Grinding and screening pretreatment device for lean agent for coking coal blending

Abstract

The utility model relates to the field of lean agent screening, in particular to a grinding and screening pretreatment device of a lean agent for coking coal blending. The grinding and screening pretreatment device of the thinning agent for coking and coal blending comprises a screen frame, a rotating plate and a rotating disc, a feeding hopper is fixedly connected to the top end of the screen frame, a screen is installed in the screen frame, the rotating plate is rotationally connected into the feeding hopper, a feeding opening is formed in the rotating plate, and a V-shaped shifting rod is fixedly connected into the feeding hopper; a grinding plate is fixedly connected to the interior of the feeding hopper and located below the rotating plate, a rotating disc is installed at the top end in the screen frame, and connecting balls are symmetrically installed on the two sides of the rotating disc. The rotating plate and the grinding plate are arranged in the feeding hopper, and the power of the driving motor is combined, so that a thinning agent is fully crushed and dispersed before entering the screen frame, and the caking phenomenon is effectively prevented; the pretreatment step lays a good foundation for the subsequent screening process.

Description

Technical Field

[0001] The utility model relates to the field of screening of slimming agents, in particular to a grinding and screening pretreatment device for slimming agents used in coking coal blending. Background Art

[0002] In the coking coal blending industry, as an important additive, the uniformity and particle size distribution of slimming agents are crucial for the final quality of coke. However, in the current production process, before the slimming agent enters the sieve frame for screening, it often forms lumps due to reasons such as humidity, storage conditions or its own properties. These lumps are not only difficult to pass through the sieve mesh but also clog the sieve holes, resulting in a significant decrease in screening efficiency and even affecting the normal operation of the entire production line.

[0003] In addition, even if the slimming agent can smoothly enter the sieve frame for screening, during the screening process, due to the physical properties of the slimming agent and the structural design of the sieve mesh, a small amount of slimming agent particles often get stuck on the sieve mesh, forming a "screen blindness" phenomenon. These slimming agents stuck on the sieve mesh are not only difficult to clean automatically but also gradually accumulate as the production process continues, further reducing the screening efficiency and even affecting the screening quality.

[0004] Therefore, it is necessary to provide a new grinding and screening pretreatment device for slimming agents used in coking coal blending to solve the above technical problems. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a grinding and screening pretreatment device for slimming agents used in coking coal blending.

[0006] The grinding and screening pretreatment device for slimming agents used in coking coal blending provided by the utility model includes: a sieve frame, a rotating plate and a turntable. A feed hopper is fixedly connected to the top end of the sieve frame. A sieve mesh is installed inside the sieve frame. A rotating plate is rotatably connected inside the feed hopper. An inlet is provided on the rotating plate. A V-shaped lever is fixedly connected inside the feed hopper. A grinding plate is fixedly connected inside the feed hopper and is located below the rotating plate. A turntable is installed at the top end inside the sieve frame. Connecting balls are symmetrically installed on both sides of the turntable.

[0007] Preferably, a toothed ring is fixedly connected to the middle part of the outer wall of the rotating plate. A driving motor is fixedly connected to the outer wall of the feed hopper. The output end of the driving motor is fixedly connected with a driving gear, and the driving gear extends into the feed hopper and is meshed with the toothed ring.

[0008] Preferably, grinding lines are provided on both sides of the rotating plate and the grinding plate close to each other.

[0009] Preferably, a connecting rod is fixedly connected to the middle of the bottom end of the rotating plate, one end of the connecting rod extends out of the grinding plate and is rotatably connected to the grinding plate, a connecting shaft is rotatably connected inside the screen frame, one end of the connecting shaft is fixedly connected to the turntable, and the other end of the connecting shaft is connected to the connecting rod through a universal joint.

[0010] Preferably, both sides of the turntable are sleeved with spring plates, and one end of the spring plate is fixedly connected to the connecting ball.

[0011] Preferably, the diameter of the rotating plate is larger than the diameter of the grinding plate, and the feed port is far away from the axis of the rotating plate.

[0012] Preferably, a vibration motor is installed at the bottom of the screen frame.

[0013] Preferably, the discharge port of the screen frame is respectively provided with an upper sieve conduit and a lower sieve conduit.

[0014] Compared with the related art, the grinding and screening pretreatment device for the leaning agent for coking coal provided by the utility model has the following beneficial effects:

[0015] Effectively prevent and solve the caking problem: By installing a rotating plate and a grinding plate in the feed hopper, combined with the power of the drive motor, the leaning agent is fully crushed and dispersed before entering the screen frame, effectively preventing the occurrence of caking; this pretreatment step lays a good foundation for the subsequent screening process;

[0016] Automatic screen cleaning function: An innovative highlight of this device lies in the design of the turntable. When the turntable rotates, it not only rotates itself but also drives the continuous rotation of the two springs and the connecting ball. This dynamic process enables the connecting ball to continuously strike the screen, thereby generating a strong vibration effect on the slimming agent particles stuck on the screen. This physical vibration effectively shakes out the slimming agent particles stuck on the screen, realizes the automatic cleaning of the screen, avoids the occurrence of blind screening, and ensures the continuity and efficiency of the screening process.

