Sand screening device for constructional engineering

Abstract

The utility model discloses a constructional engineering sand screening device, which belongs to the technical field of constructional engineering and comprises a movable frame with a handrail and a screening frame, the screening frame is positioned on the inner side of the movable frame and is elastically connected with the movable frame through a connector, a hopper is fixedly erected at the upper end of the movable frame, a screening plate is arranged in the screening frame, and the screening plate is connected with the movable frame through a connector. A material guiding plate matched with the screening plate is arranged on one side of the movable frame, a discharging opening is formed in the side, away from the material guiding plate, of the screening frame, a vibrator used for driving the screening frame to vibrate is fixedly arranged on one side of the movable frame, and an opening and closing mechanism is arranged in the hopper. By arranging the opening and closing mechanism, on one hand, in the vibration screening process, the rotating plate is driven by the transmission assembly to rotate in a reciprocating mode, material accumulation can be effectively avoided, and on the other hand, on the other hand, under the condition that screening is stopped, a worker can manually control rotation of the rotating plate to seal the material falling hole through structures such as a lifting block, a spline shaft and a spline sleeve.

Description

Technical Field

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

[0002] In construction engineering, sand is an indispensable basic material, and its quality has a crucial impact on the overall project quality. Before actual use, sand is usually screened using a sand screening device to remove impurities and particles that do not meet the particle size requirements, ensuring the uniformity and stability of the building materials.

[0003] Most sand screening devices use a screen plate and a vibrator to drive the screen plate. Material falls onto the screen plate under gravity through the hopper, and then the screen plate vibrates to complete the screening. However, in actual operation, the screen is prone to clogging at the output end of the hopper (or due to moisture on the screen, adhesion and accumulation of blockage), which affects the screening effect. When screening is not required, it is difficult to close the hopper, and material continues to be discharged from the hopper, resulting in material waste and increased subsequent workload. Utility Model Content

[0004] The purpose of this utility model is to provide a sand screening device for construction engineering in order to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sand screening device for construction engineering includes a mobile frame with handrails and a screening frame. The screening frame is located inside the mobile frame and is elastically connected to the mobile frame via a connector. A hopper is fixedly mounted on the upper end of the mobile frame. A screen plate is provided inside the screening frame. A guide plate that cooperates with the screen plate is provided on one side of the mobile frame. A discharge port is opened on the side of the screening frame away from the guide plate. A vibrator for driving the screening frame to vibrate is fixedly mounted on one side of the mobile frame. A support rod is fixedly mounted on the upper end of the mobile frame. An opening and closing mechanism is provided inside the hopper.

[0007] As a further description of the above technical solution:

[0008] The opening and closing mechanism includes a rotating shaft rotatably disposed inside the support rod and a fixed plate disposed inside the output end of the hopper. The fixed plate has two symmetrically opened discharge holes. A rotating plate is rotatably disposed on the upper end of the fixed plate via a driven shaft. The rotating plate is in contact with the upper surface of the fixed plate. The lower end of the driven shaft movably penetrates into the support rod and is provided with a first bevel gear. A second bevel gear is provided at one end of the rotating shaft and meshes with the first bevel gear. A transmission component that cooperates with the rotating shaft is provided on one side of the mobile frame.

[0009] As a further description of the above technical solution:

[0010] The transmission assembly includes a deflection plate and a mounting plate fixedly disposed on one side of the mobile frame. A guide rod is fixedly disposed at the lower end of one side of the deflection plate. A guide groove that cooperates with the guide rod is opened on the surface of the mounting plate. A connecting piece that cooperates with the rotating shaft is disposed at the upper end of one side of the deflection plate.

[0011] As a further description of the above technical solution:

[0012] The connector includes a lifting block and a splined shaft and a splined sleeve that cooperate with each other. One end of the splined shaft is connected to the rotating shaft via a coupling. The outer surface of the splined sleeve is provided with a threaded ring and is threadedly connected to the deflection plate. The upper end of the deflection plate is provided with an embedded groove that cooperates with the lifting block. The lower end of the lifting block is fixedly provided with a limiting rod. The bottom surface of the embedded groove is provided with a through hole for the limiting rod to move through. The surface of the splined sleeve is provided with a limiting groove that cooperates with the limiting rod.

[0013] As a further description of the above technical solution:

[0014] A handwheel is fixedly provided at one end of the spline sleeve, a handle is fixedly provided at the upper end of the lifting block, and two locking blocks are symmetrically provided at the lower end of the lifting block. Two locking slots that cooperate with the locking blocks are symmetrically opened on the bottom surface of the embedding groove and the upper surface of the deflection plate.

[0015] As a further description of the above technical solution:

[0016] Two arc-shaped notches are symmetrically provided at the edge of the rotating plate to match the material discharge hole, and an auxiliary rod is fixedly provided inside the arc-shaped notch.

