Mechanical screening device for rockfill materials

Abstract

The utility model belongs to the field of screening devices, and particularly relates to a mechanical screening device for rockfill materials, which comprises a screening box, supporting legs are fixedly connected to the lower end of the screening box, a frame is hinged to the interior of the screening box, a screen is fixedly connected to the interior of the frame, and a vibrating mechanism is arranged on the screening box. A material guide plate is hinged to the interior of the screening box, a buffering mechanism is arranged in the screening box, and a guide groove is fixedly connected to the surface of the screening box. The connecting sleeve is driven by the motor to rotate, so that the eccentric wheel rotates to collide with the screen mesh, and when the device is used, the screen mesh can vibrate, large-particle stones are prevented from being clamped in screen holes of the screen mesh, and screening of the screen mesh is more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, in particular to a mechanical screening device for rockfill materials. Background Art

[0002] Cake-fill construction is suitable for large areas. Before deployment, select the appropriate location and fill the gaps. Stone crushed materials of appropriate particle size are added to fill the gaps. Therefore, the stone crushed materials need to be screened.

[0003] The utility model patent with the patent authorization announcement number CN221816230U discloses a stone crushing and screening device, which belongs to the field of screening technology; it includes: a box body, a feed hopper is provided at the top of the box body, the box body is a cavity structure, and the inside of the box body is provided with a crushing component, a screening mesh 1 and a screening mesh 2 in sequence from top to bottom, a scraper 1 is slidably connected to the top of the screening mesh 1, and a scraper 2 is slidably connected to the top of the screening mesh 2, and a discharge port 1 and a discharge port 2 are respectively opened on the inner wall of one side of the box body, the discharge port 1 is adapted to the screening mesh 1, and the discharge port 2 is adapted to the screening mesh 2, and a return mechanism is installed on the outer wall of one side of the box body. The material is crushed by the crushing component, and the crushed material is screened by the screening mesh 1 and the screening mesh 2. The accumulated material is driven by the scraper 1 and the scraper 2 by the driving mechanism to move, and the accumulated material is pushed into the collection box to avoid the disassembly of the screening mesh 1 and the screening mesh 2.

[0004] However, when the device is in use, the screen is easily clogged by stone fragments, affecting the screening efficiency. At the same time, when the stone enters the interior of the device, the stone hits the screen, causing the screen to be damaged. Utility Model Content

[0005] The purpose of the utility model is to provide a mechanical material screening device for rock piles, which solves the problem that when the device is in use, the screen is easily blocked by stone fragments, affecting the screening efficiency. At the same time, when the stone enters the interior of the device, the stone hits the screen, causing the screen to be damaged by the impact.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a mechanical screening device for rockfill materials, comprising a screening box, a support leg fixedly connected to the lower end of the screening box, a frame hingedly connected to the interior of the screening box, a screen fixedly connected to the interior of the frame, a vibration mechanism provided on the screening box, a material guide plate hingedly connected to the interior of the screening box, a buffer mechanism provided inside the screening box, and a guide groove fixedly connected to the surface of the screening box.

[0007] Preferably, the vibration mechanism includes an elastic pad, the upper end of the frame is bonded with an elastic pad, the elastic pad is bonded to the screening box, a motor is fixedly mounted on the right end of the screening box, the rotating shaft of the motor passes through the screening box and is rotatably connected to the screening box, a connecting sleeve is slidably connected to the outer side of the rotating shaft of the motor, the left end of the connecting sleeve is fixedly connected to an eccentric wheel, and the eccentric wheel is in contact with the screen. The motor drives the connecting sleeve to rotate, thereby causing the eccentric wheel to rotate and collide with the screen, so that when the device is in use, the screen can be vibrated to prevent large particles of stone from being stuck in the sieve holes of the screen, making the screen screening more efficient.

[0008] Preferably, the connecting sleeve is internally slidably connected to a limit pin, and the limit pin is connected to the rotating shaft of the motor via a thread. By providing the limit pin, the connecting sleeve and the rotating shaft are connected.

[0009] Preferably, the buffer mechanism includes a partition, a support plate welded to the interior of the screening box, a push rod slidably connected to the interior of the support plate, a push block fixedly connected to the upper end of the push rod, the push block in contact with the guide plate, and a spring provided on the outer side of the push rod. The spring acts on the push block, causing the push block to elastically support the guide plate, so that the guide plate buffers the stone material, thereby preventing stones from pouring into the screening box and hitting the screen, causing damage to the screen.

[0010] Preferably, a partition is fixedly connected to the interior of the screening box, and the partition is in contact with the material guide plate. By providing the partition, leakage of material from the gap between the material guide plate and the screening box is prevented.

[0011] Preferably, one end of the spring is fixedly connected to the support plate, and the other end of the spring is fixedly connected to the top block. By providing the spring, the top block is easy to reset.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. The utility model drives the connecting sleeve to rotate through a motor, thereby causing the eccentric wheel to rotate and collide with the screen. As a result, when the device is in use, the screen can be vibrated to prevent large particles of stone from being stuck in the sieve holes of the screen, making the screen screening more efficient.

