Vibrating screen for screening low-smoke halogen-free particles

Abstract

The vibrating screen for screening the low-smoke halogen-free particles comprises a screen frame, a surrounding plate is fixedly installed at the top of the screen frame, a feeding pipe is fixedly installed at the top of the surrounding plate, an installation plate is installed in the screen frame, one end of the installation plate is installed on the inner wall of the screen frame in a rotating mode, and a screen mesh is fixedly installed in the middle of the installation plate. Low-smoke halogen-free particles are poured into the screen frame and the surrounding plate through the feeding pipe, the low-smoke halogen-free particles are screened through the screen, and the mounting plate is intermittently leveled and inclined through operation of the driving motor, so that the existing time of the low-smoke halogen-free particles on the screen is prolonged, and the screening effect on the low-smoke halogen-free particles is improved; compressed air is sprayed into the screen frame through the air inlet pipe, the air outlet pipe and the air nozzles, and the compressed air blows the low-smoke halogen-free particles clamped on the screen to clean the screen.

Description

Technical Field

[0001] The utility model relates to the technical field of vibrating screens, in particular to a vibrating screen for screening low-smoke and halogen-free particles. Background Art

[0002] Most of the existing wires and cables are made of low-smoke halogen-free plastics. When producing wires and cables, low-smoke halogen-free particles need to be used as raw materials. When producing low-smoke halogen-free particles, the low-smoke halogen-free particles need to be screened.

[0003] In the "A vibrating screen for screening low-smoke halogen-free cable granular material" with the authorization announcement number "CN208288422U", it includes a screen frame, a panel, a collection box, a vibration motor and a purge device. A screen is arranged in the center of the screen frame, the panel is arranged on the periphery of the screen frame, one end of the panel is opened to form a discharge port, the collection box is arranged below the screen, a purge device is arranged at one end of the collection box, and a collection bag is arranged at the other end. A first windshield is arranged inside the collection box, and a second windshield is arranged above both ends of the first windshield, and a falling object channel is formed between the first windshield and the second windshield;

[0004] In the above-mentioned prior art, a guard plate and a baffle cover are added to the existing vibrating screen to prevent material splashing. However, the vibrating screen in this technology does not change its position and works in the same way as the existing vibrating screen, resulting in a shorter retention time of low-smoke halogen-free particles on the vibrating screen. There is a risk of discharging qualified and unqualified materials from the discharge port before being screened by the vibrating screen, thereby reducing the screening effect. At the same time, the low-smoke halogen-free particles may be stuck in the holes of the vibrating screen, thereby reducing the screening efficiency. Utility Model Content

[0005] The utility model aims to provide a vibrating screen for screening low-smoke and halogen-free particles to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vibrating screen for screening low-smoke halogen-free particles, comprising a screen frame, a baffle is fixedly installed on the top of the screen frame, a feed pipe is fixedly installed on the top of the baffle, a mounting plate is installed inside the screen frame, one end of the mounting plate is rotatably installed on the inner wall of the screen frame, a screen is fixedly installed in the middle of the mounting plate, an air inlet pipe is fixedly installed on one end of the screen frame, an air outlet pipe is fixedly installed on one end of the air inlet pipe, and air nozzles are fixedly installed on the air outlet pipe at equal intervals.

[0007] As a further preferred embodiment of the present technical solution, a baffle is fixedly mounted on the inner wall of the enclosure.

[0008] As a further preferred embodiment of the technical solution, a rotating rod is rotatably mounted on one end of the screen frame through a bearing, an extrusion cam is symmetrically fixedly mounted on the middle part of the rotating rod, a driving motor is fixedly mounted on one side of the screen frame, an output end of the driving motor is fixedly connected to one end of the rotating rod, an extrusion block is fixedly mounted on the bottom of one end of the mounting plate away from the screen frame, and the extrusion block is in extrusion contact with the extrusion cam.

