Sand screening device for civil engineering

Abstract

The invention discloses a civil engineering sand screening device, and relates to the technical field of civil engineering, the civil engineering sand screening device comprises a collecting box, the inner side of the collecting box is movably connected with a sand screening frame, the inner side of the sand screening frame is slidably provided with a sand screening net, the inner side of the collecting box is provided with a plurality of first extrusion blocks, and the side, close to the first extrusion blocks, of the sand screening frame is provided with an extrusion plate; the sand screening frame is provided with a paving assembly used for the sand screening net, the paving assembly comprises paving plates symmetrically arranged on the sand screening frame, a plurality of second extrusion blocks are symmetrically installed on the sand screening net, and the collecting box is provided with a feeding assembly used for the sand screening net. And the feeding assembly comprises a feeding frame arranged on the collecting box and a plurality of feeding pipes arranged at the bottom of the feeding frame. The sand screening net can shake, vertically, horizontally and rotate in all directions, the screening efficiency is improved, sand is evenly fed on the sand screening net, accumulation is reduced, and it is ensured that the sand is evenly distributed on the sand screening net.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering, and in particular to a civil engineering sand screening device. Background Art

[0002] Civil engineering is a general term for the science and technology of building various land engineering facilities. It covers a series of technical activities from surveying, design, construction to maintenance and repair, and also refers to the opposite of engineering construction. Among them, the sand screening device of civil engineering is a mechanical equipment used to screen sand and gravel. It plays an important role in the process of civil engineering construction. It separates impurities in sand and gravel through vibration or rotation to obtain sand and gravel materials that meet the requirements.

[0003] After searching, the invention patent with Chinese patent number CN116493242A discloses a civil engineering sand screening device;

[0004] Compared with the prior art, the invention patent with Chinese patent number CN116493242A has the advantages of being able to continuously screen sand and being easy to clean, while the screening material is evenly discharged and the screening effect is better.

[0005] However, in actual use, the above device screens sand through a single vibration, and the efficiency of sand screening is low. In addition, sand is directly thrown onto the screen, which is prone to accumulation, affecting the screening efficiency. Therefore, a civil engineering sand screening device is proposed, which makes the sand screening net vibrate in all directions, up and down, horizontally and rotating, so as to improve the screening efficiency, evenly throw sand onto the sand screening net and reduce accumulation. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art that the sand screening work is performed by single vibration, the sand screening efficiency is low, and the sand is directly thrown onto the screen, which easily causes accumulation, and a civil engineering sand screening device is proposed.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A civil engineering sand screening device comprises a collecting box, an inner side of the collecting box is movably connected with a sand screening frame, an inner side of the sand screening frame is slidably provided with a sand screening net, a plurality of first extrusion blocks are installed on the inner side of the collecting box, an extrusion plate is installed on the side of the sand screening frame close to the first extrusion block, a paving assembly for the sand screening net is provided on the sand screening frame, the paving assembly comprises paving plates symmetrically arranged on the sand screening frame, a plurality of second extrusion blocks are symmetrically installed on the sand screening net, a feeding assembly for the sand screening net is provided on the collecting box, and the feeding assembly comprises a feeding frame arranged on the collecting box, and a plurality of feeding pipes arranged at the bottom of the feeding frame.

[0009] The above technical solution further includes:

[0010] The side of the collection box is rotatably connected with a rotating rod, a worm gear is installed at one end of the rotating rod away from the collection box, a first servo motor is installed on the side of the collection box close to the worm gear, a worm is installed at the end of the output shaft of the first servo motor, and the worm is meshed with the worm gear.

[0011] A first telescopic rod is installed at one end of the rotating rod close to the sand screening frame, an end of the first telescopic rod away from the rotating rod is fixedly connected to the sand screening frame, a first spring is installed between the first telescopic rod and the rotating rod, a second telescopic rod is installed on the side of the sand screening frame away from the first telescopic rod, and an end of the second telescopic rod away from the sand screening frame is rotatably connected to a collecting box.

[0012] A second sliding groove is symmetrically provided on the inner side of the sand screening net, a sliding block is slidably provided on the inner side of the second sliding groove, a second spring is installed on the upper part of the sliding block, an end of the second spring away from the sliding block is fixedly connected to the side wall of the second sliding groove, and an end of the sliding block close to the second extrusion block is fixedly connected to the sand screening net.