[0017] Improved screening efficiency and quality: Through the above-mentioned pretreatment and automatic screen cleaning mechanism, this device significantly improves screening efficiency and quality. The uniformity and particle size suitability of the thinning agent particles are guaranteed, making the screening process smoother and reducing screening resistance and energy consumption. At the same time, the continuous cleaning of the screen also ensures the stability of screening accuracy.

[0018] Lower production costs: Due to the reduction of production interruptions and manual cleaning costs caused by agglomeration and blind screening, as well as the improvement of screening efficiency, the pretreatment device of the present invention can significantly reduce production costs in long-term use; in addition, the automated design also reduces manpower requirements, further reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1Schematic structural diagram of the grinding and screening pretreatment device for the slimming agent used in coking coal blending

[0020] Figure 2 For Figure 1 Schematic structural diagram of the partial cross-section of the screen frame shown

[0021] Figure 3 For Figure 1 Schematic structural diagram of the inside of the screen frame shown

[0022] Reference numerals in the figure: 1. Screen frame; 2. Feed hopper; 3. Screen mesh; 4. Rotating plate; 5. Feed inlet; 6. V-shaped lever; 7. Grinding plate; 8. Turntable; 9. Connecting ball; 10. Elastic piece; 11. Vibration motor; 12. Upper screen conduit; 13. Lower screen conduit; 21. Tooth ring; 22. Driving motor; 23. Driving gear; 41. Connecting rod; 42. Connecting shaft. Specific implementation mode

[0023] In order to make the purpose, technical solution and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] The following describes the specific implementation of the present utility model in detail with reference to specific embodiments.

[0025] Please refer to Figures 1-3 , a grinding and screening pretreatment device for the slimming agent used in coking coal blending, the grinding and screening pretreatment device for the slimming agent used in coking coal blending includes: a screen frame 1, a rotating plate 4 and a turntable 8, a feed hopper 2 is fixedly connected to the top end of the screen frame 1, a screen mesh 3 is installed inside the screen frame 1, a rotating plate 4 is rotatably connected inside the feed hopper 2, a feed inlet 5 is provided on the rotating plate 4, a V-shaped lever 6 is fixedly connected inside the feed hopper 2, a grinding plate 7 is fixedly connected inside the feed hopper 2, and the grinding plate 7 is located below the rotating plate 4, a turntable 8 is installed at the top end inside the screen frame 1, connecting balls 9 are symmetrically installed on both sides of the turntable 8, a tooth ring 21 is fixedly connected to the middle part of the outer wall of the rotating plate 4, a driving motor 22 is fixedly connected to the outer wall of the feed hopper 2, a driving gear 23 is fixedly connected to the output end of the driving motor 22, the driving gear 23 extends into the feed hopper 2 and is meshed with the tooth ring 21, grinding patterns are provided on both sides of the rotating plate 4 and the grinding plate 7 that are close to each other, the diameter of the rotating plate 4 is larger than the diameter of the grinding plate 7, and the feed inlet 5 is away from the axis of the rotating plate 4, a vibration motor 11 is installed at the bottom of the screen frame 1, and an upper screen conduit 12 and a lower screen conduit 13 are respectively installed at the discharge port of the screen frame 1.

[0026] Please refer to Figures 2-3, a connecting rod 41 is fixedly connected to the middle of the bottom end of the rotating plate 4. One end of the connecting rod 41 extends out of the grinding plate 7 and is rotatably connected to the grinding plate 7. A connecting shaft 42 is rotatably connected inside the sieve frame 3. One end of the connecting shaft 42 is fixedly connected to the turntable 8, and the other end of the connecting shaft 42 is connected to the connecting rod 41 through a universal joint. Elastic pieces 10 are sleeved on both sides of the turntable 8, and one end of the elastic piece 10 is fixedly connected to the connecting ball 9.

