Construction sand screening device

Abstract

The utility model relates to the technical field of sand screening, and discloses a construction sand screening device which comprises a screening box, a mounting frame is arranged in the screening box, a screen plate is fixed to the bottom of the mounting frame, a baffle is fixedly mounted on the top of the mounting frame, a plurality of screen holes are formed in the screen plate and the baffle correspondingly, and the screen plate and the screen holes in the baffle are coaxially arranged. An adjusting mechanism is arranged on each of the plurality of sieve pores; by means of the adjusting mechanism, the sizes of screen holes in the screen plate and the baffle can be adjusted according to the size of needed sand, it is ensured that the screened sand can meet the granularity requirement, screen meshes of different specifications do not need to be frequently replaced, the time and labor cost needed for replacing the screen meshes are reduced, and the replacement cost of the screen meshes is reduced; the mounting frame can be pushed to bounce, sand attached to the screen holes is effectively removed through impact force and vibration, the screen holes are prevented from being blocked, screening continuity is kept, abrasion and damage of the screen plate are reduced, and the service life of the screen plate is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of sand screening, and in particular to a construction sand screening device. Background Art

[0002] In construction sites, a large amount of concrete is needed, and concrete requires fine sand to be mixed with cement, but the sand needs to be screened through a sieve before mixing with cement.

[0003] The existing Chinese patent with announcement number CN220072417U discloses a sand screening device for house construction, including a sand screening box, a side wall of the sand screening box is provided with a mounting groove, a mounting frame is provided inside the mounting groove, a screen is provided inside the mounting frame, a handle is provided on the front of the mounting frame, the mounting frame and the sand screening box are connected by a locking assembly, and positioning assemblies are provided at the four corners of the top surface of the mounting frame. Each group of positioning assemblies includes a bracket, the bottom surface of the bracket is connected to the top surface of the mounting frame, the bracket is arranged in a concave shape, a connecting rod is arranged inside the bracket, and a pressure plate is provided on the outer wall of the connecting rod, and a movable groove is provided on the pressure plate. This scheme rotates the knob, and the rotation of the knob drives the rotating plate, i.e., the threaded rod, to rotate. The rotation of the threaded rod enables the threaded rod to move in the vertical direction of the threaded hole until the threaded rod is separated from the threaded hole, and the pressure plate is flipped so that the pressure plate is away from the screen, and the fixed pressure on the screen is released, so as to realize more convenient and quick replacement of the screen.

[0004] However, the above-mentioned sand screening device has the following disadvantages: the device can replace screens with different screen holes by setting a locking component and a positioning component, but the device needs to replace screens of different specifications as needed to meet the needs of sand screening. Such frequent replacement requires a lot of time and manpower and material resources, which increases the replacement cost of the screen, and the screen cannot be moved and the sand on the screen cannot be bounced, which easily leads to blockage of the screen holes on the screen and reduces the service life of the screen.

[0005] Therefore, we propose a construction sand screening device to solve this problem.

[0006] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In order to solve the problem of not needing to frequently replace the screen and bounce the screen to prevent the screen holes from being blocked, the present application provides a construction sand screening device.

[0008] The application provides a construction sand screening device that adopts the following technical solution:

[0009] A construction sand screening device comprises a screening box, wherein a mounting frame is provided in the screening box, a sieve plate is fixedly installed at the bottom of the mounting frame, a baffle is fixedly installed on the top of the mounting frame, a plurality of sieve holes are arranged on the sieve plate and the baffle, the sieve plate and the sieve holes on the baffle are coaxially arranged, and an adjusting mechanism is arranged on the plurality of sieve holes, and the adjusting mechanism comprises a turntable, a triangular block, a limit column, a limit block and a hexagonal slot, the sieve plate is provided with a plurality of hexagonal slots near the top of the baffle, six limit blocks are slidably installed in the plurality of hexagonal slots, the tops of the six limit blocks are fixedly installed with triangular blocks, and the tops of the six triangular blocks are fixedly installed with limit columns, a turntable is rotatably installed on the top of the sieve plate, six limit slots are arranged on the top of the turntable, the limit columns slidably cooperate with the limit slots, a driving mechanism is arranged outside the plurality of turntables, and a vibration mechanism is arranged at the bottom of the mounting frame.