[0013] A first sliding groove is provided on the upper part of the sand screening frame, and a second servo motor is installed on the side of the sand screening net. The output shaft end of the second servo motor extends to one end inside the first sliding groove and is installed with a threaded rod. The threaded rod is rotatably connected to the first sliding groove, and sliding plates are symmetrically slidably arranged on the inner side of the first sliding groove. Both sliding plates are threadedly connected to the threaded rod, and one end of the sliding plate away from the threaded rod is fixedly connected to the paving plate.

[0014] The second extrusion block is located on the movement track of the paving plates. The two paving plates move in opposite directions following the rotation of the threaded rod. The first extrusion block is located on the movement track of the extrusion plates.

[0015] The heights of the plurality of first extrusion blocks are all inconsistent, and the heights of the plurality of second extrusion blocks are all inconsistent, so that the shaking of the sand screening net is inconsistent, thereby improving the screening efficiency.

[0016] An L-shaped plate is installed on the upper part of the collection box, and one end of the L-shaped plate away from the collection box is fixedly connected to the feeding frame. The feeding frame is rotatably connected to a rotating bottom plate, and a diverter block is installed on the upper part of the rotating bottom plate.

[0017] A plurality of feeding troughs are provided on the upper part of the rotating bottom plate, and a plurality of feeding pipes are installed on a side of the rotating bottom plate away from the diversion block, and the feeding troughs and the feeding pipes are connected.

[0018] A first gear is installed on the side of the rotating bottom plate close to the feeding pipe, a third servo motor is installed on the side of the L-shaped plate close to the feeding pipe, a second gear is installed on the end of the output shaft of the third servo motor, and the second gear is meshed with the first gear to make the sand evenly distributed on the sand screening net.

[0019] The present invention has the following beneficial effects:

[0020] 1. In the present invention, two spreading plates are arranged to spread the sand back and forth, so that the sand on the sand screening net can be screened evenly, and the back and forth movement of the two spreading plates can make the sand screening net shake up and down to screen the sand, and at the same time, the sand screening net can be rotated, and the sand screening net can be shaken horizontally while rotating. In this way, the sand on the sand screening net is spread, and the sand screening net is shaken in all directions, up and down, horizontally and rotationally, which can significantly increase the contact opportunities between the sand and the sand screening net, thereby improving the screening efficiency and making the screening process faster and more thorough.

[0021] 2. In the present invention, by setting a feeding component, when screening sand, sand can be evenly thrown on the sand screening net to reduce accumulation, ensure that the sand is evenly distributed on the sand screening net, avoid local accumulation and the occurrence of blank areas, and make full use of the effective screening area of ​​the screen. When the sand is evenly distributed, each sieve hole has the opportunity to contact the sand and screen it, thereby improving the permeability of the sand screening net. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a first overall structural schematic diagram of a civil engineering sand screening device proposed by the present invention;

[0023] Figure 2 It is a second overall structural schematic diagram of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the first part of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the second part of the present invention;

[0026] Figure 5 for Figure 1 A schematic diagram of the structure enlargement in the middle;

[0027] Figure 6 for Figure 5 A magnified schematic diagram of the structure at B in the middle;

[0028] Figure 7 for Figure 1 A magnified schematic diagram of the structure at C in the middle;

[0029] Figure 8 for Figure 2 Enlarged schematic diagram of the structure at point D in the middle.

[0030] In the figure: 1. collecting box; 2. rotating rod; 3. worm gear; 4. first servo motor; 5. worm; 6. first telescopic rod; 7. first spring; 8. sand screening frame; 9. first extrusion block; 10. extrusion plate; 11. threaded rod; 12. sliding plate; 13. paving plate; 14. sand screening net; 15. second extrusion block; 16. second sliding groove; 17. sliding block; 18. second spring; 19. L-shaped plate; 20. feeding frame; 21. rotating bottom plate; 22. diverter block; 23. feeding trough; 24. feeding pipe; 25. first gear; 26. third servo motor; 27. second gear; 28. first sliding groove; 29. ​​second servo motor; 30. second telescopic rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1

