Building construction material screening device

Abstract

The utility model relates to the technical field of material screening, in particular to a building construction material screening device. According to the technical scheme, the screening device comprises a screening barrel, a hopper is fixedly installed on the upper surface of the screening barrel, a feeding pipe is fixedly connected to the position, close to the rear surface, of the lower surface of the hopper, the tail end of the feeding pipe is fixedly connected to the upper surface of the screening barrel, and a feeding opening is formed in the position, below the feeding pipe, of the upper surface of the screening barrel; a screening net is fixedly installed in the screening barrel, a hollow shaft is rotationally installed on the lower surface of the screening barrel, a rotating disc is fixedly connected to the end, located in the screening barrel, of the hollow shaft, and a communicating opening is formed in the position, close to the front surface, of the upper surface of the rotating disc. When materials for building construction are screened through the screen, the feeding amount of the materials on the screen can be controlled, accumulation of the materials on the screen is avoided, the load of the screen is reduced, the service life of the screen is prolonged, meanwhile, blocking of the screen is reduced, and the material screening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material screening, in particular to a construction material screening device. Background Art

[0002] During the construction process, sand, gravel and other materials need to be screened through screening devices to obtain construction materials of uniform size and that meet construction requirements.

[0003] At present, when screening construction materials through a screen, too much material is often added to the screen, resulting in material accumulation, which increases the load of the screen and reduces the service life of the screen. At the same time, the accumulated material is also prone to cause the screen to be blocked, reducing the material screening efficiency. For this reason, we propose a construction material screening device. Utility Model Content

[0004] The utility model aims to provide a construction material screening device, which has the advantages of being able to control the amount of material added to the screen when screening construction materials through the screen, avoiding the accumulation of materials on the screen, reducing the load of the screen, extending the service life of the screen, and reducing the clogging of the screen, thereby improving the material screening efficiency. It solves the problem that when screening construction materials through the screen, too much material is often added to the screen, resulting in material accumulation, which increases the load of the screen and reduces the service life of the screen. At the same time, the accumulated material is also likely to cause clogging of the screen, thereby reducing the material screening efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a construction material screening device, comprising a screening drum, a hopper is fixedly installed on the upper surface of the screening drum, a feed pipe is fixedly connected to the lower surface of the hopper near the rear surface, and the end of the feed pipe is fixedly connected to the upper surface of the screening drum, a feed port is provided on the upper surface of the screening drum below the feed pipe, a screen is fixedly installed inside the screening drum, a hollow shaft is rotatably installed on the lower surface of the screening drum, a turntable is fixedly connected to one end of the hollow shaft located inside the screening drum, a connecting port is provided on the upper surface of the turntable near the front surface, and a pushing scraper is fixedly installed on the outer surface of the hollow shaft above the screen.

[0006] Preferably, a rotating motor is fixedly installed on one side of the lower surface of the screening drum, a bevel gear A is fixedly connected to the end of the output shaft of the rotating motor, a bevel gear B is fixedly sleeved on the outer surface of the hollow shaft, and the bevel gear A and the bevel gear B are meshed.

[0007] Preferably, a purge pipe is fixedly connected to a side of the outer surface of the hollow shaft away from the push scraper, and the purge pipe is located below the screen, and an air outlet is provided on the upper surface of the purge pipe.

[0008] Preferably, one end of the hollow shaft located outside the screening cylinder is rotatably connected to a compressed air pipe via a rotary joint.

[0009] Preferably, four legs are fixedly installed at equal intervals in a circular array near the edge of the lower surface of the screening drum.

[0010] Preferably, a discharge port is provided on one side of the outer surface of the screening cylinder.

[0011] Preferably, a discharge trough is fixedly installed on the outer surface of the screening cylinder near the discharge port.

[0012] Preferably, an inclined surface is provided at the bottom of the inner wall of the screening drum.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model provides a screening cylinder, a hopper, a feed pipe, a feed port, a hollow shaft, a screen, a push scraper, a turntable and a connecting port, so that when the materials for construction are screened through the screen, the amount of material added on the screen can be controlled, the accumulation of materials on the screen can be avoided, the load of the screen can be reduced, the service life of the screen can be extended, and the blockage of the screen can be reduced while the service life of the screen is extended, thereby improving the material screening efficiency. The materials for construction are stored in the hopper, and the hollow shaft drives the push scraper and the turntable to rotate. When the connecting port rotates to a position below the feed port, the materials in the hopper pass through the feed port and the connecting port and fall onto the screen. When the connecting port is transferred away from the bottom of the feed port, that is, the two are staggered up and down, the materials in the hopper cannot fall onto the screen due to the obstruction of the turntable. As the hollow shaft rotates, the push scraper makes the materials move on the screen, part of the materials pass through the screen, and the rest of the materials are retained on the screen by the screen. In this cycle, the amount of material added on the screen can be controlled.

