A lime shaker

Abstract

The utility model relates to a lime vibrating screen belongs to vibrating screen technical field. Including vibrating screen frame and sieve plate, the sieve plate fixed connection is on the inclined plane of vibrating screen frame, and the left and right sides of the inclined plane of vibrating screen frame are all fixedly connected with side guard board, and the top of vibrating screen frame is connected with the flow board for preliminary slowing down the material sliding speed, and the left and right sides top of flow board are respectively rotatably connected with the side guard board of corresponding side, and flow board keeps relative perpendicular with ground under the action of self gravity and forms the discharge gap between the upper surface of sieve plate, and the middle part position of two groups of side guard boards is all set up with the notch, and the inside fixed connection of notch has U type fixed seat. In the utility model, through setting flow board, can play the role of slowing down the material sliding, also can adjust the unfolding size of discharge gap one according to the material accumulation amount. Through setting the drum, not only can secondary slow down the material sliding speed, but also can scatter the big block viscous material.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, and in particular to a lime vibrating screen. Background Technology

[0002] In steelmaking, lime is a crucial slag-forming material, and its quality directly affects the basicity, fluidity, and efficiency of metallurgical reactions such as dephosphorization and desulfurization of the slag. Lime easily generates a large amount of powder during transportation and storage. Currently, the common practice is to screen the lime using a vibrating screen before it enters the elevated silo to remove the powder.

[0003] Currently, inclined screen plates are commonly used when screening lime. After the loader feeds the lime into the upper feed port, it slides along the inclined screen surface towards the discharge port under the action of the inclined screen plate and vibration, while the powder is separated through the screen holes.

[0004] However, in practical applications, it has been found that because the sieve plate is a simple inclined plane, after the lime is added, it mainly relies on gravity and vibration to quickly slide across the sieve surface. Its effective residence time on the sieve surface is short, resulting in the powder sliding away before being fully screened, leading to incomplete screening. Secondly, because lime easily absorbs moisture and forms sticky lumps, existing screening devices lack a dedicated dispersing mechanism. These lumps easily slide across the sieve plate as a whole and directly enter the next process, not only affecting the screening effect but also potentially causing uneven reaction when the lumpy lime enters the steelmaking furnace. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model provides a lime vibrating screen. The technical solution of this utility model is as follows: A lime vibrating screen includes a vibrating screen frame and a screen plate. The screen plate is fixedly connected to the inclined surface of the vibrating screen frame. Side protective plates are fixedly connected to both sides of the inclined surface of the vibrating screen frame. A flow-damping plate for initially slowing down the downward flow of material is connected to the top of the vibrating screen frame. The tops of the left and right sides of the flow-damping plate are rotatably connected to the corresponding side protective plates. The flow-damping plate remains relatively perpendicular to the ground under its own weight and forms a discharge gap with the upper surface of the screen plate. A notch is opened in the middle of both sets of side protective plates, and a U-shaped fixing seat is fixedly connected inside the notch. The fixed seat is internally connected to a fixed plate. A roller is rotatably connected between two sets of fixed plates to further slow down the downward speed of the material and break up large pieces of sticky material. Multiple rows of teeth are arranged in a ring on the outer circumference of the roller body. The tips of the teeth form a discharge gap two with the upper surface of the screen plate. A drive motor is fixedly connected to one side of one set of fixed plates through a support frame. The drive motor drives the roller to rotate in the opposite direction to the downward direction of the material on the screen plate. A baffle is also fixedly connected between the two sets of fixed plates. The baffle is located above the roller and is perpendicular to the screen plate.

[0006] Optionally, the top of each of the left and right sides of the flow-damping plate is fixedly connected to a shaft. The two sets of shafts rotate through the two sets of side protective plates on the left and right sides and extend to the outside of the side protective plates. The end of the shaft away from the flow-damping plate is fixedly connected to a connecting plate, and a fixing frame is fixedly connected to one side of the connecting plate.

[0007] Optionally, each row of the toothed group includes multiple teeth spaced apart along the axial direction of the roller, and the teeth in adjacent rows of the toothed group are staggered in the axial direction.