[0027] The working principle of the grinding and screening pretreatment device for the slimming agent used in coking coal blending provided by the present utility model is as follows:

[0028] I. Feeding and V-shaped lever control

[0029] The slimming agent is injected into the feed hopper 2. The design of the feed hopper 2 ensures that the slimming agent can smoothly flow into the subsequent treatment area;

[0030] After the driving motor 22 is started, through the precise meshing of the driving gear 23 and the toothed ring 21, the rotating plate 4 is driven to rotate; the rotation speed of the rotating plate 4 can be controlled by adjusting the rotation speed of the driving motor to adapt to the treatment requirements of different slimming agents;

[0031] The slimming agent on the upper part of the rotating plate 4 enters the narrow space between the rotating plate 4 and the grinding plate 7 intermittently under the action of the V-shaped lever; this intermittent feeding method helps to control the amount of material during the grinding process and improve the grinding effect;

[0032] II. Grinding process

[0033] When the slimming agent enters the space between the rotating plate 4 and the grinding plate 7, the relative rotational movement between the two and the grinding lines on their surfaces act together to crush and grind the slimming agent; this mechanical crushing method effectively disperses large slimming agent lumps into smaller particles, thus avoiding the occurrence of agglomeration;

[0034] III. Screening and automatic cleaning

[0035] The ground slimming agent particles fall onto the sieve mesh 3 inside the sieve frame 1. The sieve mesh 3 on the sieve mesh 3 screens the slimming agent particles according to the set pore size. The pore diameter of the sieve mesh 3 is 0.25 mm; the slimming agent particles meeting the pore size requirements smoothly pass through the sieve mesh and enter the subsequent collection or treatment process; while the larger particles are retained on the sieve mesh;

[0036] The rotation of the turntable 8 not only drives the rotation of the rotating plate 4 but also rotates together with the two elastic pieces 10 and the two connecting balls 9; during the rotation process, the connecting ball 9 continuously impacts the sieve mesh 3, and the vibration generated by this physical impact effectively shakes out the slimming agent particles stuck on the sieve mesh 3, achieving the automatic cleaning of the sieve mesh 3 and avoiding the occurrence of screen blinding;

[0037] IV. Overall efficiency improvement

[0038] The entire pretreatment process realizes the integrated processing from feeding, grinding to screening and automatic cleaning, greatly improving the processing efficiency of the slimming agent;

[0039] The vibration motor 11 at the bottom of the screen frame further enhances the material fluidity and screening efficiency during the screening process, reduces the residence time of the material on the screen, and prevents the occurrence of blockage.

[0040] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A grinding and screening pretreatment device for a lean coal blending agent for coking, characterized in that: include: A screen frame (1), wherein a feed hopper (2) is fixedly connected to the top of the screen frame (1), and a screen (3) is installed inside the screen frame (1); A rotating plate (4) is rotatably connected to the feed hopper (2), the rotating plate (4) is provided with a feed port (5), a V-shaped shifting rod (6) is fixedly connected to the feed hopper (2), the feed hopper (2) is fixedly connected to a grinding plate (7), and the grinding plate (7) is located below the rotating plate (4); A turntable (8) is installed at the top of the inner portion of the screen frame (1), and connecting balls (9) are symmetrically installed on both sides of the turntable (8).

2. The grinding and screening pretreatment device for the leaning agent for coking coal blending according to claim 1, characterized in that: A gear ring (21) is fixedly connected to the middle of the outer wall of the rotating plate (4), a driving motor (22) is fixedly connected to the outer wall of the feed hopper (2), an output end of the driving motor (22) is fixedly connected to a driving gear (23), and the driving gear (23) extends into the feed hopper (2) and is meshed with the gear ring (21).

3. The grinding and screening pretreatment device for the leaning agent for coking coal blending according to claim 1, characterized in that: Grinding grooves are provided on the sides of the rotating plate (4) and the grinding plate (7) that are close to each other.

4. The grinding and screening pretreatment device for the leaning agent for coking coal blending according to claim 1, characterized in that: A connecting rod (41) is fixedly connected to the middle of the bottom end of the rotating plate (4), one end of the connecting rod (41) extends out of the grinding plate (7) and is rotatably connected to the grinding plate (7), and a connecting shaft (42) is rotatably connected inside the screen frame (1), one end of the connecting shaft (42) is fixedly connected to the turntable (8), and the other end of the connecting shaft (42) is connected to the connecting rod (41) through a universal joint transmission.

5. The grinding and screening pretreatment device for the leaning agent for coking coal blending according to claim 1, characterized in that: Shrapnel (10) is sleeved on both sides of the turntable (8), and one end of the shrapnel (10) is fixedly connected to the connecting ball (9).

6. The grinding and screening pretreatment device for a leaning agent for coking coal blending according to claim 1, characterized in that: The diameter of the rotating plate (4) is larger than the diameter of the grinding plate (7), and the feed port (5) is away from the axis of the rotating plate (4).

7. The grinding and screening pretreatment device for a leaning agent for coking coal blending according to claim 1, characterized in that: A vibration motor (11) is installed at the bottom of the screen frame (1).

8. The grinding and screening pretreatment device for a leaning agent for coking coal blending according to claim 1, characterized in that: The discharge port of the screen frame (1) is respectively provided with an upper screen conduit (12) and an under screen conduit (13).

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