 5-Blocking mechanism; 51-Hinged baffle; 52-Telescopic baffle; 521-Limiting slider; 53-Third elastic element;

[0041] 6-Reset mechanism; 61-Hinged rod; 62-Fixed frame; 63-Guide post; 64-Reset push block; 641-Guide slider; 65-Fourth elastic element. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0044] Figures 1 to 8 A schematic diagram of a preferred embodiment of the present invention is shown. Figure 1 and 2 A sand screening device for construction engineering includes:

[0045] The main body of the sand screening equipment 1 has a filter mechanism 2 inside, and in the vertical direction, the filter mechanism 2 is located between the feed inlet 11-2 and the discharge outlet 11-3 opened on the main body of the sand screening equipment 1.

[0046] The feeding mechanism 3 is located on the outside of the main body 1 of the sand screening equipment, with one port connected to the feed inlet 11-2 and the other port placed on the ground.

[0047] Conveying mechanism 4 is located inside the feeding mechanism 3 and connects its two ports;

[0048] Both the main body 1 of the sand screening equipment and the bottom of the feeding mechanism 3 are equipped with movable rollers.

[0049] The movable rollers described in this embodiment of the invention facilitate the movement of the sand screening equipment body 1 and the feeding mechanism 3. Construction workers can push the sand screening equipment body 1 to slide the end of the feeding mechanism 3 against the ground, easily shoveling accumulated sand into the feeding mechanism 3. The sand inside the feeding mechanism 3 is then conveyed by the conveying mechanism 4 and guided into the sand screening equipment body 1. After automatic screening by the filtering mechanism 2, the processed sand is discharged from the outlet 11-3. This invention effectively reduces the physical exertion of construction workers, avoids the need for multiple workers to manually screen sand, increases screening speed, accelerates construction efficiency, and effectively saves costs.

[0050] Optionally, the main body 1 of the sand screening equipment provided in this application embodiment includes a box-type main body shell 11. The top of the box-type main body shell 11 is provided with an installation port 11-1, and a first moving roller 111 is installed on the outer side of its bottom end. The filter mechanism 2 is inserted into and fixed in the box-type main body shell 11 through the installation port 11-1. The feed port 11-2 and the discharge port 11-3 are respectively opened on the top side and the bottom side of the box-type main body shell 11.

[0051] With the assistance of the first moving roller 111, construction personnel only need to stand on the outer periphery of the box-type main body shell 11 and apply a pushing force to move the main body 1 of the sand screening equipment in a directional manner, so as to drive the front feeding mechanism 3 to pick up material towards the sand pile. The box-type main body shell 11 provides an independent sealed space for sand screening operation. The filter mechanism 2 is placed in it through the installation port 11-1, which helps to suppress the scattering of sand and dust during operation. By utilizing the design of the feed port 11-2 and the discharge port 11-3 with the upper and lower relative positions of the filter mechanism 2, the automatic sand screening process of sand entering and exiting the filter mechanism 2 under the action of gravity is realized.

[0052] Optionally, the filter mechanism 2 provided in this application embodiment includes a mesh filter frame 21 arranged in the cross-section of the box-type main body shell 11. The upper end of the mesh filter frame 21 is fixedly connected to a cover plate 23 that can be sealed to the outside of the mounting port 11-1 through a first elastic telescopic member 22. The lower end of the mesh filter frame 21 can also be slidably sleeved on the top end of a second elastic telescopic member 24. The bottom end of the second elastic telescopic member 24 is fixedly connected to the upper surface of the discharge plate 25. The discharge plate 25 is fixedly connected to the inner side of the bottom end of the box-type main body shell 11, and the upper surface is inclined from the feed port 11-2 side to the discharge port 11-3 side.

[0053] It is understood that the mesh filter frame 21 described in this embodiment of the invention is a filter frame with densely packed through holes inside. The specific location of the densely packed through holes is based on facilitating the filtration of sand in the automatic feeding and discharging direction. The discharge port 11-3 is a through hole opened on the outside of the main body 1 of the sand screening equipment, which allows sand to be discharged through the through hole. The inclined surface set on the surface of the discharge plate 25 can guide the filtered sand to automatically enter the discharge port 11-3 for rapid discharge.

[0054] In this embodiment of the invention, reference is made to Figure 5 The bottom of the mesh filter frame 21 is provided with a vibrating element 26. The vibrating element 26 includes a fixed rotating shaft 261 rotatably connected to the box-type main body shell 11. A striking cam 262 that can drive the mesh filter frame 21 to move up and down is fixedly sleeved on the fixed rotating shaft 261.

