Machine-made sand screening and crushing device

Abstract

The utility model provides a machine-made sand screening and crushing device, and mainly relates to the technical field of machine-made sand processing. A machine-made sand screening and crushing device comprises a shell, a feeding hopper is fixedly arranged at the top of the shell, a crushing roller is installed at the position, close to the top, in the shell, a boss is fixedly arranged at the position, close to the middle, of the inner wall of the shell, a screening net is arranged on the boss in a matched mode, and a first discharging opening is formed in the position, close to the top of the screening net, of the side face of the shell. A baffle is fixedly arranged on the inner wall of the shell close to the first discharging port, and a driving motor is fixedly arranged at the bottom of the inner wall of the shell and drives the screening net to rotate through a rotating shaft. The machine-made sand screening device has the advantages that the driving motor drives the screening net to rotate, machine-made sand falling on the screening net moves outwards from the circle center under the action of centrifugal force, and the machine-made sand falls from screening holes with different diameters and then is collected; the screening net is vibrated through the height difference, blocking of machine-made sand on the screening net is reduced, and the crushing efficiency of the crusher is improved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of machine-made sand processing, in particular to a machine-made sand screening and crushing device. Background Art

[0002] Artificial sand refers to sand processed by sand making machines and other auxiliary equipment. The finished product is more regular and can be processed into sand of different rules and sizes according to different process requirements, which can better meet daily needs. During production, the sand and gravel raw materials need to be crushed. The existing crushing equipment generally needs to vibrate and screen the crushed artificial sand. In the prior art, the vibrating screen is installed horizontally, and the screening driving force is very large, which consumes a lot of energy. Although the vibration motor has a vibrating effect on the artificial sand flowing through, it can separate artificial sand of different sizes, but the screen mesh is often blocked due to the excessive thickness of the artificial sand accumulation, and the artificial sand of different sizes cannot be distinguished, resulting in poor separation quality of artificial sand. Utility Model Content

[0003] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical solutions:

[0004] A machine-made sand screening and crushing device comprises a shell, a feed hopper is fixedly arranged on the top of the shell, a crushing roller is installed near the top inside the shell, a boss is fixedly arranged near the middle position of the inner wall of the shell, a screening net is cooperatively arranged on the boss, a first discharge port is opened on the side of the shell near the top of the screening net, a baffle is fixedly arranged on the inner wall of the shell near the first discharge port, a driving motor is fixedly arranged on the bottom of the inner wall of the shell, the driving motor drives the screening net to rotate through a rotating shaft, and a second discharge port is opened in the bottom array of the shell.

[0005] The bottom array of the screening net is provided with rollers, the top array of the bosses is fixed with bumps, the rollers abut against the tops of the bumps, the bumps are provided in a right-angle trapezoidal shape, and the inclined surfaces of the bumps are provided in an arc shape.

[0006] The diameter of the sieve holes of the sieve net gradually increases from the inside to the outside, the sieve net is arranged in an arc shape, and the top of the sieve net abuts against the baffle.

[0007] The outer ring of the rotating shaft is fixedly provided with a spline array near the top, and the screening net is provided with a spline groove, and the spline abuts against the inner wall of the spline groove.

[0008] A guide bucket is fixedly arranged on the top of the inner wall of the shell, a discharge hopper is fixedly arranged on the outer ring of the shell near the first discharge port, a guide plate is fixedly arranged on the bottom of the inner wall of the shell, a protective cover is fixedly arranged at the middle position of the bottom of the inner wall of the shell, the driving motor is located inside the protective cover, and the rotating shaft passes through the top of the protective cover.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model has a simple structure and is easy to install and use. The screening net is driven to rotate by a driving motor. The machine-made sand falling on the screening net moves outward from the center of a circle due to the action of centrifugal force. The machine-made sand falls from sieve holes of different diameters and is then collected, and the crushing and screening effect is good. The screening net is vibrated through the height difference, which reduces the clogging of the machine-made sand on the screening net and improves the crushing efficiency of the crusher. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Attached Figure 2 It is a schematic diagram of the internal cross-sectional structure of the utility model;

[0013] Attached Figure 3 It is a schematic diagram of the exploded structure of the utility model;

[0014] Attached Figure 4 It is a schematic diagram of the structure of the screening net of the utility model.

[0015] The numbers shown in the accompanying drawings are: 1, shell; 2, feed hopper; 3, crushing roller; 4, boss; 401, bump; 5, screening net; 501, roller; 502, spline groove; 6, first discharge port; 7, baffle; 8, drive motor; 9, rotating shaft; 10, second discharge port; 11, guide hopper; 12, discharge hopper; 13, guide plate; 14, protective cover. DETAILED DESCRIPTION

[0016] The utility model is further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by this application.

[0017] In conjunction with the accompanying drawings, a machine-made sand screening and crushing device includes a shell 1, a feed hopper 2 is fixedly arranged on the top of the shell 1, a crushing roller 3 is installed near the top inside the shell 1, a boss 4 is fixedly arranged near the middle position of the inner wall of the shell 1, a screening net 5 is arranged on the boss 4, a first discharge port 6 is opened on the side of the shell 1 near the top of the screening net 5, a baffle 7 is fixedly arranged on the inner wall of the shell 1 near the first discharge port 6, a drive motor 8 is fixedly arranged at the bottom of the inner wall of the shell 1, and the drive motor 8 drives the screening net 5 to rotate through a rotating shaft 9, a second discharge port 10 is opened in the bottom array of the shell 1, and a support frame is fixedly arranged in the bottom array of the shell 1.