[0017] As a further description of the above technical solution:

[0018] Two side rods are symmetrically fixed on the side of the rotating plate, and two stop rods that cooperate with the side rods are symmetrically fixed inside the hopper.

[0019] As a further description of the above technical solution:

[0020] The card block is made of magnetic material, and the deflection plate is made of iron-containing material.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0022] In this invention, by setting an opening and closing mechanism, on the one hand, during the vibrating screening process, the rotating plate reciprocates under the drive of the transmission component, which can effectively prevent material accumulation and blockage of the discharge hole; on the other hand, when screening stops, the operator can manually control the rotation of the rotating plate to close the discharge hole through structures such as lifting blocks, spline shafts and spline sleeves. Attached Figure Description

[0023] Figure 1 A first-view structural schematic diagram of the sand screening device provided according to an embodiment of the present invention is shown;

[0024] Figure 2 A second-view structural schematic diagram of the sand screening device provided according to an embodiment of the present invention is shown;

[0025] Figure 3 A schematic diagram of the internal structure of the hopper according to an embodiment of the present invention is shown;

[0026] Figure 4 A partial structural schematic diagram of the opening and closing mechanism provided according to an embodiment of the present utility model is shown;

[0027] Figure 5 A schematic diagram of the fixing plate structure provided according to an embodiment of the present utility model is shown;

[0028] Figure 6 A schematic diagram of the transmission assembly structure according to an embodiment of the present utility model is shown;

[0029] Figure 7 A partial structural schematic diagram of the transmission assembly provided according to an embodiment of the present utility model is shown;

[0030] Figure 8 A schematic diagram of the connector structure according to an embodiment of the present utility model is shown;

[0031] Figure 9 A schematic diagram of the mounting plate structure provided according to an embodiment of the present utility model is shown;

[0032] Figure 10 A schematic diagram of the lifting block, limiting rod, and locking block structure provided according to an embodiment of the present utility model is shown;

[0033] Figure 11 A schematic diagram of the deflection plate structure according to an embodiment of the present invention is shown;

[0034] Figure 12 The present invention provides an embodiment of the present invention. Figure 11 Schematic diagram of the structure at point A in the middle.

[0035] Legend: 1. Mobile frame; 2. Hopper; 3. Screening frame; 4. Connector; 5. Screen plate; 6. Guide plate; 7. Vibrator; 8. Support rod; 9. Mounting plate; 10. Fixing plate; 11. Rotating plate; 12. Stop bar; 13. Driven shaft; 14. First bevel gear; 15. Auxiliary rod; 16. Side rod; 17. Drop hole; 18. Deflection plate; 19. Guide rod; 20. Rotating shaft; 21. Second bevel gear; 22. Splined shaft; 23. Splined sleeve; 24. Limiting groove; 25. Handwheel; 26. Guide groove; 27. Lifting block; 28. Locking block; 29. ​​Limiting rod; 30. Embedding groove; 31. Locking slot. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0037] like Figures 1-12 As shown, a sand screening device for construction engineering includes a mobile frame 1 with handrails and a screening frame 3, allowing workers to easily grip the handrails and move the mobile frame 1 to place the sand screening device in the work area. The screening frame 3 is located inside the mobile frame 1 and is elastically connected to the mobile frame 1 via connectors 4. One end of the connector 4 is fixedly connected to the mobile frame 1, and the other end of the connector 4 is fixedly connected to the side of the screening frame 3. There are multiple connectors 4. A hopper 2 is fixedly mounted on the upper end of the mobile frame 1. The hopper 2 is used to hold materials and guide them to the screen plate 5. The screening frame 3 has a screen plate 5 inside, which is inclined. A screen plate 5 is located on one side of the mobile frame 1. The guide plate 6 cooperates with the screen plate 5. The screening frame 3 has a discharge port on the side away from the guide plate 6. When screening materials, some material particles with a diameter smaller than the screen holes of the screen plate 5 fall through the screen plate 5 to the screening frame 3, then slide down along the screening frame 3 and are discharged from the discharge port. Other material particles with a diameter larger than the screen holes of the screen plate 5 remain on the screen plate 5 and slide down along the screen plate 5, then are discharged along the guide plate 6. A vibrator 7 for driving the screening frame 3 to vibrate is fixed on one side of the mobile frame 1. When the vibrator 7 is started, it drives the screening frame 3 to vibrate, thereby improving the screening effect of the material. A support rod 8 is fixed on the upper end of the mobile frame 1. The hopper 2 is equipped with an opening and closing mechanism.