[0008] Optionally, the left and right ends of the roller are fixedly connected to connecting shafts. The two sets of connecting shafts are rotatably connected to the fixed plates on both sides, and one set of connecting shafts passes through the fixed plate on the corresponding side and is connected to the output shaft of the drive motor. The two sets of fixed plates are fixedly connected to a ring seat on the side near the roller. The ring seat is coaxially sleeved on the outside of the connecting shaft on the corresponding side. The two sets of ring seats are rotatably sleeved on the outside of the two ends of the roller.

[0009] Optionally, angle iron plates are fixedly connected to both sides of the front and rear surfaces of the baffle between the two sets of fixing plates.

[0010] Optionally, a crossbeam is fixedly connected to the upper surface of the two sets of fixed plates and located on the upper surface of the baffle, and multiple sets of lifting rings are fixedly fixed at equal intervals in the transverse direction on the upper surface of the crossbeam.

[0011] Optionally, the fixing plate is fixedly connected inside the U-shaped fixing seat.

[0012] Optionally, the fixing plate is slidably inserted into the interior of the U-shaped fixing seat, and the two are limited by a limiting member.

[0013] Optionally, the U-shaped fixing seat includes a base and two sets of symmetrically arranged side rails. The base is fixedly connected to the bottom of the notch, and the two sets of side rails are respectively fixedly connected to both sides of the base. The upper surface of the base has a slot, and the lower end of the fixing plate is movably inserted into the slot. Both sides of the fixing plate are fixedly connected to guide strips that slide in cooperation with the corresponding side rails. The limiting component includes two sets of support beams and one set of fixing beams. The two sets of support beams are respectively fixed to the side of the side rail away from the roller, and the fixing beam is fixedly connected to the side of the fixing plate away from the roller. Both ends of the fixing beam have right-angle plates fixedly connected to the upper and lower surfaces. The right-angle plates are detachably connected to the support beams on the corresponding side by fixing bolts. The support beams have multiple sets of fixing holes vertically and equidistantly opened on the side near the right-angle plates. The ends of the fixing bolts penetrate the right-angle plates and abut against the fixing holes at the corresponding positions.

[0014] All of the above optional technical solutions can be combined arbitrarily, and this utility model does not provide a detailed description of the structure after each combination.

[0015] The beneficial effects of this utility model through the above solution are as follows: 1. In this utility model, by setting a flow-damping plate, the material's downward movement can be slowed down, and the size of the discharge gap can be adjusted according to the amount of material accumulated. Specifically, when the material falls, it first slides downward along the discharge gap between the flow-damping plate and the screen plate, achieving initial speed reduction. When the amount of material is large, the material accumulated on one side of the flow-damping plate will automatically push the flow-damping plate open, thereby expanding the discharge gap and preventing blockage.

[0016] 2. By setting up the roller, the material's downward speed can be slowed down again, extending the effective residence time of the material on the screen plate. It can also break up large pieces of sticky material. When the material slides to the position of the roller, the counter-rotating roller will continuously grab and throw the material on one side through the outer tooth assembly. In this process, the large pieces of sticky material are broken up and crushed, thus avoiding the large pieces of sticky material not being fully screened and affecting the steelmaking reaction.

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall appearance structure of the lime vibrating screen provided by this utility model; Figure 2An exploded view of the lime vibrating screen provided by this utility model; Figure 3 A left sectional view of the lime vibrating screen provided by this utility model; Figure 4 This is an exploded structural diagram of the vibrating screen frame, screen plate, side protective plate, flow buffer plate and U-shaped fixed seat in this utility model; Figure 5 This is a schematic diagram of the structure of the fixed plate, roller, drive motor and baffle in this utility model; Figure 6 This is an exploded structural diagram of the fixed plate, roller, drive motor and baffle in this utility model; Figure 7 This is an exploded structural diagram of the flow-retardant plate in this utility model.