[0010] Preferably, slide grooves are provided on both sides of the screening box, sliders are slidably installed in the two slide grooves, the two sliders are clamped with the two sides of the installation frame, and elastic connecting components are provided between the tops of the two slide grooves and the sliders.

[0011] Preferably, the elastic connection assembly includes a connecting tube, a connecting column and a spring, the connecting tube is fixedly installed on the top of the slide groove, a spring is arranged in the connecting tube, a connecting column is arranged at the bottom of the connecting tube, the connecting column is elastically connected to the connecting tube through the spring, and the bottom end of the connecting column is fixedly connected to the top of the slider.

[0012] Preferably, the driving mechanism includes a double-axis pulley, a belt, a first gear, a second gear and a second motor, wherein a plurality of the turntables are fixedly mounted with double-axis pulleys, and another three turntables are fixedly mounted with single-axis pulleys, a belt is commonly sleeved between two adjacent double-axis pulleys and another single-axis pulley, a first gear is fixedly mounted on the bottom of the plurality of single-axis pulleys, a first mounting groove is provided on a side of the mounting frame close to the first gear, a second gear is provided in the first mounting groove, the first gear is meshed with the second gear, a second mounting groove is provided on the top of the mounting frame, a second motor is fixedly mounted in the second mounting groove, and an output end of the second motor is transmission connected to the second gear.

[0013] Preferably, the vibration mechanism includes a rotating rod, a cam and a first motor. The bottom of the mounting frame is rotatably mounted with a rotating rod, and two cams are fixedly mounted on the rotating rod. The tops of the two cams are in contact with the bottom of the mounting frame. One end of the rotating rod passes through the screening box, and a first motor is fixedly mounted on one side of the screening box. The output end of the first motor is transmission-connected to the rotating rod.

[0014] In summary, the present application includes the following beneficial technical effects: through the adjustment mechanism, the size of the sieve holes on the screen plate and the baffle can be adjusted according to the required sand size, ensuring that the sand after screening can meet the particle size requirements, without the need to frequently replace screens of different specifications, reducing the time and labor costs required for replacing the screens, and reducing the cost of replacing the screens; through the vibration mechanism, the mounting frame can be pushed to bounce, and the sand attached to the screen holes can be effectively removed through impact force and vibration, preventing the screen holes from being blocked, maintaining the continuity of screening, reducing the wear and damage of the screen plate, and extending the service life of the screen plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the application;

[0016] Figure 2 It is a schematic cross-sectional structure diagram of an embodiment of the application;

[0017] Figure 3 is a schematic side cross-sectional structural diagram of an elastic connection assembly according to an embodiment of the application;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the turntable of the application embodiment;

[0019] Figure 5 is a schematic cross-sectional structure diagram of a mounting frame of an embodiment of the application;

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the sieve plate of the application embodiment.

[0021] Explanation of the accompanying drawings: 1. Screening box; 2. Mounting frame; 3. Baffle; 4. Connecting cylinder; 5. Connecting column; 6. First motor; 7. Turntable; 8. Cam; 9. Slider; 10. Screen plate; 11. Spring; 12. Hexagonal groove; 13. Belt; 14. Double-axis pulley; 15. First gear; 16. Second motor; 17. Second gear; 18. Limit block; 19. Triangular block; 20. Limit column; 21. Turntable; 22. Limit groove. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-6 This application is described in further detail.