[0038] Furthermore, the opening and closing mechanism includes a rotating shaft 20 rotatably disposed inside the support rod 8 and a fixed plate 10 disposed inside the output end of the hopper 2. The fixed plate 10 has two symmetrically arranged discharge holes 17, facilitating material to fall through the discharge holes 17 onto the upper surface of the screen plate 5. A rotating plate 11 is rotatably disposed on the upper end of the fixed plate 10 via a driven shaft 13. The rotating plate 11 is in contact with the upper surface of the fixed plate 10, and its rotation can close the two discharge holes 17. The lower end of the driven shaft 13 movably penetrates into the support rod 8 and is provided with a first bevel gear 14. The rotating shaft 20... The end is provided with a second bevel gear 21 that meshes with the first bevel gear 14. A transmission assembly that cooperates with the rotating shaft 20 is provided on one side of the movable frame 1. Under the action of the transmission assembly, the rotating shaft 20 will rotate, and the rotation of the rotating shaft 20 will drive the second bevel gear 21 to rotate. The meshing action of the second bevel gear 21 and the first bevel gear 14 will drive the driven shaft 13 to rotate, and the rotation of the driven shaft 13 will drive the rotating plate 11 to rotate. During use, the transmission assembly will drive the rotating shaft 20 to rotate reciprocally, thus causing the rotating plate 11 to rotate reciprocally (see attached instruction manual). Figure 3 When the rotating plate 11 swings back and forth, it can effectively prevent material accumulation from causing blockage of the discharge hole 17.

[0039] Furthermore, the transmission assembly includes a deflection plate 18 and a mounting plate 9 fixedly mounted on one side of the mobile frame 1. A guide rod 19 is fixedly mounted on the lower end of one side of the deflection plate 18. A guide groove 26 that mates with the guide rod 19 is formed on the surface of the mounting plate 9. A connecting piece that mates with the rotating shaft 20 is provided on the upper end of one side of the deflection plate 18. During use, the vibrator 7 will drive the screening frame 3 to vibrate up and down. The up and down movement of the screening frame 3 will drive the mounting plate 9 to move up and down (see attached instruction manual). Figure 2 Included with instruction manual Figure 6 During the up-and-down movement of the mounting plate 9, the deflection plate 18 will reciprocate due to the cooperation between the guide rod 19 and the guide groove 26, which in turn will drive the rotating shaft 20 to reciprocate through the connecting parts.

[0040] Furthermore, the connecting components include a lifting block 27 and a splined shaft 22 and a splined sleeve 23 that cooperate with each other. One end of the splined shaft 22 is connected to the rotating shaft 20 via a coupling. The outer surface of the splined sleeve 23 is provided with a threaded ring and is threadedly connected to the deflection plate 18. The upper end of the deflection plate 18 is provided with an embedded groove 30 that cooperates with the lifting block 27. The lower end of the lifting block 27 is fixedly provided with a limiting rod 29. The bottom surface of the embedded groove 30 is provided with a through hole for the limiting rod 29 to move through. The surface of the splined sleeve 23 is provided with a limiting groove 24 that cooperates with the limiting rod 29. When it is necessary to temporarily stop the screening... When the time is set, the output end of hopper 2 needs to be closed. The operator first pulls the lifting block 27 upward, so that the limiting rod 29 disengages from the limiting groove 24, releasing the limitation on the rotation of spline sleeve 23. Then, the spline sleeve 23 is driven to rotate. The rotation of spline sleeve 23 drives the spline shaft 22 to rotate, which in turn drives the rotating shaft 20 to rotate. The rotation of rotating shaft 20 is transmitted through the meshing of the second bevel gear 21 and the first bevel gear 14, which drives the driven shaft 13 to rotate. The rotation of driven shaft 13 drives the rotating plate 11 to rotate, and the rotation of rotating plate 11 closes the two discharge holes 17.

[0041] Furthermore, a handwheel 25 is fixedly provided at one end of the spline sleeve 23, which is convenient for the operator to rotate the spline sleeve 23 by operating the handwheel 25. A handle is fixedly provided at the upper end of the lifting block 27, which is convenient for the operator to hold the handle for operation. Two locking blocks 28 are symmetrically provided on the lower end face of the lifting block 27. Two locking grooves 31 that cooperate with the locking blocks 28 are symmetrically opened on the bottom surface of the embedding groove 30 and the upper end face of the deflection plate 18. When the lifting block 27 is located in the embedding groove 30, the two locking blocks 28 are engaged with the locking grooves 31 on the bottom surface of the embedding groove 30. When the lifting block 27 is lifted to the outside of the embedding groove 30, the two locking blocks 28 are engaged with the locking grooves 31 on the upper end face of the deflection plate 18.

[0042] Furthermore, two arc-shaped notches are symmetrically formed at the edge of the rotating plate 11 to mate with the material discharge hole 17. An auxiliary rod 15 is fixedly installed inside the arc-shaped notch, and the auxiliary rod 15 is located directly above the material discharge hole 17 (see attached instruction manual). Figure 3 As the rotating plate 11 reciprocates, it drives the auxiliary rod 15 to rotate, thereby agitating the material and further preventing the accumulation of material from clogging the discharge hole 17.