[0055] The striking cam 262 rotates along with the fixed rotating shaft 261. The outer contour of the striking cam 262 continuously touches the bottom of the mesh filter frame 21, driving it to reciprocate vertically, achieving a vibrating sand screening effect. Preferably, the rotation of the striking cam 262 can be linked with the conveying mechanism 4 to promote a compact and coordinated structure.

[0056] Optionally, refer to Figure 3 The box-type outer shell 11 provided in this application embodiment has a locking structure 112 at the mounting port 11-1 that is sealed and connected to the cover plate 23; a pull handle 231 is fixedly connected to the top surface of the cover plate 23.

[0057] The locking structure 112 is used to lock the cover to the mounting port 11-1, thereby sealing the top of the main body 1 of the sand screening equipment and simultaneously positioning the filter mechanism 2 inside the main body 1 of the sand screening equipment. The specific form of the locking structure 112 is not limited; it can be the edge of the boss shown in the diagram, the edge of the groove 3161, or various shapes of latches or buckles, as long as it forms a locking mechanism with the connection part of the cover, allowing for quick assembly and disassembly. The cover can be easily disassembled and installed by pulling the handle 231. During disassembly, the mesh filter frame 21 can be removed from inside the main body 1 of the sand screening equipment via the fixing post 221 and the telescopic post 222 for cleaning.

[0058] Optionally, refer to Figure 5 and Figure 6The first elastic telescopic member 22 provided in this application embodiment includes a fixed post 221 fixedly connected to the bottom end of the cover plate 23 and a telescopic post 222 inserted into the inner cavity of the bottom end of the fixed post 221. The top end of the telescopic post 222 is connected to the bottom wall of the inner cavity of the fixed post 221 through the first elastic member 223. The telescopic post 222 and the fixed post 221 are also connected by a guide member 224. The guide member 224 includes a connecting slider 2241 fixedly connected to the outer side of the top end of the fixed post 221 and a strip-shaped through groove 2242 opened on the surface of the fixed post 221 and adapted to the connecting slider 2241.

[0059] In specific implementation, the first elastic element 223 can be a first spring welded between the inner wall of the fixed column 221 and the telescopic column 222. Through the elastic force of the first spring itself, it can push the telescopic column 222 to reset. Subsequently, by the telescopic column 222 moving telescopically inside the fixed column 221, the connecting slider 2241 can move along the strip groove 2242, which serves to limit and guide the telescopic column 222.

[0060] Optionally, refer to Figure 5 The second elastic telescopic member 24 provided in this application embodiment includes a plurality of elastic telescopic units 241 evenly arranged around the bottom of the mesh filter frame 21. The lower end of the elastic telescopic unit 241 is connected to the box-type main body shell 11 through at least one fixed cross plate 242.

[0061] The elastic telescopic unit 241 includes a plug rod 2411 fixedly connected to the upper end of the fixed horizontal plate 242. A push plate 2412 and a second elastic member 2413 are sleeved on the plug rod 2411. The two ends of the second elastic member 2413 are respectively connected to the push plate 2412 and the fixed horizontal plate 242. The top end of the plug rod 2411 is slidably sleeved in the positioning plate 211 fixedly connected to the periphery of the mesh filter frame 21, and the positioning plate 211 is placed on the upper surface of the push plate 2412.

[0062] In specific implementation, the second elastic element 2413 can be a second spring welded between the push plate 2412 and the fixed horizontal plate 242. Through the elastic force of the second spring itself, it can facilitate the push plate 2412 to be reset.

[0063] More specifically, the plug rod 2411 can be set as a cylinder, and the positioning plate 211 has a round hole inside that matches the plug rod 2411. Through the round hole inside the positioning plate 211, the positioning plate 211 can slide along the surface of the plug rod 2411, reducing wear and helping the second spring to push the mesh filter frame 21 to reset.

[0064] Optionally, refer to Figure 4The feeding mechanism 3 provided in this application embodiment includes a guide frame 31 connected to the feed inlet 11-2 through the upper port. The bottom of the lower port of the guide frame 31 is in contact with the ground through the second moving roller 311. A guide block 316 is fixedly connected to the inner bottom wall of the lower port of the guide frame 31. A sand-shoveling plate 315 is hinged to the outer side of the bottom of the lower port of the guide frame 31. Both the sand-shoveling plate 315 and the guide block 316 have an inclined upper surface that is higher in the inside and lower in the outside. A groove 3161 for accommodating the end of the conveying mechanism 4 is opened on the inner end face of the guide block 316.