[0019] The following are the labeling elements in the diagram: 1. Vibrating screen frame; 2. Screen plate; 3. Side guard plate; 31. Notch; 4. Flow buffer plate; 41. Shaft; 42. Connecting plate; 43. Fixing frame; 5. U-shaped fixing seat; 51. Base; 511. Slot; 52. Side rail; 53. Support beam; 531. Fixing hole; 6. Fixing plate; 61. Guide strip; 62. Fixing beam; 63. Right angle plate; 64. Fixing bolt; 65. Ring seat; 66. Support frame; 7. Roller; 71. Gear assembly; 711. Gear; 72. Connecting shaft; 8. Drive motor; 9. Baffle; 91. Angle iron piece; 92. Crossbeam; 93. Lifting ring. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope. Example

[0021] Please see Figure 1-7 This utility model provides a lime vibrating screen, including a vibrating screen frame 1 and a screen plate 2. The screen plate 2 is fixedly connected to the inclined surface of the vibrating screen frame 1. Side protective plates 3 are fixedly connected to both sides of the inclined surface of the vibrating screen frame 1. The side protective plates 3 prevent the material from sliding off the sides of the screen plate 2 during the screening process, ensuring that all materials can pass smoothly through the screen surface for screening.

[0022] The top of the vibrating screen frame 1 is connected to a flow-damping plate 4 to initially slow down the downward movement of the material. The tops of the left and right sides of the flow-damping plate 4 are rotatably connected to the corresponding side guard plates 3. Under its own weight, the flow-damping plate 4 remains relatively perpendicular to the ground and forms a discharge gap 1 between itself and the upper surface of the screen plate 2. When the material is fed from above the vibrating screen, it will first slide down along the discharge gap 1 between the flow-damping plate 4 and the screen plate 2. This process initially slows down the downward movement of the material, ensuring that the material stays on the screen plate 2 for a longer time and improving the screening effect. At the same time, when the material accumulation is large, the material accumulated on one side of the flow-damping plate 4 will automatically push the flow-damping plate 4 open, thereby widening the discharge gap 1.

[0023] Both sets of side protective plates 3 have notches 31 in the middle. A U-shaped fixing seat 5 is fixedly connected inside the notch 31, and a fixing plate 6 is connected inside the U-shaped fixing seat 5. A roller 7 is rotatably connected between the two sets of fixing plates 6 to further slow down the material's descent and break up large, sticky materials. Multiple rows of teeth 71 are arranged in a ring on the outer circumference of the roller 7. The tips of the teeth 71 form a discharge gap with the upper surface of the screen plate 2. A drive motor 8 is fixedly connected to one side of one set of fixing plates 6 via a support frame 66. The drive motor 8 drives the roller 7 to rotate in the opposite direction to the material's descent on the screen plate 2. This reverse rotation of the roller 7 by the drive motor 8 further slows down the material's descent, reducing its speed on the screen plate 2 and extending its residence time on the screen surface, thus effectively improving screening efficiency. Simultaneously, the counter-rotating roller 7 continuously picks up and throws material on one side through the outer teeth 71, breaking up and crushing large, sticky materials in the process.

[0024] A baffle 9 is fixedly connected between the two sets of fixed plates 6. The baffle 9 is located above the drum 7 and is perpendicular to the screen plate 2. The baffle 9 can prevent materials from splashing or jumping directly over the drum 7, ensuring that all materials must pass through the discharge gap 2.

[0025] Furthermore, shafts 41 are fixedly connected to the top of both the left and right sides of the flow buffer 4. The two sets of shafts 41 rotate through the two sets of side protection plates 3 on the left and right sides and extend to the outside of the side protection plates 3. A connecting plate 42 is fixedly connected to the end of the shaft 41 away from the flow buffer 4. A fixing frame 43 is fixedly connected to one side of the connecting plate 42.

[0026] Specifically, when the amount of material on one side of the buffer plate 4 is small, the material will slide downwards through the discharge gap, effectively slowing down the initial downward speed of the material. At this time, because there is less material accumulation, the discharge gap remains small, which helps to regulate the speed of material flow. When the amount of material on one side of the buffer plate 4 increases, the accumulated material will squeeze the buffer plate 4, causing the two sets of shafts 41 at the top of the buffer plate 4 to rotate relative to the two sets of side guard plates 3. At this time, the discharge gap gradually increases, allowing more material to pass through smoothly, further adjusting the material flow rate, preventing blockage, and ensuring that the material can pass through smoothly and orderly under different conditions.