[0023] The present application embodiment discloses a construction sand screening device. Figure 1-6A construction sand screening device comprises a screening box 1, a mounting frame 2 is arranged in the screening box 1, a sieve plate 10 is fixedly installed at the bottom of the mounting frame 2, a baffle 3 is fixedly installed at the top of the mounting frame 2, a plurality of sieve holes are arranged on the sieve plate 10 and the baffle 3, the sieve plate 10 and the sieve holes on the baffle 3 are coaxially arranged, and an adjustment mechanism is arranged on the plurality of sieve holes, the adjustment mechanism comprises a turntable 21, a triangular block 19, a limiting column 20, a limiting block 18 and a hexagonal groove 12, a plurality of hexagonal grooves 12 are arranged on the top of the sieve plate 10 near the baffle 3, six limiting blocks 18 are slidably installed in the plurality of hexagonal grooves 12, triangular blocks 19 are fixedly installed on the tops of the six limiting blocks 18, limiting columns 20 are fixedly installed on the tops of the six triangular blocks 19, and the top of the sieve plate 10 is rotatably installed There is a turntable 21, and six limit slots 22 are arranged on the top of the turntable 21. The limit columns 20 are slidably matched with the limit slots 22. A driving mechanism is arranged outside the multiple turntables 21, and a vibration mechanism is arranged at the bottom of the installation frame 2; through the adjustment mechanism, the size of the sieve holes on the sieve plate 10 and the baffle plate 3 can be adjusted according to the required sand size to ensure that the sand after screening can meet the particle size requirements, and there is no need to frequently replace sieves of different specifications, which reduces the time and labor cost required for replacing the sieves and reduces the replacement cost of the sieves. Through the vibration mechanism, the installation frame 2 can be pushed to bounce, and the sand attached to the sieve holes can be effectively removed through impact force and vibration, so as to prevent the sieve holes from being blocked, maintain the continuity of screening, reduce the wear and damage of the sieve plate 10, and extend the service life of the sieve plate 10.

[0024] Reference Figure 1-2 Both sides of the screening box 1 are provided with slide grooves, and sliders 9 are slidably installed in the two slide grooves. The two sliders 9 are clamped with the two sides of the mounting frame 2. An elastic connecting component is provided between the top of the two slide grooves and the sliders 9, which can drive the mounting frame 2 and the screen plate 10 to move up and down.

[0025] Reference Figure 1-3 The elastic connection component includes a connecting tube 4, a connecting column 5 and a spring 11. The connecting tube 4 is fixedly installed on the top of the slide groove, and the spring 11 is arranged in the connecting tube 4. The connecting column 5 is arranged at the bottom of the connecting tube 4. The connecting column 5 is elastically connected to the connecting tube 4 through the spring 11. The bottom end of the connecting column 5 is fixedly connected to the top of the slider 9, which can drive the installation frame 2 and the screen plate 10 to reset.

[0026] Reference Figure 4-5The driving mechanism includes a double-axis pulley 14, a belt 13, a first gear 15, a second gear 17 and a second motor 16, wherein the double-axis pulleys 14 are fixedly installed outside multiple turntables 21, and single-axis pulleys are fixedly installed outside the other three turntables 21. The belt 13 is commonly sleeved between two adjacent double-axis pulleys 14 and another single-axis pulley. The first gear 15 is fixedly installed at the bottom of the multiple single-axis pulleys, a first mounting groove is provided on one side of the mounting frame 2 close to the first gear 15, a second gear 17 is provided in the first mounting groove, the first gear 15 is meshed with the second gear 17, a second mounting groove is provided on the top of the mounting frame 2, a second motor 16 is fixedly installed in the second mounting groove, and the output end of the second motor 16 is transmission-connected with the second gear 17, which can drive the multiple turntables 21 to rotate.

[0027] Reference Figure 1-2 The vibration mechanism includes a rotating rod 7, a cam 8 and a first motor 6. The rotating rod 7 is rotatably installed at the bottom of the mounting frame 2. Two cams 8 are fixedly installed on the rotating rod 7. The tops of the two cams 8 are in contact with the bottom of the mounting frame 2. One end of the rotating rod 7 passes through the screening box 1. A first motor 6 is fixedly installed on one side of the screening box 1. The output end of the first motor 6 is transmission-connected with the rotating rod 7, which can drive the mounting frame 2 and the screen plate 10 to bounce up and down.

[0028] The implementation principle of a construction sand screening device according to an embodiment of the present application is as follows: when in use, the sand to be screened is input into the screening box 1, and then a plurality of second motors 16 are started, the plurality of second motors 16 drive the second gear 17 to rotate, the second gear 17 drives the first gear 15 to rotate, the first gear 15 drives one of the turntables 21 and the single-axis pulley to rotate, the single-axis pulley drives the belt 13 to rotate, the belt 13 drives the other several double-axis pulleys 14 to rotate, thereby driving the plurality of turntables 21 to rotate together, the rotation of the turntable 21 drives the limit column 20 to move in the limit groove 22, and the limit column 20 drives the plurality of three The limiting block 18 at the bottom of the corner block 19 moves in parallel in the hexagonal groove 12, so that the size of the sieve hole can be controlled when the multiple triangular blocks 19 move in parallel, so that the sieve hole can be controlled to screen sand of different sizes. At the same time, the first motor 6 can be started, and the first motor 6 drives the rotating rod 7 to explode, and the rotating rod 7 drives the cam 8 to rotate, and the cam 8 drives the installation frame 2 to bounce upward, and the installation frame 2 drives the sand on the baffle 3 to bounce upward, first making the sand that falls into the sieve hole of the baffle 3 bounce out, and then screened again, finally, while the installation frame 2 keeps bouncing, it can prevent the sieve hole from being blocked by sand, thereby improving the screening efficiency.