[0065] The second moving roller 311 and the first moving roller 111 are installed together at the front and rear ends of the entire equipment. The front and rear are defined by the direction of sand movement. The second moving roller 311, in conjunction with the first moving roller 111, enables the feeding mechanism 3 to reach the designated position and begin feeding operations efficiently and effortlessly. The sand-shoveling plate 315 ensures that the lower end of the guide frame 31 remains in contact with the ground, making it easier to shovel sand from the ground into the guide frame 31. The guide block 316 automatically guides the sand to the surface of the conveyor belt 41. Furthermore, the groove 3161 on the end surface of the guide block 316 allows the end of the conveyor belt 41 to be positioned within the groove 3161, further optimizing the structural design.

[0066] Reference Figure 3 In this embodiment of the invention, the inner wall of the upper port of the guide frame 31 is fixedly connected to a first guide plate 312 and a second guide plate 313 extending toward the feeding mechanism 3 and the main body 1 of the sand screening equipment, respectively. The first guide plate 312 is symmetrically arranged on the left and right sides of the upper port, and the inner surface of the first guide plate 312 is inclined from the outside to the inside. The second guide plate 313 is located on the lower side of the upper port and a baffle strip 314 is fixedly connected to its outer side. At the same time, the inner wall of the upper port of the guide frame 31 and the surface of the second guide plate 313 are provided with inclined surfaces of the same inclination. The inclined surfaces are provided by the guide frame 31 and the second guide plate 313.

[0067] Preferably, the inner wall of the guide frame 31 and the surface of the second guide plate 313 can be provided with inclined surfaces of the same inclination to seamlessly connect and automatically facilitate the sand to flow into the box-type main body shell 11; the cross-section of the first guide plate 312 can be specifically set as a triangle, and the two first guide plates 312 can guide the sand to fall into the mesh filter frame 21 to avoid spillage.

[0068] Optionally, refer to Figure 4The conveying mechanism 4 provided in this application embodiment includes a conveyor belt 41 installed inside the guide frame 31. The conveyor belt 41 is arranged between the upper port and the lower port. The rotating shaft of the conveyor belt 41 is rotatably installed on the box-type main body shell 11 and driven by a motor fixed on the box-type main body shell 11. The rotating shaft and the fixed rotating shaft 261 are connected to the outside of the box-type main body shell 11 through a pulley and a belt 411.

[0069] In specific implementation, the outer end of the shaft of the conveyor belt 41 is connected to the fixed shaft 261 through a pulley and a belt 411. The shaft is installed in the guide frame 31 through a bearing. The fixed shaft 261 is installed in the main body 1 of the sand screening equipment through a bearing. A striking cam 262 is fixedly sleeved at the center of the surface of the fixed shaft 261. At the same time, the outer side of the shaft of the conveyor belt 41 is connected to the drive motor, which can facilitate the control of the start of the conveyor belt 41.

[0070] Optionally, refer to Figure 7 In this embodiment of the application, a blocking mechanism 5 is also installed inside the lower port of the guide frame 31.

[0071] The blocking mechanism 5 includes a hinged baffle 51, the upper end of which is hinged to the inner wall of the upper port of the guide frame 31. A telescopic baffle 52 is inserted into the lower end cavity of the hinged baffle 51. The top wall of the inner cavity of the hinged baffle 51 and the top of the telescopic baffle 52 are connected by a third elastic element 53. The telescopic baffle 52 abuts against the inner surface of the guide block 316. Limiting sliders 521 are fixedly connected to both sides of the end of the telescopic baffle 52 inserted inside the hinged baffle 51. The inner wall of the hinged baffle 51 is provided with a groove that matches the limiting slider 521.

[0072] In this embodiment of the invention, the blocking mechanism 5 is mainly used to prevent the backflow of sand inside the feeding mechanism 3, and to assist in pushing the sand screening equipment body 1 to shovel sand into the feeding mechanism 3 for conveying and filtering. More specifically, the groove 3161 inside the bottom end of the hinged baffle 51, which is adapted to the surface size of the telescopic baffle 52, allows the telescopic baffle 52 to move telescopically within the groove 3161.