[0014] 2. The utility model acts on the top block through the spring, so that the top block elastically supports the guide plate, and the guide plate buffers the stone material, thereby preventing the stone from pouring into the screening box and hitting the screen, causing damage to the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of the overall structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 sectional view of

[0017] Figure 3 For this utility model Figure 2 Right view of;

[0018] Figure 4 For this utility model Figure 2 3D view of the support plate.

[0019] In the figure: 1. Screening box; 2. Support legs; 3. Frame; 4. Screen; 5. Vibrating mechanism; 6. Guide plate; 7. Buffer mechanism; 8. Guide groove; 51. Elastic pad; 52. Motor; 53. Connecting sleeve; 54. Limit pin; 55. Eccentric wheel; 71. Partition; 72. Support plate; 73. Push rod; 74. Push block; 75. Spring. DETAILED DESCRIPTION

[0020] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 3 A mechanical screening device for rockfill materials includes a screening box 1, a support leg 2 is fixedly connected to the lower end of the screening box 1, a frame 3 is hingedly connected to the inside of the screening box 1, a screen 4 is fixedly connected to the inside of the frame 3, a vibration mechanism 5 is provided on the screening box 1, a guide plate 6 is hingedly connected to the inside of the screening box 1, a buffer mechanism 7 is provided inside the screening box 1, and a guide groove 8 is fixedly connected to the surface of the screening box 1.

[0022] See also Figure 2 、 Figure 3 The vibration mechanism 5 includes an elastic pad 51, an elastic pad 51 is bonded to the upper end of the frame 3, and the elastic pad 51 is bonded to the screening box 1. The right end of the screening box 1 is fixedly installed with a motor 52, and the rotating shaft of the motor 52 passes through the screening box 1 and is rotatably connected to the screening box 1. The outer side of the rotating shaft of the motor 52 is slidably connected with a connecting sleeve 53, and the internal sliding connection of the connecting sleeve 53 is connected to a limit pin 54. The limit pin 54 and the rotating shaft of the motor 52 are threadedly connected. By setting the limit pin 54, the connecting sleeve 53 and the rotating shaft are connected, and the left end of the connecting sleeve 53 is fixedly connected with an eccentric wheel 55, which contacts the sieve 4 and drives the connecting sleeve 53 to rotate by the motor 52, thereby causing the eccentric wheel 55 to rotate and collide with the sieve 4, so that when the device is in use, the sieve 4 can be vibrated to prevent large particles of stone from being stuck in the sieve holes of the sieve 4, making the screening of the sieve 4 more efficient.

[0023] See also Figure 2 、 Figure 4 When the locking cam 73 is in the unlocking state, the locking cam 73 is in the unlocking state, and the locking cam 73 is in the unlocking state, so that the locking cam 73 can be locked.

[0024] The cam 73 is pressed against the top of the gear 74 and the cam 76 is pressed downwards to release the force of the spring 75, so that the cam 73 is pressed downwards and the cam 76 is pressed downwards to release the force of the spring 75.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mechanical screening device for rockfill materials, comprising a screening box (1), characterized in that: The lower end of the screening box (1) is fixedly connected to a support leg (2), the interior of the screening box (1) is hinged with a frame (3), the interior of the frame (3) is fixedly connected to a screen (4), a vibration mechanism (5) is provided on the screening box (1), a material guide plate (6) is hinged to the interior of the screening box (1), a buffer mechanism (7) is provided inside the screening box (1), and a guide groove (8) is fixedly connected to the surface of the screening box (1).

2. The mechanical screening device for rockfill materials according to claim 1, characterized in that: The vibration mechanism (5) includes an elastic pad (51), the upper end of the frame (3) is bonded with the elastic pad (51), the elastic pad (51) is bonded to the screening box (1), the right end of the screening box (1) is fixedly mounted with a motor (52), the rotating shaft of the motor (52) passes through the screening box (1) and is rotatably connected to the screening box (1), the outer side of the rotating shaft of the motor (52) is slidably connected to a connecting sleeve (53), the left end of the connecting sleeve (53) is fixedly connected to an eccentric wheel (55), and the eccentric wheel (55) is in contact with the screen (4).

3. The rockfill material mechanical screening device according to claim 2, characterized in that: The interior of the connecting sleeve (53) is slidably connected to a limit pin (54), and the limit pin (54) and the rotating shaft of the motor (52) are connected via threads.

4. The mechanical screening device for rockfill materials according to claim 1, characterized in that: The buffer mechanism (7) comprises a partition (71), a support plate (72) is welded inside the screening box (1), a push rod (73) is slidably connected inside the support plate (72), a top block (74) is fixedly connected to the upper end of the push rod (73), the top block (74) is in contact with the guide plate (6), and a spring (75) is provided on the outer side of the push rod (73).

5. The rockfill material mechanical screening device according to claim 4, characterized in that: A partition plate (71) is fixedly connected to the interior of the screening box (1), and the partition plate (71) is in contact with the material guide plate (6).

6. The mechanical screening device for rockfill materials according to claim 4, characterized in that: One end of the spring (75) is fixedly connected to the support plate (72), and the other end of the spring (75) is fixedly connected to the top block (74).

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