[0015] 2. The utility model achieves the effect of blowing away the blocked materials in the mesh of the screen, avoiding the blockage of the screen and improving the material screening efficiency by arranging a purge pipe, an air outlet and a compressed air pipe. The compressed air pipe conveys compressed air to the inside of the hollow shaft. After the compressed air enters the purge pipe, it is ejected from the air outlet and blows the screen in the reverse direction, so that the blocked materials in the mesh of the screen are blown away.

[0016] 3. The utility model provides an inclined surface to facilitate the discharge of materials at the bottom of the inner wall of the screening cylinder from the discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0020] Figure 4 It is a schematic diagram of the side sectional structure of the utility model.

[0021] Figure numerals: 1. screening cylinder; 2. hopper; 3. discharge port; 4. discharge chute; 5. support leg; 6. inclined surface; 7. screen; 8. push scraper; 9. hollow shaft; 10. turntable; 11. air outlet; 12. purge pipe; 13. rotating motor; 14. bevel gear A; 15. compressed air pipe; 16. rotary joint; 17. bevel gear B; 18. connecting port; 19. feed pipe; 20. feed port. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Embodiment 1

[0024] like Figure 1-Figure 4 As shown, the utility model proposes a construction material screening device, including a screening drum 1, four legs 5 are fixedly installed in a circular array at equal intervals near the edge position of the lower surface of the screening drum 1, a hopper 2 is fixedly installed on the upper surface of the screening drum 1, materials for construction are stored inside the hopper 2, a feed pipe 19 is fixedly connected to the lower surface of the hopper 2 near the rear surface, and the end of the feed pipe 19 is fixedly connected to the upper surface of the screening drum 1, a feed port 20 is provided on the upper surface of the screening drum 1 below the feed pipe 19, a screen 7 is fixedly installed inside the screening drum 1, a plurality of screens 7 are arranged from top to bottom inside the screening drum 1 to achieve the purpose of multi-stage screening of the materials, and the screening mesh numbers of the plurality of screens 7 increase from top to bottom.

[0025] A hollow shaft 9 is rotatably installed on the lower surface of the screening drum 1, and a rotating motor 13 is fixedly installed on one side of the lower surface of the screening drum 1. A bevel gear A14 is fixedly connected to the end of the output shaft of the rotating motor 13. A bevel gear B17 is fixedly sleeved on the outer surface of the hollow shaft 9, and the bevel gear A14 and the bevel gear B17 are meshed. The rotating motor 13 drives the hollow shaft 9 to rotate through the bevel gears A14 and B17.

[0026] One end of the hollow shaft 9 located inside the screening drum 1 is fixedly connected to a turntable 10, the upper surface of the turntable 10 is in contact with the top of the inner wall of the screening drum 1, and a connecting port 18 is provided on the upper surface of the turntable 10 near the front surface. The material inside the hopper 2 passes through the feed pipe 19, the feed port 20 and the connecting port 18 and falls into the screening drum 1, and then falls on the screen 7 for screening. A push scraper 8 is fixedly installed on the outer surface of the hollow shaft 9 above the screen 7, and the push scraper 8 pushes the material on the screen 7 to move. A discharge port 3 is provided on one side of the outer surface of the screening drum 1, and the number of the discharge ports 3 is more than that of the screening drum 1. There is one more net 7, and one of the discharge ports 3 is arranged on the outer surface of the screening drum 1 near the lower surface, so as to discharge the material at the bottom of the inner wall of the screening drum 1, and each of the remaining discharge ports 3 is arranged on the outer surface of the screening drum 1 above each screen 7, then the material intercepted on each screen 7 is discharged from the corresponding discharge port 3 under the push of the pushing scraper 8, and a discharge trough 4 is fixedly installed on the outer surface of the screening drum 1 near the discharge port 3, and an inclined surface 6 is arranged at the bottom of the inner wall of the screening drum 1, and the setting of the inclined surface 6 facilitates the material at the bottom of the inner wall of the screening drum 1 to be discharged from the discharge port 3.