[0073] In specific implementation, the third elastic element 53 can be a third spring welded between the inner wall of the hinge baffle 51 and the top of the telescopic baffle 52. With the help of the elastic force of the third spring, the telescopic baffle 52 is pushed, so that the telescopic baffle 52 keeps in contact with the surface of the guide block 316. At the same time, the movement of the telescopic baffle 52 allows the limiting slider 521 to slide in the groove, which facilitates the limiting of the telescopic baffle 52.

[0074] Optionally, refer to Figure 8 In this embodiment of the application, a reset mechanism 6 is fixedly connected to the inside side of the blocking mechanism 5 facing the guide frame 31;

[0075] The reset mechanism 6 includes a hinge rod 61, the two ends of which are hinged to the inner side of the hinge baffle 51 and the bottom end of the reset push block 64, respectively. A fixed frame 62 is fixedly connected to the top of the guide frame 31. A guide post 63 is fixedly connected between the two ends inside the fixed frame 62. The direction of the guide post 63 is parallel to the material feeding direction. The reset push block 64 is slidably sleeved on the guide post 63. Guide sliders 641 are fixedly connected to both sides of the reset push block 64. The inner wall of the fixed frame 62 is provided with a sliding groove that matches the guide sliders 641. A fourth elastic element 65 is sleeved on the guide post 63 on the side of the reset push block 64 away from the hinge baffle 51. In the static state, the fourth elastic element 65 makes the reset push block 64 located inside the fixed frame 62 near the hinge baffle 51. At this time, the hinge baffle 51 is closed at the lower port.

[0076] Specifically, the guide post 63 can be cylindrical, and the reset push block 64 has a circular hole inside, which can reduce wear when the reset push block 64 slides along the surface of the guide post 63. When the hinge baffle 51 moves, the hinge rod 61 can push the reset push block 64 to slide. The fixed frame 62 can easily fix the function of the guide post 63, and the guide post 63 can limit and guide the movement of the reset push block 64.

[0077] In specific implementation, the fourth elastic element 65 can be a fourth spring sleeved on the surface of the guide post 63 and welded at both ends to the surface of the reset push block 64 and the inner wall of the fixed frame 62, respectively. On the one hand, the elastic force of the fourth spring itself can facilitate the reset push block 64 to reset, so that the hinged baffle 51 can prevent the sand inside the guide frame 31 from flowing back. On the other hand, the movement of the reset push block 64 can make the guide slider 641 slide along the groove, which can facilitate the limiting of the reset push block 64.

[0078] Reference Figures 1-8According to an embodiment of the present invention, a sand screening device for construction engineering is used such that, when the main body 1 of the sand screening device is pushed, the linkage guide frame 31 moves along the ground along with the sand shovel plate 315. At this time, the sand enters the interior of the guide frame 31 through the guidance of the sand shovel plate 315. As the sand pushes the hinge baffle 51 to move, the hinge rod 61 pushes the reset push block 64 to slide along the surface of the guide post 63, thereby compressing the fourth spring. When the sand enters the guide frame 31, the guide block 316 guides the sand to fall onto the surface of the conveyor belt 41. The conveyor belt 41 can transport the sand to the top of the guide frame 31. The first guide plate 312 and the second guide plate 313 guide the sand to fall into the mesh filter frame 21 for filtration. When the main body 1 of the sand screening equipment and the guide frame 31 stop moving, the elastic force of the fourth spring causes the reset push block 6452 to reset, thereby causing the hinge rod 61 to push the hinge baffle 51 to reset. The elastic force of the third spring causes the telescopic baffle 52 to abut against the surface of the guide block 316, preventing the sand on the surface of the guide block 316 from flowing back.

[0079] When sand needs to be filtered through the mesh filter frame 21, the pulley and belt 411 cause the fixed rotating shaft 261 to drive the striking cam 262 to rotate, striking the bottom of the mesh filter frame 21, thus vibrating the mesh filter frame 21 and filtering the sand. The filtered sand is then discharged through the discharge plate 25. During the vibration of the mesh filter frame 21, the positioning plate 211 moves along the surface of the plug-in rod 2411, causing the push plate 2412 to slide along the surface of the plug-in rod 2411. At the same time, the telescopic column 222 extends and retracts inside the fixed column 221. The elastic force of the first and second springs guides the mesh filter frame 21 to return to its original position. When the mesh filter frame 21 needs to be removed for cleaning, pulling the pull handle 231 causes the fixed column 221 to move the telescopic column 222 through the connecting slider 2241. The telescopic column 222 then removes the filter frame from inside the main body 1 of the sand screening equipment.