[0033] like Figure 1-Figure 8 As shown, a civil engineering sand screening device proposed by the present invention comprises a collecting box 1, a sand screening frame 8 is movably connected to the inner side of the collecting box 1, a sand screening net 14 is slidably arranged on the inner side of the sand screening frame 8, a plurality of first extrusion blocks 9 are installed on the inner side of the collecting box 1, an extrusion plate 10 is installed on the side of the sand screening frame 8 close to the first extrusion block 9, a paving assembly for the sand screening net 14 is arranged on the sand screening frame 8, the paving assembly comprises a paving plate 13 symmetrically arranged on the sand screening frame 8, a plurality of second extrusion blocks 15 are symmetrically arranged on the sand screening net 14, a feeding assembly for the sand screening net 14 is arranged on the collecting box 1, and the feeding assembly comprises a feeding frame 20 arranged on the collecting box 1, and a plurality of feeding pipes 24 arranged at the bottom of the feeding frame 20;

[0034] The side of the collecting box 1 is rotatably connected with a rotating rod 2, a worm gear 3 is installed at one end of the rotating rod 2 away from the collecting box 1, a first servo motor 4 is installed on the side of the collecting box 1 close to the worm gear 3, a worm 5 is installed on the end of the output shaft of the first servo motor 4, the worm 5 is meshed with the worm gear 3, a first telescopic rod 6 is installed at one end of the rotating rod 2 close to the sand screening frame 8, an end of the first telescopic rod 6 away from the rotating rod 2 is fixedly connected to the sand screening frame 8, a first spring 7 is installed between the first telescopic rod 6 and the rotating rod 2, a second telescopic rod 30 is installed on the side of the sand screening frame 8 away from the first telescopic rod 6, and an end of the second telescopic rod 30 away from the sand screening frame 8 is rotatably connected to the collecting box 1;

[0035] A second sliding groove 16 is symmetrically provided on the inner side of the sand screening net 14, a sliding block 17 is slidably provided on the inner side of the second sliding groove 16, a second spring 18 is installed on the upper part of the sliding block 17, an end of the second spring 18 away from the sliding block 17 is fixedly connected to the side wall of the second sliding groove 16, an end of the sliding block 17 close to the second extruding block 15 is fixedly connected to the sand screening net 14, a first sliding groove 28 is provided on the upper part of the sand screening frame 8, a second servo motor 29 is installed on the side of the sand screening net 14, a threaded rod 11 is installed at one end of the output shaft end of the second servo motor 29 extending to the inner side of the first sliding groove 28, the threaded rod 11 is rotatably connected to the first sliding groove 28, a sliding plate 12 is symmetrically slidably provided on the inner side of the first sliding groove 28, both sliding plates 12 are threadedly connected to the threaded rod 11, and an end of the sliding plate 12 away from the threaded rod 11 is fixedly connected to the paving plate 13;

[0036] The second extrusion block 15 is on the movement trajectory of the paving plate 13, and the two paving plates 13 move in opposite directions following the rotation of the threaded rod 11. The first extrusion block 9 is on the movement trajectory of the extrusion plate 10, and the heights of multiple first extrusion blocks 9 are inconsistent, and the heights of multiple second extrusion blocks 15 are inconsistent.

[0037] In this embodiment, when sand screening is required, sand is firstly thrown onto the sand screening net 14 in the sand screening frame 8 through the feeding frame 20, and the first servo motor 4 and the second servo motor 29 are started at the same time. When the first servo motor 4 is started, the first servo motor 4 drives the worm 5 to rotate back and forth. Since the worm 5 is meshed with the worm wheel 3, the first servo motor 4 can drive the rotating rod 2 to rotate back and forth through the worm 5 and the worm wheel 3, and at the same time drive the sand screening net 14 inside the sand screening frame 8 to rotate back and forth, and when the sand screening frame 8 rotates back and forth, since the first extrusion block 9 is in the extrusion state, the first extrusion block 9 is in the extrusion state. On the motion track of the plate 10, the sand screening frame 8 squeezes the first extrusion block 9 when rotating, and at this time, the first telescopic rod 6 and the second telescopic rod 30 are driven to extend and retract, and at the same time, the first spring 7 is driven to stretch, and at this time, the sand screening frame 8 and the sand screening net 14 move horizontally, and when the extrusion plate 10 no longer squeezes the first extrusion block 9, the first spring 7 in tension is reset, and at the same time, the sand screening frame 8 and the sand screening net 14 are reset, so that the sand screening net 14 is horizontally shaken while rotating back and forth, and the heights of the multiple first extrusion blocks 9 are not consistent, and the distance of each horizontal shaking of the sand screening net 14 is also inconsistent;