[0027] When the utility model is in use, materials for construction are stored in the hopper 2, and the hollow shaft 9 drives the pushing scraper 8 and the turntable 10 to rotate. When the connecting port 18 rotates to the position below the feeding port 20, the materials in the hopper 2 pass through the feeding port 20 and the connecting port 18 and fall onto the screen 7. When the connecting port 18 is transferred from below the feeding port 20, that is, the two are staggered up and down, due to the obstruction of the turntable 10, the materials in the hopper 2 cannot fall onto the screen 7. As the hollow shaft 9 rotates, the pushing scraper 8 makes the materials move on the screen 7. Part of the materials pass through the screen 7, while the rest of the materials are retained on the screen 7 by the screen 7. The screened materials are discharged from the corresponding discharge ports 3 respectively. In this cycle, the amount of material added to the screen 7 can be controlled, the accumulation of materials on the screen 7 can be avoided, the load of the screen 7 can be reduced, the service life of the screen 7 can be extended, and the blockage of the screen 7 can be reduced, thereby improving the material screening efficiency.

[0028] Embodiment 2

[0029] like Figure 2 and Figure 3 As shown, the utility model proposes a construction material screening device. Compared with the first embodiment, this embodiment also includes a purge pipe 12 fixedly connected to the side of the outer surface of the hollow shaft 9 away from the push scraper 8, and the purge pipe 12 is located below the screen 7, and an air outlet 11 is provided on the upper surface of the purge pipe 12. The end of the hollow shaft 9 located outside the screening cylinder 1 is rotatably connected to a compressed air pipe 15 through a rotary joint 16, and the end of the compressed air pipe 15 is fixedly connected to the output end of the air compressor.

[0030] In this embodiment, the compressed air pipe 15 transports compressed air to the inside of the hollow shaft 9. After the compressed air enters the inside of the purge pipe 12, it is ejected from the air outlet 11 and blows the screen 7 in the reverse direction so that the blocked material in the mesh of the screen 7 is blown away, thereby avoiding blockage of the screen 7 and improving the material screening efficiency.

[0031] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A construction material screening device, comprising a screening drum (1), Features: A hopper (2) is fixedly mounted on the upper surface of the screening drum (1); a feed pipe (19) is fixedly connected to the lower surface of the hopper (2) near the rear surface, and the end of the feed pipe (19) is fixedly connected to the upper surface of the screening drum (1); a feed port (20) is provided on the upper surface of the screening drum (1) below the feed pipe (19); a screen (7) is fixedly mounted inside the screening drum (1); a hollow shaft (9) is rotatably mounted on the lower surface of the screening drum (1); a turntable (10) is fixedly connected to one end of the hollow shaft (9) located inside the screening drum (1); a connecting port (18) is provided on the upper surface of the turntable (10) near the front surface; and a push scraper (8) is fixedly mounted on the outer surface of the hollow shaft (9) above the screen (7).

2. A construction material screening device according to claim 1, Features: A rotating motor (13) is fixedly mounted on one side of the lower surface of the screening drum (1), a bevel gear A (14) is fixedly connected to the end of the output shaft of the rotating motor (13), a bevel gear B (17) is fixedly sleeved on the outer surface of the hollow shaft (9), and the bevel gear A (14) and the bevel gear B (17) are meshed.

3. A construction material screening device according to claim 1, Features: A purge pipe (12) is fixedly connected to the side of the outer surface of the hollow shaft (9) facing away from the material pushing scraper (8), and the purge pipe (12) is located below the screen (7). An air outlet (11) is provided on the upper surface of the purge pipe (12).

4. A construction material screening device according to claim 3, Features: One end of the hollow shaft (9) located outside the screening drum (1) is rotatably connected to a compressed air pipe (15) via a rotary joint (16).

5. A construction material screening device according to claim 1, Features: Four legs (5) are fixedly installed in an annular array at equal intervals near the edge of the lower surface of the screening cylinder (1).

6. A construction material screening device according to claim 1, Features: A discharge port (3) is provided on one side of the outer surface of the screening cylinder (1).

7. A construction material screening device according to claim 6, Features: A discharge trough (4) is fixedly mounted on the outer surface of the screening cylinder (1) near the discharge port (3).

8. A construction material screening device according to claim 6, Features: The bottom of the inner wall of the screening cylinder (1) is provided with an inclined surface (6).

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