[0080] The sand screening equipment for construction engineering according to an embodiment of the present invention has the following beneficial effects:

[0081] 1. In the embodiment of the present invention, by pushing the main body 1 of the sand screening equipment, the end of the feeding mechanism 3 can slide against the ground, so as to shovel the sand accumulated on the ground into the feeding mechanism 3. At this time, the sand inside the feeding mechanism 3 will be transported by the conveying mechanism 4, guiding the sand into the main body 1 of the sand screening equipment, and the blocking mechanism 5 can prevent the sand inside the feeding mechanism 3 from flowing back.

[0082] 2. The device of this embodiment of the invention filters sand through the filtration mechanism 2, thereby effectively and conveniently filtering the sand and preventing the sand from containing stones or foreign objects, which would affect the mixing effect of concrete.

[0083] 3. The equipment in this embodiment of the invention pushes the sand screening equipment body 1 to shovel sand into the feeding mechanism 3 for conveying and filtering. Combining the above 1-3 aspects, it can effectively reduce the physical exertion of construction workers, avoid the need for multiple workers to manually screen sand, and simultaneously increase the sand screening speed, thereby accelerating construction efficiency and effectively saving costs.

[0084] 4. In the device of this embodiment, the conveyor belt 41 can drive the fixed rotating shaft 261 and the striking cam 262 to rotate. The striking cam 262 can strike the bottom of the filter mechanism 2, which can make the filter mechanism 2 vibrate and prevent sand from clogging the filter mechanism 2 and affecting the sand screening.

[0085] 5. The device of the present invention can keep the filter mechanism 2 stable when vibrating by sliding the filter mechanism 2 along the surface of the second elastic telescopic member 24 and by the telescopic column 222 telescopically moving inside the fixed column 221.

[0086] 6. In the device of this embodiment, after the filter mechanism 2 has been used for a long time, the cover can be removed from the surface of the mounting port 11-1, making it convenient for the fixing column 221 to remove the filter mechanism 2 through the telescopic column 222, and facilitating the cleaning of the filter screen on the surface of the filter mechanism 2. Based on the above aspects 4, 5, and 6, the sand screening quality and efficiency are further guaranteed.

[0087] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0088] It should be noted that in the description of this application, the terms "first" and "second" are used only for convenience in describing different components and should not be construed as indicating or implying a sequential relationship, relative importance, or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features.

[0089] The embodiments or implementation methods in this application are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0090] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are included in at least one embodiment or example of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0091] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications and equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A sand screening device for construction engineering, characterized in that, include: The main body of the sand screening equipment has a filter mechanism inside, and in the vertical direction, the filter mechanism is located between the inlet and outlet of the sand screening equipment. A feeding mechanism is provided on the outside of the main body of the sand screening equipment, with one port connected to the feed inlet and the other port placed on the ground. A conveying mechanism, wherein the conveying mechanism is disposed inside the feeding mechanism and connects its two ports; Both the main body of the sand screening equipment and the bottom of the feeding mechanism are equipped with movable rollers.

2. The sand screening equipment for construction engineering according to claim 1, characterized in that, The main body of the sand screening equipment includes a box-type main body shell. The top of the box-type main body shell has an installation port, and a first movable roller is installed on the outer side of its bottom end. The filtering mechanism is inserted into and fixed in the box-type main body shell through the installation port. The feed port and the discharge port are respectively opened on the top side and the bottom side of the box-type main body shell.

3. A sand screening device for construction engineering according to claim 2, characterized in that, The filtration mechanism includes a mesh filter frame arranged in the cross-section of the box-type main body shell. The upper end of the mesh filter frame is fixedly connected to a cover plate that can be sealed to the outside of the mounting port through a first elastic telescopic member. The lower end of the mesh filter frame can also be slidably sleeved on the top end of a second elastic telescopic member. The bottom end of the second elastic telescopic member is fixedly connected to the upper surface of the discharge plate. The discharge plate is fixedly connected to the inner side of the bottom end of the box-type main body shell. The upper surface is inclined from the inlet side to the outlet side. The bottom of the mesh filter frame is provided with a vibrating element, which includes a fixed rotating shaft rotatably connected to the outer shell of the box-type main body, and a striking cam that can drive the mesh filter frame to move up and down is fixedly sleeved on the fixed rotating shaft.

4. A sand screening device for construction engineering according to claim 3, characterized in that, The mounting opening of the box-type main body shell is provided with a locking structure that is sealed and connected to the cover plate; a pull handle is fixedly connected to the top surface of the cover plate.