[0038] When the second servo motor 29 is started, the threaded rod 11 can be driven to rotate. The force generated by the rotation of the threaded rod 11 drives the two sliding plates 12 to move back and forth along the first sliding groove 28, and drives the paving plate 13 to move back and forth at the same time. The sand on the sand screening net 14 is spread back and forth through the back and forth movement of the paving plate 13, and when the paving plate 13 moves, it will squeeze the second squeezing block 15, thereby driving the sand screening net 14 to move along the second sliding groove 16 through the sliding block 17. At this time, the second spring 18 is stretched. When the paving plate 13 no longer squeezes the second squeezing block 15, the second spring 18 is stretched. When the second extrusion block 15 is pressed, the second spring 18 is reset, and the sand screening net 14 is reset through the sliding block 17, which can drive the sand screening net 14 to shake up and down when the paving board 13 is paving. The heights of the multiple second extrusion blocks 15 are inconsistent, and the heights of the up and down shaking of the sand screening net 14 are also inconsistent. By using them together, the sand on the sand screening net 14 can be spread, and the sand screening net 14 can be shaken in all directions, up and down, horizontally and rotating, which can significantly increase the contact opportunities between the sand and the sand screening net 14, thereby improving the screening efficiency and making the screening process faster and more thorough.

[0039] Embodiment 2

[0040] like Figure 1-Figure 4 As shown, based on the first embodiment, an L-shaped plate 19 is installed on the upper part of the collecting box 1, and the end of the L-shaped plate 19 away from the collecting box 1 is fixedly connected to the feeding frame 20, and the feeding frame 20 is rotatably connected to a rotating base plate 21, and a diverter block 22 is installed on the upper part of the rotating base plate 21. A plurality of feeding troughs 23 are provided on the upper part of the rotating base plate 21, and a plurality of feeding pipes 24 are installed on the side of the rotating base plate 21 away from the diverter block 22, and the feeding troughs 23 and the feeding pipes 24 are connected to each other. A first gear 25 is installed on the side of the rotating base plate 21 close to the feeding pipe 24, and a third servo motor 26 is installed on the side of the L-shaped plate 19 close to the feeding pipe 24, and a second gear 27 is installed on the end of the output shaft of the third servo motor 26, and the second gear 27 is meshed with the first gear 25.

[0041] In this embodiment, when feeding through the feeding frame 20, the sand can enter the gap between the diverter block 22 and the feeding frame 20 through the guidance of the feeding frame 20. At this time, the sand can enter the feeding pipe 24 through the feeding trough 23, and then fall on the sand screening net 14 through the feeding pipe 24. At the same time, the third servo motor 26 is started, and the second gear 27 is driven to rotate by the third servo motor 26. Since the second gear 27 is engaged with the first gear 25, the rotating bottom plate 21 can be driven to rotate. The rotating bottom plate 21 can drive multiple feeding pipes 24 to rotate. At this time, the sand dropped from the feeding pipe 24 on the sand screening net 14 can be made more uniform, ensuring that the sand is evenly distributed on the sand screening net 14, avoiding the occurrence of local accumulation and blank areas, and making full use of the effective screening area of ​​the screen. When the sand is evenly distributed, each sieve hole has the opportunity to contact the sand and screen it, thereby improving the permeability of the sand screening net 14.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A civil engineering sand screening device, comprising a collecting box (1), characterized in that: The inner side of the collecting box (1) is movably connected to a sand screening frame (8), and a sand screening net (14) is slidably arranged on the inner side of the sand screening frame (8). A plurality of first extrusion blocks (9) are installed on the inner side of the collecting box (1), and an extrusion plate (10) is installed on the side of the sand screening frame (8) close to the first extrusion block (9). A spreading assembly for the sand screening net (14) is arranged on the sand screening frame (8), and the spreading assembly includes a spreading plate (13) symmetrically arranged on the sand screening frame (8). A plurality of second extrusion blocks (15) are symmetrically arranged on the sand screening net (14). A feeding assembly for the sand screening net (14) is arranged on the collecting box (1), and the feeding assembly includes a feeding frame (20) arranged on the collecting box (1), and a plurality of feeding pipes (24) arranged at the bottom of the feeding frame (20).