[0027] Secondly, the main purpose of the flow buffer 4 is to prevent a large amount of material from sliding down to one side of the drum 7 immediately after feeding, thereby ensuring the stable operation of the drum 7.

[0028] In addition, the connecting plates 42 and the fixing frame 43 at both ends of the shaft 41 serve to manually intervene in the rotation of the flow-retarding plate 4. When large pieces of material accumulate on one side of the flow-retarding plate 4, and the accumulation is small enough that the flow-retarding plate 4 cannot be pushed away by itself, the operator can use a long rod to hold the fixing frame 43 and push the connecting plate 42 in the downward direction of the screen plate 2. At this time, the connecting plate 42 will drive the flow-retarding plate 4 to rotate in the downward direction of the screen plate 2 through the shaft 41, thereby increasing the discharge gap and quickly clearing the accumulated large pieces of material.

[0029] Furthermore, multiple rows of tooth groups 71 are arranged in a ring on the outer circumference of the drum body 7. Each row of tooth groups 71 contains multiple teeth 711 that are spaced apart along the axial direction of the drum 7, and the teeth 711 in adjacent rows of tooth groups 71 are staggered in the axial direction.

[0030] Specifically, the staggered arrangement of the teeth 711 allows for more thorough and continuous contact between the surface of the roller 7 and the material during rotation. Secondly, the staggered arrangement of the teeth 711 also creates more complex shearing and impact on the material, which helps to effectively break up and crush large, sticky materials. Furthermore, the staggered arrangement of the teeth 711 effectively prevents wet, sticky materials from adhering and clogging between the teeth 711 or on the surface of the roller 7.

[0031] Furthermore, connecting shafts 72 are fixedly connected to both the left and right ends of the roller 7. The two sets of connecting shafts 72 are rotatably connected to the fixing plates 6 on both sides, and one set of connecting shafts 72 passes through the fixing plate 6 on the corresponding side and is connected to the output shaft of the drive motor 8. Both sets of fixing plates 6 are fixedly connected to the side of the roller 7. The ring seats 65 are coaxially sleeved on the outside of the connecting shafts 72 on the corresponding side. The two sets of ring seats 65 are rotatably sleeved on the outside of the two ends of the roller 7.

[0032] Specifically, the output shaft of the drive motor 8 drives the connecting shaft 72 to rotate via a reducer, and the connecting shaft 72 in turn drives the roller 7 to rotate synchronously. During this process, the two sets of ring seats 65 can wrap and protect the two ends of the roller 7, thereby preventing material from getting stuck in the gap between the end of the roller 7 and the fixed plate 6, and thus avoiding affecting the rotation of the connecting shaft 72 due to material jamming. Secondly, the setting of the ring seats 65 also provides more stable radial support points for the two ends of the roller 7, reducing the deformation and vibration that may occur at the root of the connecting shaft 72 under stress.

[0033] Furthermore, angle iron plates 91 are fixedly connected to both sides of the front and rear surfaces of the baffle 9 between the two sets of fixed plates 6. The angle iron plates 91 effectively enhance the connection strength between the baffle 9 and the fixed plates 6.

[0034] Furthermore, a crossbeam 92 is fixedly connected to the upper surface of the two sets of fixed plates 6 and located on the upper surface of the baffle 9, and multiple sets of lifting rings 93 are fixedly fixed at equal intervals in the transverse direction on the upper surface of the crossbeam 92.

[0035] Specifically, when it is necessary to remove the roller 7 and the baffle 9, the crossbeam 92 can be pulled in a specific direction with the help of the lifting ring 93, so that the two sets of fixing plates 6 can be easily pulled out from the corresponding U-shaped fixing seat 5.

[0036] Furthermore, the fixing plate 6 is fixedly connected inside the U-shaped fixing seat 5.

[0037] Specifically, the fixing plate 6 is installed in the U-shaped fixing seat 5 by bolting or welding, which makes the structure more stable. Example

[0038] In another embodiment of this utility model, the fixing plate 6 is slidably inserted into the U-shaped fixing seat 5 and the two are limited by a limiting member.