5. A sand screening device for construction engineering according to claim 3, characterized in that, The first elastic telescopic member includes a fixed post fixedly connected to the bottom end of the cover plate and a telescopic post inserted into the inner cavity of the bottom end of the fixed post. The top end of the telescopic post is connected to the bottom wall of the inner cavity of the fixed post through a first elastic member. The telescopic post and the fixed post are also connected by a guide member. The guide member includes a connecting slider fixedly connected to the outer side of the top end of the fixed post and a strip-shaped through groove opened on the surface of the fixed post and adapted to the connecting slider.

6. A sand screening device for construction engineering according to claim 5, characterized in that, The second elastic telescopic component includes a plurality of elastic telescopic units evenly arranged around the bottom of the mesh filter frame, and the lower end of the elastic telescopic unit is connected to the box-type main body shell through at least one fixed cross plate. The elastic telescopic unit includes a plug rod fixedly connected to the upper end of the fixed horizontal plate. A push plate and a second elastic element are sleeved on the plug rod. The two ends of the second elastic element are respectively connected to the push plate and the fixed horizontal plate. The top end of the plug rod is slidably sleeved in a positioning plate fixedly connected around the mesh filter frame, and the positioning plate is placed on the upper surface of the push plate.

7. A sand screening device for construction engineering according to claim 6, characterized in that, The feeding mechanism includes a guide frame connected to the feed inlet via an upper port, and the bottom of the lower port of the guide frame contacts the ground via a second movable roller; a guide block is fixedly connected to the inner bottom wall of the lower port of the guide frame, and a sand-shoveling plate is hinged to the outer side of the bottom of the lower port of the guide frame; both the sand-shoveling plate and the guide block have an inclined upper surface that is higher on the inside and lower on the outside, and the inner end face of the guide block is provided with a groove for accommodating the end of the conveying mechanism; The upper port of the guide frame is fixedly connected to a first guide plate and a second guide plate extending towards the feeding mechanism and the main body of the sand screening equipment, respectively. The first guide plates are symmetrically arranged on the left and right sides of the upper port, and the inner surface of the first guide plate is inclined from the outside to the inside. The second guide plate is located on the lower side of the upper port and a baffle strip is fixedly connected to its outer side. At the same time, the inner wall of the upper port of the guide frame and the surface of the second guide plate are provided with inclined surfaces of the same inclination. The inclined surfaces are provided by the guide frame and the second guide plate.

8. A sand screening device for construction engineering according to claim 7, characterized in that, The conveying mechanism includes a conveyor belt installed inside the guide frame. The conveyor belt is arranged between the upper port and the lower port. The shaft of the conveyor belt is rotatably mounted on the box-type main body shell and driven by a motor fixed on the box-type main body shell. The shaft and the fixed shaft are connected on the outside of the box-type main body shell through pulleys and belt drive.

9. A sand screening device for construction engineering according to claim 8, characterized in that, A blocking mechanism is also installed inside the lower port of the guide frame; The blocking mechanism includes a hinged baffle, the upper end of which is hinged to the inner wall of the upper port of the guide frame, and a telescopic baffle inserted into the lower end cavity of the hinged baffle. The top wall of the inner cavity of the hinged baffle and the top of the telescopic baffle are connected by a third elastic element. The telescopic baffle abuts against the inner surface of the guide block. Limiting sliders are fixedly connected to both sides of the end of the telescopic baffle inserted inside the hinged baffle. The inner wall of the hinged baffle has a groove that matches the limiting slider.

10. A sand screening device for construction engineering according to claim 9, characterized in that, A reset mechanism is fixedly connected to the side of the blocking mechanism facing the inside of the guide frame; The reset mechanism includes a hinge rod, the two ends of which are hinged to the inner side of the hinge baffle and the bottom end of the reset push block, respectively. A fixed frame is fixedly connected to the top of the guide frame. A guide post is fixedly connected between the two ends inside the fixed frame. The direction of the guide post is parallel to the material feeding direction. A reset push block is slidably sleeved on the guide post. Guide sliders are fixedly connected to both sides of the reset push block. A groove adapted to the guide slider is opened on the inner wall of the fixed frame. A fourth elastic element is sleeved on the guide post on the side of the reset push block away from the hinge baffle. In a static state, the fourth elastic element causes the reset push block to be located inside the fixed frame near the hinge baffle. At this time, the hinge baffle is closed at the lower port.

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