[0009] As a further preferred embodiment of the present technical solution, the extrusion cam is composed of two arcs with the same center and different radii.

[0010] As a further preferred embodiment of the present technical solution, sliding holes are symmetrically provided at one end of the mounting plate away from the screen frame, a sliding rod is slidably installed inside the sliding hole, a movable plate is fixedly installed at one end between the two sliding rods, an extrusion spring is fixedly installed at one end of the sliding rod away from the movable plate, and one end of the extrusion spring away from the sliding rod is fixedly connected to the end of the sliding hole corresponding to the mounting plate.

[0011] As a further preferred embodiment of the present technical solution, a debris discharge port is provided at one end of the screen frame close to the movable plate, and a discharge port is provided at one end of the screen frame away from the discharge port.

[0012] As a further preferred embodiment of the present technical solution, vibration springs are symmetrically fixedly installed on the bottom of the screen frame, fixing plates are fixedly installed on the bottoms of the four vibration springs, and a vibration motor is fixedly installed on the bottom of the screen frame.

[0013] The utility model provides a vibrating screen for screening low-smoke and halogen-free particles, which has the following beneficial effects:

[0014] (1) The utility model pours low-smoke halogen-free particles into the screen frame and the enclosure through a feed pipe, screens the low-smoke halogen-free particles through a screen, and drives a motor to make the gap of the mounting plate horizontal and inclined, so as to increase the existence time of the low-smoke halogen-free particles on the screen, thereby improving the screening effect of the low-smoke halogen-free particles.

[0015] (2) The utility model sprays compressed gas into the screen frame through the air inlet pipe, the air outlet pipe and the air nozzle. The compressed gas will blow the low-smoke halogen-free particles stuck on the screen to clean the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0018] Figure 3 It is a partial structural schematic diagram of the utility model;

[0019] Figure 4It is a schematic diagram of the partial explosion structure of the utility model;

[0020] In the figure: 1. screen frame; 2. enclosure; 3. feed pipe; 4. mounting plate; 5. screen; 6. air inlet pipe; 7. air outlet pipe; 8. air nozzle; 9. baffle; 10. rotating rod; 11. extrusion cam; 12. driving motor; 13. extrusion block; 14. sliding hole; 15. sliding rod; 16. moving plate; 17. extrusion spring; 18. debris discharge port; 19. discharge port; 20. vibration spring; 21. fixing plate; 22. vibration motor. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] The utility model provides a technical solution: Figures 1 to 4 As shown, in this embodiment, a vibrating screen for screening low-smoke zero-halogen particles includes a screen frame 1, a shroud 2 is fixedly installed on the top of the screen frame 1, a feed pipe 3 is fixedly installed on the top of the shroud 2, a mounting plate 4 is installed inside the screen frame 1, one end of the mounting plate 4 is rotatably mounted on the inner wall of the screen frame 1, a screen 5 is fixedly installed in the middle of the mounting plate 4, the mounting plate 4 can be intermittently tilted and horizontally arranged, when the mounting plate 4 is tilted, it can drive unqualified low-smoke zero-halogen particles to slide off the screen 5, and when the mounting plate 4 is installed When the mounting plate 4 is horizontal, qualified low-smoke halogen-free particles will fall through the screen 5 to the discharge port 19, thereby increasing the retention time of the low-smoke halogen-free particles on the screen 5 and improving the screening effect. An air inlet pipe 6 is fixedly installed at one end of the screen frame 1, and an air outlet pipe 7 is fixedly installed at one end of the air inlet pipe 6. Air nozzles 8 are fixedly installed on the air outlet pipe 7 at equal intervals. Compressed gas is sprayed into the screen frame 1 through the air nozzles 8. The compressed gas will blow the low-smoke halogen-free particles stuck on the screen 5, so as to clean the screen 5.

[0023] like Figures 1 to 4 As shown, a baffle 9 for conveying low-smoke zero-halogen particles to the rotation axis position of the mounting plate 4 is fixedly installed on the inner wall of the enclosure plate 2 .