[0039] Furthermore, the U-shaped fixing base 5 includes a base 51 and two sets of symmetrically arranged side rails 52. The base 51 is fixedly connected to the bottom of the notch 31, and the two sets of side rails 52 are respectively fixedly connected to both sides of the base 51. A slot 511 is provided on the upper surface of the base 51, and the lower end of the fixing plate 6 is movably inserted into the slot 511. Guide strips 61 that slide and cooperate with the corresponding side rails 52 are fixedly connected to both sides of the fixing plate 6. The limiting component includes two sets of support beams 53 and one set of fixing beams 62. Support beams 53 are fixed to the side of side rail 52 away from roller 7. Fixed beam 62 is fixedly connected to fixed plate 6 away from roller 7. Right angle plates 63 are fixedly connected to the upper and lower surfaces of both ends of fixed beam 62. Right angle plates 63 are detachably connected to the support beam 53 on the corresponding side by fixing bolts 64. Multiple sets of fixing holes 531 are vertically and equidistantly opened on the side of support beam 53 near right angle plate 63. The end of fixing bolt 64 passes through right angle plate 63 and abuts in the fixing hole 531 at the corresponding position.

[0040] Specifically, in practical applications, the size of the discharge gap 2 (i.e., the height of the tooth tip of the outer tooth 711 of the roller 7 and the upper surface of the screen plate 2) can be flexibly adjusted according to the process requirements of lime screening block size. The lower end of the fixing plate 6 is inserted into the slot 511 of the base 51, and the guide strips 61 on both sides are embedded in the side rails 52, ensuring that the fixing plate 6 can only slide vertically up and down smoothly without shaking. The cooperation between the slot 511 and the fixing plate 6 provides a certain upward height for the fixing plate 6, ensuring that after the discharge gap 2 is adjusted, the bottom of the fixing plate 6 is always inserted into the slot 511. When it is necessary to increase the discharge gap 2, the fixing bolts 64 used to fix the right angle plate 63 and the support beam 53 are removed, and then the baffle 9 is pulled upward. The baffle 9 drives the fixing plates 6 on both sides to slide upward relative to their respective U-shaped fixing seats 5. At this time, the discharge gap 2 will increase as the fixing plate 6 rises, thereby meeting the needs of different lime screening processes. After adjustment, the right angle plate 63 is connected and fixed to the corresponding fixing hole 531 using the fixing bolts 64.

[0041] Working principle: First, the loader feeds lime into the vibrating screen frame 1 from the top. Second, the material, blocked by the flow-delay plate 4, can only slide down along the discharge gap, thus slowing its descent. When the material accumulation on one side of the flow-delay plate 4 becomes too large, it will automatically push the flow-delay plate 4 aside, increasing the discharge gap. Third, the material slides along the inclined surface of the screen plate 2 to the position of the drum 7. The drive motor 8 drives the drum 7 to rotate in the opposite direction, thereby using the teeth 711 on the outer side of the drum 7 to continuously push the material accumulated on one side of the drum 7 upward. During this process, some large, sticky materials are broken up and accumulated on one side of the baffle 9. Fourth, materials of the correct size will slide through the discharge gap to the discharge port of the screen plate 2, while powder will fall through the gaps in the screen plate 2 below.

[0042] The above are merely preferred embodiments of this utility model and are not intended to limit this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A lime vibrating screen, characterized in that: The screen includes a vibrating screen frame (1) and a screen plate (2). The screen plate (2) is fixedly connected to the inclined surface of the vibrating screen frame (1). Side guard plates (3) are fixedly connected to both sides of the inclined surface of the vibrating screen frame (1). A flow-retarding plate (4) is connected to the top of the vibrating screen frame (1) to initially slow down the downward speed of the material. The tops of the left and right sides of the flow-retarding plate (4) are rotatably connected to the corresponding side guard plate (3). The flow-retarding plate (4) remains relatively perpendicular to the ground under its own weight and forms a discharge gap with the upper surface of the screen plate (2). A notch (31) is opened in the middle of both sets of side guard plates (3). A U-shaped fixing seat (5) is fixedly connected inside the notch (31). A U-shaped fixing seat (5) is fixedly connected inside the U-shaped fixing seat (5). A fixed plate (6) is rotatably connected between two sets of fixed plates (6) to a roller (7) for further slowing down the downward speed of the material and breaking up large pieces of sticky material. Multiple rows of teeth (71) are arranged in a ring on the outer circumference of the roller (7). The tips of the teeth (71) form a discharge gap with the upper surface of the screen plate (2). A drive motor (8) is fixedly connected to one side of one set of fixed plates (6) through a support frame (66). The drive motor (8) drives the roller (7) to rotate in the opposite direction to the downward direction of the material on the screen plate (2). A baffle (9) is also fixedly connected between the two sets of fixed plates (6). The baffle (9) is located above the roller (7) and is perpendicular to the screen plate (2).