[0029] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0030] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A construction sand screening device, comprising a screening box (1), characterized in that: The screening box (1) is provided with a mounting frame (2), a sieve plate (10) is fixedly mounted on the bottom of the mounting frame (2), a baffle plate (3) is fixedly mounted on the top of the mounting frame (2), a plurality of sieve holes are provided on the sieve plate (10) and the baffle plate (3), the sieve plate (10) and the sieve holes on the baffle plate (3) are coaxially arranged, and an adjustment mechanism is provided on the plurality of sieve holes, the adjustment mechanism comprising a rotating disk (21), a triangular block (19), a limiting column (20), a limiting block (18) and a hexagonal groove (12), and a plurality of hexagonal grooves (12) are provided on the top of the sieve plate (10) near the baffle plate (3). A hexagonal groove (12), six limit blocks (18) are slidably installed in the plurality of hexagonal grooves (12), a triangular block (19) is fixedly installed on the top of the six limit blocks (18), a limit column (20) is fixedly installed on the top of the six triangular blocks (19), a turntable (21) is rotatably installed on the top of the sieve plate (10), six limit grooves (22) are arranged on the top of the turntable (21), the limit column (20) and the limit groove (22) are slidably matched, a driving mechanism is arranged outside the plurality of turntables (21), and a vibration mechanism is arranged at the bottom of the mounting frame (2).

2. A construction sand screening device according to claim 1, characterized in that: Both sides of the screening box (1) are provided with slide grooves, and sliders (9) are slidably installed in the two slide grooves. The two sliders (9) are clamped with the two sides of the installation frame (2), and elastic connection components are provided between the tops of the two slide grooves and the sliders (9).

3. A construction sand screening device according to claim 2, characterized in that: The elastic connection assembly comprises a connection tube (4), a connection column (5) and a spring (11); the connection tube (4) is fixedly mounted on the top of the slide groove; the spring (11) is arranged in the connection tube (4); the connection column (5) is arranged at the bottom of the connection tube (4); the connection column (5) is elastically connected to the connection tube (4) via the spring (11); and the bottom end of the connection column (5) is fixedly connected to the top of the slide block (9).

4. A construction sand screening device according to claim 1, characterized in that: The driving mechanism comprises a double-axis pulley (14), a belt (13), a first gear (15), a second gear (17) and a second motor (16), wherein a plurality of the rotating disks (21) are fixedly mounted with double-axis pulleys (14), and another three rotating disks (21) are fixedly mounted with single-axis pulleys, a belt (13) is sleeved between two adjacent double-axis pulleys (14) and another single-axis pulley, a first gear (15) is fixedly mounted at the bottom of the plurality of single-axis pulleys, a first mounting groove is provided on one side of the mounting frame (2) close to the first gear (15), a second gear (17) is provided in the first mounting groove, the first gear (15) is meshed with the second gear (17), a second mounting groove is provided on the top of the mounting frame (2), a second motor (16) is fixedly mounted in the second mounting groove, and an output end of the second motor (16) is transmission-connected to the second gear (17).

5. A construction sand screening device according to claim 1, characterized in that: The vibration mechanism comprises a rotating rod (7), a cam (8) and a first motor (6); the bottom of the mounting frame (2) is rotatably mounted with the rotating rod (7); two cams (8) are fixedly mounted on the rotating rod (7); the tops of the two cams (8) are in contact with the bottom of the mounting frame (2); one end of the rotating rod (7) passes through the screening box (1); one side of the screening box (1) is fixedly mounted with the first motor (6); the output end of the first motor (6) is transmission-connected to the rotating rod (7).

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