[0024] The baffle plate 9 blocks the particles and moves them to the end of the mounting plate 4, so as to allow the low-smoke halogen-free particles to completely pass through the entire screen 5, thereby effectively screening the low-smoke halogen-free particles.

[0025] like Figures 1 to 4 As shown, a rotating rod 10 is rotatably mounted on one end of the screen frame 1 through a bearing, an extrusion cam 11 is symmetrically fixedly mounted in the middle of the rotating rod 10, a driving motor 12 is fixedly mounted on one side of the screen frame 1, an output end of the driving motor 12 is fixedly connected to one end of the rotating rod 10, an extrusion block 13 is fixedly mounted on the bottom of one end of the mounting plate 4 away from the screen frame 1, and the extrusion block 13 is in extrusion contact with the extrusion cam 11.

[0026] The driving motor 12 drives the rotating rod 10 to rotate, which drives the outer ends of the extrusion cam 11 to intermittently squeeze the extrusion block 13, and then drives the mounting plate 4 to intermittently level and tilt, so as to increase the existence time of low-smoke halogen-free particles on the screen 5, and to improve the screening effect of low-smoke halogen-free particles.

[0027] like Figures 1 to 4 As shown, the extrusion cam 11 is composed of two arcs with the same center and different radii.

[0028] It can be ensured that the mounting plate 4 exists for a period of time when it is in a horizontal or inclined state.

[0029] like Figures 1 to 4 As shown, a sliding hole 14 is symmetrically provided at one end of the mounting plate 4 away from the screen frame 1, a sliding rod 15 is slidably installed inside the sliding hole 14, a moving plate 16 is fixedly installed at one end between the two sliding rods 15, an extrusion spring 17 is fixedly installed at one end of the sliding rod 15 away from the moving plate 16, and one end of the extrusion spring 17 away from the sliding rod 15 is fixedly connected to the end of the sliding hole 14 corresponding to the mounting plate 4.

[0030] When the mounting plate 4 is tilted, the extrusion spring 17 will push the slide bar 15, thereby driving the end of the movable plate 16 to always contact the inner wall of the screen frame 1 to prevent the leakage of low-smoke halogen-free particles from the end of the mounting plate 4.

[0031] like Figures 1 to 4 As shown, a debris discharge port 18 is provided at one end of the screen frame 1 close to the movable plate 16 , and a material discharge port 19 is provided at one end of the screen frame 1 away from the material discharge port 19 .

[0032] When the mounting plate 4 is horizontal, qualified low-smoke zero-halogen particles will pass through the screen 5 and fall to the discharge port 19 . When the mounting plate 4 is tilted, unqualified low-smoke zero-halogen particles will slide through the surface of the screen 5 to the impurity discharge port 18 .

[0033] like Figures 1 to 4 As shown, vibration springs 20 are symmetrically fixedly installed at the bottom of the screen frame 1, fixing plates 21 are fixedly installed at the bottom of the four vibration springs 20, and a vibration motor 22 is fixedly installed at the bottom of the screen frame 1.

[0034] The operation of the vibration motor 22 and the connection of the vibration spring 20 to the screen frame 1 and the fixed plate 21 will drive the screen frame 1 to vibrate, so as to improve the screening effect.