2. A civil engineering sand screening device according to claim 1, characterized in that: The side of the collection box (1) is rotatably connected to a rotating rod (2), and a worm gear (3) is installed at one end of the rotating rod (2) away from the collection box (1). A first servo motor (4) is installed on the side of the collection box (1) close to the worm gear (3). A worm (5) is installed at the end of the output shaft of the first servo motor (4), and the worm gear (5) is meshed with the worm gear (3).

3. A civil engineering sand screening device according to claim 2, characterized in that: A first telescopic rod (6) is installed at one end of the rotating rod (2) close to the sand screening frame (8); an end of the first telescopic rod (6) away from the rotating rod (2) is fixedly connected to the sand screening frame (8); a first spring (7) is installed between the first telescopic rod (6) and the rotating rod (2); a second telescopic rod (30) is installed at one side of the sand screening frame (8) away from the first telescopic rod (6); an end of the second telescopic rod (30) away from the sand screening frame (8) is rotatably connected to the collecting box (1).

4. A civil engineering sand screening device according to claim 1, characterized in that: A second sliding groove (16) is symmetrically provided on the inner side of the sand screening net (14), a sliding block (17) is slidably provided on the inner side of the second sliding groove (16), a second spring (18) is installed on the upper part of the sliding block (17), an end of the second spring (18) away from the sliding block (17) is fixedly connected to the side wall of the second sliding groove (16), and an end of the sliding block (17) close to the second extrusion block (15) is fixedly connected to the sand screening net (14).

5. A civil engineering sand screening device according to claim 1, characterized in that: A first sliding groove (28) is provided on the upper part of the sand screening frame (8), and a second servo motor (29) is installed on the side of the sand screening net (14). The output shaft end of the second servo motor (29) extends to the inner end of the first sliding groove (28) and is installed with a threaded rod (11). The threaded rod (11) is rotatably connected to the first sliding groove (28). A sliding plate (12) is symmetrically slidably arranged on the inner side of the first sliding groove (28). Both of the sliding plates (12) are threadedly connected to the threaded rod (11), and the end of the sliding plate (12) away from the threaded rod (11) is fixedly connected to the paving plate (13).

6. A civil engineering sand screening device according to claim 5, characterized in that: The second extrusion block (15) is located on the movement track of the paving plate (13), and the two paving plates (13) move in opposite directions following the rotation of the threaded rod (11), and the first extrusion block (9) is located on the movement track of the extrusion plate (10).

7. A civil engineering sand screening device according to claim 6, characterized in that: The heights of the plurality of first extrusion blocks (9) are not consistent, and the heights of the plurality of second extrusion blocks (15) are not consistent.

8. A civil engineering sand screening device according to claim 1, characterized in that: An L-shaped plate (19) is installed on the upper part of the collection box (1); one end of the L-shaped plate (19) away from the collection box (1) is fixedly connected to a feeding frame (20); the feeding frame (20) is rotatably connected to a rotating bottom plate (21); and a diverter block (22) is installed on the upper part of the rotating bottom plate (21).

9. A civil engineering sand screening device according to claim 8, characterized in that: A plurality of feeding troughs (23) are provided on the upper part of the rotating bottom plate (21), and a plurality of feeding pipes (24) are installed on a side of the rotating bottom plate (21) away from the diverter block (22), and the feeding troughs (23) and the feeding pipes (24) are interconnected.

10. A civil engineering sand screening device according to claim 9, characterized in that: A first gear (25) is installed on one side of the rotating bottom plate (21) close to the feeding pipe (24), a third servo motor (26) is installed on one side of the L-shaped plate (19) close to the feeding pipe (24), a second gear (27) is installed on the end of the output shaft of the third servo motor (26), and the second gear (27) is meshed with the first gear (25).

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