[0043] Furthermore, two side rods 16 are symmetrically fixed on the side of the rotating plate 11, and two stop rods 12 that cooperate with the side rods 16 are symmetrically fixed inside the hopper 2. When the rotating plate 11 is rotated by driving the spline sleeve 23 to rotate, the rotation of the rotating plate 11 will drive the side rods 16 to rotate until the side rods 16 abut against the stop rods 12. At this time, the continued rotation of the spline sleeve 23 is limited, which means that the rotating plate 11 has completed the sealing of the discharge hole 17.

[0044] Furthermore, the card block 28 is made of magnetic material, and the deflection plate 18 is made of iron-containing material. Under the action of magnetic attraction, the stability of the engagement between the card block 28 and the card slot 31 is ensured.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sand screening device for construction engineering, comprising a mobile frame (1) with handrails and a screening frame (3), wherein the screening frame (3) is located inside the mobile frame (1) and is elastically connected to the mobile frame (1) via a connector (4), and a hopper (2) is fixedly mounted on the upper end of the mobile frame (1), characterized in that, The screening frame (3) is provided with a screen plate (5) inside. The mobile frame (1) is provided with a guide plate (6) that cooperates with the screen plate (5) on one side. The screening frame (3) is provided with a discharge port on the side away from the guide plate (6). The mobile frame (1) is fixedly provided with a vibrator (7) for driving the screening frame (3) to vibrate. The upper end of the mobile frame (1) is fixedly provided with a support rod (8). The hopper (2) is provided with an opening and closing mechanism inside.

2. The sand screening device for construction engineering according to claim 1, characterized in that, The opening and closing mechanism includes a rotating shaft (20) rotatably disposed inside the support rod (8) and a fixed plate (10) disposed inside the output end of the hopper (2). The fixed plate (10) has two symmetrically opened dropping holes (17). The upper end of the fixed plate (10) is provided with a rotating plate (11) rotatably disposed through a driven shaft (13). The rotating plate (11) is in contact with the upper surface of the fixed plate (10). The lower end of the driven shaft (13) movably penetrates into the support rod (8) and is provided with a first bevel gear (14). One end of the rotating shaft (20) is provided with a second bevel gear (21) that meshes with the first bevel gear (14). The side of the moving frame (1) is provided with a transmission component that cooperates with the rotating shaft (20).

3. A sand screening device for construction engineering according to claim 2, characterized in that, The transmission assembly includes a deflection plate (18) and a mounting plate (9) fixedly disposed on one side of the mobile frame (1). A guide rod (19) is fixedly disposed on the lower end of one side of the deflection plate (18). A guide groove (26) that cooperates with the guide rod (19) is opened on the surface of the mounting plate (9). A connecting piece that cooperates with the rotating shaft (20) is disposed on the upper end of one side of the deflection plate (18).

4. A sand screening device for construction engineering according to claim 3, characterized in that, The connector includes a lifting block (27) and a splined shaft (22) and a splined sleeve (23) that cooperate with each other. One end of the splined shaft (22) is connected to the rotating shaft (20) through a coupling. The outer surface of the splined sleeve (23) is provided with a threaded ring and is threadedly connected to the deflection plate (18). The upper end of the deflection plate (18) is provided with an embedded groove (30) that cooperates with the lifting block (27). The lower end of the lifting block (27) is fixedly provided with a limiting rod (29). The bottom surface of the embedded groove (30) is provided with a through hole for the limiting rod (29) to move through. The surface of the splined sleeve (23) is provided with a limiting groove (24) that cooperates with the limiting rod (29).

5. A sand screening device for construction engineering according to claim 4, characterized in that, A handwheel (25) is fixedly provided at one end of the spline sleeve (23), a handle is fixedly provided at the upper end of the lifting block (27), two locking blocks (28) are symmetrically provided at the lower end of the lifting block (27), and two locking slots (31) that cooperate with the locking blocks (28) are symmetrically opened on the bottom surface of the embedded groove (30) and the upper end surface of the deflection plate (18).

6. A sand screening device for construction engineering according to claim 2, characterized in that, The rotating plate (11) has two symmetrical arc-shaped notches at its edge that match the material drop hole (17), and an auxiliary rod (15) is fixedly installed inside the arc-shaped notch.

7. A sand screening device for construction engineering according to claim 2, characterized in that, The rotating plate (11) is symmetrically fixed with two side rods (16) on its side, and the hopper (2) is symmetrically fixed with two stop rods (12) that cooperate with the side rods (16) inside.

8. A sand screening device for construction engineering according to claim 5, characterized in that, The card block (28) is made of magnetic material, and the deflection plate (18) is made of iron-containing material.

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