[0035] The utility model provides a vibrating screen for screening low-smoke and halogen-free particles. The specific working principle is as follows:

[0036] When the device is in use, low-smoke halogen-free particles are poured into the screen frame 1 and the enclosure 2 through the feed pipe 3. The low-smoke halogen-free particles will pass through the baffle 9 and move to the end of the mounting plate 4, and the low-smoke halogen-free particles will be screened through the screen 5;

[0037] In the process of screening the low-smoke halogen-free particles through the screen 5, the driving motor 12 drives the rotating rod 10 to rotate, which will drive the outer ends of the extrusion cam 11 to intermittently extrude the extrusion blocks 13, and then drive the mounting plate 4 to be intermittently horizontal and inclined. When the mounting plate 4 is horizontal, the operation of the vibration motor 22 will drive the screen frame 1 to vibrate, and then drive the low-smoke halogen-free particles to vibrate. By increasing the existence time of the low-smoke halogen-free particles on the screen 5, the screening effect of the low-smoke halogen-free particles is improved. Qualified low-smoke halogen-free particles will pass through the screen 5 and fall to the discharge port 19. When the mounting plate 4 is tilted, unqualified low-smoke halogen-free particles will slide through the surface of the screen 5 to the impurity discharge port 18;

[0038] After long-term use, compressed gas is sprayed into the screen frame 1 through the air inlet pipe 6 , the air outlet pipe 7 and the air nozzle 8 , and the compressed gas will blow the low-smoke halogen-free particles stuck on the screen 5 to clean the screen 5 .

[0039] 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 vibrating screen for screening low-smoke zero-halogen particles, comprising a screen frame (1), a shroud (2) fixedly mounted on the top of the screen frame (1), a feed pipe (3) fixedly mounted on the top of the shroud (2), characterized in that: A mounting plate (4) is installed inside the sieve frame (1), one end of the mounting plate (4) is rotatably mounted on the inner wall of the sieve frame (1), a sieve (5) is fixedly mounted in the middle of the mounting plate (4), an air inlet pipe (6) is fixedly mounted on one end of the sieve frame (1), an air outlet pipe (7) is fixedly mounted on one end of the air inlet pipe (6), and air nozzles (8) are fixedly mounted on the air outlet pipe (7) at equal intervals.

2. A vibrating screen for screening low-smoke zero-halogen particles according to claim 1, characterized in that: A baffle (9) is fixedly mounted on the inner wall of the enclosure (2).

3. A vibrating screen for screening low-smoke zero-halogen particles according to claim 1, characterized in that: A rotating rod (10) is rotatably mounted on one end of the sieve frame (1) via a bearing, an extrusion cam (11) is symmetrically fixedly mounted in the middle of the rotating rod (10), a driving motor (12) is fixedly mounted on one side of the sieve frame (1), an output end of the driving motor (12) is fixedly connected to one end of the rotating rod (10), and an extrusion block (13) is fixedly mounted on the bottom of one end of the mounting plate (4) away from the sieve frame (1), the extrusion block (13) is in extrusion contact with the extrusion cam (11).

4. A vibrating screen for screening low-smoke zero-halogen particles according to claim 3, characterized in that: The extrusion cam (11) consists of two circular arcs with the same center and different radii.

5. The vibrating screen for screening low-smoke zero-halogen particles according to claim 3, characterized in that: The mounting plate (4) is symmetrically provided with sliding holes (14) at one end away from the screen frame (1), a sliding rod (15) is slidably installed inside the sliding hole (14), a moving plate (16) is fixedly installed at one end between the two sliding rods (15), an extrusion spring (17) is fixedly installed at one end of the sliding rod (15) away from the moving plate (16), and one end of the extrusion spring (17) away from the sliding rod (15) is fixedly connected to the end of the mounting plate (4) corresponding to the sliding hole (14).

6. A vibrating screen for screening low-smoke zero-halogen particles according to claim 5, characterized in that: The end of the sieve frame (1) close to the movable plate (16) is provided with a debris discharge port (18), and the end of the sieve frame (1) away from the discharge port (19) is provided with a discharge port (19).

7. A vibrating screen for screening low-smoke zero-halogen particles according to claim 6, characterized in that: Vibration springs (20) are symmetrically fixedly installed at the bottom of the sieve frame (1), a fixing plate (21) is fixedly installed at the bottom of the four vibration springs (20), and a vibration motor (22) is fixedly installed at the bottom of the sieve frame (1).

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