2. A lime vibrating screen according to claim 1, characterized in that, The top of the left and right sides of the flow-slowing plate (4) is fixedly connected to a shaft (41). The two sets of shafts (41) rotate through the two sets of side guard plates (3) on the left and right sides and extend to the outside of the side guard plates (3). The end of the shaft (41) away from the flow-slowing plate (4) is fixedly connected to a connecting plate (42). A fixing frame (43) is fixedly connected to one side of the connecting plate (42).

3. A lime vibrating screen according to claim 1, characterized in that, Each row of the toothed group (71) contains a plurality of teeth (711) spaced apart along the axial direction of the roller (7), and the teeth (711) in adjacent rows of the toothed group (71) are staggered in the axial direction.

4. A lime vibrating screen according to claim 1, characterized in that, Both ends of the roller (7) are fixedly connected to connecting shafts (72). The two sets of connecting shafts (72) are rotatably connected to the fixing plates (6) on both sides respectively. One set of connecting shafts (72) passes through the fixing plate (6) on the corresponding side and is connected to the output shaft of the drive motor (8). Both sets of fixing plates (6) are fixedly connected to a ring seat (65) on the side of the roller (7). The ring seat (65) is coaxially sleeved on the outside of the connecting shaft (72) on the corresponding side. The two sets of ring seats (65) are rotatably sleeved on the outside of the two ends of the roller (7).

5. A lime vibrating screen according to claim 1, characterized in that, Angle iron pieces (91) are fixedly connected to the two sets of fixing plates (6) on both sides of the front and rear surfaces of the baffle (9).

6. A lime vibrating screen according to claim 5, characterized in that, A crossbeam (92) is fixedly connected to the upper surface of the two sets of fixed plates (6) and the upper surface of the baffle (9). Multiple sets of lifting rings (93) are fixedly fixed at equal intervals on the upper surface of the crossbeam (92).

7. A lime vibrating screen according to any one of claims 1 to 6, characterized in that, The fixing plate (6) is fixedly connected inside the U-shaped fixing seat (5).

8. A lime vibrating screen according to any one of claims 1 to 6, characterized in that, The fixing plate (6) is slidably inserted into the U-shaped fixing seat (5), and the two are limited by a limiting member.

9. A lime vibrating screen according to claim 8, characterized in that, The U-shaped fixing seat (5) includes a base (51) and two sets of symmetrically arranged side rails (52). The base (51) is fixedly connected to the bottom of the notch (31), and the two sets of side rails (52) are respectively fixedly connected to both sides of the base (51). The upper surface of the base (51) is provided with a slot (511). The lower end of the fixing plate (6) is movably inserted into the slot (511). Both sides of the fixing plate (6) are fixedly connected with guide strips (61) that slide in cooperation with the corresponding side rails (52). The limiting member includes two sets of support beams (53) and one set of fixing beams (62). The support beams (53) are fixed on the side of the side rail (52) away from the roller (7). The fixed beam (62) is fixedly connected to the side of the fixed plate (6) away from the roller (7). Right angle plates (63) are fixedly connected to the upper and lower surfaces of both ends of the fixed beam (62). The right angle plate (63) is detachably connected to the support beam (53) on the corresponding side by fixing bolts (64). The support beam (53) has multiple sets of fixing holes (531) vertically and equidistantly opened on the side of the right angle plate (63). The end of the fixing bolt (64) passes through the right angle plate (63) and abuts against the fixing hole (531) at the corresponding position.

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