[0018] The bottom array of the screening net 5 is provided with rollers 501, the top array of the boss 4 is fixedly provided with bumps 401, the rollers 501 abut against the top of the bumps 401, the bumps 401 are arranged in a right-angle trapezoidal shape, and the inclined surface of the bumps 401 is arranged in an arc shape. The screening net 5 is vibrated through the height difference, which is beneficial to reduce the blockage of the screen holes and makes the sand and gravel on the screening net 5 evenly distributed, thereby improving the screening effect. The bottom of the screening net 5 abuts against the bottom of the boss 4.

[0019] The diameter of the sieve holes of the screening net 5 gradually increases from the inside to the outside. The screening net 5 is arranged in an arc shape. The top of the screening net 5 abuts against the baffle 7. When the screening net 5 rotates, the sand and gravel falling thereon moves outward from the center of the circle due to the action of centrifugal force. The sand and gravel with smaller particles fall when passing through the smaller sieve holes close to the inner circle, and the sand and gravel with slightly larger particles fall when passing through the sieve holes close to the outer circle. The sand and gravel with larger particles that cannot be screened are discharged through the first discharge port 6 under the guidance of the baffle 7, and are screened again after secondary crushing.

[0020] The outer ring of the rotating shaft 9 is fixedly provided with splines near the top array, and the screening net 5 is provided with a spline groove 502, and the spline abuts against the inner wall of the spline groove 502. Through this structural design, the screening net 5 can move radially along the rotating shaft 9 while rotating.

[0021] A guide bucket 11 is fixedly arranged at the top of the inner wall of the shell 1, a discharge hopper 12 is fixedly arranged at the outer ring of the shell 1 near the first discharge port 6, a guide plate 13 is fixedly arranged at the bottom of the inner wall of the shell 1, and this structural design facilitates the discharge of sand and gravel. A protective cover 14 is fixedly arranged at the middle position of the bottom of the inner wall of the shell 1, the drive motor 8 is located inside the protective cover 14, and the rotating shaft 9 passes through the top of the protective cover 14.

[0022] When the device is in use, sand and gravel are poured into the inside of the feed hopper 2, and the sand and gravel are crushed into machine-made sand by the crushing rollers 3 rolling against each other, and then fall on the screening net 5, and the driving motor 8 is started to drive the screening net 5 to rotate. Under the action of centrifugal force, the machine-made sand moves outward from the center of the circle, and the machine-made sand with smaller particles falls after being screened by the screening net 5 for collection, and the machine-made sand with larger particles moves to the edge of the screening net 5 and is discharged from the first discharge port 6 after being guided by the baffle 7, and is screened again after secondary crushing; the roller 501 at the bottom of the screening net 5 rolls along the boss 4, falls after passing the convex block 401, thereby generating vibration, and evenly distributes the machine-made sand on the screening net 5, thereby improving the filtering effect.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A machine-made sand screening and crushing device, comprising a housing (1), characterized in that: A feed hopper (2) is fixedly arranged on the top of the shell (1), a crushing roller (3) is installed near the top of the shell (1), a boss (4) is fixedly arranged near the middle position of the inner wall of the shell (1), a screening net (5) is arranged on the boss (4), a first discharge port (6) is opened on the side of the shell (1) near the top of the screening net (5), a baffle (7) is fixedly arranged on the inner wall of the shell (1) near the first discharge port (6), a driving motor (8) is fixedly arranged on the bottom of the inner wall of the shell (1), and the driving motor (8) drives the screening net (5) to rotate through a rotating shaft (9), and a second discharge port (10) is opened in an array at the bottom of the shell (1); The bottom of the screening net (5) is provided with rollers (501) in an array, the top of the boss (4) is fixedly provided with convex blocks (401) in an array, the rollers (501) abut against the top of the convex blocks (401), the convex blocks (401) are arranged in a right-angle trapezoidal shape, and the inclined surface of the convex blocks (401) is arranged in an arc shape; The outer ring of the rotating shaft (9) is fixedly provided with a spline near the top array, and the screening net (5) is provided with a spline groove (502), and the spline abuts against the inner wall of the spline groove (502).

2. The machine-made sand screening and crushing device according to claim 1, characterized in that: The diameter of the sieve holes of the sieve net (5) gradually increases from the inside to the outside. The sieve net (5) is arranged in an arc shape, and the top of the sieve net (5) abuts against the baffle (7).

3. The machine-made sand screening and crushing device according to claim 1, characterized in that: A guide bucket (11) is fixedly arranged at the top of the inner wall of the shell (1), a discharge bucket (12) is fixedly arranged at a position of the outer ring of the shell (1) close to the first discharge port (6), a guide plate (13) is fixedly arranged at the bottom of the inner wall of the shell (1), a protective cover (14) is fixedly arranged at the middle position of the bottom of the inner wall of the shell (1), the drive motor (8) is located inside the protective cover (14), and the rotating shaft (9) passes through the top of the protective cover (14).

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